Rubber strip extrusion device

Abstract

The utility model relates to a rubber strip extrusion device, and relates to the technical field of rubber processing, the rubber strip extrusion device comprises an extrusion device main body and a driving assembly, the extrusion device main body is provided with a cavity, the extrusion device main body is also provided with a feed inlet, the feed inlet is communicated with the cavity, the extrusion device main body is in threaded connection with an extrusion head, and the extrusion head is in threaded connection with the driving assembly. The extrusion head is provided with an extrusion hole, the diameter of the extrusion hole is the same as that of a rubber strip needing to be prepared, the extrusion hole is communicated with the cavity, and the driving assembly is arranged in the cavity so as to drive the rubber strip to be extruded out of the extrusion hole. The rubber strip extrusion device has the advantages that the extrusion heads with the extrusion holes different in size are replaced, the requirement for preparing sealing elements different in size is met, and the universality of the rubber strip extrusion device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rubber processing technology, in particular to a rubber strip extrusion device. BACKGROUND

[0002] Rubber is a saturated polymer, which has good aging resistance, good weather resistance, excellent electrical insulation performance, good chemical corrosion resistance, good impact elasticity and other characteristics. It is often made into sealing elements and widely used in railway locomotives, automobiles, airplanes, high-rise buildings, refrigerators and various industrial parts to prevent dust, air, water and other external factors from entering the system. In order to facilitate processing, rubber is usually extruded into rubber strips.

[0003] In related technologies, a kind of extrusion device for producing environment-friendly sealing rubber strip is disclosed in Chinese patent No. CN211917656U, which includes a workbench and a conveying table. The extrusion device for producing environment-friendly sealing rubber strip, by feeding hopper, raw materials are put into the conveying cylinder, the internal raw materials are extruded after being heated and discharged from the multiple extrusion holes on the left side of the extrusion head, forming multiple sealing rubber strips to be cooled. The sealing rubber strips are sequentially placed on the guide wheels on the four cross bars, and the ends of the sealing rubber strips are placed on the belt conveying table. Since the surface of the belt conveying table is also rubber, the friction between the sealing rubber strips is large, which can drive the sealing rubber strips to move left, so that the sealing rubber strips discharged from the extrusion holes pass through the water tank and are conveyed leftward by the belt conveying table.

[0004] According to the related technologies in the above, the inventor believes that when the above extrusion device is used to process rubber strips, since the hole diameter of the extrusion hole of the extrusion device is fixed, and the diameter of the rubber strip is strictly limited by the hole diameter of the extrusion hole of the extrusion device, the size of the produced rubber strip is single, which cannot flexibly cope with the actual demand of sealing elements for the size diversity of rubber strips, and there is still room for improvement. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the problem that the size of the produced rubber strip is single and cannot flexibly cope with the actual demand of sealing elements for the size diversity of rubber strips, the present application provides a rubber strip extrusion device.

[0006] The rubber strip extrusion device provided by the present application adopts the following technical scheme:

[0007] A rubber strip extrusion device, comprising an extrusion device main body and a driving assembly, the extrusion device main body is provided with a cavity, the extrusion device main body is also provided with a feeding port, the feeding port and the cavity are communicated, the extrusion device main body is threadedly connected with an extrusion head, the extrusion head is provided with an extrusion hole with the same diameter as the diameter of the rubber strip to be prepared, the extrusion hole and the cavity are communicated, and the driving assembly is arranged in the cavity to drive the rubber strip to be extruded from the extrusion hole.

[0008] By adopting the technical scheme, the extrusion head is threadedly connected to the extrusion device body, detachable connection between the extrusion head and the extrusion device body is realized, and when the extrusion head with different extrusion hole sizes is replaced, the size of the extruded rubber strip is also different, so as to adapt to the demand of preparing sealing elements with different sizes, and the versatility of the rubber strip extrusion device is improved.

[0009] Optionally, the hole diameter of the extrusion hole gradually decreases from the side close to the cavity to the side away from the cavity.

[0010] By adopting the technical scheme, compared with directly extruding the rubber strip from the cavity into the extrusion hole with a small diameter, the rubber strip is guided through the gradually decreasing hole diameter of the extrusion hole from the side close to the cavity to the side away from the cavity, the smoothness of the extrusion process is improved, and at the same time, the rubber strip is uniformly extruded and plasticized during extrusion, so as to improve the size accuracy and overall quality of the rubber strip.

[0011] Optionally, the mounting bracket is further provided, which is arranged on the side of the extrusion device body close to the extrusion hole, and a belt pulley transmission assembly is arranged on the mounting bracket, the belt pulley transmission assembly is arranged on the lower side of the extrusion hole close to the side of the extrusion device body, a cutting motor is further fixedly connected to the mounting bracket, a cutter is fixedly connected to the output shaft of the cutting motor, and the cutter is arranged perpendicular to the transmission direction of the belt pulley transmission assembly.

[0012] By adopting the technical scheme, the rubber strip extruded from the extrusion hole is caught by the belt pulley transmission assembly, the length direction of the rubber strip is perpendicular to the extrusion direction of the cutter, the convenience of cutting the rubber strip by the cutter is improved, and on the other hand, the rubber strip is moved away from the side of the extrusion device body by the belt pulley transmission assembly, so as to avoid the rubber strip from being stacked near the extrusion hole and interfering with the cutter, and the smoothness of the rubber strip extrusion is improved.

[0013] Optionally, the mounting bracket is hingedly connected to the extrusion device body.

[0014] By adopting the technical scheme, when the rubber strip extrusion device is in a non-working state, the mounting bracket is rotated to abut against the side wall of the extrusion device body through the hinged structure of the mounting bracket, so as to reduce the space required for placing the rubber strip extrusion device, and the space cost of storing the rubber strip extrusion device is reduced.

[0015] Optionally, a protective cover is further provided, which is fixedly connected to the mounting bracket, and the local part of the belt pulley transmission assembly and the cutter are arranged in the protective cover.

[0016] By adopting the technical scheme, the protective cover is installed outside the cutter and the belt wheel transmission assembly, so that when an operator accidentally touches the part structure for rubber strip extrusion, the operator will not be injured due to direct contact with the cutter due to the blocking of the protective cover, and the safety of the rubber strip extrusion device is improved.

[0017] Optionally, a window is hinged on the protective cover.

[0018] By adopting the technical scheme, the window structure is installed on the protective cover, so that the belt wheel transmission assembly in the protective cover transmits the rubber strip more intuitively, and when the belt wheel transmission assembly in the protective cover abnormally transmits the rubber strip, the operator adjusts the belt wheel transmission assembly and the rubber strip by opening the window, and the convenience of the operator to understand and intervene in the interior of the protective cover is improved.

[0019] Optionally, a first connecting rod is hinged on the protective cover, a second connecting rod is hinged on the extrusion device body, the first connecting rod and the second connecting rod are hinged to each other, a limiting block is fixedly connected to one side of the first connecting rod close to the second connecting rod, when the first connecting rod and the second connecting rod are rotated to be located on the same straight line, the second connecting rod abuts against the limiting block, a spring is further arranged on the protective cover, one end of the spring is hinged at the hinge between the first connecting rod and the protective cover, and the other end of the spring is hinged at the hinge between the second connecting rod and the extrusion device body, and the spring is in a stretched state.

[0020] By adopting the technical scheme, when the rubber strip extrusion device is in a non-working state, the operator rotates the first connecting rod and the second connecting rod around the respective hinge points until they are located on the same straight line, at this time, the second connecting rod abuts against the limiting block, thereby limiting the further rotation of the two, at this time, the structure that the first connecting rod and the second connecting rod are located on the same straight line limits the restoring force applied by the spring to the first connecting rod and the second connecting rod.

[0021] When the rubber strip extrusion device is in a working state, the operator rotates the first connecting rod and the second connecting rod around the respective hinge points, so that they are no longer located on the same straight line, and the tension of the spring will promote the rotation of the first connecting rod and the second connecting rod, and then drive the belt wheel rotation assembly to rotate to the lower side of the extrusion hole, thereby improving the stability of the belt wheel transmission assembly located on the lower side of the extrusion hole when the rubber strip extrusion device is in a working state.

[0022] Optionally, two limiting columns are fixedly connected to the extrusion device body, and the limiting columns are arranged on both sides of the feeding port one by one.

[0023] By adopting the above technical scheme, when the rubber enters the cavity from the feeding port, the displacement direction of the rubber is limited by the fixedly connected limiting column at the feeding port, so that deviation of the rubber during entering the cavity is avoided, and the stability of the rubber entering the extrusion device main body is improved.

[0024] Optionally, one side of the extrusion device main body is fixedly connected with a hanging rod, and the hanging rod is arranged on the lower side of the feeding port.

[0025] By adopting the above technical scheme, when the length of the rubber is too long, the operator hangs the rubber on the hanging rod to avoid the rubber from drooping to the ground to cause contamination of the raw material, and the convenience of the operator in handling the long rubber is improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. By replacing the extrusion head with different sizes of extrusion holes, the demand for preparing sealing elements of different sizes is met, and the versatility of the rubber strip extrusion device is improved;

[0028] 2. The rubber strip is guided by the gradually reduced hole diameter of the extrusion hole from the side close to the cavity to the side away from the cavity, and the smoothness of the extrusion process is improved;

[0029] 3. The rubber strip extruded from the extrusion hole is caught by the belt pulley transmission assembly, and the length direction of the rubber strip is perpendicular to the extrusion direction of the cutter, so that the convenience of the cutter in cutting the rubber strip is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structure diagram of a rubber strip extrusion device in the embodiment of the present application Figure 1 .

[0031] Figure 2 is a partial sectional view of the extrusion device main body in the embodiment of the present application.

[0032] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0033] Figure 4 is a structure diagram of a rubber strip extrusion device in the embodiment of the present application Figure 2 .

[0034] Figure 5 is a partial structure diagram of the belt pulley rotation assembly, the cutting assembly and the extrusion device main body in the embodiment of the present application.

[0035] Figure 6 is a structure diagram of the protective cover and the adjusting assembly in the embodiment of the present application.

[0036] Explanation of reference signs: 1, extrusion device main body; 11, cavity; 12, feeding port; 13, limiting column; 14, suspension rod; 15, extrusion head; 151, extrusion hole; 16, connecting part; 2, driving assembly; 3, mounting rack; 31, protective cover; 311, window; 312, adjusting assembly; 3121, first connecting rod; 3122, second connecting rod; 3123, spring; 3124, limiting block; 4, belt wheel transmission assembly; 5, cutting assembly; 51, cutting motor; 52, cutter. DETAILED DESCRIPTION

[0037] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application is further described in detail.

[0038] The embodiment of the present application discloses a rubber strip extrusion device.

[0039] Reference Figure 1 and Figure 2 The rubber strip extrusion device comprises an extrusion device main body 1, a driving assembly 2, a mounting rack 3, a belt wheel transmission assembly 4 and a cutting assembly 5. The driving assembly 2 is installed on the extrusion device main body 1 to drive the rubber strip to be extruded from the extrusion device main body 1. In order to facilitate the installation of the belt wheel transmission assembly 4 and the cutting assembly 5, the mounting rack 3 is installed on the extrusion device main body 1. The belt wheel transmission assembly 4 is installed on the mounting rack 3 to support and convey the rubber strip extruded from the extrusion device main body 1. The cutting assembly 5 is installed on the mounting rack 3 to cut the rubber strip extruded from the extrusion device main body 1.

[0040] Reference Figure 1 and Figure 2 The extrusion device main body 1 is provided with a cavity 11 to store the rubber to be extruded. The extrusion device main body 1 is provided with a feeding port 12, which is in communication with the cavity 11 to allow the rubber to enter the cavity 11. In order to limit the displacement of the rubber when it enters the cavity 11, two limiting columns 13 are fixedly connected to the extrusion device main body 1, and the two limiting columns 13 are correspondingly located on the two sides of the feeding port 12, so that when the displacement of the rubber deviates, the rubber abuts one of the limiting columns 13 close to the other limiting column 13. The extrusion device main body 1 is also fixedly connected with a suspension rod 14, which is located below the feeding port 12. When the length of the rubber exposed outside the feeding port 12 is too long, the rubber is hung on the suspension rod 14 to avoid the end of the rubber far from the feeding port 12 from contacting the ground and being contaminated.

[0041] Reference Figure 2 and Figure 3The extrusion head 15 is threadedly connected to the extrusion device body 1, so that the extrusion head 15 and the extrusion device body 1 are detachably connected. The extrusion head 15 has an extrusion hole 151, and the inner diameter of the extrusion hole 151 gradually decreases from the side close to the cavity 11 to the side away from the cavity 11, so as to guide the extrusion process of the rubber strip. The inner diameter of the side of the extrusion hole 151 away from the cavity 11 needs to support the rubber strip with the same diameter, so as to control the size of the rubber strip.

[0042] With reference to Figure 4 and Figure 5 In order to facilitate the installation of the mounting frame 3, the extrusion device body 1 extends a connecting portion 16 close to the side of the extrusion hole 151. The mounting frame 3 is hingedly connected to the connecting portion 16. The pulley transmission assembly 4 is fixedly connected to the mounting frame 3, and the side of the pulley transmission assembly 4 close to the extrusion device body 1 is located below the extrusion hole 151, so as to catch the rubber strip extruded from the extrusion device body 1 and transmit the caught rubber strip away from the side of the extrusion hole 151. The cutting assembly 5 includes a cutting motor 51 and a cutting knife 52. The cutting motor 51 is fixedly connected to the mounting frame 3. The cutting knife 52 is fixedly connected to the output shaft of the cutting motor 51, so that the operation of the cutting motor 51 controls the movement of the cutting knife 52. The cutting direction of the cutting knife 52 is perpendicular to the transmission direction of the pulley transmission assembly 4, so as to cut the rubber strip extruded from the extrusion device body 1, thereby controlling the length of the rubber strip.

[0043] With reference to Figure 5 and Figure 6 In order to avoid the operator being injured by accidentally touching the cutting knife 52 during the extrusion process of the rubber strip extrusion device, the mounting frame 3 is fixedly connected with a protective cover 31, and part of the pulley transmission assembly 4 and the cutting knife 52 are located in the protective cover 31. The protective cover 31 is hingedly connected with a window 311, so that the operator can observe the running status of each structure inside the protective cover 31 through the window 311. When the rubber strip is stranded on the pulley transmission assembly 4, the operator opens the window 311 for manual intervention, so as to avoid the rubber strip stranded affecting the normal operation of the cutting knife 52.

[0044] With reference to Figure 5 and Figure 6In order to facilitate the adjustment and stability of the rotation of the mounting frame 3, the protective cover 31 is provided with an adjusting assembly 312. The adjusting assembly 312 comprises a first connecting rod 3121, a second connecting rod 3122 and a spring 3123. One end of the first connecting rod 3121 is hinged to the protective cover 31, one end of the second connecting rod 3122 is hinged to the extrusion device body 1, and the ends of the first connecting rod 3121 and the second connecting rod 3122 close to each other are hinged to each other, so that the rotation angle between the protective cover 31 and the extrusion device body 1 is adjusted by changing the included angle between the first connecting rod 3121 and the second connecting rod 3122. The side of the first connecting rod 3121 close to the second connecting rod 3122 is fixedly connected with a limiting block 3124 to limit the rotation angle between the first connecting rod 3121 and the second connecting rod 3122. When the first connecting rod 3121 and the second connecting rod 3122 are rotated to be located on the same straight line, the second connecting rod 3122 abuts against the limiting block 3124.

[0045] Referring to Figure 5 and Figure 6 One end of the spring 3123 is hinged to the hinge between the first connecting rod 3121 and the protective cover 31, and the other end of the spring 3123 is hinged to the hinge between the second connecting rod 3122 and the extrusion device body 1, and the spring 3123 is in a stretched state. When the extrusion device needs to be changed to a working state, the first connecting rod 3121 and the second connecting rod 3122 are no longer on the same straight line, and the two ends of the spring 3123 are no longer subjected to the opposite forces applied by the first connecting rod 3121 and the second connecting rod 3122. At this time, the first connecting rod 3121 and the second connecting rod 3122 are rotated by the elastic force of the spring 3123 to restore the original length, the included angle between them becomes smaller, and the protective cover 31 is driven by the first connecting rod 3121 and the second connecting rod 3122 to rotate the mounting frame 3 to abut against the extrusion device body 1. At this time, the belt pulley transmission assembly 4 is located on the lower side of the extrusion hole 151.

[0046] The implementation principle of the rubber strip extrusion device according to the embodiment of the present application is as follows: the rubber is put into the cavity 11 of the extrusion device body 1 from the feeding port 12, the driving assembly 2 is started to move the detection device assembly to the side close to the extrusion hole 151; the mounting frame 3 is rotated to make the protective cover 31 abut against the extrusion device body 1, the belt pulley transmission assembly 4 and the cutting assembly 5 are started, the belt pulley transmission assembly 4 holds the extruded rubber strip on the lower side of the extrusion hole 151 and drives it to the side away from the extrusion device body 1; the cutting assembly 5 cuts the extruded rubber strip; when the diameter of the extruded rubber strip needs to be changed, the extrusion head 15 is rotated and disassembled, and then the extrusion head 15 with the extrusion hole 151 of the required size is reassembled.

[0047] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A rubber strip extrusion device, characterized by: The utility model provides an extrusion device, including extrusion device body (1) and drive assembly (2), be equipped with cavity (11) on extrusion device body (1), extrusion device body (1) is also equipped with feed inlet (12), feed inlet (12) with cavity (11) intercommunication, the threaded connection of extrusion device body (1) is equipped with extrusion head (15), be equipped with the extrusion hole (151) of same diameter with the diameter of rubber strip that needs preparation on extrusion head (15), extrusion hole (151) with cavity (11) intercommunication, drive assembly (2) is located in cavity (11) to drive rubber strip and extrude from extrusion hole (151).

2. A rubber strip extrusion device according to claim 1, characterised in that: The diameter of the extrusion hole (151) gradually decreases from the side close to the cavity (11) to the side away from the cavity (11).

3. A rubber strip extrusion device according to claim 1, characterised in that: It also includes a mounting bracket (3) provided on the side of the extrusion device body (1) close to the extrusion hole (151), a belt pulley transmission assembly (4) provided on the mounting bracket (3), the belt pulley transmission assembly (4) being provided on the lower side of the extrusion hole (151) close to the side of the extrusion device body (1), a cutting motor (51) fixedly connected to the mounting bracket (3), a cutting knife (52) fixedly connected to the output shaft of the cutting motor (51), and the cutting knife (52) being perpendicular to the transmission direction of the belt pulley transmission assembly (4).

4. A rubber strip extrusion device according to claim 3, characterised in that: The mounting bracket (3) is hingedly connected to the extrusion device body (1).

5. A rubber strip extrusion device according to claim 4, characterised in that: It also includes a protective cover (31) fixedly connected to the mounting bracket (3), and the partial belt pulley transmission assembly (4) and the cutting knife (52) are both provided in the protective cover (31).

6. A rubber strip extrusion device according to claim 5, characterised in that: A window (311) is hingedly connected to the protective cover (31).

7. A rubber strip extrusion device according to claim 5, characterised in that: A first connecting rod (3121) is hingedly connected to the protective cover (31), a second connecting rod (3122) is hingedly connected to the extrusion device body (1), the first connecting rod (3121) and the second connecting rod (3122) are hingedly connected to each other, a limiting block (3124) is fixedly connected to the side of the first connecting rod (3121) close to the second connecting rod (3122), when the first connecting rod (3121) and the second connecting rod (3122) are rotated to be located on the same straight line, the second connecting rod (3122) abuts against the limiting block (3124), a spring (3123) is further provided on the protective cover (31), one end of the spring (3123) is hingedly connected to the hinge connection between the first connecting rod (3121) and the protective cover (31), the other end of the spring (3123) is hingedly connected to the hinge connection between the second connecting rod (3122) and the extrusion device body (1), and the spring (3123) is in a stretched state.

8. A rubber strip extrusion device according to claim 1, characterized in that: Two limiting columns (13) are fixedly connected to the extrusion device body (1), and the limiting columns (13) are respectively provided on the two sides of the feed inlet (12).

9. A rubber strip extrusion device according to claim 1, characterized in that: One side of the extrusion device body (1) is fixedly connected with a hanging rod (14), and the hanging rod (14) is arranged on the lower side of the feeding port (12).

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