Die clamping device for a lower action bending machine

Abstract

The utility model relates to the technical field of bending machine mould positioning, concretely to a mould clamping piece for lower movable type bending machine, include: machine body, the top surface of machine body is equipped with hydraulic cylinder, the extension end of hydraulic cylinder is equipped with upper die, the inside bottom surface of machine body is equipped with the mounting groove, the bottom surface middle part of mounting groove is equipped with the movable slot, the clamping structure is installed on the machine body, the clamping structure includes bidirectional screw rod, the inside of movable slot is movably installed through bearing of bidirectional screw rod, the middle part of bidirectional screw rod is fixedly installed with first bevel gear, the inside of the front of machine body is movably installed through bearing with second bevel gear. The utility model discloses the recess and the groove for the fixed lower mould are set up in the bottom surface of mounting plate, and the impurity cannot enter into the recess upwards, can effectively avoid the impurity to block the recess, makes the smooth activity of the recess and the inside of groove of clamping block, guarantees the installation stability to the lower mould.

Description

Technical Field

[0001] This utility model relates to the field of bending machine mold positioning technology, specifically a mold clamping component for a downward-moving bending machine. Background Technology

[0002] Bending machines use molds to process metal sheets. Normally, the lower mold is engaged with the surface of the bending machine through a slot. However, during the bending process, the lower mold needs to be clamped to prevent it from sliding when the upper mold squeezes it.

[0003] In response, Chinese patent application number CN202421198233.2 discloses an adjustable clamping device for a bending machine die, comprising a machine body, a bottom die base, and a lower die. The bottom die base is welded to the worktable surface of the machine body, and a slot is formed on the upper surface of the bottom die base. A bidirectional lead screw is movably installed inside the bottom die base, and a motor is fixedly connected to one end of the bidirectional lead screw. Clamps are symmetrically threaded onto the bidirectional lead screw. To overcome the defect of the non-adjustable lower die clamp of the bending machine, this utility model uses the bidirectional lead screw to drive the movement of the two clamps, thereby achieving adjustment of the clamping position to accommodate lower dies of different lengths.

[0004] The device uses a two-way lead screw and a clamp to fit the edges and corners of the lower mold and hold it in place. However, the movement of the clamp on the bottom mold base requires a movable groove to be reserved on the bottom mold base. The movable groove provides a condition for the entry of debris, making it easy for debris to accumulate in the movable groove. Over time, the movable groove is easily blocked, which hinders the movement of the clamp and affects the user experience of the device.

[0005] Therefore, in order to solve the above problems, a die clamping component for a downward-moving bending machine is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a mold clamping component for a downward-moving bending machine, so as to solve the problem mentioned in the background art that the device can clamp and fix the lower mold by setting a bidirectional lead screw and a clamp to fit the corner of the lower mold. However, the movement of the clamp on the bottom mold base requires a movable groove to be reserved on the bottom mold base. The setting of the movable groove provides a condition for the entry of debris, making the movable groove easy to accumulate debris. Over time, the movable groove is easy to block the movable groove, which hinders the movement of the clamp and affects the user experience of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mold clamping component for a downward-moving bending machine, comprising: a machine body, wherein a hydraulic cylinder is mounted on the top surface of the machine body, and an upper mold is mounted on the extended end of the hydraulic cylinder; The inner bottom surface of the body is provided with a mounting groove, and the bottom surface of the mounting groove is provided with a movable groove in the middle. The machine body is equipped with a clamping structure, which includes a bidirectional threaded rod. The bidirectional threaded rod is movably mounted inside a movable slot via bearings. A first bevel gear is fixedly mounted in the middle of the bidirectional threaded rod. A second bevel gear is movably mounted inside the front of the machine body via bearings. A hand-operated rod is fixedly connected to the front end of the second bevel gear. Locking blocks are threaded to the outer ends of both ends of the bidirectional threaded rod. An installation plate is placed inside the installation slot. Handles are welded to both ends of the top surface of the installation plate. Two sets of threaded posts are welded between the two sets of handles. A lower mold is placed in the middle of the top surface of the installation plate. Nuts are fixedly mounted to the outer ends of the upper ends of the threaded posts via threads. A groove is formed on the bottom surface of the installation plate, and locking slots are formed on both sides of the groove.

[0008] Preferably, the upper mold is located above the lower mold, and the lower mold is adapted to the upper mold.

[0009] Preferably, the second bevel gear is located on the front side of the bidirectional threaded rod, the second bevel gear meshes with the first bevel gear, and the front end of the hand-operated rod is located on the front of the machine body.

[0010] Preferably, the card block is slidably installed inside the movable groove, with the upper end of the card block located inside the mounting groove and the upper end of the card block locked inside the card groove.

[0011] Preferably, the threaded post is welded to the top surface of the mounting plate, the threaded post penetrates the lower mold, and the nut is located on the upper side of the lower mold.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by opening the groove and slot for fixing the lower mold on the bottom surface of the mounting plate, impurities cannot enter the groove upwards, which can effectively prevent debris from clogging the groove, so that the movement of the card block inside the groove and slot remains smooth, ensuring the installation stability of the lower mold.

[0013] This invention features a clamping structure. Rotating the hand crank causes the second bevel gear to rotate, meshing with the first bevel gear. The rotation of the hand crank, in turn, drives the bidirectional threaded rod to rotate via the second and first bevel gears. Two sets of locking blocks are threaded to both ends of the bidirectional threaded rod, and these blocks are slidably mounted inside the movable groove. Therefore, when the bidirectional threaded rod rotates, it moves the two sets of locking blocks closer together, reducing the distance between them and facilitating their insertion into the groove. The lower mold is placed downwards on the top surface of the mounting plate, with the threaded post penetrating the end of the lower mold. The nut is then screwed to the top of the threaded post to fix the lower mold to the top surface of the mounting plate. Lifting the handle allows the mounting plate to be moved downwards and placed inside the mounting slot. The two sets of locking blocks on the bottom can then be precisely inserted into the grooves on the bottom of the mounting plate. Reversing the lever will move the two sets of locking blocks away from each other, causing them to move within the groove and then into the slot. The locking blocks will then lock into the slot, fixing the mounting plate inside the mounting slot and facilitating the easy installation of the lower mold on the machine body. After installation, the mounting plate can shield the inside of the mounting slot, preventing impurities from entering the mounting slot and the movable slot. Since both the groove and the slot are located on the bottom of the mounting plate, impurities cannot enter upwards into the groove and slot, keeping the inside of the groove and slot clean and providing conditions for the smooth movement of the locking blocks. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an exploded view of the clamping structure of this utility model; Figure 4 This is a top view sectional diagram of the groove structure of this utility model.

[0015] In the diagram: 1. Machine body; 11. Hydraulic cylinder; 12. Upper mold; 13. Mounting slot; 14. Movable slot; 2. Clamping structure; 21. Bidirectional threaded rod; 22. First bevel gear; 23. Second bevel gear; 24. Hand crank; 25. Locking block; 26. Mounting plate; 27. Handle; 28. Threaded column; 29. ​​Lower mold; 210. Nut; 211. Groove; 212. Slot. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This utility model provides an embodiment of a die clamping component for a downward-moving bending machine: The body 1, hydraulic cylinder 11 and upper mold 12 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0018] A die clamping component for a downward-moving bending machine includes: a machine body 1, a hydraulic cylinder 11 mounted on the top surface of the machine body 1, and an upper die 12 mounted on the extended end of the hydraulic cylinder 11. The inner bottom surface of the body 1 is provided with a mounting groove 13, and the bottom center of the mounting groove 13 is provided with a movable groove 14; A clamping structure 2 is installed on the body 1. The clamping structure 2 includes a bidirectional threaded rod 21, which is movably mounted inside the movable slot 14 via bearings. A first bevel gear 22 is fixedly installed in the middle of the bidirectional threaded rod 21. A second bevel gear 23 is movably mounted inside the front of the body 1 via bearings. A hand-operated rod 24 is fixedly connected to the front end of the second bevel gear 23. Locking blocks 25 are threaded to the outer sides of both ends of the bidirectional threaded rod 21. An installation plate 26 is placed inside the mounting slot 13. Handles 27 are welded to both ends of the top surface of the installation plate 26. Two sets of screws are welded between the two sets of handles 27. The threaded column 28 and the mounting plate 26 have a lower mold 29 placed in the middle of the top surface. The upper outer side of the threaded column 28 is fixed with a nut 210 by threads. The bottom surface of the mounting plate 26 has a groove 211 and slots 212 on both sides of the groove 211. By opening the groove 211 and slots 212 for fixing the lower mold 29 on the bottom surface of the mounting plate 26, impurities cannot enter the groove 211 upwards, which can effectively prevent debris from clogging the groove 211. This allows the movement of the locking block 25 inside the groove 211 and slots 212 to remain smooth, ensuring the installation stability of the lower mold 29.

[0019] Furthermore, the upper mold 12 is located on the upper side of the lower mold 29, and the lower mold 29 is adapted to the upper mold 12. The upper mold 12, in conjunction with the lower mold 29, can bend the metal sheet.

[0020] Furthermore, the second bevel gear 23 is located on the front side of the bidirectional threaded rod 21, and the second bevel gear 23 meshes with the first bevel gear 22. The front end of the hand-rotating rod 24 is located on the front of the machine body 1. Rotating the hand-rotating rod 24 can drive the bidirectional threaded rod 21 to rotate through the second bevel gear 23 and the first bevel gear 22.

[0021] Furthermore, the locking block 25 is slidably installed inside the movable groove 14, with the upper end of the locking block 25 located inside the mounting groove 13. The upper end of the locking block 25 is locked inside the slot 212, and the locking block 25, together with the slot 212, provides a connection and fixation for the mounting plate 26 and the lower mold 29 on the body 1.

[0022] Furthermore, the threaded post 28 is welded to the top surface of the mounting plate 26, the threaded post 28 penetrates the lower mold 29, and the nut 210 is located on the upper side of the lower mold 29. The threaded post 28 and the nut 210 provide a connection and fixation for the installation of the lower mold 29 on the mounting plate 26.

[0023] Working principle: Before installation, rotate the hand crank 24 to drive the second bevel gear 23 to rotate. The second bevel gear 23 meshes with the first bevel gear 22. The rotation of the hand crank 24 drives the bidirectional threaded rod 21 to rotate through the second bevel gear 23 and the first bevel gear 22. The two ends of the bidirectional threaded rod 21 are respectively connected to two sets of locking blocks 25 by threads. The locking blocks 25 are slidably installed on the inner side of the movable groove 14. Therefore, when the bidirectional threaded rod 21 rotates, it drives the two sets of locking blocks 25 to move, so that the two sets of locking blocks 25 are closer to each other, which can reduce the distance between the two sets of locking blocks 25, so that the two sets of locking blocks 25 can be smoothly inserted into the inside of the groove 211. Place the lower mold 29 downwards on the top surface of the mounting plate 26, so that the threaded post 28 passes through the end of the lower mold 29. Screw the nut 210 to the upper end of the threaded post 28 to fix the lower mold 29 on the top surface of the mounting plate 26. Lift the handle 27 to move the mounting plate 26 downwards to the inside of the mounting groove 13. The two sets of locking blocks 25 on the lower side can be accurately inserted into the groove 211 on the bottom surface of the mounting plate 26. At this time, reverse the hand crank 24 to drive the two sets of locking blocks 25 away from each other. The locking blocks 25 move in the groove 211 and move through the groove 211 to the slot 212. The locking blocks 25 can be locked in the slot 212 to fix the mounting plate 26 inside the mounting groove 13, realizing the convenient installation of the lower mold 29 on the machine body 1. After installation, the mounting plate 26 can cover the inside of the mounting groove 13, preventing impurities from entering the inside of the mounting groove 13 and the movable groove 14. Since the groove 211 and the slot 212 are both located on the lower side of the mounting plate 26, impurities cannot enter the groove 211 and the slot 212 upwards, keeping the inside of the groove 211 and the slot 212 clean and providing conditions for the smooth movement of the locking block 25.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A die holder for a down-stroke bender, comprising: The machine body (1) has a hydraulic cylinder (11) mounted on its top surface and an upper mold (12) mounted on the extended end of the hydraulic cylinder (11). Its features are: The inner bottom surface of the body (1) is provided with a mounting groove (13), and the middle part of the bottom surface of the mounting groove (13) is provided with a movable groove (14). A clamping structure (2) is installed on the body (1). The clamping structure (2) includes a bidirectional threaded rod (21). The bidirectional threaded rod (21) is movably mounted inside the movable slot (14) via a bearing. A first bevel gear (22) is fixedly installed in the middle of the bidirectional threaded rod (21). A second bevel gear (23) is movably mounted inside the front of the body (1) via a bearing. A hand-operated rod (24) is fixedly connected to the front end of the second bevel gear (23). The two ends of the bidirectional threaded rod (21) are threaded with clips. Block (25), an installation plate (26) is placed inside the installation groove (13), handles (27) are welded to both ends of the top surface of the installation plate (26), two sets of threaded columns (28) are welded between the two sets of handles (27), a lower mold (29) is placed in the middle of the top surface of the installation plate (26), a nut (210) is fixedly installed on the outer side of the upper end of the threaded column (28) by thread, a groove (211) is opened on the bottom surface of the installation plate (26), and slots (212) are opened on both sides of the groove (211).

2. The die holder for a lower action press brake of claim 1, wherein: The upper mold (12) is located on the upper side of the lower mold (29), and the lower mold (29) is adapted to the upper mold (12).

3. The die holder for a lower action press brake of claim 1, wherein: The second bevel gear (23) is located on the front side of the bidirectional threaded rod (21), and the second bevel gear (23) meshes with the first bevel gear (22). The front end of the hand-rotating rod (24) is located on the front of the machine body (1).

4. The die holder for a lower action press brake of claim 1, wherein: The card block (25) is slidably installed inside the movable groove (14), the upper end of the card block (25) is located inside the mounting groove (13), and the upper end of the card block (25) is locked inside the card slot (212).

5. The die holder for a lower action press brake of claim 1, wherein: The threaded post (28) is welded to the top surface of the mounting plate (26), the threaded post (28) penetrates the lower mold (29), and the nut (210) is located on the upper side of the lower mold (29).

Images