A hot melt blower for laminating sound insulation cotton and a laminating method thereof

Abstract

The present invention relates to a hot melt blower for laminating sound insulation cotton and a laminating method thereof, belonging to the technical field of laminating machines, comprising an assembly line, a hot air gun group and a traction device, the hot air gun group comprising a first hot air gun, a second hot air gun and a connecting plate, the connecting plate being mounted on the top of one end of the assembly line, the first hot air gun and the second hot air gun being symmetrically arranged at the two ends of the connecting plate, respectively, the first hot air gun and the second hot air gun being vertically arranged, the spacing between the first hot air gun and the second hot air gun being equal to the width of the sound insulation cotton, the first hot air gun and the second hot air gun of the present scheme respectively perform hot melt treatment on the two ends of the sound insulation cotton, respectively adhere the two sides of the bonding film to the two sides of the top of the sound insulation cotton, and by hot melting, the two sides of the bonding film are hot melted, and then the two sides of the bonding film are respectively adhered to the two side surfaces of the sound insulation cotton, so that the bonding film is bonded to the sound insulation cotton.

Description

Technical Field

[0001] The invention belongs to the technical field of laminating machines, and in particular relates to a hot melt blower and a laminating method thereof for laminating sound insulation cotton. Background Art

[0002] After the sound insulation cotton is produced, it is often necessary to coat the surface of the sound insulation cotton to prepare for the next process. In order to facilitate the coating treatment of the sound insulation cotton, existing factories are equipped with special coating equipment to coat the surface of the sound insulation cotton.

[0003] For example, the utility model patent with patent authorization announcement number: CN207172969U discloses a laminating machine glue head device and a ready-to-coat laminating machine comprising the same. The laminating machine glue head device includes a glue pipe, a glue container, a control valve, a nozzle plate, a nozzle, a groove and a glue pump; a plurality of glue nozzles, a plurality of grooves and a plurality of glue channels are integrated on the nozzle plate, the glue nozzle is located on the nozzle plate, the glue nozzle is connected to the control valve through the glue channel, the control valve is connected to the glue pump through the glue pipe, and the glue pump is connected to the glue container.

[0004] Based on the search of patent authorization announcement numbers and the shortcomings found therein:

[0005] The existing lamination treatment of sound insulation cotton is to manually apply glue on the laminating film to achieve lamination of the laminating film on the sound insulation cotton. The next step is high-temperature treatment. At this time, the film set on the sound insulation cotton will dissolve into glue due to the high temperature, which is convenient for the next two materials of cotton to be laminated to each other. Since the existing lamination treatment is achieved by viscose, this setting causes the film set on the sound insulation cotton to dissolve into glue at high temperature, which will come into contact with the original viscose. The chemical compositions of the two glues are incompatible, resulting in a decrease in the bonding performance, which leads to the problem that the next two materials of cotton are not firmly adhered to each other. Summary of the invention

[0006] In order to solve the problem that after the existing laminating equipment has laminated the sound insulation cotton, when the sound insulation cotton is subjected to high-temperature treatment in the next process, the film provided on the sound insulation cotton will be dissolved into glue at high temperature, and will come into contact with the original viscose, and the chemical compositions of the two glues are incompatible, resulting in a decrease in the bonding performance, so that the next two materials of cotton are not firmly adhered to each other, the present invention provides a hot melt blower for laminating the sound insulation cotton and a laminating method thereof.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A hot melt blower for laminating sound insulation cotton, comprising an assembly line, a hot air gun group and a traction device, wherein the hot air gun group is mounted on the top of one end of the assembly line, the hot air gun group comprises a first hot air gun, a second hot air gun and a connecting plate, the connecting plate is arranged on the top of one end of the assembly line, the first hot air gun and the second hot air gun are symmetrically arranged at the two ends of the connecting plate, the first hot air gun and the second hot air gun are both arranged vertically, the spacing between the first hot air gun and the second hot air gun is equal to the width of the sound insulation cotton, the traction device is arranged at the other end of the assembly line, the traction device is used to drive the sound insulation cotton with a bonding film placed on the surface to move on the assembly line, the first hot air gun and the second hot air gun respectively perform hot melt treatment on the two ends of the sound insulation cotton, and respectively bond the two sides of the bonding film to the two sides of the top of the sound insulation cotton.

[0009] As a preferred technical solution of the present invention, four groups of hot air guns are provided, and the four groups of hot air guns are arranged at equal intervals on the top of the assembly line along the setting direction of the assembly line.

[0010] As a preferred technical solution of the present invention, it also includes a moving assembly, which includes a moving shaft, a moving motor, a moving shell with a hollow interior, a lifting cylinder and a moving wheel group, wherein the moving motor is arranged at the bottom of the connecting plate, the moving shaft is coaxially connected to the output end of the moving motor, the axis direction of the moving shaft is parallel to the axis direction of the connecting plate, the lifting cylinder is slidably arranged on the moving shaft through a connecting member, the output end of the lifting cylinder is connected to the moving shell, and the moving wheel group is arranged at one end of the bottom of the moving shell close to the first hot air gun;

[0011] The moving wheel group includes a plurality of moving wheels, which are arranged at equal intervals at the bottom of the moving housing along a moving direction perpendicular to the moving wheels, and the setting length of the plurality of moving wheels is equal to the length of a single hot air gun hot melt bonding film.

[0012] As a preferred technical solution of the present invention, the mobile component also includes a plurality of blowing pipes, which are arranged at equal intervals at the bottom of the mobile shell along a moving direction perpendicular to the moving wheel, and the air outlets of the blowing pipes are inclined toward the direction of the second hot air gun, and the distance between the blowing pipes and the first hot air gun is greater than the distance between the moving wheel and the first hot air gun.

[0013] As a preferred technical solution of the present invention, the first hot air gun includes an air pump, a heating unit and an internally hollow heating tube, the movable assembly also includes an internally hollow connecting block, one end of the connecting plate is coaxially provided with an air pump, a heating unit and a heating tube in sequence from top to bottom, a sealing hole is penetrated through the side wall of the heating tube, the connecting block can be slidably sealed in the sealing hole, and the connecting block is provided with a connecting hole, and the connecting hole can lock or release its connection relationship with the heating tube.

[0014] As a preferred technical solution of the present invention, the mobile assembly further includes a hollow connecting pipe, a side wall of the connecting pipe is provided with a plurality of connecting holes, the interior of the connecting pipe is communicated with the plurality of connecting holes, the plurality of connecting holes are matched with a plurality of blowing pipes in a one-to-one correspondence, an air inlet of any blowing pipe is communicated with a corresponding connecting hole, and one end of the connecting block is connected to the mobile housing in a relatively slidable manner along a vertical direction;

[0015] The connecting block is also provided with a plurality of one-way holes, which are connected to the interior of the connecting block. The moving assembly further comprises a plurality of one-way valves, which are matched one-to-one with the plurality of one-way holes. Any of the one-way valves is arranged in the corresponding one-way hole. The interior of the connecting block is connected to the interior of the connecting pipe, and the one-way hole can lock or release its connection relationship with the heating pipe.

[0016] As a preferred technical solution of the present invention, the first hot air gun also includes a pressing module, which is arranged at one end of the movable shaft close to the air pump, and the pressing module is communicatively connected with the heating unit. The pressing module controls the heating temperature of the heating unit by whether it is in a pressing state, and the lifting cylinder can lock or release the pressing fit relationship between it and the pressing module.

[0017] As a preferred technical solution of the present invention, the movable assembly also includes a rotating rod, a pressing block and a pressing spring. The middle end of the rotating rod is hinged to the connecting plate. The central axis plane of the rotating rod coincides with the sliding vertical plane of the movable shell. The top end of the rotating rod is tilted toward the direction close to the first hot air gun. The two ends of the pressing spring are respectively connected to the connecting plate and the top end of the rotating rod. The pressing block is vertically hinged to the bottom end of the rotating rod. The pressing block can lock or release its pressing fit relationship with the bonding film.

[0018] As a preferred technical solution of the present invention, the mobile component also includes a sensing module, which is arranged on the connecting plate. The sensing module and the top end of the rotating rod are at the same height. The top end of the rotating rod can lock or release its press-fit relationship with the sensing module, and the sensing module is communicatively connected to the second hot air gun.

[0019] A laminating method for laminating sound insulation cotton, comprising the following steps:

[0020] S1: placing the sound insulation cotton on the assembly line manually;

[0021] S2: manually placing the laminating film on the top surface of the sound insulation cotton;

[0022] S3: starting the assembly line, and the assembly line transports the sound insulation cotton to the bottom of the connecting plate;

[0023] S4: Control the assembly line to stop working;

[0024] S5: the first hot air gun starts to work, performing heat-melting treatment on one end of the laminating film;

[0025] S6: After the first hot air gun finishes working, the second hot air gun starts working to perform heat melting treatment on the other end of the laminating film until the lamination treatment of the sound insulation cotton is completed.

[0026] The beneficial effects of the present invention are:

[0027] The scheme includes an assembly line, a first hot air gun, a second hot air gun and a connecting plate. The connecting plate is mounted on the top of one end of the assembly line. The first hot air gun and the second hot air gun are symmetrically arranged at the two ends of the connecting plate. The first hot air gun and the second hot air gun are both vertically arranged. The spacing between the first hot air gun and the second hot air gun is equal to the width of the sound insulation cotton. The assembly line of the scheme is used to transfer the sound insulation cotton with the bonding film placed on the top to the bottom of the connecting plate. The first hot air gun and the second hot air gun perform heat-melting treatment on the two ends of the sound insulation cotton respectively, and the two sides of the bonding film are respectively bonded to the two sides of the top of the sound insulation cotton. By heat-melting, the two sides of the bonding film are heat-melted, and then the two sides of the bonding film are bonded. It will adhere to the two side surfaces of the sound insulation cotton respectively, so that the bonding film is bonded to the sound insulation cotton; compared with the traditional method of sticking the bonding film to the sound insulation cotton through artificial glue, the setting of this solution saves the amount of glue and the number of labor, thereby reducing the production cost of the sound insulation cotton; in addition, it also solves the problem that after the existing laminating equipment coats the sound insulation cotton, when the sound insulation cotton is subjected to high-temperature treatment in the next process, the film set on the sound insulation cotton will be dissolved into glue at high temperature, and will come into contact with the original viscose, and the chemical compositions of the two glues are incompatible, resulting in a decrease in the bonding performance, making the next two materials of cotton not firmly adhered to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0029] Figure 1 An overall diagram of a hot melt blower for laminating sound insulation cotton according to the present invention (only a single hot air gun group is shown);

[0030] Figure 2 This is a composition diagram of a first hot air gun of a hot melt blower for laminating sound insulation cotton according to the present invention;

[0031] Figure 3 It is a front view of a moving component of a hot melt blower for laminating sound insulation cotton according to the present invention;

[0032] Figure 4 This is a cross-sectional view of a connection block of a hot melt blower for coating sound insulation cotton according to the present invention.

[0033] Description of main symbols

[0034] In the figure: 1. assembly line; 2. first hot air gun; 201. air pump; 202. heating unit; 203. heating pipe; 204. pressing module; 3. second hot air gun; 4. connecting plate; 5. moving assembly; 501. moving shaft; 502. moving motor; 503. moving shell; 504. lifting cylinder; 505. moving wheel; 506. blowing pipe; 507. connecting pipe; 508. connecting block; 5081. connecting hole; 5082. one-way hole; 509. one-way valve; 510. rotating rod; 511. pressing block; 512. pressing spring; 513. sensing module. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0036] See also Figure 1-4The present embodiment provides a hot melt blower for laminating sound insulation cotton, including an assembly line 1, a hot air gun group and a traction device. The hot air gun group is mounted on the top of one end of the assembly line 1. The hot air gun group includes a first hot air gun 2, a second hot air gun 3 and a connecting plate 4. The connecting plate 4 is mounted on the top of one end of the assembly line 1. The first hot air gun 2 and the second hot air gun 3 are symmetrically arranged at both ends of the connecting plate 4. The first hot air gun 2 and the second hot air gun 3 are both vertically arranged. The distance between the first hot air gun 2 and the second hot air gun 3 is equal to the width of the sound insulation cotton; it should be noted that the laminating area of ​​the sound insulation cotton by the bonding film of this scheme is equal to the top surface area of ​​the sound insulation cotton. The traction device of the present solution is arranged at the other end of the assembly line 1, and the traction device is used to drive the sound insulation cotton with the bonding film placed on the surface to move on the assembly line 1. The first hot air gun 2 and the second hot air gun 3 perform heat-melting treatment on the two ends of the sound insulation cotton respectively, and the two sides of the bonding film are respectively bonded to the two sides of the top of the sound insulation cotton. By heat-melting, the two sides of the bonding film are heat-melted, and then the two sides of the bonding film are respectively adhered to the two side surfaces of the sound insulation cotton, so that the bonding film is bonded to the sound insulation cotton; compared with the traditional method of using artificial glue, The bonding film is bonded to the sound insulation cotton. The setting of this solution saves the amount of viscose and the number of labors, thereby reducing the production cost of the sound insulation cotton. In addition, it also solves the problem that after the existing laminating equipment has laminated the sound insulation cotton, when the sound insulation cotton undergoes high-temperature treatment in the next process, the film set on the sound insulation cotton will be dissolved into glue at high temperature, and will come into contact with the original viscose. The chemical compositions of the two glues are incompatible, resulting in a decrease in the bonding performance, making the next two materials of cotton not firmly adhered to each other.

[0037] Specifically, in order to speed up the speed and efficiency of the coating treatment of the sound insulation cotton in this scheme, four groups of hot air guns are arranged in this scheme, and the four groups of hot air guns are arranged at equal intervals on the top of the assembly line 1 along the setting direction of the assembly line 1.

[0038] During the actual operation of the device, the first hot air gun 2 first performs heat-melting treatment on one side of the laminating film, and then the second hot air gun 3 performs heat-melting treatment on the other side of the laminating film; before the first hot air gun 2 starts working, the laminating film is only placed on the sound insulation cotton, and there is no adhesive force between the laminating film and the sound insulation cotton. Therefore, when the first hot air gun 2 performs heat-melting treatment on one side of the laminating film, the position of the laminating film will deviate due to the wind force of the first hot air gun 2, which will cause the device to be unable to perform film coating treatment on the sound insulation cotton; based on this, in order to solve the above problems, the present solution also includes a moving component 5, the moving component 5 includes a moving shaft 501, a moving motor 502, an internally hollow moving shell 503, a lifting cylinder 504 and a moving wheel 505 group, the moving motor 502 is arranged at the bottom of the connecting plate 4, and the moving shaft 50 1 is coaxially connected to the output end of the mobile motor 502, the axial direction of the mobile shaft 501 is parallel to the axial direction of the connecting plate 4, the lifting cylinder 504 is slidably arranged on the mobile shaft 501 through a connecting piece, the output end of the lifting cylinder 504 is connected to the mobile shell 503, and the moving wheel 505 group is arranged at the bottom of the mobile shell 503 near one end of the first hot air gun 2. Through such a setting, before the first hot air gun 2 of this scheme starts working, the lifting cylinder 504 will control the mobile shell 503 to move toward the bottom, so that the moving wheel 505 group connected to the mobile shell 503 is in contact with the laminating film; after the moving wheel 505 group is in contact with the laminating film, the relative position of the laminating film and the sound insulation cotton will not move. At this time, the first hot air gun 2 is controlled to work again, which can ensure that one side of the laminating film is in contact with the sound insulation cotton.

[0039] Specifically, the moving wheel 505 group of the present scheme includes a plurality of moving wheels 505, and the plurality of moving wheels 505 are arranged at equal intervals at the bottom of the moving shell 503 along a moving direction perpendicular to the moving wheel 505, and the setting length of the plurality of moving wheels 505 is equal to the length of the single first hot air gun 2 hot melt bonding film. Such a setting can ensure that there will be no relative movement between the bonding film of this length and the sound insulation cotton. After the initial hot melt treatment of the bonding film, since the bonding film at the front end has been bonded to the sound insulation cotton, the bonding film on the same side that has not yet been bonded to the sound insulation cotton will not move relative to the sound insulation cotton, thereby ensuring the quality of the device's coating treatment of the sound insulation cotton.

[0040] As described in the above embodiment, after the first hot air gun 2 completes the hot-melt treatment on one side of the laminating film, the second hot air gun 3 is required to perform hot-melt treatment on the other side of the laminating film. However, before the second hot air gun 3 starts working, it is necessary to ensure that the middle part of the laminating film is in contact with the sound insulation cotton. In actual situations, the distance between the two sides of the laminating film after the hot-melt treatment is larger than the distance between the two sides of the sound insulation cotton and the laminating film, so that the middle part of the laminating film cannot be in contact with the surface of the sound insulation cotton. Based on this, in order to solve this problem, the mobile component 5 of the present scheme also includes a plurality of blowing pipes 506, a plurality of blowing The air duct 506 is arranged at equal intervals at the bottom of the mobile housing 503 along the moving direction perpendicular to the moving wheel 505, and the air outlet of the blowing pipe 506 is arranged obliquely in the direction of the second hot air gun 3. By providing the blowing pipe 506, after the first hot air gun 2 completes its work, the mobile motor 502 starts to work, so that the blowing pipe 506 gradually moves from the first hot air gun 2 to the second hot air gun 3. During the operation of the mobile motor 502, the blowing pipe 506 will continuously blow in the direction of the second hot air gun 3 to straighten the middle part of the laminating film, so that the middle part of the laminating film is attached to the sound insulation cotton. It is worth noting that in order to ensure that the blowing pipe 506 can smoothly straighten the middle part of the laminating film, the distance between the blowing pipe 506 and the first hot air gun 2 is greater than the distance between the moving wheel 505 and the first hot air gun 2.

[0041] Specifically, the specific structure of the first hot air gun 2 of the present invention includes an air pump 201, a heating unit 202 and an internally hollow heating tube 203, the moving assembly 5 also includes an internally hollow connecting block 508, one end of the connecting plate 4 is coaxially provided with the air pump 201, the heating unit 202 and the heating tube 203 from top to bottom, a sealing hole is provided through the side wall of the heating tube 203, the connecting block 508 is slidably sealed in the sealing hole, the connecting block 508 is provided with a connecting hole 5081, and the connecting hole 508 1 can lock or release its connection with the heating tube 203; it is worth noting that the connecting hole 5081 of the present solution has the same inner diameter as the heating tube 203. When the connecting hole is connected and matched with the inside of the heating tube 203, the wind passing through the heating unit 202 will pass through the heating tube 203 and blow toward the laminating film at the bottom of the heating tube 203; when the connecting hole is sealed and matched with the inside of the heating tube 203, the wind passing through the heating unit 202 cannot pass through the heating tube 203 and blow toward the laminating film at the bottom of the heating tube 203.

[0042] Furthermore, the mobile component 5 of the present scheme also includes an internally hollow connecting pipe 507, and a plurality of connecting holes are provided on the side wall of the connecting pipe 507. The interior of the connecting pipe 507 is interconnected with the plurality of connecting holes, and the plurality of connecting holes are matched one-to-one with the plurality of blowing pipes 506, and the air inlet of any blowing pipe 506 is connected with the corresponding connecting hole; it is necessary to first describe the connection relationship of the connecting block 508 clearly here, and a sliding groove is provided at one end of the mobile shell 503 of the present scheme close to the connecting block 508, and the setting direction of the sliding groove is consistent with the lifting direction of the mobile shell 503, and one end of the connecting block 508 is slidably provided in the sliding groove, so that the connecting block 508 of the present scheme can slide in the vertical direction relative to the mobile shell 503, but when the mobile shell 503 slides along the central axis of the mobile shaft 501, the connecting block 508 will move with the movement of the mobile shell 503; the connecting block 508 also has a plurality of one-way holes 5082, and the one-way holes 5082 are connected with the interior of the connecting block 508. It should be noted here that the connection relationship of the present scheme The connecting hole 5081 of the connecting block 508 is not connected to the interior of the connecting block 508, but the interior of the connecting block 508 is connected to the interior of the moving housing 503 through the air pipe, and the interior of the connecting pipe 507 is connected to the interior of the moving housing 503, so the gas in the connecting block 508 is transmitted to the connecting pipe 507 through the moving housing 503; the moving assembly 5 also includes a plurality of one-way valves 509, and the plurality of one-way valves 509 are matched one-to-one with the plurality of one-way holes 5082, and any one-way valve 509 is set at the corresponding In the one-way hole 5082, the interior of the connection block 508 is connected to the interior of the connection pipe 507, and the one-way hole 5082 can lock or release its connection relationship with the heating pipe 203; it is worth noting that when the one-way hole 5082 of this solution is in a connection and matching relationship with the heating pipe 203, the wind passing through the heating unit 202 will flow into the connection block 508 through the one-way hole 5082, and enter the connection pipe 507 through the connection block 508, and finally reach each blowing pipe 506, realizing the structure of the blowing pipe 506 outlet. In addition, it is also necessary to explain that the function of the one-way valve 509 of this solution is that the gas outside the connection block 508 can enter the connection block 508 through the one-way valve 509, while the gas inside the connection block 508 cannot overflow to the outside of the connection block 508 through the one-way valve 509.

[0043] In addition, according to the above embodiment, there is still a problem, that is, the wind generated by the wind pump 201 will first pass through the heating unit 202, and then flow toward the air outlet of the heating tube 203 or the one-way hole 5082 of the connecting block 508. According to the actual application of the device, when the device needs the first hot air gun 2 to perform heat-melting treatment on the bonding film, the heating unit 202 starts working first to increase the temperature to the specified temperature, and then the wind generated by the wind pump 201 will pass through the heating unit 202 to increase the temperature, and then flow out toward the air outlet of the heating tube 203 to perform heat-melting treatment on the bonding film; when the device needs the blowing pipe 506 to heat the bonding film When the intermediate part is adjusted, the heating unit 202 needs to stop working, and then the wind generated by the wind pump 201 flows toward the one-way hole 5082 of the connecting block 508. Based on this, in order to achieve this effect, the first hot air gun 2 of the present scheme also includes a pressing module 204, and the pressing module 204 is arranged at one end of the moving shaft 501 close to the wind pump 201. The pressing module 204 is communicated with the heating unit 202. The pressing module 204 controls the heating temperature of the heating unit 202 by whether it is in a pressed state. The lifting cylinder 504 can lock or release its pressing matching relationship with the pressing module 204. It should be noted that when the first hot air gun 2 needs to perform heat-melting treatment on the bonding film, the lifting cylinder 504 and the pressing module 204 are in a pressed fit state, and at this time, the central axis of the connecting hole 5081 of the connecting block 508 coincides with the central axis of the air outlet of the heating tube 203, and the one-way hole 5082 of the connecting block 508 and the air outlet of the heating tube 203 are in a mutually sealed fit relationship, and the heating unit 202 starts to work and raises the temperature to the specified temperature, and then the wind generated by the wind pump 201 is heated by the heating unit 202 and then flows out toward the air outlet of the heating tube 203 to perform heat-melting treatment on the bonding film;

[0044] When the first hot air gun 2 completes the hot melt treatment of the bonding film, the moving motor 502 starts working and drives the lifting cylinder 504 to move. The lifting cylinder 504 releases its pressing fit state with the pressing module 204, and at this time, the connecting area between the connecting hole 5081 of the connecting block 508 and the air outlet of the heating tube 203 becomes smaller and smaller, until the connecting hole 5081 and the heating tube 203 are in a sealed fit relationship, and the number of one-way holes 5082 of the connecting block 508 and the air outlet of the heating tube 203 that are in a mutually connecting fit relationship increases, the heating unit 202 stops working, and the wind generated by the air pump 201 will flow into the connecting block 508 through the one-way hole 5082, and then flow to the connecting tube 507 through the connecting block 508, until it reaches the blowing tube 506 and is blown out.

[0045] Furthermore, the movable assembly 5 of the present scheme also includes a rotating rod 510, a pressing block 511 and a pressing spring 512. The middle end of the rotating rod 510 is hinged to the connecting plate 4. The central axis plane of the rotating rod 510 coincides with the sliding vertical plane of the movable shell 503. The top of the rotating rod 510 is tilted toward the direction close to the first hot air gun 2. The two ends of the pressing spring 512 are respectively connected to one end of the connecting plate 4 close to the second hot air gun 3 and the top of the rotating rod 510. The pressing block 511 is vertically hinged to the bottom end of the rotating rod 510. The pressing block 511 can lock or release its pressure on the bonding film. Matching relationship. Through such an arrangement, as the mobile motor 502 works, the mobile shell 503 gradually approaches the direction of the second hot air gun 3. Since the blowing tube 506 is arranged at an angle, the bonding film will first be adjusted, and the bonding film will be completely bonded to the sound insulation cotton. Then the mobile shell 503 continues to move, and the mobile shell 503 will press the top of the rotating rod 510, so that the rotating rod 510 is transformed from an inclined state to a vertical state, so that the length of the rotating rod 510 projected on the vertical plane gradually becomes longer. After the rotating rod 510 is rotated to the vertical state, the pressing block 511 is in a pressing matching relationship with the bonding film.

[0046] Furthermore, the mobile assembly 5 of this solution also includes a sensing module 513, which is arranged on the connecting plate 4. The sensing module 513 and the top of the rotating rod 510 are at the same height. The top of the rotating rod 510 can lock or release its press-fit relationship with the sensing module 513. The sensing module 513 is connected to the second hot air gun 3 for communication. It should be noted that after the rotating rod 510 is in a vertical state, the rotating rod 510 will also press the sensing module 513. This arrangement makes the second hot air gun 3 start to work after the pressing block 511 is in a press-fit relationship with the laminating film, and the other end of the laminating film is hot-melted, thereby completing the laminating process of the sound insulation cotton. After the device completes the laminating process of the sound insulation cotton, it is reset again.

[0047] A laminating method for laminating sound insulation cotton, comprising the following steps:

[0048] S1: Place the sound insulation cotton on assembly line 1 manually;

[0049] S2: manually placing the laminating film on the top surface of the sound insulation cotton;

[0050] S3: Start the assembly line 1, and the assembly line 1 transports the sound insulation cotton to the bottom of the connecting plate 4;

[0051] S4: Control pipeline 1 to stop working;

[0052] S5: The first hot air gun 2 starts to work, performing heat-melting treatment on one end of the laminating film;

[0053] S6: After the first hot air gun 2 finishes working, the second hot air gun 3 starts working to perform heat melting treatment on the other end of the laminating film until the lamination treatment of the sound insulation cotton is completed.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hot melt blower for laminating sound insulation cotton, characterized in that: It includes an assembly line, a hot air gun group and a traction device, wherein the hot air gun group is mounted on the top of one end of the assembly line, the hot air gun group includes a first hot air gun, a second hot air gun and a connecting plate, the connecting plate is arranged on the top of one end of the assembly line, the first hot air gun and the second hot air gun are symmetrically arranged at the two ends of the connecting plate, the first hot air gun and the second hot air gun are both arranged vertically, the spacing between the first hot air gun and the second hot air gun is equal to the width of the sound insulation cotton, the traction device is arranged at the other end of the assembly line, the traction device is used to drive the sound insulation cotton with a bonding film placed on the surface to move on the assembly line, the first hot air gun and the second hot air gun respectively perform heat melting treatment on the two ends of the sound insulation cotton, and respectively bond the two sides of the bonding film to the two sides of the top of the sound insulation cotton; It also includes a moving assembly, which includes a moving shaft, a moving motor, a moving shell with a hollow interior, a lifting cylinder and a moving wheel group, wherein the moving motor is arranged at the bottom of the connecting plate, the moving shaft is coaxially connected to the output end of the moving motor, the axis direction of the moving shaft is parallel to the axis direction of the connecting plate, the lifting cylinder is slidably arranged on the moving shaft through a connecting member, the output end of the lifting cylinder is connected to the moving shell, and the moving wheel group is arranged at one end of the bottom of the moving shell close to the first hot air gun; The moving wheel group includes a plurality of moving wheels, which are arranged at equal intervals at the bottom of the moving housing along a direction perpendicular to the moving direction of the moving wheels, and the arrangement length of the plurality of moving wheels is equal to the length of the hot-melt bonding film of the first hot air gun in a single time; The mobile assembly further comprises a plurality of blowing pipes, which are arranged at equal intervals at the bottom of the mobile housing along a moving direction perpendicular to the moving wheel, and the air outlets of the blowing pipes are arranged obliquely toward the direction of the second hot air gun, and the distance between the blowing pipes and the first hot air gun is greater than the distance between the moving wheel and the first hot air gun; The first hot air gun includes an air pump, a heating unit and a heating pipe with a hollow interior, the moving assembly also includes a connecting block with a hollow interior, one end of the connecting plate is coaxially provided with the air pump, the heating unit and the heating pipe in sequence from top to bottom, a sealing hole is provided through the side wall of the heating pipe, the connecting block is slidably and sealedly provided in the sealing hole, the connecting block is provided with a communicating hole, and the communicating hole can lock or release the communication relationship between the connecting block and the heating pipe; The mobile assembly further comprises a hollow connecting pipe, a side wall of which is provided with a plurality of connecting holes, the interior of the connecting pipe is connected to the plurality of connecting holes, the plurality of connecting holes are matched with the plurality of blowing pipes in a one-to-one correspondence, the air inlet of any blowing pipe is connected to the corresponding connecting hole, and one end of the connecting block is connected to the mobile housing in a relatively slidable manner along a vertical direction; The connecting block is also provided with a plurality of one-way holes, which are connected to the interior of the connecting block. The moving assembly further comprises a plurality of one-way valves, which are matched one-to-one with the plurality of one-way holes. Any of the one-way valves is arranged in the corresponding one-way hole. The interior of the connecting block is connected to the interior of the connecting pipe, and the one-way hole can lock or release its connection relationship with the heating pipe.

2. According to claim 1, a hot melt blower for coating sound insulation cotton is characterized in that: The hot air gun groups are arranged in four groups, and the four groups of hot air gun groups are arranged at equal intervals on the top of the assembly line along the arrangement direction of the assembly line.

3. According to claim 1, a hot melt blower for coating sound insulation cotton is characterized in that: The first hot air gun also includes a pressing module, which is arranged at one end of the movable shaft close to the air pump. The pressing module is communicated with the heating unit. The pressing module controls the heating temperature of the heating unit by whether it is in a pressing state. The lifting cylinder can lock or release the pressing fit relationship between it and the pressing module.

4. According to claim 1, a hot melt blower for coating sound insulation cotton is characterized in that: The moving assembly also includes a rotating rod, a pressing block and a pressing spring. The middle end of the rotating rod is hinged to the connecting plate. The central axis plane of the rotating rod coincides with the sliding vertical plane of the moving shell. The top end of the rotating rod is tilted toward the direction close to the first hot air gun. The two ends of the pressing spring are respectively connected to the connecting plate and the top end of the rotating rod. The pressing block is vertically hinged to the bottom end of the rotating rod. The pressing block can lock or release its pressing fit relationship with the bonding film.

5. A hot melt blower for coating sound insulation cotton according to claim 4, characterized in that: The mobile component also includes a sensing module, which is arranged on the connecting plate. The sensing module and the top end of the rotating rod are at the same height. The top end of the rotating rod can lock or release its press-fit relationship with the sensing module. The sensing module is communicatively connected with the second hot air gun.

6. A coating method for coating sound insulation cotton, applicable to the hot melt blower for coating sound insulation cotton according to any one of claims 2 to 5, characterized in that: The following steps are involved: S1: placing the sound insulation cotton on the assembly line manually; S2: manually placing the laminating film on the top surface of the sound insulation cotton; S3: starting the assembly line, and the assembly line transports the sound insulation cotton to the bottom of the connecting plate; S4: Control the assembly line to stop working; S5: the first hot air gun starts to work, performing heat-melting treatment on one end of the laminating film; S6: After the first hot air gun finishes working, the second hot air gun starts working to perform heat melting treatment on the other end of the laminating film until the lamination treatment of the sound insulation cotton is completed.

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