Extrusion equipment for producing sealing rubber strip

Abstract

The utility model relates to the technical field of glue strip extruder discloses an extrusion equipment for sealant strip production, which comprises a machine body, an extrusion channel defined inside, a screw conveyor rotatably matched in the extrusion channel, an extrusion pipe connected to the front end of the extrusion channel, and a feed hopper connected to the top end of the machine body, wherein the top end of the machine body is connected to a dredging pipe, the dredging pipe is located on the side of the feed hopper close to the extrusion pipe, a servo oil cylinder is arranged on one side of the machine body, the piston end of the servo oil cylinder is connected to the screw conveyor, so that the screw conveyor moves along the axis direction of the extrusion channel, a driving assembly is arranged on the machine body, and the driving end of the driving assembly is connected to the screw conveyor. The utility model can improve the dredging effect of the blocked extruder and ensure the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rubber strip extruder technology, and in particular to an extrusion device for producing sealing rubber strips. Background Technology

[0002] In the processing of sealing strips, rubber extruders play a crucial role. However, in common rubber extruders, the internal auger rotates while electric heating elements melt rubber granules, propelling the rubber along the extrusion tube to form a strip structure upon cooling. During extrusion, however, residual rubber from the previous extrusion can solidify inside the extrusion tube, clogging it due to the inability to heat it. The conventional method is to reverse the auger to clear this blockage. However, if the blockage is severe, the motor's overload protection can cause it to stop, affecting extrusion and clearing efficiency. Furthermore, reversing the flow of rubber mixture can cause it to re-enter the feed hopper, affecting the normal feeding of rubber granules in subsequent extrusions. Therefore, a sealing strip extrusion device is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide an extrusion device for producing sealing strips, so as to solve the problems existing in the prior art, improve the unblocking effect of the extruder, and ensure production efficiency.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides an extrusion device for producing sealing strips, comprising:

[0005] The machine body has an internally defined extrusion channel, in which an auger is rotatably fitted. The front end of the extrusion channel is connected to an extrusion pipe, and the top end of the machine body is connected to a feed hopper. The top end of the machine body is connected to a dredging pipe, which is located on the side of the feed hopper closer to the extrusion pipe.

[0006] A servo cylinder is disposed on one side of the machine body, and the piston end of the servo cylinder is connected to the auger so that the auger moves along the axis of the extrusion channel. A drive assembly is disposed on the machine body, and the drive end of the drive assembly is connected to the auger.

[0007] Preferably, the driving component includes:

[0008] A drive housing is fixedly connected to the side of the machine body away from the extrusion tube. A drive motor is fixedly connected to the outer wall of the drive housing. A drive gear is fixedly connected to the output shaft of the drive motor. A transmission gear meshes with one side of the drive gear. The transmission gear is rotatably connected inside the drive housing and coaxially drives the auger.

[0009] Preferred options also include:

[0010] A transmission rod is rotatably connected inside the drive housing, with one end extending into the extrusion channel and coaxially fixed to the auger. The transmission gear is sleeved and fixed to the outer wall of the transmission rod. A connecting plate is fixed to the end of the transmission rod away from the machine body. The servo cylinder is fixed to the outer wall of the drive housing. The piston end of the servo cylinder extends into the drive housing and is fixed to a sleeve. A slot is provided on the inner side wall of the sleeve. The connecting plate engages with the slot and is rotatably connected to the sleeve.

[0011] Preferably, the transmission gear is a long gear structure, the transmission gear is slidably connected to the drive gear, and the farthest distance between the connecting plate and the servo cylinder is less than the length of the transmission gear.

[0012] Preferably, a baffle is fixedly connected to the side of the extrusion channel near the transmission rod, the transmission rod passes through the baffle and slides with the baffle, a support ring is fixedly connected to the side wall of the baffle, the support ring is used to contact the side wall of the adjacent transmission gear, and the contact surface between the support ring and the transmission gear is an arc-shaped structure.

[0013] Preferably, the output shaft of the drive motor is fixedly connected to the shaft of the drive gear via a coupling, and the diameter of the coupling is smaller than the diameter of the drive gear.

[0014] Preferably, a connecting flange is fixedly connected to the top end of the unblocking pipe, and a cover plate is detachably connected to the connecting flange.

[0015] The present invention discloses the following technical effects:

[0016] This invention utilizes a rotating auger connected within the extrusion channel to move and extrude rubber granules. A drainage pipe is connected to the front end of the feed hopper, positioned between the extrusion pipe and the feed hopper. When the auger moves the rubber mixture in the reverse direction, the returned rubber mixture can be discharged through the drainage pipe, preventing residual rubber mixture in the extrusion channel from entering the feed hopper and affecting the feeding of rubber granules during subsequent sealing strip extrusion. This improves the drainage effect of the extrusion channel. Furthermore, a drive assembly drives the auger to rotate, providing it with rotational conveying force. A servo cylinder connected to the auger also drives the auger to move along the axis of the extrusion channel, achieving the movement and drainage of residual rubber mixture. This avoids overload shutdown of the drive assembly due to direct high-intensity load, ensuring normal extrusion production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the body of this utility model;

[0019] Figure 2 This is a diagram showing the connection relationship between the auger and the transmission gear in this utility model;

[0020] Figure 3 This is a diagram showing the connection relationship between the drive gear and the transmission gear in this utility model;

[0021] Figure 4 This is a structural schematic diagram of the transmission rod and connecting plate of this utility model;

[0022] Figure 5 This is a diagram showing the connection relationship between the connecting plate and the sleeve in this utility model;

[0023] The components are as follows: 1. Machine body; 2. Screwdriver; 3. Extrusion tube; 4. Feed hopper; 5. Unblocking pipe; 6. Servo cylinder; 7. Electric heating element; 8. Drive housing; 9. Drive motor; 10. Drive gear; 11. Transmission gear; 12. Transmission rod; 13. Connecting plate; 14. Sleeve; 15. Baffle; 16. Support ring; 17. Sealing ring; 18. Coupling; 19. Connecting flange; 20. Cover plate; 21. Lubrication groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-5 This utility model provides an extrusion device for producing sealing strips, comprising:

[0027] The machine body 1 has an internally defined extrusion channel, and an auger 2 is rotatably fitted inside the extrusion channel. The front end of the extrusion channel is connected to an extrusion pipe 3, and the top end of the machine body 1 is connected to a feed hopper 4. The top end of the machine body 1 is connected to a dredging pipe 5, which is located on the side of the feed hopper 4 close to the extrusion pipe 3.

[0028] A servo cylinder 6 is located on one side of the machine body 1, and the piston end of the servo cylinder 6 is connected to the auger 2 so that the auger 2 moves along the axis of the extrusion channel. A drive assembly is provided on the machine body 1, and the drive end of the drive assembly is connected to the auger 2.

[0029] This invention uses a rotating auger 2 connected within the extrusion channel to move and extrude rubber granules. A drain pipe 5 is connected to the front end of the feed hopper 4, positioned between the extrusion pipe 3 and the feed hopper 4. When the auger 2 moves the rubber mixture in the reverse direction, the returned rubber mixture can be discharged through the drain pipe 5, preventing residual rubber mixture in the extrusion channel from entering the feed hopper 4 and affecting the feeding of rubber granules during subsequent sealing strip extrusion. This improves the unblocking effect of the extrusion channel. Furthermore, the auger 2 is driven to rotate by a drive assembly, giving it rotational conveying force. A servo cylinder 6 connected to the auger 2 also drives it to move along the axis of the extrusion channel, achieving the movement and unblocking of residual rubber mixture. This avoids overload and shutdown of the drive assembly due to direct high-intensity loads, ensuring normal extrusion production efficiency.

[0030] Specifically, an electric heating element 7 is fixedly connected inside the machine body 1, and the electric heating element 7 is fixedly connected to both sides of the extrusion channel. By acting on the heating inside the extrusion channel, the production requirements of the sealing strip extrusion are met.

[0031] Furthermore, the driving components include:

[0032] The drive housing 8 is fixedly connected to the side of the machine body 1 away from the extrusion tube 3. The drive motor 9 is fixedly connected to the outer wall of the drive housing 8. The drive gear 10 is fixedly connected to the output shaft of the drive motor 9. The drive gear 10 is meshed with a transmission gear 11 on one side. The transmission gear 11 is rotated inside the drive housing 8 and coaxially drives the auger 2.

[0033] The drive housing 8 provides rotational support for the drive gear 10 and the transmission gear 11. The drive motor 9 provides driving force to the drive gear 10. The drive gear 10 and the transmission gear 11 mesh with each other, and the transmission gear 11 is coaxially driven with the auger 2 to achieve rotational drive of the auger 2.

[0034] Furthermore, it also includes:

[0035] The transmission rod 12 is connected inside the drive housing 8, and one end extends into the extrusion channel and is coaxially fixed to the auger 2. The transmission gear 11 is sleeved and fixed to the outer wall of the transmission rod 12. The end of the transmission rod 12 away from the machine body 1 is fixed to the connecting plate 13. The servo cylinder 6 is fixed to the outer wall of the drive housing 8. The piston end of the servo cylinder 6 extends into the drive housing 8 and is fixed to the sleeve 14. The inner side wall of the sleeve 14 is provided with a slot. The connecting plate 13 is engaged with the slot, and the connecting plate 13 is rotatably connected to the sleeve 14.

[0036] Specifically, a lubrication groove 21 is provided on the outer periphery of the connecting plate 13, and lubricating oil is injected into the lubrication groove 21. The lubricating oil is contained by the cooperation of the lubrication groove 21 and the slot, thereby reducing the rotational friction between the connecting plate 13 and the sleeve 14.

[0037] In this technical solution, the connecting plate 13 fixed to the end of the transmission rod 12 is engaged with the sleeve 14 fixed to the piston end of the servo cylinder 6, so that the transmission rod 12 and the piston end of the servo cylinder 6 are relatively fixed. The transmission rod 12 is rotated with the sleeve 14 through the connecting plate 13. As the drive gear 10 provides rotational power, the transmission gear 11 drives the transmission rod 12 and the auger 2 to rotate, thereby increasing the extrusion force. When it is necessary to clear the extrusion channel, the servo cylinder 6 provides driving force, and the transmission rod 12 drives the auger 2 to move in the extrusion channel to clear the residual rubber mixture. The high load-bearing capacity of the servo cylinder 6 ensures the clearing effect.

[0038] Furthermore, the transmission gear 11 is a long gear structure, and the transmission gear 11 is slidably connected to the drive gear 10. The farthest distance between the connecting plate 13 and the servo cylinder 6 is less than the length of the transmission gear 11.

[0039] By designing the transmission gear 11 as a long gear structure, and ensuring that the length of the transmission gear 11 remains engaged during the sliding process relative to the drive gear 10, the transmission rod 12 drives the auger 2 to move when the servo cylinder 6 moves the connecting plate 13. At the same time, the drive gear 10 can drive the auger 2 to rotate. With the continuous movement of the servo cylinder 6, the residual rubber mixture can be loosened first. Then, by rotating the auger 2 in the opposite direction, the efficiency of clearing the rubber mixture can be effectively improved.

[0040] Furthermore, a baffle 15 is fixedly connected to the side of the extrusion channel near the transmission rod 12. The transmission rod 12 passes through the baffle 15 and slides against it. A support ring 16 is fixedly connected to the side wall of the baffle 15. The support ring 16 is used to contact the side wall of the adjacent transmission gear 11, and the contact surface between the support ring 16 and the transmission gear 11 is arc-shaped. This reduces the contact friction between the support ring 16 and the transmission gear 11.

[0041] In this technical solution, the baffle 15 has a through hole, and a sealing ring 17 is fixedly connected in the through hole. The transmission rod 12 passes through the inner ring side of the sealing ring 17 and slides in contact with the inner ring side of the sealing ring 17, ensuring the effect of the servo cylinder 6 driving the transmission rod 12 to move the auger 2. During the movement of the auger 2, it is only necessary to slowly move back and forth along the axis of the extrusion channel to loosen the solidified rubber mixture. The sealing ring 17 is made of common metal material. Since the rubber particles are sent out from the feed hopper 4 and move along the direction of the extrusion tube 3 under the rotation of the auger 2, the sealing ring 17 and the outer peripheral side of the transmission rod 12 can slide in contact to maintain sliding support.

[0042] Furthermore, the output shaft of the drive motor 9 is fixedly connected to the shaft of the drive gear 10 via a coupling 18, and the diameter of the coupling 18 is smaller than the diameter of the drive gear 10.

[0043] The transmission torque of the drive motor 9 is increased by the coupling 18, which ensures the transmission effect between the drive gear 10 and the transmission gear 11. In addition, the diameter of the drive gear 10 is larger than that of the coupling 18, which can prevent the transmission gear 11 from colliding with the coupling 18 during the movement.

[0044] Furthermore, a connecting flange 19 is fixedly connected to the top of the unblocking pipe 5, and a cover plate 20 is detachably connected to the connecting flange 19.

[0045] The cover plate 20 is fixed to the unblocking pipe 5 by connecting flange 19. When unblocking the residual rubber mixture, the cover plate 20 is disassembled and opened. The rubber mixture in the extrusion channel can be discharged along the unblocking pipe 5 by connecting a suction pump or other structure.

[0046] This utility model provides the working principle of an extrusion device for producing sealing strips:

[0047] As the extrusion of the sealing strip stops, the residual rubber mixture solidifies in the extrusion channel. When extrusion production needs to be restarted, the servo cylinder 6 is activated. The sleeve 14 and the connecting plate 13 are fixed relative to each other, so that the piston end of the servo cylinder 6 is fixed to the transmission rod 12. This drives the auger 2 to move back and forth along the axis of the extrusion channel, thereby loosening the residual rubber mixture. The cover plate 20 is opened through the connecting flange 19, and the suction pump is connected to the unblocking pipe 5. During the loosening process, the rubber mixture is heated and melted by the electric heating element 7. Then, the auger 2 is rotated in the opposite direction to transport the rubber mixture near the extrusion pipe 3 to the unblocking pipe 5 and discharged from the unblocking pipe 5. This avoids affecting the normal feeding of rubber particles by the feed hopper 4. After no residual rubber mixture is discharged from the end of the extrusion pipe 3 and the unblocking pipe 5, the unblocking machine 1 is stopped, and the cover plate 20 is reconnected to the connecting flange 19 to seal the unblocking pipe 5. At the same time, the servo cylinder 6 drives the auger 2 to move towards the extrusion pipe 3 to the farthest end, and the next extrusion of the sealing strip can be carried out.

[0048] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An extrusion device for producing sealing strips, characterized in that, include: The machine body (1) has an internally defined extrusion channel, and an auger (2) is rotatably fitted inside the extrusion channel. The front end of the extrusion channel is connected to an extrusion tube (3), and the top end of the machine body (1) is connected to a feed hopper (4). The top end of the machine body (1) is connected to a drain pipe (5), and the drain pipe (5) is located on the side of the feed hopper (4) close to the extrusion tube (3). A servo cylinder (6) is provided on one side of the machine body (1), and the piston end of the servo cylinder (6) is connected to the auger (2) so that the auger (2) moves along the axis of the extrusion channel. A drive assembly is provided on the machine body (1), and the drive end of the drive assembly is connected to the auger (2).

2. The extrusion equipment for producing sealing strips according to claim 1, characterized in that, The driving component includes: A drive housing (8) is fixed to the side of the machine body (1) away from the extrusion tube (3). A drive motor (9) is fixed to the outer wall of the drive housing (8). A drive gear (10) is fixed to the output shaft of the drive motor (9). A transmission gear (11) meshes with one side of the drive gear (10). The transmission gear (11) is rotated inside the drive housing (8) and coaxially drives the auger (2).

3. The extrusion equipment for producing sealing strips according to claim 2, characterized in that, Also includes: The transmission rod (12) is connected to the drive housing (8) and one end extends into the extrusion channel and is coaxially fixed to the auger (2). The transmission gear (11) is sleeved and fixed to the outer wall of the transmission rod (12). A connecting plate (13) is fixed to the end of the transmission rod (12) away from the machine body (1). The servo cylinder (6) is fixed to the outer wall of the drive housing (8). The piston end of the servo cylinder (6) extends into the drive housing (8) and is fixed to a sleeve (14). A slot is opened on the inner side wall of the sleeve (14). The connecting plate (13) is engaged with the slot, and the connecting plate (13) is rotatably connected to the sleeve (14).

4. The extrusion equipment for producing sealing strips according to claim 3, characterized in that: The transmission gear (11) is a long gear structure. The transmission gear (11) is slidably connected to the drive gear (10). The farthest distance between the connecting plate (13) and the servo cylinder (6) is less than the length of the transmission gear (11).

5. The extrusion equipment for producing sealing strips according to claim 3, characterized in that: A baffle (15) is fixedly connected to the side of the extrusion channel near the transmission rod (12). The transmission rod (12) passes through the baffle (15) and slides with the baffle (15). A support ring (16) is fixedly connected to the side wall of the baffle (15). The support ring (16) is used to contact the side wall of the adjacent transmission gear (11), and the contact surface between the support ring (16) and the transmission gear (11) is an arc-shaped structure.

6. The extrusion equipment for producing sealing strips according to claim 2, characterized in that: The output shaft of the drive motor (9) is fixedly connected to the shaft of the drive gear (10) via a coupling (18), and the diameter of the coupling (18) is smaller than the diameter of the drive gear (10).

7. The extrusion equipment for producing sealing strips according to claim 1, characterized in that: The top end of the unblocking pipe (5) is fixed with a connecting flange (19), and a cover plate (20) is detachably connected to the connecting flange (19).

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