Synchronous punching and bending die

Abstract

A synchronous punching and bending die comprises an upper die body and a lower die body, the upper die body comprises an upper die base, an upper die plate and an upper clamping plate which are sequentially connected from top to bottom, the lower die body comprises a lower die base, supporting feet and a lower die plate which are sequentially connected from bottom to top, a punch is arranged below the upper clamping plate, and telescopic devices are arranged on the two sides of the punch. An upper slotting tool is arranged on the side, close to the telescopic device, of the lower die plate, the lower die plate and the punch are correspondingly provided with a punching female die in parallel, a lower slotting tool is arranged below the upper slotting tool in a matched mode, and at least one reset spring is arranged at the tail end of the lower slotting tool, so that the punching and bending processes are synchronously and circularly operated. According to the structure, the working procedures of bending and punching of a workpiece can be completed at the same time, multiple sets of dies are prevented from being adopted to complete the working procedures, and the stripping process is completed through the L-shaped telescopic rod, so that the phenomenon of material blocking is prevented, the production efficiency is improved, and the reject ratio is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, and particularly relates to a synchronous punching and bending die. Background Technique

[0002] In the process of metal sheet processing, punching and bending are common technological operations. Traditional punching and bending dies usually have problems such as complex structure, inconvenient operation, low machining accuracy, and short die life. Existing punching presses have a large volume and a relatively complex structure, requiring high starting energy consumption during use, and are not suitable for small-batch processing and production. For some parts that need to be bent and punched simultaneously, two sets of dies are required for bending and punching respectively. It is possible to bend first and then punch, or punch first and then bend. The production efficiency is low, and the connection and positioning need to be considered between the two processes, making it difficult to guarantee the accuracy and quality of the workpiece.

[0003] In view of the existing problems, on the one hand, in order to reduce energy consumption and improve resource utilization rate, combining the punching process and the bending process in one punching press die can shorten the processing time of the sheet metal, thereby improving production efficiency; on the other hand, when the existing die punches the sheet material, there will be deviation in the punching position, with low accuracy, and there will also be a problem that the sheet material is easily stuck on the punch and cannot be stripped. Therefore, a punching and bending die with a more reasonable structure, a wider application range, better performance, and more convenient stripping is needed. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a synchronous punching and bending die, which has the functions of sheet metal cutting, sheet metal bending, and sheet metal punching to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A synchronous punching and bending die includes an upper die and a lower die. The upper die includes an upper die base, an upper template, and an upper clamping plate connected in sequence from top to bottom. The lower die includes a lower die base, a support leg, and a lower template connected in sequence from bottom to top. A punch is arranged below the upper clamping plate, telescopic devices are arranged on both sides of the punch, an upper insert knife is arranged on one side close to the telescopic device, a punching die cavity corresponding to the punch in parallel is arranged on the lower template, a lower insert knife is arranged in cooperation with the lower part of the upper insert knife, and at least one return spring is arranged at the end of the lower insert knife, so that the punching and bending processes run synchronously in a cycle.

[0007] Preferably, the telescopic device includes a telescopic rod, and the telescopic rod is L-shaped.

[0008] Preferably, the bottom of the upper template is matched with an inner guide post arranged on the lower template by arranging a sleeve.

[0009] Preferably, the upper die holder is connected to the lower die holder through an external guide post.

[0010] Preferably, the upper die holder is connected to the upper template through bolts.

[0011] Preferably, an infrared positioner is provided at one end of the bottom of the upper clamping plate near the feeding position, and a cutting knife is provided on the infrared positioner.

[0012] Preferably, a cylinder is provided on the right side of the lower die holder, the output end of the cylinder is arranged inward, a PLC controller is provided on the inner guide post near one side, and the PLC controller is electrically connected to the cylinder to control the operation of the cylinder.

[0013] Preferably, a blanking hole is provided at the position corresponding to the upper die in the punching die cavity, the blanking hole penetrates through the lower template, and a waste box is placed below the blanking hole.

[0014] Preferably, wear-resistant plates are provided on both sides of the punching die cavity.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The structure of the present utility model is simple and the operation is convenient. By setting structures such as inner guide posts, external guide posts and return springs, the precision and efficiency of punching and bending are effectively improved, and at the same time, the service life of the die is prolonged.

[0017] On both sides of the punch, expansion rods and upper insertion knives are provided in cooperation. The punching die cavity and the abutting blocks are jointly connected and a sheet metal part is placed above. When the upper die moves downward, the punch and the upper insertion knife will move simultaneously. The punch punches the sheet metal part from the surface, and the upper insertion knife will cooperate with the lower insertion knife to fix and bend the sheet metal part, so that punching and bending are carried out synchronously; when the upper die moves upward, the expansion rods abut against both sides of the sheet metal part, so that the punch moves upward and separates from the sheet metal part, thereby realizing efficient material removal and preventing the occurrence of material jamming. The forming process is greatly simplified, its internal structure is reasonably designed, the volume is small, the applicable installation range is wide, and in addition, the production efficiency is effectively improved and the production cost of the die is reduced. Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the synchronous punching and bending die of the present utility model when the die is opened;

[0019] Figure 2 It is a structural schematic diagram of the synchronous punching and bending die of the present utility model when the die is closed.

[0020] The figure includes: 1 - upper die holder, 2 - lower die holder, 3 - punch, 4 - upper insert knife, 5 - lower insert knife, 6 - upper template, 7 - upper clamping plate, 8 - lower template, 9 - inner guide pillar, 10 - outer guide pillar, 11 - return spring, 12 - support feet, 13 - fixing block, 14 - telescopic rod, 15 - PLC controller, 16 - infrared positioner, 17 - cutting knife, 18 - support block, 19 - cylinder, 20 - bolt, 21 - waste bin, 22 - sleeve, 23 - punching concave die, 24 - wear-resistant plate, 25 - sheet metal part, 26 - blanking hole. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "one side", "the other side", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] Please refer to Figure 1-2 As shown, the present invention provides a technical solution: a synchronous punching and bending die, including an upper die and a lower die. The upper die includes an upper die holder 1, an upper template 6, and an upper clamping plate 7 connected in sequence from top to bottom. The lower die includes a lower die holder 2, support feet 12, and a lower template 8 connected in sequence from bottom to top. A punch 3 is arranged below the upper clamping plate 7, and L-shaped telescopic rods 14 are arranged on both sides of the punch 3. When the punch 3 moves downward to punch the sheet metal part 25, the L-shaped telescopic rods 14 arranged correspondingly on both sides press the sheet metal part 25, playing a role of pressing and fixing when the die is closed, and preventing the punch 3 from jamming materials when the die is opened; an upper insert knife 4 is arranged on the left side close to the L-shaped telescopic rod 14. An punching concave die 23 is arranged on the lower template 8 parallel to the punch 3. A lower insert knife 5 is arranged in cooperation with the lower part of the upper insert knife 4, and a return spring 11 is arranged at the end of the lower insert knife 5. When stamping, the upper insert knife 4 and the lower insert knife 5 cooperate with each other, so that one end of the sheet metal part 25 is affected by the acting force of the upper insert knife 4 and bends downward along the lower insert knife 5 at a certain angle. Then the return spring 11 quickly resets the lower insert knife 5, improving the working efficiency.

[0024] In this embodiment, a cylinder 19 is provided on the right side of the lower die base 2. The output end of the cylinder 19 is arranged towards the inside of the die. A PLC controller 15 is provided on the inner guide post 9 near one side. The PLC controller 15 is electrically connected to the cylinder 19 to control the operation of the cylinder 19. When performing punching and bending operations, the PLC controller 15 controls the cylinder 19 to expand and contract to push the sheet metal part 25. The sheet metal part 25 moves along the abutting block 18 and the wear-resistant plate 24 to a preset position. Then, the infrared positioner 16 on the upper clamping plate 7 performs positioning. Subsequently, the punch 3 and the upper insert knife 4 are synchronously pressed downward, ensuring the accuracy and synchronism of the punching and bending positions.

[0025] In this embodiment, the infrared positioner 16 can position the sheet metal part 25. By modifying the position parameters in advance, the cutting knife 17 is controlled to adjust its position to cut the sheet metal part 25 into a suitable size to meet the actual production requirements.

[0026] As Figure 1-2 shown, an inner guide post 9 and an outer guide post 10 are provided between the upper die and the lower die. The bottom of the upper template 6 is connected to the upper clamping plate 7 by a sleeve 22. The sleeve 22 cooperates with the inner guide post 9. The outer guide post 10 connects the upper die base 1 and the lower die base 2, ensuring the accurate die closing of the upper die base 1 and the lower die base 2. The inner guide post 9 moves along with the movement of the outer guide post 10, which is beneficial for the internal punching and bending mechanism to accurately punch the sheet metal part 25.

[0027] In this embodiment, the upper die base 1 is connected to the upper template 6 by bolts 20. The bolts 20 fixedly connect the upper die base 1 and the upper template 6 tightly together, improving the overall stability of the die.

[0028] In this embodiment, a blanking hole 26 is provided at the position corresponding to the upper die in the punching female die 23. The blanking hole 26 penetrates through the lower template 8. A waste box 21 is placed below the blanking hole 26. The punching waste enters the waste box 21 through the blanking hole 26, facilitating the discharge of waste. The waste box 21 is used to collect the waste generated when the punch 3 punches the sheet metal part 25. The waste is centrally placed in the waste box 21, which is convenient for the unified recycling and smelting of the waste, improving the resource utilization rate and the cleanliness inside the die.

[0029] In this embodiment, wear-resistant plates 24 are respectively provided on both sides of the punching female die 23 on the lower template 8. By providing the wear-resistant plates 24, when the sheet metal part 25 moves horizontally on the punching female die 23, it can withstand the repeated friction of the sheet metal part 23, improving the wear resistance of the punching female die 23, and indirectly extending the service life of the die, avoiding the problem of replacing internal components due to long-term wear, and reducing the generation of unnecessary maintenance time and costs.

[0030] The working principle of the present utility model: AsFigure 1-2 As shown, when the mold is closed, the right cylinder 19 is controlled by the PLC controller 15, and the telescopic output end of the cylinder 19 pushes the sheet metal 25 along the support block 18 to the punching die 23, and the wear-resistant plate 24 contacts the sheet metal 25. The upper die seat 1 is pressed downward along the outer guide column 10, thereby driving the punch 3 to move downward, and the infrared positioner 16 on one side positions the sheet metal 25. By modifying the position parameters in advance, the cutting knife 17 is controlled to adjust the position to cut the sheet metal 25 into the required size and length. The bottom of the upper template 6 is matched with the inner guide column 9 set on the lower template 8 by setting the sleeve 22, and the upper splint 7 continues When moving downward, the L-shaped telescopic rods 14 on both sides of the punch 3 also move downward, pressing the sheet metal 25 on the punching die 23 in advance, and the punch 3 then punches a hole on the surface of the sheet metal 25. At the same time, the upper inserting knife 4 on the left side of the punch 3 and the cutting knife 17 movably arranged on the infrared locator 16 on the right side move downward synchronously, and the bending surfaces of the upper inserting knife 4 and the lower inserting knife 5 are inclined at 30 degrees. The return spring 11 set at the end of the lower inserting knife 4 can be adjusted up and down, so that one end of the sheet metal 25 is bent, and the other end is cut out of excess sheet material by the cutting knife 17 to obtain a sheet metal part 25 of uniform standard size.

[0031] When the mold is opened, the upper mold base 1 moves upward along the outer guide column 10, and the upper splint 7 moves upward accordingly, driving the entire punching and bending mechanism to move upward as a whole. At the same time, the punch 3 may get stuck on the sheet metal 25 and be unable to remove the material. The L-shaped telescopic rods 14 on both sides of the punch 3 are not affected by the gravitational potential energy of the upper mold pressing downward, and are in an extended state, and their length is greater than the length of the punch 3. When the punch 3 gets stuck, the L-shaped telescopic rods 14 on both sides extend downward to support the sheet metal 25, so that the punch 3 can successfully complete the punching process and prevent the occurrence of material jamming.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A synchronous punching and bending die, comprising an upper die and a lower die. The upper die includes an upper die base, an upper template, and an upper clamping plate that are sequentially connected from top to bottom. The lower die includes a lower die base, supporting feet, and a lower template that are sequentially connected from bottom to top. It is characterized in that, A punch is arranged below the upper clamping plate. Telescopic devices are arranged on both sides of the punch. An upper insertion knife is arranged on one side close to the telescopic device. A punching die is arranged parallel to the punch on the lower template. A lower insertion knife is arranged in cooperation with the lower part of the upper insertion knife. At least one return spring is arranged at the end of the lower insertion knife, so that the punching and bending processes run synchronously in a cycle.

2. The synchronous punching and bending die according to claim 1, characterized in that, The telescopic device includes a telescopic rod, and the telescopic rod is L-shaped.

3. The synchronous punching and bending die according to claim 1, characterized in that, The bottom of the upper template is matched with the inner guide posts arranged on the lower template by arranging sleeves.

4. A synchronous punching and bending die according to claim 1, characterized in that, The upper die base is connected to the lower die base through outer guide posts.

5. The synchronous punching and bending die according to claim 1, characterized in that, The upper die base is connected to the upper template by bolts.

6. The synchronous punching and bending die according to claim 1, wherein, An infrared locator is arranged at one end of the bottom of the upper clamping plate close to the feeding position, and a cutting knife is arranged on the infrared locator.

7. A synchronous punching and bending die according to claim 1 or 2, characterized in that, A cylinder is arranged on the right side of the lower die base. The output end of the cylinder faces inwards. A PLC controller is arranged on one of the inner guide posts close to one side. The PLC controller is electrically connected to the cylinder to control the operation of the cylinder.

8. A synchronous punching and bending die according to claim 1, characterized in that, A blanking hole is arranged at the position corresponding to the upper die in the punching die. The blanking hole penetrates through the lower template, and a waste box is placed below the blanking hole.

9. A synchronous punching and bending die according to claim 1 or 8, characterized in that, Wear-resistant plates are arranged on both sides of the punching die.

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