Crimping mechanism and pressure testing device

Abstract

The utility model relates to a crimping mechanism and a pressure testing device. The crimping mechanism comprises a base plate, a plurality of driving members, a support plate and pressure head assemblies arranged in one-to-one correspondence with the plurality of driving members. When a pressure test is carried out, the servo mechanism drives the whole crimping mechanism to get close to the carrier carrying the chip until the plurality of positioning seats are respectively abutted against the positioning structures on the carrier to realize positioning. Then, each driving member drives the corresponding pressure head to move towards the chip so as to apply test pressure to the chip, thereby realizing batch test. Due to the fact that the base plate and the supporting plate are supported by the supporting rods, the supporting strength of the supporting plate is high. Therefore, when the positioning base abuts against the positioning structure, the supporting plate is not prone to generating large deformation due to the counter-acting force, it is ensured that the multiple pressing heads can be kept in the same plane, the situation that part of the pressing heads abut excessively, but part of the pressing heads abut not in place is effectively avoided, and then the accuracy of batch testing can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a crimping mechanism and a pressure testing device. Background Art

[0002] Chips need to be pressure tested before leaving the factory. Generally, a servo motor drives the pressure head to move toward the chip until the pressure head presses against the chip, and then the test pressure can be determined by reading the servo motor torque value. In order to improve the test efficiency, the pressure measuring device usually has multiple pressure heads to perform batch tests on multiple chips at the same time. The servo motor can drive multiple pressure heads to move at the same time to press against multiple chips respectively. However, due to many factors, it often happens that some pressure heads press too much, while some pressure heads do not press in place, thus affecting the accuracy of batch testing. Moreover, excessive pressure will also cause deformation of the support panel, further aggravating the inconsistency of pressure measurement accuracy. Utility Model Content

[0003] Based on this, it is necessary to provide a crimping mechanism and a pressure testing device that can improve the accuracy of batch testing in order to address the above problems.

[0004] A crimping mechanism, comprising:

[0005] Base plate;

[0006] A plurality of driving members are mounted on one side of the base plate;

[0007] A support plate is disposed on a side of the bottom plate facing the driving member, and a plurality of support rods are disposed between the support plate and the bottom plate, and two ends of each support rod are respectively connected to the support plate and the bottom plate; and

[0008] Multiple pressure head assemblies are arranged one by one corresponding to the multiple driving members, each of the pressure head assemblies includes a positioning seat and a pressure head slidably inserted into the positioning seat, and the multiple positioning seats are installed on the side of the support plate facing away from the driving member. The multiple pressure heads penetrate the support plate and are transmission-connected to the corresponding driving members.

[0009] In one embodiment, the driving member is configured as a diaphragm cylinder and is detachably mounted on the base plate.

[0010] In one embodiment, each of the driving members is mounted on the base plate via a threaded fastener, and the threaded fastener is screwed into the driving member and the base plate in sequence from the base plate toward a side of the support plate.

[0011] In one of the embodiments, it further includes side panels vertically extending from the edges of the two opposite sides of the bottom plate, and the two ends of the support plate are respectively mounted on the side panels on both sides.

[0012] In one embodiment, a plurality of the support rods are arranged in at least one row between the support plate and the bottom plate.

[0013] In one embodiment, the plurality of support rods have the same height and extend in a direction perpendicular to the bottom plate and the support plate.

[0014] In one embodiment, at least part of the side wall of the driving member is provided with an avoidance groove, and the plurality of support rods are all disposed through the avoidance groove.

[0015] In one embodiment, the positioning seat can elastically float relative to the support plate along the sliding direction of the pressing head.

[0016] In one embodiment, each pressing head assembly further includes a guide rod and a spring. The guide rod is fixed to the support plate and extends along the sliding direction of the pressing head. The positioning seat is slidably sleeved on the guide rod, and the spring is sleeved on the guide rod and clamped between the support plate and the positioning seat.

[0017] A pressure testing device includes a servo mechanism and a crimping mechanism as described in any one of the above preferred embodiments. The crimping mechanism is disposed at a driving end of the servo mechanism.

[0018] In the above crimping mechanism and pressure testing device, during pressure testing, the servo mechanism can first drive the entire crimping mechanism to approach the carrier carrying the chip until the plurality of positioning seats respectively abut against the positioning structures on the carrier to achieve positioning. Then, each driving member drives the corresponding pressing head to move towards the chip to apply a test pressure to the chip, thereby realizing batch testing. Since the support between the bottom plate and the support plate is provided by a plurality of support rods, the support strength of the support plate is relatively high. Therefore, when the positioning seat abuts against the positioning structure, the support plate is not easily deformed greatly due to the reaction force, so as to ensure that the plurality of pressing heads can be kept in the same plane, effectively avoiding the situation where some pressing heads are pressed excessively while some pressing heads are not pressed in place, and further improving the accuracy of batch testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the pressure testing device in a preferred embodiment of the present invention;

[0021] Figure 2 for Figure 1 A front view of the crimping mechanism in the pressure testing device shown;

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of a part A in the crimping mechanism shown;

[0023] Figure 4 for Figure 2 The schematic diagram of the crimping mechanism shown is a partial structure diagram after omitting the support plate and the crimping head assembly;

[0024] Figure 5 for Figure 4 A top view of the partial structure shown. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0031] Please refer to Figure 1 , the present utility model provides a pressure testing device 10 and a crimping mechanism 100. Among them, the pressure testing device 10 includes a crimping mechanism 100 and a servo mechanism 200.

[0032] The servo mechanism 200 can adopt a structure of a cylinder, a motor or a combination of a motor and a screw-thread lead screw pair. The crimping mechanism 100 is installed at the driving end of the servo mechanism 200 and can move towards a carrier carrying a plurality of chips under the drive of the servo mechanism 200. After the crimping mechanism 100 presses against the chip to be tested in the carrier, it can apply a test pressure to the pressed chip, thereby completing the pressure test.

[0033] Please refer to together Figure 2 and Figure 3 , the crimping mechanism 100 in the preferred embodiment of the present utility model includes a bottom plate 110, a driving member 120, a support plate 130, a press head assembly 140 and a support rod 150.

[0034] The bottom plate 110 plays a supporting role and can be directly connected to the servo mechanism 200. A plurality of driving members 120 are provided and installed on one side of the bottom plate 110. A plurality of pressing head assemblies 140 are also provided and are arranged in one-to-one correspondence with the plurality of driving members 120. The support plate 130 is arranged on the side of the bottom plate 110 facing the driving member 120 and is used for installing the pressing head assembly 140.

[0035] Each pressing head assembly 140 includes a positioning seat 141 and a pressing head 142 slidably passing through the positioning seat 141. Among them, a plurality of positioning seats 141 are installed on the side of the support plate 130 facing away from the driving member 120, and a plurality of pressing heads 142 penetrate the support plate 130 and are in transmission connection with the corresponding driving members 120. It can be seen that each pressing head 142 can slide relative to the positioning seat 141 under the drive of the corresponding driving member 120. The pressing head 142 is generally strip-shaped and extends substantially perpendicular to the support plate 130, and each pressing head 142 can slide along its own axis relative to the positioning seat 141 where it is located.

[0036] A plurality of positioning structures (not shown in the figure) corresponding to the plurality of pressing head assemblies 140 are provided on the carrier for carrying the chips. The positioning structures can cooperate with the positioning seats 141 to position each pressing head assembly 140, so as to ensure that the plurality of pressing heads 142 can be respectively aligned with the plurality of chips to be tested. When performing a pressure test, first, the servo mechanism 200 drives the pressing mechanism 100 as a whole to approach the carrier until the plurality of positioning seats 141 respectively abut against the plurality of positioning structures to achieve positioning. Then, each driving member 120 drives the corresponding pressing head 142 to move towards the chip, and the test pressure can be applied to the chip, so as to perform a batch test on the plurality of chips in the carrier.

[0037] Furthermore, a plurality of support rods 150 are provided between the support plate 130 and the bottom plate 110, and both ends of each support rod 150 are respectively connected to the support plate 130 and the bottom plate 110. Both ends of the support rod 150 can be threadedly connected to the support plate 130 and the bottom plate 110, or can only abut. Under the support of the plurality of support rods 150, the support strength of the support plate 130 is significantly improved and it is not easy to deform when subjected to an external force.

[0038] Therefore, when the servo mechanism 200 drives the pressing mechanism 100 as a whole to approach the carrier and the positioning seat 141 abuts against the positioning structure, the support plate 130 is not easy to generate a large deformation due to the reaction force of the positioning structure, so as to ensure that the plurality of pressing heads 142 can be kept in the same plane, effectively avoiding the situation that some pressing heads 142 are pressed excessively while some pressing heads 142 are not pressed in place. In this way, the test pressures provided by the plurality of pressing heads 142 can be more consistent, ensuring the accuracy of the pressure test results.

[0039] Specifically, in this embodiment, the plurality of support rods 150 have the same height and extend in a direction perpendicular to the bottom plate 110 and the support plate 130. The vertically extending support rods 150 occupy less lateral space. Moreover, since the plurality of support rods 150 have equal heights, the support plate 130 can be ensured to be parallel to the bottom plate 110.

[0040] In this embodiment, the plurality of support rods 150 are arranged in at least one row between the support plate 130 and the bottom plate 110. In this way, the support of the plurality of support rods 150 to the support plate 130 is more balanced, and the anti-deformation ability of the support plate 130 is also stronger. Preferably, the plurality of support rods 150 are arranged in a matrix. For example, if there are twelve support rods 150 between the support plate 130 and the bottom plate 110, then every three support rods 150 can be arranged at equal intervals along the width direction of the bottom plate 110 to form a column, and the three columns of support rods 150 are arranged at equal intervals along the length direction of the bottom plate 110.

[0041] In this embodiment, the crimping mechanism 100 further includes side plates 170 vertically extending from the edges on opposite sides of the bottom plate 110, and both ends of the support plate 130 are respectively mounted on the side plates 170 on both sides. Both ends of the support plate 130 can be fixed to the side plates 170 by screws. Since the side plates 170 can also provide support for both ends of the support plate 130, the anti-deformation ability of the support plate 130 can be further enhanced.

[0042] Please refer to Figure 4 , in this embodiment, at least part of the side wall of the driving member 120 is provided with an avoidance groove 121, and the plurality of support rods 150 all pass through the avoidance groove 121. In this way, the plurality of driving members 120 can be arranged close to each other, and the installation space for the support rods 150 is reserved by providing the avoidance groove 121. In this way, the structure of the crimping mechanism 100 can be made more compact, which is beneficial to realizing miniaturization and light weight.

[0043] In this embodiment, the positioning seat 141 can elastically float relative to the support plate 130 along the sliding direction of the pressing head 142. Therefore, when the servo mechanism 200 drives the entire crimping mechanism 100 to approach the carrier, the positioning seat 141 can elastically abut against the positioning structure of the carrier, thereby avoiding hard contact between the positioning seat 141 and the positioning structure and causing damage to the carrier and the positioning seat 141, and avoiding excessive impact on the support plate 130, thereby being beneficial to maintaining the morphological stability of the support plate 130.

[0044] Furthermore, please refer to again Figure 3, in this embodiment, each indenter assembly 140 further includes a guide rod 143 and a spring 144. The guide rod 143 is fixed to the support plate 130 and extends along the sliding direction of the indenter 142. The positioning seat 141 is slidably sleeved on the guide rod 143, and the spring 144 is sleeved on the guide rod 143 and clamped between the support plate 130 and the positioning seat 141.

[0045] Each indenter assembly 140 generally includes a plurality of guide rods 143 circumferentially distributed along the positioning seat 141. Each positioning seat 141 is installed on the support plate 130 through the plurality of guide rods 143, and the stability is better. Specifically, when the positioning seat 141 abuts against the positioning structure of the carrier, the reaction force of the positioning structure can force the positioning seat 141 to retreat along the guide rod 143 and compress the spring 144, so that the positioning seat 141 realizes elastic floating.

[0046] In addition, in this embodiment, the driving member 120 is set as a diaphragm cylinder and is detachably installed on the bottom plate 110. The diaphragm cylinder as the driving member 120 has the advantages of simple structure and small air consumption, and the stroke of the diaphragm cylinder is short, which is convenient for arrangement in a narrow space. The diaphragm cylinder is prone to failure after being used for a preset time, so it is detachably installed on the bottom plate 110, which is convenient for maintenance or replacement.

[0047] Further, please refer to Figure 5 , in this embodiment, each driving member 120 is installed on the bottom plate 110 through a threaded fastener 160, and the threaded fastener 160 is screwed into the driving member 120 and the bottom plate 110 in sequence from the side of the bottom plate 110 facing the support plate 130.

[0048] When it is necessary to repair or replace the diaphragm cylinder, when the bottom plate 110 is located on the equipment, the support plate 130 can be first removed from the bottom plate 110, and the threaded fastener 160 fixing the diaphragm cylinder can be exposed. At this time, directly operate the threaded fastener 160 from the front to repair or replace a single diaphragm cylinder. Since it is not necessary to flip the bottom plate 110 as a whole when operating the threaded fastener 160, it is not necessary to separate the bottom plate 110 from the servo mechanism 200, so that the cost and time required for replacing the diaphragm cylinder can be reduced.

[0049] When the above crimping mechanism 100 and the pressure testing device 10 perform a pressure test, the servo mechanism 200 can first drive the entire crimping mechanism 100 to approach the carrier for carrying the chip until the plurality of positioning seats 141 respectively abut against the positioning structures on the carrier to achieve positioning. Then, each driving member 120 drives the corresponding indenter 142 to move towards the chip to apply a test pressure to the chip, thereby realizing batch testing. Since the bottom plate 110 and the support plate 130 are supported by a plurality of support rods 150, the support strength of the support plate 130 is relatively high. Therefore, when the positioning seat 141 abuts against the positioning structure, the support plate 130 is not easily deformed greatly due to the reaction force, so as to ensure that the plurality of indenters 142 can be kept in the same plane, effectively avoiding the situation that some indenters 142 are pressed excessively while some indenters 142 are not pressed in place, and further improving the accuracy of batch testing.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0051] The above-described embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A crimping mechanism, characterized in that: include: Base plate; A plurality of driving members are mounted on one side of the base plate; A support plate is disposed on a side of the bottom plate facing the driving member, and a plurality of support rods are disposed between the support plate and the bottom plate, and two ends of each support rod are respectively connected to the support plate and the bottom plate; and Multiple pressure head assemblies are arranged one by one corresponding to the multiple driving members, each of the pressure head assemblies includes a positioning seat and a pressure head slidably inserted into the positioning seat, and the multiple positioning seats are installed on the side of the support plate facing away from the driving member. The multiple pressure heads penetrate the support plate and are transmission-connected to the corresponding driving members.

2. The crimping mechanism according to claim 1, characterized in that: The driving member is configured as a diaphragm cylinder and is detachably mounted on the base plate.

3. The crimping mechanism according to claim 2, characterized in that: Each of the driving members is mounted on the base plate through a threaded fastener, and the threaded fastener is screwed into the driving member and the base plate in sequence from the base plate toward one side of the support plate.

4. The crimping mechanism according to claim 1, characterized in that: It also includes side plates vertically extending from the edges of the bottom plate on two opposite sides, and the two ends of the support plate are respectively installed on the side plates on both sides.

5. The crimping mechanism according to claim 1, characterized in that: A plurality of the support rods are arranged in at least one row between the support plate and the bottom plate.

6. The crimping mechanism according to claim 1, characterized in that: The plurality of support rods have the same height and extend in a direction perpendicular to the bottom plate and the support plate.

7. The crimping mechanism according to claim 1, characterized in that: At least part of the side walls of the driving member are provided with avoidance grooves, and the plurality of support rods are all passed through the avoidance grooves.

8. The crimping mechanism according to claim 1, characterized in that: The positioning seat can float elastically relative to the support plate along the sliding direction of the pressure head.

9. The crimping mechanism according to claim 8, characterized in that: Each of the pressure head assemblies also includes a guide rod and a spring. The guide rod is fixed to the support plate and extends along the sliding direction of the pressure head. The positioning seat is slidably mounted on the guide rod. The spring is mounted on the guide rod and clamped between the support plate and the positioning seat.

10. A pressure testing device, characterized in that: It comprises a servo mechanism and a crimping mechanism as described in any one of claims 1 to 9, wherein the crimping mechanism is arranged at the driving end of the servo mechanism.

Images