JPH0549129U - Turret punch press - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a turret punch press capable of performing appropriate downward forming processing on a plate material and suppressing damage to the plate material due to movement positioning as much as possible. [Structure] A lower turret 23 is provided so as to be able to move up and down below the height position of a pass line P, and a die pushing device 53 for pushing up a lower die indexed to a processing region to a predetermined height position is provided. , An elevating table 79 for supporting a plate member is provided between the upper turret 21 and the lower turret 23,
It is characterized in that the elevating table is vertically movable between a height position of the pass line and a predetermined height position lower than the height position of the pass line.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a turret punch press capable of punching and upward forming or downward forming.

[0002]

[Prior Art]

 Explaining the turret punch press, a table is provided on the frame for supporting the plate material at the height position of the pass line, and an upper turret and a lower turret are provided on the rear side of the table so as to face each other. The upper turret is provided with a plurality of upper die parts for punching and a plurality of upper die parts for upward molding, and the lower turret has a plurality of lower die parts for punching and a plurality of lower die parts for upward molding. It is provided. Here, the lower mold for upward molding protrudes with respect to the height position of the pass line. Incidentally, also in the lower turret, the plate material is supported at the height position of the pass line similarly to the table.

Further, above the upper turret, a striker for pressing the upper die for punching or the upper die for upward molding located in the working region is provided so as to be vertically movable. It should be noted that the processing region here means a region located vertically below the striker.

Therefore, the plate material is positioned at a predetermined position between the upper turret and the lower turret, and the upper turret and the lower turret are synchronously rotated by a predetermined angle in the same direction, and the predetermined upper die for punching, Position the lower mold (or upper mold for upward molding, lower mold) in the processing area. Then, by lowering the striker and pressing a predetermined upper die for punching (or upper die for upward forming), desired punching (or upward forming) is performed on the plate material. ..

[0005]

[Problems to be solved by the device]

 However, in the conventional turret punch press as described above, the table and the lower turret are located at the height position of the pass line and cannot support the plate material formed downward. Therefore, in the conventional turret punch press, downward forming processing cannot be performed.

Further, since the upward molding die attached to the lower turret projects above the height position of the pass line, the plate material cannot be kept in a horizontal state, and the plate material is moved and positioned. At times, there were problems such as scratches on the plate and unevenness on the plate.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned conventional problems, the present invention has an upper turret provided with a plurality of detachable and ascendable upper molds, and a plurality of detachable and ascendable lower molds. The lower turrets are provided on the frame so as to face each other vertically, and the lower turrets are provided so as to be able to move up and down below the height of the pass line. And the lower turret are rotatably positionable, and a die lifting device for pushing the lower die indexed to the machining area to a predetermined height position is provided, and the upper die indexed to the machining area. A striker for pressing the die is provided, and an elevating table for supporting the plate material is provided between the upper turret and the lower turret, and the height position of the pass line and the height of the pass line are set. The lift table is provided to be movable up and down between a predetermined height position lower than the position, and an intrusion part into which the striker can enter is provided in a portion of the lift table located in the processing area. ..

[0008]

[Action]

 In the above structure, first, a large number of upper molds are attached to the upper turret, and a large number of lower molds are attached to the lower turret.

When performing punching or upward molding, the elevating table is elevated to the height position of the pass line. Then, the upper turret and the lower turret are rotated to index the predetermined upper die and lower die to the working area, and the plate material is positioned in the working area. Further, after indexing the predetermined upper mold and the lower mold into the processing area, the predetermined lower mold is pushed up by appropriately operating the mold lifting device to push up the predetermined lower mold. Intrudes and rises to a predetermined height position. Here, the predetermined height position means the height position of the pass line for the lower die for punching, and the predetermined height higher than the height position of the pass line for the upper die for upward molding. Say the position. Further, by appropriately raising the lower turret in advance before indexing the die, it is possible to reduce the amount of pushing up the predetermined lower die by the die pushing device.

After pushing up a predetermined lower mold to a predetermined height position, by pressing a predetermined upper mold with a striker, a predetermined upper mold and a lower mold cooperate with each other to a plate material. The desired punching or upward forming process can be performed.

Next, the case where the downward forming process is performed on the plate material will be described.

After lowering the lower turret from the normal position, the upper turret and the lower turret are rotated to index a predetermined downward forming upper die and lower die into the processing area, and at the same time, plate material is formed. To the machining area. After indexing the specified downward molding upper mold and lower mold into the processing area, operate the mold lifting device appropriately to push up the specified downward molding lower mold to the specified height position. Position it. Here, the predetermined height position means a height position which is substantially the same as the height position of the pass line or a predetermined height position which is lower than the height position of the pass line.

Then, by pressing a predetermined downward forming lower die with a striker, a desired downward forming process can be performed on the plate material.

After performing the downward forming process on the plate material, the elevating table is lowered in correspondence with the downward forming amount. Further, when the downward forming process is performed on the plate material, the forming unit is supported by the lifting table.

[0015]

【Example】

 An embodiment according to the present invention will be described below with reference to the drawings.

Referring to FIGS. 6 and 5, the turret punch press 1 is based on a bridge type frame including an upper frame 3 and a lower frame 5 which are vertically opposed to each other. A fixed table 7 for supporting the plate material W is provided on the upper surface of the lower frame 5, and movable tables 9 are provided on both left and right sides (upper and lower sides in FIG. 5) of the fixed table 7. A large number of free bearings for supporting the plate material W at the height position of the pass line are provided on the upper surfaces of the fixed table 7 and the movable table 9. The movable table 9 is movable in the front-rear direction (left and right in FIG. 5) via rails 11 provided on the lower frame 5.

A moving positioning device 13 is provided for moving and positioning the plate material W for punching. More specifically, a carriage base 15 forming a part of the movement positioning device 13 is integrally provided on the front side of the movable table 9, and the carriage base 15 is provided with a clamp device 17 for holding the plate material W. A carriage 19 is provided so as to be movable in the left and right directions.

A turret device 25 having an upper turret 21 and a lower turret 23 is provided on the rear side of the fixed table 7. For details of the turret device 25, referring to FIG. 1, the upper frame 3 is provided with a rotary shaft 27 integrally provided on the upper turret 21 so as to be rotatable via a chain 29, and the lower frame 5 is provided with the rotary shaft 27. A rotary shaft 31 provided integrally with the lower turret 23 is rotatably provided via a chain 33. The chains 29 and 33 are linked to a turret servomotor (not shown) through appropriate means so that the upper turret 21 and the lower turret 23 are synchronously rotated by a predetermined angle in the same direction. Can be done.

Referring again to FIGS. 5 and 6, the upper and lower turrets 21 and 23 are provided with a plurality (three in this embodiment) of die changing stations 35, and the plurality of die changing stations are exchanged. The station 35 is provided with a plurality of pairs of upper and lower molds 37 and lower molds 39 which can be freely moved up and down via a plurality of pairs of mold holders 41 and 43. Further, an upper mold 39 and a lower mold 41 are detachably and vertically movable at a plurality of mold stations other than the mold exchanging station 35 in the upper turret 21 and the lower turret 23, respectively.

A plurality of pairs of mold holders 41, 43 having the molds 37, 39 are stored in a mold storage device 44 provided at the rear part of the lower frame 5 as shown in FIG. Further, the lower frame 5 is provided with a mold exchanging device 45 movable in the front-rear direction, and the molds 37, 39 of the mold exchanging station 35 indexed to the mold exchanging position and the above-mentioned molds. It has a function of exchanging the predetermined molds 37 and 39 stored in the storage device 43.

A hydraulic cylinder 47 is provided above the upper turret 21 in the upper frame 3 as shown in FIG. 1, and a piston rod 49 that is expandable and contractable downward from the hydraulic cylinder 47 is provided with a machining cylinder. A striker 51 for pressing the upper die 37 located in the area is provided. Here, the processing area means an area located at a vertically lower position of the striker 51.

Further, at a position below the lower turret 23 in the lower frame 5, a mold pushing device for raising the lower mold 39 provided on the lower turret 23 so as to be able to move up and down to a predetermined height position. 53 is provided (see FIG. 1, details will be described later).

With the above configuration, first, the plate material W is supported on the movable table 9 and the fixed table 7, and the plate material W is gripped by the clamp device 17, and then the carriage 19 is moved in the left-right direction on the carriage base 15. The carriage base 15 is moved together with the movable table 9 in the front-back direction. As a result, the plate material W can be positioned in the processing area. Further, the upper turret 21 and the lower turret 23 are appropriately rotated to index the desired upper die 37 and lower die 39 to the processing region. After indexing the predetermined upper mold 37 and the lower mold 39 into the processing area, the mold pushing device operates to push the predetermined lower mold 39 up to a predetermined height position. Then, by extending the piston rod 49 of the hydraulic cylinder 47 and lowering the striker 51, the predetermined upper mold 37 is pressed, and the lower mold 39 of the predetermined upper mold 37 cooperates to form the plate W. Punching is performed.

The lower turret 23 is provided so as to be vertically movable below the height position of the pass line.

More specifically, referring to FIG. 1, a supporting frame 55 forming a part of the lower frame 5 is provided with a box-shaped lifting body 57 movably up and down via a guide member 55a. An elevating rod 59 that rotatably supports the rotating shaft 31 of the lower turret 23 via a bearing 58 is integrally attached to the elevating body 57. In order to move the lifting / lowering body 57 up and down, a hydraulic cylinder 63 is provided on a support bracket 61 provided on the lower side of the support frame 55, and a piston rod 65 which extends and contracts upward from the hydraulic cylinder 63 is lifted and lowered. It is connected to the body 57.

A first stopper 67 is provided on the lower surface of the support frame 55 so as to be able to come into contact with the contact surface 57 a of the lifting body 57, and the upper surface of the support frame 55 is brought into contact with the lower end of the lifting rod 59. A possible second stopper 69 is provided. The first stopper 67 and the second stopper 69 regulate the upper limit and the lower limit of the height position of the lower turret 23, respectively.

A sprocket 71 around which the chain 33 is wound is provided on the outer circumference of the rotary shaft 31, and the sprocket 71 supports the sprocket 71 with a restricting member 73 integrally provided on the support frame 55. The sprocket 71 supports the rotating shaft 31 so as to be able to move up and down through the key groove 31a or the spline while being prevented from moving up and down with respect to the frame 55.

On the other hand, a fixed rod 75 is integrally hung on the upper frame 3, and the rotary shaft 27 is rotatably supported by the fixed rod 75 via a bearing 76.

Between the upper turret 21 and the lower turret 23, an elevating table 77 that supports the plate material W is provided. The elevating table 77 uses an elevating cylinder 79 to set the height position of the path line P and the path line P. It is provided so as to be able to move up and down between a predetermined height position lower than the height position. In addition, an intrusion portion 77a is provided in the processing area of the elevating table 77 so that the lower die 39 can enter.

The mold lifting device 53 for lifting the predetermined lower mold 39 located in the processing region to a predetermined height position will be described in detail. The mold lifting device 53 includes the lower part of the lower frame 5. The hydraulic cylinder device is provided below the turret 23, and the piston rod 81 of the hydraulic cylinder device 53 pushes up a predetermined lower die 39 from below. Further, the piston rod 81 is provided with a hollow hole 81h.

Now, referring to FIGS. 2 and 3, as the upper mold 37, a proper number of types (three types in this embodiment) are used. That is, there are a downward molding upper die 83 that performs downward molding, an upward molding upper die 85 that performs upward molding, and a punching upper die 87 that performs punching. Similarly, as the lower die 39, an appropriate number of types (three types in this embodiment) are used. That is, there are a downward forming lower die 89, an upward forming lower die 91 and a punching lower die 93.

An example of the downward molding upper mold 83 will be described with reference to FIG. 2. A sleeve 95 is vertically slidable in an upper mold mounting hole provided in the mold holder 41 (or the upper turret 21). The sleeve 95 can be biased upward by a spring 97. A punch body 99 is vertically slidably provided in the inner hole of the sleeve 95, and the punch body 99 can be biased upward by a spring 101. At the lower end of the punch body 99, a punch chip 103 for performing downward forming processing is provided.

Explaining the downward molding lower mold 89, the lower mold mounting hole provided in the mold holder 43 (or the lower turret 23) is provided with a die holder 105 which is vertically slidable. The die holder 105 can be biased downward by a spring 107. A die chip 109 for performing downward forming processing from below is provided at the upper end of the die holder 105. Note that FIG. 2 shows the state of the downward molding upper mold 83 and the downward molding lower mold 89 immediately after the downward molding process.

Next, the upper molding upper die 85 and the upper molding lower die 91 will be described with reference to FIGS. 3 and 4. The upper mold 85 for upward molding will be described. The upper mold mounting hole provided in the mold holder 41 (or the upper turret 21) is provided with a vertically slidable sleeve 111, which is a spring 111. It can be biased upward by 113. A punch body 115 is vertically slidable in the inner hole of the sleeve 111, and the punch body 115 can be biased upward by a spring 117. At the lower end of the punch body 115, a punch tip 119 for performing upward forming processing is provided.

Explaining the upward molding lower mold 91, the lower mold mounting hole provided in the mold holder 43 (or the lower turret 23) is provided with a die holder 121 which is vertically slidable. The die holder 121 can be biased downward by a spring 123. Further, a die chip 125 for performing an upward forming process is provided on the upper end of the die holder 121. FIG. 4 shows the state of the upward molding die 85 and the upward molding die 91 immediately after the upward molding process.

Next, the upper die 87 for punching and the lower die 93 for punching will be described with reference to FIGS. 3 and 4. The upper die 87 for punching will be described. The upper die mounting hole provided in the die holder 41 (or the upper turret 21) is provided with a sleeve 127 slidably up and down, and the sleeve 127 includes a spring 129. Can be urged upward by. A punch body 131 is vertically slidably provided in the inner hole of the sleeve 127, and the punch body 131 can be biased upward by a spring 133. A punch tip 135 for punching is provided at the lower end of the punch body 131.

The lower die 93 for punching will be described. A die holder 137 is provided slidably in the lower die mounting hole provided in the die holder 43 (or the lower turret 23). The die holder 137 can be biased downward by a spring 139. A die 141 for punching is provided at the upper end of the die holder 137.

The operation of this embodiment will be described in detail based on the above-mentioned configuration. As for the order of processing, the plate material W is subjected to punching processing and upward forming processing, and then downward forming processing, and the downward forming processing is performed in order from the rear side to the front side of the plate material W.

First, the punching process will be described with reference to FIGS. 3 and 1. As a preparation before processing, the lifting cylinder 79 is operated to raise the lifting table 77 to the height position of the pass line P, and the hydraulic cylinder 63 is operated to raise the lower turret 23 to a predetermined upper height position. I will let you.

Here, in order to raise the lower turret 23, the hydraulic cylinder 63 is operated to raise the elevating rod 59. When the contact surface 57a of the lifting / lowering body 57 contacts the first stopper 67, the lower turret 23 stops at the upper limit position below the height position of the pass line. At this time, since the sprocket 71 is supported so as to be able to move up and down with respect to the rotating shaft 31, the height position of the chain 33 can be kept constant even if the rotating shaft 31 rises.

After the lower turret 23 is raised to a predetermined upper limit height position, the upper turret 21 and the lower turret 23 are synchronously rotated in the same direction by a predetermined angle to obtain a predetermined upper die 87 for punching and punching. The lower die 93 for use is indexed to the processing area. Further, the moving position determining device 13 is appropriately operated to position the plate material W at a predetermined position between the upper turret 21 and the lower turret 23.

After the predetermined upper die 87 and lower die 93 for punching are indexed in the processing area, the hydraulic cylinder 53 is operated to raise the piston rod 81, thereby resisting the urging force of the spring 139. The die holder 137 and the die chip 141 are raised to a predetermined height position higher than the height position of the pass line. Then, the hydraulic cylinder 47 is operated to lower the striker 51 to press the punch body 131, whereby the plate material W can be punched in a predetermined manner.

The chips generated by the punching process fall through the hollow holes provided in the die holder 137 and the hollow holes 81h provided in the piston rod 81.

Next, in the case of performing the upward forming process, the height positions of the lifting table 77 and the lower turret 23 are almost the same as those in the punching process, and the upward forming upper mold 85 and the upward forming mold The operation of the lower die 91 is almost the same. That is, the predetermined upward forming upper mold 85 and the lower forming mold 91 are indexed into the processing area, and the predetermined upper forming lower mold 91 is moved higher than the pass line height position by the operation of the hydraulic cylinder 53. After pushing up to a predetermined height position (a height position corresponding to the upward molding amount), a predetermined upper molding upper die 85 is pressed by the striker 51 (see FIG. 3).

Next, referring to FIGS. 1 and 2, when performing downward forming on the plate material W, the hydraulic cylinder 63 is operated to lower the elevating rod 59 to lower the elevating rod 59. The lower turret 23 can be lowered integrally with the elevating rod 59 to the lower limit height position where the head contacts the second stopper 69.

Next, the upper turret 21 and the lower turret 23 are appropriately rotated to index the predetermined downward forming upper mold 83 and the downward forming mold lower mold 89 into the processing area, and the moving positioning device 13 Is operated to position the plate material W at a predetermined position between the upper turret 21 and the lower turret 23. After the predetermined upper mold 83 for molding and the lower mold 89 are indexed, the hydraulic cylinder 53 is operated to move the predetermined lower mold 89 for downward molding to substantially the same height as the height position of the pass line P. Lift to a position (or a predetermined height position lower than the height position of the pass line P). Then, the hydraulic cylinder 47 is operated to lower the striker 51 and strike the upper end of the punch body 99 to lower the punch tip 103 and the sleeve 95. As a result, as shown in FIG. 2, the punch chip 103 and the die chip 109 cooperate with each other to perform the downward forming process on the plate material W.

When the downward forming process is completed, the striker 51 is raised by the operation of the hydraulic cylinder 47, and the state shown in FIG. 1 is restored. Further, the lifting cylinder 79 is actuated to lower the lifting table 77 to a predetermined height position (a height position corresponding to the downward forming amount) lower than the height position of the pass line. It should be noted that the lifting table 77 may be previously positioned at a predetermined height position corresponding to the downward molding amount.

Then, the moving positioning device 13 is appropriately operated to move the plate material W in the backward direction, and the plate material W is carried out from the lifting table 77 side. At this time, since the lifting table 77 is located at a predetermined height position corresponding to the downward forming amount and supports the downward forming portion, the downward forming portion is not deformed.

Further, when a plurality of downward forming processes are performed on one plate material W, it is sequentially performed from the rear side to the front side of the plate material W.

The present invention is not limited to the above description of the embodiments, but can be implemented in various other modes.

[0051]

[Effect of the device]

 As can be understood from the above description of the embodiments, according to the present invention, when performing downward forming, the lifting table provided between the upper turret and the lower turret can be lifted and lowered. With this, it is possible to support the downward molding portion, and it is possible to perform appropriate downward molding processing without deforming the molding portion.

Further, since the lower turret is provided below the height position of the pass line and the lower die is provided so as to be able to move up and down, the lower die for upward forming and the sheet material can be moved and positioned at the time of moving and positioning the sheet material. It is possible to prevent the plate material from being scratched or having irregularities due to interference with the other.

By making the lower turret movable up and down, the amount of pushing up the predetermined lower mold to the predetermined height position by the mold lifting device is reduced, the machining tact is shortened, and the work efficiency is improved. This is an effect of improvement.

[Brief description of drawings]

FIG. 1 is an explanatory side sectional view showing a main part of this embodiment before a downward forming process.

FIG. 2 is a cross-sectional explanatory view showing a state of a main part immediately after downward molding.

FIG. 3 is an explanatory cross-sectional view of a main part showing a state before punching and upward forming.

FIG. 4 is an explanatory cross-sectional view of a main part showing a state immediately after the upward forming process.

FIG. 5 is a schematic plan view of a turret punch press.

FIG. 6 is a perspective view showing an outline of a turret punch press.

[Explanation of symbols]

 1 Turret punch press 3 Upper frame 5 Lower frame 21 Upper turret 23 Lower turret 83,85,87 Upper mold 53 Mold lifting device 89,91,93 Lower mold 51 Striker 79 Lifting table 79a Entry part

Claims (1)

[Scope of utility model registration request] 1. An upper turret provided with a plurality of detachable and vertically movable upper molds, and a lower turret provided with a plurality of removable and vertically movable lower molds are provided on a frame so as to face each other. A lower turret is provided so as to be able to move up and down below the height of the pass line, and the upper turret and the lower turret are rotatably positioned to index any of the upper die and lower die into the processing area. A die pushing device for pushing up the lower die indexed to the area to a predetermined height position is provided, and a striker for pressing the upper die indexed to the processing area is provided, and the upper turret and the An elevating table supporting a plate member is provided between the lower turret and the elevating table between the height position of the pass line and a predetermined height position lower than the height position of the pass line. A turret punch press, wherein a bull is provided so as to be able to move up and down, and an intrusion portion into which the striker can invade is provided in a portion located in a processing area of the elevation table.