PUR (Polyurethane) hot-melt electronic glue coating machine

Abstract

The utility model discloses a PUR hot melt electronic glue spreader, an adjusting mechanism comprises two extension frames, a moving frame is slidably connected between the two extension frames, one side of the upper end of the moving frame is fixedly connected with a scraping plate, one end of the scraping plate, which is far away from the moving frame, extends towards the inclined upper part, and the other end of the scraping plate is fixedly connected with an adjusting mechanism. An electric heating rod is fixedly installed in the middle of the inner side of the movable frame, a glue outlet is fixedly connected to the position, below the electric heating rod, of the bottom face of the movable frame, a sealing plug is in threaded connection with the inner wall of the glue outlet, cleaning plates are slidably connected to the two sides of the inner wall of the movable frame, and the top end of each cleaning plate extends to the position above the movable frame. The middle of the surface of each cleaning plate penetrates through and is in sliding connection with an electric heating bar, after the scraping plate scrapes hot melt adhesive on the surface of the gluing roller, redundant hot melt adhesive is temporarily stored to the inner side of the moving frame along the scraping plate, the electric heating bar is installed in the moving frame, the hot melt adhesive can be heated, and the hot melt adhesive can be conveniently guided out subsequently.

Description

Technical Field

[0001] This utility model relates to the field of adhesive applicator technology, specifically to a PUR hot melt electronic adhesive applicator. Background Technology

[0002] PUR hot melt electronic adhesive is a high-performance, solvent-free hot melt adhesive based on moisture-curing reactive polyurethane material. It can be easily applied after being heated and melted, and after curing, it has excellent bonding strength, temperature resistance and chemical corrosion resistance. It is an ideal choice for bonding precision components of electronic products. At the same time, it is also suitable for many fields such as automotive, plastics, metals, lenses, and enclosure assembly.

[0003] Existing glue applicators typically drive a glue applicator roller to pick up hot melt adhesive and apply it to the surface of the workpiece in contact with the roller. However, during the picking process, the hot melt adhesive adhering to the surface of the glue applicator roller may be unevenly distributed, and some areas may have a thicker adhesive layer, which is not conducive to the uniformity of the workpiece surface after glue application. To address this issue, a PUR hot melt electronic adhesive applicator is proposed to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is as follows: During the dipping process, the hot melt adhesive adhering to the surface of the coating roller may be unevenly distributed, and the adhesive layer adhering to some areas is thicker, which is not conducive to the uniformity of the workpiece surface after coating.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A PUR hot melt electronic adhesive applicator includes an applicator body, an adjustment mechanism is provided above the applicator body, and the applicator body includes a motor and an electric cylinder;

[0007] The adjustment mechanism includes an extension frame, two extension frames are provided, and a movable frame is slidably connected between the two extension frames. A scraper is fixedly connected to one side of the upper end of the movable frame, and the scraper extends obliquely upward at the end away from the movable frame.

[0008] A heating rod is fixedly installed on the inner middle of the movable frame, and an adhesive outlet is fixedly connected to the bottom surface of the movable frame below the heating rod. A sealing plug is threaded onto the inner wall of the adhesive outlet.

[0009] The inner walls of the mobile frame are slidably connected to cleaning plates on both sides, the top of each cleaning plate extends to the top of the mobile frame, and the middle of the surface of each cleaning plate is slidably connected to a heating rod.

[0010] As a further embodiment of this utility model: a movable rod is connected through the middle of the inner wall of each of the extension frames, and external threads are provided at both ends of the outer wall of the movable rod, and nuts are threaded and tightened at both ends of the outer wall of the movable rod, and the surface of each nut abuts against the extension frame.

[0011] As a further embodiment of this utility model: the middle part of the movable rod is slidably sleeved with both ends of the movable frame, and a push plate is fixedly connected to the outer wall of the movable frame above the movable rod. The top end of the push plate is slidably connected along the inner side of the top of the extension frame, and the top end of the push plate extends to the top of the extension frame.

[0012] As a further embodiment of this utility model: springs are sleeved on both sides of the middle part of the movable rod and on both sides of the movable frame. One side of the spring is fixedly connected to the side of the movable frame, and the other side of the spring is also fixedly connected to the middle surface of the movable rod.

[0013] As a further embodiment of this utility model: the main body of the glue applicator includes a support base, a glue groove is provided in the middle of the top surface of the support base, and columns are fixedly installed on both sides of the top surface of the support base. The lower end of one column is fixedly installed with a motor, the output shaft of the motor is fixedly connected to a glue applicator roller, the other end of the glue applicator roller is rotatably connected to the column, and the lower end of the glue applicator roller extends into the glue groove.

[0014] As a further embodiment of this utility model: both of the outer walls of the two columns are provided with lifting grooves, and an electric cylinder is fixedly connected to the top of one of the columns. The extension end of the electric cylinder is located inside the column, and a lifting block is fixedly connected to the bottom of the extension end of the electric cylinder. Limit bearings are fixedly connected to the upper inner sides of both columns, and a pressure roller is rotatably connected to the inner side of the limit bearing. The pressure roller is located directly above the glue coating roller.

[0015] As a further embodiment of this utility model: the upper ends of the outer surfaces of the two columns are provided with lifting grooves, the front sides of the two lifting blocks pass through the lifting grooves, and the front sides of the lifting blocks are fixedly connected to the extension frame.

[0016] The beneficial effects of this utility model are:

[0017] (1) The present invention provides a movable frame on the outside of the coating roller, and a scraper is installed on the side of the movable frame close to the coating roller. The gap between the scraper and the coating roller can be adjusted. When the coating roller rotates, the scraper scrapes off the excess hot melt adhesive on the surface of the coating roller, which helps to ensure the uniformity of the coating on the workpiece.

[0018] (2) After the scraper removes the hot melt adhesive from the surface of the coating roller, the excess hot melt adhesive is temporarily stored along the scraper to the inside of the moving frame. The moving frame is equipped with an electric heating rod to heat the hot melt adhesive, thereby ensuring its fluidity and facilitating the subsequent export of the hot melt adhesive for later use. In addition, the moving frame can be driven to move up and down by an electric cylinder, thereby moving the lifting frame away from the coating roller, which facilitates the maintenance of the coating roller and the recycling of the hot melt adhesive inside the lifting frame. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the column structure in this utility model;

[0022] Figure 3 This is a side view of the pressure roller structure in this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the movable rod in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the mobile frame from a side view in this utility model.

[0025] In the diagram: 1. Main body of the glue applicator; 101. Support base; 102. Glue tank; 103. Column; 104. Motor; 105. Glue applicator roller; 106. Lifting trough; 107. Electric cylinder; 108. Lifting block; 109. Limit bearing; 110. Pressure roller; 2. Adjustment mechanism; 201. Extension frame; 202. Moving rod; 203. Nut; 204. Push plate; 205. Moving frame; 206. Scraper; 207. Heating rod; 208. Glue outlet; 209. Sealing plug; 210. Cleaning plate; 211. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5As shown, a PUR hot melt electronic adhesive applicator includes an applicator body 1, an adjustment mechanism 2 is provided above the applicator body 1, the applicator body 1 includes a motor 104 and an electric cylinder 107; the adjustment mechanism 2 includes an extension frame 201, two extension frames 201 are provided, and a movable frame 205 is slidably connected between the two extension frames 201, a scraper 206 is fixedly connected to one side of the upper end of the movable frame 205, and the scraper 206 extends obliquely upward at the end away from the movable frame 205; A heating rod 207 is fixedly installed on the inner center of the movable frame 205. An adhesive outlet 208 is fixedly connected to the bottom surface of the movable frame 205 below the heating rod 207, and a sealing plug 209 is threaded onto the inner wall of the adhesive outlet 208. Cleaning plates 210 are slidably connected to both sides of the inner wall of the movable frame 205. The top of each cleaning plate 210 extends above the movable frame 205, and the center of the surface of each cleaning plate 210 penetrates and slidably connects to the heating rod 207. Figure 5 As shown, the hot melt adhesive on the inside of the movable frame 205 and the surface of the heating rod 207 can be scraped off by the cleaning plate 210, and the hot melt adhesive can be pushed to the vicinity of the dispensing port 208.

[0028] Each extension frame 201 has a moving rod 202 connected through its inner wall at the center. Both ends of the outer wall of the moving rod 202 are provided with external threads, and both ends of the outer wall of the moving rod 202 are threadedly tightened with nuts 203. The surface of each nut 203 abuts against the extension frame 201. Figure 2 , Figure 4 As shown, the nut 203 limits the movement rod 202 on both sides of the extension frame 201;

[0029] The middle part of the movable rod 202 is slidably sleeved with both ends of the movable frame 205, and a push plate 204 is fixedly connected to the outer wall of the movable frame 205 above the movable rod 202. The top end of the push plate 204 is slidably connected along the inner side of the top of the extension frame 201, and the top end of the push plate 204 extends to the top of the extension frame 201. Figure 2 As shown, a distance scale can be set on the top of the extension frame 201. The distance that the push plate 204 moves on the distance scale can be used to adjust the gap between the scraper 206 and the glue roller 105.

[0030] Springs 211 are fitted onto the middle of the movable rod 202 and on both sides of the movable frame 205. One side of the spring 211 is fixedly connected to the side of the movable frame 205, and the other side of the spring 211 is fixedly connected to the middle surface of the movable rod 202. Figure 4 As shown, the spring 211 cushions the movable frame 205 to prevent damage to the movable frame 205 after it is subjected to external impact.

[0031] The main body 1 of the glue coating machine includes a support base 101. A glue trough 102 is formed in the middle of the top surface of the support base 101. Columns 103 are fixedly installed on both sides of the top surface of the support base 101. The lower end of one column 103 is fixedly installed to a motor 104. A glue coating roller 105 is fixedly connected to the output shaft of the motor 104. The other end of the glue coating roller 105 is rotatably connected to the column 103, and the lower end of the glue coating roller 105 extends into the glue trough 102. Lifting grooves 106 are formed on the outer walls of both columns 103, and an electric motor is fixedly connected to the top of one column 103. Cylinder 107, the extension end of which is located inside column 103, and a lifting block 108 is fixedly connected to the bottom of the extension end of electric cylinder 107. Limit bearings 109 are fixedly connected to the upper inner sides of both columns 103, and pressure rollers 110 are rotatably connected to the inner sides of the limit bearings 109. The pressure rollers 110 are located directly above the glue-applying roller 105. Lifting grooves 106 are provided on the upper outer surfaces of both columns 103. The front sides of both lifting blocks 108 pass through the lifting grooves 106, and the front sides of the lifting blocks 108 are fixedly connected to the extension frame 201. Figures 1-2 As shown, the electric cylinder 107 can drive the adjustment mechanism 2 to lift and lower as a whole, thereby moving the lifting frame away from the glue coating roller, which facilitates the maintenance of the glue coating roller and the recycling of hot melt adhesive inside the lifting frame.

[0032] The working principle of this utility model:

[0033] When the device is in use, the starting electric cylinder 107 drives the lifting block 108 to descend through the extension end, thereby lowering the entire adjusting mechanism 2. The scraper 206 can approach the glue-applying roller 105. Then, by pushing the moving rod 202, under the support of the spring 211, the moving frame 205 is driven to slide along the inner side of the extension frame 201, thereby adjusting the gap between the scraper 206 and the glue-applying roller 105. When fixing the moving rod 202, tighten the nuts 203 on both sides. The nuts 203 abut against the side of the extension frame 201, thereby fixing the moving rod 202 and the extension frame 201 relative to each other.

[0034] Motor 104 drives the coating roller 105 to rotate. The coating roller 105 picks up the hot melt adhesive inside the glue tank 102 and moves it to the scraper 206. The scraper 206 scrapes off the excess hot melt adhesive. The scraped hot melt adhesive falls down along the scraper 206 into the moving frame 205. During collection, the cleaning plate 210 is pushed to help move the hot melt adhesive to the glue outlet 208, which facilitates subsequent discharge.

[0035] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A PUR hot melt electronic glue coating machine, comprising a coating machine body (1), an adjusting mechanism (2) is arranged above the coating machine body (1), and the coating machine body (1) comprises a motor (104) and an electric cylinder (107); characterized in that The adjusting mechanism (2) comprises two extension frames (201), two extension frames (201) are slidably connected with a moving frame (205), one side of the upper end of the moving frame (205) is fixedly connected with a scraper (206), and the scraper (206) extends obliquely upward away from the moving frame (205); Wherein, the inner side of the moving frame (205) is fixedly installed with an electric heating rod (207), the bottom surface of the moving frame (205) is fixedly connected with a glue outlet (208) below the electric heating rod (207), and the inner wall of the glue outlet (208) is threadedly connected with a sealing plug (209); Wherein, the inner wall of the moving frame (205) is slidably connected with a cleaning plate (210) on both sides, the top end of each cleaning plate (210) extends above the moving frame (205), and the surface of each cleaning plate (210) is penetrated and slidably connected with the electric heating rod (207).

2. The PUR hot-melt electronic adhesive coating machine according to claim 1, characterized in that, The inner wall of each extension frame (201) is penetrated and connected with a moving rod (202), the outer wall of the moving rod (202) is provided with external threads at both ends, and the outer wall of the moving rod (202) is threadedly fastened with a nut (203) at both ends, and the surface of each nut (203) abuts against the extension frame (201).

3. The PUR hot-melt electronic glue coating machine according to claim 2, characterized in that, The middle part of the moving rod (202) is slidably sleeved with the moving frame (205) at both ends, and the outer wall of the moving frame (205) and above the moving rod (202) is fixedly connected with a push plate (204), the top end of the push plate (204) is slidably connected along the inner side of the top of the extension frame (201), and the top end of the push plate (204) extends above the extension frame (201).

4. The PUR hot-melt electronic adhesive coating machine according to claim 3, characterized in that The middle part of the moving rod (202) and both sides of the moving frame (205) are sleeved with springs (211), one side of the spring (211) is fixedly connected with the moving frame (205), and the other side of the spring (211) is fixedly connected with the surface of the middle part of the moving rod (202).

5. The PUR hot-melt electronic adhesive coating machine according to claim 4, characterized in that The coating machine body (1) comprises a support seat (101), a glue groove (102) is formed in the middle of the top surface of the support seat (101), and vertical columns (103) are fixedly installed on both sides of the top surface of the support seat (101); the lower end of one side of the vertical column (103) is fixedly installed with a motor (104), the output shaft of the motor (104) is fixedly connected with a glue coating roller (105), the other end of the glue coating roller (105) is rotatably connected with the vertical column (103), and the lower end of the glue coating roller (105) extends into the glue groove (102).

6. The PUR hot-melt electronic glue coating machine according to claim 5, characterized in that, The outer wall of two columns (103) is provided with lifting grooves (106), and the top end of one side of the column (103) is fixedly connected with an electric cylinder (107). The extension end of the electric cylinder (107) is located in the column (103), and the bottom of the extension end of the electric cylinder (107) is fixedly connected with a lifting block (108). The inner side of the upper end of two columns (103) is fixedly connected with a limiting bearing (109), and the inner side of the limiting bearing (109) is rotatably connected with a compression roller (110). The compression roller (110) is located directly above the rubber coating roller (105).

7. The PUR hot-melt electronic glue coating machine according to claim 6, characterized in that, The outer wall of two columns (103) is provided with lifting grooves (106), two lifting blocks (108) pass through the lifting grooves (106), and the front surface of the lifting block (108) is fixedly connected with an extension frame (201).

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