Elastic force test fixture matched with welding fixture

Abstract

An elastic force test fixture matched with a welding fixture comprises a test main body (1), a test cover (2), a test pressure head (3) and a dynamometer, the test main body (1) is hollow, the top and the bottom of the test main body (1) are open, the test pressure head (3) is arranged in the test main body (1) and points to the bottom opening of the test main body (1) to be used for pressing a product, and the dynamometer is arranged on the test cover (2). The test cover (2) is inserted into the top opening of the test main body (1) and is detachably connected with the test main body (1), and the dynamometer is clamped between the test cover (2) and the test pressure head (3). The test device not only can completely reproduce the true force value borne by a product during welding, but also can greatly save time, and the test efficiency is improved. A large amount of manpower and material resources are saved, the time cost is reduced, abnormal springs can be conveniently and regularly detected, more defective products caused by the fact that the abnormal springs are not detected in time are avoided, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of glass welding testing, in particular to an elastic force testing fixture matched with a welding fixture. Background Art

[0002] Camera products include glass and metal frames. When welding, welding fixtures are used to assemble a large number of products at one time. After welding, the products are introduced into another transfer plate. The welding fixture includes multiple positioning holes, and spring blocks are arranged in the positioning holes. The bottom of the spring blocks provides elastic force through springs. Generally, springs with corresponding elastic force are purchased according to the required elastic force, and the welding fixture will be recycled inside the machine, so the elastic force required for the normal production process cannot be guaranteed in the long run. The existing elastic force testing scheme can only be to dismantle the entire welding fixture and send it to the laboratory for elastic force testing of the spring block every time the welding fixture is installed or after installation. It takes a lot of time to calibrate and debug each time it is dismantled and reinstalled, which greatly wastes time, affects production efficiency, and delays the delivery cycle. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an elastic force testing fixture matched with a welding fixture in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing an elastic force test fixture matched with a welding fixture, the welding fixture includes a plurality of positioning holes, elastic blocks and products are embedded in the positioning holes, the bottom of the elastic block is connected to a spring, the top of the elastic block is placed with the product, the product extends from the positioning hole under the elastic force of the elastic block so as to protrude from the welding fixture, the elastic force test fixture includes a test body, a test cover, a test pressure head and a dynamometer;

[0005] The test body is hollow inside and open at the top and bottom; the test pressure head is arranged inside the test body and points to the bottom opening of the test body for pressing the product; the test cover is inserted into the top opening of the test body and is detachably connected to the test body; the dynamometer is clamped between the test cover and the test pressure head; the outer diameter of the bottom end face of the test body is larger than the radial dimension of the positioning hole so that the test pressure head can contact and limit the welding fixture when pressing the product downward, thereby simulating the magnitude of the force that the product is subjected to during actual production welding.

[0006] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the radial dimension of the bottom opening of the testing body is larger than the radial dimension of the product.

[0007] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the side wall of the test body is provided with a wire groove connecting the internal hollow space of the test body and the external environment, the extension direction of the wire groove is parallel to the axial direction of the test body, and the electronic wire of the dynamometer is led out from the wire groove.

[0008] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the test body includes a cylindrical body open at the top and bottom, the outer diameter of the bottom end face of the cylindrical body is larger than the radial dimension of the positioning hole, and the side wall of the cylindrical body is provided with the wire groove; the inner side wall of the cylindrical body extends inwardly along the radial direction to form an annular flange, and the test pressure head is placed on the annular flange.

[0009] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the test body also includes a plurality of ears connected to the outer side wall of the cylindrical body, the top surface of the ears is flush with the top end surface of the cylindrical body, and the test cover is locked with the ears by a locking piece.

[0010] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the test cover includes a cover plate and a first column connected to the bottom surface of the cover plate, the first column matches the cylindrical body and is sleeved in the cylindrical body, the cover plate covers the top end surface of the cylindrical body and the top surface of the ear, and the cover plate and the ear are locked by a locking piece.

[0011] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the number of the ears is two, and the two ears are arranged opposite to each other with respect to the central axis of the cylindrical body; the wire groove extends upward to pass through the top end surface of the cylindrical body.

[0012] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the test pressure head includes a second cylinder and a third cylinder coaxially connected, the second cylinder matches the cylindrical body and is sleeved in the cylindrical body, the radial dimension of the third cylinder is smaller than the radial dimension of the second cylinder, the radial dimension of the third cylinder is equivalent to the radial dimension of the welding needle, the third cylinder is connected to the bottom end face of the second cylinder, and the bottom end face of the third cylinder is used to press the product.

[0013] Furthermore, in the elastic force testing fixture matched with the welding fixture described in the utility model, the test pressure head is completely accommodated in the test body, and the bottom end surface of the third column is flush with or higher than the bottom end surface of the test body.

[0014] The elastic force testing fixture matched with the welding fixture of the utility model has the following beneficial effects: the dynamometer can be placed in the fixture, the test cover is closed, the bottom of the fixture is aligned with the single product placed on the welding fixture and squeezed downward, when the test pressure head presses the product downward to the limit contact with the welding fixture, the welding fixture is subjected to force, thus simulating the magnitude of the force borne by the product during the actual production welding process, and the corresponding reading of the dynamometer at this time is exactly the force borne by the product during welding, which can reflect the elastic force of the spring. Therefore, the elastic force testing fixture of the utility model can not only completely reproduce the actual force value borne by the product during welding, but also greatly save time, save a lot of manpower and material resources and reduce time costs, and it is more convenient to regularly check for abnormal springs, avoiding the failure to detect abnormal springs in time and causing more defective products, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work:

[0016] Figure 1 It is a structural schematic diagram of the elastic force testing fixture of the utility model matched with the welding fixture;

[0017] Figure 2 It is an exploded view of the elastic force testing fixture of the utility model matched with the welding fixture;

[0018] Figure 3 is a cross-sectional view of the test body. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings below. Typical embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0020] refer to Figure 1-3 The elastic force testing fixture matched with the welding fixture of this embodiment includes a testing body 1, a testing cover 2, a testing pressure head 3 and a force gauge.

[0021] Because the elastic force test fixture of this embodiment needs to cooperate with the welding fixture, the welding fixture is introduced before the fixture of this embodiment. The welding fixture includes a plurality of positioning holes arranged in an array, and a spring block and a product are embedded in the positioning hole. The bottom of the spring block is connected to a spring, and the product is placed on the top of the spring block. Under the elastic force of the spring block, the product extends from the positioning hole and protrudes from the welding fixture. The product specifically includes a metal frame and glass. A frame is placed on the top of the spring block, and the glass is placed on the frame.

[0022] The test body 1 is hollow inside and open at the top and bottom. The test pressure head 3 and the dynamometer are inserted into the test body 1 from the top opening of the test body 1 in sequence. The test pressure head 3 points to the bottom opening of the test body 1 for pressing the product, is inserted into the top opening of the test body 1 and is detachably connected to the test body 1, and the dynamometer is clamped between the test cover 2 and the test pressure head 3. The outer diameter of the bottom end face of the test body 1 is larger than the radial dimension of the positioning hole, so that when the test pressure head 3 presses the product downward, it contacts and limits the welding fixture, thereby simulating the magnitude of the force that the product is subjected to during actual production welding.

[0023] More specifically, the test body 1 includes a cylindrical body 11 that is open at the top and bottom, and the outer diameter of the bottom end face of the cylindrical body 11 is larger than the radial dimension of the positioning hole of the welding fixture, so that it can be ensured that the bottom end face of the cylindrical body 11 can contact and limit the welding fixture. The inner side wall of the cylindrical body 11 extends inwardly in the radial direction to form an annular flange 111, and the test ram 3 is placed on the annular flange 111. In this embodiment, the test ram 3 is completely accommodated in the test body 1, and the radial dimension of the bottom opening of the cylindrical body 11 is larger than the radial dimension of the glass, so that the glass can enter from the bottom opening of the cylindrical body 11 and contact the test ram 3.

[0024] Furthermore, the side wall of the cylindrical body 11 is provided with a wire groove 101 connecting the inside of the cylindrical body 11 and the external environment. The function of the wire groove 101 is to lead the electronic wire of the dynamometer to the outside, so there is no theoretical restriction on the shape of the wire groove 101. In this embodiment, in order to directly pass the electronic wire out when installing the dynamometer, the extension direction of the wire groove 101 is parallel to the axial direction of the test body 1, and the wire groove 101 extends upward to the top end surface that passes through the cylindrical body 11. Figure 3 That is, it is a view cut from the position of the wire groove 101.

[0025] In this embodiment, the test cover 2 is detachably connected to the test body 1 by locking with a locking member. Specifically, the test body 1 includes a plurality of ears 12 connected to the outer wall of the cylindrical body 11. In this embodiment, the number of the ears 12 is specifically two, and the two ears 12 are arranged opposite to each other on the left and right sides with respect to the central axis of the cylindrical body 11. The top surface of the ear 12 is flush with the top end surface of the cylindrical body 11, and the test cover 2 is locked with the ear 12 by a locking member such as a pin or a bolt. Specifically, the test cover 2 includes a cover plate 21 and a first column 22 connected to the bottom surface of the cover plate 21, the first column 22 matches the cylindrical body 11 and is sleeved in the cylindrical body 11, the cover plate 21 covers the top end surface of the cylindrical body 11 and the top surface of the ear 12, and the cover plate 21 is locked with the ear 12 by a locking member. In other embodiments, the test cover 2 and the test body 1 can be detachably connected by a threaded connection. For example, an external thread is provided on the outside of the first column 22 of the test cover 2, and a matching internal thread is provided on the inner wall of the cylindrical body 11, and the test cover 2 can be rotated into the cylindrical body 11.

[0026] The test pressure head 3 includes a coaxially connected second cylinder 31 and a third cylinder 32, the second cylinder 31 is placed on the annular flange 111, the second cylinder 31 matches the cylindrical body 11 and is sleeved in the cylindrical body 11, the radial dimension of the third cylinder 32 is much smaller than the radial dimension of the second cylinder 31, and the radial dimension of the third cylinder 32 is equivalent to the radial dimension of the welding needle, the third cylinder 32 is connected to the center of the bottom end face of the second cylinder 31, and the bottom end face of the third cylinder 32 is used to press the product. The bottom end face of the third cylinder 32 can be flush with the bottom end face of the test body 1 or higher than the bottom end face of the test body 1.

[0027] The assembly and testing process of this embodiment is: first insert the third column 32 of the test pressure head 3 downward into the cylindrical body 11, then put the dynamometer into the test body 1, cover it with the test cover 2, fasten the pins, and the entire fixture is assembled. Then align the bottom of the fixture with the single product placed on the welding fixture and squeeze it downward. When the test body 1 is pressed down to the point where it is restricted by the welding fixture and cannot be pressed down further, the welding fixture is under force. At this time, the reading of the dynamometer is exactly the force exerted on the product during welding. This force is positively correlated with the elastic force of the spring in the welding fixture. The greater the elastic force, the greater the reading of the dynamometer. Therefore, by regularly testing and recording the readings of the dynamometer, it is possible to monitor whether the spring is qualified.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element in the middle. The terms "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] Terms including ordinal numbers such as "first" and "second" used in this specification may be used to describe various components, but these components are not limited by these terms. The purpose of using these terms is only to distinguish one component from other components. For example, without departing from the scope of the present invention, the first component may be named as the second component, and similarly, the second component may also be named as the first component.

[0031] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. An elastic force testing fixture matched with a welding fixture, characterized in that: The welding fixture comprises a plurality of positioning holes, wherein elastic blocks and products are embedded in the positioning holes, the bottom of the elastic block is connected to a spring, the top of the elastic block is placed with the product, and the product extends out of the positioning holes under the elastic force of the elastic block so as to protrude from the welding fixture. The elastic force test fixture comprises a test body (1), a test cover (2), a test pressure head (3) and a dynamometer; The test body (1) is hollow inside and open at the top and bottom. The test pressure head (3) is arranged inside the test body (1) and points to the bottom open opening of the test body (1) for pressing the product. The test cover (2) is inserted into the top open opening of the test body (1) and is detachably connected to the test body (1). The dynamometer is clamped between the test cover (2) and the test pressure head (3). The outer diameter of the bottom end face of the test body (1) is larger than the radial dimension of the positioning hole so that when the test pressure head (3) presses the product downward, it contacts and limits the welding fixture, thereby simulating the magnitude of the force that the product is subjected to during the actual production welding process.

2. The elastic force testing fixture matched with the welding fixture according to claim 1, characterized in that: The radial dimension of the bottom opening of the test body (1) is larger than the radial dimension of the product.

3. The elastic force testing fixture matched with the welding fixture according to claim 1, characterized in that: The side wall of the test body (1) is provided with a wire groove (101) connecting the internal hollow space of the test body (1) and the external environment, and the electronic wire of the dynamometer is led out from the wire groove (101).

4. The elastic force testing fixture matched with the welding fixture according to claim 3, characterized in that: The extension direction of the wire groove (101) is parallel to the axial direction of the test body (1).

5. The elastic force testing fixture matched with the welding fixture according to claim 3, characterized in that: The test body (1) comprises a cylindrical body (11) which is open at the top and the bottom, the outer diameter of the bottom end surface of the cylindrical body (11) is larger than the radial dimension of the positioning hole, and the side wall of the cylindrical body (11) is provided with the wire groove (101); The inner side wall of the cylindrical body (11) extends inwardly in the radial direction to form an annular flange (111), and the test pressure head (3) is placed on the annular flange (111).

6. The elastic force testing fixture matched with the welding fixture according to claim 5, characterized in that: The test body (1) further comprises a plurality of ears (12) connected to the outer side wall of the cylindrical body (11), the top surface of the ears (12) being flush with the top end surface of the cylindrical body (11), and the test cover (2) and the ears (12) being locked by a locking member.

7. The elastic force testing fixture matched with the welding fixture according to claim 6, characterized in that: The test cover (2) comprises a cover plate (21) and a first column (22) connected to the bottom surface of the cover plate (21); the first column (22) matches the cylindrical body (11) and is sleeved inside the cylindrical body (11); the cover plate (21) covers the top end surface of the cylindrical body (11) and the top surface of the ear (12); the cover plate (21) and the ear (12) are locked by a locking member.

8. The elastic force testing fixture matched with the welding fixture according to claim 6, characterized in that: The number of the ears (12) is two, and the two ears (12) are arranged opposite to each other with respect to the central axis of the cylindrical body (11); the wire groove (101) extends upward to penetrate the top end surface of the cylindrical body (11).

9. The elastic force testing fixture matched with the welding fixture according to claim 5, characterized in that: The test pressure head (3) comprises a second cylinder (31) and a third cylinder (32) which are coaxially connected, the second cylinder (31) matches the cylindrical body (11) and is sleeved in the cylindrical body (11), the radial dimension of the third cylinder (32) is smaller than the radial dimension of the second cylinder (31), and the radial dimension of the third cylinder (32) is equivalent to the radial dimension of the welding needle, the third cylinder (32) is connected to the bottom end surface of the second cylinder (31), and the bottom end surface of the third cylinder (32) is used for pressing the product.

10. The elastic force testing fixture matched with the welding fixture according to claim 9, characterized in that: The test pressure head (3) is completely accommodated in the test body (1), and the bottom end surface of the third column (32) is flush with or higher than the bottom end surface of the test body (1).

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