WO2011109973A1

WO2011109973A1 - Multi-station female die revolving upsetting press and processing method thereof

Info

Publication number: WO2011109973A1
Application number: PCT/CN2010/074363
Authority: WO
Inventors: 杨东佐
Original assignee: Yang Dongzuo
Priority date: 2010-03-12
Filing date: 2010-06-24
Publication date: 2011-09-15
Also published as: CN101817052A; CN101817052B

Abstract

Disclosed are a multi-station female die revolving upsetting press and a processing method thereof, wherein a female die unit includes rotary female die seats (8, 104, 201, 300) and female dies ( 77, 76, 9, 74, 75, 302, 303, 304, 305). The number of female dies composed of the female dies (77, 302) in the feeding position, the female dies (76, 303) in the discharging position and the female dies (9, 74, 75, 304, 305) in the molding positions corresponding to the punches (5, 72, 73, 300, 301) respectively is two more than that of punches (5, 72, 73, 300, 301). A blank pushing mechanism is provided at the position corresponding to the female dies (77, 302) in the feeding position at the punches (5, 72, 73, 300, 301) side. An empty-avoiding shearing-clamping mechanism and an empty-avoiding space are provided on a large glider (3) at the punches (5, 72, 73, 300, 301) side, and an empty-avoiding position used when the workpiece is ejected is provided corresponding to the discharging position. The processing method thereof includes the step of swing of the female dies (77, 76, 9, 74, 75, 302, 303, 304, 305) from the feeding position to the molding positions and the discharging position. The advantages of the present invention are that feeding and discharging do not need occupy the upsetting-forging time of the workpiece, the work efficiency is increased, there is no relation between the feeding, discharging and the stroke of the punch, and the workpiece is avoided to be damaged because of the stroke.

Description

Instruction manual

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-station die rotary upsetting machine and a working method, and more particularly to a standard part for high speed forming fasteners and the like. Multi-station die rotary forging machine and working method. Background technique

In the existing upsetting machine, the die is generally fixed to the fuselage, and the transposition between the processes is realized by the back and forth movement of the punch or the clamping mechanism such as the clamp to clamp the blank from one die to the other. This upsetting machine has a complicated structure and is particularly difficult to achieve high speed upsetting. In order to solve the problem of high-speed upset forging, the invention patent of the patent number ZL87105260. 1 discloses a multi-station concave-die rotary high-speed upsetting machine which provides at least three or more concave molds on a rotary die holder. The slider is to be provided with a die corresponding to the die of the die holder and of the same number. The multi-station die rotary upsetting machine disclosed in the invention comprises a double punch cold nail head machine HC produced by West German Sea Company disclosed in the prior art, the number of die and the die die The number is the same. Therefore, the female mold at the feeding position is the same concave mold as the female mold at the first forming position, and the female mold at the discharge position is the same concave mold as the female mold at the final forming position of the workpiece. Before the blank is clamped to the feeding position by the trimming position, the stroke of the die moving away from the die needs to be greater than the length of the workpiece, and then the blank is clamped from the trimming position to the feeding position, and then the first The secondary forming die punches the blank into the die for the first upset forming. When the workpiece is ejected, the die needs to be reset away from the die and its travel stroke must be greater than the length of the workpiece. In the existing upsetting machine, since the die at the feeding position and the discharging position are used for molding, on the one hand, the feeding and discharging need to occupy the time of upsetting of the workpiece, which affects the work efficiency; In the case of the existing upsetting machine, for example, when forging a workpiece of 100 mm length, in order to have sufficient feeding and discharging space, the stroke of the die must exceed a certain distance of the length of the workpiece, and the stroke of the die generally needs 145 mm-155 mm. This not only greatly reduces the working speed of the upsetting machine, but also increases the stroke wear of the large slider and the movement energy of the machine, and greatly increases the volume and cost of the upsetting machine. For the upsetting of some particularly long workpieces, This kind of existing upsetting machine is difficult to solve technical problems. Summary of the invention

A first object of the present invention is to provide a multi-station die rotary upsetting machine which can realize high speed upsetting and easy upsetting of a long workpiece. A second object of the present invention is to provide a multi-station die rotary upsetting machine capable of achieving high speed upsetting and easy upsetting of a long workpiece.

The utility model relates to a multi-station concave die rotary upsetting machine, which comprises a large sliding block, a die assembly fixed on the large sliding block, a large sliding block driving mechanism for moving the large sliding block back and forth, a concave die assembly, a cutting material clamping mechanism , the workpiece ejection mechanism, the die indexing device for rotating the die to the set position, the die positioning device for stopping the die at the set position, the top material mechanism; the die assembly includes only the rotation relative to the base a die holder, two or more concave molds uniformly distributed in the die holder along the circumference of the die; the number of the die is two more than the number of the die, including the die at the feeding position, a die at a material position and a die corresponding to the die at a position corresponding to the die; a blank advancement mechanism in the die corresponding to the feed position at the die position on the side of the die, on the side of the die The large slider is provided with a sheltering material clamping mechanism, a blanking space of the blank propulsion mechanism, and a discharge avoidance position when the workpiece is ejected corresponding to the discharge position. Both the feeding position and the discharging position are provided with a die which is not used for forming and a corresponding avoiding position. On the one hand, when the die holder stops rotating, the cut blank is simultaneously clamped to the feeding position and is pushed by the blank pushing mechanism. In the die which advances the feeding position, the workpiece in the die at the discharge position is simultaneously ejected by the workpiece ejection mechanism, so that the feeding and discharging do not need to occupy the time of upsetting of the workpiece, and the upsetting, feeding and the like can be realized. At the same time, the discharge work is carried out at the same time, which greatly improves the work efficiency; more importantly, when the existing upsetting machine is forging a workpiece of 100 mm length, in order to have sufficient feeding and discharging space, the stroke of the die must exceed the workpiece. The length of the die is 145mm-155mm, which not only greatly reduces the working speed of the upsetting machine, but also increases the stroke wear of the large slider and the movement energy of the machine, and greatly increases the equipment of the upsetting machine. Volume and cost, for upsetting some particularly long workpieces, it has always been a difficult technical problem for existing upsetting machines; and the upsetting machine of this technical solution, feeding and discharging The movement of the die does not matter. Regardless of whether the forging is 3mm or 3000mm long, the stroke of the die only needs to satisfy the upsetting of the workpiece head, that is, about 25mm-40mm, and avoids the problem of the existing upsetting machine due to the stroke. When the upsetting is used, the problem of the workpiece is damaged, and the volume and cost of the upsetting machine when the long workpiece is forged is greatly reduced, and the long-term forging machine which is difficult to solve for a long time is solved. The industry world of artifacts.

As a first improvement of the first scheme, the billet advancing mechanism comprises a pusher cam, a pusher cam drive mechanism, a pusher member at one end that can abut against the pusher cam, and a gear shaft fixed to the other end of the pusher swing member, fixed at a push cylindrical gear on the gear shaft, a push rod, a pusher return spring, and a drive tooth that meshes with the push cylindrical gear on the push rod, and one end of the push spring return spring is connected to the pusher , one end is connected to the body. When the large slider drives the die to move the workpiece to the die, the pusher bar can simultaneously move to the die at the feeding position to clamp the cutting mechanism. The blank is advanced into the die at the feed location. The movement stroke of the push rod is generally different from the movement stroke of the large slide. When the length of the workpiece is long, the movement stroke of the push rod must be greater than the length of the blank, and the blank is pushed into the position set by the die, and the slip is large. The stroke of the block only needs to achieve the upsetting of the workpiece head.

As a second improvement of the first solution, the die assembly driving mechanism comprises a crankshaft, a connecting rod mounted on the crankshaft, and a large sliding block pivotally connected with the connecting rod; the discharging avoidance position is corresponding to the discharging arranged on the sliding block a blanking groove for the position and the feeding position; the blank pushing mechanism includes a pushing cam, a pushing cam driving mechanism, and a first pushing member that can be abutted against the pushing cam at one end, and is fixed on the other end of the first pushing member a second pusher shaft, a second pusher fixed on the second pusher shaft, a pusher bar, a pusher return spring; a second pusher cover hole on the pusher bar, The end of the second pusher member away from the second pusher shaft is inserted into the pusher arranging hole, and one end of the pusher return spring is connected to the pusher member, and one end is connected to the body. When the large slider drives the die to move the workpiece toward the die, the pusher bar can simultaneously move to the die at the feeding position, and push the blank clamped by the trimming mechanism into the die of the feeding position. The movement stroke of the push rod is generally different from the movement stroke of the large slide. When the length of the workpiece is long, the movement stroke of the push rod must be greater than the length of the blank, and the blank is pushed into the position set by the die, and the slip is large. The stroke of the block only needs to achieve the upsetting of the workpiece head.

As a common improvement of the first to third embodiments, the top material mechanism comprises a thimble which is installed at one end in the concave mold and corresponds to the concave mold, and a thimble limit abutting member for limiting the other end of the thimble; only when the workpiece is ejected The die exiting position is provided with a workpiece ejecting mechanism, and the workpiece ejecting mechanism comprises an ejecting rod capable of a top ejector pin; the thimble limit resisting member is fixed to the die holder or the body, and the position of the ejector pin resisting member corresponding to the ejector rod is set There is a escaping hole, and the outer diameter of the ejector rod toward the end of the escaping hole is smaller than the aperture of the escaping hole. Since the thimble limit abutting member is fixed to the die holder or the body, the thimble rotates synchronously with the die holder during the rotation of the die holder during the rotation of the die holder, and the thimble limit abutting member during upsetting The ejector pin is subjected to the resistance limit, and the workpiece ejection mechanism corresponding to the ejector in each die is not required to be designed to move back and forth. The workpiece ejection mechanism is only required at the discharge position, so that the structure of the upsetting machine is simple and the debugging is simple and easy. The cost is low; especially during the rotation of the die holder, the thimble does not need to be separated from the die holder, which greatly shortens the movement stroke of the thimble, ensures the smoothness of the ejector ejecting blank, and improves the working efficiency and service life of the thimble. It is easier to achieve fast upset.

As an improvement, a thimble limit abutting member adjusting mechanism for adjusting a distance between the thimble limit abutting member and the die holder is further provided; a guiding post fixed to the die holder is disposed on a side of the die holder away from the die assembly, a sliding slot is arranged on the guiding column corresponding to each thimble, and a friction sliding block is arranged in the sliding slot, and an end of the thimble away from the die holder contacts the friction slider and is resisted by the limit position; the thimble limit abutting member and The body is fixed, and the surface of the friction slider contacting the thimble limit abutting member is larger than the aperture of the escaping hole, One end of the friction slider away from the thimble contacts the thimble limit abutting member and is resisted by the thimble limit abutting member. The thimble limit abutting member adjusting mechanism adjusts the position of the thimble in the concave mold by adjusting the distance between the thimble limit abutting member and the die holder, and when forging the workpiece of different lengths having the same diameter and forming in the concave mold There is no need to replace the ejector pin and the die. The adjustment of the thimble position in all the die is adjusted once, which overcomes the current multi-station upsetting machine. Each station must be adjusted separately, the structure is complicated, the debugging is troublesome, and it takes time and effort. And other shortcomings, improve work efficiency and reduce equipment costs. During the rotation of the die holder, the thimble and the friction slider are stationary with respect to the die holder, and rotate with the die holder, and the thimble limit abutting member and the body are fixed stationary. Due to the increased friction slider structure, during the rotation process, the friction slider has a relative frictional movement with respect to the thimble limit abutting member, and the top has no relative movement for the friction slider, and the concave die seat contacts the thimble limit abutting member when the rotary member rotates. The friction generated by the surface acts on the slider without acting on the thimble, so the thimble is not easily broken, ensuring that the die holder can achieve high-speed rotation and improve the service life of the thimble.

As a further improvement, the thimble limit abutting member adjusting mechanism comprises an adjusting column fixed to the thimble limiting abutting member, the first adjusting member and the second adjusting member passing through the adjusting column, the first bolt and the two first adjusting nuts, being installed a first spring is disposed between the first adjusting member and the second adjusting member; the first adjusting member adjacent to the die holder is fixed to the body, and the adjusting column is in clearance with the first adjusting member, away from the die holder The second adjusting member is fixed to the adjusting column, one end of the first bolt is fixed on the first adjusting member, and the other end of the first bolt passes through the second adjusting member and is matched with the second adjusting member, and the adjusting nut is mounted on the first bolt And placed on the side of the second adjusting member away from the first adjusting member. The adjustment structure is convenient for adjusting the position of the thimble relative to the die holder. Only two adjustment nuts need to be adjusted to adjust the position of all the thimbles, and the ejector pins of each station of the current multi-station upsetting machine need to be separately adjusted. Compared, adjustment is very convenient.

As a further improvement, the thimble limit abutting member adjusting mechanism comprises a second bolt and a limit sleeve which are only rotatable and non-axially movable; a guiding hole for the thimble limiting abutting member is arranged on the body body, and the guiding hole and the thimble limit are arranged Between the resisting members, a rotation preventing mechanism for preventing the thimble limit resisting member from rotating relative to the body is arranged, and the thimble restricting resisting member and the guiding hole are matched with each other; the second bolt is away from the die holder at one end of the rotating clamping end, and the second bolt is a limiting boss is arranged near the rotating clamping end, and one end of the second bolt near the die holder is a threaded end; the limiting sleeve is fixed to the body, and a step corresponding to the second bolt and the limiting boss is arranged in the limiting sleeve The hole, the large hole of the stepped hole faces the side of the die holder; the threaded end of the second bolt passes through the thimble limit abutting member, and the second bolt is threadedly engaged with the thimble limit abutting member. This adjustment structure is simple in structure, and it is convenient to adjust the position of the thimble relative to the die holder.

As an improvement of the fourth solution, the thimble limit abutting member is fixed to the die; in each ejector casing, there is a return spring, and the return spring is placed between the thimble and the die seat; corresponding to each of the thimble limit abutting members The position of the thimble is provided with a vacant hole, and the outer diameter of the thimble toward the end of the escaping hole is larger than the diameter of the escaping hole. When each die is rotated to the discharging position, the workpiece ejector mechanism is ejector pin, and the thimble is in the concave die. The workpiece is ejected. During the rotation of the die holder, the thimble and the thimble limit abutting member rotate together, which makes the structure of the upsetting machine simpler.

As a common improvement of the first to third embodiments, the die holder and the die have the same thickness, which is equal to the length of the workpiece to be formed in the die; the workpiece ejection mechanism is provided only at the position of the die where the workpiece is ejected, and the workpiece is ejected. The mechanism comprises an ejector rod of a top ejector pin; the forming hole of the workpiece formed in the die is resisted by the workpiece limit abutting member fixed by the body, and the ejector rod is arranged on the workpiece limit abutting member. The length of the workpiece to be formed in the die is the same as the thickness of the die and the die holder, and the thimble is not provided in the die, so that the problem that the thimble and the die holder are separated when the die holder is rotated is not caused. The structure of the resisting member is simple. When the upsetting machine is upset, the ejector rod of the workpiece ejecting mechanism projects into the workpiece resisting member and comes into contact with the end surface of the female mold. An inward chamfer may be provided on the side of the molding cavity of the die away from the die to prevent the workpiece from entering between the die and the workpiece ejection member during molding, so that the workpiece is difficult to eject.

As a common improvement of the first to third embodiments, the die positioning device comprises a first swing drive shaft, a drive mechanism of the first swing drive shaft, a first swing fixed to the first swing drive shaft, and a second swing shaft fixed to the body. a second swinging member pivotally coupled to the second swinging shaft, a positioning rod, a positioning rod guide sleeve fixed to the body, and a second return spring; the positioning rod includes two small ends extending toward the small end of the female mold base In the die holder, a small end away from the die holder passes through the guide sleeve and a mounting hole of the second swing member is disposed on the small end, and the second return spring is installed between the guide sleeve and the positioning rod, and one end of the second swing member is extended In the mounting hole of the guiding sleeve, the other end of the second pendulum can abut the first pendulum. When the die holder needs to be stopped and there is no external driving force, the positioning rod extends into the female mold seat under the action of the second return spring, and the inertia action can be overcome to make the die holder accurately and reliably stay at the set position. When the female mold holder needs to be rotated, the positioning rod is separated from the female mold base by the driving force of the driving mechanism.

As a common improvement of the first to third embodiments, the die indexing device includes a first transmission tooth disposed on a circumference of the die holder, a disk provided with a second transmission tooth engaged with the first transmission tooth, and a circle for driving the disk to rotate The disk drive mechanism; the circumference of the disk of the second transmission tooth is the ratio of the circumference of the disk to the number of the die. The die indexing device with a partial gear on the disc is adopted, and the structure is simple and reliable.

As a common improvement of the first to third embodiments, a die holder is disposed outside the die holder, and a first end cover and a second end cover for limiting the die holder in the die sleeve are disposed at both ends of the die holder. The first end cover is adjacent to the die assembly, the first end cover is fixed on the die holder, the second end cover is fixed on the die holder and is restrained in the die holder; the corresponding die in the die holder The location is provided with a through hole for avoiding empty discs. The first end cap and the second end cap simply and reliably limit the female mold base to the female mold holder only rotatably. As a common improvement of the first to third schemes, the cutting material clamping mechanism comprises a cutting rod, a cutting rod driving mechanism for driving the reciprocating movement of the cutting rod, a cutting knife fixed on the cutting rod, and a clamping knife for clamping The clamping mechanism of the blank, the clamping mechanism comprises a clamping knife, and the cutting knife and the clamping knife cooperate with each other to form a receiving portion for holding the blank, so that the clamping knife and the cutting knife are opened and the blank is placed at the set position. The clamping knife opening mechanism is further provided with a receiving portion for resetting and closing the clamping knife relative to the cutting knife to form a holding blank, and a limit resetting of the clamping mechanism for restricting the movement of the clamping knife during the cutting of the blank In the feeding position, the width of the receiving portion of the holding blank in the moving direction of the cutting knife is larger than the diameter of the blank; in the trimming position, the clamping knife is fixed relative to the cutting knife, and the receiving portion of the holding blank is not Variety. The trimming position is a position where the blank is deformed from the cutting blade and the clamping knife to deform the blank to the position where the blank is cut, that is, the position where the blank is cut. During the process of cutting the blank, the clamping knife is completely fixed with respect to the cutting knife, that is, the receiving portion of the holding blank does not change, so that the blank is not deflected and shaken during the cutting process, so that the cutting is cut. The bottom of the blank is flat, which is equivalent to the effect of a full round cut. Since the bottom of the cut blank is flattened and sent to the next step for upsetting, the force acting on the blank is balanced, and the blank is not deflected and shaken during molding, and the forming quality of the workpiece is high and the precision is high. Low; For workpieces that need to be deformed, it is not easy to cause the blank to be filled in the mold cavity sometimes, and sometimes it is filled on the mold cavity, which is more conducive to reducing the defective rate; and the end face of the forged workpiece is flat. Since the knives and the knives can completely clamp the blank during the cutting of the blank, it is suitable for the trimming of the long blank.

A working method for a multi-station concave die rotary upsetting machine, the working method comprises:

The die is rotated by the die of the feeding position to the die of the forming position, the die of the discharging position, and rotated to the die of the adjacent position, that is, after rotating the angle of 360°/the number of the die, in the concave The die positioning device and the die indexing device work together to stop the rotation of the die holder at the set position; during the rotation of the die holder, the transfer and discharge position of the workpiece in the die from the previous process to the subsequent process is realized. The die moves to the feeding position, and the die of the feeding position moves to the molding position; the die holder stops, and the blank pushing mechanism advances the blank clamped to the feeding position into the concave die of the feeding position, and the die is pressed to the die Directional movement and upsetting of the workpiece in the corresponding concave mold, the workpiece ejection mechanism ejects the formed workpiece in the concave mold at the ejection position; the corresponding action is performed in the blank propulsion mechanism, the die and the ejection mechanism After the reset, the die is rotated by an angle of 360°/the number of the concave molds under the action of the die positioning mechanism and the die indexing device, and thus circulated.

The invention has the beneficial effects that a concave die which is not used for forming and a corresponding avoidance position are provided at both the feeding position and the discharging position, and on the one hand, the feeding and discharging do not need to occupy the time of upsetting of the workpiece, and the upsetting can be realized. The feeding and discharging work are carried out at the same time, which greatly improves the working efficiency. More importantly, the feeding and discharging are not related to the movement stroke of the die. Generally, the stroke of the die only needs to be realized. The upsetting of the head of the piece can avoid the problem that the existing upsetting machine will hit the workpiece due to the stroke problem, and greatly reduce the volume and cost of the upsetting machine when forging the long workpiece, and solve the long-term problem. The existing upsetting machine is difficult to solve the industry world problem of upsetting some particularly long workpieces.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the multi-station die rotary upsetting machine of the first embodiment of the present invention with the body, flywheel and the like removed.

Figure 2 is a perspective view of Figure 1 projected from another direction.

Fig. 3 is a perspective view showing only a partial structure of Embodiment 1 of the present invention.

Fig. 4 is a perspective exploded perspective view showing only a partial structure of Embodiment 1 of the present invention.

Fig. 5 is a perspective exploded view showing the material cutting mechanism of the first embodiment of the present invention.

Fig. 6 is a perspective view showing only a partial structure of a second embodiment of the present invention.

Fig. 7 is a perspective view showing only a partial structure of a third embodiment of the present invention.

Fig. 8 is a perspective view showing only a partial structure of a fourth embodiment of the present invention.

Fig. 9 is a schematic view showing a broken line in Fig. 8. detailed description

Example 1

As shown in FIG. 1 to FIG. 4, a multi-station die rotary upsetting machine includes a die assembly, a die assembly driving mechanism for moving the die assembly back and forth relative to the die assembly, a die assembly, and a trimming material. The mechanism is only a workpiece ejection mechanism provided at the discharge position, a die indexing device for rotating the die at a set angle, and a die positioning device for stopping the die at the set position, and a top material mechanism.

The die assembly drive mechanism includes a crankshaft 1, a link 2 mounted on the crankshaft 1, and a large slider 3 rotatably pivotally coupled to the link 2. The die assembly includes a die pad 4 fixed to the large slider 3, and three die which are uniformly fixed to the die pad 4, that is, a die 5, a die 72, and a die 73.

The die assembly includes a die holder 6 fixed to the body, a die sleeve 7 mounted in the die holder 6 and fixed to the die holder 6, and a die rotatably mounted in the die sleeve 7. The seat 8 uniformly distributes five concave molds fixed in the die holder 8 along the circumferential direction of the die holder. The angle between the central axis of the adjacent die and the central axis of the die holder is 72°. The female die holder 8 is restrained in the first end cap 10 and the second end cap 11 in the female die sleeve 7. A base 12 fixed to the body is further disposed on a side of the die holder 6 away from the die. The first end cover 10 is adjacent to the die, the first end cover 10 is fixed on the die holder 6, and the second end cover 11 is fixed on the die. The die holder 8 is restrained by the base 12 in the die holder 6.

The number of the die is two more than the number of the die, including a die 77 at the feeding position, a die 76 at the discharge position, and a die 9 corresponding to the die 5 and a die corresponding to the die 72. a die 74, a three-die 75 corresponding to the die 73; a die 77 corresponding to the feeding position on one side of the die is provided with a blank pushing mechanism for pushing the blank into the die at the feeding position, corresponding to the large slider 3 The discharge position is provided with a discharge avoidance position when the workpiece is ejected. The discharge avoidance position is a cutout 44 provided on the slider 3 corresponding to the discharge position and the feed position. The billet advancing mechanism includes a pusher cam 52 fixed to the crankshaft 1, a roller 54 having a one end abutting against the pusher cam 52, a pusher swinging member 53, a gear shaft 55 fixed to the pusher swinging member 53, and fixed to the gear shaft 55. The upper push cylindrical gear 56, the push rod 57, the pusher return return spring 58, and the push rod 57 are provided with drive teeth 59 that mesh with the push cylindrical gear 56. The pusher-return spring 58 is connected at the end to the pusher member 53, and one end is connected to the body. The roller 54 is attached to the end of the pusher member 53, and the gear shaft 55 is fixed to the other end of the pusher member 53.

The die positioning device comprises a first swing drive shaft 13, a drive mechanism of the first swing drive shaft 13, a first swing member 14 fixed to the first swing drive shaft 13, and a fixed block 15 fixed to the first swing member 14, fixed a ram 16 on the fixed block 15 , a second swinging shaft (not shown) fixed to the body, and a second swinging member 17 rotatably pivotally connected to the second swinging shaft, the positioning rod 18 is fixed to the body The positioning rod guide sleeve 19, the second return spring 20; the positioning rod 18 includes two small ends, and extends into the die holder 8 toward the small end of the die holder 8, and the small end away from the die holder 8 passes through the guide sleeve 19 and A second mounting spring 21 is disposed on the small end, and a second return spring 20 is mounted between the guide sleeve and the positioning rod 18. One end of the second swinging member 17 extends into the mounting hole 21 of the positioning rod 18, and the second swinging member 17 is further One end can abut the ram 16 . The driving mechanism of the first swing driving shaft 13 includes a first transmission gear 22 fixed to the crankshaft 1, a second transmission gear 23 meshing with the first transmission gear 22, and a first transmission shaft 24 fixed to the second transmission gear 23. (two axes), a first bevel gear 25 fixed to the first transmission shaft 24, a second bevel gear 26 meshing with the first bevel gear 25, and a second transmission shaft 27 fixed to the second bevel gear 26, fixed a third bevel gear 28 on the second transmission shaft 27, a fourth bevel gear 29 meshing with the third bevel gear 28, and a third transmission shaft 30 fixed to the fourth bevel gear 29, fixed to the third transmission shaft 30 The first cam 31 on. A first roller 32 is mounted on one side of the first swing member 14, and the first cam 31 abuts against the first roller 32.

The workpiece ejecting mechanism includes a second cam 33 fixed to the third propeller shaft 30, a third swinging member 34 fixed to the first swinging member drive shaft 13, and a second roller 35 mounted on the third swinging member 34. The ejector lever 35 on the three-piece swinging member 34, the ejector lever 36 which can be abutted against the ejector lever 35, the sleeve 37 fixed to the body, the ejector lever 38 which can abut against the ejector lever 36, and the ejector lever 38 abut the discharge The thimble 39 of the position. One end of the jack 36 and the ejector rod 38 extend into the sleeve 37, respectively. A reset spring is placed over the third jack 36, and a return spring 60 is placed between the sleeve 37 and the jack 36.

A guide post 41 is disposed on a side of the second end cover 11 away from the die, and a sliding slot 42 is disposed on the guide post 41 corresponding to each of the ejector pins 39. The top material mechanism comprises a thimble 39 which is installed at one end in the concave mold and corresponds to the concave mold, a friction slider 43 installed in the sliding groove 42, a thimble limit resisting member 40 for limiting the friction sliding block 43 and adjusting a thimble limit abutting member adjusting mechanism for the distance between the thimble limit abutting member 40 and the die holder 8; an end of the thimble 39 away from the die holder 8 is in contact with the friction slider 43 by the friction slider 43 to resist the limit; One end of the block 43 away from the thimble 39 is in contact with the thimble limiting abutment member 40 and is resisted by the thimble limiting abutment member 40. The thimble limit abutment member 40 is mounted within the base 12 and secured to the base 12. A vacant hole 61 is disposed at a position corresponding to the ejector rod 38 on the thimble limit abutting member 40. The outer diameter of the ejector rod 38 toward the escaping hole 61 is smaller than the diameter of the escaping hole 61, and the friction slider 43 is larger than the escaping hole The aperture of the aperture 61.

The die indexing device includes a first drive tooth 49 disposed on the circumference of the die holder 8, a disk 51 provided with a second drive tooth 50 that meshes with the first drive tooth 49, and a disk drive that drives the disk 51 to rotate The second transmission tooth 50 occupies a circumference of the disc 51 of 1/5 disc circumference; at the position corresponding to the disc of the concave sleeve 7 and the die holder 6, a hollow hole for avoiding the empty disc is provided. (not shown). The disk drive mechanism includes a fifth bevel gear 62 fixed to the second transmission shaft 27, a sixth bevel gear 63 meshing with the fifth bevel gear 62, and a fourth transmission shaft 64 fixed to the sixth bevel gear 63, and The seventh bevel gear 65 fixed to the fourth transmission shaft 64, the eighth bevel gear 66 meshing with the seventh bevel gear 65, and the fifth transmission shaft 67 fixed to the eighth bevel gear 66 are fixed to the fifth transmission shaft 67. The ninth bevel gear 68, the tenth bevel gear 69 meshing with the ninth bevel gear 68, and the sixth transmission shaft 70 fixed to the tenth bevel gear 69, the disc 51 is fixed to the sixth transmission shaft 70.

The thimble limit abutment adjusting mechanism includes an adjusting post 38 fixed to the thimble limiting abutting member 40, a first adjusting member 45 and a second adjusting member 46 passing through the adjusting post 38, a first bolt 71 and two first adjusting nuts 48, a compression spring 47 mounted on the first bolt 71 and disposed between the first adjustment member 45 and the second adjustment member 46; the first adjustment member 45 adjacent to the die holder is fixed to the body, the adjustment post 38 and the first adjustment The second adjusting member 46 away from the die holder is fixed to the adjusting post 38. One end of the first bolt 71 is fixed on the first adjusting member 45, and the other end of the first bolt 71 passes through the second adjusting member 46. The adjusting nut 48 is mounted on the first bolt 71 and disposed on a side of the second adjusting member 46 away from the first adjusting member 45. When the length of the workpiece is changed, the second abutting member 46 moves in the direction of the die or away from the die by rotating the first adjusting nut 48. The second abutting member 46 moves in the direction of the die, the distance between the thimble limiting abutting member 40 and the die holder 8 becomes shorter, the distance in which the thimble 39 is placed in the die becomes longer, and the length of the workpiece becomes shorter; the second abutting member 46 Moving away from the die direction, the distance between the thimble stopper abutting member 40 and the die holder 8 becomes long, and the distance at which the ejector pin 39 is placed in the die and the die holder 8 becomes short, and the length of the workpiece becomes long.

The working method of the upsetting machine includes: the die is rotated from the die of the feeding position to the die of the forming position, the die of the discharging position, and rotated to the die of the adjacent position, that is, after rotating 72°, the circle plate The second transmission tooth 50 on the 51 is disengaged from the first transmission tooth 49 on the die holder 8. The positioning rod 18 enters the die holder 8 under the action of the spring 20, and the die holder 8 stops rotating; the die holder 8 rotates. During the process, the transfer of the workpiece in the die from the previous process to the subsequent process and the die movement of the discharge position to the feeding position are performed, and the die of the feeding position is moved to the molding position; the die holder 8 stops, pushes The rod 57 pushes the blank held by the cutting knife and the clamping knife from the trim position to the feeding position into the concave mold of the feeding position, and the die moves toward the concave mold and smashes the workpiece in the corresponding concave mold. Forging, the ejector rod 38 ejects the formed workpiece in the die at the ejector position; the corresponding action is performed on the push rod 57, the dies and the ejector rod 38, and the rod 18 is reset and positioned on the first swing drive shaft 13 After being separated from the die holder 8 by the driving mechanism or the like, the second driving teeth 50 on the disk 51 mesh with the first driving teeth 49 on the die holder 8, and the die holder 8 starts to rotate, thus circulating. During the rotation of the die holder 8, the thimble 39 and the friction slider 43 rotate synchronously with the die holder 8, the thimble limit abutting member 40 does not move, and the thimble 39 and the friction slider 43 remain stationary with respect to the die holder 8, friction The slider 43 is in contact with the thimble stopper abutting member 40 to generate a sliding friction force, and there is no sliding friction between the ejector pin 39 and the friction slider 43 and between the thimble 39 and the thimble stopper abutting member 40. Example 2

As shown in FIG. 6 , different from the first embodiment, the thimble limit abutting member adjusting mechanism includes a second bolt 100 and a limiting sleeve 102; and a guiding hole (not shown) of the thimble limiting abutting member is disposed on the body; The thimble limit abutting member 103 is provided with a rotation preventing plane 106 for preventing the thimble stopper abutting member 103 from rotating relative to the body, and a escaping hole (not shown) of the second bolt 100, and is provided in the guiding hole. a plane matching plane (not shown), the thimble limiting abutting member 103 is clearance-fitted with the guiding hole; the end of the second bolt 100 away from the die holder 104 is a rotating clamping hex head end 101, and the second bolt 100 is close to the hex head The end 101 is provided with a limiting boss 107. The end of the second bolt 100 near the die holder 104 is a threaded end. The limiting sleeve 102 is fixed to the body, and the second bolt 100 and the limiting boss are disposed in the limiting sleeve 102. a stepped hole of the stepped hole, the large hole 108 of the stepped hole faces the side of the die holder 104; the threaded end of the second bolt 100 passes through the thimble limit abutting member 103 and protrudes into the hollow hole of the guide post 105, the second bolt One end of the limit boss of 100 is restrained by the limit sleeve 102, and the other end is Resist limiting member, and a threaded end 100 of the second bolt thimble limit stop member 103 threadedly engaged. When the length of the workpiece is changed, the hexagonal head end 101 is clamped by rotating the rotation of the second bolt 100, and the second bolt 100 is only rotated without axial movement, and the thimble limit resisting member 103 has only axial movement and no rotation, so the thimble is limited. The abutting member 103 moves toward the die holder 104 or moves away from the die holder 104. The thimble limit abutting member 103 moves toward the die holder 104, the distance between the thimble limiting abutting member 103 and the die holder 104 becomes shorter, and the distance between the thimble 109 placed in the die and the die holder 104 becomes longer, and the length of the workpiece Shortening; when the thimble limit abutting member 103 moves away from the die holder 104, the thimble is limited The distance between the position resisting member 103 and the die holder 104 becomes long, the distance in which the thimble is placed in the die and the die holder 104 becomes short, and the length of the workpiece becomes long.

Example 3

As shown in Fig. 7, unlike the first embodiment, the guide post 206 of the second end cap 205 is not provided with a guide groove. The ejector pin 202 is jacketed with a return spring 203 which is placed between the ejector pin 202 and the die holder 201. The thimble limit abutting member 200 is annular, and is sleeved outside the guiding post 206 and fixed to the guiding post 206. One end of the thimble 202 away from the die is resisted by the thimble limiting resisting member 200. A escaping hole 204 is provided on the thimble limit abutting member 200 corresponding to the position of each ejector pin 202. When each die is rotated to the discharging position, the ejector pin 207 of the workpiece ejecting mechanism is ejector pin 202, and the ejector pin 202 The workpiece in the die is ejected. Thus, during the rotation of the die holder 201, the ejector pin 202 rotates with the die; in addition to the ejection of the workpiece at the discharge position, the ejector pin 202 has a relative movement relative to the die holder 201. In the remaining state, the ejector pin 202 is relatively The die holder 201 is stationary.

Example 4

As shown in Figs. 8 and 9, unlike the first embodiment, the number of the dies is two, including the die 300 and the die 301. The number of the female molds is four, including a concave die 302 at the feeding position, a female die 303 at the discharge position, a female die 304 corresponding to the die 300, and a female die 305 corresponding to the die 301. The die holder 300 and the die have the same thickness, which is equal to the length of the workpiece to be formed in the die; and the die holder 300 is fixed to the die holder (not shown) on the side close to the die, and the limit is resisted. The end cover 306 of the die holder 300, the side of the die holder 300 away from the body is restrained by the base fixed to the body, the forming hole 308 of the workpiece formed in the die is resisted by the base 307, and the workpiece is provided on the base 307. The escape hole 310 of the rod 309. When the upsetting machine is upset, the ejector rod 307 of the workpiece ejecting mechanism projects into the base 307 and comes into contact with the end surface of the die.

The blank propulsion mechanism includes a pusher cam 312 fixed to the crankshaft 311, a roller 313 that can be abutted against the pusher cam 312, and a first pusher 314 that is mounted with a roller 313 at one end, and is fixed to the other end of the first pusher 314. The second pusher shaft 315, the second pusher 316 fixed on the second pusher shaft 315, the pusher 317, the pusher return spring 318, and the second pusher 317 The pusher arranging hole 319 is inserted into the pusher arranging hole 319 from the end of the second pusher 316, and the pusher return spring 318 is connected to the first pusher 314. Upper, one end is connected to the body. A chute 321 is provided on the large slider 320 so that the pusher bar 317 can only move axially.

The die rotating device of the present invention can use the die returning device of the application number 87105260.1.

Claims

Claim

1. A multi-station die rotary upsetting machine comprising a large slider, a die assembly fixed on the large slider, a large slider drive mechanism for moving the large slider back and forth, a die assembly, a trim clip The material mechanism, the workpiece ejection mechanism, the die indexing device for rotating the die to the set position, the die positioning device for stopping the die at the set position, the top material mechanism; the die assembly includes only the opposite base a rotating die holder, two or more die molds uniformly distributed in the die holder along the circumferential direction of the die; characterized in that: the number of the die is two more than the number of the die, including the feed a concave mold at a position, a concave mold at a discharge position, and a concave mold having a molding position corresponding to the die; a blank advancement mechanism in the concave mold corresponding to the feeding position on the side of the die at the die side is provided with a die for pushing the blank into the feeding position The large sliding block on the side of the die is provided with a cutout shearing mechanism, a blanking space for the blanking mechanism, and a discharge avoidance position when the workpiece is ejected corresponding to the discharge position.

2. A multi-station die rotary upsetting machine according to claim 1, wherein: the blank propulsion mechanism comprises a pusher cam, a pusher cam drive mechanism, and a pusher that can be abutted against the pusher cam at one end. a gear, a gear shaft fixed on the other end of the pusher swing, a push cylindrical gear fixed on the gear shaft, a push rod, a pusher return spring, and a push rod engaged with the push cylindrical gear The transmission tooth, the push-piece decoration return spring is connected at one end to the first pusher member, and one end is connected to the body.

3. A multi-station die rotary upsetting machine according to claim 1, wherein: the blank propulsion mechanism comprises a pusher cam, a pusher cam drive mechanism, and a first end that can abut the pusher cam. a pushing member, a second pushing member shaft fixed on the other end of the first pushing member, a second pushing member fixed on the second pushing member shaft, a pushing rod, and a pushing member return spring; A second pusher arranging hole is disposed on the material rod, and an end of the second pusher member away from the second pusher shaft is inserted into the ejector arranging hole, and one end of the pusher return spring is connected to the pusher arranging piece. One end is connected to the body.

The multi-station die rotary upsetting machine according to any one of claims 1 to 3, wherein: the top material mechanism comprises a ejector pin having one end mounted in the concave die and corresponding to the concave die, The other end of the thimble performs a thimble limit abutting member for limiting the position; the workpiece ejecting mechanism is provided only at a position of the die where the workpiece is ejected, and the workpiece ejecting mechanism includes an ejector pin of the ejector pin; The position resisting member is fixed to the die holder or the body, and a vacant hole is provided at a position corresponding to the ejector rod on the thimble limit abutting member, and an outer diameter of the ejector rod toward one end of the escaping hole is smaller than an aperture of the escaping hole.

5 . The multi-station die rotary upsetting machine according to claim 4 , further comprising: a thimble limit abutting member adjusting mechanism for adjusting a distance between the thimble limit abutting member and the die holder; a guide post fixed to the die holder on a side of the die holder away from the die assembly, a sliding slot is disposed on the guide post corresponding to each of the pins, and a friction slider is mounted in the slot, Thimble away from concave One end of the mold base is in contact with the friction slider and is resisted by the limit position; the thimble limit resisting member is fixed to the body, and the surface of the friction slider contacting the thimble limit resisting member is larger than the aperture of the avoidance hole, the friction slider One end away from the thimble contacts the thimble limit abutting member and is resisted by the thimble limit abutting member.

6. The multi-station die rotary upsetting machine according to claim 5, wherein: the thimble limit abutting member adjusting mechanism comprises an adjusting column fixed to the thimble limiting abutting member, passing through the adjusting column An adjusting member and a second adjusting member, a first bolt and two first adjusting nuts, a compression spring mounted on the first bolt and disposed between the first adjusting member and the second adjusting member; the first being adjacent to the die holder The adjusting member is fixed to the body, the adjusting column is matched with the first adjusting member, and the second adjusting member away from the die holder is fixed to the adjusting column. One end of the first bolt is fixed on the first adjusting member, and the other end of the first bolt is worn. Passing through the second adjusting member and cooperating with the second adjusting member, the adjusting nut is mounted on the first bolt and placed on a side of the second adjusting member away from the first adjusting member.

7. The multi-station die rotary upsetting machine according to claim 5, wherein: the thimble limit abutting member adjusting mechanism comprises a second bolt and a limit sleeve which are only rotatable and non-axially movable; The body body is provided with a guiding hole for the thimble limit abutting member, and a rotation preventing mechanism for preventing the thimble limit abutting member from rotating relative to the body is arranged between the guiding hole and the thimble limiting abutting member, and the thimble restricting the gap between the resisting member and the guiding hole The end of the second bolt away from the die holder is a rotating clamping end, and the second bolt is provided with a limiting boss near the rotating clamping end, and the end of the second bolt near the die holder is a threaded end; the limiting sleeve is fixed to the body a stepped hole is formed in the limiting sleeve to cooperate with the second bolt and the limiting boss; the large hole of the stepped hole faces the side of the die holder; the threaded end of the second bolt passes through the thimble limit abutting member, the second The bolt is threadedly engaged with the thimble limit abutting member.

8. The multi-station die rotary upsetting machine according to claim 4, wherein: the thimble limit abutting member is fixed to the die; wherein each ejector casing has a return spring, the return spring is placed on the thimble and Between the die holders; the ejector limit resisting member is provided with the escaping hole corresponding to the position of each ejector pin, and the outer diameter of the thimble toward the end of the escaping hole is larger than the hole diameter of the escaping hole, and is rotated to each die At the discharge position, the workpiece ejection mechanism top pin, the ejector pin out the workpiece in the die.

9. A multi-station die rotary upsetting machine according to any one of claims 1 to 3, wherein: the die holder and the die have the same thickness, equal to the workpiece to be formed in the die. Length; the workpiece ejection mechanism is provided only at the position of the die where the workpiece is ejected, and the workpiece ejecting mechanism includes an ejector rod of the top ejector pin; the forming hole of the workpiece formed in the concave mold is limited by the workpiece fixed to the body The position resisting member is resisted, and the workpiece limiting member is provided with a escaping hole for the ejector rod.

10. A multi-station die rotary upsetting machine according to any one of claims 1 to 3, wherein: the die positioning device comprises a first swing drive shaft, a drive mechanism of the first swing drive shaft, a first swinging member fixed on the driving shaft of the first swinging member, a second swinging shaft fixed to the body, a second swinging member pivotally pivotally connected to the second swinging shaft, a positioning rod, and a positioning rod guide sleeve fixed to the body a second return spring; the positioning rod includes two small ends, and extends into the die holder toward the small end of the die holder, far The small end of the die holder passes through the guide sleeve and is provided with a mounting hole of the second swinging piece on the small end. The second return spring is installed between the guide sleeve and the positioning rod, and one end of the second swinging member extends into the guide sleeve. In the hole, the other end of the second pendulum can abut the first pendulum.

11. A multi-station die rotary upsetting machine according to any one of claims 1 to 3, wherein: the die indexing device comprises a first gear tooth disposed on a circumference of the die holder, a disc having a second transmission tooth engaged with the first transmission tooth, a disc drive mechanism for driving the disc to rotate; the circumference of the disc occupied by the second transmission tooth is a ratio of the circumference of the disc to the ratio of the concave mold.

12. The multi-station die rotary upsetting machine according to claim 11, wherein: a die holder is disposed outside the die holder, and a die holder is disposed at both ends of the die holder. a first end cover and a second end cover are defined in the die sleeve, the first end cover is adjacent to the die assembly, the first end cover is fixed on the die holder, and the second end cover is fixed on the die holder and is The limit is in the die holder; the hollow hole of the hollow disk is provided at the position corresponding to the disk of the die holder.

13. A multi-station die rotary upsetting machine according to any one of claims 1 to 3, characterized in that: a trimming material clamping mechanism, comprising a trimming rod, a shearing material for driving the reciprocating movement of the cutting rod a rod driving mechanism, a cutting knife fixed on the cutting rod, and a cutting mechanism for clamping the blank with the cutting knife, the clamping mechanism comprises a clamping knife, and the cutting knife and the clamping knife cooperate to form a clamping blank The accommodating portion is configured to open the clamping knives and the cutting knives and to position the clamping knives opening mechanism of the blanks at the set position; and further comprise: arranging the clamping knives relative to the cutting knives to form a holding blank a limit reset mechanism for the cutting mechanism that limits the movement of the cutter during the cutting of the blank; in the feeding position, the width of the receiving portion of the holding blank in the moving direction of the cutting blade is greater than the diameter of the blank; At the cutting position, the clamping knife is fixed relative to the cutting knife, and the receiving portion of the holding blank does not change.

14. A method of operating a multi-station die swing upsetting machine according to any one of claims 1 to 3, characterized in that the working method comprises: