CN213258312U

CN213258312U - Universal clamp for cutting pipe

Info

Publication number: CN213258312U
Application number: CN202022323502.1U
Authority: CN
Inventors: 高亚东
Original assignee: Kraus Mafi Machinery China Co Ltd
Current assignee: Kraus Mafi Machinery China Co Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-05-25
Anticipated expiration: 2030-10-19

Abstract

The utility model belongs to the technical field of the cutting machine, a tubular product cutting is with omnipotent anchor clamps is provided, including frame, two cylinders, two sets of rotating assembly, six clamping bars and solenoid valve. The middle of the frame is provided with a through hole, two groups of rotating assemblies are symmetrically distributed on two sides of the frame along the plane where the frame is located, each group of rotating assemblies comprises six rotating arms and six transmission arms, the clamping rods penetrate through the through hole and are parallel to the axis of the through hole and are fixedly connected with the two rotating arms on the two sides of the frame respectively, and the two cylinders are controlled by the electromagnetic valves to drive the six clamping rods to move towards the axis of the through hole synchronously. Six clamping rods form circles with different diameters for cutting, pipes with various diameters in the through holes are clamped quickly, one set of equipment is suitable for pipes with various diameters, workload is reduced, and working efficiency is improved. Meanwhile, the pipe is prevented from rotating, the pipe is prevented from being scratched when rotating, and the quality of the pipe is improved.

Description

Universal clamp for cutting pipe

Technical Field

The utility model belongs to the technical field of the cutting machine, concretely relates to universal clamp is used in tubular product cutting.

Background

When the pipe is cut, the pipe needs to be clamped by the clamping device of the pipe cutting machine and then fixed, and then cutting is carried out. The pipe cutting machine clamping device used in the current market clamps the pipe through an upper half block and a lower half block. The inner diameter of the half block is the same as the outer diameter of the pipe, the lower half block is fixed, and the upper half block moves up and down through the cylinder to loosen and clamp the pipe.

Therefore, a plurality of half blocks need to be prepared by one pipe cutting machine clamping device, when pipes with different diameters and specifications are cut, the half blocks with corresponding specifications need to be replaced, the workload of workers is increased, a large amount of manpower and time are wasted, and meanwhile, a large amount of fields are needed for storing the half blocks, so that the cost of equipment manufacturers and equipment users is increased, and the competitiveness is reduced. The half block is usually formed by processing an aluminum alloy casting, has high hardness and poor clamping effect, and the pipe is easy to rotate when being fixed, so that the surface of the pipe is scratched, and the product quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve above-mentioned problem and go on, aim at provides a universal fixturing is used in tubular product cutting, when cutting, presss from both sides tightly fixedly to going on of different diameter tubular products in a flexible way fast.

The utility model provides an universal clamp is used in tubular product cutting for clip tubular product when cutting tubular product, have such characteristic, include: the pipe clamping device comprises a frame, two cylinders, two groups of rotating assemblies, six clamping rods and an electromagnetic valve, wherein a through hole for a pipe to pass through is formed in the middle of the frame, the two groups of rotating assemblies are symmetrically distributed on two sides of the frame along a plane where the frame is located, each group of rotating assemblies comprise six rotating arms and six transmission arms, the six rotating arms and the six transmission arms in one group of rotating assemblies are respectively symmetrical to the six rotating arms and the six transmission arms in the other group of rotating assemblies in a one-to-one correspondence mode, the six rotating arms are installed on one side of the frame and are uniformly distributed around the through hole in an annular mode, each rotating arm comprises a first connecting portion and a second connecting portion, the first connecting portions are fixedly connected with the second connecting portions, the first connecting portions are rotatably installed on the frame, the second connecting portions are fixedly connected with the clamping rods, and two adjacent first connecting portions are respectively rotatably, one of the first connecting portions is connected with the air cylinder and used for rotating under the pushing of the air cylinder so as to drive the other five rotating arms to rotate synchronously, the clamping rods penetrate through the through holes and are parallel to the axes of the through holes and are fixedly connected with the two second connecting portions symmetrically arranged on the two sides of the frame respectively, and the two air cylinders are controlled by the electromagnetic valve and drive the six clamping rods to move synchronously towards the axes of the through holes so as to be close to each other to clamp the pipe.

The utility model provides an among the universal fixture is used in tubular product cutting, can also have such characteristic: wherein the cylinder is vertically mounted on the frame.

The utility model provides an among the universal fixture is used in tubular product cutting, can also have such characteristic, still include: and the two protective covers are respectively covered on the two groups of rotating assemblies.

The utility model provides an among the universal fixture is used in tubular product cutting, can also have such characteristic: wherein, the clamping rod is provided with an elastic clamping block.

The utility model provides an among the universal fixture is used in tubular product cutting, can also have such characteristic: wherein, the length of the clamping bar is 320 mm.

Action and effect of the utility model

According to the utility model provides a universal fixture is used in tubular product cutting, because six rotor arms are connected by six driving arms and are constituteed a runner assembly that can link, a rotor arm among two runner assemblies is connected with a cylinder respectively, and two cylinders are synchronous motion under same solenoid valve control, so under the promotion of cylinder, two sets of runner assemblies link, the tight pole of clamp that drives and connect two sets of runner assemblies rotates to the centre of a circle of through hole simultaneously, in the motion process, six tight poles of clamp equal all the time with the distance in the centre of a circle, form the different circle for the cutting of diameter, consequently, can press from both sides tightly the tubular product of the various diameters that lie in the through hole fast, one set of equipment just can adapt to the tubular product of various diameter specifications, and the work load is reduced, and the work efficiency is improved. Meanwhile, the six clamping rods are uniformly attached to the surface of the pipe along the length direction of the pipe, the pipe is prevented from being cut to rotate, the pipe is prevented from being scratched when rotating, and the quality of the pipe is improved.

Therefore, the utility model discloses an universal fixture for tubular product cutting can be nimble, quick press from both sides tightly the tubular product to various diameters, improves the cutting quality of tubular product, and equipment manufacturer and equipment user's cost all descends, is favorable to improving market competition.

Drawings

Fig. 1 is a schematic perspective view of a universal fixture according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of another perspective view of the universal fixture without the protective cover according to an embodiment of the present invention;

FIG. 3 is a front view of the universal clamp without the protective cover in an embodiment of the present invention;

FIG. 4 is a schematic view of the clamping position of the universal clamp without the protective cover according to an embodiment of the present invention; and

fig. 5 is a schematic view of a clamping state of the universal clamp in an embodiment of the present invention.

Detailed Description

In order to make the utility model realize that the technical means, creation characteristics, achievement purpose and efficiency are easy to understand and understand, it is right to combine embodiment and attached drawing below the utility model relates to a universal fixture for pipe cutting does specifically expounded.

< example >

The present embodiment specifically describes the structure and operation of the universal fixture 100 for cutting a pipe (hereinafter referred to as a universal fixture).

Fig. 1 is a schematic perspective view of a universal fixture according to an embodiment of the present invention; FIG. 2 is a schematic perspective view of another angle of the universal fixture without the protective cover according to an embodiment of the present invention; FIG. 3 is a front view of the universal clamp without the protective cover in an embodiment of the present invention; FIG. 4 is a schematic view of the clamping position of the universal clamp without the protective cover according to an embodiment of the present invention; fig. 5 is a schematic view of a clamping state of the universal clamp in an embodiment of the present invention.

As shown in fig. 1 to 5, the universal clamp 100 is used for clamping a pipe (not shown) when cutting the pipe, and includes a frame 10, two sets of rotating

assemblies

20a and 20b, two

cylinders

30a and 30b, 6 clamping rods, two guards 50, and a control part (not shown). In which cylinder 30b is not shown in fig. 1 and cylinder 30a is not shown in fig. 5.

The middle of the frame 10 is provided with a through hole 11 for the pipe to pass through. In the present embodiment, the frame 10 uses a frame of an existing pipe cutter. The control unit is a PLC (control system) of the pipe cutting machine.

The two sets of

rotating assemblies

20a and 20b have the same structure, and each set of rotating assemblies includes six rotating arms having the same structure and six transmission arms having the same structure, and the two sets of rotating assemblies are symmetrically distributed on two sides of the frame 10 along the plane where the frame 10 is located. That is, along the plane of the frame 10, the rotating arms in the rotating assembly 20a and the rotating arms in the rotating assembly 20b are symmetrical one to one, and the driving arms in the rotating assembly 20a and the driving arms in the rotating assembly 20b are symmetrical one to one.

The six arms in rotating assembly 20a are labeled 21a-1, 21a-2, 21a-13, 21a-4, 21a-5, and 21a-6, respectively, and the six actuator arms are labeled 22a-1, 22a-2, 22a-13, 22a-4, 22a-5, and 22a-6, respectively. Similarly, six rotating arms in the rotating assembly 20b are labeled as 21b-1 to 21b-6, and six transmission arms are labeled as 22b-1 to 22 b-6.

As shown in fig. 2 to 4, the rotating arm has a first mounting portion and a second mounting portion fixedly connected together, and a mounting hole is formed at the joint of the first mounting portion and the second mounting portion. The shaft 23 passes through the mounting hole to mount the first mounting portion on the frame, and the second mounting portion is fixedly connected to the clamping bar.

The six rotating shafts 23 are uniformly distributed around the through hole 11 on one side of the frame 10 in a circular ring shape, so that the six first mounting parts are uniformly distributed around the through hole 11 in a circular ring shape. Therefore, the six rotating arms 21a-1 to 21a-6 are uniformly installed on one side of the frame 10, and the six rotating arms 21b-1 to 21b-6 are uniformly installed on the other side of the frame 10. The extending direction of the transmission arm is located in the plane of the frame 10, and both ends of the transmission arm are provided with through holes respectively and are rotatably connected with the adjacent first mounting parts through rotating shafts.

The clamping rod penetrates through the through hole 11 in the axial direction of the through hole 11. Six clamping rods are respectively marked as 40-1, 40-2, 40-3, 40-4, 40-5 and 40-6 and respectively connect two mutually symmetrical rotating arms in the two groups of rotating assemblies together. The clamping bar 40-1 is illustrated here as an example, the remaining clamping bars having the same function as the clamping bar 40-1. One end of the clamping rod 40-1 is fixedly connected with the rotating arm 21a-1, and the other end is fixedly connected with the rotating arm 21 b-1. In this embodiment, the clamping bar has a length of 320 mm.

Two elastic clamping blocks 41 are fixed to each clamping bar in the extension direction of the clamping bar. The elastic clamping blocks 41 are made of polyester fibers, and the deformation of the elastic clamping blocks 41 after clamping can increase the contact area between the clamping rod and the pipe, so that the clamping force is increased, the pipe is prevented from rotating during cutting, and the contact position between the pipe and the clamping rod is prevented from being damaged.

The first installation part of the rotating arm 21a-1 is fixedly connected with the push-out rod of the air cylinder 30a, the rotating arm is used as a driving rotating arm, and the other five rotating arms 21 a-2-21 a-6 are used as driven rotating arms.

The first installation part of the rotating arm 21b-1 is fixedly connected with the pushing rod of the air cylinder 30b, the rotating arm serves as a driving rotating arm, and the other five rotating arms 21 b-2-21 b-6 serve as driven rotating arms.

The

cylinders

30a and 30b are fixed to the frame 10, and are vertically symmetrically disposed at both sides of the frame 10. The two

cylinders

30a and 30b are controlled by the same solenoid valve (not shown). The electromagnetic valve is electrically connected with the control part. The compressed air passes through the solenoid valves and then enters two air pipes (not shown), and the

air cylinders

30a and 30b are respectively communicated with one air pipe.

As shown in fig. 1, 4 and 5, two protection covers 50 are mounted on both sides of the frame 10 by a plurality of bolts 51 to cover the rotating assembly 20a or the rotating assembly 20 b.

As shown in fig. 2 and 4, during operation, the PLC sends a command, the solenoid valve is opened, the

cylinders

30a and 30b synchronously move under the push of compressed air, and respectively drive the driving rotating arms connected thereto to synchronously rotate around the rotating shaft 23 along the plane of the frame 10, and further drive the other rotating arms to synchronously rotate together in the same plane through the transmission arm, that is, all the rotating arms simultaneously rotate to positions at the same distance from the center of the through hole 11, so that the six clamping rods synchronously rotate around the axis of the through hole 11 to form a circle for cutting concentric with the through hole 11. The diameter of a circle for cutting formed by the six clamping rods is matched with the pipe, and the six clamping rods are tightly attached to the outer surface of the pipe along the axial direction of the pipe, so that the aim of clamping the pipe is fulfilled.

The diameter of the cutting circle formed when the clamping bars are rotated outwardly away from each other along the axis of the through-hole 11 is gradually increased until the clamping bars are attached to the through-hole and completely separated, as shown in fig. 2. The diameter of the circle for cutting when fully separated is equal to the maximum diameter of the pipe to be cut.

The diameter of the cutting circle formed when the clamping bars are turned towards each other along the axis of the through hole 11 is gradually reduced until 6 clamping bars are completely closed together, which is shown in fig. 4. The diameter of the cutting circle when fully drawn together is equal to the minimum diameter of the pipe to be cut.

In practical use, the diameter and depth of the through-hole 11 and the diameter range of the cutting circle are selected according to the maximum diameter pipe material and the minimum diameter pipe material to be cut, and in this embodiment, the diameter of the through-hole 11 is 505mm, the depth of the hole is 560mm, and the diameter range of the cutting circle is 50mm to 400 mm.

When in use, in a standby working state, the electromagnetic valve receives the instruction of the cutting machine PLC, resets under the action of the internal spring, the external gas circuit is communicated with the rod cavity of the cylinder, the cylinder rod retracts to drive the rotating arm and the clamping rod to move outwards and away from each other, so that the diameter of a circle for cutting formed by the clamping rod is larger than that of a pipe to be cut, the tube is then drawn into the through hole 11 of the frame 10 with an external tractor in front of the universal clamp 100, when the length of the pipe passing through the length measuring wheel on the tractor reaches the set length, a clamping cutting signal is given to the PLC of the cutting machine, the PLC controls the electromagnetic valve to reverse, so that the clamping rods move inwards to approach each other until the pipe is clamped, the tube is then cut by a cutting machine located behind the universal clamp 100, the cut tube is transported away by a tube storage device, and the clamping bars are moved outwardly away from each other to a fully separated position after the cutting is completed.

Effects and effects of the embodiments

According to the universal fixture for cutting the pipes, which is provided by the embodiment, as the six rotating arms are connected by the six transmission arms to form a rotating assembly capable of being linked, one rotating arm in the two rotating assemblies is respectively connected with one cylinder, and the two cylinders synchronously move under the control of the same electromagnetic valve, under the pushing of the cylinders, the two groups of rotating assemblies are linked to drive the clamping rods connected with the two groups of rotating assemblies to simultaneously rotate towards the circle center of the through hole, in the moving process, the distances between the six clamping rods and the circle center are always equal to form circles for cutting with different diameters, so that pipes with various diameters in the through hole can be rapidly clamped, one set of equipment can adapt to pipes with various diameters, the workload is reduced, and the working efficiency is improved. Meanwhile, the six clamping rods are uniformly attached to the surface of the pipe along the length direction of the pipe, the pipe is prevented from being cut to rotate, the pipe is prevented from being scratched when rotating, and the quality of the pipe is improved.

In addition, the deformation of the elastic clamping block arranged on the clamping rod can further increase the contact area between the clamping rod and the pipe, the clamping force is larger, and the pipe is further prevented from rotating during cutting.

In addition, the two cylinders are controlled by the same electromagnetic valve, so that the synchronous motion of the two cylinders is ensured, and the electromagnetic valve is economical and practical and is beneficial to reducing the cost.

In addition, cylinder and runner assembly all install on current pipe cutting machine, and the solenoid valve inserts among pipe cutting machine's the PLC, therefore universal fixturing has utilized current frame and the PLC of cutting machine, has reduced the cost of manufacturer and user.

In addition, the clamping rod runs inside the frame of the pipe cutting machine, and the safety is high.

In addition, the rotating assembly is covered by the protective cover, so that the pipe cutting machine provided with the universal clamp is attractive in whole.

In addition, the cylinder is vertically arranged on a frame of the pipe cutting machine, only the space in the vertical direction is occupied, the transverse size cannot be increased, and the integral width of the pipe cutting machine provided with the universal clamp can be reduced as much as possible.

The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.

Claims

1. A universal clamp for cutting a pipe is used for clamping the pipe when the pipe is cut, and is characterized by comprising:

a frame, two cylinders, two groups of rotating assemblies, six clamping rods and an electromagnetic valve,

wherein, the middle of the frame is provided with a through hole for the pipe to pass through,

the two groups of rotating assemblies are symmetrically distributed on two sides of the frame along the plane of the frame, each group of rotating assemblies comprises six rotating arms and six transmission arms,

the six rotating arms and the six transmission arms in one group of the rotating assemblies are respectively symmetrical with the six rotating arms and the six transmission arms in the other group of the rotating assemblies in a one-to-one correspondence manner,

the six rotating arms are arranged on one side of the frame and are uniformly distributed around the through hole in an annular shape,

the rotating arm comprises a first connecting part and a second connecting part, the first connecting part is fixedly connected with the second connecting part, the first connecting part is rotatably arranged on the frame, the second connecting part is used for being fixedly connected with the clamping rod,

two adjacent first connecting parts are respectively connected with one end of one transmission arm in a rotating way, one first connecting part is connected with the air cylinder and is used for rotating under the pushing of the air cylinder so as to drive the other five rotating arms to rotate synchronously,

the clamping rod penetrates through the through hole and is parallel to the axis of the through hole, and is respectively and fixedly connected with the two second connecting parts which are symmetrically arranged at the two sides of the frame,

the two air cylinders are controlled by the electromagnetic valve, and drive the six clamping rods to synchronously move towards the axis of the through hole so as to approach each other to clamp the pipe.

2. The universal clamp for cutting pipes according to claim 1, wherein:

wherein the cylinder is vertically mounted on the frame.

3. The universal clamp for cutting pipes of claim 1, further comprising:

two protective covers are arranged on the front face of the frame,

wherein, two the protection casing covers respectively on two sets of rotating assembly.

4. The universal clamp for cutting pipes according to claim 1, wherein:

wherein, the clamping rod is provided with an elastic clamping block.

5. The universal clamp for cutting pipes according to claim 1, wherein:

wherein, the length of the clamping rod is 320 mm.