Precise leather punching device for automobile production

Abstract

The invention discloses a leather precise punching device for automobile production, and relates to the technical field of leather punching, the leather precise punching device comprises a supporting assembly and a rack, a hydraulic punching driver is arranged at the top of the rack, a mounting frame is fixed to the output end of the hydraulic punching driver, a machining table is fixed to the top of the rack, and a through hole is formed in the top of the machining table; and the processing assembly is arranged on the processing table and comprises an air injection piece arranged on the mounting frame and a sleeve shell fixed in the mounting frame. The leather punching device has the beneficial effects that through the arrangement of the processing assembly, the leather punching device can move up and down on the mounting frame, in the leather punching process through the action of the punching head, the industrial air bag is repeatedly compressed and recovered, chips are concentrated through flowing air, the compressing piece is matched, the compressing and discharging operation is automatically conducted after multiple times of punching, the overall operation is rapid and convenient, and the working efficiency is improved. And scattering and blocking of chippings are avoided, and precise leather processing is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of leather punching, in particular to a leather precision punching device for automobile production. Background Art

[0002] Automotive leather is an important material in automotive interiors and is widely used in seats, steering wheels, door panels and other parts. In order to improve the breathability, anti-slip properties and aesthetics of the leather, and enhance driving comfort and interior texture, punching devices are used for processing, among which mechanical stamping punching is a commonly used processing method.

[0003] The punching device in the prior art uses the crankshaft rotation radius to achieve mechanical reciprocating cycle motion to form a punching function. When the punching piece penetrates the leather to form small holes, a large amount of fine debris will be generated. As the punching piece continues to move up and down, the debris is scattered and easily adheres to the leather surface, affecting the subsequent punching accuracy and affecting the overall quality of the leather. Summary of the invention

[0004] In view of the above problems existing in the existing leather precision punching device for automobile production, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that in the punching device in the prior art, as the punching piece continues to move up and down, debris is scattered and easily adheres to the leather surface, affecting the subsequent punching accuracy and affecting the overall quality of the leather.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a leather precision punching device for automobile production, comprising: A support assembly includes a frame, a hydraulic punching driver is arranged on the top of the frame, a mounting frame is fixed to the output end of the hydraulic punching driver, a processing table is fixed to the top of the frame, and a through hole is opened on the top of the processing table; and, A processing component is arranged on a processing table, including an injection part arranged on a mounting frame, including a sleeve fixed in the mounting frame, a punching head is fixed at the bottom of the sleeve, a transverse tube is fixed in the sleeve, an air supply pipe is connected to the bottom of the transverse tube, pressure plates are arranged on both sides of the processing table, an industrial air bag is arranged at the bottom of the pressure plate, a drainage shell is fixed at the bottom of the processing table, a back-blowing shell is fixed at the bottom of the drainage shell, an anti-blocking part is arranged on the drainage shell, a compression part is arranged on the drainage shell, including a small air bag arranged in the processing table, an electrical connection part is arranged on the top of the small air bag, an electric push rod is arranged on one side of the small air bag, a movable rod is movably connected in the drainage shell, and a bearing plate is movably connected at the bottom of the drainage shell.

[0007] As a preferred solution of the leather precision punching device for automobile production described in the present invention, the bottom of the small airbag is connected to a solenoid valve, the output end of the electric push rod is fixed with a pressure block, and the pressure block is fixed with a guide head.

[0008] As a preferred solution of the leather precision punching device for automobile production described in the present invention, the outer ring of the movable rod is provided with a guide groove, and cooperates with the guide head, a movable block is fixed at the bottom of the movable rod, and an inclined groove is provided on the movable block.

[0009] As a preferred solution of the leather precision punching device for automobile production described in the present invention, a torsion spring is sleeved on the bearing plate, one end of the torsion spring is fixed to the bearing plate, and the other end of the torsion spring is fixed to the drainage shell.

[0010] As a preferred solution of the leather precision punching device for automobile production described in the present invention, the anti-blocking component includes a filter screen fixed on the drainage shell, an air scoop is provided on one side of the filter screen, a cross bar is movably connected at the center of the filter screen, a turbine is fixed on the cross bar, and a cleaning brush is fixed on the outer ring of the cross bar.

[0011] As a preferred solution of the leather precision punching device for automobile production described in the present invention, the turbine is located in the air duct, the cleaning brush is in sliding contact with the filter, and the end of the air duct away from the filter is fixed on the industrial airbag.

[0012] As a preferred solution of the leather precision punching device for automobile production described in the present invention, wherein: both ends of the industrial airbag are sleeved with a first one-way valve, and the outer end of the industrial airbag is connected to a four-way pipe.

[0013] As a preferred solution of the leather precision punching device for automobile production described in the present invention, wherein: the punching head cooperates with the through hole, and the bottom end of the air supply pipe extends into the punching head.

[0014] As a preferred solution of the leather precision punching device for automobile production described in the present invention, a displacement frame is fixed on the mounting frame, and the bottom end of the displacement frame is fixed to the top of the pressing plate.

[0015] As a preferred embodiment of the leather precision punching device for automobile production described in the present invention, a drainage groove is provided in the drainage shell, air holes are provided on the top of the back-blowing shell and the bottom of the drainage shell, and a storage groove is provided in the drainage shell.

[0016] The beneficial effects of the present invention are as follows: through the setting of the processing component, it can move up and down on the mounting frame. During the process of the punching head punching holes in the leather, the industrial airbag is repeatedly compressed and restored, and the flowing gas is used to concentrate the debris. In conjunction with the compression part, the compression and discharge operation is automatically performed after multiple punchings. The overall operation is quick and convenient, avoiding scattered debris and blockage, which is conducive to the precise processing of leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] Figure 1 Schematic diagram of a device for precisely punching holes in leather for automotive production.

[0019] Figure 2 Cross-section of a device for precision perforating leather for automotive production.

[0020] Figure 3 A partial structural diagram of a device for precisely punching holes in leather for automotive production.

[0021] Figure 4 Cross-section of a processing table for precision perforating leather for automotive production.

[0022] Figure 5 A partial structural diagram of the processing components of a device for precision perforating leather for automotive production.

[0023] Figure 6 Precision perforation device for leather used in automotive production Figure 5 Enlarged view of point A in the middle.

[0024] Figure 7 A partial structural cross-sectional view of a device for precision leather punching used in automobile production.

[0025] Figure 8 Precision perforation device for leather used in automotive production Figure 7 Enlarged view of point B in the middle.

[0026] Fig. 9 Schematic diagram of the compression component structure of the device for precision perforating leather for automotive production.

[0027] Fig.10 Precision perforation device for leather used in automotive production Fig. 9 Enlarged view of point C in the middle.

[0028] Fig.11Industrial airbags, blowback shells, cross tubes and small airbag installation structure diagrams for leather precision punching devices for automobile production.

[0029] In the figure: 100, support assembly; 101, frame; 102, hydraulic punching driver; 102a, mounting frame; 103, processing table; 103a, through hole; 200, processing assembly; 201, jet component; 201a, sleeve shell; 201b, punching head; 201c, cross pipe; 201d, air pipe; 202, displacement frame; 203, pressing plate; 204, industrial airbag; 204a, four-way pipe; 204b, first one-way valve; 205, drainage shell; 205a, drainage groove; 205b, storage groove; 206, backblowing shell; 206a, air hole; 207, anti-blocking part; 207a, filter; 207a-1, cross bar; 207a-1a, turbine; 207a-1b, cleaning brush; 207b, air scoop; 208, compression part; 208a, small air bag; 208a-1, power connection part; 208a-2, solenoid valve; 208b, electric push rod; 208b-1, pressure block; 208b-2, guide head; 208c, movable rod; 208c-1, guide groove; 208c-2, movable block; 208c-3, inclined groove; 208d, bearing plate; 208d-1, torsion spring. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0033] Reference Figure 1 and Figure 2, which is the first embodiment of the present invention, provides a precise leather punching device for automobile production, which includes a supporting component 100 and a processing component 200. Through the setting of the processing component 200, it is possible to use flowing gas to concentrate debris during the leather punching process, and automatically perform compression and discharge operations after multiple punchings. The overall operation is quick and convenient, avoiding scattered debris and blockage, which is conducive to precise leather processing.

[0034] Specifically, the support assembly 100 includes a frame 101, a hydraulic punching driver 102 is arranged on the top of the frame 101, a mounting frame 102a is fixed to the output end of the hydraulic punching driver 102, a processing table 103 is fixed on the top of the frame 101, and a through hole 103a is opened on the top of the processing table 103.

[0035] The hydraulic punching driver 102 is a transmission system in a mechanical punching machine, including existing structures such as a driving shaft, a crankshaft, a rocker, and a connecting rod. It realizes reciprocating motion through mechanical force and drives the punching head to complete the punching. The working principle of this part is all existing technology, which can be clearly understood by technicians in this field and will not be elaborated here.

[0036] Specifically, the processing assembly 200 is arranged on the processing table 103, including a jetting member 201 arranged on the mounting frame 102a, including a casing 201a fixed in the mounting frame 102a, a punching head 201b fixed at the bottom of the casing 201a, a transverse pipe 201c fixed in the casing 201a, and a gas delivery pipe 201d connected to the bottom of the transverse pipe 201c, a pressing plate 203 is arranged on both sides of the processing table 103, an industrial air bag 204 is arranged at the bottom of the pressing plate 203, and a A drainage shell 205, a back-blowing shell 206 is fixed at the bottom of the drainage shell 205, an anti-blocking component 207 is arranged on the drainage shell 205, a compression component 208 is arranged on the drainage shell 205, including a small air bag 208a arranged in the processing table 103, a power connection component 208a-1 is arranged on the top of the small air bag 208a, an electric push rod 208b is arranged on one side of the small air bag 208a, a movable rod 208c is movably connected in the drainage shell 205, and a bearing plate 208d is movably connected to the bottom of the drainage shell 205.

[0037] The number of the punching heads 201b is the same as that of the through holes 103a, and the two are in an aligned state. The pressing plate 203 is located directly above the industrial airbag 204. When the pressing plate 203 moves downward, the industrial airbag 204 can be squeezed.

[0038] By providing the anti-blocking member 207, debris in the drainage housing 205 can be intercepted and an auxiliary shifting operation can be performed, thus having an anti-blocking characteristic.

[0039] The electrical connection member 208a-1 is composed of two electrode sheets, one of which is fixed on the small airbag 208a, and the other electrode sheet is fixed in the processing table 103, as shown in the accompanying drawings of the specification. Figure 8 As shown, when the two electrode sheets are in contact, the electric push rod 208b will be energized to complete an extension and retraction operation. This type of operation is recorded as the electric push rod 208b completing a stroke. Example 2

[0040] Reference Figure 2 to Figure 11 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0041] Specifically, the bottom of the small airbag 208a is connected to a solenoid valve 208a-2, a pressure block 208b-1 is fixed to the output end of the electric push rod 208b, and a guide head 208b-2 is fixed to the pressure block 208b-1.

[0042] The bottom end of the solenoid valve 208a - 2 passes through the processing table 103 and extends into the drainage shell 205 . When the electrical connection piece 208a - 1 is connected, the solenoid valve 208a - 2 is energized and automatically opens, so that the gas in the small airbag 208a can be naturally discharged into the drainage shell 205 .

[0043] The top of the pressing block 208b-1 is inclined, as shown in the accompanying drawings of the specification. Figure 8 As shown, it can play a role in assisting drainage and preventing debris from being deposited on the pressing block 208b-1. Similarly, the side of the drainage shell 205 is also inclined, as shown in the accompanying drawings of the specification. Figure 6 As shown, the accumulation of debris can be effectively avoided.

[0044] The outer ring of the movable rod 208c is provided with a guide groove 208c-1, which cooperates with the guide head 208b-2. A movable block 208c-2 is fixed to the bottom of the movable rod 208c, and an inclined groove 208c-3 is provided on the movable block 208c-2.

[0045] The end of the guide head 208b-2 away from the pressure block 208b-1 is spherical in design to reduce the friction force in contact with the guide groove 208c-1, so that when the guide head 208b-2 moves downward, it can cooperate with the guide groove 208c-1 to guide the movable rod 208c to rotate well.

[0046] By setting the inclined groove 208c-3, the movable block 208c-2 can be rotated so that when the inclined groove 208c-3 contacts the supporting plate 208d, the supporting plate 208d can be squeezed to rotate upward and close.

[0047] A torsion spring 208d - 1 is sleeved on the bearing plate 208d , one end of the torsion spring 208d - 1 is fixed on the bearing plate 208d , and the other end of the torsion spring 208d - 1 is fixed on the drainage shell 205 .

[0048] Through the setting of the torsion spring 208d-1, torsion can be provided for the bearing plate 208d, and when there is no external force, the bearing plate 208d can be maintained in an inclined downward state, at this time, the compressed debris cake can slide and discharge.

[0049] The anti-blocking member 207 includes a filter screen 207a fixed on the drainage shell 205, an air guiding hopper 207b is arranged on one side of the filter screen 207a, a cross bar 207a-1 is movably connected at the center of the filter screen 207a, a turbine 207a-1a is fixed on the cross bar 207a-1, and a cleaning brush 207a-1b is fixed on the outer ring of the cross bar 207a-1.

[0050] Through the setting of the filter screen 207a, debris in the drainage shell 205 can be intercepted to prevent the debris from entering the air guiding hopper 207b. Through the setting of the air guiding hopper 207b, the gas in the drainage shell 205 can be concentrated and introduced into the industrial airbag 204.

[0051] The turbine 207a-1a is located in the air guiding hopper 207b, the cleaning brush 207a-1b is in sliding contact with the filter screen 207a, the air guiding hopper 207b is fixed on the drainage shell 205, and one end of the air guiding hopper 207b far from the filter screen 207a is fixed on the industrial airbag 204.

[0052] Through the setting of the cross bar 207a-1, the turbine 207a-1a and the cleaning brush 207a-1b, when the turbine 207a-1a rotates due to the flowing gas, the cross bar 207a-1 can drive the cleaning brush 207a-1b to rotate, thereby brushing the filter screen 207a to prevent blockage, and avoiding the debris from being concentrated and attached to the filter screen 207a due to the influence of the air flow.

[0053] Both ends of the industrial airbag 204 are sleeved with first one-way valves 204b, and the outer end of the industrial airbag 204 is communicated with a four-way pipe 204a.

[0054] The flow direction of one of the first one-way valves 204b is from the drainage shell 205 to the industrial airbag 204, and the flow direction of the other first one-way valve 204b is from the industrial airbag 204 to the four-way pipe 204a.

[0055] As shown in the attached drawings of the specification Fig.11 As shown, the four-way pipe 204a is communicated with the backwashing shell 206, the four-way pipe 204a is communicated with the small airbag 208a, and the four-way pipe 204a is communicated with the horizontal pipe 201c through pipelines, and gas flow regulating valves and second one-way valves are arranged on the pipelines.

[0056] The second one-way valve is used to ensure the stable and unidirectional transmission of gas, and transmit from the industrial airbag 204 to the backwashing shell 206, the small airbag 208a and the horizontal pipe 201c.

[0057] The setting of the gas flow regulating valve is used to configure the gas transmission ratio, so that after the industrial airbag 204 is compressed multiple times, the small airbag 208a can be fully expanded only after the amount of gas entering the small airbag 208a reaches the standard, thereby achieving the connection of the electrical connection part 208a-1.

[0058] The punching head 201b cooperates with the through hole 103a, and the bottom end of the gas delivery pipe 201d extends into the punching head 201b.

[0059] By providing the transverse pipe 201c and the gas delivery pipe 201d, the gas introduced into the transverse pipe 201c can be evenly diverted to the coring head 201b, thereby recoil-flushing the residual debris in the coring head 201b.

[0060] A displacement frame 202 is fixed on the mounting frame 102 a , and a bottom end of the displacement frame 202 is fixed to the top of the pressing plate 203 .

[0061] By setting the displacement frame 202, the mounting frame 102a can be connected to the pressing plate 203. When the mounting frame 102a moves up and down, the pressing plate 203 moves up and down synchronously.

[0062] A drainage groove 205 a is provided in the drainage shell 205 , and air holes 206 a are provided at the top of the back-blowing shell 206 and the bottom of the drainage shell 205 .

[0063] By setting the drainage groove 205a, an inclined surface can be formed to cooperate with gravity to help guide the debris to slide from the center to both sides.

[0064] The inner diameter of the air hole 206a is much smaller than the inner diameter of the coring head 201b. Through the setting of the air hole 206a, when the gas is transmitted to the drainage shell 205 through the backblowing shell 206, the air hole 206a provides buoyancy for the debris remaining in the drainage shell 205, which is beneficial to the transmission of smaller debris and avoids the debris from accumulating on the drainage groove 205a.

[0065] A receiving groove 205b is defined in the drainage shell 205, and a movable rod 208c is movably connected to the receiving groove 205b.

[0066] The guide groove 208c-1 includes a spiral groove and a vertical groove. The bottom end of the spiral groove is connected to the top end of the vertical groove, and both are matched with the guide head 208b-2. With this design, when the guide head 208b-2 slides in the spiral groove, the movable rod 208c can be linked to rotate. When the guide head 208b-2 slides in the vertical groove, the movable rod 208c will not rotate.

[0067] When in use, the leather is transferred on the processing table 103, and the hydraulic punching driver 102 drives the mounting frame 102a to repeatedly move up and down, cooperating with the punching head 201b and the through hole 103a to complete the punching process of the leather, and the lower end of the punching head 201b passes through the through hole 103a and is placed in the drainage shell 205.

[0068] When the punching head 201b moves downward to punch holes in the leather, the downward movement of the mounting frame 102a will also drive the displacement frame 202 and the pressing plate 203 to move downward, squeezing the industrial airbag 204 to produce elastic deformation, so that the gas in the industrial airbag 204 is diverted and transmitted through the four-way pipe 204a.

[0069] A large amount of airflow is transmitted to the horizontal pipe 201c, guided by the air supply pipe 201d, and placed in the punching head 201b, so as to spray the debris generated by the punching of the punching head 201b, so that the debris enters the drainage shell 205. Moreover, since the punching head 201b is hollow, even if some debris is stuck in the punching head 201b, the debris can still be sprayed into the drainage shell 205 through the airflow.

[0070] The middle airflow is transmitted to the back-blowing shell 206 and input into the drainage shell 205 through the air hole 206 a, so as to ensure that the debris can be well collected on both sides of the drainage shell 205 .

[0071] The small airflow is transmitted to the small airbag 208a, causing the small airbag 208a to expand to a certain volume.

[0072] As the mounting frame 102a moves upward, the jet element 201 and the pressure plate 203 both move upward and reset, and the industrial airbag 204 recovers. The gas in the drainage shell 205 passes through the filter screen 207a and is collected into the industrial airbag 204 again through the air duct 207b.

[0073] In this cycle, as the mounting frame 102a and the punching head 201b repeatedly move up and down, multiple holes are punched on the car leather, the amount of debris temporarily stored in the drainage shell 205 increases, and the small airbag 208a will gradually expand until the electrical connection 208a-1 is connected.

[0074] When the power connection part 208a-1 is connected, the electric push rod 208b is energized to perform a telescopic stroke operation. When extended, it drives the pressure block 208b-1 to move downward, and cooperates with the supporting plate 208d to compress the debris on the side of the drainage shell 205. At the same time, the guide head 208b-2 slides in the spiral groove in the guide groove 208c-1, driving the movable rod 208c to rotate. After the initial compression, the movable rod 208c will drive the movable block 208c-2 to rotate and separate from the supporting plate 208d. At this time, under the torque provided by the torsion spring 208d-1, the supporting plate 208d will naturally rotate downward by a certain angle.

[0075] As the electric push rod 208b continues to extend, the pressure block 208b-1 and the guide head 208b-2 move further downward. At this time, the guide head 208b-2 will be placed in the upper vertical groove of the guide groove 208c-1. The movable rod 208c will not rotate, and is used to maintain the inclined groove 208c-3 and the supporting plate 208d in contact. As the pressure block 208b-1 moves downward, it will push the compressed debris cake to move downward, and the supporting plate 208d will further open, and the debris cake will be discharged between the supporting plate 208d and the drainage shell 205.

[0076] After the discharge is completed, the electric push rod 208b retracts and the supporting plate 208d is reset under the action of the torsion spring 208d-1, so that the supporting plate 208d contacts the inclined groove 208c-3. With the cooperation of the guide head 208b-2 and the guide groove 208c-1, the movable rod 208c will also rotate and reset, contact the supporting plate 208d through the inclined groove 208c-3, and squeeze the supporting plate 208d to further rotate upward and fit with the drainage shell 205, thereby ensuring the overall sealing of the drainage shell 205 and preventing the discharge of debris and gas.

[0077] In this cycle, after punching holes in the automobile leather for multiple times, the temporarily stored debris in the drainage shell 205 can be automatically compressed and discharged, which is more in line with actual processing needs. Example 3

[0078] Reference Figure 1-Figure 10 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0079] Specifically, a small belt conveyor is installed on the top of the frame 101 for conveying materials, as shown in the accompanying drawings of the specification. Figure 1 shown.

[0080] In actual application, a collection frame is fixed at the bottom of the processing table 103 and outside the drainage shell 205 to collect the waste compressed by the pressing block 208b-1, so as to facilitate subsequent centralized processing.

[0081] The small airbag 208a is a small pipe water plugging airbag, which is characterized by being reusable and having a fixed volume after inflation, that is, after the small airbag 208a is inflated multiple times, its expanded volume is fixed to ensure that the electrical connection piece 208a-1 can be well connected.

[0082] Industrial airbag 204 is an airbag for automobile production. It is made of environmentally friendly TPU material and has a design life of more than 100,000 times of inflation and deflation, ensuring its durability.

[0083] The air holes 206 a are arranged to be inclined outwards, and when transmitting gas to the drainage shell 205 , they can exert upward buoyancy and outward blowing force on the debris, which is conducive to the debris gathering to both sides of the drainage shell 205 .

[0084] When the gas in the drainage shell 205 gathers in the industrial air bag 204, it also pushes the debris to move to the side.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A leather precision punching device for automobile production, characterized in that: include, A support assembly (100) comprises a frame (101), a hydraulic punching driver (102) being arranged on the top of the frame (101), a mounting frame (102a) being fixed to the output end of the hydraulic punching driver (102), a processing table (103) being fixed to the top of the frame (101), and a through hole (103a) being provided on the top of the processing table (103); and, The processing assembly (200) is arranged on a processing table (103), comprising an injection component (201) arranged on a mounting frame (102a), comprising a casing (201a) fixed in the mounting frame (102a), a punching head (201b) fixed at the bottom of the casing (201a), a transverse tube (201c) fixed in the casing (201a), pressing plates (203) arranged on both sides of the processing table (103), and a working The processing platform (103) is provided with an air bag (204), a drainage shell (205) is fixed at the bottom of the drainage shell (205), a back-blowing shell (206) is fixed at the bottom of the drainage shell (205), a compression member (208) is arranged on the drainage shell (205), and includes a small air bag (208a) arranged in the processing platform (103), an electric push rod (208b) is arranged on one side of the small air bag (208a), and a bearing plate (208d) is movably connected to the bottom of the drainage shell (205).

2. The leather precision punching device for automobile production according to claim 1, characterized in that: The top of the small airbag (208a) is provided with an electrical connection component (208a-1), the bottom of the small airbag (208a) is connected to a solenoid valve (208a-2), a pressure block (208b-1) is fixed to the output end of the electric push rod (208b), and a guide head (208b-2) is fixed to the pressure block (208b-1).

3. The leather precision punching device for automobile production according to claim 2, characterized in that: A movable rod (208c) is movably connected inside the drainage shell (205); a guide groove (208c-1) is provided on the outer ring of the movable rod (208c) and cooperates with the guide head (208b-2); a movable block (208c-2) is fixed to the bottom of the movable rod (208c); and an inclined groove (208c-3) is provided on the movable block (208c-2).

4. The leather precision punching device for automobile production according to claim 3, characterized in that: A torsion spring (208d-1) is sleeved on the bearing plate (208d), one end of the torsion spring (208d-1) is fixed on the bearing plate (208d), and the other end of the torsion spring (208d-1) is fixed on the drainage shell (205).

5. The leather precision punching device for automobile production according to claim 1, characterized in that: An anti-blocking component (207) is provided on the drainage shell (205), and the anti-blocking component (207) comprises a filter screen (207a) fixed on the drainage shell (205), an air bleed hopper (207b) is provided on one side of the filter screen (207a), a cross bar (207a-1) is movably connected at the center of the filter screen (207a), a turbine (207a-1a) is fixed on the cross bar (207a-1), and a cleaning brush (207a-1b) is fixed on the outer ring of the cross bar (207a-1).

6. The leather precision punching device for automobile production according to claim 5, characterized in that: The turbine (207a-1a) is located in the air bleed hopper (207b), the cleaning brush (207a-1b) is in sliding contact with the filter screen (207a), and one end of the air bleed hopper (207b) away from the filter screen (207a) is fixed on the industrial air bag (204).

7. The leather precision punching device for automobile production according to claim 1, characterized in that: Both ends of the industrial airbag (204) are sleeved with a first one-way valve (204b), and the outer end of the industrial airbag (204) is connected to a four-way pipe (204a).

8. The leather precision punching device for automobile production according to claim 1, characterized in that: The punching head (201b) cooperates with the through hole (103a); the bottom of the transverse tube (201c) is connected to an air supply pipe (201d); and the bottom end of the air supply pipe (201d) extends into the punching head (201b).

9. The leather precision punching device for automobile production according to claim 1, characterized in that: A displacement frame (202) is fixed on the mounting frame (102a), and the bottom end of the displacement frame (202) is fixed to the top of the pressing plate (203).

10. The leather precision punching device for automobile production according to claim 1, characterized in that: A drainage groove (205a) is provided in the drainage shell (205), air holes (206a) are provided at the top of the back-blowing shell (206) and the bottom of the drainage shell (205), and a storage groove (205b) is provided in the drainage shell (205).

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