Rubber extruding die and die core mouth wrench
By designing a replaceable die core port structure, the high cost and low efficiency problems caused by wear of extruded rubber molds are solved, the convenience of mold replacement and production costs are achieved, and the quality and service life of cables are improved.
Patent Information
- Application Number
- CN202420960563.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During the production process of the rubber extrusion mold cable, the die core nozzle is seriously worn, resulting in reduced conductivity, high production costs and frequent replacement, which affects the quality and service life of the cable.
Design a rubber extrusion mold and a die-core wrench, which is threaded to the die-core mouth through the die-core body, allowing only the worn die-core mouth to be replaced instead of the entire die. The die-core mouth wrench is used to easily realize the replacement of the die-core mouth. and install.
It reduces cable production costs, extends mold service life, and improves production efficiency and product quality.
Smart Images
Figure CN222290965U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of rubber extrusion dies, in particular to a rubber extrusion die and a die core wrench. Background Art
[0002] With the vigorous development of the national industry, cables used in national power systems, information transmission systems and household power transmission have been mass-produced. In order to improve the production efficiency of cables, during the cable manufacturing process, the cables will pass through the core mouth of the rubber extrusion die at an extremely high production speed, which will cause the core mouth to be seriously worn. This wear phenomenon not only seriously affects the electrical conductivity of the cable, but also affects the subsequent processing and laying and installation of the cable. It may also cause scratches on the cable conductor, and even cause the product quality to be unable to be guaranteed during the cable production process, reducing the service life of the cable.
[0003] In the related art, the rubber extrusion mold needs to be replaced after being worn to a certain extent, so enterprises in the industry usually purchase multiple extrusion molds and store them temporarily for replacement at any time. However, since the core of the rubber extrusion mold is hard and brittle, the core is easy to break during cable production, so the extrusion mold needs to be replaced frequently, which leads to higher cable production costs. Utility Model Content
[0004] In order to reduce the production cost of cables, the present application provides a rubber extrusion die and a die core wrench.
[0005] In a first aspect, the present application provides a rubber extrusion die.
[0006] A rubber extrusion die adopts the following technical solution:
[0007] A rubber extrusion die comprises a die body and a die core opening threadedly connected to the die body, an extrusion cavity is formed on the die body, an extrusion channel is formed on the die core opening and a die core nozzle is formed at one end away from the die body, and the die core nozzle, the extrusion channel and the extrusion cavity are connected;
[0008] The opposite sides of the core opening are provided with fastening holes for facilitating the installation and disassembly of the core opening.
[0009] By adopting the above technical solution, when producing cables, the cables pass through the mold body and the core mouth in turn. The core mouth is gradually worn during the production process, and then the core mouth can be removed with a core mouth wrench, and then a new core mouth can be installed, instead of replacing the entire rubber extrusion mold. The company only needs to purchase multiple core mouths instead of the entire rubber extrusion mold, thereby effectively reducing the production cost of the cable.
[0010] Optionally, an end of the mold body close to the core opening is provided with a connecting internal thread, and an end of the core opening close to the mold body is provided with a connecting external thread, and the mold body and the core opening are threadedly connected via the connecting internal thread and the connecting external thread.
[0011] By adopting the above technical solution, the threaded connection between the core port and the mold body can be achieved by setting the connecting internal thread and the connecting external thread, so that when the core port is removed from the mold body, it is only necessary to rotate the core port.
[0012] Optionally, the thread spacing between the mold body and the mold core opening threaded connection is 0.5 mm.
[0013] By adopting the above technical solution, the tooth spacing is set to 0.5 mm, which can ensure the concentricity of the mold body and the mold core mouth while forming an integral structure.
[0014] Optionally, mounting slots are provided on opposite sides of the mold body to facilitate installation and disassembly of the mold body.
[0015] By adopting the above technical solution and providing the installation slot, a force point can be provided for the tool for installing the mold body, thereby improving the convenience of installing the mold body.
[0016] Optionally, one end of the mold body away from the mold core opening is provided with a body thread for threaded connection with the rubber extrusion body.
[0017] By adopting the above technical solution, when the mold body is fixed to the rubber extrusion body, the mold body only needs to be rotated to achieve the threaded connection with the rubber extrusion body.
[0018] In a second aspect, the present application provides a core mouth wrench.
[0019] A core wrench adopts the following technical solution:
[0020] A core mouth wrench, applied to the extrusion mold described in the first aspect, comprises a grip rod, a first lever arm, a second lever arm, a first force shaft and a telescopic member; the first lever arm and the second lever arm are arranged side by side at one end of the wrench, the first force shaft is arranged on the first lever arm, the telescopic member is arranged on the second lever arm, and the first force shaft and the telescopic member can be respectively inserted into the two fastening holes.
[0021] By adopting the above technical solution, when removing the core mouth on the mold body or installing the core mouth on the mold body, it is only necessary to insert the first force shaft and the telescopic part into the two fastening holes respectively to achieve the connection with the core mouth, and then the core mouth can be removed or installed on the mold body by rotating the grip rod.
[0022] Optionally, the telescopic member includes a second force shaft slidably inserted into the second force arm, a telescopic handle arranged at an end of the second force shaft away from the first force shaft, and a tension spring sleeved on the second force shaft, the second force shaft can be inserted into the fastening hole, a convex ring is arranged at one end of the second force shaft close to the first force shaft, and two ends of the tension spring are respectively arranged on the convex ring and the second force arm.
[0023] By adopting the above technical solution, when removing the core opening on the mold body or installing the core opening on the mold body, the staff first pulls the telescopic handle, at which time the second force-applying shaft moves in a direction away from the first force-applying shaft, and the tension spring contracts under force. Then the first force-applying shaft is inserted into one of the fastening holes of the core opening, and then the telescopic handle is gradually loosened, so that the tension spring is extended and the second force-applying shaft moves toward the first force-applying shaft until the second force-applying shaft is inserted into another fastening hole. Finally, the staff applies a rotational force to the grip rod to achieve the replacement of the core opening.
[0024] Optionally, the gripping portion of the grip rod is provided with an anti-slip pattern.
[0025] By adopting the above technical solution, the provision of the anti-slip pattern can increase the friction between the staff's hands and the grip, thereby reducing slippage when applying force.
[0026] In summary, the present application includes the beneficial technical effects: after the core mouth is worn, only a new core mouth needs to be replaced instead of replacing the entire rubber extrusion mold. The replacement is convenient and the implementation cost is lower, thus effectively reducing the production cost of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the exploded structure of the rubber extrusion die in the embodiment of the present application;
[0028] Figure 2 It is a schematic diagram of the implementation of the core wrench in the embodiment of the present application.
[0029] Explanation of the accompanying drawings: 1. Mold body; 11. Body thread; 12. Connecting internal thread; 13. Mounting slot; 2. Mold core opening; 21. Connecting external thread; 22. Mold core mouth; 23. Fastening hole; 3. Grip rod; 4. First force arm; 5. Second force arm; 6. First force axis; 7. Telescopic member; 71. Second force axis; 711. Convex ring; 72. Tension spring; 73. Telescopic handle. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-2 This application is described in further detail.
[0031] The embodiment of the present application discloses a rubber extrusion die and a die core wrench.
[0032] In a first aspect, an embodiment of the present application discloses a rubber extrusion die.
[0033] Reference Figure 1 A rubber extrusion die includes a die body 1 and a die core 2, the die body 1 and the die core 2 are threadedly connected, and the pitch of the threads at the threaded connection is 0.5 mm, so that the die body 1 and the die core 2 form an integral structure while ensuring the concentricity of the two.
[0034] The mold body 1 and the mold core opening 2 are truncated cone-shaped, the mold body 1 is provided with an extrusion cavity along the central axis, and the mold core opening 2 is provided with an extrusion channel along the central axis. A body thread 11 is provided on the outer wall of the larger diameter end of the mold body 1, and the mold body 1 is threadedly connected with the extrusion rubber body through the body thread 11. A connecting internal thread 12 is provided on the wall of the extrusion cavity at the smaller diameter end of the mold body 1, and a connecting external thread 21 is provided on the outer wall of the larger diameter end of the mold core opening 2, and the mold body 1 and the mold core opening 2 are threadedly connected through the connecting internal thread 12 and the connecting external thread 21.
[0035] The end of the core opening 2 with a smaller diameter is integrally formed with a core nozzle 22, and the core nozzle 22 is connected to the extrusion channel. When producing cables, the molten outer protective material of the cable is temporarily stored in the extrusion cavity. By tensioning the cable, the cable is subjected to the tensioning force and sequentially passes through the extrusion cavity of the mold body 1 and the extrusion channel of the core opening 2, and the outer protective material is attached to the cable through extrusion. The setting of the core nozzle 22 is conducive to controlling the thickness of the extrusion, that is, the molding diameter of the cable.
[0036] Mounting slots 13 are provided on the side walls on opposite sides of the mold body 1. The setting of the mounting slots 13 can provide a force point for the tool for mounting the mold body 1, thereby improving the convenience of mounting the mold body 1. Fastening holes 23 are provided on the side walls on opposite sides of the mold core opening 2. The setting of the fastening holes 23 can provide a force point for the wrench of the mold core opening 2, thereby improving the convenience of replacing the mold core opening 2.
[0037] The implementation principle of a rubber extrusion mold in an embodiment of the present application is: when producing cables, the cables pass through the core mouth 2, and the core mouth is gradually worn during the production process. After that, the core mouth 2 can be removed with a core mouth wrench, and then a new core mouth 2 can be installed, instead of replacing the rubber extrusion mold as a whole. The company only needs to purchase multiple core mouths 2, thereby effectively reducing the production cost of the cable.
[0038] In a second aspect, an embodiment of the present application further discloses a core mouth wrench.
[0039] Reference Figure 1 and Figure 2A core mouth wrench includes a grip 3, a first force arm 4, a second force arm 5, a first force shaft 6 and a telescopic member 7. The first force arm 4 and the second force arm 5 are integrally formed at the same end of the grip 3, and the first force arm 4 and the second force arm 5 are arranged side by side. The first force shaft 6 is formed on the first force arm 4, and the first force shaft 6 is located at the end of the first force arm 4 away from the grip 3, and the first force shaft 6 is located on the side of the first force arm 4 close to the second force arm 5. The telescopic member 7 is arranged on the second force arm 5, and the telescopic member 7 can move toward the direction close to the first force shaft 6 or away from the first force shaft 6, and the telescopic member 7 and the first force shaft 6 can be respectively inserted into the two fastening holes 23 of the core mouth 2, so as to fix the core mouth 2, and then the core mouth 2 can be threadedly connected to the mold body 1 by rotating the core mouth 2, or the core mouth 2 on the mold body 1 can be removed.
[0040] The telescopic member 7 includes a second force-applying shaft 71, a tension spring 72 and a telescopic handle 73. The second force-applying shaft 71 is slidably arranged in the second force arm 5, and the second force-applying shaft 71 is coaxial with the first force-applying shaft 6, and the second force-applying shaft 71 can move in a direction away from or close to the first force-applying shaft 6. A convex ring 711 is integrally formed at one end of the second force-applying shaft 71 close to the first force-applying shaft 6, and the tension spring 72 is sleeved on the second force-applying shaft 71, and one end of the tension spring 72 is fixedly connected to the convex ring 711, and the other end is fixedly connected to the second force-applying shaft 71. The telescopic handle 73 is fixedly connected to one end of the second force-applying shaft 71 away from the first force-applying shaft 6.
[0041] The gripping portion of the gripping rod 3 is integrally formed with an anti-skid pattern, which can increase the friction between the worker's hand and the gripping rod 3, thereby reducing the possibility of slipping when applying force.
[0042] The implementation principle of a core opening wrench of the embodiment of the present application is as follows: when removing the core opening 2 on the mold body 1 or assembling the core opening 2 on the mold body 1, the staff first pulls the telescopic handle 73, at which time the second force-applying shaft 71 moves in a direction away from the first force-applying shaft 6, and the tension spring 72 contracts under force. Then the first force-applying shaft 6 is inserted into one of the fastening holes 23 of the core opening 2, and then the telescopic handle 73 is gradually loosened, so that the tension spring 72 is extended, and the second force-applying shaft 71 moves toward the first force-applying shaft 6 until the second force-applying shaft 71 is inserted into another fastening hole 23. Finally, the staff applies a rotational force to the grip 3 to achieve the replacement of the core opening 2.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A rubber extrusion die, characterized in that: The mold body (1) comprises a mold body (1) and a mold core opening (2) threadedly connected to the mold body (1), the mold body (1) is provided with an extrusion cavity, the mold core opening (2) is provided with an extrusion channel and a mold core nozzle (22) is provided at one end away from the mold body (1), the mold core nozzle (22), the extrusion channel and the extrusion cavity are connected; Fastening holes (23) are provided on opposite sides of the mold core opening (2) for facilitating installation and removal of the mold core opening (2).
2. A rubber extrusion die according to claim 1, characterized in that: An end of the mold body (1) close to the mold core opening (2) is provided with a connecting internal thread (12), and an end of the mold core opening (2) close to the mold body (1) is provided with a connecting external thread (21), and the mold body (1) and the mold core opening (2) are threadedly connected via the connecting internal thread (12) and the connecting external thread (21).
3. A rubber extrusion die according to claim 2, characterized in that: The thread pitch of the threaded connection between the mold body (1) and the mold core opening (2) is 0.5 mm.
4. The rubber extrusion die according to claim 1, characterized in that: Mounting slots (13) are provided on opposite sides of the mold body (1) to facilitate mounting and dismounting of the mold body (1).
5. The rubber extrusion die according to claim 1, characterized in that: One end of the mold body (1) away from the mold core opening (2) is provided with a body thread (11) for threaded connection with the rubber extrusion body.
6. A core wrench, applied to the rubber extrusion die according to any one of claims 1 to 5, characterized in that: The wrench comprises a grip (3), a first force arm (4), a second force arm (5), a first force-applying shaft (6) and a telescopic member (7); the first force arm (4) and the second force arm (5) are arranged side by side at one end of the wrench, the first force-applying shaft (6) is arranged on the first force arm (4), the telescopic member (7) is arranged on the second force arm (5), and the first force-applying shaft (6) and the telescopic member (7) can be respectively inserted into the two fastening holes (23).
7. A core wrench according to claim 6, characterized in that: The telescopic member (7) comprises a second force-applying shaft (71) slidably inserted into the second force arm (5), a telescopic handle (73) arranged at one end of the second force-applying shaft (71) away from the first force-applying shaft (6), and a tension spring (72) sleeved on the second force-applying shaft (71); the second force-applying shaft (71) can be inserted into the fastening hole (23); a convex ring (711) is arranged at one end of the second force-applying shaft (71) close to the first force-applying shaft (6); and two ends of the tension spring (72) are respectively arranged on the convex ring (711) and the second force arm (5).
8. A core wrench according to claim 6, characterized in that: The gripping portion of the grip rod (3) is provided with an anti-slip pattern.