An adjustable extrusion head for rubber gasket strip processing and its working method

Abstract

The present invention belongs to the technical field of rubber gasket processing, and discloses an adjustable extrusion head for rubber gasket processing and its working method; the adjustable extrusion head for rubber gasket processing includes a frame-shaped extrusion nozzle, a feed inlet and a discharge outlet are respectively arranged on both sides of the frame-shaped extrusion nozzle, and a thickness adjustment component is arranged inside the frame-shaped extrusion nozzle; the thickness adjustment component includes two limiting plates symmetrically arranged and hermetically slidably installed inside the frame-shaped extrusion nozzle, a vertical plate is fixedly installed on one side of the limiting plate close to the feed inlet, the setting directions of the upper and lower vertical plates are opposite, one ends of the two vertical plates away from each other respectively slide through the outer side surface of the frame-shaped extrusion nozzle, a cooling control component is arranged on the limiting plate, and an adjustment driving component is fixedly installed on the outer wall of the frame-shaped extrusion nozzle. The overall structure of the present invention is simple. The adjustment driving component is started to drive the two limiting plates to move relatively, so as to adjust the thickness of the forming cavity, and further adjust the extrusion thickness of the rubber gasket.

Description

Technical Field

[0001] The present invention belongs to the technical field of rubber gasket strip processing. Specifically, it relates to an adjustable extrusion head for rubber gasket strip processing and its working method. Background Technique

[0002] A rubber gasket strip is a strip-shaped product made of rubber material. During the production process of the rubber gasket strip, generally, rubber extrusion equipment is used for processing. During the production process, the rubber raw material needs to be transported to the extruder. A heater is arranged on the extruder. After the heater heats the rubber raw material, it becomes a molten state. Then, the molten rubber raw material is transported to the extrusion head through a screw feeder, and is cooled and extruded through the extrusion head to form a rubber gasket strip.

[0003] There are various existing extrusion equipment. The Chinese invention patent with the patent application number CN202410171309.0 discloses an extrusion molding device for rubber gaskets, including a support plate. An extruder is fixedly installed on the top of the support plate. A storage frame is communicated with the extruder. It also includes a pressing frame, which is slidably connected to the storage frame. A pressing member is slidably connected to the side of the pressing frame close to the extruder. Symmetrically arranged spraying members are rotatably connected to the side of the storage frame close to the pressing member.

[0004] The above-mentioned existing extruders can extrude and cool rubber materials into plate-shaped materials. However, the forming cavities of the existing extrusion heads of this type are all fixed structures, that is, the thickness of the forming cavity is fixed. Therefore, an extrusion head can only produce rubber gasket strips of one thickness, which is not convenient to adjust the extrusion thickness of the rubber gasket strip, and thus not convenient to process rubber gasket strips of different thicknesses, reducing the use effect. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an adjustable extrusion head for rubber gasket strip processing and its working method, which is used to solve the technical problem that the forming cavities of the existing extrusion heads are all fixed structures and the extrusion thickness cannot be adjusted.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] An adjustable extrusion head for rubber gasket strip processing, including a frame-shaped extrusion nozzle. Feed ports and discharge ports are respectively arranged on both sides of the frame-shaped extrusion nozzle. A thickness adjustment component is arranged inside the frame-shaped extrusion nozzle;

[0008] The thickness adjustment assembly includes two limiting plates that are symmetrically arranged and hermetically and slidably installed inside the frame-shaped extrusion nozzle. A vertical plate is fixedly installed on the side of the limiting plate close to the feed port. The vertical plates on the upper and lower sides are arranged in opposite directions. The ends of the two vertical plates away from each other respectively slide through the outer side of the frame-shaped extrusion nozzle. A cooling control assembly is arranged on the limiting plate. An adjustment driving assembly is fixedly installed on the outer wall of the frame-shaped extrusion nozzle. The function of the adjustment driving assembly is to drive the two limiting plates to move relatively, so as to adjust the thickness of the forming cavity, and further adjust the extrusion thickness of the rubber gasket strip.

[0009] The following is the further optimization of the above technical solution by the present invention:

[0010] Flexible arc plates are fixedly installed on the sides of the limiting plates close to the feed port. The other ends of the upper and lower flexible arc plates are respectively fixedly connected to the upper and lower inner walls of the frame-shaped extrusion nozzle. The flexible arc plates are in the shape of arc plates.

[0011] Further optimization: The adjustment driving assembly includes side boxes fixedly installed on at least one side of the frame-shaped extrusion nozzle. Connecting rods are symmetrically and slidably installed on the upper and lower sides of the side boxes respectively. The ends of the two connecting rods away from each other are fixedly connected to the corresponding vertical plates. An adjustment driving mechanism for driving the two connecting rods to move towards each other or away from each other is installed inside the side box.

[0012] Further optimization: The cooling control assembly includes cooling water tanks respectively opened inside the limiting plates. Vertical pipes are fixedly installed at both ends of the cooling water tanks on the sides of the two limiting plates away from each other. The two vertical pipes on the same limiting plate respectively penetrate through the corresponding outer sides of the frame-shaped extrusion nozzle. Flow control members are arranged on the upper and lower sides of the frame-shaped extrusion nozzle. The flow control members are arranged between the two vertical pipes.

[0013] Further optimization: The flow control member includes a cross bar. The cross bar is fixedly connected to the ends of the two vertical pipes. An empty groove is opened in the middle of the cross bar. First water inlet grooves and second water inlet grooves are respectively opened on both sides of the empty groove inside the cross bar. First connecting pipes and second connecting pipes are installed at the top of the cross bar. The first connecting pipe is communicated with the vertical pipe for water inlet through the second water inlet groove and the first water inlet groove. The second connecting pipe is communicated with the vertical pipe for water return through a return groove opened inside the cross bar.

[0014] Further optimization: End plates are arranged on both sides of the empty groove. A rotating cylinder is hermetically and rotatably installed between the two end plates. A first baffle is installed in the first water inlet groove. A first sector-shaped water passing groove is opened on the first baffle. A second baffle is installed in the rotating cylinder. A second sector-shaped water passing groove is opened on the second baffle. The second baffle is closely attached to the first baffle.

[0015] Further optimization: fixed tooth plates are fixedly installed on the upper and lower sides of the frame-type extrusion nozzle, the fixed tooth plates are connected to the rotating cylinder through meshing teeth, and an auxiliary fixing component is provided between the rotating cylinder and the vertical plate, which is used to assist in fixing the position of the vertical plate.

[0016] Further optimization: The auxiliary fixing assembly includes a fixing plate fixedly mounted on the frame-type extrusion nozzle, a fixing cylinder is mounted on the fixing plate, a suction cup is provided on the side of the fixing cylinder close to the vertical plate, the end face of the suction cup is in contact with the outer surface of the vertical plate, a piston is movably installed inside the fixing cylinder, a pull rod is provided on the side of the piston away from the suction cup, a first spring is fixedly connected between the pull rod and the piston, and a fixed driving mechanism for driving the pull rod to move is provided on the frame-type extrusion nozzle.

[0017] Further optimization: a limit control assembly is installed on the fixed cylinder, and the limit control assembly includes a side cylinder fixedly installed on the outer wall of the fixed cylinder, and a limit rod is movably installed inside the side cylinder. After the limit rod enters the fixed cylinder, the limit rod limits the movement of the piston, and a limit driving mechanism for driving the limit rod to move is fixedly installed on the side cylinder.

[0018] The present invention also provides a working method of an adjustable extrusion head for processing a rubber cushion strip. Based on the above-mentioned adjustable extrusion head for processing a rubber cushion strip, the working method includes the following steps:

[0019] S1, limit: first start the limit drive mechanism to drive the limit rod to move into the fixed cylinder to limit the piston;

[0020] S2. Thickness adjustment: Synchronously start the adjustment drive mechanism to drive the two connecting rods to move the upper and lower limit plates toward each other through the vertical plate, thereby adjusting the thickness of the forming cavity between the two limit plates;

[0021] S3. Cooling adjustment: When the upper and lower limit plates move toward each other, the rotating cylinder rotates in cooperation with the fixed tooth plate, so that the overlapping area of the first fan-shaped water groove and the second fan-shaped water groove continuously decreases, thereby relatively reducing the circulation volume of cooling water;

[0022] S4. Auxiliary fixation: The fixed drive mechanism works synchronously to drive the pull rod to move, so that the first spring is continuously stretched. After the limit plate is adjusted into place, the limit drive mechanism drives the limit rod to move back, so that the piston is released. The piston is pulled under the elastic force of the first spring, so that the suction cup generates negative pressure suction on the vertical plate, thereby auxiliary fixing the vertical plate.

[0023] The present invention adopts the above technical solution, which has at least the following beneficial effects:

[0024] 1. In the present invention, two limiting plates are movably installed inside the frame-shaped extrusion nozzle. A forming cavity is provided between the two limiting plates and the inner walls on both sides of the frame-shaped extrusion nozzle. By controlling the relative movement of the two limiting plates, the thickness of the forming cavity can be adjusted, thereby realizing the adjustment of the extrusion thickness of the rubber gasket belt, facilitating the production and processing of rubber gasket belts with different thicknesses. At the same time, a flexible arc plate is provided on the side of the limiting plate close to the box body. The upper and lower flexible arc plates form a horn shape, which is convenient for guiding the rubber raw material, enabling the rubber raw material to enter the forming cavity evenly.

[0025] 2. In the present invention, a cooling water tank is provided inside the limiting plate, which is convenient for cooling the rubber gasket belt during the forming process. At the same time, when the limiting plate moves, the rotating cylinder can be rotated through the cooperation of the fixed toothed plate. When the distance between the two limiting plates is larger, the overlapping area of the first sector-shaped water passage and the second sector-shaped water passage is larger, increasing the flow rate of the cooling water, and thus the forming thickness of the rubber gasket belt is larger and the cooling efficiency is higher, realizing the self-adaptive adjustment of the forming thickness and the cooling effect of the rubber gasket belt, which is convenient for use.

[0026] 3. In the present invention, the end face of the suction cup contacts the surface of the vertical plate. The fixed driving mechanism works synchronously to drive the pull rod to move, continuously stretching the first spring and increasing the elastic force of the first spring. After the limiting plate is adjusted in place, the piston is released synchronously. At this time, when the piston moves, a negative pressure suction force is generated at the suction cup to hold the vertical plate. The smaller the distance between the two limiting plates, the greater the negative pressure suction force of the suction cup on the vertical plate, the greater the reaction force of the rubber raw material on the limiting plate, and the greater the auxiliary fixing force of the suction cup on the limiting plate, improving the stability of the rubber gasket belt during extrusion forming.

[0027] 4. In the present invention, the limiting driving mechanism is activated to drive the limiting rod to move into the fixed cylinder. At this time, the limiting rod is located on the side of the piston away from the vertical plate, and the position of the piston can be limited through the limiting rod. After the two limiting plates are adjusted in place, the limiting driving mechanism synchronously drives the limiting rod to reset, releasing the piston. At this time, under the restoring force of the first spring, a negative pressure suction force is instantaneously generated at the suction cup to hold the vertical plate, assisting in fixing the position of the vertical plate and improving the stability of the rubber gasket belt during extrusion forming.

[0028] The present invention will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0029] Figure 1 It is the overall structural schematic diagram of Embodiment 1 of the present invention;

[0030] Figure 2 It is the internal structural schematic diagram of the frame-shaped extrusion nozzle in Embodiment 1 of the present invention;

[0031] Figure 3 It is the structural schematic diagram of the adjustment driving assembly in Embodiment 1 of the present invention;

[0032] Figure 4 It is a schematic structural diagram of the limit plate in Embodiment 1 of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the cooling water tank in Embodiment 1 of the present invention;

[0034] Figure 6 It is a schematic structural diagram of the cooling control component in Embodiment 1 of the present invention;

[0035] Figure 7 It is a schematic structural diagram of the cross bar in Embodiment 1 of the present invention;

[0036] Figure 8 It is a schematic structural diagram of the rotating cylinder in Embodiment 1 of the present invention;

[0037] Figure 9 It is a schematic structural diagram of the auxiliary fixing component in Embodiment 1 of the present invention;

[0038] Figure 10 It is a schematic internal structure diagram of the fixed cylinder in Embodiment 1 of the present invention;

[0039] Figure 11 It is Figure 10 a partial enlarged view of part A in

[0040] Figure 12 It is a schematic structural diagram of the extrusion head in use in Embodiment 1 of the present invention;

[0041] Figure 13 It is a schematic structural diagram of the adjustment drive component in Embodiment 2 of the present invention;

[0042] Figure 14 It is a schematic structural diagram of another adjustment drive component in Embodiment 2 of the present invention;

[0043] Figure 15 It is a schematic structural diagram of the auxiliary fixing component in Embodiment 3 of the present invention;

[0044] Figure 16 It is Figure 15 a partial enlarged view of part B in

[0045] In the figure: 1 - box body; 2 - frame-shaped extrusion nozzle; 201 - feed inlet; 202 - thickness adjustment component; 2021 - limit plate; 2022 - flexible arc plate; 2023 - plate groove; 2024 - vertical plate; 2025 - side box; 2026 - sliding block; 2027 - connecting rod; 2028 - double-headed screw; 2029 - drive motor; 20210 - double-headed automatic telescopic rod; 20211 - mounting plate; 20212 - adjustment telescopic rod; 203 - cooling control component; 2031 - vertical pipe; 2032 - cooling water tank; 2033 - cross bar; 2034 - empty groove; 2035 - first water inlet tank; 2036 - second water inlet tank; 2037 - first connecting pipe; 2038 - return tank; 2039 - second connecting pipe; 20310 - end plate; 20311 - first baffle; 20312 - first sector-shaped water through groove; 20313 - rotating cylinder; 20314 - second baffle; 20315 - second sector-shaped water through groove; 20316 - tooth groove; 20317 - fixed tooth plate; 204 - auxiliary fixing component; 2041 - guide seat; 2042 - movable tooth plate; 2043 - guide rod; 2044 - vertical plate; 2045 - chute; 2046 - slider; 2047 - fixing plate; 2048 - suction cup; 2049 - fixing cylinder; 20410 - pull rod; 20411 - piston; 20412 - first spring; 20413 - drive telescopic rod; 20414 - mounting seat; 205 - limit control component; 2051 - side cylinder; 2052 - limit rod; 2053 - second spring; 2054 - magnetic block; 2055 - electromagnet; 2056 - limit telescopic rod; 206 - discharge port; 3 - feed pipe; 4 - heater; 5 - screw feeder; 6 - extrusion port. Detailed implementation mode

[0046] Example 1, as Figure 1-12 shown, an adjustable extrusion head for rubber gasket processing includes a frame-shaped extrusion nozzle 2. A feed inlet 201 and a discharge port 206 are respectively arranged on both sides of the frame-shaped extrusion nozzle 2. A thickness adjustment component 202 is arranged inside the frame-shaped extrusion nozzle 2. The thickness adjustment component 202 is used to adjust the thickness of the forming cavity, thereby realizing the adjustment of the extrusion thickness of the rubber gasket tape.

[0047] The thickness adjustment component 202 includes two limit plates 2021 that are symmetrically arranged and sealed and slidably installed inside the frame-shaped extrusion nozzle 2. The two limit plates 2021 are parallel and spaced apart. The forming cavity is arranged between the two limit plates 2021. A vertical plate 2024 is fixedly installed on one side of the limit plate 2021 close to the feed inlet 201. The vertical plate 2024 and the limit plate 2021 are vertically arranged. The setting directions of the upper and lower vertical plates 2024 are opposite. The mutually remote ends of the two vertical plates 2024 respectively slide through the outer side surface of the frame-shaped extrusion nozzle 2.

[0048] In this embodiment, plate grooves 2023 are respectively formed on the upper and lower end faces of the frame-shaped extrusion nozzle 2, and vertical plates 2024 penetrate through the outer side surface of the frame-shaped extrusion nozzle 2 through the corresponding plate grooves 2023, and the vertical plates 2024 are slidably and sealingly connected to the plate grooves 2023.

[0049] When the vertical plates 2024 move, the limiting plates 2021 can be driven to move, so as to adjust the distance between the two limiting plates 2021.

[0050] A cooling control component 203 is arranged on the limiting plate 2021, and an adjusting driving component is fixedly installed on the outer wall of the frame-shaped extrusion nozzle 2. The function of the adjusting driving component is to drive the two limiting plates 2021 to move relatively, so as to adjust the thickness of the forming cavity, and further adjust the extrusion thickness of the rubber gasket.

[0051] Flexible arc plates 2022 are fixedly installed on one side of each limiting plate 2021 close to the feed port 201. The other ends of the upper and lower flexible arc plates 2022 are respectively fixedly connected to the upper and lower inner walls of the frame-shaped extrusion nozzle 2, and the flexible arc plates 2022 are in the shape of arc plates.

[0052] The design is as follows: The two flexible arc plates 2022 are symmetrically arranged, and the upper and lower flexible arc plates 2022 form a trumpet shape. The flexible arc plates 2022 can guide the material, so that the material at the feed port 201 enters the forming cavity between the two limiting plates 2021. Moreover, the flexible arc plates 2022 themselves have elasticity. When the limiting plates 2021 move and adjust, the flexible arc plates 2022 can adaptively adjust their overall shape, so that the flexible arc plates 2022 can guide the material, which is convenient for use.

[0053] The adjusting driving component includes a side box 2025 fixedly installed on at least one side of the frame-shaped extrusion nozzle 2. Connecting rods 2027 are symmetrically and slidably installed on the upper and lower sides of the side box 2025 respectively. The mutually remote ends of the two connecting rods 2027 are fixedly connected to the corresponding vertical plates 2024, and an adjusting driving mechanism for driving the two connecting rods 2027 to move towards each other or away from each other is installed inside the side box 2025.

[0054] In this embodiment, the number of the side boxes 2025 is one, and one side box 2025 is fixedly installed on one side of the frame-shaped extrusion nozzle 2. In addition to this embodiment, the number of the side boxes 2025 can also be two, and the two side boxes 2025 are respectively fixedly installed on both sides of the frame-shaped extrusion nozzle 2.

[0055] The adjustment driving mechanism is activated to drive the two connecting rods 2027 to move towards or away from each other. At this time, the two connecting rods 2027 drive the corresponding vertical plates 2024 to move, thereby driving the two limiting plates 2021 to move towards or away from each other, realizing the adjustment of the thickness of the forming cavity and facilitating use.

[0056] In this embodiment, the adjustment driving mechanism includes two sliding blocks 2026 slidably installed inside the side box 2025. The two sliding blocks 2026 are symmetrically arranged, and the two sliding blocks 2026 are respectively fixedly installed at one end of the two connecting rods 2027 close to each other.

[0057] In this embodiment, the sliding block 2026 is slidably connected to the inner wall of the side box 2025, which is used to guide the movement of the connecting rod 2027 and improve the stability of the connecting rod 2027 during movement.

[0058] A double-headed screw rod 2028 is rotatably installed inside the side box 2025. The double-headed screw rod 2028 is parallel and spaced from the connecting rod 2027. Two thread segments with opposite thread directions are provided on the double-headed screw rod 2028. The two sliding blocks 2026 are respectively threadedly connected to the corresponding thread segments. The top end of the double-headed screw rod 2028 is drivingly connected to a driving motor 2029, and the driving motor 2029 is fixedly installed at the top end of the side box 2025.

[0059] With such a design, the driving motor 2029 is activated to drive the double-headed screw rod 2028 to rotate. The double-headed screw rod 2028 drives the two sliding blocks 2026 to move towards or away from each other through the threads on the two thread segments. The two sliding blocks 2026 respectively drive the two limiting plates 2021 to move towards or away from each other through the connecting rods 2027 and the vertical plates 2024, thereby realizing the adjustment of the thickness of the forming cavity and facilitating use.

[0060] During the movement of the limiting plate 2021, the flexible arc plate 2022 between the limiting plate 2021 and the inner wall of the frame-shaped extrusion nozzle 2 can be adaptively bent to guide the rubber raw material, so that the rubber raw material can smoothly enter the forming cavity between the upper and lower two limiting plates 2021.

[0061] In this embodiment, the outer side surface of the limiting plate 2021 is slidably and sealingly connected to the inner wall of the frame-shaped extrusion nozzle 2. The vertical plate 2024 is fixedly installed on the side of the limiting plate 2021 close to the feed port 201, and the outer side surface of the vertical plate 2024 is also slidably and sealingly connected to the inner wall of the frame-shaped extrusion nozzle 2 and the inner wall of the plate groove 2023. Therefore, the rubber raw material in the forming cavity will not enter the cavity between the mutually separated side surface of the two limiting plates 2021 and the inner wall of the frame-shaped extrusion nozzle 2.

[0062] The cooling control component 203 includes cooling water tanks 2032 respectively opened inside the limit plates 2021. Two vertical pipes 2031 are fixedly installed on one side of each of the two limit plates 2021 away from each other. The two vertical pipes 2031 are respectively communicated with both ends of the cooling water tank 2032.

[0063] In this embodiment, the cooling water tank 2032 is arranged in a continuous S shape with a fold-back layout. Such a design can increase the overall length of the cooling water tank 2032, thereby increasing the flow length of the cooling water and improving the cooling effect.

[0064] The two vertical pipes 2031 on the same limit plate 2021 respectively penetrate through the corresponding outer sides of the frame-shaped extrusion nozzle 2, and the vertical pipes 2031 are slidably connected to the frame-shaped extrusion nozzle 2.

[0065] In this embodiment, the vertical pipes 2031 are arranged on the limit plates 2021 on the side away from the vertical plates 2024. When the limit plates 2021 move up and down, the sliding connection between the vertical pipes 2031 and the frame-shaped extrusion nozzle 2 can guide the movement of the limit plates 2021. Furthermore, through the cooperation of the vertical pipes 2031 and the vertical plates 2024, the stability of the limit plates 2021 during movement can be improved, enabling the limit plates 2021 to move up and down smoothly and improving the use effect.

[0066] Flow control members are arranged on both the upper and lower sides of the frame-shaped extrusion nozzle 2, and the flow control members are arranged between the two vertical pipes 2031.

[0067] The flow control member includes a cross bar 2033. Both ends of the cross bar 2033 are fixedly connected to the ends of the two vertical pipes 2031. An empty slot 2034 is opened in the middle of the cross bar 2033. A first water inlet slot 2035 and a second water inlet slot 2036 are opened inside the cross bar 2033. The first water inlet slot 2035 and the second water inlet slot 2036 are symmetrically arranged on both sides of the empty slot 2034.

[0068] The first water inlet slot 2035 is communicated with the vertical pipe 2031 for water inlet. A return flow slot 2038 is opened inside the cross bar 2033, and the return flow slot 2038 is communicated with the vertical pipe 2031 for return flow.

[0069] A first connection pipe 2037 and a second connection pipe 2039 are installed at the top of the cross bar 2033. The first connection pipe 2037 is communicated with the second water inlet slot 2036, and the first connection pipe 2037 is communicated with the vertical pipe 2031 for water inlet through the second water inlet slot 2036 and the first water inlet slot 2035.

[0070] The second connecting pipe 2039 is connected to the reflux groove 2038 , and the second connecting pipe 2039 is connected to the vertical pipe 2031 for reflux through the reflux groove 2038 .

[0071] A cooling water tank is provided between the first connecting pipe 2037 and the second connecting pipe 2039. The first connecting pipe 2037 and the second connecting pipe 2039 are connected to the water outlet and return end of the cooling water tank through hoses respectively. A water pump is provided at the water outlet of the cooling water tank.

[0072] With this design, when cooling is required, the water pump is started to pump the cooling water in the cooling water tank, and the cooling water enters the cooling water tank 2032 through the first connecting pipe 2037, the second water inlet trough 2036, the first water inlet trough 2035 and the corresponding vertical pipe 2031. The cooling water in the cooling water tank 2032 flows back to the cooling water tank through the corresponding vertical pipe 2031, the reflux trough 2038 and the second connecting pipe 2039. When the cooling water continuously flows through the cooling water tank 2032, it is used to cool the formed rubber pad.

[0073] End plates 20310 are provided on both sides of the empty slot 2034. The end plates 20310 are fixedly mounted on the cross bar 2033. A rotating cylinder 20313 is provided between the two end plates 20310. Both ends of the rotating cylinder 20313 are respectively sealed and rotatably connected to the two end plates 20310.

[0074] A first baffle 20311 is installed on the side of the first water inlet groove 2035 close to the empty groove 2034, and a first fan-shaped water groove 20312 is provided on the first baffle 20311. A second baffle 20314 is installed on the side of the rotating cylinder 20313 close to the first water inlet groove 2035, and a second fan-shaped water groove 20315 is provided on the second baffle 20314. The second baffle 20314 is arranged in close contact with the first baffle 20311.

[0075] When the rotating cylinder 20313 rotates in the empty groove 2034, it is used to drive the second baffle 20314 and the second fan-shaped water groove 20315 to rotate, thereby adjusting the overlapping area of the second fan-shaped water groove 20315 and the first fan-shaped water groove 20312, and the larger the overlapping area of the second fan-shaped water groove 20315 and the first fan-shaped water groove 20312, the greater the circulation volume of cooling water will also be.

[0076] A plurality of tooth grooves 20316 are provided at equal angles on the outer wall of the rotating cylinder 20313. The plurality of tooth grooves 20316 are arranged in a ring shape and at intervals along the outer surface of the rotating cylinder 20313. Fixed tooth plates 20317 are fixedly installed on the upper and lower sides of the frame-shaped extrusion nozzle 2. The fixed tooth plates 20317 are engaged with the tooth grooves 20316 on the rotating cylinder 20313 through meshing teeth.

[0077] With such a design, when the two limit plates 2021 move and the distance between the two limit plates 2021 increases, the limit plate 2021 drives the rotating cylinder 20313 to move through the vertical pipe 2031 and the cross bar 2033. During the movement of the rotating cylinder 20313, it meshes with the fixed toothed plate 20317 and rotates self - adaptively. At this time, the greater the distance between the two limit plates 2021, the larger the overlapping area of the first sector water - passing groove 20312 and the second sector water - passing groove 20315, which relatively increases the flow rate of the cooling water, makes the forming thickness of the rubber gasket belt larger, and the cooling efficiency higher. Furthermore, the forming thickness of the rubber gasket belt and the cooling effect are adaptively adjusted.

[0078] In this embodiment, the operation of introducing cooling water into the cooling water groove 2032 on the limit plate 2021 to cool the rubber gasket belt is preliminary cooling, which is used to preliminarily shape the overall shape of the rubber gasket belt and improve the finished product effect of the rubber gasket belt. The rubber gasket belt extruded and formed by the adjustable extruding head for rubber gasket belt processing still needs to be transported to subsequent cooling, trimming, cutting, and rewinding processes for further processing.

[0079] An auxiliary fixing component 204 is arranged between the rotating cylinder 20313 and the vertical plate 2024, and the auxiliary fixing component 204 is used to assist in fixing the position of the vertical plate 2024.

[0080] The auxiliary fixing component 204 includes a fixing plate 2047 fixedly installed on the frame - type extrusion nozzle 2. A fixing cylinder 2049 is installed on the fixing plate 2047. A suction cup 2048 is arranged on the side of the fixing cylinder 2049 close to the vertical plate 2024. The end face of the suction cup 2048 contacts the outer surface of the vertical plate 2024. A piston 20411 is movably installed inside the fixing cylinder 2049. A pull rod 20410 is arranged on the side of the piston 20411 away from the suction cup 2048. A first spring 20412 is fixedly connected between the pull rod 20410 and the piston 20411. A fixing driving mechanism for driving the pull rod 20410 to move is arranged on the frame - type extrusion nozzle 2.

[0081] With such a design, when the fixing driving mechanism is started to pull the pull rod 20410 to move away from the vertical plate 2024, the pull rod 20410 drives the piston 20411 to move through the first spring 20412. The piston 20411 moves to evacuate the suction cup 2048, and the suction cup 2048 sucks the vertical plate 2024 through negative pressure suction, realizing the auxiliary limitation of the position of the vertical plate 2024.

[0082] In this embodiment, the vertical plate 2024 and the frame-type extrusion nozzle 2 are connected in a sliding sealing manner, so the outer surface of the vertical plate 2024 needs to be smooth to improve the sealing sliding effect. Furthermore, in this embodiment, it is preferred to use the negative pressure suction of the suction cup 2048 to suck the vertical plate 2024 to achieve auxiliary limitation of the position of the vertical plate 2024, which can improve the limitation effect of the vertical plate 2024. When other card-connecting or limit rod plug-in methods are used to assist in limiting the vertical plate 2024, it is necessary to groove or drill the outer surface of the vertical plate 2024, which will damage the outer surface of the vertical plate 2024 and affect the sliding sealing connection effect between the vertical plate 2024 and the frame-type extrusion nozzle 2.

[0083] In this embodiment, the fixed driving mechanism includes a vertical plate 2044 arranged at the upper and lower sides of the frame-type extrusion nozzle 2, and the vertical plate 2044 is slidingly connected to the upper and lower side surfaces corresponding to the frame-type extrusion nozzle 2. The pull rod 20410 extends from one end of the first spring 20412 to the outside of the fixed cylinder 2049 and is fixedly connected to the vertical plate 2044.

[0084] The vertical plate 2044 is provided with a slide groove 2045, in which a slider 2046 is slidably installed. A movable tooth plate 2042 is fixedly installed on one side of the slider 2046. The movable tooth plate 2042 is meshed and transmission-connected with the tooth groove 20316 on the rotating cylinder 20313 through the meshing teeth.

[0085] A guide rod 2043 is fixedly mounted on at least one side of the movable tooth plate 2042 , and a guide seat 2041 is slidably connected to the guide rod 2043 . The guide seat 2041 is fixedly mounted on the cross bar 2033 or the end plate 20310 .

[0086] The guide rod 2043 is slidably connected to the guide seat 2041 to guide the movement of the movable tooth plate 2042, and the vertical plate 2044 and the frame-type extrusion nozzle 2 are also slidably connected, which can improve the stability of the movable tooth plate 2042 during movement; and the position of the movable tooth plate 2042 can also be limited by the cooperation of the guide rod 2043 and the guide seat 2041, so that the movable tooth plate 2042 maintains an engaged transmission connection with the tooth groove 20316 on the rotating cylinder 20313.

[0087] With such a design, the end face of the suction cup 2048 contacts the surface of the vertical plate 2024. When the two limit plates 2021 approach each other, the limit plates 2021 drive the rotating cylinder 20313 to move through the vertical pipe 2031 and the cross bar 2033. During the movement of the rotating cylinder 20313, it meshes with the fixed toothed plate 20317 and rotates self - rotatably. The rotation of the rotating cylinder 20313 drives the movable toothed plate 2042 to move away from the vertical plate 2024 through meshing transmission. At this time, the movable toothed plate 2042 drives the pull rod 20410 to move away from the piston 20411. The smaller the moving distance of the limit plate 2021, the greater the tensile elastic force of the first spring 20412. After the piston 20411 is released, the negative pressure suction force of the suction cup 2048 on the vertical plate 2024 is greater. The smaller the distance between the two limit plates 2021, the greater the reaction force of the rubber raw material on the limit plate 2021, and the greater the auxiliary fixing force of the suction cup 2048 on the limit plate 2021, improving the stability of the rubber gasket strip during extrusion molding.

[0088] A limit control component 205 is installed on the fixed cylinder 2049, and the limit control component 205 is activated to limit the position of the piston 20411.

[0089] The limit control component 205 includes a side cylinder 2051 fixedly installed on the outer wall of the fixed cylinder 2049. The side cylinder 2051 is communicated with the inner cavity of the fixed cylinder 2049. A limit rod 2052 is movably installed inside the side cylinder 2051. After the limit rod 2052 enters the fixed cylinder 2049, the limit rod 2052 limits the movement of the piston 20411, and a limit driving mechanism for driving the limit rod 2052 to move is fixedly installed on the side cylinder 2051.

[0090] In this embodiment, the limit driving mechanism includes a second spring 2053 fixedly installed at one end of the limit rod 2052 away from the fixed cylinder 2049. The other end of the second spring 2053 is fixedly connected to the upper inner wall of the side cylinder 2051. A magnetic block 2054 is installed on the limit rod 2052, and an electromagnet 2055 is installed at the end of the side cylinder 2051.

[0091] When the electromagnet 2055 is energized, it generates a repulsive force on the magnetic block 2054, causing the magnetic block 2054 to drive the limit rod 2052 to move into the interior of the fixed cylinder 2049. At this time, the limit rod 2052 is located behind the piston 20411 to limit the movement of the piston 20411. After the driving motor 2029 drives the limit plate 2021 to move in place, the electromagnet 2055 is de-energized. At this time, under the restoring force of the second spring 2053, the limit rod 2052 is driven to move upward, causing the limit rod 2052 to retract into the side cylinder 2051. At this time, the piston 20411 is released, and the piston 20411 moves to the side away from the vertical plate 2024 under the pulling force of the first spring 20412. The sucker 2048 and the vertical plate 2024 are fixed by negative pressure adsorption, realizing the auxiliary fixation of the position of the limit plate 2021 and improving the stability of the rubber pad belt during extrusion molding.

[0092] In this embodiment, the electromagnet 2055 and the driving motor 2029 are connected in series. When the driving motor 2029 is started, the electromagnet 2055 is started synchronously. When the driving motor 2029 stops working, the electromagnet 2055 stops working synchronously.

[0093] The present invention also provides a working method for an adjustable extrusion head for rubber pad belt processing. Based on the above-mentioned adjustable extrusion head for rubber pad belt processing, the working method includes the following steps:

[0094] S1. Limiting: First, start the limit driving mechanism to drive the limit rod 2052 to move into the interior of the fixed cylinder 2049 to limit the piston 20411.

[0095] In the initial state, the mutually remote sides of the upper and lower limit plates 2021 are respectively in contact with the upper and lower inner walls of the frame-shaped extrusion nozzle 2. At this time, the distance between the two limit plates 2021 is kept at the maximum.

[0096] In the S1 step, the working principle of the limit driving mechanism is as follows: After the electromagnet 2055 is energized, it generates a repulsive force on the magnetic block 2054. At this time, the magnetic block 2054 pushes the limit rod 2052 to move towards the interior of the fixed cylinder 2049, causing the limit rod 2052 to move into the fixed cylinder 2049 and limit the side of the piston 20411 away from the vertical plate 2024, which is convenient for use.

[0097] S2. Thickness adjustment: Synchronously start the adjustment driving mechanism to drive the two connecting rods 2027 to drive the upper and lower limit plates 2021 to move towards each other through the vertical plate 2024, so as to adjust the thickness of the forming cavity between the two limit plates 2021.

[0098] In the step S2, the working principle of the adjusting driving mechanism is as follows: When the driving motor 2029 is turned on to drive the double-headed screw 2028 to rotate, the double-headed screw 2028 drives the two sliding blocks 2026 to move towards each other through the threads on the two threaded sections. The sliding blocks 2026 drive the two vertical plates 2024 to move towards each other through the connecting rods 2027, so as to drive the upper and lower limiting plates 2021 to move towards each other, realizing the adjustment of the thickness of the forming cavity between the two limiting plates 2021, and further adjusting the extrusion thickness of the rubber gasket strip.

[0099] In the step S2, a flexible arc plate 2022 is installed between one ends of the two limiting plates 2021 close to the feeding port 201 and the inner wall of the frame-shaped extrusion nozzle 2. During the movement of the limiting plates 2021, the flexible arc plate 2022 can bend freely, and the flexible arc plate 2022 is used to guide the rubber raw material, so that the rubber raw material can enter the forming cavity between the two limiting plates 2021, which is convenient for use.

[0100] S3. Cooling adjustment: When the upper and lower limiting plates 2021 move towards each other, the rotating cylinder 20313 rotates under the cooperation of the fixed toothed plate 20317, so that the overlapping area of the first sector-shaped water channel 20312 and the second sector-shaped water channel 20315 continuously decreases, and the flow rate of the cooling water relatively decreases.

[0101] In the step S3, the communication principle of the first sector-shaped water channel 20312 and the second sector-shaped water channel 20315 is as follows: When the upper and lower limiting plates 2021 move towards each other, the cross bar 2033 is driven by the vertical pipe 2031 to move towards the side of the frame-shaped extrusion nozzle 2. At this time, the rotating cylinder 20313 rotatably installed on the cross bar 2033 is meshed with the fixed toothed plate 20317 through the tooth groove 20316. During the movement, the rotating cylinder 20313 rotates freely, so that the overlapping area of the second sector-shaped water channel 20315 on the second baffle 20314 and the first sector-shaped water channel 20312 on the first baffle 20311 continuously changes.

[0102] And when the distance between the two limiting plates 2021 is farther, the overlapping area of the first sector-shaped water channel 20312 and the second sector-shaped water channel 20315 is larger, the forming thickness of the rubber gasket strip is larger, and the cooling effect is better. Furthermore, the cooling effect and the forming thickness of the rubber gasket strip are adaptively adjusted.

[0103] In the step S3, the first connecting pipe 2037 and the second connecting pipe 2039 on the cross bar 2033 are respectively communicated with the water outlet and the water inlet of the peripheral cooling water tank through hoses. The cooling water output by the cooling water tank enters the inside of the cooling water tank 2032 through the first connecting pipe 2037, and then flows back to the cooling water tank through the second connecting pipe 2039. When the cooling water continuously flows through the inside of the cooling water tank 2032, it is used to cool the rubber gasket belt.

[0104] S4. Auxiliary fixation: The fixed driving mechanism works synchronously to drive the movement of the pull rod 20410, continuously stretching the first spring 20412. After the limiting plate 2021 is adjusted in place, the limiting driving mechanism drives the limiting rod 2052 to move back, releasing the piston 20411. The piston 20411 is pulled under the elastic force of the first spring 20412, causing the suction cup 2048 to generate a negative pressure suction force on the vertical plate 2024, and performing auxiliary fixation on the vertical plate 2024.

[0105] In the step S4, the working principle of the fixed driving mechanism is as follows: The movable tooth plate 2042 meshes with the tooth groove 20316 on the rotating cylinder 20313. When the two limiting plates 2021 move towards each other, they drive the rotation of the rotating cylinder 20313. At this time, the rotating cylinder 20313 drives the movable tooth plate 2042 to move towards the side away from the vertical plate 2024. The movable tooth plate 2042 pulls the pull rod 20410 towards the side away from the piston 20411 through the vertical plate 2044, stretching the first spring 20412. When the positions of the two limiting plates 2021 are adjusted in place, the electromagnet 2055 is powered off, and the limiting rod 2052 moves back under the restoring force of the second spring 2053. At this time, the piston 20411 is released and moves towards the side close to the pull rod 20410 under the restoring force of the first spring 20412, causing the suction cup 2048 to generate a negative pressure suction force on the vertical plate 2024, which is used to perform auxiliary fixation on the limiting plate 2021.

[0106] In this embodiment, the smaller the distance between the two limiting plates 2021, the greater the moving distance of the pull rod 20410, and the greater the negative pressure suction force between the suction cup 2048 and the vertical plate 2024. And when the thickness of the forming cavity between the two limiting plates 2021 is smaller, the reaction force of the rubber raw material on the two limiting plates 2021 during extrusion is greater. And the smaller the thickness of the forming cavity between the two limiting plates 2021, the greater the auxiliary fixing force of the suction cup 2048 on the limiting plate 2021, improving the stability of the rubber gasket belt during processing.

[0107] In this embodiment, the adjustable extrusion head for processing the rubber gasket belt is installed on the extruder, such as Figure 12In the structure shown, the overall structure of the extruder includes a box body 1. Inside the box body 1, there is a mixing and extrusion chamber. Inside the mixing and extrusion chamber, there is a spiral feeder 5. On the inner wall of the box body 1, there is a heater 4 for heating the material. On the outer surface of the box body 1, near one side, a feed pipe 3 is installed. The feed pipe 3 is communicated with the mixing and extrusion chamber. On one side surface of the box body 1 away from the feed pipe 3, there is an extrusion port 6. A frame-shaped extrusion nozzle 2 is fixedly installed on the extrusion port 6, and the feed port 201 of the frame-shaped extrusion nozzle 2 is communicated with the extrusion port 6.

[0108] With such a design, during use, the staff adds the rubber raw material for processing the rubber gasket tape into the inside of the box body 1 from the feed pipe 3. Under the heating effect of the heater 4, the rubber raw material is heated into a molten state. Then, the rubber raw material is conveyed towards the side of the extrusion port 6 through the spiral feeder 5 and is extruded into the frame-shaped extrusion nozzle 2. At this time, a forming cavity is formed between two limiting plates 2021 inside the frame-shaped extrusion nozzle 2. After the rubber raw material is conveyed into the forming cavity, it is extruded. Inside the forming cavity, the rubber raw material is cooled and solidified, thereby forming and outputting the rubber gasket tape, which is convenient for use.

[0109] In this embodiment, the extruder is a prior art. Other models of rubber extruders can be used, and then the adjustable extrusion head for processing the rubber gasket tape is installed at the position of the extrusion port 6 for preparing the rubber gasket tape.

[0110] Example 2: As Figure 13 shown, based on the above-mentioned Example 1, in this Example 2, the adjustment drive assembly can also adopt Figure 13 the structure shown. The adjustment drive assembly includes a side box 2025 fixedly installed on one side of the frame-shaped extrusion nozzle 2. On the upper and lower sides of the side box 2025, two connecting rods 2027 are symmetrically and slidably installed. One end of the two connecting rods 2027 away from each other is fixedly connected to the corresponding vertical plate 2024. Inside the side box 2025, two sliding blocks 2026 are slidably installed. The two sliding blocks 2026 are respectively fixedly connected to the corresponding connecting rods 2027. Between the two sliding blocks 2026, there is a double-headed automatic telescopic rod 20210. The two telescopic ends of the double-headed automatic telescopic rod 20210 are respectively fixedly connected to the corresponding sliding blocks 2026.

[0111] The double-headed automatic telescopic rod 20210 is fixedly installed on a mounting plate 20211. The mounting plate 20211 is fixedly installed on the inner surface of the side box 2025. The double-headed automatic telescopic rod 20210 is fixedly installed inside the side box 2025 through the mounting plate 20211.

[0112] With such a design, when the double-headed automatic telescopic rod 20210 is activated to extend or retract its two telescopic ends, the two telescopic ends of the double-headed automatic telescopic rod 20210 can drive the sliding block 2026 and the connecting rod 2027 to move in the direction of approaching or moving away from each other. At this time, the two connecting rods 2027 drive the two limiting plates 2021 to move in the direction of approaching or moving away from each other through the two vertical plates 2024, realizing the automatic adjustment of the distance between the two limiting plates 2021.

[0113] In this embodiment, the double-headed automatic telescopic rod 20210 adopts one of an electric telescopic rod, a hydraulic cylinder or a telescopic cylinder.

[0114] As Figure 14 shown, in Embodiment 2, the double-headed automatic telescopic rod 20210 can also be replaced by two adjusting telescopic rods 20212. The two adjusting telescopic rods 20212 are symmetrically arranged, and the telescopic ends of the two adjusting telescopic rods 20212 are fixedly connected to the mutually remote side surfaces of the two sliding blocks 2026 respectively. The mounting ends of the two adjusting telescopic rods 20212 are fixedly installed on the inner side wall of the side box 2025.

[0115] The two adjusting telescopic rods 20212 are synchronously activated to extend or retract their telescopic ends to drive the two sliding blocks 2026 to move in the direction of moving away from or approaching each other. During the movement of the sliding block 2026, the two limiting plates 2021 are driven to move in the direction of approaching or moving away from each other through the connecting rod 2027 and the vertical plate 2024, which is convenient for use.

[0116] In Embodiment 2, the adjusting telescopic rod 20212 adopts one of an electric telescopic rod, a hydraulic cylinder or a telescopic cylinder.

[0117] Embodiment 3: As Figure 15-16 shown, based on the above Embodiment 1, in this Embodiment 3, the auxiliary fixing component 204 can also adopt Figure 15-16 the structure shown. The auxiliary fixing component 204 includes a fixing plate 2047 fixedly installed on the frame-shaped extrusion nozzle 2. A fixing cylinder 2049 is installed on the fixing plate 2047. A suction cup 2048 is arranged on the side of the fixing cylinder 2049 close to the vertical plate 2024. The end face of the suction cup 2048 contacts the outer surface of the vertical plate 2024. A piston 20411 is movably installed inside the fixing cylinder 2049. A pull rod 20410 is arranged on the side of the piston 20411 away from the suction cup 2048. A first spring 20412 is fixedly connected between the pull rod 20410 and the piston 20411. A driving telescopic rod 20413 is arranged on the frame-shaped extrusion nozzle 2. The telescopic end of the driving telescopic rod 20413 is fixedly connected to the end of the pull rod 20410 away from the piston 20411.

[0118] An installation seat 20414 is fixedly connected to the installation end of the driving telescopic rod 20413, and the installation seat 20414 is fixedly installed on the frame-shaped extrusion nozzle 2.

[0119] With such a design, when the driving telescopic rod 20413 is activated to retract its telescopic end, the pull rod 20410 is driven to move away from the piston 20411. At this time, the pull rod 20410 is used to stretch the first spring 20412. When the piston 20411 is released, the restoring force of the first spring 20412 pulls the piston 20411 to move, generating a negative pressure suction force at the suction cup 2048 for sucking the vertical plate 2024, so as to assist in fixing the position of the vertical plate 2024.

[0120] In this embodiment, the driving telescopic rod 20413 is one of an electric telescopic rod, a hydraulic cylinder or a telescopic cylinder.

[0121] In this embodiment, a side cylinder 2051 is installed on the fixed cylinder 2049. A limiting rod 2052 is movably installed inside the side cylinder 2051. A limiting telescopic rod 2056 is fixedly installed on the side cylinder 2051. The telescopic end of the limiting telescopic rod 2056 penetrates through the upper end surface of the side cylinder 2051 and is coaxially and fixedly connected with the limiting rod 2052.

[0122] The telescopic end of the limiting telescopic rod 2056 is in a sliding seal connection with the side cylinder 2051.

[0123] With such a design, in the initial state, the telescopic end of the limiting telescopic rod 2056 drives the limiting rod 2052 to be located inside the side cylinder 2051. At this time, the limiting rod 2052 will not block the piston 20411. When it is necessary to limit the piston 20411, the limiting telescopic rod 2056 is activated to extend its telescopic end to drive the limiting rod 2052 to move downward, so that the limiting rod 2052 enters the inside of the fixed cylinder 2049. At this time, the limiting rod 2052 is located on the side of the piston 20411 away from the vertical plate 2024. Furthermore, the movement of the piston 20411 can be limited by the limiting rod 2052, which is convenient for use.

[0124] In this embodiment, the limiting telescopic rod 2056 is one of an electric telescopic rod, a hydraulic cylinder or a telescopic cylinder.

[0125] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable extrusion head for rubber gasket strip processing, comprising a frame-shaped extrusion nozzle (2), with a feed inlet (201) and a discharge outlet (206) respectively arranged on both sides of the frame-shaped extrusion nozzle (2), characterized in that: A thickness adjustment component (202) is arranged inside the frame-shaped extrusion nozzle (2); The thickness adjustment component (202) includes two limiting plates (2021) that are symmetrically arranged and hermetically and slidably installed inside the frame-shaped extrusion nozzle (2). A vertical plate (2024) is fixedly installed on one side of the limiting plate (2021) close to the feed port (201). The setting directions of the upper and lower vertical plates (2024) are opposite. The mutually remote ends of the two vertical plates (2024) respectively slide through the outer side surface of the frame-shaped extrusion nozzle (2). A cooling control component (203) is arranged on the limiting plate (2021). An adjustment driving component is fixedly installed on the outer wall of the frame-shaped extrusion nozzle (2). The function of the adjustment driving component is to drive the two limiting plates (2021) to move relatively, so as to adjust the thickness of the forming cavity, and further adjust the extrusion thickness of the rubber gasket strip; The cooling control component (203) includes cooling water channels (2032) respectively opened inside the limiting plates (2021). Vertical tubes (2031) are fixedly installed at both ends of the cooling water channels (2032) on the two limiting plates (2021). The two vertical tubes (2031) on the same limiting plate (2021) respectively penetrate through the corresponding outer side surface of the frame-shaped extrusion nozzle (2). Flow control parts are arranged on both the upper and lower sides of the frame-shaped extrusion nozzle (2); The flow control part includes a cross bar (2033). The cross bar (2033) is fixedly connected to the ends of the two vertical tubes (2031). An empty groove (2034) is opened in the middle of the cross bar (2033). First water inlet channels (2035) and second water inlet channels (2036) are respectively opened on both sides of the empty groove (2034) inside the cross bar (2033); A rotating cylinder (20313) is hermetically and rotatably installed in the empty groove (2034). A first baffle (20311) is installed in the first water inlet channel (2035). A first sector-shaped water passing channel (20312) is opened on the first baffle (20311). A second baffle (20314) is installed in the rotating cylinder (20313). A second sector-shaped water passing channel (20315) is opened on the second baffle (20314). The second baffle (20314) is closely attached to the first baffle (20311); Fixed toothed plates (20317) are fixedly installed on both the upper and lower sides of the frame-shaped extrusion nozzle (2). The fixed toothed plates (20317) are in transmission connection with the rotating cylinder (20313) through meshing teeth; 2. The adjustable extrusion head for rubber mat belt processing according to claim 1, characterized in that: Flexible arc plates (2022) are fixedly installed on one side of the limiting plates (2021) close to the feed port (201). The other ends of the upper and lower flexible arc plates (2022) are respectively fixedly connected to the upper and lower inner walls of the frame-shaped extrusion nozzle (2). The flexible arc plates (2022) are in the shape of arc plates.

3. The adjustable extrusion head for rubber mat belt processing according to claim 2, characterized in that: The adjustment driving assembly includes a side box (2025) fixedly installed on at least one side of the frame-shaped extrusion nozzle (2). Connecting rods (2027) are symmetrically and slidably installed on the upper and lower sides of the side box (2025) respectively. The mutually remote ends of the two connecting rods (2027) are fixedly connected to the corresponding vertical plates (2024). An adjustment driving mechanism for driving the two connecting rods (2027) to move towards or away from each other is installed inside the side box (2025).

4. An adjustable extrusion head for processing rubber pad belts according to claim 3, characterized in that: A first connecting pipe (2037) and a second connecting pipe (2039) are installed at the top of the cross bar (2033). The first connecting pipe (2037) is communicated with a vertical pipe (2031) for water inlet through a second water inlet groove (2036) and a first water inlet groove (2035). The second connecting pipe (2039) is communicated with the vertical pipe (2031) for water return through a return groove (2038) formed inside the cross bar (2033).

5. The adjustable extrusion head for processing rubber pad belts according to claim 4, wherein: End plates (20310) are arranged on both sides of the empty groove (2034). The two end plates (20310) are in sealed and rotational connection with the rotating cylinder (20313).

6. An adjustable extrusion head for rubber mat belt processing according to claim 5, characterized in that: An auxiliary fixing assembly (204) is arranged between the rotating cylinder (20313) and the vertical plate (2024). The auxiliary fixing assembly (204) is used for auxiliary fixing of the position of the vertical plate (2024).

7. An adjustable extrusion head for rubber mat belt processing according to claim 6, characterized in that: The auxiliary fixing assembly (204) includes a fixing plate (2047) fixedly installed on the frame-shaped extrusion nozzle (2). A fixing cylinder (2049) is installed on the fixing plate (2047). A suction cup (2048) is arranged on the side of the fixing cylinder (2049) close to the vertical plate (2024). The end face of the suction cup (2048) is in contact with the outer surface of the vertical plate (2024). A piston (20411) is movably installed inside the fixing cylinder (2049). A pull rod (20410) is arranged on the side of the piston (20411) remote from the suction cup (2048). A first spring (20412) is fixedly connected between the pull rod (20410) and the piston (20411). A fixing driving mechanism for driving the pull rod (20410) to move is arranged on the frame-shaped extrusion nozzle (2).

8. An adjustable extrusion head for rubber mat belt processing according to claim 7, characterized in that: A limit control assembly (205) is installed on the fixing cylinder (2049). The limit control assembly (205) includes a side cylinder (2051) fixedly installed on the outer wall of the fixing cylinder (2049). A limit rod (2052) is movably installed inside the side cylinder (2051). After the limit rod (2052) enters the fixing cylinder (2049), the limit rod (2052) limits the movement of the piston (20411). A limit driving mechanism for driving the limit rod (2052) to move is fixedly installed on the side cylinder (2051).

9. A working method of an adjustable extrusion head for rubber gasket strip processing, based on the adjustable extrusion head for rubber gasket strip processing described in claim 8, characterized in that: The working method includes the following steps: S1. Limiting: First, start the limit driving mechanism to drive the limit rod (2052) to move into the fixing cylinder (2049) to limit the piston (20411). S2. Thickness adjustment: The adjustment driving mechanism is started synchronously to drive the two connecting rods (2027) to drive the upper and lower limiting plates (2021) through the vertical plate (2024) to move towards each other, so as to adjust the thickness of the forming cavity between the two limiting plates (2021); S3. Cooling adjustment: When the upper and lower limiting plates (2021) move towards each other, the rotating cylinder (20313) rotates in cooperation with the fixed toothed plate (20317), so that the overlapping area of the first sector water passage (20312) and the second sector water passage (20315) continuously decreases, and the flow rate of the cooling water relatively decreases; S4. Auxiliary fixation: The fixed driving mechanism works synchronously to drive the pull rod (20410) to move, so that the first spring (20412) is continuously stretched. After the limiting plate (2021) is adjusted in place, the limiting driving mechanism drives the limiting rod (2052) to move back, so that the piston (20411) is released. The piston (20411) is pulled under the elastic force of the first spring (20412), so that the suction cup (2048) generates a negative pressure suction force on the vertical plate (2024) to assist in fixing the vertical plate (2024).

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