Rubber injection machine anti-blocking delivery pipe

Abstract

The utility model relates to rubber processing technical field, specifically is a kind of rubber injection machine anti -blocking delivery pipe, including delivery pipe, outer tube and inner tube, the delivery pipe includes outer tube and inner tube, the top of the inner tube is fixedly arranged with shunt component, the bottom of the inner tube is provided with backflow component;Annular groove is opened in the outer tube, electric heating tube is equidistantly arranged in annular groove by bolt, the inner tube includes inner tube body, the periphery of the inner tube body is wrapped with flexible silica gel heating sheet;By increasing inner and outer synchronous heating mechanism, utilize the mode of shunt, inner and outer synchronous heating, can increase the heating area and range of raw material, improve the situation of local rubber cooling blockage, to improve the use effect.

Description

Technical Field

[0001] This utility model relates to the field of rubber processing technology, specifically to an anti-clogging delivery pipe for a rubber injection machine. Background Technology

[0002] Rubber refers to a highly elastic polymer material with reversible deformation. The rubber injection molding machine is the core equipment in modern rubber product processing. It injects preheated rubber material into the mold cavity under high pressure. After heating, pressure holding and vulcanization, it is finally molded into various rubber products. The conveying pipe of the rubber injection molding machine is used to transport the plasticized rubber raw material to the injection nozzle. It is the key channel connecting the plasticizing unit and the injection nozzle.

[0003] Currently, the use of conveying pipes lacks a synchronous internal and external heating mechanism. Most existing conveying pipes are single-pipe structures, relying solely on a single external heating layer for insulation. This single-pipe heating method easily leads to uneven temperature distribution of the rubber raw material inside the pipe, with higher temperatures near the pipe wall and lower temperatures in the central area. The rubber material is prone to solidifying due to cooling and adhering to the pipe wall, causing blockage. Therefore, a blockage-resistant conveying pipe for rubber injection molding machines is proposed to incorporate a synchronous internal and external heating mechanism. By using a diversion and synchronous internal and external heating method, the heating area and range of the raw material can be increased, improving the situation of localized rubber material cooling and blockage, thereby enhancing the performance. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a rubber injection molding machine anti-clogging delivery pipe, which increases the heating area and range of the raw materials, improves the local cooling and blockage of the rubber material, and thus improves the performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is a rubber injection machine anti-clogging delivery pipe, including a delivery pipe, an outer pipe and an inner pipe. The delivery pipe includes an outer pipe and an inner pipe. A diversion component is fixedly installed at the top of the inner pipe and a return component is installed at the bottom of the inner pipe. The outer tube has an annular groove, and electric heating tubes are equidistantly arranged in the annular groove by bolts. The inner tube includes an inner tube body, and a flexible silicone heating sheet is wrapped around the outer periphery of the inner tube body.

[0006] By adopting the above technical solutions, the heating range and area of ​​the raw materials can be increased by using methods such as diversion, flow guidance, and simultaneous internal and external heating.

[0007] Specifically, the diversion assembly includes a fixed sleeve, a through hole corresponding to the inner tube is provided in the fixed sleeve, an internal thread is provided in the through hole, an external thread corresponding to the internal thread is provided on the surface of the inner tube, and a diversion hole is provided in the fixed sleeve located around the through hole.

[0008] Specifically, a heat-conducting plate is bolted inside the annular groove, and an insulation layer is provided inside the outer tube around the annular groove. The insulation layer is made of glass fiber cotton.

[0009] Specifically, the reflux assembly includes a fixed frame and a support frame. The fixed frame has a conical groove, and a fixed seat is connected to the conical groove by bolts. The fixed seat is connected to the inner tube body by bolts.

[0010] Specifically, the support frame is equipped with an electric heating plate, the top of the support frame is welded with a plug, and the bottom of the fixing frame is provided with a slot corresponding to the plug.

[0011] Specifically, one end of the conveying pipe is bolted to a first flange, and the other end of the conveying pipe is bolted to a second flange, and the support frame is bolted to the second flange.

[0012] The beneficial effects of this utility model are: (1) The anti-clogging conveying pipe of the rubber injection machine described in this utility model increases the internal synchronous heating mechanism by setting a conveying pipe, an outer pipe, an inner pipe, an annular groove, an electric heating pipe, an inner pipe body and a flexible silicone heating sheet. By using the methods of diversion, flow guidance and internal and external synchronous heating, the heating range and area of ​​the raw material are increased, the conveying stability is improved, and blockage caused by local cooling of the raw material is avoided, making the use more stable and reliable.

[0013] (2) The anti-clogging delivery pipe of the rubber injection machine described in this utility model has a quick replacement mechanism through the setting of a fixed sleeve, through hole, internal thread and external thread, so as to realize the quick replacement of the inner tube, thereby improving the convenience and flexibility of subsequent manual maintenance. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the inner tube of this utility model; Figure 4 This is a cross-sectional view of the current splitter component of this utility model; Figure 5 This is a cross-sectional view of the recirculation assembly of this utility model; In the diagram: 1. Delivery pipe; 2. Outer pipe; 201. Annular groove; 202. Heating element; 203. Heat-conducting plate; 204. Insulation layer; 3. Inner pipe; 301. Inner pipe body; 302. Flexible silicone heating element; 303. External thread; 4. Diverting assembly; 401. Fixing sleeve; 402. Through hole; 403. Internal thread; 404. Diverting hole; 5. Return assembly; 501. Fixing bracket; 502. Support bracket; 503. Conical groove; 504. Fixing seat; 505. Heating plate; 506. Insert block; 507. Slot; 6. First flange; 7. Second flange. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] To facilitate increasing the heating area and range of the raw materials, improve localized cooling blockage of the rubber compound, and thus enhance the performance, such as... Figure 1-3 As shown, the present invention provides a rubber injection machine anti-clogging delivery pipe, which includes a delivery pipe 1, an outer pipe 2 and an inner pipe 3. The delivery pipe 1 includes an outer pipe 2 and an inner pipe 3. A diversion component 4 is fixedly provided at the top of the inner pipe 3, and a return component 5 is provided at the bottom of the inner pipe 3. The outer tube 2 has an annular groove 201 inside, and electric heating tubes 202 are equidistantly arranged in the annular groove 201 by bolts. The inner tube 3 includes an inner tube body 301, and a flexible silicone heating sheet 302 is wrapped around the outer periphery of the inner tube body 301.

[0018] During use, the plasticized rubber raw material first enters the diversion component 4. After diversion, part of it enters the inner tube 3, while the other part flows in the gap between the inner and outer tubes. At the same time, the electric heating tube 202 in the annular groove 201 of the outer tube 2 and the flexible silicone heating plate 302 around the inner tube 301 are activated. The electric heating tube 202 heats the raw material in the gap between the inner and outer tubes, and the flexible silicone heating plate 302 heats the raw material inside the tube, achieving synchronous heating inside and outside and avoiding local cooling and solidification of the raw material. Subsequently, the raw material converges at the return component 5 and continues to be transported to the injection nozzle, which can prevent the delivery tube 1 from being blocked.

[0019] To improve the ease of installation and maintenance, for example, such as Figure 2 , Figure 4 As shown, the present invention also includes a diversion component 4 comprising a fixed sleeve 401, wherein a through hole 402 corresponding to the inner tube 3 is provided in the fixed sleeve 401, an internal thread 403 is provided in the through hole 402, an external thread 303 corresponding to the internal thread 403 is provided on the surface of the inner tube 301, and a diversion hole 404 is provided in the fixed sleeve 401 around the through hole 402.

[0020] In use, the inner tube 3 and the diversion component 4 can be quickly assembled or disassembled by the external thread 303 on the surface of the inner tube 301 engaging with the internal thread 403 in the through hole 402 of the fixed sleeve 401. After the raw material enters the fixed sleeve 401, part of it enters the inner tube 3 through the through hole 402, and the other part enters the gap between the inner and outer tubes through the peripheral diversion hole 404, thereby achieving diversion and conveying, increasing the contact area between the raw material and the heating element. A temperature-resistant sealing ring is provided between the fixed sleeve 401 and the inner tube 3.

[0021] For example, such as Figure 2 As shown, the present invention also includes a heat-conducting plate 203 connected to the annular groove 201 by bolts, and an insulation layer 204 provided in the outer tube 2 around the annular groove 201, the insulation layer 204 being made of glass fiber cotton.

[0022] During use, the heat generated by the heating element 202 is evenly transferred to the raw material in the gap between the inner and outer tubes through the heat-conducting plate 203, avoiding local overheating or uneven heating; the glass fiber cotton insulation layer 204 inside the outer tube 2 can reduce heat loss, maintain the internal temperature of the outer tube 2, reduce energy consumption, and at the same time prevent operators from being burned when touching the outer wall of the outer tube 2. The outer tube 2 includes an outer protective layer, which is a stainless steel metal woven mesh.

[0023] For example, such as Figure 5 As shown, the present invention also includes the following: the reflux assembly 5 includes a fixed frame 501 and a support frame 502. The fixed frame 501 has a conical groove 503. A fixed seat 504 is bolted into the conical groove 503, and the fixed seat 504 is bolted to the inner tube body 301.

[0024] During use, the fixing seat 504 is connected to the inner tube body 301 by bolts and is fixed in the conical groove 503 of the fixing frame 501, which plays a fixed support role for the inner tube 3 and ensures the stability of the inner tube 3 during the material conveying process. The material in the gap between the inner and outer tubes and the material in the inner tube 3 respectively enter the conical groove 503 of the fixing frame 501 and smoothly converge under the guidance of the conical structure, reducing material retention. A sealing ring is provided between the fixing frame 501 and the support frame 502, which is made of oil-resistant nitrile rubber.

[0025] For example, such as Figure 5 As shown, the present invention also includes an electric heating plate 505 disposed inside the support frame 502, an insert block 506 welded to the top of the support frame 502, and a slot 507 corresponding to the insert block 506 opened at the bottom of the fixing frame 501.

[0026] When in use, the heating plate 505 inside the support frame 502 can further heat and keep the combined raw materials warm, ensuring that the raw materials always maintain good fluidity; through the cooperation of the insert block 506 and the slot 507, the support frame 502 and the fixed frame 501 can be quickly assembled or disassembled, which facilitates the cleaning and maintenance of the inside of the return component 5, and also facilitates the disassembly and replacement of the inner tube 3.

[0027] For example, such as Figure 1 As shown, the present invention also includes a first flange 6 bolted to one end of the conveying pipe 1, a second flange 7 bolted to the other end of the conveying pipe 1, and a support frame 502 bolted to the second flange 7.

[0028] In use, the first flange 6 can be used to quickly connect the delivery pipe 1 to the plasticizing unit of the rubber injection machine, and the second flange 7 can be used to connect the delivery pipe 1 to the injection nozzle. The flange connection method facilitates the overall installation and disassembly of the delivery pipe 1. At the same time, the support frame 502 is bolted to the second flange 7 to further enhance the stability of the reflux assembly 5 and prevent the reflux assembly 5 from shifting due to excessive raw material delivery pressure. The delivery pipe 1 includes a controller, and the heating element 202, flexible silicone heating plate 302, and heating plate 505 are all electrically connected to the controller through wires.

[0029] In use, this invention first connects the conveying pipe 1 to the plasticizing unit and injection nozzle of the rubber injection machine via the first flange 6 and the second flange 7, completing the overall assembly. After starting the equipment, the plasticized rubber raw material enters the diversion assembly 4, and enters the gap between the inner and outer pipes 2 and the interior of the inner pipe 3 through the diversion hole 404 and the through hole 402, respectively. Then, the electric heating tube 202, the flexible silicone heating sheet 302, and the electric heating plate 505 are activated. The electric heating tube 202 heats the raw material in the gap between the inner and outer pipes through the heat-conducting plate 203, the flexible silicone heating sheet 302 heats the raw material inside and outside the inner pipe 301, and the electric heating plate 505 keeps the combined raw material warm, achieving full-process heating and heat preservation. The heat preservation layer 204 can reduce heat loss and ensure stable raw material temperature. When maintenance is required, first shut down the equipment, remove the first flange 6 and the second flange 7, pull out the insert 506 of the support frame 502, and separate the support frame 502 from the fixed frame 501; then rotate the inner tube 3, and remove the inner tube 3 by the cooperation of the external thread 303 and the internal thread 403, clean the accumulated material inside the tube or replace the inner tube 3 directly; after maintenance is completed, reassemble according to the reverse steps to restore use.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rubber injection molding machine anti-clogging delivery pipe, characterized in that, It includes a delivery pipe (1), an outer pipe (2) and an inner pipe (3). The delivery pipe (1) includes an outer pipe (2) and an inner pipe (3). A diversion component (4) is fixedly installed at the top of the inner pipe (3), and a return component (5) is installed at the bottom of the inner pipe (3). The outer tube (2) has an annular groove (201) inside, and electric heating tubes (202) are arranged equidistantly in the annular groove (201) by bolts. The inner tube (3) includes an inner tube body (301), and a flexible silicone heating sheet (302) is wrapped around the outer periphery of the inner tube body (301).

2. The anti-clogging delivery pipe for a rubber injection molding machine according to claim 1, characterized in that, The diversion assembly (4) includes a fixed sleeve (401), a through hole (402) corresponding to the inner tube (3) is provided in the fixed sleeve (401), an internal thread (403) is provided in the through hole (402), an external thread (303) corresponding to the internal thread (403) is provided on the surface of the inner tube body (301), and a diversion hole (404) is provided in the fixed sleeve (401) around the through hole (402).

3. The anti-clogging delivery pipe for a rubber injection molding machine according to claim 1, characterized in that, A heat-conducting plate (203) is bolted inside the annular groove (201), and an insulation layer (204) is provided inside the outer tube (2) around the annular groove (201). The insulation layer (204) is made of glass fiber cotton.

4. The anti-clogging delivery pipe for a rubber injection molding machine according to claim 1, characterized in that, The reflux assembly (5) includes a fixed frame (501) and a support frame (502). A conical groove (503) is provided in the fixed frame (501). A fixed seat (504) is connected to the conical groove (503) by bolts, and the fixed seat (504) is connected to the inner tube body (301) by bolts.

5. The anti-clogging delivery pipe for a rubber injection molding machine according to claim 4, characterized in that, The support frame (502) is provided with an electric heating plate (505), and a plug (506) is welded to the top of the support frame (502). The bottom of the fixing frame (501) is provided with a slot (507) corresponding to the plug (506).

6. The anti-clogging delivery pipe for a rubber injection molding machine according to claim 4, characterized in that, One end of the conveying pipe (1) is bolted to a first flange (6), and the other end of the conveying pipe (1) is bolted to a second flange (7), and the support frame (502) is bolted to the second flange (7).

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