A same-core needle pneumatic four-jaw crimping tool

Abstract

This utility model relates to a pneumatic four-jaw crimping fixture for concentric needles, comprising a base assembly, a cylinder assembly, a solenoid valve assembly, and a pipe connector assembly. The base assembly has an air inlet on one side and includes a base plate. The cylinder assembly is located at the lower middle position of the upper surface of the base plate, and a bracket is located at the center of the cylinder assembly. The bracket is connected to a positioning assembly. A pressure head assembly is mounted on the cylinder assembly. The solenoid valve assembly is mounted on the base plate and connected to the pipe connector assembly, which in turn is connected to the cylinder assembly. This utility model connects an air source to the cylinder assembly through an inlet on the base assembly, allowing for pressure testing and adjustment of various parameters and dimensional requirements, thus achieving the crimping of the concentric needle assembly. This solves the problems of inconvenience, inaccuracy, low efficiency, and high workload in the concentric needle crimping process. The air source is connected to the cylinder assembly through an inlet on the base assembly for pressure testing and adjustment of various parameters and dimensional requirements.

Description

Technical Field

[0001] This utility model belongs to the field of small medical device processing technology, specifically relating to a pneumatic four-jaw crimping tool for concentric needles. Background Technology

[0002] Crimped concentric pins are made by crimping together parts made of lead-free copper, stainless steel tubing, steel wire, and conductors. Because the dimensions of each part are extremely small—the smallest steel wire diameter is 0.08mm—it is challenging to crimp the tiny wire tightly to its connector while maintaining conductivity, and to prevent it from detaching under a 2N insertion / extraction force. Achieving both proper crimping without damage or deformation exceeding the required outer diameter is a difficult task given current methods.

[0003] Previously, this part was processed on the production line using crimping pliers and a purely manual method. This method was slow and resulted in inconsistent quality. Because it was manual crimping—using the crimping pliers by hand to tighten and press the workpiece—the varying force applied led to inconsistent product quality. While crimping a few or a dozen parts a day was achievable, crimping dozens or hundreds was difficult, increasing the workload for employees without guaranteeing quality and resulting in a low first-pass yield. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems. This application proposes a pneumatic four-jaw crimping tool with a concentric needle. The overall structure is simple, compact and flexible, with a stable shape and a high first-pass yield. It reduces material costs, reduces the labor intensity of employees, and improves the quality of crimping work.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic four-jaw crimping fixture for concentric needles, comprising a base assembly, a cylinder assembly, a solenoid valve assembly, and a pipe connector assembly. The base assembly has an air inlet on one side. The base assembly includes a base plate. A cylinder assembly is located at the lower middle position of the upper surface of the base plate. A bracket is located at the center of the cylinder assembly. The bracket is connected to a positioning assembly. A pressure head assembly is mounted on the cylinder assembly. The solenoid valve assembly is mounted on the base plate and connected to the pipe connector assembly. The pipe connector assembly is connected to the cylinder assembly.

[0006] The pipe fitting assembly includes a PL quick-connect pneumatic pipe fitting, a pneumatic fitting exhaust throttle valve, and a pneumatic hose; the solenoid valve assembly includes a two-position five-way solenoid valve, a BSL pagoda pneumatic silencer, a PC quick-connect pneumatic pipe fitting, and screws.

[0007] Furthermore, the base plate is also equipped with a switch assembly and a power supply assembly. The power supply assembly includes a 250V / 6A two-prong flat plug with a tail wire and a solenoid valve controller. The switch assembly includes a push-button switch socket and a self-resetting, lock-free inching push-button switch.

[0008] Furthermore: the cylinder assembly is a four-jaw cylinder, the pressure head assembly has four parts respectively installed on the four jaws of the four-jaw cylinder, and the pressure head in the pressure head assembly is made of hard alloy material 40Cr.

[0009] Furthermore, the base plate is provided with four environmentally friendly rubber feet fixed by stainless steel screws around its lower perimeter, and the base plate is made of 304 stainless steel.

[0010] Furthermore: the positioning component and the bracket are connected by stainless steel screws and maintain coaxiality, and both the bracket component and the positioning component are made of POM material.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model crimping fixture includes a cylinder assembly, a positioning assembly, a support assembly, and a pressing head assembly, solving the problems of inconvenience, inaccuracy, low efficiency, and high workload in the crimping process of concentric needles. An air source is connected to the cylinder assembly through the inlet on the base assembly to test pressure and adjust various parameters and dimensional requirements. A switch button controls the crimping and retraction of the pressing head assembly. During crimping, the concentric needle is placed sequentially on the positioning assembly and the support, the pneumatic switch button is pressed, the pressing head retracts, and then the crimped concentric needle is removed. An air source is connected to the cylinder assembly through the inlet on the base assembly to test pressure and adjust various parameters and dimensional requirements. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions in the embodiments of this utility model or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Enlarged view of section A in the middle;

[0016] Figure 3 This is a top view of the overall structure of this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged diagram of section B;

[0018] In the diagram: 1-Switch assembly, 2-Positioning assembly, 3-Pressure head assembly, 4-Bracket, 5-Cylinder assembly, 6-Pipe connector assembly, 7-Solenoid valve assembly, 8-Power supply assembly, 9-Base assembly, 91-Environmentally friendly rubber mat. Detailed Implementation

[0019] To enable those skilled in the art to better understand and implement the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. However, the embodiments described are only for illustration and are not intended to limit the present utility model.

[0020] like Figures 1-4 The concentric needle pneumatic four-jaw crimping tool shown consists of a base assembly 1 and a cylinder assembly 5, a positioning assembly 2, a bracket, a four-head crimping assembly 3, a solenoid valve assembly 7, a pipe connector assembly 6, a switch assembly 1, and a power supply assembly 8 mounted on it.

[0021] An air inlet is provided on one side of the base assembly 9. The base assembly 9 includes a base plate, and four environmentally friendly rubber foot pads 91 are provided around the bottom of the base plate by stainless steel screws.

[0022] The power supply assembly 8 includes a 250V / 6A two-prong flat plug with a tail wire and a solenoid valve controller;

[0023] The switch assembly 1 includes a push button switch base and a self-resetting lockless inching push button switch;

[0024] The pipe fitting assembly 6 includes a PL quick-connect pneumatic pipe fitting, a pneumatic fitting exhaust throttle valve, and a pneumatic hose.

[0025] The solenoid valve assembly 7 includes a two-position five-way solenoid valve, a BSL pagoda pneumatic silencer, a PC quick-connect pneumatic pipe connector, and stainless steel screws.

[0026] The cylinder assembly 5 is a four-jaw cylinder with hard anodizing treatment on the surface and sandblasting hard anodizing treatment on the cylinder body. The pressure head assembly 3 has four pressure heads that are respectively installed on the four jaws of the four-jaw cylinder. The pressure heads in the pressure head assembly 3 are made of hard alloy material 40Cr.

[0027] The base plate is made of 304 stainless steel, which has good biocompatibility, does not rust, has a smooth and beautiful surface, and is 15mm thick, which increases the stability of the tooling during pneumatic operation. The base plate is provided with four environmentally friendly rubber feet 91 fixed by stainless steel screws around its bottom, which are both environmentally friendly and wear-resistant, as well as durable and stable, further increasing the stability of the tooling during pneumatic operation.

[0028] The positioning component 2 and the bracket 4 are connected by stainless steel screws and maintain coaxiality. Both the bracket 4 and the positioning component 2 are made of POM material.

[0029] Example: During installation, first install four environmentally friendly rubber mats at the four corners of the base plate, then install the cylinder assembly in the corresponding mounting holes of the base plate. Install the positioning assembly and bracket assembly with stainless steel screws, ensuring the coaxiality of the center holes, and then install them onto the cylinder assembly, again ensuring the coaxiality of the center holes, and then tighten the stainless steel screws. Install the four pressure head assemblies on the corresponding four claws of the cylinder assembly, and fine-tune the required dimensional distance of 0.5mm after the pressure heads are closed (after the four pressure heads are adjusted to be consistent), and then tighten the stainless steel screws.

[0030] Install the solenoid valve assembly, pipe fitting assembly, switch assembly, and power supply assembly. After checking that each assembly is installed correctly, place the concentric pin into the positioning assembly and bracket. Finally, connect the external air source and test the pressure. The four claws of the cylinder in the cylinder assembly drive the four pressure heads in the pressure head assembly, simultaneously pressing the outer circumference of the copper plug of the concentric pin to complete the crimping work.

[0031] Based on the test results of the concentric needle assembly, fine-tune the pressure head assembly and parameters such as gas pressure and speed until the concentric needle crimping quality is qualified. At this point, the concentric needle pneumatic four-jaw crimping fixture has completed the crimping and passed the inspection.

[0032] All content not described in detail in this utility model is prior art.

[0033] The above description is merely a preferred embodiment of this utility model and is not limited to the description in the specification and embodiments. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the claims of this utility model should be included within the scope of this utility model patent application.

Claims

1. A same core needle pneumatic four-jaw crimping tool, comprising a base assembly (9), a pneumatic cylinder assembly (5), a solenoid valve assembly (7), a pipe joint assembly (6), characterized in that: The base assembly (9) has an air inlet on one side. The base assembly (9) includes a base plate. A cylinder assembly (5) is provided at the lower middle position of the upper surface of the base plate. A bracket (4) is provided at the center of the cylinder assembly (5). The bracket (4) is connected to the positioning assembly (2). A pressure head assembly (3) is installed on the cylinder assembly (5). The solenoid valve assembly (7) is installed on the base plate and connected to the pipe connector assembly (6). The pipe connector assembly (6) is connected to the cylinder assembly (5).

2. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The base plate is also equipped with a switch assembly (1) and a power supply assembly (8). The power supply assembly (8) includes a 250V / 6A two-prong flat plug with a tail wire and a solenoid valve controller. The switch assembly (1) includes a push-button switch base and a self-resetting, lock-free inching push-button switch.

3. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The pipe fitting assembly (6) includes a PL quick-connect pneumatic pipe fitting, a pneumatic fitting exhaust throttle valve, and a pneumatic hose.

4. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The solenoid valve assembly (7) includes a two-position five-way solenoid valve, a BSL pagoda pneumatic silencer, a PC quick-connect pneumatic pipe connector, and screws.

5. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The cylinder assembly (5) is a four-jaw cylinder, and the pressure head assembly (3) has four jaws respectively installed on the four jaws of the four-jaw cylinder. The pressure head in the pressure head assembly is made of hard alloy material 40Cr.

6. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The base plate is provided with four environmentally friendly rubber feet (91) fixed by stainless steel screws around its lower perimeter. The base plate is made of 304 stainless steel.

7. The pneumatic four-jaw crimping fixture for concentric needles according to claim 1, characterized in that: The positioning component (2) and the bracket (4) are connected by stainless steel screws and maintain coaxiality. Both the bracket (4) and the positioning component (2) are made of POM material.

Images