Rear door thin beam notching machine

Abstract

The utility model relates to the field of sheet metal part notching equipment, and provides a rear door thin beam notching machine which comprises an installation platen arranged on a control cabinet, and rear door thin beam notching assemblies are arranged on the control cabinet in a central symmetry mode. The rear door thin beam notching assembly comprises a supporting assembly, an auxiliary supporting piece, an induction supporting assembly, a side positioning assembly, an edge pressing assembly, a notching assembly and a notching support, the supporting assembly, the auxiliary supporting piece and the induction supporting assembly are sequentially arranged on the mounting table plate, and the supporting assembly, the auxiliary supporting piece and the induction supporting assembly are used for supporting a rear door thin beam. The side positioning assembly is arranged on one side of the supporting assembly and used in cooperation with the supporting assembly, the edge pressing assembly and the notching assembly are arranged above the supporting assembly and fixedly installed on the notching support, the edge pressing assembly is used for pressing the rear door thin beam, and the notching assembly is used for notching the rear door thin beam. Supporting is stable, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the field of sheet metal punching equipment, in particular to a rear door thin beam punching machine. Background Art

[0002] With the rapid advancement of technology, punching machines are increasingly used in the sheet metal processing industry. In the production process of automotive sheet metal parts, the use of punching dies is also becoming increasingly common.

[0003] As disclosed in application number: CN201810564035.6, a punching die of a punching and shearing machine includes a base, a positioning die, a shearing die and a punching die. The positioning die and the shearing die are installed in combination to form a punching mother die. The positioning die and the shearing die are fixedly installed on the base, and the punching die is installed on the punching mother die in a cooperative manner. A guide groove is provided on the positioning die; a cutting groove is provided on the shearing die, and a feed through hole is provided along the cutting groove; the shearing die is fixedly installed on the positioning die, and the guide groove of the positioning die and the cutting groove of the shearing die are arranged in abutment with each other to form a punching die; the punching die is a columnar structure, a mounting head is provided on the top, and an arc-shaped cutting knife is fixedly provided on the side, the punching die is installed in cooperation along the guide groove of the positioning die, and the arc-shaped cutting knife is installed in cooperation along the cutting groove of the shearing die; the arc-shaped cutting knife of the punching die has an arc-shaped structure in cross section, and blades are provided at the upper and lower ends along the vertical direction respectively, the cutting edge is a conical structure, and the cutting edge angle is degrees.

[0004] Currently, the thin beam of the rear door needs to be designed with a punching notch. However, the thin beam of the rear door is long in shape, has a poor supporting structure, and a complex structure. The cost of using a mold for punching design is high, and the punching effect is poor. Utility Model Content

[0005] In order to solve the problem that the current thin beam of the rear door needs to be punched out, however, the thin beam of the rear door has a long shape, a poor supporting structure, a complex structure, a high cost for punching out using a mold, and a poor punching effect, the utility model provides a thin beam punching machine for the rear door to solve the problem.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A rear door thin beam punching machine comprises: a mounting platen, the mounting platen is arranged on a control cabinet, a rear door thin beam punching assembly is centrally symmetrically arranged on the control cabinet, the rear door thin beam punching assembly comprises: a support assembly, an auxiliary support member, an induction support assembly, a side positioning assembly, a pressure edge assembly, a punching assembly and a punching bracket, the support assembly, the auxiliary support member and the induction support assembly are arranged on the mounting platen in sequence, the support assembly, the auxiliary support member and the induction support assembly are used to support the rear door thin beam, the side positioning assembly is arranged on one side of the support assembly and is used in conjunction with the support assembly to clamp and position the rear door thin beam, the pressure edge assembly and the punching assembly are arranged above the support assembly, the pressure edge assembly and the punching assembly are fixedly mounted on the punching bracket, the pressure edge assembly is used to press the rear door thin beam, and the punching assembly is used to punch the rear door thin beam.

[0008] Preferably, the sensing support assembly includes: a sensing support seat, a sensing block, a sensing slide rod, a sensing sleeve and a sensor. The sensing support seat is arranged on a mounting plate, one end of the sensing block extends out of the sensing support seat to sense whether the rear door thin beam is loaded, the other end of the sensing block is fixedly connected to one end of the sensing slide rod, the sensing sleeve is fixedly installed on the sensing support seat, the sensing slide rod is slidably connected to the sensing sleeve, the other end of the sensing slide rod is docked with a sensing end of a sensor fixedly installed on the sensing support seat, and the sensor is used to detect whether the sensing slide rod is displaced.

[0009] Preferably, the auxiliary support member includes: a first auxiliary support angle plate and a second auxiliary support angle plate, the first auxiliary support angle plate is fixedly connected to the mounting plate, the second auxiliary support angle plate is fixedly mounted on the first auxiliary support angle plate, and the second auxiliary support angle plate is used to support the middle part of the rear door thin beam.

[0010] Preferably, the supporting assembly comprises: a supporting symbol block, a symbol block mounting seat and a symbol block side fixing block, the symbol block mounting seat is fixedly mounted on the mounting table, the supporting symbol block is arranged on the symbol block mounting seat, the symbol block side fixing blocks are arranged at both ends of the supporting symbol block for fixing the supporting symbol block, and a side positioning assembly is arranged on one side of the supporting symbol block.

[0011] Preferably, the side positioning assembly includes: a side positioning cylinder, a cylinder mounting plate, a cylinder top block and a side positioning plate. The side positioning cylinder is arranged on the mounting plate through the cylinder mounting plate. The output end of the side positioning cylinder is fixedly connected to the cylinder top block. A side positioning plate is arranged on the front side of the cylinder top block. The side positioning plate is used in conjunction with the supporting symbol block.

[0012] Preferably, the edge pressing assembly includes: an edge pressing fixing plate, an edge pressing plate, an edge pressing guide column and an edge pressing limit block. The edge pressing fixing plate is arranged on the punching assembly, the edge pressing guide column is slidably arranged on the edge pressing fixing plate, the lower end of the edge pressing guide column is fixedly connected to the edge pressing plate, and the upper end of the edge pressing guide column passes through the edge pressing fixing plate and is connected to the edge pressing limit block.

[0013] Preferably, the punching assembly includes: a punching movable plate, a punching guide sleeve, a punching guide column, a guide mounting seat, a punching drive cylinder, a punching knife and a punching knife fixing seat, the guide mounting seat is fixedly installed in the punching bracket, the punching guide column is arranged on the guide mounting seat, the punching guide sleeve is slidably arranged on the punching guide column, one side of the punching movable plate is fixedly connected to the punching guide sleeve, and the other side of the punching movable plate is fixedly connected to the edge pressing fixing plate, the punching drive cylinder is arranged on the upper side of the punching bracket, the output end of the punching drive cylinder is fixedly connected to the upper side of the punching movable plate, the lower side of the punching movable plate is fixedly connected to the punching knife fixing seat, the punching knife is arranged in the punching knife fixing seat, and the punching knife is used to punch the thin beam of the rear door.

[0014] The advantages of the utility model are as follows: the utility model supports the rear door thin beam at the same time by arranging a support component, an auxiliary support member, and an induction support component, so that the support is stable. During the supporting process, the rear door thin beam will not be deformed in the middle part. By symmetrically arranging two groups of rear door thin beam punching components, the working space on the installation plate can be effectively utilized to improve the production efficiency. By arranging a side positioning component, the positioning accuracy of the rear door thin beam punching can be improved. By arranging a pressure edge component, burrs or hair pulling can be prevented at the punching part. By arranging the punching component, the degree of automation can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a structural schematic diagram of the rear door thin beam punching assembly of the utility model;

[0018] Figure 3 It is a structural schematic diagram of various components on the installation platform of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the induction support assembly of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the auxiliary support member of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the support assembly of the utility model;

[0022] Figure 7 It is a structural schematic diagram of the side positioning assembly of the utility model;

[0023] Figure 8 It is a structural schematic diagram of the edge pressing assembly of the utility model;

[0024] Fig. 9 It is a structural schematic diagram of the punching assembly of the utility model;

[0025] Fig.10 It is a structural schematic diagram of a punching knife of the utility model.

[0026] Description of reference numerals:

[0027] 1. Installation table; 2. Control cabinet; 3. Rear door thin beam punching assembly; 4. Support assembly; 5. Auxiliary support; 6. Induction support assembly; 7. Side positioning assembly; 8. Edge pressing assembly; 9. Punching assembly; 10. Punching bracket; 61. Induction support seat; 62. Induction block; 63. Induction slide bar; 64. Induction sleeve; 65. Sensor; 51. First auxiliary support angle plate; 52. Second auxiliary support angle plate; 41. Support symbol block; 4 2. Symbol block mounting seat; 43. Symbol block side fixing block; 71. Side positioning cylinder; 72. Cylinder mounting plate; 73. Cylinder top block; 74. Side positioning plate; 81. Edge pressing fixing plate; 82. Edge pressing plate; 83. Edge pressing guide column; 84. Edge pressing limit block; 91. Punching moving plate; 92. Punching guide sleeve; 93. Punching guide column; 94. Guide mounting seat; 95. Punching drive cylinder; 96. Punching knife; 97. Punching knife fixing seat. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] Embodiment 1, combined with Figure 1 , Figure 2 and Figure 3 To explain:

[0032] A rear door thin beam punching machine comprises: a mounting platen 1, wherein the mounting platen 1 is arranged on a control cabinet 2, a rear door thin beam punching assembly 3 is centrally symmetrically arranged on the control cabinet 2, the rear door thin beam punching assembly 3 comprises: a support assembly 4, an auxiliary support member 5, an induction support assembly 6, a side positioning assembly 7, a pressure edge assembly 8, a punching assembly 9 and a punching bracket 10, the support assembly 4, the auxiliary support member 5 and the induction support assembly 6 are arranged on the mounting platen 1 in sequence, the support assembly 4, the auxiliary support member 5 and the induction support assembly 6 are used to support the rear door thin beam, the side positioning assembly 7 is arranged on one side of the support assembly 4 and is used in conjunction with the support assembly 4, the pressure edge assembly 8 and the punching assembly 9 are arranged above the support assembly 4, the pressure edge assembly 8 and the punching assembly 9 are fixedly mounted on the punching bracket 10, and the pressure edge assembly 8 is used to press the rear door thin beam.

[0033] By setting the support component 4, the auxiliary support part 5 and the induction support component 6, the rear door thin beam is supported at the same time, so that the support is stable. During the support process, the rear door thin beam will not be deformed in the middle. By symmetrically setting two groups of rear door thin beam punching components 3, the working space on the installation platform 1 can be effectively utilized to improve the production efficiency. By setting the side positioning component 7, the positioning accuracy of the rear door thin beam punching can be improved. By setting the edge pressing component 8, burrs or hair pulling can be prevented at the punching part. By setting the punching component 9, the degree of automation can be improved.

[0034] Embodiment 2, based on embodiment 1, combined with Figure 4 To explain:

[0035] The sensing support assembly 6 includes: a sensing support seat 61, a sensing block 62, a sensing slide bar 63, a sensing sleeve 64 and a sensor 65. The sensing support seat 61 is fixedly installed on the mounting plate 1 by screws. One end of the sensing block 62 extends out of the sensing support seat 61 to sense whether the thin beam of the rear door is loaded. The other end of the sensing block 62 is fixedly connected to one end of the sensing slide bar 63 by screws. The sensing sleeve 64 is fixedly installed on the lower side of the sensing support seat 61 by screws. The sensing slide bar 63 is slidably connected to the sensing sleeve 64. The other end of the sensing slide bar 63 is connected to the sensing end of the sensor 65 fixedly installed on the sensing support seat 61. The sensor 65 is fixedly connected to the sensing support seat 61 through a mounting plate. The sensor 65 is used to detect whether the sensing slide bar 63 is displaced.

[0036] When in use, the end of the thin beam of the rear door touches the upper end of the sensing block 62 and pushes the sensing block 62 to move, so that the sensing block 62 drives the sensing slide bar 63 to slide in the sensing sleeve 64. The sensor 65 is used to sense whether the sensing slide bar 63 moves. The sensor 65 uses a proximity sensor.

[0037] Embodiment 3, based on embodiment 2, combined with Figure 5 To explain:

[0038] The auxiliary support member 5 includes: a first auxiliary support angle plate 51 and a second auxiliary support angle plate 52. The first auxiliary support angle plate 51 is fixedly connected to the mounting platform 1 by screws, and the second auxiliary support angle plate 52 is fixedly installed on the first auxiliary support angle plate 51 by screws. The second auxiliary support angle plate 52 is used to support the middle part of the rear door thin beam.

[0039] When in use, the first auxiliary support angle plate 51 plays a role of stable support, and the second auxiliary support angle plate 52 is connected to the first auxiliary support angle plate 51 through the oblong hole, thereby facilitating the adjustment of the support height of the second auxiliary support angle plate 52.

[0040] Embodiment 4, based on embodiment 3, combined with Figure 6 To explain:

[0041] The support assembly 4 includes: a support symbol block 41, a symbol block mounting seat 42 and a symbol block side fixing block 43. The symbol block mounting seat 42 is fixedly installed on the mounting platform 1. The support symbol block 41 is arranged on the symbol block mounting seat 42. The symbol block side fixing blocks 43 are arranged at both ends of the support symbol block 41 for fixing the support symbol block 41. A side positioning assembly 7 is arranged on one side of the support symbol block 41.

[0042] The supporting symbol block 41 is fixedly connected to the symbol block mounting seat 42 by screws, and the symbol block mounting seat 42 is fixedly connected to the mounting platform 1 by the guide mounting seat 94. The stability of the supporting symbol block 41 can be improved by the symbol block mounting seat 42 and the symbol block side fixing block 43.

[0043] Embodiment 5, based on embodiment 4, combined with Figure 7 To explain:

[0044] The side positioning assembly 7 includes: a side positioning cylinder 71, a cylinder mounting plate 72, a cylinder top block 73 and a side positioning plate 74. The side positioning cylinder 71 is arranged on the mounting platform 1 through the cylinder mounting plate 72. The cylinder mounting plate 72 is fixedly connected to the mounting platform 1 through screws. The output end of the side positioning cylinder 71 is fixedly connected to the cylinder top block 73. A side positioning plate 74 is arranged on the front side of the cylinder top block 73. The side positioning plate 74 is fixedly connected to the cylinder top block 73 through screws. The side positioning plate 74 is used in conjunction with the support symbol block 41.

[0045] With such arrangement, the cylinder mounting plate 72 serves to stabilize the side positioning cylinder 71 , and the side positioning cylinder 71 is used to push the side positioning plate 74 to move.

[0046] Embodiment 6, based on embodiment 5, combined with Figure 8 To explain:

[0047] The edge pressing assembly 8 includes: an edge pressing fixing plate 81, an edge pressing plate 82, an edge pressing guide column 83 and an edge pressing limit block 84. The edge pressing fixing plate 81 is arranged on the punching assembly 9, and the edge pressing guide column 83 is slidably arranged on the edge pressing fixing plate 81. The lower end of the edge pressing guide column 83 is fixedly connected to the edge pressing plate 82, and the upper end of the edge pressing guide column 83 passes through the edge pressing fixing plate 81 and is connected to the edge pressing limit block 84.

[0048] With such arrangement, when in use, the edge pressing plate 82 first contacts the thin beam of the rear door, and as the punching drive cylinder 95 continues to move downward, the edge pressing plate 82 moves upward relative to the edge pressing fixing plate 81, playing the role of a pre-pressing member.

[0049] Embodiment 7, based on embodiment 6, combined with Fig. 9 and Fig.10 To explain:

[0050] The punching assembly 9 includes: a punching movable plate 91, a punching guide sleeve 92, a punching guide column 93, a guide mounting seat 94, a punching drive cylinder 95, a punching knife 96 and a punching knife fixing seat 97. The guide mounting seat 94 is fixedly installed in the punching bracket 10, the punching guide column 93 is arranged on the guide mounting seat 94, the punching guide sleeve 92 is slidably arranged on the punching guide column 93, one side of the punching movable plate 91 is fixedly connected to the punching guide sleeve 92, and the other side of the punching movable plate 91 is fixedly connected to the edge pressing fixing plate 81, the punching drive cylinder 95 is arranged on the upper side of the punching bracket 10, the output end of the punching drive cylinder 95 is fixedly connected to the upper side of the punching movable plate 91, the lower side of the punching movable plate 91 is fixedly connected to the punching knife fixing seat 97, the punching knife 96 is arranged in the punching knife fixing seat 97, and the punching knife 96 is used to punch the thin beam of the rear door.

[0051] With such arrangement, the punching guide sleeve 92 and the punching guide column 93 provide guiding function, the punching drive cylinder 95 is the power source, the punching knife 96 is used to punch the thin beam of the rear door, and the punching knife fixing seat 97 is used to stabilize the punching knife 96. By separating the punching knife 96 and the punching knife fixing seat 97, it is convenient for later maintenance and replacement.

[0052] Working principle of the utility model: when the utility model is in use, the rear door thin beam is placed on the support assembly 4, the auxiliary support member 5 and the induction support assembly 6 by a manipulator or manually, and one end of the rear door thin beam pushes the induction block 62, so that the induction block 62 drives the induction slide rod 63 to move in the induction slide sleeve 64, and after the sensor 65 detects the movement signal of the induction slide rod 63, the side positioning cylinder 71 is controlled to start, and the side positioning cylinder 71 pushes the side positioning plate 74, so that the side positioning plate 74 and the support symbol block 41 form a stable clamping of the rear door thin beam, and then the punching drive cylinder 95 is started, driving the punching moving plate 91 to move downward, and the edge pressing plate 82 first contacts the rear door thin beam and presses the rear door thin beam, and then the punching moving plate 91 continues to move downward, and the punching knife 96 completes the punching of the rear door thin beam. The utility model has low cost, stable support and high degree of automation.

[0053] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A rear door thin beam punching machine, characterized in that: include: A mounting plate (1) is arranged on a control cabinet (2), a rear door thin beam punching assembly (3) is centrally symmetrically arranged on the control cabinet (2), the rear door thin beam punching assembly (3) comprises: a support assembly (4), an auxiliary support member (5), an inductive support assembly (6), a side positioning assembly (7), a side pressing assembly (8), a punching assembly (9) and a punching bracket (10), the support assembly (4), the auxiliary support member (5) and the inductive support assembly (6) are arranged on the mounting plate (1) in sequence, the support assembly (4), the auxiliary support member (5) and the inductive support assembly (6) are used to support the rear door thin beam, the side positioning assembly (7) is arranged on one side of the support assembly (4) and is used in conjunction with the support assembly (4), the side pressing assembly (8) and the punching assembly (9) are arranged above the support assembly (4), the side pressing assembly (8) and the punching assembly (9) are fixedly mounted on the punching bracket (10), and the side pressing assembly (8) is used to press the rear door thin beam.

2. A rear door thin beam punching machine according to claim 1, characterized in that: The sensing support assembly (6) comprises: a sensing support seat (61), a sensing block (62), a sensing slide bar (63), a sensing sleeve (64) and a sensor (65). The sensing support seat (61) is arranged on a mounting plate (1). One end of the sensing block (62) extends out of the sensing support seat (61) to sense whether the rear door thin beam is loaded. The other end of the sensing block (62) is fixedly connected to one end of the sensing slide bar (63). The sensing sleeve (64) is fixedly installed on the sensing support seat (61). The sensing slide bar (63) is slidably connected to the sensing sleeve (64). The other end of the sensing slide bar (63) is connected to the sensing end of a sensor (65) fixedly installed on the sensing support seat (61). The sensor (65) is used to detect whether the sensing slide bar (63) is displaced.

3. A rear door thin beam punching machine according to claim 1, characterized in that: The auxiliary support member (5) comprises: a first auxiliary support angle plate (51) and a second auxiliary support angle plate (52); the first auxiliary support angle plate (51) is fixedly connected to the mounting platform (1); the second auxiliary support angle plate (52) is fixedly mounted on the first auxiliary support angle plate (51); the second auxiliary support angle plate (52) is used to support the middle part of the thin beam of the rear door.

4. A rear door thin beam punching machine according to claim 1, characterized in that: The support assembly (4) comprises: a support symbol block (41), a symbol block mounting seat (42) and a symbol block side fixing block (43); the symbol block mounting seat (42) is fixedly mounted on the mounting platform (1); the support symbol block (41) is arranged on the symbol block mounting seat (42); the symbol block side fixing blocks (43) are arranged at both ends of the support symbol block (41) for fixing the support symbol block (41); and a side positioning assembly (7) is arranged on one side of the support symbol block (41).

5. A rear door thin beam punching machine according to claim 4, characterized in that: The side positioning assembly (7) comprises: a side positioning cylinder (71), a cylinder mounting plate (72), a cylinder top block (73) and a side positioning plate (74); the side positioning cylinder (71) is arranged on the mounting platform (1) via the cylinder mounting plate (72); the output end of the side positioning cylinder (71) is fixedly connected to the cylinder top block (73); a side positioning plate (74) is arranged on the front side of the cylinder top block (73); and the side positioning plate (74) is used in conjunction with the supporting symbol block (41).

6. A rear door thin beam punching machine according to claim 1, characterized in that: The edge pressing assembly (8) comprises: an edge pressing fixing plate (81), an edge pressing plate (82), an edge pressing guide column (83) and an edge pressing limit block (84); the edge pressing fixing plate (81) is arranged on the punching assembly (9); the edge pressing guide column (83) is slidably arranged on the edge pressing fixing plate (81); the lower end of the edge pressing guide column (83) is fixedly connected to the edge pressing plate (82); and the upper end of the edge pressing guide column (83) passes through the edge pressing fixing plate (81) and is connected to the edge pressing limit block (84).

7. A rear door thin beam punching machine according to claim 6, characterized in that: The punching assembly (9) comprises: a punching movable plate (91), a punching guide sleeve (92), a punching guide column (93), a guide mounting seat (94), a punching drive cylinder (95), a punching knife (96) and a punching knife fixing seat (97); the guide mounting seat (94) is fixedly mounted in the punching bracket (10); the punching guide column (93) is arranged on the guide mounting seat (94); the punching guide sleeve (92) is slidably arranged on the punching guide column (93); the punching movable plate (91) One side is fixedly connected to the punching guide sleeve (92), the other side of the punching movable plate (91) is fixedly connected to the edge pressing fixed plate (81), the punching driving cylinder (95) is arranged on the upper side of the punching bracket (10), the output end of the punching driving cylinder (95) is fixedly connected to the upper side of the punching movable plate (91), the lower side of the punching movable plate (91) is fixedly connected to the punching knife fixing seat (97), the punching knife (96) is arranged in the punching knife fixing seat (97), and the punching knife (96) is used to punch the thin beam of the rear door.

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