Self-locking bending mechanism for bending machine

Abstract

A self-locking bending mechanism for a bending machine comprises a working table, an inverted-L-shaped plate is fixedly installed on one side of the working table, a lower die is arranged on the working table, V-shaped bending die grooves with different angles are formed in the four faces of the lower die, an upper die is arranged on the inverted-L-shaped plate corresponding to the lower die, the upper die is installed on the inverted-L-shaped plate through a plurality of electric push rods, and the electric push rods are connected with the V-shaped bending die grooves. The die is characterized in that rotating shafts are fixedly installed at the two ends of the lower die respectively, U-shaped plates are arranged on the peripheries of the rotating shafts in a matched mode, the rotating shafts are matched with the corresponding U-shaped plates in an inserted mode, the U-shaped plates are fixedly installed on the workbench, and L-shaped plates capable of limiting the lower die are arranged on the two sides of the lower die in an attached and matched mode. The lower die lifting device is simple in structure and ingenious in conception, when the lower die needs to be rotated, only the L-shaped plate needs to release limiting of the lower die, lifting equipment does not need to be additionally arranged to lift the lower die, the cost of the device is reduced, meanwhile, operation is easy, time and labor are saved, actual requirements can be met, and the lower die lifting device is suitable for being popularized.

Description

Technical Field

[0001] The utility model belongs to the field of bending equipment, and particularly relates to a bending mechanism for a bending machine with self-locking function. Background Technique

[0002] A bending machine is a machine that can bend thin plates. When the bending machine is running, the steel plate to be bent is placed on the bending die base on the workbench. A variety of specifications of bending die grooves are respectively opened around the bending die base. The bending blade of the bending machine cooperates with the corresponding bending die groove on the bending die base and presses down the steel plate on the bending die base, so that the depressed part of the steel plate sinks into the bending die groove on the bending die base to realize the bending processing operation of the steel plate; the patent with the authorization announcement number CN218079760U: "A bending mechanism for a bending machine with self-locking function", which discloses a device for conveniently adjusting the bending die base, but this device needs to lift the lower die, rotate it and then reset it, which is time-consuming and laborious. At the same time, a lifting device is also needed to lift the lower die, resulting in an increase in the cost of the device. Therefore, we designed a bending mechanism for a bending machine with self-locking function that is simple in operation and structure. Content of the Utility Model

[0003] The utility model provides a bending mechanism for a bending machine with self-locking function to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A bending mechanism for a bending machine with self-locking function includes a workbench. An inverted L-shaped plate is fixedly installed on one side of the workbench. A lower die is arranged on the workbench. V-shaped bending die grooves with different angles are opened on four surfaces of the lower die. An upper die corresponding to the lower die is arranged on the inverted L-shaped plate. The upper die is installed on the inverted L-shaped plate through several electric push rods. It is characterized in that: rotating shafts are respectively fixedly installed at both ends of the lower die. U-shaped plates are arranged in cooperation with the outer circumferences of the rotating shafts. The rotating shafts are inserted and matched with the corresponding U-shaped plates. The U-shaped plates are fixedly installed on the workbench. L-shaped plates capable of limiting the lower die are arranged in fitting contact with both sides of the lower die. A driving device for driving the L-shaped plates to move towards or away from each other is arranged on the workbench.

[0006] For a bending mechanism for a bending machine with self-locking function as described above, the driving device includes a lead screw. A strip-shaped groove communicating with the outside on one side is opened on the workbench. The lead screw is rotatably installed in the strip-shaped groove. One end of the lead screw extends out of the strip-shaped groove. The thread directions on both sides of the lead screw are opposite. Threaded nuts are respectively installed in threaded cooperation at both ends of the lead screw. A first sliding groove is opened on the upper side of the strip-shaped groove. The upper and lower sides of the first sliding groove are communicated with the outside and the strip-shaped groove in sequence. First sliders corresponding to the threaded nuts are arranged in the first sliding groove. The first sliders are slidably installed in the first sliding groove. The first sliders are fixedly installed on the corresponding threaded nuts. The L-shaped plates are respectively fixedly installed on the corresponding first sliders.

[0007] A folding mechanism for a bending machine with self-locking function as described above, one end of the lead screw extending out of the strip-shaped groove is fixedly installed with a telescopic shaft, and the movable end of the telescopic shaft is fixedly installed with a first handwheel.

[0008] A folding mechanism for a bending machine with self-locking function as described above, several second sliding grooves are formed on the workbench, two second sliding blocks are respectively slidably installed in the second sliding grooves, and the second sliding blocks are respectively fixedly installed on the corresponding L-shaped plates.

[0009] A folding mechanism for a bending machine with self-locking function as described above, second handwheels are respectively fixedly installed at the ends of the rotating shafts far away from the lower die.

[0010] A folding mechanism for a bending machine with self-locking function as described above, several threaded holes are respectively formed on the second handwheels, the rotating shaft and the second handwheel are connected through a one-way bearing, and threaded rods are respectively installed in the threaded holes in a threaded fit manner.

[0011] The advantages of the present utility model are: the structure of the present utility model is simple and ingeniously conceived. When it is necessary to rotate the lower die, it is only necessary to release the limit of the lower die by the L-shaped plate, and there is no need to add a lifting device to lift the lower die, which reduces the cost of the device. At the same time, the operation is simple, time-saving and labor-saving, can meet the actual needs, and is suitable for popularization. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is the structural schematic diagram of the present utility model; Figure 2 is Figure 1 the view in the direction of A of Figure 3 is Figure 1 the view in the direction of B of Figure 4 is Figure 2 the view in the direction of C of

[0014] Reference numerals: 1, workbench; 2, inverted L-shaped plate; 3, lower die; 4, V-shaped bending die groove; 5, upper die; 6, electric push rod; 7, rotating shaft; 8, U-shaped plate; 9, L-shaped plate; 20, lead screw; 21, strip-shaped groove; 22, nut; 23, first sliding groove; 24, first sliding block; 30, telescopic shaft; 31, first handwheel; 40, second sliding groove; 41, second sliding block; 50, second handwheel; 60, threaded hole; 61, threaded rod. Detailed Embodiments

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0016] A bending mechanism for a bending machine with self-locking function, such as Figure 1 、 2, as shown in Figures 3 and 4, it includes a workbench 1. An inverted L-shaped plate 2 is fixedly installed on one side of the workbench 1. A lower die 3 is provided on the workbench 1. The lower die 3 is a cuboid, and V-shaped bending die grooves 4 with different angles are opened on four faces of the lower die 3. An upper die 5 is provided on the inverted L-shaped plate 2 corresponding to the lower die 3. The upper die 5 is installed on the inverted L-shaped plate 2 through several electric push rods 6. The fixed ends of the electric push rods 6 are respectively fixedly installed on the inverted L-shaped plate 2, and the movable ends of the electric push rods 6 are respectively fixedly connected to the top side of the upper die 5. It is characterized in that: rotating shafts 7 are respectively fixedly installed at both ends of the lower die 3. A U-shaped plate 8 is provided in a matching manner on the outer circumference of the rotating shaft 7. The rotating shaft 7 is inserted and matched with the corresponding U-shaped plate 8. The diameter of the rotating shaft 7 is smaller than the width of the U-shaped groove on the U-shaped plate 8, ensuring that the rotating shaft 7 can be removed from the U-shaped groove, and the rotating shaft 7 can also rotate on the U-shaped plate 8. The U-shaped plate 8 is fixedly installed on the workbench 1. L-shaped plates 9 capable of limiting the lower die 3 are provided in a fitting manner on both sides of the lower die 3. The vertical plate part of the L-shaped plate 9 is in contact and cooperation with both sides of the lower die 3. The top side of the horizontal plate part of the L-shaped plate 9 is in contact and cooperation with the bottom of the lower die 3. The bottom side of the horizontal plate part of the L-shaped plate 9 is in sliding contact with the top side of the workbench 1. While limiting the lower die 3, the L-shaped plate 9 can also provide support for the lower die 3. A driving device for driving the L-shaped plates 9 to move towards or away from each other is provided on the workbench 1. The structure of the utility model is simple and ingenious. When it is necessary to rotate the lower die 3, it is only necessary to release the limit of the lower die 3 by the L-shaped plate 9, without the need to add a lifting device to lift the lower die 3, reducing the cost of the device. At the same time, the operation is simple, time-saving and labor-saving, can meet the actual needs, and is suitable for popularization. When using the utility model, first place the rotating shafts 7 at both ends of the lower die 3 on the U-shaped plate 8, control the driving device to drive the two L-shaped plates 9 to move towards each other until the L-shaped plates 9 are in fitting contact with the lower die 3 to limit the lower die 3. At this time, place the workpiece on the lower die 3, control the electric push rod 6 to extend, and the movable end of the electric push rod 6 drives the upper die 5 to move downward to bend the workpiece. When it is necessary to replace the V-shaped bending die grooves 4 with different angles, control the driving device to drive the two L-shaped plates 9 to move away from each other, and the L-shaped plates 9 release the limit of the lower die 3. At this time, rotate the rotating shaft 7, and the rotating shaft 7 drives the lower die 3 to rotate. When the V-shaped bending die groove 4 at the required angle is aligned with the upper die 5, stop rotating the rotating shaft 7. At this time, control the driving device to drive the two L-shaped plates 9 to move towards each other until the L-shaped plates 9 are in fitting contact with the lower die 3, and the L-shaped plates 9 re-limit the lower die 3.

[0017] Specifically, as shown in the figure, the driving device in this embodiment includes a lead screw 20. A strip-shaped groove 21 communicating with the outside at one side is formed on the workbench 1. The lead screw 20 is rotatably installed in the strip-shaped groove 21. One end of the lead screw 20 extends out of the strip-shaped groove 21. The thread directions on both sides of the lead screw 20 are opposite. Threaded nuts 22 are respectively installed in threaded fit at both ends of the lead screw 20. The threaded nuts 22 are coaxially arranged with the lead screw 20. A first sliding groove 23 is formed on the upper side of the strip-shaped groove 21. The upper and lower sides of the first sliding groove 23 communicate with the outside and the strip-shaped groove 21 in sequence. A first slider 24 corresponding to the threaded nut 22 is provided in the first sliding groove 23. The first slider 24 is slidably installed in the first sliding groove 23. The first slider 24 is fixedly installed on the corresponding threaded nut 22. The L-shaped plates 9 are respectively fixedly installed on the corresponding first sliders 24. When it is necessary to rotate the lower die 3, rotate the lead screw 20 forward. Since the thread directions on both sides of the lead screw 20 are opposite, at this time, the threaded nut 22 drives the L-shaped plates 9 to move away from each other through the first slider 24 until the L-shaped plates 9 no longer contact the lower die 3, and the limit on the lower die 3 is released. At this time, the lower die 3 can be rotated by rotating the rotating shaft 7, and the V-shaped bending die groove 4 at a suitable angle can be selected to bend the workpiece; when the lower die 3 is no longer rotated, rotate the lead screw 20 in the reverse direction. The threaded nut 22 drives the L-shaped plates 9 to move towards each other through the first slider 24 until the L-shaped plates 9 are in fit with the lower die 3, and then stop rotating the lead screw 20. At this time, the L-shaped plates 9 limit the lower die 3 to prevent the lower die 3 from rotating.

[0018] Specifically, as shown in the figure, one end of the lead screw 20 extending out of the strip-shaped groove 21 is fixedly installed with a telescopic shaft 30. The fixed end of the telescopic shaft 30 is fixedly connected to and coaxially arranged with one end of the lead screw 20 extending out of the strip-shaped groove 21. The movable end of the telescopic shaft 30 cannot rotate relative to the fixed end. A first handwheel 31 is fixedly installed at the movable end of the telescopic shaft 30. When it is necessary to rotate the lead screw 20, stretch the telescopic shaft 30, which can facilitate the rotation of the first handwheel 31. It is more convenient to rotate the lead screw 20 through the first handwheel 31. When the lead screw 20 does not need to be rotated, retract the telescopic shaft 30 to the shortest length, which can avoid the first handwheel 31 from affecting the people coming and going.

[0019] Furthermore, as shown in the figure, several second sliding grooves 40 are formed on the workbench 1 in this embodiment. In this embodiment, there are two second sliding grooves 40, which are symmetrically distributed front and back. Two second sliders 41 are respectively slidably installed in the second sliding grooves 40. The second sliders 41 are respectively fixedly installed on the corresponding L-shaped plates 9. The second sliders 41 can move along with the corresponding L-shaped plates 9 to limit the L-shaped plates 9 and make the L-shaped plates 9 move more smoothly.

[0020] Furthermore, as shown in the figure, second handwheels 50 are respectively fixedly installed at the ends of the rotating shaft 7 away from the lower die 3. It is more convenient and labor-saving to rotate the rotating shaft 7 and the lower die 3 through the second handwheels 50.

[0021] Further, as shown in the figure, several threaded holes 60 are respectively formed in the second handwheel 50 in this embodiment. In this embodiment, four threaded holes 60 are formed in each second handwheel 50, and the four threaded holes 60 are evenly distributed along the circumference. The rotating shaft 7 is connected to the second handwheel 50 through a one-way bearing. The outer circumference of the one-way bearing is fixedly connected to the second handwheel 50, and the inner circumference of the one-way bearing is fixedly connected to the outer circumference of the rotating shaft 7. Threaded rods 61 are respectively installed in the threaded holes 60 in a threaded fit manner. When the threaded rod 61 is screwed into the corresponding threaded hole 60, it is more labor-saving to rotate the second handwheel 50 through the threaded rod 61 at this time. After the rotation is completed, when the second handwheel 50 is rotated in the reverse direction through the threaded rod 61, the second handwheel 50 cannot drive the rotating shaft 7 to rotate under the action of the one-way bearing. Rotate the second handwheel 50 to the state as shown in Figure 4 , which can reduce the possibility of affecting the operation of the staff due to the excessive length of the threaded rod 61.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A self-locking bending mechanism for a bending machine, comprising a workbench (1), an inverted L-shaped plate (2) fixedly mounted on one side of the workbench (1), a lower die (3) being arranged on the workbench (1), four surfaces of the lower die (3) being provided with V-shaped bending die grooves (4) of different angles, an upper die (5) being arranged on the inverted L-shaped plate (2) corresponding to the lower die (3), the upper die (5) being mounted on the inverted L-shaped plate (2) via a plurality of electric push rods (6), characterized in that: The two ends of the lower mold (3) are respectively fixedly mounted with a rotating shaft (7), the outer periphery of the rotating shaft (7) is matched with a U-shaped plate (8), the rotating shaft (7) and the corresponding U-shaped plate (8) are plugged and matched, the U-shaped plate (8) is fixedly mounted on the workbench (1), the two sides of the lower mold (3) are fitted with L-shaped plates (9) capable of limiting the position of the lower mold (3), the workbench (1) is provided with a driving device for driving the L-shaped plates (9) to move toward or away from each other, the driving device comprises a screw rod (20), the workbench (1) is provided with a strip groove (21) on one side of which is connected to the outside, the screw rod (20) is rotatably mounted in the strip groove (21), and the screw rod One end of the screw rod (20) extends out of the strip groove (21), the threads on both sides of the screw rod (20) are rotated in opposite directions, the two ends of the screw rod (20) are respectively threaded to fit the screw nut (22), a first slide groove (23) is provided on the upper side of the strip groove (21), the upper and lower sides of the first slide groove (23) are connected with the outside and the strip groove (21) in sequence, a first slider (24) is provided in the first slide groove (23) corresponding to the screw nut (22), the first slider (24) is slidably installed in the first slide groove (23), the first slider (24) is fixedly installed on the corresponding screw nut (22), and the L-shaped plates (9) are respectively fixedly installed on the corresponding first sliders (24).

2. A self-locking bending mechanism for a bending machine according to claim 1, characterized in that: One end of the screw rod (20) extending out of the strip-shaped groove (21) is fixedly mounted on a telescopic shaft (30), and a first hand wheel (31) is fixedly mounted on a movable end of the telescopic shaft (30).

3. A self-locking bending mechanism for a bending machine according to claim 1, characterized in that: The workbench (1) is provided with a plurality of second sliding grooves (40), two second sliding blocks (41) are respectively slidably installed in the second sliding grooves (40), and the second sliding blocks (41) are respectively fixedly installed on the corresponding L-shaped plates (9).

4. A self-locking bending mechanism for a bending machine according to claim 1, characterized in that: A second hand wheel (50) is fixedly mounted on one end of the rotating shaft (7) away from the lower mold (3).

5. A self-locking bending mechanism for a bending machine according to claim 4, characterized in that: The second hand wheel (50) is provided with a plurality of threaded holes (60), the rotating shaft (7) and the second hand wheel (50) are connected via a one-way bearing, and threaded rods (61) are respectively threadedly mounted in the threaded holes (60).

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