CN117549546B - Improved generation PVC heat shrinkage bush evenly expands mould - Google Patents
Improved generation PVC heat shrinkage bush evenly expands mould Download PDFInfo
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- CN117549546B CN117549546B CN202410028990.3A CN202410028990A CN117549546B CN 117549546 B CN117549546 B CN 117549546B CN 202410028990 A CN202410028990 A CN 202410028990A CN 117549546 B CN117549546 B CN 117549546B
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 185
- 238000001816 cooling Methods 0.000 claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 119
- 238000013461 design Methods 0.000 description 65
- 230000032258 transport Effects 0.000 description 28
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 22
- 230000009286 beneficial effect Effects 0.000 description 16
- 238000009826 distribution Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 238000009827 uniform distribution Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000237509 Patinopecten sp. Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
- B29C55/24—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes radial
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- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to the technical field of expansion dies, in particular to an improved uniform expansion die for a PVC heat-shrinkable sleeve, which comprises a die nozzle and a heating chamber, wherein the heating chamber is arranged in the coaxial center of the die nozzle, a heating hole is arranged on the side surface of the heating chamber, the die also comprises a vacuum chamber and a cooling chamber, the lower end of a conveying pipe is communicated to an L-shaped through hole on the side surface of an adsorption cylinder through an adjusting pipe, the L-shaped through holes are symmetrically distributed, the inferior arc grooves on the adsorption cylinder are centered and forked, the inferior arc grooves in the centering and forking drive the heat-shrinkable pipe to expand to the periphery, and simultaneously, the adsorption holes of two rows of transmission holes communicated by the inferior arc grooves are centered and forked again; the cooling chamber is used for adsorbing the heat shrinkage tube through the adsorption holes on the adsorption cylinder and simultaneously enabling liquid in the cooling tube to flow onto the spirally arranged blades at the rear end of the cooling tube.
Description
Technical Field
The invention relates to the technical field of expansion dies, in particular to an improved uniform expansion die for a PVC heat-shrinkable sleeve.
Background
The PVC heat-shrinkable tube is a common insulating and protecting material and is widely applied to the fields of cable insulation, wire identification, cable connection, waterproof envelope and the like. The preparation of PVC heat shrink tubing requires the use of expansion dies to ensure that the size, shape and properties of the final product meet the requirements.
In PVC heat shrink tube expansion molds, it is often necessary to use vacuum to draw the heat shrink tube to adjust its size and shape. However, a problem often arises when using an expansion die: since the suction force is larger at a position close to the vacuum hole and smaller at a position far from the vacuum hole, this results in uneven suction force distribution. This uneven distribution makes the thickness of the heat shrink tube inconsistent in different areas, thereby affecting the overall quality of the product. In some areas, the heat shrinkage is poor, while in other areas the vacuum is too unevenly distributed, which may also lead to differences in surface smoothness, or in some areas to bubbles, wrinkles or uneven appearance. These problems can significantly affect the appearance quality of the product. The difference in heat shrinkage properties in the different regions also results in inconsistent mechanical properties of the product during use, thereby affecting its function and durability.
And unstable vacuum can lead to stretching process uncontrolled in the expansion mould, and then influences the final size of PVC pyrocondensation pipe, if tensile inhomogeneous or excessive, the product can't accord with prescribed size standard, and too high or too low adsorption force still causes the damage to PVC material, and too high adsorption force can lead to the material to tear, and too low adsorption force can lead to the material to stretch inadequately to influence its performance, unstable vacuum leads to production line shut down or production efficiency reduction, because more time is spent adjusting and correcting the problem.
In view of the above, in order to overcome the technical problems, the invention designs an improved uniform expansion die for a PVC heat-shrinkable sleeve, which solves the technical problems.
Disclosure of Invention
The technical purpose to be achieved by the invention is as follows: the invention solves the problems of bubbles, wrinkles or uneven appearance on the surface of the heat-shrinkable tube caused by uneven vacuum distribution in the expansion process of the heat-shrinkable tube, and ensures that the same suction force is applied to the heat-shrinkable tube by the adsorption holes on the adsorption tube through introducing the transport tube and the connecting tube.
In order to achieve the technical purpose, the invention provides the following technical scheme:
the invention provides an improved PVC heat-shrinkable sleeve uniform expansion die, which comprises a die nozzle, a heating chamber, a vacuum chamber, a cooling chamber, a conveying pipe, a cooling chamber and a fixing cylinder, wherein the coaxial center of the die nozzle is provided with the heating chamber, the side surface of the heating chamber is provided with the heating hole, the conveying pipe in the vacuum chamber is communicated with an L-shaped through hole on the side surface of an adsorption cylinder through the lower end of a regulating pipe, the L-shaped through holes are symmetrically distributed, the conveying pipe is communicated with the adsorption cylinder through centering and bifurcation of a minor arc groove on the adsorption cylinder, the first time of shunting is carried out through a sector groove on the adsorption cylinder, simultaneously, the two rows of adsorption holes of the conveying holes communicated with the minor arc groove are centered and bifurcated again, the shunted gas is secondarily shunted through the two rows of adsorption holes of the conveying holes, the centering and bifurcation minor arc groove drives the heat-shrinkable pipe to expand all around, the cooling chamber is used for dispersing heat of the heat-shrinkable pipe through the liquid flow inside the cooling pipe when the adsorption hole on the adsorption cylinder adsorbs the heat-shrinkable pipe, and the liquid flow inside the heat-shrinkable pipe drives the fixing cylinder to rotate, and the fixing cylinder is used for dispersing the liquid on the heat shrink pipe.
By introducing the vacuum chamber and the cooling chamber, the uniform expansion of the heat shrinkage tube is realized. The vacuum chamber makes the pyrocondensation pipe expand through adsorbing inside air, and the cooling chamber then adsorbs the pyrocondensation pipe through the adsorption tube and hugs closely, has further ensured the even expansion of pyrocondensation pipe. The design of cooling chamber makes the pyrocondensation pipe can be closely adsorbed and rapidly cooled down when expanding, helps fixed pyrocondensation pipe's shape, improves production efficiency. Through the adsorption of the vacuum chamber to the internal air, the accurate control of the expansion process of the heat shrinkage tube is realized, and the uniformity and stability of the heat shrinkage tube in the expansion process are ensured. The water inlet cylinder is used for fixing the heat shrinkage tube in a molding way, so that the shape of the heat shrinkage tube after being unfolded is maintained, and the stability and reliability of the product are enhanced.
The vacuum chamber comprises a sealing cylinder, vacuum pipes, transport pipes, adsorption cylinders, connecting cylinders and a front template, wherein the sealing cylinder is arranged at the rear end of the heating chamber, two vacuum pipes are arranged on the sealing cylinder, the transport pipes are arranged at the lower ends of the vacuum pipes, the tail ends of the transport pipes are spaced by 90 degrees on the same circular ring, the transport pipes are vortex-shaped, an elbow is arranged at the lower end of the transport pipe, an adjusting pipe is arranged at the other end of the elbow, the cross section of the adjusting pipe is S-shaped, the tail ends of the adjusting pipes are arranged on the same circular ring, the adsorption cylinders are arranged at the coaxial centers of the sealing cylinders, the connecting cylinders are arranged at the left ends of the adsorption cylinders, so that the suction force of the adsorption holes from left to right is gradually reduced, the front ends can expand the heat-shrinkable pipes by larger suction force, the heat-shrinkable pipes are prevented from being continuously expanded, and the heat-shrinkable pipes are deformed, the foaming and the like.
The vortex shape and specific arrangement of the transport pipes helps to reduce pressure losses inside the system during transport and to improve gas flow efficiency. The design of the regulating cylinder and the adsorption cylinder helps to better control the gas flow and pressure inside the mold, thereby improving the stability and performance of the mold. The swirl shape of the transport tubes and their spacing on the same ring helps to achieve uniform gas flow through the adsorption holes throughout the adsorption process. Ensuring uniform gas transfer in all directions and avoiding problems that may be caused by uneven flow. The swirl shape also helps to reduce the resistance of the gas in the pipe, thereby reducing pressure losses. This can improve the gas transport efficiency in the vacuum chamber and reduce the energy consumption. Due to the vortex-like shape, the fluid flows more easily inside the pipe, reducing the formation of dead corners and accumulation areas, helping to prevent gas accumulation. This improves the uniformity and stability of the adsorption cylinder in adsorbing the heat shrink tube, and avoids the difference in surface smoothness caused by uneven vacuum distribution, or the appearance of bubbles, wrinkles or non-uniformity in certain areas. The distance between the tail ends of the conveying pipes and the adsorption cylinder is equal by 90 degrees on the same group of circular rings, and the conveying pipes can apply the same suction force to the positions of the adsorption holes in the subsequent adsorption process. The S-shaped cross section of the regulator tube has superior fluid control properties and allows for more accurate regulation of gas flow. This helps to ensure that the gas is uniformly and stably adsorbed on the L-shaped through holes of the adsorption cylinder, and the S-shaped regulating tube keeps the flow channels consistent among different pipelines, so that equal suction force to the adsorption holes of the heat shrinkage tube is realized. When the L-shaped through hole enables gas to circulate, the suction force is gradually reduced from the direction from the connecting cylinder to the adsorption cylinder, so that the heat shrinkage pipe can be stably adsorbed on the inner wall of the adsorption cylinder, and the heat shrinkage pipe is uniformly expanded. The shape of the S-shaped cross-section helps to reduce the resistance of the gas in the conduit and to reduce the pressure loss. This helps to improve the transport efficiency of the gas system and reduce the energy consumption. The S-shaped cross-section allows for a more stable flow of gas in the conduit, reducing the occurrence of turbulence and unstable flows.
The adsorption cylinder is composed of four sector blocks, two adjacent sector blocks are provided with L-shaped through holes, one end of each L-shaped through hole corresponds to the adjusting tube, one side of each sector block, which is close to the connecting cylinder, is provided with a minor arc groove, two ends of each minor arc groove are communicated with transmission holes, two sides of each transmission hole are communicated with adsorption holes, and the adsorption holes are formed in the sector blocks.
The four segment design provides a more uniform adsorption performance for the cartridge during operation, as they provide more adsorption surface area, helping to uniformly distribute the adsorption force. The L-shaped through holes are beneficial to reducing resistance and improving the flow efficiency of gas in the adsorption cylinder. Simultaneously, it has guided the inside gaseous flow of governing pipe to corresponding with external hole and the hole on the connecting cylinder, prevented that the air can't realize circulating when circulating, lead to the adsorption cylinder unable to adsorb the pyrocondensation pipe, thereby can't realize the expansion to the pyrocondensation pipe. The minor arc grooves and the transfer holes provide more accurate adsorption control, enabling the performance of the adsorption cylinder to be adjusted when needed. The transmission holes are connected with the two ends of the minor arc groove, so that the flow of gas in the adsorption cylinder can be balanced, and the partial pressure unbalance and the gas accumulation are prevented. In addition, the gas is more uniformly distributed in the adsorption holes during circulation. Through the symmetrical design of axis, the adsorption holes are symmetrically arranged at two sides of the transmission hole, so that the uniform distribution of adsorption force in the adsorption cylinder is facilitated, the adsorption performance of each part is ensured to be similar, and the consistency and stability of the system are improved. This helps to keep the gas flow uniform throughout the cartridge, reducing localized pressure imbalance.
Four rows of adsorption holes are formed in the circumferential array of each sector block, and the intervals between the adsorption holes in the circumferential direction of each sector block are equal.
Four rows of equidistant adsorption holes are beneficial to realizing the uniform adsorption performance of the adsorption cylinder in the whole circumferential direction, ensure the uniform distribution of the adsorption force on the surface of the adsorption cylinder and improve the uniform adsorption effect on the heat shrinkage tube. The adsorption holes in the circumferential direction optimize the flow of gas in the adsorption cylinder, reduce the resistance, improve the circulation efficiency of the gas, and help to ensure that the adsorption cylinder can effectively adsorb and fix the heat shrinkage tube during operation. The equidistant arrangement and the axisymmetric design of the adsorption holes are beneficial to keeping the uniform distribution of the adsorption force in the adsorption cylinder, improving the stability and consistency of the system and ensuring the similar adsorption performance of all parts. Equidistant placement simplifies the manufacturing and assembly process and reduces the dependence on complex machining processes, thereby improving production efficiency and reducing manufacturing costs. Through inferior arc groove and transmission hole on the sector to and the design in absorption hole, can provide more accurate absorption control, make the performance that can adjust the absorption section of thick bamboo as required, in order to satisfy different application demands.
The connecting cylinder is close to one side of the sector block and is provided with an outer hole and an inner hole, the outer hole and the inner hole are communicated with two L-shaped through holes on the adsorption cylinder, the right side surface of the connecting cylinder is provided with four sector grooves, and the sector grooves are identical in size and correspondingly communicated with the minor arc grooves.
The outer hole and the inner hole are connected with the L-shaped through hole in an eccentric way, so that gas can not affect the gas in the outer hole and the inner hole during circulation, the gas in the outer hole and the inner hole can circulate more stably, and uneven adsorption between one row of adsorption holes of the circular ring caused by unstable flow is reduced. The outer aperture length is three times the inner aperture length can help to keep the gases stably separated during circulation, ensuring that the gases between the two do not interfere with each other. This helps to achieve independent gas flows in the different sections, increasing the flexibility and efficiency of the system. The design of the outer hole and the inner hole prevents the gas from interfering with each other in circulation and keeps the gas in the respective channels relatively independent. This helps to maintain stability and controllability of the system while increasing the surface area of the connecting barrel. The design of the outer hole and the inner hole can change the gas flow path, thereby being beneficial to optimizing the gas flow in the connecting cylinder, reducing the resistance and improving the gas transmission efficiency. The corresponding design of the fan-shaped groove and the minor arc groove can help to provide better butt joint between the connecting cylinder and the adsorption cylinder, and the firmness and the stability of connection are improved. This design ensures coordination between the connecting cartridge and the adsorption cartridge, helping to optimize the overall performance of the system.
The other end of the outer hole is communicated with a semi-circular groove, the cross section of the semi-circular groove is semi-circular, two ends of the semi-circular groove are connected with L-shaped grooves, and the other end of the L-shaped groove is communicated with the center of the fan-shaped groove.
The semi-annular groove, the L groove and the fan-shaped groove can improve the control performance on the gas flow, and are helpful for more accurately adjusting the flow and distribution of the gas in the connecting cylinder, so that the system performance is optimized. The outer holes connected with the semi-annular grooves, the L-shaped grooves and the fan-shaped grooves can increase the surface area of the connecting cylinder, are beneficial to improving the heat exchange efficiency, and can be more effective in the application needing heat exchange. The structural design of the semi-annular grooves, L-grooves and fan-shaped grooves helps to achieve temperature uniformity of the gas flow within the connecting cylinder, which is very beneficial for applications requiring control of the temperature distribution. More complex structural designs can increase the stability of the system, which is critical for systems that operate over long periods of time or under unstable environmental conditions. The combined design of different grooves can improve the adjustability of the system, so that the system is easier to adapt to the operation requirements under different conditions. The design flexibility is beneficial to realizing the optimal performance of the system under different working conditions, the applicability and the efficiency of the whole system are improved, and the L-shaped groove is connected to the fan-shaped groove to stably split the gas, so that the suction force of each adsorption hole to the heat shrinkage pipe is the same.
The other end of hole intercommunication has the semicircle groove, and the hole communicates to the center of semicircle groove, the cross sectional shape of semicircle groove is semi-circular, the both ends of semicircle groove are connected with the transportation groove, the cross sectional shape of transportation groove is L shape, the other end intercommunication of transportation groove is in the center of fan-shaped groove.
The structural design of the semicircular groove, the transportation groove and the fan-shaped groove can help to improve the control precision of the gas flow in the inner hole, so that the transmission and distribution of the gas are optimized. The L-shaped transportation groove can reduce the resistance of gas in the transportation groove, improve the flow efficiency of the gas, and is particularly suitable for the application requiring high-efficiency gas transmission. The structural design of the semicircular groove and the transportation groove can increase the surface area of the inner hole, is beneficial to improving the heat exchange performance of the system, and can be more effective especially in the application requiring heat exchange. The more complex structural design can improve the stability of the system, so that the system is more suitable for running under different conditions. The combined design of the different tanks can increase the versatility of the system, making it easier to adapt to different operating requirements and environmental conditions. The design flexibility is beneficial to realizing the optimal performance of the system under various working conditions, the applicability and the efficiency of the whole system are improved, and the transportation groove is connected to the fan-shaped groove to stably split the gas, so that the suction force of each adsorption hole to the heat shrinkage pipe is the same.
The cooling chamber comprises a separation cylinder, a water inlet cylinder, cooling pipes, a collection cylinder and a cooling cylinder, wherein the separation cylinder is arranged at the other end of the sealing cylinder, the water inlet cylinder is arranged on the side surface of the separation cylinder, two cooling pipes are arranged at one end of the inside of the water inlet cylinder, the collection cylinder is arranged at the other end of the cooling pipes, a circular groove is formed in the side surface of the collection cylinder, and the cooling cylinder is arranged at the other surface of the collection cylinder.
The design of the cooling pipe and the connection with the collecting cylinder can form an efficient cooling system, which is helpful for removing the waste heat in the sealing cylinder and ensures that the system is kept in a proper temperature range. The presence of the water inlet cartridge may indicate that the cooling chamber has a separate water inlet system, helping to maintain the level and stability of the cooling system. The connection of the cooling pipe and the collecting cylinder can promote efficient heat exchange, and the waste heat in the sealing cylinder can be effectively transferred to the cooling system. The two cooling tube designs can provide a larger cooling surface area, thereby increasing the efficiency of the heat exchange. The design of the collecting cylinder, in particular the circular grooves on the side surface of the collecting cylinder, can be helpful for collecting and focusing the heat energy released in the cooling process, and the energy recovery efficiency is improved. The presence of the cooling cartridge may be used to further control the temperature of the system, ensuring that the gas or substance within the cooling chamber is within a desired temperature range. The modular design of the cooling chamber can make the system easier to maintain and clean, and improves the reliability and stability of the system. The connection between the different components can provide certain flexibility, so that the system can adapt to different working conditions and requirements.
The shape of the two cooling pipes is spiral, the two cooling pipes are alternately surrounded, a turning cylinder is arranged at the other end of each cooling pipe, the cross section of each turning cylinder is L-shaped, and the two turning cylinders are symmetrically connected to the collecting cylinder.
The spiral-shaped cooling tube can provide a larger surface area, improving heat exchange efficiency. The alternating arrangement of cooling tubes helps to optimize the cooling process, ensuring that heat can be evenly distributed throughout the cooling chamber. The spiral shape of the cooling tube promotes better mixing of the fluid and helps to achieve a uniform temperature distribution throughout the cooling chamber. In addition, the spiral shape can reduce the resistance of gas flow in the cooling pipe and improve the efficiency of gas transmission. The L-shaped cross section of the turning cylinder helps to change the flow direction of the gas so that the gas enters the collecting cylinder more uniformly. This helps to maintain the gas flow balance within the system. Two turning cylinders symmetrically connected to the collecting cylinder can improve the balance of the system and ensure the uniform distribution of the gas in the collecting cylinder. The design and connection modes of the different components enable the system to be maintained and cleaned more easily, so that the reliability of the system is improved. The design of the spiral cooling pipe and the turning cylinder is helpful for more effectively recovering heat energy and improving the energy utilization rate. The structural design ensures that the system can more efficiently utilize heat energy in the energy conversion process, thereby improving the performance of the whole system.
The cooling cylinder is internally provided with a fixed cylinder, the side surface of the fixed cylinder is provided with a spiral blade, and the spiral blade is provided with a buffer hole.
The existence of the helical blades and the buffer holes can enhance the cooling process, so that the liquid is more fully contacted with the cooling medium, the cooling efficiency is improved, and therefore, more uniform heat shrinkage contact and more stable temperature reduction are realized. The helical blade can improve the hydrodynamic characteristics of the gas in the cooling cylinder, reduce the resistance and improve the efficiency of gas flow. The design of buffer hole helps alleviating the impact force that liquid flow brought, reduces the rotation of fixed section of thick bamboo, and then improves the energy recuperation efficiency in the cooling process. The presence of the helical blades helps to reduce mechanical vibrations and noise caused by the gas flow and to improve the quietness of operation of the system. The design of the stationary drum and the helical blades may make the system easier to maintain, facilitating periodic cleaning and maintenance. The advantage of the design structure ensures that the system is more stable and reliable in long-term operation, and improves the maintainability and reliability of the system.
The beneficial effects of the invention are as follows:
1. the invention is beneficial to reducing the pressure loss in the system by designing the vacuum chamber and the vortex shape and the specific arrangement mode of the transportation pipe, and the vortex shape of the transportation pipe reduces the resistance of the gas in the pipeline, thereby reducing the pressure loss, improving the gas transportation efficiency in the vacuum chamber, reducing the energy consumption, improving the gas flow efficiency, ensuring the uniform gas transmission in all directions, being beneficial to ensuring the same distance from the transportation pipe to the adsorption cylinder during the adsorption, and simultaneously enabling the transportation pipe to apply the same suction force to the position of the adsorption hole in the subsequent adsorption process.
2. The invention provides a larger cooling surface area by designing a cooling chamber and the spiral shape and the alternate arrangement of the cooling pipes, improves the heat exchange efficiency and ensures that the waste heat in the sealing cylinder can be effectively transferred into the cooling chamber. The existence of helical blade has improved the liquid and can more even cool off the pyrocondensation pipe when flowing, and fluid dynamic characteristic in cooling cylinder has reduced the resistance, has improved the efficiency that gas flowed, through the structural design of cooling pipe, collection section of thick bamboo and cooling cylinder, and the heat energy is retrieved more effectively to the system, has improved energy utilization.
3. The invention designs the adsorption cylinder, the sector blocks make the adsorption cylinder have more uniform adsorption performance in operation, because the sector blocks provide more adsorption surfaces, the adsorption cylinder is favorable for uniformly distributing adsorption force, and the adsorption holes are symmetrically arranged at two sides of the transmission hole by the axisymmetric design, so that the adsorption force is uniformly distributed in the adsorption cylinder, and the adsorption force of all parts is ensured to be the same.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
The above and other aspects of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic overall view of the present invention;
FIG. 2 is a cross-sectional view of a vacuum chamber of the present invention;
FIG. 3 is a schematic view of a transport tube of the present invention;
FIG. 4 is a cross-sectional view of the adsorption cartridge and the connecting cartridge of the present invention;
FIG. 5 is a schematic view of a segment of the present invention;
FIG. 6 is a schematic view of the location of a scallop groove of the present invention;
FIG. 7 is a schematic diagram of the inferior arc chute position of the present invention;
FIG. 8 is a schematic view of a connector according to the present invention;
FIG. 9 is a 1/3 cross-sectional view of the connecting cylinder of the present invention;
FIG. 10 is a 2/3 cross-sectional view of the connector barrel of the present invention;
FIG. 11 is a schematic view of a cooling chamber of the present invention;
FIG. 12 is a schematic view of a cooling cartridge of the present invention.
In the figure: 1. a die nozzle; 2. a heating chamber; 21. heating the hole; 3. a vacuum chamber; 31. a sealing cylinder; 32. a vacuum tube; 33. a transport tube; 331. an elbow; 332. an adjusting tube; 34. an adsorption cylinder; 341. a sector block; 342. an L-shaped through hole; 343. inferior arc grooves; 344. a transmission hole; 345. adsorption holes; 35. a connecting cylinder; 351. an outer aperture; 3511. a semi-annular groove; 3512. an L-groove; 352. an inner bore; 3521. a semicircular groove; 3522. a transport tank; 353. a fan-shaped groove; 36. a front template; 4. a cooling chamber; 41. a barrier cylinder; 42. a water inlet cylinder; 43. a cooling tube; 431. a turning cylinder; 44. a collection cylinder; 441. a circular groove; 45. a cooling cylinder; 451. a fixed cylinder; 452. a helical blade; 453. and (5) buffering the holes.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
As shown in fig. 1, the improved uniform expansion die for PVC heat shrink tubing provided by the invention comprises a die nozzle 1 and a heating chamber 2, wherein the heating chamber 2 is arranged at the coaxial center of the die nozzle 1, the heating hole 21 is arranged at the side surface of the heating chamber 2, the die further comprises a vacuum chamber 3 and a cooling chamber 4, a transport tube 33 in the vacuum chamber 3 is communicated to an L-shaped through hole 342 at the side surface of an adsorption tube 34 through the lower end of a regulating tube 332, the L-shaped through holes 342 are symmetrically distributed, the transport tube 33 circulates to the adsorption tube 34 and is subjected to primary flow division through a sector groove on the adsorption tube 34, meanwhile, the two rows of adsorption holes 345 of the transmission holes 344 communicated with the minor arc grooves 343 are subjected to secondary flow division, the branched gas is driven by the two rows of adsorption holes 345 to expand to the periphery through the centrally branched minor arc grooves 343, the adsorption holes 345 are further expanded to the periphery through the adsorption tube, the cooling chamber 4 is driven by the adsorption holes 345 on the adsorption tube 34 to rotate and simultaneously cool the adsorption tube, and the liquid inside the adsorption tube is fixed to flow through the adsorption tube 345 on the adsorption tube 34, and the liquid inside the heat shrink tube is driven to flow and fixed.
By introducing the vacuum chamber 3 and the cooling chamber 4, uniform expansion of the heat shrinkage tube is successfully realized, and the vacuum chamber 3 helps to reduce resistance of gas in the pipeline by adsorbing internal air, so that gas circulation efficiency is improved, and the adsorption effect of the adsorption cylinder 34 on the heat shrinkage tube is promoted. And the vacuum chamber 3 can effectively remove bubbles and air in the gas, prevent them from affecting the adsorption quality of the heat shrink tube, and this helps to improve the surface quality and appearance of the product. The cooling chamber 4 adsorbs and firmly adheres the heat-shrinkable tube through the adsorption cylinder 34, so that the uniform expansion of the heat-shrinkable tube is further ensured. The cooling chamber 4 allows the heat shrink tube to be rapidly adsorbed and cooled while being unfolded, so that the shape of the heat shrink tube is stabilized, and the heat can be dispersed to the whole surface of the heat shrink tube by the liquid flow in the cooling chamber 4. This helps to ensure uniform adsorption of the heat shrink tube by the adsorption cylinder 34 and prevents local overheating from causing quality problems. The effect of the cooling chamber 4 also includes preventing the accumulation of gas on the heat shrink tubing surface, helping to ensure that gas is uniformly absorbed by the heat shrink tubing. This is important to avoid problems such as bubbles generated by the gas during adsorption. Through effectual cooling, can improve the stability of adsorption process, avoid because the inhomogeneous or overheated production problem that leads to of temperature, and then improve uniformity and the quality of product. The vacuum chamber 3 realizes the accurate control of the expansion process of the heat shrinkage tube through the accurate adsorption of the internal air, and ensures that the heat shrinkage tube maintains uniformity and stability in the expansion process. The water inlet tube 42 is used for fixing the heat-shrinkable tube in a molding way, so that the shape of the heat-shrinkable tube after being unfolded is effectively maintained, and the stability and the reliability of the product are improved.
As shown in fig. 2, 3 and 4, the vacuum chamber 3 includes a sealing cylinder 31, a vacuum tube 32, a transporting tube 33, an adsorption cylinder 34, a connecting cylinder 35 and a front template 36, the sealing cylinder 31 is installed at the rear end of the heating chamber 2, two vacuum tubes 32 are installed on the sealing cylinder 31, the transporting tube 33 is installed at the lower end of the vacuum tube 32, the tail ends of the two transporting tubes 33 are spaced by 90 ° on the same circular ring, the two transporting tubes 33 are in a vortex shape, an elbow 331 is installed at the lower end of the transporting tube 33, a regulating tube 332 is installed at the other end of the elbow 331, the cross section of the regulating tube 332 is in an S shape, the tail ends of the regulating tube 332 are on the same circular ring, the adsorption cylinder 34 is installed at the coaxial center of the sealing cylinder 31, the connecting cylinder 35 is installed at the left end of the adsorption cylinder 34, the suction force of the suction hole 345 can be gradually reduced from left to right, thereby the front end can expand the heat-shrink tube by a larger suction force, and the heat shrink tube is avoided, thereby the problem of continuously deforming the heat shrink tube and the foaming tube 35 is installed at the front end, and the front template is installed.
The transport pipe 33 adopts a vortex shape and a specific arrangement to reduce pressure loss inside the system and improve gas flow efficiency. The conditioning and adsorption cylinders 34 allow for better control of the gas flow and pressure inside the mold, thereby improving the stability and performance of the mold. The vortex shape and the reasonable interval on the same circular ring are beneficial to realizing uniform gas flow of the adsorption holes 345 in the whole adsorption process, ensuring uniform gas transmission in all directions and avoiding the problem of uneven suction force of the heat shrinkage tube caused by uneven flow. In addition, the vortex shape reduces the resistance of the gas in the pipeline, thereby reducing the pressure loss, improving the gas transportation efficiency in the vacuum chamber 3 and reducing the energy consumption.
Due to the vortex-like shape, the fluid flows more easily within the pipe, reducing the formation of dead corners and accumulation areas, helping to prevent gas accumulation. This further improves the uniformity and stability of the adsorption sleeve 34 in adsorbing the heat shrink tube, avoiding uneven adsorption distribution resulting in a difference in surface smoothness, or the appearance of bubbles, wrinkles, or non-uniformities in certain areas. The 90 ° spacing of the ends of the transport tubes 33 on the same ring helps ensure that the transport tubes 33 are equally spaced from the suction drum 34 during suction and apply the same suction to the suction holes 345 during subsequent suction. The adjusting tube 332 has an S-shaped cross section, has excellent fluid control performance, and can more precisely adjust the gas flow. This helps ensure that the gas is uniformly and stably adsorbed on the L-shaped through holes 342 of the adsorption cylinder 34, and the S-shaped regulating tube 332 keeps the flow passage uniform between different pipes, thereby achieving an equal suction force to the heat shrink tube adsorption holes 345. The L-shaped through hole 342 gradually reduces the suction force from the connecting cylinder 35 to the adsorption cylinder 34 when the gas circulates, so that the heat shrinkage tube can be stably adsorbed on the inner wall of the adsorption cylinder 34, and the uniform expansion of the heat shrinkage tube is realized. The S-shaped cross section is beneficial to reducing the resistance of gas in a pipeline, reducing the pressure loss, improving the transportation efficiency of a gas system and reducing the energy consumption. In addition, the S-shaped cross section can enable the gas to flow more stably, and turbulence and unstable flow are reduced.
As shown in fig. 5, 6 and 7, the adsorption cylinder 34 is composed of four segments 341, two adjacent segments 341 are provided with L-shaped through holes 342, one end of each L-shaped through hole 342 corresponds to the adjusting tube 332, one side of each segment 341, which is close to the connecting cylinder 35, is provided with a minor arc slot 343, two ends of each minor arc slot 343 are communicated with a transmission hole 344, two sides of each transmission hole 344 are communicated with adsorption holes 345, and each adsorption hole 345 is formed on each segment 341.
By the design of the four segments 341, the adsorption cartridge 34 can exhibit a more uniform adsorption performance during operation, as the segments provide more adsorption surface, thereby promoting uniform distribution of adsorption forces. The L-shaped through hole 342 channel reduces the flow resistance of the gas, improving the flow efficiency of the gas in the adsorption cylinder 34. Meanwhile, the design guides the flow of the gas in the adjusting tube 332 and is matched with the groove on the connecting tube 35, so that the adsorption tube 34 can not adsorb the heat shrink tube due to the fact that the air can not smoothly circulate in circulation, and the uniform expansion of the heat shrink tube is ensured. The presence of the minor arc groove 343 and the transfer hole 344 provides more precise adsorption control so that the performance of the adsorption cartridge 34 can be flexibly adjusted when needed. The transfer holes 344 connect the ends of the minor arc grooves 343 to help balance the flow of gas within the adsorption cartridge 34 and prevent localized pressure imbalance and gas buildup. In addition, they distribute the gas more evenly into the adsorption holes 345 while circulating. Through the symmetrical design of axis, adsorption holes 345 are symmetrically arranged at two sides of transmission hole 344, which is helpful for realizing uniform distribution of adsorption force in adsorption cylinder 34, ensuring similar adsorption performance of each part and improving consistency and stability of the system. This helps to maintain a uniform flow of gas throughout the adsorption cartridge 34, reducing the likelihood of localized pressure imbalances.
As shown in fig. 8, four rows of suction holes 345 are formed in the circumferential array on each segment 341, and the suction holes 345 in the circumferential direction of the segment 341 are equally spaced from each other.
The four rows of the adsorption holes 345 distributed at equal intervals are designed to achieve uniform adsorption performance of the adsorption cylinder 34 in the entire circumferential direction. This ensures that the adsorption force can be uniformly distributed on the surface of the adsorption cylinder 34, thereby improving the uniform adsorption effect on the heat shrinkable tube. The layout of the adsorption holes 345 in the circumferential direction is optimized, so that the flow of the gas in the adsorption cylinder 34 is optimized optimally, the resistance is reduced, the gas circulation efficiency is improved, and the adsorption cylinder 34 can effectively adsorb and stably fix the heat shrinkage tube during operation.
The equidistant arrangement and axially symmetric design of the adsorption ports 345 helps to maintain an even distribution of adsorption forces in the adsorption cartridge 34, thereby improving system stability and consistency. This ensures that the adsorption properties of the various parts are similar, increasing the reliability of the die to the expansion of the heat shrink tubing. Equidistant placement improves production efficiency and reduces manufacturing costs. And more precise adsorption control can be provided by the minor arc groove 343 and the transfer hole 344 on the segment 341, and the smart design of the adsorption hole 345.
As shown in fig. 4 and 6, one surface of the connecting cylinder 35, which is close to the sector block 341, is provided with an outer hole 351 and an inner hole 352, the outer hole 351 and the inner hole 352 are communicated with two L-shaped through holes 342 on the adsorption cylinder 34, the right side surface of the connecting cylinder 35 is provided with four sector grooves 353, and the sector grooves 353 and the minor arc grooves 343 are the same in size and are correspondingly communicated.
The outer hole 351 and the inner hole 352 are connected with the L-shaped through hole 342 in an eccentric manner, so that the influence of gas on the inner part of the outer hole 351 and the inner hole 352 in circulation is minimized, the gas in the outer hole 351 and the inner hole 352 can circulate more stably, and uneven adsorption between the circular ring one row of adsorption holes 345 caused by unstable flow is reduced. The outer aperture 351 has a length three times that of the inner aperture 352, which helps to separate the gases stably while circulating, ensuring that the gases between the two do not interfere with each other. Such a design facilitates independent gas flow in different sections, increasing the flexibility and efficiency of the system. The design of the outer and inner apertures 351, 352 effectively prevents the gases from interfering with each other during flow, keeping the gases in the respective channels relatively independent. This helps to maintain stability and controllability of the system and increases the surface area of the connecting barrel 35. The design of the outer and inner holes 351, 352 can change the path of gas flow, optimize the flow of gas in the connecting cylinder 35, reduce resistance and improve gas transmission efficiency. The corresponding design of the fan-shaped groove 353 and the minor arc groove 343 helps to provide better interface between the connector cartridge 35 and the adsorption cartridge 34, enhancing the robustness and stability of the connection. This design ensures the coordination between the connecting cylinder 35 and the adsorption cylinder 34, helps to optimize the overall performance of the system, and the four fan-shaped grooves 353 formed on the right side surface of the connecting cylinder 35 are identical in size and correspondingly communicated with the minor arc grooves 343, so that more stable connection can be provided. This ensures the firmness of the connection and helps balance the flow of gas between the connecting cartridge 35 and the adsorption cartridge 34. The right side of the connecting cylinder 35 is designed with a scalloped groove 353 which helps provide a sturdy construction. Furthermore, the symmetrical design may help to maintain balance of the system, reducing problems due to asymmetry.
As shown in fig. 8 and 9, the other end of the outer hole 351 is communicated with a semi-circular groove 3511, the cross section of the semi-circular groove 3511 is semi-circular, two ends of the semi-circular groove 3511 are connected with an L-shaped groove 3512, and the other end of the L-shaped groove 3512 is communicated with the center of the fan-shaped groove 353.
By the design of the half-ring grooves 3511, L-grooves 3512 and fan grooves 353, the gas flow control performance of the system is improved, enabling more precise adjustment of the flow and distribution of gas in the connecting cylinder 35, thereby optimizing system performance. The use of the outer apertures 351 in these designs increases the surface area of the connector barrel 35, helping to increase heat exchange efficiency, particularly in applications where heat exchange is desired. The structural design of these grooves helps to achieve temperature uniformity of the gas flow within the connecting cylinder 35, which is beneficial for applications where control of the temperature profile is required. The more complex structural design improves the stability of the system, which is critical for systems operating for long periods of time or under unstable environmental conditions. The combination of semi-annular grooves 3511, L-shaped grooves 3512 and fan-shaped grooves 353 can improve the adjustability of the system, so that the system can be more easily adapted to the operation requirements under different conditions, the design flexibility is beneficial to the system to realize the optimal performance under different working conditions, the applicability and efficiency of the whole system are improved, and the L-shaped grooves 3512 are connected to the fan-shaped grooves 353 to stably split the gas, so that the suction force of each suction hole 345 to the heat shrink tube is the same.
As shown in fig. 10, the other end of the inner hole 352 is connected with a semicircular groove 3521, the inner hole 352 is connected to the center of the semicircular groove 3521, the cross section of the semicircular groove 3521 is semicircular, two ends of the semicircular groove 3521 are connected with a transporting groove 3522, the cross section of the transporting groove 3522 is L-shaped, and the other end of the transporting groove 3522 is connected to the center of the fan-shaped groove 353.
The structural design of the half-groove 3521, the transport groove 3522 and the fan-shaped groove 353 helps to improve the accuracy of control of the flow of gas within the inner bore 352, thereby optimizing the delivery and distribution of the gas. The L-shaped transportation groove 3522 can effectively reduce the resistance of gas in the transportation groove, improve the flow efficiency of the gas, and is particularly suitable for the application requiring high-efficiency gas transmission. The design of the half-groove 3521 and the transport groove 3522 increases the surface area of the inner bore 352, which helps to improve the heat transfer performance of the system, and may be more effective especially in applications requiring heat exchange. The more complex structural design improves the stability of the system, making it more suitable for operation under different conditions. The combined design of half tank 3521, transport tank 3522 and fan tank 353 increases the versatility of the system making it easier to accommodate different operating requirements and environmental conditions, and the connection of transport tank 3522 to fan tank 353 allows for a stable split flow of gas, thus making the suction of each suction hole 345 to the heat shrink tubing the same.
As shown in fig. 11, the cooling chamber 4 includes a blocking cylinder 41, a water inlet cylinder 42, cooling pipes 43, a collecting cylinder 44 and a cooling cylinder 45, the blocking cylinder 41 is installed at the other end of the sealing cylinder 31, the water inlet cylinder 42 is installed at the side of the blocking cylinder 41, two cooling pipes 43 are installed at one end of the inside of the water inlet cylinder 42, the collecting cylinder 44 is installed at the other end of the two cooling pipes 43, a circular groove 441 is formed at the side of the collecting cylinder 44, and the cooling cylinder 45 is installed at the other side of the collecting cylinder 44.
The smart design of the cooling tube 43 and the connection to the collection canister 44 creates a highly efficient cooling system that effectively removes waste heat from the sealed canister 31, ensuring that the system remains within a suitable temperature range. The presence of the water inlet cartridge 42 may indicate that the cooling chamber 4 has a separate water inlet system that helps to maintain the level and stability of the cooling system. The connection of the cooling tube 43 to the collection canister 44 promotes efficient heat exchange, ensuring efficient transfer of the residual heat within the seal canister 31 to the cooling system. The design of the two cooling tubes 43 may provide a larger cooling surface area, thereby improving the efficiency of the heat exchange. The design of the collector 44, and in particular the side annular grooves 441 thereof, can help to focus and collect the heat energy released during cooling, improving the energy recovery efficiency. The presence of the cooling cartridge 45 may be used to further control the temperature of the system, ensuring that the gas or substance within the cooling chamber 4 is within a desired temperature range. The modular design of the cooling chamber 4 may make the system easier to maintain and clean, improving the reliability and stability of the system. The connection between the different components can provide certain flexibility, so that the system can adapt to different working conditions and requirements.
As shown in fig. 12, two cooling pipes 43 are spirally shaped, and two cooling pipes 43 are alternately surrounded, a turning cylinder 431 is installed at the other end of the cooling pipe 43, the cross-sectional shape of the turning cylinder 431 is L-shaped, and the two turning cylinders 431 are symmetrically connected to a collecting cylinder 44.
The spiral shaped cooling tube 43 design provides a larger surface area, thereby increasing the heat exchange efficiency. The alternating arrangement of these cooling pipes 43 optimizes the cooling process, ensuring a uniform distribution of heat to the entire cooling chamber 4. The spiral-shaped cooling tube 43 promotes better mixing of the fluid, which contributes to achieving a uniform temperature distribution throughout the cooling chamber 4. In addition, the spiral shape reduces resistance to gas flow in the cooling tube 43, improving efficiency of gas transport. The L-shaped cross-section of the turning cylinder 431 helps to change the direction of the flow of gas so that the gas enters the collection cylinder 44 more uniformly. This helps to maintain the gas flow balance within the system. Two turning cylinders 431 symmetrically connected to the collection cylinder 44 improve the balance of the system, ensuring a uniform distribution of gas in the collection cylinder 44. The design and the connection mode of different components enable the system to be easier to maintain and clean, and the reliability of the system is improved. The design of the spiral-shaped cooling tube 43 and the turning cylinder 431 helps to more effectively recover heat energy and improve energy utilization. The structural design ensures that the system utilizes heat energy more efficiently in the energy conversion process, thereby improving the performance of the whole system.
As shown in fig. 12, a fixed tube 451 is mounted inside the cooling tube 45, a spiral blade 452 is mounted on a side surface of the fixed tube 451, and a buffer hole 453 is provided on the spiral blade 452.
The introduction of the spiral blades 452 and the buffer holes 453 can significantly enhance the cooling process, so that the liquid is more fully contacted with the cooling medium, thereby improving the cooling efficiency and realizing more uniform heat shrinkage tube contact and more stable temperature reduction. The presence of the helical blades 452 may improve the hydrodynamic characteristics of the gas in the cooling cartridge 45, reduce drag, and increase the efficiency of the gas flow. The design of the buffer holes 453 helps to alleviate the impact force caused by the liquid flow, reduce the rotation of the fixed cylinder 451, and further improve the energy recovery efficiency in the cooling process. The presence of the helical blades 452 also helps to reduce mechanical vibration and noise caused by the gas flow, and improves the quietness of operation of the system. The design of the fixed barrel 451 and the screw blades 452 may make the system easier to maintain, facilitating periodic cleaning and maintenance. The advantage of the design structure s ensures that the system is more stable and reliable in long-term operation, and improves the maintainability and reliability of the system.
In the working process of the invention, a worker heats the heating chamber 2 to enable a die to reach a preset production temperature in a short time, so that a stretching cylinder in the expander transports the heat shrinkable tube from the heating chamber 2 into a vacuum chamber 3 at the rear end, the vacuum chamber 3 firstly absorbs air in the transport tube 33 through the vacuum tube 32 to realize vacuum inside the adsorption cylinder 34 and the connecting cylinder 35, thereby realizing vacuum inside the adsorption hole 345, the inside of the heat shrinkable tube is provided with gas, thereby forming a pressure difference to realize that the heat shrinkable tube is adsorbed on the inner wall of the adsorption cylinder 34, the lower end of the transport tube 33 positions an elbow 331 and a regulating tube 332 on an L-shaped through hole 342 of the adsorption cylinder 34, air in the L-shaped through hole 342 is absorbed, and then the air in the outer hole 351 and an inner hole 352 is absorbed, the air in the inner hole 352 flows to drive the inner gas in the semi-ring groove 3511 and the L-shaped groove 3512, and the air in the adsorption cylinder 345 are driven to flow due to the correspondence of the fan-shaped groove 353 and the minor arc groove 343, the air in the adsorption cylinder 345 is adsorbed inside the transport hole 345, the heat shrinkable tube is formed to realize the adsorption of the air in the adsorption cylinder, the heat shrinkable tube is adsorbed on the inner wall of the adsorption cylinder 34 is adsorbed on the inner wall of the L-shaped through the heat shrinkable tube, the L-shaped through the regulating tube 332, the L-shaped through the air is cooled tube, the air is cooled down inside the heat shrinkable tube 43 and the heat shrinkable tube is cooled by the heat shrinkable tube, and the heat shrinkable tube is cooled by the heat shrinkable tube 43, and the heat absorption tube is cooled down by the heat absorption tube and cooled down air, and the heat absorption tube is cooled down by the heat absorption tube air, and the heat absorption tube air. Thereby cooling the heat shrink tube.
The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides an even expansion die of improved generation PVC heat shrinkage bush, includes mould mouth (1) and heating chamber (2), heating chamber (2) are installed to the coaxial heart of mould mouth (1), heating chamber (2) side-mounting has heating hole (21), and characterized in that still includes vacuum chamber (3) and cooling chamber (4), transport pipe (33) in vacuum chamber (3) communicate on L shape through-hole (342) of absorption tube (34) side through the lower extreme of adjusting tube (332), the symmetry distributes L shape through-hole (342) are through carrying out centering bifurcation to inferior arc groove (343) on absorption tube (34), and the inferior arc groove (343) of centering bifurcation drives the pyrocondensation pipe and expands all around, and simultaneously the absorption hole (345) of two rows of transmission hole (344) of inferior arc groove (343) intercommunication are centering bifurcation again; the cooling chamber (4) adsorbs the heat shrinkage tube through adsorption holes (345) on the adsorption cylinder (34) and simultaneously the liquid in the cooling tube (43) flows onto the blades spirally arranged at the rear end of the cooling tube (43);
The vacuum chamber (3) comprises a sealing cylinder (31), vacuum pipes (32), a conveying pipe (33), an adsorption cylinder (34), a connecting cylinder (35) and a front template (36), wherein the sealing cylinder (31) is arranged at the rear end of the heating chamber (2), two vacuum pipes (32) are arranged on the sealing cylinder (31), the conveying pipe (33) is arranged at the lower end of each vacuum pipe (32), an elbow (331) is arranged at the lower end of each conveying pipe (33), an adjusting pipe (332) is arranged at the other end of each elbow (331), the cross section of each adjusting pipe (332) is S-shaped, the tail ends of the two adjusting pipes (332) are arranged on the adsorption cylinder (34), the adsorption cylinder (34) is arranged in the coaxial center of the sealing cylinder (31), the connecting cylinder (35) is arranged at the left end of the adsorption cylinder (34), and the front template (36) is arranged at the left end of the connecting cylinder (35);
the adsorption cylinder (34) is composed of four sector blocks (341), two adjacent sector blocks (341) are provided with L-shaped through holes (342), one end of each L-shaped through hole (342) corresponds to an adjusting pipe (332), one side, close to the connecting cylinder (35), of each sector block (341) is provided with a minor arc groove (343), two ends of each minor arc groove (343) are communicated with transmission holes (344), two sides of each transmission hole (344) are communicated with adsorption holes (345), and each adsorption hole (345) is formed in each sector block (341).
2. The improved uniform expansion die for PVC heat-shrinkable tubing as recited in claim 1, wherein: four rows of adsorption holes (345) are formed in the circumferential array of each sector block (341), and the adsorption holes (345) in the circumferential direction of each sector block (341) are equally spaced from the adsorption holes (345).
3. The improved uniform expansion die for PVC heat-shrinkable tubing as recited in claim 2, wherein: the connecting cylinder (35) is close to one surface of the sector block (341) and is provided with an outer hole (351) and an inner hole (352), the outer hole (351) and the inner hole (352) are communicated with two L-shaped through holes (342) on the adsorption cylinder (34), the right side surface of the connecting cylinder (35) is provided with four sector grooves (353), and the sector grooves (353) and the minor arc grooves (343) are identical in size and are correspondingly communicated.
4. A modified PVC heat shrink uniform expansion die according to claim 3, wherein: the other end of the outer hole (351) is communicated with a semi-circular groove (3511), the cross section of the semi-circular groove (3511) is semi-circular, two ends of the semi-circular groove (3511) are connected with L grooves (3512), and the other end of the L grooves (3512) is communicated with the center of the fan-shaped groove (353).
5. A modified PVC heat shrink uniform expansion die according to claim 3, wherein: the other end intercommunication of L shape through-hole (342) has hole (352), the other end intercommunication of hole (352) has semicircle groove (3521), and hole (352) intercommunication to the center of semicircle groove (3521), the cross section shape of semicircle groove (3521) is semi-circular, the both ends of semicircle groove (3521) are connected with transportation groove (3522), the cross section shape of transportation groove (3522) is L shape, the other end intercommunication of transportation groove (3522) is at the center of fan-shaped groove (353).
6. The improved uniform expansion die for PVC heat-shrinkable tubing as recited in claim 1, wherein: the cooling chamber (4) comprises a separation barrel (41), a water inlet barrel (42), cooling pipes (43), a collection barrel (44) and a cooling barrel (45), the other end of the sealing barrel (31) is provided with the separation barrel (41), the side face of the separation barrel (41) is provided with the water inlet barrel (42), one end of the inside of the water inlet barrel (42) is provided with the two cooling pipes (43), the other end of the cooling pipes (43) is provided with the collection barrel (44), the side face of the collection barrel (44) is provided with a circular groove (441), and the other face of the collection barrel (44) is provided with the cooling barrel (45).
7. The improved uniform expansion die for PVC heat-shrinkable tubing as recited in claim 6, wherein: the shape of the two cooling pipes (43) is spiral, the two cooling pipes (43) are alternately surrounded, a turning cylinder (431) is arranged at the other end of the cooling pipe (43), the cross section of the turning cylinder (431) is L-shaped, and the two turning cylinders (431) are symmetrically connected to a collecting cylinder (44).
8. The improved uniform expansion die for PVC heat-shrinkable tubing as recited in claim 6, wherein: the cooling cylinder (45) is internally provided with a fixed cylinder (451), the side surface of the fixed cylinder (451) is provided with a spiral blade (452), and the spiral blade (452) is provided with a buffer hole (453).
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| CN202410028990.3A CN117549546B (en) | 2024-01-09 | 2024-01-09 | Improved generation PVC heat shrinkage bush evenly expands mould |
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| CN202410028990.3A CN117549546B (en) | 2024-01-09 | 2024-01-09 | Improved generation PVC heat shrinkage bush evenly expands mould |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001191412A (en) * | 2000-01-11 | 2001-07-17 | Asahi Intecc Co Ltd | Method for welding hot-melt synthetic resin |
| RU168650U1 (en) * | 2016-08-26 | 2017-02-14 | Руслан Александрович Севрюков | DEVICE FOR EXTENSION OF PIPES FROM THERMOUSTAINABLE MATERIAL |
| CN115157645A (en) * | 2022-06-22 | 2022-10-11 | 上海应用技术大学 | Expansion die for heat-shrinkable tube with double cooling chambers |
| CN219076516U (en) * | 2022-12-19 | 2023-05-26 | 苏州晗普新材料科技有限公司 | Expansion die of expander |
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- 2024-01-09 CN CN202410028990.3A patent/CN117549546B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001191412A (en) * | 2000-01-11 | 2001-07-17 | Asahi Intecc Co Ltd | Method for welding hot-melt synthetic resin |
| RU168650U1 (en) * | 2016-08-26 | 2017-02-14 | Руслан Александрович Севрюков | DEVICE FOR EXTENSION OF PIPES FROM THERMOUSTAINABLE MATERIAL |
| CN115157645A (en) * | 2022-06-22 | 2022-10-11 | 上海应用技术大学 | Expansion die for heat-shrinkable tube with double cooling chambers |
| CN219076516U (en) * | 2022-12-19 | 2023-05-26 | 苏州晗普新材料科技有限公司 | Expansion die of expander |
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