Charging tool for heat treatment homogenization of small roller pin
By designing stainless steel braided bottom mesh and cover mesh, combined with the limit of the chassis column, the problem of small needle rolling out and accumulation in the heat treatment is solved, and the stable positioning and multiple use of the needle rolling is achieved, reducing costs and ensuring uniformity of the heat treatment.
Patent Information
- Application Number
- CN202422487762.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing small-sized needles are prone to float out and accumulate due to lightness during the heat treatment process, resulting in quantity loss and uneven quality. The mesh deformed at high temperatures lead to omissions, which is costly and difficult to reuse.
Design a loading tool including a bottom mesh and a cover mesh. The mesh surface is made of stainless steel, the holes are smaller than the end face of the needle roller, and the surroundings are reinforced with stainless steel welding rods. Combined with the limit of the chassis column, the needle roller is ensured to be stable in position.
The stability and multiple useability of small needle rollers during the heat treatment process are achieved, losses and omissions are avoided, costs are reduced and uniformity of heat treatment are ensured.
Smart Images
Figure CN223304506U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a charging tool, in particular to a charging tool for uniform heat treatment of a small-sized needle roller. Background Art
[0002] The existing small needle rollers are cylindrical, with a diameter of 5-10mm and a length of 5-15mm. When loading the small needle rollers, the existing process is to temporarily use a fine wire mesh under the small needle rollers. The mesh can only be used once and then scrapped, which is costly.
[0003] During heat treatment, since small needle rollers are small and light, when they enter the quenching oil, the stirring fan in the quenching oil is turned on, causing the small needle rollers to accumulate centrifugally and a large number of small needle rollers to float out of the mesh, which seriously affects the quantity and quality of the small needle rollers. This tooling is specially designed to avoid risks;
[0004] At the same time, the mesh hole spacing becomes larger after being heated, causing small roller needles to be missed. The mesh has no reinforcement structure and is easily deformed after being heated, which also causes small roller needles to be missed. Utility Model Content
[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, a loading tool for uniform heat treatment of a small needle roller is provided.
[0006] The utility model solves the technical problem by adopting the following technical solution: a loading tool for uniform heat treatment of small needle rollers, comprising a bottom net and a cover net, the cover net being covered on the bottom net, the bottom net and the cover net both comprising a mesh surface and a mesh frame, the mesh surface being woven by metal wire, the mesh frame being arranged around the mesh surface, the size of the holes on the mesh surface being smaller than the size of the end face of the small needle roller.
[0007] Furthermore, it also includes a chassis, which is rectangular and has vertically arranged columns at the four corners of the chassis. The bottom net and the cover net are arranged in the middle area surrounded by the four columns. The four corners of the bottom net and the cover net have a yield structure that cooperates with the column limiters.
[0008] Furthermore, the mesh surface is made of stainless steel.
[0009] Furthermore, the size of the holes on the mesh surface is 2 mm smaller than the size of the end surface of the small needle roller.
[0010] Furthermore, the mesh frame is a stainless steel bar, and the mesh frame is welded to the mesh surface.
[0011] The beneficial effects of the utility model are as follows: the small-scale needle roller heat treatment uniformity loading tool of the utility model has the characteristics of simple structure, easy operation, high stability, low cost and durability. Specifically:
[0012] 1. To solve the problem of small needle rollers floating out in the quenching oil due to their small size and light weight, which may cause small needle roller losses and claims, stainless steel wire is used to weave the bottom mesh and cover mesh. The mesh size is controlled to prevent the small needle rollers from leaking out. At the same time, thicker stainless steel welding rods are used around the stainless steel wire for reinforcement. Stainless steel wire has good toughness and heat resistance, and is not easily deformed after repeated heat treatment. The weaving method can greatly control the mesh size. The use of welding rods for reinforcement can further prevent thermal deformation of the mesh frame. Small needle rollers will not leak out of the tooling, and the tooling will not deform easily after repeated use.
[0013] 2. In order to ensure the uniformity of heat treatment, the stirring fan in the quenching oil needs to be turned on, which will cause the centrifugal accumulation of small needle rollers and affect the indicators. Stainless steel wire is used to weave a mesh, which is about 2mm smaller than the size of the small needle rollers. At the same time, thicker stainless steel bars are used to reinforce the mesh to prevent the small needle rollers from overflowing. At the same time, the slight deformation of the tooling after heat treatment is taken into account, which may cause the cover mesh to be unable to be removed. Using welding rods for reinforcement can further prevent the thermal deformation of the mesh surface. The cover mesh can be easily removed from the chassis and is not easily deformed after repeated use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 This is a schematic diagram of the structure of the utility model after the chassis, bottom net, small roller needle and cover net are assembled;
[0016] Figure 2 yes Figure 1 Structural diagram from another angle;
[0017] Figure 3 yes Figure 1 Enlarged view of point A in the middle.
[0018] In the figure: 1- bottom net; 2- cover net; 3- net surface; 4- net frame; 5- eyelet; 6- chassis; 7- column; 8- give way structure; 9- small roller needle. DETAILED DESCRIPTION
[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] Note: Due to the small mesh spacing of the mesh surface 3, displaying all of them will result in "black blocks" appearing in the attached figure. Figure 1 The middle grid surface 3 uses partial display.
[0021] Figures 1 to 3 The shown loading tool for uniform heat treatment of small needle rollers includes a bottom net 1 and a cover net 2. The bottom net 1 and the cover net 2 have the same structure. In order to facilitate transportation and enhance the supporting capacity of the bottom net 1, a chassis 6 may also be included. The chassis 6 is usually rectangular, and the four corners of the rectangular chassis have vertically installed columns 7. The bottom net 1 and the cover net 2 are placed in the middle area surrounded by the four columns 7. In order to prevent the bottom net 1 and the cover net 2 from shaking during transportation and processing, thereby causing the small needle rollers 9 to be missed, overturned and floated out, the four corners of the bottom net 1 and the cover net 2 have a yield structure 8 that cooperates with the column 7 to limit the position. The yield structure 8 is an arc surface that is gap-matched with the circular surface of the column 7.
[0022] The cover net 2 is covered on the bottom net 1 to form a combination, and the number of combinations can be multiple groups. The bottom net 1 and the cover net 2 both include a mesh surface 3 and a mesh frame 4. The mesh surface 3 is woven from metal wire, and a mesh frame 4 is arranged around the mesh surface 3. In order to prevent the small needle roller 9 from falling from the hole 5, the size of the hole 5 on the mesh surface 3 is smaller than the size of the end face of the small needle roller 9. Usually, the size of the hole 5 on the mesh surface 3 is 2 mm smaller than the size of the end face of the small needle roller 9.
[0023] From the perspective of cost and durability, the mesh surface 3 is made of stainless steel, the mesh frame 4 is a stainless steel bar, and the mesh frame 4 is welded to the mesh surface 3.
[0024] In actual use:
[0025] S1: Place the bottom net 1 between the four uprights of the chassis 6. The uprights can effectively limit the bottom net 1 to prevent shaking.
[0026] S2: small roller needles 9 are evenly spread on the bottom net 1;
[0027] S3: After a certain number of small needle rollers 9 are loaded, the cover net 2 is placed on the small needle rollers 9, and the bottom net 1 and the mesh frame 4 on the outer ring of the cover net 2 are combined to prevent the small needle rollers 9 from overflowing;
[0028] S4: Repeat steps S1-S3 in sequence until a sufficient amount is loaded and then put into the furnace for heat treatment.
[0029] or
[0030] S1: Place the bottom net 1 between the four uprights of the chassis 6. The uprights can effectively limit the bottom net 1 to prevent shaking.
[0031] S2: small roller needles 9 are evenly spread on the bottom net 1;
[0032] S3: After a certain number of small needle rollers 9 are loaded, the cover net 2 is placed on the small needle rollers 9, and the bottom net 1 and the mesh frame 4 on the outer ring of the cover net 2 are combined to prevent the small needle rollers 9 from overflowing;
[0033] S4: evenly spread the small roller needles 9 on the cover mesh 2;
[0034] S5: After a certain number of small needle rollers 9 are loaded, the cover net 2 is placed on the small needle rollers 9, and the mesh frames 4 of the upper and lower outer circles of the cover nets 2 are combined to prevent the small needle rollers 9 from overflowing;
[0035] S6: Repeat steps S4-S5 in sequence until a sufficient amount is loaded and then put into the furnace for heat treatment.
[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A small needle roller heat treatment homogenization loading tool, characterized by: The invention comprises a bottom net (1) and a cover net (2), wherein the cover net (2) covers the bottom net (1), and both the bottom net (1) and the cover net (2) comprise a mesh surface (3) and a mesh frame (4). The mesh surface (3) is woven from metal wires, and the mesh frame (4) is arranged around the mesh surface (3). The size of the holes (5) on the mesh surface (3) is smaller than the size of the end face of the small needle roller.
2. The loading fixture for uniform heat treatment of small needle rollers according to claim 1, characterized in that: The invention also includes a chassis (6) which is rectangular, and has vertically arranged upright posts (7) at the four corners of the chassis (6). The bottom net (1) and the cover net (2) are arranged in the middle area surrounded by the four upright posts (7), and the four corners of the bottom net (1) and the cover net (2) have a yielding structure (8) which cooperates with the upright posts (7) in a limiting manner.
3. The loading fixture for uniform heat treatment of small needle rollers according to claim 1, characterized in that: The mesh surface (3) is made of stainless steel.
4. The loading fixture for uniform heat treatment of small needle rollers according to claim 1, characterized in that: The size of the holes (5) on the mesh surface (3) is 2 mm smaller than the size of the end surface of the small needle roller.
5. The loading tool for uniform heat treatment of small needle rollers according to claim 1, characterized in that: The mesh frame (4) is a stainless steel bar, and the mesh frame (4) is welded to the mesh surface (3).