Positioning tool for snap machining of a bushing

Abstract

This utility model belongs to the field of bushing processing technology, specifically relating to a positioning fixture for processing bushing latches. It includes an upper mold and a lower mold. The upper mold includes a top plate, a fixed plate, a mounting plate, four positioning rods, a push rod, and a punch head. The fixed plate is fixedly connected to the bottom of the top plate, and both the top plate and the fixed plate share a through hole. The mounting plate is located below the fixed plate and has a guide limiting groove. The top ends of the four positioning rods are fixed to the bottom of the fixed plate, and the bottom ends of the four positioning rods pass through the mounting plate and extend downwards. The push rod passes through the through hole, and the punch head passes through the guide limiting groove and is fixedly connected to the push rod. The lower mold includes a bottom plate and a base. The base is fixed above the bottom plate and has four positioning holes and a processing groove. This utility model has a simple structure, is easy to use, facilitates positioning between the upper and lower molds, avoids misalignment, improves processing accuracy, and ensures product quality.

Description

Technical Field

[0001] This utility model belongs to the field of bushing processing technology, and specifically relates to a positioning tooling for processing bushing snap fasteners. Background Technology

[0002] Bushings are commonly used components in industries such as automation and engineering machinery. They are made of composite materials, commonly steel backing + copper layer + PTFE layer, or steel backing + copper layer + PEEK layer, etc. The bushing is pressed into the bearing housing bore using an interference fit, while the inner bore of the bushing and the moving shaft use a clearance fit for reciprocating or rotary motion. There are two common types of bushings: straight-cut and snap-fit.

[0003] Currently, when processing the latches of hook-and-loop bushings, it is necessary to first use a mold to fix the steel strip to be processed, and then stamp it to form the latches. However, during the mold assembly process, the lack of a positioning mechanism between the upper and lower molds can easily lead to misalignment, resulting in low processing accuracy, defective products, and affecting product quality.

[0004] Therefore, there is an urgent need for a positioning fixture for the processing of bushing latches to solve the above problems. Utility Model Content

[0005] To address the aforementioned deficiencies in the existing technology, this utility model provides a positioning fixture for processing buckles of bushings, including an upper mold and a lower mold. The upper mold includes a top plate, a fixed plate, a mounting plate, four positioning rods, a push rod, and a punch head. The fixed plate is fixedly connected to the bottom of the top plate, and the top plate and the fixed plate are both provided with a through hole running vertically through the top and bottom. The mounting plate is located below the fixed plate and has a guide limiting groove corresponding to the through hole. The top ends of the four positioning rods are all fixed to the bottom of the fixed plate, and the bottom ends of the four positioning rods all pass through the mounting plate and extend downwards. The positioning rods are fixedly connected to the mounting plate. The push rod passes through the through hole, and the punch head passes through the guide limiting groove. The top of the punch head is fixedly connected to the bottom end of the push rod.

[0006] The lower mold is located below the upper mold. The lower mold includes a base plate and a base. The base is fixed above the base plate. The base has four positioning holes and a machining groove. The four positioning holes correspond to the positions of the four positioning rods, and the machining groove corresponds to the position of the guide limit groove.

[0007] Optionally, two fixing posts are fixedly connected between the mounting plate and the fixing plate, and the two fixing posts are respectively located at the left and right ends of the mounting plate.

[0008] Optionally, both the guide limiting groove and the machining groove are matched to the shape of the stamping head.

[0009] Specifically, the stamping head, guide limiting groove and processing groove are respectively provided with groove molds on both sides that are adapted to the shape of the bushing's hook and loop fastener, so as to facilitate the stamping of steel strip.

[0010] Optionally, the length of the push rod is greater than the sum of the thicknesses of the top plate and the fixed plate, and the length of the punch head is equal to the sum of the length of the fixed column and the thickness of the mounting plate.

[0011] Specifically, the length of the top rod is 3-5 cm longer than the sum of the thicknesses of the top plate and the fixed plate.

[0012] Optionally, a material leakage hole corresponding to the processing groove is provided on the base plate, and the area of ​​the material leakage hole is larger than the area of ​​the bottom opening of the processing groove.

[0013] Specifically, the material leakage hole facilitates material leakage.

[0014] This invention also includes other components that enable the positioning fixture for processing a bushing latch to function properly, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art.

[0015] The working principle of this utility model is as follows: First, the steel strip to be processed is placed horizontally on the base of the lower mold, while the steel strip covers the processing groove. Then, the upper mold is placed on the lower mold, and the bottom ends of the four positioning rods of the upper mold are inserted into the four positioning holes of the base of the lower mold to complete the positioning of the upper and lower molds. Then, the hydraulic cylinder applies downward pressure to the push rod, thereby driving the punch head to punch the steel strip. The guide and limit groove can provide guidance and limit for the punch head during its downward movement, facilitating accurate punching. After the punching is completed, the push rod is pulled upward to drive the punch head to move upward, remove the upper mold, and take off the processed steel strip, so that the next round of punching operation can begin.

[0016] The advantages of this utility model are that it has a simple structure, is easy to use, facilitates positioning between the upper and lower molds, avoids misalignment, improves processing accuracy, and ensures product quality. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the upper mold of this utility model.

[0020] Figure 3 This is a schematic diagram of the bottom structure of the upper mold of this utility model.

[0021] Figure 4This is a schematic diagram of the lower mold of this utility model.

[0022] In the diagram: 1. Top plate, 2. Fixing plate, 3. Mounting plate, 4. Positioning rod, 5. Top rod, 6. Punching head, 7. Fixing column, 8. Guide limiting groove, 9. Bottom plate, 10. Base, 11. Positioning hole, 12. Machining groove, 13. Material leakage hole, 14. Steel strip. Detailed Implementation

[0023] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0024] Example

[0025] like Figures 1-4 As shown, this utility model embodiment provides a positioning fixture for processing buckles of bushings, including an upper mold and a lower mold. The upper mold includes a top plate 1, a fixed plate 2, a mounting plate 3, four positioning rods 4, a top rod 5, and a punch head 6. The fixed plate 2 is fixedly connected to the bottom of the top plate 1, and the top plate 1 and the fixed plate 2 are provided with a through hole that runs vertically through the top and bottom. The mounting plate 3 is located below the fixed plate 2, and two fixing posts 7 are fixedly connected between the mounting plate 3 and the fixed plate 2. The two fixing posts 7 are respectively located at the left and right ends of the mounting plate 3. The mounting plate 3 has a guide limiting groove 8 corresponding to the through hole. The top ends of the four positioning rods 4 are all fixed to the bottom of the fixed plate 2, and the bottom ends of the four positioning rods 4 pass through the mounting plate 3 and extend downward. The positioning rods 4 and the mounting plate 3 are fixedly connected. The top rod 5 passes through the through hole, and the punch head 6 passes through the guide limiting groove 8. The top of the punch head 6 is fixedly connected to the bottom end of the top rod 5.

[0026] The lower mold is located below the upper mold. The lower mold includes a base plate 9 and a base 10. The base 10 is fixed above the base plate 9. The base 10 has four positioning holes 11 and a processing groove 12. The four positioning holes 11 correspond to the positions of the four positioning rods 4, and the processing groove 12 corresponds to the position of the guide limiting groove 8. The base plate 9 has a material leakage hole 13 corresponding to the processing groove 12. The area of ​​the material leakage hole 13 is larger than the area of ​​the bottom groove of the processing groove 12. The material leakage hole 13 facilitates material leakage.

[0027] In addition, the guide limiting groove 8 and the processing groove 12 are both matched with the shape of the stamping head 6, and the stamping head 6, the guide limiting groove 8 and the processing groove 12 are respectively provided with groove dies that are adapted to the shape of the buckle of the bushing, so as to facilitate the stamping of the steel strip 14. The length of the push rod 5 is slightly larger than the sum of the thickness of the top plate 1 and the fixed plate 2 by 5cm, and the length of the stamping head 6 is equal to the sum of the length of the fixed column 7 and the thickness of the mounting plate 3.

[0028] The working principle of this utility model is as follows: First, the steel strip 14 to be processed is placed horizontally on the base 10 of the lower mold, while the steel strip 14 covers the processing groove 12. Then, the upper mold is placed on the lower mold, and the bottom ends of the four positioning rods 4 of the upper mold are respectively inserted into the four positioning holes 11 of the base 10 of the lower mold to complete the positioning of the upper mold and the lower mold. Then, the hydraulic cylinder applies downward pressure to the push rod 5, thereby driving the stamping head 6 to stamp the steel strip 14. The guide limiting groove 8 can provide guidance and limit for the stamping head 6 during its downward movement, facilitating its accurate stamping. After the stamping is completed, the push rod 5 is pulled upward to drive the stamping head 6 to move upward, the upper mold is removed, the processed steel strip 14 is taken off, and the next round of stamping operation can begin.

[0029] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A positioning fixture for processing the buckle of a bushing, comprising an upper mold and a lower mold, characterized in that: The upper mold includes a top plate, a fixed plate, a mounting plate, four positioning rods, an ejector rod, and a punch head. The fixed plate is fixedly connected to the bottom of the top plate, and the top plate and the fixed plate are both provided with a through hole running vertically through the top and bottom. The mounting plate is located below the fixed plate and has a guide limiting groove corresponding to the through hole. The top ends of the four positioning rods are all fixed to the bottom of the fixed plate, and the bottom ends of the four positioning rods all pass through the mounting plate and extend downwards. The positioning rods and the mounting plate are fixedly connected. The ejector rod passes through the through hole, and the punch head passes through the guide limiting groove. The top of the punch head is fixedly connected to the bottom end of the ejector rod. The lower mold is located below the upper mold. The lower mold includes a base plate and a base. The base is fixed above the base plate. The base has four positioning holes and a machining groove. The four positioning holes correspond to the positions of the four positioning rods, and the machining groove corresponds to the position of the guide limit groove.

2. The positioning fixture for processing the buckle of the bushing according to claim 1, characterized in that: There are two fixing posts that are fixedly connected between the mounting plate and the fixing plate, and the two fixing posts are respectively located at the left and right ends of the mounting plate.

3. The positioning fixture for processing the buckle of the bushing according to claim 2, characterized in that: Both the guide and limiting grooves and the machining grooves are matched to the shape of the stamping head.

4. The positioning fixture for processing the buckle of the bushing according to claim 3, characterized in that: The length of the top rod is greater than the sum of the thicknesses of the top plate and the fixed plate, and the length of the stamping head is equal to the sum of the length of the fixed column and the thickness of the mounting plate.

5. The positioning fixture for processing the buckle of the bushing according to claim 4, characterized in that: The base plate has a material leakage hole corresponding to the processing groove, and the area of ​​the material leakage hole is larger than the area of ​​the bottom opening of the processing groove.

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