Mechanical arm for machining

Abstract

The mechanical arm for machining comprises a top plate and a protruding block, the protruding block is fixedly connected to the bottom end of the top plate, four electric telescopic rods and a rotary torsion rod are evenly and fixedly installed on the side wall of the protruding block in the circumferential direction, so that the protruding block can be clamped into two arc-shaped grooves, and unstable material clamping can be prevented; the corresponding torsion bar is rotated to pass through the space between the two connecting plates, then the L-shaped plate can be disassembled, when heavy materials need to be clamped, oil is continuously added into the oil cylinder through a pump, the friction plate is driven to move upwards along with the oil cylinder, the friction effect between the friction plate and the materials is increased, the heavy materials can be clamped, and the work efficiency is improved. When the friction plate moves upwards, the first U-shaped block also moves upwards along with the friction plate, at the moment, under the action of the hinge rod, the base plate is driven to extend out of the collecting groove along the inner bottom face of the collecting groove to be cushioned at the bottom end of materials, the supporting effect is achieved, the materials can be prevented from falling off, and harm to operators is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mechanical arm, concretely relates to a mechanical arm for machining. BACKGROUND

[0002] The mechanical arm for machining is an automatic mechanical device, which is mainly used for various operations in the machining process, such as assembly, screw tightening, part insertion, glue dispensing, surface treatment, material handling, etc. It can efficiently complete the work with high repeatability through programming control, replace manual operation, and improve production efficiency and precision.

[0003] The mechanical arm for machining used to take materials is usually simply grabbed by a mechanical gripper. Since the surface of the mechanical gripper is very smooth, it is easy to cause the material to slip and damage the material when encountering heavy material, and it is also easy to cause the operator to be injured. Therefore, a mechanical arm with an anti-slip mechanical gripper and capable of automatically protecting the material when heavy material is taken is needed to reduce the risk of material falling and improve work efficiency. SUMMARY

[0004] In order to solve the above problems, the utility model provides a mechanical arm for machining.

[0005] The utility model is realized through the following technical schemes:

[0006] A mechanical arm for machining, comprising a top plate and a protrusion, the bottom end of the top plate is fixedly connected with the protrusion, the side wall of the protrusion is uniformly and fixedly installed with four electric telescopic rods, the output end of each electric telescopic rod is fixedly connected with a mechanical gripper, the top end of the four mechanical grippers is arranged in close contact with the bottom end of the top plate, a first through slot is formed in the mechanical gripper, an L-shaped plate is inserted into the first through slot in a sliding connection mode, the side wall of the L-shaped plate is arranged in close contact with the side wall of the corresponding mechanical gripper, a second through slot is formed in the mechanical gripper, an insertion block is inserted into the second through slot in a sliding connection mode, one side of the insertion block is fixedly connected with the side wall of the corresponding L-shaped plate, a spring barrel is fixedly installed on the other side of the insertion block, a T-shaped rod is slidably connected in the spring barrel, a first spring is sleeved on the T-shaped rod, the first spring is arranged in the spring barrel, a torsion bar is fixedly connected to one end of the T-shaped rod which penetrates out of the spring barrel, a connecting plate is arranged on both sides of the second through slot, the two connecting plates are symmetrically arranged, one side of each of the two connecting plates is fixedly connected with the inner wall of the mechanical gripper, an arc-shaped groove is formed in the other side of each of the two connecting plates, and the torsion bar is arranged in the arc-shaped groove in close contact therewith.

[0007] Preferably, a friction plate is attached to one side of the L-shaped plate, and a sliding groove is provided on one side of each of the four friction plates. The sliding groove is opened on the corresponding L-shaped plate, and an I-shaped rod is slidably connected in the sliding groove. A hydraulic cylinder is fixedly installed on the bottom surface of the sliding groove. The upper side wall of the I-shaped rod is fixedly connected to the friction plate, and the bottom end of the I-shaped rod extends into the hydraulic cylinder and is slidably connected to it.

[0008] Preferably, the L-shaped plate has a collection groove on its side wall, and each of the four collection grooves has a first U-shaped block. The side walls of the four first U-shaped blocks are fixedly connected to the corresponding friction plates. A slidingly connected pad is provided on the bottom surface of the collection groove. A cavity is provided in the pad, and a slidingly connected T-shaped guide rod is inserted into the cavity. A second spring is sleeved on the T-shaped guide rod and is located in the cavity. One end of the T-shaped guide rod that extends out of the cavity is fixedly connected to the inner wall of the collection groove. A second U-shaped block is fixedly connected to the top of the pad. A hinge rod is provided between the first U-shaped block and the second U-shaped block. The top end of the hinge rod is hinged to the first U-shaped block by a hinge pin, and the bottom end of the hinge rod is hinged to the second U-shaped block by a hinge pin. The hinge rod is inclined.

[0009] Compared with existing technologies, the advantages of this invention are as follows: Pulling the torsion bar allows it to pass between the two corresponding connecting plates, and then rotating the torsion bar allows it to be engaged in the two arc-shaped grooves, preventing the L-shaped plate from shifting and becoming unstable when clamping materials. When you want to remove the L-shaped plate, rotate the corresponding torsion bar to make it vertical, allowing it to pass between the two connecting plates and thus remove the L-shaped plate. When you need to clamp heavy materials, use a pump to continuously add oil to the cylinder, which allows the top of the I-shaped rod to slide upward in the slide groove, driving the friction plate to move upward along the side wall of the L-shaped plate, providing greater support for the friction plate and increasing the friction effect between the friction plate and the material, making it easier to clamp heavy materials. As the friction plate moves upward, the first U-shaped block also moves upward. At this time, under the action of the hinge rod, the second U-shaped block will move horizontally, causing the pad to extend out of the collection groove along the bottom surface of the collection groove, padding the bottom of the material and providing support, preventing the material from falling and reducing injury to the operator. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0011] Figure 2 The structure described in this utility model Figure 1 Cross-sectional view of AA;

[0012] Figure 3 The structure described in this utility model Figure 1 Enlarged diagram of B in the diagram;

[0013] Figure 4 The structure described in this utility model Figure 1Enlarged schematic view of the middle C;

[0014] Figure 5 The utility model discloses the structure Figure 1 The perspective view of.

[0015] In the drawing: roof 1, boss 2, electric telescopic rod 3, mechanical gripper 4, first through slot 5, L type board 6, second through slot 7, insert block 8, spring cylinder 9, T type rod 10, first spring 11, torsion bar 12, connecting plate 13, arc-shaped recess 14, friction plate 15, sliding slot 16, I-shaped rod 17, oil cylinder 18, collection groove 19, first U-shaped block 20, baffle plate 21, cavity 22, T type guide rod 23, second spring 24, second U-shaped block 25, hinged rod 26. Specific implementation

[0016] The utility model will be described in further detail below in conjunction with the specific implementation and the accompanying drawings:

[0017] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a mechanical arm for machining, including the top plate 1 and the lug 2, the bottom end of the top plate 1 is fixedly connected with the lug 2, the side wall of the lug 2 is circumferentially and uniformly fixedly installed with four electric telescopic rods 3, the output end of each electric telescopic rod 3 is fixedly connected with a mechanical gripper 4, the top end of the four mechanical grippers 4 is abuttingly arranged with the bottom end of the top plate 1, a first through slot 5 is formed in the mechanical gripper 4, an L-shaped plate 6 is inserted into the first through slot 5 in a sliding connection, the side wall of the L-shaped plate 6 is abuttingly arranged with the side wall of the corresponding mechanical gripper 4, a second through slot 7 is formed in the mechanical gripper 4, an insertion block 8 is inserted into the second through slot 7 in a sliding connection, one side of the insertion block 8 is fixedly connected with the side wall of the corresponding L-shaped plate 6, a spring barrel 9 is fixedly installed on the other side of the insertion block 8, a T-shaped rod 10 is slidably connected in the spring barrel 9, a first spring 11 is sleeved on the T-shaped rod 10, the first spring 11 is arranged in the spring barrel 9, a torsion bar 12 is fixedly connected to one end of the T-shaped rod 10 which penetrates out of the spring barrel 9, a connecting plate 13 is arranged on both sides of the second through slot 7, the two connecting plates 13 are symmetrically arranged, one side of each of the two connecting plates 13 is fixedly connected with the inner wall of the mechanical gripper 4, an arc-shaped recess 14 is formed in the other side of each of the two connecting plates 13, the torsion bar 12 is arranged in the arc-shaped recess 14 and is abuttingly arranged therewith, in use, the L-shaped plate 6 is inserted into the corresponding first through slot 5, the insertion block 8 is also inserted into the corresponding second through slot 7, then the torsion bar 12 is pulled to pass between the corresponding two connecting plates 13, at this time, the T-shaped rod 10 will slide in the corresponding spring barrel 9, the first spring 11 is compressed under stress, then the torsion bar 12 is rotated to be clamped into the two arc-shaped recesses 14, which can prevent the L-shaped plate 6 from being displaced and unstable when clamping materials, when the L-shaped plate 6 is to be removed, the corresponding torsion bar 12 is rotated to be vertical, under the action of the first spring 11, the torsion bar 12 will be pulled to move between the two connecting plates 13, so that it can pass through the second through slot 7, then the L-shaped plate 6 can be removed, according to the clamping force required for clamping materials, several mechanical grippers 4 can be selected for clamping, if the weight of the material is small, two mechanical grippers 4 can be selected, at this time, only the L-shaped plate 6 needs to be installed on the two mechanical grippers 4, after the L-shaped plate 6 is installed, the electric telescopic rod 3 is started to adjust the mechanical gripper 4 to move, so that the material can be gripped.

[0018] The L-shaped plate 6 is attached on one side with a friction plate 15, and four friction plates 15 are provided with a sliding groove 16 on one side, which is opened in the corresponding L-shaped plate 6. The sliding groove 16 is slidably connected with a I-shaped rod 17, and the inner bottom surface of the sliding groove 16 is fixedly installed with an oil cylinder 18. The upper side wall of the I-shaped rod 17 is fixedly connected with the friction plate 15, and the bottom end of the I-shaped rod 17 extends into the oil cylinder 18 and is slidably connected therewith. In use, the friction plate 15 can increase the friction and increase the anti-skid effect. When it is necessary to clamp heavy materials, the pump is used to continuously add oil to the oil cylinder 18, so that the top of the I-shaped rod 17 slides upward in the sliding groove 16, driving the friction plate 15 to move upward along the side wall of the L-shaped plate 6, which can provide greater support force to the friction plate 15, so that the friction effect between the friction plate 15 and the material is increased, facilitating the clamping of heavy materials.

[0019] The L-shaped plate 6 is attached on one side with a friction plate 15, and four friction plates 15 are provided with a sliding groove 16 on one side, which is opened in the corresponding L-shaped plate 6. The sliding groove 16 is slidably connected with a I-shaped rod 17, and the inner bottom surface of the sliding groove 16 is fixedly installed with an oil cylinder 18. The upper side wall of the I-shaped rod 17 is fixedly connected with the friction plate 15, and the bottom end of the I-shaped rod 17 extends into the oil cylinder 18 and is slidably connected therewith. In use, the friction plate 15 can increase the friction and increase the anti-skid effect. When it is necessary to clamp heavy materials, the pump is used to continuously add oil to the oil cylinder 18, so that the top of the I-shaped rod 17 slides upward in the sliding groove 16, driving the friction plate 15 to move upward along the side wall of the L-shaped plate 6, which can provide greater support force to the friction plate 15, so that the friction effect between the friction plate 15 and the material is increased, facilitating the clamping of heavy materials.

[0020] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A robotic arm for machining, comprising a top plate (1) and a protrusion (2), wherein the bottom end of the top plate (1) is fixedly connected to the protrusion (2), characterized in that: The sidewall of the protrusion (2) is uniformly fixed with four electric telescopic rods (3). Each electric telescopic rod (3) has a mechanical gripper (4) fixedly connected to its output end. The tops of the four mechanical grippers (4) are fitted against the bottom of the top plate (1). The mechanical gripper (4) has a first through groove (5). An L-shaped plate (6) is inserted into the first through groove (5). The sidewall of the L-shaped plate (6) is fitted against the sidewall of the corresponding mechanical gripper (4). The mechanical gripper (4) has a second through groove (7). A sliding block (8) is inserted into the second through groove (7). One side of the block (8) is fixedly connected to the sidewall of the corresponding L-shaped plate (6). (8) A spring cylinder (9) is fixedly installed on the other side. A T-shaped rod (10) is slidably connected inside the spring cylinder (9). A first spring (11) is sleeved on the T-shaped rod (10). The first spring (11) is set inside the spring cylinder (9). A torsion rod (12) is fixedly connected to one end of the T-shaped rod (10) that passes through the spring cylinder (9). A connecting plate (13) is provided on both sides of the second through groove (7). The two connecting plates (13) are symmetrically arranged. One side of the two connecting plates (13) is fixedly connected to the inner wall of the mechanical gripper (4). An arc-shaped groove (14) is opened on the other side of the two connecting plates (13). The torsion rod (12) is set in the arc-shaped groove (14) and fits against it.

2. The robotic arm for machining according to claim 1, characterized in that: A friction plate (15) is attached to one side of the L-shaped plate (6). A groove (16) is provided on one side of each of the four friction plates (15). The groove (16) is opened on the corresponding L-shaped plate (6). An I-shaped rod (17) is slidably connected in the groove (16). An oil cylinder (18) is fixedly installed on the bottom surface of the groove (16). The upper side wall of the I-shaped rod (17) is fixedly connected to the friction plate (15). The bottom end of the I-shaped rod (17) extends into the oil cylinder (18) and is slidably connected to it.

3. The robotic arm for machining according to claim 1, characterized in that: The L-shaped plate (6) has a collection groove (19) on its side wall. Each of the four collection grooves (19) is provided with a first U-shaped block (20). The side walls of the four first U-shaped blocks (20) are fixedly connected to the corresponding friction plates (15). A slidingly connected pad (21) is provided on the bottom surface of the collection groove (19). A cavity (22) is provided in the pad (21). A slidingly connected T-shaped guide rod (23) is inserted into the cavity (22). A second spring (24) is sleeved on the T-shaped guide rod (23). The second spring (24) is provided with... Placed inside the cavity (22), one end of the T-shaped guide rod (23) protruding outside the cavity (22) is fixedly connected to the inner wall of the collection groove (19). The top of the pad (21) is fixedly connected to the second U-shaped block (25). A hinge rod (26) is provided between the first U-shaped block (20) and the second U-shaped block (25). The top of the hinge rod (26) is hinged to the first U-shaped block (20) by a hinge pin, and the bottom of the hinge rod (26) is hinged to the second U-shaped block (25) by a hinge pin. The hinge rod (26) is set at an angle.

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