CN211027689U

CN211027689U - Punching machine convenient to work piece location

Info

Publication number: CN211027689U
Application number: CN201921791963.2U
Authority: CN
Inventors: 李敏; 朱兵
Original assignee: Changzhou Xinheli Precision Machinery Co ltd
Current assignee: Changzhou Xinheli Precision Machinery Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-07-17
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a punching machine convenient to work piece location belongs to punching machine technical field, and its technical scheme main points are, including the support with be fixed in the punching machine body on the support, the punching machine body includes the workstation, the intermediate position of workstation is fixed with the lower mould, be provided with a plurality of stoppers on the workstation, every stopper all flushes with the lower mould, a plurality of stoppers set up respectively around the lower mould, concave groove has all been seted up to the corner department of workstation, the concave inslot is provided with the movable block, a plurality of stoppers insert respectively locate the concave groove and with correspond the movable block fixed connection in the spout, first cylinder is all connected to every movable block. The stability of the workpiece in the stamping process can be improved, and therefore the machining precision of the workpiece in the stamping process can be ensured. The utility model is suitable for a design of punching machine.

Description

Punching machine convenient to work piece location

Technical Field

The utility model belongs to the technical field of the punching machine technique and specifically relates to a punching machine convenient to work piece location is related to.

Background

At present, a punching machine drives a flywheel through a motor, and a transmission gear drives a crank link mechanism to enable a sliding block to move up and down through a clutch so as to drive a drawing die to form a steel plate. The double-acting means that the press is provided with two slide blocks which are an inner slide block and an outer slide block, the inner slide block drives a male die or a female die of the die, the outer slide block drives a blank holder on the die, the blank holder firstly acts to press the edge of a steel plate during drawing, and the inner slide block then acts to draw.

The above prior art solutions have the following drawbacks: when a punching machine punches a workpiece, the punching machine is prone to cause the phenomenon of low precision of a punched part due to poor stability of workpiece placement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a punching machine convenient to work piece location has the effect that improves the machining precision of punching press work piece.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the punching machine convenient for workpiece positioning comprises a support and a punching machine body fixed on the support, wherein the punching machine body comprises a workbench, a lower die is fixed at the middle position of the workbench, a plurality of limiting blocks are arranged on the workbench, each limiting block is flushed with the lower die, the limiting blocks are arranged around the lower die respectively, a concave groove is formed in the corner of the workbench, a moving block is arranged in the concave groove, the limiting blocks are inserted into the concave groove respectively and are fixedly connected with the moving block corresponding to the sliding groove, and each moving block is connected with a first air cylinder.

Through adopting above-mentioned technical scheme, at first place the work piece that needs the punching press on the lower mould, because the specification of placing the work piece on the cope match-plate pattern is not unique, therefore the work piece has unsettled place outside the lower mould easily, because set up the stopper, during the use, promotes the movable block through first cylinder. The movement of the limiting block is driven by the movement of the moving block, so that the workpiece can be effectively supported. The limiting block can support the workpiece suspended outside the lower die, so that the stability of the workpiece in stamping can be improved, and the machining precision of the workpiece in stamping can be ensured.

The utility model discloses further set up to, the stopper is followed the length direction in concave groove is seted up, every the stopper with correspond the position all be fixed with a plurality of supporting spring between the movable block.

Through adopting above-mentioned technical scheme, because the lower mould sets up according to the shape of the part that the work piece needs the punching press, make the specification of lower mould not only, consequently supporting spring's setting can be convenient for adjust from top to bottom of stopper to make the stopper can effectually play the effect of support to the work piece that needs the punching press.

The utility model discloses further set up to, be provided with in the concave groove with the adjacent first supporting block of movable block, every the stopper with be provided with first bracing piece between the first supporting block, the both ends of first bracing piece respectively with first supporting block with the tip of stopper is articulated.

Through adopting above-mentioned technical scheme, when supporting spring does not receive exogenic action, because supporting spring's resilience force can make the stopper be in supporting spring direction of height peak, surpasss the high range of lower mould easily, consequently sets up first bracing piece, can carry on spacingly to the position of stopper to can tend to same horizontal plane with stopper and lower mould on.

The utility model discloses further set up to, move in the spout with the adjacent second supporting shoe that is equipped with of movable block, the second supporting shoe is located the movable block is kept away from one side of first supporting shoe, every all be provided with the second bracing piece between stopper and the second supporting shoe, the both ends of second bracing piece respectively with the stopper is kept away from the tip of first bracing piece and the second supporting shoe is articulated, supporting spring is located first bracing piece with between the second bracing piece.

Through adopting above-mentioned technical scheme, set up second portion bracing piece and second supporting shoe and can play balanced effect to the stopper, make the surface of stopper be difficult to crooked at horizontal position to can effectually support the work piece, thereby can improve the stability of work piece.

The utility model discloses further set up to, first supporting shoe with between the movable block and the movable block with all be connected with first spacing spring between the second supporting shoe, first cylinder with first supporting shoe is connected.

Through adopting above-mentioned technical scheme, the setting of first limiting spring, can be in proper order with first supporting shoe, movable block and second supporting shoe are connected, on the one hand, when first supporting shoe of first cylinder control removed, can drive second supporting shoe and movable block through first limiting spring and remove, on the other hand, when the stopper need reciprocate, first bracing piece and second bracing piece can drive first supporting shoe and the motion of second supporting shoe towards opposite direction, because first limiting spring has elasticity, consequently be difficult to the phenomenon of producing the interference to the removal of first supporting shoe and second supporting shoe.

The utility model discloses further set up to, the stopper is close to the one end of cylinder extend have with the stopper is provided with the limiting plate perpendicularly, the stopper is kept away from the one side of limiting plate with be provided with the spacing spring of second between the concave groove terminal surface.

Through adopting above-mentioned technical scheme, the setting of limiting plate can be fixed a position and fix the work piece to can make the more stable fixing of work piece on the lower mould. The second limiting spring can form a relative force with the first cylinder, so that the limiting block can be effectively positioned.

The utility model discloses further set up to, a set of through-hole has been seted up on the workstation, a set of two the through-hole is close to set up in annular hole on the lateral wall of the one end of lower mould, annular hole with the through-hole forms the counter sink, the downthehole hoisting block of having placed of annular, the hoisting block is kept away from the one end of lower mould is connected with the second cylinder, the second cylinder is fixed in on the support.

Through adopting above-mentioned technical scheme, after the work piece punching press was ended, the telescopic link through the second cylinder extension promoted the promotion piece and risees to can break away from the work piece from the lower mould through promoting the piece, in order to play the effect of the work piece drawing of patterns of being convenient for.

The utility model discloses further set up to, the promotion piece is close to the one side of lower mould is provided with the rubber layer.

Through adopting above-mentioned technical scheme, the setting of rubber layer can play the effect of protection to the surface of work piece to can reduce the fish tail on work piece surface, with the precision of ensureing the work piece surface.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the limiting block, the concave groove, the moving block, the first air cylinder, the first supporting block and the first supporting rod, the effect of improving the machining precision of the workpiece during stamping by improving the placing stability of the workpiece can be achieved;

2. the second support block and the second support rod are arranged, so that the effect of reducing the deflection of the limit block and keeping the limit block horizontal can be achieved;

3. through the arrangement of the counter bore, the lifting block and the second air cylinder, the effect of facilitating demoulding of the workpiece can be achieved.

Drawings

Fig. 1 is a schematic view of the entire structure of a punch according to an embodiment.

FIG. 2 is a schematic diagram of a stage according to one embodiment.

Fig. 3 is a schematic view of the internal structure of a groove according to an embodiment.

FIG. 4 is a cross-sectional view of a platen according to one embodiment.

In the figure, 1, a bracket; 2. a punch body; 3. a work table; 31. a limiting block; 311. a limiting plate; 312. a second limit spring; 32. a concave groove; 321. a moving block; 322. a first cylinder; 323. a support spring; 324. a first support block; 325. a first support bar; 326. a second support block; 327. a second support bar; 328. a first limit spring; 33. a through hole; 331. an annular hole; 332. a countersunk hole; 333. a lifting block; 334. a second cylinder; 335. a rubber layer; 4. and (5) a lower die.

Detailed Description

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

Referring to fig. 1 to 3, the utility model discloses a punching machine convenient for workpiece positioning, which comprises a bracket 1 and a punching machine body 2 fixed on the bracket 1, wherein the punching machine body 2 comprises a workbench 3, a lower die 4 is fixed at the middle position of the workbench 3, the connection between the lower die 4 and the workbench 3 is detachable, on one hand, in order to ensure the processing precision of a punching workpiece, the same lower die 4 needs to be replaced regularly; on the other hand, since the shape of the lower die 4 is determined according to the shape of the workpiece to be punched, when the lower die 4 is replaced, the table 3 and the lower die 4 need to be detached. During work, a workpiece needing to be stamped is placed on the lower die 4, a plurality of limiting blocks 31 are arranged on the workbench 3 for improving the stability of the workpiece, and each limiting block 31 is flush with the lower die 4, so that the lower die 4 can be supported by the limiting blocks 31. In order to allow the workpiece to receive a uniform supporting force, a plurality of stoppers 31 are provided around the lower die 4, respectively. The corners of the workbench 3 are all provided with a concave groove 32, a moving block 321 is arranged in the concave groove 32, a plurality of limiting blocks 31 are respectively inserted in the concave groove 32 and fixedly connected with the moving block 321 in the corresponding sliding groove, and each moving block 321 is connected with a first cylinder 322. The first air cylinder 322 is started, the moving block 321 is controlled to slide in the concave groove 32 through the extension and retraction of the telescopic rod of the first air cylinder 322, and the moving block 321 moves to drive the limiting block 31 to move, so that the workpiece with different specifications can be effectively supported. Therefore, the stability of the workpiece can be improved, the stability of the workpiece in stamping can be improved, and the processing precision of the workpiece in stamping can be ensured.

Referring to fig. 3, because the lower die 4 is arranged according to the shape of the workpiece to be stamped, the specification of the lower die 4 is not unique, the limit blocks 31 are arranged along the length direction of the concave grooves 32, a plurality of support springs 323 are fixed between each limit block 31 and the moving block 321 at the corresponding position, and the support springs 323 can facilitate the up-and-down adjustment of the limit blocks 31, so that the limit blocks 31 can effectively support the workpiece to be stamped. A first supporting block 324 and a second supporting block 326 adjacent to the moving block 321 are arranged in the concave groove 32, the first supporting block 324 and the second supporting block 326 are both located at two sides of the moving block 321, each limiting block 31 is connected with a first supporting rod 325 and a second supporting rod 327 with the same specification between the first supporting block 324 and the second supporting block 326, two ends of the first supporting rod 325 are hinged with the end portions of the first supporting block 324 and the limiting block 31, two ends of the second supporting rod 327 are hinged with the end portion of the limiting block 31 far away from the first supporting rod 325 and the second supporting block 326, and the supporting spring 323 is located between the first supporting rod 325 and the second supporting rod 327. When supporting spring 323 does not receive the exogenic action, because supporting spring 323's resilience force can make stopper 31 be in supporting spring 323 direction of height peak, thereby exceed the high scope of lower mould 4 easily, consequently can carry on spacingly through first bracing piece 325 and second bracing piece 327 to stopper 31's position, thereby can tend to stopper 31 and lower mould 4 on the same horizontal plane, make stopper 31's surface be difficult to crooked at horizontal position, thereby can effectually support the work piece, thereby can improve the stability of work piece. In order to make sure the movement between the first and second support blocks 324 and 326, the limit length of the support spring 323 is smaller than the length of the first support rod 325 or the second support rod 327.

Referring to fig. 3, in order to improve the linkage among the first supporting block 324, the moving block 321, and the second supporting block 326, first limiting springs 328 are connected between the first supporting block 324 and the moving block 321 and between the moving block 321 and the second supporting block 326, and the first cylinder 322 is connected to the first supporting block 324. When the stopper 31 needs to move up and down, the first support rod 325 and the second support rod 327 can drive the first support block 324 and the second support block 326 to move in opposite directions, and the first stopper spring 328 has elasticity, so that the phenomenon of interference on the movement of the first support block 324 and the second support block 326 is not easy to generate.

Referring to fig. 4, in order to facilitate positioning and fixing of the workpiece, a limiting plate 311 is extended from one end of the limiting block 31 close to the first cylinder 322 and perpendicular to the limiting block 31, and a second limiting spring 312 is disposed between one surface of the limiting block 31 far away from the limiting plate 311 and the end surface of the concave groove 32. The second position-limiting spring 312 can generate a relative force with the first cylinder 322, so as to effectively position the position-limiting block 31. In order to facilitate demolding of a workpiece, a group of through holes 33 are formed in the workbench 3, a ring-shaped hole 331 is formed in the side wall of one end, close to the lower die 4, of each group of two through holes 33, a countersunk hole 332 is formed between the ring-shaped hole 331 and the through hole 33, a lifting block 333 is placed in the ring-shaped hole 331, a second air cylinder 334 is connected to one end, far away from the lower die 4, of the lifting block 333, the second air cylinder 334 is fixed on the support 1, and after the workpiece is punched, the lifting block 333 is pushed to rise through the extension of an expansion rod of the second air cylinder 334, so that the workpiece can be separated from the lower die 4. In order to protect the surface of the workpiece and reduce scratches on the surface of the workpiece to ensure the accuracy of the surface of the workpiece, a rubber layer 335 is provided on the surface of the lifting block 333 adjacent to the lower die 4.

The implementation principle of the above embodiment is as follows: the punched workpiece is placed on the lower die 4, the first supporting block 324 is pushed by the telescopic rod of the first cylinder 322, and the first supporting block 324, the moving block 321 and the second supporting block 326 are linked, so that when the first supporting block 324 moves in the concave groove 32, the moving block 321 and the second supporting block 326 can be driven to move. The height of the stopper 31 is controlled according to the height of the lower die 4, that is, when the first supporting block 324 and the second supporting block 326 relatively move, the stopper 31 rises, and when the first supporting block 324 and the second supporting block 326 reversely move, the stopper 31 falls, so that the workpiece can be supported. After the workpiece is punched, the telescopic rod of the second cylinder 334 extends to push the lifting block 333 to rise, so that the workpiece can be separated from the lower die 4 through the lifting block 333, and the workpiece can be conveniently demoulded.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a punching machine convenient to work piece location, includes support (1) and is fixed in punching machine body (2) on support (1), its characterized in that: the punching machine body (2) comprises a workbench (3), a lower die (4) is fixed at the middle position of the workbench (3), a plurality of limiting blocks (31) are arranged on the workbench (3), each limiting block (31) is flush with the lower die (4), the limiting blocks (31) are arranged on the periphery of the lower die (4) respectively, a concave groove (32) is formed in the corner of the workbench (3), a moving block (321) is arranged in the concave groove (32), the limiting blocks (31) are inserted into the concave groove (32) respectively and are fixedly connected with the moving block (321) corresponding to the concave groove (32), and each moving block (321) is connected with a first air cylinder (322).

2. A press for facilitating positioning of a workpiece according to claim 1, wherein: the limiting blocks (31) are arranged along the length direction of the concave grooves (32), and a plurality of supporting springs (323) are fixed between each limiting block (31) and the corresponding moving block (321).

3. A press for facilitating positioning of a workpiece according to claim 2, wherein: first supporting blocks (324) adjacent to the moving block (321) are arranged in the concave groove (32), a first supporting rod (325) is arranged between each limiting block (31) and the first supporting block (324), and two ends of the first supporting rod (325) are hinged to two side faces of the first supporting block (324) and the limiting block (31) respectively.

4. A press for facilitating positioning of a workpiece according to claim 3, wherein: a second supporting block (326) is arranged in the concave groove (32) and adjacent to the moving block (321), the second supporting block (326) is located on one side, away from the first supporting block (324), of the moving block (321), a second supporting rod (327) is arranged between each limiting block (31) and the second supporting block (326), two ends of each second supporting rod (327) are hinged to the side face, away from the first supporting rod (325), of each limiting block (31) and the corresponding second supporting block (326), and the supporting spring (323) is located between the first supporting rod (325) and the corresponding second supporting rod (327).

5. A press for facilitating positioning of a workpiece according to claim 4, wherein: first limiting springs (328) are connected between the first supporting block (324) and the moving block (321) and between the moving block (321) and the second supporting block (326), and the first cylinder (322) is connected with the first supporting block (324).

6. A press for facilitating positioning of a workpiece according to claim 1, wherein: stopper (31) are close to the one end of first cylinder (322) extend have with stopper (31) are provided with limiting plate (311) perpendicularly, stopper (31) are kept away from the one side of limiting plate (311) with be provided with second spacing spring (312) between the tip lateral wall of concave groove (32).

7. A press for facilitating positioning of a workpiece according to claim 1, wherein: seted up a set of through-hole (33) on workstation (3), a set of two through-hole (33) are close to set up in annular hole (331) on the lateral wall of the one end of lower mould (4), annular hole (331) with through-hole (33) form counter bore (332), promote piece (333) have been placed in annular hole (331), promote piece (333) and keep away from the one end of lower mould (4) is connected with second cylinder (334), second cylinder (334) are fixed in on support (1).

8. A press for facilitating positioning of a workpiece according to claim 7, wherein: and a rubber layer (335) is arranged on one surface of the lifting block (333) close to the lower die (4).