Cloth tape gluing device of tobacco filter stick forming machine

Abstract

The utility model discloses a cloth tape gluing device of a tobacco filter stick forming machine, and relates to the field of mechanical equipment. The device comprises a supporting plate, a support is arranged on the top face of the supporting plate, an outer frame and the support are vertically assembled in a sliding mode, two glue uniformizing rollers are rotationally erected on the top in the outer frame, a gap is formed between the glue uniformizing rollers, a glue coating roller is rotationally erected at the bottom in the outer frame, and the glue uniformizing rollers make contact with the glue coating roller. The glue conveying assembly comprises a supporting pipe erected on the support, a metal pipe is coaxially supported in the supporting pipe, and an induction heating coil is wound on the outer wall of the metal pipe; an auger blade is rotationally mounted in the metal pipe; and a glue outlet pipe of the metal pipe faces the space between the two glue uniformizing rollers. The glue homogenizing and coating device has the beneficial effects that glue is stirred and conveyed in the metal pipe, heated and subjected to heat preservation, the performance of the glue is maintained, and the glue homogenizing roller is in rolling contact with the glue coating roller, so that the glue is uniformly distributed on the glue coating roller and is uniformly coated on molding paper in a rolling manner, the glue coating uniformity is ensured, and the reverse osmosis of the glue is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment, specifically the field of tobacco filter rod forming machines, and more specifically relates to a tape coating device for a tobacco filter rod forming machine. Background Technology

[0002] A tobacco filter rod forming machine, as a specialized piece of machinery for manufacturing cigarette filters, involves conveying forming paper via a belt during the production process and uniformly applying adhesive to the forming paper. Traditionally, this adhesive application is achieved using rollers, where the adhesive is pumped onto the rollers and then evenly coated onto the forming paper.

[0003] However, during the process of conveying the adhesive from the pump to the rollers, the adhesive temperature often gradually decreases due to environmental interactions. This temperature loss can affect the adhesive's flowability and viscosity. Furthermore, temperature changes can alter the adhesive's rheological properties, thus impacting the uniformity and quality of the coating. In addition, insufficient agitation during transport can cause component separation, which also negatively affects its viscosity and flowability.

[0004] When the adhesive is conveyed to the rollers and rolls along the forming paper, if the adhesive on the rollers is not evenly distributed, the adhesive may seep back into the forming paper under pressure during the coating process. This backflow phenomenon not only affects the forming quality of the filter rods but also increases production costs and reduces overall production efficiency and product quality.

[0005] Therefore, in order to ensure the production quality of filter rods, it is necessary to optimize the delivery and coating process of the adhesive solution, reduce the risk of adhesive solution temperature loss and component separation, and ensure the uniform distribution of the adhesive solution on the rollers, thereby reducing the possibility of back osmosis. Utility Model Content

[0006] This invention addresses the technical problem of adhesive backflow caused by defects in the adhesive delivery and coating process by providing a tape coating device for a tobacco filter rod forming machine. The adhesive is stirred, conveyed, heated, and kept at a constant temperature within a metal tube to maintain its properties. The rolling contact between the distributing roller and the coating roller ensures that the adhesive is evenly distributed on the coating roller and uniformly coated onto the forming paper, guaranteeing coating uniformity and preventing adhesive backflow.

[0007] The technical solution adopted by this utility model is as follows: A tape coating device for a tobacco filter rod forming machine is provided, including a tray with hanging points on the bottom surface and a support on the top surface. A coating roller assembly slides vertically on the support, and a glue conveying component is mounted on the top of the support. The coating roller assembly includes an outer frame, which is vertically slidably assembled with the support. Two equalizing rollers are mounted on the top of the outer frame, with a gap between them. A coating roller is mounted on the bottom of the outer frame, with the equalizing rollers and the coating rollers in contact. A power component is mounted on the front of the outer frame. The force assembly and the glue-applying rollers are driven and installed; the glue-applying assembly includes a support tube mounted on a bracket, a metal tube coaxially supported inside the support tube, both ends of the metal tube protruding from the support tube, and an induction heating coil wound around the outer wall of the metal tube, the induction heating coil being located inside the support tube; an auger blade is rotatably installed inside the metal tube; a cap is fitted on the glue inlet of the metal tube, and a power assembly is fixedly installed on the cap, the power assembly and the auger blades are driven and installed; the glue outlet of the metal tube faces between the two glue-applying rollers, and a glue inlet pipe is connected to the side of the metal tube near the glue inlet.

[0008] The tray is mounted onto the filter rod forming machine via hanging points on its bottom surface. A fabric belt is then guided onto the tray and moves along it, causing the fabric belt to move the shaped cigarette paper tray. When applying glue to the shaped paper using the gluing rollers, the glue is pumped from the pump body to the glue inlet of the metal tube. Then, auger blades transport the glue along the metal tube, continuously stirring it during transport. An induction heating coil wound around the outer wall of the metal tube heats the tube, maintaining the temperature of the glue inside and ensuring the performance of the glue transport process. The glue drips from the glue outlet of the metal tube between two equalizing rollers. The gluing rollers are driven, causing the equalizing rollers to rotate, thus evenly coating the glue onto them. The glue is then rolled onto the shaped paper, ensuring uniform coating, effectively reducing glue backflow, and improving the processing and forming quality of the filter rods.

[0009] To further optimize this technical solution, the bracket is provided with a vertical slide rail, and a slider is slidably installed in the slide rail. The slider is fixedly installed on the back of the outer frame, and the slider is locked to the bracket by means of a locking device.

[0010] The slider on the outer frame slides along the slide rail on the bracket, making it easy to adjust the position of the outer frame. This allows for adjustment of the position of the glue-applying roller, which is then locked in place by a locking device to bring it into contact with the shaping paper for glue application. The structure is simple and the operation is stable.

[0011] To further optimize this technical solution, the locking component includes a bolt threadedly connected to the slider, a washer sleeved on the outside of the bolt, the two ends of the washer abutting against the bracket and the head of the bolt respectively, and anti-slip textures are provided on both ends of the washer.

[0012] After tightening the bolts, the washers are pushed to abut against the outer wall of the bracket. The washers increase the contact area between the bolts and the bracket, improve the bolt locking strength, ensure reliability, and have a simple structure, reducing operating costs and failure rate.

[0013] To further optimize this technical solution, the outer surface of the gasket ring is provided with an adhesive layer, and anti-slip textures are provided on both ends of the adhesive layer.

[0014] When the washer abuts against the bolt head and bracket, the rubber coating reduces wear, and the anti-slip texture on both ends of the rubber coating increases the contact friction, ensuring a secure lock between the slider and the outer frame.

[0015] To further optimize this technical solution, the support tube is horizontally mounted on the bracket with the help of a connector, and support rings are respectively fitted at both ends of the support tube, with the two ends of the support rings respectively fitted to the outer side wall of the metal tube.

[0016] The support tube is horizontally mounted on the bracket. The support tube supports the metal tube through the support rings on both sides, so that there is space between the metal tube and the support tube to accommodate the induction heating coil. The structure is compact and the protection effect is improved.

[0017] To further optimize this technical solution, the connector includes a connector head with an insertion hole, a support tube is inserted into the insertion hole, and the support tube is positioned and assembled with the connector head by means of a positioning component.

[0018] After the connector and bracket are fixedly installed, the support tube is inserted into the socket on the plug, which simplifies the assembly. The support tube is also locked in place on the plug by the positioning piece to ensure the reliability of the support tube.

[0019] To further optimize this technical solution, the positioning component includes a tightening bolt that is threadedly connected to the connector head. The tightening bolt passes through the insertion hole and abuts against the outer wall of the support tube.

[0020] The support tube is positioned on the connector by tightening bolts. The structure is simple, the positioning is reliable, and it is easy to disassemble and maintain, making it flexible to use.

[0021] To further optimize this technical solution, an elbow is connected to the glue outlet of the metal tube, and a glue outlet head is connected to the elbow. The glue outlet head has a constricted structure and faces between the two glue-equalizing rollers.

[0022] The elbow controls the direction of glue dispensing from the metal tube. Glue drips from the nozzle on the elbow between the two equalizing rollers. The nozzle has a tapered opening to ensure the glue drips effectively between the two equalizing rollers, improving stability during use.

[0023] To further optimize this technical solution, the support tube is a quartz tube.

[0024] The support tube is made of quartz tube to provide stable support for the metal tube. Quartz tube has a low thermal conductivity, which gives it a heat insulation effect, protecting the surrounding environment from temperature effects and protecting the filter rod forming machine.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. When applying adhesive to the shaping paper, the adhesive is pumped into the metal tube by the pump body and driven by the auger blades to move along the metal tube. The auger blades stir the adhesive. At the same time, an induction heating coil is wound on the outer wall of the metal tube to heat the metal tube and the adhesive inside the tube, so as to keep the adhesive stable, thereby ensuring the fluidity and uniformity of the adhesive, ensuring its bonding performance, and effectively reducing adhesive backflow.

[0027] 2. After the glue drips between the two distributing rollers, the distributing roller is driven to rotate. The contact between the distributing roller and the distributing roller causes the distributing roller to rotate, thereby spreading the glue evenly on the distributing roller. After contacting the distributing roller, the glue is evenly spread on the distributing roller, thus applying the glue to the shaping paper, completing the glue application process, ensuring the uniformity of glue application, and thus preventing glue backflow.

[0028] 3. The slider slides along the bracket to adjust the support position of the outer frame on the glue-applying roller, thereby adjusting the contact position and contact force between the glue-applying roller and the shaping paper to ensure the glue-applying effect. In addition, by tightening the bolts, the slider makes the washer abut against the bracket, which enhances the firmness of the slider locking on the bracket and ensures the reliability of the glue-applying roller.

[0029] 4. The support tube is installed on the outside of the metal tube to support the metal tube. The support tube also isolates and protects the induction heating coil on the outer wall of the metal tube, preventing damage to it and isolating heat to prevent heat conduction from damaging the equipment and ensuring safe use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the fabric belt adhesive coating device of the tobacco filter rod forming machine in this embodiment;

[0031] Figure 2 This is a schematic diagram of the assembly structure of the tray and the bracket in this embodiment;

[0032] Figure 3 This is a schematic diagram of the assembly structure of the bracket and connector in this embodiment;

[0033] Figure 4 This is a schematic diagram of the back structure of the coating wheel assembly in this embodiment;

[0034] Figure 5 This is a schematic diagram of the distribution structure of the uniform glue roller and the glue coating roller in this embodiment;

[0035] Figure 6 This is a schematic diagram of the adhesive dispensing assembly in this embodiment;

[0036] Figure 7 This is a cross-sectional structural diagram of the glue dispensing assembly in this embodiment;

[0037] Figure 8 This is a schematic diagram showing the disassembled structure of the glue delivery assembly in this embodiment.

[0038] In the diagram, 1. support plate; 101. hanging point; 2. bracket; 201. slide rail; 3. outer frame; 301. slider; 4. glue distribution roller; 5. glue application roller; 6. support tube; 601. support ring; 7. metal tube; 701. cap; 702. glue inlet tube; 703. elbow; 704. glue outlet; 8. induction heating coil; 9. auger blade; 10. bolt; 1001. washer; 10011. rubber coating layer; 10012. anti-slip texture; 11. connector; 1101. insertion hole; 1102. tightening bolt. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0040] Please see the appendix Figure 1-4 The tobacco filter rod forming machine belt coating device includes a support plate 1. The bottom surface of the support plate 1 is provided with a hanging point 101. The support plate 1 is assembled onto the filter rod forming machine through the hanging point 101, and the belt of the forming machine moves along the top surface of the support plate 1. The top surface of the support plate 1 is provided with a bracket 2. A coating wheel set slides vertically on the bracket 2. The coating wheel set consists of two equalizing rollers 4 and one coating roller 5. The equalizing rollers 4 and the coating roller 5 are assembled on an outer frame 3. The outer frame 3 and the bracket 2 slide vertically together. A vertical slide rail 201 is provided on the bracket 2. A slider 301 is fixedly installed on the back of the outer frame 3. The slider 301 slides with the slide rail 201. After the outer frame 3 supports the coating roller 5 to a suitable position, it is locked and fixed on the bracket 2 by means of a locking device.

[0041] Please see the appendix Figure 4 The locking component includes a bolt 10 threadedly connected to the slider 301. A washer 1001 is fitted over the bolt 10. As the bolt 10 is tightened onto the slider 301, the two ends of the washer 1001 abut against the bracket 2 and the head of the bolt 10, respectively, thereby increasing the friction between the slider 301 and the bracket 2 and supporting and locking the outer frame 3 onto the bracket 2. Furthermore, anti-slip textures 10012 are provided on both ends of the washer 1001. The anti-slip textures 10012 enhance the firmness and reliability of the bolt 10 in locking the slider 301 and the outer frame 3.

[0042] Please see the appendix Figure 1Appendix Figure 4 Appendix Figure 5 Two equalizing rollers 4 are rotatably mounted on the top of the outer frame 3, with a gap between them. A glue-applying roller 5 is rotatably mounted on the bottom of the outer frame 3, and both glue-applying rollers 5 are in contact with the two equalizing rollers 4. A power assembly is provided on the front of the outer frame 3. The power assembly is installed with the glue-applying roller 5 to drive the glue-applying roller 5 to rotate, and the glue-applying roller 5 drives the two equalizing rollers 4 to rotate. A glue-feeding assembly is mounted on the top of the bracket 2. The glue-feeding assembly delivers glue to the space between the equalizing rollers 4. As the two equalizing rollers 4 rotate, the glue is evenly distributed on the equalizing rollers and the glue-applying roller 5, ensuring the uniformity of the glue application.

[0043] Please see the appendix Figure 1 Appendix Figure 3 Appendix Figure 6 Appendix Figure 7 The glue delivery assembly includes a support tube 6 mounted on a bracket 2. The support tube 6 is horizontally mounted on the bracket 2 via a connector 11. The connector 11 has an insertion hole 1101 for the support tube 6 to be inserted into the insertion hole 1101. A tightening bolt 1102 is threaded onto the connector 11. The tightening bolt 1102 passes into the insertion hole 1101 and abuts against the outer wall of the support tube 6, thereby positioning the support tube 6 on the connector 11. Both ends of the support tube 6 are fitted with support rings 601. A metal tube 7 is coaxially arranged inside the support tube 6. Both ends of the metal tube 7 pass through the two ends of the support tube 6 and are fitted with support rings 601, thereby supporting the metal tube 7. A cavity is provided between the metal tube 7 and the support tube 6. An induction heating coil 8 is arranged in the cavity and is wound around the metal tube 7, thereby heating the metal tube 7.

[0044] Please see the appendix Figure 6-8 A cap 701 is fitted onto the glue inlet of the metal tube 7. A power assembly is fixedly installed on the cap 701. The power assembly is driven by the auger blades 9 inside the metal tube 7, thereby driving the auger blades 9 to rotate inside the metal tube 7. A glue inlet pipe 702 is connected to the side of the metal tube 7 near the glue inlet. The glue inlet pipe 702 is connected to the glue supply line, which supplies glue into the metal tube 7. As the auger blades 9 rotate, the glue is transported along the metal tube 7. The adhesive is stirred and heated by the metal tube 7 to maintain its properties. After the adhesive is delivered to the outlet of the metal tube 7, an elbow 703 is connected to the outlet, and an outlet head 704 is connected to the elbow 703. The outlet of the outlet head 704 is a closing connector and faces between the two equalizing rollers 4, so that the adhesive drips onto the equalizing rollers 4 and coats the coating rollers 5, thereby coating the shaping paper conveyed on the cloth bag with adhesive.

[0045] The working principle of the adhesive coating device for the tobacco filter rod forming machine is as follows: The tray 1 is assembled onto the filter rod forming machine through the hanging point 101, and the cloth belt moves along the top surface of the tray 1. After the cloth belt guides the forming paper onto the tray 1, the slider 301 moves down along the slide rail 201 on the bracket 2, so that the adhesive coating roller 5 abuts against the forming paper. Then, the bolt 10 is tightened so that the washer 1001 abuts against the bracket 2 to enhance the assembly strength of the slider 301 and the bracket 2, and to position the adhesive coating roller 5 to ensure the contact position and contact force between the adhesive coating roller 5 and the forming paper. After the adhesive coating roller 5 is positioned, the glue inlet pipe 702 is connected to the pump body through the pipeline. The pump body pumps the glue into the metal pipe 7. An induction heating coil 8 is wound on the outer wall of the metal pipe 7 to perform induction heating treatment on the metal pipe 7. After the glue is pumped into the glue inlet of the metal pipe 7, the auger blade 9 inside the metal pipe 7 is driven to rotate, thereby conveying the glue along the metal pipe 7. As the auger blades 9 convey the adhesive along the metal pipe 7, they agitate the adhesive and maintain its temperature under the heat of the metal pipe 7, thereby controlling the adhesive's properties. After the adhesive is conveyed to the outlet of the metal pipe 7, it drips from the elbow 703 and the dispensing head 704 on the elbow 703 into the space between the two equalizing rollers 4. The outlet of the dispensing head 704 has a constricted structure to ensure the adhesive drips onto the designated spot. After the adhesive drips onto the equalizing rollers 4, the coating roller 5 is driven to rotate. Its contact with the equalizing rollers 4 causes the equalizing rollers 4 to rotate synchronously, thus ensuring that the adhesive is evenly applied to the equalizing rollers 4 and then from the equalizing rollers 4 to the coating rollers 5. As the belt moves the shaping paper and the coating rollers 5 rotate, the adhesive is evenly applied to the shaping paper. Due to heating and agitation, the adhesive maintains its fluidity, uniformity, and adhesive properties, effectively reducing adhesive backflow and improving the processing and molding quality of the filter rod.

Claims

1. A tape coating apparatus for a tobacco rod making machine, characterised in that: The application relates to a glue coating device, which comprises a supporting plate (1), a supporting frame (2), a glue coating wheel group, a glue feeding assembly and a power assembly. The glue coating wheel group comprises an outer frame (3) vertically slidably arranged on the supporting frame (2), two glue uniformizing rollers (4) rotatably arranged on the inner top of the outer frame (3), a glue coating roller (5) rotatably arranged on the inner bottom of the outer frame (3), and a power assembly arranged on the front surface of the outer frame (3) and drivingly connected with the glue coating roller (5). The glue feeding assembly comprises a supporting pipe (6) arranged on the supporting frame (2), a metal pipe (7) coaxially arranged in the supporting pipe (6), an induction heating coil (8) wound on the outer wall of the metal pipe (7) and located in the supporting pipe (6), a screw blade (9) rotatably arranged in the metal pipe (7), a cover (701) arranged on the glue inlet of the metal pipe (7), a power assembly fixedly arranged on the cover (701) and drivingly connected with the screw blade (9), and a glue feeding pipe (702) connected with the metal pipe (7) and arranged on the side of the metal pipe (7) close to the glue inlet.

2. The band-coating apparatus of the tobacco rod maker as claimed in claim 1, characterized by: The supporting frame (2) is provided with a vertical slide (201), and the slide (201) is slidably provided with a sliding block (301) fixedly arranged on the back surface of the outer frame (3) and locked with the supporting frame (2) by means of a locking piece.

3. The tape applicator of the tobacco rod maker according to claim 2, characterized in that: The locking piece comprises a bolt (10) threadedly connected with the sliding block (301), and a packing ring (1001) sleeved on the outer portion of the bolt (10) and abutting against the head of the bolt (10) and the supporting frame (2) at the two end surfaces of the packing ring (1001).

4. The tape applicator of the tobacco rod maker according to claim 3, characterized in that: The outer surface of the packing ring (1001) is provided with a rubber coating layer (10011), and the two end surfaces of the rubber coating layer (10011) are provided with anti-skid patterns (10012).

5. The band-coating apparatus of the tobacco rod maker as claimed in claim 1, characterized by: The supporting pipe (6) is horizontally arranged on the supporting frame (2) by means of a connecting piece, and the two ends of the supporting pipe (6) are respectively sleeved with supporting rings (601) sleeved with the outer side wall of the metal pipe (7).

6. The tape applicator device of the tobacco rod making machine according to claim 5, characterized in that: The connecting piece comprises a connecting head (11) provided with a socket (1101) into which the supporting pipe (6) is inserted, and the supporting pipe (6) is positioned and assembled with the connecting head (11) by means of a positioning piece.

7. A tape applicator device for a tobacco rod making machine as claimed in claim 6, characterized in that: The positioning piece comprises a jacking bolt (1102) threadedly connected with the connecting head (11) and penetrating into the socket (1101) and abutting against the outer pipe wall of the supporting pipe (6).

8. The band-coating apparatus of a tobacco rod maker as set forth in claim 1, wherein: The glue outlet of the metal pipe (7) is connected with an elbow (703), the elbow (703) is connected with a glue outlet head (704), the glue outlet of the glue outlet head (704) is a converging structure and faces between the two glue uniformizing rollers (4).

9. The tape applicator of the tobacco rod maker according to claim 1, characterized in that: The supporting pipe (6) is a quartz pipe.

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