Glue roller assembly mechanism in hot melt adhesive labelling machine

Abstract

The application discloses a glue roller assembly mechanism in a hot melt adhesive labeling machine, which comprises a glue roller, an upper glue assembly arranged on the outer side of the glue roller, a ceramic layer arranged on the roller body surface of the glue roller, and a plurality of bowl-shaped glue containing grooves arranged on the ceramic layer; the upper glue assembly comprises a mounting seat, a glue storage block, a glue outlet block, and a scraper, the mounting seat is fixed on a support seat, the glue storage block is rotatably connected to the mounting seat, an inner part of the glue storage block is provided with a glue storage cavity, the glue storage block is provided with a glue inlet, the glue outlet block is provided with an inner cavity, a glue outlet is formed on one side of the glue outlet block close to the glue roller, the glue outlet block and the scraper are fixed with the glue storage block, the scraper comprises a scraper body and a glue scraping part, a locking mechanism is arranged between the glue storage block and the support seat, and after the locking mechanism is unlocked, one end of the glue storage block away from the mounting seat can swing back and forth. The application has the advantages that the amount of glue thrown in the high-speed rotation process of the glue roller can be greatly reduced, and the glue can be conveniently cleaned.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery and equipment technology, specifically to a hot melt adhesive labeling machine. Background Technology

[0002] Hot melt adhesive labeling machines utilize the heat-melting property of adhesive to apply labels to products. Hot melt adhesive labeling offers advantages such as high viscosity, strong adhesion, and resistance to peeling. The structure of the roller assembly in current hot melt adhesive labeling machines includes: a roller for applying adhesive to the label; and, along the rotation direction of the roller, a glue application component and a glue scraper component. The glue application component spreads the adhesive onto the outer wall of the roller, while the glue scraper component evenly distributes the adhesive on the outer wall of the roller.

[0003] When the labeling machine is working, the gluing component applies glue to the outer wall of the glue roller, and then the glue scraper component applies the glue to the label. Currently, the following technical problems have been found during the labeling process: 1. During high-speed rotation of the glue roller, glue on the roller surface detaches, resulting in glue splattering. 2. The gluing component requires regular disassembly and cleaning, but the current disassembly and installation of the gluing component is very cumbersome, making each disassembly and installation time-consuming and labor-intensive, thus affecting production efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a glue roller assembly mechanism in a hot melt adhesive labeling machine, which has a simple structure, can effectively reduce the amount of glue splashed, and is very convenient to disassemble and install, and very convenient to clean the glue.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a glue roller assembly mechanism in a hot melt adhesive labeling machine, comprising: a glue roller movably supported on a support base; an adhesive application component for applying glue to the outer wall of the glue roller is provided on the outer side of the glue roller; a ceramic layer is provided on the surface of the glue roller body; a plurality of glue-receiving grooves are arranged on the ceramic layer; each glue-receiving groove is a bowl-shaped structure with a circular opening and an inner diameter that gradually increases from the bottom towards the opening; the adhesive application component includes: a mounting base, a glue storage block, a glue dispensing block, and a scraper arranged sequentially along the rotation direction of the glue roller; the mounting base is fixed on the support base; the glue storage block is rotatably connected to the mounting base; the glue storage block has a glue storage cavity inside; and a glue storage block is provided on the glue storage block. It has a glue inlet connected to the glue storage chamber, and a glue outlet is provided inside the glue outlet block. The glue outlet block has a glue outlet connected to the glue outlet block cavity on the side near the glue roller. The glue outlet block, scraper and glue storage block are fixed together by a detachable connection structure. The glue outlet block cavity is connected to the glue storage chamber after fixing. The scraper includes a scraper body and a scraping part. A locking mechanism is provided between the glue storage block and the support base to lock the glue storage block on the support base. When the glue storage block is locked, the glue outlet of the glue outlet block can apply glue to the outer wall of the glue roller, and the scraping part of the scraper scrapes against the outer wall of the glue roller. After the locking mechanism is unlocked, the end of the glue storage block away from the mounting base can swing back and forth in the direction of approaching or away from the glue roller.

[0006] Furthermore, in the aforementioned hot melt adhesive labeling machine, the ceramic layer is formed using a ceramic plating process.

[0007] Furthermore, in the aforementioned hot melt adhesive labeling machine, the depth of each adhesive-containing groove is 0.1mm to 0.2mm.

[0008] Furthermore, in the aforementioned hot melt adhesive labeling machine, the inner diameter of the opening of each adhesive-containing groove is 0.1mm to 0.2mm.

[0009] Furthermore, in the aforementioned hot melt adhesive labeling machine, the adhesive-containing grooves are evenly distributed along the ceramic layer on the entire surface of the roller body, and the distance between each two adjacent adhesive-containing grooves is 0.3mm to 0.8mm.

[0010] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism includes a locking mechanism between the glue storage block and the support base. The support base has a locking hole, and the glue storage block has a locking shaft through-hole. The locking shaft through-hole extends through the bottom of the glue storage block, and a locking shaft is installed within it. The locking shaft can move up and down within the locking shaft through-hole. When the locking shaft moves downwards, causing its lower end to pass through the locking shaft through-hole and enter the locking hole, the glue storage block is locked to the support base. Afterwards, when the locking shaft moves upwards and disengages from the locking hole, the glue storage block is unlocked. The end of the unlocked glue storage block furthest from the mounting base can swing back and forth towards or away from the glue roller.

[0011] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism includes a glue storage block that is rotatably connected to the mounting base via a hinge.

[0012] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism includes a strip-shaped mounting hole on the outer wall of the glue storage block, which is vertically arranged along the height direction of the glue storage block. The top of the locking shaft is provided with a locking shaft connecting part, which bends out of the mounting hole and connects to a handle located outside the mounting hole. Driven by the handle, the locking shaft connecting part can move up and down in the mounting hole, thereby driving the locking shaft to move up and down in the locking shaft through hole until the glue storage block is in a locked state or an unlocked state.

[0013] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism includes a locking bolt between the glue storage block and the locking shaft. The locking bolt can lock the locking shaft in the locking shaft through hole within the glue storage block when it is in a locked state. Only after the locking bolt is unscrewed can the handle drive the locking shaft to move.

[0014] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism includes a detachable fixed connection structure between the glue dispensing block, the scraper, and the glue storage block. This structure comprises: a plurality of glue storage block mounting holes on the glue block; a plurality of glue dispensing block connecting through holes on the glue dispensing block; a plurality of connecting lugs on the scraper; each connecting lug having a connecting hole; the glue storage block mounting holes, glue dispensing block connecting through holes, and connecting lug holes corresponding one-to-one; and fastening bolts installed in each corresponding set of glue storage block mounting holes, glue dispensing block connecting through holes, and connecting lug holes. An installation support plate is also provided on the outer side of the glue dispensing block, and the glue dispensing block is bolted to the installation support plate. The installation support plate is also bolted to the glue storage block.

[0015] Furthermore, in the aforementioned hot melt adhesive labeling machine, the glue roller assembly mechanism further includes a comb plate. The comb plate structure includes: a comb plate body, on which comb-shaped teeth are provided. The comb plate body is fixedly installed on the side of the mounting base away from the glue storage block. The comb-shaped teeth are used to remove the label from the glue roller.

[0016] The advantages of this invention are: 1. It significantly reduces the amount of glue spilled during the high-speed rotation of the glue roller, thus avoiding glue waste and effectively preventing glue contamination of the labeling equipment and environment, ensuring the high-speed and efficient operation of the entire labeling machine. 2. The glue storage block and the mounting base are connected in a rotatable manner, and the glue dispensing block and scraper are fixed on the glue storage block. When the glue storage block is in the unlocked state, it can move along with the glue dispensing block and scraper, greatly facilitating the periodic cleaning of glue on the glue dispensing block, scraper, and glue storage block, ensuring efficient labeling. 3. The dispensing block, scraper, and glue storage block have a detachable fixed connection structure. This structure is very simple, and disassembly and installation are very convenient, providing convenience for cleaning glue and effectively improving the efficiency of cleaning and maintenance work. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the glue roller assembly mechanism in the hot melt adhesive labeling machine of the present invention.

[0018] Figure 2 This is a schematic diagram of the ceramic layer setup on the rubber roller.

[0019] Figure 3 This is a schematic diagram of the step structure of the adhesive groove.

[0020] Figure 4 This is a schematic diagram of the adhesive groove structure.

[0021] Figure 5 This is a schematic diagram of the locking mechanism between the glue storage block and the support base.

[0022] Figure 6 This is a schematic diagram showing the exploded structure of the glue dispensing block, scraper, and glue storage block.

[0023] Figure 7 This is a schematic diagram of the comb plate installation structure. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the glue roller assembly mechanism in the hot melt adhesive labeling machine includes: a glue roller 2 movably supported on a support base 1; an adhesive application component 3 for applying glue to the outer wall of the glue roller 2; a ceramic layer 21 on the surface of the glue roller 2; and several glue-receiving grooves 201 arranged on the ceramic layer 21. Each glue-receiving groove 201 is a bowl-shaped structure with a circular opening and an inner diameter that gradually increases from the bottom towards the opening. The depth H of each glue-receiving groove is 0.1mm to 0.2mm. The inner diameter of the opening of each glue-receiving groove is 0.1mm to 0.2mm. All glue-receiving grooves are evenly distributed along the ceramic layer 21 on the entire surface of the glue roller 2, and the distance d between any two adjacent glue-receiving grooves 201 is 0.3mm to 0.8mm. The ceramic layer 21 can be achieved using a ceramic plating process or any other feasible process. The depth of the adhesive-containing groove, the inner diameter of the opening of the adhesive-containing groove, and the spacing between two adjacent adhesive-containing grooves 201 can be adjusted according to the rotation speed of the rubber roller 2. The principle is that the higher the rotation speed of the rubber roller 2, the smaller the amount of adhesive contained in each adhesive-containing groove, which requires the depth H of each adhesive-containing groove to decrease accordingly, and / or the inner diameter of the opening of each adhesive-containing groove to decrease accordingly, and / or the spacing d between two adjacent adhesive-containing grooves to increase accordingly. Conversely, the lower the rotation speed of the rubber roller 2, the larger the amount of adhesive contained in each adhesive-containing groove, which requires the depth H of each adhesive-containing groove to increase accordingly, and / or the inner diameter of the opening of each adhesive-containing groove to increase accordingly, and / or the spacing d between two adjacent adhesive-containing grooves to decrease accordingly.

[0026] In this invention, a ceramic layer 21 is provided on the surface of the rubber roller 2. The purpose of this is that the surface of the ceramic layer 21 is smooth and has good wear resistance, thereby greatly improving the service life of the rubber roller 2. At the same time, each bowl-shaped glue-receiving groove 201 on the ceramic layer 21 has a small glue capacity, which greatly reduces the amount of glue splashed when the rubber roller 2 rotates at high speed, thereby avoiding glue pollution of the environment. In addition, the bottom diameter of the bowl-shaped glue-receiving groove 201 is small, which makes it difficult for glue to accumulate at the bottom of the groove, greatly improving the utilization efficiency of glue.

[0027] The glue application assembly 3 includes: a mounting base 31, a glue storage block 32, a glue dispensing block 33, and a scraper 34 arranged sequentially along the rotation direction of the glue roller 2. The mounting base 31 is fixed to the support base 1, and the glue storage block 32 is rotatably connected to the mounting base 31. In this embodiment, the glue storage block 32 is rotatably connected to the mounting base 31 via a hinge 4.

[0028] The glue storage block 32 has an internal glue storage cavity for storing glue, and a glue inlet 321 communicating with the glue storage cavity is provided on the glue storage block 32. Glue is conveyed into the glue storage cavity through the glue inlet 321. The glue dispensing block 33 has an internal cavity, and a glue dispensing port 331 communicating with the internal cavity is opened on the side of the glue dispensing block 33 near the glue roller 2. The glue dispensing block 33 and the scraper 34 are both fixed on the glue storage block 32, and the internal cavity of the fixed glue dispensing block is connected to the glue storage cavity. The scraper 34 includes a scraper body 341 and a scraping part 342. A locking mechanism is provided between the glue storage block 32 and the support base 1 to lock the glue storage block 32 onto the support base 1. When the glue storage block 32 is locked, the glue outlet 331 of the glue dispensing block 33 can apply glue to the outer wall of the glue roller 2, and the scraping part 342 of the scraper 34 scrapes and blocks the outer wall of the glue roller 2. After the locking mechanism is unlocked, the end of the glue storage block 32 away from the mounting base 31 can swing back and forth towards or away from the glue roller 2. During labeling, the glue roller 2 rotates at high speed, and the glue supplied by the external glue source is delivered from the glue inlet 321 to the glue storage cavity. The glue in the glue storage cavity then enters the inner cavity of the glue dispensing block. The glue in the inner cavity of the glue dispensing block is applied to the surface of the ceramic layer 21 of the glue roller 2 through the glue outlet 331 and into the glue-containing groove 201. The scraping part 342 of the scraper 34 plays the role of scraping and evenly applying the glue to the surface of the ceramic layer 21. The glue storage cavity is inside the glue storage block 32, and the inner cavity of the glue dispensing block is located inside the glue dispensing block 33, which is not shown in the figure. The connection between the glue storage chamber and the glue dispensing block cavity can be achieved through holes or similar means.

[0029] Specifically, the locking mechanism between the glue storage block 32 and the support base 1 includes the following structure: Figure 5 As shown, the support base 1 is provided with a locking hole 11, and the glue storage block 32 is provided with a locking shaft through hole 322. The locking shaft through hole 322 is provided through the bottom of the glue storage block 32, and a locking shaft 323 is provided in the locking shaft through hole 322. The locking shaft 323 can move up and down in the locking shaft through hole 322. When the locking shaft 323 moves downward so that the lower end of the locking shaft 323 enters the locking hole 11 through the locking shaft through hole 322, the glue storage block 32 is in a locked state locked on the support base 1. Afterwards, when the locking shaft 323 moves upward and disengages from the locking hole 11, the glue storage block 32 is in an unlocked state. The end of the glue storage block 32 in the unlocked state that is away from the mounting base 31 can swing back and forth in the direction of approaching or away from the glue roller 2.

[0030] In this embodiment, a strip-shaped mounting hole 324 is provided on the outer wall of the glue storage block 32. The mounting hole 324 is vertically arranged along the height direction of the glue storage block 32. A locking shaft connecting part 3231 is provided at the top of the locking shaft 323. The locking shaft connecting part 3231 bends out of the mounting hole 324 and connects to the handle 325 provided outside the mounting hole 324. Under the drive of the handle 325, the locking shaft connecting part 3231 can move up and down in the mounting hole 324, thereby driving the locking shaft 323 to move up and down in the locking shaft through hole 322 until the glue storage block 32 is in a locked state or an unlocked state. In order to improve the reliability of locking, a locking bolt 36 is also provided between the glue storage block 32 and the locking shaft 323. The locking bolt 36 can lock the locking shaft 323 in the locking shaft through hole 322 when it is in the locked state. After unscrewing the locking bolt 36, the handle 325 can drive the locking shaft 323 to move.

[0031] like Figure 6 As shown, in this embodiment, the detachable fixed connection structure between the dispensing block 33, the scraper 34, and the storage block 32 includes: the storage block 32 is provided with a plurality of storage block mounting holes 326, the dispensing block 33 is provided with a plurality of dispensing block connecting through holes 332, and the scraper body 341 of the scraper 34 is provided with a plurality of connecting lugs 343, each connecting lug 343 having a lug connecting hole 344. The storage block mounting holes 326, the dispensing block connecting through holes 332, and the lug connecting holes 344 correspond one-to-one, and each corresponding set of storage block mounting holes 326, dispensing block connecting through holes 332, and lug connecting holes 344 is provided with a fastening bolt 5. A mounting plate 35 is also provided on the outer side of the dispensing block 33, and the dispensing block 33 and the mounting plate 35 are bolted together. The mounting plate 35 is also bolted to the storage block 32.

[0032] The glue storage block 32 is rotatably connected to the mounting base 31, and the glue dispensing block 33 and the scraper 34 are fixed on the glue storage block 32. When the glue storage block 32 is in the unlocked state, the glue storage block 32 can move outwards away from the glue roller 2 along with the glue dispensing block 33 and the scraper 34 on it. This greatly facilitates the periodic cleaning of glue on the glue dispensing block 33, the scraper 34 and the glue storage block 32, and ensures efficient labeling.

[0033] In addition, the dispensing block 33, scraper 34 and dispensing block 32 adopt the above-mentioned detachable fixed connection structure. This structure is very simple and easy to disassemble and install, which provides convenience for cleaning glue and effectively improves the efficiency of cleaning and maintenance work.

[0034] like Figure 7As shown, the adhesive application assembly also includes a comb plate 37. The structure of the comb plate 37 includes: a comb plate body 371, on which a comb-shaped toothed plate 372 is provided. The comb plate body 371 is fixedly installed at the end of the mounting base 31 away from the adhesive storage block 32. The comb-shaped toothed plate 372 is used to remove labels from the adhesive roller 2. The comb plate 37 can remove labels pasted on the adhesive roller 2, thereby ensuring efficient normal labeling work.

[0035] The advantages of this invention are as follows: 1. It significantly reduces the amount of glue splashed during the high-speed rotation of the glue roller 2, thereby avoiding glue waste and effectively preventing glue contamination of the labeling equipment, ensuring the high-speed and efficient operation of the entire labeling machine. 2. The glue storage block 32 and the mounting base 31 are rotatably connected, and the glue dispensing block 33 and the scraper 34 are fixed on the glue storage block 32. When the glue storage block 32 is in the unlocked state, it can move together with the glue dispensing block 33 and the scraper 34, greatly facilitating the periodic cleaning of glue on the glue dispensing block 33, the scraper 34, and the glue storage block 32, ensuring efficient labeling. 3. The glue dispensing block 33, the scraper 34, and the glue storage block 32 are detachably fixed. This connection structure is very simple, and disassembly and installation are very convenient, providing convenience for cleaning glue and effectively improving the efficiency of cleaning and maintenance work.

Claims

1. The glue roller assembly mechanism in a hot melt adhesive labeling machine includes: A rubber roller is movably supported on a support base. An adhesive applicator is provided on the outer side of the roller for applying adhesive to its outer wall. The roller body surface is provided with a ceramic layer, on which several adhesive-receiving grooves are arranged. Each groove is a bowl-shaped structure with a circular opening and a gradually increasing inner diameter from the bottom towards the opening. The adhesive applicator includes: a mounting base, an adhesive storage block, an adhesive outlet block, and a scraper, arranged sequentially along the rotation direction of the roller. The mounting base is fixed to the support base, the adhesive storage block is rotatably connected to the mounting base, and the storage block has an internal adhesive storage cavity with an inlet communicating with the cavity. The adhesive outlet block... The device has an inner cavity for dispensing glue. The glue dispensing block has a glue outlet on the side near the glue roller that communicates with the inner cavity of the glue dispensing block. The glue dispensing block, scraper, and glue storage block are fixed together by a detachable connection structure. The inner cavity of the glue dispensing block is connected to the glue storage cavity after being fixed. The scraper includes a scraper body and a scraping part. A locking mechanism is provided between the glue storage block and the support base to lock the glue storage block on the support base. When the glue storage block is locked, the glue outlet of the glue dispensing block can apply glue to the outer wall of the glue roller, and the scraping part of the scraper scrapes against the outer wall of the glue roller. After the locking mechanism is unlocked, the end of the glue storage block away from the mounting base can swing back and forth in the direction of approaching or away from the glue roller.

2. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 1, characterized in that: The ceramic layer is formed using a ceramic plating process.

3. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 1 or 2, characterized in that: The depth of each adhesive groove is 0.1mm to 0.2mm.

4. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 3, characterized in that: The inner diameter of the opening of each adhesive recess is 0.1mm to 0.2mm.

5. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 4, characterized in that: The adhesive grooves are evenly distributed along the ceramic layer on the entire surface of the roller body, and the distance between each two adjacent adhesive grooves is 0.3mm to 0.8mm.

6. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 1, characterized in that: The locking mechanism between the glue storage block and the support base includes: a locking hole on the support base, a locking shaft through hole inside the glue storage block, the locking shaft through hole penetrating the bottom of the glue storage block, a locking shaft inside the locking shaft through hole, and the locking shaft being able to move up and down within the locking shaft through hole. When the locking shaft moves downward so that its lower end passes through the locking shaft through hole and enters the locking hole, the glue storage block is in a locked state locked to the support base. Afterward, when the locking shaft moves upward and disengages from the locking hole, the glue storage block is in an unlocked state. The end of the glue storage block in the unlocked state that is away from the mounting base can swing back and forth in a direction closer to or away from the glue roller.

7. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 6, characterized in that: The glue storage block is rotatably connected to the mounting base via a hinge.

8. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 6, characterized in that: The outer wall of the glue storage block has a strip-shaped mounting hole, which is vertically set along the height direction of the glue storage block. The top of the locking shaft is provided with a locking shaft connecting part, which bends out of the mounting hole and connects to the handle set outside the mounting hole. Driven by the handle, the locking shaft connecting part can move up and down in the mounting hole, thereby driving the locking shaft to move up and down in the locking shaft through hole until the glue storage block is in a locked state or an unlocked state.

9. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 8, characterized in that: A locking bolt is also provided between the glue storage block and the locking shaft. The locking bolt can lock the locking shaft in the locking shaft through hole in the glue storage block when it is in the locked state. Only after the locking bolt is unscrewed can the handle drive the locking shaft to move.

10. The glue roller assembly mechanism in the hot melt adhesive labeling machine according to claim 6, characterized in that: The detachable fixed connection structure between the dispensing block, scraper, and storage block includes: a plurality of storage block mounting holes on the dispensing block, a plurality of dispensing block connecting through holes on the dispensing block, a plurality of connecting lugs on the scraper, each connecting lug having a connecting hole, the storage block mounting holes, the dispensing block connecting through holes, and the lug connecting holes corresponding one-to-one, and fastening bolts installed in each corresponding set of storage block mounting holes, dispensing block connecting through holes, and lug connecting holes; a mounting plate is also provided on the outside of the dispensing block, the dispensing block and the mounting plate are fixed together with bolts, and the mounting plate is also fixed to the storage block with bolts.

11. The roller assembly mechanism in the hot melt adhesive labeling machine according to claim 6, characterized in that: The gluing assembly also includes a comb plate, the structure of which includes: a comb plate body, a comb-shaped toothed plate on the comb plate body, the comb plate body being fixedly installed on the side of the mounting base away from the glue storage block, and the comb-shaped toothed plate being used to remove labels from the glue roller.

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