CN219359245U

CN219359245U - Tensioning and fixing structure

Info

Publication number: CN219359245U
Application number: CN202320127894.5U
Authority: CN
Inventors: 谌建平; 程立; 付凡; 肖震; 邹兵兵; 付志斌
Original assignee: Shenzhen Jamr Technology Co Ltd
Current assignee: Shenzhen Jamr Technology Co Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-07-18
Anticipated expiration: 2033-01-12

Abstract

The utility model discloses a tensioning and fixing structure, which comprises a sliding rail, a jacking cylinder, a jacking wedge block and a roller assembly, wherein the sliding rail is arranged on the jacking cylinder; the sliding rail is provided with a sliding block which can slide relative to the sliding rail; the upper part of the sliding block is connected with a profiling jig; the roller assembly is arranged on the inner side of the sliding block and comprises a rotating shaft and a roller bearing follower, and the rotating shaft is arranged in the roller bearing follower; the jacking cylinder pushes the jacking wedge block to move vertically until the jacking wedge block is abutted against the roller bearing follower, so that the sliding block can be spread in four directions, and the profiling jig is driven to spread in four directions. According to the tensioning and fixing structure, the jacking wedge block is pushed to vertically move through the jacking air cylinder, and the jacking wedge block is abutted to the roller bearing follower, so that the sliding block can be propped open towards four directions, the profiling jig is driven to prop open towards four directions, a product can be tensioned better, and the clamping device for testing or processing the product is high in automation degree, compact in structure and stable.

Description

Tensioning and fixing structure

Technical Field

The utility model relates to the field of tensioning and fixing, in particular to a tensioning and fixing structure.

Background

In the production process, a part of the product needs to be tested. For example, in the production of electronic devices, the components of the electronic devices are usually fixed to the housing of the electronic device by means of heat fusion, ultrasonic welding, gluing, fastening, etc. In order to achieve better effect when the electronic device and the accessory are fixed, clamping devices are often required to clamp and position the electronic device and the accessory.

There are many clamping structures in the prior art, but all need manual centre gripping product, not enough convenient intelligence, and different products can very big error when testing product and processing product, as described in the patent of application number CN202121903517.3, a cell-phone complete machine functional test machine and fixture thereof, including the base, the top of base is provided with fixture, fixture's top is provided with rotary mechanism. The clamping mechanism needs to be manually adjusted through the rotating mechanism when clamping products, is extremely inconvenient to use, brings impurities easily, and reduces the processing quality of the products.

Disclosure of Invention

The utility model aims to provide a tensioning and fixing structure which is a clamping device with high automation degree, compact structure and stability and used for testing or processing products, and aims to solve the technical problem that the tensioning and fixing structure in the prior art is not intelligent and convenient enough.

The utility model adopts the following technical scheme:

a tensioning and fixing structure comprises a sliding rail, a jacking cylinder, a jacking wedge block and a roller assembly;

the sliding rail is provided with a sliding block which can slide relative to the sliding rail;

the upper part of the sliding block is connected with a profiling jig;

the roller assembly is arranged on the inner side of the sliding block and comprises a rotating shaft and a roller bearing follower, and the rotating shaft is arranged in the roller bearing follower;

the jacking cylinder pushes the jacking wedge block to move vertically until the jacking wedge block is abutted against the roller bearing follower, so that the sliding block can be spread in four directions, and the profiling jig is driven to spread in four directions.

Further, the device also comprises a guide shaft, and the guide shaft is connected with the sliding block.

Further, a spring is arranged on the guide shaft, and the spring is arranged on the surface of the guide shaft.

Further, the sliding block is fixedly connected with the profiling jig.

Further, the bottom of the jacking cylinder is connected with a circular supporting table.

Further, the outer edge of the sliding block is connected with a baffle through a guide shaft, and the baffle is fixedly connected with the sliding rail.

Further, the profiling jig is provided with a plurality of oval through holes with the same size.

Further, the profiling jig is provided with a plurality of elliptical grooves with the same size, and circular through holes are formed in the elliptical grooves.

The beneficial effects are that:

according to the tensioning and fixing structure provided by the utility model, the jacking wedge block is pushed to vertically move by the jacking cylinder until the jacking wedge block is abutted against the roller bearing follower, so that the sliding block can be propped open in four directions, the profiling jig is driven to prop open in four directions, a product can be tensioned better, and the clamping device for testing or processing the product is high in automation degree, compact in structure and stable.

Drawings

FIG. 1 is a schematic view of the whole structure of an embodiment of the tensioning and fixing structure of the present utility model;

FIG. 2 is a schematic diagram of a profiling fixture with a tensioning and fixing structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an embodiment of the inside of the tensioning and fixing structure of the present utility model.

Fig. 4 is a schematic structural view of an embodiment of a side of the tension fixing structure of the present utility model.

Wherein: 1. jacking the air cylinder; 2. jacking the wedge block; 3. a slide block; 4. profiling jig; 5. a baffle; 6. a guide shaft; 7. a spring; 8. a slide rail; 9. a circular support table; 10. a roller bearing follower; 11. a rotating shaft; 12. an elliptical through hole; 13. an oval groove.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 and 3, the utility model provides a tensioning and fixing structure, which comprises a sliding rail 8, a jacking cylinder 1, a jacking wedge block 2 and a roller assembly; the sliding rail 8 is provided with a sliding block 3 which can slide relative to the sliding rail 8; the upper part of the sliding block 3 is connected with a profiling jig 4; the roller assembly is arranged on the inner side of the sliding block 3 and comprises a rotating shaft 11 and a roller bearing follower 10, wherein the rotating shaft 11 is arranged in the roller bearing follower 10; the jacking cylinder 1 pushes the jacking wedge block 2 to move vertically until the jacking wedge block 2 is abutted against the roller bearing follower 10, so that the sliding block 3 can be spread in four directions, and the profiling jig 4 is driven to spread in four directions. The roller is arranged in the roller bearing follower 10, so that sliding friction between the roller bearing follower 10 and the sliding block 3 is changed into rolling friction, friction loss is reduced, acting force can be diffused to the periphery when the sliding block 3 is driven to be spread to the periphery, and the stability of the sliding block 3 in the horizontal and vertical directions is ensured.

In the above embodiment, the jacking cylinder 1 is a metal part for guiding the jacking wedge block 2 to perform linear reciprocating motion, air converts heat energy into mechanical energy through expansion in the sliding block 3, the jacking wedge block 2 is abutted against the roller bearing follower 10, the rotating shaft 11 in the roller bearing follower 10 drives the roller bearing follower 10 to push the sliding block 3, so that the sliding block 3 can be stretched in four directions, and the sliding block 3 is fixedly connected with the profiling jig 4, so that the profiling jig 4 can be driven, and an automatic tensioning function is realized. If the cylinder diameter of the jacking cylinder 1 is selected to be small, the output force is insufficient, the air jacking cylinder cannot work normally, but the cylinder diameter is too large, so that equipment is heavy and high in cost, and meanwhile, the air consumption is increased, and energy waste is caused. Therefore, in the design of the clamp, a force increasing mechanism is adopted to reduce the size of the jacking cylinder 1.

When the device is used in working, a product to be processed or tested is placed on the profiling jig 4, the jacking wedge block 2 is pushed to move upwards through the jacking cylinder 1, when the jacking wedge block 2 is lifted to a set height, the jacking wedge block is abutted to the roller bearing follower 10, the roller bearing follower 10 drives the peripheral sliding blocks 3 to move outwards through the rotating shaft 11 inside, so that the profiling jig 4 is driven to move outwards, the product to be tested or processed is clamped, the profiling jig 4 is supported to be large, the shell can be clamped from the inside of the product, the phenomenon that the product is difficult to swing left and right during clamping can be guaranteed, the operation is stable, the clamping is firm, and the spring 7 can prevent the impact force of the roller bearing follower 10 and the sliding blocks 3 in contact with each other to be overlarge, so that the protection effect is achieved.

In an embodiment, the device further comprises a guide shaft 6, and the guide shaft 6 is connected with the sliding block 3.

In the above embodiment, the guide shaft 6 is used in combination with the spring 7 for guiding; the guide shaft 6 is a linear motion system for linear travel in cooperation with the slider 3. Since the sliding block 3 is in contact with the guide shaft 6, when the roller bearing follower 10 drives the sliding block 3 to roll, the guide shaft 6 can well control the direction, so that the guide shaft 6 has small friction and is relatively stable, and stable horizontal linear motion with high sensitivity and high precision can be obtained. The guide shaft 6 is also used for bearing a certain load, and can be used for high-speed, long-distance and heavy-load high-frequency motion in the horizontal direction.

In one embodiment, a spring 7 is disposed on the guide shaft 6, and the spring 7 is disposed on the surface of the guide shaft 6.

In the above embodiment, the spring 7 is used in combination with the guide shaft 6, the driving end connection of the guide shaft 6 is tightly matched and is not easy to loose, the driven end connection is often loose matched, and the driven end connection is easy to disengage after operation, so that the efficiency of transmitting torque by the guide shaft 6 is reduced. The spring 7 is arranged on the guide shaft 6, so that the combined part is not retracted in the working state, the matching length is kept unchanged, the transmission stability is improved, the excessive impact force at the moment of contact between the roller bearing follower 10 and the sliding block 3 can be prevented, and the protection effect is realized. Preferably, the spring 7 is a compression spring, the compression spring is a spiral spring bearing axial pressure, a certain gap is formed between rings of the compression spring, and the spring 7 contracts and deforms when being subjected to external load, so as to store deformation energy. When receiving the compressive force from the horizontal movement of the slider 3, the compression spring 7 contracts and deforms, stores deformation energy, and when the external load is removed, the deformation disappears and returns to the original shape, and the slider 3 is better moved horizontally in combination with the guide shaft 6.

In an embodiment, referring to fig. 4, the slider 3 is fixedly connected to the profiling fixture 4.

In the above embodiment, the jacking cylinder 1 is a metal part for guiding the jacking wedge block 2 to perform linear reciprocating motion, air converts heat energy into mechanical energy through expansion in the sliding block 3, the jacking wedge block 2 is abutted against the roller bearing follower 10, the roller bearing follower 10 drives the peripheral sliding block 3 to move outwards through the internal rotating shaft 11, so as to drive the profiling fixture 4 to move outwards, the product to be tested or processed is clamped, the profiling fixture 4 is enlarged, the shell can be clamped from the inside of the product, and the difficulty in left-right swing, stable operation and firm clamping during clamping of the product can be ensured.

In one embodiment, the bottom of the jacking cylinder 1 is connected with a circular supporting table 9.

In the above embodiment, for the support of the jacking cylinder 1, the round shape is more material-saving than the square shape, the template of the round support table 9 is used less, the square support table can be seen everywhere to give people a very common feeling visually, and the round support table 9 can give people a fresh feeling visually due to scarcity, so the round support table 9 is more beautiful compared with the square or other shape support table, and the round support table 9 has better stability.

In an embodiment, the outer edge of the sliding block 3 is connected with a baffle plate 5 through a guide shaft 6, and the baffle plate 5 is fixedly connected with the sliding rail 8.

In the above embodiment, the baffle 5 can play a role in preventing dust or other foreign matters from entering, and the baffle 5 is connected with the slider 3 through the guide shaft 6, so that when the slider 3 moves, one end of the guide shaft 6 is fixed, and a good limiting effect is achieved. Baffle 5 and slide rail 8 fixed connection make slide rail 8 more stably support slider 3 remove, and leave the gap between baffle 5 and the slide rail 8, and the convenience is when slider 3 removes, because leave the gap and can let slider 3 remove better, and the air current flows out in the gap between baffle 5 and the slide rail 8, guarantees slider 3 and keeps stability along with slide rail 8 removes, has simple structure simultaneously, levels pleasing to the eye characteristics.

In an embodiment, referring to fig. 2, the profiling fixture 4 is provided with a plurality of oval through holes with the same size, the profiling fixture 4 is provided with a plurality of oval grooves with the same size, and circular through holes are arranged in the oval grooves.

In the above-mentioned embodiment, the setting of through-hole can balance the pressure when profiling tool 4 is put to the product, if profiling tool 4 that does not have the through-hole, can receive the resistance of atmospheric pressure, when being provided with the through-hole, atmospheric pressure can be discharged from the through-hole, stabilizes the product better to more stable centre gripping product, and this application profiling tool 4 goes up through-hole and recess symmetry setting respectively, more pleasing to the eye when saving material.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.

Claims

1. The tensioning and fixing structure is characterized by comprising a sliding rail, a jacking cylinder, a jacking wedge block and a roller assembly;

the upper part of the sliding block is connected with a profiling jig;

2. The tension fixing structure according to claim 1, further comprising a guide shaft connected to the slider.

3. The tension fixing structure according to claim 2, wherein a spring is provided on the guide shaft, the spring being provided on a surface of the guide shaft.

4. The tensioning and securing structure of claim 1, wherein the slider is fixedly connected to the profiling jig.

5. The tension fixing structure as claimed in claim 1, wherein the jacking cylinder bottom is connected to a circular support table.

6. The tensioning and fixing structure according to claim 1, wherein a baffle is arranged on the outer edge of the sliding block in a connecting mode through a guide shaft, and the baffle is fixedly connected with the sliding rail.

7. The tensioning and fixing structure according to claim 1, wherein the profiling jig is provided with a plurality of oval through holes with the same size.

8. The tensioning and fixing structure according to claim 1, wherein the profiling jig is provided with a plurality of elliptical grooves with the same size, and circular through holes are arranged in the elliptical grooves.