Glue melting device in hot melt glue laminating machine
By introducing a preheated glue storage box into the hot melt adhesive coating machine, preheating and storing the hot melt adhesive, and transporting it to the main heating box for heating, the problem that the hot melt adhesive cannot match the adhesion speed is solved, and efficient use of hot melt adhesive and continuous production are achieved.
Patent Information
- Application Number
- CN202420492116.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-14
AI Technical Summary
When the hot melt adhesive coating machine processes paper buckets of different sizes, the melting speed of the hot melt adhesive cannot match the adhesive speed, resulting in a reduced production efficiency.
A melting device including a preheated glue storage box is designed, and the melting speed of the hot melt adhesive is increased by preheating and storing the hot melt adhesive in the preheated glue storage box and transporting it to the main heating box for further heating.
It realizes efficient melting and transport of hot melt adhesive, can match the adhesion speed of paper buckets of different sizes, improves production efficiency, and prevents the problem of hot melt adhesive blockage.
Smart Images
Figure CN222568251U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hot melt adhesive laminating machine, in particular to a glue melting device in the hot melt adhesive laminating machine. Background Art
[0002] When producing paper barrels, it is necessary to paste label paper with customer trademarks or product information on the outer wall of the paper barrel. A hot melt adhesive laminating machine is needed to paste the label paper on the paper barrel. The heating box in the hot melt adhesive laminating machine melts the solid hot melt adhesive into liquid adhesive, which then flows into the machine base and is applied to the surface of the label paper by extrusion or spraying. Then the label paper can be pasted on the paper barrel. However, the volume of the heating box in the hot melt adhesive laminating machine is fixed, and the heating temperature of the hot melt adhesive cannot be too high, so the melting speed of the hot melt adhesive is stable. When applying labels to paper barrels with smaller volumes, the amount of adhesive obtained by the hot melt adhesive at the specified melting speed can match the subsequent pasting speed. When applying labels to paper barrels with larger volumes, the amount of adhesive obtained by the hot melt adhesive at the specified melting speed cannot keep up with the subsequent pasting speed, which requires frequent downtime and waiting, reducing production efficiency. Utility Model Content
[0003] The purpose of the utility model is to provide a glue melting device in a hot melt adhesive laminating machine, which melts and stores the hot melt adhesive by additionally setting up a preheating glue storage box, and then transports the preheated liquid hot melt adhesive to a main heating box for heating, thereby increasing the melting speed of the hot melt adhesive, thereby matching the pasting speed of paper barrels of different sizes and realizing continuous production.
[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: the glue melting device in the hot melt adhesive laminating machine comprises: a machine base, a main heating box is arranged on the machine base, the upper end of the main heating box is open, a preheating glue storage box is arranged above the main heating box, an electric heating plate with a temperature sensor is arranged on the preheating glue storage box, a discharge pipe is arranged on the right side wall of the preheating glue storage box, the discharge end of the discharge pipe is located just above the inner cavity of the main heating box, and the preheating glue storage box is provided with a discharge plate. A number of material blocking rods are arranged in the inner cavity at equal intervals from front to back, the spacing between the material blocking rods is not larger than the inner diameter of the discharge pipe, the spacing between the material blocking rods and the right inner wall of the preheating glue storage box is not larger than the inner diameter of the discharge pipe, a mounting frame is arranged on the right side wall of the preheating glue storage box, a cylinder is placed horizontally on the mounting frame, a seal that can be blocked on the discharge pipe is arranged on the piston rod of the cylinder, a feed port is opened on the top wall of the preheating glue storage box, and a transparent cover is closed on the feed port.
[0005] Furthermore, in the aforementioned glue melting device of the hot melt adhesive laminating machine, an L-shaped limiting plate is provided on the right side wall of the preheating glue storage box, a long limiting hole is opened on the horizontal arm of the L-shaped limiting plate, a long screw is threadedly connected to the seal, and the long screw extends into the long limiting hole.
[0006] Furthermore, for the glue melting device in the aforementioned hot melt adhesive laminating machine, the plugging means includes: a connecting sleeve and an aluminum plug. A threaded hole and a mounting hole are provided on the connecting sleeve. The threaded hole is threadedly connected to the piston rod. The aluminum plug is press-fitted into the mounting hole by interference fit. A locking bolt is threadedly connected between the aluminum plug and the connecting sleeve. A long screw rod passes through the connecting sleeve and is threadedly connected to the aluminum plug. A first locking nut is threadedly connected to the long screw rod.
[0007] Furthermore, for the glue melting device in the aforementioned hot melt adhesive laminating machine, the plugging end of the aluminum plug is in a conical shape. A V-shaped groove is provided on the inner side wall of the discharging end of the discharging pipe. The taper of the V-shaped groove is the same as that of the plugging end.
[0008] Furthermore, for the glue melting device in the aforementioned hot melt adhesive laminating machine, the material blocking rod is a hollow metal pipe. The bottom of the material blocking rod is welded to the bottom inner wall of the preheating glue storage tank. A sealing plate is welded to the top of the material blocking rod.
[0009] Furthermore, for the glue melting device in the aforementioned hot melt adhesive laminating machine, a plurality of air vent holes are evenly distributed on the top wall of the preheating glue storage tank. A dust suction hood is provided on the top wall of the preheating glue storage tank. The dust suction hood covers all the air vent holes. The dust suction hood is connected to a dust collector.
[0010] Furthermore, for the glue melting device in the aforementioned hot melt adhesive laminating machine, the transparent cover is made of tempered glass. Two bow-shaped handles are provided on the transparent cover. The connection structure between the bow-shaped handle and the transparent cover is as follows: at the bottom ends of the two ends of the bow-shaped handle, a screw rod is respectively provided. Two through holes are provided on the transparent cover. The two screw rods on the bow-shaped handle respectively pass through the two through holes and are threadedly connected to the second locking nuts. A first sealing gasket is provided between the bottom of the bow-shaped handle and the transparent cover. A second sealing gasket is provided between the second locking nut and the transparent cover.
[0011] Furthermore, for the connection structure between the preheating glue storage tank and the electric heating plate: a U-shaped plate is welded on the bottom outer wall of the preheating glue storage tank. An installation groove is formed between the U-shaped plate and the preheating glue storage tank. The electric heating plate is arranged in the installation groove. A heat-conducting silica gel pad is provided between the electric heating plate and the bottom outer wall of the preheating glue storage tank. Heat-insulating asbestos is laid between the electric heating plate and the inner wall of the U-shaped plate.
[0012] Further, for the glue melting device in the aforementioned hot melt adhesive laminating machine, the connection structure between the preheating glue storage tank and the machine base is as follows: an I-shaped flange is welded to the bottom wall of the C-shaped plate. The upper flange end of the I-shaped flange is welded to the C-shaped plate. A number of threaded through holes are evenly distributed in a circumferential manner on the upper flange end of the I-shaped flange. Light holes aligned with the threaded through holes one by one are provided on the bottom wall of the C-shaped plate. Set screws are threadedly connected in the threaded through holes. The set screws pass upward through their respective corresponding light holes and then abut against the asbestos to apply a tightening force to the electric heating plate. A connection seat is provided on the left side wall of the machine base. A flat flange is provided on the connection seat. The lower flange end of the I-shaped flange abuts against the flat flange and is connected by connection bolts.
[0013] Further, for the glue melting device in the aforementioned hot melt adhesive laminating machine, heat insulation layers are coated on the left side and the front, rear side walls of the heat storage glue tank.
[0014] The advantages of the present utility model are as follows: In the preheating glue storage tank, the hot melt adhesive can be preheated and melted and stored, and then the hot melt adhesive is transported to the main heating tank in a high-temperature liquid state for heating, thereby improving the melting speed of the hot melt adhesive in the main heating tank, so as to match the pasting speed of paper barrels of different sizes, and thus realize continuous production; moreover, when there is a large volume of hot melt adhesive in the preheating glue storage tank, the material blocking rod can block it to prevent the discharge pipe from being blocked and affecting the glue output. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the glue melting device in the hot melt adhesive laminating machine described in the present utility model.
[0016] Figure 2 is Figure 1 a schematic structural diagram of the preheating glue storage tank in a top view direction in
[0017] Figure 3 is Figure 1 a partial enlarged structural diagram in the A direction in
[0018] Figure 4 is Figure 1 a partial enlarged structural diagram in the B direction in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following further illustrates the technical solutions described in the present utility model in conjunction with the accompanying drawings and preferred embodiments.
[0020] As Figure 1 to Figure 4As shown in the figure, the glue melting device in the hot melt adhesive laminating machine of the present utility model includes: a machine base 1, on which a main heating box 11 is provided. The upper end of the main heating box 11 is open. Since the liquid hot melt adhesive in the main heating box 11 will soon be sent into the machine base 1 for coating, it is not easy to generate peculiar smell. A preheating glue storage box 2 is provided above the main heating box 11. An electric heating plate 21 with a temperature sensor is provided on the preheating glue storage box 2. The heating temperature of the electric heating plate 21 can be controlled and monitored through the temperature sensor. The connection structure between the preheating glue storage box 2 and the electric heating plate 21 is as follows: a U-shaped plate 3 is welded on the bottom outer wall of the preheating glue storage box 2, and an installation groove is formed between the U-shaped plate 3 and the preheating glue storage box 2. The electric heating plate 21 is arranged in the installation groove. A heat-conducting silica gel pad 211 is arranged between the electric heating plate 21 and the bottom outer wall of the preheating glue storage box 2, and heat-insulating asbestos 212 is laid between the electric heating plate 21 and the inner wall of the U-shaped plate 3. The connection structure between the preheating glue storage box 2 and the machine base 1 is as follows: an I-shaped flange 31 is welded on the bottom wall of the U-shaped plate 3. The upper flange end of the I-shaped flange 31 is welded to the U-shaped plate 3. A number of threaded through holes are evenly distributed in a circumferential direction on the upper flange end of the I-shaped flange 31. Light holes aligned with the threaded through holes one by one are provided on the bottom wall of the U-shaped plate 3. A set screw 32 is threadedly connected in the threaded through hole. The set screw 32 passes upward through its corresponding light hole and abuts against the asbestos 212 to apply a tightening force to the electric heating plate 21, so that the electric heating plate 21 is fixed in the installation groove. A connection seat 12 is provided on the left side wall of the machine base 1. A flat flange 121 is provided on the connection seat 12. The lower flange end of the I-shaped flange 31 abuts against the flat flange 121 and is connected by a connecting bolt 122.
[0021] A number of air holes 22 are evenly distributed on the top wall of the preheating glue storage box 2, and a dust hood 4 is arranged on the top wall of the preheating glue storage box 2, the dust hood 4 covers all the air holes 22, and the dust hood 4 is connected to the dust collector. Since the hot melt adhesive needs to be preheated into a liquid in the preheating glue storage box 2 before being stored, and the hot melt adhesive will produce odor under long-term heating, the odor in the preheating glue storage box 2 can be removed by opening the dust collector regularly to prevent the odor generated during the production process from affecting the staff. A feed port is also provided on the top wall of the preheating glue storage box 2, and a transparent cover 5 is covered on the feed port, and the transparent cover 5 is made of tempered glass. The amount of glue in the preheating glue storage box 2 can be visually observed through the transparent cover 5. When adding materials, the dust collector removes odors regularly, and the staff opens the transparent cover 5. When the rubber storage box 2 is preheated, there will not be a large amount of odor in the preheating glue storage box 2 to affect the staff. Two bow-shaped handles 51 are arranged on the transparent cover 5, and the connection structure between the bow-shaped handles 51 and the transparent cover 5 is as follows: a screw 52 is respectively arranged at the bottom of both ends of the bow-shaped handle 51, and two through holes are arranged on the transparent cover 5. The two screws 52 on the bow-shaped handle 51 pass through the two through holes and are threadedly connected with the second locking nut 53. A first sealing rubber pad 54 is arranged between the bottom of the bow-shaped handle 51 and the transparent cover 5, and a second sealing rubber pad 55 is arranged between the second locking nut 53 and the transparent cover 5. The first sealing rubber pad 54 and the second sealing rubber pad 55 are arranged to prevent the transparent cover 51 made of tempered glass from directly contacting the second locking nut 53 or the bow-shaped handle 51 and causing it to break.
[0022] The left side and the front and rear side walls of the preheating glue storage box 2 are all coated with a heat insulation layer 20. Since these three side walls are places that are easily touched by the staff, coating the three side walls with the heat insulation layer 20 can prevent the staff from being scalded by the preheating glue storage box 2. A discharge pipe 23 is arranged on the right side wall of the preheating glue storage box 2. The discharge end of the discharge pipe 23 is located directly above the inner cavity 11 of the main heating box, and a V-shaped groove is arranged on the inner wall of the discharge end of the discharge pipe 23. A plurality of material blocking rods 24 are arranged at equal intervals from front to back in the inner cavity of the preheating glue storage box 2. The spacing between the material blocking rods 24 is not greater than the inner diameter of the discharge pipe 23, and the spacing between the material blocking rods 24 and the right inner wall of the preheating glue storage box 2 is not greater than the discharge The inner diameter of the material tube 23 is to prevent a large volume of unmelted hot-melt adhesive that exceeds the inner diameter of the discharge tube 23 from being blocked in the discharge tube 23, resulting in poor discharge of the adhesive. The material blocking rod 24 is a hollow metal tube. The use of a hollow metal tube can reduce weight. The bottom of the material blocking rod 24 is welded to the bottom inner wall of the preheating glue storage box 2, and a sealing plate is welded on the top of the material blocking rod 24. In this way, liquid hot-melt adhesive will not enter the inner cavity of the material blocking rod 24. A mounting frame 6 is provided on the right side wall of the preheating glue storage box 2, and a cylinder 61 is horizontally placed on the mounting frame 6. A seal that can be blocked in the discharge tube 23 is provided on the piston rod of the cylinder 61. The seal includes: a connecting sleeve 62 and an aluminum plug 63. A threaded hole and a mounting hole are provided on 62, and the threaded hole is threadedly connected to the piston rod in the cylinder 61, and the aluminum plug 63 is pressed into the mounting hole through an interference fit. The blocking end of the aluminum plug 63 is conical, and the taper of the blocking end is the same as the taper of the V-shaped groove of the discharge pipe 23. When the aluminum plug 63 is blocked on the discharge pipe 23, the sealing performance between the aluminum plug and the discharge pipe 23 can be greatly improved. A plurality of locking bolts 64 are circumferentially arranged between the aluminum plug 63 and the connecting sleeve 62, and a long screw 65 is arranged between the top of the connecting sleeve 62 and the top of the aluminum plug 63. The long screw 65 passes through the connecting sleeve 62 and is threadedly connected to the aluminum plug 63, and a threaded connection is provided on the long screw 65. The first locking nut 66 will lock the long screw 65. An L-shaped limiting plate 25 is arranged on the right side wall of the preheating glue storage box 2. A long limiting hole 251 is opened on the horizontal arm of the L-shaped limiting plate 25. The long screw 65 on the plug extends into the long limiting hole 251. When the cylinder 61 drives the plug to seal or open, the long screw 65 on the plug will be limited by the long limiting hole 251, thereby limiting the stroke of the plug, preventing the cylinder 61 from driving the plug to excessively seal on the discharge pipe 23, causing damage to the aluminum plug 63 or the discharge pipe 23 and affecting the sealing, and preventing the piston rod of the cylinder 61 from excessively moving and interfering with the mounting frame 6.
[0023] During production, first place the solid hot melt adhesive in the preheating adhesive storage box 2, then start the electric heating plate 21, and control the temperature of the electric heating plate 21 to be 10 to 15°C lower than the optimal melting temperature of the hot melt adhesive, so that the melted liquid hot melt adhesive can maintain good stability during long-term storage, and then cover the transparent cover 5. The preheating adhesive storage box 2 will heat up under the heating of the electric heating plate 21, and the hot melt adhesive will melt into liquid state when it encounters heat in the preheating adhesive storage box 2. Then control the main heating box 11 to heat to the optimal melting temperature of the hot melt adhesive, and then start the cylinder 61 to drive the seal away from the discharge pipe 23, and the high-temperature adhesive liquid in the preheating adhesive storage box 2 will It flows into the main heating box 11 through the discharge pipe 23 and is heated again by the main heating box 11. When there is enough liquid hot melt adhesive in the main heating box 11, the discharge pipe 23 is blocked. Since the hot melt adhesive has been heated to a liquid state in the preheating glue storage box 2, it can be quickly heated to the optimal melting temperature after entering the main heating box 11. When coating is required, the main heating box 11 will allow the liquid hot melt adhesive at the optimal melting temperature to enter the machine base 1 for coating. During the coating process, if the amount of liquid hot melt adhesive in the main heating box 11 is too little, it will be added to the main heating box 11 from the preheating glue storage box 2.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.
Claims
1. The hot melt adhesive laminating machine includes: The machine base is provided with a main heating box on it. The upper end of the main heating box is open. It is characterized in that: a preheating glue storage box is arranged above the main heating box. An electric heating plate with a temperature sensor is arranged on the preheating glue storage box. A discharge pipe is arranged on the right side wall of the preheating glue storage box. The discharge end of the discharge pipe is located directly above the inner cavity of the main heating box. A number of material blocking rods are arranged at equal intervals from front to back in the inner cavity of the preheating glue storage box. The distance between the material blocking rods is not greater than the inner diameter of the discharge pipe. The distance between the material blocking rod and the right inner side wall of the preheating glue storage box is not greater than the inner diameter of the discharge pipe. An installation frame is arranged on the right side wall of the preheating glue storage box. A cylinder is horizontally arranged on the installation frame. A plugging member capable of blocking the discharge pipe is arranged on the piston rod of the cylinder. A feed port is opened on the top wall of the preheating glue storage box. A transparent cover is covered on the feed port.
2. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: An L-shaped limiting plate is arranged on the right side wall of the preheating glue storage box. A long strip limiting hole is opened on the cross arm of the L-shaped limiting plate. A long screw rod is threadedly connected to the plugging member. The long screw rod extends into the long strip limiting hole.
3. The adhesive melting device in the hot melt adhesive laminating machine according to claim 2, characterized in that: The plugging member includes: a connecting sleeve and an aluminum plug. A threaded hole and an installation hole are arranged on the connecting sleeve. The threaded hole is threadedly connected to the piston rod. The aluminum plug is press-fitted into the installation hole by interference fit. A locking bolt is threadedly connected between the aluminum plug and the connecting sleeve. The long screw rod passes through the connecting sleeve and is threadedly connected to the aluminum plug. A first locking nut is threadedly connected to the long screw rod.
4. The adhesive melting device in the hot melt adhesive laminating machine according to claim 3, characterized in that: The plugging end of the aluminum plug is in a conical shape. A V-shaped groove is arranged on the inner side wall of the discharge end of the discharge pipe. The taper of the V-shaped groove is the same as the taper of the plugging end.
5. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: The material blocking rod is a hollow metal pipe. The bottom of the material blocking rod is welded to the bottom inner wall of the preheating glue storage box. A sealing plate is welded on the top of the material blocking rod.
6. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: A number of air vent holes are evenly distributed on the top wall of the preheating glue storage box. A dust suction hood is arranged on the top wall of the preheating glue storage box. The dust suction hood covers all the air vent holes. The dust suction hood is connected to a dust collector.
7. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: The transparent cover is made of tempered glass material. Two bow-shaped grips are arranged on the transparent cover. The connection structure between the bow-shaped grip and the transparent cover is: a screw rod is respectively arranged at the bottom ends of both ends of the bow-shaped grip. Two through holes are arranged on the transparent cover. The two screw rods on the bow-shaped grip respectively pass through the two through holes and are threadedly connected to a second locking nut. A first sealing gasket is arranged between the bottom of the bow-shaped grip and the transparent cover. A second sealing gasket is arranged between the second locking nut and the transparent cover.
8. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: The connection structure between the preheating glue storage box and the electric heating plate is: a U-shaped plate is welded on the bottom outer wall of the preheating glue storage box. An installation groove is formed between the U-shaped plate and the preheating glue storage box. The electric heating plate is arranged in the installation groove. A heat-conducting silica gel pad is arranged between the electric heating plate and the bottom outer wall of the preheating glue storage box. Heat-insulating asbestos is laid between the electric heating plate and the inner wall of the U-shaped plate.
9. The adhesive melting device in the hot melt adhesive laminating machine according to claim 8, characterized in that: The connection structure between the preheating glue storage tank and the machine base is as follows: An I-shaped flange is welded to the bottom wall of the U-shaped plate. The upper flange end of the I-shaped flange is welded to the U-shaped plate. A number of threaded through holes are evenly distributed in a circumferential manner on the upper flange end of the I-shaped flange. Light holes aligned with the threaded through holes one by one are provided on the bottom wall of the U-shaped plate. Set screws are threadedly connected in the threaded through holes. The set screws pass upward through their respective corresponding light holes and then abut against the asbestos to apply a tightening force to the electric heating plate. A connection seat is provided on the left side wall of the machine base. A flat flange is provided on the connection seat. The lower flange end of the I-shaped flange abuts against the flat flange and is connected by connection bolts.
10. The adhesive melting device in the hot melt adhesive laminating machine according to claim 1, characterized in that: Heat insulation layers are covered on the left side, front and rear side walls of the heat glue storage tank.