CN114566809B

CN114566809B - Double-acting pressure type drawing machine and drawing method for producing reflecting surface of communication antenna

Info

Publication number: CN114566809B
Application number: CN202210224912.1A
Authority: CN
Inventors: 远金录
Original assignee: Sanwei Communication Equipment Co ltd
Current assignee: Sanwei Communication Equipment Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-10-28
Anticipated expiration: 2042-03-09
Also published as: CN114566809A

Abstract

The invention relates to the technical field of communication antenna drawing processing equipment, and provides a double-acting pressure type drawing machine for producing a reflecting surface of a communication antenna and a drawing method. By the technical scheme, the technical problems that when the paraboloid of the communication antenna in the related technology is used for drawing and processing, the stress is uneven, and more leftover materials need to be cut for processed materials are solved.

Description

Double-acting pressure type drawing machine and drawing method for producing reflecting surface of communication antenna

Technical Field

The invention relates to the technical field of communication antenna drawing processing equipment, in particular to a double-acting pressure type drawing machine for communication antenna production.

Background

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space) or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all use electromagnetic waves to transmit information and work by depending on antennas. A parabolic antenna is a common communication antenna, and refers to a planar antenna composed of a parabolic reflector and an illuminator (feed source) located at the focal point of the parabolic reflector, and usually adopts a metal paraboloid of revolution, a cut paraboloid of revolution, or a cylindrical paraboloid as a reflector, and a horn or a dipole with a reflector as a feed source, and is a single-reflection planar antenna, and an axisymmetric paraboloid of revolution is used as a main reflection surface. The parabolic antennas mainly comprise a feed-forward parabolic antenna, a Cassegrain antenna, a Graighuri antenna and a ring-focus antenna, and no matter which type of the reflective surface of the parabolic antenna, the parabolic antennas have three processing modes, namely compression molding, spinning molding and drawing molding; for the parabolic antenna with smaller size, the parabolic antenna can be integrally molded by pressing, and can also be integrally formed by spinning, but for the parabolic antenna with larger size, considering that the size and pressure of equipment required by die pressing and spinning are very large, the spinning and die pressing are difficult to provide the required large tension, in the related technology, the parabolic antenna is usually processed by drawing, a plurality of sectors can be drawn, and then a plurality of drawn circumferences are spliced into the whole parabolic surface.

In the related technology, for the splicing processing of the parabolic antenna, the materials for drawing are mostly in a fan shape, one end is a fan angle, the other end is an arc-shaped edge, and the two ends are not symmetrical, so that the stress balance of the two ends is difficult to keep during drawing, the shape of a processed workpiece is not standard, and the problem of stress exists, so that the processed parabolic antenna has certain influence on the transmission and the reception of signals, the communication precision is reduced, and the communication reliability and stability are reduced; even if one end of the fan corner does not need to be in an angle shape, namely the material can be a fan ring, the difference of the arc length of the inner arc is larger than that of the outer arc, and the problem that the stress balance of two ends is difficult to maintain exists, for example, the length of the inner arc is increased, a larger fan-shaped plate-shaped material (a) needs to be selected before drawing, and a paraboloid meeting the requirement can be processed only by cutting more rim charge when drawing is finished. There is therefore a great need for a suitable drawing machine which can preferably draw sectors or sectors into parabolas and which, when drawn, requires as little trimming as possible, and can be used directly for assembly into parabolas, preferably by simple cutting.

Disclosure of Invention

The invention provides a double-acting pressure type drawing machine for producing a communication antenna, which solves the technical problems that when the paraboloid of the communication antenna in the related technology is drawn, the stress is not uniform, and more leftover materials need to be cut for the processed materials.

The technical scheme of the invention is as follows:

a double-acting pressure type drawing machine for producing the reflecting surface of communication antenna is used for drawing sector-shaped plate-shaped material into paraboloid and is characterized by comprising

A first moving member movably disposed on the first frame,

a first clamp assembly arranged on the first moving member to move along with the first moving member and used for clamping one end of the fan-shaped plate-shaped material,

a second moving member movably disposed on the first moving member,

the second clamping assembly is arranged on the second moving piece and moves along with the second moving piece and is used for clamping the other end of the fan-shaped plate-shaped material,

a third moving member movably disposed on the first moving member,

the jacking mold part is arranged on the third moving part, the third moving part drives the jacking mold part to move after moving, and the jacking mold part is used for jacking the plate surface of the fan-shaped plate-shaped material,

wherein the first clamp assembly and the second clamp assembly each comprise

A plurality of material clamping units which are arranged in sequence, wherein each material clamping unit comprises

A clamp body having an opening for the fan-shaped plate-like material to extend into,

a first wedging block slidably disposed on the clip body within the opening,

the second wedge clamping block is arranged on the clamp main body in a sliding mode and located in the opening, the sliding direction of the first wedge clamping block and the sliding direction of the second wedge clamping block form acute angles with the plate surface of the fan-shaped plate-shaped material, the sliding directions of the first wedge clamping block and the second wedge clamping block are symmetrical relative to the plate surface of the fan-shaped plate-shaped material, one or two of the first wedge clamping block and the second wedge clamping block of the first clamp assembly are used for clamping one end of the fan-shaped plate-shaped material after moving, one or two of the first wedge clamping block and the second wedge clamping block of the second clamp assembly are used for clamping the other end of the fan-shaped plate-shaped material after moving,

a fourth linear drive urging the first cleat block and/or the second cleat block to move in abutment.

As a further technical proposal, the method also comprises

A first linear driving member for driving the first moving member to move,

a second linear driving member for driving the second moving member to move,

a third linear driving member for driving the third moving member to move,

wherein the first linear driving member comprises a first hydraulic cylinder, a second hydraulic cylinder and a first spherical hinge sleeve, the first spherical hinge sleeve is arranged at the output end of the second hydraulic cylinder in a sliding manner, the sliding direction of the first spherical hinge sleeve is vertical to the output shaft of the second hydraulic cylinder, one end of the first moving member is connected with the output end of the first hydraulic cylinder in a spherical hinge manner, the other end of the first moving member is connected with the first spherical hinge sleeve in a spherical hinge manner,

the second linear driving part comprises a third hydraulic cylinder, a fourth hydraulic cylinder and a second spherical hinge sleeve, the second spherical hinge sleeve is arranged at the output end of the fourth hydraulic cylinder in a sliding mode, the sliding direction of the second spherical hinge sleeve is perpendicular to the output shaft of the fourth hydraulic cylinder, one end of the second moving part is connected with the output end of the third hydraulic cylinder in a spherical hinge mode, the other end of the second moving part is connected with the second spherical hinge sleeve in a spherical hinge mode,

the hydraulic system is characterized by further comprising a fifth hydraulic cylinder and a sixth hydraulic cylinder, wherein one end of the fifth hydraulic cylinder is connected with the first moving member in a spherical hinge mode, the other end of the fifth hydraulic cylinder is connected with the output end of the first hydraulic cylinder in a spherical hinge mode, one end of the sixth hydraulic cylinder is connected with the second moving member in a spherical hinge mode, and the other end of the sixth hydraulic cylinder is connected with the output end of the third hydraulic cylinder in a spherical hinge mode.

As a further technical scheme, a plurality of the material clamping units are arranged in a sliding way in a lifting way,

the first moving member and the second moving member are respectively provided with a plurality of vertical guide rails which are sequentially arranged, the material clamping units are arranged on the vertical guide rails in a lifting and sliding manner and used for adjusting the lifting of the material clamping units into an arc shape in the projection of the arrangement direction on a vertical surface,

the vertical limiting structure is used for limiting the material clamping unit on the vertical guide rail up and down after the position of the material clamping unit is adjusted in a vertical sliding mode.

As a further technical scheme, the vertical guide rails are transversely arranged on the first moving member and the second moving member in a sliding manner along the radial direction of the fan-shaped plate-shaped material, and are used for arranging a plurality of vertical guide rails along an arc shape,

the locking device also comprises a transverse locking piece used for locking the vertical guide rail after the position adjustment is finished by transverse sliding.

As a further technical scheme, the vertical guide rail is a guide rod, the material clamping unit can rotate around the vertical guide rail as an axis while sliding up and down, and the vertical limiting structure has the limiting function of limiting the material clamping unit to lift up and down on the vertical guide rail and not to rotate on the vertical guide rail.

As a further technical scheme, the vertical limiting structures are locking bolts, the vertical limiting structures are arranged on the upper side and the lower side of each material clamping unit,

also comprises the following steps of (1) preparing,

the sliding block is transversely arranged on the first moving piece and the second moving piece in a sliding manner, the transverse sliding direction is the same as that of the vertical guide rail,

the vertical limiting structure is arranged on the sliding block in a threaded mode, a guide head is arranged at the end portion of the vertical limiting structure, a circumferential groove is formed in the clamp body, the guide head is arranged in the circumferential groove in a sliding mode, and the circumferential groove and the vertical guide rail are coaxial.

As a further technical solution, the first wedge clamping block has a first clamping surface, the second wedge clamping block has a second clamping surface, the first clamping surface and the second clamping surface are arranged oppositely for clamping the edge of the fan-shaped plate-shaped material from top to bottom respectively,

the first clamping face and the second clamping face are both T-shaped, two adjacent first clamping faces are arranged in a ladder mode, one first clamping face is parallel and level to the two sides of the first clamping face, and the first clamping face and the second clamping face which are opposite from top to bottom are arranged in a staggered mode.

The first clamping face and the second clamping face each have friction flutes.

As a further technical scheme, the jacking mould part comprises

A central mold fixedly arranged on the third moving member,

the side pressing dies are arranged on one side of the central die close to the first clamping assembly and one side of the central die close to the second clamping assembly in a mutually abutting and sequentially arranged mode, the side pressing dies are arranged on the third moving member in a lifting and sliding mode, the upper surfaces of the central die and the side pressing dies form the same paraboloid, and after the side pressing dies descend, yielding spaces for containing the first clamping assembly and the second clamping assembly are reserved on the upper surfaces of the side pressing dies,

and each side die is driven by one fifth linear driving assembly to move up and down until the upper surface of the side die is aligned with the upper surface of the central die.

As a further technical solution, the top pressing mold further includes a guide groove and a guide block, the guide groove is formed on the central mold or on the side pressing mold, the guide block is formed on the side pressing mold, one guide block slides in an adjacent guide groove, and an upper end of the guide groove is used for limiting a highest position of the guide block moving upward, so that the upper surface of the side pressing mold does not move upward beyond the upper surface of the central mold.

The invention also provides a double-acting pressure type drawing method for producing the reflecting surface of the communication antenna, which is used for drawing the sector plate-shaped material into a paraboloid by using the double-acting pressure type drawing machine for producing the reflecting surface of the communication antenna and comprises the following steps,

s1, heating the fan-shaped plate-shaped material,

s2, the first clamping assembly clamps one end of the fan-shaped plate-shaped material, the second clamping assembly clamps the other end of the fan-shaped plate-shaped material to draw, and meanwhile, the jacking mold piece jacks the bottom surface of the fan-shaped plate-shaped material, wherein the first clamping assembly is kept close to the central mold without a gap, the second clamping assembly is kept close to the central mold without a gap,

and S3, after the fan-shaped plate-shaped material is lengthened, the first clamping assembly and the central mold form a stretching interval, the second clamping assembly and the central mold form a stretching interval, at the moment, the side pressing mold moves upwards to enter the stretching interval position, the upper surface of the side pressing mold and the upper surface of the central mold jointly press the bottom surface of the fan-shaped plate-shaped material, and the rest side pressing molds move upwards in sequence to finish drawing the fan-shaped plate-shaped material into a paraboloid.

The working principle and the beneficial effects of the invention are as follows:

a double-acting pressure type drawing machine is designed to process the fan-shaped plate-shaped materials. On one hand, the two-power drawing machine is double-power, after the fan-shaped plate-shaped material is clamped by the first clamping assembly and the second clamping assembly, the fan-shaped plate-shaped material is driven by the two groups of hydraulic oil cylinders respectively to apply force from two ends together for drawing, so that larger pulling force can be provided; on the other hand, the pressure type is adopted, the jacking mold part designed at the bottom is used for jacking, the stress is more uniform, the larger size is ensured, and the parabolic reflecting plate with the size more than ten meters can be well processed. Considering that after the fan-shaped plate-shaped materials are clamped by the first clamping assembly and the second clamping assembly, if the clamping part is too large, the size of the leftover materials of the products can be influenced, if the clamping force is too large, not only the power is increased, but also the fan-shaped plate-shaped materials are easy to be clamped, deformed and even damaged by pulling, therefore, the clamping units of the first clamping assembly and the second clamping assembly are designed to be of a self-locking structure, when the fan-shaped plate-shaped materials are pulled and delayed in a self-locking mode, the fan-shaped plate-shaped materials are clamped more and more tightly by the clamping units, but the longitudinal clamping force cannot be so large as to damage the fan-shaped plate-shaped materials, the high-efficiency drawing is ensured, the clamping units do not need to clamp too many edges of the fan-shaped plate-shaped materials, a good material clamping and pulling effect can be achieved, and finally the leftover materials needing to be cut can be reduced to be very low.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a structure of a view angle according to the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic view of a first linear driving member according to the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of a material clamping unit in the invention;

FIG. 5 is a schematic view of a vertical limiting structure according to the present invention;

FIG. 6 is a schematic structural view of a material clamping unit according to another embodiment of the present invention;

FIG. 7 is a schematic structural view of a first and second wedging block and an embodiment of the present invention;

FIG. 8 is a schematic view of the structure of the pressing mold of the present invention;

FIG. 9 is a schematic cross-sectional view of a press mold according to the present invention;

FIG. 10 is a schematic side view of the pressing mold according to the present invention;

in the figure: fan-shaped plate-shaped material (a), first moving member (1), vertical guide rail (101), first clamp subassembly (2), press from both sides material unit (2 a), press from both sides main part (201), opening (201 a), circumferential groove (201 b), first wedge clamp piece (202), first clamp face (202 a), second wedge clamp piece (203), second clamp face (203 a), fourth linear driving piece (204), second moving member (3), second clamp subassembly (4), third moving member (5), top pressure mould spare (6), central mould (601), limit mould (602), abdication space (603), fifth linear driving subassembly (604), guide way (605), guide block (606), first linear driving piece (7), first pneumatic cylinder (701), second pneumatic cylinder (702), first ball hinge cover (703), fifth pneumatic cylinder (704), second linear driving piece (8), third pneumatic cylinder (801), fourth pneumatic cylinder (802), second ball hinge cover (803), sixth pneumatic cylinder (804), third linear driving piece (804), vertical linear driving piece (10 a), spacing sliding block structure (11 a), limiting slide block (11).

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.

Example 1

As shown in FIGS. 1 to 3, this embodiment provides a double-acting pressure type drawing machine for producing the reflecting surface of a communication antenna, which is used to draw a sector-shaped plate-like material a into a paraboloid, including

The first moving member 1 is movably arranged,

a first clamping component 2 which is arranged on the first moving piece 1 and moves along with the first moving piece and is used for clamping one end of the fan-shaped plate-shaped material a,

a second moving member 3, which is movably disposed,

a second clamping component 4 which is arranged on the second moving piece 3 and moves along with the second moving piece and is used for clamping the other end of the fan-shaped plate-shaped material a,

a third moving member 5, which is movably disposed,

the jacking mold part 6 is arranged on the third moving part 5, the jacking mold part 6 is driven to move after the third moving part 5 moves, the jacking mold part is used for jacking the plate surface of the fan-shaped plate-shaped material a,

as shown in fig. 4, wherein the first clamp assembly 2 and the second clamp assembly 4 each comprise

A plurality of material clamping units 2a which are arranged in sequence, wherein each material clamping unit 2a comprises

A clamp body 201 with an opening 201a, wherein the opening 201a is used for the fan-shaped plate-shaped material a to extend into,

a first wedging block 202, slidingly disposed on the clamp body 201, located in the opening 201a,

the second wedge clamping block 203 is arranged on the clamp main body 201 in a sliding mode and is located in the opening 201a, the included angle between the sliding direction of the first wedge clamping block 202 and the sliding direction of the second wedge clamping block 203 and the plate surface of the fan-shaped plate-shaped material a is an acute angle, and the sliding directions of the first wedge clamping block 202 and the second wedge clamping block 203 are symmetrical relative to the plate surface of the fan-shaped plate-shaped material a, wherein one or two of the first wedge clamping block 202 and the second wedge clamping block 203 of the first clamp assembly 2 are used for clamping one end of the fan-shaped plate-shaped material a after moving, one or two of the first wedge clamping block 202 and the second wedge clamping block 203 of the second clamp assembly 4 are used for clamping the other end of the fan-shaped plate-shaped material a after moving,

the fourth linear drive 204, pushes the first and/or

second wedging block

202, 203 into movement in abutment.

In the embodiment, in order to solve the problems that the stress is not uniform and the processed material needs to be cut more leftover materials when the paraboloid of the communication antenna is subjected to drawing processing, a double-acting pressure type drawing machine is particularly designed for processing the sector plate-shaped material a. On one hand, the two-power drawing machine is double-power, after the fan-shaped plate-shaped material a is clamped by the first clamping assembly 2 and the second clamping assembly 4, the two groups of hydraulic cylinders respectively drive the two ends to apply force together for drawing, so that larger pulling force can be provided; on the other hand, the pressure type is also adopted, the jacking mold part 6 designed at the bottom is used for jacking, the stress is more uniform, the larger size is ensured, and the parabolic reflecting plate with the size more than ten meters can be well processed. Considering that after the fan-shaped plate-shaped material a is clamped by the first clamping assembly 2 and the second clamping assembly 4, if the clamping part is too large, the size of the leftover material of the product can be influenced, if the clamping force is too large, the power is increased, and the fan-shaped plate-shaped material a is easy to clamp, deform and even damage, therefore, the clamping units 2a of the first clamping assembly 2 and the second clamping assembly 4 are designed to be of a self-locking structure, when the fan-shaped plate-shaped material a is pulled and extended in a self-locking mode, the fan-shaped plate-shaped material a is clamped more and more tightly by the clamping units 2a, but the longitudinal clamping force cannot be so large as to damage the fan-shaped plate-shaped material a, the efficient operation of the drawing is ensured, the clamping units 2a do not need to clamp too many edges of the fan-shaped plate-shaped material a, a good material clamping and drawing effects can be achieved, and finally the leftover material needing to be cut can be reduced to be very low.

Specifically, the first clamping assembly 2 and the second clamping assembly 4 respectively comprise a plurality of clamping units 2a which are sequentially arranged, so that the fan-shaped plate-shaped material a can be better clamped, and compared with clamping by one clamping assembly, redundant deformation caused by drawing due to generation of internal stress during clamping can be avoided; the frame of the material clamping unit 2a is a clamping main body 201, the first wedge clamping block 202 and the second wedge clamping block 203 are arranged on the clamping main body 201 in a relatively sliding manner and located in the opening 201a, after one or both of the first wedge clamping block 202 and the second wedge clamping block 203 are pushed by the fourth linear driving member 204, the fan-shaped plate-shaped material a can be clamped well, and because the sliding directions of the first wedge clamping block 202 and the second wedge clamping block are inclined and slide at an acute angle relative to the fan-shaped plate-shaped material a, under the action of a pulling force, the first wedge clamping block 202 and the second wedge clamping block are closer to each other, so that the fan-shaped plate-shaped material a is further clamped, the clamping force is ensured to be always large enough, the phenomenon that the fan-shaped plate-shaped material a cannot be clamped by the first wedge clamping block 202 and the second wedge clamping block 203 is always just larger than a required static friction force, and the clamping force cannot exceed a lot, and the phenomenon that the fan-shaped plate-shaped material a is damaged by the excessively large clamping force and uneven stress caused by unnecessary deformation is avoided.

The first wedge clamping block 202 and the second wedge clamping block 203 are pushed to clamp by the fourth linear driving piece 204, the fourth linear driving piece 204 can adopt a hydraulic cylinder, and one or both of the wedge clamping blocks can be pushed; need satisfy fourth linear driving piece 204 and first wedge clamp splice 202, second wedge clamp splice 203 is the butt, can not be fixed connection, after in order to guarantee that fourth linear driving piece 204 removes the hydraulic pressure source, when the output is motionless, first wedge clamp splice 202 still can be kept away from to second wedge clamp splice 203, second wedge clamp splice 203 certain distance removes, if fourth linear driving piece 204 is connected with the hydraulic pressure source this moment of course, its output can continue to advance with first wedge clamp splice 202, second wedge clamp splice 203 pushes away before and compresses tightly, make the two distance diminish, thereby compress tightly fan-shaped plate material a enough pressure, fine auto-lock clamp is realized, the high-efficient production and processing of equipment has been guaranteed.

Example 2

As shown in fig. 1 to 3, the present invention further includes, in addition to embodiment 1, a

A first linear driving member 7 for driving the first moving member 1 to move,

a second linear driving member 8 for driving the second moving member 3 to move,

a third linear driving member 9 for driving the third moving member 5 to move,

in this embodiment, the removal of first moving member 1, the removal of second moving member 3, the removal of third moving member 5 is realized by first linear driving piece 7, second linear driving piece 8, the drive of third linear driving piece 9 respectively, can choose for use the pneumatic cylinder to realize required removal guarantee provide sufficient horizontal drawing power and vertical constant pressure can, and in order to guarantee stability, can choose for use two drives side by side to guarantee, the removal of three moving member also need go on the guide rail, guarantee processing accuracy and precision.

Wherein, the first linear driving member 7 comprises a first hydraulic cylinder 701 and a second hydraulic cylinder 702, and further comprises a first spherical hinge sleeve 703 which is slidably arranged at the output end of the second hydraulic cylinder 702, the sliding direction is perpendicular to the output shaft of the second hydraulic cylinder 702, wherein one end of the first moving member 1 is spherically hinged with the output end of the first hydraulic cylinder 701, the other end is spherically hinged with the first spherical hinge sleeve 703,

the second linear driving member 8 comprises a third hydraulic cylinder 801, a fourth hydraulic cylinder 802, and a second spherical hinge sleeve 803 slidably disposed at an output end of the fourth hydraulic cylinder 802 in a direction perpendicular to an output shaft of the fourth hydraulic cylinder 802, wherein one end of the second moving member 3 is spherically hinged to the output end of the third hydraulic cylinder 801, and the other end thereof is spherically hinged to the second spherical hinge sleeve 803,

the hydraulic press further comprises a fifth hydraulic cylinder 704 and a sixth hydraulic cylinder 804, one end of the fifth hydraulic cylinder 704 is connected with the first moving part 1 in a spherical hinge mode, the other end of the fifth hydraulic cylinder 704 is connected with the output end of the first hydraulic cylinder 701 in a spherical hinge mode, one end of the sixth hydraulic cylinder 804 is connected with the second moving part 3 in a spherical hinge mode, and the other end of the sixth hydraulic cylinder 804 is connected with the output end of the third hydraulic cylinder 801 in a spherical hinge mode.

In the embodiment, considering that the fan-shaped plate-shaped material a is delayed in a pulling mode, a final product to be pulled is of a three-dimensional structure, so that the pulling force is difficult to control along the plate surface direction, a connecting structure of the first linear driving part 7 and the first moving part 1 and a connecting structure of the second linear driving part 8 and the second moving part 3 are specially designed, the two structures are the same, and only the connecting structure of the first linear driving part 7 and the first moving part 1 is specifically explained; the first linear driving part 7 comprises a first hydraulic cylinder 701 and a second hydraulic cylinder 702, and pushes the first moving part 1 from two ends together, so the operation is more stable, and two ends of the first moving part 1 are connected with the output end of the first hydraulic cylinder 701 in a spherical hinge manner, and the other end of the first moving part is connected with a first spherical hinge sleeve 703 sliding on the output end of the second hydraulic cylinder 702 in a spherical hinge manner, so when the first hydraulic cylinder 701 and the second hydraulic cylinder 702 are slightly out of synchronization, the two ends of the first moving part 1 can be connected in a spherical hinge manner to realize respective driving, so that the fan-shaped plate-shaped material a is ensured to be more uniformly drawn, and the generation of redundant stress is avoided; considering that the first moving part 1 rotates when the first hydraulic cylinder 701 and the second hydraulic cylinder 702 are out of synchronization, the first ball hinge sleeve 703 is designed to be arranged at the output end of the second hydraulic cylinder 702 in a sliding manner, and the sliding direction is perpendicular to the output direction of the second hydraulic cylinder 702, so that the two ball hinge points can move even if the distance between the two ball hinge points is increased, and the driving stability and the driving feasibility are well ensured.

One end of the fifth hydraulic cylinder 704 is connected with the first moving part 1 in a spherical hinge mode, the other end of the fifth hydraulic cylinder 704 is connected with the output end of the first hydraulic cylinder 701 in a spherical hinge mode, the pitching angle of the first moving part 1 can be adjusted through the fifth hydraulic cylinder 704, the first clamping assembly 2 on the first moving part 1 can clamp the plate surface of the fan-shaped plate-shaped material a along the plate surface direction, pulling force for plate surface laying down is provided, and a better drawing effect is achieved.

Example 3

As shown in fig. 1 to 3, on the basis of the embodiment 1, further, a plurality of material clamping units 2a are all arranged in a sliding way in an ascending and descending way,

the first moving part 1 and the second moving part 3 are respectively provided with a plurality of vertical guide rails 101 which are sequentially arranged, the material clamping units 2a are arranged on the vertical guide rails 101 in a lifting sliding manner, the projection of the arrangement direction of the material clamping units 2a on a vertical surface is arc-shaped when the material clamping units are adjusted in a lifting manner,

the material clamping device further comprises a vertical limiting structure 10, and the vertical limiting structure is used for limiting the material clamping unit 2a on the vertical guide rail 101 up and down after the position adjustment is completed in the vertical sliding mode.

In this embodiment, on one hand, the fan-shaped plate-shaped material a needs to be drawn into a paraboloid, and one part of the paraboloid is, for example, one eighth, and then one part of eight same paraboloids is spliced into a complete paraboloid, so that the processed workpiece is three-dimensional, and on the other hand, the two ends of the fan-shaped plate-shaped material a are convenient to be asymmetric, and on the basis of the two points, the drawing difficulty is increased by several times, and therefore, the required drawing force needs to be parallel to the material surface, so that the directions of the drawing forces on the two sides of the fan-shaped plate-shaped material a are different, and the required drawing force on each side is also different. In response to this problem, the inventor has made a continuous improvement in that the clamping units 2a are designed to be slidably disposed each up and down so as to be adjusted in advance to a proper position to clamp the fan-shaped plate-like material a. Considering that the paraboloid is obtained by rotating the paraboloid by 180 degrees in a parabolic manner, in this embodiment, all the material clamping units 2a of the first clamp assembly 2 are adjusted to be arranged in a circular arc shape in the vertical direction, and all the material clamping units 2a of the second clamp assembly 3 are adjusted to be arranged in a circular arc shape, so that the drawing force provided by the first clamp assembly 2 and the second clamp assembly 3 can be better parallel to the fan-shaped plate-shaped material a, the generation of internal stress and redundant deformation caused by drawing in an included angle can be avoided, and the drawing force is more reasonable, so that the drawing effect of the fan-shaped plate-shaped material a is very regular, and the cutting and clipping of a large amount of leftover materials are not needed after the drawing is finished like in the related technology. The fan-shaped plate-shaped material a can complete a certain radian, so that the fan-shaped plate-shaped material a cannot be clamped because all the clamping units 2a of the first clamping assembly 2 are adjusted to be arranged in a circular arc shape.

Example 4

As shown in fig. 5 to 6, on the basis of embodiment 3, further, the vertical guide rails 101 are transversely slidably disposed on the first moving member 1 and the second moving member 3, and the sliding direction is along the radial direction of the fan-shaped plate-shaped material a, so that the plurality of vertical guide rails 101 are arranged along an arc,

and the device also comprises a transverse locking piece 11 for locking the vertical guide rail 101 after the position adjustment is completed by transverse sliding.

In this embodiment, in order to further ensure that the drawing force can be along the plate surface direction of the fan-shaped plate-shaped material a, the vertical guide rail 101 is particularly designed to be adjustable in position, so that the drawing force can be along the radial direction of the fan-shaped plate-shaped material a, and the drawing force can be ensured along the plate surface of the fan-shaped plate-shaped material a in this dimension. The vertical guide rails 101 are adjusted to be arranged along an arc shape, the projection of the material clamping units 2a on the vertical guide rails on the horizontal plane is the arc shape, the requirement of drawing force in the direction parallel to the plate surface is further met aiming at the paraboloid of the three-dimensional structure, the uniform stress is ensured, the generation of internal stress is avoided, the processing precision is ensured, and the problems that a larger sector-shaped plate-shaped material a is required before processing and a large amount of leftover materials are required to be cut after processing are further solved.

Wherein, when the horizontal adjustment of pressing from both sides material unit 2a needs to be carried out, unscrew horizontal adjusting bolt earlier, after the horizontal sliding position of adjustment vertical guide rail 101 is confirmed, with horizontal adjusting bolt locking can, avoid the position to change by the locking of horizontal retaining member 11, horizontal retaining member 11 can select for use locking bolt etc. to lock and can not be repeated here.

Example 5

As shown in fig. 5 to 6, further, the vertical guide rail 101 is a guide rod, the material clamping unit 2a can rotate around the vertical guide rail 101 as an axis while sliding up and down on the vertical guide rail 101, and the vertical limiting structure 10 limits only the material clamping unit 2a to move up and down on the vertical guide rail 101 and does not limit the rotation on the vertical guide rail 101.

In the embodiment, in order to further realize that the drawing force is along the plate surface direction of the fan-shaped plate-shaped material a, the material clamping units 2a are designed to have a certain rotation amount, and can rotate so as to constantly meet the requirement that the drawing force of each material clamping unit 2a can be uniformly distributed, so that the drawing force of each material clamping unit 2a can constantly follow the radial direction of the fan-shaped plate-shaped material a, namely from drawing beginning to drawing ending, the direction can be automatically adjusted, the internal stress and redundant deformation caused by improper drawing direction can be well eliminated, the drawn paraboloid is further ensured to be more perfect, and finally cut leftover materials are reduced.

The rotation of the clamping unit 2a is realized by designing the vertical guide rail 101 as a guide rod, the clamping unit 2a can slide on the vertical guide rail 101 in a lifting manner and can also rotate around the vertical guide rail 101 as an axis, wherein the limiting function of the vertical limiting structure 10 is only used for limiting the lifting of the clamping unit 2a on the vertical guide rail 101 and does not limit the rotation on the vertical guide rail 101, so that the vertical limiting can be ensured, the rotation around the vertical direction can not be influenced, and the drawing force is ensured to be kept along the radial direction of the fan-shaped plate-shaped material a at any time. It should be noted that, although the material clamping unit 2a cannot rotate around the vertical guide rail 101 as long as the material clamping unit 2a is clamped on the edge of the fan-shaped plate-shaped material a without loosening and displacement relative to the material, the fan-shaped plate-shaped material a can generate overall material deformation during the drawing process, and becomes larger and longer, so that stress to a certain extent occurs, and through improvement of the rotational arrangement of the material clamping unit 2a, a part of stress is well eliminated, and the reverse accuracy of the drawing force is ensured. And the rotary design of the material clamping unit 2a can meet the installation clamping adjustment of materials with different specifications, so that the material clamping unit 2a is operated to rotate to a proper angle in the initial material clamping process, for example, the correctness of the drawing force direction can be ensured along the radial direction of the fan-shaped plate-shaped material a, and better drawing processing is realized.

Further, the vertical limiting structures 10 are locking bolts, the vertical limiting structures 10 are arranged on the upper side and the lower side of each material clamping unit 2a,

the sliding block 12 is arranged on the first moving part 1 and the second moving part 3 in a transverse sliding mode, the transverse sliding direction is the same as that of the vertical guide rail 101,

vertical limit structure 10 is arranged on sliding block 12 in a threaded manner, and the end of vertical limit structure 10 is provided with a guide head 10a, and a circumferential groove 201b is arranged on clamp body 201, and guide head 10a is arranged in circumferential groove 201b in a sliding manner, wherein circumferential groove 201b is coaxial with vertical guide rail 101.

In this embodiment, in order to realize the limiting function of the vertical limiting structure 10 as only limiting the material clamping unit 2a to ascend and descend on the vertical guide rail 101 and not limiting the material clamping unit to rotate on the vertical guide rail 101, the sliding block 12 is specially designed to realize the vertical locking of the locking bolt and the sliding of the material clamping unit 2a on the first moving member 1 and the second moving member 3 along with the horizontal direction; when the vertical position of the clamping unit 2a on the first moving member 1 and the second moving member 3 needs to be adjusted, the vertical limiting bolts are loosened, the clamping unit 2a is adjusted to a proper height, and then the vertical adjusting bolts are screwed, wherein the two vertical limiting bolts are respectively limited in the vertical direction, so that the position stability is ensured; the vertical limiting structure 10, that is, the end of the vertical limiting bolt, is provided with a guiding head 10a, the clamp body 201 is provided with a circumferential groove 201b, and the guiding head 10a is slidably disposed in the circumferential groove 201b, so that the vertical limiting structure 10 can only limit the lifting movement of the body 201 of the clamping unit 2a, and cannot limit the rotation thereof, thereby realizing the required rotation adjustment.

Example 6

As shown in fig. 7, in addition to embodiment 1, further, the first wedge and clamping block 202 has a first clamping face 202a, the second wedge and clamping block 203 has a second clamping face 203a, the first clamping face 202a and the second clamping face 203a are arranged opposite to each other for clamping the edge of the fan-shaped plate-shaped material a from above and from below respectively,

the first clamping surfaces 202a and the second clamping surfaces 203a are both T-shaped, two adjacent first clamping surfaces 202a are arranged in a stepped manner, two first clamping surfaces 202a on two sides of one first clamping surface 202a are flush with each other, and the first clamping surfaces 202a and the second clamping surfaces 203a which are opposite up and down are arranged in a staggered manner.

The first clamping face 202a and the second clamping face 203a each have friction grooves.

In order to achieve that after drawing processing is completed, the cut leftover materials as few as possible, particularly two ends of a fan-shaped plate-shaped material a, need to meet the requirement that the two ends of the material can be in a parabolic shape with specifications beside the position clamped by the clamping unit 2a, in this embodiment, the clamping unit 2a can cause stress influence on the position beside the position clamped by the material, because the material is pressed and drawn, and usually only moves, in the clamping unit 2a, the first clamping surface 202a of the first wedge clamping block 202 and the second clamping surface 203a of the second wedge clamping block 203 are further improved, so that the fan-shaped plate-shaped material a can be well drawn around the clamped position, wherein the first clamping surface 202a and the second clamping surface 203a are not in a conventional square shape, but are designed to be in a T shape, and two adjacent first clamping surfaces 202a are arranged in a stepped manner, namely, a staggered design is adopted, the first clamping surface 202a and the second clamping surface 203a which are opposite up and down, the left and right clamping surface 203a clamping surface and the second clamping surface 203a clamping surface are staggered design is staggered, so that the whole is staggered design can provide a staggered stress, and a certain degree of a staggered design is avoided, and a certain degree of a certain stress is also not consistent with a concentrated stress, so that the internal stress is kept.

Example 7

As shown in fig. 8 to 10, in embodiment 1, the press mold member 6 further includes

A center mold 601 fixedly provided on the third moving member 5,

a plurality of side pressing dies 602 are arranged on one side of the central die 601 close to the first clamp assembly 2 and one side of the central die 601 close to the second clamp assembly 4, and are mutually abutted, and the side pressing dies 602 are arranged on the third moving member 5 in a lifting and sliding manner, wherein the upper surfaces of the central die 601 and the side pressing dies 602 form the same paraboloid, and after the side pressing dies 602 descend, an abdicating space 603 for accommodating the first clamp assembly 2 and the second clamp assembly 4 is reserved on the upper surface of the side pressing dies 602,

and a fifth linear driving assembly 604 disposed on the third moving member 5, wherein each side mold 602 is driven by at least one fifth linear driving assembly 604 to move up and down until the upper surface is aligned with the upper surface of the central mold 601.

In the embodiment, considering that after the sector-shaped plate-shaped material a is drawn and lengthened, the jacking mold piece 6 can only jack the middle of the sector-shaped plate-shaped material a, and the distance between the jacking mold piece 6 and the clamped two ends cannot be jacked, under the condition that the jacking mold piece 6 does not jack, the material is easy to not meet the shape of a paraboloid, so that the precision of the product during communication is reduced, in order to ensure that more parts, particularly the plate surfaces of the central part and the edge part, meet the paraboloid, the inventor continuously improves, and particularly designs that the jacking mold piece 6 can be expanded and supplemented after the sector-shaped plate-shaped material a is drawn and lengthened, so that each drawn position can be pressed by the jacking mold piece 6, and the precision of the product is ensured. The jacking mold part 6 is divided into two parts, wherein jacking is carried out at the beginning of the central mold 601, the first clamping assembly 2 and the second clamping assembly 4 are very close to the central mold 601 at the moment, when the sector plate-shaped material a is drawn and lengthened, a certain distance exists between the first clamping assembly 2 and the central mold 601 and the second clamping assembly 4, the material cannot be jacked completely by the mold, and at the moment, the side pressing mold 602 is lifted to supplement jacking, so that the sector plate-shaped material a can be jacked completely all the time, the parabolic integrity of the product is well ensured, and the quality and the precision of the product are improved. The edge pressing mold 602 needs to be capable of lifting, the lifting is to realize that the upper surface and the upper surface of the central mold 601 are combined into a paraboloid, the descending is to give way for the first clamping assembly 2 and the second clamping assembly 4, the fan-shaped plate-shaped material a is clamped and fixed through the giving way space 603, the driving process is realized by the fifth linear driving assembly 604, and the requirement that a hydraulic cylinder is selected can be well met.

Further, the knock die member 6 further includes a guide groove 605 and a guide block 606, the guide groove 605 is formed on the center die 601 or on the side die 602, the guide block 606 is formed on the side die 602, one guide block 606 is slid in the adjacent one of the guide grooves 605, and the upper end portion of the guide groove 605 serves to limit the highest position of the upward movement of the guide block 606 so that the upper surface of the side die 602 does not move upward beyond the upper surface of the center die 601.

In this embodiment, in order to ensure the stability of the rising of the side pressing mold 602, the guide groove 605 and the guide block 606 are specially designed, so as to ensure that the paraboloid jointly formed by the upper surfaces of the central mold 601 and the side pressing mold 602 can be sufficiently level, and the upper end of the guide groove 605 is used for limiting the highest position of the guide block 606, so that the upper surface of the side pressing mold 602 does not move upwards beyond the upper surface of the central mold 601, thereby further ensuring the level degree of the paraboloid formed by the upper surfaces of the central mold 601 and the side pressing mold 602, and avoiding the reduction of the product quality.

Example 8

The embodiment of a double-acting pressure type drawing method for producing a reflecting surface of a communication antenna comprises the following steps,

s1, heating a fan-shaped plate-shaped material a,

s2, the first clamping component 2 clamps one end of the fan-shaped plate-shaped material a, the second clamping component 4 clamps the other end of the fan-shaped plate-shaped material a for drawing, and meanwhile, the jacking die piece 6 jacks the bottom surface of the fan-shaped plate-shaped material a, wherein the first clamping component 2 is kept close to the central die 601 without leaving a space, the second clamping component 4 is kept close to the central die 601 without leaving a space,

and S3, after the sector plate-shaped material a is lengthened, the first clamp assembly 2 and the central mold 601 form a stretching interval, the second clamp assembly 4 and the central mold 601 form a stretching interval, at the moment, the side pressing mold 602 moves upwards to enter the stretching interval, the upper surface of the side pressing mold and the upper surface of the central mold 601 press the bottom surface of the sector plate-shaped material a together, and the rest side pressing molds 602 move upwards in sequence to draw the sector plate-shaped material a into a paraboloid.

In the embodiment, when the sector plate-shaped material a is shaped into a paraboloid by bottom jacking, the edge pressing die 602 can constantly ensure that the clamped edge of the sector plate-shaped material a has a smaller distance from the die, namely the sector plate-shaped material a is drawn to be drawn, more areas can be jacked by the die, and the sector plate-shaped material a can be directly spliced into the paraboloid by simple cutting after drawing is finished, so that the final product can be used for cutting less leftover materials, the paraboloid is more standard, the product quality and precision are well improved, and the communication quality is improved.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-acting pressure type drawing machine for producing the reflecting surface of communication antenna is used for drawing sector plate-shaped material (a) into paraboloid and is characterized by comprising

A first moving member (1) movably disposed,

a first clamping component (2) which is arranged on the first moving part (1) to move along and is used for clamping one end of the fan-shaped plate-shaped material (a),

a second moving member (3) movably disposed,

a second clamping component (4) which is arranged on the second moving part (3) and moves along with the second moving part and is used for clamping the other end of the fan-shaped plate-shaped material (a),

a third moving member (5) movably disposed,

the jacking mold piece (6) is arranged on the third moving piece (5), the jacking mold piece (6) is driven to move after the third moving piece (5) moves, and the jacking mold piece is used for jacking the plate surface of the fan-shaped plate-shaped material (a),

wherein the first clamp assembly (2) and the second clamp assembly (4) each comprise

A plurality of material clamping units (2 a) which are arranged in sequence, wherein each material clamping unit (2 a) comprises

A clamp body (201) having an opening (201 a), the opening (201 a) being for the fan-shaped plate-like material (a) to protrude into,

a first wedging block (202) slidingly arranged on the clamp main body (201) and positioned in the opening (201 a),

a second wedge clamping block (203) which is arranged on the clamp main body (201) in a sliding manner and is positioned in the opening (201 a), wherein the sliding direction of the first wedge clamping block (202) and the sliding direction of the second wedge clamping block (203) form an acute angle with the plate surface of the fan-shaped plate-shaped material (a), and the sliding directions of the first wedge clamping block and the second wedge clamping block are symmetrical about the plate surface of the fan-shaped plate-shaped material (a), wherein one or two of the first wedge clamping block (202) and the second wedge clamping block (203) of the first clamp assembly (2) are used for clamping one end of the fan-shaped plate-shaped material (a) after being moved, and one or two of the first wedge clamping block (202) and the second wedge clamping block (203) of the second clamp assembly (4) are used for clamping the other end of the fan-shaped plate-shaped material (a) after being moved,

a fourth linear drive (204) urging the first cleat block (202) and/or the second cleat block (203) to move in abutment.

2. The double-acting pressure type drawing machine for producing the reflecting surface of the communication antenna as claimed in claim 1, further comprising

A first linear driving member (7) for driving the first moving member (1) to move,

a second linear driving member (8) for driving the second moving member (3) to move,

a third linear driving member (9) for driving the third moving member (5) to move,

the first linear driving part (7) comprises a first hydraulic cylinder (701), a second hydraulic cylinder (702) and a first spherical hinge sleeve (703) which is arranged at the output end of the second hydraulic cylinder (702) in a sliding way, the sliding direction of the first linear driving part is vertical to the output shaft of the second hydraulic cylinder (702), one end of the first moving part (1) is connected with the output end of the first hydraulic cylinder (701) in a spherical hinge way, the other end of the first moving part is connected with the first spherical hinge sleeve (703) in a spherical hinge way,

the second linear driving part (8) comprises a third hydraulic cylinder (801) and a fourth hydraulic cylinder (802), and further comprises a second spherical hinge sleeve (803) which is arranged at the output end of the fourth hydraulic cylinder (802) in a sliding mode, the sliding direction of the second spherical hinge sleeve is perpendicular to the output shaft of the fourth hydraulic cylinder (802), one end of the second moving part (3) is connected with the output end of the third hydraulic cylinder (801) in a spherical hinge mode, the other end of the second moving part is connected with the second spherical hinge sleeve (803) in a spherical hinge mode,

the hydraulic press is characterized by further comprising a fifth hydraulic cylinder (704) and a sixth hydraulic cylinder (804), one end of the fifth hydraulic cylinder (704) is connected with the first moving part (1) in a spherical hinge mode, the other end of the fifth hydraulic cylinder (704) is connected with the output end of the first hydraulic cylinder (701) in a spherical hinge mode, one end of the sixth hydraulic cylinder (804) is connected with the second moving part (3) in a spherical hinge mode, and the other end of the sixth hydraulic cylinder (804) is connected with the output end of the third hydraulic cylinder (801) in a spherical hinge mode.

3. The double acting pressure type drawing machine for producing the reflecting surface of the communication antenna according to claim 1, wherein a plurality of the material clamping units (2 a) are arranged in a sliding manner in a lifting manner,

the first moving part (1) and the second moving part (3) are respectively provided with a plurality of vertical guide rails (101) which are sequentially arranged, the material clamping units (2 a) are arranged on the vertical guide rails (101) in a lifting and sliding manner, and projections of the plurality of material clamping units (2 a) in the arrangement direction on a vertical surface are arc-shaped when the material clamping units are adjusted in a lifting manner,

the material clamping device is characterized by further comprising a vertical limiting structure (10) which is used for limiting the material clamping unit (2 a) on the vertical guide rail (101) up and down after the position of the material clamping unit is adjusted in a vertical sliding mode.

4. The double acting pressure type drawing machine for producing the reflecting surface of the communication antenna according to claim 3, characterized in that the vertical guide rails (101) are transversely slidably arranged on the first moving member (1) and the second moving member (3) in a radial direction of the fan-shaped plate-shaped material (a) for arranging a plurality of the vertical guide rails (101) in an arc shape,

the device also comprises a transverse locking piece (11) used for locking the vertical guide rail (101) after the position adjustment is completed through transverse sliding.

5. The double-acting pressure type drawing machine for producing the reflecting surface of the communication antenna according to claim 4, wherein the vertical guide rail (101) is a guide rod, the material clamping unit (2 a) can slide up and down while sliding on the vertical guide rail (101) and can rotate around the vertical guide rail (101) as an axis, and the vertical limiting structure (10) is limited only by limiting the material clamping unit (2 a) to move up and down on the vertical guide rail (101) and not limited by rotating on the vertical guide rail (101).

6. The double-acting pressure type drawing machine for producing the reflecting surface of the communication antenna according to claim 5, wherein the vertical limiting structures (10) are locking bolts, the vertical limiting structures (10) are arranged on the upper side and the lower side of each material clamping unit (2 a),

also comprises the following steps of (1) preparing,

a sliding block (12) which is arranged on the first moving part (1) and the second moving part (3) in a transverse sliding mode, the transverse sliding direction is the same as the transverse sliding direction of the vertical guide rail (101),

the vertical limiting structure (10) is arranged on the sliding block (12) in a threaded mode, a guide head (10 a) is arranged at the end portion of the vertical limiting structure (10), a circumferential groove (201 b) is formed in the clamp body (201), the guide head (10 a) is arranged in the circumferential groove (201 b) in a sliding mode, and the circumferential groove (201 b) and the vertical guide rail (101) are coaxial.

7. The double acting pressure type drawing machine for the production of communication antenna reflecting surfaces according to claim 4, characterized in that the first wedge block (202) has a first clamping surface (202 a), the second wedge block (203) has a second clamping surface (203 a), the first clamping surface (202 a) and the second clamping surface (203 a) are oppositely arranged for clamping the edge of the fan-shaped plate-shaped material (a) from above and from below respectively,

wherein the first clamping surfaces (202 a) and the second clamping surfaces (203 a) are both T-shaped, two adjacent first clamping surfaces (202 a) are arranged in a stepped manner, the two first clamping surfaces (202 a) at two sides of one first clamping surface (202 a) are parallel and level, the first clamping surfaces (202 a) and the second clamping surfaces (203 a) which are opposite up and down are arranged in a staggered manner,

the first clamping face (202 a) and the second clamping face (203 a) each have friction grooves.

8. The double-acting pressure type drawing machine for producing the reflecting surface of the communication antenna of claim 1, wherein the top pressing mold member (6) comprises

A central mold (601) fixedly arranged on the third moving member (5),

a plurality of side pressing dies (602) are arranged on one side of the central die (601) close to the first clamp assembly (2) and one side of the central die (601) close to the second clamp assembly (4) in sequence and are mutually attached, the side pressing dies (602) are arranged on the third moving member (5) in a lifting and sliding manner, wherein the upper surface of the central die (601) and the upper surfaces of the side pressing dies (602) form the same paraboloid, and after the side pressing dies (602) descend, yielding spaces (603) for accommodating the first clamp assembly (2) and the second clamp assembly (4) are reserved on the upper surfaces of the side pressing dies (602),

and the fifth linear driving component (604) is arranged on the third moving part (5), and each side die (602) is driven by one fifth linear driving component (604) to move up and down until the upper surface is aligned with the upper surface of the central die (601).

9. The double-acting pressure type drawing machine for producing the reflecting surface of communication antenna of claim 8,

the top pressing die piece (6) further comprises a guide groove (605) and a guide block (606), the guide groove (605) is formed on the central die (601) or the side pressing die (602), the guide block (606) is formed on the side pressing die (602), one guide block (606) slides in the adjacent guide groove (605), and the upper end part of the guide groove (605) is used for limiting the highest position of the guide block (606) moving upwards, so that the upper surface of the side pressing die (602) does not move upwards to exceed the upper surface of the central die (601).

10. A double-acting pressure type drawing method for producing a reflecting surface of a communication antenna, which draws a sector plate-like material (a) into a paraboloid by using the double-acting pressure type drawing machine for producing a reflecting surface of a communication antenna according to any one of claims 8 to 9, characterized by comprising the steps of,

s1, heating a fan-shaped plate-shaped material (a),

s2, clamping one end of the fan-shaped plate-shaped material (a) by the first clamping assembly (2), clamping the other end of the fan-shaped plate-shaped material (a) by the second clamping assembly (4), drawing, and simultaneously pressing the bottom surface of the fan-shaped plate-shaped material (a) by the pressing die piece (6), wherein the first clamping assembly (2) is kept close to the central die (601) without leaving a space, the second clamping assembly (4) is kept close to the central die (601) without leaving a space,

s3, after the fan-shaped plate-shaped material (a) is lengthened, a stretching distance is formed between the first clamp assembly (2) and the central die (601), a stretching distance is formed between the second clamp assembly (4) and the central die (601), at the moment, the side pressing die (602) moves upwards to enter the stretching distance position, the upper surface of the side pressing die and the upper surface of the central die (601) press the bottom surface of the fan-shaped plate-shaped material (a) together, and the rest side pressing dies (602) move upwards in sequence to draw the fan-shaped plate-shaped material (a) into a paraboloid.