CN212397800U

CN212397800U - Pipe piercing device

Info

Publication number: CN212397800U
Application number: CN201820958518.XU
Authority: CN
Inventors: 中川洋
Original assignee: Nisshinbo Mechatronics Inc
Current assignee: Nisshinbo Mechatronics Inc
Priority date: 2017-06-30
Filing date: 2018-06-21
Publication date: 2021-01-26
Anticipated expiration: 2028-06-21
Also published as: JP2019010659A; JP6859214B2; JP2021100767A; JP7080371B2; CN109201860A; TW201904682A; TWI755550B

Abstract

The utility model provides a do not have the perforation processingequipment of the tubular product of interference etc. of direction mould and waste material, in the perforation processingequipment of tubular product, guarantee the space of the portion of acceping of the waste material of production fully when the tubular product of perforation processing thick plate. The punching device for processing the pipe material is provided with an outer die device arranged on the outer side of the pipe material and an inner die device which is inserted into the inner side of the pipe material and is matched with a punch of the outer die device to process the pipe material, and the guide die used for the punching device for processing the pipe material is composed as follows. A mechanism for preventing the guide die (P) from deeply entering into the inner die device when the pipe is punched is arranged in the guide die (P), and the waste generated when the thick pipe is punched can be easily blown by air. During the punching process, the punch is lowered to reach a position near the bottom dead center, and the front end of the guide die is positioned inside the guide hole of the inner die device.

Description

Pipe piercing device

Technical Field

The present invention relates to a piercing apparatus for processing a pipe, and more particularly to a piercing apparatus which can effectively process piercing residue (hereinafter referred to as "waste") generated by piercing processing using an inner die device inserted into the pipe and an outer die device inserted into the pipe and disposed outside the pipe.

Background

In the related art, when a pipe material is subjected to a process such as piercing, the process is completed by the cooperation of an outer die device disposed outside the pipe material and an inner die device inserted and disposed inside the pipe material. The outer die device includes a guide die for positioning the inner die device and the outer die device in the width direction of the pipe. The guide die is fixedly disposed together with a punch die for performing punching. Further, the guide die is required to position the inner die device before punching, and the guide die tip is set to be disposed closer to the action face of the die of the inner die device than the punch die tip.

In the case of this method, if the guide die tip is located below the punch cutting edge and the punch starts to descend to a position near the bottom dead center, the passage of the scrap becomes narrow and the scrap cannot be discharged if the scrap is blown up by air in the longitudinal direction of the pipe material. In the case of piercing a thicker plate pipe, if it is necessary to extend the distance from the tip of the punch die to the tip of the guide die as compared with the case of piercing a thin plate pipe, such a problem becomes remarkable. When a thick-plate pipe is perforated, the thickness of the scrap generated by the perforation is also increased. The waste is accumulated in the inner die device, and the tip of the guide die interferes with the waste accumulated in the inner die device as the guide die descends during the punching process, thereby causing a problem that the punching process cannot be normally performed.

SUMMERY OF THE UTILITY MODEL

[ problem to be solved by the utility model ]

An object of the utility model is to overcome prior art's not enough and provide a perforation processingequipment of tubular product, use to inside mould device that inserts the configuration of tubular product and outside mould device that disposes outside the tubular product, outside mould device possesses the direction mould that advances location of the width direction of the tubular product of inside mould device and outside mould device to when direction mould and inside mould device advance line location, the mould for the direction is not inserted and is fully ensured the space of the waste material portion of holding of perforation dregs (waste material) to the interior depth of side mould device.

[ means for solving problems ]

A first aspect of the present invention to achieve the above object is a piercing apparatus including an outer die device disposed outside a pipe material, and an inner die device inserted into the pipe material and configured to process the pipe material in cooperation with a punch of the outer die device, the piercing apparatus including the following features.

The inner die device is divided into two or more parts, and comprises an expanding/contracting mechanism for reciprocating the divided die components of the inner die device to the opening direction of the pipe material and lifting the divided die components along the punching direction of the pipe material by the wedge function of the expanding/contracting mechanism, and a transmission member for transmitting the force for lifting the divided die components,

the outer mold device includes a guide mold for positioning the outer mold device and the inner mold device,

the guide die includes a mechanism that cannot be inserted into an inner die device by a predetermined size or more in the piercing process, the inner die device includes a guide hole into which the guide die is inserted, and the punch is lowered to reach a position near a bottom dead center in the piercing process, and a tip of the guide die is positioned inside the guide hole of the inner die device.

The first technical means produces the following effects.

Even when a thick pipe is punched, the guide die of the outer die device is used for positioning the outer die device and the inner die device in the width direction, and even if the guide die is inserted into the inner die device, the guide die cannot be inserted by a certain size or more. When a thick-walled pipe is pierced using a guide die having a conventional structure, the guide die penetrates deeply into the inner die device. Therefore, the guide die enters the scrap storage portion of the inner die unit, and air blowing up of scrap is inhibited. Through the utility model discloses, the direction mould does not invade more than the certain size to waste material portion of acceping in, can ensure the space that the air blown the waste material fully, does not arouse the obstacle to blowing the waste material by the air completely. The scrap stacked in the scrap accommodating portion is not brought into contact with the guide die at all, so that normal punching is not hindered at all.

A piercing device according to a second aspect has the following features in the first aspect.

The mechanism is a mechanism in which, when the punching device having the guide die with the shoulder portion is lowered, the shoulder portion comes into contact with a member of the outer die device, and the tip end of the guide die cannot be inserted into the inner die device by a predetermined size or more.

According to the second aspect, the same effects as those of the first aspect can be produced.

Drawings

Fig. 1 is an overall view (front view) of the piercing apparatus of the present invention.

Fig. 2 is an overall view (plan view) of the piercing apparatus of the present invention.

Fig. 3(a) and 3(b) are schematic views of the mechanism of the present invention in which the guide die does not intrude into the inner die device by a predetermined size or more.

Fig. 4(a) to 4(c) are schematic views of an outer die device using a guide die used in the piercing apparatus of the present invention.

Fig. 5(a) to 5(c) are schematic views of an expanding/contracting mechanism of an inner die device used in a piercing apparatus according to the present invention.

The reference numbers illustrate:

1: a punch body;

2: a stamping device;

3: an outer mold device;

4: an inner mold device;

5: a work table;

6: connecting blocks;

7: a punch fixing plate;

8: punching a base platform;

9: a frame;

10: a slide driving device;

10 a: a cylinder;

11: a positioning drive device;

14: a clamping device;

15: a mobile unit;

16: a guide rail;

17: a ball screw;

18: a servo motor;

19: a standard block;

20: a clamping cylinder;

21: a control device;

22: a guide bar;

23: stripping plates;

24: a plate spring;

25: a blade portion of the punch (a punch for machining);

26: a cutting edge part;

27: punching;

28: a waste material accommodating portion;

29: a template;

31. 32, 33: an air passage;

41: a transmission member;

42: a lower expansion/contraction block;

43: an upper expansion/contraction block;

44: an opening (inner mold device);

51: a stopper;

52: a lengthwise clamping device;

a: an angular tube mounting section (movable table);

b: a mold positioning portion;

c: an expanding/contracting portion of the inner mold device;

g: guide holes (templates);

h: a guide hole;

k: a contact portion (a contact portion of the stripper plate and the shoulder portion of the guide die body);

p: guiding the die;

p1: a mold body;

p2: a shoulder portion;

p3: a spring;

p4: a stud screw;

s: waste materials;

t: spacing;

w: an angle pipe.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is an overall view (front view) of the piercing apparatus of the present invention, and fig. 2 is an overall view (plan view) of the piercing apparatus of the present invention, fig. 3(a) and fig. 3(b) are views of the guide die of the present invention, which is not a schematic view of a mechanism that is more than a certain size and intrudes into the inner die device, fig. 4(a) -fig. 4(c) are schematic views of an outer die device using the guide die of the piercing apparatus of the present invention, and fig. 5(a) -fig. 5(c) are schematic views of an expanding/contracting mechanism of the inner die device of the piercing apparatus of the present invention.

<1> construction of piercing apparatus

The piercing apparatus (hereinafter referred to as "punch") according to the present invention will be described with reference to fig. 1 and 2. In fig. 1, reference numeral 1 denotes a press main body, 2 denotes a press device for raising and lowering an

outer die device

3, 4 denotes an inner die device, and 5 denotes a table on which a pipe material is mounted and movable. The press device 2 is disposed on the press main body 1, and is connected to the outer die device 3 through a punch fixing plate 7 disposed on the press main body 1 by a connecting block 6. A guide rod 22 standing on the press base 8 of the press main body 1 and slidably guiding the punch fixing plate 7 in the vertical direction, and a stripper plate 23 attached to the punch fixing plate 7 together with the outer die unit 3. The force of the punch device 2 lifts the outer die device 3 and the stripper plate 23 through the connecting block 6 and the punch fixing plate 7. Reference numeral 24 denotes a plate spring provided between the stripper plate 23 and the

punch fixing plate

7, 25 denotes a blade portion of the punch of the outer die apparatus 3, P denotes a guide die, 26 denotes a cutting blade portion of the

inner die apparatus

4, 27 denotes a punch hole, and an edge of an upper portion of the punch hole 27 is constituted by the cutting blade portion 26. Reference numeral 28 denotes a scrap accommodating portion of the inner die unit 4 located below the cutting edge portion 26. The shape of the tip of the blade portion 25 of the punch may be a slightly inclined shape widening upward as in the schematic view of the present embodiment, or may be a generally flat shape.

The inner die apparatus 4 is used in a state where a pipe material (hereinafter referred to as an "angular pipe W") as a work is inserted inside. The angular pipe W is fixed to the table 5. The inner mold device 4 is connected to a slide driving device 10 disposed on the frame 9, and the transmission member 41 performs an expansion/contraction operation of the inner mold device 4 in the vertical direction by extending and contracting a cylinder 10a of the slide driving device. The components of the inner mold device 4 are provided with an air passage 31, an air passage 32, and an air passage 33 for disposing the scraps S generated by the punching process. The outer die unit 3 is vertically moved up and down on the upper part of the press machine, and the inner die unit 4 is supported by the frame 9 and the table 5 on the press base 8 on the lower part of the press machine 1.

<2> method for piercing corner pipe

The method of piercing a corner pipe will be described with reference to fig. 1 and 2. As described above, the angular pipe W is set on the table 5 in a state of being temporarily positioned in the width direction and being fixedly positioned in the length direction. The angular tube W has a length of 2m to 4 m. The table 5 is movable along a guide rail 16 disposed on the press base 8. The table 5 is connected to the positioning drive device 11 via a moving unit 15. The positioning drive device 11 is composed of a ball screw 17 and a servomotor 18. The angular pipe W is positioned at a machining position in the longitudinal direction of the outer mold device 3 by the positioning drive device 11.

The positioning process in the width direction of the angular tube W is as follows. As seen from the direction of the arrow X in fig. 2, a clamp 14 is provided on the press base 8. The clamping device 14 is formed by a standard block 19 and a clamping cylinder 20. The angular pipe W, which is positioned and fixed in the longitudinal direction on the table 5, is pressed against the standard block 19 by the clamp cylinder 20, and the angular pipe W is positioned in the width direction. The clamp device 14 is in a unclamped state (unclamp) while the table 5 on which the angular pipe W is mounted is moving, and clamps the angular pipe W after the table 5 moves to the machining position.

The positioning control of the angular pipe W, the control of the press apparatus 2, the expansion/contraction control of the inner die apparatus 4, the control of the slide drive apparatus 10, the control of the positioning drive apparatus 11, and the control of the clamp apparatus 14 are performed by the control apparatus 21 shown in fig. 1 and 2. Further, the control device controls air blow (air blow) for discharging the scrap (perforation dross) S generated in the perforation process.

The angular pipe W positioned and fixed in the longitudinal direction on the table is positioned with respect to the outer die device 3 by the positioning drive device 11, and after the positioning is completed, the angular pipe W is clamped by the clamp device 14 provided on the press base 8 to complete the positioning in the width direction. Thereafter, as shown in fig. 4(c), the outer die device 3 is lowered by the action of the press device 2, and the angular pipe W is perforated by the engagement with the inner die device 4. After the machining is completed, the clamp 14 is released. The above operations are continuously performed to perform a plurality of piercing operations at a predetermined pitch on the angular pipe W. After the completion of the piercing process, the table 5 on which the angular pipe W is mounted is returned to the original position, and the angular pipe W after the completion of the piercing process is separated from the table 5. This ends the series of punching operations. As will be described later, the scraps S generated by the piercing process are deposited in the vicinity of the opening 44 of the angled pipe W. When the worker separates the finished angular pipe W, the worker discards the scrap S accumulated in the opening 44 of the angular pipe W in a bucket or the like.

The following describes, with reference to the drawings, an expanding/contracting mechanism used for the table 5, the guide die P of the outer die unit 3, and the inner die unit 4, which are specific components of the piercing apparatus of the present invention provided in the above-described press machine.

<3> construction of the work bench

The table 5 corresponds to the corner tube mounting portion a of fig. 1. As described above, the table 5 is a portion that is fixed to carry the angular pipe W to be perforated and positioned in the longitudinal direction thereof, and is moved by the positioning drive device 11 in the longitudinal direction of the angular pipe W to be perforated with respect to the outer die device 3. The table 5 has a function of positioning and moving, and a function of positioning and fixing the angular pipe W in the longitudinal direction on the table. In fig. 1 and 2, the number of the angular tubes W is one, but not limited to this, and a plurality of angular tubes W may be provided. The punching processing of a plurality of corner pipes of the same type can be carried out through the structure.

The table 5 is connected to the moving unit 15 via the positioning drive 11. The table 5 is moved along the rail 16 by the positioning drive device 11, and is positioned at a punching position with respect to the corner pipe of the outer die device 3.

The angular pipe W is positioned and fixed in the longitudinal direction on the table 5 by a longitudinal stopper 51 and a longitudinal clamp 52. The table is moved to move the angled pipe W to the piercing position. Therefore, since the angular pipe W does not slide on the workpiece housing member such as a roller, a flaw due to the sliding does not occur on the angular pipe W. As described above, the width direction of the angular pipe W is clamped by the clamp device 14 provided on the press base 8 before the piercing process, and is released after the piercing process is completed.

<4> Structure of guide mold P of outside mold device

The guide mold P is disposed at a portion corresponding to the mold positioning portion B of fig. 1. The guide mold P will be described with reference to fig. 3(a), 3(b), and 4(a) to 4 (c). Fig. 3(a) is a schematic view of a configuration of the guide die P in a state where the press apparatus is raised, and fig. 3(b) is a schematic view of a state of the guide die P in a state where the press apparatus is lowered. Fig. 4(a) to 4(c) are schematic views showing the operation sequence of the guide mold P.

The guide die P is used for positioning the outer die unit 3 and the inner die unit 4 in the outer die unit 3, and is provided independently of the processing die (hereinafter referred to as "blade portion 25 of punch"). The number of the guide molds P may be more than one. In fig. 3(a) and 3(b), two guide molds P are provided in the width direction of the angular tube for positioning the outer mold device 3 and the inner mold device 4. In addition, the method of arranging the guide mold P is not limited to the above-described method. As shown in fig. 3 a and 3 b, the front end of the guide mold P has a shape that can be easily inserted into a guide hole H (see fig. 2) of the guide mold P of the inside mold unit 4. The dimensional relation between the guide die P and the guide hole H is as follows: the interval in the longitudinal direction of the angular tube W is large, but the interval in the width direction of the tube is almost extremely small. The guide die P of the outer die device has a length dimension about 5mm longer than the tip of the blade portion 25 of the punch for machining. However, in the case of the thick-plate angular pipe W, the dimension difference between the blade 25 of the punch and the tip of the guide die becomes longer than 5 mm. If this dimension difference becomes long, the guide die P enters deeply into the scrap accommodating portion 28 (see fig. 1) of the inner die unit 4. If the guide die P enters deeply into the scrap accommodating portion 28, the air blowing up of the scrap S generated by the piercing process is hindered, and the guide die P and the scrap S may interfere with each other. In order to solve such a problem, the guide mold P is configured as follows.

The guide die P is composed of a die body P1, a spring P3 and a stud screw P4. The die body P1 is in a state where the stripper plate 23 is inserted. The punch 2 descends to descend the die body P1, and the tip thereof is inserted into a guide hole H (see fig. 2) of the inside die unit 4. Then, the tip end of the mold body P1 is inserted into the inside mold device 4 by a predetermined size or more, the shoulder portion P2 of the mold body P1 abuts against the abutting portion K of the stripper plate 23, and the guide mold P is not further inserted into the inside mold device 4. Further, the press device 2 is lowered to a state where the blade portion 25 of the punch comes into contact with the angular tube W, and the shoulder portion P2 of the die body P1 of the guide die P is also held in contact with the abutting portion K of the stripper plate 23. As the pressing device 2 descends, the spring P3 is deformed, and the stud screw P4 moves up along the guide hole G of the die plate 29, and reaches the bottom dead center position shown in fig. 3 (b). In fig. 3(b), the case of the tip of the guide die in the prior art is shown by a two-dot chain line. If there is no mechanism for preventing the guide die P from entering the waste container 28 at a predetermined size or more in the process of piercing the thick angular pipe W, it is understood that the guide die tip enters deeply into the waste container 28, and the space is narrowed.

The guide mold P operates as follows. The angular pipe W to be machined is moved to a fixed position for machining by the positioning drive device 11. In the state of fig. 4(a), the guide die P of the outer die apparatus 3 is inserted into the guide hole H while being lowered. At this time, the expanding/contracting raising operation (details will be described in <5 >) of the inner mold device 4 is completed, and after the upper expanding/contracting block comes into contact with the inner surface of the angular tube W, the guide mold P is lowered and inserted into the guide hole H, and the state of fig. 4(b) is obtained. At this time, the guide die P and the blade portion 25 of the punch are lowered together, but the guide die P is long and is inserted into the guide hole H of the inner die device 4 first. Through the above process, the inner die apparatus 4 completes the positioning of the outer die apparatus 3 and the pipe W in the width direction. Thereafter, in fig. 4(b) (before the blade portion 25 of the punch is lowered), the blade portion 25 of the punch is lowered to complete the piercing process as shown in fig. 4 (c).

Thus, by using the guide mold P, the coaxial positioning adjustment of the outer mold device 3 and the inner mold device 4, which is necessary in the prior art, is not required. As described above, the guide die P has the configuration shown in fig. 3(a) and 3(b), and even if the blade portion 25 of the punch is lowered, the tip end thereof does not enter the inner die 4 by a predetermined size or more. Further, at the time of scrap disposal, the guide mold P does not intrude deeply into the scrap accommodating portion 28 of the inner mold 4 and hinder the scrap disposal by the air. In addition, there is no interference between the scrap S and the guide mold P.

<5> expansion/contraction mechanism of inside die device

The expanding/contracting mechanism of the inner mold device 4 is a portion corresponding to the expanding/contracting portion C of fig. 1. The expanding/contracting mechanism of the inner mold device will be described with reference to fig. 5(a) to 5 (c).

The inner die device 4 is divided into an upper expansion/reduction block 43 and a lower expansion/reduction block 42. Both are configured to slide in contact with each other on a slightly inclined surface. The upper expanding/contracting block 43 moves in the vertical direction so as to maintain the horizontal position with respect to the press base 8 of the press machine 1. The upper expanding/contracting block 43 is raised/lowered in the vertical direction by the lower expanding/contracting block 42 moving in the horizontal direction by the action of the air cylinder 10a or the slide driving means 10. At this time, the punch hole 27 of the upper expanding/contracting block 43 and the guide die P of the outer die device 3 and the blade portion 25 of the punch are raised in a state where their relative positions with respect to the longitudinal direction of the angular pipe W are not changed.

The inner die device 4 is operated in a state of being inserted inside the angular pipe W as the work. The ascending operation of the upper expansion/contraction block 43 is as follows. In the state shown in fig. 5(a), the outer die apparatus 3 is lowered and the guide die P is also lowered, so that the coaxial positioning of the outer die apparatus 3 and the inner die apparatus 4 is completed. Next, when the lower expanding/contracting block 42 is moved in the horizontal direction (the direction of the arrow Y in fig. 5 (a)) by the cylinder 10a (see fig. 1 and 2), the upper expanding/contracting block 43 rises by about 0.5mm to be in the state shown in fig. 5(b), and the interval T in fig. 5(a) disappears. Fig. 5(b) shows a state before the blade portion 25 of the punch is lowered (before the punching process). Therefore, the upper surface of the upper expanding/contracting block 43 and the lower surface of the lower expanding/contracting block 42 are in close contact with the upper and lower inner surfaces of the angular pipe W. Thereafter, the blade 25 of the punch is lowered to perform the piercing process.

The descending action of the upper expansion/contraction block is as follows. Fig. 5(c) shows a state where the punching process is completed and the blade portion 25 of the punch is raised. In the state of fig. 5(c), the outer die device 3 including the guide die P is raised, and the cylinder 10a moves in the Z direction of the horizontal direction of fig. 5(c), and the lower expansion/contraction block also moves in the Z direction. As a result, the upper expanding/contracting block 43 is lowered to the state shown in fig. 5(a), and the vertical dimension of the inner die device 4 is reduced to be smaller than the inner dimension of the angular pipe W, so that the inner die device 4 can be easily inserted into the inner side of the angular pipe W having a length of 2m to 4 m. In addition, since the hole-piercing portion of the angular pipe W is brought into close contact with the inner die device 4 by the expanding/contracting function during the hole-piercing process, the distortion of the surface to be pierced is reduced during the process, the occurrence of burrs is extremely reduced, and the positional accuracy of the hole-piercing process is remarkably improved as compared with the conventional processing method.

The piercing apparatus of the present embodiment has been described as an apparatus including the movable table 5 described in <3> on which the angular pipe W is mounted, the guide die P described in <4>, and the expanding/contracting mechanism of the inner die apparatus 4 described in <5>, and the piercing apparatus of the present invention may be of the following form.

The present invention can also be applied to a device for performing a punching process by positioning and moving an angular pipe W by fixing the angular pipe W by a positioning drive device without using the movable table 5 for carrying the angular pipe W described in <3> of the present embodiment.

Claims

1. A tube piercing apparatus, comprising:

an outer die device disposed outside the pipe; and

an inner die device inserted into the pipe and cooperating with the punch of the outer die device to process the pipe,

2. The tube piercing apparatus according to claim 1, wherein: the mechanism is such that when the piercing device having a shoulder portion in the guide die is lowered, the shoulder portion comes into contact with a member of the outer die device, and the tip end of the guide die cannot be inserted into the inner die device by a predetermined size or more.