Extrusion device for silicone rubber production

Abstract

The extrusion device for silicone rubber production comprises a workbench, an extrusion mechanism, a feeding hopper, a smashing device and a driving device, the extrusion mechanism is installed on the workbench, the feeding hopper is installed at a feeding opening of the extrusion mechanism, the smashing device is installed in the feeding hopper, and the driving device is installed on the workbench. The driving device is mounted on the workbench; the output end of the driving device is connected with the extruding mechanism and the crushing device; and the driving device is suitable for driving the extrusion mechanism to extrude products, and is also suitable for driving the crushing device to crush the raw materials in the feeding hopper. The silicon rubber extruder has the beneficial effects that the crushing device can crush a silicon rubber raw material in the feeding hopper, so that the raw material in the feeding hopper can enter the feeding opening more smoothly, and smooth extrusion operation is ensured; and the crushing device and the extruding mechanism share one driving device, so that energy consumption can be saved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of silicone rubber production, and in particular to an extrusion device for silicone rubber production. Background Art

[0002] Silicone rubber was first synthesized with ferric chloride as a catalyst, and due to its unique molecular structure, silicone rubber has better heat resistance, electrical insulation, chemical stability, etc. than other general rubbers. Silicone rubber sealing strips are one of the important parts of automobiles, widely used in doors, windows, bodies, sunroofs, engine boxes and trunks (luggage) boxes, etc., with the functions of sound insulation, dustproof, water seepage prevention and shock absorption. The silicone rubber sealing strips of automobiles require an extruder in the production process.

[0003] In the existing extruder, the feeding port is generally small, so the rubber needs to be sheared in advance when feeding, so that it can be fed better. However, the sheared rubber is also easy to accumulate and adhere to form a lump, which makes it difficult for the extruder to feed well. Therefore, an extrusion device for silicone rubber production is proposed to solve the above technical problems. Utility Model Content

[0004] One of the purposes of the present application is to provide an extrusion device for silicone rubber production.

[0005] In order to achieve the above purpose, the technical solution adopted in the present application is: an extrusion device for silicone rubber production, comprising a workbench, an extrusion mechanism, a feeding hopper, a crushing device and a driving device, the extrusion mechanism is installed on the workbench, the feeding hopper is installed at the feeding port of the extrusion mechanism, the crushing device is installed in the feeding hopper, the driving device is installed on the workbench and the output end is connected to the extrusion mechanism and the crushing device; the driving device is suitable for driving the extrusion mechanism to extrude the product, and the driving device is also suitable for driving the crushing device to crush the raw materials in the feeding hopper.

[0006] Preferably, the crushing device includes a crushing roller and a transmission assembly, the crushing roller is rotatably installed in the feeding hopper, the input end of the transmission assembly is connected to the output end of the driving device, and the output end of the transmission assembly is connected to the crushing roller; the driving device is suitable for driving the crushing roller to rotate through the transmission assembly.

[0007] Preferably, the crushing rollers are a pair, the two crushing rollers are arranged in parallel and cooperated through a transmission structure; the driving device is suitable for driving one of the crushing rollers to rotate through the transmission assembly, and then the two crushing rollers rotate relatively under the action of the transmission structure.

[0008] Preferably, the transmission structure comprises a pair of gears, and the gears are correspondingly mounted on the crushing rollers; the crushing rollers rotate relatively under the meshing transmission of the gears.

[0009] Preferably, the transmission assembly includes pulley 1, pulley 2 and a transmission belt, pulley 1 is installed on the output end of the driving device, pulley 2 is installed on one of the crushing rollers, and the transmission belt is commonly sleeved on the outside of pulley 1 and pulley 2.

[0010] Preferably, the extrusion mechanism includes a barrel, a first screw and a second screw, the barrel is installed on the workbench, the first screw and the second screw are both rotatably installed on the barrel and cooperate with each other, the pitch of the first screw is smaller than the pitch of the second screw, and the first screw and the second screw are connected and cooperated with the output end of the driving device through a differential device.

[0011] Preferably, the differential device includes a first reducer and a second reducer, the output end of the first reducer is connected to the first screw, and the input end of the first reducer is transmission connected to the output end of the drive device; the output end of the second reducer is connected to the second screw, and the input end of the second reducer is transmission connected to the output end of the drive device.

[0012] Preferably, a discharge barrel is installed at the discharge port of the extrusion mechanism, a mesh plate is installed inside the discharge barrel, and an air pump cooperating with the discharge barrel is installed outside the discharge barrel.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] The utility model is provided with a crushing device, which can crush the silicone rubber raw materials in the feeding hopper, so that the raw materials in the feeding hopper can enter the feeding port more smoothly, thereby ensuring the smooth progress of the extrusion operation; and the crushing device and the extrusion mechanism share a driving device, thereby saving energy consumption and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the transmission component structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the transmission structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the differential device and the twin screw of the utility model.

[0019] Figure 5 It is a schematic diagram of the internal structure of the discharge barrel of the utility model.

[0020] In the figure: 1. workbench; 2. extrusion mechanism; 201. barrel; 202. first screw; 203. second screw; 3. feeding hopper; 4. crushing device; 401. transmission assembly; 4011. pulley 1; 4012. pulley 2; 4013. transmission belt; 402. crushing roller; 5. transmission structure; 501. gear; 6. differential device; 601. first reducer; 602. second reducer; 7. discharge barrel; 8. mesh plate; 9. air pump; 10. driving device. DETAILED DESCRIPTION

[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] One of the preferred embodiments of the present application is as follows: Figures 1 to 5 As shown, an extrusion device for silicone rubber production includes a workbench 1, an extrusion mechanism 2, a feeding hopper 3, a crushing device 4 and a driving device 10. The extrusion mechanism 2 is installed on the workbench 1, the feeding hopper 3 is installed at the feeding port of the extrusion mechanism 2, the crushing device 4 is installed in the feeding hopper 3, and the driving device 10 is installed on the workbench 1 and the output end is connected with the extrusion mechanism 2 and the crushing device 4.

[0025] It can be understood that when the extrusion operation is performed, the silicone rubber raw material is placed in the feeding hopper 3, and then the device is started. At this time, the driving device 10 can drive the extrusion mechanism 2 to perform the extrusion operation, that is, to extrude the silicone rubber product; of course, at this time, the driving device 10 can also drive the crushing device 4 to crush the silicone rubber raw material in the feeding hopper 3, so that the raw material in the feeding hopper 3 can enter the feeding port more smoothly, thereby ensuring the smooth progress of the extrusion operation.

[0026] It can be seen that the crushing device 4 can improve the feeding efficiency of the extruder. At the same time, the crushing device 4 and the extrusion mechanism 2 share a driving device 10, thereby saving energy consumption and reducing production costs.

[0027] In one of the embodiments of the present application, Figure 2 As shown, the crushing device 4 includes a crushing roller 402 and a transmission assembly 401. The crushing roller 402 is rotatably installed in the feeding hopper 3. The input end of the transmission assembly 401 is connected to the output end of the driving device 10, and the output end of the transmission assembly 401 is connected to the crushing roller 402. It can be understood that when the extrusion operation is performed, the driving device 10 can drive the crushing roller 402 to rotate through the transmission assembly 401, that is, the silicone rubber raw material in the feeding hopper 3 is crushed by the rotation of the crushing roller 402.

[0028] Furthermore, in order to improve the efficiency and effect of crushing the silicone rubber raw materials, Figure 3 As shown, the crushing rollers 402 are preferably provided in pair, that is, the two crushing rollers 402 are arranged in parallel and matched through the transmission structure 5.

[0029] It can be understood that the driving device 10 can drive one of the crushing rollers 402 to rotate through the transmission component 401, and then under the action of the transmission structure 5, the two crushing rollers 402 can rotate synchronously relative to each other, and then the silicone rubber raw material can be crushed under the action of the two crushing rollers 402, so that the crushing efficiency is greatly improved.

[0030] As a further description of the above embodiment: Figure 3 As shown, the transmission structure 5 includes a pair of gears 501, and the gears 501 are correspondingly mounted on the crushing rollers 402. It should be known that when one of the crushing rollers 402 rotates, the two crushing rollers 402 can rotate relative to each other under the meshing transmission of the two gears 501, thereby realizing rapid crushing of the silicone rubber raw material.

[0031] In this embodiment, Figure 2As shown, the present application does not limit the specific structure of the transmission component 401, and only one specific structure is provided below for reference: the transmission component 401 includes a pulley 1 4011, a pulley 2 4012 and a transmission belt 4013, the pulley 1 4011 is installed at the output end of the driving device 10, the pulley 2 4012 is installed on one of the crushing rollers 402, and the outer parts of the pulley 1 4011 and the pulley 2 4012 are jointly sleeved with the transmission belt 4013.

[0032] It should be noted that the driving device 10 is common knowledge known to those skilled in the art, and can be a motor, a rotary cylinder or a rotary hydraulic cylinder, etc., and a motor is preferably used here. It should be further known that the motor drives the pulley 1 4011 to rotate, and the pulley 1 4011 drives the pulley 2 4012 to rotate through the transmission belt 4013, and the pulley 2 4012 can drive one of the crushing rollers 402 to rotate, and then under the meshing transmission of the matching gear 501, the two crushing rollers 402 can be relatively rotated, thereby realizing the rapid crushing of the silicone rubber raw material.

[0033] In the prior art, high temperature vulcanized silicone rubber refers to the process of polysiloxane becoming an elastomer through high temperature (110-170°C) vulcanization molding. It mainly uses high molecular weight polymethylvinylsiloxane as raw rubber, mixed with reinforcing fillers, vulcanizers, etc., and vulcanized into an elastomer under heating and pressure. Since the production process of silicone rubber requires vulcanization at a relatively high temperature, bubbles are easily generated during the vulcanization process of silicone rubber, which in turn affects the subsequent extrusion and molding quality of the rubber raw materials.

[0034] Therefore, in order to solve the above technical problems, Figure 4 As shown, the extrusion mechanism 2 includes a barrel 201, a first screw 202 and a second screw 203. The barrel 201 is installed on the workbench 1. The first screw 202 and the second screw 203 are both rotatably installed on the barrel 201 and cooperate with each other. The pitch of the first screw 202 is smaller than the pitch of the second screw 203. The first screw 202 and the second screw 203 are connected and cooperated with the output end of the driving device 10 through the differential device 6.

[0035] It is understandable that at this time, the two extrusion screws will have a certain differential speed when running. By utilizing the differential speed of the two screws, the silicone rubber will be fully squeezed by the two threads during the movement, thereby discharging the internal gas. Of course, an exhaust port can be provided on the outside of the barrel 201 to ensure the uniform density of the extruded product. This design can effectively improve the surface quality and performance stability of silicone rubber products, and can also speed up production speed and improve production efficiency.

[0036] Specifically, the differential device 6 includes a first reducer 601 and a second reducer 602. The output end of the first reducer 601 is connected to the first screw 202, and the input end of the first reducer 601 is transmission connected to the output end of the driving device 10; the output end of the second reducer 602 is connected to the second screw 203, and the input end of the second reducer 602 is transmission connected to the output end of the driving device 10.

[0037] It should be noted that the transmission connection between the two reducers and the driving device 10 can adopt the above-mentioned transmission structure 5 or transmission assembly 401, that is, a belt drive or a gear drive.

[0038] Furthermore, in order to further improve the gas extrusion inside the silicone rubber, as Figure 5 As shown, a discharge barrel 7 is installed at the discharge port of the extrusion mechanism 2 (barrel 201 ), a mesh plate 8 is installed inside the discharge barrel 7 , and an air pump 9 matched with the discharge barrel 7 is installed outside the discharge barrel 7 .

[0039] It can be understood that as the extrusion mechanism 2 extrude the silicone rubber from the discharge port, the silicone rubber will pass through the mesh plate 8 under the action of the extrusion force, so that the bubbles in the rubber raw material can be exposed, and then the air pump 9 is started to extract the gas, thereby effectively removing the bubbles in the rubber raw material and improving the rubber quality. The rubber raw material after degassing can be discharged through the discharge pipe on the right side of the discharge barrel 7.

[0040] It can be seen that the dual degassing effect of the differential twin screws, the mesh plate 8 and the air pump 9 can greatly improve the gas discharge rate and effect in the silicone rubber, thereby improving the quality and performance of silicone rubber products.

[0041] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An extrusion device for silicone rubber production, characterized in that: include: Workbench; An extrusion mechanism, the extrusion mechanism is mounted on the workbench; A feeding hopper, the feeding hopper being installed at a feeding port of the extrusion mechanism; A crushing device, the crushing device is installed in the feeding hopper; as well as A driving device is installed on the workbench and an output end of the driving device is connected to the extrusion mechanism and the pulverizing device; the driving device is suitable for driving the extrusion mechanism to extrude the product, and the driving device is also suitable for driving the pulverizing device to pulverize the raw materials in the feeding hopper.

2. The extrusion device for silicone rubber production according to claim 1, characterized in that: The pulverizing device comprises a pulverizing roller and a transmission assembly. The pulverizing roller is rotatably installed in the feeding hopper. The input end of the transmission assembly is connected to the output end of the driving device, and the output end of the transmission assembly is connected to the pulverizing roller. The driving device is suitable for driving the pulverizing roller to rotate through the transmission assembly.

3. The extrusion device for silicone rubber production as claimed in claim 2, characterized in that: The crushing rollers are in pair, and the two crushing rollers are arranged in parallel and matched with each other through a transmission structure; the driving device is suitable for driving one of the crushing rollers to rotate through the transmission assembly, and then the two crushing rollers rotate relatively under the action of the transmission structure.

4. The extrusion device for silicone rubber production as claimed in claim 3, characterized in that: The transmission structure comprises a pair of gears, and the gears are correspondingly mounted on the crushing rollers; the crushing rollers rotate relatively under the meshing transmission of the gears.

5. The extrusion device for silicone rubber production as claimed in claim 4, characterized in that: The transmission assembly includes a first pulley, a second pulley and a transmission belt. The first pulley is installed at the output end of the driving device, the second pulley is installed on one of the crushing rollers, and the transmission belt is commonly sleeved on the outside of the first pulley and the second pulley.

6. The extrusion device for silicone rubber production according to any one of claims 1 to 5, characterized in that: The extrusion mechanism includes a barrel, a first screw and a second screw. The barrel is installed on the workbench. The first screw and the second screw are both rotatably installed on the barrel and cooperate with each other. The pitch of the first screw is smaller than the pitch of the second screw. The first screw and the second screw are connected and cooperated with the output end of the driving device through a differential device.

7. The extrusion device for silicone rubber production according to claim 6, characterized in that: The differential device includes a first reducer and a second reducer, the output end of the first reducer is connected to the first screw rod, and the input end of the first reducer is transmission connected to the output end of the drive device; the output end of the second reducer is connected to the second screw rod, and the input end of the second reducer is transmission connected to the output end of the drive device.

8. The extrusion device for silicone rubber production according to claim 7, characterized in that: A discharge barrel is installed at the discharge port of the extrusion mechanism, a mesh plate is installed inside the discharge barrel, and an air pump matched with the discharge barrel is installed outside the discharge barrel.

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