Thermal shrinkage device

Abstract

The utility model provides a thermal shrinkage device which is characterized in that a transmission mechanism is arranged on a rack, and the transmission mechanism is movably arranged; the thermal shrinkage box and the transmission mechanism define a containing cavity, the containing cavity is used for containing a to-be-machined workpiece conveyed by the transmission mechanism, and the thermal shrinkage box is provided with an inlet and an outlet through which the to-be-machined workpiece passes; the thermal shrinkage assembly is arranged on the top wall of the thermal shrinkage box in a penetrating mode and comprises an air heater and an air cap mechanism, the air heater is arranged on the outer side of the thermal shrinkage box, at least part of the air cap mechanism is arranged in the containing cavity, the air cap mechanism comprises an air inlet and a plurality of air outlets which communicate with each other, and the air inlet communicates with the air heater; the multiple air outlets are formed in the upper portion of the to-be-machined part, and each air outlet faces the top end of the to-be-machined part so that hot air can be blown to an opening in the top of a thermal shrinkage bag arranged on the outer side of the to-be-machined part in a sleeving mode. According to the thermal shrinkage device, the problem that in the prior art, a yarn roll thermal shrinkage bag is prone to causing protection failure is effectively solved through accurate local thermal shrinkage.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass fiber production equipment technical field, concretely relates to a heat shrinkage device. BACKGROUND

[0002] In the glass fiber production and subsequent processing process, the protection and packaging of the yarn ball are particularly important. At present, the yarn ball is usually protected by a heat-shrinkable bag after production to prevent the yarn ball from being attacked by external factors such as dust and moisture during transportation and storage, and to avoid surface damage caused by collision. At present, the yarn ball is placed in the heat-shrinkable bag, and the bag opening is usually upright and slightly higher than the top end of the yarn ball to ensure that the heat-shrinkable bag can completely cover the periphery of the yarn ball after heat shrinking, thereby providing effective protection.

[0003] However, the above-mentioned traditional packaging method has significant technical problems in actual operation, as follows:

[0004] During the heating process, due to the temperature change between the heat-shrinkable bag and the yarn ball, the heat-shrinkable bag may shrink unevenly, causing the bag opening position to change, especially when the heat-shrinkable bag is thin or the heat-shrinking process is not properly controlled, the bag opening is easily "sucked in" by the hot air and lowered.

[0005] During transportation, the yarn ball often needs to be moved for a long distance through a production line, and the bag opening of the heat-shrinkable bag is easily rubbed and pulled by the conveying equipment during this process, especially when the yarn ball and the conveying equipment move relatively, the bag opening is often pulled from a higher position to below the upper end surface of the yarn ball, causing the heat-shrinkable bag to fail to effectively wrap the upper end periphery of the yarn ball after heat shrinking, losing its protective effect.

[0006] It can be seen that the above-mentioned traditional packaging method often cannot maintain its initial position during the subsequent heating process and transportation process, thereby losing its protective effect on the yarn ball, resulting in failure to protect the yarn ball. UTILITY MODEL CONTENT

[0007] The main purpose of the utility model is to provide a heat-shrinkable device to solve the technical problem that the packaging method of the yarn ball in the prior art easily leads to failure to protect the yarn ball.

[0008] In order to achieve the above object, according to one aspect of the present application, a heat shrinking device is provided, comprising a rack, a transmission mechanism arranged on the rack, the transmission mechanism movably conveying workpieces with heat shrink bags sleeved in a first direction; a heat shrinking box, the heat shrinking box and the transmission mechanism enclosing a containing cavity, the containing cavity being used for containing the workpieces conveyed by the transmission mechanism, the heat shrinking box being provided with an inlet and an outlet for the workpieces to pass through in the first direction respectively; a heat shrinking assembly, the heat shrinking assembly being arranged on a top wall of the heat shrinking box, the heat shrinking assembly comprising a hot air blower and a hood mechanism, the hot air blower being arranged outside the heat shrinking box, at least part of the hood mechanism being arranged inside the containing cavity, the hood mechanism comprising an air inlet and a plurality of air outlets which are communicated with each other, the air inlet being communicated with the hot air blower, the plurality of air outlets being arranged above the workpieces, each air outlet being arranged towards a top end of the workpiece, so as to blow hot air to a top opening of the heat shrink bag sleeved outside the workpiece.

[0009] Further, the hood mechanism further comprises an air inlet pipe provided with the air inlet; an air outlet pipe communicated with the air inlet pipe, the air outlet pipe comprising an inner pipe and an outer pipe, the inner pipe and the outer pipe being sleeved to form an annular air outlet channel, the air inlet pipe being communicated with one end of the annular air outlet channel, the plurality of air outlets being arranged at the other end of the annular air outlet channel and distributed along the annular direction of the annular air outlet channel.

[0010] Further, the air outlet pipe comprises a first pipe part and a second pipe part, the first pipe part being communicated with the air inlet pipe, the first pipe part being a tapered part, the second pipe part being a cylindrical shape, a small end of the tapered part being communicated with the air inlet pipe, a large end of the tapered part being communicated with the second pipe part.

[0011] Further, in the direction away from the air inlet pipe, the lumen of the first pipe part gradually narrows.

[0012] Further, the diameter of the inner wall surface of the second pipe part is greater than the diameter of the outer circumferential surface of the workpiece.

[0013] Further, the plurality of air outlets are arranged above the workpiece and distributed around the workpiece in the circumferential direction of the workpiece; each air outlet is provided with an air outlet; wherein, the air outlet pipe is provided with a plurality of openings at the end away from the air inlet pipe, each opening is provided with an air outlet, and the air outlet of each air outlet is arranged towards the workpiece.

[0014] Further, the outer circumferential wall of the heat shrinking box comprises an inner side wall and an outer side wall, a hot air channel is formed between the inner side wall and the outer side wall, one end of the hot air channel is communicated with the containing cavity, a hot air box is arranged above the heat shrinking box, the inside of the hot air box is communicated with the other end of the hot air channel.

[0015] Further, a plurality of air inlet holes are arranged on the inner side wall, the hot air channel is communicated with the containing cavity through the air inlet holes.

[0016] Further, the heat shrinking device further comprises a filtering assembly arranged at the plurality of air inlet holes; and / or the plurality of air inlet holes correspond to the top end of the workpiece to be processed.

[0017] Further, the transmission mechanism is a chain plate transmission mechanism or a belt transmission mechanism.

[0018] The technical scheme of the heat shrinking device is used, the rack provides a stable support foundation for the whole device, the transmission mechanism moves along the set first direction, is responsible for accurately conveying the workpiece (yarn ball) into the heat shrinking box, and sends it out after completing heat shrinking. The accurate positioning capability of the transmission mechanism ensures the correct position of the yarn ball in the heat shrinking process, thereby optimizing the heat shrinking effect. The accommodating cavity formed by the heat shrinking box and the transmission mechanism is the core space of the heat shrinking process, and the design thereof ensures the concentration and effective utilization of the hot air. The inlet and outlet of the heat shrinking box correspond to the entry and exit of the workpiece to be processed, respectively, and the sizes of these openings are matched with the workpiece to be processed, so as to reduce the leakage of hot air and improve the heat shrinking efficiency. The sealing property of the accommodating cavity helps to maintain the internal temperature and ensure uniform heat shrinking of the heat shrinking bag. The air blower is located outside the heat shrinking box and is responsible for generating high-temperature hot air. The air cap mechanism is at least partially located inside the accommodating cavity and is connected in communication with the air blower through the air inlet in the air cap mechanism, so as to introduce and distribute the hot air to the plurality of air outlets. The air outlets in the air cap mechanism are designed to face the top end of the workpiece to be processed, so as to accurately blow the hot air to the top opening of the heat shrinking bag and achieve the effect of local heat shrinking. The air inlet and the air outlet of the air cap mechanism are connected through a pipeline to form a hot air circulation system, thereby ensuring the uniform distribution and effective utilization of heat. The heat shrinking device of the present application effectively solves the problem that the yarn ball heat shrinking bag is prone to cause protection failure in the prior art through accurate local heat shrinking. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0020] Figure 1 A cross-sectional schematic view of an embodiment of the heat shrinking device according to the present application is shown;

[0021] Figure 2 A three-dimensional schematic view of an air cap mechanism of an embodiment of the heat shrinking device according to the present application is shown;

[0022] Figure 3 A three-dimensional schematic view of an embodiment of the heat shrinking device according to the present application is shown;

[0023] Figure 4 A schematic view of the state of a heat shrinking bag before heat shrinking according to an embodiment of the heat shrinking device according to the present application is shown;

[0024] Figure 5 A state diagram of a heat-shrunk bag after heat shrinking is shown according to an embodiment of the heat-shrinking device.

[0025] Among them, the above-mentioned drawings include the following reference signs:

[0026] 1, rack; 2, transmission mechanism; 3, heat-shrinking box; 31, side wall; 311, inner side wall; 311a, air inlet hole; 312, outer side wall; 32, top wall; 33, inlet; 34, outlet; 35, accommodating cavity; 36, hot air passage; 4, heat-shrinking assembly; 41, hot air blower; 42, air cap mechanism; 421, air inlet pipe; 421a, air inlet; 422, air outlet pipe; 422a, inner pipe; 422b, outer pipe; 422c, annular air outlet passage; 4221, first pipe part; 4222, second pipe part; 423, air outlet piece; 423a, air outlet; 5, hot air box; 6, piece to be processed; 7, heat-shrinking bag. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] In the present application, unless otherwise stated, the orientation words such as "up, down, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0030] As Figures 1 to 5As shown, the embodiment of the utility model provides a kind of heat shrink device, including rack 1, transmission mechanism 2 is arranged on rack 1, transmission mechanism 2 is movably arranged along to convey the workpiece 6 for being set with heat shrink bag 7 in first direction;Heat shrink box 3, heat shrink box 3 and transmission mechanism 2 form containing cavity 35 by enclosing, containing cavity 35 is used to accommodate workpiece 6 conveyed by transmission mechanism 2, heat shrink box 3 is along first direction respectively provided with the entrance 33 and outlet 34 for workpiece 6 to pass through;Heat shrink assembly 4, heat shrink assembly 4 is worn on the top wall 32 of heat shrink box 3, heat shrink assembly 4 includes hot air blower 41 and hood mechanism 42, hot air blower 41 is set to the outside of heat shrink box 3, at least part of hood mechanism 42 is set to the inside of containing cavity 35, hood mechanism 42 includes mutually communicating air inlet 421a and multiple air outlet 423a, air inlet 421a is communicated with hot air blower 41, multiple air outlet 423a is set to the above of workpiece 6, each air outlet 423a is towards the top end of workpiece 6 to set, to the top opening of heat shrink bag set on the outside of workpiece 6 blow hot air.

[0031] Adopt the heat shrink device provided by the utility model embodiment, by hood mechanism 42 accurate local heat shrink effectively solve the problem that yarn ball heat shrink bag is prone to collapse and lead to protection failure in the prior art.

[0032] In the above embodiments, the rack 1 serves as the basic structure of the heat shrinking device, carrying and fixing the transmission mechanism 2 and other key components. The transmission mechanism 2 moves along a preset first direction on the rack 1, responsible for accurately sending the workpiece 6 with the heat shrinking bag 7 into the heat shrinking box 3, and timely removing it after the heat shrinking is completed, ensuring the automation and high efficiency of the device. The accommodation cavity 35 formed by the heat shrinking box 3 and the transmission mechanism 2 together is the main working area of the heat shrinking process, which can effectively accommodate the yarn ball, and through the design of the inlet 33 and the outlet 34, it ensures the smooth transportation of the yarn ball before and after heat shrinking. The hot air generated by the hot air generator 41 is introduced through the air inlet 421a of the air cap mechanism 42, evenly distributed to multiple air outlets 423a through the internal pipeline system, and these air outlets 423a accurately blow hot air towards the heat shrinking bag opening at the top of the yarn ball, realizing local, rapid and uniform heat shrinking of the bag opening part. The inlet and outlet of the heat shrinking box correspond to the entry and exit of the workpiece, and the size of these openings matches the workpiece to reduce the leakage of hot air and improve the heat shrinking efficiency. The closed nature of the accommodation cavity helps to maintain the internal temperature and ensure uniform heat shrinking of the heat shrinking bag. The hot air generator is located outside the heat shrinking box and is responsible for generating high-temperature hot air. The air cap mechanism is at least partially located inside the accommodation cavity and is connected to the hot air generator through the air inlet inside it to introduce and distribute hot air to multiple air outlets. The air outlets in the air cap mechanism are designed to face the top of the workpiece to accurately blow hot air to the top opening of the heat shrinking bag, achieving the effect of local heat shrinking. The air inlet and air outlet of the air cap mechanism are connected by a pipeline to form a hot air circulation system, ensuring uniform distribution and effective use of heat.

[0033] The special design of the air cap mechanism 42, especially the layout and orientation of its multiple air outlets 423a, achieves accurate local heat shrinking of the top opening of the heat shrinking bag. This not only avoids the heat shrinking bag from sliding off the side of the yarn ball during subsequent transportation, but also reduces the overall use of hot air as heat shrinking is only performed on the bag opening part, saving energy. The combination of the rapid transmission capability of the transmission mechanism and the instant heating feature of the hot air generator enables the heat shrinking device to adapt to high-frequency yarn ball entry and exit, suitable for assembly line production. In addition, the high heating power and high wind speed characteristics of the hot air generator ensure rapid heat shrinking, helping to improve production efficiency. This design allows hot air to directly and concentratedly act on the top of the heat shrinking bag 7, accelerating the shrinking process of the top opening and improving the heat shrinking efficiency, especially suitable for production lines that require rapid heat shrinking. In terms of implementation effect, this design can significantly shorten the heat shrinking time and improve production speed.

[0034] In some embodiments, soft curtains are provided at the inlet 33 and the outlet 34 to seal and insulate the accommodation cavity 35. The inner cavity size of the heat shrinking box 3 should be as small as possible according to the size of the yarn ball to improve the insulation effect.

[0035] As Figure 2As shown, specifically, the hood mechanism 42 further includes an air inlet pipe 421 provided with an air inlet 421a; an air outlet pipe 422 in communication with the air inlet pipe 421, the air outlet pipe 422 including an inner pipe 422a and an outer pipe 422b, the inner pipe 422a and the outer pipe 422b being sleeved to form an annular air outlet channel 422c, the air inlet pipe 421 being in communication with one end of the annular air outlet channel 422c, and a plurality of air outlets 422 being arranged at the other end of the annular air outlet channel 422c and distributed along the annular direction of the annular air outlet channel 422c. The air inlet pipe 421 is a connecting channel between the hood mechanism 42 and the hot air machine 41, responsible for introducing the hot air generated by the hot air machine 41 into the interior of the hood mechanism 42. The air inlet 421a is arranged on the air inlet pipe 421 and is the entrance for the hot air to enter the hood mechanism 42. The air inlet pipe 421 is tightly connected with the air outlet of the hot air machine 41, ensuring that the hot air transmission is leak-free and maximizing the use of heat energy. The air outlet pipe 422 is composed of the inner pipe 422a and the outer pipe 422b, and the sleeved structure forms an annular air outlet channel 422c. This design allows the hot air to be evenly distributed along the annular channel after entering the air outlet pipe 422, and eventually blown out through the plurality of air outlets 423 arranged at the other end of the annular air outlet channel 422c. The space between the inner pipe 422a and the outer pipe 422b is the annular air outlet channel 422c, which ensures that the air volume is uniform during the distribution of the hot air from the air inlet pipe 421 to each air outlet 423, avoiding local overheating or overcooling and improving the uniformity and quality of the heat shrinkage of the top opening of the heat shrink bag. The annular air outlet channel 422c functions to uniformly guide the hot air to each air outlet 423, and each air outlet 423 is directly directed towards the heat shrink bag opening at the top of the yarn ball to be processed. The air outlets 423 are distributed along the annular direction of the annular air outlet channel 422c, ensuring that the hot air can cover the top opening of the heat shrink bag in a multi-point and uniform manner, achieving rapid and comprehensive heat shrinkage and strengthening the protection effect of the heat shrink bag on the yarn ball. Through the design of the annular air outlet channel, the hot air can be evenly blown out from each air outlet, avoiding local overheating or overcooling and ensuring the uniformity of the heat shrinkage of the heat shrink bag.

[0036] Specifically, the air outlet pipe 422 includes a first pipe section 4221 and a second pipe section 4222, the first pipe section 4221 communicates with the air inlet pipe 421, the first pipe section 4221 is a tapered section, the second pipe section 4222 is a cylindrical section, the small end of the tapered section communicates with the air inlet pipe 421, and the large end of the tapered section communicates with the second pipe section 4222. The design of the tapered section helps to diffuse and evenly distribute the hot air. When the hot air enters the tapered section from the small end of the air inlet pipe 421, it gradually expands to the large end of the tapered section, which enables the hot air to be evenly distributed in a larger space, providing favorable conditions for subsequent hot air distribution. After the hot air diffuses in the tapered section, it enters the cylindrical section, and the flow rate and pressure distribution are more uniform, which can ensure that the air volume and air speed of the hot air are consistent when reaching each air outlet 423, achieving uniform heat shrinking of the top opening of the heat shrink bag. The cylindrical second pipe section ensures uniform distribution of the hot air, and this combined design enables the heat shrinking device to adapt to different sizes of workpieces, improving the versatility and adaptability of the equipment. In terms of implementation effect, the combination of the tapered section and the cylindrical section not only ensures the initial concentration of the hot air but also ensures the uniform coverage of the hot air on the entire packaging piece.

[0037] Specifically, the lumen of the first pipe section 4221 gradually narrows in the direction away from the air inlet pipe 421. Such a design can further improve the concentration of the hot air, so that the hot air has a higher speed and temperature when reaching the top of the workpiece, thereby accelerating the shrinking of the top opening of the heat shrink bag, especially suitable for occasions that require rapid heat shrinking. In terms of implementation effect, the gradually narrowing lumen of the first pipe section can significantly improve the impact force of the hot air on the top of the heat shrink bag, accelerate the shrinking of the heat shrink bag, shorten the heat shrinking process time, and improve the production efficiency.

[0038] Specifically, the diameter of the inner wall surface of the second pipe section 4222 is greater than the diameter of the outer peripheral surface of the workpiece 6. From the projection angle from top to bottom, the inner wall surface of the second pipe section 4222 is arranged around the outer peripheral surface of the workpiece 6. This design ensures that the hot air can fully surround the workpiece, not only accelerating the shrinking of the top opening of the heat shrink bag, but also promoting the uniform shrinking of the entire heat shrink bag, improving the heat shrinking effect. In terms of implementation effect, the diameter design of the second pipe section ensures that the hot air can completely cover the workpiece, promoting the overall shrinking of the heat shrink bag and improving the tightness of the package.

[0039] Specifically, a plurality of air outlets 423 are arranged above and around the circumference of the workpiece 6; each air outlet 423 is provided with an air outlet opening 423a; the end of the air outlet pipe 422 away from the air inlet pipe 421 is provided with a plurality of openings, each opening corresponds to an air outlet 423, and the air outlet opening 423a of each air outlet 423 is arranged towards the workpiece 6. The air outlet is designed as a duckbill-shaped air outlet 423 inclined towards the inside of the workpiece 6, and the air outlet opening 423a is a slit towards the heat-shrinkable bag. This design ensures that hot air can be evenly distributed from the air outlet pipe 422 to each air outlet 423, forming a ring-shaped air outlet array around the workpiece 6 at the top of the air cap mechanism 42. The distribution of the air outlet 423 follows the circumference of the workpiece 6, ensuring that hot air can fully cover the top opening of the heat-shrinkable bag, achieving uniform heat shrinkage. The air outlet opening 423a on the air outlet 423 is designed to directly face the top heat-shrinkable bag opening of the workpiece 6. This direct alignment allows hot air to accurately act on the area that needs to be heat-shrunk, improving the efficiency and reliability of heat shrinkage.

[0040] As shown in Figure 3 Specifically, the outer peripheral wall of the heat-shrinkable box 3 includes an inner side wall 311 and an outer side wall 312, and the hot air channel 36 is formed between the inner side wall 311 and the outer side wall 312, one end of the hot air channel 36 communicates with the containing cavity 35, and the top of the heat-shrinkable box 3 is covered with a hot air box 5, the inside of the hot air box 5 communicates with the other end of the hot air channel 36. The hot air box 5 plays a role in reducing the noise of the industrial hot air machine, and is easy to disassemble for maintenance of the industrial hot air machine 41. This design can make full use of hot air, not only accelerating the shrinkage of the heat-shrinkable bag, but also maintaining the temperature inside the heat-shrinkable box, reducing energy waste, and is suitable for heat-shrinkable packaging production lines that need to work continuously for a long time. In terms of implementation effect, the design of the hot air channel and the hot air box can effectively utilize hot air, form a circulating heating system, reduce energy consumption, and at the same time maintain the stability of the temperature inside the heat-shrinkable box, improve the shrinkage speed and quality of the heat-shrinkable bag.

[0041] Specifically, the inner side wall 311 is provided with a plurality of air inlet holes 311a, and the hot air channel 36 communicates with the containing cavity 35 through the air inlet holes 311a. The design of the air inlet holes 311a allows the used hot air to flow back to the hot air box 5 through the side hot air channel 36, and is heated again by the industrial hot air machine 5 for recycling. This not only reduces the loss of hot air and energy consumption, but also reduces the starting frequency of the hot air machine, prolongs the service life of the equipment, and embodies the energy saving and economy of the device.

[0042] Specifically, the heat shrinking device further comprises a filtering assembly arranged at the plurality of air inlet holes 311a corresponding to the top end of the piece to be processed 6. The plurality of air inlet holes 311a are arranged on the inner side of the hot air channel 36, i.e. close to the top surface of the yarn ball, so as to facilitate the hot air blown out by the duckbill-shaped air outlet 423a to flow back to the air suction port of the industrial hot air blower 41 for recycling after passing through the bag opening of the heat shrinking bag 7. There are usually some fluff attached around the yarn ball, and the air inlet holes 311a have the function of preliminarily filtering the heat shrinking air. The arrangement of the filtering assembly can effectively filter out impurities in the hot air, prevent the fluff attached around the yarn ball from affecting the heat shrinking bag, and ensure the heat shrinking quality of the heat shrinking bag. The arrangement of the air inlet holes 311a corresponding to the top end of the piece to be processed 6 can ensure that the hot air is recycled from the hot air channel 36 in the shortest path after completing the heat shrinking positioning of the heat shrinking bag 7, preventing heat loss.

[0043] Specifically, the transmission mechanism 2 is a chain plate transmission mechanism or a belt transmission mechanism. The chain plate transmission mechanism or the belt transmission mechanism can stably convey the piece to be processed, ensuring the continuity and stability of the heat shrinking process, and being suitable for various types of production lines, thereby improving the automation degree and production efficiency of the production line. In terms of implementation effect, the chain plate or belt transmission mechanism can ensure the stable and continuous conveying of the piece to be processed, avoiding the situation that if a roller form is used, the bag opening of the heat shrinking bag 7 is pulled down due to winding, which causes the protection of the upper circumferential edge of the yarn ball by the heat shrinking bag 7 to be invalid; the chain plate conveying surface can also separate the heat shrinking box 3 from the space below the yarn ball transmission mechanism 2, which is conducive to reducing the heat loss of the hot air in the heat shrinking box 33.

[0044] Specifically, the outer side wall 312 is provided with thermal insulation materials to ensure the stability of the temperature in the hot air channel, reduce heat loss, and improve the utilization efficiency of heat energy. In the design of the thermal insulation materials of the heat shrinking device, rock wool, glass wool, polyurethane foam, calcium silicate board, aerogel, ceramic fiber or foam glass can be selected. These materials have the characteristics of low thermal conductivity, high temperature resistance, light weight and environmental protection, which can effectively maintain the stability of the internal temperature of the device, reduce energy consumption, and ensure efficient operation.

[0045] In the above embodiment, the pre-heat shrinking time of each piece to be processed 6 and its heat shrinking bag 7 is about 2 to 8 seconds, the heating power of the industrial hot air blower is about 3 KW, and the number of duckbill-shaped air outlets is 6. The above time, power, and number of air outlets can be adjusted according to the actual size of the piece to be processed 6 and the thickness of the material of the heat shrinking bag 7.

[0046] The hot air circulation path of the heat-shrinking device of the present application, when the heat-shrinking device is working, the hot air generated by the industrial hot air machine 41 is distributed to the duckbill-shaped air outlet 423a through the air cap mechanism 42, and the hot air blows around the bag opening of the heat-shrinking bag 7 on the top of the yarn ball, so that the part of the heat-shrinking bag 7 which is higher than the yarn ball is heat-shrunk and shaped, and is in a flange shape and is laid on the top surface of the yarn ball. The used hot air in the heat-shrinking box 3 enters the side hot air channel 36 through the air inlet hole 311a on the side of the heat-shrinking box 3, then enters the top hot air box 5, and is recycled to the industrial hot air machine 41 again. The hot air circulation is driven by the industrial hot air machine 41.

[0047] The control program of the heat-shrinking device, in order to adapt to the high frequency of the yarn ball entering and leaving the device, the transmission mechanism 2 and the industrial hot air machine 41 both need to be adapted to the frequent start-stop and interlocking control. After the yarn ball reaches the stop position, the industrial hot air machine 41 is started immediately, and after the preset heat-shrinking effect and time are reached, the industrial hot air machine 41 is stopped immediately, and at the same time, the yarn ball transmission mechanism 2 starts to send the yarn ball out of the heat-shrinking device.

[0048] Referring to Figure 4 , Figure 5 , the state of the yarn ball and the heat-shrinking bag 7 before and after the yarn ball and the heat-shrinking bag 7 pass through the heat-shrinking device for heat-shrinking, before pre-heat-shrinking, the yarn ball is placed in the heat-shrinking bag 7, and the bag opening of the heat-shrinking bag 7 is upright and slightly higher than the upper circular surface of the yarn ball. After heat-shrinking, the bag opening of the heat-shrinking bag 7 is partially and multi-point heat-shrunk and shaped, and the part of the bag opening blown by the hot air from the duckbill-shaped air outlet 423a is shrunk and laid on the circumference of the upper circular surface of the yarn ball, so that the heat-shrinking bag is fixed on the upper end surface of the yarn ball, and does not fall from the yarn ball in the subsequent conveying process.

[0049] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0050] The heat shrink device of the present application can fix the bag opening on the upper end surface of the yarn ball through the multi-point local heat shrink of the bag opening of the yarn ball by the hot air nozzles arranged on the top circumference of the yarn ball, so that the heat shrink bag 7 does not slide off in the subsequent conveying process, effectively protecting the quality of the yarn ball from being scratched and damaged. At the same time, the device has small thermal inertia, can be quickly started and pre-shrunk, and can adapt to the flow line production. In addition, the small air volume spot welding heat shrink and hot air recycling have obvious energy saving effect. By setting the air cap mechanism 42 on the top wall 32 of the heat shrink box 3, the hot air generated by the hot air machine 41 can be concentrated and uniformly blown to the top opening of the workpiece 6 to be processed, so that the top opening of the heat shrink bag 7 can be quickly and uniformly shrunk, improving the heat shrink effect and efficiency of the heat shrink bag 7. At the same time, by setting the hot air channel 36 on the outer peripheral wall of the heat shrink box 3, the hot air generated by the hot air machine 41 can be used to heat the inside of the heat shrink box 3, ensuring the temperature inside the heat shrink box 3, and further improving the heat shrink effect of the heat shrink bag 7. By setting the hot air channel 36 and the hot air box 5, the device realizes the recycling and recycling of hot air, significantly reduces the energy consumption of the hot air machine 41, improves the energy efficiency of the whole system, reduces the production cost and environmental impact. The rapid transmission capacity of the transmission mechanism 2 and the instant heating characteristics of the heat shrink assembly 4 enable the device to adapt to high-frequency yarn ball in and out, suitable for continuous flow line operation. This not only improves the production efficiency, but also ensures the stability of the heat shrink bag protecting the yarn ball, avoiding the sliding of the heat shrink bag in the subsequent conveying process. In addition, by setting the filter assembly, impurities in the hot air can be filtered out to ensure the heat shrink quality of the heat shrink bag 7. The heat shrink device of the present application has simple structure and convenient operation, which can effectively improve the heat shrink effect and efficiency of the heat shrink bag 7, and has wide application prospect. The precise heat shrink of the top opening of the heat shrink bag not only fixes the position of the bag opening, but also improves the adhesion of the bag opening and the edge of the upper end surface of the yarn ball, ensuring the complete protection of the yarn ball in the subsequent processing and conveying process, effectively preventing the yarn ball surface from being scratched or contaminated, and improving the product quality. The heat preservation design of the hot air box 5 and the use of the filter assembly reduce energy consumption.

[0051] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and in the above-described drawings are used only for distinguishing between similar objects and do not necessarily have to describe a specific order or sequence. It should be understood that data used in this way can be interchanged, where appropriate, so that the embodiments of the present application described herein can be carried out in other than the order illustrated or described herein.

[0053] The above only describes specific embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A heat shrinking device, characterized in that, include: A frame (1) is provided with a transmission mechanism (2), which is movably configured to convey a workpiece (6) covered with a heat shrink bag (7) along a first direction. Heat shrink box (3), the heat shrink box (3) and the transmission mechanism (2) enclose to form a receiving cavity (35), the receiving cavity (35) is used to receive the workpiece (6) to be processed by the transmission mechanism (2), the heat shrink box (3) is provided with an inlet (33) and an outlet (34) for the workpiece (6) to pass through along the first direction. The heat shrink assembly (4) is installed on the top wall (32) of the heat shrink box (3). The heat shrink assembly (4) includes a hot air blower (41) and a hood mechanism (42). The hot air blower (41) is located on the outside of the heat shrink box (3). At least part of the hood mechanism (42) is located inside the receiving cavity (35). The hood mechanism (42) includes an air inlet (421a) and a plurality of air outlets (423a) that are interconnected. The air inlet (421a) is connected to the hot air blower (41). The plurality of air outlets (423a) are located above the workpiece (6) to be processed. Each air outlet (423a) is located facing the top of the workpiece (6) to blow hot air onto the top opening of the heat shrink bag fitted on the outside of the workpiece (6).

2. The heat shrinking device according to claim 1, characterized in that, The hood mechanism (42) also includes: An air inlet pipe (421) is provided with an air inlet (421a). An air outlet duct (422) is connected to an air inlet duct (421). The air outlet duct (422) includes an inner pipe (422a) and an outer pipe (422b). The inner pipe (422a) and the outer pipe (422b) are fitted together to form an annular air outlet channel (422c). The air inlet duct (421) is connected to one end of the annular air outlet channel (422c). The plurality of air outlets (423a) are located at the other end of the annular air outlet channel (422c) and distributed along the annular direction of the annular air outlet channel (422c).

3. The heat shrinking device according to claim 2, characterized in that, The air outlet pipe (422) includes a first pipe section (4221) and a second pipe section (4222). The first pipe section (4221) is connected to the air inlet pipe (421). The first pipe section (4221) is a conical section, and the second pipe section (4222) is cylindrical. The small end of the conical section is connected to the air inlet pipe (421), and the large end of the conical section is connected to the second pipe section (4222).

4. The heat shrinking device according to claim 3, characterized in that, Along the direction away from the air inlet pipe (421), the cavity of the first pipe section (4221) gradually narrows.

5. The heat shrinking device according to claim 3, characterized in that, The diameter of the inner wall of the second pipe section (4222) is larger than the diameter of the outer circumference of the workpiece (6) to be processed.

6. The heat shrinking device according to claim 2, characterized in that, Multiple air outlets (423) are arranged above the workpiece (6) and distributed around the workpiece (6) circumferentially; each air outlet (423) is provided with an air outlet (423a); wherein, The air outlet pipe (422) has multiple openings at the end away from the air inlet pipe (421), and each opening is provided with an air outlet component (423). The air outlet (423a) of each air outlet component (423) is directed toward the workpiece (6) to be processed.

7. The heat shrink apparatus according to any one of claims 1 to 6, characterized in that, The outer peripheral wall of the heat shrink box (3) includes an inner side wall (311) and an outer side wall (312). A hot air channel (36) is formed between the inner side wall (311) and the outer side wall (312). One end of the hot air channel (36) is connected to the receiving cavity (35). A hot air box (5) is provided on the top of the heat shrink box (3). The interior of the hot air box (5) is connected to the other end of the hot air channel (36).

8. The heat shrinking device according to claim 7, characterized in that, The inner wall (311) is provided with a plurality of air inlets (311a), and the hot air channel (36) is connected to the receiving cavity (35) through the air inlets (311a).

9. The heat shrinking device according to claim 8, characterized in that, The heat shrinking device further includes a filter assembly disposed at one of the plurality of air inlets (311a); and / or, the plurality of air inlets (311a) are disposed at the top of the workpiece (6) to be processed.

10. The heat shrink apparatus according to any one of claims 1 to 6, characterized in that, The transmission mechanism (2) is a chain plate transmission mechanism or a belt transmission mechanism.

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