Adjustable clamping jaw device suitable for materials with various outer diameters

Abstract

The utility model provides an adjustable clamping jaw device suitable for materials with various outer diameters, which comprises two clamping jaws and a movement mechanism used for driving the two clamping jaws to linearly move up and down, and the bottom of the movement mechanism is connected with a control mechanism used for controlling the two clamping jaws to open and close. The top of the control mechanism is connected with a power cylinder used for adjusting the overall height of the clamping jaw device, and the interior of the power cylinder is connected with a conveying mechanism for conveying materials. The control mechanism comprises two semi-rings, one ends of the two semi-rings are connected through a pressing plate, the other ends of the two semi-rings are provided with openings, the other ends of the two semi-rings are respectively provided with at least one groove, fastening screws are connected in the grooves in series, and the two adjacent fastening screws in the two semi-rings are connected with a clamping spring. The adjustable clamping jaw device suitable for the materials with various outer diameters solves the problems that an air cylinder is unstable in material clamping, low in working efficiency, short in long-term operation service life and not suitable for being used in the field of large-batch rapid machining, and has the technical effects of being stable in clamping, improving the working efficiency and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, in particular to an adjustable clamping claw device suitable for materials with various outer diameters. Background Art

[0002] In the prior art, pneumatic grippers are generally used as feeding devices in the rapid processing industry. The power source of pneumatic grippers is compressed air. Due to the instability of the gas in the cylinder, moisture usually accumulates. The operation of pneumatic grippers also has temperature requirements. When the temperature is low, the response speed of the cylinder will be affected, affecting the operation and life of the pneumatic grippers. The operation of pneumatic grippers also has requirements for air pressure. When the air pressure is low, the air grippers run slowly or cannot run. When the air pressure is high, the clamping force is also high, which will produce certain clamping marks on the workpiece. It is not suitable for workpieces that have requirements for appearance or are soft.

[0003] Another way of feeding is to use a vibrating plate to feed the material and then let it fall directly into the processing area by weight. For materials with irregular outer diameters, the material will tilt during the falling process and cannot accurately enter the processing position (such as the chuck), thereby reducing work efficiency.

[0004] Therefore, the present invention provides an adjustable clamping jaw device suitable for materials with various outer diameters to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable clamping jaw device suitable for materials of various outer diameters, which solves the problems of unstable material clamping, short life, low working efficiency and high environmental requirements of cylinders, and has the technical effects of stable clamping, wide application range, long life and improved work efficiency.

[0006] An adjustable clamping jaw device suitable for materials of various outer diameters comprises two clamping jaws and a motion mechanism for driving the clamping jaws to perform vertical linear motion. The bottom of the motion mechanism is connected to a control mechanism for controlling the opening and closing motion of the clamping jaws. The control mechanism is connected to a power cylinder for adjusting the overall height of the clamping jaw device. The interior of the power cylinder is connected to a conveying mechanism for conveying materials.

[0007] The control mechanism comprises two half rings, one end of the two half rings is connected by a pressure plate and the other end is open, the other end of the two half rings is respectively provided with at least one groove, the groove is connected in series with a set screw, and two adjacent set screws in the two half rings are connected to a clamping spring;

[0008] The inner sides of the two half rings are respectively provided with a protrusion 1 and a protrusion 2, and the protrusion 1 and the protrusion 2 are respectively connected to two bearings penetrating one end of the two clamping jaws in a separate manner.

[0009] The other end of the clamp is provided with a right-angle groove, the right-angle groove is connected to the material, the sides of the two clamps are respectively penetrated with a retaining spring groove shaft, the outer sides of the two clamps are respectively provided with a clamp control screw, and the inner sides of the two clamps are respectively provided with a reset spring 1 and a reset spring 2;

[0010] The retaining spring groove shaft, the clamping jaw control screw, the first reset spring, and the second reset spring are respectively connected to the movement mechanism.

[0011] Two adjacent grooves are provided with rollers respectively, and the two rollers are rollingly connected to one end of the control lever, and the other end of the control lever is provided with a tungsten steel sheet for anti-friction;

[0012] Inclined surfaces are respectively arranged on both sides of one end of the control lever, and the two inclined surfaces are respectively tangent to the two rollers.

[0013] The motion mechanism includes a square block, square grooves are respectively arranged on both sides of the square block, the interiors of the two square grooves are respectively hinged to one end of the two clamping claws, the square block is fixedly connected to two sliding rods respectively penetrated through the outside of the square block, and the other ends of the two sliding rods are connected to the bracket.

[0014] The conveying mechanism comprises a feeding tube, one end of which is coaxially sleeved on one end of a copper tube, and the other end of which is coaxially sleeved on one end of a main shaft, and a positioning nut is provided on both sides of the other end of the main shaft;

[0015] The other end of the feeding pipe is inserted into the through hole 1 at one end of the fixing block, the through hole 2 at the other end of the fixing block is connected to the power cylinder through a guide shaft, and the bracket is coaxially sleeved on the outer side of the guide shaft;

[0016] The bracket is located between the fixing block and the power cylinder.

[0017] The other end of the copper tube is respectively provided with a circular groove 1 and a circular groove 2, an open groove 1 is provided inside the circular groove 1, a clamping column is provided inside the open groove 1, a clamping groove is provided at one end of the clamping column, and a protrusion 3 is provided at the other end of the clamping column, a rubber ring 1 is sleeved on the coaxial outer side of the circular groove 1, two open grooves 2 and 3 are provided inside the circular groove 2, which are opposite to each other, and a clamping ball is provided inside the open groove 2 and the open groove 3, respectively, and a rubber ring 2 is sleeved on the coaxial outer side of the circular groove 2;

[0018] The positioning nut is coaxially sleeved on the inner side of one end of the positioning needle, and the other end of the positioning needle is coaxially sleeved on a positioning spring.

[0019] The power cylinder is coaxially sleeved on the outer side of the copper tube, and one end of the power cylinder is provided with a plurality of adjusting bolts.

[0020] An optical axis hole is provided on the outer side of the power cylinder, and the optical axis passes through the optical axis hole and the side of the control lever.

[0021] The utility model achieves the following significant effects:

[0022] (1) The positioning pin inside the positioning nut has a spring at one end. When the material waiting to be loaded can be stuck in this area, a right-angle groove is provided at the other end of the clamp. The bracket is connected to the slide rod, the slide rod is connected to the square block, and the square block is connected to the clamp. When the bracket moves downward, it is converted into the clamp moving downward, allowing the right-angle groove to push the material waiting to be loaded into the chuck on the workstation.

[0023] (2) There is an adjusting bolt on the power cylinder. When the clamping jaw is not long enough, the adjusting bolt can be turned to move the clamping jaw device downward as a whole, and then the bracket is pressed to drive the clamping jaw to send the material into the chuck on the work station machine.

[0024] (3) One end of the control lever is set to be an inclined surface, and the side of the control lever is connected to the power cylinder by an optical axis. When the other end of the control lever is pressed, the inclined surface end of the control lever moves outward, and the inclined surface end is connected to the roller, so that the movement of the control lever can be smooth and stable.

[0025] (4) The clamping jaw control screw on the outside of the control lever is separately connected to the square block. The clamping jaw control screw can be turned to adjust the opening angle of the clamping jaw. When the clamping jaw control screw is tightened, the clamping jaw can remain stationary. This design is suitable for clamping materials of various outer diameters.

[0026] (5) By changing the stiffness of the reset spring of the single-side clamp, when the elastic force of the clamp reset spring is greater than the tension of the spring on the half ring, the single-side clamp can remain stationary. This design can fix the single-side clamp for positioning materials and expand the scope of application.

[0027] (6) The clamping column inside the copper tube is held tightly by a rubber ring, which can hold the falling material at this position. When the main shaft is inserted, the protrusion at the third position can be pushed outward, and the material can fall along the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0029] Figure 2 It is a top view of the clamping device in the embodiment of the utility model.

[0030] Figure 3 It is a partial cross-sectional view of an embodiment of the utility model.

[0031] Figure 4 It is a structural schematic diagram of the conveying mechanism in the embodiment of the utility model.

[0032] Figure 5 It is a schematic diagram of the structure of the copper tube in the embodiment of the utility model.

[0033] Figure 6 It is a schematic diagram of the positions of the clamping column and the clamping ball in the embodiment of the utility model.

[0034] Figure 7 It is a schematic diagram of the structure of the clamping column in the embodiment of the utility model.

[0035] Figure 8 It is a cross-sectional view of the copper tube in the embodiment of the utility model.

[0036] Fig. 9 It is a schematic diagram of the structure of the clamping jaws in the embodiment of the utility model.

[0037] Fig.10 It is a schematic diagram of the structure of the control lever in the embodiment of the utility model.

[0038] Fig.11 It is a cross-sectional view of a positioning nut in an embodiment of the utility model.

[0039] Fig.12 It is a schematic diagram of the structure of the square block in the embodiment of the utility model.

[0040] Among them, the accompanying drawings are marked as follows: 10, feeding tube; 11, fixing block; 12, bracket; 13, tungsten steel sheet; 14, power cylinder; 15, clamping spring; 16, half ring; 17, clamping claw; 18, positioning nut; 19, control lever; 20, pressure plate; 21, set screw; 22, square block; 23, guide shaft; 24, slide bar; 25, adjusting bolt; 26, optical axis; 101, copper tube; 102, main shaft; 132, roller; 171, bearing; 172, reset spring 1; 173, clamping claw control screw; 174, right-angle groove; 175, retaining spring groove shaft; 181, positioning pin; 182, positioning spring; 221, square groove; 1010, clamping column; 1011, rubber ring 2; 1012, clamping ball; 1013, rubber ring 1; 1721, reset spring 2; DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0042] See also Figure 1-Figure 11 An adjustable clamping device suitable for materials of various outer diameters includes two clamping jaws 17, a motion mechanism for driving the clamping jaws 17 to perform up and down linear motion, the bottom of the motion mechanism is connected to a control mechanism for controlling the opening and closing motion of the clamping jaws 17, the control mechanism is connected to a power cylinder 14 for adjusting the overall height of the clamping jaw device, and the interior of the power cylinder 14 is connected to a conveying mechanism for conveying materials.

[0043] The control mechanism includes two half rings 16, one end of the two half rings 16 is connected by a pressure plate 20 and the other end is open, the other end of the two half rings 16 is respectively provided with at least one groove, and a set screw 21 is connected in series in the groove. The two adjacent set screws 21 in the two half rings 16 are connected to the clamping spring 15. When the clamping jaws 17 are clamped, the clamping spring 15 is in an open state. If the clamping jaws are to be opened, the tension of the clamping spring 15 can be used to pull the half rings 14 on both sides closer.

[0044] The inner sides of the two half rings 16 are respectively provided with protrusions 1 and 2, which are separately connected to two bearings 171 passed through one end of the two clamping jaws 17. The protrusions 1 and 2 on the inner side of the half ring 14 squeeze the bearings 171 on the clamping jaws 17 respectively, and the clamping jaw control screw 173 on the clamping jaw 17 can act as a fulcrum. The half ring 14 is closed, overcoming the elastic force of the reset spring 1 172 and the reset spring 2 1721 to open the clamping jaw 17.

[0045] The other end of the clamping jaw 17 is provided with a right angle groove 174, which is connected to the material. The sides of the two clamping jaws 17 are respectively penetrated with a retaining spring groove shaft 175, and the outer sides of the two clamping jaws 17 are respectively provided with a clamping jaw control screw 173, and the inner sides of the two clamping jaws are respectively provided with a return spring 1 172 and a return spring 2 1721;

[0046] The retaining ring groove shaft 175, the jaw control screw 173, the reset spring 172, and the reset spring 2 1721 are respectively connected to the motion mechanism, and the adjustable jaw control screw 173 is used to control the opening angle of the jaw 17. When the jaw control screw 173 is screwed deeper (or shallower), it will contact the square groove 221 of the square block 22 in advance (or later), thereby controlling the opening angle of the jaw 17, realizing the needs of clamping materials with different outer diameters, and also minimizing the damage to the surface of the material.

[0047] When necessary, the reset spring 172 can be replaced with a spring with greater elasticity, so that the elastic force of the reset spring 172 is greater than the tension of the clamping spring 15 installed on the half ring 16, and by adjusting the clamping jaw control screw 173, the clamping jaw 17 on the side of the reset spring 172 can be fixed. At this time, the clamping jaw 17 can not only realize the clamping function, but also realize the correct alignment of the material.

[0048] Rollers 132 are respectively provided in two adjacent grooves of the half ring 16. The two rollers 132 are rollingly connected to one end of the control lever 19. The other end of the control lever 19 is welded with a friction-resistant tungsten steel sheet 13. When the control lever 19 moves in contact with one end of the roller 132, the roller 132 plays a role in making the control lever 19 move smoothly.

[0049] Inclined surfaces are respectively arranged on both sides of one end of the control lever 19. The two inclined surfaces are tangent to the two rollers 132 respectively. The inclined surfaces are positioned so as to fully contact the balls 132 to reduce friction.

[0050] The moving mechanism includes a square block 22, and square grooves 221 are respectively arranged on both sides of the square block 22. The interiors of the two square grooves 221 are respectively hinged to one end of the two clamping jaws 17. The square block 22 is fixedly connected to two sliding rods 24 respectively penetrated through the outside of the square block 22. The other ends of the two sliding rods 24 are connected to the bracket 12, the bracket 12 is connected to the sliding rod 24, the sliding rod 24 is connected to the square block 22, and the square block 22 is connected to the clamping jaw 17. When the bracket 12 moves downward, it is converted into the downward movement of the clamping jaw 17, so that the right-angle groove 174 on the clamping jaw 17 pushes the material waiting for loading into the chuck on the workstation.

[0051] The conveying mechanism includes a feeding tube 10, one end of which is coaxially sleeved on one end of a copper tube 101, and the other end of the copper tube 101 is coaxially sleeved on one end of a main shaft 102. A positioning nut 18 is provided on both sides of the other end of the main shaft 102, and a positioning pin 181 is provided inside the positioning nut 18. A spring is provided at one end of the positioning pin 181. Materials waiting to be loaded can be stuck in this area. When the bracket 12 moves downward, the clamping jaw 17 is driven to move downward, so that the right-angle groove 174 on the clamping jaw 17 pushes the materials waiting to be loaded into the chuck on the workstation.

[0052] The other end of the feed pipe 10 is inserted into the through hole 1 at one end of the fixed block 11. The through hole 2 at the other end of the fixed block 11 is connected to the power cylinder 14 through the guide shaft 23. The bracket 12 is coaxially sleeved on the outer side of the guide shaft 23.

[0053] The bracket 12 is located between the fixing block 11 and the power cylinder 14 .

[0054] A circular groove 1 and a circular groove 2 are respectively provided at the other end of the copper tube 101. An open groove 1 is provided inside the circular groove 1. A clamping column 1010 is provided inside the open groove 1. A clamping groove is provided at one end of the clamping column 1010. A protrusion 3 is provided at the other end of the clamping column 1010. A rubber ring 1013 is sleeved on the coaxial outer side of the circular groove 1. Two open grooves 2 and 3 are provided inside the circular groove 2 at opposite positions. A locking ball 1012 is provided inside the open groove 2 and the open groove 3 respectively. A rubber ring 2 1011 is sleeved on the coaxial outer side of the circular groove 2. The clamping column 1010 inside the copper tube 101 is clamped by the rubber ring 1013, and the falling material can be clamped at this position. When the main shaft 102 is inserted, the protrusion 3 on the clamping column 1010 can be pushed outward, and the material can fall along the main shaft 102 to the position of the positioning nut 18, and the locking ball 1012 clamped by the rubber ring 2 1011 plays the role of a buckle.

[0055] The positioning nut 18 is coaxially sleeved on one end of the positioning pin 181, and the other end of the positioning pin 181 is coaxially sleeved with a positioning spring 182. When the right-angle groove 174 on the clamping jaw 17 pushes the material waiting for loading downward, the positioning spring 182 contracts inward, and the positioning pin 181 contracts inward at the same time, causing the material to fall.

[0056] The power cylinder 14 is coaxially sleeved on the outside of the copper tube 101. One end of the power cylinder 14 is provided with multiple adjusting bolts 25. The outer diameter of the adjusting bolts 25 always keeps in contact with the surface of a workstation. When the length of the clamp 17 is not enough, the adjusting bolts 25 can be screwed. Under the condition of ensuring that the outer diameter of the adjusting bolts 25 is in contact with the workstation, the clamp device moves downward as a whole relative to the adjusting bolts 25, and then presses the bracket 12 to send the material into the chuck on the workstation.

[0057] An optical axis hole is provided on the outer side of the power cylinder 14, and the optical axis 26 passes through the optical axis hole and the side of the control lever 19. The optical axis 26 acts as a fulcrum. When one end of the control lever 19 is pressed down, the other end rises.

[0058] The specific working process of this utility model:

[0059] See also Figure 1-Figure 11 First, a plurality of adjusting bolts 25 are provided at one end of the power cylinder 14. The outer diameter of the adjusting bolt 25 always keeps in contact with the surface of the workstation. When the length of the clamp 17 is not enough, the adjusting bolt 25 can be screwed. Under the condition that the outer diameter of the adjusting bolt 25 is in contact with the workstation, the clamp device moves downward as a whole relative to the adjusting bolt 25, and the clamp device is adjusted to a suitable position for subsequent work.

[0060] The material is placed in the material pipe 10, and one end of the feeding pipe 10 is coaxially sleeved on one end of the copper tube 101. The material falls to the position of the copper tube 101. A clamping column 1010 is provided inside the copper tube 101. When the clamping column 1010 is clamped by a rubber ring 1013, the three raised positions on the clamping column 1010 pass through the inner wall of the copper tube 101 to clamp the falling material, and the other end of the copper tube 101 is coaxially sleeved on one end of the main shaft 102. If the material continues to fall, the main shaft 102 needs to be inserted into the copper tube, and the three raised positions on the clamping column 1010 inside the copper tube 101 are pushed open by one end of the main shaft 102, and the material enters the main shaft 102.

[0061] One end of the control lever 19 is rollingly connected with the roller 132, and the other end of the control lever 19 is provided with a tungsten steel sheet 13, which plays a role of wear resistance. An optical axis hole is provided on the outer side of the power cylinder 14, and the optical axis 26 passes through the optical axis hole and the side of the control lever 19. The optical axis 26 plays the role of a fulcrum. When one end of the control lever 19 is pressed down, the other end is tilted, and the roller 132 is connected to the half ring 14. One end of the two half rings 14 is connected by a pressure plate 20, and the other ends of the two half rings 14 are respectively provided with a plurality of grooves. The grooves of each half ring 14 are connected in series with a set screw 21, and the set screws 21 in two adjacent and opposite grooves are connected to the clamping spring 15. When the other end of the control lever 19 is tilted, the two half rings 14 are driven to open outward. The clamping spring 15 is stretched, and the protrusions 1 and 2 on the half ring 14 are pressed onto the bearing on the clamping jaw 17. Since the outer side of the clamping jaw 17 is provided with a clamping jaw control screw 173, the clamping jaw control screw 173 can act as a fulcrum, and the inner side of the clamping jaw 17 is respectively provided with a reset spring 172 and a reset spring 2 1721. After pressing the control lever 19, the roller 132 drives the half ring 16 to open, and the pressure on the bearing 171 is released. The elastic force of the reset spring 172 and the reset spring 2 1721 is used to push one end of the clamping jaw 17 open, and the other end of the clamping jaw 17 is closed. After releasing the control lever 19, the tension of the clamping spring 15 is used to close the half ring 14. When the half ring 14 is closed, the other end of the clamping jaw 17 is opened to realize the opening and closing action.

[0062] The jaw control screw 173 can be adjusted to control the opening angle of the jaw 17. When the jaw control screw 173 on one side is screwed deeper (or shallower), it will contact the square groove 221 of the square block 22 in advance (or later), thereby controlling the opening angle of the jaw 17 to meet the needs of clamping materials with different outer diameters and minimize damage to the surface of the material.

[0063] When necessary, the reset spring 172 can be replaced with a spring with greater elasticity, so that the elastic force of the reset spring 172 is greater than the tension of the clamping spring 15 installed on the half ring 16, and by adjusting the clamping jaw control screw 173, the clamping jaw 17 on the side of the reset spring 172 can be fixed. At this time, the clamping jaw 17 can not only realize the clamping function, but also realize the correct alignment of the material.

[0064] The positioning nuts 18 are connected to both sides of the bottom end of the main shaft, and the coaxial inner side of the positioning nuts 18 is sleeved on one end of the positioning pin 181. The other end of the positioning pin 181 is sleeved with a positioning spring 182 coaxially. In the positive state, one end of the positioning pin 181 will be pushed into the inside of the main shaft by the elastic force of the positioning spring 182, and the falling material will be stuck at this position. The two sides of the square block 22 are respectively provided with a square groove 221. The interiors of the two square grooves 221 are respectively hinged with one end of the two clamping jaws 17 and two slide bars 24 connected to the square block 22. The other ends of the two slide bars 24 are connected to the bracket 12. When the bracket 12 is pressed down, it is converted into the downward movement of the clamping jaw 17. The other end of the clamping jaw 17 is provided with a right-angle groove 174. The position of the right-angle groove 174 contacts the material. When the clamping jaw moves down to press the material, at this time, the positioning pin 181 presses the positioning spring 182 to shrink inward, and the material is sent out of the main shaft 102 and into the chuck on the workstation for subsequent work.

[0065] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An adjustable clamping jaw device suitable for materials of various outer diameters, characterized in that: The invention comprises two clamping jaws (17) and a motion mechanism for driving the clamping jaws (17) to perform vertical linear motion. The bottom of the motion mechanism is connected to a control mechanism for controlling the opening and closing motion of the clamping jaws (17). The control mechanism is connected to a power cylinder (14) for adjusting the overall height of the clamping jaw device. The interior of the power cylinder (14) is connected to a conveying mechanism for conveying materials.

2. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 1, characterized in that: The control mechanism comprises two half rings (16), one end of the two half rings (16) is connected by a pressure plate (20) and the other end is open, the other end of the two half rings (16) is respectively provided with at least one groove, a set screw (21) is connected in series in the groove, and two adjacent set screws (21) in the two half rings (16) are connected to a clamping spring (15); The inner sides of the two half rings (16) are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively separately connected to two bearings (171) penetrating one end of the two clamping jaws (17).

3. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 2, characterized in that: The other end of the clamping jaw (17) is provided with a right-angle groove (174), and the right-angle groove (174) is connected to the material. The sides of the two clamping jaws (17) are respectively penetrated with a retaining spring groove shaft (175). The outer sides of the two clamping jaws (17) are respectively provided with a clamping jaw control screw (173), and the inner sides of the two clamping jaws are respectively provided with a reset spring 1 (172) and a reset spring 2 (1721); The retaining spring groove shaft (175), the clamping jaw control screw (173), the first return spring (172), and the second return spring (1721) are respectively connected to the movement mechanism.

4. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 2, characterized in that: Two adjacent grooves are provided with rollers (132) respectively, and the two rollers (132) are rollingly connected to one end of the control lever (19), and the other end of the control lever (19) is welded with a tungsten steel sheet (13); Inclined surfaces are respectively provided on both sides of one end of the control lever (19), and the two inclined surfaces are respectively tangent to the two rollers (132).

5. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 1, characterized in that: The movement mechanism comprises a square block (22), square grooves (221) are respectively arranged on both sides of the square block (22), the interiors of the two square grooves (221) are respectively hinged to one end of the two clamping claws (17), the square block (22) is fixedly connected to two sliding rods (24) respectively penetrated through the outside of the square block (22), and the other ends of the two sliding rods (24) are connected to the bracket (12).

6. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 5, characterized in that: The conveying mechanism comprises a feeding tube (10), one end of the feeding tube (10) is coaxially sleeved on one end of a copper tube (101), the other end of the copper tube (101) is coaxially sleeved on one end of a main shaft (102), and two side surfaces of the other end of the main shaft (102) are respectively provided with a positioning nut (18); The other end of the feeding pipe (10) is inserted into a through hole 1 at one end of the fixing block (11), and a through hole 2 at the other end of the fixing block (11) is connected to the power cylinder (14) via a guide shaft (23), and the bracket (12) is coaxially sleeved on the outer side of the guide shaft (23); The bracket (12) is located between the fixing block (11) and the power cylinder (14).

7. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 6, characterized in that: The other end of the copper tube (101) is respectively provided with a circular groove 1 and a circular groove 2, an open groove 1 is provided inside the circular groove 1, a clamping column (1010) is provided inside the open groove 1, a clamping groove is provided at one end of the clamping column (1010), a protrusion 3 is provided at the other end of the clamping column (1010), a rubber ring 1 (1013) is sleeved on the coaxial outer side of the circular groove 1, two open grooves 2 and 3 are provided inside the circular groove 2, which are opposite to each other, a clamping ball (1012) is provided inside the open groove 2 and the open groove 3, respectively, and a rubber ring 2 (1011) is sleeved on the coaxial outer side of the circular groove 2; The positioning nut (18) is coaxially sleeved on the inner side of one end of the positioning needle (181), and the other end of the positioning needle (181) is coaxially sleeved on the positioning spring (182).

8. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 7, characterized in that: The power cylinder (14) is coaxially sleeved on the outside of the copper tube (101), and one end of the power cylinder (14) is provided with a plurality of adjustment bolts (25).

9. The adjustable clamping jaw device suitable for materials with various outer diameters according to claim 4, characterized in that: An optical axis hole is provided on the outer side of the power cylinder (14), and the optical axis (26) passes through the optical axis hole and the side of the control lever (19).

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