Subframe punching equipment

Abstract

The utility model relates to a kind of subframe punching equipment, including base and the support being set on the top of base, support top is equipped with positioning structure and compaction structure;Subframe can be placed in support top and is positioned by positioning structure, compaction structure is used to compact the subframe after positioning on support;Four punching equipment corresponding to the U-shaped cavity of subframe on the upper part to be processed one to one are equipped on base, any punching equipment includes translation mechanism and the punching tongs being set in the top of translation mechanism;Translation mechanism is used to move punching tongs to the working position of processable U-shaped cavity, or exit from working position;Compared with prior art, the clamping of subframe can be completed using the utility model, and the opening hole punching machining of four U-shaped cavities on subframe is synchronously completed by four punching equipment, and the processing time is shorter, and the processing efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically to a subframe punching device. Background Technology

[0002] After welding, the automotive subframe requires punching, such as... Figure 1 As shown, the subframe has four U-shaped cavity 01 structures, such as Figure 2 As shown, both side plates 02 of any U-shaped cavity 01 need to be punched to form a pair of crotch holes. In the prior art, the processing method for these four pairs of crotch holes is to punch one pair of crotch holes at the same time with a punching pliers, and then punch the next pair of crotch holes. That is, it is necessary to complete the punching of the crotch holes of the subframe in four steps, which takes a long time and has low processing efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a subframe punching device to address the problem that in the existing technology, when punching holes in the U-shaped cavity structure of an automobile subframe, each U-shaped cavity opening is processed sequentially with a punching pliers, which requires step-by-step punching, resulting in long processing time and low processing efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A subframe punching device includes a base and a bracket mounted on the base. The bracket has a positioning structure and a clamping structure on its top. The subframe can be placed on the top of the bracket and positioned by the positioning structure. The clamping structure is used to press the positioned subframe onto the bracket. The base has four punching devices that correspond one-to-one with U-shaped cavities to be processed on the subframe. Each punching device includes a translation mechanism and a punching clamp mounted on top of the translation mechanism. The translation mechanism is used to move the punching clamp to a working position where the U-shaped cavity can be processed, or to retract it from the working position. Each translation mechanism includes a first slide rail mounted on the base. A sliding seat is slidably mounted on the first slide rail. The sliding seat is connected to a first telescopic cylinder, which is used to drive the sliding seat to slide along the first slide rail. The punching clamp is mounted on the sliding seat.

[0005] In this utility model employing the aforementioned technical solution, when punching is required on the subframe, the subframe is placed on top of the support, positioned by a positioning structure, and clamped by a clamping structure to achieve stable clamping. Then, four translation mechanisms synchronously move their respective punching pliers to the working position where the U-shaped cavities can be processed. The four punching pliers simultaneously complete the punching of the crotch holes. Afterward, the four translation mechanisms synchronously move their respective punching pliers out of the working position. Once the clamping structure is released, the subframe can be removed. Compared to the prior art, which requires punching each U-shaped cavity sequentially to process the crotch holes of each U-shaped cavity when punching holes in the U-shaped cavity structure of an automobile subframe (i.e., step-by-step punching, resulting in long processing time and low processing efficiency), this utility model can complete the clamping of the subframe and simultaneously complete the punching of the crotch holes of the four U-shaped cavities on the subframe using four punching devices, resulting in shorter processing time and higher processing efficiency.

[0006] Furthermore, the punching pliers include a plier body base with a protruding support block formed on the plier body base. The support block can be embedded between the two side plates of the U-shaped cavity to form support. The support block has a first die and a second die on opposite sides. The plier body base is provided with a third telescopic cylinder and a fourth telescopic cylinder. The piston rod of the third telescopic cylinder is connected to the first punch, and the third telescopic cylinder can drive the first punch to cooperate with the first die for punching. The piston rod of the fourth telescopic cylinder is connected to the second punch, and the fourth telescopic cylinder can drive the second punch to cooperate with the second die for punching. With the above structure, the punching pliers are moved by a translation mechanism, which drives the support block to enter from the opening of the U-shaped cavity and be embedded in the U-shaped cavity. The two sides of the support block with the die abut against the two side plates of the U-shaped cavity to form support. The third telescopic cylinder drives the first punch to cooperate with the first die for punching one side plate, and the fourth telescopic cylinder drives the second punch to cooperate with the second die for punching the other side plate.

[0007] Furthermore, the sliding seat includes a first slider and a second slider located above the first slider. The bottom of the first slider is slidably mounted on a first slide rail, and the top of the first slider is provided with a second slide rail. The bottom of the second slider is slidably mounted on the second slide rail. The first and second slide rails are perpendicular to each other. The punching pliers are located on the top of the second slider. Theoretically, as long as the first slide rail is parallel to the opening direction of the U-shaped cavity, the support block can be smoothly embedded into the U-shaped cavity. However, in reality, there are slight deviations due to errors. Through the above-mentioned settings, the punching pliers have floating space in the direction perpendicular to the first slide rail, that is, the support block has floating space in the direction perpendicular to the opening direction of the U-shaped cavity. During the process of the support block entering the opening of the U-shaped cavity and reaching its position, it can automatically adjust its position and center itself by squeezing the side plate, making the entry resistance smaller and preventing the situation of jamming and inability to enter.

[0008] Furthermore, a reset elastic element is connected between the first slider and the second slider; when the punching pliers are not in the working position, the reset elastic element has a reset function, so that the support block of the punching pliers is aligned with the opening of the U-shaped cavity, thus preventing the support block from being unable to enter the opening of the U-shaped cavity during the next punching process.

[0009] Furthermore, the first slider is provided with two opposing upright plates, and the second slider is provided with a limiting block located between the two upright plates. The reset elastic element is a reset spring that abuts against the adjacent side of either upright plate and the limiting block. This structure is simple and easy to set up.

[0010] Furthermore, the piston rod end of the third telescopic cylinder is directly connected to the first punch, and the piston rod of the fourth telescopic cylinder is indirectly connected to the second punch through a lever. The middle part of the lever is hinged to one end of the clamp body base, one end of the lever is hinged to the piston rod end of the fourth telescopic cylinder, and the other end is fixedly connected to the second punch. With this configuration, the punching pliers are a combination of straight punching pliers and scissor pliers. This structure can complete the punching process without interfering with various structures on the subframe.

[0011] Furthermore, any translation mechanism also includes a second telescopic cylinder, and the sliding seat is provided with a pin hole; when the punch moves to the working position where the U-shaped cavity can be machined, the piston rod of the second telescopic cylinder can extend and engage with the pin hole to lock; this prevents the punch from moving during machining and improves machining stability.

[0012] Furthermore, the positioning structure includes several positioning pins and positioning pads.

[0013] Furthermore, the clamping structure includes several pressure plates arranged around the subframe. Each pressure plate is driven by a cylinder or hydraulic cylinder mounted on a bracket to rotate in both the forward and reverse directions, thereby clamping or loosening the subframe. This clamping structure is simple and has a good clamping effect.

[0014] Compared with the existing technology, the advantages of this utility model are: it can complete the clamping of the subframe, and simultaneously complete the punching of the crotch holes of the four U-shaped cavities on the subframe through four punching devices, resulting in shorter processing time and higher processing efficiency. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the subframe; Figure 2 for Figure 1 Enlarged view of A in the middle; Figure 3 This is a schematic diagram of the usage state of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model; Figure 5 for Figure 4 Enlarged view of B in the middle; Figure 6 for Figure 4 Enlarged view of C in the middle; Figure 7 This is a schematic diagram of the translation mechanism; Figure 8 This is an exploded view of a portion of the translation mechanism. Figure 9 This is a schematic diagram of the structure of a punching pliers; Figure 10 This is a schematic diagram of the working state of the punching pliers (after punching). Figure 11 for Figure 10 A magnified view of D.

[0016] The markings in the diagram are: 01-U-shaped cavity, 02-side plate, 1-base, 2-bracket, 3-translation mechanism, 4-punching clamp, 5-first slide rail, 6-first telescopic cylinder, 7-support block, 8-second die, 9-third telescopic cylinder, 10-fourth telescopic cylinder, 11-first punch, 12-second punch, 13-first slider, 14-second slider, 15-second slide rail, 16-vertical plate, 17-limiting block, 18-reset spring, 19-first limiting pin, 20-second limiting pin, 21-limiting hole, 22-second telescopic cylinder, 23-pin hole, 24-lever, 25-positioning pin, 26-positioning pad, 27-pressure plate, 28-base body, 29-first connecting seat, 30-second connecting seat, 31-buffer, 32-limiting component, 33-third slide rail, 34-third slider. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] A subframe punching device, such as Figures 3-11As shown, the system includes a base 1 and a bracket 2 positioned above the base 1. The bracket 2 has a positioning structure and a clamping structure on its top. The subframe can be placed on top of the bracket 2 and positioned by the positioning structure. The clamping structure is used to clamp the positioned subframe onto the bracket 2. The positioning structure is not limited in structure, as long as it can position the subframe. In this embodiment, it includes several positioning pins 25 and positioning pads 26. Specifically, it includes four positioning pins 25 and two positioning pads 26. The clamping structure is not limited in structure, as long as it can clamp the subframe onto the bracket 2. In this embodiment, the clamping structure includes several pressure plates 27 arranged around the subframe. Specifically, it includes four pressure plates 27. Any pressure plate 27 is driven by a cylinder or hydraulic cylinder on the bracket 2 to rotate forward and backward, thereby clamping or releasing the subframe. The clamping structure can be an existing lever cylinder or lever cylinder. The base 1 is equipped with four punching devices that correspond one-to-one with the U-shaped cavities 01 to be processed on the subframe. Each punching device includes a translation mechanism 3 and a punching clamp 4 located on top of the translation mechanism. The translation mechanism 3 is used to move the punching clamp 4 to the working position where the U-shaped cavity 01 can be processed, or to retract it from the working position. Each translation mechanism 3 includes a first slide rail 5 located on the base 1. A sliding seat is slidably mounted on the first slide rail 5. The sliding seat is connected to a first telescopic cylinder 6. The first telescopic cylinder 6 is used to drive the sliding seat to slide along the first slide rail 5. The punching clamp 4 is located on the sliding seat. The punching pliers 4 includes a pliers body base, on which a protruding support block 7 is formed. The support block 7 can be embedded between the two side plates 02 of the U-shaped cavity 01 to form support. The support block 7 has a first die and a second die 8 on opposite sides. The pliers body base is provided with a third telescopic cylinder 9 and a fourth telescopic cylinder 10. The piston rod of the third telescopic cylinder 9 is connected to the first punch 11, and the third telescopic cylinder 9 can drive the first punch 11 to cooperate with the first die for punching. The piston rod of the fourth telescopic cylinder 10 is connected to the second punch 12, and the fourth telescopic cylinder 10 can drive the second punch 12 to cooperate with the second die 8 for punching. The piston rod of the third telescopic cylinder 9 can be directly connected to the first punch 11 to form a straight punch clamp, or it can be indirectly connected through a lever to form a scissor punch clamp; the piston rod of the fourth telescopic cylinder 10 can be directly connected to the second punch 12 to form a straight punch clamp, or it can be indirectly connected through a lever to form a scissor punch clamp; as long as the U-shaped cavity 01 punching process can be completed without interfering with the subframe; in this embodiment, the end of the piston rod of the third telescopic cylinder 9 is directly connected to the first punch 11, and the piston rod of the fourth telescopic cylinder 10 is indirectly connected to the second punch 12 through a lever 24. The middle part of the lever 24 is hinged to one end of the clamp body base, one end of the lever 24 is hinged to the end of the piston rod of the fourth telescopic cylinder 10, and the other end is fixedly connected to the second punch 12; Specifically, the clamp base includes a base body 28 that is generally strip-shaped and a first connecting seat 29 and a second connecting seat 30 fixed on the base body 28. The cylinder body of the third telescopic cylinder 9 is fixed on the first connecting seat 29, and the cylinder body of the fourth telescopic cylinder 10 is hinged to the second connecting seat 30. The third telescopic cylinder 9 and the fourth telescopic cylinder 10 are respectively located on opposite sides of the base body 28. A support block 7 is formed on the base body 28 near one end of the lever 24, and the support block 7 protrudes towards the side where the third telescopic cylinder 9 is located. A slide rail 33 is provided on the base body 28, and the slide rail 33 is parallel to the length direction of the third telescopic cylinder 9. It also includes a slider 34, one end of which is fixedly connected to the piston rod of the third telescopic cylinder 9, and the other end is slidably mounted on the slide rail 33. The sliding base includes a first slider 13 and a second slider 14 disposed above the first slider 13. The bottom of the first slider 13 is slidably mounted on a first slide rail 5, and the top of the first slider 13 is provided with a second slide rail 15. The bottom of the second slider 14 is slidably mounted on the second slide rail 15. The first slide rail 5 and the second slide rail 15 are perpendicular to each other. A punching pliers 4 is disposed on the top of the second slider 14. The base 1 is provided with two parallel first slide rails 5, and the first slider 13 is provided with two parallel second slide rails 15. Each end of the first slide rail 5 is provided with a buffer member 31, which is flexible and used to buffer the first slider 13 at extreme positions. Each end of the first slide rail 5 is also provided with a limiting member 32, which is used to rigidly limit the first slider 13. A reset elastic element is connected between the first slider 13 and the second slider 14; the first slider 13 is provided with two opposing upright plates 16, and the second slider 14 is provided with a limiting block 17, which is located between the two upright plates 16; the reset elastic element is a reset spring 18 that abuts against the adjacent side of either upright plate 16 and the limiting block 17; each upright plate 16 is provided with a first limiting pin 19 and a second limiting pin 20; each side of the limiting block 17 is provided with a limiting hole 21; one end of each reset spring 18 is fitted with the end of the first limiting pin 19, and the other end is placed in the limiting hole 21 and abuts against the bottom surface of the limiting hole 21; when the reset spring 18 is in the reset state, there is a gap between the ends of the two second limiting pins 20 and the limiting block 17, and the second limiting pins 20 are used to limit the movement of the limiting block 17; Each translation mechanism also includes a second telescopic cylinder 22, and a pin hole 23 is provided on the sliding seat; when the punching pliers 4 moves to the working position of the U-shaped cavity 01 that can be processed, that is, when the support block 7 is embedded between the two side plates 02 of the U-shaped cavity 01, the piston rod of the second telescopic cylinder 22 can extend and engage with the pin hole 23 to lock.

[0020] In this utility model employing the aforementioned technical solution, when punching is required on the subframe, the subframe is placed on top of the bracket 2, positioned by the positioning structure, and clamped by the clamping structure to achieve stable clamping. Then, four translation mechanisms 3 synchronously drive the support blocks 7 of their respective punching pliers 4 to move into the embedded U-shaped cavity 01. The four punching pliers 4 synchronously complete the crotch hole punching. Then, the four translation mechanisms 3 synchronously drive the support blocks 7 of their respective punching pliers 4 to move out of the U-shaped cavity 01. After the clamping structure is released, the subframe can be removed. Compared with the prior art, when punching the U-shaped cavity structure on the automotive subframe, the crotch holes of each U-shaped cavity are processed sequentially by the punching pliers, which requires step-by-step punching, resulting in long processing time and low processing efficiency, this utility model can complete the clamping of the subframe and simultaneously complete the crotch hole punching of the four U-shaped cavities on the subframe using four punching devices, resulting in shorter processing time and higher processing efficiency.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A subframe punching apparatus, characterized by: The utility model provides a kind of U-shaped cavity machining device, including base (1) and support (2) arranged above base (1), support (2) top is equipped with positioning structure and compression structure;Subframe can be placed in support (2) top and is positioned by positioning structure, compression structure is used to compress the subframe after positioning on support (2);Four punching equipment corresponding to the U-shaped cavity (01) to be machined on the subframe are provided on base (1), any punching equipment includes translation mechanism (3) and punching tongs (4) arranged on the top of translation mechanism;Translation mechanism (3) is used to move punching tongs (4) to the working position of processable U-shaped cavity (01), or exit from working position;Any translation mechanism (3) includes first slide rail (5) arranged on base (1), first slide rail (5) is slidably installed with sliding seat, sliding seat is connected with first telescopic cylinder (6), and first telescopic cylinder (6) is used to drive sliding seat to slide along first slide rail (5);Punching tongs (4) are arranged on sliding seat.

2. The subframe punching apparatus of claim 1, wherein: Punching tongs (4) include body base, the protruding support block (7) is formed on body base, support block (7) can be embedded between the two side plates (02) of U-shaped cavity (01) to form support, and the opposite sides of support block (7) are respectively provided with first recess die and second recess die (8);Third telescopic cylinder (9) and fourth telescopic cylinder (10) are provided on body base, the piston rod of third telescopic cylinder (9) is connected with first punch (11), and third telescopic cylinder (9) can drive first punch (11) to punch with first recess die;The piston rod of fourth telescopic cylinder (10) is connected with second punch (12), and fourth telescopic cylinder (10) can drive second punch (12) to punch with second recess die (8).

3. The subframe punching apparatus of claim 2, wherein: Sliding seat includes first sliding block (13) and second sliding block (14) arranged above first sliding block (13), first sliding block (13) bottom is slidably installed on first slide rail (5), and first sliding block (13) top is provided with second slide rail (15), and second sliding block (14) bottom is slidably installed on second slide rail (15), and first slide rail (5) and second slide rail (15) are perpendicular to each other, and punching tongs (4) are arranged on the top of second sliding block (14).

4. The subframe punching apparatus of claim 3, wherein: First sliding block (13) and second sliding block (14) are connected with reset elastic member.

5. The subframe punching apparatus of claim 4, wherein: First sliding block (13) is provided with the opposite two vertical plates (16), and second sliding block (14) is provided with limiting block (17), and limiting block (17) is arranged between the two vertical plates (16), and reset elastic member is reset spring (18) abutting between the adjacent sides of any vertical plate (16) and limiting block (17).

6. The subframe punching apparatus of claim 2, wherein: The end of the piston rod of third telescopic cylinder (9) is directly connected with first punch (11), and the piston rod of fourth telescopic cylinder (10) is indirectly connected with second punch (12) through a lever (24), the middle of lever (24) is hinged with one end of body base, one end of lever (24) is hinged with the end of the piston rod of fourth telescopic cylinder (10), and the other end is fixedly connected with second punch (12).

7. The subframe punching apparatus of claim 1, wherein: Any one of the translation mechanism further comprises a second telescopic cylinder (22), and the sliding seat is provided with a pin hole (23); when the hole punching pliers (4) moves to the working position of the processable U-shaped cavity (01), the piston rod of the second telescopic cylinder (22) can be extended to cooperate with the pin hole (23) to be locked.

8. The subframe punching apparatus of claim 1, wherein: The positioning structure comprises a plurality of positioning pins (25) and positioning pads (26).

9. The subframe punching apparatus of claim 1, wherein: The pressing structure comprises a plurality of pressing plates (27) arranged around the auxiliary frame, any one of the pressing plates (27) is driven to turn forward and reverse by the air cylinder or oil cylinder arranged on the support (2), thereby realizing the pressing or loosening of the auxiliary frame.

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