Automatic mechanism for clamping and positioning product

Abstract

The invention discloses an automatic product clamping and positioning mechanism which comprises an annular circulation track and a clamping and positioning device moving along the annular circulation track, the clamping and positioning device comprises a lead screw mechanism, a clamping jaw connected with the lead screw mechanism and a motor driving the lead screw mechanism, and a lifting device is arranged in an inner ring of the annular circulation track. The motor is installed on a lifting module of the lifting device, the permanent magnetic coupler assemblies are installed at the end of a motor shaft and one end of the lead screw, and the two permanent magnetic coupler assemblies are used in cooperation. The motor can be separated from or matched with the lead screw mechanism through the permanent magnetic coupler, so that the technical problem that a motor wire cannot make annular circulation displacement along with the clamping device is solved.

Description

Technical Field

[0001] The invention relates to production equipment, in particular to a clamp for product transmission. Background Art

[0002] The clamping device is used to clamp the product, and the product needs to be moved in a circular cycle. During the circular cycle displacement process, the product processing or assembly is completed. The clamping device is automated and requires a drive unit. The action of the drive unit requires electrical energy, and the transmission of electrical energy requires wires. However, the wires cannot move in a circular cycle with the clamping device. Summary of the invention

[0003] The technical problem solved by the present invention is that the conductor cannot perform annular cyclic displacement along with the clamping device.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an automated mechanism for clamping and positioning a product, comprising a circular circulating track, and a clamping and positioning device that moves along the circular circulating track, the clamping and positioning device comprising a screw mechanism, a clamping claw connected to the screw mechanism, and a motor that drives the screw mechanism, a lifting device is provided in the inner ring of the circular circulating track, the motor is installed on the lifting module of the lifting device, a first permanent magnetic coupling assembly is installed on the motor shaft, a second permanent magnetic coupling assembly is installed on one end of the screw of the screw mechanism, and the first permanent magnetic coupling assembly is used in conjunction with the second permanent magnetic coupling assembly.

[0005] According to the above technical solution, workers place the product in the clamp at the loading and unloading station. Under the drive of the lifting device, the motor descends, the first permanent magnetic coupling assembly and the second permanent magnetic coupling assembly are attracted, the motor drives the screw to rotate, and the screw mechanism drives the clamp to clamp the product. After that, under the drive of the lifting device, the motor rises and resets, and the first permanent magnetic coupling assembly and the second permanent magnetic coupling assembly are separated. The height of the motor after reset is higher than the clamping and positioning device, and the clamping and positioning device can move along the circular circulation track.

[0006] Several workstations are arranged along the circular circulation track, including loading and unloading stations and processing / assembly stations. A slot-shaped photoelectric sensor is arranged at the loading and unloading station, and a light shielding sheet used in conjunction with the slot-shaped photoelectric sensor is arranged on the clamping and positioning device. When the light shielding sheet enters the slot-shaped photoelectric sensor, the clamping and positioning device displaced along the circular circulation track is suspended at the loading and unloading station; at the loading and unloading station, the descending first permanent magnetic coupling assembly is attracted to the second permanent magnetic coupling assembly.

[0007] After the clamping and positioning device moves one circle along the circular circulation track, the light blocking piece enters the slotted photoelectric sensor, and the slotted photoelectric sensor feeds back the electrical signal to the main control unit. The main control unit suspends the displacement of the clamping and positioning device, and the lifting device is activated, the motor descends and rotates in the reverse direction, the first permanent magnetic coupling assembly and the second permanent magnetic coupling assembly are attracted, the motor drives the lead screw to rotate in the reverse direction, the clamp opens, and the worker removes the product from the clamp.

[0008] The lifting device comprises a vertical bracket, a vertical guide rail and a vertical cylinder installed on the vertical bracket, and the lifting module is connected to the vertical cylinder and matched on the vertical guide rail.

[0009] The screw mechanism is arranged on a screw mechanism bracket, the screw mechanism bracket is provided with a guide rod, the guide rod is provided with a left displacement module, a right displacement module and a middle fixed module, the left displacement module is driven by a screw, and a linkage mechanism is provided between the left displacement module and the right displacement module. The clamping jaws include a left clamping jaw installed on the left displacement module, a right clamping jaw installed on the right displacement module, and a middle fixed clamping jaw installed on the middle fixed module; the light shielding sheet is connected to the right displacement module.

[0010] The motor drives the screw, the screw drives the screw nut, the screw nut drives the left displacement module, and the left displacement module drives the left clamping jaw to move toward the middle fixed clamping jaw. The left displacement module drives the right displacement module through the linkage mechanism, and the right displacement module drives the right clamping jaw to move toward the middle fixed clamping jaw. In this way, the rotation of the screw can drive the left and right clamping jaws to move synchronously towards each other, and the two products are clamped between the left clamping jaw and the middle fixed clamping jaw, and between the right clamping jaw and the middle fixed clamping jaw.

[0011] The linkage mechanism includes a plurality of follower modules movably engaged on the guide rod, and a telescopic door structure. The plurality of follower modules are distributed between the left displacement module and the middle fixed module, and between the middle fixed module and the right displacement module. The left end of the telescopic door structure is hinged to the left displacement module, the right end of the telescopic door structure is hinged to the right displacement module, the middle part of the telescopic door structure is hinged to the middle fixed module, the telescopic door structure is hinged to the follower module at an intersection of an X-shaped connecting rod between the left displacement module and the middle fixed module, and the telescopic door structure is hinged to the follower module at an intersection of an X-shaped connecting rod between the right displacement module and the middle fixed module.

[0012] Since the intersection of the X-shaped connecting rod in the middle of the telescopic door structure is hinged with the middle fixed module, the linear displacement of the left displacement module can be converted into the rotation angle of the X-shaped connecting rod in the middle of the telescopic door structure, and the rotation angle of the X-shaped connecting rod in the middle of the telescopic door structure is then converted into the linear displacement of the right displacement module through the right half of the telescopic door structure, and the linear displacement of the left displacement module is equal to the linear displacement of the right displacement module, but in the opposite direction. In this way, the left displacement module and the right displacement module can be synchronously displaced toward each other.

[0013] The clamping and positioning device is equipped with a manual positioning mechanism, which includes a vertical support frame set in the inner circle of the circular circulation track, a horizontal support frame installed on the vertical support frame and extending horizontally in the direction of the clamping jaws, and a number of rollers installed on the horizontal support frame. The rollers are located between the left clamping jaw and the right clamping jaw and behind the left clamping jaw and the right clamping jaw. In front of the clamping and positioning device, the worker places the product from front to back between the left clamping jaw and the middle fixed clamping jaw, and between the right clamping jaw and the middle fixed clamping jaw. The rear side of the product is against the roller, and the product is initially positioned. Afterwards, the left and right clamping jaws clamp the product.

[0014] A displacement plate is provided at the bottom of the clamping and positioning device, and a pair of pulleys are provided at the bottom of the displacement plate. The displacement plate is connected to a transmission chain, and the pair of pulleys abut against the inner side of the annular circulation track. The transmission chain is matched with a horizontal transmission sprocket, and the transmission sprocket is driven by a transmission chain motor. The transmission chain drives the displacement plate, and the displacement plate performs annular circulation displacement under the guidance of a pair of pulleys and the annular circulation track, and the clamping and positioning device is displaced accordingly.

[0015] The clamping and positioning device of the present invention has a driving unit (motor) of the clamping jaws that can be separated from or matched with the screw mechanism through a permanent magnetic coupling, so that when the clamping jaws clamp and release the product, the motor drives the screw mechanism; when the clamping and positioning device performs an annular cyclic displacement, the motor is separated from the screw mechanism to solve the technical problem that the motor wire cannot perform annular cyclic displacement with the clamping device.

[0016] The left clamping jaw and the right clamping jaw of the present invention adopt a single-rotation screw rod in conjunction with a telescopic door structure to achieve displacement toward each other. Compared with a double-rotation screw rod, the invention has low cost, convenient installation and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1 Schematic diagram of the automated mechanism for clamping and positioning the product;

[0019] Figure 2 Front view of the automated mechanism for clamping and positioning the product;

[0020] Figure 3 A top view of the automated mechanism for clamping and positioning the product;

[0021] Figure 4 It is a schematic diagram of the combined structure of the annular circulation track 10 and the transmission chain 20;

[0022] Figure 5 is a schematic diagram of the displacement plate 21;

[0023] Figure 6 is a schematic diagram of the displacement plate 21 from another viewing angle;

[0024] Figure 7 is a schematic diagram of a clamping and positioning device 30;

[0025] Figure 8 is a schematic diagram of the clamping and positioning device 30 from another perspective;

[0026] Fig. 9 is a front view of the clamping and positioning device 30;

[0027] Fig.10 is a top view of the clamping and positioning device 30;

[0028] Fig.11 is a schematic diagram of a lifting device 50;

[0029] Fig.12 It is a schematic diagram of the manual positioning mechanism 70.

[0030] Explanation of symbols in the figure:

[0031] 10. Circular loop track;

[0032] 20. Transmission chain; 21. Displacement plate; 22. Pulley; 23. Transmission sprocket; 24. Motor for transmission chain;

[0033] 30. Clamping and positioning device; 31. Screw mechanism; 310. Screw; 32. Screw mechanism bracket; 33. Guide rod; 34. Left displacement module; 340. Left clamping jaw; 35. Right displacement module; 350. Right clamping jaw; 36. Middle fixed module; 360. Middle fixed clamping jaw; 37. Follow-up module; 38. Telescopic door structure;

[0034] 40. Motor; 41. First permanent magnetic coupling assembly; 42. Second permanent magnetic coupling assembly;

[0035] 50. lifting device; 51. lifting module; 52. vertical bracket; 53. vertical guide rail; 54. vertical cylinder;

[0036] 60, light shield; 61, first slot-shaped photoelectric sensor; 62, second slot-shaped photoelectric sensor; 63, third slot-shaped photoelectric sensor;

[0037] 70. Manual positioning mechanism; 71. Vertical support frame; 72. Horizontal support frame; 73. Roller;

[0038] 90. Product. DETAILED DESCRIPTION

[0039] like Figure 1 , Figure 7 , Fig.11 An automated mechanism for clamping and positioning a product comprises a circular circulating track 10, and a clamping and positioning device 30 that moves along the circular circulating track, wherein the clamping and positioning device comprises a screw mechanism 31, a clamping claw connected to the screw mechanism, and a motor 40 that drives the screw mechanism. A lifting device 50 is provided in the inner ring of the circular circulating track, wherein the motor is installed on a lifting module 51 of the lifting device, a first permanent magnetic coupling assembly 41 is installed on the motor shaft, a second permanent magnetic coupling assembly 42 is installed on one end of the screw of the screw mechanism, and the first permanent magnetic coupling assembly is used in conjunction with the second permanent magnetic coupling assembly.

[0040] Several stations are arranged along the circular circulation track 10, including loading and unloading stations and processing / assembly stations. A slot-shaped photoelectric sensor is arranged at the loading and unloading station, and the clamping and positioning device 30 is provided with a light shielding sheet 60 used in conjunction with the slot-shaped photoelectric sensor. When the light shielding sheet enters the slot-shaped photoelectric sensor, the clamping and positioning device displaced along the circular circulation track is suspended at the loading and unloading station; at the loading and unloading station, the descending first permanent magnetic coupling assembly 41 is attracted to the second permanent magnetic coupling assembly 42.

[0041] like Fig.11 The lifting device 50 includes a vertical bracket 52, a vertical guide rail 53 installed on the vertical bracket, and a vertical cylinder 54. The lifting module 51 is connected to the vertical cylinder and matched on the vertical guide rail.

[0042] Combination Figures 7 to 10 The screw mechanism 31 is arranged on the screw mechanism bracket 32, the screw mechanism bracket is provided with a guide rod 33, the guide rod is provided with a left displacement module 34, a right displacement module 35 and a middle fixed module 36, the left displacement module is driven by the screw 310, and a linkage mechanism is provided between the left displacement module and the right displacement module;

[0043] The clamping jaws include a left clamping jaw 340 installed on the left displacement module 34, a right clamping jaw 350 installed on the right displacement module 35, and a middle fixed clamping jaw 360 installed on the middle fixed module 36; the light shielding sheet 60 is connected to the right displacement module.

[0044] The linkage mechanism includes a plurality of follower modules 37 movably engaged on the guide rod 33, and a telescopic door structure 38. The plurality of follower modules are distributed between the left displacement module 34 and the middle fixed module 36, and between the middle fixed module and the right displacement module 35. The left end of the telescopic door structure is hinged to the left displacement module, the right end of the telescopic door structure is hinged to the right displacement module, the middle part of the telescopic door structure is hinged to the middle fixed module, the telescopic door structure is hinged to the follower module at the intersection of the X-shaped connecting rod between the left displacement module and the middle fixed module, and the telescopic door structure is hinged to the follower module at the intersection of the X-shaped connecting rod between the right displacement module and the middle fixed module.

[0045] like Figure 1 , Fig.12 The clamping and positioning device 30 is equipped with a manual positioning mechanism 70, which includes a vertical support frame 71 arranged in the inner circle of the annular circulation track 10, a horizontal support frame 72 installed on the vertical support frame and extending horizontally in the direction of the clamping jaws, and a plurality of rollers 73 installed on the horizontal support frame. The plurality of rollers are located between the left clamping jaw 340 and the right clamping jaw 350 and behind the left clamping jaw and the right clamping jaw.

[0046] like Figures 4 to 6 A displacement plate 21 is provided at the bottom of the clamping and positioning device 30, and a pair of pulleys 22 are provided at the bottom of the displacement plate. The displacement plate is connected to the transmission chain 20, and the pair of pulleys are against the inner side of the annular circulation track 10. The transmission chain is matched on the horizontal transmission sprocket 23, and the transmission sprocket is driven by the transmission chain motor 24.

[0047] In front of the clamping and positioning device 30, the worker places the product 90 from front to back between the left clamping jaw 340 and the middle fixed clamping jaw 360, and between the right clamping jaw 350 and the middle fixed clamping jaw 360. The rear side of the product abuts against the roller 73, and the product is initially positioned. Driven by the lifting device 50, the motor 40 descends, the first permanent magnetic coupling assembly 41 and the second permanent magnetic coupling assembly 42 are attracted, the motor drives the screw 310 to rotate, the screw drives the screw nut, the screw nut drives the left displacement module 34, and the left displacement module drives the left clamping jaw 340 to move toward the middle fixed clamping jaw 360. The left displacement module 34 drives the right displacement module 35 through the telescopic door structure 38, and the right displacement module drives the right clamping jaw 350 to move toward the middle fixed clamping jaw 360. In this way, the rotation of the screw rod 310 can drive the left clamp 340 and the right clamp 350 to synchronously displace toward each other, and the two products are clamped between the left clamp and the middle fixed clamp, and between the right clamp and the middle fixed clamp. Among them, since the intersection of the X-shaped connecting rod in the middle of the telescopic door structure 38 is hinged with the middle fixed module 36, the linear displacement of the left displacement module 34 can be converted into the rotation angle of the X-shaped connecting rod in the middle of the telescopic door structure, and the rotation angle of the X-shaped connecting rod in the middle of the telescopic door structure is then converted into the linear displacement of the right displacement module 35 through the right half of the telescopic door structure. Moreover, the linear displacement of the left displacement module is equal to the linear displacement of the right displacement module, but in the opposite direction. In this way, the left displacement module 34 and the right displacement module 35 are synchronously displaced toward each other.

[0048] Afterwards, driven by the lifting device 50, the motor 40 rises and resets, and the first permanent magnetic coupling assembly 41 is separated from the second permanent magnetic coupling assembly 42. The height of the motor after reset is higher than the clamping and positioning device 30, and the clamping and positioning device can move along the circular circulation track 10. After the product 90 is processed / assembled, the clamping and positioning device 30 moves one circle along the circular circulation track and returns to the loading and unloading station.

[0049] refer to Figure 1, the slot-shaped photoelectric sensor includes a first slot-shaped photoelectric sensor 61, a second slot-shaped photoelectric sensor 62, and a third slot-shaped photoelectric sensor 63 which are arranged in sequence. The clamping and positioning device 30 moves along the circular circulation track for one circle and returns to the loading and unloading station. The light shielding sheet 60 thereon first passes through the first slot-shaped photoelectric sensor 61, and then enters the second slot-shaped photoelectric sensor 62, and the transmission chain 20 pauses. The lifting device 50 is actuated, the motor 40 descends and rotates in the reverse direction, the first permanent magnetic coupling assembly 41 and the second permanent magnetic coupling assembly 42 are attracted, the motor 40 drives the screw rod 310 to rotate in the reverse direction, and the light shielding sheet 60 moves to the first slot-shaped photoelectric sensor 61 with the right displacement module 35, and the motor stops for a period of time before rotating forward. When the motor stops, the jaws open, the worker removes the product from the jaws, and then places the next product on the open jaws. After the motor 40 stops, it starts to rotate forward, driving the screw 310 to rotate, causing the left displacement module 34 and the right displacement module 35 to move toward each other, and the light shielding sheet 60 enters the second slot-shaped photoelectric sensor 62. The motor 40 stops, and the lifting device 50 raises the motor, and the transmission chain 20 transmits the clamping and positioning device 30. During the transmission process of the transmission chain, the light shielding sheet 60 passes through the third slot-shaped photoelectric sensor 63, and then passes through the first slot-shaped photoelectric sensor 61 and enters the second slot-shaped photoelectric sensor 62. The transmission chain 20 pauses. At this time, the clamping and positioning device 30 cycles once and returns to the loading and unloading station, and then repeats the above steps of unloading the product and loading the next product, including the lifting device 50 driving the motor 40 to descend, the motor driving the screw 310 to rotate in the opposite direction to open the clamping claw, and after the worker removes the product, the next product is placed. The motor drives the screw to rotate forward again, and after the clamping claw clamps the product, the clamping and positioning device 30 recycles and moves. This is repeated.

[0050] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An automated mechanism for clamping and positioning a product, comprising an annular circulation track (10), and a clamping and positioning device (30) displaced along the annular circulation track, wherein the clamping and positioning device comprises a screw mechanism (31), a clamping claw connected to the screw mechanism, and a motor (40) driving the screw mechanism, wherein: A lifting device (50) is provided in the inner circle of the annular circulation track, the motor is mounted on a lifting module (51) of the lifting device, a first permanent magnetic coupling assembly (41) is mounted on the motor shaft, a second permanent magnetic coupling assembly (42) is mounted on one end of the screw rod of the screw rod mechanism, and the first permanent magnetic coupling assembly and the second permanent magnetic coupling assembly are used in conjunction with each other.

2. The automated mechanism for product clamping and positioning as claimed in claim 1, characterized in that: A plurality of workstations are arranged along the circular circulation track (10), and the plurality of workstations include loading and unloading stations, at which slot-shaped photoelectric sensors are arranged, and the clamping and positioning device (30) is provided with a light shielding sheet (60) used in conjunction with the slot-shaped photoelectric sensor. When the light shielding sheet enters the slot-shaped photoelectric sensor, the clamping and positioning device displaced along the circular circulation track is suspended at the loading and unloading stations; at the loading and unloading stations, the descending first permanent magnetic coupling assembly (41) is attracted to the second permanent magnetic coupling assembly (42).

3. The automated product clamping and positioning mechanism according to claim 1, characterized in that: The lifting device (50) comprises a vertical support (52), a vertical guide rail (53) mounted on the vertical support, and a vertical cylinder (54); the lifting module (51) is connected to the vertical cylinder and is fitted on the vertical guide rail.

4. The automated mechanism for product clamping and positioning as claimed in claim 1, characterized in that: The screw mechanism (31) is arranged on a screw mechanism bracket (32), the screw mechanism bracket is provided with a guide rod (33), the guide rod is provided with a left displacement module (34), a right displacement module (35) and a middle fixed module (36), the left displacement module is driven by a screw (310), and a linkage mechanism is provided between the left displacement module and the right displacement module; The clamping jaws include a left clamping jaw (340) installed on a left displacement module (34), a right clamping jaw (350) installed on a right displacement module (35), and a middle fixed clamping jaw (360) installed on a middle fixed module (36); and a light shielding sheet (60) is connected to the right displacement module.

5. The automated mechanism for product clamping and positioning as claimed in claim 4, characterized in that: The linkage mechanism comprises a plurality of follower modules (37) movably engaged on the guide rod (33), and a telescopic door structure (38). The plurality of follower modules are distributed between the left displacement module (34) and the middle fixed module (36), and between the middle fixed module and the right displacement module (35). The left end of the telescopic door structure is hinged to the left displacement module, the right end of the telescopic door structure is hinged to the right displacement module, the middle of the telescopic door structure is hinged to the middle fixed module, the telescopic door structure is hinged to the follower module at an intersection of an X-shaped connecting rod between the left displacement module and the middle fixed module, and the telescopic door structure is hinged to the follower module at an intersection of an X-shaped connecting rod between the right displacement module and the middle fixed module.

6. The automated mechanism for product clamping and positioning as claimed in claim 4, characterized in that: The clamping positioning device (30) is equipped with a manual positioning mechanism (70), which includes a vertical support frame (71) arranged in the inner circle of the annular circulation track (10), a horizontal support frame (72) installed on the vertical support frame and extending horizontally in the direction of the clamping jaws, and a plurality of rollers (73) installed on the horizontal support frame, wherein the plurality of rollers are located between the left clamping jaw (340) and the right clamping jaw (350) and are located behind the left clamping jaw and the right clamping jaw.

7. The automated mechanism for product clamping and positioning as claimed in claim 1, characterized in that: A displacement plate (21) is provided at the bottom of the clamping and positioning device (30), a pair of pulleys (22) are provided at the bottom of the displacement plate, the displacement plate is connected to the transmission chain (20), the pair of pulleys abut against the inner side of the annular circulation track (10), the transmission chain is matched with a horizontal transmission sprocket (23), and the transmission sprocket is driven by a transmission chain motor (24).

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