Guillotine type punching machining method for lip edge of sealing element

Abstract

According to the guillotine type punching machining method for the sealing element lip edge, a guillotine type punching device is adopted, an automobile sealing element raw material is guided into a guillotine type punching assembly through a feeding assembly, and after a positioning assembly senses that the automobile sealing element raw material enters a designated position, a material pressing assembly tightly presses the automobile sealing element raw material; the shape and the position of the automobile sealing part raw material are prevented from being changed in the punching process, after the pressing action is completed, the punching driving assembly drives the fodder chopper type punching assembly to punch the automobile sealing part raw material in a fodder chopper mode, after punching is completed, all the assemblies are reset sequentially, and the automobile sealing part raw material is taken out. The cutter is long in service life, the lip notch of the sealing element is straight and flat, no step is generated on the lip notch, the notch is flat, and the yield of the subsequent lip glue receiving production procedure can be improved; and a required complete lip edge notch can be obtained through one-time punching, so that the production time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of punching processing of sealing parts, and in particular to a guillotine-type punching processing method for the lip edge of a sealing part. Background Art

[0002] When the lip edge of the seal is punched for a long cut, it is usually processed by scoring or multi-cutting. Score cutting means first using a scoring knife to cut the rubber, and then using a cutting knife to cut off the root connection. Multi-cutting means using a knife with a short blade length to punch a long cut multiple times by feeding and punching.

[0003] The scoring technology has the following defects: when the scoring knife enters the rubber, the rubber at the end will shrink first and then be cut. The rubber shrinkage will cause the incision to deviate, so that the incision at the end is not in the same straight line as the subsequent incision. The incision at the end is like turning a corner and then returning to the right track, causing the incision end to be not straight or the incision to be "big". In addition, the scoring technology has the problem of low scoring knife life, especially for long incisions and thick rubber, the scoring knife edge can easily reach the metal fatigue strength and become blunt or chipped.

[0004] The multi-cutting technology has the following defects: For example, there is a step between the first and second punching, resulting in an uneven cut, affecting the appearance and gluing effect. In addition, multiple feeding and multiple punching will increase the production time of a single piece, affecting the punching efficiency and production efficiency. Summary of the invention

[0005] The present invention aims to solve the deficiencies of the prior art and provides a guillotine-type punching method for the lip edge of a sealing member.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A guillotine punching method for a sealing part lip edge is performed by using a guillotine punching device, wherein the guillotine punching device comprises a guillotine punching assembly, a material pressing assembly, a material feeding assembly, a positioning assembly, a punching drive assembly and a support assembly, wherein two groups of guillotine punching assemblies are arranged on the support assembly, and the two groups of guillotine punching assemblies are jointly equipped with a group of material pressing assemblies, each group of guillotine punching assemblies is equipped with a set of material feeding assemblies on the front side and a set of positioning assemblies on the rear side, and each group of guillotine punching assemblies is connected with a punching drive assembly;

[0008] The steps are:

[0009] The raw materials of automobile seals are introduced into the guillotine-type punching and cutting component through the feeding component. After the positioning component senses that the raw materials of automobile seals have entered the designated position, the pressing component presses the raw materials of automobile seals to prevent the shape and position of the raw materials of automobile seals from changing during the punching and cutting process. After the pressing action is completed, the punching and cutting drive component drives the guillotine-type punching and cutting component to punch the raw materials of automobile seals in the form of a guillotine. After the punching and cutting is completed, each component is reset in succession to take out the raw materials of automobile seals.

[0010] The guillotine punching assembly includes a vertical plate fixed on the supporting assembly, a lifting block and a lip root cutting special-shaped cutter are slidably installed 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 special-shaped cutter, a slide groove is provided on the lifting block and the lip root cutting special-shaped cutter and the guide rail is slidably installed through the slide groove, the lifting block and the lip root cutting special-shaped cutter are arranged up and down and a connecting spring is provided between them, the lifting block is connected to the punching driving assembly, and a driving block is fixed on one side of the lifting block; the guillotine punching assembly also includes two first hinged seats fixed on the supporting assembly, a cutter rotating arm is rotatably installed between the two first hinged seats through a first rotating shaft, the driving block is located above the other end of the cutter rotating arm, a cutter is installed at the bottom of the cutter rotating arm, a product supporting die is provided below the cutter, and the product supporting die is fixed on the supporting assembly and located at the rear end of the feeding assembly;

[0011] The operating steps of the guillotine punching assembly are:

[0012] After the raw materials of automobile seals are introduced through the feeding assembly, positioned by the positioning assembly, and pressed by the pressing assembly, they are supported by the product supporting die, and then the punching drive assembly drives the lifting block and the lip root cutting special-shaped cutter to descend along the guide rail. The lip root cutting special-shaped cutter first contacts the raw materials of automobile seals to cut and press them, and then the lifting block continues to descend, driving the driving block to contact the cutter arm. The cutter arm uses the first hinged seat at the end as a support, and the cutter arm rotates downward to cut the raw materials of automobile seals from back to front, and then resets.

[0013] A swivel arm guide plate is fixed on one side of the cutter swivel arm, a swivel arm guide base is provided on the support assembly corresponding to the swivel arm guide plate, two swivel arm guide vertical plates are provided on the upper surface of the swivel arm guide base, and the swivel arm guide plate is inserted between the two swivel arm guide vertical plates.

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

[0015] The pressing assembly is arranged between the two groups of guillotine-type punching assemblies, and the pressing assembly includes two second hinged seats fixed on the supporting assembly and a connecting base, a T-shaped plate is hinged between the two second hinged seats through a second rotating shaft, a pressing plate is fixed on the top of the T-shaped plate, a pressing cylinder is fixed on 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, and the n-shaped frame is hinged to the connecting base through a pin shaft;

[0016] The operating steps of the pressing assembly are:

[0017] After the raw materials of automobile seals are introduced through the feeding assembly and positioned by the positioning assembly, the telescopic rod of the pressing cylinder of the pressing assembly retracts, driving the pressing plate to rotate around the second rotating shaft. The pressing plate presses down two groups of raw materials of automobile seals at the same time to complete the pressing operation, and then resets after the punching operation is completed.

[0018] A pressing guide plate is fixed at the bottom of the pressing plate, a pressing guide base is provided on the supporting assembly corresponding to the pressing guide plate, two pressing guide vertical plates are provided on the upper surface of the pressing guide base, and the pressing guide plate is inserted between the two pressing guide vertical plates.

[0019] The feed assembly comprises a feed guide block arranged at the front end of the guillotine-type punching assembly, and a feed guide through groove is penetrated through the feed guide block;

[0020] The operation steps of the feeding component are:

[0021] The raw materials of automobile seals enter the interior of the guillotine-type punching component through the feed guide slot of the feed guide block.

[0022] The positioning assembly is fixed to a support block on the support assembly, 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 induction sensor is installed on the horizontal plate, a sleeve rod is passed through the guide seat, a positioning rod is fixed in the sleeve rod, one end of the positioning rod passes through the baffle and is fixed with a positioning ring, and a reset spring is provided between the sleeve rod and the baffle;

[0023] The steps for positioning components are:

[0024] After the raw materials of automotive seals are introduced through the feeding assembly and contact the positioning rod, the positioning rod moves backward, driving the positioning ring to trigger the positioning sensing sensor for positioning. After the positioning is completed, the pressing assembly and the guillotine-type punching assembly start to operate successively. After the punching operation is completed, it is reset under the action of the reset spring.

[0025] The sleeve rod is provided with an in-place stopper rod at the front end of the guide seat, and the in-place stopper rod and a 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, a portal frame is provided on the base, the punching drive assembly is fixed on the top of the portal frame, and the guillotine punching assembly, the pressing assembly, the feeding assembly, and the positioning assembly are all fixed on the base and located inside the portal frame.

[0027] The beneficial effects of the present invention are as follows: the tool of the present invention has a long service life, the lip incision of the seal is straight and flat, there will be no crookedness or "big head" phenomenon at the end of the incision, no steps will be generated on the lip incision, the incision is flat, which helps to improve the yield rate of the subsequent lip gluing production process; and the required complete lip incision can be obtained by one punching and cutting, which shortens the production time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the guillotine-type punching device of the present invention (the supporting assembly is not fully shown);

[0029] Figure 2 It is a structural schematic diagram of a guillotine-type punching assembly of the guillotine-type punching device of the present invention in one direction;

[0030] Figure 3 It is a schematic structural diagram of the guillotine punching assembly of the guillotine punching device of the present invention in another direction;

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

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

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

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

[0035] Figure 8 It is a structural schematic diagram of a punching drive assembly and a supporting assembly of a guillotine-type punching device of the present invention;

[0036] In the figure: 1-guillotine punching assembly; 2-pressing assembly; 3-feeding assembly; 4-positioning assembly; 5-punching drive assembly; 6-support assembly;

[0037] 11-vertical plate; 12-lifting block; 13-special-shaped cutter for cutting off the root of the lip edge; 14-connecting spring; 15-driving block; 16-first hinge seat; 17-first rotating shaft; 18-cutter rotating arm; 19-cutter; 110-product supporting die; 111-rotating arm guide plate; 112-rotating arm guide base; 113-rotating arm guide vertical plate; 114-guide rail;

[0038] 21-second hinged seat; 22-connecting base; 23-second rotating shaft; 24-T-shaped plate; 25-pressing plate; 26-pressing cylinder; 27-n-shaped frame; 28-pin shaft; 29-pressing guide plate; 210-pressing guide base; 211-pressing guide vertical plate;

[0039] 31-feeding guide block; 32-feeding guide slot;

[0040] 41-support block; 42-guide seat; 43-baffle; 44-horizontal plate; 45-positioning induction sensor; 46-sleeve rod; 47-positioning rod; 48-positioning ring; 49-reset spring; 410-positioning baffle rod;

[0041] 51-punching drive cylinder;

[0042] 61-base; 62-door frame;

[0043] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0045] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

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

[0048] The invention discloses a guillotine-type punching processing method for the lip edge of a sealing part, which is performed by using a guillotine-type punching device.

[0049] The guillotine punching device is as follows Figure 1 As shown, it includes a guillotine punching assembly 1, a material pressing assembly 2, a feeding assembly 3, a positioning assembly 4, a punching drive assembly 5 and a support assembly 6. Two groups of guillotine punching assemblies 1 are arranged on the support assembly 6. The two groups of guillotine punching assemblies 1 are jointly configured with a group of material pressing assembly 2. Each group of guillotine punching assemblies 1 is configured with a set of feeding assemblies 3 on the front side and a set of positioning assemblies 4 on the rear side. Each group of guillotine punching assemblies 1 is connected to a punching drive assembly 5.

[0050] Guillotine punching assembly 1 Figure 2 , Figure 3 , Figure 6 As shown, it includes a vertical plate 11 fixed on the support assembly 6, a lifting block 12 and a lip root cutting special-shaped cutter 13 are slidably installed 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 special-shaped cutter 13, the lifting block 12 and the lip root cutting special-shaped cutter 13 are provided with a slide groove and are slidably installed on the guide rail 114 through the slide groove, the lifting block 12 and the lip root cutting special-shaped cutter 13 are arranged up and down and a connecting spring 14 is provided between them, and the lifting block 12 and the punching drive The component 5 is connected, and a driving block 15 is fixed on one side of the lifting block 12; the guillotine-type punching component 1 also includes two first hinged seats 16 fixed on the supporting component 6, and a cutter arm 18 is rotatably installed between the two first hinged seats 16 through a first rotating shaft 17, and 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, and a product supporting die 110 is provided below the cutter 19, and the product supporting die 110 is fixed on the supporting component 6 and located at the rear end of the feeding component 3.

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

[0052] A swivel guide plate 111 is fixed to one side of the cutter swivel arm 18, and an swivel guide base 112 is provided on the support assembly 6 corresponding to the swivel guide plate 111. Two swivel guide vertical plates 113 are provided on the upper surface of the swivel guide base 112. The swivel guide plate 111 is passed through the two swivel guide vertical plates 113. In order to prevent the cutter swivel arm 18 from shaking due to excessive length and to improve the punching accuracy of the cutter swivel arm 18, a swivel guide plate 111 and a swivel guide vertical plate 113 are installed during the rotation of the cutter swivel arm 18 to prevent the cutter swivel arm 18 from shaking left and right and to ensure the movement accuracy of the cutter swivel arm 18.

[0053] A pivot arm guide plate 111 is installed in the middle section of the cutter pivot arm 18, and a pivot arm guide base 112 and a pivot arm guide vertical plate 113 are installed on the support assembly 6 to resist lateral force and control the gap between the cutter 19 and the die.

[0054] The cutter 19 is composed of a number of standard blades. The "guillotine" mode is used to drive the cutter 19 to rotate and cut through the punching drive assembly 5, which not only ensures that the entire cut is cut without any knife marks, but also reduces the punching force through the mechanism. The rotating mechanism guide is simple and easy to debug, saving costs and ensuring quality.

[0055] After production verification, for raw materials with a cut length greater than 300mm and thick rubber, this structure has stable performance and good punching quality. At the same time, the cutter 19 is embedded in the cutter arm 18, and the two can be separated. The structural design greatly reduces the use cost of the cutter 19.

[0056] Pressing component 2 Figure 4 , Figure 6 As shown, it is arranged between two groups of guillotine-type punching assemblies 1, and the pressing assembly 2 includes two second hinged seats 21 fixed on the supporting assembly 6 and a connecting base 22, a T-shaped plate 24 is hinged between the two second hinged 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 on 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, and the n-shaped frame 27 is hinged to the connecting base 22 through a pin 28.

[0057] A press guide plate 29 is fixed at the bottom of the press plate 25 , and a press guide base 210 is provided on the support assembly 6 corresponding to the press guide plate 29 . Two press guide vertical plates 211 are provided on the upper surface of the press guide base 210 , and the press guide plate 29 is inserted between the two press guide vertical plates 211 .

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

[0059] Feeding components 3 such as 5, Figure 6 As shown, the guillotine-type punching assembly 1 includes a feed guide block 31 disposed at the front end thereof, and a feed guide through groove 32 penetrates the feed guide block 31 .

[0060] Positioning component 4 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 on the rear end of the guide seat 42, a horizontal plate 44 is provided on the top of the baffle 43, a positioning sensing 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 in the sleeve rod 46, one end of the positioning rod 47 passes through the baffle 43 and is fixed with a positioning ring 48, and a return spring 49 is provided between the sleeve rod 46 and the baffle 43.

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

[0062] Punching drive assembly 5 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 type punching assembly 1.

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

[0064] The steps are:

[0065] The raw materials of automobile seals are introduced into the guillotine punching component 1 through the feeding component 3. After the positioning component 4 senses that the raw materials of automobile seals have entered the specified position, the pressing component 2 presses the raw materials of automobile seals to prevent the shape and position of the raw materials of automobile seals from changing during the punching process. After the pressing action is completed, the punching drive component 5 drives the guillotine punching component 1 to punch the raw materials of automobile seals in the form of a guillotine. After the punching is completed, each component is reset in succession to take out the raw materials of automobile seals.

[0066] Specifically:

[0067] The raw materials for automobile seals are introduced through the feed guide groove 32 of the feed guide block 31. After the raw materials for automobile seals contact the positioning rod 47, the positioning rod 47 moves backward, driving the positioning ring 48 to trigger the positioning sensing sensor 45 for positioning. At the same time, the in-place blocking rod 410 can prevent the raw materials for automobile seals from continuing to move after they are in place. 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 two groups of raw materials for automobile seals at the same time to complete the pressing operation. During the process, the pressing guide plate 29 moves between the two pressing guide vertical plates 211 to ensure the accuracy of pressing. After pressing is completed, the raw materials for automobile seals are supported on the product support On the die 110, the punching drive cylinder 51 then 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 automobile seal and presses it. Then the lifting block 12 continues to descend, driving the driving block 15 to contact the cutter arm 18. The cutter arm 18 uses the first hinge seat 16 at the end as a support. The cutter arm 18 rotates downward to cut the raw material of the automobile seal from back to front. During the process, the arm guide plate 111 moves between the two arm guide vertical plates 113 to ensure the accuracy of the movement of the cutter arm 18. After the punching action is completed, the guillotine punching assembly 1, the pressing assembly 2, and the positioning assembly 4 are reset in sequence to take out the processed raw material of the automobile seal.

[0068] In the present invention, the raw material of the automobile seal is introduced into the product supporting concave die 110 through 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 the shape and position of the raw material from changing during the punching process. After the pressing action is completed, the punching drive component 5 drives the guillotine punching component 1 to punch the raw material in the form of a guillotine. After the punching is completed, each component is reset in succession to take out the raw material.

[0069] Compared with the scratching method, the guillotine-type integrated punching structure tool of the present invention has a long service life, avoids the frequent replacement of tools during the production process, indirectly improves production efficiency, reduces the defective products caused by tool sharpness problems, and improves the yield rate; at the same time, the lip incision of the seal is straight and flat, and there will be no crookedness or "big head" phenomenon at the end of the incision.

[0070] Compared with the multi-knife punching method, the guillotine-type one-time punching structure of the present invention will not produce steps on the lip edge incision, and the incision is smooth, which helps to improve the yield rate of the subsequent lip edge gluing production process; and the required complete lip edge incision can be obtained by one punching, and there is no need to punch twice or three times to complete the lip edge incision of the seal, which shortens the production time and improves production efficiency.

[0071] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A guillotine punching method for a sealing lip, characterized in that: A guillotine punching device is used, the guillotine punching device comprising a guillotine punching assembly (1), a material pressing assembly (2), a material feeding assembly (3), a positioning assembly (4), a punching drive assembly (5) and a support assembly (6); two groups of guillotine punching assemblies (1) are arranged on the support assembly (6); the two groups of guillotine punching assemblies (1) are jointly equipped with a group of material pressing assembly (2); each group of guillotine punching assemblies (1) is equipped with a set of material feeding assembly (3) on the front side and a set of positioning assembly (4) on the rear side; each group of guillotine punching assemblies (1) is connected to a punching drive assembly (5); The steps are: The raw material of the automobile seal is introduced into the guillotine punching component (1) through the feeding component (3). After the positioning component (4) senses that the raw material of the automobile seal has entered the designated position, the pressing component (2) presses the raw material of the automobile seal to prevent the shape and position of the raw material of the automobile seal from changing during the punching process. After the pressing action is completed, the punching drive component (5) drives the guillotine punching component (1) to punch the raw material of the automobile seal in the form of a guillotine. After the punching is completed, each component is reset in succession to remove the raw material of the automobile seal.

2. A guillotine punching method for sealing lip according to claim 1, characterized in that: The guillotine-type punching assembly (1) comprises a vertical plate (11) fixed on a supporting assembly (6); a lifting block (12) and a lip root cutting special-shaped cutting knife (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 special-shaped cutting knife (13); a sliding groove is provided on the lifting block (12) and the lip root cutting special-shaped cutting knife (13) and the lifting block (12) and the lip root cutting special-shaped cutting knife (13) are slidably mounted on the guide rail (114) through the sliding groove; the lifting block (12) and the lip root cutting special-shaped cutting knife (13) are arranged up and down and a connecting spring (14) is provided between them; the lifting block (12) and the punching drive The lifting block (12) is connected to the movable assembly (5), and a driving block (15) is fixed on one side of the lifting block (12); the guillotine-type punching assembly (1) also includes two first hinged seats (16) fixed on the supporting assembly (6), a cutter rotating arm (18) is rotatably mounted between the two first hinged seats (16) via a first rotating shaft (17), the driving block (15) is located above the other end of the cutter rotating arm (18), a cutter (19) is installed at the bottom of the cutter rotating arm (18), a product supporting die (110) is provided below the cutter (19), and the product supporting die (110) is fixed on the supporting assembly (6) and located at the rear end of the feeding assembly (3); The operation steps of the guillotine punching assembly (1) are as follows: After the raw material of the automobile seal is introduced by a feeding assembly (3), positioned by a positioning assembly (4), and pressed by a pressing assembly (2), it is supported by a product supporting die (110), and then the punching driving assembly (5) drives the lifting block (12) and the lip root cutting special-shaped cutter (13) to descend along a guide rail (114). The lip root cutting special-shaped cutter (13) first contacts the raw material of the automobile seal to cut and press it, and then the lifting block (12) continues to descend, driving the driving block (15) to contact the cutter rotating arm (18). The cutter rotating arm (18) uses a first hinge seat (16) at the end as a support, and the cutter rotating arm (18) rotates downward to cut the raw material of the automobile seal from the back to the front, and then resets.

3. A guillotine punching method for sealing lip according to claim 2, characterized in that: A rotating arm guide plate (111) is fixed to one side of the cutter rotating 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 vertical plates (113) are provided on the upper surface of the rotating arm guide base (112); and the rotating arm guide plate (111) is inserted between the two rotating arm guide vertical plates (113).

4. A guillotine punching method for sealing lip according to claim 3, characterized in that: The cutter (19) is composed of a plurality of standard blades assembled together.

5. A guillotine punching method for sealing lip according to claim 1, characterized in that: The material pressing assembly (2) is arranged between two groups of guillotine-type punching assemblies (1), and the material pressing assembly (2) comprises two second hinged seats (21) fixed on the support assembly (6) and a connecting base (22), a T-shaped plate (24) is hinged between the two second hinged seats (21) via a second rotating shaft (23), a material pressing plate (25) is fixed on the top of the T-shaped plate (24), a material pressing cylinder (26) is fixed on one end of the upper surface of the material pressing plate (25), the bottom of the telescopic rod of the material pressing cylinder (26) passes through the material pressing plate (25) and is connected to an n-shaped frame (27), and the n-shaped frame (27) is hinged to the connecting base (22) via a pin shaft (28); The operation steps of the pressing component (2) are: After the raw materials of the automobile seals are introduced through 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, driving the pressing plate (25) to rotate around the second rotating shaft (23), and the pressing plate (25) presses down two groups of raw materials of the automobile seals at the same time to complete the pressing operation, and resets after the punching operation is completed.

6. A guillotine punching method for sealing lip according to claim 5, characterized in that: A material pressing guide plate (29) is fixed at the bottom of the material pressing plate (25), a material pressing guide base (210) is provided on the support assembly (6) corresponding to the material pressing guide plate (29), two material pressing guide vertical plates (211) are provided on the upper surface of the material pressing guide base (210), and the material pressing guide plate (29) is inserted between the two material pressing guide vertical plates (211).

7. A guillotine punching method for sealing lip according to claim 1, characterized in that: The feed assembly (3) comprises a feed guide block (31) arranged at the front end of the guillotine-type punching assembly (1), and a feed guide through groove (32) runs through the feed guide block (31); The operation steps of the feeding component (3) are: The raw material of the automobile sealing component enters the interior of the guillotine-type punching component (1) through the feed guide slot (32) of the feed guide block (31).

8. A guillotine punching method for sealing lip according to claim 1, characterized in that: The positioning assembly (4) is fixed to a support block (41) 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 induction sensor (45) is installed on the horizontal plate (44); a sleeve rod (46) is inserted into the guide seat (42); a positioning rod (47) is fixed in 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: After the raw materials of the automobile sealing parts are introduced through the feeding assembly (3), they contact the positioning rod (47), and the positioning rod (47) moves backward, driving the positioning ring (48) to trigger the positioning sensing sensor (45) to perform positioning. After the positioning is completed, the pressing assembly (2) and the guillotine-type punching assembly (1) start to work successively. After the punching operation is completed, the raw materials are reset under the action of the reset spring (49).

9. A guillotine punching method for sealing lip according to claim 8, characterized in that: A stop rod (410) is arranged on the sleeve rod (46) at the front end of the guide seat (42), and the stop rod (410) and the return spring (49) are located on both sides of the guide seat (42).

10. A guillotine punching method for sealing lip according to claim 1, characterized in that: The punching drive assembly (5) comprises a punching drive oil cylinder (51) fixed on the support assembly (6), and the bottom of the telescopic rod of the punching drive oil cylinder (51) is connected to the guillotine punching assembly (1); the support assembly (6) comprises a base (61), and a portal frame (62) is provided on the base (61); the punching drive assembly (5) is fixed on the top of the portal frame (62), and 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 portal frame (62).

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