Auger for reducing melting losses of powders

Abstract

The utility model relates to a kind of reduce the loss of powder melting's lifting auger;The lifting auger includes upper turnover bin, lower turnover bin and auger assembly;Auger rod circumferential side surface is welded with the brush tuft clamping strip of helical arrangement;Brush tuft clamping strip densely clamped with elastic brush tuft;Brush tuft free end is in abutment with the wall of feeding pipe.The utility model replaces rigid helical blade with helical densely brush tuft, and hot melt adhesive powder is lifted;But the heat generated by the friction of brush tuft and the wall of feeding pipe is less, can effectively reduce the phenomenon that hot melt adhesive powder melts and adheres to the wall of feeding pipe, both can reduce the loss of hot melt adhesive powder, and guarantee auger rod stable work.

Description

Technical Field

[0001] This utility model relates to the technical field of powder shaking machines, and in particular to a lifting auger that reduces powder melting loss. Background Technology

[0002] A powder-dispensing machine is a device that evenly distributes hot melt adhesive powder onto an inkjet-printed pattern, removes excess powder, and finally dries and cures it. Generally, a powder-dispensing machine includes a powder-spreading system, a powder-dispensing system, a drying system, an automatic powder return system, and a conveying system. The conveying system carries the PET film containing the inkjet-printed pattern, passing it through the powder-spreading system, the powder-dispensing system, and the drying system in sequence. The powder-spreading system evenly distributes the hot melt adhesive powder onto the PET film; the powder-dispensing system shakes off excess powder; and the drying system cures the evenly distributed powder onto the PET film. The automatic powder return system connects to both the powder-dispensing system and the powder-spreading system, allowing for the recycling of the hot melt adhesive powder. Referring to Chinese patent application number 2023116028631, regarding preventing wet powder from clogging the feed inlet, the vertical auger of the automatic powder return system typically features rigid spiral blades and a rigid vertical sleeve. During the vertical auger lifting of hot melt adhesive powder, the friction between the spiral blades and the vertical sleeve generates a large amount of heat, which easily causes the hot melt adhesive powder to melt and adhere to the inner wall of the vertical sleeve. This hot melt adhesive powder adhering to the inner wall of the vertical sleeve cannot be recycled, resulting in material waste. Furthermore, it causes vertical vibration during auger operation and creates gaps between the spiral blades and the vertical sleeve, reducing the conveying efficiency of the vertical auger and increasing the probability of damage. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a lifting auger that reduces powder melting loss.

[0004] The technical solution of this utility model is as follows: A lifting auger for reducing powder melting loss includes an upper transfer chamber, a lower transfer chamber, and an auger assembly; the lower transfer chamber is used to hold hot melt adhesive powder shaken off from the powder shaking system; the upper transfer chamber is used to hold hot melt adhesive powder that will enter the powder spreading system; the auger assembly includes a vertical feeding pipe, an auger rod, and a power mechanism; the lower end of the feeding pipe passes through the top of the lower transfer chamber and is fixedly connected to the bottom of the lower transfer chamber; the upper end of the feeding pipe passes through the bottom of the upper transfer chamber and is connected to the top of the upper transfer chamber; the feeding pipe connects to the hot melt adhesive powder, providing a lifting channel for the hot melt adhesive powder; the auger rod is vertically inserted into the feeding pipe, and its end is rotatably connected to the top of the upper transfer chamber and the bottom of the lower transfer chamber; the rotating auger rod... The system drives the hot melt adhesive powder to rise vertically. A drive mechanism is installed at the upper end of the feeding pipe and connected to the auger rod. The drive mechanism provides power for the rotation of the auger rod. Spiral-arranged brush cluster clamping strips are welded and fixed to the circumference of the auger rod. The brush cluster clamping strips densely clamp elastic brush clusters. The brush cluster clamping strips tighten the roots of the brush clusters. The free ends of the brush clusters abut against the wall of the feeding pipe. The densely distributed brush clusters along the brush cluster clamping strips replace the rigid spiral blades, lifting the hot melt adhesive powder. However, the friction between the brush clusters and the wall of the feeding pipe generates less heat, effectively reducing the phenomenon of hot melt adhesive powder melting and adhering to the wall of the feeding pipe. This reduces the loss of hot melt adhesive powder and ensures stable operation of the auger rod.

[0005] Preferably, the brush cluster clamping strip is provided with a clamping groove for clamping the brush cluster; the opening of the clamping groove is provided with an inwardly extending clamping block to ensure the effect of clamping the root of the brush cluster.

[0006] Furthermore, the upper end of the clamping groove is closed, while the lower end is open; the brush cluster can be inserted from the lower end of the clamping groove and screwed onto the upper end of the clamping groove along the clamping groove, thus realizing the detachable connection of the brush cluster for easy replacement of the brush cluster.

[0007] Preferably, several scrapers extend radially outward from the upper end of the auger rod; the auger rod drives the scrapers to rotate; the rotating scrapers act on the hot melt adhesive powder lifted to the transfer bin, causing the hot melt adhesive powder to generate centrifugal force, thereby throwing it into the powder spreading system; the several scrapers are distributed around the circumference of the auger rod axis.

[0008] Furthermore, a scraper is aligned with the upper end of the brush cluster clamp; the hot melt adhesive powder lifted along the densely arranged brush cluster is blocked by the scraper and is more easily flung into the powder spreading system by the scraper.

[0009] Furthermore, a blocking disc concentric with the auger rod is fixed to the upper end of the auger rod; the blocking disc is connected to the upper end of the scraper; the blocking disc blocks the hot melt adhesive powder to prevent the hot melt adhesive powder from being lifted excessively, and also connects all the scrapers into one, improving the connection strength between the scraper and the auger rod.

[0010] Preferably, the lower end of the auger rod has rigid spiral blades arranged in a spiral pattern; the spiral blades have the same spiral direction as the brush cluster clamping strips; the upper end of the spiral blades partially overlaps with the lower end of the brush cluster clamping strips and abuts against the upper edge of the brush cluster clamping strips; the lower end of the spiral blades extends beyond the lower end of the brush cluster clamping strips; the spiral blades guide the hot melt adhesive powder, allowing the hot melt adhesive powder to be smoothly lifted along the densely distributed brush clusters, and also cooperate with the bottom of the next turnover bin to vertically limit the auger rod, ensuring the stable operation of the auger rod.

[0011] Furthermore, the side of the spiral blade does not extend beyond the free end of the brush cluster to prevent the spiral blade from generating heat through friction with the wall of the feeding tube, causing the hot melt adhesive powder to adhere to the wall of the feeding tube.

[0012] Furthermore, a feed inlet is provided at the lower end of the feeding pipe; the lower end of the feed inlet is flush with the lower end of the spiral blade. After the hot melt adhesive powder in the next turnover bin enters the feed inlet, it can smoothly enter above the spiral blade and then be lifted along the brush cluster.

[0013] Preferably, the drive mechanism includes a motor base plate, a drive motor, a drive pulley, a driven pulley, and a transmission belt; the drive motor is mounted on one end of the motor base plate; the other end of the motor base plate is mounted on the upper end of the feeding pipe; the drive pulley is coaxially fixed to the output shaft of the drive motor; the driven pulley is coaxially fixed to the upper end of the auger rod; one end of the transmission belt engages with the drive pulley, and the other end engages with the driven pulley; the drive motor outputs torque, which drives the auger rod to rotate through the drive pulley, transmission belt, and driven pulley.

[0014] Furthermore, the improved auger for reducing powder melting loss also includes motor mounting screws; the motor base plate has a large oblong hole and a small oblong hole arranged in the same direction; the output end of the drive motor passes through the large oblong hole; the motor mounting screw passes through the small hole and is threadedly connected to the drive motor; the distance between the drive pulley and the driven pulley can be adjusted to adjust the tension of the transmission belt to ensure that the drive motor stably transmits torque.

[0015] The beneficial effects of this utility model are as follows: The lifting auger of this utility model, which reduces powder melting loss, has the following advantages: (1) The spiral densely packed brush clusters of this utility model replace the rigid spiral blades to lift the hot melt adhesive powder; however, the heat generated by the friction between the brush clusters and the wall of the feeding pipe is less, which can effectively reduce the phenomenon of hot melt adhesive powder melting and adhering to the wall of the feeding pipe, thus reducing the loss of hot melt adhesive powder and ensuring the stable operation of the auger rod. (2) The scraper of this utility model acts on the hot melt adhesive powder that is lifted to the transfer bin, so that the hot melt adhesive powder generates centrifugal force and is thrown into the powder spreading system; several scrapers are distributed around the circumference of the auger shaft axis; (3) The spiral blade of this utility model guides the hot melt adhesive powder, so that the hot melt adhesive powder is smoothly lifted along the densely distributed brush clusters, and cooperates with the bottom of the next turnover bin to vertically limit the auger rod, ensuring the stable operation of the auger rod. Attached Figure Description

[0016] Figure 1 This is a partial sectional view of the front view of the lifting auger for reducing powder melting loss according to this utility model; Figure 2 yes Figure 1 A magnified view of the I-shaped image; Figure 3 yes Figure 1 II magnified view; Figure 4 yes Figure 1 AA section view; Figure 5 yes Figure 4 III magnified view; Figure 6 yes Figure 4 BB cross-sectional view; Figure 7 yes Figure 6 IV magnified view; Figure 8 yes Figure 6 A magnified view of the V-shape; Figure 9 This is a perspective view of the lifting auger for reducing powder melting loss according to this utility model; Figure 10 It is a 3D diagram of the auger rod; In the diagram: 1. Last week's transfer warehouse, 2. Next week's transfer warehouse, 31. Feeding pipe, 311. Feed inlet, 32. Screw rod, 321. Brush cluster clamping strip, 3211. Clamping groove, 3212. Clamping block, 322. Brush cluster, 323. Scraper, 324. Blocking disc, 325. Spiral blade, 331. Motor base plate, 3311. Large oblong hole, 3312. Small oblong hole, 332. Drive motor, 333. Drive pulley, 334. Driven pulley, 335. Transmission belt, 4. Motor mounting screws. Detailed Implementation

[0017] Example 1: See Figure 1-10A lifting auger for reducing powder melting loss includes an upper transfer chamber 1, a lower transfer chamber 2, and an auger assembly. The lower transfer chamber 2 is used to contain hot melt adhesive powder shaken off from the powder dispersing system. The upper transfer chamber 1 is used to contain hot melt adhesive powder that will enter the powder spreading system. The auger assembly includes a vertical feed pipe 31, an auger rod 32, and a power mechanism. The lower end of the feed pipe 31 passes through the top of the lower transfer chamber 2 and is fixedly connected to the bottom of the lower transfer chamber 2. The upper end of the feed pipe 31 passes through the bottom of the upper transfer chamber 1 and is connected to the top of the upper transfer chamber 1. The feed pipe 31 communicates with the hot melt adhesive powder, providing a lifting channel for the hot melt adhesive powder. The auger rod 32 is vertically inserted into the feed pipe 31, and its end is rotatably connected to the top of the upper transfer chamber 1 and the bottom of the lower transfer chamber 2. The rotating auger rod 32 drives the hot melt adhesive powder to be vertically lifted. The mechanism is installed at the upper end of the feeding pipe 31 and is driven by the auger rod 32. The driving mechanism provides power for the rotation of the auger rod 32. Spiral brush cluster clamping strips 321 are welded and fixed to the circumferential side of the auger rod 32. Elastic brush clusters 322 are densely clamped in the brush cluster clamping strips 321. The brush cluster clamping strips 321 clamp the root of the brush clusters 322. The free end of the brush clusters 322 abuts against the wall of the feeding pipe 31. The brush clusters 322 densely distributed along the brush cluster clamping strips 321 replace the rigid spiral blades to lift the hot melt adhesive powder. However, the heat generated by the friction between the brush clusters 322 and the wall of the feeding pipe 31 is less, which can effectively reduce the phenomenon of hot melt adhesive powder melting and adhering to the wall of the feeding pipe 31. This can reduce the loss of hot melt adhesive powder and ensure the stable operation of the auger rod 32.

[0018] Compared with the prior art, the present invention uses a densely packed spiral brush cluster 322 to replace the rigid spiral blades to lift the hot melt adhesive powder; however, the brush cluster 322 generates less heat from friction with the wall of the feeding pipe 31, which can effectively reduce the phenomenon of hot melt adhesive powder melting and adhering to the wall of the feeding pipe 31, thereby reducing the loss of hot melt adhesive powder and ensuring the stable operation of the auger rod 32.

[0019] The brush cluster clamping bar 321 is provided with a clamping groove 3211 for clamping the brush cluster 322; the opening of the clamping groove 3211 is provided with an inwardly extending clamping block 3212 to ensure the effect of clamping the root of the brush cluster 322.

[0020] The clamping groove 3211 is closed at the top and open at the bottom; the brush cluster 322 can be inserted from the bottom of the clamping groove 3211 and screwed onto the top of the clamping groove 3211, so as to realize the detachable connection of the brush cluster 322 and facilitate the replacement of the brush cluster 322.

[0021] Several scrapers 323 extend radially outward from the upper end of the auger rod 32; the auger rod 32 drives the scrapers 323 to rotate; the rotating scrapers 323 act on the hot melt adhesive powder lifted to the transfer bin 1, causing the hot melt adhesive powder to generate centrifugal force, thereby throwing it into the powder spreading system; the scrapers 323 are distributed circumferentially along the axis of the auger rod 32. In this embodiment, there are 3 scrapers 323.

[0022] A scraper 323 is aligned with the upper end of the brush cluster clamp 321; the hot melt adhesive powder lifted by the densely arranged brush cluster 322 is blocked by the scraper 323 and is more easily flung into the powder spreading system by the scraper 323.

[0023] A blocking disc 324, concentric with the auger rod 32, is fixed to the upper end of the auger rod 32. The blocking disc 324 is connected to the upper end of the scraper 323. The blocking disc 324 blocks the hot melt adhesive powder to prevent the hot melt adhesive powder from being lifted excessively. It also connects all the scrapers 323 into one piece, improving the connection strength between the scraper 323 and the auger rod 32.

[0024] The lower end of the auger rod 32 has rigid spiral blades 325 arranged in a spiral pattern; the spiral blades 325 have the same spiral direction as the brush cluster clamping strip 321; the upper end of the spiral blades 325 partially overlaps with the lower end of the brush cluster clamping strip 321 and abuts against the upper edge of the brush cluster clamping strip 321; the lower end of the spiral blades 325 extends beyond the lower end of the brush cluster clamping strip 321; the spiral blades 325 guide the hot melt adhesive powder, so that the hot melt adhesive powder is smoothly lifted along the densely distributed brush clusters 322, and cooperates with the bottom of the lower turnover bin 2 to vertically limit the auger rod 32, ensuring the stable operation of the auger rod 32.

[0025] The side of the spiral blade 325 does not extend beyond the free end of the brush cluster 322 to prevent the spiral blade 325 from generating heat through friction with the wall of the feeding tube 31, causing the hot melt adhesive powder to adhere to the wall of the feeding tube 31.

[0026] The lower end of the feeding pipe 31 is provided with a feed inlet 311; the lower end of the feed inlet 311 is flush with the lower end of the spiral blade 325. After the hot melt adhesive powder in the next turnover bin 2 enters the feed inlet 311, it can smoothly enter above the spiral blade 325 and then be lifted along the brush cluster 322.

[0027] The drive mechanism includes a motor base plate 331, a drive motor 332, a drive pulley 333, a driven pulley 334, and a transmission belt 335. The drive motor 332 is mounted on one end of the motor base plate 331. The other end of the motor base plate 331 is mounted on the upper end of the feed pipe 31. The drive pulley 333 is coaxially fixed to the output shaft of the drive motor 332. The driven pulley 334 is coaxially fixed to the upper end of the auger rod 32. One end of the transmission belt 335 is engaged with the drive pulley 333, and the other end is engaged with the driven pulley 334. The drive motor 332 outputs torque, which drives the auger rod 32 to rotate through the drive pulley 333, the transmission belt 335, and the driven pulley 334.

[0028] The working principle of this embodiment is as follows: the next transfer chamber 2 is used to hold the hot melt adhesive powder shaken off from the powder shaking system; the previous transfer chamber 1 is used to hold the hot melt adhesive powder that will enter the powder spreading system; the feeding pipe 31 connects to the hot melt adhesive powder, providing a lifting channel for the hot melt adhesive powder; the rotating auger rod 32 drives the hot melt adhesive powder to be lifted vertically; the drive mechanism provides power for the rotation of the auger rod 32; the brush cluster clamping strip 321 clamps the root of the brush cluster 322; the free end of the brush cluster 322 abuts against the wall of the feeding pipe 31; the densely distributed brush clusters 322 along the brush cluster clamping strip 321 replace the rigid spiral blades to lift the hot melt adhesive powder; however, the heat generated by the friction between the brush clusters 322 and the wall of the feeding pipe 31 is less, which can effectively reduce the phenomenon of hot melt adhesive powder melting and adhering to the wall of the feeding pipe 31, thus reducing the loss of hot melt adhesive powder and ensuring the stable operation of the auger rod 32. The auger rod 32 drives the scraper 323 to rotate. The rotating scraper 323 acts on the hot melt adhesive powder lifted to the next transfer chamber 1, causing the hot melt adhesive powder to generate centrifugal force and thus be thrown into the powder spreading system. The hot melt adhesive powder lifted along the densely arranged brush clusters 322 is blocked by the scraper 323, making it easier for the scraper 323 to throw it into the powder spreading system. The blocking disc 324 blocks the hot melt adhesive powder, preventing the hot melt adhesive powder from being lifted excessively, and also connects all the scrapers 323 into one, improving the connection strength between the scraper 323 and the auger rod 32. The spiral blade 325 guides the hot melt adhesive powder, allowing it to be smoothly lifted along the densely arranged brush clusters 322, and also cooperates with the bottom of the next transfer chamber 2 to vertically limit the auger rod 32, ensuring the stable operation of the auger rod 32.

[0029] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the lifting auger to reduce powder melting loss also includes motor mounting screws 4; the motor base plate 331 is provided with a large oblong hole 3311 and a small oblong hole 3312 arranged in the same direction; the output end of the drive motor 332 passes through the large oblong hole 3311; the motor mounting screws 4 pass through the small hole and are threadedly connected to the drive motor 332; the distance between the driving pulley 333 and the driven pulley 334 can be adjusted to adjust the tension of the transmission belt 335 to ensure that the drive motor 332 stably transmits torque.

Claims

1. A lifting auger for reducing powder melting loss, comprising an upper transfer hopper, a lower transfer hopper, and an auger assembly; the auger assembly includes a vertical feeding pipe, an auger rod, and a power mechanism; the lower end of the feeding pipe penetrates through the top of the lower transfer hopper and is fixedly connected to the bottom of the lower transfer hopper; the upper end of the feeding pipe penetrates through the bottom of the upper transfer hopper and is connected to the top of the upper transfer hopper; the auger rod is vertically inserted into the feeding pipe, and its end is rotatably connected to the top of the upper transfer hopper and the bottom of the lower transfer hopper; the drive mechanism is installed at the upper end of the feeding pipe and is driven by the auger rod; characterized in that, Spiral brush cluster clamping strips are welded and fixed to the circumference of the auger rod; the brush cluster clamping strips densely clamp elastic brush clusters; the free end of the brush clusters abuts against the wall of the feed pipe.

2. The lifting auger for reducing powder melting loss according to claim 1, characterized in that: The brush cluster clamping bar is provided with a clamping groove for clamping the brush cluster; the opening of the clamping groove is provided with an inwardly extending clamping block.

3. The lifting auger for reducing powder melting loss according to claim 2, characterized in that: The clamping groove is closed at the top and open at the bottom.

4. The lifting auger for reducing powder melting loss according to claim 1, characterized in that: Several scrapers extend radially outward from the upper end of the auger rod; the scrapers are distributed circumferentially along the axis of the auger rod.

5. The lifting auger for reducing powder melting loss according to claim 4, characterized in that: A scraper is aligned with the upper end of the brush cluster clamp.

6. The lifting auger for reducing powder melting loss according to claim 4, characterized in that: A blocking disc, concentric with the auger rod, is fixed to the upper end of the auger rod; the blocking disc is connected to the upper end of the scraper.

7. The lifting auger for reducing powder melting loss according to claim 1, characterized in that: The lower end of the auger rod has rigid spiral blades arranged in a spiral pattern; the spiral blades have the same spiral direction as the brush cluster clamping strip; the upper end of the spiral blades partially overlaps with the lower end of the brush cluster clamping strip and abuts against the upper edge of the brush cluster clamping strip; the lower end of the spiral blades extends beyond the lower end of the brush cluster clamping strip.

8. The lifting auger for reducing powder melting loss according to claim 7, characterized in that: The side of the spiral blade does not extend beyond the free end of the brush cluster.

9. The lifting auger for reducing powder melting loss according to claim 1, characterized in that: The drive mechanism includes a motor base plate, a drive motor, a drive pulley, a driven pulley, and a transmission belt; the drive motor is mounted on one end of the motor base plate; the other end of the motor base plate is mounted on the upper end of the feeding pipe; the drive pulley is coaxially fixed to the output shaft of the drive motor; the driven pulley is coaxially fixed to the upper end of the auger rod; one end of the transmission belt is engaged with the drive pulley, and the other end is engaged with the driven pulley.

10. The lifting auger for reducing powder melting loss according to claim 9, characterized in that: It also includes motor mounting screws; the motor base plate has a large oblong hole and a small oblong hole arranged in the same direction; the output end of the drive motor passes through the large oblong hole; the motor mounting screw passes through the small hole and is threaded to the drive motor.

Images