Hot melt adhesive duster

Abstract

The present application relates to a kind of hot melt adhesive powder spraying machine, including mesh belt, upper suction powder device, lower suction paper device, collection hopper, powder spraying device, mesh belt powder removal device and secondary recovery tower, powder spraying device is located on the upper side of the mesh belt support section above collection hopper and has main powder spraying port, the first suction powder port of upper suction powder device is located on the upper side of mesh belt support section while second suction powder port is connected with the bottom of collection hopper, first suction powder port and second suction powder port are connected by upper suction powder pipe A, upper suction powder device is connected with the secondary recovery first input port of secondary recovery tower, lower suction paper device is connected with the secondary recovery second input port of secondary recovery tower, upper suction powder device and lower suction paper device are all connected with powder spraying device, mesh belt powder removal device is connected with the secondary recovery third input port of secondary recovery tower, secondary recovery tower has third powder spraying port and third powder spraying port is connected with upper suction powder pipe A, powder is completely recovered, and recovery process does not need manual intervention.

Description

Technical Field

[0001] This invention relates to the field of powder spraying machine technology, and in particular to a hot melt adhesive powder spraying machine. Background Technology

[0002] Currently, text and patterns on clothing are typically applied using heat transfer printing. This requires first creating heat transfer paper for garment factories. The process involves applying hot melt adhesive powder to the transfer paper using a powder-sprinkling machine. However, traditional powder-sprinkling machines lack effective methods for thoroughly recycling and reusing the powder. Incomplete recycling results in residual powder causing unwanted spots around the text and patterns, significantly impacting quality. Furthermore, the recycling process requires manual intervention, leading to high labor intensity for workers. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, the present invention provides a hot melt adhesive powder sprayer that can thoroughly recover powder without human intervention during the recovery process.

[0004] The technical solution adopted in this invention is: a hot melt adhesive powder spraying machine, including a mesh belt, an upper powder suction device, a lower paper suction device, a collection hopper, a powder spraying device, a mesh belt powder removal device, and a secondary recovery tower. The powder spraying device is located on the upper side of the mesh belt support section above the collection hopper and has a main powder spraying port. The first powder suction port of the upper powder suction device is located on the upper side of the mesh belt support section, and the second powder suction port is connected to the bottom of the collection hopper. The first powder suction port and the second powder suction port are connected by an upper powder suction pipe A. The air outlet of the upper powder suction device is connected to the secondary recovery first input port of the secondary recovery tower. The paper suction port of the lower paper suction device is located on the lower side of the mesh belt support section, and the outlet is connected to the secondary recovery second input port of the secondary recovery tower. Both the upper powder suction device and the lower paper suction device are connected to the powder spraying device. The mesh belt powder removal device is connected to the secondary recovery third input port of the secondary recovery tower, and the powder removal port of the mesh belt powder removal device is located on the lower side of the mesh belt recovery section. The secondary recovery tower has a third powder spraying port, and the third powder spraying port is connected to the upper powder suction pipe A.

[0005] As a further improvement of the present invention, the upper powder suction device includes an upper powder suction nozzle, an upper suction recovery tower and an upper suction fan. The upper powder suction nozzle is a first powder suction port and is connected to the upper suction fan. The upper suction recovery tower is connected to the upper suction fan. The upper suction recovery tower has a first powder spraying port corresponding to the powder spraying device. The air outlet of the upper suction recovery tower is connected to the secondary recovery first input port of the secondary recovery tower.

[0006] As a further improvement of the present invention, the bottom of the upper suction and recovery tower is provided with a powder dispensing switch corresponding to the powder spraying device. The powder dispensing switch includes a switch cylinder and a switch path selection device installed at the bottom of the upper suction and recovery tower. The switch cylinder is provided with a switch powder inlet connected to the upper suction and recovery tower and two switch powder outlets. The switch powder inlet and each switch powder outlet are connected to the switch path selection device. The switch path selection device slides along the axial direction of the switch cylinder. Each switch powder inlet and each switch powder outlet are not connected during the entire process of the switch path selection device sliding along the switch cylinder. Each switch powder outlet constitutes a first powder spraying port.

[0007] As a further improvement of the present invention, the upper powder suction nozzle includes two powder suction nozzle side plates, a powder suction opening and closing device, a first powder suction plate and a second powder suction plate. The first powder suction plate and the second powder suction plate are fixedly mounted opposite each other between the two powder suction nozzle side plates, and a suction nozzle channel is formed between the first powder suction plate and the second powder suction plate. The first powder suction plate is provided with a suction nozzle control cavity at the suction nozzle channel. Each of the powder suction nozzle side plates is provided with a suction nozzle control channel communicating with the suction nozzle control cavity. The powder suction opening and closing device includes an opening and closing movable plate and an opening and closing control mechanism. The opening and closing movable plate is installed in the suction nozzle control cavity and its two ends slide and rub against the corresponding powder suction nozzle side plates. The opening and closing control mechanism passes through the suction nozzle control channel and extends into the suction nozzle control cavity and is drivenly connected to the opening and closing movable plate. The opening and closing movable plate slides in the suction nozzle control cavity along the width direction of the suction nozzle channel under the drive of the opening and closing control mechanism.

[0008] As a further improvement of the present invention, the lower paper suction device includes a lower paper suction air box, a lower paper suction fan, and a lower paper suction recovery tower. The lower paper suction air box is connected to the lower paper suction fan, the lower paper suction recovery tower is connected to the lower paper suction fan, the lower paper suction recovery tower has a second powder spraying port corresponding to the powder spraying device, and the lower paper suction recovery tower is connected to the secondary recovery second input port of the secondary recovery tower.

[0009] As a further improvement of the present invention, the lower suction air box includes a lower suction air box body, a sealing plate operating rod, and a plurality of lower suction sealing devices installed in the lower suction air box body. The lower suction air box body includes a suction air inlet plate. Each lower suction sealing device includes a sealing plate assembly, a pair of lower suction sealing guide rails, and a lower suction pushing assembly. The pair of lower suction sealing guide rails are arranged opposite to each other on the inner surface of the lower suction air box. Each lower suction pushing assembly is fixedly installed on the inner surface of the lower suction air box. The sealing plate operating rod extends into the lower suction air box body and is detachably and driveably connected to each lower suction pushing assembly. The sealing plate assembly is driveably connected to the lower suction pushing assembly. When the sealing plate assembly is in the upper limit working position, it closes the suction air inlet plate.

[0010] As a further improvement of the present invention, the mesh belt dust removal device includes a third fan, a mesh belt dust removal box, and a dust removal brush device. The mesh belt dust removal box has a dust removal port and is connected to the third fan. The dust removal port is located on the lower side of the mesh belt recovery section. The third fan is connected to the secondary recovery third input port of the secondary recovery tower. The dust removal brush device is located on the upper side of the mesh belt recovery section and rubs against the mesh belt recovery section. The dust removal brush device is located on the upper side of the collection hopper. The dust removal brush device includes several dust removal brush components that can be reversed in direction.

[0011] As a further improvement of the present invention, the secondary recovery tower includes, from bottom to top, a recovery tower discharge pipe, a conical shell, an outer shell, a sealing top cover, a sliding inner cylinder, an inner cylinder lifting device, and three secondary recovery air inlet pipes. The sealing top cover is provided with an inner cylinder mounting hole. The sliding inner cylinder passes through the inner cylinder mounting hole and slides up and down along the inner cylinder mounting hole. The recovery tower discharge pipe forms a third powder spraying port. The three secondary recovery air inlet pipes are all tangentially arranged on the outer shell. The three secondary recovery air inlet pipes respectively form a secondary recovery first input port, a secondary recovery second input port, and a secondary recovery third input port. The inner cylinder lifting device is installed on the top surface of the sealing top cover and is connected to the sliding inner cylinder in a transmission manner.

[0012] As a further improvement of the present invention, the powder spraying device includes a photosensitive switch, a powder spraying hopper, and a powder spraying roller assembly. The bottom of the powder spraying hopper is provided with a main powder spraying port. When the photosensitive switch senses paper, it instructs the powder spraying roller assembly to rotate and spray powder through the main powder spraying port. When the photosensitive switch does not sense paper, it instructs the powder spraying roller assembly to stop rotating, so that the main powder spraying port does not spray powder.

[0013] As a further improvement of the present invention, the powder spraying roller assembly includes two powder spraying rollers facing each other, and a powder spraying channel is formed between the two powder spraying rollers. The powder spraying channel is located below the main powder spraying port.

[0014] The beneficial effects of this invention are:

[0015] 1: The powder spraying device is located on the upper side of the mesh belt support section above the collection hopper and has a main powder spraying port. The main powder spraying port is placed above the collection hopper, and the powder is directly recycled to the collection hopper by gravity.

[0016] 2: The first powder suction port of the upper powder suction device is located on the upper side of the mesh belt support section, while the second powder suction port is connected to the bottom of the collection hopper. The first powder suction port and the second powder suction port are connected by the upper powder suction pipe A. The secondary recovery tower has a third powder spraying port, which is connected to the upper powder suction pipe A. The powder recovered by the secondary recovery tower returns to the upper powder suction device through the powder suction pipe A. The upper powder suction device includes the upper powder recovery tower. In this way, the powder completes automatic circulation without manual intervention, resulting in low labor intensity.

[0017] 3: The air outlet of the upper powder suction device is connected to the first secondary recycling inlet of the secondary recycling tower. The paper suction port of the lower paper suction device is located on the lower side of the mesh belt support section, and the outlet is connected to the second secondary recycling inlet of the secondary recycling tower. Both the upper powder suction device and the lower paper suction device are connected to the powder spraying device. The mesh belt powder removal device is connected to the third secondary recycling inlet of the secondary recycling tower, and the powder removal port of the mesh belt powder removal device is located on the lower side of the mesh belt recycling section. After all-round powder removal from the upper and lower sides of the heat transfer paper and the mesh belt, the powder is cleanly and thoroughly recovered. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a cross-sectional view of the upper powder suction nozzle.

[0020] Figure 3 This is a schematic diagram of the retracted state of the opening and closing movable plate.

[0021] Figure 4 This is a schematic diagram showing the extended state of the opening and closing movable plate.

[0022] Figure 5 This is a schematic diagram of the side plate structure of the powder suction nozzle.

[0023] Figure 6 This is a schematic diagram of the first powder-absorbing plate structure.

[0024] Figure 7 This is a schematic diagram of the movable inclined block structure.

[0025] Figure 8 This is a schematic diagram of the width control plate structure.

[0026] Figure 9 This is a schematic diagram showing the powder dispensing switch in the retracted limit position.

[0027] Figure 10 This is a schematic diagram showing the powder dispensing switch in the middle position.

[0028] Figure 11 This is a schematic diagram showing the powder dispensing switch in the top-out limit position.

[0029] Figure 12 This is a schematic diagram of the powder dispensing switch structure.

[0030] Figure 13 for Figure 12 A schematic diagram of the state at point A in the middle.

[0031] Figure 14 This is a schematic diagram of the lower suction paper fan box structure.

[0032] Figure 15 for Figure 14 Schematic diagram of the structure at point B.

[0033] Figure 16 This is a schematic diagram showing the installation relationship between the sealing plate assembly and the lower suction paper sealing guide rail.

[0034] Figure 17 This is a schematic diagram of the enclosed plate assembly structure.

[0035] Figure 18 This is a schematic diagram of the closed-plate operating lever structure.

[0036] Figure 19 This is a schematic diagram of the brushing device.

[0037] Figure 20 for Figure 19 Enlarged diagram of point C in the middle.

[0038] Figure 21 This is a schematic diagram of the brush assembly structure.

[0039] Figure 22 This is a cross-sectional view of the guide rail body.

[0040] Figure 23 This is a cross-sectional view of the keyway clearance groove of the guide rail body.

[0041] Figure 24 This is a sectional view of the sealing arc track.

[0042] Figure 25 This is a schematic diagram showing the installation position of the dust sweeping sprocket.

[0043] Figure 26 This is a schematic diagram of the secondary recovery tower structure.

[0044] Figure 27 This is a partial cross-sectional schematic diagram of the secondary recovery tower.

[0045] Figure 28 This is a schematic diagram of the sliding inner cylinder structure.

[0046] Figure 29 This is a top-view schematic diagram of the secondary recovery tower.

[0047] Figure 30 This is a cross-sectional schematic diagram of the drag-reducing core for fins.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Mesh belt; 11. Mesh belt support section; 12. Mesh belt recovery section;

[0050] 2. Upper powder suction device; 21. Upper powder suction nozzle; 211. Powder suction nozzle side plate; 2111. Nozzle control channel; 212. Powder suction opening and closing device; 2121. Opening and closing movable plate; 21211. Movable inclined block; 21212. Shaping protrusion; 21231. Width control plate; 212311. Control inclined block; 21232. Width control gear; 21233. Width control rod; 213. First powder suction plate; 2131. Nozzle control cavity; 214. Second powder suction plate; 215. Nozzle channel; 216. Vortex cavity; 22. Second powder suction port; 23. Upper powder suction tube A; 24. 241. Upper suction recovery tower; 241. Powder discharge switch; 2411. Switch cylinder; 24111. Switch powder inlet; 24112. Switch powder outlet; 24113. Mounting plate; 2412. Switch power component; 2413. Connecting rod; 24131. Shock-absorbing pad; 2414. Switch sealing ring; 24141. First collection chamber; 24142. Second collection chamber; 24143. Third collection chamber; 2415. Powder discharge device; 24151. Powder discharge cover plate; 24152. Fastening wrench; 241521. Eccentric hook; 241511. Powder discharge hook; 25. Upper suction fan;

[0051] 3. Lower paper suction device; 31. Lower paper suction air box; 311. Lower paper suction air box body; 3111. Paper suction air inlet plate; 31111. Lower paper suction air inlet hole; 3112. Lower paper suction upper inclined plate; 312. Sealing plate operating rod; 3121. Operating rod gear section; 3122. Operating rod cylindrical section; 313. Lower paper suction sealing device; 3131. Sealing plate assembly; 31311. Lower paper suction sealing plate; 313111. Sealing plate guide post; 31312. Sealing plate push rod; 3132. Lower paper suction sealing guide rail; 31321. Sealing plate support plate; 3133. Lower paper suction pushing assembly; 31331. Push gear mounting plate; 313311. Operating rod through hole; 31332. Lower paper suction pushing gear; 32. Lower paper suction fan; 33. Lower suction recovery tower; 331. Second powder spraying port;

[0052] 4. Material collection hopper;

[0053] 5. Powder spraying device; 51. Main powder spraying nozzle;

[0054] 6. Mesh belt dust removal device; 61. Third fan; 62. Mesh belt dust removal box; 63. Dust removal device; 631. Dust removal assembly; 6311. Brush limiting section; 6312. Brush guide section; 6313. Brush section; 6321. First circular transition zone; 6322. Second circular transition zone; 6323. Guide groove; 6324. Guide rail limiting cavity; 633. Dust removal sprocket; 6331. Dust removal power wrench; 634. Sealing arc rail; 6341. Arc rail opening; 635. Guide rail body; 6351. Sprocket clearance groove; 636. Elastic fastener;

[0055] 7. Secondary recovery tower; 71. Secondary recovery first inlet; 72. Secondary recovery second inlet; 73. Secondary recovery third inlet; 74. Third powder spraying port; 75. Sliding inner cylinder; 751. Finned drag reduction core; 7511. Fin; 752. Inner cylinder lifting ring; 7521. Inner cylinder lifting lug; 75211. Threaded hole; 753. Lifting screw; 754. Two guide sprockets; 755. Drive sprocket; 756. Chain; 76. Conical shell; 77. Outer shell; 78. Sealing top cover; 79. Secondary recovery air inlet pipe; 791. Circulation gap. Detailed Implementation

[0056] The present invention will be further described below with reference to the accompanying drawings:

[0057] As shown in Figures 1-30, this embodiment provides a hot melt adhesive powder sprayer, including a mesh belt 1, an upper powder suction device 2, a lower paper suction device 3, a collection hopper 4, a powder spraying device 5, a mesh belt powder removal device 6, and a secondary recovery tower 7.

[0058] In this embodiment, the powder spraying device 5 is located on the upper side of the mesh belt support section 11 above the collection hopper 4 and has a main powder spraying port 51. The main powder spraying port 51 is placed above the collection hopper 4, and the powder is directly recovered to the collection hopper 4 by gravity. The first powder suction port of the upper powder suction device 2 is located on the upper side of the mesh belt support section 11, and the second powder suction port 22 is connected to the bottom of the collection hopper 4. The first powder suction port and the second powder suction port 22 are connected by an upper powder suction pipe A23. The air outlet of the upper powder suction device 2 is connected to the secondary recovery first input port 71 of the secondary recovery tower 7. The upper powder suction device 2 has an upper recovery tower 24, and the air outlet refers to the air outlet of the upper recovery tower 24. The paper suction port of the lower paper suction device 3 is located on the lower side of the mesh belt support section 11, and the discharge port is connected to the secondary recovery second input port 72 of the secondary recovery tower 7. The lower paper suction device 3 has a lower recovery tower 33, and the discharge port refers to the discharge port of the lower recovery tower 33. The upper powder suction device 2 and the lower paper suction device 3 are both connected to the powder spraying device 5. Specifically, the bottom of the lower suction recovery tower 33 and the upper suction recovery tower 24 are respectively connected to the powder spraying device 5. The mesh belt powder removal device 6 is connected to the secondary recovery third input port 73 of the secondary recovery tower 7, and the powder removal port of the mesh belt powder removal device 6 is located on the lower side of the mesh belt recovery section 12. The mesh belt powder removal device 6 has a mesh belt powder removal box 62, and the powder removal port refers to the suction port of the mesh belt powder removal box 62. The secondary recovery tower 7 has a third powder spraying port 74, and the third powder spraying port 74 is connected to the upper powder suction pipe A23. In this way, the powder-air mixture sucked by the upper powder suction device 2 and the lower paper suction device 3 will be transported to the secondary recovery tower 7 for recycling again after undergoing its own first powder removal. Furthermore, the powder recovered by the secondary recovery tower 7 will enter the upper powder suction device 2 through the upper powder suction pipe A23 for automatic recycling again. The recycling process does not require manual intervention and the recycling is thorough.

[0059] In this embodiment, the upper powder suction device 2 includes an upper powder suction nozzle 21, an upper suction recovery tower 24, and an upper suction fan 25. The upper powder suction nozzle 21 is the first powder suction port and is connected to the upper suction fan 25. It is used to suck away excess powder from the heat transfer paper coming from the direction of the powder spraying device 5 on the upper side of the mesh belt support section 11. The upper suction recovery tower 24 is connected to the upper suction fan 25. The upper suction recovery tower 24 has a first powder spraying port corresponding to the powder spraying device 5. After the gas-powder mixture sucked in by the upper powder suction nozzle 21 is recovered by the upper suction recovery tower 24 for the first time, most of the powder has been separated. This powder falls back to the powder spraying device 5 from the first powder spraying port at the bottom of the upper suction recovery tower 24. The air outlet of the upper suction recovery tower 24 is connected to the secondary recovery first input port 71 of the secondary recovery tower 7. The gas flowing out of the air outlet of the upper suction recovery tower 24 still contains a small amount of powder. This powder is input into the secondary recovery tower 7 for re-recovery from the secondary recovery first input port 71.

[0060] In this embodiment, the bottom of the upper suction and recovery tower 24 is provided with a powder discharge switch 241 corresponding to the powder spraying device 5. The powder discharge switch 241 includes a switch cylinder 2411 installed at the bottom of the upper suction and recovery tower 24 and a switch path selection device. The switch cylinder 2411 is provided with a switch powder inlet 24111 connected to the upper suction and recovery tower 24 and two switch powder outlets 24112. The switch powder inlet 24111 is rectangular. Mounting plates 24113 are fixedly installed on both sides of the switch powder inlet 24111 parallel to the axial direction. The axial direction of the switch cylinder 2411 is parallel to the mounting plates 24113. The mounting plates 24113 are fixedly installed at the bottom of the upper suction and recovery tower 24.

[0061] The powder inlet 24111 and each powder outlet 24112 are connected to the switch path selection device, which slides axially along the switch cylinder 2411. During the entire sliding process of the switch path selection device along the switch cylinder 2411, the powder inlet 24111 and each powder outlet 24112 are not connected. This isolates the direct connection between the powder inlet 24111 and the powder outlet 24112, preventing air from being drawn in from the powder outlet 24112 under high-speed airflow. The powder discharge switch 241 prevents the separated powder from falling, thus ensuring the continuous operation and production of the recovery tower. The switch cylinder 2411 is provided with several parallel strip holes, the length direction of each strip hole is parallel to the axis of the switch cylinder 2411, and each strip hole forms a switch powder outlet 24112. Each switch powder outlet 24112 constitutes the first powder spraying port. The length direction of the strip holes is parallel to the axis, so that the switch path selection device will not frequently rub against the strip holes during axial sliding, thus extending the service life of the switch path selection device.

[0062] The switching path selection device includes a switching power component 2412, a connecting rod 2413, and four parallel switching sealing rings 2414 fixedly mounted on the connecting rod 2413. Both ends of the connecting rod 2413 are equipped with shock-absorbing pads 24131, which buffer and reduce vibration when the switching power component 2412 is activated. Adjacent sealing rings, along the ejection direction of the switching power component 2412, sequentially form a first collection chamber 24141, a second collection chamber 24142, and a third collection chamber 24143 with the cylinder. The switching power component 2412 has three working positions: a retraction limit position, a middle position, and an ejection limit position. The switching power component 2412 is preferably a cylinder. When the switching power component 2412 is in the retraction limit position, the first collection chamber 24141 is connected to the switching powder outlet 24112, and the third collection chamber 24143 is connected to the switching powder inlet 2411. 1. At this time, the powder in the first collecting chamber 24141 is spilled out from the switch powder outlet 24112, while the third collecting chamber 24143 collects powder from the switch powder inlet 24111. When the switch power component 2412 is in the ejection limit position, the first collecting chamber 24141 is connected to the switch powder inlet 24111, while the third collecting chamber 24143 is connected to another switch powder outlet 24112. At this time, the powder in the third collecting chamber 24143 is spilled out from the switch powder outlet 24112, while the first collecting chamber 24141 collects powder from the switch powder inlet 24111. When the switch power component 2412 is in the middle position, the second collecting chamber 24142 is connected to the switch powder inlet 24111. This situation only occurs briefly when the switch power component 2412 switches between the ejection limit position and the retraction limit position. The second collecting chamber 24142 loads powder in this state.

[0063] The powder discharge switch 241 also includes a powder discharge device 2415. The switch cylinder 2411 is provided with a powder discharge hole, which is located below the switch powder inlet 24111. This hole is used to discharge the powder in the second collection chamber 24142 when the switch path selection device is in the middle position, preventing blockage. The powder discharge device 2415 includes a powder discharge cover plate 24151 hinged to the powder discharge hole and a tightening wrench 24152. The tightening wrench 24152 is rotatably mounted on the switch cylinder 241. 1. An eccentric hook 241521 is provided on the powder discharge cover plate 24151, and a powder discharge hook 241511 is provided on the powder discharge cover plate 24151. The eccentric hook 241521 and the powder discharge hook 241511 can be detachably installed. The powder discharge cover plate 24151 can be detachably covered to cover the powder discharge hole. After the eccentric hook 241521 hooks the powder discharge hook 241511, it continues to rotate. The eccentric hook 241521 gradually pulls the powder discharge hook 241511 closer, thereby pressing the powder discharge cover plate 24151 tightly at the powder discharge hole.

[0064] In this embodiment, the upper powder suction nozzle 21 includes two powder suction nozzle side plates 211, a powder suction opening and closing device 212, a first powder suction plate 213, and a second powder suction plate 214. The first powder suction plate 213 and the second powder suction plate 214 are fixedly mounted opposite each other between the two powder suction nozzle side plates 211. A suction nozzle channel 215 is formed between the first powder suction plate 213 and the second powder suction plate 214. The first powder suction plate 213 is provided with a suction nozzle control cavity 2131 at the suction nozzle channel 215. Each powder suction nozzle side plate 211 is provided with a suction nozzle control channel 2111 communicating with the suction nozzle control cavity 2131. The powder suction opening and closing device 212 includes an opening and closing movable plate 2121 and an opening and closing control mechanism. The mechanism controls the sliding of the opening and closing movable plate 2121 along the nozzle control cavity 2131. The opening and closing movable plate 2121 is installed in the nozzle control cavity 2131 and its two ends slide and rub against the corresponding powder suction nozzle side plate 211. The opening and closing control mechanism passes through the nozzle control channel 2111 and extends into the nozzle control cavity 2131 and is connected to the opening and closing movable plate 2121. Under the transmission of the opening and closing control mechanism, the opening and closing movable plate 2121 slides in the nozzle control cavity 2131 along the width direction of the nozzle channel 215. The nozzle control channel 2111 is used to restrict the opening and closing control mechanism to prevent the opening and closing control mechanism from retracting during the sliding of the opening and closing movable plate 2121.

[0065] The opening and closing movable plate 2121 includes several movable inclined blocks 21211. Each movable inclined block 21211 points in the same direction and is neither parallel nor perpendicular to the width direction of the suction channel 215, but has a certain angle. The movable inclined blocks 21211 are embedded in the opening and closing control mechanism. The opening and closing control mechanism slides within the suction channel 2111 along a direction perpendicular to the length of the suction channel 215. The opening and closing control mechanism presses the movable inclined blocks 21211 along a direction perpendicular to the width direction of the suction channel 215, causing the inclined blocks to... Moving along the width of the suction channel 215, this structure ensures that the movable inclined block 2121 is installed on the opening and closing movable plate 2121 and slides synchronously at all points, ensuring that the opening and closing movable plate 2121 will not be tilted, and that the width of the suction channel 215 is consistent at all points. The side of the opening and closing movable plate 2121 near the suction channel 215 has a shaping protrusion 21212, the lowest point of which is flush with the lowest point of the second powder suction plate 214, ensuring the integrity of the suction channel 215.

[0066] The first powder suction plate 213 and the second powder suction plate 214 form a vortex cavity 216. The cross-sectional shape of the vortex cavity 216 is arc-shaped. When the air-powder mixture jet passes through the suction nozzle channel 215, it drives the air in the vortex cavity 216 to rotate and form a vortex. The powder enters the vortex cavity 216 and, under the action of centrifugal force, rubs against the inner wall of the vortex cavity 216 to produce the first dispersion. When the powder leaves the vortex cavity 216, it collides with other powder and the inner wall of the top channel of the vortex cavity 216 to produce the second dispersion, thus avoiding the blockage of the suction nozzle channel 215.

[0067] In this embodiment, the opening and closing control mechanism includes a width control plate 21231 and a width control power assembly that is pulverizedly connected to the width control plate 21231. The width control power assembly is fixedly mounted on the powder suction nozzle side plate 211 and pulverizedly connected to the width control plate 21231. The width control plate 21231 includes a plurality of control inclined blocks 212311. Each control inclined block 212311 points in the same direction and is neither parallel nor perpendicular to the width direction of the suction nozzle channel 215. The control inclined blocks 212311 have a certain angle, and this angle is consistent with the angle of each movable inclined block 21211. The control inclined blocks 212311 pass through the suction nozzle control channel. The 2111 extends into the nozzle control cavity 2131 and is embedded in the opening and closing movable plate 2121. The width control plate 21231 slides within the nozzle control channel 2111 along a direction perpendicular to the length of the nozzle channel 215. The control inclined block 212311 presses the opening and closing movable plate 2121 along a direction perpendicular to the width of the nozzle channel 215, causing the opening and closing movable plate 2121 to move along the width of the nozzle channel 215. This structure ensures that the opening and closing movable plate 2121 with the movable inclined block 21211 slides synchronously at all points, ensuring that the opening and closing movable plate 2121 will not be tilted, and that the width of the nozzle channel 215 is consistent at all points, thus ensuring the quality of powder suction.

[0068] The width control power component is a width control gear 21232. The width control plate 21231 is provided with a width control rack segment. The width control gear 21232 is fixedly mounted on the side plate 211 of the powder suction nozzle and meshes with the width control rack segment. A width control rod 21233 is fixedly mounted on each of the width control gears 21232. When it is necessary to adjust the width of the suction nozzle channel 215, the width control rod 21233 is manipulated, the width control gear 21232 rotates, the width control rack segment moves accordingly, and the width control plate 21231 slides along the suction nozzle control channel 2111. Manipulating the width control rod 21233 is effortless and convenient.

[0069] In this embodiment, the lower suction paper device 3 includes a lower suction paper air box 31, a lower suction paper fan 32, and a lower suction recovery tower 33. The lower suction paper air box 31 is connected to the lower suction paper fan 32, and the lower suction recovery tower 33 is connected to the lower suction paper fan 32. The lower suction recovery tower 33 has a second powder spraying port 331 corresponding to the powder spraying device 5. The lower suction recovery tower 33 is connected to the secondary recovery second input port 72 of the secondary recovery tower 7. The lower suction paper air box 31 is used to suck the heat transfer paper passing through the upper side of the lower suction paper air box 31 onto the mesh belt 1. It can also suck up and recover the powder on the back of the heat transfer paper and the part of the mesh belt support section 11 that is not covered by the heat transfer paper.

[0070] In this embodiment, the lower suction air box 31 includes a lower suction air box body 311, a sealing plate operating rod 312, and a plurality of lower suction sealing devices 313 installed in the lower suction air box body 311. The lower suction air box body 311 includes a suction air inlet plate 3111, which serves as the second powder suction port 22 of the upper powder suction device 2. The suction air inlet plate 3111 is provided with a lower suction air inlet hole 31111. Each lower suction sealing device 313 includes a sealing plate assembly 3131 and a pair of lower suction sealing devices. The guide rail 3132 and the lower paper suction push assembly 3133 are arranged opposite to each other on the inner surface of the lower paper suction air box 31. The sealing plate assembly 3131 slides along the lower paper suction sealing guide rail 3132. Each lower paper suction push assembly 3133 is fixedly installed on the inner surface of the lower paper suction air box 31. The sealing plate operating rod 312 extends into the lower paper suction air box body 311 and is detachably and driveably connected to each lower paper suction push assembly 3133. The sealing plate assembly 3131 is driveably connected to the lower paper suction push assembly 3133.

[0071] The reason for this design is that, since the heat transfer paper is always fed into the mesh belt 1 in the same place, it is always in the same area of ​​the lower suction air box 31 when it passes through the lower suction air box 31. When no heat transfer paper passes through the upper side of a certain lower suction sealing device 313, the sealing plate operating rod 312 extends into the lower suction air box 31 and is connected to the corresponding lower suction pushing component 3133. When the sealing plate operating rod 312 rotates, the lower suction pushing component 3133 moves and pushes the sealing plate component 3131 to slide along the lower suction sealing guide rail 3132. When the sealing plate component 3131 is in the upper limit working position, it closes the suction air inlet plate 3111, so that the airflow is concentrated through the area where the heat transfer paper passes, increasing the suction force on the heat transfer paper. From another perspective, it reduces the fan power required to hold the heat transfer paper.

[0072] In this embodiment, the lower suction air box 31 further includes a lower suction upper inclined plate 3112, and both lower suction closed guide rails 3132 include a lower suction guide rail inclined section and a lower suction guide rail horizontal section. Both the lower suction guide rail inclined section and the lower suction guide rail horizontal section include a closed plate support plate 31321. The closed plate assembly 3131 includes a lower suction closed plate 31311 and a closed plate push rod 31312. The lower suction closed plate 31311 is provided with a plurality of closed plate guide posts 31311 that slide in cooperation with the closed plate support section. 1. The sealing plate guide post 313111 slides along the sealing plate support section of the lower paper suction guide rail. The sealing plate push rod 31312 is hinged to the lower paper suction sealing plate 31311 and is connected to the lower paper suction pushing assembly 3133. The sealing plate push rod 31312 pushes the lower paper suction sealing plate 31311. Under the guidance of the sealing plate support section, the sealing plate guide post 313111 gradually climbs from the inclined section of the lower paper suction guide rail to the horizontal section of the lower paper suction guide rail and seals the corresponding area of ​​the paper suction air inlet plate 3111.

[0073] In this embodiment, each lower paper suction pushing assembly 3133 includes two parallel pushing gear mounting plates 31331 fixedly mounted on the inner surface of the lower paper suction air box 31, and a lower paper suction pushing gear 32332 hinged to the pushing gear mounting plate 31331. The lower paper suction pushing gear 32332 is detachably and driveably connected to the closing plate operating rod 312, and the lower paper suction pushing gear 32332 is also drively connected to the closing plate assembly 3131. Each pushing gear mounting plate 31331 has an operating rod through hole 313311, through which the closing plate operating rod 312 passes and engages with the lower paper suction pushing gear. The 32332 detachable transmission connection includes an operating lever 312 with a gear section 3121 and a cylindrical section 3122. The diameter of the tooth root circle of the gear section 3121 is the same as the diameter of the cylindrical section 3122. The contour shape of the operating lever through hole 313311 is consistent with the contour shape of the gear section 3121, which facilitates the passage of the gear section 3121 through the operating lever through hole 313311. Since the diameter of the tooth root circle of the gear section 3121 is the same as the diameter of the cylindrical section 3122, the cylindrical section 3122 will not wobble when passing through the operating lever through hole 313311.

[0074] In this embodiment, the secondary recovery tower 7 includes, from bottom to top, a recovery tower discharge pipe, a conical shell 76, an outer shell 77, a sealing cover 78, a sliding inner cylinder 75, an inner cylinder lifting device, and three secondary recovery air inlet pipes 79. The sealing cover 78 has an inner cylinder mounting hole. The sliding inner cylinder 75 passes through the inner cylinder mounting hole and slides up and down along the inner cylinder mounting hole. A sealing ring is provided in the inner cylinder mounting hole to prevent air leakage between the inner cylinder mounting hole and the sliding inner cylinder 75. The recovery tower discharge pipe forms a third powder spraying port 74. The three secondary recovery... All the intake air pipes 79 are tangentially arranged on the outer shell 77. The three secondary recovery intake air pipes 79 respectively constitute the first secondary recovery inlet 71, the second secondary recovery inlet 72, and the third secondary recovery inlet 73. The inner cylinder lifting device is installed on the top surface of the sealed cover 78 and is connected to the sliding inner cylinder 75. The sliding inner cylinder 75 moves up and down under the drive of the inner cylinder lifting device. The height of the sliding inner cylinder 75 is adjusted according to the actual number of intake air pipes connected and the separation quality requirements to avoid the pressure drop caused by the secondary recovery tower 7 being too high, which would result in insufficient fan power.

[0075] Among them, a circulation gap 791 is formed between each secondary recovery air inlet pipe 79 and the sliding inner cylinder 75, so that the airflow entering the outer shell cylinder one after another can be superimposed, resulting in high dust separation efficiency.

[0076] In this embodiment, a finned drag-reducing core 751 is installed below the sliding inner cylinder 75. The finned drag-reducing core 751 comprises a drag-reducing core cylinder and two or more fins 7511 intersecting at the center line. The drag-reducing core cylinder is installed below the sliding inner cylinder 75, eliminating turbulence in the clean gas discharged from the sliding inner cylinder 75 and greatly reducing energy loss.

[0077] In this embodiment, an inner cylinder lifting ring 752 is fixedly mounted on the outer circumferential surface of the sliding inner cylinder 75, which strengthens the structural strength of the sliding inner cylinder 75. The inner cylinder lifting ring 752 is provided with an inner cylinder lifting ear 7521 symmetrical with respect to the axis of the sliding inner cylinder 75. A threaded hole 75211 is opened on the inner cylinder lifting ear 7521. The inner cylinder lifting device includes two lifting screws 753, two guide sprockets 754, a drive sprocket 755, and a chain 756 arranged axially vertically on the sealing cover 78. A screw sprocket is provided at the bottom of the lifting screw 753. The chain 756 is wound around the screw sprocket, the two guide sprockets 754, and the drive sprocket 755 in sequence. Both the drive sprocket 755 and the lifting screw 753 rotate on the sealed cover 78 with a vertical axis. The two lifting screws 753 rotate in the same direction. Preferably, the drive sprocket 755 is equipped with a lifting handle. Only by operating the lifting handle to rotate the drive sprocket 755, the lifting screw 753 is rotated through the drive sprocket 755. The guide sprocket is used to separate the chain 756 from the sliding inner cylinder 75 to avoid interference. Due to the transmission of the chain 756, the two lifting screws 753 can rotate synchronously. The two lifting screws 753 are threadedly connected to the corresponding inner cylinder lifting ears 7521, which can synchronously lift the sliding inner cylinder 75 and prevent the sliding inner cylinder 75 from being tilted and damaged.

[0078] In this embodiment, the mesh belt dust removal device 6 includes a third blower 61, a mesh belt dust removal box 62, and a dust removal brush device 63. The mesh belt dust removal box 62 has a dust removal port and is connected to the third blower 61. The dust removal port is located on the lower side of the mesh belt recovery section 12. The third blower 61 is connected to the secondary recovery third input port 73 of the secondary recovery tower 7. The dust removal brush device 63 is located on the upper side of the mesh belt recovery section 12 and rubs against the mesh belt recovery section 12. The dust removal brush device 63 is located on the upper side of the collection hopper 4. The dust removal brush device 63 includes several dust removal brush components 631 that can be reversed. After the dust removal brush components 631 have been used for a period of time, the direction of the brush will inevitably deviate to one side with the movement direction of the mesh belt 1. Reversing the direction can correct the tilt of the dust removal brush components 631 and prevent the dust removal brush components 631 from failing.

[0079] In this embodiment, the brush sweeping device 63 further includes a brush sweeping guide rail, which includes a first annular transition area 6321 and a second annular transition area 6322. The brush sweeping assembly 631 includes a brush limiting section 6311, a brush guiding section 6312, and a brush section 6313. The brush sweeping guide rail has a guide rail guide groove 6323 and a guide rail limiting cavity 6324. The brush guiding section 6312 slides along the guide groove 6323 and follows the direction of the guide groove 6323, so that the brush sweeping assembly 631 is always oriented and will not rotate freely. The brush limiting section 6311 is located in the guide rail limiting cavity 6324 and the diameter of the brush guiding section 6312 is larger than the width of the guide rail guide groove 6323, to prevent the brush sweeping assembly 631 from coming out.

[0080] In this embodiment, the powder-sweeping device 63 further includes a powder-sweeping sprocket 633. The powder-sweeping guide rail includes a guide rail body 635 and a sealing arc rail 634. The guide rail body 635 includes a first annular transition area 6321. The guide rail body 635 and the sealing arc rail 634 are fixedly mounted and form a second annular transition area 6322. The axis of the powder-sweeping sprocket 633 is located at the axis of the sealing arc rail 634. A powder-sweeping power wrench 6331 is installed on the powder-sweeping sprocket 633. A sprocket clearance groove 6351 is provided at one end of the guide rail body 635 near the second annular transition area 6322. The sealing arc rail 634 is provided with... The arc-shaped rail opening 6341 allows the dust-sweeping sprocket 633 to rotate within the sprocket clearance groove 6351 and the arc-shaped rail opening 6341. The brush guide section 6312 is cylindrical. When the dust-sweeping brush power wrench 6331 rotates, it drives the dust-sweeping sprocket 633 to rotate. The brush guide section 6312 cooperates with the dust-sweeping sprocket 633 and is carried by the dust-sweeping sprocket 633 to slide along the arc-shaped rail. Each dust-sweeping brush assembly 631 is slid along the guide rail body 635 under the drive of the dust-sweeping sprocket 633 and is transported to the first circular transition area 6321, and then returns from the first circular transition area 6321, realizing the directional reversal of the dust-sweeping brush assembly 631.

[0081] In this embodiment, an elastic fastener 636 is installed on the brush guide rail. The elastic fastener 636 is used to elastically pull the brush assembly 631 to eliminate the gap between the brush assemblies 631. The elastic fastener 636 is preferably an elastic rubber band.

[0082] In this embodiment, the powder spraying device 5 includes a photosensitive switch, a powder spraying hopper, and a powder spraying roller assembly. The bottom of the powder spraying hopper is provided with a main powder spraying port 51. When the photosensitive switch senses the paper, it instructs the powder spraying roller assembly to rotate and spray powder through the main powder spraying port 51. When the photosensitive switch does not sense the paper, it instructs the powder spraying roller assembly to stop rotating, so that the main powder spraying port 51 stops spraying powder, thereby saving energy and reducing equipment wear.

[0083] In this embodiment, the powder spraying roller assembly includes two powder spraying rollers facing each other, forming a powder spraying channel between the two rollers. The powder spraying channel is located below the main powder spraying port 51, and the powder descent speed is controlled by the rotation of the powder spraying rollers.

[0084] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. Hot melt glue duster, characterized by: The device comprises a mesh belt, an upper powder suction device, a lower paper suction device, a collecting hopper, a powder spraying device, a mesh belt powder removing device and a secondary recovery tower, the powder spraying device is located on the upper side of the mesh belt supporting section above the collecting hopper and has a main powder spraying port, the first powder suction port of the upper powder suction device is located on the upper side of the mesh belt supporting section and the second powder suction port is connected to the bottom of the collecting hopper, the first powder suction port and the second powder suction port are connected by an upper powder suction pipe A, the air outlet of the upper powder suction device is connected to the first input port of the secondary recovery tower, the paper suction port of the lower paper suction device is located on the lower side of the mesh belt supporting section and the discharge port is connected to the second input port of the secondary recovery tower, the upper powder suction device and the lower paper suction device are both connected to the powder spraying device, the mesh belt powder removing device is connected to the third input port of the secondary recovery tower and the powder removing port of the mesh belt powder removing device is located on the lower side of the mesh belt recovery section, the secondary recovery tower has a third powder spraying port which is connected to the upper powder suction pipe A, the upper powder suction device comprises an upper powder suction nozzle, an upper recovery tower and an upper suction fan, the upper powder suction nozzle is the first powder suction port and is connected to the upper suction fan, the upper recovery tower is connected to the upper suction fan, the upper recovery tower has a first powder spraying port corresponding to the powder spraying device, the air outlet of the upper recovery tower is connected to the first input port of the secondary recovery tower, the bottom of the upper recovery tower is provided with a lower powder switch corresponding to the powder spraying device, the lower powder switch comprises a switch cylinder body installed on the bottom of the upper recovery tower and a switch passage selection device, the switch cylinder body is provided with a switch powder inlet port connected to the upper recovery tower, two switch powder outlet ports, the switch powder inlet port and each switch powder outlet port are in communication with the switch passage selection device, the switch passage selection device slides along the axial direction of the switch cylinder body, each switch powder inlet port and switch powder outlet port are not in communication during the whole sliding process of the switch passage selection device along the switch cylinder body, each switch powder outlet port constitutes the first powder spraying port, the upper powder suction nozzle comprises two powder suction nozzle side plates, a powder suction opening and closing device, a first powder suction plate and a second powder suction plate, the first powder suction plate and the second powder suction plate are oppositely fixed between the two powder suction nozzle side plates, a suction nozzle passage is formed between the first powder suction plate and the second powder suction plate, the first powder suction plate is provided with a suction nozzle control cavity at the suction nozzle passage, a suction nozzle control passage in communication with the suction nozzle control cavity is formed in each powder suction nozzle side plate, the powder suction opening and closing device comprises an opening and closing movable plate and an opening and closing control mechanism, the opening and closing movable plate is installed in the suction nozzle control cavity and the two ends of the opening and closing movable plate are in sliding friction with the corresponding powder suction nozzle side plate, the opening and closing control mechanism passes through the suction nozzle control passage and extends into the suction nozzle control cavity and is in transmission connection with the opening and closing movable plate, the opening and closing movable plate slides in the suction nozzle control cavity along the width direction of the suction nozzle passage under the transmission of the opening and closing control mechanism.

2. The hot melt applicator of claim 1, wherein: The lower paper suction device comprises a lower paper suction fan, a lower paper suction fan box and a lower recovery tower, the lower paper suction fan box is connected to the lower paper suction fan, the lower recovery tower is connected to the lower paper suction fan, the lower recovery tower has a second powder spraying port corresponding to the powder spraying device, the lower recovery tower is connected to the second input port of the secondary recovery tower.

3. The hot melt applicator of claim 2, wherein: The lower suction paper wind box comprises a lower suction paper wind box body, a closing plate operating rod and a plurality of lower suction paper closing devices installed in the lower suction paper wind box body, the lower suction paper wind box body comprises a paper suction inlet plate, each of the lower suction paper closing devices comprises a closing plate assembly, a pair of lower suction paper closing guide rails oppositely arranged on the inner surface of the lower suction paper wind box and a lower suction paper pushing assembly fixed on the inner surface of the lower suction paper wind box, the closing plate operating rod extends into the lower suction paper wind box body and is detachably drivingly connected with each of the lower suction paper pushing assemblies, the closing plate assembly is drivingly connected with the lower suction paper pushing assembly, and the closing plate assembly closes the paper suction inlet plate when being in an upper limit working position.

4. The hot melt applicator of claim 1, wherein: The net belt powder removing device comprises a third fan, a net belt powder removing box and a powder sweeping brush device, the net belt powder removing box is provided with a powder removing port and is connected with the third fan, the powder removing port is located at the lower side of the net belt recycling section, the third fan is connected with the secondary recycling third input port of the secondary recycling tower, the powder sweeping brush device is located at the upper side of the net belt recycling section and is in friction with the net belt recycling section, the powder sweeping brush device is located at the upper side of the material collecting hopper, and the powder sweeping brush device comprises a plurality of powder sweeping brush assemblies capable of adjusting the direction.

5. The hot melt applicator of claim 1, wherein: The secondary recycling tower comprises, from bottom to top, a recycling tower discharge pipe, a conical shell, an outer shell, a sealing upper cover, a sliding inner shell, an inner shell lifting device and three secondary recycling air inlet pipes, the sealing upper cover is provided with an inner shell mounting hole, the sliding inner shell passes through the inner shell mounting hole and slides up and down along the inner shell mounting hole, the recycling tower discharge pipe constitutes a third powder spraying port, the three secondary recycling air inlet pipes are tangentially arranged on the outer shell, the three secondary recycling air inlet pipes respectively constitute a secondary recycling first input port, a secondary recycling second input port and a secondary recycling third input port, and the inner shell lifting device is installed on the top surface of the sealing upper cover and drivingly connected with the sliding inner shell.

6. The hot melt applicator of claim 1, wherein: The powder spraying device comprises a light control induction switch, a powder spraying hopper and a powder spraying roller group, the bottom of the powder spraying hopper is provided with a main powder spraying port, the light control induction switch senses paper and instructs the powder spraying roller group to rotate to spray powder through the main powder spraying port, and the light control induction switch senses no paper and instructs the powder spraying roller group to stop rotating so that the main powder spraying port does not spray powder.

7. The hot melt applicator of claim 6, wherein: The powder spraying roller group comprises two powder spraying rollers facing each other, and a powder spraying channel is formed between the two powder spraying rollers, and the powder spraying channel is located at the lower side of the main powder spraying port.

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