Pipe end necking and diameter-shaping composite die for thin-wall pipe fitting

Abstract

The utility model discloses a composite die for necking and diameter shaping of the pipe end of a thin-wall pipe fitting, which comprises a base, a sliding column is arranged in the middle of the top of the base, a supporting disc is sleeved on the upper portion of the outer ring of the sliding column, an air cylinder is fixedly installed on the top of the sliding column, and a plurality of lower die pipes are evenly arranged on the outer ring of the top of the base. A plurality of upper die pipes are evenly arranged at the bottom of the supporting disc, a supporting pad is arranged at the bottom of the base and is in a hollow state, and a plurality of damping parts are evenly arranged in an inner cavity of the supporting pad. A plurality of pipe fittings can be placed in the die at the same time, so that pipe end necking can be carried out on the plurality of thin-wall pipe fittings at the same time, the machining efficiency can be effectively improved, convenience is provided for daily production, and when the pipe end necking is carried out on the pipe fittings and the supporting pad is extruded or stretched by vibration force, nitrogen, the damping rod and the supporting pad all have a damping effect; and the vibration force can be absorbed and converted into self heat, so that the vibration force can be effectively reduced, and noise pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipe fitting processing technical field, concretely is a kind of thin-walled pipe fitting pipe end necking whole diameter composite mould. BACKGROUND

[0002] Thin-walled pipe fitting refers to the pipe of metal material with wall thickness below 1mm, with the characteristics of light weight, material saving, compact structure etc., so it has been widely used in the field of aerospace, industry, chemical industry and household products etc.. Thin-walled pipe fitting generally needs to be necked at pipe end in the processing process, and the main purpose of pipe end necking is to reduce the diameter of the mouth of pipe fitting to meet the specific connection or assembly requirements.

[0003] The existing thin-walled pipe fitting pipe end necking mould can only process one pipe fitting at a time, cannot meet the daily production requirements, and has poor damping effect, and the equipment generally produces large vibration when necking at pipe end, which causes noise pollution to the surrounding environment. Therefore, the utility model provides a kind of thin-walled pipe fitting pipe end necking whole diameter composite mould to solve the above problems. UTILITY MODEL CONTENTS

[0004] (I) technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a kind of thin-walled pipe fitting pipe end necking whole diameter composite mould, solves the problem that the existing thin-walled pipe fitting pipe end necking mould can only process one pipe fitting at a time and has poor damping effect.

[0006] (II) technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a kind of thin-walled pipe fitting pipe end necking whole diameter composite mould, including base, the top middle of base is provided with slide column, the outer circle of slide column upper portion is equipped with support disc, the top of slide column is fixedly installed with pneumatic cylinder, the outer circle of base top is evenly provided with multiple lower mould pipes, the bottom of support disc is evenly provided with multiple upper mould pipes, the bottom of base is provided with support pad, the support pad is hollow state, the inner chamber of support pad is evenly provided with multiple damping parts.

[0008] Preferably, the top of slide column is provided with slot, the outer circle of slide column is evenly provided with multiple sliding grooves, the inner chamber of sliding groove is communicated with the inner chamber of slot.

[0009] Preferably, the output shaft of pneumatic cylinder is inserted into the inner chamber of slot, and the lower part of the outer circle of pneumatic cylinder output shaft is evenly provided with multiple connecting rods.

[0010] Preferably, the top of the lower mold tube is opposite to the bottom of the upper mold tube, the inner diameter of the lower mold tube is larger than that of the upper mold tube, and the lower mold tube corresponds to the upper mold tube one by one.

[0011] Preferably, the damping member comprises a damping rod, the top of the damping rod is fixedly connected with the top of the inner wall of the supporting pad, the bottom of the damping rod is fixedly connected with the bottom of the inner wall of the supporting pad, and the outer ring of the damping rod is sleeved with a spring.

[0012] Preferably, the connecting rod is in an L shape, the side of the connecting rod away from the output shaft of the air cylinder penetrates through the inner cavity of the sliding groove, and the bottom of the connecting rod is fixedly connected with the top of the supporting disc.

[0013] Preferably, the top of the spring is tightly attached to the top of the inner wall of the supporting pad, and the bottom of the spring is tightly attached to the bottom of the inner wall of the supporting pad.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. When the pipe end is necked, the output shaft of the air cylinder moves downward, the supporting disc is driven to slide downward through the connecting rod, and the upper mold tube is driven to move downward, so that the top of the thin-walled pipe is extruded downward, the inner diameter is reduced, the wall thickness is increased, and the length is increased, so that the pipe end is necked, a plurality of pipe fittings can be placed in the mold at the same time, so that the pipe end of a plurality of thin-walled pipe fittings can be necked at the same time, the processing efficiency can be effectively improved, and the daily production is facilitated.

[0017] 2. When the pipe end of the thin-walled pipe is necked, a large vibration will be generated, the damping rod and the supporting pad of the mold are made of rubber material, and the supporting pad is filled with nitrogen, when the supporting pad is extruded or stretched by the vibration force, the nitrogen, the damping rod and the supporting pad all have damping effect, can absorb the vibration force and convert it into heat, and can effectively reduce the vibration degree, so as to avoid noise pollution. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the base and the upper part of the utility model;

[0020] Figure 3 It is a structure schematic view of the sliding column and the upper part of the utility model;

[0021] Figure 4 It is a structure schematic view of the supporting pad and the internal part of the utility model;

[0022] Figure 5 It is a whole structure schematic view of the utility modelFigure 3 enlarged view of A in FIG.

[0023] Figure 6 The utility model discloses Figure 4 enlarged view of B in FIG.

[0024] In the drawings, the component list represented by each sign is as follows:

[0025] 1, base; 2, slide column; 21, insertion slot; 22, sliding groove; 3, support disc; 4, air cylinder; 5, lower die pipe; 6, upper die pipe; 7, support pad; 8, damping member; 81, damping rod; 82, spring; 9, connecting rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] As Figures 1-6 shown, the utility model provides a kind of technical scheme: a kind of thin-walled pipe fitting pipe end necking whole diameter composite die, including base 1, the top middle of base 1 is provided with slide column 2, the upper portion of the outer ring of slide column 2 is equipped with support disc 3, the top of slide column 2 is fixedly installed with air cylinder 4, the outer ring of base 1 top is uniformly provided with multiple lower die pipes 5, the bottom of support disc 3 is uniformly provided with multiple upper die pipes 6, the bottom of base 1 is provided with support pad 7, support pad 7 is hollow state, the inner chamber of support pad 7 is uniformly provided with multiple damping members 8.

[0028] Wherein, the top of lower die pipe 5 is opposite the bottom of upper die pipe 6, the inner diameter of lower die pipe 5 is greater than the inner diameter of upper die pipe 6, lower die pipe 5 and upper die pipe 6 correspond one by one, when processing, can be placed in lower die pipe 5 in thin-walled pipe fitting, multiple pipe fittings can be placed in this die simultaneously and be processed.

[0029] Further, the top of slide column 2 is provided with insertion slot 21, the outer ring of slide column 2 is uniformly provided with multiple sliding grooves 22, the inner chamber of sliding groove 22 is communicated with the inner chamber of insertion slot 21.

[0030] Further, the output shaft of air cylinder 4 is inserted into the inner chamber of insertion slot 21, the lower portion of the outer ring of air cylinder 4 output shaft is uniformly provided with multiple connecting rods 9, connecting rod 9 is "L" shape, the side of connecting rod 9 away from the output shaft of air cylinder 4 penetrates the inner chamber of sliding groove 22, and the bottom of connecting rod 9 is fixedly connected with the top of support disc 3.

[0031] In specific use, when the pipe end of the pipe is necked, the suction switch of the air cylinder 4 is opened, the output shaft moves downward in the insertion slot 2, the connecting rod 9 slides downward in the sliding slot 22, the supporting disc 3 slides downward on the sliding column 2, and the upper die pipe 6 moves downward, then the upper die pipe 6 can extrude the top of the thin-walled pipe to reduce the inner diameter, increase the wall thickness and length, and complete the necking of the pipe end, the die can neck the pipe end of multiple thin-walled pipes at the same time, and the processing efficiency is effectively improved to provide convenience for daily production.

[0032] The damping member 8 comprises a damping rod 81, the top of the damping rod 81 is fixedly connected with the top of the inner wall of the supporting pad 7, the bottom of the damping rod 81 is fixedly connected with the bottom of the inner wall of the supporting pad 7, and the outer ring of the damping rod 81 is sleeved with a spring 82.

[0033] Further, the top of the spring 82 is tightly attached to the top of the inner wall of the supporting pad 7, and the bottom of the spring 82 is tightly attached to the bottom of the inner wall of the supporting pad 7.

[0034] In specific use, when the pipe end of the pipe is necked, the pipe end will certainly generate a large vibration, the damping rod 81 and the supporting pad 7 of the die are made of rubber material, and the supporting pad 7 is filled with nitrogen, when the supporting pad 7 is extruded or stretched by the vibration force, the nitrogen, the damping rod 81 and the supporting pad 7 all have a damping effect, can absorb the vibration force and convert it into heat, can effectively reduce the vibration degree, and avoid noise pollution, in the vibration process, the spring is elastically deformed due to extrusion or stretching, when the vibration disappears, the spring can restore to the original state and make the damping rod 81 restore to the original state, and make the supporting pad 7 restore to the original state.

[0035] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Additionally, unless otherwise specified, terms such as "first" and "second" are used herein merely to identify one of the elements as distinct from another without necessarily requiring or implying any actual such relationship or order.

[0036] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A composite die for shrinking and straightening the diameter of thin-walled pipe ends, comprising a base (1), characterized in that: A slide column (2) is provided in the middle of the top of the base (1), a support plate (3) is provided on the upper part of the outer ring of the slide column (2), a cylinder (4) is fixedly installed on the top of the slide column (2), a plurality of lower mold tubes (5) are evenly provided on the outer ring of the top of the base (1), a plurality of upper mold tubes (6) are evenly provided on the bottom of the support plate (3), a support pad (7) is provided at the bottom of the base (1), the support pad (7) is in a hollow state, and a plurality of shock-absorbing parts (8) are evenly provided in the inner cavity of the support pad (7).

2. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 1, characterized in that: A slot (21) is provided on the top of the slide column (2), and a plurality of slide grooves (22) are evenly provided on the outer ring of the slide column (2), wherein the inner cavity of the slide groove (22) is communicated with the inner cavity of the slot (21).

3. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 2, characterized in that: The output shaft of the cylinder (4) is inserted into the inner cavity of the slot (21), and a plurality of connecting rods (9) are evenly arranged on the lower part of the outer ring of the output shaft of the cylinder (4).

4. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 1, characterized in that: The top of the lower mold tube (5) faces the bottom of the upper mold tube (6), the inner diameter of the lower mold tube (5) is larger than the inner diameter of the upper mold tube (6), and the lower mold tube (5) corresponds to the upper mold tube (6) one by one.

5. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 1, characterized in that: The shock absorbing member (8) comprises a shock absorbing rod (81), the top of the shock absorbing rod (81) is fixedly connected to the top of the inner wall of the support pad (7), the bottom of the shock absorbing rod (81) is fixedly connected to the bottom of the inner wall of the support pad (7), and the outer ring of the shock absorbing rod (81) is provided with a spring (82).

6. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 3, characterized in that: The connecting rod (9) is L-shaped, and the side of the connecting rod (9) away from the output shaft of the cylinder (4) passes through the inner cavity of the slide groove (22), and the bottom of the connecting rod (9) is fixedly connected to the top of the support plate (3).

7. The composite die for shrinking and straightening the diameter of thin-walled pipe ends according to claim 5, characterized in that: The top of the spring (82) is tightly fitted with the top of the inner wall of the support pad (7), and the bottom of the spring (82) is tightly fitted with the bottom of the inner wall of the support pad (7).

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