Glue roller assembly mechanism in hot melt adhesive labeling machine

Abstract

The application discloses a glue coating roller assembly mechanism in a hot melt adhesive labeling machine, which comprises a glue coating roller, a glue coating assembly and a glue scraping assembly. The glue coating assembly comprises a glue coating block, an inlet glue channel and an outlet glue channel are arranged in the glue coating block, the inlet glue channel is communicated with an inlet glue port and an outlet glue groove, the outlet glue channel is communicated with the outlet glue groove and an outlet glue port, the inlet glue port is communicated with a glue input mechanism, an outlet glue groove is formed between a groove front block and a groove rear block on the side wall of the glue coating block, an outer end of the groove rear block is provided with a rear block glue scraping part which is abutted on the outer wall of the glue coating roller, a glue blocking piece on the groove front block is inclined and close to the outer wall of the glue coating roller and covers the notch; the structure of the glue scraping assembly comprises a glue scraping piece and a glue scraping block, and the glue scraping piece and the glue scraping block are elastically pressed and blocked on the outer wall of the glue coating roller. The application has the advantages that the uniformity of the glue on the glue coating roller is greatly improved, and the phenomenon of local unevenness of the glue is effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid filling equipment, in particular to a hot melt adhesive labeling machine. BACKGROUND

[0002] With the continuous development of liquid filling production, the speed requirement of liquid filling is continuously improved. It is found in the current filling production process that the glue on the glue roller is not evenly applied, which leads to a decrease in the accuracy of labeling, and is prone to produce waste labels, which is not suitable for high-speed filling production requirements. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a glue roller assembly mechanism in a hot melt adhesive labeling machine, which can greatly improve the uniformity of glue on the glue roller, effectively prevent the phenomenon of local uneven glue, and adapt to high-speed production requirements.

[0004] To solve the above problems, the technical scheme adopted by the present application is: a glue roller assembly mechanism in a hot melt adhesive labeling machine, comprising: a glue roller, a glue applying assembly and a glue scraping assembly are arranged on the outer side of the glue roller, the structure of the glue applying assembly comprises: a glue applying block, an inlet glue channel and an outlet glue channel are arranged in the glue applying block, the two ends of the inlet glue channel are respectively connected with an inlet glue port and an outlet glue groove, the two ends of the outlet glue channel are respectively connected with the outlet glue groove and an outlet glue port, the inlet glue port and the outlet glue port are both arranged on the outer wall of the glue applying block, the inlet glue port is connected with a glue input mechanism, a groove front stop block and a groove rear stop block are arranged on the side wall of the glue applying block on one side of the glue roller, the groove front stop block and the groove rear stop block are sequentially and spacedly arranged along the rotating direction of the glue roller, the outlet glue groove is formed between the groove front stop block and the groove rear stop block, the outer end of the groove rear stop block is provided with a rear stop block glue scraping part, the rear stop block glue scraping part abuts against the outer wall of the glue roller, a glue stop piece is fixedly arranged on the groove front stop block, the outer end of the glue stop piece is inclined towards the groove rear stop block, extends to the outer wall of the glue roller, covers and blocks the slot of the local outlet glue groove, and makes the outlet glue groove have a pressure;

[0005] The structure of the glue scraping assembly comprises: a glue scraping piece and a glue scraping block which are sequentially arranged along the rotating direction of the glue roller, the glue scraping piece is installed on the glue scraping block, the outer end of the glue scraping block is provided with a glue scraping block scraping part, and the glue scraping block is elastically arranged along the radial direction of the glue roller, so that the glue scraping piece and the glue scraping block scraping part are elastically pressed against the outer wall of the glue roller.

[0006] Further, the glue roller assembly mechanism in the aforementioned hot melt adhesive labeling machine, wherein the top and bottom of the outlet glue groove are respectively provided with a top silicone rubber pad and a bottom silicone rubber pad, the top silicone rubber pad is fixed by being pressed by an upper pressing plate on the top of the glue applying block, so that the upper end of the outlet glue groove is sealed; the bottom silicone rubber pad is fixed by being pressed by a lower pressing plate on the bottom of the glue applying block, so that the lower end of the outlet glue groove is sealed.

[0007] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue block is internally provided with a glue block heating mechanism.

[0008] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue block is internally provided with a glue block heating mechanism.

[0009] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0010] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0011] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0012] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0013] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0014] Further, the glue roller assembly mechanism of the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a glue input mechanism.

[0015] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the connecting structure between the glue scraping piece and the glue scraping block comprises: the glue scraping piece is installed on the glue scraping block through locking bolts, a torsion spring is sleeved on the locking bolts between the glue scraping piece and the glue scraping block, and the two ends of the torsion spring are pressed against the glue scraping piece and the glue scraping block, respectively.

[0016] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue roller, the glue applying assembly and the glue scraping assembly are all arranged in a closed protective plate, a collecting cover is arranged above the protective plate, a smoke collecting pipe is arranged on the collecting cover, the smoke collecting pipe is connected with a first negative pressure fan, a gas outlet of the first negative pressure fan is provided with a smoke discharging pipe, a filter is arranged on the smoke discharging pipe, and a liquid discharging port is formed in the bottom of the first negative pressure fan.

[0017] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue roller assembly mechanism further comprises a label shoveling assembly, the label shoveling assembly comprises: a label shoveling support, a label shoveling stop piece is arranged on one end of the label shoveling support close to the glue roller, and the end of the label shoveling stop piece is pressed against the outer wall of the glue roller; the label shoveling assembly, the glue applying assembly and the glue scraping assembly are sequentially arranged along the rotation direction of the glue roller; and the included angle between the label shoveling stop piece and the glue roller close to the glue applying assembly is an acute angle.

[0018] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue scraping block is installed on a glue scraping block rotating seat, the glue scraping block rotating seat is movably sleeved outside the first rotating shaft, a rotating seat pressing plate is fixed on the outer wall of the glue scraping block rotating seat, the rotating seat pressing plate close to the glue scraping block is pressed by a first elbow clamp installed on the rack, a first pressing head bolt capable of moving close to or away from the rotating seat pressing plate is arranged on the first elbow clamp pressing head, and the first pressing head bolt is pressed against the rotating seat pressing plate; so that the outer end of the glue stop piece and the glue scraping part of the rear stop block are pressed against the outer wall of the glue roller; a first limiting adjustment screw is arranged on the outer side of the rotating seat pressing plate away from the glue scraping block, the first limiting adjustment screw is fixed on the rack outside the rotating seat pressing plate, and the first limiting adjustment screw abuts against the rotating seat pressing plate.

[0019] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue block is detachably fixed on the glue block rotating seat by the fastening bolt, and after the fastening bolt is loosened, the glue block can move in the radial direction of the glue roller relative to the glue block rotating seat, the glue block rotating seat is fixedly provided with a glue block pressing plate, and the glue block radial adjusting screw is arranged on the glue block pressing plate and abuts against the glue block; after the fastening bolt between the glue roller and the glue block rotating seat is loosened, the glue block moves in the direction of approaching the glue roller by screwing the glue block radial adjusting screw inward, and the glue block moves in the direction of moving away from the glue roller by unscrewing the glue block radial adjusting screw.

[0020] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue block is detachably fixed on the glue block rotating seat by the fastening bolt, and after the fastening bolt is loosened, the glue block can move in the radial direction of the glue roller relative to the glue block rotating seat, the glue block rotating seat is fixedly provided with a glue block pressing plate, and the glue block radial adjusting screw is arranged on the glue block pressing plate and abuts against the glue block; after the fastening bolt between the glue roller and the glue block rotating seat is loosened, the glue block moves in the direction of approaching the glue roller by screwing the glue block radial adjusting screw inward, and the glue block moves in the direction of moving away from the glue roller by unscrewing the glue block radial adjusting screw.

[0021] Further, the glue roller assembly mechanism in the hot melt adhesive labeling machine, wherein the glue block is detachably fixed on the glue block rotating seat by the fastening bolt, and after the fastening bolt is loosened, the glue block can move in the radial direction of the glue roller relative to the glue block rotating seat, the glue block rotating seat is fixedly provided with a glue block pressing plate, and the glue block radial adjusting screw is arranged on the glue block pressing plate and abuts against the glue block; after the fastening bolt between the glue roller and the glue block rotating seat is loosened, the glue block moves in the direction of approaching the glue roller by screwing the glue block radial adjusting screw inward, and the glue block moves in the direction of moving away from the glue roller by unscrewing the glue block radial adjusting screw.

[0022] The advantages of the present application are: 1. The glue applying assembly and the glue scraping assembly are provided, wherein the glue applying assembly realizes pre-coating of glue on the glue roller; the glue scraping piece and the glue scraping block scraping part in the glue scraping assembly further scrape the glue on the glue roller, that is, the glue scraping assembly further performs two-stage scraping, which greatly improves the uniformity of the glue on the glue roller and effectively prevents the phenomenon of local unevenness of the glue. 2. The elastic mounting structure of the glue scraping block enables the glue scraping piece and the glue scraping block scraping part to be tightly pressed against the glue roller, thereby greatly improving the glue scraping effect. The elastic mounting structure of the glue scraping piece further ensures that the glue scraping piece can be tightly pressed against the outer wall of the glue roller 1, thereby further greatly improving the glue scraping effect and effectively adapting to high-speed production requirements. 3. The setting of the guard plate, the collection cover, the negative pressure fan and the like can effectively guide the directional discharge and collection of the volatile glue, which can effectively prevent the glue from polluting the air in the working environment, thereby ensuring the cleanliness of the filling environment. After filtration by the filter, the gas containing glue can be discharged to avoid pollution of the atmosphere. 4. The mounting structure of the glue scraping block can adjust the tightness between the glue scraping piece and the glue scraping block scraping part and the glue roller, thereby enabling the glue scraping block to be adjusted to the best state of applying glue and adapting to high-speed production requirements. 5. The mounting structure of the glue scraping block enables the tightness between the glue scraping piece and the glue scraping block scraping part and the glue roller to be adjusted, thereby ensuring the glue scraping effect of the glue scraping piece and the glue scraping block scraping part and further ensuring high-speed production requirements. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structure diagram of the glue roller assembly mechanism in the glue melting labeling machine.

[0024] Figure 2 is a structure diagram of the glue roller assembly mechanism in the glue melting labeling machine.

[0025] Figure 3 is a mounting structure diagram of the glue applying assembly.

[0026] Figure 4 is a mounting structure diagram of the label scraping support.

[0027] Figure 5 is Figure 1 is an enlarged structure diagram of part A in DETAILED DESCRIPTION

[0028] The present application will be further described in detail below in combination with the drawings and preferred embodiments.

[0029] Embodiment 1: As shown in Figure 1 , Figure 2 , Figure 3 , the glue roller assembly mechanism in the hot melt glue labeling machine comprises: a glue roller 1, and the outer side of the glue roller 1 is provided with a glue applying assembly 2 and a glue scraping assembly 3.

[0030] The structure of the glue applying assembly 2 comprises a glue applying block 21, the inside of the glue applying block 21 is provided with a glue inlet channel 201 and a glue outlet channel 202, the two ends of the glue inlet channel 201 are connected with a glue inlet port 203 and a glue outlet groove 23 respectively. The two ends of the glue outlet channel 202 are connected with the glue outlet groove 23 and a glue outlet port 204 respectively. The glue inlet port 203 and the glue outlet port 204 are both arranged on the outer wall of the glue applying block 21, and the glue inlet port 203 is connected with a glue input mechanism.

[0031] The side wall of the glue applying block 21 on one side of the glue applying roller 1 is provided with outwardly protruding groove front stoppers 211 and groove rear stoppers 212, which are arranged in sequence and at intervals along the rotation direction of the glue applying roller 1. The groove front stopper 211 and the groove rear stopper 212 form the glue outlet groove 23. The outer end of the groove rear stopper 212 is provided with a rear stopper glue scraping part 2121, which abuts against the outer wall of the glue applying roller 1. The glue applying block 21 is fixedly provided with glue stop flaps 24 on the groove front stopper 211. The outer end of the glue stop flap 24 extends to the outer wall of the glue applying roller 1 and covers the slot of the glue outlet groove 23 in the direction of the groove rear stopper 212, so that the glue outlet groove 23 has pressure. The inside of the glue applying block 21 is provided with a glue applying block heating mechanism 210.

[0032] The structure of the glue scraping assembly 3 comprises a glue scraping block 32 and a glue scraping piece 31 arranged in sequence along the rotation direction of the glue applying roller 1. The outer end of the glue scraping block 32 is provided with a glue scraping block scraping part 321, and the glue scraping piece 31 is installed on the glue scraping block 32. The glue scraping block 32 is elastically arranged along the radial direction of the glue applying roller 1, and the glue scraping piece 31 and the glue scraping block scraping part 321 are both elastically pressed against the outer wall of the glue applying roller 1.

[0033] In this embodiment, the top and bottom of the glue outlet groove 23 are respectively provided with a top silicone rubber pad 231 and a bottom silicone rubber pad 232. The top silicone rubber pad 231 is pressed and fixed on the top of the glue applying block 21 by an upper pressing plate 233 fixed on the glue applying block 21, so that the upper end of the glue outlet groove 23 is sealed. The bottom silicone rubber pad 232 is pressed and fixed on the bottom of the glue applying block 21 by a lower pressing plate 234 fixed on the glue applying block 21, so that the lower end of the glue outlet groove 23 is sealed.

[0034] In this embodiment, the structure of the glue input mechanism comprises a glue tank 25 with a glue tank heating mechanism 254. The glue tank 25 is connected with a glue conveying pipe 252 through a glue pump 251, and the glue conveying pipe 252 is connected to the glue inlet port 203.

[0035] In the embodiment, a glue receiving groove 12 for receiving the glue dropping from the glue roller 1, the glue applying assembly 2 and the glue scraping assembly 3 is arranged on the glue roller base 11 below the glue roller 1. The glue receiving groove 12 is gradually deepened from the two sides of the glue roller 1 to the area below the glue applying block 21, so that the glue in the glue receiving groove 12 is continuously gathered into the glue receiving groove 12 below the glue applying block 21. The glue discharged from the glue discharging port 204 can fall into the glue receiving groove 12. The glue receiving groove 12 is connected with the glue tank 25. In order to ensure the flowability of the glue, the glue roller base 11 below the glue receiving groove 12 is provided with a glue receiving groove heating mechanism 121.

[0036] In addition, the glue roller 1 is provided with a glue roller heating mechanism 13 in the inner cavity of the glue roller 1. The bottom of the glue roller 1 is provided with an exhaust hole 101 connected with the inner cavity of the glue roller 1. The exhaust hole 101 is connected with the glue receiving groove 12. The purpose of connecting the exhaust hole 101 with the glue receiving groove 12 is to discharge the hot air in the inner cavity of the glue roller 1 into the glue receiving groove 12, so as to fully utilize the heat energy and further ensure the flowability of the glue in the glue receiving groove 12.

[0037] In the embodiment, the glue applying block heating mechanism 210, the glue tank heating mechanism 254, the glue receiving groove heating mechanism 121 and the glue roller heating mechanism 13 are all electric heating pipes. The glue tank heating mechanism 254, the glue receiving groove heating mechanism 121 and the glue roller heating mechanism 13 are all used for heating the glue, so as to ensure the flowability of the glue and prevent the glue from solidifying and blocking.

[0038] The working principle is as follows: as shown in Figure 1 , the glue roller 1 rotates along the arrow direction shown in Figure 1 . The glue in the glue tank 25 is pumped into the glue discharging groove 23 through the glue inlet port 203 by the glue pump 251. Part of the glue in the glue discharging groove 23 falls into the glue receiving groove 12 through the glue discharging channel 202 and the glue discharging port 204, and then flows back to the glue tank 25 through the glue receiving groove 12, so as to ensure the flowability of the glue and effectively prevent the glue from solidifying in the glue discharging groove 23.

[0039] The glue in the glue groove 23 is coated on the outer wall of the glue roller 1 moving to the area of the glue coating assembly 2 through the gap between the glue blocking sheet 24 and the groove rear blocking block 212. The glue blocking sheet 24 keeps the glue in the glue groove 23 under a certain pressure, so that the glue can be quickly coated on the outer wall of the glue roller 1. The rear blocking block scraping glue part 2121 on the groove rear blocking block 212 preliminarily scrapes the glue on the glue roller 1. The area of the glue roller 1 coated with glue rotates to the glue scraping assembly 3 position, and the glue scraping sheet 31 and the glue scraping block scraping part 321 successively scrape the glue twice. The two-stage scraping of the glue scraping sheet 31 and the glue scraping block 32 effectively ensures that the glue on the surface of the glue roller 1 is evenly distributed, thereby greatly improving the labeling effect. The area of the glue roller 1 after scraping by the glue scraping assembly 3 moves to the label glue coating station 10, so as to coat the glue on the label to be coated with glue.

[0040] In this embodiment, the difference from embodiment 1 is that the glue coating block 21 is provided with a pressure relief mechanism. The structure of the pressure relief mechanism comprises a pressure relief hole 205 opened on the outer wall of the glue coating block 21, the pressure relief hole 205 is in communication with the glue inlet channel 201, and a pressure relief adjusting bolt 206 is threadedly and fixedly arranged in the pressure relief hole 205. Referring to Figure 2 .

[0041] When the pressure in the glue groove 23 is too large, the pressure relief adjusting bolt 206 is simply screwed outwards, so that the glue is discharged from the pressure relief hole 205. The provision of the pressure relief mechanism in this embodiment can effectively prevent the pressure in the glue groove 23 from being too large.

[0042] In this embodiment, the difference from embodiment 1 is that the glue coating block 21 is provided with a pressure relief mechanism. The structure of the pressure relief mechanism comprises a pressure relief hole 205 opened on the outer wall of the glue coating block 21, the pressure relief hole 205 is in communication with the glue inlet channel 201, and a pressure relief adjusting bolt 206 is threadedly and fixedly arranged in the pressure relief hole 205. Referring to Figure 5 The installation structure of the glue scraping block 32 comprises a glue scraping block mounting seat 320, the glue scraping block 32 is slidably arranged on the glue scraping block mounting seat 320 along the radial direction of the glue roller 1, a compression spring 322 is arranged between the glue scraping block mounting seat 320 and the glue scraping block 32, and the glue scraping sheet 31 and the glue scraping block scraping part 321 are elastically pressed against the glue roller 1 under the action of the compression spring 322.

[0043] Specifically, the slidable connection structure between the glue scraping block 32 and the glue scraping block mounting seat 320 comprises a long strip-shaped connection hole 323 opened on the glue scraping block 32 along the radial direction of the glue roller 1, a shaft shoulder screw 324 is arranged in the connection hole 323, the shaft shoulder screw 324 is fixed on the glue scraping block mounting seat 320, the shaft shoulder part of the shaft shoulder screw 324 is clamped outside the connection hole 323, and the glue scraping block 32 can move back and forth along the radial direction of the glue roller 1 under the guidance of the shaft shoulder screw 324.

[0044] The connection structure between the scraper blade 31 and the scraper block 32 includes: the scraper blade 31 is mounted on the scraper block 32 by a locking bolt 33, and a torsion spring 34 is fitted on the locking bolt 33 between the scraper blade 31 and the scraper block 32, with the two ends of the torsion spring 34 pressing against the scraper blade 31 and the scraper block 32 respectively.

[0045] The elastic mounting structure of the scraper block 32 ensures that both the scraper blade 31 and the scraper block blocking part 321 are tightly pressed against the coating roller 1, thereby greatly improving the scraping effect. The elastic mounting structure of the scraper blade 31 further ensures that the scraper blade 31 can be tightly pressed against the outer wall of the coating roller 1, thereby further greatly improving the scraping effect.

[0046] Example 4: Figure 2 As shown, the difference between this embodiment and embodiments 1, 2, and 3 is that the glue-applying roller 1, glue-applying assembly 2, and glue-scraping assembly are all housed within a closed protective plate 4. A collection hood 5 is provided above the protective plate 4, and a flue gas collection pipe 6 is provided on the collection hood 5. The flue gas collection pipe 6 is connected to a first negative pressure fan 61, and a flue gas discharge pipe 7 is provided at the gas outlet of the first negative pressure fan 61. A filter 71 is provided on the flue gas discharge pipe 7. A liquid discharge port 611 is provided at the bottom of the first negative pressure fan 61.

[0047] In this embodiment, the protective plate 4, collection hood 5, and negative pressure fan 61 effectively guide the volatile adhesive to be discharged and collected, thus preventing the adhesive from being released into the working environment and polluting the air, thereby ensuring the cleanliness of the filling environment. After being filtered by filter 71, the adhesive-laden gas is further protected from atmospheric pollution.

[0048] Example 5: Figure 3 As shown, this embodiment discloses the installation structure of the adhesive application block 21 compared to embodiments 1, 2, 3, and 4. Specifically: the adhesive application block 21 is installed on the adhesive application block rotating seat 28, which is movably fitted outside the first rotating shaft 29. A rotating seat pressure plate 281 is fixed on the outer wall of the adhesive application block rotating seat 28. The rotating seat pressure plate 281 on the side closer to the adhesive application block 21 is pressed by the pressure head of the first elbow clamp 282 installed on the frame, so that the outer end of the glue baffle 24 and the glue scraping part 2121 of the rear block abut against the outer wall of the adhesive application roller 1. A first limit adjustment screw 283 is provided on the outer side of the rotating seat pressure plate 281 on the side away from the adhesive application block 21. The first limit adjustment screw 283 is fixed on the frame outside the rotating seat pressure plate 281 and abuts against the rotating seat pressure plate 281.

[0049] The installation structure of the glue applying block 21 has the following advantages: the first elbow clamp 282 and the first limiting adjusting screw 283 are respectively arranged at the two ends of the rotating seat pressing plate 281, and the first head bolt on the pressing head of the first elbow clamp 282 or the first limiting adjusting screw 283 can be adjusted to adjust the tightness between the glue blocking piece 24 on the glue applying block 21 and the glue scraping part 2121 of the rear blocking block and the glue applying roller 1, so that the glue applying block 21 can be adjusted to the best state of applying glue.

[0050] The elbow clamp is also called a quick clamp or a quick clamp, which is a clamp product for fixing a workpiece through a connecting rod mechanism. According to the mechanical principle of the double rocker mechanism in the mechanical four-bar linkage mechanism, the elbow clamp realizes quick clamping through the dead point principle, has the functions of accurate positioning, quick assembly and disassembly, and self-locking clamping. In the embodiment, the first head bolt 2821 that can move towards or away from the rotating seat pressing plate 281 is arranged on the pressing head of the first elbow clamp 282, and the first head bolt 2821 presses against the rotating seat pressing plate 281. By adjusting the position of the first head bolt 2821, the pressing force on the rotating seat pressing plate 281 can be adjusted. Similarly, by screwing outwards or screwing inwards the first limiting adjusting screw 283, the pressing force of the first limiting adjusting screw 283 on the rotating seat pressing plate 281 can be adjusted. During specific work, the first head bolt 2821 and the first limiting adjusting screw 283 can be adjusted respectively or simultaneously according to the needs, so as to adjust the tightness between the glue blocking piece 24 on the glue applying block 21 and the glue scraping part 2121 of the rear blocking block and the glue applying roller 1, and ensure that the glue applying block 21 is in the best state of applying glue.

[0051] The glue applying block 21 is detachably fixed and installed on the glue applying block rotating seat 28 through a fastening bolt, and after the fastening bolt is loosened, the glue applying block 21 can move back and forth along the radial direction of the glue applying roller 1 relative to the glue applying block rotating seat 28. The glue applying block pressing plate 284 is fixedly arranged on the glue applying block rotating seat 28, and the glue applying block radial adjusting screw 285 is arranged on the glue applying block pressing plate 284 and abuts against the glue applying block 21. After the fastening bolt between the glue applying block 21 and the glue applying block rotating seat 28 is loosened, screwing inwards the glue applying block radial adjusting screw 285 can drive the glue applying block 21 to move relative to the glue applying block rotating seat 28 towards the direction of approaching the glue applying roller 1, and screwing outwards the glue applying block radial adjusting screw 285 can drive the glue applying block 21 to move relative to the glue applying block rotating seat 28 towards the direction of moving away from the glue applying roller 1. Figure 1 or Figure 3To simplify the design, the structure of the adhesive block 21 moving back and forth radially relative to the adhesive block rotating seat 28 along the adhesive roller 1 is not explicitly shown. Typically, a long, narrow connecting hole is simply provided at the connection point between the adhesive block 21 and the adhesive block rotating seat 28 along the radial direction of the adhesive roller 1. The fastening bolt is located within this connecting hole. The radial adjustment screw 285 further adjusts the pressure between the adhesive baffle 24 on the adhesive block 21 and the adhesive scraping part 2121 of the rear stop block and the adhesive roller 1, thereby ensuring that the adhesive block 21 is in the optimal state for adhesive application.

[0052] In this embodiment, the scraper block mounting base 320 is movably fitted outside the second rotating shaft 35. A scraper block mounting base pressure plate 36 is fixed on the outer wall of the scraper block mounting base 320. The scraper block mounting base pressure plate 36 is located at one end of the scraper block 32 and is pressed by the third elbow clamp pressure head of the third elbow clamp 37 mounted on the frame, so that the scraper sheet 31 and the scraper block 32 abut against the outer wall of the coating roller 1. A second limit adjustment screw 38 is provided on the outer side of the scraper block mounting base pressure plate 36 away from the scraper block 32. The second limit adjustment screw 38 is fixed on the frame outside the scraper block mounting base pressure plate 36, and the end of the second limit adjustment screw 38 abuts against the scraper block mounting base pressure plate 36. In this embodiment, the third elbow clamp pressure head of the third elbow clamp 37 is provided with a third pressure head bolt 371 that can move closer to or away from the scraper block mounting base pressure plate 36. The third pressure head bolt 371 presses against the scraper block mounting base pressure plate 36. The pressure force on the scraper block mounting base pressure plate 36 can be adjusted by adjusting the position of the third pressure head bolt 371. Similarly, the pressure force of the second limit adjusting screw 38 on the scraper block mounting base pressure plate 36 can be adjusted by unscrewing the second limit adjusting screw 38 outward or inward. In actual operation, the third pressure head bolt 371 and the second limit adjusting screw 38 can be adjusted separately or simultaneously as needed to adjust the tightness between the scraper blade 31 on the scraper block mounting base 320 and the scraper block scraping part 321 and the glue coating roller 1, thereby ensuring the scraping effect of the scraper blade 31 on the scraper block mounting base 320.

[0053] Example 6: This example differs from Example 5 in that it includes a shovel-marker component 8. For example... Figure 1 As shown, the label scraping assembly 8 includes: a label scraping bracket 81, with a label scraping baffle 82 provided at one end of the label scraping bracket 81 near the glue coating roller 1, the end of the label scraping baffle 82 resting against the outer wall of the glue coating roller 1. The label scraping assembly 8, the glue coating assembly 2, and the glue scraping assembly 3 are arranged sequentially along the rotation direction of the glue coating roller 1; the angle θ between the label scraping baffle 82 and the glue coating roller 1 near the glue coating assembly 2 is an acute angle.

[0054] like Figure 4As shown, the mounting structure of the label shoveling support 81 includes that the end of the label shoveling support 81 away from the glue roller 1 is hingedly connected to a support shaft 84, the support shaft 84 is supported on the glue block rotating seat 28 through a connecting plate, and the outer side of the label shoveling support 81 at one end of the support shaft 84 is provided with a connecting pressing plate 83, and the second elbow pressing head 851 of the second elbow clamp 85 fixed on the glue block rotating seat 28 is pressed on the connecting pressing plate 83, so that the end of the label shoveling stopper 82 is pressed against the outer wall of the glue roller 1.

[0055] In the embodiment, the label shoveling assembly 8 is arranged to shovel off the label when the label moves to the position of the label shoveling assembly 8 along with the glue roller 1, so as to ensure the normal production.

[0056] The advantages of the present application are as follows: 1. The glue applying assembly 2 and the glue scraping assembly 3 are arranged, the glue applying assembly 2 realizes the pre-applying of glue on the glue roller 1, and the glue scraping piece 31 and the glue scraping block scraping part 321 in the glue scraping assembly 3 further scrape the glue on the glue roller 1, that is, the glue scraping assembly 3 further performs two-stage scraping, which greatly improves the uniformity of the glue on the glue roller 1 and effectively prevents the phenomenon of local non-uniformity of the glue. 2. The elastic mounting structure of the glue scraping block 32 enables the glue scraping piece 31 and the glue scraping block scraping part 321 to be tightly pressed against the glue roller 1, thereby greatly improving the scraping effect. The elastic mounting structure of the glue scraping piece 31 further ensures that the glue scraping piece 31 is tightly pressed against the outer wall of the glue roller 1, thereby further greatly improving the scraping effect.

[0057] 3. The arrangement of the guard plate 4, the collecting cover 5, the negative pressure fan 61 and the like can effectively guide the directional discharge and collection of the volatilized glue, which can effectively prevent the glue from polluting the air in the working environment, thereby ensuring the cleanliness of the filling environment. After being filtered by the filter 71, the gas containing glue can be discharged to avoid pollution of the atmosphere. 4. The mounting structure of the glue block enables the tightness between the glue scraping part 2121 of the glue scraping block 21 and the glue roller 1 to be adjusted, thereby enabling the glue scraping block 21 to be adjusted to the best state of applying glue. 5. The mounting structure of the glue scraping block enables the tightness between the glue scraping piece 31 and the glue scraping block scraping part 321 and the glue roller 1 to be adjusted, thereby ensuring the scraping effect of the glue scraping piece 31 and the glue scraping block scraping part 321.

Claims

1. An applicator roller assembly mechanism in a hot melt glue labelling machine, comprising: The glue roller is provided with a glue applying assembly and a glue scraping assembly on the outer side, characterized in that the glue applying assembly comprises a glue applying block, an inlet channel and a discharge channel are arranged in the glue applying block, two ends of the inlet channel are respectively connected with an inlet port and a glue discharge groove, two ends of the discharge channel are respectively connected with the glue discharge groove and a discharge port, the inlet port and the discharge port are arranged on the outer wall of the glue applying block, the inlet port is connected with a glue input mechanism, a groove front stopper and a groove rear stopper are arranged on the side wall of the glue applying block on one side of the glue roller, the groove front stopper and the groove rear stopper are arranged in sequence and are spaced apart along the rotating direction of the glue roller, the groove front stopper and the groove rear stopper form the glue discharge groove, an outer end of the groove rear stopper is provided with a rear stopper glue scraping part which abuts against the outer wall of the glue roller, a glue stopper is fixedly arranged on the groove front stopper, an outer end of the glue stopper is inclined towards the groove rear stopper, extends to the outer wall of the glue roller and covers the groove mouth of the glue discharge groove to make the glue discharge groove have pressure. The glue scraping assembly comprises a glue scraping piece and a glue scraping block which are arranged in sequence along the rotating direction of the glue roller, the glue scraping piece is mounted on the glue scraping block, an outer end of the glue scraping block is provided with a glue scraping block scraping part, the glue scraping block is elastically arranged along the radial direction of the glue roller, so that the glue scraping piece and the glue scraping block scraping part are elastically pressed against the outer wall of the glue roller.

2. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: A top silicone rubber pad and a bottom silicone rubber pad are arranged at the top and the bottom of the glue discharge groove respectively, the top silicone rubber pad is pressed and fixed by an upper pressing plate on the top of the glue applying block to seal the upper end of the glue discharge groove, and the bottom silicone rubber pad is pressed and fixed by a lower pressing plate on the bottom of the glue applying block to seal the lower end of the glue discharge groove.

3. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: A glue applying block heating mechanism is arranged in the glue applying block.

4. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: A pressure relief mechanism is arranged on the glue applying block, the pressure relief mechanism comprises a pressure relief hole arranged on the outer wall of the glue applying block, the pressure relief hole is connected with the inlet channel, and a pressure relief adjusting bolt is threadedly and fixedly arranged in the pressure relief hole.

5. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: The glue input mechanism comprises a glue tank with a glue tank heating mechanism, the glue tank is connected with a glue conveying pipe through a glue pump, and the glue conveying pipe is connected with the inlet port.

6. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 5, wherein: A glue receiving groove is arranged on a glue roller base under the glue roller to receive glue falling from the glue roller, the glue applying assembly and the glue scraping assembly, the glue receiving groove is gradually deepened from both sides of the glue roller to the lower area of the glue applying block, so that the glue in the glue receiving groove is continuously gathered into the glue receiving groove in the lower area of the glue applying block, the glue discharged from the discharge port can fall into the glue receiving groove, and the glue receiving groove is connected with the glue tank.

7. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 6, wherein: A glue roller heating mechanism is arranged in the inner cavity of the glue roller, an exhaust hole is arranged in the bottom of the glue roller and connected with the inner cavity of the glue roller, and the exhaust hole is connected with the glue receiving groove.

8. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 6, wherein: A glue receiving groove heating mechanism is arranged in the glue roller base at the bottom of the glue receiving groove.

9. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: The installation structure of the glue scraping block comprises a glue scraping block mounting seat, the glue scraping block is slidably arranged on the glue scraping block mounting seat along the radial direction of the glue roller, a compression spring is arranged between the glue scraping block mounting seat and the glue scraping block, and the glue scraping piece is elastically pressed against the glue roller under the action of the compression spring.

10. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 9, wherein: The slidable connection structure between the glue scraping block and the glue scraping block mounting seat comprises a long strip-shaped connecting hole arranged on the glue scraping block along the radial direction of the glue roller, and a shaft shoulder screw is arranged in the connecting hole, the shaft shoulder screw is fixed on the glue scraping block mounting seat, the shaft shoulder portion of the shaft shoulder screw is clamped outside the connecting hole, and the glue scraping block can move back and forth along the radial direction of the glue roller under the guidance of the shaft shoulder screw.

11. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 9, wherein: The connection structure between the glue scraping piece and the glue scraping block comprises that the glue scraping piece is mounted on the glue scraping block through a locking bolt, and a torsion spring is sleeved on the locking bolt between the glue scraping piece and the glue scraping block, and the two ends of the torsion spring are pressed against the glue scraping piece and the glue scraping block respectively.

12. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: The glue roller, the glue applying assembly and the glue scraping assembly are arranged in the closed guard plate, a collecting cover is arranged above the guard plate, a flue gas collecting pipe is arranged on the collecting cover, the flue gas collecting pipe is connected with the first negative pressure fan, a gas outlet of the first negative pressure fan is provided with a flue gas discharging pipe, a filter is arranged on the flue gas discharging pipe, and a liquid discharging outlet is arranged at the bottom of the first negative pressure fan.

13. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 1, wherein: The scraping label assembly comprises a scraping label support, and a scraping label stopper is arranged on one end of the scraping label support close to the glue roller, and the end of the scraping label stopper is clamped against the outer wall of the glue roller.

14. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 13, wherein: The glue applying block is mounted on the glue applying block rotating seat, the glue applying block rotating seat is movably sleeved on the first rotating shaft, a rotating seat pressing plate is fixed on the outer wall of the glue applying block rotating seat, the rotating seat pressing plate close to the glue applying assembly is clamped by the first elbow clamp mounted on the rack, a first pressing head bolt capable of moving close to or away from the rotating seat pressing plate is arranged on the first elbow clamp pressing head, and the first pressing head bolt is pressed against the rotating seat pressing plate, so that the outer end of the glue piece and the rear block scraping part are abutted against the outer wall of the glue roller.

15. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 14, wherein: The glue applying block is detachably fixed on the glue applying block rotating seat through the fastening bolt, the glue applying block can move in the radial direction of the glue roller relative to the glue applying block rotating seat after the fastening bolt is loosened, a glue applying block pressing plate is fixed on the glue applying block rotating seat, a glue applying block radial direction adjusting screw is arranged on the glue applying block pressing plate, and the glue applying block radial direction adjusting screw is pressed against the glue applying block. The glue applying block is detachably fixed on the glue applying block rotating seat through the fastening bolt, the glue applying block can move in the radial direction of the glue roller relative to the glue applying block rotating seat after the fastening bolt is loosened, a glue applying block pressing plate is fixed on the glue applying block rotating seat, a glue applying block radial direction adjusting screw is arranged on the glue applying block pressing plate, and the glue applying block radial direction adjusting screw is pressed against the glue applying block.

16. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 14, wherein: The shoveling mark support mounting structure comprises: a shoveling mark support hinged at one end away from the glue roller to a support shaft, the support shaft is fixedly connected between the glue block rotating seat, the outer side of the shoveling mark support at one end of the support shaft is provided with a connecting pressing plate, the second elbow clamp pressing head of the second elbow clamp fixed on the glue block rotating seat is pressed against the connecting pressing plate, so that the end of the shoveling mark blocking piece is pressed against the outer wall of the glue roller.

17. The glue roll assembly mechanism in a hot melt glue labelling machine according to claim 9, wherein: The glue scraping block mounting seat is movably sleeved outside the second rotating shaft, the outer wall of the glue scraping block mounting seat is fixed with a glue scraping block mounting seat pressing plate, one end of the glue scraping block mounting seat pressing plate is pressed against by the third elbow clamp pressing head of the third elbow clamp mounted on the rack, the third elbow clamp pressing head is provided with a third pressing head bolt capable of moving close to or away from the glue scraping block mounting seat pressing plate, the third pressing head bolt is pressed against the glue scraping block mounting seat pressing plate, so that the glue scraping piece and the glue scraping block are pressed against the outer wall of the glue roller; the outer side of one end of the glue scraping block mounting seat pressing plate away from the glue scraping block is provided with a second limiting adjusting screw, the second limiting adjusting screw is fixed on the rack outside the glue scraping block mounting seat pressing plate, and the end of the second limiting adjusting screw is abutted against the glue scraping block mounting seat pressing plate.

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