An automatic cyclic powder spraying device

Abstract

The present invention discloses an automatic cyclic powder sprinkling device, which includes a frame. On the frame, there are a powder sprinkling mechanism for sprinkling hot melt powder on a heat transfer substrate, a powder receiving box for collecting excess hot melt powder, and a recycling mechanism for recycling the hot melt powder in the powder receiving box to the powder sprinkling mechanism. By setting up the recycling mechanism, the present invention can automatically recycle the excess hot melt powder in the powder receiving box to the powder sprinkling mechanism, realizing an automatic cyclic process in which the hot melt powder is sprinkled from the powder sprinkling mechanism, the excess hot melt powder is concentrated in the powder receiving box, and the excess hot melt powder returns to the powder sprinkling mechanism through the recycling mechanism, so as to ensure that there is enough hot melt powder in the powder sprinkling mechanism, well avoid the situation of powder shortage during powder sprinkling, without the need for manual attendance to add hot melt powder, with high automation degree, high production efficiency, greatly reducing production costs, strong practicability, and great market competitiveness.

Description

[Technical field]

[0001] The invention relates to automatic circulating powder spreading equipment. [Background Technology]

[0002] Thermal transfer is also called heat transfer. Thermal transfer is generally done by first printing the pattern on a substrate such as a thermal transfer film, then sprinkling hot melt powder on the thermal transfer film, then cleaning the excess powder, and then hot melting and solidifying the hot melt powder on the thermal transfer film with the pattern, thereby obtaining a thermal transfer film with a pattern, and finally transferring the pattern to the fabric by heat pressing. Thermal transfer has the advantages of bright colors, rich layers, low production cost, and not easy to fade, so it has a broad market application scenario.

[0003] In the process of spreading hot melt powder, the current conventional operation is to load enough hot melt powder on the powder spreading plate, and then intermittently shake the powder spreading plate so that the powder spreading plate can sprinkle enough hot melt powder according to the speed of thermal transfer. However, this conventional operation has the following defects: during thermal transfer, the operator needs to be on duty beside the equipment in real time. When the powder spreading plate is almost out of hot melt powder, the excess hot melt powder in the powder receiving box below needs to be put back into the powder spreading plate to avoid powder shortage and affect the entire production process. In addition, manual operation is prone to errors and the degree of automation is low, resulting in high production costs and low production efficiency.

[0004] The present invention is produced based on the above problems. [Summary of the invention]

[0005] The purpose of the present invention is to propose an automatic circulating powder sprinkling equipment in view of the deficiencies in the prior art. The present invention has a simple structure and can automatically recycle excess hot-melt powder during the thermal transfer process to realize the production process of circulating powder sprinkling. There is no need for manual equipment to add hot-melt powder. It has a high degree of automation and high production efficiency, greatly reduces production costs, has strong practicality, and is highly competitive in the market.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An automatic circulating powder spreading device comprises a frame, wherein the frame is provided with a powder spreading mechanism for spreading hot melt powder on a thermal transfer substrate, a powder receiving box for collecting excess hot melt powder, and a recovery mechanism for recovering the hot melt powder in the powder receiving box to the powder spreading mechanism.

[0008] In the automatic circulating powder spreading equipment as described above, the powder receiving box is provided with a second conveying mechanism for conveying the hot melt powder in the box to the entrance of the recovery mechanism.

[0009] An automatic cyclic powder sprinkling device as described above, wherein the powder sprinkling mechanism includes a powder sprinkling tray located above the powder receiving box and used for loading hot melt powder. The bottom of the powder sprinkling tray is provided with a bottom opening, and the bottom opening is connected with a screen for filtering and screening the hot melt powder. The powder sprinkling mechanism further includes a vibration device for intermittently vibrating the powder sprinkling tray so that the hot melt powder on the powder sprinkling tray falls from the bottom opening.

[0010] An automatic cyclic powder sprinkling device as described above, wherein a third conveying mechanism for conveying and covering the hot melt powder at the outlet of the recycling mechanism to the bottom opening is provided on the powder sprinkling tray.

[0011] An automatic cyclic powder sprinkling device as described above, wherein a side opening is provided on one side of the powder sprinkling tray away from the outlet of the recycling mechanism. The third conveying mechanism includes a third screw rod rotatably connected to the powder sprinkling tray and a third driving mechanism for driving the third screw rod to rotate. When the third screw rod rotates, it conveys and covers the hot melt powder at the outlet of the recycling mechanism to the bottom opening and pushes the excess hot melt powder out of the powder sprinkling tray from the side opening.

[0012] An automatic cyclic powder sprinkling device as described above, wherein a cross beam is provided on the frame. The vibration device includes a plurality of vibrators connected to the cross beam, and the vibrators abut against the powder sprinkling tray to drive the powder sprinkling tray to vibrate intermittently.

[0013] An automatic cyclic powder sprinkling device as described above, wherein the recycling mechanism includes a powder inlet box communicated with the powder receiving box, a powder outlet box communicated with the powder sprinkling tray, and a conveying pipe connecting the powder inlet box and the powder outlet box. A first screw rod for conveying the hot melt powder in the powder inlet box to the powder outlet box is provided in the conveying pipe, and a first driving mechanism for driving the first screw rod to rotate is provided on the frame.

[0014] An automatic cyclic powder sprinkling device as described above, wherein the top of the powder inlet box is open and communicated with the powder receiving box. The powder inlet box includes a drawer that can be pulled out or inserted relative to the frame, and a transparent window for observing the capacity of the hot melt powder in the powder inlet box is provided on the outer side wall of the drawer.

[0015] An automatic cyclic powder sprinkling device as described above, wherein a first opening communicated with the powder sprinkling tray is provided on one side wall of the powder outlet box, and a second opening for the hot melt powder to fall from the powder outlet box to the powder receiving box or the powder inlet box is provided on the other side wall of the powder outlet box.

[0016] An automatic cyclic powder sprinkling device as described above, wherein the second conveying mechanism includes a second screw rod for conveying the hot melt powder at the bottom of the powder receiving box to the inlet of the recycling mechanism and a second driving mechanism for driving the second screw rod to rotate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By setting up a recycling mechanism, the present invention can automatically recycle the excess hot-melt powder in the powder receiving box to the powder spreading mechanism, realizing an automatic circulation process of the hot-melt powder spreading from the powder spreading mechanism, the excess hot-melt powder concentrating in the powder receiving box, and the excess hot-melt powder returning to the powder spreading mechanism through the recycling mechanism, so as to ensure that there is enough hot-melt powder in the powder spreading mechanism, well avoid the situation of powder shortage during powder spreading, without the need for manual operation to add hot-melt powder, with high automation degree, high production efficiency, greatly reducing production costs, strong practicability and large market competitiveness.

[0019] 2. By setting up a second conveying mechanism, the present invention conveys the dispersed hot-melt powder in the powder receiving box to the inlet of the recycling mechanism, well improving the efficiency of automatically circulating the hot-melt powder and avoiding the situation of less powder or even powder shortage during recycling by the recycling mechanism, with a simpler structure and stronger practicability.

[0020] 3. By setting up a third conveying mechanism, the hot-melt powder conveyed by the recycling mechanism to the powder spreading tray can more evenly cover the bottom opening, making the powder spreading by the powder spreading tray more uniform, with a better powder spreading effect, a simpler structure and stronger practicability. [Description of the Drawings]

[0021] Figure 1 is the three-dimensional view of the present invention;

[0022] Figure 2 is Figure 1 the exploded view of

[0023] Figure 3 is one of the exploded views of the present invention with the frame omitted;

[0024] Figure 4 is the second exploded view of the present invention with the frame omitted. [Detailed Embodiments]

[0025] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be construed as a limitation on the protection scope of the present invention.

[0026] As Figures 1 to 4 shown, an automatic circulating powder spreading device includes a frame 10, and a powder spreading mechanism for spreading hot-melt powder on a heat transfer substrate, a powder receiving box 11 for collecting excess hot-melt powder, and a recycling mechanism for recycling the hot-melt powder in the powder receiving box 11 to the powder spreading mechanism are provided on the frame 10.

[0027] The powder recycling mechanism can automatically recycle the excess hot melt powder in the powder receiving box 11 to the powder spraying mechanism, realizing an automatic circulation process of the hot melt powder falling from the powder spraying mechanism, the excess hot melt powder being concentrated in the powder receiving box 11, and the excess hot melt powder returning to the powder spraying mechanism through the recycling mechanism, so as to ensure that there is enough hot melt powder in the powder spraying mechanism, well avoid the situation of powder shortage during powder spraying, without the need for manual operation to add hot melt powder, with high automation, high production efficiency, greatly reducing production costs, strong practicability, and great market competitiveness.

[0028] A second conveying mechanism 4 for conveying the hot melt powder in the box to the inlet of the recycling mechanism is provided on the powder receiving box 11.

[0029] The second conveying mechanism 4 conveys the scattered hot melt powder in the powder receiving box 11 to the inlet of the recycling mechanism, well improving the efficiency of the automatic circulation of the hot melt powder and avoiding the situation of less powder or even powder shortage during the recycling of the recycling mechanism, with a simpler structure and stronger practicability.

[0030] The powder spraying mechanism includes a powder spraying tray 20 located above the powder receiving box 11 and used for loading hot melt powder. A bottom opening 21 is formed at the bottom of the powder spraying tray 20, and a screen 22 for filtering and screening the hot melt powder is connected to the bottom opening 21. The powder spraying mechanism further includes a vibration device 23 for intermittently vibrating the powder spraying tray 20 so that the hot melt powder on the powder spraying tray 20 falls from the bottom opening 21.

[0031] A third conveying mechanism 5 for conveying the hot melt powder at the outlet of the recycling mechanism to cover the bottom opening 21 is provided on the powder spraying tray 20.

[0032] The third conveying mechanism 5 can cover the bottom opening 21 with the hot melt powder conveyed to the powder spraying tray 20 by the recycling mechanism more evenly, making the powder spraying of the powder spraying tray 20 more uniform, with a better powder spraying effect, a simpler structure, and stronger practicability.

[0033] A side opening 25 is formed on one side of the powder spraying tray 20 away from the outlet of the recycling mechanism. The third conveying mechanism 5 includes a third screw rod 51 rotatably connected to the powder spraying tray 20 and a third driving mechanism 52 for driving the third screw rod 51 to rotate. When the third screw rod 51 rotates, it conveys the hot melt powder at the outlet of the recycling mechanism to cover the bottom opening 21 and pushes the excess hot melt powder out of the powder spraying tray 20 from the side opening 25.

[0034] The third driving mechanism 52 includes a third motor 521 and a third belt transmission assembly 522. Since the powder spraying tray 20 sprays powder intermittently and the powder spraying amount each time is small, in order to avoid the accumulation of hot melt powder in the powder spraying tray 20, when the third screw rod 51 rotates continuously, it can push the accumulated hot melt powder out of the powder spraying tray 20 from the side opening 25, and the accumulated hot melt powder falls and returns to the powder receiving box 11, with a simpler structure, a better powder spraying effect, and stronger practicability.

[0035] The frame 10 is provided with a cross beam 12. The vibration device 23 includes a number of vibrators 231 connected to the cross beam 12. The vibrators 231 abut against the powder spreading tray 20 to drive the powder spreading tray 20 to vibrate intermittently.

[0036] The recycling mechanism includes a powder inlet box 31 communicating with the powder receiving box 11, a powder outlet box 32 communicating with the powder spreading tray 20, and a conveying pipe 33 connecting the powder inlet box 31 and the powder outlet box 32. A first screw rod 34 for conveying the hot melt powder in the powder inlet box 31 to the powder outlet box 32 is arranged in the conveying pipe 33. The frame 10 is provided with a first driving mechanism 35 for driving the first screw rod 34 to rotate.

[0037] The first driving mechanism 35 includes a first motor 351 and a first belt transmission assembly 352. The inlet of the recycling mechanism is located at the powder inlet box 31, and the outlet of the recycling mechanism is located at the powder outlet box 32. The conveying pipe 33 extends into the bottom of the powder inlet box 31. The hot melt powder in the powder receiving box 11 will be conveyed into the powder inlet box 31 and accumulate to a certain height, thus improving the efficiency of the first screw rod 34 in pumping the hot melt powder upwards and reducing the situation of the first screw rod 34 idling. After the hot melt powder accumulates to a certain extent in the powder outlet box 32, it will be conveyed into the powder spreading tray 20 by the third screw rod 51.

[0038] The top of the powder inlet box 31 is open and communicates with the powder receiving box 11. The powder inlet box 31 includes a drawer 311 that can be pulled out or inserted relative to the frame 10. A transparent window 312 for observing the capacity of the hot melt powder in the powder inlet box 31 is arranged on the outer side wall of the drawer 311.

[0039] When the recycling mechanism is blocked, the drawer 311 can be pulled out to take out some of the hot melt powder, so that the amount of the hot melt powder in the circulation process is appropriate, and the recycling mechanism is prevented from being damaged due to blockage and stop.

[0040] A first opening 321 communicating with the powder spreading tray 20 is arranged on one side wall of the powder outlet box 32, and a second opening 322 for the hot melt powder to fall from the powder outlet box 32 to the powder receiving box 11 or the powder inlet box 31 is arranged on the other side wall of the powder outlet box 32.

[0041] When the hot melt powder in the powder outlet box 32 accumulates too much and the third screw rod 51 fails to convey it in time, the excess hot melt powder will automatically fall back into the powder receiving box 11 or the powder inlet box 31 from the second opening 322, thus effectively preventing the powder outlet box 32 from accumulating too much hot melt powder and blocking the recycling mechanism.

[0042] The second conveying mechanism 4 includes a second screw rod 41 for conveying the hot melt powder at the bottom of the powder receiving box 11 to the inlet of the recycling mechanism and a second driving mechanism 42 for driving the second screw rod 41 to rotate.

[0043] The second driving mechanism 42 includes a second motor 421 and a second belt transmission assembly 422.

[0044] The above embodiments are only the preferred solutions of the present invention. The present invention may also have other implementation solutions, such as reasonably combining the technical solutions described in multiple embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope set by the claims of this application.

Claims

1. An automatic cyclic powder spraying device, characterized in that: It includes a machine frame (10), on which there is a powder sprinkling mechanism for sprinkling hot melt powder on a heat transfer substrate, a powder receiving box (11) for collecting excess hot melt powder, and a recycling mechanism for recycling the hot melt powder in the powder receiving box (11) to the powder sprinkling mechanism; The powder sprinkling mechanism includes a powder sprinkling tray (20) located above the powder receiving box (11) and used for loading hot melt powder. The bottom of the powder sprinkling tray (20) is provided with a bottom opening (21), and the bottom opening (21) is connected with a screen (22) for filtering and screening the hot melt powder. The powder sprinkling mechanism also includes a vibration device (23) for intermittently vibrating the powder sprinkling tray (20) so that the hot melt powder on the powder sprinkling tray (20) falls from the bottom opening (21); On the powder sprinkling tray (20), there is a third conveying mechanism (5) for conveying the hot melt powder at the outlet of the recycling mechanism to cover the bottom opening (21); On one side of the powder sprinkling tray (20) away from the outlet of the recycling mechanism, there is a side opening (25). The third conveying mechanism (5) includes a third screw rod (51) rotatably connected to the powder sprinkling tray (20) and a third driving mechanism (52) for driving the third screw rod (51) to rotate. When the third screw rod (51) rotates, it conveys the hot melt powder at the outlet of the recycling mechanism to cover the bottom opening (21) and pushes the excess hot melt powder out of the powder sprinkling tray (20) from the side opening (25); The recycling mechanism includes a powder inlet box (31) communicated with the powder receiving box (11), a powder outlet box (32) communicated with the powder sprinkling tray (20), and a conveying pipe (33) connecting the powder inlet box (31) and the powder outlet box (32). Inside the conveying pipe (33), there is a first screw rod (34) for conveying the hot melt powder in the powder inlet box (31) to the powder outlet box (32). On the machine frame (10), there is a first driving mechanism (35) for driving the first screw rod (34) to rotate; The top of the powder inlet box (31) is open and communicated with the powder receiving box (11). The powder inlet box (31) includes a drawer (311) that can be pulled out or inserted relative to the machine frame (10). On the outer side wall of the drawer (311), there is a transparent window (312) for observing the capacity of the hot melt powder in the powder inlet box (31); On one side wall of the powder outlet box (32), there is a first opening (321) communicated with the powder sprinkling tray (20). On the other side wall of the powder outlet box (32), there is a second opening (322) for the hot melt powder to fall from the powder outlet box (32) into the powder receiving box (11) or the powder inlet box (31).

2. The automatic cyclic powder spraying device according to claim 1, wherein: On the powder receiving box (11), there is a second conveying mechanism (4) for conveying the hot melt powder in the box to the inlet of the recycling mechanism; 3. The automatic cyclic powder spraying device according to claim 1, wherein: On the machine frame (10), there is a cross beam (12). The vibration device (23) includes a plurality of vibrators (231) connected to the cross beam (12). The vibrators (231) abut against the powder sprinkling tray (20) to drive the powder sprinkling tray (20) to vibrate intermittently.

4. An automatic cyclic powder spraying device according to claim 2, characterized in that: The second conveying mechanism (4) includes a second screw rod (41) for conveying the hot melt powder at the bottom of the powder receiving box (11) to the inlet of the recycling mechanism and a second driving mechanism (42) for driving the second screw rod (41) to rotate.

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