Clamping tool for filter testing

By designing a filter testing clamping fixture with a feeding mechanism and a clamping mechanism, automatic feeding and clamping are achieved using a movable spring and a rotating motor. This solves the problem of time-consuming filter replacement during filter testing and improves testing efficiency and effectiveness.

CN224383308UActive Publication Date: 2026-06-19SHANGHAI TIANXIN NANOTECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI TIANXIN NANOTECHNOLOGY CO LTD
Filing Date
2025-06-13
Publication Date
2026-06-19

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    Figure CN224383308U_ABST
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Abstract

The utility model discloses a clamping tool for filter test, including material placing mechanism, material placing mechanism includes material placing seat, the middle part of material placing seat upper end is equipped with material placing mouth, and the bottom end corner symmetry of material placing mouth inner wall is fixed with movable spring, a plurality of movable spring's upper end is fixed with material placing board, and the upper end of material placing board is stacked with a plurality of filters to be tested, clamping mechanism, clamping mechanism includes the clamping block of symmetrical arrangement in material placing seat top two sides, clamping mechanism still includes rotating motor, the output of rotating motor is fixed with ball screw, and the thread opposite sides of ball screw surface sets up, and is equipped with movable head in screw, a group movable head's lower surface with clamping block's upper end is fixed, the utility model discloses the initiative feeding, saves time, is helpful to the promotion use effect and efficiency, and simple structure, convenient to use.
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Description

Technical Field

[0001] This utility model relates to the field of clamping fixtures for filter testing, specifically to clamping fixtures applied to filter testing. Background Technology

[0002] A filter testing fixture is a specialized tooling device used in filter performance testing to stably clamp and position filter components or modules, and to assist in completing electrical connections. Its core function is to ensure the filter maintains a fixed posture during testing, facilitating accurate connection to the test circuit, while simultaneously ensuring the safety, reliability, and convenience of the testing process.

[0003] Currently, the clamping fixtures used for filter testing require unloading a filter after it has been clamped and tested, and then transferring it to a new filter to be tested and clamping it again. This process is time-consuming and affects the actual use effect and efficiency. Therefore, there is a need to provide a clamping fixture that can solve the above-mentioned drawbacks and improve the efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a clamping fixture for filter testing, thereby solving the problems mentioned in the background section. To solve these technical problems, this invention is achieved through the following technical solution:

[0005] This utility model is a clamping fixture used for filter testing, comprising:

[0006] The material placement mechanism includes a material placement seat, a material placement port is provided in the middle of the upper end of the material placement seat, and movable springs are symmetrically fixed at the bottom corners of the inner wall of the material placement port. Material placement plates are fixed at the upper ends of multiple movable springs, and multiple filters to be tested are stacked on the upper ends of the material placement plates.

[0007] The clamping mechanism includes clamping blocks symmetrically arranged on both sides above the material placement seat.

[0008] Furthermore, it also includes an installation mechanism, which includes symmetrically arranged installation plates. A positioning hole block is fixed on the inner side of the bottom end of the installation plate, and a positioning bolt passes through the middle of the positioning hole block and extends threadedly into the material placement seat.

[0009] Furthermore, the clamping mechanism also includes a rotary motor, the output end of which is fixed with a ball screw, and the threads on both sides of the ball screw surface are arranged in opposite directions, and a movable head is provided by the thread, the lower surface of a set of movable heads being fixed to the upper end of the clamping block.

[0010] Furthermore, a fixing ring is fixed to the inner side of the outer surface of the rotating motor, and fixing bolts are equidistantly inserted through the middle of the fixing ring.

[0011] Furthermore, a bearing seat is fixed to the upper outer side of one of the mounting plates, and the middle part of the bearing seat is fitted with one end of the ball screw and extends outward.

[0012] Furthermore, the clamping mechanism also includes a bracket fixedly connected to the upper part of the back of the material placement seat. A proximity switch passes through one side of the top of the bracket, and the output end of the proximity switch is provided with a wire and electrically connected to the input end of the rotating motor.

[0013] Furthermore, it also includes a limiting mechanism, which includes symmetrically fixed perforated posts at the upper front and rear ends of the clamping block, with a sleeve post fitted in the middle of the perforated post, and a limiting post fixed at one end of the sleeve post, with the limiting posts abutting against each other.

[0014] This utility model has the following beneficial effects:

[0015] This utility model features a material inlet at the upper center of the material inlet, which has a certain depth to accommodate multiple filters to be tested. The filter to be tested is supported by a material inlet plate, and a movable spring is fixed at the bottom corner of the material inlet plate. Under the action of gravity, after the uppermost filter to be tested is unloaded, the movable spring, after releasing a certain load, recovers a small deformation and can move upwards in conjunction with another filter to be tested to move out of the material inlet, realizing active feeding, saving time, and helping to improve the effect and efficiency of use. Moreover, the structure is simple and easy to use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is the left view of the present invention;

[0018] Figure 2 This is a right view of the present invention;

[0019] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the material feeding mechanism of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 11. Material holder; 12. Material inlet; 13. Movable spring; 14. Material plate; 21. Mounting plate; 22. Positioning hole block; 23. Positioning bolt; 31. Rotating motor; 32. Fixing ring; 33. Ball screw; 34. Shaft seat; 35. Moving head; 36. Clamping block; 37. Bracket; 38. Proximity switch; 39. Wire; 41. Hole post; 42. Sleeve post; 43. Limiting post. Detailed Implementation

[0023] 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.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-4 As shown, this utility model is a clamping fixture used for filter testing, comprising:

[0026] The feeding mechanism includes a feeding seat 11, a feeding port 12 is provided in the middle of the upper end of the feeding seat 11, and movable springs 13 are symmetrically fixed at the bottom corners of the inner wall of the feeding port 12. A feeding plate 14 is fixed at the upper end of multiple movable springs 13, and multiple filters to be tested are stacked on the upper end of the feeding plate 14.

[0027] The material placement base 11 provides an installation environment and provides multiple material placement spaces for filters to be tested through the material placement port 12. The movable spring 13 is installed on the material placement plate 14 to receive the filters to be tested. With the help of the elastic force of the movable spring 13, the filters to be tested can be moved upward actively as gravity gradually decreases, so as to actively complete the material supply. The structure is simple, saves time, and helps to improve the effect and efficiency of the operation.

[0028] Working principle: When testing the filter, multiple filters to be tested are placed on the upper part of the material plate 14. As the gravity increases, multiple movable springs 13 are compressed, causing the material plate 14 to move down into the material inlet 12. The filter to be tested at the top is outside the material inlet 12. After the filter at the top is tested and unloaded, the movable springs 13, after the gravity decreases, return to their original shape, allowing another filter to move up and out of the material inlet 12 for subsequent testing.

[0029] This solution enables active feeding, saving time and improving performance and efficiency. It also features a simple structure and is easy to use.

[0030] Please see Figure 1-4 As shown, this embodiment is based on the above embodiment:

[0031] It also includes an installation mechanism, which includes symmetrically arranged installation plates 21. A positioning hole block 22 is fixed on the inner side of the bottom end of the installation plate 21, and a positioning bolt 23 passes through the middle of the positioning hole block 22 and extends threadedly into the material placement seat 11.

[0032] Mounting plate 21 is used to mount and fix rotating motor 31 and shaft seat 34, while positioning bolt 23, in conjunction with positioning hole block 22, fixes mounting plate 21.

[0033] The clamping mechanism includes clamping blocks 36 symmetrically arranged on both sides above the material placement seat 11;

[0034] The clamping mechanism also includes a rotary motor 31, the output end of which is fixed with a ball screw 33, and the threads on both sides of the surface of the ball screw 33 are arranged in opposite directions, and a movable head 35 is provided in the thread. The lower surface of a set of movable heads 35 is fixed to the upper end of the clamping block 36.

[0035] The rotating motor 31 actuates the ball screw 33, and through the different thread settings at its end, it can link a set of clamping blocks 36 to move inward to act on the end of the filter to be tested, thus completing the test clamping and fixing.

[0036] A fixing ring 32 is fixed to the inner side of the outer surface of the rotating motor 31, and fixing bolts are equidistantly inserted through the middle of the fixing ring 32;

[0037] The fixing bolts and fixing ring 32 are used to install and fix the rotating motor 31.

[0038] A bearing seat 34 is fixed to the upper outer side of a mounting plate 21, and the middle part of the bearing seat 34 is fitted with one end of the ball screw 33 and extends outward.

[0039] While the bearing seat 34 supports the ball screw 33, it can reduce rotational friction.

[0040] The clamping mechanism also includes a bracket 37 fixedly connected to the upper part of the back of the material holder 11. A proximity switch 38 passes through one side of the top of the bracket 37, and the output end of the proximity switch 38 is provided with a wire 39, which is electrically connected to the input end of the rotating motor 31.

[0041] The bracket 37 is equipped with a proximity switch 38, model LJ18A3-8-Z / BX. The proximity switch 38 detects the distance between itself and the filter to be tested after the material inlet 12 is removed. The rotating motor 31 can be actively controlled via the wire 39 to perform the clamping operation without manual intervention, saving time and further improving work efficiency.

[0042] It also includes a limiting mechanism, which includes a hole post 41 symmetrically fixed at the upper front and rear ends of the clamping block 36, a sleeve post 42 sleeved in the middle of the hole post 41, and a limiting post 43 fixed at one end of the sleeve post 42, with a set of limiting posts 43 abutting against each other.

[0043] The hole post 41 is installed and fixed to the limiting post 43 by the sleeve post 42. The abutment between the relative set of limiting posts 43 can avoid excessive clamping force and damage to the filter under test.

[0044] Working principle: During the test clamping and positioning of the filter, after the filter to be tested is placed in the loading port 12, the filter to be tested is detected by the proximity switch 38. Through the wire 39, the controlled rotating motor 31 acts on the ball screw 33, causing a set of movable heads 35 at the end of the ball screw 33 to move inward, thereby linking a set of clamping blocks 36 to act inward on the end of the filter to be tested until the relative set of limiting posts 43 abut against each other. The rotating motor 31 can be braked to complete the clamping and positioning of the filter during the test.

[0045] This solution can actively use the rotating motor 31 to clamp and position the filter under test, reducing manual operation, saving time and effort, and further improving the work effect and efficiency.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A clamping fixture for filter testing, characterized in that, include: The material placement mechanism includes a material placement seat (11), a material placement port (12) is provided in the middle of the upper end of the material placement seat (11), and movable springs (13) are symmetrically fixed at the bottom corners of the inner wall of the material placement port (12). A material placement plate (14) is fixed at the upper end of a plurality of movable springs (13), and a plurality of filters to be tested are stacked on the upper end of the material placement plate (14). The clamping mechanism includes clamping blocks (36) symmetrically arranged on both sides above the material placement seat (11).

2. The clamping fixture for filter testing according to claim 1, characterized in that: It also includes an installation mechanism, which includes symmetrically arranged installation plates (21). The bottom inner side of the installation plate (21) is fixed with a positioning hole block (22), and a positioning bolt (23) passes through the middle of the positioning hole block (22) and extends threadedly into the material placement seat (11).

3. The clamping fixture for filter testing according to claim 1, characterized in that: The clamping mechanism also includes a rotary motor (31), the output end of which is fixed with a ball screw (33), and the threads on both sides of the surface of the ball screw (33) are arranged in opposite directions, and a movable head (35) is provided by the thread. The lower surface of a set of movable heads (35) is fixed to the upper end of the clamping block (36).

4. The clamping fixture for filter testing according to claim 3, characterized in that: A fixing ring (32) is fixed on the inner side of the outer surface of the rotating motor (31), and fixing bolts are equidistantly inserted through the middle of the fixing ring (32).

5. The clamping fixture for filter testing according to claim 2, characterized in that: A bearing seat (34) is fixed to the upper outer side of one of the mounting plates (21), and the middle part of the bearing seat (34) is fitted with one end of the ball screw (33) and extends outward.

6. The clamping fixture for filter testing according to claim 1, characterized in that: The clamping mechanism also includes a bracket (37) fixedly connected to the upper part of the back of the material holder (11). A proximity switch (38) is passed through one side of the top of the bracket (37), and the output end of the proximity switch (38) is provided with a wire (39) and electrically connected to the input end of the rotating motor (31).

7. The clamping fixture for filter testing according to claim 1, characterized in that: It also includes a limiting mechanism, which includes a hole post (41) symmetrically fixed at the upper front and rear ends of the clamping block (36), a sleeve post (42) is sleeved in the middle of the hole post (41), and a limiting post (43) is fixed at one end of the sleeve post (42), and the limiting posts (43) abut against each other.