Calibration device and PCB testing apparatus

Abstract

The utility model belongs to the field of PCB test technology relates to a kind of calibration device and PCB test equipment.The calibration device includes calibration plate and two calibration components, two the calibration component is relatively arranged along first direction, the calibration component includes first calibration support, second calibration support and compact structure, the second calibration support is rotatably connected in the first calibration support around a rotation axis, the compact structure is installed in the second calibration support, the compact structure is used to cooperate with the second calibration support to the edge of the calibration plate is clamped, and the compact structure can adjust the edge of the calibration plate Clamping force;The first direction is perpendicular to the rotation axis.This calibration device can be more accurate control to the alignment of calibration plate, and can reduce debugging time, improve efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of PCB testing technology, and in particular relates to a calibration device and PCB testing equipment. Background Technology

[0002] When debugging PCB testing equipment, calibration is generally required using a glass calibration board. During calibration, the glass calibration board is first clamped by the clamping structure on the PCB testing equipment. Then, the edges of the glass calibration board are manually pried using a screwdriver or other tools to fine-tune its position, aligning the reference line on the glass calibration board with the reference line on the PCB testing equipment in the height direction. During this process, the position of the glass calibration board after prying can be identified using the vision components on the PCB testing equipment.

[0003] However, it is difficult to precisely control the distance when manually prying the glass calibration plate, which is inefficient and can easily damage the valuable and fragile glass calibration plate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a calibration device and PCB testing equipment to address the low efficiency of existing manual alignment of glass calibration plates.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a calibration device, including a calibration plate and two calibration components. The two calibration components are arranged opposite to each other along a first direction. Each calibration component includes a first calibration bracket, a second calibration bracket, and a clamping structure. The second calibration bracket is rotatably connected to the first calibration bracket about a rotation axis. The clamping structure is installed on the second calibration bracket. The clamping structure is used to cooperate with the second calibration bracket to clamp the edge of the calibration plate, and the clamping structure can adjust the clamping force on the edge of the calibration plate. The first direction is perpendicular to the axis of rotation.

[0006] According to the calibration device of this utility model embodiment, after the clamping structure cooperates with the second calibration bracket to clamp the edge of the calibration plate, the calibration plate is aligned by adjusting the position of the second calibration bracket relative to the first calibration bracket in at least one calibration component. Compared with manually prying the glass calibration plate, this calibration device can achieve more precise control over the alignment of the calibration plate, reduce debugging time, and improve efficiency. In addition, since the clamping structure can adjust the clamping force on the edge of the calibration plate, it can meet different clamping force requirements.

[0007] Optionally, the calibration component further includes a drive structure, which is mounted on the first calibration bracket and its output end is connected to the second calibration bracket. The drive structure is used to drive the second calibration bracket to rotate relative to the first calibration bracket about the rotation axis.

[0008] Optionally, the drive structure includes a first drive bracket, a second drive bracket, a drive bolt, and a first elastic element. The first drive bracket is mounted on the first calibration bracket, the second drive bracket is mounted on the second calibration bracket, the drive bolt is threaded to the first drive bracket, and one end of the drive bolt abuts against the second drive bracket. The first elastic element is elastically connected between the first drive bracket and the second drive bracket, and the first elastic element is used to apply a force to the first drive bracket and the second drive bracket to move closer to each other.

[0009] Optionally, the second calibration bracket is provided with an arc-shaped hole, and the first drive bracket is installed on the first calibration bracket through the arc-shaped hole, and the first drive bracket can move relative to the arc-shaped hole.

[0010] Optionally, the first drive bracket includes a fixed rod and a locking frame. The fixed rod is mounted on the first calibration bracket, and the locking frame is mounted on the fixed rod and can move relative to the fixed rod in a second direction. The drive bolt is threadedly connected to the locking frame. The first elastic element is elastically connected between the fixed rod and the second drive bracket; The second direction is parallel to the axis of rotation.

[0011] Optionally, the locking frame includes a main body, a first locking arm, a second locking arm, and a locking member. The first locking arm and the second locking arm are connected to the main body and are spaced apart along a third direction. A clamping groove is formed between the first locking arm, the second locking arm, and the main body, and the fixing rod is clamped in the clamping groove. The locking member passes through the first locking arm and is threadedly connected to the second locking arm. The locking member and the main body are located on opposite sides of the fixing rod. The first direction, the second direction, and the third direction are perpendicular to each other.

[0012] Optionally, the second drive bracket includes a fixed frame and an adjusting member. The fixed frame is mounted on the second calibration bracket, and the adjusting member is mounted on the fixed frame and can move relative to the fixed frame in a third direction. One end of the drive bolt abuts against the fixed frame, and the first elastic element is elastically connected between the first drive bracket and the adjusting element; The first direction, the rotation axis, and the third direction are perpendicular to each other.

[0013] Optionally, the second calibration bracket includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate and the third connecting plate are respectively connected to opposite sides of the second connecting plate along the first direction. The first connecting plate is rotatably connected to the first calibration bracket about the rotation axis. The clamping structure is installed on the second connecting plate and is used to cooperate with the third connecting plate to clamp the edge of the calibration plate.

[0014] Optionally, the clamping structure includes a clamping bracket and a clamping bolt. The clamping bracket is disposed opposite to the third connecting plate along the second direction. The clamping bolt is threaded to the clamping bracket. One end of the clamping bolt near the third connecting plate can form a clamping gap with the third connecting plate. The edge of the calibration plate can be clamped in the clamping gap. The second direction is parallel to the axis of rotation.

[0015] Optionally, the central axis of the clamping bolt is parallel to the second direction.

[0016] Optionally, the clamping structure further includes an anti-wear pad, which is installed at one end of the clamping bolt near the third connecting plate.

[0017] Optionally, a plurality of clamping bolts are provided, and the plurality of clamping bolts are spaced apart along a third direction; The first direction, the rotation axis, and the third direction are perpendicular to each other.

[0018] Optionally, the first calibration bracket is provided with a slide rail, and the slide rail is arc-shaped; The second calibration bracket is provided with a groove that matches the shape of the slide rail, and the groove is slidably connected to the slide rail.

[0019] Optionally, the first drive bracket is mounted on the slide rail.

[0020] Optionally, the calibration component further includes a positioning structure, which is mounted on the second calibration bracket and can elastically abut against the slide rail along the first direction.

[0021] Optionally, the positioning structure includes a positioning cylinder, a second elastic element, and a positioning element. The positioning cylinder is mounted on the second calibration bracket, the positioning element is disposed on the side of the positioning cylinder near the slide rail, the second elastic element is elastically connected between the positioning cylinder and the positioning element, and the positioning element abuts against the slide rail.

[0022] Optionally, the calibration assembly further includes a locking structure mounted on the second calibration bracket, which locks the second calibration bracket to the first calibration bracket to restrict movement of the second calibration bracket relative to the first calibration bracket.

[0023] Optionally, the second calibration bracket is provided with a sliding hole, which is arc-shaped; The locking structure includes a locking bolt, which passes through the sliding hole and is threadedly connected to the first calibration bracket.

[0024] On the other hand, this utility model embodiment provides a PCB testing device, which includes a workbench and the above-mentioned calibration device. A reference structure is provided on the workbench, the calibration device can be installed on the workbench, and the calibration board is provided with a comparison structure. The two calibration components cooperate to overlap the orthographic projection of the control structure with the orthographic projection of the reference structure in the same plane perpendicular to the axis of rotation.

[0025] According to an embodiment of the PCB testing equipment of this utility model, the calibration device, after the clamping structure cooperates with the second calibration bracket to clamp the edge of the calibration board, adjusts the position of the second calibration bracket relative to the first calibration bracket in at least one calibration component to align the calibration board. Compared with manually prying the glass calibration board, this calibration device can achieve more precise control over the alignment of the calibration board, reduce debugging time, and improve efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a calibration device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a calibration component provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the calibration component provided in one embodiment of the present invention from another angle.

[0027] The reference numerals in the accompanying drawings are as follows: 100. Calibration device; 10. Calibration components; 10a. First calibration components; 10b. Second calibration components; 20. Calibration plate; 1. First calibration bracket; 11. Slide rail; 2. Second calibration bracket; 2a. Arc-shaped hole; 21. First connecting plate; 22. Second connecting plate; 23. Third connecting plate; 24. Sliding groove; 25. Sliding hole; 3. Clamping structure; 31. Clamping bracket; 32. Clamping bolt; 33. Anti-wear pad; 4. Drive structure; 41. First drive bracket; 411. Fixing rod; 412. Locking frame; 4121. Main body; 4122. First locking arm; 4123. Second locking arm; 4124. Locking component; 4125. Clamping groove; 42. Second drive bracket; 421. Fixing frame; 422. Adjusting component; 43. Drive bolt; 44. First elastic component; 5. Positioning structure; 6. Locking structure; 61. Locking bolt; L, axis of rotation; x, first direction; z, second direction; y, third direction. Detailed Implementation

[0028] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figures 1 to 3 As shown, the calibration device 100 provided in this embodiment of the present invention includes a calibration plate 20 and two calibration components 10. The two calibration components 10 are arranged opposite each other along a first direction x. Each calibration component 10 includes a first calibration bracket 1, a second calibration bracket 2, and a clamping structure 3. The second calibration bracket 2 is rotatably connected to the first calibration bracket 1 about a rotation axis L. The clamping structure 3 is installed on the second calibration bracket 2. The clamping structure 3 is used to cooperate with the second calibration bracket 2 to clamp the edge of the calibration plate 20, and the clamping structure 3 can adjust the clamping force on the edge of the calibration plate 20.

[0030] The first direction x is perpendicular to the axis of rotation L.

[0031] For example, the calibration plate 20 is a glass calibration plate, using high-purity soda glass or special ceramics as the substrate. It has an extremely low coefficient of thermal expansion (close to zero), maintaining sub-micron dimensional stability under extreme temperature changes. The surface is treated with nano-level frosting to eliminate reflective interference, ensuring that measurement accuracy is unaffected by ambient light. The glass calibration plate may be equipped with a reference structure, such as a cross-shaped reference line, a checkerboard pattern, or a dot matrix.

[0032] For ease of understanding, one of the two calibration components 10 can be designated as the first calibration component 10a, and the other as the second calibration component 10b. The first calibration component 10a and the second calibration component 10b are arranged opposite each other along the first direction x. Specifically, the first calibration component 10a and the second calibration component 10b are mirror-symmetrically arranged, with their plane of symmetry perpendicular to the first direction x; or, the first calibration component 10a and the second calibration component 10b are centrally symmetrically arranged, with the line connecting their center of symmetry and the center of the calibration plate 20 parallel to the axis of rotation L.

[0033] The second calibration bracket 2 of the first calibration component 10a and the second calibration bracket 2 of the second calibration component 10b can rotate around the same rotation axis L.

[0034] After the clamping structure 3 of each calibration component 10 engages with the second calibration bracket 2 to clamp the edge of the calibration plate 20, adjustments can be made in the following manner: When the position of the second calibration bracket 2 of the first calibration component 10a relative to the first calibration bracket 1 of the first calibration component 10a remains unchanged, and the second calibration bracket 2 of the second calibration component 10b rotates relative to the first calibration bracket 1 of the second calibration component 10b, the positions of the second calibration bracket 2 of the first calibration component 10a and the clamping structure 3 remain unchanged, and the second calibration bracket 2 of the second calibration component 10b and the clamping structure 3 move synchronously. Under the clamping action of each calibration component 10, the calibration plate 20 will undergo a slight deflection.

[0035] When the rotation direction of the second calibration bracket 2 of the first calibration component 10a is the same as that of the second calibration bracket 2 of the second calibration component 10b, the calibration plate 20 will rotate under the clamping action of each calibration component 10.

[0036] The calibration device 100 provided in this embodiment of the invention, after the clamping structure 3 cooperates with the second calibration bracket 2 to clamp the edge of the calibration plate 20, adjusts the position of the second calibration bracket 2 relative to the first calibration bracket 1 in at least one calibration component 10 to align the calibration plate 20. Compared with manually prying the glass calibration plate 20, the calibration device 100 can provide more precise control over the alignment of the calibration plate 20, reduce debugging time, and improve efficiency. In addition, since the clamping structure 3 can adjust the clamping force on the edge of the calibration plate 20, it can meet different clamping force requirements.

[0037] In one embodiment, such as Figure 2 and Figure 3As shown, the calibration assembly 10 also includes a drive structure 4, which is mounted on the first calibration bracket 1. The output end of the drive structure 4 is connected to the second calibration bracket 2. The drive structure 4 is used to drive the second calibration bracket 2 to rotate relative to the first calibration bracket 1 around the rotation axis L.

[0038] By setting up a drive structure 4, and driving the second calibration bracket 2 to rotate relative to the first calibration bracket 1 around the rotation axis L, the calibration device 100 can more accurately control the alignment of the calibration plate 20, and reduce debugging time and improve efficiency.

[0039] In one embodiment, such as Figure 2 and Figure 3 As shown, the drive structure 4 includes a first drive bracket 41, a second drive bracket 42, a drive bolt 43, and a first elastic member 44. The first drive bracket 41 is mounted on the first calibration bracket 1, the second drive bracket 42 is mounted on the second calibration bracket 2, the drive bolt 43 is threaded to the first drive bracket 41, and one end of the drive bolt 43 abuts against the second drive bracket 42. The first elastic member 44 is elastically connected between the first drive bracket 41 and the second drive bracket 42, and the first elastic member 44 is used to apply a force that brings the first drive bracket 41 and the second drive bracket 42 closer to each other.

[0040] The first elastic element 44 can be a spring.

[0041] When driving the second calibration bracket 2, rotating the drive bolt 43 causes the second drive bracket 42 to move relative to the first drive bracket 41 under the threaded engagement of the first drive bracket 41 and the drive bolt 43. This, in turn, causes the second calibration bracket 2 to rotate relative to the first calibration bracket 1 around the rotation axis L, thus driving the second calibration bracket 2. Furthermore, by providing a first elastic element 44 elastically connected between the first drive bracket 41 and the second drive bracket 42, and applying a force close to each other to the first drive bracket 41 and the second drive bracket 42, the threaded clearance between the first drive bracket 41 and the drive bolt 43 can be eliminated, ensuring higher adjustment accuracy.

[0042] In one embodiment, to facilitate the rotation of the drive bolt 43, a drive handle can be installed at the first end of the drive bolt 43. The drive handle can be a straight line, an elliptical shape, or another non-circular cross-section, facilitating the rotation of both the drive handle and the drive bolt 43. Alternatively, the drive handle can also be a circular cross-section, in which case the radius of the drive handle's cross-section can be larger than the radius of the drive bolt 43's cross-section, further facilitating the rotation of both the drive handle and the drive bolt 43. It should be noted that the "cross-section" here refers to the cross-section perpendicular to the axis of the drive bolt 43.

[0043] In other embodiments not shown in the figure, the drive bolt can also be replaced with other structures, such as drive cylinders, drive motors, etc. Taking the drive cylinder as an example, when the drive structure includes a first drive bracket, a second drive bracket, a drive cylinder and a first elastic element, the cylinder barrel of the drive cylinder can be installed on the first drive bracket, and the piston rod of the drive cylinder extends out of the cylinder barrel of the drive cylinder and abuts against the second drive bracket. The piston rod of the drive cylinder drives the second drive bracket to move relative to the first drive bracket.

[0044] In one embodiment, such as Figure 2 and Figure 3 As shown, the second calibration bracket 2 is provided with an arc-shaped hole 2a, and the first drive bracket 41 is installed on the first calibration bracket 1 through the arc-shaped hole 2a. The first drive bracket 41 can move relative to the arc-shaped hole 2a.

[0045] By setting an arc-shaped hole 2a on the second calibration bracket 2 and setting the first drive bracket 41 through the arc-shaped hole 2a, the movement stroke of the second calibration bracket 2 can be limited by the arc-shaped hole 2a, preventing the second calibration bracket 2 from detaching from the first calibration bracket 1 when moving relative to the first calibration bracket 1.

[0046] In one embodiment, such as Figure 2 and Figure 3 As shown, the first drive bracket 41 includes a fixed rod 411 and a locking bracket 412. The fixed rod 411 is mounted on the first calibration bracket 1, and the locking bracket 412 is mounted on the fixed rod 411 and can move relative to the fixed rod 411 along the second direction z. The drive bolt 43 is threadedly connected to the locking bracket 412.

[0047] The first elastic element 44 is elastically connected between the fixed rod 411 and the second drive bracket 42.

[0048] The second direction z is parallel to the axis of rotation L.

[0049] The first drive bracket 41 consists of a fixing rod 411 and a locking bracket 412. During assembly, one end of the fixing rod 411 can be first installed on the first calibration bracket 1 through the arc-shaped hole 2a, and then the locking bracket 412 can be installed on the other end of the fixing rod 411. By making the first drive bracket 41 a separate unit, the installation of the first drive bracket 41 can be facilitated.

[0050] In one embodiment, such as Figure 2 and Figure 3As shown, the locking frame 412 includes a main body 4121, a first locking arm 4122, a second locking arm 4123, and a locking member 4124. The first locking arm 4122 and the second locking arm 4123 are connected to the main body 4121 and are spaced apart along a third direction y. A clamping groove 4125 is formed between the first locking arm 4122, the second locking arm 4123, and the main body 4121, and the fixing rod 411 is clamped in the clamping groove 4125. The locking member 4124 passes through the first locking arm 4122 and is threadedly connected to the second locking arm 4123. The locking member 4124 and the main body 4121 are located on opposite sides of the fixing rod 411.

[0051] The first direction x, the second direction z, and the third direction y are all perpendicular to each other.

[0052] For example, the second direction z is parallel to the thickness direction of the calibration plate 20, the first direction x is parallel to the length direction of the calibration plate 20, and the third direction y is parallel to the width direction of the calibration plate 20.

[0053] After the locking frame 412 is adjusted relative to the fixed rod 411 along the second direction z, the locking member 4124 can be threaded through the first locking arm 4122 and the second locking arm 4123, so that part of the fixed rod 411 is in the space enclosed by the main body 4121, the first locking arm 4122, the second locking arm 4123 and the locking member 4124. By clamping the fixed rod 411 with the first locking arm 4122 and the second locking arm 4123, the position of the locking frame 412 relative to the fixed rod 411 is locked, preventing the locking frame 412 from rotating.

[0054] In one embodiment, such as Figure 2 and Figure 3 As shown, the second drive bracket 42 includes a fixed frame 421 and an adjusting member 422. The fixed frame 421 is mounted on the second calibration bracket 2, and the adjusting member 422 is mounted on the fixed frame 421 and can move relative to the fixed frame 421 along the third direction y.

[0055] One end of the drive bolt 43 abuts against the fixed bracket 421, and the first elastic element 44 is elastically connected between the first drive bracket 41 and the adjusting element 422.

[0056] The first direction x, the rotation axis L, and the third direction y are all perpendicular to each other.

[0057] For example, the adjusting member 422 can be an adjusting bolt. Specifically, the adjusting bolt is threaded to the fixing frame 421, and the first end of the adjusting bolt protrudes from the side of the fixing frame 421 facing the first drive bracket 41. At this time, one end of the first elastic member 44 can be rotatably connected to the first end of the adjusting bolt.

[0058] By adjusting the position of the adjusting member 422 relative to the fixed bracket 421 along the third direction y, the stretching length of the first elastic member 44 can be adjusted, thereby adjusting the magnitude of the blocking force, which in turn increases the holding force between the driving bolt 43 and the second driving bracket 42, and increases the tight fit between the first calibration bracket 1 and the second calibration bracket 2.

[0059] In one embodiment, such as Figure 2 and Figure 3 As shown, the second calibration bracket 2 includes a first connecting plate 21, a second connecting plate 22, and a third connecting plate 23. The first connecting plate 21 and the third connecting plate 23 are respectively connected to the opposite sides of the second connecting plate 22 along the first direction x. The first connecting plate 21 is rotatably connected to the first calibration bracket 1 about the rotation axis L. The clamping structure 3 is installed on the second connecting plate 22. The clamping structure 3 is used to cooperate with the third connecting plate 23 to clamp the edge of the calibration plate 20.

[0060] At this time, the second calibration bracket 2 is composed of the first connecting plate 21, the second connecting plate 22 and the third connecting plate 23. The second calibration bracket 2 can be rotatably connected to the first calibration bracket 1 through the first connecting plate 21, the clamping structure 3 can be installed through the second connecting plate 22, and the edge of the calibration plate 20 can be clamped through the third connecting plate 23 and the clamping structure 3, which facilitates the subsequent alignment of the calibration plate 20.

[0061] In one embodiment, such as Figure 2 and Figure 3 As shown, the clamping structure 3 includes a clamping bracket 31 and a clamping bolt 32. The clamping bracket 31 is disposed opposite to the third connecting plate 23 along the second direction z. The clamping bolt 32 is threadedly connected to the clamping bracket 31. The end of the clamping bolt 32 near the third connecting plate 23 can form a clamping gap with the third connecting plate 23, and the edge of the calibration plate 20 can be clamped in the clamping gap.

[0062] The second direction z is parallel to the axis of rotation L.

[0063] After the edge of the calibration plate 20 is placed on the third connecting plate 23, the distance between the clamping bolt 32 and the third connecting plate 23 can be adjusted by rotating the clamping bolt 32, that is, the height of the clamping gap can be adjusted until the clamping bolt 32 and the third connecting plate 23 abut together. At this time, the edge of the calibration plate 20 is clamped by the cooperation of the clamping bolt 32 and the third connecting plate 23.

[0064] In one embodiment, such as Figure 2 and Figure 3 As shown, the central axis of the clamping bolt 32 is parallel to the second direction z, so that when the clamping bolt 32 is rotated, the clamping bolt 32 can move along the second direction z and move closer to or away from the third connecting plate 23.

[0065] For example, the larger the distance between the clamping bolt 32 and the third connecting plate 23, the smaller the clamping force on the edge of the calibration plate 20; the smaller the distance between the clamping bolt 32 and the third connecting plate 23, the greater the clamping force on the edge of the calibration plate 20.

[0066] In one embodiment, such as Figure 2 and Figure 3 As shown, the clamping structure 3 also includes an anti-wear pad 33, which is installed at one end of the clamping bolt 32 near the third connecting plate 23.

[0067] The anti-abrasion pad 33 can be made of polyurethane or other materials that can prevent damage to the calibration plate 20, such as silicone.

[0068] For example, the anti-wear pad 33 can be glued to one end of the clamping bolt 32 near the third connecting plate 23, or the anti-wear pad 33 can be sleeved on one end of the clamping bolt 32 near the third connecting plate 23.

[0069] When the clamping bolt 32 is rotated and moves closer to the third connecting plate 23 along the third direction y, the anti-wear pad 33 will contact the calibration plate 20 before the clamping bolt 32. At the same time, the anti-wear pad 33 can prevent the clamping bolt 32 from directly contacting the calibration plate 20, so as to protect the calibration plate 20 and avoid damage to the calibration plate 20.

[0070] In one embodiment, to facilitate the rotation of the clamping bolt 32, a clamping handle can be installed at the end of the clamping bolt 32 away from the third connecting plate 23. This clamping handle can be a straight line shape, an elliptical shape, or another non-circular cross-section structure, facilitating the rotation of both the clamping handle and the clamping bolt 32. Alternatively, the clamping handle can also be a circular cross-section structure. In this case, the radius of the clamping handle's cross-section can be larger than the radius of the clamping bolt 32's cross-section, further facilitating the rotation of both the clamping handle and the clamping bolt 32. It should be noted that the "cross-section" here refers to the cross-section perpendicular to the axis of the clamping bolt 32.

[0071] In one embodiment, such as Figure 2 and Figure 3 As shown, multiple clamping bolts 32 are provided, and the multiple clamping bolts 32 are spaced apart along the third direction y.

[0072] The first direction x, the rotation axis L, and the third direction y are all perpendicular to each other.

[0073] By setting multiple clamping bolts 32, multiple positions on the edge of the calibration plate 20 can be clamped, making the clamping more stable and subsequent fine-tuning more precise.

[0074] In other embodiments not shown in the figure, the clamping structure may also adopt other structures, such as clamping cylinders, clamping motors, etc. Taking a clamping cylinder as an example, when the clamping structure includes a clamping cylinder, the cylinder barrel of the clamping cylinder can be installed on the second calibration bracket, and the piston rod of the clamping cylinder extends out of the end of the cylinder barrel of the clamping cylinder facing the third connecting plate. By cooperating with the third connecting plate, the edge of the calibration plate can be clamped.

[0075] In one embodiment, such as Figure 2 and Figure 3 As shown, the first calibration bracket 1 is equipped with a slide rail 11, which is arc-shaped.

[0076] The second calibration bracket 2 is provided with a slide groove 24 that matches the shape of the slide rail 11, and the slide groove 24 is slidably connected to the slide rail 11.

[0077] By setting an arc-shaped slide rail 11 on the first calibration bracket 1 and setting a slide groove 24 on the second calibration bracket 2 that matches the shape of the slide rail 11, the second calibration bracket 2 can rotate relative to the first calibration bracket 1 about a rotation axis L through the sliding connection between the slide groove 24 and the slide rail 11.

[0078] In one embodiment, such as Figure 2 and Figure 3 As shown, the first drive bracket 41 is mounted on the slide rail 11. Specifically, the fixing rod 411 can be mounted on the slide rail 11 to achieve the installation connection between the first drive bracket 41 and the first calibration bracket 1.

[0079] In one embodiment, such as Figure 2 and Figure 3 As shown, the calibration component 10 also includes a positioning structure 5, which is mounted on the second calibration bracket 2 and can elastically abut against the slide rail 11 along the first direction x.

[0080] By making the positioning structure 5 elastically abut against the slide rail 11 along the first direction x, the gap between the slide rail 11 and the slide groove 24 is eliminated.

[0081] In one embodiment, such as Figure 2 and Figure 3 As shown, the positioning structure 5 includes a positioning cylinder, a second elastic element, and a positioning element. The positioning cylinder is installed on the second calibration bracket 2, the positioning element is located on the side of the positioning cylinder near the slide rail 11, the second elastic element is elastically connected between the positioning cylinder and the positioning element, and the positioning element abuts against the slide rail 11.

[0082] For example, an external thread can be provided on the outer surface of the positioning cylinder, and a threaded hole can be provided on the second calibration bracket 2. The positioning cylinder is threadedly connected to the threaded hole of the second calibration bracket 2 through the external thread.

[0083] For example, the positioning element may be selected as a spherical structure to reduce the contact area between the positioning element and the slide rail 11, thereby reducing the friction between the positioning element and the slide rail 11.

[0084] By installing the positioning cylinder on the second calibration bracket 2, setting the positioning element on the side of the positioning cylinder close to the slide rail 11, and elastically connecting the second elastic element between the positioning cylinder and the positioning element, the positioning element can elastically abut against the slide rail 11 to eliminate the gap between the slide rail 11 and the slide groove 24.

[0085] In one embodiment, such as Figure 2 and Figure 3 As shown, multiple positioning structures 5 are provided, wherein at least one positioning structure 5 is located on the side of the slide rail 11 facing away from the rotation axis L, and at least one positioning structure 5 is located on the side of the slide rail 11 close to the rotation axis L, thereby eliminating the movement gap between the slide rail 11 and the slide groove 24 on opposite sides of the slide rail 11, and also reducing the friction between the second calibration bracket 2 and the slide rail 11.

[0086] In one embodiment, such as Figure 2 and Figure 3 As shown, the calibration assembly 10 also includes a locking structure 6, which is mounted on the second calibration bracket 2. The locking structure 6 can lock the second calibration bracket 2 to the first calibration bracket 1 to restrict the movement of the second calibration bracket 2 relative to the first calibration bracket 1.

[0087] After the second calibration bracket 2 has completed its position adjustment, it can be locked to the first calibration bracket 1 by the locking structure 6 to restrict the free movement of the second calibration bracket 2 relative to the first calibration bracket 1.

[0088] In one embodiment, such as Figure 2 and Figure 3 As shown, the second calibration bracket 2 is provided with a sliding hole 25, which is arc-shaped. Specifically, the sliding hole 25 is provided on the first connecting plate 21.

[0089] The locking structure 6 includes a locking bolt 61, which passes through the sliding hole 25 and is threadedly connected to the first calibration bracket 1.

[0090] For example, the locking bolt 61 includes a nut portion and a screw portion. One end of the screw portion is connected to the nut portion, and the other end of the screw portion passes through the sliding hole 25 and is threadedly connected to the first calibration bracket 1. The first connecting plate 21 is located between the nut portion and the first calibration bracket 1. When the locking bolt 61 is rotated, the nut portion and the first connecting plate 21 can be moved closer and closer to the first calibration bracket 1 until the nut portion abuts against the first connecting plate 21 and the first connecting plate 21 abuts against the first calibration bracket 1. At this time, the friction generated when the first connecting plate 21 abuts against the first calibration bracket 1 prevents the first connecting plate 21 from rotating relative to the first calibration bracket 1, thereby restricting the free movement of the second calibration bracket 2 relative to the first calibration bracket 1.

[0091] The operation steps of the calibration device 100 provided in this embodiment of the utility model are as follows: (1) The first calibration bracket 1 is fixed to the worktable of the PCB testing equipment by screws; (2) The calibration plate 20 is placed on the third connecting plate 23 of the second calibration bracket 2; (3) Adjust the clamping bolt 32 to make the anti-wear pad 33 press against the calibration plate 20; (4) By adjusting the drive bolt 43 to rotate clockwise or counterclockwise, the drive bolt 43 moves forward and backward, and at the same time drives the second calibration bracket 2 to rotate relative to the first calibration bracket 1, so as to align the calibration plate 20. (5) After adjusting and aligning the calibration plate 20, tighten the locking bolt 61. Then the entire glass calibration device 100 is fixed. After the PCB test equipment aligns the calibration plate 20, the positioning accuracy of the equipment is corrected by software compensation.

[0092] This utility model embodiment also provides a PCB testing device, which includes a workbench and the above-mentioned calibration device 100. A reference structure is provided on the workbench, the calibration device 100 can be installed on the workbench, and the calibration board 20 is provided with a comparison structure.

[0093] The two calibration components 10 cooperate with each other to make the orthographic projection of the comparison structure overlap with the orthographic projection of the reference structure in the same plane perpendicular to the rotation axis L.

[0094] The PCB testing equipment provided in this embodiment of the invention includes a calibration device 100 that, after the clamping structure 3 and the second calibration bracket 2 cooperate to clamp the edge of the calibration board 20, adjusts the position of the second calibration bracket 2 relative to the first calibration bracket 1 in at least one calibration component 10 to align the calibration board 20. Compared to manually prying the glass calibration board 20, this calibration device 100 allows for more precise control over the alignment of the calibration board 20, reduces debugging time, and improves efficiency.

[0095] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A calibration device, characterized in that, The device includes a calibration plate and two calibration components, which are arranged opposite to each other along a first direction. Each calibration component includes a first calibration bracket, a second calibration bracket, and a clamping structure. The second calibration bracket is rotatably connected to the first calibration bracket about a rotation axis. The clamping structure is mounted on the second calibration bracket and is used to cooperate with the second calibration bracket to clamp the edge of the calibration plate. The clamping structure can adjust the clamping force on the edge of the calibration plate. The first direction is perpendicular to the axis of rotation.

2. The calibration device according to claim 1, characterized in that, The calibration component further includes a drive structure, which is mounted on the first calibration bracket. The output end of the drive structure is connected to the second calibration bracket, and the drive structure is used to drive the second calibration bracket to rotate relative to the first calibration bracket around the rotation axis.

3. The calibration device according to claim 2, characterized in that, The drive structure includes a first drive bracket, a second drive bracket, a drive bolt, and a first elastic element. The first drive bracket is mounted on the first calibration bracket, and the second drive bracket is mounted on the second calibration bracket. The drive bolt is threaded to the first drive bracket, and one end of the drive bolt abuts against the second drive bracket. The first elastic element is elastically connected between the first drive bracket and the second drive bracket, and the first elastic element is used to apply a force to the first drive bracket and the second drive bracket to move closer to each other.

4. The calibration device according to claim 3, characterized in that, The second calibration bracket is provided with an arc-shaped hole, and the first drive bracket is installed on the first calibration bracket through the arc-shaped hole. The first drive bracket can move relative to the arc-shaped hole.

5. The calibration device according to claim 3, characterized in that, The first drive bracket includes a fixed rod and a locking frame. The fixed rod is mounted on the first calibration bracket, and the locking frame is mounted on the fixed rod and can move relative to the fixed rod in a second direction. The drive bolt is threadedly connected to the locking frame. The first elastic element is elastically connected between the fixed rod and the second drive bracket; The second direction is parallel to the axis of rotation.

6. The calibration device according to claim 5, characterized in that, The locking frame includes a main body, a first locking arm, a second locking arm, and a locking member. The first locking arm and the second locking arm are connected to the main body and are spaced apart along a third direction. A clamping groove is formed between the first locking arm, the second locking arm, and the main body, and the fixing rod is clamped in the clamping groove. The locking member passes through the first locking arm and is threadedly connected to the second locking arm. The locking member and the main body are located on opposite sides of the fixing rod. The first direction, the second direction, and the third direction are perpendicular to each other.

7. The calibration device according to claim 3, characterized in that, The second drive bracket includes a fixed frame and an adjusting member. The fixed frame is mounted on the second calibration bracket, and the adjusting member is mounted on the fixed frame and can move relative to the fixed frame in a third direction. One end of the drive bolt abuts against the fixed frame, and the first elastic element is elastically connected between the first drive bracket and the adjusting element; The first direction, the rotation axis, and the third direction are perpendicular to each other.

8. The calibration device according to claim 3, characterized in that, The second calibration bracket includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate and the third connecting plate are respectively connected to opposite sides of the second connecting plate along the first direction. The first connecting plate is rotatably connected to the first calibration bracket about the rotation axis. The clamping structure is installed on the second connecting plate and is used to cooperate with the third connecting plate to clamp the edge of the calibration plate.

9. The calibration device according to claim 8, characterized in that, The clamping structure includes a clamping bracket and a clamping bolt. The clamping bracket is disposed opposite to the third connecting plate along the second direction. The clamping bolt is threaded to the clamping bracket. One end of the clamping bolt near the third connecting plate can form a clamping gap with the third connecting plate. The edge of the calibration plate can be clamped in the clamping gap. The second direction is parallel to the axis of rotation.

10. The calibration device according to claim 9, characterized in that, The central axis of the clamping bolt is parallel to the second direction.

11. The calibration device according to claim 9, characterized in that, The clamping structure also includes an anti-wear pad, which is installed at one end of the clamping bolt near the third connecting plate.

12. The calibration device according to claim 9, characterized in that, The clamping bolts are provided in multiple ways, and the multiple clamping bolts are spaced apart along a third direction; The first direction, the rotation axis, and the third direction are perpendicular to each other.

13. The calibration device according to claim 3, characterized in that, The first calibration bracket is provided with a slide rail, which is arc-shaped; The second calibration bracket is provided with a groove that matches the shape of the slide rail, and the groove is slidably connected to the slide rail.

14. The calibration device according to claim 13, characterized in that, The first drive bracket is mounted on the slide rail.

15. The calibration device according to claim 13, characterized in that, The calibration component further includes a positioning structure, which is mounted on the second calibration bracket and can elastically abut against the slide rail along the first direction.

16. The calibration device according to claim 15, characterized in that, The positioning structure includes a positioning cylinder, a second elastic element, and a positioning element. The positioning cylinder is installed on the second calibration bracket, and the positioning element is disposed on the side of the positioning cylinder near the slide rail. The second elastic element is elastically connected between the positioning cylinder and the positioning element, and the positioning element abuts against the slide rail.

17. The calibration device according to claim 1, characterized in that, The calibration assembly further includes a locking structure mounted on the second calibration bracket. The locking structure is capable of locking the second calibration bracket to the first calibration bracket to restrict the movement of the second calibration bracket relative to the first calibration bracket.

18. The calibration device according to claim 17, characterized in that, The second calibration bracket is provided with a sliding hole, which is arc-shaped; The locking structure includes a locking bolt, which passes through the sliding hole and is threadedly connected to the first calibration bracket.

19. A PCB testing device, characterized in that, The device includes a workbench and a calibration device as described in any one of claims 1-18, wherein a reference structure is provided on the workbench, the calibration device can be mounted on the workbench, and the calibration plate is provided with a comparison structure. The two calibration components cooperate to overlap the orthographic projection of the control structure with the orthographic projection of the reference structure in the same plane perpendicular to the axis of rotation.

Images