Cotton paper double-sided tape production equipment and production method thereof

Abstract

The invention discloses cotton paper double-sided adhesive tape production equipment and a production method thereof, and relates to the technical field of double-sided adhesive tape production, the cotton paper double-sided adhesive tape production equipment comprises a mounting base, and a feeding assembly, a glue coating mechanism, a heating mechanism, a release paper attaching mechanism and a winding mechanism are sequentially mounted on the mounting base; the glue coating mechanism comprises a first coating assembly, a second coating assembly, a horizontal guide assembly and a horizontal re-pressing assembly, the first coating assembly and the horizontal re-pressing assembly are located below the cotton paper base material, the second coating assembly and the horizontal guide assembly are located above the cotton paper base material, and the first coating assembly and the second coating assembly are distributed in a staggered mode; the bottom surface glue of the base material is coated in the first step, the glue bonding time is prolonged, the horizontal re-pressing assembly is arranged, the pressing force on the glue is further increased, upward permeation bonding of the bottom surface glue is promoted, and the bottom surface glue is subjected to pressure equalizing synchronously, so that the glue which flows and accumulates is uniformly distributed again.

Description

Technical Field

[0001] The invention relates to the technical field of double-sided adhesive tape production, and in particular to a cotton paper double-sided adhesive tape production device and a production method thereof. Background Art

[0002] Cotton paper double-sided tape is an industrial adhesive tape with cotton paper as the base material. It is made by evenly coating high-performance acrylic pressure-sensitive adhesive on both sides and compounding release paper.

[0003] The production process of cotton paper double-sided tape is a delicate and orderly process, which mainly includes the steps of substrate preparation-gluing process-drying and curing-winding. The traditional gluing process is single-sided gluing, such as Chinese patent (CN101857784A). However, after single-sided gluing, the substrate needs to be turned over and the other side needs to be glued again, which is cumbersome and inefficient. In view of this, engineers changed the traditional gluing method and used the gluing roller as the glue liquid conduction medium to change the traditional single-sided two-time gluing and realize the one-time double-sided gluing of the raw cloth, which greatly improved the production efficiency of double-sided tape.

[0004] Among them, Chinese patent (CN113801585B) discloses a production line and preparation process of double-sided adhesive tape, which includes a raw material feeding mechanism, an adhesive liquid coating mechanism, a high-temperature heating mechanism, a release paper attaching mechanism, a traction compacting mechanism and a tape slitting mechanism which are arranged in sequence; the adhesive coating mechanism includes a frame, a first adhesive roller and a second adhesive roller which are arranged on the frame and are parallel to each other, the first adhesive roller and the second adhesive roller are tangent to each other and leave a gap for the raw material cloth to pass through, the first adhesive roller is located at the top of the raw material cloth and fits the surface of the raw material cloth, the second adhesive roller is located at the bottom of the raw material cloth and fits the surface of the raw material cloth, the circumferential sides of the first adhesive roller and the second adhesive roller are respectively in contact with adhesive coating rollers which are rotatably connected to the frame, a adhesive coating groove is arranged on the frame, and the adhesive coating rollers are immersed in the adhesive coating groove, which greatly improves the adhesive coating processing efficiency of the double-sided adhesive tape.

[0005] However, the above technical solution still has the following problems: since the glue is applied to both sides of the substrate simultaneously, the glue applied on the bottom of the substrate is affected by its own weight, resulting in insufficient upward penetration of the glue into the tiny pores of the cotton paper when the glue is applied to the surface of the cotton paper, and the bonding force between the glue and the cotton paper is not strong. Furthermore, due to the weak bonding force, the glue is prone to relative flow during the curved coating process, resulting in uneven coating. Summary of the invention

[0006] The object of the present invention is to provide a cotton paper double-sided tape production device and a production method thereof, so as to solve the problem that the glue coated on the bottom of the substrate is affected by its own weight, resulting in insufficient upward penetration of the glue into the tiny pores of the cotton paper when the glue is coated on the surface of the cotton paper, and the bonding force between the glue and the cotton paper is not strong. Furthermore, due to the weak bonding force, the glue is prone to relative flow during the curved coating stroke, resulting in uneven coating.

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

[0008] A cotton paper double-sided tape production device comprises a mounting base, on which a feeding assembly, a glue coating mechanism, a heating mechanism, a release paper attaching mechanism and a winding mechanism are sequentially mounted, and a dustproof shell is arranged outside the glue coating mechanism and the heating mechanism, and a cotton paper substrate is wound around the feeding assembly;

[0009] The glue coating mechanism includes a first coating component, a second coating component, a horizontal guiding component and a horizontal re-pressing component, wherein the first coating component and the horizontal re-pressing component are located below the cotton paper substrate, and the second coating component and the horizontal guiding component are located above the cotton paper substrate. Along the input direction of the cotton paper substrate, they are the horizontal guiding component, the first coating component, the second coating component and the horizontal re-pressing component in sequence, and the first coating component and the second coating component are alternately distributed.

[0010] As a further solution of the present invention: the horizontal guide assembly includes two assembly brackets 1 connected to the dustproof shell, and a horizontal guide roller is rotatably arranged between the two assembly brackets 1.

[0011] As a further solution of the present invention: the first coating component includes two mounting brackets, a gluing roller is rotatably mounted between the two mounting brackets, a connecting bracket is arranged on one side of the mounting bracket close to the feeding component, a glue box is cooperatively connected to the bottom of the two connecting brackets, a gluing roller is rotatably mounted on the two connecting brackets, the bottom end of the gluing roller extends into the interior of the glue box, and the gluing roller is tangent to the gluing roller.

[0012] As a further solution of the present invention: a glue inlet pipe is arranged on one side of the glue box, the glue inlet pipe is connected with the external glue box, and a flow control valve is arranged on the glue inlet pipe.

[0013] As a further solution of the present invention: a recovery box is arranged at the bottom of the mounting bracket, a scraper is installed in the recovery box, the scraper is arranged obliquely, and the top of the scraper is in contact with the axial surface of the glue roller.

[0014] As a further solution of the present invention: the second coating component includes two mounting brackets 2, a glue-applying roller 2 is rotatably mounted between the two mounting brackets 2, a glue-applying roller 2 is rotatably connected to the top of the mounting bracket 2 close to the feeding component, and a glue box 2 is connected to the bottom of the mounting bracket 2, the bottom end of the glue-applying roller 2 extends into the interior of the glue box 2, and the glue-applying roller 2 is tangent to the glue-applying roller 2, a glue inlet pipe 2 is arranged on one side of the glue box 2, the glue inlet pipe 2 is connected to the external glue box, and a flow control valve 2 is arranged on the glue inlet pipe 2.

[0015] As a further solution of the present invention: a recycling box 2 and a scraper 2 are provided on one side of the second glue roller close to the heating mechanism. The second recycling box is connected to the inner wall of the dustproof shell. The second scraper is arranged in the second recycling box and is inclined. The head of the second scraper is in contact with the axial surface of the second glue roller.

[0016] As a further solution of the present invention: the horizontal re-pressing component includes a base arranged on a mounting base, and assembly brackets two are symmetrically arranged on both sides of the base, horizontal re-pressing rollers are rotatably arranged on the two assembly brackets two, and a re-pressing motor is arranged on the assembly bracket two on one side, and the re-pressing motor is connected to the horizontal re-pressing roller.

[0017] As a further solution of the present invention: a heat exchange chamber 1 is opened inside the first glue roller, a heat exchange chamber 2 is opened inside the second glue roller, and both the heat exchange chamber 1 and the heat exchange chamber 2 are connected by a pipeline, which is connected to the external heating water tank through a rotating joint, a heat equalization chamber 1 is opened inside the first glue roller, and a heat equalization chamber 2 is opened inside the second glue roller.

[0018] As a further solution of the present invention: a method for producing a double-sided cotton paper tape, using the above-mentioned double-sided cotton paper tape production equipment, comprises the following steps:

[0019] Step 1: First, pull the cotton paper substrate out from the feeding assembly, pass through the glue coating mechanism, the heating mechanism and the release paper attaching mechanism in sequence, and finally roll it up on the winding mechanism;

[0020] Step 2: Open flow control valve 1 and flow control valve 2, inject glue into glue box 1 and glue box 2, start glue coating motor 1 and glue coating motor 2 synchronously, drive glue coating roller 1 and glue coating roller 2 to rotate, transfer glue, start rotating motor 1 and rotating motor 2 synchronously, drive glue coating roller 1 and glue coating roller 2 to rotate, and start the re-pressing motor to drive the horizontal re-pressing roller to re-press;

[0021] Step 3: While the glue is being coated, the winding motor drives the winding roller to rewind. The cotton paper substrate coated with glue is heated and dried by the heating mechanism, and then passes through the release paper attachment mechanism to attach the release paper, forming a tape master tape that is rewound on the winding roller;

[0022] Step 4: When the coating structure needs to be heated and insulated, circulating hot water is introduced into the glue roller 1 and the glue roller 2 through the external heating water tank, and hot water is injected into the glue roller 1 and the glue roller 2 to perform the coating operation.

[0023] Beneficial effects of the present invention:

[0024] The present invention coats glue on the bottom surface and the top surface of the cotton paper substrate respectively by the first coating component and the second coating component to achieve double-sided gluing, and further, the first coating component lifts the cotton paper substrate upward from the bottom, and the highest point of the upward protrusion of the cotton paper substrate is higher than the horizontal direction of the cotton paper substrate input, and similarly, the second coating component lifts the cotton paper substrate from top to bottom, and the highest point of the downward protrusion of the cotton paper substrate is lower than the horizontal direction of the cotton paper substrate input, and the extrusion contact area is increased by adjusting the extrusion position, and the combination of the glue and the cotton paper substrate is promoted, and the bottom surface glue is further re-pressed by the horizontal re-pressing component to avoid the effect of the glue's own weight on the combination of the glue and the cotton paper substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall internal structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the present invention after removing the dust cover;

[0028] Figure 3 It is a structural schematic diagram of the glue coating mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the position structure of the transmission gear 1 and the transmission gear 2 of the present invention;

[0030] Figure 5 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0032] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle A area;

[0033] Figure 8 It is a structural diagram of embodiment 2 of the present invention.

[0034] In the figure: 1. mounting base; 11. dust cover; 2. feeding assembly; 21. feeding mounting frame; 22. raw material roller; 23. cotton paper substrate; 3. glue coating mechanism; 31. first coating assembly; 311. mounting bracket 1; 312. glue roller 1; 3121. heat exchange chamber 1; 313. connecting bracket; 314. glue box 1; 315. flow control valve 1; 316. glue roller 1; 3161. heat equalization chamber 1; 317. transmission gear 1; 318. recovery box 1; 319. scraper 1; 32. second coating assembly; 321. mounting bracket 2; 322. glue roller 2; 3221. heat exchange chamber 2; 323 , glue box two; 324, glue coating roller two; 3241, heat equalization chamber two; 325, flow control valve two; 326, transmission gear two; 327, connecting vertical plate; 328, recovery box two; 329, scraper two; 33, horizontal guide component; 331, assembly bracket one; 332, horizontal guide roller; 34, horizontal re-pressing component; 341, base; 342, assembly bracket two; 343, horizontal re-pressing roller; 4, heating mechanism; 41, high temperature heating box; 5, release paper attachment mechanism; 51, release bracket; 52, release paper take-up roller; 6, take-up mechanism; 61, take-up bracket; 62, take-up roller; 63, tape mother tape. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1-Figure 8 As shown, the present invention provides a cotton paper double-sided tape production device. On the basis of not changing the double-sided gluing process, the bottom surface glue of the substrate is first coated to increase the glue bonding time, and a horizontal re-pressing component 34 is provided to further increase the pressing force on the glue, promote the upward penetration and bonding of the bottom surface glue, and simultaneously press the bottom surface glue evenly so that the glue that has flowed and accumulated is evenly distributed again.

[0037] Embodiment 1

[0038] Specifically, Figure 1 As shown, the production equipment of the present invention includes a mounting base 1 for integrating various mechanisms to make production more orderly. A feeding component 2, a glue coating mechanism 3, a heating mechanism 4, a release paper attaching mechanism 5 and a winding mechanism 6 are sequentially mounted on the mounting base 1, and a dustproof cover 11 is arranged outside the glue coating mechanism 3 and the heating mechanism 4 to prevent external dust or impurities from falling into the glue coating mechanism 3 and affecting the coating quality of the product.

[0039] More specifically, if Figure 2 As shown, the above-mentioned feeding assembly 2 includes two feeding mounting frames 21 mounted on the mounting base 1, and the two feeding mounting frames 21 are rotatably provided with raw material rollers 22, and the raw material rollers 22 are wound with cotton paper substrates 23. The width of the cotton paper substrate 23 is selected according to the processing requirements, and a driving motor 1 (not shown in the figure) is installed on one side of the feeding mounting frame 21. The raw material rollers 22 are driven by the driving motor 1 to convey at a constant speed, so as to avoid excessive pulling of the cotton paper by the winding mechanism 6 and damage to the cotton paper substrate 23.

[0040] Furthermore, the above-mentioned heating mechanism 4 includes a high-temperature heating box 41, and the high-temperature heating box 41 is fixed to the mounting base 1 through support rods at the four corners of the bottom. The high-temperature heating box 41 is a conventional device for heating the coated tape in the prior art and will not be described in detail here.

[0041] Furthermore, the above-mentioned release paper attaching mechanism 5 includes two release brackets 51 installed on the mounting base 1, and the two release brackets 51 are rotatably provided with release paper winding rollers 52, and the release paper winding rollers 52 are wound with release paper, which are used to cover the cotton paper coated with glue with release paper to form a tape master tape 63, and the release paper winding rollers 52 also need to be driven by a driving motor 2 (arranged on one side of the release bracket 51, not shown in the figure) to ensure that the release paper and the tape coated with glue are stably attached.

[0042] Furthermore, the above-mentioned winding mechanism 6 includes two winding brackets 61, and the two winding brackets 61 are detachably mounted on the mounting base 1. Winding rollers 62 are rotatably arranged on the two winding brackets 61, and a winding motor (not shown in the figure) is arranged on one side of the winding bracket 61. The winding motor is connected to the winding roller 62 to drive the winding roller 62 to move, so as to wind up the tape mother tape 63 after the release paper is attached.

[0043] What needs to be described in detail is that Figure 2-Figure 7 As shown, the above-mentioned glue coating mechanism 3 includes a first coating component 31, a second coating component 32, a horizontal guiding component 33 and a horizontal re-pressing component 34, wherein the first coating component 31 and the horizontal re-pressing component 34 are located below the cotton paper substrate 23, and the second coating component 32 and the horizontal guiding component 33 are located above the cotton paper substrate 23. Along the input direction of the cotton paper substrate 23 (i.e., from the feeding component 2 toward the winding mechanism 6), the horizontal guiding component 33, the first coating component 31, the second coating component 32 and the horizontal re-pressing component 34 are arranged in sequence. The first coating component 31 and the second coating component 32 are staggeredly distributed to realize the glue coating operation on the upper and lower surfaces of the cotton paper substrate 23.

[0044] The inputted tissue paper substrate 23 is horizontally guided into the subsequent coating mechanism by the horizontal guiding assembly 33, and the tissue paper substrate 23 is supported to avoid affecting the input stage.

[0045] The first coating component 31 and the second coating component 32 are used to apply glue to the bottom and top surfaces of the cotton paper substrate 23 respectively, so as to achieve double-sided gluing. Furthermore, the first coating component 31 lifts the cotton paper substrate 23 upward from the bottom, and the highest point of the upward protrusion of the cotton paper substrate 23 is higher than the horizontal direction of the input of the cotton paper substrate 23. Similarly, the second coating component 32 lifts the cotton paper substrate 23 from top to bottom, and the highest point of the downward protrusion of the cotton paper substrate 23 is lower than the horizontal direction of the input of the cotton paper substrate 23. By adjusting the extrusion position, the extrusion contact area is increased to promote the combination of glue and the cotton paper substrate 23. The bottom surface glue is further re-pressed by the horizontal re-pressing component 34 to avoid the effect of the dead weight of the glue on the combination of the glue and the cotton paper substrate 23.

[0046] It should be noted that if Figure 3 As shown, the horizontal guide assembly 33 includes two assembly brackets 331 connected to the dustproof shell 11, and a horizontal guide roller 332 is rotatably arranged between the two assembly brackets 331. The horizontal guide roller 332 horizontally introduces the horizontally inputted cotton paper substrate 23 to maintain the inputted horizontal state, wherein the horizontal guide roller 332 can rotate freely, reduce the friction with the cotton paper substrate 23, and avoid causing wear to the cotton paper substrate 23;

[0047] Furthermore, if Figure 3 , Figure 6 and Figure 7 As shown, the first coating assembly 31 is located at the bottom of the cotton paper substrate 23 and is located near one end of the feeding assembly 2, and can preferentially coat the bottom surface of the cotton paper substrate 23 with glue. Its specific structure includes two mounting brackets 311 mounted on the mounting base 1, a glue roller 312 is rotatably mounted between the two mounting brackets 311, and a rotating motor 1 (not shown in the figure) is arranged on one side of the mounting bracket 311, and the output shaft of the rotating motor 1 is connected to a transmission gear 1 317, and the transmission gear 1 317 is meshedly connected with a connecting shaft at one end of the glue roller 312 (as shown in the figure). Figure 4As shown), power is transmitted, and connecting brackets 313 are symmetrically arranged at both ends of the mounting bracket 311 close to the feeding component 2, and the bottoms of the two connecting brackets 313 are cooperatively connected with a glue box 314, and a glue coating roller 316 is rotatably arranged on the two connecting brackets 313, and the bottom end of the glue coating roller 316 extends into the interior of the glue box 314, and the glue coating roller 316 is tangent to the upper glue roller 312, and the glue in the glue box 314 is brought out by the glue coating roller 316 and transmitted to the upper glue roller 312, and the glue is applied to the bottom of the cotton paper substrate 23 by the upper glue roller 312, so as to realize the bottom gluing process of double-sided gluing.

[0048] A glue coating motor (not shown in the figure) is also provided on one side of the connecting bracket 313, and the glue coating motor drives a glue coating roller 316 to move. A glue inlet pipe is provided on one side of the glue box 314, and the glue inlet pipe is connected to the external glue box to realize the glue transportation. Furthermore, a flow control valve 315 can be provided on the glue inlet pipe to control the flow rate of the glue.

[0049] Furthermore, if Figure 6 and Figure 7 As shown, a recovery box 318 is further provided at the bottom of the above-mentioned mounting bracket 311, and a scraper 319 is installed in the recovery box 318. The scraper 319 is tilted, and the tilting direction is toward the heating mechanism 4. The top of the scraper 319 is in contact with the axial surface of the glue roller 312, and is used to scrape off the residual glue after coating by the glue roller 312, so as to avoid the residual glue affecting the transfer of new glue on the glue roller 316, and the residual glue is mixed with the new glue, which affects the fluidity of the glue and causes uneven coating.

[0050] Furthermore, if Figure 3 , Figure 6 and Figure 7 As shown, the second coating assembly 32 is located on the top of the cotton paper substrate 23 and is located on the side close to the heating mechanism 4. It is offset and delayed relative to the first coating assembly 31 to apply glue to the top surface of the cotton paper substrate 23, and the second coating assembly 32 is tangent to the first coating assembly 31, and a gap is left in the middle for the cotton paper substrate 23 to pass through. Its specific structure includes two mounting brackets 321 mounted on the mounting base 1, a glue roller 322 is rotatably mounted between the two mounting brackets 321, and a rotating motor 2 (not shown in the figure) is provided on one side of the mounting bracket 321, and the output shaft of the rotating motor 2 is connected to a transmission gear 2 326 (as shown in the figure). Figure 4As shown), the transmission gear 2 326 is meshedly connected with the connecting shaft of the glue roller 2 322 to transmit power, and the top of the mounting bracket 221 close to the feeding component 2 is also rotatably connected to the glue roller 2 324, and the bottom is connected to the glue box 2 323, the bottom end of the glue roller 2 324 extends into the glue box 2 323, and the glue roller 2 324 is tangent to the glue roller 2 322, the glue in the glue box 2 323 is brought out by the glue roller 2 324, and is transferred to the glue roller 2 322, and then the glue is applied to the top of the cotton paper substrate 23, realizing the top gluing process of double-sided gluing.

[0051] A second glue coating motor (not shown in the figure) is also provided on the second mounting bracket 321, and the second glue coating motor drives the second glue coating roller 324 to rotate. Furthermore, a second glue inlet pipe is also provided on one side of the second glue box 323, and the second glue inlet pipe is connected to the external glue box to realize the delivery of glue. At the same time, a second flow control valve 325 can also be provided on the second glue inlet pipe to control the flow of glue entering the second glue box 323.

[0052] Since the glue roller 1 312 and the glue roller 2 322 are used to apply glue to the bottom surface and the top surface of the cotton paper substrate 23 respectively, when the glue roller 1 312 is coating the bottom surface of the cotton paper substrate 23, due to the influence of the glue's own weight, the glue coating amount is not as sufficient as the glue roller 2 322 coating the top surface (the glue on the top surface is further promoted to combine with the cotton paper substrate 23 by its own weight). Therefore, for the glue coating amount, the bottom surface and the top surface of the cotton paper substrate 23 need to be set separately, and the glue amount transferred by the bottom surface glue roller 1 316 needs to be larger. Therefore, the amount of external glue entering is accurately controlled by setting the flow control valve 1 315 and the flow control valve 2 325, the rotation speed of the glue roller 1 316 is increased, and the amount of glue transferred is increased, so that the glue coating thickness of the bottom and top surfaces of the cotton paper substrate 23 is close to uniform.

[0053] Furthermore, if Figure 7 As shown, the second glue roller 322 is provided with a recycling box 328 and a scraper 329 on one side close to the heating mechanism 4, wherein the recycling box 328 is connected to the inner wall of the dustproof shell 11 by connecting the vertical plate 327, and the scraper 329 is arranged in the recycling box 328 and is inclined, and the inclination direction is upward. The head of the scraper 329 is in contact with the axial surface of the second glue roller 322 to scrape off the glue remaining on the second glue roller 322 after coating, so as to prevent the residual glue from affecting the transfer of new glue on the second glue roller 324, and the residual glue is mixed with the new glue to affect the fluidity of the glue, resulting in uneven coating.

[0054] In this embodiment, Figure 3 and Figure 7As shown, glue roller 1 316 is located at the glue input end of upper glue roller 1 312 (upper glue roller 1 312 rotates clockwise, and the left side is the glue input end), and glue roller 2 324 is located at the glue input end of upper glue roller 2 322 (upper glue roller 2 322 rotates counterclockwise, and the left side is the glue input end). Therefore, the positions of glue roller 1 316 and glue roller 2 324 are to shorten the travel of transferring glue to the glue coating, reduce the cooling of glue, and affect the effect of glue coating (glue coating requires a certain temperature to make the glue have a certain fluidity).

[0055] In this embodiment, the first glue roller 312 and the second glue roller 322 squeeze the tissue paper substrate 23 up and down, thereby increasing the contact area between the first glue roller 312 and the second glue roller 322 and the tissue paper substrate 23, so that the glue transferred by the first glue roller 316 and the second glue roller 324 can better penetrate into the tiny pores of the tissue paper under sufficient squeezing, forming a mechanical locking effect, thereby enhancing the bonding force between the glue and the tissue paper.

[0056] In addition, in this embodiment, the glue roller 312 for coating the bottom surface of the tissue paper substrate 23 is arranged in the front, thereby extending the bonding time between the bottom surface glue and the tissue paper substrate 23 and reducing the problem of insufficient penetration caused by the weight of the bottom surface glue.

[0057] Furthermore, if Figure 3 and Figure 7 As shown, the above-mentioned horizontal re-pressing component 34 includes a base 341 arranged on the mounting base 1, and assembly brackets 342 are symmetrically arranged on both sides of the base 341. Horizontal re-pressing rollers 343 are rotatably arranged on the two assembly brackets 342, and a re-pressing motor (not shown in the figure) is arranged on the assembly bracket 342 on one side. The horizontal re-pressing roller 343 is driven by the re-pressing motor to rotate at a transmission speed, and the glue coated on the bottom surface of the cotton paper substrate 23 is further re-pressed to enhance the bonding force between the glue and the cotton paper substrate 23, and the uneven glue caused by the relative flow of the glue during the bending coating stroke of the bottom surface of the cotton paper substrate 23 is evenly pressed, so as to further promote the uniform coating of the bottom glue.

[0058] Embodiment 2

[0059] like Figure 7 and Figure 8 As shown, in this embodiment, based on the first embodiment, a heat exchange chamber 1 3121 is opened inside the first glue roller 312, and a heat exchange chamber 2 3221 is opened inside the second glue roller 322, and both the heat exchange chamber 1 3121 and the heat exchange chamber 2 3221 are connected with pipes, and the pipes are connected to the external heating water tank through a rotary joint. Hot water with a set temperature flows in the heat exchange chamber 1 3121 and the heat exchange chamber 2 3221 to ensure the temperature of the first glue roller 312 and the second glue roller 322, so as to prevent the glue from cooling in the first glue roller 312 and the second glue roller 322 and affecting the effect of coating on the tissue paper substrate 23.

[0060] Furthermore, a heat equalizing chamber 3161 can be opened inside the glue coating roller 316, and a heat equalizing chamber 3241 can be opened inside the glue coating roller 324, and hot water of a set temperature can be injected without circulating the hot water. By taking advantage of the large specific heat capacity of water, heat can be extracted from the glue and the upper and lower glue rollers 312 and 322 to make the surface temperatures of the glue coating rollers 316 and 324 uniform, thereby avoiding uneven surface temperatures at different positions, causing deviations in glue fluidity and affecting the uniformity of glue coating.

[0061] This embodiment uses water bath heating (glue roller 1 312 and glue roller 2 322 with hot water) and water bath temperature equalization (glue coating roller 1 316 and glue coating roller 2 324 with hot water), combined with the above-mentioned scraping structure (scraper 1 319 and scraper 2 329), and the set position of glue coating roller 1 316 and glue coating roller 2 324 to form a coating optimization system, which makes coating more uniform and improves coating quality.

[0062] Embodiment 3

[0063] This embodiment discloses a method for producing a double-sided cotton paper tape, using the production equipment of the first or second embodiment, comprising the following steps:

[0064] Step 1: First, the cotton paper substrate 23 is pulled out from the feeding assembly 2, passes through the glue coating mechanism 3, the heating mechanism 4 and the release paper attaching mechanism 5 in sequence, and finally is rolled up on the winding mechanism 6;

[0065] Step 2: Open the flow control valve 1 315 and the flow control valve 2 325, inject glue into the glue box 1 314 and the glue box 2 323, start the glue coating motor 1 and the glue coating motor 2 synchronously, drive the glue coating roller 1 316 and the glue coating roller 2 324 to rotate, transfer glue, start the rotating motor 1 and the rotating motor 2 synchronously, drive the glue roller 1 312 and the glue roller 2 322 to rotate, apply glue, and start the re-pressing motor to drive the horizontal re-pressing roller 343 to re-press;

[0066] Step 3: While the glue is being coated, the winding motor drives the winding roller 62 to wind up, and the cotton paper substrate 23 coated with glue is heated and dried by the heating mechanism 4, and then passes through the release paper attaching mechanism 5, where the release paper is attached to form a tape master tape 63 which is wound up on the winding roller 62.

[0067] Step 4: When the coating structure needs to be heated and insulated, circulating hot water is introduced into the glue roller 1 312 and the glue roller 2 322 through an external heating water tank, and hot water is injected into the glue roller 1 316 and the glue roller 2 324 to perform the coating operation.

[0068] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0069] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A cotton paper double-sided tape production equipment, characterized in that: The invention comprises a mounting base (1), on which a feeding assembly (2), a glue coating mechanism (3), a heating mechanism (4), a release paper attaching mechanism (5) and a winding mechanism (6) are sequentially mounted, and a dustproof shell (11) is arranged outside the glue coating mechanism (3) and the heating mechanism (4), and a cotton paper substrate (23) is wound around the feeding assembly (2); The glue coating mechanism (3) comprises a first coating component (31), a second coating component (32), a horizontal guiding component (33) and a horizontal re-pressing component (34), wherein the first coating component (31) and the horizontal re-pressing component (34) are located below the cotton paper substrate (23), and the second coating component (32) and the horizontal guiding component (33) are located above the cotton paper substrate (23); along the input direction of the cotton paper substrate (23), the horizontal guiding component (33), the first coating component (31), the second coating component (32) and the horizontal re-pressing component (34) are arranged in sequence; the first coating component (31) and the second coating component (32) are arranged in an alternating manner.

2. The cotton paper double-sided tape production equipment according to claim 1, characterized in that: The horizontal guide assembly (33) comprises two assembly brackets (331) connected to the dustproof shell (11), and a horizontal guide roller (332) is rotatably arranged between the two assembly brackets (331).

3. The cotton paper double-sided tape production equipment according to claim 1, characterized in that: The first coating component (31) comprises two mounting brackets (311), a glue roller (312) is rotatably mounted between the two mounting brackets (311), a connecting bracket (313) is arranged on the side of the mounting bracket (311) close to the feeding component (2), a glue box (314) is cooperatively connected at the bottom of the two connecting brackets (313), a glue coating roller (316) is rotatably mounted on the two connecting brackets (313), the bottom end of the glue coating roller (316) extends into the interior of the glue box (314), and the glue coating roller (316) is tangent to the glue coating roller (312).

4. The cotton paper double-sided tape production equipment according to claim 3, characterized in that: A glue inlet pipe is arranged on one side of the glue box (314), the glue inlet pipe is connected with the external glue box, and a flow control valve (315) is arranged on the glue inlet pipe.

5. The cotton paper double-sided tape production equipment according to claim 3, characterized in that: A recovery box (318) is arranged at the bottom of the mounting bracket (311), and a scraper (319) is installed in the recovery box (318). The scraper (319) is arranged at an angle, and the top of the scraper (319) is in contact with the axial surface of the adhesive roller (312).

6. The cotton paper double-sided tape production equipment according to claim 3, characterized in that: The second coating component (32) includes two mounting brackets (321), between which a glue-applying roller (322) is rotatably mounted, and a glue-applying roller (324) is rotatably connected to the top of the mounting bracket (321) close to the feeding component (2), and a glue box (323) is connected to the bottom of the mounting bracket (321), the bottom end of the glue-applying roller (324) extends into the interior of the glue box (323), and the glue-applying roller (324) is tangent to the glue-applying roller (322), and a glue inlet pipe (32) is arranged on one side of the glue box (323), the glue inlet pipe (32) is connected to an external glue box, and a flow control valve (325) is arranged on the glue inlet pipe (325).

7. The cotton paper double-sided tape production equipment according to claim 6, characterized in that: A second recycling box (328) and a second scraper (329) are provided on one side of the second glue roller (322) close to the heating mechanism (4); the second recycling box (328) is connected to the inner wall of the dustproof shell (11); the second scraper (329) is arranged in the second recycling box (328) and is inclined; the head of the second scraper (329) is in contact with the axial surface of the second glue roller (322).

8. The cotton paper double-sided tape production equipment according to claim 1, characterized in that: The horizontal re-pressing assembly (34) comprises a base (341) arranged on a mounting base (1), assembly brackets (342) are symmetrically arranged on both sides of the base (341), horizontal re-pressing rollers (343) are rotatably arranged on the two assembly brackets (342), and a re-pressing motor is arranged on the assembly bracket (342) on one side, and the re-pressing motor is connected to the horizontal re-pressing roller (343).

9. The cotton paper double-sided tape production equipment according to claim 6, characterized in that: A heat exchange chamber 1 (3121) is provided inside the first glue roller (312), a heat exchange chamber 2 (3221) is provided inside the second glue roller (322), and both the heat exchange chamber 1 (3121) and the heat exchange chamber 2 (3221) are connected by a pipeline, and the pipeline is connected to an external heating water tank through a rotating joint. A heat equalization chamber 1 (3161) is provided inside the first glue roller (316), and a heat equalization chamber 2 (3241) is provided inside the second glue roller (324).

10. A method for producing a double-sided cotton paper tape, characterized in that: The production device for producing a double-sided adhesive tape of cotton paper according to any one of claims 1 to 9 comprises the following steps: Step 1: First, the cotton paper substrate (23) is pulled out from the feeding assembly (2), passed through the glue coating mechanism (3), the heating mechanism (4) and the release paper attaching mechanism (5) in sequence, and finally rolled up on the winding mechanism (6); Step 2: Open flow control valve 1 (315) and flow control valve 2 (325), inject glue into glue box 1 (314) and glue box 2 (323), start glue coating motor 1 and glue coating motor 2 synchronously, drive glue coating roller 1 (316) and glue coating roller 2 (324) to rotate, transfer glue, start rotating motor 1 and rotating motor 2 synchronously, drive glue application roller 1 (312) and glue application roller 2 (322) to rotate, apply glue, and start the re-pressing motor to drive horizontal re-pressing roller (343) to re-press; Step 3: While the glue is being coated, the winding motor drives the winding roller (62) to wind up, and the cotton paper substrate (23) coated with glue is heated and dried by the heating mechanism (4), and then passed through the release paper attachment mechanism (5), where the release paper is attached to form a tape master tape (63) which is wound up on the winding roller (62); Step 4: When the coating structure needs to be heated and insulated, circulating hot water is introduced into the glue roller 1 (312) and the glue roller 2 (322) through an external heating water tank, and hot water is injected into the glue roller 1 (316) and the glue roller 2 (324) to perform the coating operation.

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