Machining and clamping jig for handle plastic part of endoscope minimally invasive instrument

Abstract

The utility model discloses an endoscope minimally invasive instrument handle plastic part machining and clamping jig, and belongs to the technical field of clamping jigs. The mounting platform is provided with an opening; the clamping part is arranged on one side of the opening of the mounting platform; the driving assembly comprises connecting plates, the connecting plates are arranged in pairs and fixed to the mounting platform, and a containing cavity is formed between the connecting plates; the output end of the air cylinder is arranged in the accommodating cavity; the first push rod is fixedly connected with the output end of the air cylinder; the first sliding block is fixedly connected with the first push rod; the second push rod is fixedly connected with the first push rod; the spring is arranged on the second push rod in a sleeving mode. In the implementation process of the clamping device, the air cylinder and the corresponding push rod are arranged, the clamping area is adjusted through the spring, when workpieces of different sizes are clamped, stretching and retracting of the air cylinder do not need to be adjusted frequently, and the machining efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of clamping fixture technology, specifically to a clamping fixture for processing plastic parts of endoscopic minimally invasive instrument handles. Background Technology

[0002] Endoscopic minimally invasive instruments are a common medical device widely used in clinical surgery. They typically have a handle for operating the instrument.

[0003] In the production process of endoscopic minimally invasive instruments, the handle plastic part is generally produced separately and then assembled with the instrument body. In order to ensure assembly accuracy, the handle plastic part needs to be precisely positioned and fixed to ensure that it does not shift during processing. Therefore, processing clamping fixtures are needed to fix the handle plastic part, thereby improving production efficiency and assembly accuracy, reducing errors, and ensuring that the medical device meets the medical use requirements. In the existing technology, specific clamping equipment is usually used to achieve this, such as using C-clamps or V-blocks to hold the handle plastic part in a specific position and fix it by mechanical force to complete the assembly.

[0004] However, due to the special nature of medical devices, the requirements for the precision and stability of clamping fixtures are extremely high. Existing fixtures usually use cylinders as the clamping force source during the clamping process. During the clamping process, the extension and retraction of the cylinders need to be frequently adjusted according to the size of the handle plastic parts. This process not only affects the processing efficiency, but also affects the life of the cylinders.

[0005] Therefore, it is necessary to provide a fixture for machining and clamping the plastic handle of a minimally invasive endoscopic instrument to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a clamping fixture for processing plastic parts of endoscopic minimally invasive instrument handles, which divides the clamping stage into a pre-clamping stage and a formal clamping stage, eliminating the need for frequent cylinder adjustments, thereby improving processing efficiency and extending cylinder lifespan.

[0008] The technical solution adopted by this application to solve its technical problem is: a fixture for processing and clamping plastic parts of endoscopic minimally invasive instrument handles, comprising:

[0009] Fixed base;

[0010] The mounting platform is fixedly connected to the mounting base, and the mounting platform has an opening;

[0011] A clamping part is provided on one side of the opening of the mounting platform;

[0012] A drive component, wherein the drive component is disposed on the other side of the mounting platform;

[0013] The driving component includes:

[0014] Connecting plates, which are arranged in pairs and fixed to the mounting platform, and have a receiving cavity between the connecting plates;

[0015] A cylinder, wherein the output end of the cylinder is disposed within a receiving cavity;

[0016] The first push rod is fixedly connected to the output end of the cylinder;

[0017] A first slider, which is fixedly connected to a first push rod;

[0018] The second push rod is fixedly connected to the first push rod;

[0019] A spring is sleeved on the second push rod and is used to apply elastic force to the clamping part to change the size of the clamping area.

[0020] In the implementation of this application, by setting up a cylinder and a corresponding push rod, and by using a spring to adjust the clamping area, when clamping workpieces of different sizes, it is not necessary to frequently adjust the extension and retraction of the cylinder, thereby improving processing efficiency.

[0021] Furthermore, the clamping part includes a movable clamping block, which is sleeved on the second push rod. The clamping part also includes a pair of fixed clamping blocks, which are symmetrically arranged on both sides of the clamping part and cooperate with the movable clamping block to form a clamping area.

[0022] Furthermore, buffer pads are provided on the sides of the movable clamping block and the fixed clamping block that are close to each other.

[0023] Furthermore, the buffer pad is made of a flexible material, namely rubber.

[0024] Furthermore, the mounting platform is provided with a boss, which is fixedly connected to the mounting platform. The boss is provided with a guide hole, and the second push rod is slidably connected to the boss through the guide hole.

[0025] Furthermore, a fixing bolt is provided on the side of the connecting plate. The fixing bolt passes through the connecting plate and has threads on its side. A corresponding screw hole is provided on the connecting plate. At the same time, a waist groove is provided on the side of the first slider, and the threaded part of the fixing bolt is embedded in the waist groove.

[0026] The beneficial effects of this application are as follows: The endoscopic minimally invasive instrument handle plastic part processing clamping fixture provided by this application is equipped with a cylinder and a corresponding push rod, and the clamping area is adjusted by a spring. When clamping workpieces of different sizes, there is no need to frequently adjust the extension and retraction of the cylinder, which improves processing efficiency. The cylinder extension is fixed by the cooperation of the fixing bolt and the waist groove, which prevents the gap after long-term use from affecting the clamping effect.

[0027] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0029] In the attached diagram:

[0030] Figure 1 This is an overall schematic diagram of a plastic handle processing and clamping fixture for a minimally invasive endoscopic instrument according to this application;

[0031] Figure 2 This is an enlarged internal schematic diagram of a plastic handle processing and clamping fixture for a minimally invasive endoscopic instrument according to this application;

[0032] The following are the labeling elements in the figure:

[0033] 1. Fixed base; 2. Mounting platform; 3. Clamping part; 4. Drive assembly; 31. Moving clamping block; 32. Fixed clamping block; 33. Buffer pad; 41. Connecting plate; 42. Cylinder; 43. First push rod; 44. First slider; 45. Second push rod; 46. Boss; 47. Fixing bolt; 48. Waist groove; 49. Spring. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0036] Example 1: As Figure 1 As shown, this application provides a clamping fixture for processing plastic handles of endoscopic minimally invasive instruments, used for clamping during the processing of plastic handles of endoscopic minimally invasive instruments, thereby satisfying the assembly between different parts. The clamping fixture includes a fixed base 1, on which a mounting platform 2 is provided. The mounting platform 2 is fixedly connected to the fixed base 1. The mounting platform 2 is C-shaped, and the side of the mounting platform with an opening constitutes a clamping part 3. The clamping part 3 is used to clamp the handle device to be processed.

[0037] On the other side of the mounting platform 2, a drive assembly 4 is provided. The drive assembly 4 includes a pair of connecting plates 41 with a receiving cavity between them. A cylinder 42 is provided in the receiving cavity. The cylinder 42 is connected to a control mechanism (not shown in the figure). The extension and retraction of the cylinder 42 are controlled by the control mechanism.

[0038] like Figure 2 As shown, a first push rod 43 is fixedly connected to the output end of the cylinder 42. A first slider 44 is fixedly connected to the end of the first push rod 43 away from the cylinder 42. A pair of second push rods 45 are provided at the other end of the first slider 44. Under the push of the cylinder 42, the first push rod 43 drives the first slider 44 to move, thereby driving the second push rods 45 to extend and retract synchronously.

[0039] like Figures 1-2 As shown, a boss 46 is provided on the mounting platform 2. The boss 46 is fixedly connected to the mounting platform 2. A guide hole (not shown in the figure) is provided on the boss 46. The second push rod 45 is slidably connected to the boss 46 through the guide hole. A movable clamping block 31 is fixedly provided at the end of the second push rod 45. The movable clamping block 31 is part of the clamping part 3. Under the drive of the motor 2, the movable clamping block 31 moves along the opening direction of the guide hole, thereby changing the size of the clamping area.

[0040] like Figure 1 As shown, the clamping part 3 also includes a pair of fixed clamping blocks 32. The fixed clamping blocks 32 are symmetrically arranged on both sides of the clamping part 3 and cooperate with the movable clamping block 31 to form a stable triangular clamping structure. When the handle plastic part needs to be processed, it is placed in the clamping part 3, and the movable clamping block 31 is moved by the drive component 4 to make the handle plastic part firmly clamped and ensure processing accuracy.

[0041] like Figure 1 As shown, in order to achieve flexible clamping and prevent the plastic handle from deforming due to uneven force during processing, buffer pads 33 are provided on the sides of the movable clamping block 31 and the fixed clamping block 32 that are close to each other. The buffer pads 33 are made of flexible materials, such as silicone or rubber, which can effectively disperse the clamping force and protect the surface of the plastic handle from damage.

[0042] Example 2: In Example 1, the movement of the moving clamping block 31 is controlled by the cylinder 42 as the driving source to adjust the clamping area, thereby enabling the clamping of handle plastic parts of different sizes. However, this method still has some drawbacks. For example, after long-term use, the cylinder 42 is prone to wear, affecting the clamping stability. Furthermore, the response speed of the cylinder 42 is slow, and the adjustment accuracy is limited. Therefore, in this example, the following improvements are made:

[0043] like Figures 1-2 As shown, a fixing bolt 47 is provided on the side of the connecting plate 41. The fixing bolt 47 passes through the connecting plate 41 and has threads on its side. The connecting plate 41 is provided with corresponding screw holes. By rotating the fixing bolt 47, the screwing depth of the fixing bolt 47 can be adjusted. At the same time, a waist groove 48 is provided on the side of the first slider 44. The threaded part of the fixing bolt 47 is embedded in the waist groove 48. By rotating the fixing bolt 47, its end face is pressed tightly against the bottom surface of the waist groove 48, thereby fixing the first slider 44 and preventing the cylinder 42 output end from developing a gap after long-term use, which would lead to unstable clamping force.

[0044] like Figure 2 As shown, the movable clamping block 31 is no longer directly fixed to the second push rod 45, but is sleeved on the second push rod 45, so that the movable clamping block 31 can move towards or away from the second push rod 45, thereby changing the size of the clamping area. A spring 49 is sleeved on the second push rod 45. The two ends of the spring 49 are respectively connected to the end face of the boss 46 and the end face of the movable clamping block 31. During the clamping process, the spring 49 can provide elastic force, thereby pressing the movable clamping block 31 tightly against the handle plastic part to be processed, thereby effectively improving the clamping stability.

[0045] It should be noted that in this embodiment, the clamping stage is divided into two processes. The first is the pre-clamping stage, in which the cylinder 42 pushes the movable clamping block 31 to move initially, thereby initially positioning the handle plastic part. Then, the formal clamping stage is entered. The first slider 44 is stopped by rotating the fixing bolt 47, and the gap of the cylinder 42 after long-term use is prevented from causing changes in clamping force. The movable clamping block 31 is moved towards the second push rod 45, which compresses the spring 49, thereby generating elastic force. The handle plastic part is placed into the clamping area. Under the action of the elastic force, the movable clamping block 31 will cooperate with the fixed clamping block 32 to achieve uniform clamping force, ensuring that the handle plastic part is stable and without displacement during processing. At the same time, there is no need to frequently adjust the cylinder 42, thus extending the service life of the equipment.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fixture for processing and clamping plastic parts for endoscopic minimally invasive instrument handles, characterized in that: include: Fixed base (1); The mounting platform (2) is fixedly connected to the fixing base (1) and has an opening; A clamping part (3) is provided on one side of the opening of the mounting platform (2); A drive component (4) is disposed on the other side of the mounting platform (2); The driving component (4) includes: Connecting plates (41) are arranged in pairs and fixed to the mounting platform (2), and there is a receiving cavity between the connecting plates (41); Cylinder (42), the output end of which is disposed in the receiving cavity; The first push rod (43) is fixedly connected to the output end of the cylinder (42); The first slider (44) is fixedly connected to the first push rod (43); The second push rod (45) is fixedly connected to the first push rod (43); A spring (49) is sleeved on the second push rod (45). The spring (49) is used to apply elastic force to the clamping part (3) to change the size of the clamping area.

2. The endoscope minimally invasive instrument handle plastic part machining clamping jig according to claim 1, characterized in that: The clamping part (3) includes a movable clamping block (31), which is sleeved on the second push rod (45). The clamping part (3) also includes a pair of fixed clamping blocks (32), which are symmetrically arranged on both sides of the clamping part (3) and cooperate with the movable clamping block (31) to form a clamping area.

3. The endoscope minimally invasive instrument handle plastic part machining clamping jig of claim 2, characterized in that: Both the movable clamping block (31) and the fixed clamping block (32) are provided with buffer pads (33) on the side that are close to each other.

4. The endoscope minimally invasive instrument handle plastic part machining clamping jig according to claim 3, characterized in that: The buffer pad (33) is made of a flexible material, namely rubber.

5. The endoscope minimally invasive instrument handle plastic part machining clamping jig of claim 1, wherein: The mounting platform (2) is provided with a boss (46), which is fixedly connected to the mounting platform (2). The boss (46) is provided with a guide hole, and the second push rod (45) is slidably connected to the boss (46) through the guide hole.

6. The endoscope minimally invasive instrument handle plastic part machining clamping jig of claim 1, wherein: The side of the connecting plate (41) is provided with a fixing bolt (47), which passes through the connecting plate (41) and has threads on its side. The connecting plate (41) is provided with corresponding screw holes. Meanwhile, the side of the first slider (44) is provided with a waist groove (48), and the threaded part of the fixing bolt (47) is embedded in the waist groove (48).

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