A clamping jig

Abstract

The present application relates to jig technical field, specifically disclose a kind of brace and embrace type jig, including support, rotating device and brace open device;The brace and embrace type jig of the present application can cooperate with carrier, conveying device and CCD vision detection device, first workpiece is placed in the limiting frame of carrier, conveying device is conveyed to the carrier below CCD vision detection device, the offset angle of workpiece is detected using CCD vision detection device, according to offset angle, using rotating device, brace open device is rotated to standard angle, then using conveying device, carrier is conveyed to the brace open device below, brace open device is lowered after brace and embrace clamping action to workpiece, realize automatic centering grabbing, and simple structure, low manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jigs, in particular to a supporting and embracing jig. BACKGROUND

[0002] In the production line of workpieces (such as covers and the like), the workpieces need to be picked up, grabbed and transferred. When a cover type workpiece needs to be grabbed and transferred, the existing method is generally to grab the workpiece by, for example, a mechanical arm. Although this can achieve flexible grabbing and releasing of the workpiece, the mechanical arm needs to be in contact with at least one outer surface of the workpiece, which can easily cause scratches on the outer surface of the workpiece, affecting the appearance of the product.

[0003] Based on the above problems, some manufacturers have designed a jig that grabs the inner wall of the workpiece by opening it. This type of jig can refer to, for example, a linkage type jig disclosed in Chinese Patent No. CN116728321A, which includes a seat body, a plurality of supporting members arranged in groups, and a driving device. The upper end of the seat body is provided with a support part that supports the upper cavity wall of the cover shell upward. At least two supporting members in the same group are arranged on opposite sides of the seat body and are movably arranged in a restoring direction and a opening direction. When moving in the opening direction, each supporting member is supported on the corresponding side cavity wall of the cover shell. The opening direction of each two supporting members arranged in different groups is arranged in a cross manner. The driving device includes a driving member and a transmission assembly. The transmission assembly is connected with each supporting member, and the driving member is movably installed on the seat body to have a driving stroke that synchronously moves each supporting member in its opening direction through the transmission assembly when driven by an external force.

[0004] The above-mentioned linkage type jig has a complex structure and high manufacturing cost. Moreover, for some workpieces with specific slots, when the workpieces are not fed at a standard placement angle, effective grabbing cannot be achieved, resulting in the subsequent feeding action failing to accurately center the workpiece.

[0005] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0006] In view of the shortcomings of the prior art described above, the purpose of the present application is to provide a supporting and embracing jig to solve the problems of complex structure of the prior art jig and inability to automatically center and grab.

[0007] A supporting and embracing jig, comprising:

[0008] a support frame;

[0009] at least one rotating device installed on the support frame, comprising a rotating shaft arranged in the z direction;

[0010] The expansion device is connected to the rotating shaft and comprises two sliders which are relatively or oppositely movable, a positioning rod which is fixed to the sliders and can rotate and adjust an angle around the z axis, and an expansion piece which is fixed to the positioning rod and is provided with at least two limiting grooves which abut against the inner wall of the workpiece.

[0011] Specifically, the slider is internally provided with an inner cavity, the inner cavity is connected with a positioning hole which is communicated with the outside and is arranged along the z direction, the positioning rod comprises a limiting part which can pass through the positioning hole along the z direction, and a rod part which is connected to one end of the limiting part along the z direction, the limiting part can completely pass through the positioning hole along the z direction and rotate and adjust an angle in the inner cavity.

[0012] Specifically, the positioning rod further comprises a limiting part which is connected to the other end of the limiting part along the z direction, and the inner cavity is provided with an elastic piece which is used for elastically supporting the limiting part.

[0013] Specifically, the elastic piece is a spring.

[0014] Specifically, the expansion piece comprises a mounting part which is fixed to the positioning rod, a bending part which is connected to the mounting part at a right angle, and a supporting part which is connected to one end of the bending part, the limiting grooves are formed on the outer side surface of the supporting part, one side of the supporting part along the x direction forms a first notch, and one side of the supporting part along the y direction forms a second notch.

[0015] Specifically, the expansion device further comprises a shell, a pad which is arranged in the inner cavity of the shell, a push block, a piston which is fixed to one end of the push block, and two swing arms which are connected to the end part of the piston, the two swing arms are respectively rotationally connected with the two sliders, a first air cavity is arranged between the pad and the push block, an air inlet which is communicated with the first air cavity is arranged on the shell, a second air cavity is formed on the outer side of one end of the piston which faces the pad, and an air outlet which is communicated with the second air cavity is arranged on the shell.

[0016] Specifically, the outer sides of the push block and the piston are both sleeved with sealing rings.

[0017] Specifically, the air inlet is connected with a first air valve through an air pipe, and the other ends of all the first air valves are commonly connected to a first air supply device through air pipes.

[0018] Specifically, the air outlet is connected with a second air valve through an air pipe, and the other ends of all the second air valves are commonly connected to a second air supply device through air pipes.

[0019] The beneficial effects of the present application are as follows:

[0020] The brace type jig of the present application can be used in cooperation with a carrier, a conveying device and a CCD visual detection device, the workpiece is first placed in the limiting frame of the carrier, the conveying device conveys the carrier to below the CCD visual detection device, the CCD visual detection device detects the offset angle of the workpiece, according to the offset angle, the rotating device is used to rotate the brace opening device to a standard angle, the conveying device is used to convey the carrier to below the brace opening device, the brace opening device is lowered to brace and hold the workpiece, automatic centering grabbing is realized, the structure is simple, and the manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0022] Figure 1 It is a perspective view of the brace type jig of the present application before the brace opening device braces the workpiece carried in the carrier;

[0023] Figure 2 It is a top view of the carrier and the workpiece, the carrier is provided with a plurality of limiting frames, and the workpiece is installed in the limiting frame;

[0024] Figure 3 It is a sectional view of the brace opening device of the present application;

[0025] Figure 4 It is an exploded view of the brace opening device of the present application;

[0026] Figure 5 It is a structure schematic view of the first brace opening mode of the brace opening device of the present application;

[0027] Figure 6 It is a structure schematic view of the second brace opening mode of the brace opening device of the present application;

[0028] Figure 7 It is a structure schematic view of the third brace opening mode of the brace opening device of the present application;

[0029] Figure 8 It is a structure schematic view of the fourth brace opening mode of the brace opening device of the present application;

[0030] Figure 9 It is a schematic view of the air inlet structure of the present application;

[0031] Figure 10 It is a schematic view of the air outlet structure of the present application.

[0032] The reference signs are: support 10, rotating device 20, opening device 30, sliding block 31, positioning rod 32, opening piece 33, workpiece 50, limiting groove 301, inner cavity 311, positioning hole 312, limiting part 321, rod part 322, positioning part 323, elastic piece 302, mounting part 331, bending part 332, clamping part 333, first notch 304, second notch 305, shell 34, pad 35, push block 36, piston 37, swing arm 38, first air cavity 341, air inlet 342, second air cavity 343, air outlet 344, sealing ring 345, first air valve 41, first air supply device 42, second air valve 43, second air supply device 44, carrier 60, limiting frame 61. DETAILED DESCRIPTION

[0033] The present application provides a clamping jig. In order to make the purpose, technical scheme and effect of the present application more clear and explicit, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0034] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] As Figures 1-10 The present embodiment discloses a clamping jig, comprising:

[0036] a support 10;

[0037] at least one rotating device 20 mounted on the support 10, comprising a rotating shaft arranged along the z direction;

[0038] an opening device 30 connected to the rotating shaft, comprising two sliding blocks 31 movable relative to or opposite to each other, a positioning rod 32 fixed to the sliding blocks 31 and adjustable in angle around the z axis, and an opening piece 33 fixed to the positioning rod 32, the opening piece 33 being provided with at least two limiting grooves 301 abutting against the inner wall of the workpiece 50.

[0039] The brace type jig of the embodiment can be used in cooperation with the carrier 60, the conveying device and the CCD visual detection device. The workpiece 50 is first placed in the limiting frame 61 of the carrier 60. The conveying device conveys the carrier 60 to below the CCD visual detection device. The CCD visual detection device photographs the workpiece 50 in each limiting frame 61. The photographed object is converted into an image signal, which is then sent to a special image processing system. According to the information such as pixel distribution and brightness, color, etc., the image signal is converted into a digital signal. The image system performs various operations on the signals to extract the features of the target (for example, the angle of the two clamping grooves on the inner side of the workpiece). Then, the angle of the workpiece is obtained by comparing the preset standard angle with the angle obtained by photographing. According to the offset angle, the rotating device 20 is used to rotate the brace opening device 30 to the standard angle. Then, the conveying device is used to convey the carrier 60 to below the brace opening device 30. After the brace opening device 30 is lowered, the brace type jig is used to clamp the workpiece 50. The automatic centering and grabbing are realized. Moreover, the structure is simple, and the manufacturing cost is low.

[0040] The brace type jig of the embodiment, the brace opening device 30 includes two sliding blocks 31, a positioning rod 32 fixed to the sliding block 31 and rotatable about the z-axis to adjust the angle, and a brace opening piece 33 fixed to the positioning rod 32. The brace opening piece 33 is provided with at least two limiting grooves 301 abutting against the inner wall of the workpiece 50. The positioning rod 32 is designed to be rotatable. Moreover, the brace opening piece 33 is provided with a plurality of limiting grooves 301. The operator can adjust the angle of the positioning rod 32 by rotating according to the size of the workpiece 50, so as to adjust the orientation of the limiting groove 301 on the brace opening piece 33 corresponding to the workpiece 50. Thus, the brace type jig can be used to grab workpieces of various sizes. The structure is ingenious.

[0041] The rotating device 20 of the embodiment adopts a motor. The rotating shaft refers to the transmission shaft of the motor. The motor is only a relatively preferred embodiment of the embodiment. In other embodiments, a rotating driving device such as a turbine drive or a motor gear drive can also be used, and is not limited to the motor of the embodiment.

[0042] Please refer to Figure 3 and Figure 4 The sliding block 31 of the embodiment is provided with an inner cavity 311. The inner cavity 311 is connected with a positioning hole 312 which is in communication with the outside and is arranged along the z-direction. The positioning hole 312 is a square hole. The positioning rod 32 includes a limiting part 321 which can pass through the positioning hole 312 along the z-direction, and a rod part 322 connected to one end of the limiting part 321 along the z-direction. The limiting part 321 is a cuboid structure. The limiting part 321 can completely pass through the positioning hole 312 along the z-direction and rotate to adjust the angle in the inner cavity 311. After the angle is adjusted, the limiting part 321 is clamped into the positioning hole 312, which is limited by the positioning hole 312. The operation difficulty is low.

[0043] Further, the positioning rod 32 of the embodiment further comprises a positioning part 323 connected to the limiting part 321 at the other end in the z direction, and the inner cavity 311 is provided with an elastic member 302 for elastically supporting the positioning part 323. Before the user adjusts the angle of the positioning rod 32, the user can press the positioning rod 32 downward, so that the positioning rod 32 passes through the positioning hole 312 in the z direction, and then the user rotates and adjusts the angle in the inner cavity 311. After the angle adjustment is completed, the positioning rod 32 can be automatically reset in the z direction by the elastic supporting action of the elastic member 302. The reset can be completed without using a complex driving structure, and the structure is simple and convenient for the user to operate.

[0044] Further, the elastic member 302 of the embodiment is a spring, and the positioning part 323 is a cylindrical structure. One end of the spring is sleeved on the positioning part 323, and the other end abuts against the top surface of the inner cavity 311. The positioning rod 32 can be stably retained in the positioning hole 312 under the action of the spring without external force.

[0045] Of course, the spring described above is only a relatively optimal embodiment. In other embodiments, the elastic member 302 can also be a spring piece, a rubber pad, etc., and is not limited to the spring used in the embodiment. These equivalent variants or replacements are all included in the scope defined by the claims of the present application.

[0046] Please refer to Figure 4 The support member 33 of the embodiment comprises a mounting part 331 fixedly connected to the positioning rod 32, a bending part 332 connected at a right angle to the mounting part 331, and a support part 333 connected to one end of the bending part 332. The limiting grooves 301 are formed on the outer side surface of the support part 333. The first notch 304 is formed on one side of the support part 333 in the x direction, and the second notch 305 is formed on one side of the support part 333 in the y direction.

[0047] The first notch 304 and the second notch 305 are arranged such that the positions of the four limiting grooves 301 on the support part 333 in the support opening direction are different after the four limiting grooves 301 are rotated to the support opening direction. Therefore, the support opening limiting of the four specifications of the workpiece 50 can be satisfied.

[0048] Figure 5 One of the support opening modes of the support opening device 30 is that the first notch 304 of the two mirror-image arranged support members 33 is directed outward from the support opening sliding direction of the sliding block 31 through the angle adjustment of the positioning rod 32. At this time, the limiting groove 301 on the same side as the first notch 304 is used as the structure for supporting and opening the workpiece 50.

[0049] Figure 6For the second opening mode of the opening device 30, the angle of the positioning rod 32 is adjusted so that the first notch 304 of the two mirror-image opening members 33 faces the inner side of the retracting sliding direction of the slider 31. At this time, the limiting groove 301 on the back side of the first notch 304 serves as a structure for limiting the opening of the workpiece 50.

[0050] Figure 7 For one of the opening modes of the opening device 30, the angle of the positioning rod 32 is adjusted so that the second notch 305 of the two mirror-image opening members 33 faces the outer side of the opening sliding direction of the slider 31. At this time, the limiting groove 301 on the same side of the second notch 305 serves as a structure for limiting the opening of the workpiece 50.

[0051] Figure 8 For the second opening mode of the opening device 30, the angle of the positioning rod 32 is adjusted so that the second notch 305 of the two mirror-image opening members 33 faces the inner side of the retracting sliding direction of the slider 31. At this time, the limiting groove 301 on the back side of the second notch 305 serves as a structure for limiting the opening of the workpiece 50.

[0052] Please refer to Figure 3 and Figure 4 The opening device 30 of the embodiment further includes a housing 34, a pad 35 arranged in the inner cavity 311 of the housing 34, a push block 36, a piston 37 fixed to one end of the push block 36, two swing arms 38 connected to the end of the piston 37, and two sliders 31 respectively rotatably connected to the two swing arms 38. The two swing arms 38 are driven to move by the piston 37, thereby driving the two sliders 31 to open or retract.

[0053] Further, the opening device 30 of the embodiment adopts a pneumatic structure. A first air cavity 341 is arranged between the pad 35 and the push block 36. An air inlet 342 is arranged on the housing 34 and communicates with the first air cavity 341. The air inlet 342 is connected to an air source. The gas in the first air cavity 341 drives the piston 37 to move in the z direction. The piston 37 forms a second air cavity 343 on the outer side of the end of the pad 35. An air outlet 344 is arranged on the housing 34 and communicates with the second air cavity 343. The piston 37 reduces the space of the second air cavity 343, and the gas in the second air cavity 343 is discharged through the air outlet 344.

[0054] It should be noted that the air inlet 342 does not mean that it is only used for air intake, and the air outlet 344 does not mean that it is only used for air exhaust. When the piston 37 is reset, the air inlet 342 can be switched to an air outlet, and the air outlet 344 can be switched to an air inlet.

[0055] In order to improve the sealing performance of the pneumatic structure in the opening device 30 and avoid air leakage, a sealing ring 345 is arranged on the outer side of the push block 36 and the piston 37.

[0056] Please refer toFigure 9 and Figure 10 As shown in Fig. 3, the air inlet 342 is connected with the first air valve 41 through the air pipe, all the other ends of the first air valve 41 are connected with the first air supply device 42 through the air pipe, each air inlet 342 is connected with the first air valve 41 through the air pipe, the air outlet 344 is connected with the second air valve 43 through the air pipe, all the other ends of the second air valve 43 are connected with the second air supply device 44 through the air pipe; through the above setting, the air dynamics of each dilating device 30 is relatively independent, when the CCD visual detection device detects that there is no workpiece 50 in a certain limiting frame 61, the corresponding first air valve 41 and second air valve 43 at the position can be controlled not to work, thereby reducing the energy consumption.

[0057] The above describes the preferred embodiments of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A support-type fixture, characterized in that, include: Support (10); At least one rotating device (20) is mounted on the bracket (10) and includes a rotating shaft arranged along the z-direction; The spreading device (30), connected to the rotating shaft, includes two sliders (31) that can move relative to or opposite to each other, a positioning rod (32) fixed to the sliders (31) and capable of rotating around the z-axis to adjust the angle, and a spreading member (33) fixed to the positioning rod (32). The spreading member (33) is provided with at least two limiting grooves (301) that abut against the inner wall of the workpiece (50). The spreading member (33) includes a mounting part (331) fixed to the positioning rod (32) and a bent part that is perpendicularly connected to the mounting part (331). 332) A supporting part (333) connected to one end of the bent part (332), wherein the limiting groove (301) is formed on the outer side of the supporting part (333), a first notch (304) is formed on one side of the supporting part (333) along the x direction, and a second notch (305) is formed on one side of the supporting part (333) along the y direction. The setting of the first notch (304) and the second notch (305) makes the positions of the four limiting grooves (301) on the supporting part (333) along the opening direction different after they are rotated to the opening direction. The slider (31) has an inner cavity (311) inside. The inner cavity (311) is connected to a positioning hole (312) that communicates with the outside and is arranged along the z-direction. The positioning rod (32) includes a limiting part (321) that can pass through the positioning hole (312) along the z-direction and a rod part (322) connected to one end of the limiting part (321) along the z-direction. The limiting part (321) can completely pass through the positioning hole (312) along the z-direction and rotate to adjust the angle in the inner cavity (311).

2. The supporting fixture according to claim 1, characterized in that, The positioning rod (32) also includes a positioning part (323) connected to the other end of the limiting part (321) along the z direction, and the inner cavity (311) is provided with an elastic element (302) for elastically supporting the positioning part (323).

3. The supporting fixture according to claim 2, characterized in that, The elastic element (302) is a spring.

4. The supporting fixture according to claim 1, characterized in that, The spreading device (30) further includes a housing (34), a pad (35) disposed in the inner cavity (311) of the housing (34), a push block (36), a piston (37) fixed to one end of the push block (36), and two swing arms (38) connected to the end of the piston (37). The two swing arms (38) are rotatably connected to two sliders (31) respectively. A first air chamber (341) is provided between the pad (35) and the push block (36). An air inlet (342) communicating with the first air chamber (341) is provided on the housing (34). A second air chamber (343) is formed on the piston (37) facing the outer side of one end of the pad (35). An air outlet (344) communicating with the second air chamber (343) is provided on the housing (34).

5. A support-type fixture according to claim 4, characterized in that, The push block (36) and piston (37) are both fitted with sealing rings (345).

6. The supporting fixture according to claim 4, characterized in that, The air inlet (342) is connected to a first air valve (41) via an air pipe, and the other end of all the first air valves (41) is connected to the first air supply device (42) via an air pipe.

7. A support-type fixture according to claim 4, characterized in that, The air outlet (344) is connected to a second air valve (43) via an air pipe, and the other end of all the second air valves (43) is connected to the second air supply device (44) via an air pipe.

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