Disassembling and assembling tool
By designing a disassembly and assembly tool suitable for screw assembly and disassembly, and adopting the screw drive principle, the problem of damage to the screw and reducer during screw assembly and disassembly is solved, achieving efficient disassembly and assembly that saves time and effort.
Patent Information
- Application Number
- CN202423237322.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing technologies, there are problems with damage to the screw and reducer during the assembly and disassembly of the screw. In addition, the general puller tool is time-consuming and labor-intensive, and is prone to damaging the gearbox. It also occupies a large area and is not easy to manage.
A disassembly and assembly tool including a top block, a disassembly and assembly rod, and a fixing nut was designed. The tool achieves the disassembly and assembly of the screw through the screw drive principle, avoiding knocking and reducing damage to the screw and reducer.
It reduces the workload and damage during screw assembly and disassembly, improves production efficiency, reduces damage to the reducer, and shortens downtime.
Smart Images
Figure CN223558364U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of mechanical assembly tools, in particular to a dismounting tool. BACKGROUND
[0002] At present, most of the practitioners in the related industry in China use copper rods to knock the long end of the screw rod to assemble the screw- reducer, and use copper rods to knock the shaft head to disassemble the screw- reducer. However, the use of copper rods to knock will cause the transmission end or the long end of the screw rod to have more or less knocking marks and damage. Some other practitioners use general pullers for dismounting, which is time- consuming and labor- intensive, and the puller may cause permanent damage to the reduction box, resulting in a long downtime of the production workshop. In addition, the general puller tool has the disadvantages of large occupation area and heavy parts, which is easy to be shared by other process tools, causing problems such as untimely maintenance, inadequate response, etc. SUMMARY
[0003] In order to solve the above technical problems, the purpose of the present application is to provide a dismounting tool suitable for dismounting of an extrusion screw.
[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a dismounting tool, comprising a top block, a dismounting rod and a fixing nut, the dismounting rod extends in the front- rear direction, and from front to rear, it is sequentially provided with a connecting thread part, a rod body part, a transmission thread part and a hexagonal head part, the connecting thread part has a connecting thread extending spirally from front to rear, and the transmission thread part has a transmission thread extending spirally from front to rear; the top block is internally provided with a first threaded hole, the first threaded hole is matched with the connecting thread, the fixing nut is internally provided with a first transmission threaded hole and a second transmission threaded hole which are in communication with each other and arranged on the same axis, the first transmission threaded hole is located on the front side of the second transmission threaded hole, and the inner diameter of the first transmission threaded hole is greater than that of the second transmission threaded hole, and the second transmission threaded hole is matched with the transmission thread.
[0005] In the above technical scheme, further preferably, a plurality of handles are inserted on the outer wall surface of the fixing nut, the plurality of handles are arranged at intervals along the circumference of the fixing nut, and each handle extends along the radial direction of the fixing nut.
[0006] In the above technical scheme, further preferably, the length of the transmission thread part is greater than one third of the length of the dismounting rod and less than one half of the length of the dismounting rod.
[0007] In the above technical scheme, further preferably, the bottom diameter of the transmission thread part is greater than the bottom diameter of the rod body part, and the bottom diameter of the rod body part is greater than the outer diameter of the connecting thread part.
[0008] The application has the following advantages compared with the prior art:
[0009] The dismounting tool of the application is suitable for dismounting and mounting the extrusion screw of the extruder, greatly reduces the work intensity of dismounting and mounting and the damage degree of the speed reducer and the extrusion screw during the dismounting and mounting process, eliminates the impact stress on the extrusion screw during the dismounting and mounting process, saves time and effort, and effectively improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 FIG. 1 is a structural schematic diagram of the dismounting tool of the application when dismounting the extrusion screw;
[0011] Figure 2 FIG. 2 is a structural schematic diagram of the dismounting tool of the application when mounting the extrusion screw; Figure 1
[0012] Figure 3 FIG. 3 is a structural schematic diagram of the top block in the dismounting tool of the application; Figure 1
[0013] Figure 4 FIG. 4 is a structural schematic diagram of the fixed nut in the dismounting tool of the application; Figure 1
[0014] Figure 5 FIG. 5 is a use schematic diagram of the dismounting tool of the application when dismounting the extrusion screw; Figure 1
[0015] Figure 6 FIG. 6 is a use schematic diagram of the dismounting tool of the application when mounting the extrusion screw. Figure 2 In the figures: 10, dismounting tool; 1, top block; 11, first threaded hole; 2, dismounting rod; 21, connecting thread part; 22, rod body part; 23, transmission thread part; 24, hexagonal head part; 3, fixed nut; 31, first transmission threaded hole; 32, second transmission threaded hole; 33, handle; 20, extrusion screw; 201, transmission end; 30, speed reducer; 301, mounting hole; 302, mounting channel; 303, threaded protrusion.
[0016] DETAILED DESCRIPTION
[0017] In order to describe the technical contents, structural features, purposes and effects of the application in detail, the technical solutions in the embodiments of the application will be described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments. In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the application. However, various exemplary embodiments can also be practiced without these specific details or with one or more equivalent arrangements. In addition, various exemplary embodiments can be different but not necessarily mutually exclusive. For example, the specific shape, structure and characteristics of an exemplary embodiment can be used or implemented in another exemplary embodiment without departing from the inventive concept.
[0018] The application provides a dismounting tool which is suitable for on-site dismounting of an extrusion screw of an extrusion device. An operator uses the dismounting tool 10 to assemble the extrusion screw onto a speed reducer or dismount the extrusion screw from the speed reducer. The dismounting process does not require knocking, eliminates impact stress on the extrusion screw, and reduces the damage degree of the speed reducer.
[0019] As shown in Figure 1 , the dismounting tool 10 comprises a top block 1, a dismounting rod 2 and a fixing nut 3. The dismounting rod 2 extends in the front-rear direction and comprises, in sequence from front to rear, a connecting threaded portion 21, a rod body portion 22, a transmission threaded portion 23 and a hexagonal head portion 24. The connecting threaded portion 21 is provided with a connecting thread extending helically from front to rear. The transmission threaded portion 23 is provided with a transmission thread extending helically from front to rear.
[0020] As shown in Figure 1 , 3 , the top block 1 is internally provided with a first threaded hole 11 which can be matched with the connecting thread of the connecting threaded portion 21. The top block 1 is screwed on the connecting threaded portion 21 through the threaded matching of the first threaded hole 11 and the connecting thread.
[0021] As shown in Figure 1 , 4 , the fixing nut 3 is internally provided with a first transmission threaded hole 31 and a second transmission threaded hole 32 which are in communication with each other. The first transmission threaded hole 31 is located at the front side of the second transmission threaded hole 32, and the inner diameter of the first transmission threaded hole 31 is greater than that of the second transmission threaded hole 32. The first transmission threaded hole 31 and the second transmission threaded hole 32 are coaxially arranged with the dismounting rod 2. The second transmission threaded hole 32 can be matched with the transmission thread of the transmission threaded portion 23. The dismounting rod 2 is screwed through the second transmission threaded hole 32 and the transmission thread. The dismounting rod 2 and the fixing nut 3 constitute a screw rod transmission. One of the dismounting rod 2 and the fixing nut 3 can move in the front-rear direction relative to the other while rotating around the own axial line.
[0022] As Figure 1 , 2 shown in the embodiments of the present application, the length of the transmission screw thread part 23 is greater than one third of the length of the dismounting rod 2 and less than one half of the length of the dismounting rod 2; the bottom diameter D1 of the transmission screw thread part 23 is greater than the bottom diameter D2 of the rod body part 22, and the bottom diameter D2 of the rod body part 22 is greater than the outer diameter D3 of the connecting screw thread part 21, so that the rod body part 22 and the connecting screw thread part 21 of the dismounting rod 2 can pass through the second transmission screw thread hole 32.
[0023] A plurality of handles 33 are inserted on the outer wall surface of the fixing nut 3, the plurality of handles 33 are arranged at intervals along the circumference of the fixing nut 3, and each handle 33 extends along the radial direction of the fixing nut 3. The installation of the handle 33 on the fixing nut 3 facilitates the rotation of the fixing nut 3 by the operator, thereby reducing the operation difficulty and work intensity.
[0024] As Figure 5 , 6 shown, the extrusion screw rod 20 has a transmission end 201 assembled with the speed reducer 30, the speed reducer 30 has a mounting hole 301 for assembling the transmission end 201, when the transmission end 201 is moved into the mounting hole 301, the speed reducer 30 can transmit the power of the driving motor to the extrusion screw rod 20, thereby driving the extrusion screw rod 20 to rotate. The inside of the transmission end 201 is provided with a threaded hole matched with the connecting thread. The speed reducer 30 has a mounting channel 302 in communication with the mounting hole 301 and coaxial with the mounting hole 301, and a threaded lug 303 is further provided on the side wall of the speed reducer 30, the threaded lug 303 is arranged at the end of the mounting channel 302 away from the mounting hole 301, a through hole is formed in the middle of the threaded lug 303 for the dismounting rod 2 to pass through, and the surface of the threaded lug 303 is provided with threads matched with the first transmission screw thread hole 31.
[0025] As Figure 6 shown, when the extrusion screw rod 20 is assembled to the speed reducer 30, after the connecting screw thread part 21 of the dismounting rod 2 is screwed with the extrusion screw rod 20, the extrusion screw rod 20 is hoisted and the dismounting rod 2 is passed through the speed reducer 30 from front to back, the fixing nut 3 is sleeved on the dismounting rod 2 outside the speed reducer, when the second transmission screw thread hole 32 of the fixing nut 3 is matched with the transmission screw thread part 23, the fixing nut 3 is rotated, through the screw transmission principle, the dismounting rod 2 drives the extrusion screw rod 20 to move backward relative to the fixing nut 3 when the fixing nut 3 is rotated, until the transmission end 201 of the extrusion screw rod 20 is assembled into the mounting hole 301, the dismounting rod 2 is rotated in the opposite direction to be dismounted from the extrusion screw rod 20, and the installation of the extrusion screw rod 20 is completed.
[0026] As Figure 5As shown, when the extrusion screw 20 is disassembled from the speed reducer 30, the fixing nut 3 is first screwed on the threaded boss 303 of the speed reducer 30, and then the top block 1 is screwed on the connecting thread part 21. The assembly of the top block 1 and the disassembly rod 2 is passed through the fixing nut 3 from back to front. When the second transmission thread hole 32 of the fixing nut 3 and the transmission thread part 23 are connected, the hexagonal head 24 is clamped by the wrench to rotate the disassembly rod 2. Through the screw transmission principle, the rotating disassembly rod 2 moves forward relative to the fixing nut 3. When the top block 1 and the transmission end 201 are in contact, the disassembly rod 2 continues to rotate until the transmission end 201 is completely withdrawn from the mounting hole 301. Then the fixing nut 3 is rotated in the opposite direction to disassemble the disassembly tool 10 from the speed reducer 30, and the disassembly of the extrusion screw 20 is completed.
[0027] The disassembly tool 10 is assembled and disassembled by pulling the extrusion screw in the front-back direction, which does not cause impact stress to the extrusion screw. The fixing nut is connected with the speed reducer through threads, which reduces the damage degree of the speed reducer.
[0028] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. The scope of protection of the present application is defined by the appended claims, specification and equivalents thereof.
Claims
1. A disassembling tool characterized by comprising: The utility model relates to a top block, dismounting rod and fixed nut, the dismounting rod extends in the front and back direction, and the front and back are connected in order for connecting screw thread part, rod body part, transmission screw thread part and hexagonal head part, the connecting screw thread part has the connecting screw thread that extends from the front to back spiral, transmission screw thread part has the transmission screw thread that extends from the front to back spiral, the inside of top block is equipped with first threaded hole, first threaded hole with connecting screw thread matches, the inside of fixed nut is equipped with first transmission threaded hole and second transmission threaded hole and is mutually same axis arrangement and intercommunication, first transmission threaded hole is located the front side of second transmission threaded hole, and the inside diameter of first transmission threaded hole is greater than the inside diameter of second transmission threaded hole, second transmission threaded hole with transmission screw thread matches.
2. The tool of claim 1, wherein The outer wall surface of the fixed nut is inserted with a plurality of handles, the plurality of handles are arranged along the circumference of the fixed nut, and each handle extends along the radial direction of the fixed nut.
3. The tool of claim 1, wherein The length of the transmission screw thread part is greater than one third of the length of the dismounting rod and less than one half of the length of the dismounting rod.
4. The tool of claim 1 wherein, The bottom diameter of the transmission screw thread part is greater than the bottom diameter of the rod body part, and the bottom diameter of the rod body part is greater than the outer diameter of the connecting screw thread part.