CN116749545A - Rubber tube buckling device and buckling process - Google Patents
Rubber tube buckling device and buckling process Download PDFInfo
- Publication number
- CN116749545A CN116749545A CN202311047949.2A CN202311047949A CN116749545A CN 116749545 A CN116749545 A CN 116749545A CN 202311047949 A CN202311047949 A CN 202311047949A CN 116749545 A CN116749545 A CN 116749545A
- Authority
- CN
- China
- Prior art keywords
- buckling
- clamping
- clamping block
- groove
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000002788 crimping Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000002783 friction material Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/92—Lubricating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention discloses a rubber pipe buckling device and a buckling process, wherein the rubber pipe buckling device comprises a workbench, an operating box arranged on a workbench surface of the workbench, and a buckling assembly positioned at one side of the operating box, the buckling assembly comprises a plurality of dies, one or more dies are provided with a locating cone with a first conical surface on a buckling surface which is contacted with a joint, and the locating cone is used for buckling a locating groove with a second conical surface on an aluminum sleeve; the rubber tube withholding device also comprises a clamping assembly which is coaxially arranged with the withholding assembly. When the rubber pipe buckling device buckles the joint again, the stress position and the stress angle of buckling pressure applied by the die on the aluminum sleeve of the joint are the same as those of the previous buckling through the locating cone and the clamping assembly arranged on the buckling surface of the die, so that the sealing strength of the connecting pipe can be improved by buckling again, and the service lives of the joint and the pipeline are prolonged.
Description
Technical Field
The invention relates to the technical field of pipeline connection, in particular to a rubber pipe buckling device and a rubber pipe buckling process.
Background
The rubber tube has the advantages of light weight, easy flexing, adaptability to vibration environment and the like, and is widely applied to the fields of automobile air conditioner refrigerant pipelines and the like. Automotive air conditioning hoses typically employ steel wire reinforced synthetic hoses. The common automobile air conditioner refrigerant pipeline joint is an aluminum sleeve connection type rubber pipe joint, an aluminum pipe and a rubber pipe are connected by adopting an aluminum sleeve, the aluminum pipe and the rubber pipe are inserted into the aluminum sleeve, and then the aluminum sleeve is buckled and pressed by a buckling and pressing device, so that the purposes of connecting and sealing the aluminum pipe and the rubber pipe are achieved.
The standard of the rubber tube for the automobile air conditioner is to meet the sealing requirement under certain pressure, and the rubber tube inner rubber and the steel wire are not damaged. However, to meet the sealing requirement under certain pressure, the buckling strength is large; the buckling strength is small in order to avoid damaging the inner glue or the steel wire.
The automobile air conditioner pipeline has the following characteristics: during the refrigerating cycle of the refrigerant, the refrigerant at the outlet of the compressor is in a high-temperature and high-pressure state; in addition, the refrigerant lines at the compressor outlet are subject to substantial variations in temperature and pressure during operation and shutdown; in addition, the refrigerant lines operate in a vibratory environment. For the above reasons, when receiving a new withholding task, it is difficult for constructors to accurately calculate the withholding size according to experience, after withholding is completed once, the withholding is required to be performed again if the tightness does not reach the standard after the pressure resistance test in the high temperature environment. When withholding again, because the atress position and the angle of aluminium cover probably change, lead to withholding again and can not improve the leakproofness of rubber tube joint, can make the leakproofness reduce even, life can reduce.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a rubber tube buckling device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a rubber pipe buckling device comprises a workbench, an operation box arranged on a workbench surface of the workbench, and a buckling component positioned on one side of the operation box;
the buckling component comprises a plurality of dies, and the dies are used for applying radial buckling pressure to the joint; the joint comprises an aluminum pipe and an aluminum sleeve;
one or more dies are provided with a positioning cone with a first conical surface on a buckling surface which is contacted with the joint, and the positioning cone is used for buckling a positioning groove with a second conical surface on the aluminum sleeve;
the rubber tube withholding device also comprises a clamping assembly which is coaxially arranged with the withholding assembly.
The clamping assembly comprises a first clamping block, a second clamping block, a spring, a connecting block, a supporting cylinder body, an upper supporting rod, a lower supporting rod and a base.
Be equipped with first fixture block and first draw-in groove on the first grip block, be equipped with second fixture block and second draw-in groove on the second grip block, first fixture block and first draw-in groove with second fixture block and second draw-in groove mutually support, make first grip block with second grip block interconnect for the centre gripping rubber tube.
The outer surface of the barrel body formed by the two clamping blocks which are connected with each other is uniformly connected with a plurality of springs along the circumferential direction, the other ends of the springs are connected with connecting blocks, and the connecting blocks are provided with sliding blocks. The sliding block is arranged in a sliding groove which is axially arranged on the inner wall of the supporting cylinder body.
Support barrel below fixedly connected with upper supporting rod, upper supporting rod below is provided with the lower support rod, constitute extending structure between upper supporting rod and the lower support rod, this extending structure can be adjusted clamping assembly's height.
The lower support rod is arranged on the working table surface through the base.
The sliding block and the sliding groove are provided with low friction materials on the surfaces which are contacted with each other, so that the clamping block can move in the axial direction with low friction. The low friction material arranged on the sliding contact surface between the sliding block and the sliding groove can allow the sliding block to slide more smoothly relative to the sliding groove, so that the motion resistance of the rubber tube held by the clamping assembly in the axial direction is smaller. Wherein the low friction material may be polytetrafluoroethylene.
In the clamping assembly, as the plurality of springs are arranged in the connection between the clamping block and the supporting cylinder body, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block can move along the axial direction, the radial direction and the circumferential direction with small amplitude and low resistance; because the slider and the chute are arranged in the connection between the clamping block and the supporting cylinder body, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block is further facilitated to move along the axial direction with low resistance.
Preferably, the number of the dies is 8, and the locating cone is arranged only on the die right above.
Preferably, the number of the springs is 4, and the springs are uniformly connected at the axial middle position of the clamping block.
The base is rotationally connected with the workbench; the upper surface of the workbench is provided with a storage groove for accommodating the clamping assembly, and a notch of the storage groove is provided with a door leaf capable of opening or closing the storage groove. When the clamping assembly works, the door leaf is used for supporting the base, and when the clamping assembly is contained in the containing groove, the upper surface of the door leaf forms a part of the working table surface.
Preferably, the rubber pipe buckling device is suitable for buckling an automobile air conditioner rubber pipe.
Preferably, the hose buckling device is suitable for buckling automobile air conditioner hoses with steel wire reinforced synthetic hoses.
The buckling process adopting the rubber pipe buckling device comprises the following steps:
s1, inserting an aluminum pipe and a rubber pipe into an aluminum sleeve, and buckling the aluminum sleeve by a rubber pipe buckling device according to a preset buckling size to enable the aluminum pipe and the rubber pipe to be in sealing connection;
s2, under a preset condition, testing the tightness of the connection of the aluminum pipe and the rubber pipe;
s3, if the test result shows that the tightness of the connection of the aluminum pipe and the rubber pipe is qualified, performing a step S13; if the test result shows that the tightness of the connection of the aluminum pipe and the rubber pipe is not qualified, S4 is carried out;
s4, reducing the buckling size to be the length X;
s5, opening the door leaf, taking the clamping assembly out of the storage groove and horizontally fixing the base of the clamping assembly;
s6, coating lubricating oil at the positioning groove of the aluminum sleeve, and coating lubricating oil at the positioning cone of the die;
s7, the rubber tube passes through the clamping assembly and the joint is placed in the buckling assembly;
s8, adjusting the position and the angle of the rubber tube to enable the positioning groove to be primarily aligned with the positioning cone, and simultaneously, the first clamping block and the second clamping block are mutually matched to clamp the rubber tube;
s9, adjusting the length of the telescopic structure to enable the axis of the rubber tube to be horizontal;
s10, moving the connecting block to enable the sliding block to slide in the sliding groove so as to further adjust the position of the rubber pipe and enable the positioning groove to be further aligned with the positioning cone;
s11, pressing a start button on the operation panel to buckle again;
s12, checking whether the inner rubber or the steel wire of the rubber tube is damaged, and if so, terminating the buckling process; if not, returning to the step S2.
And S13, the joint connection tightness is qualified, and buckling is completed.
In step S2, the predetermined conditions include a test temperature of 100+ -2deg.C.
In the step S4, the length X is 0.2% -1% of the outer diameter of the rubber tube.
The first conical surface of the positioning cone is provided with a first vertex, and the second conical surface of the positioning groove is provided with a second vertex. In steps S8 and S10, the positioning groove is initially aligned with the positioning cone position; in step S11, as the mold 31 is buckled in the radial direction, the aluminum sleeve is axially moved and circumferentially angularly adjusted before being subjected to buckling force under the interaction of the positioning groove and the positioning cone; when the positioning groove is completely overlapped with the positioning cone, the buckling surface of the aluminum sleeve begins to receive the buckling force of the die.
Meanwhile, the rubber tube is clamped in the clamping assembly, and as the clamping block is connected with the supporting cylinder body, a plurality of springs are arranged in the clamping block, when the rubber tube buckling device buckles the joint again, the rubber tube clamped by the clamping block can move along the axial direction, the radial direction and the circumferential direction with small amplitude and low resistance; because the slider and the chute are arranged in the connection between the clamping block and the supporting cylinder body, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block is further facilitated to move along the axial direction with low resistance.
The invention has the following beneficial effects:
when the rubber pipe buckling device buckles the joint again, the stress position and the stress angle of buckling pressure applied by the die on the aluminum sleeve of the die are the same as those of the previous buckling, the stress position and the angle of the aluminum sleeve are prevented from being changed when the rubber pipe buckling device buckles the joint for multiple times, further, the sealing strength of the connecting pipe is ensured to be improved by buckling the rubber pipe again, and the service life of the joint and the pipeline is prolonged.
Drawings
FIG. 1 is an isometric view of a prior art hose crimping device;
FIG. 2 is an isometric view of a hose crimping device provided by the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the hose clamp of FIG. 2, with the hose and fitting being clamped along line A-A;
FIG. 5 is an enlarged partial schematic view of FIG. 4 at C;
FIG. 6 is an enlarged partial schematic view at B in FIG. 3;
fig. 7 is a schematic cross-sectional view showing the change of the relative positional relationship between the positioning cone and the positioning groove in the re-crimping step of the crimping process.
In the figure: 1 workbench, 11 workbench surface, 12 door leaf, 13 storage groove, 2 operation box, 3 buckling and pressing component, 31 mould, 311 locating cone, 3111 first conical surface, first vertex 3112, 4 clamping component, 41 first clamping block, 411 first clamping block, 412 first clamping groove, 43 spring, 44 connecting block, 441 sliding block, 45 supporting cylinder, 451 sliding groove, 46 upper supporting rod, 47 lower supporting rod, 48 base, 5 rubber tube, 6 joint, 61 aluminum tube, 62 aluminum sleeve, 621 locating groove, 6211 second conical surface, 6212 second vertex.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 2-6, a withholding device comprises a workbench 1, an operation box 2 arranged on a workbench surface 11 of the workbench 1, and a withholding assembly 3 positioned on one side of the operation box 2;
the buckling component 3 comprises a plurality of dies 31, and the dies 31 are used for applying radial buckling pressure to the joint 6; the joint 6 comprises an aluminum tube 61 and an aluminum sleeve 62;
one or more of said dies 31 are provided with a positioning cone 311 having a first conical surface 3111 on its gripping surface in contact with the joint 6, said positioning cone 311 being intended to grip a positioning slot 621 having a second conical surface 6211 on the aluminium sleeve 62;
the rubber tube withholding device also comprises a clamping assembly 4 which is coaxially arranged with the withholding assembly 3.
Referring to fig. 6, the clamping assembly 4 includes a first clamping block 41, a second clamping block, a spring 43, a connecting block 44, a support cylinder 45, an upper support bar 46, a lower support bar 47, and a base 48.
The first clamping block 41 is provided with a first clamping block 411 and a first clamping groove 412, the second clamping block is provided with a second clamping block and a second clamping groove, and the first clamping block 411 and the first clamping groove 412 are mutually matched with the second clamping block and the second clamping groove, so that the first clamping block 41 and the second clamping block are mutually connected and are used for clamping the rubber tube 5.
The outer surface of the cylinder body formed by the two clamping blocks connected with each other is uniformly connected with a plurality of springs 43 along the circumferential direction, the other ends of the springs 43 are connected with connecting blocks 44, and the connecting blocks 44 are provided with sliding blocks 441. The sliding block 441 is disposed in the sliding groove 451 disposed along the axial direction and supporting the inner wall of the cylinder 45.
An upper supporting rod 46 is fixedly connected below the supporting cylinder 45, a lower supporting rod 47 is arranged below the upper supporting rod 46, and a telescopic structure is formed between the upper supporting rod 46 and the lower supporting rod 47, and the height of the clamping assembly 4 can be adjusted through the telescopic structure.
The lower support bar 47 is disposed on the table top 11 through a base 48.
The slider 441 and the slide groove 451 are provided with a low friction material at the surfaces thereof contacting each other, so that the clamp block can be moved in the axial direction with low friction. The low friction material provided at the sliding interface between the slider 441 and the runner 451 allows the slider 441 to slide more smoothly relative to the runner 451, thereby providing less resistance to movement of the hose 5 held by the clamping assembly 4 in the axial direction. Wherein the low friction material may be polytetrafluoroethylene.
In the clamping assembly 4, as the plurality of springs 43 are arranged in the connection between the clamping block and the supporting cylinder 45, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block can move along the axial direction, the radial direction and the circumferential direction with small amplitude and low resistance; because the connection between the clamping block and the supporting cylinder 45 is provided with the sliding block 441 and the sliding groove 451, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block is further facilitated to move along the axial direction with low resistance.
Preferably, the number of the molds 31 is 8, and the positioning cone 311 is provided only on the mold 31 directly above.
Preferably, the number of the springs 43 is 4, which are uniformly connected at the axial middle position of the clamping block.
Referring to fig. 5, the base 48 is rotatably connected to the table 1; the upper surface of the workbench 1 is provided with a storage groove 13 for accommodating the clamping assembly 4, and a notch of the storage groove 13 is provided with a door leaf 12 capable of opening or closing the storage groove 13. The door leaf 12 is used for supporting the base 48 when the clamping assembly 4 works, and the upper surface of the door leaf 12 forms a part of the working table 11 when the clamping assembly 4 is accommodated in the accommodating groove 13.
Preferably, the rubber pipe buckling device is suitable for buckling an automobile air conditioner rubber pipe.
Preferably, the hose buckling device is suitable for buckling automobile air conditioner hoses with steel wire reinforced synthetic hoses.
The buckling process adopting the rubber pipe buckling device comprises the following steps:
s1, inserting an aluminum pipe 61 and a rubber pipe 5 into an aluminum sleeve 62, and buckling the aluminum sleeve 62 by a rubber pipe buckling device according to a preset buckling size to enable the aluminum pipe 61 and the rubber pipe 5 to be in sealing connection;
s2, under a preset condition, pressure test is carried out on the tightness of the connection of the aluminum pipe 61 and the rubber pipe 5;
s3, if the test result shows that the tightness of the connection between the aluminum pipe 61 and the rubber pipe 5 is qualified, performing a step S13; if the test result shows that the tightness of the connection between the aluminum pipe 61 and the rubber pipe 5 is not qualified, S4 is carried out;
s4, reducing the buckling size to be the length X;
s5, opening the door leaf 12, taking the clamping assembly 4 out of the storage groove 13 and horizontally fixing the base 48 of the clamping assembly;
s6, coating lubricating oil on the positioning groove 621 of the aluminum sleeve 62, and coating lubricating oil on the positioning cone 311 of the die 31;
s7, the rubber tube 5 passes through the clamping assembly 4 and the joint 6 is placed in the buckling assembly 3;
s8, adjusting the position and the angle of the rubber tube 5 to enable the positioning groove 621 to be aligned with the positioning cone 311 preliminarily, and simultaneously, the first clamping block 41 and the second clamping block are matched with each other to clamp the rubber tube 5;
s9, adjusting the length of the telescopic structure to enable the axis of the rubber tube 5 to be horizontal;
s10, moving the connecting block 44 to enable the sliding block 441 to slide in the sliding groove 451 so as to further adjust the position of the rubber tube 5, and enabling the positioning groove 621 to be further aligned with the positioning cone 311;
s11, pressing a start button on the operation panel 21 to carry out buckling again;
s12, checking whether the inner rubber or the steel wire of the rubber tube 5 is damaged, and if so, terminating the buckling process; if not, returning to the step S2.
And S13, the joint connection tightness is qualified, and buckling is completed.
In step S2, the predetermined conditions include a test temperature of 100+ -2deg.C.
In the step S4, the length X is 0.2% -1% of the outer diameter of the rubber tube 5.
Referring to fig. 7, the first conical surface 3111 of the positioning cone 311 has a first apex 3112, and the second conical surface 6211 of the positioning slot 621 has a second apex 6212. In steps S8 and S10, the positioning slot 621 is initially aligned with the positioning cone 311, and the relative positional relationship is shown in fig. 7 a; in step S11, as the mold 31 is buckled in the radial direction, the aluminum sleeve 62 will perform axial movement and circumferential angle adjustment before being subjected to buckling force under the interaction of the positioning groove 621 and the positioning cone 311; as shown in fig. 7b, when the positioning groove 621 is completely coincident with the positioning cone 311, the pressing surface of the aluminum sleeve 62 begins to receive the pressing force of the mold 31.
Meanwhile, the rubber tube 5 is clamped in the clamping assembly 4, and as the plurality of springs 43 are arranged in the connection between the clamping block and the supporting cylinder 45, when the rubber tube buckling device buckles the joint again, the rubber tube clamped by the clamping block can move along the axial direction, the radial direction and the circumferential direction with small amplitude and low resistance; because the connection between the clamping block and the supporting cylinder 45 is provided with the sliding block 441 and the sliding groove 451, when the rubber pipe buckling device buckles the joint again, the rubber pipe clamped by the clamping block is further facilitated to move along the axial direction with low resistance.
When the rubber pipe buckling device buckles the joint 6 again, the locating cone 311 and the clamping assembly 4 are arranged on the buckling surface of the die 31, so that the stress position and the stress angle of the buckling force applied by the die 31 to the aluminum sleeve 62 of the joint 6 are the same as those of the previous buckling, the stress position and the angle of the aluminum sleeve 62 are prevented from being changed when the buckling is carried out for many times, further, the sealing strength of a connecting pipe can be improved, and the service life of the joint and a pipeline is prolonged.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The rubber pipe buckling device comprises a workbench (1), an operation box (2) arranged on a workbench surface (11) of the workbench (1), and a buckling component (3) positioned on one side of the operation box (2);
the buckling assembly (3) comprises a plurality of dies (31), and the dies (31) are used for applying radial buckling pressure to the joint (6); the joint (6) comprises an aluminum pipe (61) and an aluminum sleeve (62);
the method is characterized in that one or more dies (31) are provided with a positioning cone (311) with a first conical surface (3111) on a buckling surface which is contacted with a joint (6), and the positioning cone (311) is used for buckling a positioning groove (621) with a second conical surface (6211) on an aluminum sleeve (62);
the rubber tube withholding device further comprises a clamping assembly (4) which is coaxially arranged with the withholding assembly (3).
2. A hose crimping device according to claim 1, wherein the clamping assembly (4) comprises a first clamping block (41), a second clamping block, a spring (43), a connecting block (44), a support cylinder (45), an upper support bar (46), a lower support bar (47) and a base (48);
the first clamping block (41) is provided with a first clamping block (411) and a first clamping groove (412), the second clamping block is provided with a second clamping block and a second clamping groove, and the first clamping block (411) and the first clamping groove (412) are mutually matched with the second clamping block and the second clamping groove, so that the first clamping block (41) and the second clamping block are mutually connected and are used for clamping a rubber pipe (5);
the outer surface of the cylinder body formed by the two mutually connected clamping blocks is uniformly connected with a plurality of springs (43) along the circumferential direction, the other ends of the springs (43) are connected with connecting blocks (44), and the connecting blocks (44) are provided with sliding blocks (441); the sliding block (441) is arranged in a sliding groove (451) which is arranged along the axial direction and supports the inner wall of the cylinder body (45);
an upper supporting rod (46) is fixedly connected below the supporting cylinder body (45), a lower supporting rod (47) is arranged below the upper supporting rod (46), and a telescopic structure is formed between the upper supporting rod (46) and the lower supporting rod (47);
the lower support rod (47) is arranged on the workbench surface (11) through a base (48);
the slider (441) and the chute (451) are each provided with a low friction material at their surfaces that contact each other.
3. A hose crimping device as claimed in claim 2, wherein the number of moulds (31) is 8, and wherein locating cones (311) are provided only on the mould (31) immediately above.
4. A hose crimping device according to claim 3, wherein said springs (43) are 4 and are uniformly connected at axially intermediate positions of said gripping blocks.
5. A hose crimping device as claimed in claim 4, wherein the base (48) is in rotational connection with the table (1); the upper surface of the workbench (1) is provided with a storage groove (13) for accommodating the clamping assembly (4), and a notch of the storage groove (13) is provided with a door leaf (12) capable of opening or closing the storage groove (13).
6. A crimping process using the hose crimping device as claimed in any one of claims 1 to 5, comprising the steps of:
s1, inserting an aluminum pipe (61) and a rubber pipe (5) into an aluminum sleeve (62), and buckling the aluminum sleeve (62) by a rubber pipe buckling device according to a preset buckling size to enable the aluminum pipe (61) and the rubber pipe (5) to be in sealing connection;
s2, under a preset condition, testing the tightness of the connection of the aluminum pipe (61) and the rubber pipe (5);
s3, if the test result shows that the tightness of the connection between the aluminum pipe (61) and the rubber pipe (5) is qualified, performing a step S13; if the test result shows that the tightness of the connection between the aluminum pipe (61) and the rubber pipe (5) is not qualified, S4 is carried out;
s4, reducing the buckling size to be the length X;
s5, opening the door leaf (12), taking out the clamping assembly (4) from the storage groove (13) and horizontally fixing the base (48) of the clamping assembly;
s6, coating lubricating oil on the positioning groove (621) of the aluminum sleeve (62), and coating lubricating oil on the positioning cone (311) of the die (31);
s7, the rubber tube (5) passes through the clamping assembly (4) and the joint (6) is placed in the buckling assembly (3);
s8, adjusting the position and the angle of the rubber tube (5) to enable the positioning groove (621) to be aligned with the positioning cone (311) in a preliminary mode, and meanwhile, the first clamping block (41) and the second clamping block are matched with each other to clamp the rubber tube (5);
s9, adjusting the length of the telescopic structure to enable the axis of the rubber tube (5) to be horizontal;
s10, moving the connecting block (44) to enable the sliding block (441) to slide in the sliding groove (451) so as to further adjust the position of the rubber tube (5) and enable the positioning groove (621) to be further aligned with the positioning cone (311);
s11, pressing a start button on the operation panel (21) to carry out buckling again;
s12, checking whether the inner rubber or the steel wire of the rubber tube (5) is damaged, and if so, terminating the buckling process; if not, returning to the step S2;
and S13, the joint connection tightness is qualified, and buckling is completed.
7. The crimping process of claim 6, wherein in step S2, the predetermined condition includes a check temperature of 100±2 ℃.
8. The crimping process as claimed in claim 7, wherein in step S4, the length X is 0.2% -1% of the external diameter of the hose (5).
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| CN202311047949.2A CN116749545B (en) | 2023-08-21 | 2023-08-21 | Rubber tube buckling device and buckling process |
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| CN202311047949.2A CN116749545B (en) | 2023-08-21 | 2023-08-21 | Rubber tube buckling device and buckling process |
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| Publication number | Publication date |
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| CN116749545B (en) | 2023-11-03 |
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