Screw taking clamp

Abstract

The utility model provides a screw taking clamp, and relates to the technical field of clamp structures. Comprising a connecting body suitable for being connected with a mechanical arm, and a material taking clamp and a suction cup assembly are arranged on the two sides of the connecting body correspondingly; the material taking clamp comprises a first row of clamp sets and a second row of clamp sets, and the first row of clamp sets and the second row of clamp sets are each provided with a plurality of clamp assemblies arranged at equal intervals so that the screws arranged on the material placing plate at intervals can be clamped into injection molding equipment. The suction cup assembly comprises a first row of suction cup sets and a second row of suction cup sets, and the first row of suction cup sets and the second row of suction cup sets are each provided with a plurality of suction cup devices arranged at equal intervals and used for sucking out screws from injection molding equipment. And a telescopic mechanism is arranged on the suction cup assembly to control the suction cup assembly to stretch out and draw back relative to the connecting main body. According to the scheme, the clamping efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp structures, in particular to a screw material taking clamp. Background Art

[0002] Utility model CN210233768U discloses an automated loading and unloading device for screw encapsulation, which can separate the finished product and the nozzle, realizing unmanned production. This not only improves production efficiency but also reduces labor costs, greatly reducing product costs. However, in this solution, on the one hand, the screws are loaded one by one, which reduces production efficiency. On the other hand, the number of screws that the manipulator can clamp at one time is only 1 to 2, and the transmission efficiency is low, resulting in low efficiency in batch production. At the same time, because the clamp is difficult to extend into the injection molding equipment to clamp the screws after the screws are encapsulated, another clamping device is often required for unloading and taking out the materials, resulting in increased equipment costs and low efficiency. Utility Model Content

[0003] The utility model discloses a screw picking fixture, which aims to solve the problem of low efficiency of the existing manipulator feeding mechanism.

[0004] The utility model adopts the following scheme:

[0005] A screw picking fixture comprises a connecting body suitable for connection to a robot arm, and a picking fixture and a suction cup assembly are respectively provided on both sides of the connecting body; wherein, the picking fixture comprises a first row of fixture groups and a second row of fixture groups, and the first row of fixture groups and the second row of fixture groups are respectively provided with a plurality of fixture assemblies arranged at equal intervals, so as to respectively clamp the screws arranged at intervals on the swing plate into the injection molding equipment; the suction cup assembly comprises a first row of suction cup groups and a second row of suction cup groups, and the first row of suction cup groups and the second row of suction cup groups are respectively provided with a plurality of suction cup devices arranged at equal intervals to suck the screws out of the injection molding equipment; a telescopic mechanism is provided on the suction cup assembly to control the telescopic movement of the suction cup assembly relative to the connecting body.

[0006] Furthermore, a first shearing assembly and a second shearing assembly are provided between the first row of suction cup groups and the second row of suction cup groups, and the first shearing assembly and the second shearing assembly are suitable for cutting off the connecting flow channel when the first row of suction cup groups and the second row of suction cup groups suck the screws that have been injection molded.

[0007] Furthermore, the position of the clamp assembly on the connecting body is adjustable.

[0008] Furthermore, the clamp assembly includes two clamping jaws suitable for clamping on the screw rod of the screw, and a pressing plate is provided between the two clamping jaws to press the screw head between the two clamping jaws when clamping the screw.

[0009] Furthermore, the distance between the pressing plate and the inner side surface of the clamping jaw is equal to the height of the screw head.

[0010] Furthermore, the clamp assembly and the telescopic mechanism are both connected to a vacuum air source.

[0011] Beneficial effects:

[0012] This solution sets up two rows of clamp groups and two rows of suction cup assemblies. The clamp assemblies on the two rows of clamp groups are arranged at the same intervals, so all the screws on the swinging structure can be clamped and taken out in batches. The clamp assemblies arranged at a wider interval can also grab the screws arranged at a narrower interval, thereby improving the grabbing efficiency; by setting the first row of suction cup groups and the second row of suction cup groups with the same arrangement on the other side of the connecting body, the injection molding equipment can be extended to suck out the injection-molded screws; the same material-retrieving clamp can be used to achieve loading and unloading clamping, thereby improving efficiency and reducing equipment costs; further, the suction cup assembly is connected to a telescopic mechanism to drive the suction cup assembly to extend and retract relative to the connecting body, which can increase the stroke of the suction cup assembly and help the suction cup assembly to extend into the injection molding equipment for suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a screw picking fixture installed in a screw loading and unloading device according to an embodiment of the present utility model;

[0014] Figure 2 This is a structural diagram of the cooperation between the double-track conveying mechanism and the swinging mechanism of a screw loading and unloading device according to an embodiment of the present utility model;

[0015] Figure 3 This is another structural diagram of the cooperation between the double-track conveying mechanism and the swinging mechanism of a screw loading and unloading device according to an embodiment of the present utility model;

[0016] Figure 4 This is a structural diagram of a screw material removal fixture according to an embodiment of the present utility model;

[0017] Figure 5 This is a structural schematic diagram of a screw material removal fixture from another perspective according to an embodiment of the present utility model;

[0018] icon:

[0019] Vibrating plate 1, double-track conveying mechanism 2, first conveying track 21, second conveying track 22, transmission trough 23, material blocking mechanism 24, material swinging mechanism 3, material swinging plate 31, material swinging trough 311, transverse movement mechanism 32, lifting mechanism 33, manipulator material picking mechanism 4, first row of clamp group 41, second row of clamp group 42, suction cup assembly 43, first row of suction cup group 431, second row of suction cup group 432, telescopic mechanism 44, clamp assembly 45, clamping claw 451, pressure plate 452, first shearing assembly 461, second shearing assembly 462, connecting body 47, material receiving slide 51, assembly line 52, screw 6, manipulator 7. DETAILED DESCRIPTION

[0020] Combine Figures 1 to 5 As shown, this embodiment provides a screw picking fixture, including a connecting body 47 suitable for connection to a manipulator, and a picking fixture and a suction cup assembly 43 are respectively provided on both sides of the connecting body 47; wherein, the picking fixture includes a first row of clamp groups 41 and a second row of clamp groups 42, and the first row of clamp groups 41 and the second row of clamp groups 42 are respectively provided with a number of clamp assemblies arranged at equal intervals, so as to respectively clamp the screws arranged at intervals on the swing plate into the injection molding equipment (not shown); the suction cup assembly 43 includes a first row of suction cup groups 431 and a second row of suction cup groups 432, and the first row of suction cup groups 431 and the second row of suction cup groups 432 are respectively provided with a number of suction cup devices arranged at equal intervals for sucking screws out of the injection molding equipment; a telescopic mechanism 44 is provided on the suction cup assembly to control the telescopic movement of the suction cup assembly 43 relative to the connecting body 47.

[0021] In this embodiment, the screw 6 includes a screw head and a screw rod. An injection molding device is provided at the downstream end of the screw material removal fixture for injection molding the screw head to form an adjustable foot product. The injection molding device is an existing device capable of injection molding the screw head, and its structure and principle are not further described.

[0022] The screw picking fixture described in this embodiment is suitable for being installed on the manipulator of the screw loading and unloading equipment. Specifically, the screw loading and unloading equipment includes: a vibration plate 1, a double-track conveying mechanism 2, a swinging mechanism 3, and a manipulator picking mechanism 4; wherein, the double-track conveying mechanism 2 is connected to the vibration plate 1, and includes a first conveying track 21 and a second conveying track 22 arranged in parallel; the first conveying track 21 and the second conveying track 22 are suitable for synchronously conveying two rows of screws 6 to the swinging mechanism 3; the swinging mechanism 3 includes a transverse mechanism 32, a swinging plate 31 arranged on the transverse mechanism 32, and a lifting mechanism 33 arranged below the swinging plate 31, wherein the transverse The shifting mechanism 32 is suitable for driving the swing plate 31 to move gradually in front of the discharge port of the first conveying track 21 and the second conveying track 22; the swing plate 31 is provided with a plurality of receiving grooves facing the double-track conveying mechanism 2 at equal intervals to receive the screws 6 transported from the double-track conveying mechanism; the lifting mechanism 33 is suitable for lifting all the screws when the manipulator picking mechanism 4 picks up the material so as to facilitate the manipulator picking mechanism 4 to clamp them; the manipulator picking mechanism 4 includes a manipulator 7 and the screw picking clamp, and the connecting body 47 is used to connect the manipulator 7.

[0023] Combine Figures 1 to 3 As shown, in this embodiment, the vibrating plate 1 is an existing device, connected to a dual-track conveyor rail for synchronously conveying two sets of screws 6. The dual-track conveyor rails include a first conveyor rail 21 and a second conveyor rail 22. Each of the first and second conveyor rails 21 and 22 is provided with a transmission slot 23. After being acted upon by the vibrating plate 1, the screws 6 enter the transmission slot 23, with the screw heads emerging from the transmission slot 23 and the screw shafts extending below the transmission slot 23. During the vibration process, the screws 6 are gradually conveyed toward the ends of the conveyor rails. The first and second conveyor rails 21 and 22 can be tilted downward toward the swing mechanism 3 to facilitate downward conveyance of the screws 6 to the swing mechanism 3. A stop mechanism 24 is provided at the ends of the first and second conveyor rails 21 and 22 to control the delivery of the screws. Specifically, the stop mechanism 24 includes a transverse stopper disposed below the dual-track conveyor rails. The transverse stopper is adapted to block the delivery slots of the first and second conveyor rails 21 and 22 to prevent the delivery of the screws 6. This solution can control the output of screws as needed, and can also prevent the mechanism from getting stuck due to continued output of screws 6 after the swing mechanism 3 is filled with screws 6.

[0024] Combine Figures 2 to 3As shown, the swing mechanism 3 includes a transverse movement mechanism 32, a swing plate 31 disposed on the transverse movement mechanism 32, and a lifting mechanism 33 disposed below the swing plate 31. The transverse movement mechanism 32 is equipped with a servo motor for driving the swing plate 31 to achieve step-by-step movement. The swing plate 31 is disposed in front of the end position of the dual-track conveyor mechanism 2. An open swing trough 311 is provided on the side of the swing plate 31 facing the dual-track conveyor mechanism 2. The height of the swing plate 31 is the same as that of the conveyor trough and is close to the conveyor trough. The sliding direction of the swing plate 31 is perpendicular to the transmission direction of the screw 6. When the swing trough 311 moves to align with the conveyor trough, the screw 6 enters the swing trough 311. The swing plate 31 continues to move, aligning the rear swing troughs 311 with the conveyor trough one after another, so that each swing trough 311 is filled with a screw 6. In this embodiment, the spacing between the transmission grooves of the first conveying track 21 and the second conveying track 22 is equal to the spacing between the three adjacent material receiving grooves, and the double-track conveying mechanism 2 conveys the two screws to the two spaced material receiving grooves at the same time in an interlaced manner. When the first material trough 31 is moved to align with the first conveying track 21, the transverse stop block is moved away to allow the screw 6 to be output. At this time, the first conveying track 21 and the second conveying track 22 align the first material trough with the third material and convey a screw 6 respectively. Then the material trough 31 moves forward by the spacing of the material trough 311, so that the second material trough is aligned with the first conveying track 21. At this time, the second conveying track 22 is aligned with the fourth conveying track, and the loading of the first four material troughs 311 is completed. Then the material trough 31 continues to move until the fifth material trough is aligned with the first conveying track 21, and the cycle is repeated until screws 6 are placed in all the material troughs 311. Through this setting, the dual-track conveying mechanism 2 can load materials at the same time, and the distance between the swing troughs 311 can be smaller than the distance between the first conveying track 21 and the second conveying track 22, so that more swing troughs 311 can be arranged on the same swing plate 31 to place more screws 6 at the same time, which helps to improve efficiency.

[0025] After the swing plate 31 is filled with screws 6, it moves to the material picking area of ​​the manipulator material picking mechanism 4 under the drive of the transverse movement mechanism 32. At this time, the lifting mechanism 33 arranged under the swing plate 31 works to lift all the screws to a preset height so that the screw heads are exposed on the surface of the swing plate 31 to facilitate subsequent grabbing.

[0026] Combine Figure 4 and Figure 5As shown, the screw-removing fixture includes a first row of fixture groups 41 and a second row of fixture groups 42. The first and second rows of fixture groups 41 and 42 are each provided with a plurality of equally spaced fixture assemblies to respectively remove screws spaced apart from the swing plate and place them into the injection molding device. The suction cup assembly includes a first row of suction cup groups 431 and a second row of suction cup groups 432. The first and second rows of suction cup groups 431 and 432 are each provided with a plurality of equally spaced suction cup devices to remove screws from the injection molding device. The suction cup assembly is provided with a telescopic mechanism 44 to control its extension and retraction relative to the connecting body 47. The telescopic mechanism 44 can be a telescopic cylinder.

[0027] The first row of clamp groups 41 and the second row of clamp groups 42 are each formed by an arrangement of a plurality of clamp assemblies 45. Specifically, in this embodiment, the spacing between two adjacent clamp assemblies 45 in each row of clamp groups is equal to the spacing between three adjacent material receiving troughs, so as to respectively clamp and remove the spaced screws 6 from the swing plate 31. Here, the clamp assemblies 45 on the two rows of clamp groups are arranged in opposite positions and have the same spacing, and the distance between adjacent clamp assemblies 45 is equal to the distance between three adjacent material receiving troughs. During clamping, the first row of clamp groups 41 can simultaneously clamp the screws on the first swing trough, the third swing trough, the fifth swing trough, ... (i.e. corresponding to the positions of the odd-numbered swing troughs). After the first row of clamp groups 41 are clamped, the manipulator controls the material-picking clamp to move forward and backward and left and right a certain distance so that the second row of clamp groups 42 are aligned with the screws on the second swing trough, the fourth swing trough, the sixth swing trough, ... and clamp them (i.e. corresponding to the even-numbered swing troughs), thereby achieving the effect of clamping all the screws on the swing plate 31 at the same time and improving the efficiency of clamping. In this embodiment, the manipulator can adopt an existing five-axis manipulator, etc., to control the material-picking clamp to switch between the swing plate 31 and the injection molding equipment to realize the handling of materials. Preferably, the position of the clamp assembly 45 on the connecting body 47 is adjustable, and the position adjustment can be achieved by loosening and tightening the connecting bolts.

[0028] The suction cup assembly 43 is arranged on the other side of the connecting body 47 to be used for removing the processed screws after the injection molding equipment is finished. In this embodiment, the first row of suction cup groups 431 and the second row of suction cup groups 432 are arranged in parallel, and the arrangement spacing is the same as the arrangement spacing of the clamp group. Specifically, a plurality of suction cup devices are arranged on the first row of suction cup groups 431 and the second row of suction cup groups 432, respectively, and the spacing between adjacent suction cup devices is the same as the spacing between adjacent clamp assemblies. The suction cup assembly 43 is arranged on the opposite side of the clamp group, and the two do not affect each other. The switching of the suction cup assembly 43 and the clamp group is controlled by the rotation of the manipulator. Furthermore, the suction cup assembly 43 is connected to a telescopic mechanism 44, and the telescopic mechanism 44 is suitable for driving the suction cup assembly 43 to perform telescopic activities relative to the connecting body 47, so that the suction cup assembly 43 has a larger activity stroke, so that it can enter the injection molding equipment for suction. Since the height of the screw head increases after the injection molding, the clamp assembly 45 cannot be used to clamp the processed screw head. Therefore, this solution uses suction cup assemblies with the same arrangement to absorb the processed screws. When loading, since a certain force is required to insert the screws into the injection mold, if the suction cup assembly is used for loading, it is easy to cause the screws to become unstable and fall. Therefore, the clamp assembly 45 is used to clamp the loading to improve stability. Therefore, this solution uses the clamp assembly 45 for loading and the suction cup assembly for unloading to pick up the screws.

[0029] In one embodiment, a first shearing assembly 461 and a second shearing assembly 462 are provided between the first row of suction cups 431 and the second row of suction cups 432. The first shearing assembly 461 and the second shearing assembly 462 are adapted to shear the connecting flow channel when the first row of suction cups 431 and the second row of suction cups 432 suck the screws that have been injection molded. This arrangement allows the connecting flow channel to be sheared after injection molding to facilitate unloading, preventing large areas of material from becoming stuck in the unloading mechanism and causing accumulation. Here, the first shearing assembly 461 and the second shearing assembly 462 can be configured in a scissor-like shape and connected to a vacuum air source to provide shearing power.

[0030] To improve the stability of the clamp assembly 45 in clamping the screw, the clamp assembly 45 is further configured. Specifically, the clamp assembly 45 includes two clamping jaws 451 suitable for clamping the screw rod. A pressure plate 452 is provided between the two clamping jaws 451 to press the screw head between the two clamping jaws 451 when clamping the screw. The distance between the pressure plate 452 and the inner side of the clamping jaws 451 is equal to the height of the screw head. Therefore, when the screw is clamped, the pressure plate 452 presses against the top surface of the screw head. When the screw is placed in the injection mold for pressing, the pressure plate 452 improves the stability of the screw and prevents the screw from moving up and down.

[0031] This embodiment also includes a material unloading mechanism, which includes a material receiving slide 51 and a magnetic roller assembly line 52. The material receiving slide 51 is suitable for receiving the processed screws carried by the suction cup assembly 43 of the manipulator picking mechanism 4, and the magnetic roller assembly line is suitable for unloading the processed screws. In this embodiment, the clamp assembly 45 and the telescopic mechanism 44 are both connected to a vacuum air source to provide power.

[0032] Through the solution of this embodiment, loading and unloading of materials can be achieved by using one material taking fixture assembly 45, thereby reducing equipment costs.

[0033] It should be understood that the above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

[0034] The above description of the drawings used in the implementation manner only shows certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

Claims

1. A screw retrieving fixture, comprising a connecting body suitable for connecting to a manipulator, characterized in that: A material taking fixture and a suction cup assembly are respectively provided on both sides of the connecting body; The material taking fixture includes a first row of fixture groups and a second row of fixture groups, and the first row of fixture groups and the second row of fixture groups are respectively provided with a plurality of fixture components arranged at equal intervals, so as to respectively clamp the screws arranged at intervals on the swing plate into the injection molding equipment; The suction cup assembly includes a first row of suction cup groups and a second row of suction cup groups, wherein the first row of suction cup groups and the second row of suction cup groups are respectively provided with a plurality of suction cup devices arranged at equal intervals for sucking out screws from the injection molding equipment; The suction cup assembly is provided with a telescopic mechanism to control the suction cup assembly to telescope relative to the connecting body.

2. The screw material removal fixture according to claim 1, characterized in that: A first shearing assembly and a second shearing assembly are provided between the first row of suction cup groups and the second row of suction cup groups. The first shearing assembly and the second shearing assembly are suitable for cutting off the connecting flow channel when the first row of suction cup groups and the second row of suction cup groups suck the screws that have been injection molded.

3. The screw material removal fixture according to claim 1, characterized in that: The position of the clamp assembly on the connecting body is adjustable.

4. The screw material removal fixture according to claim 1, characterized in that: The clamp assembly comprises two clamping jaws adapted to clamp the screw rod of a screw, and a pressing plate is provided between the two clamping jaws to press the screw head between the two clamping jaws when clamping the screw.

5. The screw material removal fixture according to claim 4, characterized in that: The distance between the pressing plate and the inner side surface of the clamping jaw is equal to the height of the screw head.

6. The screw material removal fixture according to claim 1, characterized in that: The clamp assembly and the telescopic mechanism are both connected to a vacuum air source.

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