A clamp jig

Abstract

The utility model relates to camera processing technical field discloses a kind of without assembling accessory, can avoid the production yield reduction problem and assembly wear problem caused by accessory drop, strong universality, can be adapted to the fixture of multiple machine, multi-station use, the fixture includes tray, tray has installation area and the positioning area around installation area, several installation holes for accommodating product to be processed are set in installation area, installation hole penetrates tray upper surface and tray lower surface, support portion for supporting product to be processed is equipped in installation hole;Positioning area is equipped with guide sleeve through hole for CCD camera alignment detection penetrating tray upper surface and tray lower surface, positioning column fixed on tray upper surface, slot, positioning column is integrally formed with tray, the height of positioning column is less than half of tray thickness, the height of positioning column is adapted to the depth of slot, positioning column is inserted into the slot of adjacent tray when tray is stacked.

Description

Technical Field

[0001] This utility model relates to the field of camera processing technology, and in particular to a jig. Background Technology

[0002] In the manufacturing process of mobile phone cameras, multiple cameras need to be placed in a fixture, which is then combined with corresponding equipment to perform batch polishing, dust removal, transfer, and material handling. Currently, fixtures used for positioning and processing mobile phone cameras in the industry require the use of positioning columns and guide sleeves. Steel positioning columns are installed to achieve positioning for processes such as fixture stacking, automatic handling, and adhesive application. Steel guide sleeves are used to achieve alignment of the vision system for each process, robotic arm handling, and fixing of the processing platform. Due to assembly errors when installing the steel positioning columns and guide sleeves on the fixture, these fixture components are prone to detaching during use. This leads to reduced production yield due to issues such as abnormal machine vision alignment alarms, slippage and scratches caused by fixture stacking, inability to fix the handling platform, and large robotic arm handling errors. Furthermore, after fixture components detach, reinstalling them during fixture maintenance can cause deformation and wear, thus reducing the fixture's lifespan. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing a fixture that eliminates the need for assembly parts, avoids production yield reduction and assembly wear caused by parts falling off, and is highly versatile and adaptable to multiple machines and workstations.

[0004] A jig includes a tray with an installation area and a positioning area surrounding the installation area. The installation area has several installation holes for receiving products to be processed, the installation holes penetrating the upper and lower surfaces of the tray, and each installation hole contains a support portion for supporting the product to be processed. The positioning area has a guide sleeve through-hole penetrating the upper and lower surfaces of the tray and used for CCD camera alignment detection, a positioning post fixed to the upper surface of the tray, and a slot on the lower surface of the tray corresponding to the positioning post. The positioning post is integrally formed with the tray, the height of the positioning post is less than half the thickness of the tray, and the height of the positioning post is adapted to the depth of the slot. The positioning post is inserted into the slot of an adjacent tray when the trays are stacked.

[0005] In one embodiment, the distance from the support to the upper surface of the tray is greater than the distance from the support to the lower surface of the tray.

[0006] In one embodiment, both the upper and lower surfaces of the support are planar.

[0007] In one embodiment, the support is an annular structure protruding from the inner surface of the mounting hole.

[0008] In one embodiment, the support includes a plurality of protrusions arranged at intervals and in a ring on the inner surface of the mounting hole, the protrusions being fixedly connected to the inner wall of the mounting hole.

[0009] In one embodiment, the lower surface of the tray is provided with a flared hole that corresponds to and communicates with the guide sleeve through hole. The flared hole is coaxial with the guide sleeve through hole, and the diameter of the flared hole at the end adjacent to the guide sleeve through hole is smaller than the diameter of the flared hole at the end away from the guide sleeve through hole.

[0010] In one embodiment, the end of the positioning post facing away from the slot is chamfered.

[0011] In one embodiment, the lower surface of the tray has at least two oppositely arranged notches at corresponding positioning areas, the notches penetrating the side of the tray to form an insertion interface.

[0012] In one embodiment, the upper surface of the material tray has at least two oppositely arranged clearance grooves at the corresponding positioning area. The clearance grooves penetrate the side of the material tray, and the distance from the clearance groove to the middle of the installation area is less than the distance from the notch below the clearance groove to the middle of the installation area.

[0013] In one embodiment, the dimension of the clearance groove along the thickness direction of the tray is smaller than the dimension of the notch along the thickness direction of the tray, and the sum of the dimensions of the clearance groove and the notch along the thickness direction of the tray is less than the thickness of the tray.

[0014] The fixture of this invention integrates the positioning pin and the material tray into a single unit, with guide sleeve through holes on the material tray. This eliminates the risk of auxiliary components like the positioning pin falling off the material tray during use, preventing issues such as slippage of stacked fixtures, inability to secure the transport platform, and large errors in robotic arm material handling caused by falling components, thus ensuring high production yield. Simultaneously, the integrated design eliminates component assembly, improving the accuracy of visual point selection and photography. The integrated structure also eliminates the need for component assembly during maintenance, reducing deformation and wear issues caused by component installation and extending the fixture's service life. Furthermore, the fixture is highly versatile and can be used in automated multi-machine and multi-station applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the clamping fixture from one perspective in one embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the clamping fixture from another perspective in one embodiment of the present invention;

[0017] Figure 3 This is a front view of the clamping fixture in one embodiment of the present invention;

[0018] Figure 4 This is a rear view of the clamping fixture in one embodiment of the present invention;

[0019] Figure 5 This is a side view of the clamping fixture in one embodiment of the present invention;

[0020] Figure 6 This is a cross-sectional structural diagram of the clamping fixture in one embodiment of the present invention. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] Please combine Figure 1-6 This utility model discloses a jig that eliminates the need for assembly parts, avoids production yield reduction and assembly wear problems caused by parts falling off, and is highly versatile, adaptable to multiple machines and workstations. The jig includes a material tray 100, which has a plate-like structure. Depending on the workstations on the corresponding automated machine, the material tray 100 can be a rectangular plate-like structure, or a circular or elliptical plate-like structure. Preferably, in this embodiment, the material tray 100 is a rectangular plate-like structure, and the four corners of the material tray 100 are respectively provided with arc-shaped transition portions (i.e., rounded corners) to avoid bumps or damage during the handling of the material tray 100. The material tray 100 is placed horizontally during use. The upper surface of the material tray 100 is the upward-facing wide surface, and the lower surface is the downward-facing wide surface. The entire upper surface edge and the entire lower surface edge of the tray 100 are provided with a 45° chamfer to prevent the edges of the tray 100 from scratching items or workers, and to reduce the damage to the edges of the tray 100.

[0023] The tray 100 has an installation area and a positioning area surrounding the installation area. In other words, the installation area is located within the area enclosed by the positioning area and is in the middle of the tray 100. The installation area has several installation holes 110 for receiving products to be processed. The installation holes 110 penetrate the upper surface and the lower surface of the tray 100, and the installation holes 110 have a support part 120 for supporting the products to be processed. In this way, when multiple trays 100 are stacked, the part of the product on the lower tray 100 that protrudes from the installation hole 110 will be inserted into the corresponding installation hole 110 of the upper tray 100. When the product is transferred between two trays 100, the installation holes 110 and the support part 120 of the two trays 100 work together to position the product and prevent the product from shifting. The positioning area is provided with a guide sleeve through hole 200 that penetrates the upper and lower surfaces of the material tray 100 and is used for CCD camera alignment detection, a positioning post 300 fixed on the upper surface of the material tray 100, and a slot 400 opened on the lower surface of the material tray 100 and corresponding to the positioning post 300. In this embodiment, the guide sleeve through hole 200 is used to provide the point of view for the CCD camera to take pictures before the robot arm picks up and puts up the product in the fixture, so that the CCD camera can collect the position information of the fixture and send it to the robot arm, so that the robot arm can adjust the gripping position according to the position of the fixture to accurately pick up and put up the product. The positioning post 300 and slot 400 provide positioning for the stacked trays 100. The positioning post 300 inserts into the slot 400 of the adjacent tray 100 during stacking. This can also be understood as the positioning post 300 on the lower tray 100 inserting into the slot 400 of the upper tray 100, thereby limiting the horizontal movement of the stacked trays 100 and preventing them from sliding against each other. This also avoids increased shear force on the product from the mounting hole 110 edge caused by relative sliding of the trays 100. In this embodiment, the positioning post 300 and the tray 100 are integrally formed. Therefore, when using the fixture, there is no need to assemble the positioning post 300 and the tray 100, preventing the positioning post 300 from detaching from the tray 100 and avoiding damage to the tray 100 during assembly. The height of the positioning post 300 is less than half the thickness of the tray 100, and the height of the positioning post 300 is adapted to the depth of the slot 400. In other words, in this embodiment, the overall height of the positioning post 300 is relatively small. While positioning the stacked trays 100 by cooperating with the slot 400, it can avoid the problem of insufficient connection strength between the positioning post 300 and the tray 100 due to the slot 400 being too deep or the positioning post 300 being too high, thus preventing the positioning post 300 from being broken.

[0024] In this embodiment, the distance from the support portion 120 to the upper surface of the tray 100 is greater than the distance from the support portion 120 to the lower surface of the tray 100. This allows the portion of the product to be processed to be exposed as much as possible within the mounting hole 110 when the product is clamped in the mounting hole 110 and supported by the support portion 120, facilitating product processing. In this embodiment, the thicknesses of the support portion 120 and the tray 100 must satisfy the following conditions: when the trays 100 are stacked, the product can abut against the corresponding support portions 120 on two adjacent trays 100, and the positioning pin 300 can be inserted into the slot 400. This ensures the stability of the jig stacking structure and prevents the product from shaking during transportation, transfer, and flipping, improving the reliability of product positioning. Furthermore, both the upper and lower surfaces of the support portion 120 are flat, increasing the contact area between the support portion 120 and the product. This avoids excessive localized stress on the product caused by uneven surfaces of the support portion 120, preventing product damage. In addition, in this embodiment, the feeding surface of the material tray 100 has a chamfer with a width of 0.1 mm at the edge of the mounting hole 110, and the upper surface edge of the support part 120 has a chamfer with a width of 0.05 mm, so as to prevent the product from being bumped by the edge of the support part 120 and the edge of the mounting hole 110 during the process of inserting it into the mounting hole 110.

[0025] In one embodiment, the support portion 120 is an annular structure protruding from the inner surface of the mounting hole 110. In other words, the support portion 120 is an annular step fixed to the inner surface of the mounting hole 110, and the annular step is integrally formed with the inner surface of the mounting hole 110. In another embodiment, the support portion 120 includes a plurality of protrusions arranged at intervals and annularly distributed on the inner surface of the mounting hole 110. The protrusions are fixedly connected to the inner wall of the mounting hole 110. In other words, the product is constrained within the mounting hole 110 by the plurality of protrusions protruding from the inner surface of the mounting hole 110. Of course, in actual production, the shape of the support portion 120 can be adjusted as needed, which will not be elaborated here.

[0026] In this embodiment, the mounting area is arrayed with 4 rows and 6 columns, totaling 24 mounting holes 110. Two guide sleeve through holes 200 are spaced apart on one side of the mounting area, and two guide sleeve through holes 200 are spaced apart on the other side of the mounting area. Each of the four corners of the material tray 100 has a positioning post 300 on its upper surface. The lower surface of the material tray 100 has four slots 400 corresponding to each positioning post 300, which increases the number of mating points between adjacent material trays 100 when stacked, thereby improving the stability and reliability of the material trays 100 when stacked. Of course, in actual production, the number of mounting holes 110 on the material tray 100 can be increased or decreased according to production capacity requirements, and the position and number of guide sleeve through holes 200, positioning posts 300, and slots 400 can be adjusted, which will not be elaborated here.

[0027] In one embodiment, the lower surface of the tray 100 has a flared hole 500 corresponding to and communicating with the guide sleeve through hole 200. The flared hole 500 is coaxial with the guide sleeve through hole 200, and the diameter of the flared hole 500 at the end adjacent to the guide sleeve through hole 200 is smaller than the diameter of the flared hole 500 at the end away from the guide sleeve through hole 200. In this embodiment, the guide sleeve through hole 200 is used to provide a positioning reference point when the CCD camera takes pictures. Since the edge of the hole has a transition from light to dark or from dark to light, the guide sleeve through hole 200 can provide a high-contrast, easily identifiable feature, so as to accurately calculate the center coordinates of the guide sleeve through hole 200 and thus determine the position of the fixture. The setting of the flared hole 500 can, on the one hand, prevent the edge of the guide sleeve through hole 200 from chipping or burrs, and on the other hand, reduce the scattering and reflection of the edge of the guide sleeve through hole 200, improve the consistency of the edge contrast of the guide sleeve through hole 200, thereby improving the optical imaging effect, enhancing the quality of CCD camera pictures, and improving the reliability of fixture position information acquisition. The end of the positioning post 300 facing away from the slot 400 is chamfered at 45° with a width of 0.5mm. The slot opening of the slot 400 is chamfered at 45° with a width of 0.1mm. Thus, during the stacking of the trays 100, the chamfer at the slot opening of the slot 400 and the chamfer at the end of the positioning post 300 can play a guiding role, thereby reducing the difficulty of inserting the positioning post 300 into the slot 400 and thus reducing the stacking difficulty of the jig.

[0028] In one embodiment, the lower surface of the material tray 100 has at least two opposing notches 600 at corresponding positioning areas, the notches 600 penetrating the side of the material tray 100 to form insertion interfaces. Preferably, the lower surface of the material tray 100 has one notch 600 at each of its four sides. These notches 600 provide a gripping position for the robot during jig handling, allowing the robot's operating end to insert into the insertion interface to lift the jig. Further, the upper surface of the material tray 100 has at least two opposing clearance grooves 700 at corresponding positioning areas, the clearance grooves 700 penetrating the side of the material tray 100. Additionally, the corners of the inner surfaces of the notches 600 and the edges of the insertion interfaces are provided with arc-shaped transition portions to prevent damage to the robot's operating end, and these arc-shaped transition portions also guide the robot's operating end into the notches 600, reducing the difficulty of moving the jig.

[0029] In this embodiment, two clearance grooves 700 are provided opposite to each other on the upper surface of the material tray 100, and the distance from the clearance groove 700 to the middle of the installation area is less than the distance from the notch 600 below the clearance groove 700 to the middle of the installation area. Thus, when the stacked jigs are in contact with the lower surface of the upper material tray 100 and the upper surface of the lower material tray 100 and are difficult to separate, the clearance grooves 700 of the two adjacent material trays 100 provide a tool insertion area, and the tool can be inserted into the clearance groove 700 to separate the two material trays 100. It should be noted that the dimension of the clearance groove 700 along the thickness direction of the material tray 100 is smaller than the dimension of the notch 600 along the thickness direction of the material tray 100, and the sum of the dimensions of the clearance groove 700 and the notch 600 along the thickness direction of the material tray 100 is smaller than the thickness of the material tray 100. In this way, while facilitating the robotic arm to grasp the fixture and the separation of the two material trays 100 that are fitted together, it ensures that the clearance groove 700 always has a bottom wall that can provide a reaction force for the tool so that the tool can separate the two material trays 100.

[0030] In the manufacturing process of mobile phone cameras, the first step is product loading. The blanks for the first type of product to be produced are placed into the first jig, and the blanks for the second type of product are placed into the second jig. The first and second jigs are then manually stacked, and the stacked first jig is placed at the loading port of the automatic machine. Each loading port can hold a maximum of 20 stacked jigs. During blank loading, a vision system photographs the blanks in the hopper, and a robotic arm retrieves them, placing the first type of blank into the first jig for turnover, and the second type into the second jig for turnover. Next, the first type of product undergoes corona treatment and adhesive application. The blanks are transported via a platform within the first jig for corona treatment to clean dust particles from the surface. After corona treatment, they enter the adhesive application station, where vision-based alignment is used to apply HAF (High Adhesion Film Adhesive) adhesive to the product surface. Subsequently, the first fixture carries the product into the pre-pressing station to pre-press the HAF adhesive on the product, baking it to adhere to the product surface. After pre-pressing, the centrifugal film on the HAF adhesive is removed. Then, the first and second fixtures are joined together and flipped, allowing the two types of products to be flipped and combined for final pressing. After final pressing, a robotic arm transports the entire tray of products to the unloading platform for unloading. Using two stacked and flipped fixtures, 24 pieces of product are transferred to a third fixture, where the robotic arm moves laterally to unload the entire tray. In this way, the coordination of multiple fixtures allows for various automated machine operations such as alignment, handling, assembly, and ADI testing, improving the versatility of the fixtures.

[0031] The aforementioned fixture integrates the positioning pin 300 with the material tray 100, and provides guide sleeve through holes 200 on the material tray 100. This eliminates the risk of auxiliary components like the positioning pin 300 falling off the material tray 100 during use, preventing issues such as slippage of stacked fixtures, inability to secure the transport platform, and large errors in material handling by the robotic arm caused by falling components, thus ensuring high production yield. Simultaneously, the integrated design eliminates component assembly, improving the accuracy of visual point selection and image capture. The integrated structure also eliminates the need for component assembly during maintenance, reducing deformation and wear issues caused by component installation and extending the fixture's lifespan. Furthermore, the fixture is highly versatile and can be used in automated multi-machine and multi-station applications.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamping fixture, characterized in that, The device includes a tray with an installation area and a positioning area surrounding the installation area. The installation area has several installation holes for receiving products to be processed, and the installation holes penetrate the upper and lower surfaces of the tray, with a support portion for supporting the products to be processed within the installation holes. The positioning area has a guide sleeve through hole penetrating the upper and lower surfaces of the tray for CCD camera alignment detection, a positioning post fixed to the upper surface of the tray, and a slot on the lower surface of the tray corresponding to the positioning post. The positioning post is integrally formed with the tray, and the height of the positioning post is less than half the thickness of the tray, and the height of the positioning post is adapted to the depth of the slot. When trays are stacked, the positioning post is inserted into the slot of the adjacent tray.

2. The clamping fixture according to claim 1, characterized in that, The distance from the support to the upper surface of the tray is greater than the distance from the support to the lower surface of the tray.

3. The clamping fixture according to claim 1, characterized in that, Both the upper and lower surfaces of the support are planar.

4. The clamping fixture according to claim 1, characterized in that, The support portion is a ring-shaped structure that protrudes from the inner surface of the mounting hole.

5. The clamping fixture according to claim 1, characterized in that, The support portion includes a plurality of protrusions arranged at intervals and in a ring on the inner surface of the mounting hole, and the protrusions are fixedly connected to the inner wall of the mounting hole.

6. The clamping fixture according to claim 1, characterized in that, The lower surface of the tray is provided with a flared hole that corresponds to and communicates with the guide sleeve through hole. The flared hole is coaxial with the guide sleeve through hole, and the diameter of the flared hole at the end adjacent to the guide sleeve through hole is smaller than the diameter of the flared hole at the end away from the guide sleeve through hole.

7. The clamping fixture according to claim 1, characterized in that, The end of the positioning post facing away from the slot has a chamfer.

8. The clamping fixture according to claim 1, characterized in that, The lower surface of the tray has at least two oppositely arranged notches at the corresponding positioning area, and the notches penetrate the side of the tray to form an insertion interface.

9. The clamping fixture according to claim 8, characterized in that, The upper surface of the material tray has at least two oppositely arranged clearance grooves at the corresponding positioning area. The clearance grooves penetrate the side of the material tray, and the distance from the clearance groove to the middle of the installation area is less than the distance from the notch below the clearance groove to the middle of the installation area.

10. The clamping fixture according to claim 9, characterized in that, The dimension of the clearance groove along the thickness direction of the material tray is smaller than the dimension of the notch along the thickness direction of the material tray, and the sum of the dimensions of the clearance groove and the notch along the thickness direction of the material tray is less than the thickness of the material tray.

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