Positioning jig and test apparatus

Abstract

A positioning jig, comprising a base plate (110) and a first positioning assembly. The first positioning assembly comprises a supporting rod (121), a pressing rod (122), and a driving module. The supporting rod (121) is arranged on the base plate (110) and used for supporting one side of a workpiece along a first direction. The pressing rod (122) is rotatably arranged on the base plate (110) about a rotation axis. The driving module is arranged on the base plate (110), and is connected to the pressing rod (122) so as to drive the pressing rod (122) to rotate about the rotation axis. During rotation, the pressing rod (122) can press against the other side of the workpiece along the first direction to tightly press the workpiece against the supporting rod (121). Since the workpiece is tightly pressed by the rotating pressing rod (122), the driving module only needs to drive the pressing rod (122) to rotate, eliminating the need to arrange a driving structure in the Z direction. As a result, the positioning jig occupies less space in the Z-direction, and is applicable to scenarios where Z-direction space is limited. The present invention further relates to a test apparatus.

Description

Positioning fixtures and testing devices Technical Field

[0001] The present application relates to the technical field of product positioning, and in particular to a positioning fixture and a detection device. Background Art

[0002] Currently, product inspections often require the use of carriers to carry and position the product, and some products require positioning in all three axes: X, Y, and Z. Current carriers typically use a drive mechanism to move positioning blocks along the Z axis to position the product. This occupies a significant amount of space in the Z axis, making the carrier unsuitable for applications with limited Z-axis space.

[0003] Application Contents

[0004] Based on this, it is necessary to provide a positioning fixture and detection device that can position products in the Z direction and occupy little space in the Z direction, so as to be applied to scenarios with smaller space in the Z direction, in order to address the problem that the existing carrier needs to set up a driving structure and a positioning block when positioning products in the Z direction, resulting in a large space occupied in the Z direction.

[0005] A positioning jig, comprising:

[0006] substrate; and

[0007] A first positioning assembly includes a support rod, a pressure rod, and a driving module, wherein the support rod is provided on the base plate for supporting one side of the workpiece along a first direction, the pressure rod is rotatably provided on the base plate around a rotation axis, and the driving module is provided on the base plate and connected to the pressure rod to drive the pressure rod to rotate around the rotation axis. During the rotation of the pressure rod, the pressure rod can press against the other side of the workpiece along the first direction to press the workpiece tightly against the support rod;

[0008] Wherein, the first direction is set at an angle to the rotation axis.

[0009] According to the positioning fixture of the present application, the workpiece is supported on a support rod. Then, a driving module drives a pressure rod to rotate and press against the workpiece, thereby pressing the workpiece against the support rod and positioning the workpiece in the Z direction. At the same time, because the workpiece is pressed by the rotating pressure rod, the driving module only needs to drive the pressure rod to rotate, eliminating the need for a driving structure in the Z direction. As a result, the positioning fixture takes up less space in the Z direction and can be used in scenarios where there is less space in the Z direction.

[0010] In one embodiment, the substrate is provided with a detection port for accommodating the workpiece along the first direction, the support rod is arranged on one side of the substrate along the first direction and extends into the detection port, and the pressure rod is rotatably arranged on the other side of the substrate along the first direction.

[0011] In one embodiment, the support rod and the pressure rod are both in contact with the edge of the workpiece to expose the areas to be inspected on both sides of the workpiece along the first direction.

[0012] In one embodiment, the first positioning assembly also includes a mounting seat, the driving module includes a push rod and a first driving member, the mounting seat is arranged on the base plate, the pressure rod and the push rod are both arranged on the mounting seat, and the pressure rod is rotatable around the rotation axis, the push rod is reciprocating along a second direction that is angled with the first direction, the push rod is connected to the pressure rod, and the first driving member is used to drive the push rod to move along the second direction, so that the push rod drives the pressure rod to rotate.

[0013] In one embodiment, a docking hole is provided on the pressure rod, the extension direction of the docking hole is perpendicular to the rotation axis, and the central axis of the docking hole along the extension direction intersects with the rotation axis, one end of the push rod extends into the docking hole and can move back and forth in the docking hole.

[0014] In one embodiment, a roller is provided at one end of the push rod, and the roller is rotatable around an axis parallel to the rotation axis. The roller is located in the docking hole and can roll along the docking hole.

[0015] In one embodiment, the driving module also includes a first reset member, which is connected between the mounting seat and the pressure rod and is used to provide a force to rotate the pressure rod and press against the workpiece. The first driving member is used to drive the push rod to drive the pressure rod to rotate and move away from the workpiece to release the workpiece.

[0016] In one embodiment, the driving module further includes a second restoring member, which can work together with the first restoring member to drive the pressure rod to rotate and press against the workpiece, and the direction of the force provided by the first restoring member is different from the direction of the force provided by the second restoring member.

[0017] In one embodiment, the first reset member and the second reset member are both configured as tension springs, the two ends of the first reset member are respectively connected to the pressure rod and the mounting seat, and the two ends of the second reset member are respectively connected to the mounting seat and the push rod.

[0018] In one embodiment, the push rod can pass through a first position and a second position during movement along the second direction. When the push rod is at the first position, the pressure rod is pressed against the workpiece, and when the push rod is at the second position, the pressure rod is away from the workpiece. The first driving member can drive the push rod to move from the first position to the second position. The second reset member is connected between the mounting seat and the push rod to provide a force to move the push rod from the second position to the first position.

[0019] In one embodiment, the driving module further includes a push block, and the first driving member is connected to the push block to drive the push block to reciprocate along the second direction. During the movement of the push block, it can abut against one end of the push rod to push the push rod from the first position to the second position.

[0020] In one embodiment, the driving module further includes a connecting member, one end of the connecting member is connected to the push rod, and the other end of the connecting member is connected to the pressure rod.

[0021] In one embodiment, the connecting member includes a first connecting portion and a second connecting portion arranged at an angle, one end of the first connecting portion is connected to the push rod, and the other end is connected to the second connecting portion, and the end of the second connecting portion away from the first connecting portion is connected to the pressure rod.

[0022] In one embodiment, the connecting member is arranged in a straight line.

[0023] In one embodiment, the positioning fixture further includes a second positioning component, which is disposed on the substrate and is used to position the workpiece in a second direction.

[0024] In one embodiment, the second positioning assembly includes a fixed block, a positioning block and a second driving member, the fixed block is fixedly connected to the base plate, and the fixed block and the positioning block are arranged opposite to each other along the second direction, the second driving member is arranged on the base plate, and can drive the positioning block to move toward the fixed block along the second direction, so that the positioning block pushes the workpiece to abut against the fixed block.

[0025] In one embodiment, the second positioning assembly further includes a third resetting member, which is connected between the base plate and the positioning block and is used to provide a force that causes the positioning block to move away from the fixed block along the second direction.

[0026] In one embodiment, the positioning fixture further includes a third positioning component, the third positioning component is disposed on the substrate, and the third positioning component is used to position the workpiece in a third direction;

[0027] The first direction, the second direction and the third direction are arranged at an angle to each other.

[0028] In one embodiment, the positioning fixture includes at least two groups of the first positioning components, the two groups of the first positioning components are arranged at intervals, and each group of the first positioning components is used to position the workpiece in the first direction.

[0029] A detection device includes the above-mentioned positioning fixture.

[0030] The details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] FIG1 is a schematic structural diagram of a positioning fixture provided in one embodiment of the present application;

[0033] FIG2 is a schematic structural diagram of a first positioning assembly in the positioning fixture shown in FIG1 ;

[0034] FIG3 is a schematic structural diagram of some components of the first positioning assembly in FIG2 ;

[0035] FIG4 is a schematic structural diagram of the rotation principle of the pressure rod in the first positioning assembly shown in FIG1 ;

[0036] FIG5 is a schematic structural diagram of the first positioning assembly shown in FIG1 when the push rod is located in the first position;

[0037] FIG6 is a schematic structural diagram of the push rod in the first positioning assembly shown in FIG1 when it is located in the second position;

[0038] FIG7 is a schematic structural diagram of some components of a first positioning assembly in another embodiment;

[0039] FIG8 is a schematic structural diagram of the second positioning assembly shown in FIG1 ;

[0040] FIG. 9 is a schematic structural diagram of the second positioning assembly shown in FIG. 8 from another angle. DETAILED DESCRIPTION

[0041] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of the present application, 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 application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. 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 intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0047] As shown in FIG. 1 and FIG. 2 , an embodiment of the present application provides a positioning fixture 100 , including a base plate 110 and a first positioning assembly. The first positioning assembly includes a support rod 121 , a pressure rod 122 and a driving module.

[0048] The support rod 121 is disposed on the base plate 110 for supporting one side of the workpiece along the first direction. The pressure rod 122 is rotatably disposed on the base plate 110 around a rotation axis. The driving module is disposed on the base plate 110 and connected to the pressure rod 122 to drive the pressure rod 122 to rotate around the rotation axis.

[0049] During the rotation process, the pressing rod 122 can press against the other side of the workpiece along the first direction, so as to press the workpiece tightly against the supporting rod 121 and realize the positioning of the workpiece in the first direction.

[0050] The first direction is set at an angle to the rotation axis and is a direction perpendicular to the paper in Figure 1. Specifically, in the embodiment shown in Figure 2, the first direction is perpendicular to the rotation axis and is the Z direction.

[0051] Using the aforementioned positioning fixture, the workpiece is supported on the support rod 121. The drive module then drives the pressure rod 122 to rotate and press against the workpiece, pressing the workpiece against the support rod 121 to achieve Z-direction positioning of the workpiece. Furthermore, because the workpiece is pressed by the rotating pressure rod 122, the drive module only needs to drive the pressure rod 122 to rotate, eliminating the need for a drive structure in the Z direction. This allows the positioning fixture to occupy less space in the Z direction and be used in applications where Z-direction space is limited.

[0052] In one embodiment, the first positioning assembly further includes a mounting seat 123. The mounting seat 123 is disposed on the base plate 110, and the pressing rod 122 is rotatably disposed on the mounting seat 123 around a rotation axis.

[0053] Furthermore, the drive module includes a push rod 124 and a first drive member 125. The push rod 124 is disposed on the mounting base 123 so as to be reciprocally movable along the second direction. The push rod 124 is connected to the pressure rod 122. The first drive member 125 is used to drive the push rod 124 to move along the second direction, so that the push rod 124 drives the pressure rod 122 to rotate.

[0054] The second direction is arranged at an angle to the first direction. Specifically, the second direction is perpendicular to the first direction.

[0055] Optionally, the first driving member 125 is a cylinder.

[0056] In one embodiment, the compression rod 122 is rotatably connected to the mounting base 123 via a rotation shaft 1221. The central axis of the rotation shaft 1221 is the rotation axis, so that the compression rod 122 is rotatable around the rotation axis.

[0057] In the first embodiment, the pressure rod 122 is provided with a bar-shaped docking hole, into which one end of the push rod 124 extends and is capable of reciprocating movement. Thus, the push rod 124 can drive the pressure rod 122 to reciprocate about the rotation axis during its reciprocating movement in the second direction.

[0058] It should be explained that, in a preferred embodiment, the extension direction of the docking hole is perpendicular to the rotation axis, and the center axis of the docking hole along the extension direction intersects with the rotation axis, so as to convert the linear movement of the push rod 124 into the rotation of the pressure rod 122.

[0059] Optionally, a roller is provided at one end of the push rod 124, which is rotatable around an axis parallel to the rotation axis. The roller is located in the docking hole and can roll in the docking hole, so that the push rod 124 can drive the pressure rod 122 to rotate more smoothly.

[0060] Referring to Figures 3 and 4 , in the second embodiment, the drive module further includes a first return member 126 connected between the mounting base 123 and the pressure rod 122 to provide a force that causes the pressure rod 122 to rotate and press against the workpiece. A first drive member 125 is configured to drive the push rod 124 to rotate the pressure rod 122 away from the workpiece, thereby releasing the workpiece.

[0061] In the third embodiment, the driving module further includes a second restoring member 127. The push rod 124 can pass through the first position and the second position during the movement along the second direction.

[0062] The first driving member 125 can drive the push rod 124 to move from the first position to the second position, thereby driving the pressure rod 122 to rotate and move away from the workpiece; the second reset member 127 is connected between the mounting seat 123 and the push rod 124, and is used to provide a force to move the push rod 124 from the second position to the first position.

[0063] Of course, as shown in FIG. 4 , in the fourth embodiment, the driving module may be provided with a first restoring member 126 and a second restoring member 127 at the same time. The first restoring member 126 and the second restoring member 127 can work together to drive the pressure rod 122 to rotate and press against the workpiece.

[0064] Furthermore, the direction of the force provided by the first restoring member 126 is different from the direction of the force provided by the second restoring member 127. In this way, a dead point can be avoided during the rotation of the pressing rod 122.

[0065] It should be noted that, as shown in Figures 5 and 6, the pressure rod 122 only needs to press down to position the workpiece and lift up to release or insert the workpiece, that is, the rotation range of the pressure rod 122 can be 90 degrees. The first reset member 126 and the second reset member 127 act simultaneously to prevent the pressure rod 122 from reaching a dead point within the rotation range.

[0066] It should be noted that this application mainly describes the fourth embodiment.

[0067] For easier understanding, please refer to FIG5 and FIG6. In FIG5, the push rod 124 is located at the first position, and in FIG6, the push rod 124 is located at the second position. In addition, the following description is made in conjunction with FIG4:

[0068] When positioning the workpiece, the push rod 124 moves to the right under the action of the second reset member 127 to drive the pressure rod 122 to rotate counterclockwise, and the first reset member 126 also drives the pressure rod 122 to rotate counterclockwise at the same time, so that the pressure rod 122 is pressed against the workpiece; when releasing the workpiece, the first driving member 125 drives the push rod 124 to move to the left, and the push rod 124 overcomes the force of the second reset member 127 to move to the left, and drives the pressure rod 122 to overcome the force of the first reset member 126 to rotate clockwise, so that the pressure rod 122 is away from the workpiece.

[0069] It is understood that when the push rod 124 is in the second position, the pressure rod 122 is away from the workpiece, so that the workpiece can be released. At the same time, it can be determined that the workpiece can also be placed on the support rod 121 at this time.

[0070] In one embodiment, the driving module further includes a connecting member 128, one end of the connecting member 128 is connected to the push rod 124, and the other end is connected to the pressure rod 122, so that the push rod 124 drives the pressure rod 122 to rotate around the rotation axis when the push rod 124 moves along the second direction.

[0071] Furthermore, the connecting member 128 includes a first connecting portion 1281 and a second connecting portion 1282 arranged at an angle. One end of the first connecting portion 1281 is connected to the push rod 124, and the other end is connected to the second connecting portion 1282. The end of the second connecting portion 1282 away from the first connecting portion 1281 is connected to the pressure rod 122. In this way, the horizontal height of the end of the connecting member 128 connected to the push rod 124 can be higher than the horizontal height of the end of the connecting member 128 connected to the pressure rod 122, thereby further reducing the installation height of the pressure rod 122 and reducing the space occupied in the Z direction.

[0072] In other embodiments, as shown in Figure 7, the connecting member 128 may also be linear. In this case, the installation height of the pressing rod 122 can be increased to be suitable for positioning thicker workpieces.

[0073] As shown in FIG1 , in one embodiment, the drive module further includes a push block 129. A first driving member 125 is connected to the push block 129 to drive the push block 129 to reciprocate along the second direction. During the movement of the push block 129, the push block 129 can abut against one end of the push rod 124 to push the push rod 124 from the first position to the second position.

[0074] In one embodiment, a detection port 111 for accommodating a workpiece is formed through the base plate 110 along a first direction. A support rod 121 is disposed on one side of the base plate 110 along the first direction and extends into the detection port 111 to support the workpiece on one side along the first direction. A pressure rod 122 is rotatably disposed on the other side of the base plate 110 along the first direction to press against the other side of the workpiece along the first direction during rotation.

[0075] In one embodiment, the support rod 121 and the pressure rod 122 are in contact with the edge of the workpiece to expose the areas to be inspected on both sides of the workpiece along the first direction, thereby enabling simultaneous inspection of both sides of the workpiece along the first direction.

[0076] In one embodiment, the first positioning assembly includes a plurality of support rods 121 , which are spaced apart along the circumference of the detection port 111 to more stably support the workpiece.

[0077] Furthermore, the first positioning assembly also includes multiple pressure rods 122, multiple mounting seats 123 and multiple driving modules. The multiple mounting seats 123 are arranged at intervals along the circumference of the detection port 111. Each pressure rod 122 is set on a corresponding mounting seat 123, and each driving module is also set corresponding to a pressure rod 122 to more stably press the workpiece onto the support rod 121.

[0078] Specifically, in the embodiment shown in FIG1 , support rods 121 are provided on both sides of the detection port 111 along the second direction, and the pressure rods 122 are arranged corresponding to the support rods 121, that is, located on both sides of the detection port 111 along the second direction. In addition, the push rods 124 located on the same side can be pushed by the same first driving member 125 and push block 129.

[0079] 1 , in one embodiment, the positioning fixture further includes a second positioning assembly 130. The second positioning assembly 130 is disposed on the substrate 110 and is used to position the workpiece in the second direction.

[0080] Referring to Figures 8 and 9 , the second positioning assembly 130 further includes a fixed block 131, a positioning block 132, and a second driving member 133. The fixed block 131 is fixedly connected to the base plate 110, and the fixed block 131 and the positioning block 132 are respectively located on either side of the inspection port 111 along the second direction. The second driving member 133 is disposed on the base plate 110 and is capable of driving the positioning block 132 to move toward the fixed block 131 along the second direction, so that the positioning block 132 pushes the workpiece into contact with the fixed block 131, thereby positioning the workpiece in the second direction.

[0081] Furthermore, the second positioning assembly 130 further includes a third restoring member 134. The third restoring member 134 is connected between the substrate 110 and the positioning block 132, and is used to provide a force to move the positioning block 132 away from the fixing block 131 along the second direction.

[0082] Optionally, the second driving member 133 is a cylinder. When extended, the second driving member 133 can drive the positioning block 132 to move toward the fixed block 131 along the second direction. When retracted, the positioning block 132 can be moved away from the fixed block 131 along the second direction under the action of the third restoring member 134.

[0083] In one embodiment, the second positioning assembly 130 further includes a buffer 135. The buffer 135 is disposed on the positioning block 132 and is used to abut against the workpiece to prevent the workpiece from being crushed during the positioning process.

[0084] In one embodiment, the positioning fixture further includes a third positioning assembly 140. The third positioning assembly 140 is disposed on the substrate 110 and is used to position the workpiece in a third direction.

[0085] The third direction is arranged at an angle to the first direction and the second direction. Specifically, the first direction, the second direction and the third direction are perpendicular to each other.

[0086] It should be noted that the structure and arrangement of the third positioning assembly 140 are the same as those of the second positioning assembly 130 , and the third positioning assembly 140 is used to position the workpiece in the third direction, so it will not be described in detail here.

[0087] In one embodiment, the positioning fixture includes at least two sets of first positioning components, at least two sets of second positioning components 130, and at least two sets of third positioning components 140, and at least two detection ports 111 are defined on the substrate 110. The at least two detection ports 111 are spaced apart, and each set of the first positioning components, the second positioning components 130, and the third positioning components 140 corresponds to a detection port 111, thereby positioning a workpiece in the first direction, the second direction, and the third direction, respectively.

[0088] In order to facilitate understanding of the technical solution of the present application, the positioning process of the positioning fixture in the above embodiment is described with reference to FIG1 , FIG4 , FIG5 and FIG6 :

[0089] First, the driving end of the first driving member 125 extends to drive the push block 129 toward the push rod 124. The push block 129 pushes the push rod 124 from the first position to the second position. The connecting member 128 rotates the pressure rod 122, thereby raising the pressure rod 122. Next, the workpiece is placed in the inspection port 111 and supported on the support rod 121 at the inspection port 111.

[0090] The second and third positioning assemblies 130 and 140 then position the workpiece in the second and third directions, respectively. The driving end of the first driving member 125 then retracts, and the pressure rod 122, under the action of the first and second return members 126 and 127, rotates and presses against the workpiece, completing the positioning of the workpiece in the first direction. Simultaneously, the push rod 124, under the action of the second return member 127, moves back to the first position.

[0091] It should be noted that, taking the example of second positioning assembly 130 first positioning the workpiece in the second direction, after the workpiece is positioned in the second direction, buffer member 135 on second positioning assembly 130 contacts the workpiece. The workpiece may move during subsequent positioning in the third and first directions. The provision of buffer member 135 prevents scratches and damage to the workpiece.

[0092] Based on the positioning jig in the above embodiment, the present application also relates to a detection device, which can detect the workpiece positioned on the positioning jig.

[0093] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A positioning fixture, characterized in that: include: substrate; and A first positioning assembly includes a support rod, a pressure rod and a driving module, wherein the support rod is disposed on the base plate and is used to support one side of the workpiece along a first direction, the pressure rod is rotatably disposed on the base plate around a rotation axis, the driving module is disposed on the base plate and connected to the pressure rod to drive the pressure rod to rotate around the rotation axis, and the pressure rod can press against the other side of the workpiece along the first direction during rotation to press the workpiece tightly against the support rod; Wherein, the first direction is arranged at an angle with the rotation axis.

2. The positioning fixture according to claim 1, characterized in that: The substrate is provided with a detection port for accommodating the workpiece along the first direction, the support rod is arranged on one side of the substrate along the first direction and extends into the detection port, and the pressure rod is rotatably arranged on the other side of the substrate along the first direction.

3. The positioning fixture according to claim 1, characterized in that: The support rod and the pressure rod are both in contact with the edge of the workpiece to expose the areas to be inspected on both sides of the workpiece along the first direction.

4. The positioning fixture according to claim 1, characterized in that: The first positioning assembly also includes a mounting seat, and the driving module includes a push rod and a first driving member. The mounting seat is arranged on the substrate, and the pressure rod and the push rod are both arranged on the mounting seat, and the pressure rod is rotatable around the rotation axis, and the push rod is reciprocating along a second direction that is angled with the first direction. The push rod is connected to the pressure rod, and the first driving member is used to drive the push rod to move along the second direction so that the push rod drives the pressure rod to rotate.

5. The positioning fixture according to claim 4, characterized in that: The pressure rod is provided with a docking hole, the extension direction of the docking hole is perpendicular to the rotation axis, and the center axis of the docking hole along the extension direction intersects with the rotation axis. One end of the push rod extends into the docking hole and can reciprocate in the docking hole.

6. The positioning fixture according to claim 5, characterized in that: A roller is provided at one end of the push rod. The roller can rotate around an axis parallel to the rotation axis. The roller is located in the docking hole and can roll along the docking hole.

7. The positioning fixture according to claim 4, characterized in that: The driving module also includes a first reset member, which is connected between the mounting seat and the pressure rod and is used to provide a force to rotate the pressure rod and press against the workpiece. The first driving member is used to drive the push rod to drive the pressure rod to rotate and move away from the workpiece to release the workpiece.

8. The positioning fixture according to claim 7, characterized in that: The driving module also includes a second restoring member, which can work together with the first restoring member to drive the pressure rod to rotate and press against the workpiece, and the direction of the force provided by the first restoring member is different from the direction of the force provided by the second restoring member.

9. The positioning fixture according to claim 8, characterized in that: The first reset member and the second reset member are both configured as tension springs, two ends of the first reset member are respectively connected to the pressure rod and the mounting seat, and two ends of the second reset member are respectively connected to the mounting seat and the push rod.

10. The positioning fixture according to claim 8, characterized in that: The push rod can pass through a first position and a second position during movement along the second direction. When the push rod is located at the first position, the pressure rod presses against the workpiece, and when the push rod is located at the second position, the pressure rod moves away from the workpiece. The first driving member can drive the push rod to move from the first position to the second position. The second reset member is connected between the mounting seat and the push rod to provide a force to move the push rod from the second position to the first position.

11. The positioning fixture according to claim 10, characterized in that: The driving module also includes a push block, and the first driving member is connected to the push block to drive the push block to reciprocate along the second direction. During the movement of the push block, it can abut against one end of the push rod to push the push rod from the first position to the second position.

12. The positioning fixture according to claim 4, characterized in that: The driving module also includes a connecting member, one end of which is connected to the push rod, and the other end of which is connected to the pressure rod.

13. The positioning fixture according to claim 12, characterized in that: The connecting member includes a first connecting portion and a second connecting portion which are arranged at an angle, wherein one end of the first connecting portion is connected to the push rod, and the other end is connected to the second connecting portion, and one end of the second connecting portion which is away from the first connecting portion is connected to the pressure rod.

14. The positioning fixture according to claim 12, characterized in that: The connecting piece is arranged in a straight line.

15. The positioning fixture according to any one of claims 1 to 14, characterized in that: The positioning fixture further includes a second positioning component, which is disposed on the substrate and is used to position the workpiece in a second direction.

16. The positioning fixture according to claim 15, characterized in that: The second positioning assembly includes a fixed block, a positioning block and a second driving member, the fixed block is fixedly connected to the substrate, and the fixed block and the positioning block are arranged opposite to each other along the second direction, the second driving member is arranged on the substrate, and can drive the positioning block to move toward the fixed block along the second direction, so that the positioning block pushes the workpiece to abut against the fixed block.

17. The positioning fixture according to claim 16, characterized in that: The second positioning assembly further includes a third resetting member, which is connected between the substrate and the positioning block and is used to provide a force that causes the positioning block to move away from the fixing block along the second direction.

18. The positioning fixture according to any one of claims 15 to 17, characterized in that: The positioning fixture further includes a third positioning component, which is disposed on the substrate and is used to position the workpiece in a third direction; The first direction, the second direction and the third direction are arranged at an angle to each other.

19. The positioning fixture according to any one of claims 1 to 18, characterized in that: The positioning fixture includes at least two groups of the first positioning components, the two groups of the first positioning components are arranged at intervals, and each group of the first positioning components is used to position a workpiece in the first direction.

20. A detection device, characterized in that: A positioning jig comprising any one of claims 1 to 19.

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