CN212525714U

CN212525714U - Metal round pipe shrinking equipment

Info

Publication number: CN212525714U
Application number: CN202022037067.6U
Authority: CN
Inventors: 叶立成
Original assignee: Foshan Nanhai Xinzhicheng Electronic Manufacturing Co ltd
Current assignee: Foshan Nanhai Xinzhicheng Electronic Manufacturing Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-02-12
Anticipated expiration: 2030-09-17

Abstract

The utility model relates to a pipe fitting processing equipment field, concretely relates to reduce equipment of metal pipe diameter, include: the hydraulic device comprises a door-shaped frame, wherein an oil pressure device for providing power is fixed at the top of the door-shaped frame, a piston at the bottom surface of the oil pressure device is fixedly connected with a metal pressure rod, and the bottom end of the metal pressure rod is clamped with an upper positioning die for keeping the vertical position of a metal round pipe; the lower die assembly is arranged in the middle of the door-shaped frame and comprises a pipe reducing die for reducing a pipe and a lower positioning die arranged on the pipe reducing die and used for placing a metal round pipe. The beneficial effects of this equipment are that mechanical structure is simple, and occupation space is little, and the metal pipe wall that the pipe contracted finishes is even, and the surfacing is pleasing to the eye, can not appear being heated inhomogeneous condition in the heating process and lead to the pipe wall to appear the crack.

Description

Metal round pipe shrinking equipment

Technical Field

The utility model relates to a pipe fitting processing equipment field, concretely relates to equipment of reducing metal pipe diameter.

Background

The PTC heating tube is generally composed of a PTC ceramic heating element and a metal outer sleeve. The PTC heating element has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and electricity-saving electric heater. In the pipe-loading link of preparation PTC heating rod, need to wrap up the PTC heating piece that has the insulating film and press from both sides and combine into the whole circle and externally registrate the metal outer tube in two semicircle metal electrodes, for the convenience of assembly, the internal diameter that needs the metal pipe is slightly greater than the external diameter of its inside assembly part, in order to improve the heat transfer efficiency of inside heating element and external environment, then need compress the diameter of its metal outer tube, make the metal pipe wall of outer tube and inside heating element in close contact with and then realize the purpose that improves the energy efficiency ratio, the waste of the energy has been avoided. However, the conventional metal pipe shrinking device uses an oil pressure mouth-building machine, the oil pressure mouth-building machine uses a multi-segment oil pressure head die to simultaneously extrude and enclose the metal pipe into a circle, the diameter of the circle is smaller than that of a processed pipe, so that the aim of reducing the pipe diameter is achieved by simultaneously pressing the metal pipe inside towards the direction of the circle center through the multi-segment oil pressure head die, the pipe diameter is compressed in a mode that the metal pipe contacts the die in the direction of the circle center, the force received by the metal pipe is not uniform, and the phenomenon that the pressing is uneven at the gap part of the metal pipe contacting the segment die is caused.

Disclosure of Invention

The utility model discloses a purpose is overcome prior art not enough promptly, provides a metal pipe draw equipment that the metal pipe wall thickness is even that the shrink is effectual, the compression back metal pipe surfacing is pleasing to the eye and the processing finishes.

In order to achieve the above object, the utility model provides a metal pipe draw equipment, include: the hydraulic pipe drawing device comprises a door-shaped frame and an oil pressure device fixed at the top of the door-shaped frame, wherein a piston at the bottom of the oil pressure device is fixedly connected with a metal pressure rod, so that the bottom end of the metal pressure rod is clamped with an upper positioning die for positioning a metal circular pipe in order to avoid the defect of pipe drawing caused by deflection of the metal circular pipe in the pushing process; the lower die assembly is arranged in the middle of the door-shaped frame and comprises a pipe reducing die for reducing a pipe and a lower positioning die arranged on the pipe reducing die and used for containing a metal round pipe.

As a further improvement, door type frame both sides are equipped with two spinal branch daggers, the top position of support column is equipped with the frame roof, oil hydraulic means fixes the higher authority of frame roof, the metal depression bar passes the trompil downwardly extending who sets up at frame roof central point and put, the middle part of support column is equipped with the frame bottom plate, the bed die subassembly sets up the higher authority of frame bottom plate enters into the device that holds below the frame for the metal pipe that makes the draw accomplish smoothly through the frame bottom plate, frame bottom plate central point is equipped with the bottom plate round hole that is used for passing the metal pipe that processing finished, the lower extreme position of support column is provided with two perpendicular to the frame base of support column.

As a further improvement, go up positioning die and be hollow structure's cylinder, it is equipped with the last location round hole that is used for inserting the metal pipe to go up the positioning die bottom surface, the metal depression bar bottom is equipped with the oil pressure head that is used for impelling the metal pipe, the oil pressure head with the metal depression bar passes through threaded connection fixed, the diameter of oil pressure head is greater than the diameter of metal depression bar, the metal depression bar passes go up the opening of positioning die top surface with the oil pressure head is connected, the inside top surface position of going up positioning die is equipped with and is used for the registrate to be in the outside recess of oil pressure head.

As a further improvement, the lower positioning die is a cylinder, and for the convenience of waiting the metal pipe of processing can be before the draw vertical place on the lower die assembly, the central point of lower positioning die is equipped with the lower location round hole that can insert the metal pipe perpendicularly.

As a further improvement, draw pipe mould central point is equipped with the draw round hole, in the less round hole of the smooth entering diameter of metal pipe in the compression pipe diameter in-process for the order treats processing, and the in-process transition part atress that gets into is even, can not cause the pipe flaw to appear, the side surface of draw round hole with linking portion between the upper surface of draw pipe mould is the draw circular arc that is used for the draw, the draw circular arc is quarter circular arc structure.

In order to enable the pipe reducing mold to be suitable for circular pipes with different sizes, the pipe reducing mold is of a replaceable structure, so that the pipe reducing mold can be quickly and accurately placed on a mold base after being replaced conveniently, the pipe reducing mold and the rack bottom plate are designed to be separable, a positioning block for quickly positioning the pipe reducing mold is arranged on the upper surface of the rack bottom plate, and a positioning groove for being sleeved on the positioning block is formed in the bottom surface of the pipe reducing mold;

as a further improvement of the utility model, go up positioning die's external diameter D1 with positioning die's external diameter D2 equals down, go up positioning die's internal diameter D3 with positioning die's internal diameter D4 equals down, positioning die's internal diameter D4 is greater than down pipe round hole's internal diameter D5, pipe round hole's internal diameter D5 equals bottom plate round hole's internal diameter D6, oil pressure head's diameter D7 is less than pipe round hole's internal diameter D5.

As a further improvement of the utility model, go up the internal diameter D1 of location round hole with the size of the internal diameter D2 of location round hole down is 16.2mm, the internal diameter D5 of reducing the round hole with the internal diameter D6 of bottom plate round hole is 15.5mm, the radius R1 of reducing the circular arc is 0.3 mm.

The utility model has the advantages that: the upper and lower positioning die fixes a position the tubular metal resonator simultaneously, the condition of having avoided the tubular metal resonator to contract the pipe in-process to appear the slope leads to the product flaw to appear, use the pressure evenly distributed that the circular shape draw the mould can make tubular product receive at the pipe in-process, keep the bright and clean planarization of tubular product surface, compare in traditional horizontal pipe reducer, this machine only adopts a set of oil pressure equipment, and the volume is less, makes things convenient for operating personnel to operate alone, has reduced the user demand in equipment space, has improved economic benefits.

Drawings

For the purpose of illustration, the invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.

Fig. 1 is a cross-sectional view of a metal round pipe shrinking apparatus according to the present invention;

fig. 2 is a schematic sectional diameter view of a metal round pipe shrinking apparatus according to the present invention;

FIG. 3 is a perspective view of the pipe contracting mold, the mold base and the positioning ring of the present invention;

fig. 4 is a perspective view of the frame and the cylinder compressor of the present invention;

in the figure: 1-door type frame, 101-frame top plate, 102-support column, 103-frame bottom plate, 1031-bottom plate circular hole, 1032-positioning block, 104-frame base, 201-oil pressure device, 202-metal pressure bar, 203-oil pressure head, 204-upper positioning mould, 205-upper positioning circular hole, 301-lower positioning mould, 302-lower positioning circular hole, 401-pipe reducing mould, 402-pipe reducing circular hole and 403-pipe reducing circular arc.

Detailed Description

The utility model discloses a metal pipe draw equipment do further explanation with reference to the attached drawing below:

as shown in fig. 1, 2, 3 and 4, a metal round pipe reducing apparatus includes: the device comprises a door-shaped frame 1 and an oil pressure device 201 fixed at the top of the door-shaped frame 1, wherein a piston at the bottom surface of the oil pressure device 201 is fixedly connected with a metal pressure rod 202, and the bottom end of the metal pressure rod 202 is clamped with an upper positioning die 204 for keeping the vertical position of a metal round pipe; the middle part of the door-shaped frame 1 is provided with a lower die assembly, and the lower die assembly comprises a pipe reducing die 401 for reducing a pipe and a lower positioning die 301 arranged on the pipe reducing die 401 and used for placing a metal round pipe.

As a further improvement, 1 both sides of door type frame are equipped with two support columns 102, the top position of support column 102 is equipped with frame roof 101, oil pressure device 201 is fixed the higher authority of frame roof 101, metal depression bar 202 passes the trompil downwardly extending that sets up at frame roof 101 central point and put, the middle part of support column 102 is equipped with frame bottom plate 103, lower mould subassembly sets up the higher authority of frame bottom plate 103, frame bottom plate 103 central point is equipped with the bottom plate round hole 1031 that is used for passing the metal pipe that processing finished, the lower extreme position of support column 102 is provided with two perpendicular to the frame base 104 of support column 102.

As a further improvement, go up positioning die 204 and be hollow structure's cylinder, it is equipped with the last location round hole 205 that is used for inserting the metal pipe to go up positioning die 204 bottom surface, metal depression bar 202 bottom is equipped with the oil pressure head 203 that is used for impelling the metal pipe, oil pressure head 203 with metal depression bar 202 passes through threaded connection and fixes, the diameter of oil pressure head 203 is greater than metal depression bar 202's diameter, metal depression bar 202 passes go up the opening of positioning die 204 top surface with oil pressure head 203 connects, go up the inside top surface position of positioning die 204 be equipped with be used for the cover in oil pressure head 203's recess.

As a further improvement of the present invention, the lower positioning mold 301 is a cylinder, and the central portion of the lower positioning mold 301 is provided with a lower positioning circular hole 302 capable of being vertically inserted into the metal circular tube.

As a further improvement of the utility model, draw pipe mould 401 central point to be equipped with and draw pipe round hole 402, draw the side surface of pipe round hole 402 with join portion between the upper surface of pipe mould 401 is the reducing pipe circular arc 403 that makes the pipe evenly reduce, reducing pipe circular arc 403 is quarter circular arc structure.

As a further improvement of the present invention, the pipe reducing mold 401 and the rack bottom plate 103 are designed separately, the upper surface of the rack bottom plate 103 is provided with a positioning block 1032 for quickly positioning the pipe reducing mold 401, and the bottom surface of the pipe reducing mold 401 is provided with a positioning groove for being sleeved on the positioning block 1032;

as a further improvement of the present invention, the outer diameter D1 of the upper positioning die 204 and the outer diameter D2 of the lower positioning die 301 are equal, the inner diameter D3 of the upper positioning round hole 205 and the inner diameter D4 of the lower positioning round hole 302 are equal, the inner diameter D4 of the lower positioning round hole 302 is greater than the inner diameter D5 of the pipe-contracting round hole 402, the inner diameter D5 of the pipe-contracting round hole 402 is equal to the inner diameter D6 of the bottom plate round hole 1031, and the diameter D7 of the oil pressure head 203 is smaller than the inner diameter D5 of the pipe-contracting round hole 402.

As a further improvement of the utility model, the internal diameter D1 of going up location round hole 205 with the size of the internal diameter D2 of location round hole 302 is 16.2mm down, the internal diameter D5 of reducing pipe round hole 402 with the internal diameter D6 of bottom plate round hole 1031 is 15.5mm, the radius R1 of reducing pipe circular arc 403 is 0.3 mm.

The utility model provides an embodiment:

the outer sleeve of the PTC heating tube is usually an aluminum tube or a stainless steel metal round tube, the size of the commonly used metal round tube is DN15, the corresponding outer diameter is 15.9mm, the wall thickness of the tube is 0.8mm, in order to facilitate the vertical insertion of the metal round tube into the lower positioning mold 301, the inner diameter D2 of the lower positioning round hole 302 is 16.2mm, in order to reduce the scratches or the defects caused by the friction force on the surface of the metal round tube in the tube shrinking process, related personnel vertically place the assembled PTC heating tube after coating lubricating oil on the surface into the lower positioning mold 301, in order to avoid the damage of the lead of the PTC heating tube in the tube shrinking process, the lead of the PTC heating tube passes through the lower positioning round hole to extend downwards, the operator manually lifts the upper positioning mold 204 upwards, after the metal round tube is vertically placed, the upper positioning mold 204 descends under the action of gravity, the pipe sleeve is sleeved outside the PTC heating pipe, and the upper end and the lower end of the metal round pipe are simultaneously positioned, so that the metal round pipe is prevented from inclining in the pipe reducing process, and the finished product rate of metal pipe processing is improved. After the placement of the PTC heating tube to be processed is completed, the power switch is turned on by the relevant operator, the piston of the oil pressure device 201 drives the metal pressure rod 202 to push downward, the oil pressure head 203 pushes the metal tube to move vertically downward after contacting the metal tube, in order to reduce the diameter of the outer tube of the PTC heating tube, the diameter of the pipe reducing circular hole 402 is gradually reduced from top to bottom, the diameter D5 of the pipe reducing circular hole 402 is 15.5mm, when the side wall of the metal circular tube of the PTC heating tube contacts the pipe reducing circular hole 403 at the center of the pipe reducing mold 401, the side wall of the metal circular tube receives the pressure pointing to the center of the circle given by the pipe reducing circular hole 403 at the same time, the side wall of the metal circular tube contracts to the center of the circle at the same time, when the upper positioning mold 204 contacts the lower positioning mold 301, the downward movement stops, wherein the oil pressure head 203 continues to push downward under the push of the metal pressure, dropping into a buffer device at the bottom of the equipment to finish the pipe reducing operation.

When the outer diameter of the PTC heating pipe to be processed changes, the pipe reducing die 401 and the lower positioning die 301 can be rapidly disassembled and replaced, the positioning block 1032 arranged on the rack bottom plate 103 can be matched with the pipe reducing die 401 with different pipe reducing hole diameters, the purpose of rapidly and accurately replacing the pipe reducing die 401 is achieved, the oil pressure head 203 is in threaded connection with the metal pressing rod 202, and after the upper positioning die 204 is lifted by a related operator, the oil pressure head 203 can be unscrewed, and the oil pressure head 203 and the upper positioning die 204 with corresponding sizes are replaced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a metal pipe draw equipment which characterized in that includes: the device comprises a door-shaped frame (1) and an oil pressure device (201) fixed at the top of the door-shaped frame (1), wherein a metal pressure rod (202) is fixedly connected to a piston on the bottom surface of the oil pressure device (201), and an upper positioning die (204) used for keeping the vertical position of a metal round pipe is clamped at the bottom end of the metal pressure rod (202); the lower die component is arranged in the middle of the door-shaped frame (1) and comprises a pipe reducing die (401) for reducing a pipe and a lower positioning die (301) arranged on the pipe reducing die (401) and used for placing a metal round pipe.

2. The metal round pipe shrinking device according to claim 1, wherein: door type frame (1) both sides are equipped with two support columns (102), the top position of support column (102) is equipped with frame roof (101), oil pressure unit (201) are fixed the higher authority of frame roof (101), metal depression bar (202) pass the trompil downwardly extending who sets up in frame roof (101) central point and put, the middle part of support column (102) is equipped with frame bottom plate (103), the bed die subassembly sets up the higher authority of frame bottom plate (103), frame bottom plate (103) central point is equipped with bottom plate round hole (1031) that are used for passing the metal pipe that finishes processing, the lower extreme position of support column (102) is provided with two perpendicular to frame base (104) of support column (102).

3. The metal round pipe shrinking device according to claim 2, wherein: go up positioning die (204) and be hollow structure's cylinder, it is equipped with last location round hole (205) that are used for inserting the metal pipe to go up positioning die (204) bottom surface, metal depression bar (202) bottom is equipped with oil pressure head (203) that are used for advancing the metal pipe, oil pressure head (203) with metal depression bar (202) are fixed through threaded connection, the diameter of oil pressure head (203) is greater than the diameter of metal depression bar (202), metal depression bar (202) pass go up the opening of positioning die (204) top surface with oil pressure head (203) are connected, the inside top surface position of going up positioning die (204) is equipped with and is used for the suit in the recess of oil pressure head (203).

4. The metal round pipe shrinking device according to claim 3, wherein: the lower positioning die (301) is a cylinder, and a lower positioning round hole (302) capable of being vertically inserted into the metal round pipe is formed in the center of the lower positioning die (301).

5. The metal round pipe shrinking device according to claim 4, wherein: the pipe reducing die is characterized in that a pipe reducing circular hole (402) is formed in the center of the pipe reducing die (401), a connecting portion between the side surface of the pipe reducing circular hole (402) and the upper surface of the pipe reducing die (401) is a pipe reducing circular arc (403) enabling a circular pipe to be reduced uniformly, and the pipe reducing circular arc (403) is of a quarter circular arc structure.

6. The metal round pipe shrinking device according to claim 2, wherein: the pipe reducing die is characterized in that the pipe reducing die (401) and the rack bottom plate (103) are designed to be separable, a positioning block (1032) used for quickly positioning the pipe reducing die (401) is arranged on the upper surface of the rack bottom plate (103), and a positioning groove used for being sleeved on the positioning block (1032) is arranged on the bottom surface of the pipe reducing die (401).

7. The metal round pipe shrinking device according to claim 5, wherein: the outer diameter D1 of the upper positioning die (204) is equal to the outer diameter D2 of the lower positioning die (301), the inner diameter D3 of the upper positioning round hole (205) is equal to the inner diameter D4 of the lower positioning round hole (302), the inner diameter D4 of the lower positioning round hole (302) is larger than the inner diameter D5 of the pipe reducing round hole (402), the inner diameter D5 of the pipe reducing round hole (402) is equal to the inner diameter D6 of the bottom plate round hole (1031), and the diameter D7 of the oil pressure head (203) is smaller than the inner diameter D5 of the pipe reducing round hole (402).

8. The metal round pipe shrinking device according to claim 7, wherein: the inner diameter D1 of the upper positioning round hole (205) and the inner diameter D2 of the lower positioning round hole (302) are both 16.2mm in size, the inner diameter D5 of the pipe contracting round hole (402) and the inner diameter D6 of the bottom plate round hole (1031) are both 15.5mm in size, and the radius R1 of the pipe contracting arc (403) is 0.3 mm.