A pre-treatment mechanism for adhesive bonding

Abstract

The utility model relates to back glue pasting production technical field, concretely relates to a kind of pretreatment mechanism for back glue pasting, including be located on the semi-enclosed box of conveying frame;Rotary is located on the supporting roller of conveying frame, it is below the semi-enclosed box, and plastic sheet passes between semi-enclosed box and supporting roller;Spray part is located at the outside of semi-enclosed box, it is used to evenly spray cleaning fluid on the glue face of plastic sheet;Wiping part is located in semi-enclosed box.The utility model is sequentially arranged spray part and wiping part by along the plastic sheet conveying direction and using semi-enclosed box to separate the two, such as can avoid dust outside to interfere with the plastic sheet after wiping, and cotton towel belt of contact part with plastic sheet can be slowly replaced, reduce the influence of humidity on the wiping effect of cotton towel belt, cooperate air-drying piece to air-dry cotton towel belt of contact part with plastic sheet, further reduce the influence of humidity on the wiping effect of cotton towel belt.

Description

Technical Field

[0001] This utility model relates to the field of adhesive backing production technology, and in particular to a pretreatment mechanism for adhesive backing bonding. Background Technology

[0002] Adhesive backing is a double-sided adhesive used to bond electronic screens and electronic casings. During the production process, relatively rigid plastic sheets are generally used as the carrier substrate. Initially, it is a roll of plastic sheet, requiring two rollers mounted on a conveyor frame to work together. The plastic sheet roll is released from one roller, and one end of the plastic sheet passes sequentially through a pre-treatment mechanism, an adhesive application mechanism, a laminating mechanism, and a cutting mechanism. Finally, the waste end of the plastic sheet is detachably fixed to the other roller and wound up. The coordinated operation of the two rollers maintains the stability of the plastic sheet conveying process.

[0003] Before bonding adhesive to rigid plastic sheets, their surfaces may accumulate dust or dirt during transport. To prevent this dust or dirt from affecting the subsequent adhesive bonding effect, pre-treatment is necessary. Existing pre-treatment mechanisms for adhesive bonding spray a cleaning agent onto the surface of the plastic sheet to be cleaned before bonding, and then use a roller wrapped with cleaning wipes to clean it. In this technology, the cleaning effect of the cleaning wipes gradually decreases as more cleaning solution is absorbed during wiping, making it unsuitable for long-term use. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a pretreatment mechanism for adhesive bonding, so as to solve the problem that the wiping effect of cleaning cotton towels will gradually decrease as more cleaning liquid is absorbed during wiping, making it difficult to use for a long time.

[0005] To achieve the above objectives, this utility model provides a pretreatment mechanism for adhesive bonding, including a semi-enclosed box disposed on a conveyor frame; Rotate the idler rollers mounted on the conveyor frame, which are located below the semi-enclosed box, and pass the plastic sheet between the semi-enclosed box and the idler rollers; The spray section located outside the semi-enclosed box is used to evenly spray cleaning liquid onto the adhesive surface of the plastic sheet. The wiping section, located inside a semi-enclosed box, is used to wipe the cleaning solution sprayed onto the adhesive surface of the plastic sheet; The drying component, located in a semi-enclosed box, is used to dry the wiping area between the wiping part and the plastic sheet.

[0006] Preferably, the wiping unit includes two flat support rollers fixed side by side in a semi-enclosed box along the conveying direction of the plastic sheet. The semi-enclosed box is rotatably provided with an output drum and a take-up drum, and a drive component is used to drive the output drum and the take-up drum to rotate at the same linear speed. One end of the cotton towel strip outside the output drum passes downward to the bottom of one of the flat support rollers, and horizontally to the bottom of the other flat support roller, and then upward to the take-up drum and is fixed on the take-up drum on the side away from the output drum.

[0007] Preferably, the driving component includes a drive wheel fixed to the same end of the output drum and the take-up drum, and a drive belt is sleeved between the grooves on the outside of the two drive wheels for driving one of the drive wheels to rotate.

[0008] Preferably, the flat support roller is located above the idler roller, and the bottom of the flat support roller is flush with the bottom of the semi-enclosed box.

[0009] Preferably, the conveying direction of the cotton towel strip is opposite to the conveying direction of the plastic sheet, and the conveying speed of the cotton towel strip is less than the conveying speed of the plastic sheet.

[0010] Preferably, the air-drying component includes an air outlet duct fixed in a semi-enclosed box and a hot air blower for continuously conveying warm airflow into the air outlet duct. The air outlet of the air outlet duct is inclined towards the space between two flat support rollers, and the bottom of the air outlet duct is higher than the top of the flat support rollers.

[0011] Preferably, the spray section and the semi-enclosed box are distributed sequentially along the conveying direction of the plastic sheet.

[0012] Preferably, the spray unit includes a temporary storage box fixed to the outside of the semi-enclosed box. Several connecting pipes are connected side by side to the bottom of the temporary storage box. A splash guard is fixed between the bottom ends of the several connecting pipes. An electromagnetic spray head is fixed between the bottom end face of the connecting pipe and the inside of the splash guard. A supply component for conveying cleaning fluid into the temporary storage box is provided outside the temporary storage box.

[0013] The beneficial effects of this utility model are: This invention arranges a spray section and a wiping section sequentially along the conveying direction of the plastic sheet and separates them with a semi-enclosed box. This avoids external dust from interfering with the wiped plastic sheet and allows for the slow replacement of the cotton towel strip at the contact point with the plastic sheet, reducing the impact of humidity on the wiping effect of the cotton towel strip. In addition, the drying component dries the cotton towel strip at the contact point with the plastic sheet and can keep the humidity of the cotton towel strip within a relatively low range for a long time, further reducing the impact of humidity on the wiping effect of the cotton towel strip. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ; Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ; Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ; Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 .

[0016] The diagram is marked as follows: 1. Spraying section; 11. Temporary storage tank; 12. Connecting pipe; 13. Splash shield; 14. Electromagnetic spray head; 15. Supply unit; 2. Semi-enclosed box; 3. Idler roller; 4. Wiping section; 41. Outgoing drum; 42. Rewinding drum; 43. Flat support roller; 44. Drive unit; 5. Drying unit; 51. Air outlet duct; 52. Hot air blower. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1 to 3As shown, a pretreatment mechanism for adhesive bonding includes a semi-enclosed box 2 mounted on a conveyor frame. The semi-enclosed box 2 is a bottomless box, and a plastic sheet passes horizontally through the bottom of the semi-enclosed box 2 and covers the bottom of the semi-enclosed box 2.

[0020] Rotate the idler roller 3 located on the conveyor frame, which is below the semi-enclosed box 2, and the plastic sheet passes between the semi-enclosed box 2 and the idler roller 3. The idler roller 3 is used to horizontally lift the plastic sheet passing through the bottom of the semi-enclosed box 2, thereby improving the levelness of the plastic sheet during conveying.

[0021] The spray section 1 is located outside the semi-enclosed box 2. The spray section 1 and the semi-enclosed box 2 are distributed sequentially along the conveying direction of the plastic sheet. It is used to spray the cleaning liquid evenly on the adhesive surface of the plastic sheet so as to reduce the adhesion between the plastic sheet and stubborn stains and reduce the difficulty of subsequent cleaning.

[0022] The wiping section 4, located inside the semi-enclosed box 2, is used to wipe the cleaning liquid sprayed onto the adhesive surface of the plastic sheet. At the same time, it can simultaneously wipe away the stains on the plastic sheet, improving the cleanliness of the adhesive surface of the plastic sheet.

[0023] The drying component 5, located inside the semi-enclosed box 2, is used to dry the wiping area between the wiping part 4 and the plastic sheet, so that the humidity of the wiping area is always kept at a relatively low level. This prevents watermarks from appearing on the adhesive surface of the plastic sheet after wiping, which would affect the subsequent adhesive bonding effect. During long-term use, this greatly reduces the impact of humidity on the cleaning effect.

[0024] like Figures 1 to 4As shown, the wiping unit 4 includes two flat support rollers 43 fixed side-by-side inside the semi-enclosed box 2 along the conveying direction of the plastic sheet. The flat support rollers 43 are located above the support rollers 3, and the bottom of the flat support rollers 43 is flush with the bottom of the semi-enclosed box 2. The semi-enclosed box 2 has an output drum 41 and a take-up drum 42 rotatably arranged inside. A large amount of cotton towel is wrapped around the outside of the output drum 41, and the width of the cotton towel is greater than the width of the plastic sheet. A drive member 44 is used to drive the output drum 41 and the take-up drum 42 to rotate at the same linear speed. The drive member 44 includes components fixed to the output drum. The drive wheels 41 and 42 are located at the same end. A drive belt is fitted between the grooves on the outside of the two drive wheels to drive a servo motor that rotates one of the drive wheels. This design ensures that the linear speeds of the output drum 41 and the take-up drum 42 are the same, thus maintaining a stable conveying speed of the cotton towel. One end of the cotton towel outside the output drum 41 passes downwards to the bottom of one of the flat support rollers 43, then horizontally to the bottom of the other flat support roller 43, and finally upwards to the take-up drum 42 and is fixed to the take-up drum 42 away from the output drum. On one side of the roll 41, the conveying direction of the cotton towel is opposite to that of the plastic sheet, and the conveying speed of the cotton towel is less than that of the plastic sheet. When the drive unit 44 drives the output roll 41 and the take-up roll 42 to rotate slowly at the same linear speed, the cotton towel wrapped around the outside of the output roll 41 gradually unwinds, and the take-up roll 42 simultaneously winds up the unwinding cotton towel. This keeps the tension of the cotton towel between the output roll 41 and one of the nearby flat support rollers 43, between the two flat support rollers 43, and between the take-up roll 42 and one of the nearby flat support rollers stable. The cotton cloth and plastic sheet are kept in a relatively taut state. At this time, the opposite surfaces of the cotton cloth and plastic sheet between the two flat support rollers 43 are in contact with each other, so as to form relative displacement between the cotton cloth and plastic sheet in opposite directions. This improves the wiping effect of the cotton cloth on the cleaning liquid and stains. In this process, the cotton cloth with higher humidity during wiping is gradually transported away to avoid the wiping effect being affected by high humidity. At the same time, it can also gradually carry away the stains wiped off the wiping position to avoid excessive accumulation of stains in the wiping position, which would affect the subsequent wiping effect.

[0025] like Figures 1 to 3As shown, the air-drying component 5 includes an air outlet 51 fixed inside the semi-enclosed box 2 and a hot air blower 52 for continuously supplying warm airflow into the air outlet 51. A ventilation pipe connects the hot air blower 52 and one end of the air outlet 51. The air outlet of the air outlet 51 is inclined towards the space between the two flat support rollers 43, and the bottom of the air outlet 51 is higher than the top of the flat support rollers 43. This allows the warm airflow to be blown from top to bottom at a relatively fast speed onto the cotton towel strip between the two flat support rollers 43, accelerating the evaporation rate of the cleaning liquid on the cotton towel strip, reducing the humidity of the cotton towel strip at the wiping position, and preventing watermarks from appearing on the plastic sheet after wiping, which would affect the subsequent adhesive bonding effect and quality. As the amount of air blown into the semi-enclosed box 2 gradually increases, under the influence of the pressure difference, the airflow leaks out horizontally from the bottom of the semi-enclosed box 2 and the gap reserved between the plastic sheet, preventing the air pressure inside the semi-enclosed box 2 from being too high and affecting the horizontality and wiping effect of the plastic sheet within the semi-enclosed box 2.

[0026] like Figures 1 to 4 As shown, the spray unit 1 includes a temporary storage tank 11 fixed to the outside of the semi-enclosed box 2. Several connecting pipes 12 are connected side-by-side to the bottom of the temporary storage tank 11. A splash guard 13 is fixed between the bottom ends of the connecting pipes 12. The distance between the bottom of the splash guard 13 and the plastic sheet passing beneath it is greater than 5mm and less than 10mm. An electromagnetic spray head 14 is fixed between the bottom end face of the connecting pipes 12 and the inside of the splash guard 13. A supply component 15 for conveying cleaning fluid into the temporary storage tank 11 is provided outside the tank. The supply component 15 includes a fixed... The packaging box is located outside the conveyor frame. A water pump is installed inside the packaging box. A liquid delivery pipe is connected between the output end of the water pump and the temporary storage tank 11. The water pump intermittently supplies the cleaning liquid stored in the packaging box to the temporary storage tank 11, so that the liquid level in the temporary storage tank 11 is always maintained at more than half of its internal height. The electromagnetic spray head 14 continuously sprays the cleaning liquid onto the plastic film to be coated during the plastic film conveying process, so as to achieve comprehensive spraying of the plastic film to be coated, so that the wiping part 4 can thoroughly clean the plastic film to be coated.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0028] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pretreatment mechanism for adhesive bonding, comprising a semi-enclosed box (2) disposed on a conveyor frame, characterized in that: Rotate the idler roller (3) located on the conveyor frame, which is below the semi-enclosed box (2), and the plastic sheet passes between the semi-enclosed box (2) and the idler roller (3); The spray section (1) located outside the semi-enclosed box (2) is used to spray the cleaning liquid evenly onto the adhesive surface of the plastic sheet. The wiping section (4) located inside the semi-enclosed box (2) is used to wipe the cleaning liquid sprayed on the adhesive surface of the plastic sheet; The drying component (5) is located in the semi-enclosed box (2) and is used to dry the wiping area between the wiping part (4) and the plastic sheet.

2. The pretreatment mechanism for adhesive bonding according to claim 1, characterized in that, The wiping section (4) includes two flat support rollers (43) fixed side by side in the semi-enclosed box (2) along the plastic sheet conveying direction. The semi-enclosed box (2) is rotatably provided with a roll-out drum (41) and a roll-up drum (42). A drive unit (44) is used to drive the roll-out drum (41) and the roll-up drum (42) to rotate at the same linear speed. One end of the cotton towel strip outside the roll-out drum (41) passes downward to the bottom of one of the flat support rollers (43), and horizontally to the bottom of the other flat support roller (43), and then upward to the roll-up drum (42) and is fixed on the side of the roll-up drum (42) away from the roll-out drum (41).

3. The pretreatment mechanism for adhesive bonding according to claim 2, characterized in that, The drive unit (44) includes a drive wheel fixed to the same end of the take-up drum (41) and the take-up drum (42), and a drive belt is sleeved between the grooves on the outside of the two drive wheels for driving one of the drive wheels to rotate.

4. The pretreatment mechanism for adhesive bonding according to claim 2, characterized in that, The flat support roller (43) is located above the support roller (3), and the bottom of the flat support roller (43) is flush with the bottom of the semi-enclosed box (2).

5. The pretreatment mechanism for adhesive bonding according to claim 2, characterized in that, The cotton towel is conveyed in the opposite direction to the plastic sheet, and the conveying speed of the cotton towel is less than the conveying speed of the plastic sheet.

6. The pretreatment mechanism for adhesive bonding according to claim 2, characterized in that, The air drying component (5) includes an air outlet duct (51) fixed in a semi-enclosed box (2) and a hot air blower (52) for continuously supplying warm airflow into the air outlet duct (51). The air outlet of the air outlet duct (51) is inclined towards the space between two flat support rollers (43), and the bottom of the air outlet duct (51) is higher than the top of the flat support rollers (43).

7. The pretreatment mechanism for adhesive bonding according to claim 1, characterized in that, The spray section (1) and the semi-enclosed box (2) are distributed sequentially along the conveying direction of the plastic sheet.

8. The pretreatment mechanism for adhesive bonding according to claim 7, characterized in that, The spray unit (1) includes a temporary storage box (11) fixed to the outside of the semi-enclosed box (2). Several connecting pipes (12) are connected side by side at the bottom of the temporary storage box (11). A splash shield (13) is fixed between the bottom ends of the several connecting pipes (12). An electromagnetic spray head (14) is fixed between the bottom end face of the connecting pipe (12) and the inside of the splash shield (13). A supply unit (15) for conveying cleaning liquid into the temporary storage box (11) is provided on the outside of the temporary storage box (11).

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