Large-torque screw driving mechanism

Abstract

The utility model discloses a large-torque screw driving mechanism, and belongs to the technical field of screw mounting equipment. Comprising a rack, and a tightening gun and a clamp seat which can be slidably mounted on the rack in the same direction; a clamp pressing plate capable of being in butt joint with the clamp base is arranged on the rack, and a profiling station used for containing products is defined between the clamp base and the clamp pressing plate. A guide seat communicated with the profiling station is arranged on the side, opposite to the tightening gun, of the clamp seat, and a screwdriver head on the tightening gun can be embedded into the profiling station through the guide seat and is in butt joint with a nut on a product. The large-torque screw driving mechanism solves the problems that in the prior art, a screw driving mechanism is prone to shaking and instability due to position deviation of a workpiece in the working process.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw installation equipment, in particular to a large-torque screw driving mechanism. Background Art

[0002] Screw installation is a common task in industrial production. Traditional screwdriving mechanisms typically use a motor to directly drive the bit, resulting in very low torque (less than 10 N / M). These mechanisms are typically fixed to a robotic arm and tightened from top to bottom, making them ineffective for tightening high-torque bolts (actually requiring 174 N / M). Furthermore, traditional screwdriving mechanisms are prone to jitter and instability due to workpiece misalignment, impacting the quality and efficiency of screw installation. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-torque screw driving mechanism, which solves the problem that the screw driving mechanism in the prior art is prone to shaking and instability due to position deviation of the workpiece during operation.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a high-torque screw driving mechanism, comprising a frame and a tightening gun and a clamp seat that can be slidably mounted on the frame in the same direction;

[0005] The frame is provided with a clamp pressing plate capable of docking with the clamp seat, and a profiling station for placing products is formed between the clamp seat and the clamp pressing plate;

[0006] A guide seat communicated with the profiling station is provided on the side of the fixture seat opposite to the tightening gun. The screwdriver bit on the tightening gun can be embedded in the profiling station through the guide seat and docked with the nut on the product.

[0007] Optionally, it further includes a first dust collection module and a second dust collection module for cleaning impurities;

[0008] The first dust collection module includes a first dust collection seat that can be abutted against the clamp seat, and the clamp seat is provided with a plurality of dust discharge holes, one end of which can be connected to the first dust collection seat, and the other ends of the plurality of dust discharge holes are placed in the profiling station;

[0009] The section of the tightening gun connected to the screwdriver bit is in the shape of a hollow tube, and the outer periphery of the section is provided with an air hole communicating with the screwdriver bit;

[0010] The second dust collection module includes a second dust collection seat arranged around the outside of the air hole;

[0011] The first dust suction seat and the second dust suction seat can be connected to a negative pressure air source connected to the dust exhaust hole and the air hole.

[0012] Optionally, the clamp seat is arranged on the clamp mounting seat, and the tightening gun is arranged on the gun body clamp seat. The clamp mounting seat and the gun body clamp seat are respectively slidably connected to the frame through several groups of parallel linear guide rails, and the frame is provided with a first cylinder that can drive the clamp mounting seat to move and a second cylinder that can drive the gun body clamp seat to move.

[0013] Optionally, the gun body clamp is floatingly mounted on the piston rod end of the second cylinder through a plurality of groups of first springs, and the floating direction of the gun body clamp is the same as the driving direction of the second cylinder.

[0014] Optionally, the clamp seat is floatingly mounted on the clamp mounting seat through a plurality of groups of second springs, and the floating direction of the clamp seat is the same as the driving direction of the first cylinder.

[0015] Optionally, the clamp pressure plate is provided with a limiting protrusion capable of being embedded in the clamp seat.

[0016] Optionally, the first dust suction seat is arranged at the output end of the third cylinder, the third cylinder is arranged on the frame, and the third cylinder can drive the first dust suction seat to be attached to the clamp seat.

[0017] Compared to existing technologies, this new invention achieves the following advantages: When the clamp base and clamp pressure plate are separated, product placement and removal are facilitated; when the clamp base and clamp pressure plate are connected, they effectively clamp and secure the product, confirming its position. Simultaneously, the tightening gun moves along a fixed trajectory until it precisely engages the nut on the product. The clamping action of the clamp base and clamp pressure plate keeps the tightening gun in place relative to the product, ensuring stability while increasing output torque to meet the tightening requirements of high-torque bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a structural diagram of a high-torque screw driving mechanism in a preferred embodiment of the present invention;

[0020] Figure 2 This is a side structural diagram of a high-torque screw driving mechanism in a preferred embodiment of the utility model;

[0021] Figure 3 In the preferred embodiment of the present utility model Figure 2 Schematic diagram of the cross-sectional structure at AA;

[0022] Figure 4 This is a front structural diagram of a high-torque screw driving mechanism in a preferred embodiment of the present invention;

[0023] Figure 5 In the preferred embodiment of the present utility model Figure 4 Schematic diagram of the cross-sectional structure at BB;

[0024] Figure 6 This is a structural diagram of a preferred embodiment of the present invention in which the fixture base is floatingly installed on the fixture mounting base;

[0025] Among them, 1. Frame; 2. Tightening gun; 201. Air hole; 3. Clamp seat; 301. Dust exhaust hole; 4. Clamp pressure plate; 401. Limiting protrusion; 5. Guide seat; 6. Batch head; 7. First dust suction seat; 8. Second dust suction seat; 9. Clamp mounting seat; 10. Gun body clamp seat; 11. First cylinder; 12. Second cylinder; 13. First spring; 14. Second spring; 15. Third cylinder. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0027] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] like Figures 1-6As shown, a high-torque screw-driving mechanism includes a frame 1 and a tightening gun 2 and a clamp seat 3 that can be slidably mounted on the frame 1 in the same direction. The frame 1 is provided with a clamp pressure plate 4 that can dock with the clamp seat 3. A profiling station for placing products is formed between the clamp seat 3 and the clamp pressure plate 4; a guide seat 5 that communicates with the profiling station is provided on the side of the clamp seat 3 opposite to the tightening gun 2, and a screw bit 6 on the tightening gun 2 can be embedded in the profiling station through the guide seat 5 and dock with the nut on the product.

[0029] Specifically, the clamp base 3 is separated from the clamp plate 4, facilitating easy product placement and removal. The clamp base 3 and clamp plate 4 are docked together, effectively clamping and securing the product. Simultaneously, the tightening gun 2 moves along a fixed trajectory until it precisely aligns with the nut on the product. The clamping action of the clamp base 3 and clamp plate 4 keeps the tightening gun 2 fixed relative to the product, ensuring stability while increasing output torque to meet the tightening requirements of high-torque bolts.

[0030] Further, such as Figure 1-Figure 5 As shown, in order to clean debris and the like that may appear during the tightening process of the high-torque bolts, the high-torque screw driving mechanism further includes a first dust collection module and a second dust collection module for cleaning impurities.

[0031] Specifically, the first dust collection module includes a first dust collection base 7 that rests against the fixture base 3. The fixture base 3 is provided with several dust discharge holes 301, one end of which is connected to the first dust collection base 7. The other ends of the dust discharge holes 301 are located within the profiling station, primarily located near the outer periphery of the bolts to be tightened on the product. Furthermore, in this technical solution, the section of the tightening gun 2 that connects to the bit 6 is hollow and tubular, with air holes 201 disposed on its periphery for communication with the bit 6. The second dust collection module includes a second dust collection base 8 positioned outside of the air holes 201. Both the first and second dust collection bases 7 and 8 are connected to a negative pressure air source connected to the dust discharge holes 301 and air holes 201. This connection between the first and second dust collection bases 7 and 8 creates a small negative pressure zone around the bit 6 and the nut on the product, allowing debris and other impurities to be discharged through the dust discharge holes 301 and air holes 201.

[0032] The above, such as Figure 1 As shown, in order to ensure the displacement accuracy of the clamp seat 3 and the tightening gun 2, the clamp seat 3 is set on the clamp mounting seat 9, and the tightening gun 2 is set on the gun body clamp seat 10. The clamp mounting seat 9 and the gun body clamp seat 10 are respectively slidably connected to the frame 1 through several groups of parallel linear guide rails.

[0033] The frame 1 is equipped with a first cylinder 11 capable of driving the movement of the fixture mount 9 and a second cylinder 12 capable of driving the movement of the gun body clamp 10. The first dust collector 7 is located at the output end of a third cylinder 15, which is also mounted on the frame 1 and is capable of driving the first dust collector 7 against the fixture mount 3. The tightening gun 2 is a conventional tool for tightening threaded fasteners such as bolts and nuts, and is capable of meeting the required torque for tightening nuts. The first, second, and third cylinders 11, 12, and 15 are conventional pneumatic actuators capable of repeatedly and accurately executing movement commands for the fixture mount 9 and the gun body clamp 10.

[0034] In this embodiment, the gun body mount 10 is floatingly mounted on the end of the piston rod of the second cylinder 12 via a plurality of sets of first springs 13, which serve to cushion the pressure when the bit 6 engages the nut on the product. Specifically, the first spring 13 can be mounted on a locating pin, which is movably mounted on a plate. One end of the locating pin is restrained by the plate, and the other end is threadedly connected to the piston rod of the second cylinder 12, allowing the plate to slide along the locating pin. The plate and the piston rod are elastically supported by the first spring 13. The plate can be mounted on the gun body mount 10, and one end of the locating pin can also be embedded in the gun body mount 10, so that the floating direction of the gun body mount 10 is the same as the driving direction of the second cylinder 12.

[0035] At the same time, the clamp base 3 is floatingly mounted on the clamp mounting base 9 via several sets of second springs 14, which are used to cushion the impact when the clamp base 3 and the clamp pressure plate 4 are connected. Specifically, the second springs 14 can also be mounted on a positioning pin that can be threadedly connected to the clamp mounting base 9. The positioning pin is installed on the clamp mounting base 9, and the second springs 14 are elastically supported between the end of the positioning pin and the clamp base 3, so that the floating direction of the clamp base 3 is the same as the driving direction of the first cylinder 11.

[0036] Furthermore, in order to prevent the buffer clamp seat 3 from precisely docking with the clamp pressure plate 4 , a limiting protrusion 401 capable of being embedded in the clamp seat 3 is provided on the clamp pressure plate 4 .

[0037] Working principle: First, the first cylinder 11 drives the fixture base 3 away from the fixture pressure plate 4, and the second cylinder 12 drives the tightening gun 2 away from the fixture base 3. Then, the product is manually placed on the fixture base 3 to form the profiling position. Then, the first cylinder 11 drives the fixture base 3 to connect with the fixture pressure plate 4, and the second cylinder 12 drives the screwdriver bit 6 on the tightening gun 2 to connect with the nut on the product. Then, the negative pressure air source of the first dust suction base 7 and the second dust suction base 8 is connected, and the pneumatic tightening gun 2 can then be used to tighten the nut. After completion, the first cylinder 11 drives the fixture base 3 away from the fixture pressure plate 4, and the second cylinder 12 drives the tightening gun 2 away from the fixture base 3 to remove the product and wait for the next operation.

[0038] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-torque screw driving mechanism, characterized by: It comprises a frame (1) and a tightening gun (2) and a clamp seat (3) that can be slidably mounted on the frame (1) in the same direction; The frame (1) is provided with a clamp pressing plate (4) capable of docking with the clamp seat (3), and a contouring station for placing products is formed between the clamp seat (3) and the clamp pressing plate (4); A guide seat (5) communicating with the profiling station is provided on the side of the fixture seat (3) opposite to the tightening gun (2). The bit (6) on the tightening gun (2) can be embedded in the profiling station through the guide seat (5) and docked with the nut on the product.

2. The high-torque screw driving mechanism according to claim 1, characterized in that: It also includes a first dust collection module and a second dust collection module for cleaning impurities; The first dust collection module comprises a first dust collection seat (7) capable of being abutted against the clamp seat (3), and the clamp seat (3) is provided with a plurality of dust discharge holes (301) one end of which can be communicated with the first dust collection seat (7), and the other ends of the plurality of dust discharge holes (301) are placed in the profiling station; A section of the tightening gun (2) connected to the screwdriver bit (6) is in the shape of a hollow tube, and an air hole (201) communicating with the screwdriver bit (6) is provided on the outer periphery of the section; The second dust collection module comprises a second dust collection seat (8) arranged outside the air hole (201); The first dust suction seat (7) and the second dust suction seat (8) can be connected to a negative pressure air source that is in communication with the dust discharge hole (301) and the air hole (201).

3. The high-torque screw driving mechanism according to claim 1, characterized in that: The clamp seat (3) is arranged on the clamp mounting seat (9), and the tightening gun (2) is arranged on the gun body clamp seat (10). The clamp mounting seat (9) and the gun body clamp seat (10) are respectively slidably connected to the frame (1) through a plurality of groups of parallel linear guide rails, and the frame (1) is provided with a first cylinder (11) capable of driving the clamp mounting seat (9) to move and a second cylinder (12) capable of driving the gun body clamp seat (10) to move.

4. The high-torque screw driving mechanism according to claim 3, characterized in that: The gun body clamp (10) is floatingly mounted on the piston rod end of the second cylinder (12) through a plurality of groups of first springs (13), and the floating direction of the gun body clamp (10) is the same as the driving direction of the second cylinder (12).

5. The high-torque screw driving mechanism according to claim 3, characterized in that: The clamp seat (3) is floatingly mounted on the clamp mounting seat (9) via a plurality of groups of second springs (14), and the floating direction of the clamp seat (3) is the same as the driving direction of the first cylinder (11).

6. The high-torque screw driving mechanism according to claim 1, characterized in that: The clamp pressing plate (4) is provided with a limiting protrusion (401) capable of being embedded in the clamp seat (3).

7. The high-torque screw driving mechanism according to claim 2, characterized in that: The first dust suction seat (7) is arranged at the output end of the third cylinder (15), the third cylinder (15) is arranged on the frame (1), and the third cylinder (15) can drive the first dust suction seat (7) to be attached to the clamp seat (3).

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