A tooling fixture using internal cavity clamping and positioning

Abstract

This application relates to a tooling fixture with internal cavity clamping and positioning, belonging to the technical field of tooling fixtures. The tooling fixture includes a base and a clamping mechanism. The clamping mechanism includes: a mounting base disposed on the base; multiple clamping blocks slidably disposed on the base, which, when the plastic shell is placed on the base, abut against the mounting base for positioning and such that the multiple clamping blocks are located inside the internal cavity of the plastic shell; and a moving component for driving the multiple clamping blocks to move, thereby clamping and positioning the multiple clamping blocks against the internal cavity of the plastic shell or releasing them from the plastic shell. This application achieves positioning by the outer wall of the plastic shell abutting against the mounting base, and the moving component drives the multiple clamping blocks to press against the internal cavity of the plastic shell for positioning, thus improving the quality of the plastic shell itself and after assembly.

Description

Technical Field

[0001] This application relates to the technical field of tooling fixtures, and in particular to a tooling fixture that uses internal cavity clamping and positioning. Background Technology

[0002] Adhesives are primarily used in plastic housings to secure internal components for assembly, provide electrical insulation between electronic components, and enhance structural stability. Because plastic housings involve numerous components, adhesives of varying sizes are typically applied using robotic arms. Compared to manual application, robotic arms offer greater accuracy, efficiency, and reliability in terms of quality.

[0003] However, in the actual application process, some plastic shells, such as frame-like structures, need to be clamped and fixed before the adhesive is applied. Because the plastic shell is thin, its strength is low. During the clamping process of the outer wall of the plastic shell, it is easy to be squeezed and deformed, which leads to a decrease in the quality of the plastic shell and the subsequent application accuracy, thus reducing the quality of the plastic shell itself and the assembled quality. Summary of the Invention

[0004] To improve the quality of the plastic casing itself and after assembly, this application provides a tooling fixture with internal cavity clamping and positioning.

[0005] This application provides a tooling fixture with internal cavity clamping and positioning, which adopts the following technical solution:

[0006] A tooling fixture employing internal cavity clamping and positioning includes a base and a clamping mechanism disposed on the base, the clamping mechanism comprising:

[0007] Mounting base, set on the base;

[0008] Multiple clamping blocks are slidably mounted on the base. When the plastic shell is placed on the base, it abuts against the mounting base for positioning and so that the multiple clamping blocks are located inside the inner cavity of the plastic shell.

[0009] A moving component is used to drive multiple clamping blocks to move and cause the multiple clamping blocks to clamp and position themselves within the plastic housing cavity or to release their clamping from the plastic housing.

[0010] By adopting the above technical solution, the robotic arm places the plastic shell onto the base, and positions the outer wall of the plastic shell against the mounting seat. The moving component drives multiple clamping blocks to move and press against the inner cavity of the plastic shell for positioning. Through the correspondence between the mounting seat and the clamping blocks, the plastic shell can be effectively clamped, while also reducing the probability of deformation of the plastic shell, thereby improving the quality of the plastic shell itself and after assembly.

[0011] Meanwhile, the plastic shell has good annular compressive stiffness. Compared with clamping the outer wall of the plastic shell, clamping the inner cavity of the plastic shell can further reduce the risk of deformation of the plastic shell and further improve the quality of the plastic shell itself and after assembly.

[0012] Optionally, the mounting base is slidably disposed on the base and multiple mounting bases are provided, with multiple mounting bases and multiple clamping blocks corresponding to each other and clamping multiple side walls of the plastic shell; multiple moving components are provided and are used to drive multiple mounting bases to move closer or further away from each other and to drive multiple clamping blocks to move closer or further away from each other.

[0013] By adopting the above technical solution, the robotic arm places the plastic shell onto the base. The moving component drives multiple mounting seats to approach each other and press against the outer wall of the plastic shell for positioning. Then, the moving component drives multiple clamping blocks to move away from each other, so that the multiple clamping blocks press against the inner cavity of the plastic shell for positioning. This can greatly reduce the risk of the plastic shell not being properly clamped due to jamming between the plastic shell and the mounting seats during placement, further improving the clamping accuracy, improving the quality of the plastic shell itself and after assembly, and at the same time, it can adapt to the clamping of more plastic shells of different sizes, thus increasing the adaptability of the tooling fixture.

[0014] Optionally, the moving component includes:

[0015] Movable component one and movable component two are used to drive the mounting base and clamping block to move, respectively;

[0016] Pressure detector 1 is mounted on the mounting base and is used to detect the force exerted by the mounting base on the plastic shell and is electrically connected to moving part 1.

[0017] Pressure detector 2 is mounted on the clamping block and is used to detect the force exerted by the clamping block on the plastic shell and is electrically connected to moving part 2.

[0018] After the plastic shell is placed on the base, multiple moving parts 1 are simultaneously activated to drive multiple mounting seats to press against the outer surface of the plastic shell. Then, the moving parts 2 drive multiple clamping blocks to press against the inner cavity of the plastic shell for positioning. When it is necessary to unlock the plastic shell, the moving parts 1 and 2 are simultaneously activated to drive the mounting seats and clamping blocks away from the plastic shell.

[0019] By adopting the above technical solution, the first moving part drives multiple mounting seats to approach each other and press against the plastic shell for positioning. The first pressure detector detects the clamping force. Similarly, the second moving part drives multiple clamping blocks to move away from each other and press against the inner cavity of the plastic shell for positioning. The second pressure detector detects the clamping force, which makes the clamping force on multiple parts of the plastic shell appropriate, reduces the risk of damage due to excessive force on the plastic shell, and improves the quality of the plastic shell itself and after assembly.

[0020] Optionally, the clamping block is provided with a pressing component, and a mounting groove is formed on the side wall of the clamping block near the mounting base; the pressing component includes:

[0021] The pressure block is rotatably mounted on the clamping block at its top and extends into the mounting groove at its bottom.

[0022] The elastic element is installed in the mounting groove and at the bottom of the pressure block;

[0023] In the initial state, the elastic element pushes the pressing block close to the side wall of the mounting base and extends it out of the mounting groove in a vertical state; when the clamping block approaches the inner cavity of the plastic shell, the pressing block first contacts the inner cavity of the plastic shell and causes the bottom end to rotate toward the mounting groove. When the clamping block is clamped on the inner cavity of the plastic shell for positioning, the pressing block rotates to an inclined state and exerts downward pressure on the plastic shell.

[0024] By adopting the above technical solution, the clamping block drives the pressing component close to the inner cavity of the plastic shell. The pressing block first contacts the inner cavity of the plastic shell. After being squeezed, the bottom end of the pressing block rotates towards the mounting groove and forms an inclined state. The pressing block generates downward pressure on the plastic shell to prevent the plastic shell from moving upward until both the clamping block and the pressing block press against the inner cavity of the plastic shell for positioning. The pressing block generates downward pressure on the plastic shell, and the clamping block generates horizontal clamping force on the plastic shell. By combining pressure and clamping force to clamp the plastic shell, the positioning effect of the plastic shell can be improved, that is, the force of the clamping block and the pressing block can be reduced accordingly. Therefore, the risk of deformation and displacement of the plastic shell is further reduced, and the quality of the plastic shell itself and after assembly is improved.

[0025] Compared to positioning the plastic casing using a pressure plate, the combination of the clamping block and the pressing block in this application allows the pressing block to tilt and press against the plastic casing simply by moving the clamping block. This application does not require additional drive, and the pressing block can greatly reduce the obstruction of the plastic casing, thus reducing the adverse effects on the plastic casing during operation.

[0026] Optionally, a rotating seat is rotatably mounted on the mounting groove, and both ends of the elastic element are connected to the pressing block and the rotating seat.

[0027] By adopting the above technical solution, the pressure block rotates to squeeze the elastic element and drives it to rotate. The rotation of the elastic element drives the rotating seat to rotate to make way, thereby making the pressure block more stable during operation and improving the quality of the plastic shell itself and after assembly.

[0028] Optionally, both the pressing block and the rotating seat are provided with guide posts, and the two ends of the elastic element press against the pressing block and the rotating seat and are respectively sleeved on the two guide posts for positioning.

[0029] By adopting the above technical solution, the guide post can position the elastic element, so that both ends of the elastic element can be pressed against the pressing block and the rotating seat, which facilitates the replacement of the elastic element.

[0030] Optionally, it also includes a first adsorption mechanism disposed on the clamping block and a second adsorption mechanism disposed on the base. When the clamping block is clamped on the inner cavity of the plastic shell, the first adsorption mechanism and the second adsorption mechanism are respectively adsorbed on the inner cavity and the lower surface of the plastic shell for positioning.

[0031] By adopting the above technical solution, the robotic arm places the plastic shell onto the base. Multiple mounting seats approach each other to clamp and position the outer wall of the plastic shell. The robotic arm detaches from the plastic shell, and the second adsorption mechanism adsorbs onto the lower surface of the plastic shell for positioning. As multiple clamping blocks press against the inner cavity of the plastic shell, the clamping blocks rotate to an inclined state and exert downward pressure on the plastic shell, making the adsorption and positioning effect of the second adsorption mechanism on the plastic shell better. At the same time, the clamping blocks press against the inner cavity of the plastic shell, and the movement of the clamping blocks also drives the first adsorption mechanism to adsorb onto the inner cavity of the plastic shell for positioning, thereby further improving the clamping and positioning effect, further reducing the force on the plastic shell, and improving the quality of the plastic shell itself and after assembly.

[0032] Simultaneously, when the clamping block moves away from the plastic shell, the first and second adsorption mechanisms unlock, and the pressing block, under the elastic force of the elastic element, also makes it easier for the plastic shell to detach from the first and second adsorption mechanisms, further improving the stability during the clamping process.

[0033] Optionally, the first adsorption mechanism includes:

[0034] Multiple suction cups are mounted on the clamping block;

[0035] A control component controls the connection or disconnection of multiple suction cups with the outside world; when the clamping block is pressed against the inner cavity of the plastic shell for positioning, the control component controls the suction cups to disconnect from the outside world and realizes the suction cups adsorbed on the inner cavity of the plastic shell for positioning; when the clamping block is away from the plastic shell, the control component controls the suction cups to connect with the outside world and facilitates the detachment of the suction cups from the plastic shell.

[0036] By adopting the above technical solution, the control component drives multiple suction cups to communicate with the outside world, and the clamping block drives multiple suction cups to approach the inner cavity of the plastic shell at the same time. When the clamping block presses against the inner cavity of the plastic shell for positioning, multiple suction cups press against the plastic shell and expel air. The control component controls the suction cups to disconnect from the outside world, so that the suction cups are attached to the plastic shell for positioning.

[0037] The clamping block drives multiple suction cups away from the plastic shell, while the control component keeps the suction cups connected to the outside environment, thus facilitating the detachment of the suction cups from the plastic shell. Simultaneously, the pressing block...

[0038] The elastic force of the elastic element also pushes multiple suction cups to detach from the plastic shell, making the clamping process more stable.

[0039] Optionally, the control component includes:

[0040] The sealing seat is installed inside the mounting slot;

[0041] The control tube is connected to the sealing seat and the suction cup. In the initial state, the pressure block is detached from the sealing seat, allowing the air in the suction cup to be discharged through the sealing seat. When the clamping block presses against the inner cavity of the plastic shell and the pressure block is tilted, the pressure block presses against the sealing seat to achieve a seal and disconnects the suction cup from the outside.

[0042] By adopting the above technical solution, in the initial state, the pressing block is vertical and detached from the sealing seat, so that the suction cup is connected to the outside. The clamping block drives multiple suction cups and the pressing block to approach the plastic shell. The plastic shell pushes the pressing block to approach the sealing seat. When multiple suction cups and the clamping block press against the plastic shell, the pressing block also presses against the sealing seat to achieve sealing, so that multiple suction cups are disconnected from the outside.

[0043] The clamping block drives multiple suction cups and abutting blocks away from the plastic shell. Under the elastic force of the elastic element, the abutting block moves away from the sealing seat. The multiple suction cups are soft disks that can be stretched by a small pulling force. When the abutting block is separated from the sealing seat, the multiple suction cups can communicate with the outside world and then separate from the plastic shell. The abutting block can automatically disconnect or seal multiple suction cups, making the structure simple and stable and improving the stability of the tooling clamping process.

[0044] Optionally, the sealing seat is made of an elastic material.

[0045] By adopting the above technical solution, it is easier to press against the pressure block, thus improving the sealing effect.

[0046] In summary, this application includes at least one of the following beneficial technical effects:

[0047] 1. A robotic arm places the plastic shell onto the base, positioning the outer wall of the plastic shell against the mounting base. The moving component drives multiple clamping blocks to move and press against the inner cavity of the plastic shell for positioning. The corresponding mounting base and clamping blocks enable effective clamping of the plastic shell, reducing the probability of deformation and improving the quality of the plastic shell itself and after assembly.

[0048] 2. The pressure block presses down on the plastic shell to prevent it from moving upwards, while the clamping block applies a horizontal clamping force to the plastic shell. The combination of pressure and clamping force improves the positioning effect of the plastic shell, thereby reducing the force exerted by the clamping block and the pressure block. This further reduces the risk of deformation and displacement of the plastic shell, improving the quality of the plastic shell itself and after assembly.

[0049] 3. A robotic arm places the plastic shell onto the base. Multiple mounting seats clamp and position the outer wall of the plastic shell. A second adsorption mechanism adsorbs onto the lower surface of the plastic shell for positioning. As multiple clamping blocks press against the inner cavity of the plastic shell, the clamping blocks tilt and exert downward pressure on the plastic shell, improving the adsorption and positioning effect of the second adsorption mechanism. Simultaneously, the clamping blocks press against the inner cavity of the plastic shell, and their movement also causes the first adsorption mechanism to adsorb onto the inner cavity of the plastic shell for positioning. This further improves the clamping and positioning effect, thereby reducing the force on the plastic shell and improving the quality of the plastic shell itself and after assembly. Attached Figure Description

[0050] Figure 1 This is a three-dimensional structural diagram of the tooling fixture;

[0051] Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0052] Figure 3 This is a partial structural diagram of the tooling fixture, showing the clamping mechanism and pressing components not in contact with the plastic housing.

[0053] Figure 4 yes Figure 2 Enlarged schematic diagram of section B.

[0054] Reference numerals: 1. Base; 11. Mounting hole; 2. Clamping mechanism; 21. Mounting seat; 22. Clamping block; 23. Mounting groove; 3. Moving assembly; 31. Moving part one; 32. Moving part two; 33. Pressure detector one; 34. Pressure detector two; 35. Rod one; 36. Rod two; 37. Receiving groove one; 38. Receiving groove two; 4. Pressing assembly; 41. Pressing block; 42. Elastic element; 43. Rotating shaft; 44. Rotating seat; 45. Guide column; 5. First adsorption mechanism; 51. Suction cup; 52. Adsorption groove; 6. Control assembly; 61. Sealing seat; 62. Control tube; 7. Plastic shell; 8. Second adsorption mechanism. Detailed Implementation

[0055] The following provides a further detailed description of this application.

[0056] This application discloses a tooling fixture that uses internal cavity clamping for positioning.

[0057] Reference Figure 1 The tooling fixture with internal clamping and positioning includes a base 1 and a clamping mechanism 2 set on the base 1. The clamping mechanism 2 is used to clamp and position the plastic shell 7.

[0058] Reference Figure 1 and Figure 2 The clamping mechanism 2 includes a mounting base 21, multiple clamping blocks 22, and a moving assembly 3. The base 1 has a cuboid structure. Multiple mounting bases 21 are provided, each corresponding to one of the clamping blocks 22. The number of mounting bases 21 and clamping blocks 22 is the same as the number of side walls of the plastic shell 7. If the plastic shell 7 has a cuboid or cube structure, then there are at least four mounting bases 21 and clamping blocks 22, corresponding to four side walls of the plastic shell 7, thereby achieving simultaneous clamping and positioning of multiple side walls of the plastic shell 7. Multiple moving assemblies 3 are provided, the same number as the mounting bases 21 and clamping blocks 22. The multiple moving assemblies 3 are used to drive the multiple mounting bases 21 to move closer or further apart, and to drive the multiple clamping blocks 22 to move closer or further apart.

[0059] The moving assembly 3 includes a first moving part 31, a second moving part 32, a first pressure detector 33, and a second pressure detector 34. The first moving part 31 and the second moving part 32 are both electric actuators. The first moving part 31 and the second moving part 32 are fixedly installed on the lower surface of the base 1. The piston rod of the first moving part 31 is fixedly connected to the opposite side walls of the mounting base 21 and the clamping block 22 through the first rod body 35 and the piston rod of the second moving part 32 through the second rod body 36, respectively. Multiple first moving parts 31 are activated simultaneously to drive the mounting base 21 to move closer or further away from each other. Multiple second moving parts 32 are activated simultaneously to drive the clamping block 22 to move closer or further away from each other. The base 1 has multiple mounting holes 11 for sliding of the second rod body 36.

[0060] Reference Figures 1-3 The mounting base 21 and the clamping block 22 are respectively provided with receiving groove 37 and receiving groove 38 on their side walls. Pressure detector 33 is fixedly installed on receiving groove 37 and pressure detector 34 is fixedly installed on receiving groove 38.

[0061] The robotic arm places the plastic shell 7 onto the base 1, with the plastic shell 7 positioned between multiple mounting seats 21 and multiple clamping blocks 22 located inside the cavity of the plastic shell 7. Moving component 1 31 drives the multiple mounting seats 21 closer together and presses against the outer wall of the plastic shell 7, while pressure detector 1 33 presses against the plastic shell 7 to detect pressure. When the pressure reaches a specified value, the multiple mounting seats 21 stop moving. Then, moving component 2 32 starts driving the multiple clamping blocks 22 away from each other, causing the clamping blocks 22 to press against the cavity of the plastic shell 7 for positioning. Simultaneously, pressure detector 2 34 presses against the cavity of the plastic shell 7 to detect pressure. When the pressure reaches a specified value, the clamping blocks 22 stop moving, allowing the mounting seats 21 and clamping blocks 22 to maintain a certain force on the plastic shell 7. When it is necessary to remove the plastic shell 7, moving component 1 31 and moving component 2 32 drive the multiple mounting seats 21 and multiple clamping blocks 22 away from the plastic shell 7, and the robotic arm starts to grasp and transport the plastic shell 7.

[0062] Reference Figures 1-4 The top of the clamping block 22 is located above the plastic shell 7. The clamping block 22 is provided with a pressing component 4. A vertical mounting groove 23 is provided on the side wall of the clamping block 22 near the mounting base 21, which penetrates the top of the clamping block 22. The pressing component 4 includes a pressing block 41 and an elastic element 42. A horizontal rotating shaft 43 is rotatably mounted on the top of the clamping block 22. The top of the pressing block 41 is rotatably mounted on the rotating shaft 43, and the pressing block 41 extends downward to the lower surface of the plastic shell 7 and is located in the mounting groove 23.

[0063] A rotating seat 44 is rotatably mounted on the inner wall of the mounting groove 23. The rotation axis of the rotating seat 44 is parallel to the axis of the rotating shaft 43. The rotating seat 44 is located on the side of the pressing block 41 near the inside of the mounting groove 23. Guide posts 45 are fixedly mounted on the bottom end of the pressing block 41 and the side wall opposite to the mounting seat 21. The elastic element 42 is a spring, with both ends of the elastic element 42 sleeved on the two guide posts 45, and the two ends of the elastic element 42 pressing against the rotating seat 44 and the pressing block 41 for positioning. In the initial state, the pressing block 41 is vertical and extends out of the mounting groove 23 from the side wall opposite to the rotating seat 44.

[0064] The clamping block 22 and the pressing component 4 are close to the inner cavity of the plastic shell 7. The pressing block 41 first abuts against the plastic shell 7. The plastic shell 7 pushes the bottom end of the pressing block 41 to rotate into the mounting groove 23, so that the pressing block 41 rotates to an inclined state until both the clamping block 22 and the pressing block 41 press against the inner cavity of the plastic shell 7, and the pressing block 41 is in an inclined state, generating a horizontal pushing force and a downward pressure on the plastic shell 7, thereby improving the clamping effect of the plastic shell 7.

[0065] It also includes a first adsorption mechanism 5 disposed on the clamping block 22 and a second adsorption mechanism 8 disposed on the base 1. When the clamping block 22 is clamped on the inner cavity of the plastic shell 7, the first adsorption mechanism 5 and the second adsorption mechanism 8 are respectively adsorbed onto the inner cavity and the lower surface of the plastic shell 7 for positioning. The first adsorption mechanism 5 and the second adsorption mechanism 8 have the same structure, only their positions are different. The following explanation uses the first adsorption mechanism 5 as an example.

[0066] The first adsorption mechanism 5 includes multiple suction cups 51 and a control component 6. Multiple adsorption grooves 52 are spaced apart on the side wall of the clamping block 22 near the mounting base 21. Multiple suction cups 51 are fixedly installed on the adsorption grooves 52 and extend to the outside of the adsorption grooves 52. The control component 6 controls the multiple suction cups 51 to communicate or disconnect with the outside. When the control component 6 controls the multiple suction cups 51 to communicate with the outside, the clamping block 22 moves and presses against the inner cavity of the plastic shell 7, and the multiple suction cups 51 are squeezed and moved into the adsorption grooves 52, so that the air in the multiple suction cups 51 is discharged. The control component 6 controls the multiple suction cups 51 to disconnect from the outside, so that the multiple suction cups 51 are adsorbed on the plastic shell 7 for positioning.

[0067] The control component 6 includes a sealing seat 61 and a control tube 62. The sealing seat 61 is fixedly installed in the mounting groove 23 and is located below the elastic member 42 and on the side of the pressing block 41 near the mounting groove 23. The sealing seat 61 is made of elastic material. The control tube 62 is fixedly installed on the side of the sealing seat 61 away from the pressing block 41 and is connected to multiple suction cups 51. The control tube 62 is a flexible tube. The sealing seat 61 has a sealing port at the end near the pressing block 41 that communicates with the control tube 62. Multiple suction cups 51 constituting the second adsorption mechanism 8 are fixedly installed on the upper surface of the base 1. The control component 6 constituting the second adsorption mechanism 8 is also installed on the mounting groove 23 and connected to the multiple suction cups 51.

[0068] When the clamping block 22 detaches from the plastic shell 7, the vertical pressing block 41 detaches from the sealing seat 61, the plastic shell 7 is placed on the base 1, and the lower surface of the plastic shell 7 presses against multiple suction cups 51, causing the plastic shell 7 to be positioned against the upper surface of the base 1. Air in the suction cups 51 is discharged through the sealing port. When the clamping block 22 drives the multiple suction cups 51 to approach and press against the inner cavity of the plastic shell 7, the air in the multiple suction cups 51 is discharged through the sealing port. The inclined pressing block 41 generates downward pressure to position the plastic shell 7.

[0069] When the clamping block 22 presses against the plastic shell 7, the inclined pressing block 41 presses against the sealing seat 61, thereby disconnecting the suction cups 51 located on the clamping block 22 and the base 1 from the outside, allowing multiple suction cups 51 to be attached to the inner cavity and lower surface of the plastic shell 7 for positioning. When it is necessary to unlock the plastic shell 7, the mounting seat 21 and the clamping block 22 are moved away from the plastic shell 7, and the pressing block 41 disengages from the sealing seat 61 under the elastic force of the elastic member 42, allowing outside air to enter the suction cups 51, thereby unlocking the plastic shell 7.

[0070] The working principle of this application embodiment is as follows:

[0071] The robotic arm places the plastic shell 7 onto the base 1. The plastic shell 7 squeezes the suction cup 51 and abuts against the base 1 for positioning. The first moving part 31 drives multiple mounting seats 21 to press against the outer wall of the plastic shell 7 for positioning. The robotic arm disengages from the plastic shell 7. The second moving part 32 drives multiple clamping blocks 22 to move away from each other and press against the inner cavity of the plastic shell 7 for positioning. At the same time, the pressure detectors 33 and 34 ensure that the mounting seats 21 and clamping blocks 22 maintain a certain force on the plastic shell 7.

[0072] The clamping block 22 drives the pressing block 41 and multiple suction cups 51 to approach the plastic shell 7. The suction cups 51 and the pressing block 41 contact the inner cavity of the plastic shell 7. The air in the suction cups 51 is discharged through the sealing port. The pressing block 41 is rotated to an inclined state until the clamping block 22 presses against the inner cavity of the plastic shell 7. The inclined pressing block 41 presses against the plastic shell 7 and the sealing seat 61 to seal the sealing port. This enables multiple suction cups 51 to be attached to the inner cavity and lower surface of the plastic shell 7 for positioning. At the same time, the pressing block 41 forms downward pressure on the plastic shell 7, which greatly improves the positioning effect of the plastic shell 7, reduces the force on the plastic shell 7, reduces the risk of deformation of the plastic shell 7, and improves the quality of the plastic shell 7 itself and after assembly.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tooling fixture employing internal cavity clamping and positioning, characterized in that: Includes a base (1) and a clamping mechanism (2) disposed on the base (1), wherein the clamping mechanism (2) includes: Mounting base (21) is mounted on base (1); Multiple clamping blocks (22) are slidably disposed on the base (1). When the plastic shell (7) is placed on the base (1), it abuts against the mounting base (21) for positioning and so that the multiple clamping blocks (22) are located inside the cavity of the plastic shell (7); The moving component (3) is used to drive multiple clamping blocks (22) to move and cause the multiple clamping blocks (22) to clamp and position the inner cavity of the plastic shell (7) or to release the clamping from the plastic shell (7); The clamping block (22) is provided with a pressing component (4), and the clamping block (22) has a mounting groove (23) on the side wall near the mounting base (21); the pressing component (4) includes: The top end of the pressing block (41) is rotatably mounted on the clamping block (22) and the bottom end extends into the mounting groove (23); The elastic element (42) is provided on the bottom end of the mounting groove (23) and the pressing block (41); In the initial state, the elastic element (42) pushes the pressing block (41) to extend out of the mounting groove (23) and into a vertical state near the side wall of the mounting base (21); when the clamping block (22) approaches the inner cavity of the plastic shell (7), the pressing block (41) first contacts the inner cavity of the plastic shell (7) and rotates its bottom end toward the mounting groove (23); when the clamping block (22) is clamped on the inner cavity of the plastic shell (7) for positioning, the pressing block (41) rotates to an inclined state and exerts downward pressure on the plastic shell (7); It also includes a first adsorption mechanism (5) disposed on the clamping block (22) and a second adsorption mechanism (8) disposed on the base (1); The first adsorption mechanism (5) includes: Multiple suction cups (51) are provided on the clamping block (22); The control component (6) controls the connection or disconnection of multiple suction cups (51) with the outside world; when the clamping block (22) is pressed against the inner cavity of the plastic shell (7) for positioning, the control component (6) controls the suction cups (51) to disconnect from the outside world and realizes that the suction cups (51) are adsorbed on the inner cavity of the plastic shell (7) for positioning; when the clamping block (22) is away from the plastic shell (7), the control component (6) controls the suction cups (51) to connect with the outside world and facilitates the separation of the suction cups (51) from the plastic shell (7); The control component (6) includes: The sealing seat (61) is installed in the mounting groove (23); The control tube (62) is connected to the sealing seat (61) and the suction cup (51); the pressing block (41) is initially separated from the sealing seat (61) and allows the air in the suction cup (51) to be discharged through the sealing seat (61). When the clamping block (22) presses against the inner cavity of the plastic shell (7) and the pressing block (41) is tilted, the pressing block (41) presses against the sealing seat (61) to achieve a seal and disconnects the suction cup (51) from the outside. The sealing seat (61) is made of an elastic material.

2. The tooling fixture with internal cavity clamping and positioning according to claim 1, characterized in that: The mounting base (21) is slidably disposed on the base (1) and there are multiple mounting bases (21) and multiple clamping blocks (22) corresponding to each other and clamping multiple side walls of the plastic shell (7); multiple moving components (3) are provided and are used to drive multiple mounting bases (21) to move closer or further away from each other and to drive multiple clamping blocks (22) to move closer or further away from each other.

3. A tooling fixture with internal cavity clamping and positioning according to claim 2, characterized in that: The moving component (3) includes: Movable component one (31) and movable component two (32) are used to drive the mounting base (21) and clamping block (22) to move, respectively; Pressure detector 1 (33) is mounted on mounting base (21) and is used to detect the force exerted by mounting base (21) on plastic shell (7) and is electrically connected to moving part 1 (31); Pressure detector 2 (34) is set on clamping block (22) and is used to detect the force exerted by clamping block (22) on plastic shell (7) and is electrically connected to moving part 2 (32); After the plastic shell (7) is placed on the base (1), multiple moving parts one (31) simultaneously start to drive multiple mounting seats (21) to press against the outer wall of the plastic shell (7). Then, the moving parts two (32) drive multiple clamping blocks (22) to press against the inner cavity of the plastic shell (7) for positioning. When it is necessary to unlock the plastic shell (7), the moving parts one (31) and moving parts two (32) simultaneously start to drive the mounting seats (21) and clamping blocks (22) away from the plastic shell (7).

4. The tooling fixture with internal cavity clamping and positioning according to claim 1, characterized in that: A rotating seat (44) is rotatably mounted on the mounting groove (23), and the two ends of the elastic element (42) are connected to the pressing block (41) and the rotating seat (44).

5. A tooling fixture with internal cavity clamping and positioning according to claim 4, characterized in that: Guide posts (45) are provided on both the pressing block (41) and the rotating seat (44). The elastic element (42) presses against the pressing block (41) and the rotating seat (44) at both ends and is respectively sleeved on the two guide posts (45) for positioning.

6. A tooling fixture with internal cavity clamping and positioning according to claim 1, characterized in that: When the clamping block (22) is clamped on the inner cavity of the plastic shell (7), the first adsorption mechanism (5) and the second adsorption mechanism (8) are respectively adsorbed on the inner cavity and the lower surface of the plastic shell (7) for positioning.

Images