Extruder screw dismounting and mounting device

Abstract

The utility model relates to the technical field of extrusion molding equipment matching devices, in particular to an extruder screw disassembling and assembling device which comprises a propelling assembly located at one end of an extruder screw and a push-pull assembly located at the other end of the extruder screw. The propelling assembly comprises a screw cylinder and a propelling rod; the push-pull assembly comprises a machine table, a driving part, a movable table and a grabbing table, a through matching hole and a matching groove are formed in the grabbing table, a guide rail support is fixedly arranged at the position, close to an opening of the matching groove, of the grabbing table, a clamping block is movably arranged on the guide rail support, a threaded groove is formed in the clamping block, and the threaded groove is used for abutting against an extruder screw. In order to solve the technical problem that the screw is very inconvenient to disassemble, the push-in assembly is arranged at the tail end of the screw of the extruder and used for pushing out the screw, and the push-pull assembly is arranged at the front end of the screw of the extruder and used for stably pulling out the screw after the head of the screw is pushed out.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices for extrusion equipment, in particular to a screw disassembly and assembly device for an extruder. Background Art

[0002] Extruders are used in the production of cables, mainly to extrude the insulation layer of cables. When using an extruder to produce cables, after a production cycle is completed, the screw of the extruder needs to be pushed out to facilitate the fine cleaning of the screw and the inside of the extruder.

[0003] Because the screw of the extruder is heavy, it is usually pulled out by manpower. That is, the end of the screw is first knocked to knock the screw head out of the extruder. After the screw head is pushed out a certain length due to the knocking, a cloth strip is wrapped around the thread of the screw head, and then a small crane is used to hang the cloth strip and pull it, so that the screw can be gradually pulled out.

[0004] The traditional screw disassembly method is laborious and time-consuming, and has many defects. For example, the violent knocking on the end of the screw will cause certain damage to the screw and the inside of the extruder, reducing the service life; and the screw is usually heavy, and the use of a crane requires constant attention to the balance of the screw. Once the screw falls, it is easy to cause danger. Utility Model Content

[0005] In view of the technical problem that it is very inconvenient to disassemble the screw, the utility model provides an extruder screw disassembly and assembly device, by arranging a propulsion component at the end of the extruder screw to push out the screw, and then arranging a push-pull component at the front end of the extruder screw to stably pull out the screw after the screw head is pushed out.

[0006] The technical solution provided by the utility model is: an extruder screw disassembly and assembly device, comprising a propulsion assembly located at one end of the extruder screw and a push-pull assembly located at the other end of the extruder screw; the propulsion assembly comprises a screw barrel and a propulsion rod, the screw barrel is used to be fixedly connected to the extruder, the outer wall of the propulsion rod is provided with an external thread, the screw barrel is provided with a penetrating internal thread hole, the propulsion rod and the screw barrel cooperate with each other through the internal thread hole and the external thread, and the end of the propulsion rod is used to abut against the extruder screw; the push-pull assembly comprises a machine platform, a driving part, a movable platform and a grabbing platform, the driving part In the machine, the movable table is connected to the output end of the driving part so that the movable table can move along the extension direction of the extruder screw, and the grabbing table is fixed on the movable table; a through matching hole is provided on the grabbing table, and the axial center line of the matching hole coincides with the axial center line of the internal threaded hole, and a matching groove is provided on the grabbing table, and the matching groove is connected with the matching hole, and a guide rail bracket is fixedly provided on the grabbing table near the opening of the matching groove, and a clamping block is movably provided on the guide rail bracket, and a threaded groove is provided on the clamping block, and the threaded groove is used to abut against the extruder screw.

[0007] Optionally, an end block is provided at one end of the propulsion rod, and at least one extension portion is fixedly provided on the end block.

[0008] Optionally, a plurality of fixing columns are fixedly arranged around the screw barrel, and the screw barrel is fixedly connected to the extruder via the fixing columns.

[0009] Optionally, the driving part includes a power assembly and a threaded rod, the bottom of the movable platform is threadably matched with the threaded rod, and the output end of the power assembly is drivingly connected to the threaded rod.

[0010] Optionally, the power assembly includes a motor, the motor is located on one side of the threaded rod, and the motor is connected to the end of the threaded rod through a belt drive.

[0011] Optionally, limiting sliding grooves are arranged on both sides of the machine platform, and raised abutment members are arranged on both sides of the movable platform, and the raised abutment members are movably matched with the limiting sliding grooves.

[0012] Optionally, the raised abutment member includes a support rod, a rolling member is provided on the support rod, and the rolling member abuts against an inner wall of the limiting sliding groove.

[0013] Optionally, the rolling element is a roller or a bearing.

[0014] Beneficial Effects

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: In order to solve the technical problem that the disassembly of the screw is very inconvenient, the utility model sets a propulsion assembly at the end of the extruder screw for pushing out the screw, and then sets a push-pull assembly at the front end of the extruder screw to stably pull out the screw after the screw head is pushed out. In addition, the cleaned screw can be easily pushed back into the extruder through the reverse movement of the push-pull assembly. In this way, the disassembly and installation of the extruder screw can be facilitated, the damage to the screw barrel caused by disassembly can be reduced, the safety hazards during disassembly can be reduced, and the disassembly and installation of the screw can be completed more time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the propulsion assembly proposed in the embodiment of the utility model.

[0017] Figure 2 This is the second propulsion assembly proposed in the embodiment of the utility model.

[0018] Figure 3 This is a schematic structural diagram of a push-pull assembly proposed in an embodiment of the utility model.

[0019] Figure 4 for Figure 3 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0020] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0022] Example 1

[0023] Combined with Figure 1-4, this embodiment proposes an extruder screw disassembly and assembly device, including a propulsion assembly located at one end of the extruder screw and a push-pull assembly located at the other end of the extruder screw. The propulsion assembly includes a screw barrel 10 and a propulsion rod 11. The screw barrel 10 is used to be fixedly connected to the extruder. The outer wall of the propulsion rod 11 is provided with an external thread. The screw barrel 10 is provided with a penetrating internal thread hole. The propulsion rod 11 and the screw barrel 10 cooperate with each other through the internal thread hole and the external thread. The end of the propulsion rod 11 is used to abut against the extruder screw. The push-pull assembly includes a machine platform 20, a driving unit, a movable platform 21 and a grabbing platform 22. The driving unit is located in the machine platform 20. The movable platform 21 is connected to the output end of the driving unit so that the movable platform 21 can move along the extension direction of the extruder screw. The grabbing platform 22 is fixed on the movable platform 21. The grabbing platform 22 is provided with a through matching hole 23, the axial center line of the matching hole 23 coincides with the axial center line of the internal threaded hole, the grabbing platform 22 is provided with a matching groove, the matching groove is connected with the matching hole 23, and a guide rail bracket 24 is fixedly provided near the opening of the matching groove on the grabbing platform 22. A clamping block 25 is movably provided on the guide rail bracket 24, and a threaded groove 250 is provided on the clamping block 25. The threaded groove 250 is used to abut against the extruder screw.

[0024] The extruder screw disassembly and assembly device of the present embodiment, as a supporting device of the extruder, has three working modes including using a propulsion component to push out the screw, using a push-pull component to pull out the screw, and using a push-pull component to put the screw back into the extruder.

[0025] Among them, the working principle of using the propulsion component to push out the screw is as follows: fix the screw barrel 10 at a position on the extruder close to the end of the extruder screw, insert the propulsion rod 11 into the screw barrel 10, at this time, the propulsion rod 11 and the screw barrel 10 cooperate with each other through the internal thread hole and the external thread, and continuously rotate the propulsion rod 11. The rotational motion of the propulsion rod 11 is converted into a translational motion along the axial direction of the extruder screw until the propulsion rod 11 abuts against the end of the extruder screw. At this time, continue to rotate the propulsion rod 11, and the extruder screw can be pushed by the rotational motion of the propulsion rod 11. According to the characteristics of the thread matching, the torque of the rotational motion will be converted into a huge thrust, thereby pushing the head of the extruder screw out of the extruder.

[0026] In the above process, the barrel 10 can be directly fixedly connected to the extruder by welding, riveting, bolting, etc. In a more preferred embodiment, a plurality of fixed columns 100 are fixedly arranged around the barrel 10, and the barrel 10 is fixedly connected to the extruder through the fixed columns 100. The fixed columns 100 can also be directly fixedly connected to the extruder by welding, riveting, bolting, etc. In this embodiment, since the fixed columns 100 are arranged circumferentially outside the barrel 10, it is possible to ensure uniform force and reduce the direct force of the barrel 10, thereby improving the service life and use effect of the propulsion assembly.

[0027] And, in some embodiments, an end block 110 is provided at one end of the propulsion rod 11, and at least one extension portion 111 is fixedly provided on the end block 110. The end block 110 is used to assemble the extension portion 111 and transmit the force of the extension portion 111 to the propulsion rod 11. The extension portion 111 can be a handle, a rod, etc., which is used to extend the force arm required to rotate the propulsion rod 11, which can make it easier for the operator to rotate the propulsion rod 11, thereby making it easier to push out the extruder screw.

[0028] The head of the extruder screw is the other end relative to the end. When the head of the extruder screw is pushed out to a certain length, the push-pull assembly can be used to continue pulling the extruder screw out.

[0029] The working principle of using the push-pull assembly to pull out the screw is as follows: insert the part of the screw that has been pushed out of the extruder into the matching hole 23 of the grabbing table 22, and then select a suitable block 25 according to the tooth shape of the screw. The block 25 slides to the matching groove through the guide rail bracket 24 until the thread groove 250 of the block 25 abuts against the extruder screw. Then start the driving part, the driving part drives the movable part to move along the axial direction of the thread, and drives the block 25 and others to move away from the extruder, so as to completely pull out the extruder screw and complete the disassembly of the extruder screw.

[0030] In the above process, since the axial centerline of the matching hole 23 coincides with the axial centerline of the internal threaded hole, the pushed screw will directly move toward the matching hole 23, which is very convenient. In addition, preferably there are three blocks 25 to fully surround the screw, thereby ensuring that the screw is evenly stressed.

[0031] In some embodiments, the driving unit can be a hydraulic cylinder or other electric traction device. In a more preferred embodiment, the driving unit includes a power assembly and a threaded rod 26, the bottom of the movable table 21 is threadedly matched with the threaded rod 26, and the output end of the power assembly is transmission-connected with the threaded rod 26, wherein the power assembly can be a motor 27 or a hydraulic cylinder, etc. In a further embodiment, the power assembly includes a motor 27, the motor 27 is located on one side of the threaded rod 26, and the motor 27 is transmission-connected to the end of the threaded rod 26 through a belt 28, whereby, through the belt 28, the rotation of the motor 27 can be converted into the rotation of the threaded rod 26, thereby driving the movable table 21 to move through the thread, and finally realizing the translational movement of the extruder screw.

[0032] In one embodiment, the machine platform 20 is provided with limited slide grooves 200 on both sides, and the movable platform 21 is provided with raised abutment members 210 on both sides, and the raised abutment members 210 are movably matched with the limited slide grooves 200. Therefore, the stability of the movement of the movable platform 21 can be ensured by the cooperation between the raised abutment members 210 and the limited slide grooves 200. Among them, the raised abutment members 210 may include a support rod, and a rolling member is provided on the support rod, and the rolling member abuts against the inner wall of the limited slide groove 200. Therefore, the rolling resistance can be further reduced by the rolling member, thereby improving the smoothness of the movement of the movable platform 21 and improving the service life of the push-pull assembly. In a more preferred embodiment, the rolling member is a roller or a bearing.

[0033] After the extruder screw is completely taken out and cleaned, the screw needs to be reinstalled into the extruder. The installation of the extruder screw can also be achieved by a push-pull assembly. When installing the extruder screw, it is only necessary to move the output end of the drive unit in the direction of the extruder screw. For example, taking the aforementioned embodiment as an example, it is only necessary to control the motor 27 to reverse, and the output end of the motor 27 drives the threaded rod 26 to reverse through the belt 28. In this way, the drive unit can drive the movable table 21 to move in the direction of the extruder under the premise that the extruder screw is fixed by the block 25, so that the screw can be reinstalled into the extruder, and only very little manpower is required at this time.

[0034] In summary, the extruder screw disassembly and assembly device of the present embodiment, as a supporting device of the extruder, addresses the technical problem of the inconvenience of disassembling the screw by arranging a propulsion assembly at the end of the extruder screw for pushing out the screw, and arranging a push-pull assembly at the front end of the extruder screw so as to stably pull out the screw after the screw head is pushed out. In addition, the cleaned screw can be easily pushed back into the extruder through the reverse movement of the push-pull assembly. In this way, the disassembly and installation of the extruder screw can be facilitated, the damage to the extruder screw and the extruder caused by disassembly can be reduced, the potential safety hazards during disassembly can be reduced, and the disassembly and installation of the screw can be completed more time-saving and labor-saving.

[0035] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An extruder screw disassembly and assembly device, characterized in that: It includes a propulsion assembly located at one end of the extruder screw and a push-pull assembly located at the other end of the extruder screw; The propulsion assembly comprises a screw barrel (10) and a propulsion rod (11), wherein the screw barrel (10) is used for being fixedly connected to an extruder, an outer wall of the propulsion rod (11) is provided with an external thread, and the screw barrel (10) is provided with an internal thread hole penetrating therethrough, the propulsion rod (11) and the screw barrel (10) cooperate with each other through the internal thread hole and the external thread, and the end of the propulsion rod (11) is used for abutting against the screw of the extruder; The push-pull assembly comprises a machine platform (20), a driving unit, a movable platform (21) and a grabbing platform (22), wherein the driving unit is located inside the machine platform (20), the movable platform (21) is connected to the output end of the driving unit so that the movable platform (21) moves along the extension direction of the extruder screw, and the grabbing platform (22) is fixed on the movable platform (21); The grabbing platform (22) is provided with a through matching hole (23), the axial center line of the matching hole (23) coincides with the axial center line of the internal threaded hole, the grabbing platform (22) is provided with a matching groove, the matching groove is connected with the matching hole (23), a guide rail bracket (24) is fixedly provided on the grabbing platform (22) near the opening of the matching groove, a clamping block (25) is movably provided on the guide rail bracket (24), a thread groove (250) is provided on the clamping block (25), and the thread groove (250) is used to abut against the extruder screw.

2. The extruder screw disassembly and assembly device according to claim 1, characterized in that: An end block (110) is provided at one end of the propulsion rod (11), and at least one extension portion (111) is fixedly provided on the end block (110).

3. The extruder screw disassembly and assembly device according to claim 1, characterized in that: A plurality of fixing columns (100) are fixedly arranged around the screw barrel (10), and the screw barrel (10) is fixedly connected to the extruder via the fixing columns (100).

4. The extruder screw disassembly and assembly device according to claim 1, characterized in that: The driving part comprises a power assembly and a threaded rod (26); the bottom of the movable platform (21) is threadably matched with the threaded rod (26); and the output end of the power assembly is drivingly connected to the threaded rod (26).

5. The extruder screw disassembly and assembly device according to claim 4, characterized in that: The power assembly comprises a motor (27), the motor (27) is located on one side of the threaded rod (26), and the motor (27) is connected to the end of the threaded rod (26) through a belt (28).

6. The extruder screw disassembly and assembly device according to claim 1, characterized in that: Limiting slide grooves (200) are arranged on both sides of the machine platform (20), and protruding abutting members (210) are arranged on both sides of the movable platform (21), and the protruding abutting members (210) are movably matched with the limiting slide grooves (200).

7. The extruder screw disassembly and assembly device according to claim 6, characterized in that: The raised abutment member (210) comprises a support rod, on which a rolling member is arranged, and the rolling member abuts against the inner wall of the limiting sliding groove (200).

8. The extruder screw disassembly and assembly device according to claim 7, characterized in that: The rolling element is a roller or a bearing.

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