A melting-proof cutting bed for cutting multi-layer fabrics

Abstract

The present invention discloses an anti-melting cutting bed for cutting multi-layer fabrics, belonging to the technical field of textile machinery. The anti-melting cutting bed of the present invention comprises an automatic cloth stacking mechanism and a self-cooling anti-melting cutting knife. A cutting platform is provided at the bottom of the self-cooling anti-melting cutting knife. The automatic cloth stacking mechanism is used to fold the fabric and send it to the cutting platform. The self-cooling anti-melting cutting knife comprises a knife body, a knife holder for cooling the knife body, the knife holder comprises a knife holder body and a cooling mechanism, the maximum operating temperature difference between the knife body and the knife holder body is 30-35°C, the cooling mechanism comprises a cooling part, and the cooling part is formed by casting a low-melting-point alloy having a melting point temperature T0 of 45-50°C. The anti-melting cutting bed of the present invention realizes automatic cloth stacking and cutting of multi-layer fabrics at one time, and the anti-melting cutting knife adopts a low-melting-point alloy phase change endothermic cooling efficiency to greatly improve, avoiding browning and adhesion of the edge of the fabric, and the phase change endothermic process occurs in the knife holder, and the temperature control process will not contaminate the fabric.

Description

Technical Field

[0001] The invention belongs to the technical field of textile machinery, and more specifically, relates to an anti-melting cutting bed for cutting multi-layer cloth. Background Art

[0002] The whole roll of fabric needs to be cut into multiple pieces of the same length before sewing. There are two main ways to cut existing fabrics. One is to use laser for automatic cutting. Although this method can make accurate and fast cuts, it is easy to burn the fabric and waste resources. The other is to use a cutter to cut. When cutting multiple layers of fabric continuously and frequently, the frequent friction between the blade and the fabric can easily cause the temperature of the cutter to be too high, especially for synthetic fibers. High temperature can easily cause the edges of the garments to brown and stick together, and can also cause the blade to become contaminated. This not only affects the subsequent cutting, but the adhesion of multiple layers of fabric also brings a lot of trouble to the later clothing production.

[0003] In order to solve the problem that the fabric is damaged due to excessive temperature when the cutting knife of the cutting table performs a large amount of cutting, relevant technical solutions have been disclosed in the prior art, such as patent application number: 2016112255778, application date: December 27, 2016, and the name of the invention is: a cutting knife cooling device for a cutting machine. The application arranges a blowing device around the guide support rod, and the blowing device includes an annular blowing pipe and an air collecting tube surrounding the outside of the blowing pipe. The annular blowing pipe is fixed to the guide support rod by a fixing frame, and a plurality of blowing holes are opened on the side of the annular blowing pipe close to the air collecting tube, which can realize continuous cooling and is safe and reliable to use. However, the cooling efficiency of the device is not high, and it is more suitable for cutting low-melting-point materials. For example, patent application number: 2014103070152, application date: June 30, 2014, the name of the invention is: cutting knife cooling mechanism for cutting table; in the cutting knife cooling mechanism for cutting table, cooling gas enters the air inlet hole and the annular groove in sequence through the air inlet on the pressure plate, so as to directly blow cold air to the cutting knife inserted in the through hole to cool it down, so as to achieve the effect of cooling the cutting knife, the mechanism has high cooling accuracy and high cooling efficiency, and the cooling gas circulates inside the cooling mechanism, so the loss of cooling gas is very small, so as to reduce the waste of resources and reduce the cooling cost.

[0004] It can be seen that the above-mentioned cutting machines and cutting knives are cooled by an external independently arranged cooling mechanism. The structure of this external independently arranged cooling mechanism is complex. When performing a large amount of cutting, it is still easy to cause the temperature of the tool to be too high, affecting the cutting effect. Moreover, the external cooling mechanism adopts air cooling to cool the cutting knife. When the cold air meets the high-temperature cutting knife, water vapor will be generated to pollute the fabric. Direct water spray cooling will also cause fabric pollution.

[0005] In view of the disadvantage that the above-mentioned external cooling mechanism is easy to contaminate the cutter, the prior art also discloses a related technical solution, patent application number: 2016105144836, application date: July 2, 2016, the invention is named: a cutter with a cooling coating; the solution discloses a cutter with a cooling coating, the cutter is used for cutting low-melting-point fabrics, and the surface of the cutter is coated with a magnesium oxide or aluminum oxide coating; in addition, a plurality of heat dissipation fins arranged in a multi-ring annular shape are arranged on the surface of the cutter, and the surface of the heat dissipation fins is also coated with a magnesium oxide or aluminum oxide coating. The cutter with a cooling coating has a relatively simple structure, convenient cooling, and the cutter can be continuously cooled. Compared with the traditional external cooling mechanism for cooling, the solution is simple and easy to implement in setting the coating cooling process on the surface of the cutter, but after cutting a large amount of fabrics, the relatively thin coating itself will lose its cooling effect due to wear, shedding, etc. Therefore, the coating on the cutter cannot be reused, and the re-preparation of the coating increases the production cost, so further improvement is needed.

[0006] In summary, how to overcome the shortcomings of the prior art that cutting multiple layers of fabric at one time causes high cutter temperature and the cooling process easily contaminates the fabric is a technical problem that urgently needs to be solved in the prior art. Summary of the invention

[0007] 1. Technical problem to be solved by the invention

[0008] The present invention overcomes the problem of fabric contamination caused by cooling the cutting blade of a cutting table by an external cooling mechanism in the prior art, and provides an anti-melting cutting table for cutting multi-layer fabrics, which can realize automatic fabric stacking and cutting of multiple layers of fabrics at one time. The anti-melting cutting blade adopts a low-melting-point alloy phase change heat absorption cooling efficiency which is greatly improved, and can avoid the edge of the fabric from being scorched, stuck, etc. The phase change heat absorption process occurs in the blade holder, and the temperature control process will not contaminate the fabric.

[0009] 2. Technical solution

[0010] In order to achieve the above object, the technical solution provided by the present invention is:

[0011] The invention discloses an anti-melting cutting bed for cutting multi-layer cloth, comprising an automatic cloth folding mechanism and a self-cooling anti-melting cutting knife, wherein a cutting platform is arranged at the bottom of the self-cooling anti-melting cutting knife, the automatic cloth folding mechanism is used to fold the cloth and send the cloth to the cutting platform for cutting, the self-cooling anti-melting cutting knife comprises a knife body, a knife holder for cooling the knife body, the knife holder comprises a knife holder body and a cooling mechanism, the maximum operating temperature difference between the knife body and the knife holder body is 30-35°C, the cooling mechanism comprises a cooling part, and the cooling part is formed by casting a low melting point alloy having a melting point temperature T0 of 45-50°C.

[0012] As a further improvement of the present invention, the automatic cloth stacking mechanism includes a cloth spreading device for installing a cloth roller and delivering the cloth, a cloth pressing device for locking the cloth arranged on the cloth stacking platform, and a cloth stacking mechanism for folding the cloth. The cloth stacking mechanism is arranged between a group of cloth pressing devices and folds the cloth and lays it on the cloth stacking platform by moving back and forth.

[0013] As a further improvement of the present invention, the cloth stacking mechanism includes a group of cloth stacking wheels with opposite rotation directions for clamping the cloth to make it laid on the cloth stacking platform. The cloth stacking wheels are fixed to the sliding base through the cloth stacking rods, and the sliding base is driven to slide by the second driving mechanism.

[0014] As a further improvement of the present invention, the cloth stacking wheel includes a first cloth stacking wheel and a second cloth stacking wheel, the cloth stacking rod includes a first cloth stacking rod for fixing the first cloth stacking wheel and a second cloth stacking rod for fixing the second cloth stacking wheel, and the first cloth stacking rod and the second cloth stacking rod are locked by a fastening device.

[0015] As a further improvement of the present invention, the tool holder body includes outer cooling walls, cooling ridges between the cooling walls and a cooling seat at the bottom, and a mold cavity for casting the cooling part is formed between the cooling ridges and the cooling walls.

[0016] As a further improvement of the present invention, the blade body includes a blade portion and a blade seat for fixing the blade portion on the cooling seat, and the blade seat is composed of multiple rows of transversely arranged heat transfer fins.

[0017] As a further improvement of the present invention, the cooling mechanism also includes a heat exchange tube arranged in the mold cavity. When the cooling wall temperature of the tool holder body is 3~5°C higher than the melting point temperature T0 of the low melting point alloy, cooling medium is introduced into the heat exchange tube.

[0018] As a further improvement of the present invention, side sealing doors for installing heat exchange tubes are arranged on both sides of the tool holder body, and a second sealing gasket is arranged between the side sealing door and the cooling part.

[0019] As a further improvement of the present invention, the self-cooling anti-melting cutting knife further comprises a knife crown portion arranged on the top of the knife holder body, and a first sealing gasket is arranged between the knife crown portion and the cooling portion.

[0020] As a further improvement of the present invention, the crown portion is connected to a lifting device arranged on the top of the knife, and the lifting device is driven to rise and fall by the first driving mechanism.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the technical solution provided by the present invention has the following significant effects:

[0023] (1) The anti-melting cutting bed for cutting multi-layer fabrics of the present invention can realize automatic stacking of fabrics and cut multi-layer fabrics at one time. The anti-melting cutting blade has a self-cooling function. Compared with the single heat conduction type water cooling or air cooling, the cooling efficiency is greatly improved by using the phase change heat absorption of low melting point alloy, which can avoid the phenomenon of browning and adhesion of the edge of the fabric. Moreover, the phase change heat absorption process occurs in the blade holder, and the temperature control process will not cause pollution to the fabric.

[0024] (2) In the present invention, a melting-proof cutting bed for cutting multi-layer fabrics, the cooling mechanism of the melting-proof cutting knife further comprises a heat exchange tube arranged in the mold cavity. When the temperature of the knife holder body is 3-5°C higher than the melting point temperature T0 of the low-melting-point alloy, the phase change heat absorption of the low-melting-point alloy is converted into a single heat conduction heat absorption. A cooling medium is introduced into the heat exchange tube for secondary heat exchange, thereby further improving the heat exchange efficiency and reducing the temperature of the blade.

[0025] (3) The present invention provides an anti-melting cutting table for cutting multi-layer fabrics. The fabric spreading device of the automatic fabric stacking mechanism serves as a free end to release the fabric. The fabric stacking mechanism disposed between the fabric pressing devices moves back and forth along the fabric conveying direction. The fabric is fixed by the fabric pressing device to achieve a single folding of the fabric. This process is repeated to achieve multiple folding of the fabric, thereby greatly reducing the labor cost of manual folding and improving the fabric stacking efficiency.

[0026] (4) The present invention provides an anti-melting cutting table for cutting multi-layer cloth. The distance between the first cloth stacking rod and the second cloth stacking rod is adjusted by a fastening device to achieve control of the clamping stress of the cloth by the first cloth stacking wheel and the second cloth stacking wheel, so as to ensure that the cloth can be driven to move left and right while the cloth can be dropped to be laid on the cloth stacking platform, thereby adjusting the cloth laying effect.

[0027] (5) The present invention provides an anti-melting cutting bed for cutting multi-layer fabrics, wherein side sealing doors for installing heat exchange tubes are arranged on both sides of the knife holder body, a second sealing gasket is arranged between the side sealing door and the cooling part, and a first sealing gasket is arranged between the knife crown part and the cooling part. The first / second sealing gaskets are both made of high-temperature resistant elastic rubber material to ensure the sealing of the cooling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an anti-melting cutting table for cutting multi-layer fabrics of the present invention;

[0029] Figure 2 It is a schematic longitudinal section diagram of the knife body and the knife holder body in the present invention;

[0030] Figure 3 It is a longitudinal cross-sectional schematic diagram of the anti-melting cutting knife in the present invention;

[0031] Figure 4It is a cross-sectional schematic diagram of the anti-melting cutting knife in the present invention;

[0032] Figure 5 It is a schematic structural diagram of the side sealing door in the present invention.

[0033] Reference numerals:

[0034] 100, blade body; 110, blade portion; 111, blade seat;

[0035] 200, tool holder; 210, tool holder body; 211, cooling ridge; 212, cooling wall; 213, cooling seat; 220, cooling mechanism; 221, cooling part; 222, heat exchange tube; 230, tool crown; 231, first sealing gasket; 240, side sealing door; 241, second sealing gasket;

[0036] 300, lifting device; 310, telescopic rod; 311, presser foot;

[0037] 400. A first driving mechanism;

[0038] 500, automatic folding mechanism; 510, spreading device; 511, cloth roller; 520, folding mechanism; 521, first folding rod; 522, first folding wheel; 523, second folding rod; 524, second folding wheel; 525, fastening device; 526, sliding base; 527, second driving mechanism; 530, cloth pressing device;

[0039] 600, the stacking platform; 610, the third driving mechanism; 700, the cutting platform; 800, the unloading platform. DETAILED DESCRIPTION

[0040] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0041] Example 1

[0042] In order to improve processing efficiency, cutting tables in the prior art usually cut multiple layers of fabric at a time. When cutting multiple layers of fabric continuously and frequently, the frequent friction between the blade and the fabric can easily cause the temperature of the cutter to be too high. Especially for synthetic fibers, high temperature can easily cause the edges of the garment pieces to become brown and stick together, and can also cause the blade to become dirty. This not only affects the subsequent cutting, but also the sticking of multiple layers of fabric can cause a lot of trouble for the later production of clothing.

[0043] The safe temperature that common fabrics in the prior art can withstand is around 130°C. For example, the ironing temperature of acrylic fiber is below 130°C. The melting point of chemical fiber cloth is relatively low, and it may burn at 130°C. The ignition point of cotton is about 150°C, the ignition point of cloth is 270°C to 300°C, and the ignition point of general cotton cloth is between 500°C and 700°C. It can be seen that in order to ensure that most fabrics are not damaged or destroyed due to excessively high cutter temperatures during cutting, the cutter temperature should be controlled within a certain safe temperature range. The cutter is usually made of high-speed steel. During the process of the cutter cutting the fabric, the temperature of the cutter body is lower than the fabric temperature, and the temperature difference range is about 50°C. Therefore, if the cutter temperature can be controlled below 80°C, it will usually not cause damage to the fabric.

[0044] In the prior art, in order to control the temperature of the cutter, an external cooling mechanism is usually used, especially water cooling or air cooling spraying, which is the most common. This method inevitably causes the problem of fabric pollution, which brings a production burden to the subsequent processing of the fabric into finished products. The present invention avoids the pollution problem caused by the external cooling source by setting a temperature control mechanism in the cutter body structure.

[0045] Combination Figures 1 to 3 In this embodiment, an anti-melting cutting bed for cutting multi-layer cloth includes an automatic cloth stacking mechanism 500 and a self-cooling anti-melting cutting knife. A cutting platform 700 is provided at the bottom of the self-cooling anti-melting cutting knife. The automatic cloth stacking mechanism 500 is used to fold the cloth and send it to the cutting platform 700 for cutting. The self-cooling anti-melting cutting knife includes a knife body 100 and a knife holder 200 for cooling the knife body 100. The knife holder 200 includes a knife holder body 210 and a cooling mechanism 220. The maximum operating temperature difference between the knife body 100 and the knife holder body 210 is 30-35°C. The cooling mechanism 220 includes a cooling part 221, and the cooling part 221 is formed by casting a low melting point alloy having a melting point temperature T0 in the range of 45-50°C.

[0046] The low melting point alloy referred to in this embodiment refers to a fusible alloy with a melting point temperature range of 45-50°C, and usually uses a certain proportion of bismuth, cadmium, tin, lead, dysprosium, indium and other elements as the main components to form different eutectic low melting point alloys. Preferably, in order to improve the sensitivity of the low melting point alloy to temperature changes, the low melting point alloy in this embodiment includes the following components in mass percentage: 45% Bi, 23% Pb, 8% Sn, 5% Cd, 19% In, and the melting point temperature T0 of the alloy formed is 47°C.

[0047] Specifically in this embodiment, the tool holder body 210 includes an outer cooling wall 212, a cooling ridge 211 between the cooling walls 212, and a cooling seat 213 at the bottom. A mold cavity for casting a cooling portion 221 is formed between the cooling ridge 211 and the cooling wall 212. The tool body 100 includes a blade portion 110 and a blade seat 111 for fixing the blade portion 110 on the cooling seat 213. The blade seat 111 is composed of a plurality of rows of transversely arranged heat transfer sheets to form a "W"-shaped structure, so as to be mutually buckled and fastened with the cooling seat 213 and ensure close heat transfer. The tool holder 200 is designed with a cooling ridge 211 to better improve the heat exchange effect between the tool holder body 210 and the low melting point alloy.

[0048] In this embodiment, the maximum operating temperature difference between the blade body 100 and the blade holder body 210 is 30-35°C, which specifically means that the temperature of the blade portion 110 used for cutting cloth during operation is usually 30-35°C higher than the cooling wall 212 of the blade holder 200. Specifically, when the temperature of the blade portion 110 is higher than 80°C, the temperature of the cooling wall 212 is higher than 45-50°C, reaching the melting point temperature of the alloy filled in the mold cavity. At this time, the low-melting-point alloy absorbs heat and melts, and a phase change occurs.

[0049] It is worth emphasizing that the phase change process of the low-melting-point alloy in the present embodiment is approximately an isothermal process, accompanied by the absorption of a large amount of heat. Compared with the single heat conduction type water cooling or air cooling, the heat absorption and cooling efficiency of the low-melting-point alloy phase change is greatly improved, which can prevent the burns to the cloth caused by the high temperature caused by frequent friction of the tool when cutting a large amount of cloth. Moreover, the phase change process occurs in the tool holder 200, which will not affect the cutting of the cloth, and avoids the pollution problem caused by water cooling or air cooling.

[0050] Furthermore, in order to improve the heat transfer efficiency of the tool holder 200, the tool holder body 210 in this embodiment is made of pure copper, and its wall thickness b is 5-8 mm, the cavity depth w is 100-150 mm, and the length l of the blade portion 110 is 65-75 mm. In this embodiment, the tool holder body 210 is made of pure copper, which has good thermal conductivity. On the one hand, it can improve the heat exchange efficiency, and on the other hand, it can make the surface temperature distribution of the cooling wall 212 uniform, which is conducive to improving the accuracy of the temperature difference measurement between the blade portion 110 and the cooling wall 212.

[0051] The anti-melting cutting bed for cutting multi-layer cloth in the present embodiment can cut 100 to 200 layers of cloth at a time while realizing automatic cloth stacking, and the anti-melting cutting knife has a self-cooling function and high cooling efficiency, which can avoid the browning and adhesion of the edges of the cloth, and the temperature control process will not cause pollution to the cloth.

[0052] Example 2

[0053] The present embodiment is a melt-proof cutting table for cutting multiple layers of cloth, and its structure is basically the same as that of the first embodiment. Furthermore, the automatic cloth stacking mechanism 500 in the present embodiment includes a cloth spreading device 510 for installing a cloth roller 511 and delivering cloth, a cloth pressing device 530 for locking the cloth provided on the cloth stacking platform 600, and a cloth stacking mechanism 520 for folding the cloth. The cloth stacking mechanism 520 is provided between a group of cloth pressing devices 530 and folds the cloth and lays it on the cloth stacking platform 600 by moving back and forth.

[0054] Specifically, the stacking platform 600 and the cutting platform 700 are arranged on the same horizontal line. The same horizontal line referred to here means that the two are arranged in the same direction. Preferably, the cutting platform 700 is slightly lower than the stacking platform 600 by about 3 mm, so that the third driving mechanism 610 can drive the stacking platform 600 to transport the stacked multi-layer cloth to the cutting platform 700, thereby achieving a smooth transition of the cloth between different platforms, reducing cloth wrinkles, and facilitating subsequent cutting to obtain multi-layer cloth with a smooth edge.

[0055] In the prior art, cloth is usually folded manually, which is an operation method with extremely low efficiency and uneven folding. In this embodiment, a spreading device 510, a cloth stacking mechanism 520 and a cloth pressing device 530 are arranged in parallel along the conveying direction of the cloth, wherein the cloth pressing device 530 is used as a fixed end to lock the cloth, and the spreading device 510 is used as a free end to release the cloth. The cloth stacking mechanism 520 arranged between the cloth pressing devices 530 moves back and forth along the conveying direction of the cloth. When the cloth stacking mechanism 520 moves to the cloth pressing device 530, the cloth pressing device 530 automatically lifts up and fixes the cloth, thereby realizing one folding of the cloth. This is repeated to realize multiple folding of the cloth.

[0056] Specifically in this embodiment, the cloth stacking mechanism 520 includes a group of cloth stacking wheels with opposite rotation directions, which are used to clamp the cloth to make it laid on the cloth stacking platform 600. The cloth stacking wheels are fixed to the sliding base 526 through the cloth stacking rod. The sliding base 526 is driven to slide by the second driving mechanism 527. When the second driving mechanism 527 drives the sliding base 526 to move to the vicinity of the spreading device 510, the cloth pressing device 530 can be used to fix the cloth.

[0057] Preferably, in this embodiment, the cloth stacking rod comprises a first cloth stacking rod 521 for fixing the first cloth stacking wheel 522 and a second cloth stacking rod 523 for fixing the second cloth stacking wheel 524 . The first cloth stacking rod 521 and the second cloth stacking rod 523 are locked by a fastening device 525 .

[0058] Since cloths of different materials and sizes have different weights, it is necessary to control the shear stress and / or normal stress between the first cloth stacking wheel 522 and the second cloth stacking wheel 524 to clamp the cloth, so as to ensure that the cloth can be driven to move left and right while being able to fall to be laid on the cloth stacking platform 600. Therefore, in this embodiment, the first cloth stacking wheel 522 and the second cloth stacking wheel 524 control the clamping stress of the cloth by adjusting the distance between the first cloth stacking rod 521 and the second cloth stacking rod 523 through the fastening device 525, so as to adjust the cloth laying effect.

[0059] Example 3

[0060] The present embodiment is a melt-proof cutting bed for cutting multi-layer fabrics, and its structure is basically the same as that of the first embodiment. Furthermore, the cooling mechanism 220 in the present embodiment also includes a heat exchange tube 222 arranged in the mold cavity. When the temperature of the cooling wall 212 of the tool holder body 210 is 3 to 5°C higher than the melting point temperature T0 of the low-melting-point alloy, a cooling medium is introduced into the heat exchange tube 222.

[0061] Specifically in this embodiment, the melting point temperature T0 of the low melting point alloy is 47°C. When the temperature of the tool holder body 210 is 50-52°C, cooling water is introduced into the heat exchange tube 222 to achieve heat exchange of the low melting point alloy. Since the phase change heat absorption process of the low melting point alloy is similar to the isothermal process, it absorbs a large amount of heat without causing the temperature to rise rapidly, and then the phase change heat absorption is converted into a single heat conduction heat absorption, and the heat exchange efficiency is reduced at this time.

[0062] Therefore, in order to further improve the heat exchange efficiency, when the temperature of the blade holder body 210 is slightly higher than the melting point temperature T0, the phase change heat exchange is completed, and cooling water is introduced into the heat exchange tube 222 for secondary heat exchange. The temperature of the cooling water is equivalent to the temperature of the ice-water mixture, thereby ensuring the cooling efficiency of the blade holder 200 on the blade body 100. Specifically, when the temperature of the blade holder body 210 is lower than 10°C, the heat exchange is stopped, and this is repeated to ensure that the temperature of the blade portion 110 is not higher than 80°C, so as to avoid melting and burning of the cut fabric.

[0063] Example 4

[0064] Combination Figure 4 and Figure 5 The present embodiment is a melt-proof cutting bed for cutting multi-layer fabrics, and its structure is basically the same as that of Embodiment 2. Furthermore, the heat exchange tube 222 in the present embodiment is made of pure copper, and side sealing doors 240 for installing the heat exchange tube 222 are arranged on both sides of the tool holder body 210 in the present embodiment. The heat exchange tube 222 in the present embodiment is arranged equidistantly up and down in a direction perpendicular to the blade portion 110.

[0065] By arranging multiple groups of heat exchange tubes 222 arranged in parallel in the mold cavity, the conduction heat exchange efficiency can be further improved, the temperature of the blade portion 110 can be reduced, and the integrity of the cut fabric can be guaranteed. Specifically in this embodiment, the side sealing door 240 is provided with a mounting hole for the heat exchange tube 222 to pass through. In order to prevent the low melting point alloy from melting and overflowing, a second sealing gasket 241 is arranged between the side sealing door 240 and the cooling portion 221. The second sealing gasket 241 is made of a high temperature resistant elastic rubber material, and the gap between the heat exchange tube 222 and the side sealing door 240 can be further filled with a heat resistant thermal conductive glue to ensure the sealing of the cooling mechanism 220.

[0066] In addition, the anti-melting cutting knife of this embodiment also includes a knife crown portion 230 arranged at the top of the knife holder body 210, and a first sealing gasket 231 is arranged between the knife crown portion 230 and the cooling portion 221. The first sealing gasket 231 is made of high temperature resistant material, and the knife crown portion 230 is connected to a lifting device 300 arranged on its top, and the lifting device 300 is driven to lift and lower by a first driving mechanism 400.

[0067] Specifically, in this embodiment, the lifting device 300 includes a fixed rod for fixing the anti-melting cutter and a presser foot 311 for fixing the cloth. A telescopic rod 310 is arranged between the fixed rod and the presser foot 311. When the folded cloth is sent to the cutting platform 700, the presser foot 311 can be lowered by using the telescopic rod 310 to fix the cloth. At this time, the first driving mechanism 400 is used to drive the lifting device 300 to drive the anti-melting cutter to cut the cloth downward, which can ensure that the cutting edge is flush and the cloth does not have wrinkles.

[0068] In addition, the anti-melting cutting table for cutting multi-layer fabrics of this embodiment also includes a material unloading platform 800, which is arranged in the same direction as the cutting platform 700 and the cloth stacking platform 600. The material unloading platform 800 is used to place the fabric to be cut, or to store the cut fabric for use in the next processing step.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-melting cutting machine for cutting multi-layer fabrics, characterized in that: The invention comprises an automatic cloth folding mechanism (500) and a self-cooling anti-melting cutting knife, wherein a cutting platform (700) is provided at the bottom of the self-cooling anti-melting cutting knife, wherein the automatic cloth folding mechanism (500) is used to fold cloth and send the cloth to the cutting platform (700) for cutting, wherein the self-cooling anti-melting cutting knife comprises a knife body (100), a knife holder (200) for cooling the knife body (100), wherein the knife holder (200) comprises a knife holder body (210) and a cooling mechanism (220), wherein the maximum operating temperature difference between the knife body (100) and the knife holder body (210) is 30-35°C, and wherein the cooling mechanism (220) comprises a cooling part (221), wherein the cooling part (221) is formed by casting a low melting point alloy having a melting point temperature T0 of 45-50°C; The tool holder body (210) comprises an outer cooling wall (212), a cooling ridge (211) located between the cooling walls (212), and a cooling seat (213) at the bottom, wherein a mold cavity for casting the cooling portion (221) is formed between the cooling ridge (211) and the cooling wall (212); The blade body (100) comprises a blade portion (110) and a blade seat (111) for fixing the blade portion (110) on the cooling seat (213), wherein the blade seat (111) is composed of a plurality of rows of heat transfer plates arranged transversely; The cooling mechanism (220) further comprises a heat exchange tube (222) arranged in the mold cavity, and when the temperature of the cooling wall (212) of the tool holder body (210) is 3-5° C. higher than the melting point temperature T0 of the low melting point alloy, a cooling medium is introduced into the heat exchange tube (222).

2. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 1, characterized in that: The automatic cloth stacking mechanism (500) comprises a cloth spreading device (510) for installing a cloth roller (511) and delivering cloth, a cloth pressing device (530) arranged on a cloth stacking platform (600) for locking the cloth, and a cloth stacking mechanism (520) for folding the cloth, wherein the cloth stacking mechanism (520) is arranged between a group of cloth pressing devices (530) and folds the cloth and lays it on the cloth stacking platform (600) by moving back and forth.

3. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 2, characterized in that: The cloth stacking mechanism (520) comprises a group of cloth stacking wheels rotating in opposite directions, which are used to clamp and press the cloth so that it is laid on the cloth stacking platform (600); the cloth stacking wheels are fixed to a sliding base (526) via a cloth stacking rod; and the sliding base (526) is driven to slide by a second driving mechanism (527).

4. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 3, characterized in that: The cloth stacking wheels comprise a first cloth stacking wheel (522) and a second cloth stacking wheel (524); the cloth stacking rods comprise a first cloth stacking rod (521) for fixing the first cloth stacking wheel (522) and a second cloth stacking rod (523) for fixing the second cloth stacking wheel (524); the first cloth stacking rod (521) and the second cloth stacking rod (523) are locked by a fastening device (525).

5. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 4, characterized in that: Side sealing doors (240) for installing the heat exchange tubes (222) are arranged on both sides of the tool holder body (210), and a second sealing gasket (241) is arranged between the side sealing door (240) and the cooling part (221).

6. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 5, characterized in that: The self-cooling anti-melting cutting knife further comprises a knife crown portion (230) arranged on the top of the knife holder body (210), and a first sealing gasket (231) is arranged between the knife crown portion (230) and the cooling portion (221).

7. The anti-melting cutting machine for cutting multi-layer fabrics according to claim 6, characterized in that: The crown portion (230) is connected to a lifting device (300) arranged on the top thereof, and the lifting device (300) is driven to rise and fall by a first driving mechanism (400).

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