Assembly tool for breast rotary cutting biopsy needle

Abstract

The utility model discloses an assembly tool for a breast rotary cutting biopsy needle, which comprises a manual press machine, a press fit tool bottom plate is arranged on a table top of the manual press machine, a lower shell fixing plate is arranged on the upper surface of the press fit tool bottom plate, the bottom of a lower pressing shaft of the manual press machine is connected with an upper shell press fit plate, and a lower shell fixing plate is arranged on the lower surface of the upper shell press fit plate. The four corners of the pressing tool bottom plate are each provided with a screw hole, and the left side and the right side of the upper surface of the pressing tool bottom plate are symmetrically provided with two positioning pins. According to the assembly tool for the breast rotary-cut biopsy needle, the press-fit tool bottom plate, the lower shell fixing plate, the upper shell press-fit plate and the manual press machine are arranged, so that the breast rotary-cut biopsy needle can be conveniently and rapidly positioned in each assembly process, the assembly consistency of each process is improved, and the consistency of the whole product is further improved.

Description

Technical Field

[0001] This utility model relates to the field of biopsy needle technology, specifically to an assembly tooling for a breast biopsy needle. Background Technology

[0002] The disposable breast biopsy needle, as a disposable medical consumable, has a complex internal structure and numerous assembly steps. The assembly sequence is as follows: first, assemble the internal structural components into their designated positions in the lower shell; then, press the upper shell together with the lower shell; and finally, test the assembly. Currently, production relies primarily on manual labor and simple tooling. Workers first install the internal parts into the lower shell according to a prescribed sequence, place them on a tray, and then manually press the upper shell together with the lower shell using simple tooling to complete the assembly. Figure 1-2 The illustration shows that this assembly method involves single-process centralized operation, where all lower shell component assembly processes are completed before proceeding to the next pressing process. This results in low production efficiency, difficulty in ensuring product assembly consistency, and a large footprint due to the centralized stacking of semi-finished components. With increasing production capacity demands, there is a need to further improve production efficiency and assembly consistency. Existing assembly methods, tooling, and processes cannot meet these requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an assembly tooling for a breast biopsy needle, which facilitates the rapid positioning of products in each process, improves the consistency of assembly in each process, and thus improves the consistency of the entire product, effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An assembly fixture for a breast biopsy needle includes a manual press, a pressing fixture base plate is mounted on the table of the manual press, a lower shell fixing plate is provided on the upper surface of the pressing fixture base plate, and an upper shell pressing plate is connected to the bottom of the lower pressing shaft of the manual press.

[0006] Each of the four corners of the pressing fixture base plate is provided with a screw hole, and two positioning pins are symmetrically provided on the left and right sides of the upper surface of the pressing fixture base plate.

[0007] The lower shell fixing plate has a positioning hole at each end that mates with the positioning pin, and the upper surface of the lower shell fixing plate has multiple brackets.

[0008] The bottom of the upper shell pressing plate is provided with multiple pressing blocks.

[0009] As a preferred embodiment of this utility model, the height of the positioning pin is 5-10mm, and the top edge of the positioning pin has a rounded corner structure.

[0010] As a preferred embodiment of this utility model, one of the positioning holes is a round hole, and the other positioning hole is a waist hole.

[0011] In a preferred embodiment of this invention, the bracket and the pressure block are positioned correspondingly.

[0012] As a preferred embodiment of this utility model, an installation screw that mates with the table surface of the manual press is installed in the screw hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The assembly fixture for this breast biopsy needle facilitates rapid positioning of the product in each assembly process by setting up a pressing fixture base plate, a lower shell fixing plate, an upper shell pressing plate, and a manual press. This improves the consistency of assembly in each process and thus enhances the consistency of the entire product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of the lower shell component in the prior art.

[0016] Figure 2 This is a schematic diagram of the biopsy needle assembly structure in the prior art.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the side structure of the base plate of the pressing tool of this utility model.

[0019] Figure 5 This is a top view of the base plate of the pressing tool of this utility model.

[0020] Figure 6 This is a schematic diagram of the side structure of the lower shell fixing plate of this utility model.

[0021] Figure 7 This is a top view of the lower shell fixing plate of this utility model.

[0022] Figure 8 This is a schematic diagram of the assembly structure of the lower shell component of this utility model.

[0023] Figure 9 This is a schematic diagram of the upper shell pressing plate structure of this utility model.

[0024] In the diagram: 1. Pressing fixture base plate, 1-1. Positioning pin, 2. Lower shell fixing plate, 2-1. Positioning hole, 2-2. Upper shell pressing plate, 3. Pressing block, 3-1. Manual press, 4. Lower shell assembly, 5. Tray, 6. Lower shell fixing seat, 7. Upper shell, 8. Upper and lower shell positioning posts, 9. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-9 This utility model provides a technical solution:

[0027] An assembly fixture for a breast biopsy needle includes a manual press 4, a pressing fixture base plate 1 is installed on the table of the manual press 4, a lower shell fixing plate 2 is provided on the upper surface of the pressing fixture base plate 1, and an upper shell pressing plate 3 is connected to the bottom of the lower pressing shaft of the manual press 4.

[0028] A screw hole is provided at each of the four corners of the pressing fixture base plate 1, and two positioning pins 1-1 are symmetrically provided on the left and right sides of the upper surface of the pressing fixture base plate 1.

[0029] The lower shell fixing plate 2 has a positioning hole 2-1 at each end that mates with the positioning pin 1-1. The upper surface of the lower shell fixing plate 2 is provided with multiple brackets 2-2. The upper part of the lower shell assembly 5 is provided with multiple upper and lower shell positioning posts 9.

[0030] Multiple pressure blocks 3-1 are provided at the bottom of the upper shell pressing plate 3.

[0031] The height of the positioning pin 1-1 is 8mm. The top edge of the positioning pin 1-1 has a rounded corner structure. The rounded corner structure at the top of the positioning pin 1-1 makes it easy to assemble with the positioning hole 2-1, which facilitates the quick positioning of the lower shell fixing plate 2.

[0032] One of the positioning holes 2-1 is a round hole, and the other positioning hole 2-1 is a waist hole.

[0033] The positions of bracket 2-2 and pressure block 3-1 correspond to each other.

[0034] The screw holes are fitted with mounting screws that mate with the four surfaces of the manual press.

[0035] In the existing assembly process, multiple lower shell components 5 with their internal parts assembled are placed in the fixed groove on the upper surface of the tray 6, and then the lower shell components 5 are placed on the lower shell fixing seat 7. The upper shell 8 and the lower shell components 5 are manually pressed together. This assembly method is a single-process concentrated operation. After all the previous lower shell component 5 assembly processes are completed, they are transferred to the next pressing process together. The production efficiency is low, the product assembly consistency is difficult to guarantee, and the concentrated stacking of semi-finished components occupies a large production space.

[0036] When using the assembly fixture for this breast biopsy needle, the base plate 1 of the pressing fixture is fixed to the table of the manual press machine 4 by installing screws in the screw holes. Then, the lower shell fixing plate 2 is installed on the upper surface of the base plate 1 of the pressing fixture, and the positioning pin 1-1 is inserted into the positioning hole 2-1. The positioning pin 1-1 and the positioning hole 2-1 are transitionally fitted. The height of the positioning pin 1-1 is preferably 8mm.

[0037] Five brackets 2-2 are provided on the upper surface of the lower shell fixing plate 2. Their shapes are completely matched with the corresponding shapes of the lower shell assembly 5, so that the lower shell assembly 5 can be completely positioned in the lower shell fixing plate 2. One of the positioning holes 2-1 at both ends of the lower shell fixing plate 2 is a round hole and the other is a waist hole. The diameter D of the two positioning holes 2-1 is a transition fit value with the diameter d of the positioning pins 1-1 on the pressing tool base plate 1. The distance L2 between the two positioning holes 2-1 is consistent with the distance L1 between the two positioning pins 1-1 on the pressing tool base plate 1. The positions of the five brackets 2-2 are consistent with the upper and lower shell positioning posts 9 on the lower shell assembly 5.

[0038] The top of the upper shell pressing plate 3 is connected to the lower pressing shaft of the manual press 4. The bottom of the upper shell pressing plate 3 is provided with 5 pressing blocks 3-1. The shape of the pressing blocks 3-1 is completely matched with the shape of the corresponding part of the upper shell 8. The spacing between the multiple pressing blocks 3-1 is consistent with the spacing of the 5 brackets 2-2 provided on the lower shell fixing plate 2, so as to ensure that the pressure applied by the upper shell pressing plate 3 to the upper shell 8 is uniform during the pressing process.

[0039] The manual press 4 is equipped with a limit mechanism that forms both upper and lower limits to ensure that the upper shell pressing plate 3 has a consistent stroke each time it is pressed down, thereby ensuring the consistency of the pressing of the upper and lower shells of the breast biopsy needle and improving the consistency of product assembly.

[0040] The upper shell 8 is secured to the lower shell assembly 5 using the upper and lower shell positioning pins 9.

[0041] After the design of this tooling, the "lower shell assembly process - upper and lower shell pressing process - upper and lower shell pressing test process" of the breast biopsy needle can be transformed from a single-process centralized operation to a flow operation, which speeds up production efficiency. The specific implementation is as follows: First, the lower shell assembly 5 is placed in the lower shell fixing plate 2 for positioning. Then, the internal parts are installed into the corresponding positions in sequence to complete the assembly of the lower shell assembly 5. The assembled lower shell assembly 5 and the lower shell fixing plate 2 flow together into the next process - upper and lower shell pressing. The assembly after upper and lower shell pressing, together with the lower shell fixing plate 2, flows into the next process "upper and lower shell pressing test". The lower shell fixing plate 2 serves as a transfer tooling in the entire production process. Multiple plates are prepared in the production process to facilitate the flow operation.

[0042] This assembly fixture design optimizes the breast biopsy needle assembly process, transforming it from a single-process, centralized operation to a streamlined process, thus improving production efficiency and meeting capacity expansion requirements. Furthermore, the optimized fixture facilitates rapid product positioning at each stage, enhancing assembly consistency and ultimately improving overall product consistency.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly tooling for a breast biopsy needle, comprising a manual press (4), characterized in that: The manual press (4) has a pressing fixture base plate (1) installed on its table. The upper surface of the pressing fixture base plate (1) is provided with a lower shell fixing plate (2). The bottom of the lower pressing shaft of the manual press (4) is connected to an upper shell pressing plate (3). The pressing fixture base plate (1) has a screw hole at each of its four corners, and two positioning pins (1-1) are symmetrically arranged on the left and right sides of the upper surface of the pressing fixture base plate (1). The lower shell fixing plate (2) has a positioning hole (2-1) at each end that cooperates with the positioning pin (1-1), and the upper surface of the lower shell fixing plate (2) is provided with multiple brackets (2-2). The bottom of the upper shell pressing plate (3) is provided with multiple pressing blocks (3-1).

2. The assembly fixture for the breast biopsy needle according to claim 1, characterized in that: The height of the positioning pin (1-1) is 5-10mm, and the top edge of the positioning pin (1-1) has a rounded corner structure.

3. The assembly fixture for the breast biopsy needle according to claim 1, characterized in that: One of the positioning holes (2-1) is a round hole, and the other positioning hole (2-1) is a waist hole.

4. The assembly fixture for the breast biopsy needle according to claim 1, characterized in that: The bracket (2-2) and the pressure block (3-1) are positioned correspondingly.

5. The assembly fixture for the breast biopsy needle according to claim 1, characterized in that: The screw hole is fitted with a mounting screw that mates with the table of the manual press (4).

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