Hot melt adhesive and processing method thereof

Abstract

The invention relates to the field of hot melt adhesives, in particular to a hot melt adhesive and a processing method thereof.The processing method includes the steps that S1, an adhesive material in a molten state is added into an extrusion pipe through a feeding pipe; s2, a transmission spiral plate rotates, and the rubber material is spirally pushed into a forming cavity between a forming outer pipe and a forming inner pipe; and S3, molding the rubber material in the molten state between the molding outer pipe and the molding inner pipe to obtain the hollow pipe body hot melt adhesive. The hot melt adhesive processing device comprises an extrusion pipe with a feeding pipe arranged on the side face, a forming outer pipe is arranged at the lower end of the extrusion pipe, a cover plate is fixed to the upper end of the extrusion pipe, a rotating shaft is rotationally arranged on the cover plate, a spiral plate is fixed to the rotating shaft, a forming inner pipe is rotationally arranged in the center of the rotating shaft, and the forming inner pipe extends into the forming outer pipe; according to the invention, the hot melt adhesive is processed into the hollow pipe body, so that the adhesive is quickly cooled and molded, the molding time of the adhesive is shortened, and the processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of hot melt adhesives, in particular to a hot melt adhesive and a processing method thereof. Background Art

[0002] Hot melt adhesive is a plastic adhesive. Its physical state changes with temperature within a certain temperature range, while its chemical properties remain unchanged. It is non-toxic and odorless, and is an environmentally friendly chemical product. It is solid, easy to package, transport, store, solvent-free, pollution-free, and non-toxic; and has the advantages of simple production process, high added value, high bonding strength, and fast speed, so it is highly favored. At the same time, hot melt adhesive is a solid fusible polymer that does not require solvents and does not contain 100% water. It is solid at room temperature and becomes a flowable liquid with a certain viscosity when heated and melted to a certain temperature. The melted hot melt adhesive is light brown or white. Hot melt adhesive is composed of basic resin, tackifier, viscosity regulator, antioxidant and other ingredients. Common hot melt adhesives are mostly in rod or granular form.

[0003] During the processing and production of existing hot melt glue sticks, in order to ensure that the hot melt glue stick is completely cooled and formed and to avoid the inner core of the hot melt glue stick not being completely cooled and affecting the quality, a long cooling time is required, thereby affecting the processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a hot melt adhesive and a processing method thereof, which can reduce the adhesive molding time and improve the processing efficiency by processing the hot melt adhesive into a hollow tube body and then quickly cooling the adhesive body into shape.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A hot melt adhesive processing device comprises an extrusion tube with a feeding tube on the side, a molded outer tube at the lower end of the extrusion tube, a cover plate fixed to the upper end of the extrusion tube, a rotating shaft rotating on the cover plate, a spiral plate fixed on the rotating shaft, a molded inner tube rotating at the center of the rotating shaft, and the molded inner tube extending into the molded outer tube.

[0007] A flow guide core tube is arranged inside the molded inner tube, a cooling tube is sleeved on the outer side of the molded outer tube, and two connecting tubes are arranged on the side of the cooling tube.

[0008] It also includes a mixing cylinder with a bottom plate at the lower end, a plurality of connecting holes are arranged on the bottom plate, a supporting middle tube is arranged at the center of the lower end of the bottom plate, a sleeve is rotated on the supporting middle tube, a disc seat is fixed on the upper end of the sleeve, a plurality of feeding tubes are evenly fixed on the lower end of the disc seat in a circumferential direction, and the plurality of feeding tubes correspond to the plurality of connecting holes one by one.

[0009] The feeding pipe is arranged inclined.

[0010] A support plate is fixed at the lower end of the supporting middle tube, and a plurality of extension plates are fixed circumferentially on the supporting plate. A support leg is fixed at the lower end of each extension plate. The lower ends of the plurality of formed outer tubes slide in contact with the upper end surfaces of the plurality of extension plates. A gear ring is fixed on the formed outer tube, and the gear ring is transmission-connected to the upper ends of the plurality of rotating shafts at the same time.

[0011] The extension plate is provided with a chamfer at a position corresponding to the formed outer tube.

[0012] Four annular pipes are vertically fixed to the upper ends of the multiple extension plates, the inner ends of the four annular pipes are all rotated with inner rings, and connecting pipes are fixed to the outer ends of the four annular pipes. The four annular pipes are respectively connected and fixed to the corresponding multiple connecting pipes, formed inner pipes and guide core pipes.

[0013] A crossbeam plate is fixed on the upper end of the mixing cylinder, a stirring shaft is rotated on the crossbeam plate, and a spiral frame is fixed on the stirring shaft.

[0014] A processing method using the hot melt adhesive processing device comprises:

[0015] S1, adding the molten rubber into the extrusion tube through the feeding tube;

[0016] S2, the transmission spiral plate rotates to push the rubber spiral into the molding cavity between the molding outer tube and the molding inner tube;

[0017] S3. The molten rubber material is formed between the molded outer tube and the molded inner tube to obtain a hollow tube body hot melt adhesive.

[0018] The hot melt adhesive processed by the method has a hollow tube structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a hot melt adhesive processing device;

[0020] Figures 2 to 5 It is a partial structural schematic diagram of a hot melt adhesive processing device;

[0021] Figure 6 It is a schematic diagram of the structure of the annular pipeline;

[0022] Figure 7 It is a schematic diagram of the structure of an extruded tube, a formed outer tube, a formed inner tube, a flow guide core tube, and a cooling tube;

[0023] Figure 8 yes Figure 7 A schematic cross-sectional structure diagram of ;

[0024] Fig. 9 It is a schematic diagram of the structure of the stirring shaft and the spiral frame;

[0025] Fig.10It is a schematic diagram of the structure of a hot melt hose.

[0026] In the figure:

[0027] Mixing barrel 101; bottom plate 102; supporting middle tube 103; supporting plate 104; extension plate 105; supporting leg 106; annular pipe 107; connecting pipe 108; cross beam plate 109; inner ring 110; gear ring 111;

[0028] Disc seat 201; sleeve 202;

[0029] Extrusion tube 301; feeding tube 302; forming outer tube 303; cover plate 304; rotating shaft 305; spiral plate 306;

[0030] Molding inner tube 401; flow guiding core tube 402; cooling tube 403; connecting tube 404;

[0031] Stirring shaft 501; spiral frame 502. DETAILED DESCRIPTION

[0032] like Figure 1-10 As shown in the figure, a detailed description of the hot melt adhesive processing device is provided:

[0033] A hot melt adhesive processing device includes an extrusion tube 301 with a feeding tube 302 on the side, a molded outer tube 303 is provided at the lower end of the extrusion tube 301, a cover plate 304 is fixed to the upper end of the extrusion tube 301, a rotating shaft 305 rotates on the cover plate 304, a spiral plate 306 is fixed on the rotating shaft 305, a molded inner tube 401 rotates at the center of the rotating shaft 305, and the molded inner tube 401 extends into the molded outer tube 303.

[0034] During processing, the molten rubber is added into the extrusion tube 301 through the feeding tube 302, and the transmission rotating shaft 305 rotates at the same time, which in turn drives the spiral plate 306 to rotate, thereby spirally pushing the rubber into the molding cavity between the molding outer tube 303 and the molding inner tube 401. Under the influence of the molding outer tube 303 and the molding inner tube 401, the molten rubber is molded between the molding outer tube 303 and the molding inner tube 401, so that a hollow tube body hot melt adhesive is obtained at the lower end of the molding outer tube 303;

[0035] Compared with hot melt glue sticks, the hot melt glue with a hollow tube inside processed by this device can be cooled and formed more quickly, thereby reducing the glue molding time and improving the processing efficiency. Moreover, it avoids the situation where the inner core cooling effect is poor when processing the hot melt glue stick, affecting the quality.

[0036] like Figure 1-10 As shown:

[0037] The inner molded tube 401 is provided with a flow guide core tube 402 , the outer molded tube 303 is sleeved with a cooling tube 403 , and two connecting tubes 404 are provided on the side of the cooling tube 403 .

[0038] The coolant is introduced into the molding inner tube 401, flows into the guide core tube 402 at the lower end of the molding inner tube 401, and flows out of the molding inner tube 401, thereby forming a circulation flow of the coolant inside the molding inner tube 401, thereby improving the cooling efficiency of the molding inner tube 401 on the rubber material;

[0039] The coolant is introduced into one of the connecting pipes 404, flows in the cooling pipe 403, and then flows out through the other connecting pipe 404, so that the coolant circulates between the molding outer pipe 303 and the cooling pipe 403, thereby improving the cooling efficiency of the molding outer pipe 303 on the rubber material;

[0040] Subsequently, the rubber molding time is further reduced and the processing efficiency is improved.

[0041] like Figure 1-10 As shown:

[0042] It also includes a mixing barrel 101 with a bottom plate 102 at the lower end, a plurality of connecting holes are arranged on the bottom plate 102, a supporting middle tube 103 is arranged at the center of the lower end of the bottom plate 102, a sleeve 202 is rotated on the supporting middle tube 103, a disc seat 201 is fixed to the upper end of the sleeve 202, a plurality of feeding tubes 302 are evenly fixed to the lower end of the disc seat 201 in a circumferential direction, and the plurality of feeding tubes 302 correspond to the plurality of connecting holes one by one.

[0043] The mixing barrel 101 is used to contain the molten rubber material, and then communicates with the feeding tube 302 through the communicating hole, so that the mixing barrel 101 supplies multiple extrusion tubes 301 at the same time; thereby, multiple extrusion tubes 301 can be processed simultaneously, further improving the processing efficiency;

[0044] Wherein, a resistance wire is wound around the mixing barrel 101 to heat the rubber material in the mixing barrel 101 .

[0045] Further:

[0046] The feeding tube 302 is tilted to facilitate the rubber material in the mixing barrel 101 to flow into the extrusion tube 301 .

[0047] like Figure 1-10 As shown:

[0048] A support plate 104 is fixed to the lower end of the supporting middle tube 103, and a plurality of extension plates 105 are fixed circumferentially on the supporting plate 104. A support leg 106 is fixed to the lower end of each extension plate 105. The lower ends of the plurality of formed outer tubes 303 slide in contact with the upper end surfaces of the plurality of extension plates 105. A gear ring 111 is fixed on the formed outer tube 303, and the gear ring 111 is simultaneously transmission-connected to the upper ends of the plurality of rotating shafts 305.

[0049] The device is supported by a plurality of legs 106. At the same time, the sleeve 202 is driven by a first motor installed on the supporting middle tube 103, so that the disc seat 201 rotates, and then drives the plurality of extrusion tubes 301 to rotate, thereby forming a relative movement between the plurality of rotating shafts 305 and the gear ring 111, thereby forming a transmission of the plurality of rotating shafts 305, and then achieving the purpose of simultaneously driving the spiral plate 306 to rotate and spirally push the rubber material;

[0050] At the same time, since the plurality of extension plates 105 are arranged at intervals, when one of the extruded tubes 301 carrying the formed outer tube 303 moves to another adjacent extension plate 105 with one extension plate 105, during the movement, a section of hot melt adhesive tube will be formed at the lower end of the extruded tube 301, and when it contacts the next extension plate 105, the hot melt adhesive tube will be sheared;

[0051] When the disc seat 201 rotates at the lower end of the bottom plate 102 , the multiple feeding pipes 302 are intermittently connected with the multiple connecting holes to ensure the supply of the rubber material to the extrusion pipe 301 .

[0052] Further:

[0053] The extension plate 105 is provided with a chamfer at a position corresponding to the molded outer tube 303 .

[0054] By providing chamfers on the extension plate 105 , the shearing performance of the extension plate 105 is improved while the supporting performance of the extension plate 105 is ensured.

[0055] like Figure 1-10 As shown:

[0056] Four annular pipes 107 are vertically fixed to the upper ends of the multiple extension plates 105, and the inner ends of the four annular pipes 107 are all rotated with inner rings 110. Connecting pipes 108 are fixed to the outer ends of the four annular pipes 107. The four annular pipes 107 are respectively connected and fixed to the corresponding multiple connecting pipes 404, the formed inner pipes 401 and the guide core pipe 402.

[0057] Since the two connecting tubes 404, the forming inner tube 401 and the guide core tube 402 on each extruded tube 301 will rotate with the disc seat 201, four inner rings 110 are set, and the connecting tubes 404, the forming inner tube 401 and the guide core tube 402 at the same height are connected to the four annular pipes 107 respectively, and then the coolant circulation system cools multiple processing and molding cavities at the same time through the four connecting tubes 108.

[0058] like Figure 1-10 As shown:

[0059] A crossbeam plate 109 is fixed to the upper end of the mixing barrel 101 , a stirring shaft 501 rotates on the crossbeam plate 109 , and a spiral frame 502 is fixed on the stirring shaft 501 .

[0060] The second motor installed on the crossbeam 109 drives the stirring shaft 501, which in turn drives the spiral frame 502 to rotate in the mixing barrel 101 to stir the rubber material. Moreover, during processing, the rubber material in the mixing barrel 101 can be pushed downward by the spiral frame 502 to improve the supply efficiency of the rubber material.

[0061] like Figure 1-10 As shown:

[0062] A processing method using the hot melt adhesive processing device comprises:

[0063] S1, adding the molten rubber into the extrusion tube 301 through the feeding tube 302;

[0064] S2, the driving spiral plate 306 rotates to push the rubber spiral into the molding cavity between the molding outer tube 303 and the molding inner tube 401;

[0065] S3, the molten rubber material is formed between the molded outer tube 303 and the molded inner tube 401 to obtain a hollow tube body hot melt adhesive.

[0066] like Fig.10 As shown:

[0067] The hot melt adhesive is a hollow tube structure.

[0068] By processing the colloid into a tube shape, the colloid can be cooled inside and outside at the same time during molding, so that the colloid can be quickly cooled and molded, reducing the molding time of the rubber material and improving the processing efficiency.

Claims

1. A hot melt adhesive processing device, characterized in that: The invention comprises an extrusion tube (301) with a feeding tube (302) provided on the side thereof, a molded outer tube (303) provided at the lower end of the extrusion tube (301), a cover plate (304) fixed at the upper end of the extrusion tube (301), a rotating shaft (305) rotating on the cover plate (304), a spiral plate (306) fixed on the rotating shaft (305), a molded inner tube (401) rotating at the center of the rotating shaft (305), and the molded inner tube (401) extending into the molded outer tube (303).

2. A hot melt adhesive processing device according to claim 1, characterized in that: A flow guide core tube (402) is provided inside the molded inner tube (401), a cooling tube (403) is sleeved on the outer side of the molded outer tube (303), and two connecting tubes (404) are provided on the side of the cooling tube (403).

3. A hot melt adhesive processing device according to claim 2, characterized in that: The invention also comprises a mixing cylinder (101) with a bottom plate (102) at the lower end, a plurality of communication holes being provided on the bottom plate (102), a supporting middle tube (103) being provided at the center of the lower end of the bottom plate (102), a sleeve (202) being rotatable on the supporting middle tube (103), a disc seat (201) being fixed at the upper end of the sleeve (202), and a plurality of feeding tubes (302) being uniformly fixed circumferentially at the lower end of the disc seat (201), and the plurality of feeding tubes (302) corresponding one to one to the plurality of communication holes respectively.

4. A hot melt adhesive processing device according to claim 3, characterized in that: The feeding pipe (302) is arranged tilted.

5. The hot melt adhesive processing device according to claim 3, characterized in that: A support plate (104) is fixed to the lower end of the supporting middle tube (103), and a plurality of extension plates (105) are fixed circumferentially on the supporting plate (104). A support leg (106) is fixed to the lower end of each extension plate (105). The lower ends of the plurality of molded outer tubes (303) are fitted and slidably engaged with the upper end surfaces of the plurality of extension plates (105). A gear ring (111) is fixed to the molded outer tube (303), and the gear ring (111) is simultaneously transmission-connected to the upper ends of the plurality of rotating shafts (305).

6. A hot melt adhesive processing device according to claim 5, characterized in that: The extension plate (105) is provided with a chamfer at a position corresponding to the formed outer tube (303).

7. A hot melt adhesive processing device according to claim 6, characterized in that: Four annular pipes (107) are vertically fixed to the upper ends of the plurality of extension plates (105); inner rings (110) are rotatably mounted at the inner ends of the four annular pipes (107); connecting pipes (108) are fixed to the outer ends of the four annular pipes (107); and the four annular pipes (107) are respectively connected and fixed to the corresponding plurality of connecting pipes (404), the formed inner pipe (401) and the guide core pipe (402).

8. The hot melt adhesive processing device according to claim 3, characterized in that: A crossbeam (109) is fixed to the upper end of the mixing cylinder (101), a stirring shaft (501) rotates on the crossbeam (109), and a spiral frame (502) is fixed on the stirring shaft (501).

9. A processing method using a hot melt adhesive processing device according to any one of claims 1 to 8, characterized in that: include: S1, adding the molten rubber into the extrusion tube (301) through the feeding tube (302); S2, the driving spiral plate (306) rotates to push the rubber material spirally into the molding cavity between the molding outer tube (303) and the molding inner tube (401); S3. The molten adhesive is formed between the outer molding tube (303) and the inner molding tube (401) to obtain a tube body hot melt adhesive with a hollow interior.

10. The hot melt adhesive processed by the method according to claim 9, characterized in that: The hot melt adhesive is a hollow tube structure.

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