CN210711796U - A convenient automatic gripper for electrophoretic coating of small and medium-sized drum products - Google Patents

Abstract

The utility model discloses a convenient automatic clamping jaw for electrophoretic coating of small and medium-sized drum-shaped products. The clamping jaw comprises a shaft center, a terminal and a claw piece which are processed from materials with good electrical conductivity. A cylindrical through hole, a linear bearing is fixedly installed in the cylindrical through hole, the axis runs through the linear bearing, the upper part of the axis is sleeved with a spring, the top of the spring is provided with a spring cap, the bottom of the axis is fixedly connected with a bow tie, and the side wall of the terminal is provided with a Open slot and countersunk head screw hole, the thick claw piece passes through the hole on the bow tie, one end of the thick claw piece is in the open slot of the terminal, and is hinged with the terminal with the screw passing through the countersunk head screw hole, the other end of the thick claw piece is connected to the thin The claw pieces are fixedly connected; the clamping claw uses the deformation of the spring to push the axis to drive the bow to move along the second section of the thick claw piece, which realizes the effective control of the opening and closing of the claw piece. The mechanical mechanism is simple, the price is low, and it can be batched automated use.

Description

A convenient automatic gripper for electrophoretic coating of small and medium-sized drum products

technical field

The utility model relates to the technical field of automatic grabbing mechanisms, in particular to a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products.

Background technique

In recent years, with the continuous development of my country's automobile industry, light industry and home appliance market, there are more and more technical requirements for anti-corrosion, and electrophoretic coating technology has also been popularized in the above industries. At present, for the workpieces processed by the electrophoresis coating line, the clamping and disassembly of most small and medium-sized workpieces mainly rely on manual operations, which require a lot of manpower, which is time-consuming and labor-intensive, and the labor cost of the enterprise increases. The bodily harm is great, forcing businesses to adopt automation.

The process characteristics of the electrophoretic coating industry mainly include the need to conduct electricity during the electrophoresis process, and the paint film needs to be baked for a long time at high temperature (about 180 ℃) after electrophoresis. At present, in the entire industry, the tooling grippers for electrophoretic coating of small and medium-sized workpieces mainly include two-leg shrapnel, three-leg shrapnel, four-leg shrapnel, etc. Traditional alligator clips are used, but when using alligator clips to clamp the workpiece, it is easy to leave claw marks on the workpiece. In general, manual tooling is almost required, and the level of automation is low.

Most of the existing clamping jaws for clamping and dismantling of small and medium-sized drum-shaped products rely on the self-tension of thin-sheet rigid materials to clamp products, which can only be adapted to small and light products, which are relatively large and heavy and have smooth surfaces. The product cannot adapt well, and it is easy to cause defects such as product falling, scratches, and claw marks; secondly, the rigid and thin claw pieces are prone to irreversible deformation, resulting in insufficient tension of the claw pieces and unbalanced force between the claw pieces, and frequent manual labor is required. Correcting the shape of the jaws and adjusting the product to balance the tension between the jaws and the product, which intensifies the deformation of the jaws and reduces the service life; finally, when the product is tooled, the opening and closing actions of the jaws are uncontrollable, resulting in inability to Enables automated gripping and removal of products. Therefore, it is of great significance to try to improve the gripper for small and medium-sized barrel-shaped products to improve the level of painting automation.

Utility model content

The purpose of the utility model is to provide a convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products, so as to solve the problems in the prior art.

To achieve the above object, the utility model provides the following technical solutions:

A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products, the gripper comprises a shaft center, a terminal and a claw piece which are processed from materials with good electrical conductivity, and a cylindrical through hole is formed in the terminal. The linear bearing is fixedly installed in the cylindrical through hole, the shaft center runs through the linear bearing, the surface of the shaft center is smooth, and the mechanical strength is high. The use of the linear bearing at the contact part between the shaft center and the terminal can reduce the resistance of the shaft center in the process of repeated movement. To prevent the loss of spring elasticity in the process of clamping the product, to ensure the stability of the clamping product, without skewing and falling; the upper part of the shaft is covered with a spring, and the spring is a string steel spring. According to the size and weight of the product clamped by the clamping jaw, Determine the corresponding stroke and clamping force of the gripper, so as to select a spring with appropriate parameters (such as wire diameter, length, etc.); the top of the spring is provided with a spring cap, which mainly plays the role of fixing the spring and preventing the spring from being biased. The threaded hole at the top of the shaft is connected to the screw, and the screw is used to install and fix the spring cap; the bottom of the shaft is fixedly connected with the bow by the screw, the shaft drives the bow to move along the linear bearing, and the shaft transmits the spring force to the bow, and at the same time The spring together determines the stroke of the clamping jaws; there are several open slots and countersunk screw holes on the side wall of the terminal, several holes are opened on the bow, and there are several claws, and the claws are matched with the open slots of the terminal and the holes of the bow. Including thick claw piece and thin claw piece, the thick claw piece passes through the hole of the bow tie, the contact surface between the bow tie and the thick claw piece is smooth, and the mechanical strength is high; one end of the thick claw piece is located in the opening groove of the terminal, and is used to pass through the countersunk head screw hole. The screw is hinged with the terminal, and the other end of the thick claw is fixedly connected with the thin claw through several screws; the shaft is driven by the compression spring to slide along the second section of the thick claw to control the opening and closing range of the claw, and the thin claw The elasticity of the piece is combined with the rigidity of the thick claw piece, which not only maintains the rigidity of the entire clamping claw, but also utilizes the elasticity of the thin claw piece. To the buffering effect, when the jaws need to be repaired, only the thin jaws need to be replaced.

As an optimization, the terminal is cylindrical, the cylindrical through hole is opened in the center of the terminal, the linear bearing is fixedly installed in the cylindrical through hole, and there are three open slots on the side wall of the terminal, and the three open slots are evenly distributed at 3 × 120°. Ensure that the clamping force between the claws is balanced; a countersunk head screw hole is provided on the side wall of the terminal perpendicular to the middle position of the opening slot, one end of the thick claw piece is in the opening slot of the terminal, and the screw passing through the countersunk head screw hole is connected to the terminal. The terminal is hinged, the countersunk head screw hole is used to install the screw connecting the terminal and the thick claw piece; the countersunk head of the countersunk head screw hole is provided with a concave table, the screw head of the screw is placed in the concave table, and the concave table is used to place the screw of the screw head.

As an optimization, the bow tie is in the shape of a sheet, with a through hole in the center of the bow tie, and three holes on the top of the bow tie. The pieces have the function of positioning, so as to ensure the balance of the clamping force between the claws.

As an optimization, the shaft center is cylindrical, the diameter of the upper cylinder of the shaft center is smaller than the diameter of the lower cylinder, the upper part of the shaft center runs through the linear bearing, and the bottom of the shaft center and the central through hole of the bow tie are fixedly connected by screws.

As an optimization, there are three claws, including thick claws and thin claws.

As an optimization, the thick claw piece is composed of the first section, the second section and the third section. The thick claw piece has a smooth surface, good electrical conductivity and high mechanical strength. Extend and contract the stroke range of the claw piece; one end of the second section is fixedly connected with the end of the first section away from the terminal, the other end is fixedly connected with the end of the third section close to the bow tie, and the acute angle formed by the second section and the vertical line is 30-60°, which is convenient for the bow to slide along the second section of the thick claw piece and control the opening and closing range of the claw piece; the thick claw piece is provided with reinforcing ribs, which increase the strength of the thick claw piece, prevent the thick claw piece from being deformed, and at the same time The size and weight of the thick claws and bow ties are reduced; the end of the first segment close to the terminal is in the open slot, and is hinged to the terminal with a screw passing through the countersunk head screw hole.

As an optimization, the thin claw piece is in the shape of an isosceles triangle, the surface of the thin claw piece is smooth, the electrical conductivity is good, and it has certain elasticity and rigidity; On both sides, the thin claw piece is prevented from moving; the top corner of the isosceles triangle is bent into a claw tip, the folded edge and the claw tip are on the opposite sides of the thin claw piece, and the end of the thin claw piece away from the claw tip is far away from the third section of the thick claw piece One end of the bow tie is fixedly connected by two screws, the claw tip is facing away from the axis, and the claw tip plays the role of inflating the product to support the tension of the inner circumference of the clamped product. The combination of the thin claw piece and the thick claw piece is economical and practical. , Save resources, in repeated use, the claw tip is not easy to stick to the paint, which not only reduces the area of the claw mark after painting, but also maintains good electrical performance.

As an optimization, there are three screw holes on the upper end face of the terminal. The three screw holes are evenly distributed at 3×120°. The three screw holes are used to fix the entire clamping jaw to a beam to form a set of hangers, which is convenient for clamping at the same time. Take more product.

If the product exceeds its working range, it is only necessary to adjust or change the size of the overall clamping jaw; if it is used for external clamping products, it is only necessary to change the installation position of the spring and the thin jaw, that is, the spring is placed on the shaft. In the lower part of the core, the claw tip of the thin claw piece faces the axis; if it is used for clamping large and heavy products at room temperature, it is only necessary to change the power mechanism spring into a pneumatic cylinder, hydraulic cylinder or motor, etc.

Compared with the prior art, the beneficial effects of the present utility model are:

First, the utility model is a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products. The spring is pressed, and the deformation of the spring is used to push the shaft to drive the bow to move along the second section of the thick claw piece, so that the claw is realized. Effective control of sheet opening and closing actions, the gripper has a simple mechanical mechanism, low price, and can be used automatically in batches;

Second, the utility model is a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products. Linear bearings are used at the contact parts of the shaft center and the terminal to reduce the resistance of the shaft center in the process of repeated movement. Prevent the loss of spring force in the process of clamping the product, and ensure the stability of the clamping product without skewing and falling;

Third, the utility model is a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products. To the action of the lever, the spring force can be better transmitted to the thin claw piece, which helps to stably clamp the product. The thin claw piece is made of spring steel, and the elasticity of the spring steel can effectively buffer the impact of the claw piece on the product when clamping. It can also better self-correct the balance of tension between each claw and the product, and can prevent the deformation of the thick claw and improve the service life of the thick claw;

Fourth, the utility model is a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products. The gripper adopts materials with good electrical conductivity and high temperature resistance.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model of a convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products;

2 is a schematic structural diagram of a spring and a spring cap in a convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products of the present utility model;

3 is a top view of a terminal in a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products of the present invention;

4 is a schematic structural diagram of a middle-thick claw piece of a convenient automatic clamping claw used for electrophoretic coating of small and medium-sized drum-shaped products of the present invention;

5 is a schematic structural diagram of a thin claw piece in a convenient automatic clamping claw used for electrophoretic coating of small and medium-sized drum-shaped products of the present invention;

6 is a schematic structural diagram of the central axis of a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products of the present invention;

7 is a schematic structural diagram of a bow in a convenient automatic gripper used for electrophoretic coating of small and medium-sized drum-shaped products according to the present invention.

In the picture: 1-shaft, 101-spring, 102-spring cap, 103-screw, 104-bow tie, 105-hole, 106-through hole, 2-terminal, 201-cylindrical through-hole, 202-linear bearing, 203-open slot, 204-screw hole, 205-sunk head screw hole, 206- concave table, 3-claw piece, 301-thick claw piece, 302-thin claw piece, 303-first section, 304-second section , 305 - the third paragraph, 306 - claw tip, 307 - reinforcing rib, 308 - folding edge.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1 to 7, a convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products, the gripper includes a shaft 1, a terminal 2 and a claw piece processed from materials with good electrical conductivity 3. A cylindrical through hole 201 is opened in the terminal 2. A linear bearing 202 is fixedly installed in the cylindrical through hole 201. The axis 1 passes through the linear bearing 202. 2. The use of linear bearing 202 at the contact part can reduce the resistance of the axis 1 during repeated movement, prevent the loss of the elastic force of the spring 101 during the process of clamping the product, and ensure the stability of the clamping product without skewing and falling; the upper part of the axis 1 There is a spring 101, which is a string steel spring. According to the size and weight of the product clamped by the clamping jaw, the corresponding stroke and clamping force of the clamping jaw are determined, so as to select the appropriate parameters (such as wire diameter, length, etc.) Spring; the top of the spring 101 is provided with a spring cap 102, the spring cap 102 mainly plays the role of fixing the spring 101, and also plays the role of preventing the position of the spring 101 from shifting; the threaded hole at the top of the axis 1 is connected with a screw 103, and the screw 103 is used for installation Fix the spring cap 102; the bottom of the axis 1 and the bow 104 are fixedly connected by screws 103, the axis 1 drives the bow 104 to move along the linear bearing 202, the axis 1 transmits the elastic force of the spring 101 to the bow 104, and together with the spring 101 determines the clamping jaw A number of open grooves 203 and countersunk screw holes 205 are provided on the side wall of the terminal 2, a number of holes 105 are provided on the bow 104, and there are several claw pieces 3. The hole 105 is adapted to fit, the claw piece 3 includes a thick claw piece 301 and a thin claw piece 302, the thick claw piece 301 passes through the hole 105 of the bow 104, the contact surface of the bow 104 and the thick claw piece 301 is smooth, and the mechanical strength is high; One end of the 301 is located in the opening slot 203 of the terminal 2, and is hinged with the terminal 2 by the screw 103 passing through the countersunk screw hole 205, and the other end of the thick claw piece 301 is fixedly connected with the thin claw piece 302 through several screws 103; Drive the axis 1 to link the bow 104 to slide along the second section 304 of the thick claw piece 301 to control the opening and closing range of the claw piece 3. The elasticity of the thin claw piece 302 is combined with the rigidity of the thick claw piece 301, which not only maintains the entire clamp The rigidity of the claws utilizes the elasticity of the thin claws 302. The combination of the thin claws 302 and the thick claws 301 helps to stably grip the product and play a buffering role. When the clamping jaws need to be repaired, they only need to be replaced. Thin claw piece 302 .

The terminal 2 is cylindrical, the cylindrical through hole 201 is opened in the center of the terminal 2, the linear bearing 202 is fixedly installed in the cylindrical through hole 201, and the side wall of the terminal 2 is provided with three open slots 203, the three open slots 203 are 3× The 120° is evenly distributed to ensure the balance of the clamping force between the claws 3; the middle position of the side wall of the terminal 2 perpendicular to the opening slot 203 is provided with a countersunk head screw hole 205, and one end of the thick claw 301 is located in the opening slot 203 of the terminal 2 inside, and use the screw 103 passing through the countersunk head screw hole 205 to be hinged with the terminal 2. The countersunk head screw hole 205 is used to install the screw 103 connecting the terminal 2 and the thick claw piece 301; the countersunk head screw hole 205 is provided with a concave head In the table 206 , the screw head of the screw 103 is placed in the concave table 206 , and the concave table 206 is used for placing the screw head of the screw 103 .

The bow 104 is in the shape of a sheet, a through hole 106 is formed in the center of the bow 104, and three holes 105 are formed on the upper surface of the bow 104. 105 has the function of positioning the three claws 3, so as to ensure the balance of the clamping force among the claws 3.

The shaft center 1 is cylindrical, the diameter of the upper cylinder of the shaft center 1 is smaller than the diameter of the lower cylinder, the upper part of the shaft center 1 penetrates the linear bearing 202 , and the bottom of the shaft center 1 is fixedly connected to the central through hole 106 of the bow tie 104 by screws 103 .

There are three claw pieces 3 , and the claw pieces 3 include a thick claw piece 301 and a thin claw piece 302 .

The thick claw piece 301 is composed of a first section 303, a second section 304 and a third section 305. The thick claw piece 301 has a smooth surface, good electrical conductivity and high mechanical strength. During the sliding process, the stroke range of the claw piece 3 is stretched and contracted; one end of the second segment 304 is fixedly connected to the end of the first segment 303 away from the terminal 2, the other end is fixedly connected to the end of the third segment 305 close to the bow 104, and the second The acute angle formed by the segment 304 and the vertical line is 30-60°, which is convenient for the bow 104 to slide along the second segment 304 of the thick claw piece 301 to control the opening and closing range of the claw piece 3; the thick claw piece 301 is provided with a reinforcing rib 307 , the reinforcing rib 307 increases the strength of the thick claw piece 301, prevents the thick claw piece 301 from being deformed, and reduces the size and weight of the thick claw piece 301 and the bow 104; the end of the first section 303 close to the terminal 2 is in the open slot 203 inside, and use the screw 103 through the countersunk head screw hole 205 to be hinged with the terminal 2.

The thin claw piece 302 is in the shape of an isosceles triangle, the surface of the thin claw piece 302 is smooth, the electrical conductivity is good, and it has certain elasticity and rigidity; The two sides of the 301 prevent the thin claw piece 302 from moving; the isosceles triangle-shaped apex is bent into a claw tip 306, the folded edge 308 and the claw tip 306 are located on opposite sides of the thin claw piece 302, and the thin claw piece 302 is away from the end of the claw tip 306 It is fixedly connected with the end of the third section 305 of the thick claw piece 301 away from the bow tie 104 by two screws 103. The claw tip 306 faces away from the axis 1, and the claw tip 306 plays the role of inflating and supporting the product against the tension on the inner circumference of the clamped product. The combination of the thin claw piece 302 and the thick claw piece 301 is economical and practical, and saves resources. During repeated use, the claw tip 306 is not easy to stick to the paint, which not only reduces the area of the claw marks after painting, but also maintains the Good power-on performance.

The upper end face of the terminal 2 is provided with three screw holes 204. The three screw holes 204 are evenly distributed at 3×120°. The three screw holes 204 are used to fix the entire clamping jaw to a beam to form a set of hangers, which is convenient for simultaneous Grab more product.

When clamping the barrel-shaped product, the shaft 1 is pushed down by external force, the shaft 1 moves downward in the linear bearing 202, the spring 101 is compressed, and the shaft 1 drives the bow 104 to move down along the second section 304 of the thick claw piece 301. , the claw piece 3 is contracted and closed, the clamping claw is lowered as a whole and inserted into the barrel-shaped product, and then the external force is removed, the spring 101 is released, the claw piece 3 is opened, and the claw piece 3 expands to clamp the product; when removing the barrel-shaped product, use an external force. Push down the shaft center 1, the shaft center 1 moves down in the linear bearing 202, the spring 101 compresses, the shaft center 1 drives the bow 104 to move down along the thick claw piece 301 in the second section 304, the claw piece 3 shrinks and closes, the The clamping jaws rise as a whole to leave the barrel-shaped product, and then the external force is removed, the spring 101 is released, the jaws 3 are opened, and the initial state is restored.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (8)

1. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products, characterized in that: the gripper comprises a shaft (1), a terminal (2) and a claw processed from a material with electrical conductivity Sheet (3), a cylindrical through hole (201) is opened in the terminal (2), a linear bearing (202) is fixedly installed in the cylindrical through hole (201), and the shaft center (1) runs through a straight line A bearing (202), a spring (101) is sleeved on the upper part of the shaft (1), a spring cap (102) is arranged on the top of the spring (101), and a screw (103) is connected to the threaded hole on the top of the shaft (1) , the bottom of the shaft center (1) and the bow tie (104) are fixedly connected by screws (103), and the side walls of the terminal (2) are provided with a number of open slots (203) and countersunk screw holes (205). The bow (104) is provided with a plurality of holes (105), the claws (3) are several, the claws (3) and the opening grooves (203) of the terminals (2) and the holes (105) of the bow (104) ), the claw piece (3) includes a thick claw piece (301) and a thin claw piece (302), the thick claw piece (301) passes through the hole (105) of the bow (104), the thick claw piece (301) One end of the claw piece (301) is located in the opening groove (203) of the terminal (2), and is hinged with the terminal (2) by a screw (103) passing through the countersunk head screw hole (205). The thick claw piece (301) The other end is fixedly connected with the thin claw piece (302) through several screws (103). 2. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 1, characterized in that: the terminal (2) is cylindrical, and the cylindrical through hole ( 201) is opened in the center of the terminal (2), and three open grooves (203) are opened on the side wall of the terminal (2), and the three open grooves (203) are evenly distributed at 3×120°, and the terminal (2) ) A countersunk head screw hole (205) is provided on the side wall at the middle position perpendicular to the opening slot (203), and a concave platform (206) is provided at the countersunk head of the countersunk head screw hole (205), and the screw (103 ) screw heads are placed in the recesses (206). 3. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 2, characterized in that: the bow tie (104) is flake-shaped, and the bow tie (104) is A through hole (106) is formed in the center, and three holes (105) are formed on the upper surface of the bow tie (104). °Even distribution. 4. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 3, characterized in that: the axis (1) is cylindrical, and the axis (1) ) The diameter of the upper cylinder is smaller than the diameter of the lower cylinder, the upper part of the shaft (1) passes through the linear bearing (202), and the bottom of the shaft (1) and the central through hole (106) of the bow (104) pass through the screw (103) Fixed connection. 5 . The convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 4 , wherein the number of said claws ( 3 ) is three. 6 . 6. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 5, characterized in that: the thick claw piece (301) is composed of a first section (303), a second section A second section (304) and a third section (305) are formed. One end of the second section (304) is fixedly connected to the end of the first section (303) away from the terminal (2), and the other end is close to the third section (305). One end of the bow tie (104) is fixedly connected, the acute angle formed by the second section (304) and the vertical line is 30-60°, the thick claw piece (301) is provided with a reinforcing rib (307), the One end of the first section (303) close to the terminal (2) is located in the opening groove (203). 7. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to claim 6, characterized in that: the thin claw piece (302) is an isosceles triangle shape, and the etc. The waist of the lumbar triangle is bent to form a folded edge (308), the vertex of the isosceles triangle is bent to form a claw tip (306), and the folded edge (308) and the claw tip (306) are located at the thin claw piece (302). On the opposite sides, the end of the thin claw piece (302) away from the claw tip (306) and the end of the third section (305) of the thick claw piece (301) away from the bow tie (104) are fixedly connected by two screws (103) , the claw tip (306) faces away from the axis (1). 8. A convenient automatic gripper for electrophoretic coating of small and medium-sized drum-shaped products according to any one of claims 1 to 7, characterized in that: the upper end face of the terminal (2) is provided with three Screw holes (204), the three screw holes (204) are evenly distributed at 3×120°, and the three screw holes (204) are used to fix the entire clamping jaw to a beam to form a set of hangers .

Images