A method for trimming a seal lip

Abstract

The application is a kind of sealing lip cutter die cutting processing method, which is carried out by cutter die cutting device. The automobile sealing material is introduced into the cutter die cutting assembly through the feeding assembly. After the positioning assembly senses that the automobile sealing material enters the designated position, the pressing assembly presses the automobile sealing material to prevent the shape and position of the automobile sealing material from changing during the cutting process. After the pressing action is completed, the cutting driving assembly drives the cutter die cutting assembly to cut the automobile sealing material in the form of cutter. After cutting is completed, each component is reset in turn, and the automobile sealing material is taken out. The tool has long service life, the sealing lip cut is straight and flat, and no step is generated on the lip cut. The flat cut helps to improve the yield of the subsequent lip glue production process. The required complete lip cut can be obtained at one time, which shortens the production time and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of sealing component punching, and more particularly to a guillotine-type punching method for sealing component lips. Background Technology

[0002] When the lip of a seal has a long punch cut, it is generally processed by slicing or multiple-cut punching. Slicing involves first slicing the rubber with a slicing knife, and then cutting off the root connection with a cutting knife. Multiple-cut punching involves using a knife with a short blade to punch multiple times with multiple feeds to complete the punching of a long lip.

[0003] The scribing technique has the following drawbacks: When the scribing blade enters the rubber, the rubber at the end contracts before being cut. This contraction causes the cut to deviate, resulting in the cut at the end not being on a straight line with the subsequent cuts. The cut at the end appears to have taken a detour before returning to the correct path, causing the cut to be either not straight or have a "large end." Additionally, the scribing technique suffers from a relatively short blade life, especially for long cuts on thick rubber. The blade edge easily reaches its metal fatigue strength, becoming dull or chipping.

[0004] Multi-cutting technology has the following drawbacks: for example, there is a step at the joint between the first and second cuts, resulting in an uneven cut that affects aesthetics and adhesive bonding. Furthermore, multiple feeds and multiple cuts increase the production time per piece, impacting cutting efficiency and overall production efficiency. Summary of the Invention

[0005] The present invention aims to address the shortcomings of the prior art by providing a guillotine-type punching method for sealing lip edge processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for guillotine-type punching processing of a sealing component lip is provided, which employs a guillotine-type punching device. The guillotine-type punching device includes a guillotine-type punching assembly, a pressing assembly, a feeding assembly, a positioning assembly, a punching drive assembly, and a support assembly. Two sets of guillotine-type punching assemblies are mounted on the support assembly, and the two sets of guillotine-type punching assemblies share a pressing assembly. Each set of guillotine-type punching assemblies has a feeding assembly on its front side and a positioning assembly on its rear side. Each set of guillotine-type punching assemblies is connected to a punching drive assembly.

[0008] The operating steps are as follows:

[0009] The raw material for automotive seals is fed into the guillotine-type punching assembly via the feeding assembly. Once the positioning assembly senses that the raw material has entered the designated position, the pressing assembly presses the raw material to prevent changes in its shape and position during the punching process. After the pressing action is completed, the punching drive assembly drives the guillotine-type punching assembly to punch the raw material in the form of a guillotine. After the punching is completed, all components reset sequentially, and the raw material is removed.

[0010] The guillotine-type punching assembly includes a vertical plate fixed on a support assembly. A lifting block and a lip root cutting blade are slidably mounted on one side of the vertical plate. A guide rail is provided on one side of the vertical plate corresponding to the lifting block and the lip root cutting blade. The lifting block and the lip root cutting blade are provided with sliding grooves and are slidably mounted on the guide rails through the sliding grooves. The lifting block and the lip root cutting blade are arranged vertically and connected by a connecting spring. The lifting block is connected to the punching drive assembly, and a drive block is fixed on one side of the lifting block. The guillotine-type punching assembly also includes two first hinge seats fixed on the support assembly. A cutting blade arm is rotatably mounted between the two first hinge seats through a first rotating shaft. The drive block is located above the other end of the cutting blade arm. A cutting blade is mounted at the bottom of the cutting blade arm. A product support die is provided below the cutting blade. The product support die is fixed on the support assembly and located at the rear end of the feeding assembly.

[0011] The operating steps of the guillotine-type punching assembly are as follows:

[0012] After the raw material for automotive seals is introduced by the feeding assembly, positioned by the positioning assembly, and pressed by the pressing assembly, it is supported by the product support die. Then, the punching drive assembly drives the lifting block and the lip root cutting shaped cutter to descend along the guide rail. The lip root cutting shaped cutter first contacts the raw material for automotive seals, cuts it, and presses it. Then, the lifting block continues to descend, driving the drive block to contact the cutter arm. The cutter arm uses the first hinge seat at the end as a support and rotates downward to cut the raw material for automotive seals from back to front, and then returns to its original position.

[0013] A rotating arm guide plate is fixed on one side of the cutting arm. A rotating arm guide base is provided on the support assembly corresponding to the rotating arm guide plate. Two rotating arm guide uprights are provided on the upper surface of the rotating arm guide base. The rotating arm guide plate passes through the two rotating arm guide uprights.

[0014] The cutter is composed of several standard blades assembled together.

[0015] The pressing assembly is set between two sets of guillotine-type punching assemblies. The pressing assembly includes two second hinge seats fixed on the support assembly and a connecting base. A T-shaped plate is hinged between the two second hinge seats through a second rotating shaft. A pressing plate is fixed on the top of the T-shaped plate. A pressing cylinder is fixed at one end of the upper surface of the pressing plate. The bottom of the telescopic rod of the pressing cylinder passes through the pressing plate and is connected to an n-shaped frame. The n-shaped frame is hinged to the connecting base through a pin.

[0016] The operating steps for the material pressing assembly are as follows:

[0017] After the raw materials for automotive seals are introduced by the feeding assembly and positioned by the positioning assembly, the telescopic rod of the pressing cylinder of the pressing assembly retracts, causing the pressing plate to rotate around the second rotating shaft. The pressing plate presses down on the two sets of raw materials for automotive seals simultaneously to complete the pressing operation. After the punching operation is completed, the material is reset.

[0018] A pressure guide plate is fixed at the bottom of the pressure plate, and a pressure guide base is provided on the support assembly corresponding to the pressure guide plate. Two pressure guide uprights are provided on the upper surface of the pressure guide base, and the pressure guide plate passes through the two pressure guide uprights.

[0019] The feeding assembly includes a feeding guide block disposed at the front end of the guillotine-type punching assembly, and a feeding guide groove is provided through the feeding guide block;

[0020] The operating steps for the feeding assembly are as follows:

[0021] The raw materials for automotive sealing components enter the guillotine-type punching assembly through the feed guide groove of the feed guide block.

[0022] The positioning component is fixed on the support block of the support component. A guide seat is installed on the support block. A baffle is installed at the rear end of the guide seat. A horizontal plate is provided on the top of the baffle. A positioning sensor is installed on the horizontal plate. A sleeve rod is inserted inside the guide seat. A positioning rod is fixed inside the sleeve rod. One end of the positioning rod passes through the baffle and is fixed with a positioning ring. A return spring is provided between the sleeve rod and the baffle.

[0023] The operation steps of the positioning component are as follows:

[0024] After the raw materials for automotive seals are introduced through the feeding assembly, they come into contact with the positioning rod. The positioning rod moves backward, which drives the positioning ring to trigger the positioning sensor for positioning. After positioning is completed, the pressing assembly and the guillotine punching assembly start to work in succession. After the punching operation is completed, the parts are reset under the action of the return spring.

[0025] The guide seat has a stop bar at the front end of the sleeve rod, and the stop bar and the return spring are located on both sides of the guide seat.

[0026] The punching drive assembly includes a punching drive cylinder fixed on the support assembly, and the bottom of the telescopic rod of the punching drive cylinder is connected to the guillotine punching assembly. The support assembly includes a base, on which a gantry frame is provided. The punching drive assembly is fixed on the top of the gantry frame. The guillotine punching assembly, the pressing assembly, the feeding assembly, and the positioning assembly are all fixed on the base and located inside the gantry frame.

[0027] The beneficial effects of this invention are: the tool has a long service life, the lip cut of the sealing component is straight and flat, and there will be no unevenness or "big head" phenomenon at the cut end. There will be no step on the lip cut, and the cut is flat, which helps to improve the yield of the subsequent lip bonding production process; moreover, the required complete lip cut can be obtained in one punching, which shortens the production time and improves the production efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the guillotine-type punching device of the present invention (the support components are not fully shown);

[0029] Figure 2 This is a schematic diagram of the guillotine punching component of the guillotine punching device of the present invention from one direction;

[0030] Figure 3 This is a schematic diagram of the guillotine-type punching component of the guillotine-type punching device of the present invention from another direction.

[0031] Figure 4 This is a schematic diagram of the material pressing assembly of the guillotine-type punching device of the present invention;

[0032] Figure 5 This is a schematic diagram of the feeding assembly of the guillotine-type punching device of the present invention;

[0033] Figure 6 This is a schematic diagram of the assembly of the guillotine punching component, the pressing component, and the feeding component of the guillotine punching device of the present invention;

[0034] Figure 7 This is a schematic diagram of the positioning component of the guillotine-type punching device of the present invention;

[0035] Figure 8 This is a schematic diagram of the punching drive assembly and support assembly of the guillotine punching device of the present invention;

[0036] In the diagram: 1-Guillotine-type punching assembly; 2-Material clamping assembly; 3-Feeding assembly; 4-Positioning assembly; 5-Punching drive assembly; 6-Support assembly;

[0037] 11-Upright plate; 12-Lifting block; 13-Lip root cutting blade for irregular shapes; 14-Connecting spring; 15-Drive block; 16-First hinge seat; 17-First rotating shaft; 18-Cutter arm; 19-Cutter; 110-Product support die; 111-Arm guide plate; 112-Arm guide base; 113-Arm guide plate; 114-Guide rail;

[0038] 21-Second hinge seat; 22-Connecting base; 23-Second rotating shaft; 24-T-shaped plate; 25-Pressure plate; 26-Pressure cylinder; 27-N-shaped frame; 28-Pin shaft; 29-Pressure guide plate; 210-Pressure guide base; 211-Pressure guide upright plate;

[0039] 31-Feed guide block; 32-Feed guide channel;

[0040] 41-Support block; 42-Guide seat; 43-Baffle; 44-Horizontal plate; 45-Positioning sensor; 46-Sleeve rod; 47-Positioning rod; 48-Positioning ring; 49-Reset spring; 410-Lock stop;

[0041] 51-Punching drive cylinder;

[0042] 61-Base; 62-Gantry frame;

[0043] The following will describe in detail, with reference to the accompanying drawings, embodiments of the present invention. Detailed Implementation

[0044] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0045] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0048] A method for guillotine-type punching of the lip of a sealing component, using a guillotine-type punching device.

[0049] The guillotine-type punching device, such as Figure 1 As shown, it includes a guillotine-type punching assembly 1, a pressing assembly 2, a feeding assembly 3, a positioning assembly 4, a punching drive assembly 5, and a support assembly 6. The support assembly 6 is equipped with two sets of guillotine-type punching assemblies 1. The two sets of guillotine-type punching assemblies 1 are jointly configured with a pressing assembly 2. Each set of guillotine-type punching assemblies 1 has a feeding assembly 3 on its front side and a positioning assembly 4 on its rear side. Each set of guillotine-type punching assemblies 1 is connected to the punching drive assembly 5.

[0050] Guillotine-type punching assembly 1 Figure 2 , Figure 3 , Figure 6 As shown, the assembly includes a vertical plate 11 fixed to a support component 6. A lifting block 12 and a lip-root cutting blade 13 are slidably mounted on one side of the vertical plate 11. A guide rail 114 is provided on one side of the vertical plate 11 corresponding to the lifting block 12 and the lip-root cutting blade 13. The lifting block 12 and the lip-root cutting blade 13 have sliding grooves and are slidably mounted on the guide rail 114 via these grooves. The lifting block 12 and the lip-root cutting blade 13 are arranged vertically and connected by a connecting spring 14. The lifting block 12 is connected to the punching drive... The component 5 is connected, and a drive block 15 is fixed on one side of the lifting block 12; the guillotine punching component 1 also includes two first hinge seats 16 fixed on the support component 6. A cutter arm 18 is rotatably mounted between the two first hinge seats 16 through a first rotating shaft 17. The drive block 15 is located above the other end of the cutter arm 18. A cutter 19 is mounted at the bottom of the cutter arm 18. A product support die 110 is provided below the cutter 19. The product support die 110 is fixed on the support component 6 and located at the rear end of the feeding component 3.

[0051] The 13-shaped cutter for cutting at the root of the lip can be designed individually according to the cutting shape of the lip root cut.

[0052] A rotating arm guide plate 111 is fixed on one side of the cutting arm 18. A rotating arm guide base 112 is provided on the support assembly 6 corresponding to the rotating arm guide plate 111. Two rotating arm guide uprights 113 are provided on the upper surface of the rotating arm guide base 112. The rotating arm guide plate 111 is inserted between the two rotating arm guide uprights 113. In order to prevent the cutting arm 18 from shaking due to excessive length and to improve the cutting accuracy of the cutting arm 18, the rotating arm guide plate 111 and the rotating arm guide uprights 113 are installed during the rotation of the cutting arm 18 to prevent the cutting arm 18 from shaking left and right and to ensure the movement accuracy of the cutting arm 18.

[0053] The middle section of the cutter arm 18 is equipped with a rotating arm guide plate 111, the support assembly 6 is equipped with a rotating arm guide base 112 and a rotating arm guide plate 113, which are used to resist lateral forces and control the die clearance of the cutter 19.

[0054] The cutter 19 is composed of several standard blades. It uses a "guillotine" mode to drive the cutter 19 to rotate and punch through the punching drive component 5. This ensures that the cut is made without any joint marks, reduces the punching force through the mechanism, and the rotating mechanism is simple to guide and easy to adjust, saving costs and ensuring quality.

[0055] After production verification, this structure demonstrates stable performance and good punching quality for raw materials with cuts longer than 300mm and thicker rubber sheets. Furthermore, the detachable design of the cutter 19, with the cutter arm 18 embedded within it, significantly reduces the operating cost of the cutter 19.

[0056] Material pressing assembly 2, as Figure 4 , Figure 6 As shown, the pressing assembly 2 is set between two sets of guillotine-type punching assemblies 1. It includes two second hinge seats 21 fixed on the support assembly 6 and a connecting base 22. A T-shaped plate 24 is hinged between the two second hinge seats 21 through a second rotating shaft 23. A pressing plate 25 is fixed to the top of the T-shaped plate 24. A pressing cylinder 26 is fixed to one end of the upper surface of the pressing plate 25. The bottom of the telescopic rod of the pressing cylinder 26 extends out of the pressing plate 25 and is connected to an n-shaped frame 27. The n-shaped frame 27 is hinged to the connecting base 22 through a pin 28.

[0057] A pressing guide plate 29 is fixed at the bottom of the pressing plate 25. A pressing guide base 210 is provided on the support component 6 corresponding to the pressing guide plate 29. Two pressing guide uprights 211 are provided on the upper surface of the pressing guide base 210. The pressing guide plate 29 passes through the two pressing guide uprights 211.

[0058] A pressing guide plate 29 is installed in the middle section of the pressing plate 25, and a pressing guide base 210 and a pressing guide upright plate 211 are installed on the support assembly 6 to prevent uneven pressing force on both sides and rotational shaking.

[0059] Feeding component 3, such as 5 Figure 6 As shown, it includes a feed guide block 31 disposed at the front end of the guillotine punching assembly 1, and a feed guide groove 32 passing through the feed guide block 31.

[0060] Positioning component 4, such as Figure 7 As shown, a support block 41 is fixed on the support assembly 6. A guide seat 42 is installed on the support block 41. A baffle 43 is installed at the rear end of the guide seat 42. A horizontal plate 44 is provided on the top of the baffle 43. A positioning sensor 45 is installed on the horizontal plate 44. A sleeve rod 46 passes through the guide seat 42. A positioning rod 47 is fixed inside the sleeve rod 46. One end of the positioning rod 47 passes through the baffle 43 and is fixed with a positioning ring 48. A return spring 49 is provided between the sleeve rod 46 and the baffle 43.

[0061] The sleeve rod 46 is provided with a stop bar 410 at the front end of the guide seat 42. The stop bar 410 and the return spring 49 are located on both sides of the guide seat 42.

[0062] punching drive component 5, such as Figure 8 As shown, it includes a punching drive cylinder 51 fixed on the support assembly 6, and the bottom of the telescopic rod of the punching drive cylinder 51 is connected to the guillotine punching assembly 1.

[0063] Support component 6, such as Figure 8 As shown, it includes a base 61, on which a gantry frame 62 is provided. The punching drive assembly 5 is fixed on the top of the gantry frame 62. The guillotine punching assembly 1, the pressing assembly 2, the feeding assembly 3, and the positioning assembly 4 are all fixed on the base 61 and located inside the gantry frame 62.

[0064] The operating steps are as follows:

[0065] The raw material of the automotive sealing component is fed into the guillotine-type punching component 1 through the feeding component 3. After the positioning component 4 senses that the raw material of the automotive sealing component has entered the designated position, the pressing component 2 presses the raw material of the automotive sealing component to prevent the shape and position of the raw material of the automotive sealing component from changing during the punching process. After the pressing action is completed, the punching drive component 5 drives the guillotine-type punching component 1 to punch the raw material of the automotive sealing component in the form of a guillotine. After the punching is completed, each component resets in turn and the raw material of the automotive sealing component is taken out.

[0066] Specifically:

[0067] The raw materials for automotive seals are introduced through the feed guide groove 32 of the feed guide block 31. After the raw materials come into contact with the positioning rod 47, the positioning rod 47 moves backward, driving the positioning ring 48 to trigger the positioning sensor 45 for positioning. At the same time, the stop bar 410 can prevent the raw materials from continuing to move after they have reached the position. After positioning is completed, the telescopic rod of the pressing cylinder 26 of the pressing assembly 2 retracts, driving the pressing plate 25 to rotate around the second rotating shaft 23. The pressing plate 25 presses down on the two sets of raw materials for automotive seals simultaneously to complete the pressing operation. During the process, the pressing guide plate 29 moves between the two pressing guide plates 211 to ensure the pressing accuracy. After pressing is completed, the raw materials for automotive seals are supported on the product support. On the die 110, the punching drive cylinder 51 drives the lifting block 12 and the lip root cutting special-shaped cutter 13 to descend along the guide rail 114. The lip root cutting special-shaped cutter 13 first contacts the automotive sealing material and presses it. Then the lifting block 12 continues to descend, driving the drive block 15 to contact the cutter arm 18. The cutter arm 18 is supported by the first hinge seat 16 at the end. The cutter arm 18 rotates downward to cut the automotive sealing material from back to front. During the process, the arm guide plate 111 moves between the two arm guide plates 113 to ensure the accuracy of the cutter arm 18's movement. After the punching action is completed, the guillotine punching assembly 1, the pressing assembly 2, and the positioning assembly 4 are reset in sequence, and the processed automotive sealing material is taken out.

[0068] In this invention, the raw material for automotive seals is fed into the product support die 110 via the feeding component 3. After the positioning component 4 senses that the raw material has entered the designated position, the pressing component 2 presses the raw material to prevent changes in its shape and position during the punching process. After the pressing action is completed, the punching drive component 5 drives the guillotine-type punching component 1 to punch the raw material in the form of a guillotine. After the punching is completed, each component resets in turn and the raw material is removed.

[0069] Compared to slicing methods, the guillotine-type integrated punching structure of this invention has a long service life, avoiding frequent tool replacements during production, indirectly improving production efficiency, reducing defective products caused by tool sharpness issues, and increasing the yield rate; at the same time, the lip cut of the sealing component is straight and flat, and there will be no unevenness or "big head" phenomenon at the cut end.

[0070] Compared to multi-cutting methods, the guillotine-type single-cutting structure of this invention does not create steps on the lip cut, resulting in a smooth cut that helps improve the yield rate of subsequent lip bonding processes. Furthermore, a single cut can produce the required complete lip cut, eliminating the need for two or three cuts to complete the lip cut of the seal, thus shortening production time and improving production efficiency.

[0071] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A method for guillotine-type punching processing of the lip edge of a sealing component, characterized in that, The cutting is performed using a guillotine-type punching device, which includes a guillotine-type punching assembly (1), a pressing assembly (2), a feeding assembly (3), a positioning assembly (4), a punching drive assembly (5), and a support assembly (6). The support assembly (6) is equipped with two sets of guillotine-type punching assemblies (1). The two sets of guillotine-type punching assemblies (1) are configured with a pressing assembly (2). Each set of guillotine-type punching assemblies (1) has a feeding assembly (3) on its front side and a positioning assembly (4) on its rear side. Each set of guillotine-type punching assemblies (1) is connected to a punching drive assembly (5). The operating steps are as follows: The raw material of the automotive seal is fed into the guillotine punching assembly (1) by the feeding assembly (3). After the positioning assembly (4) senses that the raw material of the automotive seal has entered the designated position, the pressing assembly (2) presses the raw material of the automotive seal to prevent the shape and position of the raw material of the automotive seal from changing during the punching process. After the pressing action is completed, the punching drive assembly (5) drives the guillotine punching assembly (1) to punch the raw material of the automotive seal in the form of a guillotine. After the punching is completed, each assembly is reset in turn and the raw material of the automotive seal is taken out. The guillotine punching assembly (1) includes a vertical plate (11) fixed on a support assembly (6). A lifting block (12) and a lip root cutting blade (13) are slidably mounted on one side of the vertical plate (11). A guide rail (114) is provided on one side of the vertical plate (11) corresponding to the lifting block (12) and the lip root cutting blade (13). The lifting block (12) and the lip root cutting blade (13) are provided with grooves and are slidably mounted on the guide rail (114) through the grooves. The lifting block (12) and the lip root cutting blade (13) are arranged vertically and connected by a connecting spring (14). The lifting block (12) and the punching drive are connected by a vertical plate (11) and a vertical plate (12). The moving component (5) is connected, and the lifting block (12) is fixed with a driving block (15) on one side; the guillotine punching component (1) also includes two first hinge seats (16) fixed on the support component (6), and a cutter arm (18) is rotatably installed between the two first hinge seats (16) through a first rotating shaft (17). The driving block (15) is located above the other end of the cutter arm (18), and a cutter (19) is installed at the bottom of the cutter arm (18). A product support die (110) is provided below the cutter (19). The product support die (110) is fixed on the support component (6) and located at the rear end of the feeding component (3); The operating steps of the guillotine punching assembly (1) are as follows: After the raw material of the automotive sealing component is introduced by the feeding assembly (3), positioned by the positioning assembly (4), and pressed by the pressing assembly (2), it is supported by the product support die (110). Then, the punching drive assembly (5) drives the lifting block (12) and the lip root cutting special-shaped cutter (13) to descend along the guide rail (114). The lip root cutting special-shaped cutter (13) first contacts the raw material of the automotive sealing component to cut and press it. Then the lifting block (12) continues to descend, driving the drive block (15) to contact the cutting arm (18). The cutting arm (18) is supported by the first hinge seat (16) at the end. The cutting arm (18) rotates downward to cut the raw material of the automotive sealing component from back to front, and then resets. The positioning component (4) is fixed on the support block (41) of the support component (6). A guide seat (42) is installed on the support block (41). A baffle (43) is installed at the rear end of the guide seat (42). A horizontal plate (44) is provided on the top of the baffle (43). A positioning sensor (45) is installed on the horizontal plate (44). A sleeve rod (46) is passed through the guide seat (42). A positioning rod (47) is fixed inside the sleeve rod (46). One end of the positioning rod (47) passes through the baffle (43) and is fixed with a positioning ring (48). A return spring (49) is provided between the sleeve rod (46) and the baffle (43). The operation steps of the positioning component (4) are as follows: After the raw material for automotive sealing parts is introduced through the feeding assembly (3), it comes into contact with the positioning rod (47). The positioning rod (47) moves backward, which drives the positioning ring (48) to trigger the positioning sensor (45) for positioning. After positioning is completed, the pressing assembly (2) and the guillotine punching assembly (1) start to work in succession. After the punching operation is completed, the parts are reset under the action of the reset spring (49).

2. The method for guillotine-type punching of the lip edge of a sealing component according to claim 1, characterized in that, A rotating arm guide plate (111) is fixed on one side of the cutting arm (18). A rotating arm guide base (112) is provided on the support assembly (6) corresponding to the rotating arm guide plate (111). Two rotating arm guide uprights (113) are provided on the upper surface of the rotating arm guide base (112). The rotating arm guide plate (111) is inserted between the two rotating arm guide uprights (113).

3. The method for guillotine-type punching of the lip of a sealing component according to claim 2, characterized in that, The cutter (19) is composed of several standard blades assembled together.

4. The method for guillotine-type punching of the lip edge of a sealing component according to claim 1, characterized in that, The pressing assembly (2) is set between two sets of guillotine punching assemblies (1). The pressing assembly (2) includes two second hinge seats (21) fixed on the support assembly (6) and a connecting base (22). A T-shaped plate (24) is hinged between the two second hinge seats (21) through a second rotating shaft (23). A pressing plate (25) is fixed on the top of the T-shaped plate (24). A pressing cylinder (26) is fixed at one end of the upper surface of the pressing plate (25). The bottom of the telescopic rod of the pressing cylinder (26) passes through the pressing plate (25) and is connected to an n-shaped frame (27). The n-shaped frame (27) is hinged to the connecting base (22) through a pin (28). The operating steps of the pressing assembly (2) are as follows: After the raw materials for automotive seals are introduced by the feeding assembly (3) and positioned by the positioning assembly (4), the telescopic rod of the pressing cylinder (26) of the pressing assembly (2) retracts, causing the pressing plate (25) to rotate around the second rotating shaft (23). The pressing plate (25) presses down on the two sets of raw materials for automotive seals at the same time to complete the pressing operation. After the punching operation is completed, the material is reset.

5. The method for guillotine-type punching of a sealing lip according to claim 4, characterized in that, The bottom of the pressure plate (25) is fixed with a pressure guide plate (29). The support component (6) is provided with a pressure guide base (210) corresponding to the pressure guide plate (29). The upper surface of the pressure guide base (210) is provided with two pressure guide uprights (211). The pressure guide plate (29) passes between the two pressure guide uprights (211).

6. The method for guillotine-type punching of a sealing element lip according to claim 1, characterized in that, The feeding assembly (3) includes a feeding guide block (31) disposed at the front end of the guillotine punching assembly (1), and a feeding guide groove (32) is provided through the feeding guide block (31). The operation steps of the feeding component (3) are as follows: The raw materials for automotive sealing components enter the interior of the guillotine punching assembly (1) through the feed guide groove (32) of the feed guide block (31).

7. The method for guillotine-type punching of the lip edge of a sealing component according to claim 1, characterized in that, The sleeve (46) has a stop bar (410) at the front end of the guide seat (42), and the stop bar (410) and the return spring (49) are located on both sides of the guide seat (42).

8. The method for guillotine-type punching of the lip edge of a sealing component according to claim 1, characterized in that, The punching drive assembly (5) includes a punching drive cylinder (51) fixed on the support assembly (6), and the bottom of the telescopic rod of the punching drive cylinder (51) is connected to the guillotine punching assembly (1); the support assembly (6) includes a base (61), and a gantry frame (62) is provided on the base (61). The punching drive assembly (5) is fixed on the top of the gantry frame (62). The guillotine punching assembly (1), the pressing assembly (2), the feeding assembly (3), and the positioning assembly (4) are all fixed on the base (61) and located inside the gantry frame (62).

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