Flow transfer positioning jig and automatic assembly system

Abstract

The utility model discloses a kind of flow positioning fixture and automatic assembly system, it is related to positioning fixture technical field, the flow positioning fixture includes jig main body, jig main body is equipped with product containing groove, product containing groove is equipped with the first side wall of the first direction one side with product edge adaptation, the other side is equipped with first through hole, product containing groove is equipped with the second side wall of the second direction one side with product edge adaptation, the other side is equipped with second through hole;First through hole and second through hole are all equipped with the clamping jaw for clamping the product, clamping jaw includes the clamping part of being equipped in first through hole and second through hole and the driving part located below clamping part, rotating shaft is equipped at the junction of clamping part and driving part, the part of clamping part contact product is equipped with buffer pad.The flow positioning fixture and automatic assembly system of the utility model can firmly fix product and not damage product appearance.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a transfer positioning fixture and automatic assembly system. Background Technology

[0002] With socio-economic development and consumption upgrades, consumers have higher requirements for the appearance of the electronic products they purchase, such as no misaligned seams, burrs, or unevenness. This places higher demands on the fixtures used in the electronic product assembly line process, ensuring that the products are fixed in place without damaging their appearance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a transfer positioning fixture and automatic assembly system that is firmly fixed without damaging the appearance of the product.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: On one hand, this utility model embodiment provides a transfer positioning fixture, including a fixture body, a product receiving groove on the fixture body, a first sidewall adapted to the edge of the product on one side in a first direction, and a first through hole on the other side, the product receiving groove a second sidewall adapted to the edge of the product on one side in a second direction, and a second through hole on the other side, the first direction and the second direction being arranged at an angle; Both the first and second through holes are provided with grippers for clamping the product. Each gripper includes a clamping part that passes through the first and second through holes and a driving part located below the clamping part. A rotating shaft is provided at the connection between the clamping part and the driving part. A buffer pad is provided at the part of the clamping part that contacts the product.

[0005] In some embodiments of this utility model, the main body of the fixture is provided with a gripper mounting groove below the first through hole and the second through hole, and the gripper mounting groove is provided with a set screw for fixing the rotating shaft.

[0006] In some embodiments of this utility model, the clamping part and the driving part are perpendicular to each other, and a spring mounting groove is provided on the side of the gripper mounting groove near the product receiving groove. A spring is installed in the spring mounting groove, the upper end of the spring abuts against the bottom surface of the spring mounting groove, and the lower end of the spring abuts against the upper surface of the driving part.

[0007] In some embodiments of this utility model, the first direction and the second direction are perpendicular to each other; And / or, the product receiving slot is provided with a clearance slot around its perimeter; And / or, the lower surface of the drive unit is provided with a push protrusion; And / or, the side wall of the spring mounting groove away from the gripper mounting groove is used as a limiting part that cooperates with the drive part.

[0008] In some embodiments of this utility model, the gripper is made of hard plastic, the buffer pad is made of elastic plastic, and the gripper and the buffer pad are formed into an integral structure by secondary injection molding.

[0009] In some embodiments of this utility model, the gripper is made of heat-resistant PEI or room-temperature PC; And / or, the cushioning pad is made of TPU, silicone or rubber.

[0010] In some embodiments of this utility model, a rotating shaft mounting hole is provided at the connection between the clamping part and the driving part. The rotating shaft is fixed in the rotating shaft mounting hole. The upper end face of the set screw is a convex arc surface, and the mating part between the rotating shaft and the set screw is a concave arc surface. The radius of the concave arc surface is greater than the radius of the convex arc surface.

[0011] On the other hand, this utility model embodiment provides an automatic assembly system, including an assembly station, a robotic arm and a conveyor belt, wherein the conveyor belt is provided with the aforementioned transfer positioning fixture.

[0012] In some embodiments of this utility model, the periphery of the transfer positioning fixture is provided with positioning holes, and the assembly station is provided with positioning pins that cooperate with the positioning holes. And / or, the assembly station is provided with a push rod for driving the drive unit.

[0013] In some embodiments of this utility model, the transfer positioning fixture is provided with at least two product receiving slots, each product receiving slot is provided with an optical mark around its periphery, and the robotic arm is provided with an optical sensor for identifying the optical mark to determine the position of the product receiving slot.

[0014] This utility model has the following beneficial effects: The present invention relates to a flow positioning fixture and automatic assembly system, comprising a fixture body with a product receiving groove. The product receiving groove has a first sidewall adapted to the edge of the product on one side in a first direction and a first through hole on the other side. The product receiving groove has a second sidewall adapted to the edge of the product on one side in a second direction and a second through hole on the other side. Grippers for clamping the product are inserted in both the first and second through holes. In this way, the product can be pushed onto the opposite dead positioning structure by the lateral thrust generated by the grippers. The overall structure is similar to "surface contact + point contact", where the first and second sidewalls achieve surface contact and the grippers achieve point contact, thereby achieving product clamping and ensuring that the product does not come out during the flow of the flexible line. Specifically, the two grippers extending from the first and second through holes can simultaneously apply clamping force to the diagonal edge of the product from two directions (the first and second directions), generating a concentrated and balanced clamping force to stably press the product onto the positioning sidewalls (the first and second sidewalls), preventing it from shifting or coming out during the flow or operation.

[0015] Furthermore, the gripper includes a clamping part passing through the first and second through holes and a driving part located below the clamping part. A rotating shaft is provided at the connection between the clamping part and the driving part, and a buffer pad is provided at the part of the clamping part that contacts the product. In this way, the gripper contacts the surface or edge of the product to be positioned through the elastic part (buffer pad), avoiding the impact on the product during the clamping process and the friction caused by vibration during the flow positioning fixture. This effectively avoids appearance defects such as bright spots and scratches at the contact points between the gripper and the product structure. In addition, when the elastic part of the gripper contacts the edge of the product, because the hardness of the elastic material is lower than that of the product, the elastic material will undergo slight deformation along the contact point with the product, better wrapping the edge of the product and thus providing a better downward force. This improves the appearance of the product while ensuring that the product is better locked in the flow positioning fixture. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a top view of the transfer positioning fixture according to an embodiment of the present utility model; Figure 2 This is a bottom view of the transfer positioning fixture according to an embodiment of the present utility model; Figure 3 for Figure 1 sectional views, where (a) is a sectional view in one direction and (b) is a sectional view in another direction; Figure 4 for Figure 1 Three-dimensional structural diagram of the middle gripper; Figure 5This is a diagram illustrating the fit between the set screw and the rotating shaft in an improved embodiment.

[0017] Figure label: 100. Circulation positioning fixture, 10. Main body of the fixture, 1. Product receiving groove; 11. First side wall; 12. First through hole; 13. Second side wall; 14. Second through hole; 15. Clearance groove; 16. Positioning hole. 2. Clamping jaws; 21. Clamping part; 22. Drive part; 221. Pushing protrusion; 23. Rotating shaft; 231. Concave arc surface; 24. Set screw; 241. Convex arc surface; 25. Rotating shaft mounting hole. 3. Cushioning pad, 4. Gripper mounting slot, 5. Spring mounting slot; 51. Spring; 52. Side wall. X, the first direction; Y, the second direction. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] On the one hand, this utility model embodiment provides a transfer positioning fixture 100, such as Figure 1-5 As shown, the fixture includes a main body 10, on which a product receiving groove 1 is provided. The product receiving groove 1 has a first sidewall 11 adapted to the edge of the product (not shown) on one side in a first direction, and a first through hole 12 on the other side. The product receiving groove 1 has a second sidewall 13 adapted to the edge of the product on one side in a second direction, and a second through hole 14 on the other side. The first direction and the second direction are set at an angle. In the embodiment shown in the figure, the first direction (X-axis direction) and the second direction (Y-axis direction) can be perpendicular to each other, so that the product can be fixed more stably. Both the first through hole 12 and the second through hole 14 are provided with grippers 2 for clamping the product. The gripper 2 includes a clamping part 21 that passes through the first through hole 12 and the second through hole 14 and a driving part 22 located below the clamping part 21. A rotating shaft 23 is provided at the connection between the clamping part 21 and the driving part 22. A buffer pad 3 is provided at the part of the clamping part 21 that contacts the product (i.e., the inner surface).

[0020] In use, firstly, the driving part 22 of the gripper 2 is driven to open the clamping part 21 outward. Then, the product angle is adjusted according to the product receiving groove 1 and the product is placed into the product receiving groove 1. Finally, the driving part 22 is driven to make the clamping part 21 contact the product inward. At this time, the side wall of the product is tightly attached to the first side wall 11 and the second side wall 13 of the product receiving groove 1, and the clamping part 21 fixes the product in the product receiving groove 1. In this utility model, the product can be various types of products, such as an earphone shell, or a receiver module or speaker module in a mobile phone.

[0021] The transfer positioning fixture 100 of this utility model embodiment includes a fixture body 10, on which a product receiving groove 1 is provided. The product receiving groove 1 has a first sidewall 11 adapted to the edge of the product on one side in a first direction, and a first through hole 12 on the other side. The product receiving groove 1 has a second sidewall 13 adapted to the edge of the product on one side in a second direction, and a second through hole 14 on the other side. Grippers 2 for clamping the product are inserted into both the first through hole 12 and the second through hole 14. In this way, the lateral thrust generated by the grippers 2 can push the product onto the opposing dead positioning structure, which is similar to a "face-to-face" connection. The "touch + point contact" method achieves surface contact at the first sidewall 11 and the second sidewall 13, and point contact at the gripper 2, thereby clamping the product and ensuring that the product does not come out during the flow of the flexible line. Specifically, the two grippers 2 extending from the first through hole 12 and the second through hole 14 can apply clamping force to the diagonal edge of the product from two directions (first direction X and second direction Y) at the same time, which can generate a concentrated and balanced clamping force to stably press the product onto the positioning sidewall (first sidewall 11 and second sidewall 13) and prevent it from shifting or coming out during the flow or operation.

[0022] Furthermore, the gripper 2 includes a clamping part 21 passing through the first through hole 12 and the second through hole 14, and a driving part 22 located below the clamping part 21. A rotating shaft 23 is provided at the connection between the clamping part 21 and the driving part 22. A buffer pad 3 is provided at the part of the clamping part 21 that contacts the product. In this way, the gripper 2 contacts the surface or edge of the product to be positioned through the elastic part (buffer pad 3), avoiding the impact on the product during the clamping process of the gripper 2, as well as the friction caused by the vibration during the flow positioning fixture 100. This effectively avoids appearance defects such as bright spots and scratches at the contact part between the gripper 2 and the product structure. In addition, when the elastic part of the gripper contacts the edge of the product, because the hardness of the elastic material is lower than that of the product, the elastic material will undergo slight deformation along the part that contacts the product, better wrapping the edge of the product, and thus providing a better downward component force. This improves the appearance of the product and ensures that the product is better locked in the flow positioning fixture 100.

[0023] In some embodiments of this utility model, the fixture body 10 may be provided with gripper mounting grooves 4 below the first through hole 12 and the second through hole 14, and the gripper mounting grooves 4 are provided with set screws 24 for fixing the rotating shaft 23. During installation, the gripper 2 with the rotating shaft 23 is inserted into the gripper mounting groove 4 from bottom to top until the clamping part 21 passes through the first through hole 12 and the second through hole 14, and then the set screws 24 are installed into the gripper mounting grooves 4 to fix the rotating shaft 23. In specific implementations, there may be at least two set screws 24, which may be installed on both sides of the gripper 2, or in the embodiment shown in the figure, the set screws 24 may be installed on the same side of the gripper 2. In this way, the rotating shaft 23 can be firmly fixed, and installation is also convenient.

[0024] In some embodiments of this utility model, the clamping part 21 and the driving part 22 can be perpendicular to each other (i.e., the gripper is L-shaped). A spring mounting groove 5 is provided on the side of the gripper mounting groove 4 near the product receiving groove 1. A spring 51 is installed in the spring mounting groove 5, with the upper end of the spring 51 abutting against the bottom surface of the spring mounting groove 5 and the lower end of the spring 51 abutting against the upper surface of the driving part 22. In this way, the restoring force of the spring 51 allows the clamping part 21 to automatically return to its original position and clamp the product, eliminating the need for additional drive components such as motors and cylinders, simplifying the structure and reducing costs. It is understood that the gripper 2 can also provide lateral thrust through hydraulic, pneumatic, or other driving methods.

[0025] In some embodiments of this utility model, a clearance groove 15 may be provided around the product receiving groove 1. The clearance groove 15 can provide clearance space during the assembly of parts on the product base plate, making it convenient to use.

[0026] In some embodiments of this utility model, the lower surface of the drive unit 22 may be provided with a pushing protrusion 221. The pushing protrusion 221 can cooperate with the drive member to push, reducing the driving stroke of the drive member while ensuring that the drive member can drive the drive unit 22 to move (open outward). The side wall 52 of the spring mounting groove 5 away from the gripper mounting groove 4 can be used as a limiting part that cooperates with the drive unit 22. In this way, the stroke of the drive unit 22 can be reduced, thereby reducing the stroke of the clamping part 21, reducing the rebound force, ensuring that the product appearance is not damaged, and avoiding over-compression of the spring 51, thus ensuring the service life of the spring 51.

[0027] In some embodiments of this utility model, the gripper 2 can be made of rigid plastic, and the buffer pad 3 can be made of elastic plastic. The gripper 2 and the buffer pad 3 are integrally formed by two-stage injection molding. This embodiment adopts the design concept of two-stage injection molding, that is, the gripper 2 (clamping part 21 and driving part 22) of rigid material is injected once, and the elastic plastic (buffer pad 3) is injected twice. The gripper 2 of rigid material can ensure that the structure does not deform when subjected to the elastic force of spring 51, and can rotate smoothly around the rotating axis 23. The part in contact with the product is made of elastic material. By using injection molding materials of different hardness, the softness of the product contact is met. After the product is pushed, the elastic plastic absorbs the pushing force through elastic deformation, thereby avoiding the product from being indented or scratched at the contact part. Moreover, different materials of gripper 2 and buffer pad 3 can be selected according to the specific use environment of the flow positioning fixture. One mold can meet multiple needs and save manufacturing costs.

[0028] In practice, the gripper 2 can be made of heat-resistant PEI (Polyetherimide) or room-temperature PC (Polycarbonate), etc.; the cushioning pad 3 can be made of TPU (Thermoplastic Polyurethane), silicone, or rubber, etc. The manufacturing process of gripper 2 and cushioning pad 3 using the above materials is simple, highly automated, and has a certain cost advantage. In addition, gripper 2 can also be made of metal or other materials, formed through machining.

[0029] In an improved embodiment of this utility model, such as Figure 5 As shown, a rotating shaft mounting hole 25 can be provided at the connection between the clamping part 21 and the driving part 22. The rotating shaft 23 is fixed in the rotating shaft mounting hole 25. The upper end surface of the set screw 24 is a convex arc surface 241, and the mating part between the rotating shaft 23 and the set screw 24 is a concave arc surface 231. The radius of the concave arc surface 231 is larger than the radius of the convex arc surface 241. In this way, the convex arc surface 241 of the set screw 24 and the concave arc surface 231 of the rotating shaft 23 cooperate, so that the rotating shaft 23 can only rotate within a certain range (such as ±10 degrees) to the left and right, thereby limiting the swing amplitude of the gripper 2 and further preventing the gripper 3 from excessively squeezing the product instantaneously under the action of the spring rebound force, which would cause scratches on the product appearance.

[0030] On the other hand, this utility model embodiment provides an automatic assembly system, including an assembly station, a robotic arm, and a conveyor belt (all not shown), on which the aforementioned transfer positioning fixture 100 is provided. The structure of the transfer positioning fixture 100 is the same as above, and will not be described again here.

[0031] The automatic assembly system of this utility model embodiment includes an assembly station, a robotic arm, and a conveyor belt. The conveyor belt is equipped with the aforementioned transfer positioning fixture 100. The transfer positioning fixture 100 includes a fixture body 10, on which a product receiving groove 1 is provided. The product receiving groove 1 has a first sidewall 11 adapted to the edge of the product on one side in a first direction, and a first through hole 12 on the other side. The product receiving groove 1 has a second sidewall 13 adapted to the edge of the product on one side in a second direction, and a second through hole 14 on the other side. Grippers 2 for clamping the product are inserted into both the first through hole 12 and the second through hole 14. Thus, the grippers 2 can generate a lateral thrust to clamp the product. The product is pushed onto the opposing dead positioning structure, which is similar to "surface contact + point contact". The first sidewall 11 and the second sidewall 13 achieve surface contact, and the gripper 2 achieves point contact. This is to achieve clamping of the product and ensure that the product does not come out during the flow of the flexible line. Specifically, the two grippers 2 extending from the first through hole 12 and the second through hole 14 can apply clamping force to the diagonal edge of the product from two directions (first direction X and second direction Y) at the same time. This can generate a concentrated and balanced clamping force, which stably presses the product onto the positioning sidewall (first sidewall 11 and second sidewall 13) to prevent it from shifting or coming out during the flow or operation.

[0032] Furthermore, the gripper 2 includes a clamping part 21 passing through the first through hole 12 and the second through hole 14, and a driving part 22 located below the clamping part 21. A rotating shaft 23 is provided at the connection between the clamping part 21 and the driving part 22. A buffer pad 3 is provided at the part of the clamping part 21 that contacts the product. In this way, the gripper 2 contacts the surface or edge of the product to be positioned through the elastic part (buffer pad 3), avoiding the impact on the product during the clamping process of the gripper 2, as well as the friction caused by the vibration during the flow positioning fixture 100. This effectively avoids appearance defects such as bright spots and scratches at the contact part between the gripper 2 and the product structure. In addition, when the elastic part of the gripper contacts the edge of the product, because the hardness of the elastic material is lower than that of the product, the elastic material will undergo slight deformation along the part that contacts the product, better wrapping the edge of the product, and thus providing a better downward component force. This improves the appearance of the product and ensures that the product is better locked in the flow positioning fixture 100.

[0033] In some embodiments of this utility model, the periphery of the transfer positioning fixture 100 may be provided with positioning holes 16, and the assembly station is provided with positioning pins (not shown) that cooperate with the positioning holes 16. In this way, the transfer positioning fixture 100 can be firmly fixed on the assembly station, which facilitates subsequent processing of the product.

[0034] In some embodiments of this utility model, a push rod (not shown) for driving the drive unit 22 may be provided on the assembly station. In specific implementation, after the transfer positioning fixture 100 is fixed at the assembly station, a push rod is correspondingly provided below the drive unit 22 to realize automated production.

[0035] In some embodiments of this utility model, the transfer positioning fixture 100 may be provided with at least two product receiving slots 1, and each product receiving slot 1 has an optical mark around its perimeter. The optical mark can be a QR code, a light spot, or a marker of different colors, etc. The robotic arm is provided with an optical sensor for identifying the optical mark to determine the position of the product receiving slot 1. In this way, after the optical sensor on the robotic arm identifies the optical mark, it can accurately identify the position of each product receiving slot 1, which can improve production efficiency. In the embodiment shown in the figure, the transfer positioning fixture 100 is provided with four product receiving slots 1.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flow transfer positioning jig characterized by, The fixture includes a main body, on which a product receiving groove is provided. The product receiving groove has a first sidewall adapted to the edge of the product on one side in a first direction and a first through hole on the other side. The product receiving groove has a second sidewall adapted to the edge of the product on one side in a second direction and a second through hole on the other side. The first direction and the second direction are arranged at an angle. Both the first and second through holes are provided with grippers for clamping the product. Each gripper includes a clamping part that passes through the first and second through holes and a driving part located below the clamping part. A rotating shaft is provided at the connection between the clamping part and the driving part. A buffer pad is provided at the part of the clamping part that contacts the product.

2. The flow indexing fixture of claim 1, wherein, The fixture body is provided with a gripper mounting groove below the first through hole and the second through hole, and a set screw for fixing the rotating shaft is provided in the gripper mounting groove.

3. The transfer positioning fixture according to claim 2, characterized in that, The clamping part and the driving part are perpendicular to each other. A spring mounting groove is provided on the side of the gripper mounting groove near the product receiving groove. A spring is installed in the spring mounting groove. The upper end of the spring abuts against the bottom surface of the spring mounting groove, and the lower end of the spring abuts against the upper surface of the driving part.

4. The flow indexing fixture of claim 3, wherein, The first direction and the second direction are perpendicular; And / or, the product receiving slot is provided with a clearance slot around its perimeter; And / or, the lower surface of the drive unit is provided with a push protrusion; And / or, the side wall of the spring mounting groove away from the gripper mounting groove is used as a limiting part that cooperates with the drive part.

5. The flow indexing fixture of claim 1, wherein, The gripper is made of hard plastic, and the buffer pad is made of elastic plastic. The gripper and the buffer pad are formed into an integral structure by secondary injection molding.

6. The flow indexing fixture of claim 5, wherein, The gripper is made of heat-resistant PEI or room-temperature PC. And / or, the cushioning pad is made of TPU, silicone or rubber.

7. The flow indexing fixture of claim 2, wherein, The connection between the clamping part and the driving part is provided with a rotating shaft mounting hole. The rotating shaft is fixed in the rotating shaft mounting hole. The upper end face of the set screw is a convex arc surface, and the mating part between the rotating shaft and the set screw is a concave arc surface. The radius of the concave arc surface is greater than the radius of the convex arc surface.

8. An automated assembly system comprising an assembly station, a robotic arm and a conveyor belt, characterized in that, The conveyor belt is provided with a transfer positioning fixture as described in any one of claims 1-7.

9. The automatic assembly system according to claim 8, characterized in that, The peripheral area of ​​the transfer positioning fixture is provided with positioning holes, and the assembly station is provided with positioning pins that cooperate with the positioning holes. And / or, the assembly station is provided with a push rod for driving the drive unit.

10. The automatic assembly system of claim 9, wherein, The transfer positioning fixture is provided with at least two product receiving slots, and each product receiving slot is provided with an optical mark around its perimeter. The robotic arm is provided with an optical sensor for identifying the optical mark to determine the position of the product receiving slot.

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