Auxiliary clamp for a punch press

Abstract

This utility model discloses an auxiliary fixture for stamping dies, belonging to the field of die fixture technology. It includes a stamping and bending body, a hydraulic cylinder mounted on the top of the body, and an upper pressure knife connected to the cylinder's push rod. An installation groove is provided inside the body. It also includes a bending die, which is installed in the installation groove, and a clamping device is provided within the groove. In this utility model, the upper pressure knife presses against the bending die, causing it to move slightly downwards. This causes the bending die to move its base block downwards, which in turn moves the base block through side grooves on both sides, causing a connecting rod to move. The top of the connecting rod then moves a transmission block downwards, pressing against the transmission groove, causing the clamping blocks to move outwards. This results in both clamping blocks clamping and fixing the bending die on both sides, preventing displacement of the bending die during stamping by the upper pressure knife and thus improving the stability of the bending die.

Description

Technical Field

[0001] This utility model belongs to the field of mold fixture technology, and in particular relates to an auxiliary fixture for stamping molds. Background Technology

[0002] Stamping dies are specialized process equipment used in the industrial field to achieve material separation or plastic forming. They apply pressure to metal or non-metal materials through a press, causing them to separate or deform in order to manufacture parts.

[0003] Chinese utility model application No. 202222490203.6 discloses a stamping and bending die and a stamping and bending equipment. The stamping and bending die is used to bend parts and includes: a lower die assembly; an upper die assembly located above the lower die assembly and configured to cooperate with the lower die assembly to bend the parts to form a bent portion with a base and a relative base bend on the parts. The upper die assembly includes a fixed base and a first limiting member connected to the fixed base. The first limiting member has a first limiting groove for accommodating the end of the bent portion away from the base to guide the movement of the bent portion. However, in actual use, since the lower die is placed on the bending machine during use, the die will undergo slight back-and-forth displacement during stamping, which will affect the stamping and bending accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary fixture for stamping dies to solve the problem of reduced stamping and bending accuracy caused by the back-and-forth movement of the die during stamping.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary fixture for a stamping die, comprising a stamping and bending body, wherein a hydraulic cylinder is mounted on the top of the stamping and bending body, and an upper pressing knife is connected to the hydraulic cylinder push rod; an installation groove is provided inside the stamping and bending body; and a bending die is also included, wherein the bending die is installed in the installation groove.

[0006] The mounting groove is equipped with a clamping device, which includes a bottom groove and two clamping grooves. The bottom groove is located at the bottom of the mounting groove, and the clamping grooves are located on the inner wall of the mounting groove. Multiple travel grooves are provided between the bottom groove and the clamping grooves. A bottom block is slidably connected in the bottom groove. Clamping blocks are provided on both sides of the bottom block, so that the bottom block moves downward under force, causing the clamping blocks to move outward to clamp and fix the bending mold.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the clamping block is attached to and slidably connected to the inner wall of the clamping groove, and multiple movable grooves are provided at the bottom of the clamping block. Transmission grooves are provided on both sides of the inner wall of the movable grooves, and transmission blocks are slidably connected in the transmission grooves. A connecting rod is provided between the two transmission blocks.

[0009] As a further description of the above technical solution:

[0010] Multiple side grooves are provided on both sides of the bottom block, and the bottom of the connecting rod extends into the side groove through the stroke groove, and both sides of the connecting rod are connected to the inner wall of the side groove respectively.

[0011] As a further description of the above technical solution:

[0012] The bottom of the bottom groove has multiple sliding grooves, and a movable cylinder is slidably connected in the sliding groove. The top of the movable cylinder is connected to the bottom of the bottom block. A fixed rod is slidably connected to the inner wall of the movable cylinder. The bottom of the fixed rod is connected to the bottom of the sliding groove, and a spring is sleeved on the outer wall of the fixed rod. The two ends of the spring are respectively connected to the bottom of the movable cylinder and the bottom of the sliding groove.

[0013] As a further description of the above technical solution:

[0014] The stamping and bending body is equipped with a deflection adjustment device. The deflection adjustment device includes a support bar. The bottom of the support bar is connected to the inside of the stamping and bending body, and the support bar is located on one side of the bending die. Multiple placement slots are opened on one side of the support bar. A base plate is slidably connected in the placement slot. A fixing block is attached to the top of the base plate. A wedge block is connected to one side of the fixing block. A fixing bolt is provided between the fixing block and the base plate.

[0015] As a further description of the above technical solution:

[0016] The bottom of the placement slot is provided with an adjustment slot, and a threaded seat is slidably connected in the adjustment slot. An adjustment bolt is threadedly connected in the threaded seat. One side of the adjustment bolt is rotatably connected to one side of the inner wall of the adjustment slot, and the other side of the adjustment bolt extends out of the adjustment slot. The top of the threaded seat is connected to the bottom of the base plate.

[0017] As a further description of the above technical solution:

[0018] Two movable slots are provided at the bottom of the placement slot. A movable block is slidably connected in the movable slot. The top of the movable block is connected to the bottom of the base plate. A sliding sleeve is embedded in the movable block, and a support rod is slidably connected in the sliding sleeve. The two ends of the support rod are respectively connected to the two sides of the inner wall of the movable slot.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. In this utility model, by setting up a clamping device, the bending die is pressed by the upper pressure knife, causing the bending die to move slightly downward. This causes the bending die to move the bottom block downward, and the bottom block moves the connecting rod through the side grooves on both sides. The top of the connecting rod moves the transmission block, causing the transmission block to move downward. By pressing the transmission groove, the clamping block moves outward, thus clamping and fixing both sides of the bending die, preventing the bending die from displacement when the upper pressure knife is pressing, thereby improving the stability of the bending die.

[0021] 2. In this utility model, by setting a deflection adjustment device, the bending die moves downward due to the force applied by the upper pressure knife, so that one side of the bending die contacts the side of the wedge block, thereby causing the inclined block to block and abut against one side of the bending die, thus adjusting the deflection of the bending die during stamping and bending, and preventing the bending die from breaking due to excessive deflection. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an auxiliary fixture for a stamping die proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the deflection adjustment device for an auxiliary fixture for a stamping die proposed in this utility model;

[0024] Figure 3 This utility model proposes an auxiliary fixture for stamping dies. Figure 2 Enlarged structural diagram of section A;

[0025] Figure 4 This is a schematic diagram of the clamping device structure of an auxiliary fixture for stamping dies proposed in this utility model;

[0026] Figure 5 This utility model proposes an auxiliary fixture for stamping dies. Figure 4 Enlarged structural diagram of section B;

[0027] Figure 6 This utility model proposes an auxiliary fixture for stamping dies. Figure 4 Enlarged structural diagram of section C.

[0028] Legend: 1. Stamping and bending body; 2. Mounting groove; 3. Bending die; 4. Deflection adjustment device; 401. Fixing block; 402. Fixing bolt; 403. Wedge block; 404. Base plate; 405. Placement groove; 406. Moving groove; 407. Moving block; 408. Support rod; 409. Threaded seat; 410. Adjusting bolt; 411. Adjusting groove; 412. Support bar; 5. Clamping device; 501. Clamping block; 502. Moving groove; 503. Transmission groove; 504. Connecting rod; 505. Side groove; 506. Bottom block; 507. Moving cylinder; 508. Fixing rod; 509. Spring; 510. Clamping groove; 511. Stroke groove; 512. Bottom groove; 513. Sliding groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6This utility model provides a technical solution: an auxiliary fixture for a stamping die, including a stamping and bending body 1, a hydraulic cylinder mounted on the top of the stamping and bending body 1, and an upper pressing knife connected to the hydraulic cylinder's push rod. The stamping and bending body 1 has an installation groove 2. It also includes a bending die 3, which is installed in the installation groove 2. A clamping device 5 is provided in the installation groove 2. The clamping device 5 includes a bottom groove 512 and two clamping grooves 510. The bottom groove 512 is located at the bottom of the installation groove 2, and the clamping grooves 510 are located on the inner wall of the installation groove 2. Multiple stroke grooves 511 are provided between the bottom groove 512 and the clamping grooves 510. A bottom block 506 is slidably connected in the bottom groove 512. Clamping blocks 501 are driven on both sides of the bottom block 506, causing the bottom block 506 to move downwards under force, driving the clamping blocks 501 to move outwards to clamp and fix the bending die 3. The outer wall of the clamping block 501 is in contact with and slides against the inner wall of the clamping groove 510. The bottom of the clamping block 501 has multiple movable grooves 502. Both sides of the inner wall of the movable groove 502 have transmission grooves 503. Transmission blocks are slidably connected in the transmission grooves 503. A connecting rod 504 is provided between two transmission blocks. Both sides of the bottom block 506 have multiple side grooves 505. The bottom of the connecting rod 504 extends into the side groove 505 through the stroke groove 511. Both sides of the connecting rod 504 are connected to the inner wall of the side groove 505. The bottom of the bottom groove 512 has multiple sliding grooves 513. A movable cylinder 507 is slidably connected in the sliding groove 513. The top of the movable cylinder 507 is connected to the bottom of the bottom block 506. A fixed rod 508 is slidably connected to the inner wall of the movable cylinder 507. The bottom of the fixed rod 508 is connected to the bottom of the sliding groove 513. A spring 509 is sleeved on the outer wall of the fixed rod 508. The two ends of the spring 509 are connected to the bottom of the movable cylinder 507 and the bottom of the sliding groove 513, respectively.

[0031] In a specific implementation, by setting up a clamping device 5, the upper pressure knife moves downward through a hydraulic cylinder, causing the upper pressure knife to press the workpiece at the top of the bending die 3, thereby causing the bending die 3 to move slightly downward. The bending die 3 drives the bottom block 506 to move downward, causing the bottom block 506 to drive the connecting rod 504 in the side groove 505 to move downward. Through the transmission block sliding in the transmission groove 503, the top of the connecting rod 504 drives the transmission block to press the transmission groove 503, causing the transmission groove 503 to be forced to move the clamping block 501 outward. Thus, the two clamping blocks 501 clamp and fix both sides of the bending die 3, preventing the bending die 3 from shifting when the upper pressure knife is pressing, thereby improving the stability of the bending die 3. The greater the pressure of the upper pressure knife, the better the clamping effect of the clamping block 501 on the bending die 3. By setting up a spring 509, the bending die 3 has a better buffer when it comes into contact with the upper pressure knife, avoiding the upper pressure knife directly hitting the bending die 3 and causing damage to the bending die 3, affecting its use.

[0032] The stamping and bending body 1 is equipped with a deflection adjustment device 4. The deflection adjustment device 4 includes a support bar 412. The bottom of the support bar 412 is connected to the inside of the stamping and bending body 1, and the support bar 412 is located on one side of the bending die 3. Multiple placement slots 405 are opened on one side of the support bar 412. A base plate 404 is slidably connected in the placement slot 405. A fixing block 401 is attached to the top of the base plate 404. A wedge block 403 is connected to one side of the fixing block 401. A fixing bolt 402 is provided between the fixing block 401 and the base plate 404. An adjustment slot 411 is opened at the bottom of the placement slot 405. A threaded seat 4 is slidably connected in the adjustment slot 411. 09. The threaded seat 409 is internally threaded with an adjusting bolt 410. One side of the adjusting bolt 410 is rotatably connected to one side of the inner wall of the adjusting groove 411, and the other side of the adjusting bolt 410 extends out of the adjusting groove 411. The top of the threaded seat 409 is connected to the bottom of the base plate 404. Two movable grooves 406 are opened at the bottom of the placement groove 405. A movable block 407 is slidably connected in the movable groove 406. The top of the movable block 407 is connected to the bottom of the base plate 404. A sliding sleeve is embedded in the movable block 407, and a support rod 408 is slidably connected in the sliding sleeve. The two ends of the support rod 408 are respectively connected to the two sides of the inner wall of the movable groove 406.

[0033] In a specific implementation, a deflection adjustment device 4 is provided. The bending die 3 moves slightly downwards due to the force applied by the upper pressure blade. Both one side of the bending die 3 and the other side of the wedge block 403 have inclined surfaces, with the inclined surfaces facing upwards. This allows one side of the bending die 3 to contact the other side of the wedge block 403, causing the inclined block to block and abut against one side of the bending die 3. This adjusts the deflection of the bending die 3 during stamping and bending, preventing breakage due to excessive deflection. An adjusting bolt 410 is provided. Rotating the adjusting bolt 410 moves the threaded seat 409, which in turn moves the base plate 404. The base plate 404, through the fixing block 401, moves the wedge block 403 to one side, thus adjusting the wedge block 403 and keeping it horizontal, thereby ensuring the supporting effect of the wedge block 403.

[0034] Working principle: During use, the workpiece is placed on top of the bending die 3. Then, the upper pressure knife is moved downward by the hydraulic cylinder push rod, causing the upper pressure knife to squeeze the workpiece. The workpiece causes the bending die 3 to move downward, causing the bending die 3 to squeeze the bottom block 506. The bottom block 506 causes the connecting rod 504 in the side groove 505 to move. The connecting rod 504 causes the transmission block to slide in the transmission groove 503, which in turn causes the transmission block to move the clamping block 501 outward. Thus, the two clamping blocks 501 clamp and fix the bending die 3, preventing the bending die 3 from displaced under force, which would reduce the bending accuracy. When the bending die 3 moves downward, one side of the bending die 3 connects with one side of the wedge block 403, so that the wedge block 403 abuts and limits one side of the bending die 3, preventing the bending die 3 from deforming due to excessive deflection during stamping and bending, which would affect the subsequent bending accuracy.

[0035] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An auxiliary fixture for a stamping die, comprising a stamping and bending body (1), wherein a hydraulic cylinder is mounted on the top of the stamping and bending body (1), and an upper pressing knife is connected to the hydraulic cylinder push rod; and an installation groove (2) is provided inside the stamping and bending body (1), characterized in that, Also includes: A bending die (3) is installed in an installation groove (2); The mounting groove (2) is provided with a clamping device (5). The clamping device (5) includes a bottom groove (512) and two clamping grooves (510). The bottom groove (512) is opened at the bottom of the mounting groove (2), and the clamping grooves (510) are opened on the inner wall of the mounting groove (2). Multiple travel grooves (511) are provided between the bottom groove (512) and the clamping grooves (510). A bottom block (506) is slidably connected in the bottom groove (512). Clamping blocks (501) are provided on both sides of the bottom block (506), so that the bottom block (506) is subjected to force and moves downward, driving the clamping blocks (501) to move outward to clamp and fix the bending mold (3).

2. The auxiliary fixture for stamping dies according to claim 1, characterized in that, The outer wall of the clamping block (501) is attached to and slidably connected to the inner wall of the clamping groove (510), and multiple movable grooves (502) are provided at the bottom of the clamping block (501). Transmission grooves (503) are provided on both sides of the inner wall of the movable groove (502), and a transmission block is slidably connected in the transmission groove (503), and a connecting rod (504) is provided between the two transmission blocks.

3. The auxiliary fixture for a stamping die according to claim 1, characterized in that, The bottom block (506) has multiple side grooves (505) on both sides, and the bottom of the connecting rod (504) extends into the side groove (505) through the stroke groove (511), and the two sides of the connecting rod (504) are respectively connected to the inner wall of the side groove (505).

4. The auxiliary fixture for a stamping die according to claim 1, characterized in that, The bottom of the bottom groove (512) is provided with a plurality of sliding grooves (513). A movable cylinder (507) is slidably connected in the sliding groove (513). The top of the movable cylinder (507) is connected to the bottom of the bottom block (506). A fixed rod (508) is slidably connected to the inner wall of the movable cylinder (507). The bottom of the fixed rod (508) is connected to the bottom of the sliding groove (513). A spring (509) is sleeved on the outer wall of the fixed rod (508). The two ends of the spring (509) are respectively connected to the bottom of the movable cylinder (507) and the bottom of the sliding groove (513).

5. An auxiliary fixture for a stamping die according to claim 1, characterized in that, The stamping and bending body (1) is provided with a deflection adjustment device (4). The deflection adjustment device (4) includes a support bar (412). The bottom of the support bar (412) is connected to the stamping and bending body (1), and the support bar (412) is located on one side of the bending die (3). A plurality of placement slots (405) are opened on one side of the support bar (412). A base plate (404) is slidably connected in the placement slot (405). A fixing block (401) is attached to the top of the base plate (404). A wedge block (403) is connected to one side of the fixing block (401). A fixing bolt (402) is provided between the fixing block (401) and the base plate (404).

6. An auxiliary fixture for a stamping die according to claim 5, characterized in that, The bottom of the placement groove (405) is provided with an adjustment groove (411). A threaded seat (409) is slidably connected in the adjustment groove (411). An adjustment bolt (410) is threadedly connected in the threaded seat (409). One side of the adjustment bolt (410) is rotatably connected to one side of the inner wall of the adjustment groove (411), and the other side of the adjustment bolt (410) extends out of the adjustment groove (411). The top of the threaded seat (409) is connected to the bottom of the base plate (404).

7. An auxiliary fixture for a stamping die according to claim 5, characterized in that, Two movable slots (406) are provided at the bottom of the placement slot (405). A movable block (407) is slidably connected in the movable slot (406). The top of the movable block (407) is connected to the bottom of the base plate (404). A sliding sleeve is embedded in the movable block (407), and a support rod (408) is slidably connected in the sliding sleeve. The two ends of the support rod (408) are respectively connected to the two sides of the inner wall of the movable slot (406).

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