Powder shaking machine

Abstract

The invention relates to a powder shaking machine. The powder shaking machine comprises a powder distribution box, a powder shaking chamber and a drying chamber, the powder distribution box comprises a box body and a stirring shaft; a stirring cavity is formed in the bottom of the box; n scrapers are circumferentially distributed in the middle of the stirring shaft; the end part of the scraper abuts against the wall of the stirring cavity; the vertical section of the stirring cavity is in a fan shape concentric with the stirring shaft; the fan-shaped angle is greater than or equal to 720 degrees / N; n > = 3; powder outlets are uniformly distributed at the bottom of the stirring cavity along the axial direction of the stirring shaft; the upper end of the box is open; the powder shaking chamber comprises a conical hopper body and a scattering roller; the drying chamber comprises an arc-shaped supporting plate and a drying cover; the arc-shaped supporting plate is fixedly connected with the side wall of the powder shaking machine; the drying cover is buckled above the arc-shaped supporting plate; the drying cover is provided with a heating pipe; according to the hot melt adhesive powder discharging device, hot melt adhesive powder can be uniformly discharged when being close to the powder outlet; an arc-shaped supporting plate enables the circulating PET film to be opened and fully supported; after being heated, the hot melt adhesive powder on the PET film does not gather together, but uniformly covers the PET film, so that a transparent layer formed by the hot melt adhesive powder is uniform in thickness.

Description

Technical Field

[0001] The present invention relates to the technical field of powder shaking machines, and in particular to a powder shaking machine. Background Art

[0002] A general powder shaking machine includes a powder distribution box, a powder shaking chamber, and a drying chamber from front to back; the powder distribution box is used to evenly distribute the hot melt adhesive powder on the PET film entering the powder shaking machine; the powder shaking chamber is used to shake off the excess hot melt adhesive powder on the PET film; the drying chamber is used to heat and melt the hot melt adhesive powder on the PET film to form a transparent hot melt adhesive layer on the PET film. The forming quality of the hot melt adhesive layer mainly depends on the uniformity of the hot melt adhesive powder on the PET film entering the drying chamber. The uniformity of the hot melt adhesive powder mainly depends on the uniformity of the powder distribution of the powder distribution box; the powder distribution box usually has a powder distribution port and a uniform powder distribution mechanism at the bottom of the box, and a powder inlet at the top; the conventional uniform part mechanism includes a horizontal auger and a vertically rotating stirring blade, and the powder inlet and powder distribution port cannot be isolated. This results in that each time powder is added to the powder distribution box, it will be concentrated in a certain part of the powder distribution box, and the added hot melt adhesive powder will be directly distributed through the local powder distribution port, so that the corresponding local area of ​​the PET film will get more hot melt adhesive powder; although the powder shaking room can shake off the excess hot melt adhesive powder, it still cannot avoid the uneven distribution of the hot melt adhesive powder when the PET film reaches the drying room; the PET film flow route in the drying room is horizontal, and the excess hot melt adhesive powder on the PET film is dried and heated to directly form a thicker hot melt adhesive mold layer. It is precisely because of the above reasons that the products corresponding to the powder shaking machine inevitably have uneven transparent hot melt adhesive films. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a powder shaking machine.

[0004] The technical scheme of the present invention is: a powder shaking machine, comprising a powder spreading box, a powder shaking chamber, and a drying chamber arranged in sequence; the powder spreading box, the powder shaking chamber, and the drying chamber are respectively responsible for the processes of powder spreading, powder shaking, and drying; these processes are continuous in the production process, so the arrangement of the powder spreading box, the powder shaking chamber, and the drying chamber is also continuous; the PET film passes through the bottom of the powder spreading box, the inside of the powder shaking chamber, and the inside of the drying chamber in sequence; The powder distribution box is arranged above the front side of the powder shaking chamber, and includes a box body and a stirring shaft that runs through the box body horizontally; the box body is used for temporarily storing hot melt adhesive powder; the stirring shaft is used for stirring the hot melt adhesive powder evenly, so as to facilitate even powder distribution; a stirring chamber is arranged at the bottom of the box body, which is the space where the stirring action of the stirring shaft occurs; N scrapers are distributed circumferentially in the middle of the stirring shaft; the end of the scraper is against the wall of the stirring chamber; the stirring shaft rotates and swings with the scraper, acting on the hot melt adhesive powder, so that the hot melt adhesive powder is stirred and mixed evenly; the vertical section of the stirring chamber is a sector concentric with the stirring shaft; the sector angle is ≥720° / N; N≥3; the scraper divides the internal space of the stirring chamber into N sub-chambers; the bottom of the stirring chamber has powder outlets evenly distributed along the axial direction of the stirring shaft; the upper end of the box body is open; the sub-chamber connected to the powder outlet and the sub-chamber connected to the upper end opening of the box body are separated by at least one sub-chamber; the hot melt adhesive powder enters the sub-chamber between the upper end opening of the box body and the powder outlet as the stirring shaft rotates and is fully stirred, and then is evenly discharged from the powder outlet for powder distribution; The powder shaking chamber is arranged at the lower front side of the drying chamber, and includes a conical bucket body and a scattering roller; the scattering roller is arranged at the rear of the conical bucket body and is rotatably connected to the side wall of the powder shaking machine laterally; the scattering roller is used to knock off the excess hot melt adhesive powder on the PET film; the conical bucket body collects the knocked off hot melt adhesive powder; The drying chamber includes an arc-shaped support plate and a drying cover; the arc-shaped support plate is fixedly connected to the side wall of the powder shaking machine; the arc-shaped support plate protrudes upward to allow the circulating PET film to be opened and fully supported; after the hot-melt adhesive powder on the PET film is heated, it will not gather together, but will be evenly covered on the PET film, thereby ensuring that the transparent layer formed by the hot-melt adhesive powder is uniform in thickness; the drying cover is buckled on the top of the arc-shaped support plate, and forms a drying chamber with the powder shaking machine parts below it; the bottom of the drying chamber is the arc-shaped support plate, the top is the drying cover, and the left and right sides are the side walls of the powder shaking machine; a smoke exhaust port is provided in the center of the top of the drying cover to provide negative pressure to the drying chamber The generated oil smoke generates suction; an n-shaped partition corresponding to the arc-shaped support plate is arranged inside the drying cover; the n-shaped partition changes accordingly with the ups and downs of the arc-shaped support plate to separate the internal space of the drying cover; above the n-shaped partition is an insulating cavity, which can be used to temporarily store the smoke generated on the PET film; the smoke itself carries heat, which can reduce the heat loss in the drying cavity from the top, thereby improving the drying effect of the drying room; heating tubes are evenly distributed at the front and back of the bottom of the n-shaped partition to provide a uniformly distributed radiant heat source for the drying room; a ventilation hole is arranged in the middle of the n-shaped partition; the n-shaped partition guides the oil smoke to the ventilation hole and then enters the insulating cavity.

[0005] The front and rear end ports of the drying cover are respectively provided with smoke shielding plates A and B, which are respectively closed from the front and rear ends of the drying cover to improve the drying effect of the drying cover; the smoke shielding plate A is connected to the drying cover by means of plywood and screws to form a fixed connection; the smoke shielding plate B is connected to the drying cover by means of hinges; when the smoke shielding plate B hangs down naturally, the drying chamber can be closed; the smoke shielding plate B is arranged at the end of the powder shaking machine and can also be lifted up to check the internal situation of the drying chamber.

[0006] The lower edge of the front end of the drying cover is hinged to the side wall of the powder shaking machine, so that the drying cover can be flipped up, which is convenient for maintenance of the drying chamber; gas springs are symmetrically provided on both sides of the drying cover; one end of the gas spring is connected to the drying cover, and the other end is connected to the side wall of the powder shaking machine; the gas spring can make the drying cover stay at any flipping angle, which is convenient for maintenance of the drying chamber.

[0007] Preferably, the powder shaking machine also includes a preheating plate; the preheating plate is arranged at the lower front side of the powder distribution box, and the rear end is hinged to the powder shaking machine, and a heating element is built in; the heating element provides a heat source for the preheating plate; the preheating plate is tilted relative to the powder shaking machine to adapt to the height of the PET film output by the printing equipment; a support groove in the length direction of the powder shaking machine is provided on the back of the preheating plate; a vertical groove corresponding to the support groove is provided at the front end of the powder shaking machine; a support rod is hinged in the support groove; a vertically arranged tooth plate is provided in the vertical groove; the tooth plate is provided with a plurality of vertically arranged tooth grooves; each tooth groove includes an oblique section, a vertical section, and a horizontal section connected end to end; the oblique section obliquely penetrates the edge of the tooth plate upward; a horizontal axis cooperating with the tooth groove is provided at the lower end of the support rod; the support rod uses the horizontal axis to establish a cooperating relationship with the tooth groove to support the preheating plate; the inclination angle of the preheating plate can be adjusted by replacing the tooth groove matched with the horizontal axis.

[0008] The support rod comprises an upper rod and a lower rod which are telescopically mounted relative to each other; the upper end of the upper rod is hinged to the support groove so that the support rod can swing vertically; the horizontal axis is transversely arranged at the lower end of the supporting lower rod; the lower end of the upper rod and the upper end of the lower rod are connected with each other using locking bolts and locking nuts; the upper rod is mounted on the outer side of the lower rod, and an axial long hole is provided at a position corresponding to the locking bolt; the locking nut is fixed to the inner side of the lower rod; the locking bolt passes through the axial long hole and cooperates with the locking nut thread; the mutual extension and contraction of the upper rod and the lower rod can change the length of the support rod, and thus change the inclination angle of the preheating plate; after the length of the support rod is adjusted appropriately, it can be locked using locking bolts and locking nuts; the length of the axial long hole is the stroke amount of the support rod length adjustment.

[0009] Preferably, a single row of powder outlets is difficult to ensure that the hot melt adhesive powder particles on the same vertical section can be discharged sequentially; therefore, there are several rows of powder outlets; adjacent rows of powder outlets are spaced apart to ensure that the hot melt adhesive powder on the same vertical section can be discharged sequentially, thereby achieving the purpose of uniform powder distribution.

[0010] Preferably, the powder distribution box also includes an outer shell and a buckle cover; the outer shell covers the outside of the box body to protect the box body, and it is also beneficial for the powder distribution box to be connected to the powder shaking machine; the buckle cover is buckled on the upper opening of the box body to prevent external debris from entering.

[0011] Furthermore, the powder dispensing box also includes a stirring motor; the stirring motor is arranged between the outer shell and the box body; the output shaft of the stirring motor is coaxially fixedly connected to the stirring shaft; and the stirring motor outputs torque to the stirring shaft.

[0012] Furthermore, the buckle cover is made of a transparent material, and the operation conditions inside the box can be observed through the buckle cover.

[0013] Furthermore, a handle is installed at the center of the top of the buckle cover to facilitate opening and closing the buckle cover.

[0014] Preferably, a powder collecting drawer is provided at the lower part of the conical bucket body; the top of the powder collecting drawer is open, corresponding to the bottom of the conical bucket body; the powder collecting drawer can be used to receive the hot melt adhesive powder shaken off in the powder shaking chamber to achieve the purpose of recycling; the PET film beaten by the breaking rod shakes off the excess hot melt adhesive powder in the form of shaking; the shaken hot melt adhesive powder slides down along the side wall of the conical bucket body, and finally enters the powder collecting drawer; after the powder collecting drawer collects the hot melt adhesive powder for a period of time, the powder collecting drawer can be pulled out horizontally, the hot melt adhesive powder can be taken out, and added to the powder distribution box.

[0015] Preferably, the powder shaking chamber also includes a powder shaking motor; the output shaft of the powder shaking motor is coaxially fixed to the scattering roller; the powder shaking motor is fixed to the side wall of the powder shaking machine in the powder shaking chamber; the powder shaking motor outputs torque for rotating the scattering roller.

[0016] Preferably, a cloth collecting roller is provided at the lower rear side of the drying chamber; a cloth collecting motor is provided at one side of the cloth collecting roller; the cloth collecting motor is drivingly connected to the cloth collecting roller; the cloth collecting motor drives the cloth collecting roller to rotate, and the cloth collecting roller collects the PET film.

[0017] Furthermore, a row of forward-facing fans is provided above the cloth collecting roller for cooling the PET film after drying.

[0018] Preferably, a plurality of clips are mounted on the stirring shaft by screw A; the clips are V-shaped structures, and both ends are connected to the scraper blades by screw B. The scraper blades and clips are detachably mounted on the stirring shaft and can be replaced in due course.

[0019] Furthermore, a plurality of mounting grooves are provided at the end of the scraper blade; the mounting grooves penetrate the edge of the scraper blade; screw B passes through the mounting grooves; the provision of the mounting grooves can simplify the process of disassembling and assembling the scraper blade.

[0020] Preferably, a support plate extending from the side wall of the powder shaking machine is provided below the arc-shaped support plate; the top of the support plate is in contact with the bottom surface of the arc-shaped support plate; the support plate lifts the arc-shaped support plate to ensure that the arc-shaped support plate maintains its shape.

[0021] The beneficial effects of the present invention are: the powder shaking machine of the present invention has the following advantages: (1) In the powder dispensing box of the present invention, the stirring chamber is divided into N sub-chambers by a scraper; there is at least one sub-chamber between the sub-chamber connected to the upper opening of the box body and the sub-chamber connected to the powder outlet; the hot melt adhesive powder added from the upper opening of the box body must rotate along with the stirring shaft by an angle of one sub-chamber and can be discharged from the powder outlet after being fully stirred and uniformly distributed; the hot melt powder discharged from the powder outlet is also evenly distributed; in the drying chamber of the present invention, the arc-shaped support plate allows the circulating PET film to be opened and fully supported; after the hot melt adhesive powder on the PET film is heated, it will not gather together, but will evenly cover the PET film, thereby ensuring that the transparent layer formed by the hot melt adhesive powder is uniform in thickness; (2) The powder outlets of the present invention are arranged in several rows; the powder outlets in adjacent rows are arranged at intervals, thereby ensuring that the hot melt adhesive powder on the same vertical section can be discharged sequentially, thereby achieving the purpose of uniform powder distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional powder shaking machine of the present invention. Figure 1 ; Figure 2 It is a three-dimensional powder shaking machine of the present invention. Figure 2 ; Figure 3 yes Figure 2 I magnified view of; Figure 4 yes Figure 1 A vertical cross-sectional view of Figure 5 yes Figure 4 II enlarged view; Figure 6 yes Figure 4 III magnified view; Figure 7 yes Figure 4 A magnified view of IV; Figure 8 It is a stereogram of the scraper; Fig. 9 is a three-dimensional diagram of the powder dispensing box in the second embodiment; Fig.10 yes Fig. 9 A vertical cross-sectional view of Fig.11 yes Fig.10 AA section view; Fig.12 yes Fig.11 A magnified view of V; Fig.13 yes Fig.10 BB cross-sectional view; Fig.14 yes Fig.10 CC section view; In the figure: 00. PET film, 01. vertical groove, 011. tooth plate, 0111. tooth groove, 01111. oblique section, 01112. vertical section, 01113. horizontal section, 02. side wall of powder shaking machine, 1. powder distribution box, 11. box body, 111. stirring chamber, 1111. sub-chamber, 112. powder outlet, 12. stirring shaft, 121. scraper, 1211. installation groove, 122. screw A, 123. clip, 1231. fixing nut, 124. screw B, 125. installation plate, 126. nut A, 13. shell, 14. buckle cover, 141. handle, 15. stirring motor, 21. conical bucket, 22. scattering roller, 221. powder shaking motor, 222. powder collecting drawer, 31. arc support plate, 311. support plate, 32. drying cover, 321. n-shaped partition, 3211. heating tube, 322. insulation chamber, 33. cloth collecting roller, 331. cloth collecting motor, 332. fan group, 34. smoke shielding board A, 341. splint, 35. smoke shielding board B, 351. hinge, 36. gas spring, 4. preheating plate, 41. support slot, 421. upper rod, 422. lower rod, 423. horizontal axis. Implementation

[0023] Example 1: See Figure 1-8 A powder shaking machine includes a powder spreading box 1, a powder shaking chamber, and a drying chamber which are arranged in sequence; the powder spreading box 1, the powder shaking chamber, and the drying chamber are responsible for the processes of powder spreading, powder shaking, and drying respectively; these processes are continuous in the production process, so the arrangement of the powder spreading box 1, the powder shaking chamber, and the drying chamber is also continuous; the PET film 00 passes through the bottom of the powder spreading box 1, the inside of the powder shaking chamber, and the inside of the drying chamber in sequence; The powder distribution box 1 is arranged above the front side of the powder shaking chamber, including a box body 11 and a stirring shaft 12 that runs through the box body 11 horizontally; the box body 11 is used to temporarily store hot melt adhesive powder; the stirring shaft 12 is used to stir the hot melt adhesive powder evenly, which is conducive to uniform powder distribution; a stirring chamber 111 is provided at the bottom of the box body 11, which is the space where the stirring action of the stirring shaft 12 occurs; N scrapers 121 are distributed on the circumference of the middle part of the stirring shaft 12; the end of the scraper 121 is against the wall of the stirring chamber 111; the stirring shaft 12 rotates and drives the scraper 121 to swing, acting on the hot melt adhesive powder, so that the hot melt adhesive powder is stirred and mixed evenly; the vertical section of the stirring chamber 111 is the same as the stirring The mixing shaft 12 is concentric with the sector; the sector angle is ≥720° / N; N≥3; the scraper 121 divides the internal space of the mixing chamber 111 into N sub-chambers 1111; the powder outlets 112 are evenly distributed along the axial direction of the mixing shaft 12 at the bottom of the mixing chamber 111; the upper end of the box 11 is open; the sub-chamber 1111 connected to the powder outlet 112 and the sub-chamber 1111 connected to the upper end opening of the box 11 are separated by at least one sub-chamber 1111; the hot melt adhesive powder enters the sub-chamber 1111 between the upper end opening of the box 11 and the powder outlet 112 as the mixing shaft 12 rotates, and is fully stirred, and then evenly discharged from the powder outlet 112 for powder distribution; In this embodiment, N=4; the vertical section of the stirring chamber 111 is a fan-shaped section with an angle of 180°; there is a sub-chamber 1111 between the sub-chamber 1111 connected to the powder outlet 112 and the sub-chamber 1111 connected to the upper opening of the box body 11; the hot melt adhesive powder added from the upper opening of the box body 11 cannot be directly connected to the powder outlet 112, but must enter the sub-chamber 1111 and move with the rotation of the stirring shaft 12 before it can be discharged from the powder outlet 112. The hot melt adhesive powder is evenly stirred as the stirring shaft 12 rotates; the evenly stirred hot melt adhesive powder can be evenly discharged when it is close to the powder outlet 112; The powder shaking chamber is arranged at the lower front side of the drying chamber, and includes a conical bucket body 21 and a scattering roller 22; the scattering roller 22 is arranged at the rear of the conical bucket body 21, and is rotatably connected to the side wall 02 of the powder shaking machine in the transverse direction; the scattering roller 22 is used to knock off the excess hot melt adhesive powder on the PET film 00; the conical bucket body 21 collects the knocked-off hot melt adhesive powder; The drying chamber includes an arc-shaped support plate 31 and a drying cover 32; the arc-shaped support plate 31 is fixedly connected to the side wall 02 of the powder shaking machine; the arc-shaped support plate 31 protrudes upward, so that the circulating PET film 00 is opened and fully supported; after the hot-melt adhesive powder on the PET film 00 is heated, it will not gather together, but will be evenly covered on the PET film 00, thereby ensuring that the transparent layer formed by the hot-melt adhesive powder is uniform in thickness; the drying cover 32 is buckled on top of the arc-shaped support plate 31, and forms a drying chamber with the powder shaking machine parts below it; the bottom of the drying chamber is the arc-shaped support plate 31, the top is the drying cover 32, and the left and right sides are the side walls 02 of the powder shaking machine; a smoke exhaust port is provided in the center of the top of the drying cover 32 to provide negative pressure to control the oil smoke generated in the drying chamber Generate suction; an n-shaped partition 321 corresponding to the arc-shaped support plate 31 is arranged inside the drying cover 32; the n-shaped partition 321 changes accordingly with the ups and downs of the arc-shaped support plate 31, and separates the internal space of the drying cover 32; above the n-shaped partition 321 is an insulating cavity 322, which can be used to temporarily store the smoke generated on the PET film 00; the smoke itself carries heat, which can reduce the heat loss in the drying cavity from the top, thereby improving the drying effect of the drying room; heating tubes 3211 are evenly distributed on the front and back of the bottom of the n-shaped partition 321, providing a uniformly distributed radiant heat source for the drying room; a ventilation hole is arranged in the middle of the n-shaped partition 321; the n-shaped partition 321 guides the oil smoke, guides the oil smoke to the ventilation hole and then enters the insulating cavity 322.

[0024] Compared with the prior art, in the powder dispensing box 1 of the present invention, the stirring chamber 111 is divided into N sub-chambers 1111 by a scraper 121; there is at least one sub-chamber 1111 between the sub-chamber 1111 connected to the upper opening of the box body 11 and the sub-chamber 1111 connected to the powder outlet 112; the hot melt adhesive powder added from the upper opening of the box body 11 must rotate through an angle of one sub-chamber 1111 along with the stirring shaft 12, and can be discharged from the powder outlet 112 after being fully stirred; the hot melt powder discharged from the powder outlet 112 is also evenly arranged; in the drying chamber of the present invention, the arc-shaped support plate 31 allows the circulating PET film 00 to be opened and fully supported; after the hot melt adhesive powder on the PET film 00 is heated, it will not gather together, but will be evenly covered on the PET film 00, thereby ensuring that the transparent layer formed by the hot melt adhesive powder is uniform in thickness.

[0025] The front and rear end ports of the drying cover 32 are respectively provided with a smoke shielding plate A 34 and a smoke shielding plate B 35, which are respectively closed from the front and rear ends of the drying cover 32 to improve the drying effect of the drying cover 32; the smoke shielding plate A 34 is connected to the drying cover 32 through a splint 341 and screws to form a fixed connection; the smoke shielding plate B 35 is connected to the drying cover 32 through a hinge 351; when the smoke shielding plate B 35 hangs down naturally, the drying chamber can be closed; the smoke shielding plate B 35 is set at the end of the powder shaking machine and can also be lifted up to check the internal situation of the drying chamber.

[0026] The lower edge of the front end of the drying cover 32 is hinged to the side wall 02 of the powder shaking machine, so that the drying cover 32 can be flipped up, which is convenient for maintenance of the drying chamber; gas springs 36 are symmetrically provided on both sides of the drying cover 32; one end of the gas spring 36 is connected to the drying cover 32, and the other end is connected to the side wall 02 of the powder shaking machine; the gas spring 36 can make the drying cover 32 stay at any flip-up angle, which is convenient for maintenance of the drying chamber.

[0027] The powder shaking machine also includes a preheating plate 4; the preheating plate 4 is arranged at the lower front side of the powder distribution box 1, and the rear end is hinged to the powder shaking machine, and a heating element is built in; the heating element provides a heat source for the preheating plate 4; the preheating plate 4 is tilted relative to the powder shaking machine to adapt to the height of the PET film 00 output by the printing device; the back of the preheating plate 4 is provided with a support groove 41 in the length direction of the powder shaking machine; the front end of the powder shaking machine is provided with a vertical groove 01 corresponding to the support groove 41; a support rod is hinged in the support groove 41; a vertically arranged tooth plate 011 is provided in the vertical groove 01; the tooth plate 011 A plurality of vertically arranged tooth sockets 0111 are provided; each tooth socket 0111 includes an oblique section 01111, a vertical section 01112, and a horizontal section 01113 connected end to end; the oblique section 01111 obliquely penetrates the edge of the tooth plate 011 upward; a horizontal axis 423 cooperating with the tooth socket 0111 is provided at the lower end of the support rod; the support rod establishes a cooperating relationship with the tooth socket 0111 by using the horizontal axis 423 to support the preheating plate 4; the inclination angle of the preheating plate 4 can be adjusted by replacing the tooth socket 0111 cooperating with the horizontal axis 423.

[0028] The support rod includes an upper rod 421 and a lower rod 422 which are relatively telescopically mounted; the upper end of the upper rod 421 is hinged to the support groove 41 so that the support rod can swing vertically; the horizontal axis 423 is horizontally arranged at the lower end of the supporting lower rod 422; the lower end of the upper rod 421 and the upper end of the lower rod 422 are connected using locking bolts and locking nuts; the upper rod 421 is mounted on the outer side of the lower rod 422, and an axial long hole is provided at a position corresponding to the locking bolt; the locking nut is fixed to the inner side of the lower rod 422; the locking bolt passes through the axial long hole and cooperates with the locking nut thread; the mutual extension and contraction of the upper rod 421 and the lower rod 422 can change the length of the support rod, and then change the inclination angle of the preheating plate 4; after the length of the support rod is adjusted appropriately, it can be locked using locking bolts and locking nuts; the length of the axial long hole is the stroke amount of the support rod length adjustment.

[0029] A single row of powder outlets 112 cannot ensure that the hot melt adhesive powder particles on the same vertical section can be discharged sequentially; therefore, there are several rows of powder outlets 112; adjacent rows of powder outlets 112 are spaced apart to ensure that the hot melt adhesive powder on the same vertical section can be discharged sequentially, thereby achieving the purpose of uniform powder distribution.

[0030] The powder distribution box 1 also includes an outer shell 13 and a buckle cover 14; the outer shell 13 covers the outside of the box body 11 to protect the box body 11, and it is also beneficial for the powder distribution box 1 to be connected with the powder shaking machine; the buckle cover 14 is buckled on the upper opening of the box body 11 to prevent external debris from entering.

[0031] The powder dispensing box 1 further includes a stirring motor 15 ; the stirring motor 15 is disposed between the housing 13 and the box body 11 ; the output shaft of the stirring motor 15 is coaxially fixedly connected to the stirring shaft 12 ; and the stirring motor 15 outputs torque to the stirring shaft 12 .

[0032] The buckle cover 14 is made of a transparent material, and the operation conditions in the box body 11 can be observed through the buckle cover 14 .

[0033] A handle 141 is installed at the top center of the buckle cover 14 to facilitate opening and closing the buckle cover 14.

[0034] A powder collecting drawer 222 is provided at the lower part of the conical bucket body 21; the top of the powder collecting drawer 222 is open, corresponding to the bottom of the conical bucket body 21; the powder collecting drawer 222 can be used to receive the hot melt adhesive powder shaken off in the powder shaking chamber to achieve the purpose of recycling; the PET film 00 beaten by the breaking rod shakes off the excess hot melt adhesive powder in the form of shaking; the shaken hot melt adhesive powder slides down along the side wall of the conical bucket body 21, and finally enters the powder collecting drawer 222; after the powder collecting drawer 222 collects the hot melt adhesive powder for a period of time, the powder collecting drawer 222 can be pulled out horizontally, the hot melt adhesive powder can be taken out and added to the powder distribution box 1.

[0035] The powder shaking chamber also includes a powder shaking motor 221; the output shaft of the powder shaking motor 221 is coaxially fixed to the scattering roller 22; the powder shaking motor 221 is fixed to the side wall 02 of the powder shaking machine in the powder shaking chamber; the powder shaking motor 221 outputs torque for the scattering roller 22 to rotate.

[0036] A cloth collecting roller 33 is provided at the lower rear side of the drying chamber; a cloth collecting motor 331 is provided on one side of the cloth collecting roller 33; the cloth collecting motor 331 is drivingly connected to the cloth collecting roller 33; the cloth collecting motor 331 drives the cloth collecting roller 33 to rotate, and the cloth collecting roller 33 collects the PET film 00.

[0037] A row of forward-facing fans 332 is provided above the cloth collecting roller 33 for cooling the PET film 00 after drying.

[0038] A plurality of clips 123 are mounted on the stirring shaft 12 through screws A 122; the clips 123 are V-shaped structures, and both ends are connected to the scraper 121 through screws B 124. The scraper 121 and the clips 123 are detachably mounted on the stirring shaft 12 and can be replaced in due course.

[0039] In this embodiment, there are two clips 123, which are symmetrically installed on both sides of the stirring shaft 12; screw A 122 passes through the bottom end of the clip 123 and the stirring shaft 12 and is threadedly matched with nut A 126; screw A 122 and nut A 126 clamp the clip 123 and the stirring shaft 12 in the middle position; fixing nuts 1231 are provided on the inner end surfaces of both ends of the clip 123; one side of the scraper 121 is against the outer side surface of the end of the clip 123, and the other side is provided with a mounting plate 125; screw B 124 passes through the mounting plate 125 and the scraper 121 and is threadedly connected with the fixing nut 1231.

[0040] A plurality of mounting grooves 1211 are provided at the end of the scraper blade 121 ; the mounting grooves 1211 penetrate the edge of the scraper blade 121 ; the screws 124 pass through the mounting grooves 1211 ; the provision of the mounting grooves 1211 can simplify the disassembly and assembly process of the scraper blade 121 .

[0041] A support plate 311 extending from the powder shaking machine side wall 02 is provided below the arc-shaped support plate 31; the top of the support plate 311 is in contact with the bottom surface of the arc-shaped support plate 31; the support plate 311 lifts the arc-shaped support plate 31 to ensure that the arc-shaped support plate 31 maintains its shape.

[0042] The working process of this embodiment includes the following steps: ①PET film 00 flows on the preheating plate 4 According to the height of the PET film 00 entering the powder shaking machine, select a suitable tooth groove 0111 to insert into the horizontal shaft 423, adjust the inclination angle of the preheating plate 4, so that the PET film 00 completely adheres to the surface of the preheating plate 4 and enters the powder shaking machine; start the heating element inside the preheating plate 4; the heat energy generated by the heating element acts on the PET film 00 through the preheating plate 4 to preheat the PET film 00; The PET film 00 before entering the powder shaking machine has undergone inkjet printing, and there is moisture on the PET film 00, which is not conducive to the combination of hot melt adhesive powder and PET film 00; preheating the PET film 00 can reduce the moisture on the PET film 00 and increase the bonding ability of the PER film and the hot melt adhesive powder; ②PET film 00 flows under powder dispensing box 1 Add hot melt adhesive powder to the powder dispensing box 1; because the hot melt adhesive powder cannot be directly connected to the powder outlet 112; therefore, no hot melt adhesive powder will be discharged from the powder outlet 112 immediately; the hot melt adhesive powder fills the upper part of the box body 11 of the powder dispensing box 1; the stirring motor 15 is started, the stirring shaft 12 rotates, and the scraper 121 rotates accordingly; each sub-chamber 1111 in the stirring chamber 111 is filled with hot melt adhesive powder in turn, and rotates around the stirring shaft 12; the hot melt adhesive powder on the upper part of the box body 11 will quickly The speed is reduced; before each sub-cavity 1111 passes through the powder outlet 112, the hot melt adhesive powder is fully and evenly stirred with the action of the scraper 121; when each sub-cavity 1111 passes through the powder outlet 112, a part of the hot melt adhesive powder is discharged from the powder outlet 112, and the PET film 00 is evenly distributed; when the sub-cavity 1111 passes above the stirring chamber 111, it can be replenished from the upper part of the box body 11; hot melt adhesive powder is added at any time to ensure that there is a certain amount of hot melt adhesive powder on the upper part of the box body 11; ③PET film 00 flows in the powder shaking room The PET film 00 naturally falls after the hot melt adhesive powder is accumulated; the powder shaking motor 221 is started, and the scattering roller 22 rotates to act on the PET film 00 to shake off the excess hot melt adhesive powder; ④PET film 00 flows in the drying room The PET film 00 enters the drying chamber; the arc-shaped support plate 31 supports the PET film 00 so that the PET film 00 enters the drying chamber along a convex flow path; the hot melt adhesive powder is evenly distributed above the PET film 00; the heating tube 3211 is turned on to heat the PET film 00 so that the hot melt adhesive powder melts and forms a hot melt adhesive transparent layer of uniform thickness; ⑤PET film 00 collection cloth The cloth collecting motor 331 is clocked in to rotate the cloth collecting roller 33; the PET film 00 is wound onto the cloth collecting roller 33 to be collected; the cloth collecting motor 331 also provides power for the circulation of the PET film 00; before the PET film 00 is collected, the fan group 332 cools the surface of the PET film 00 with air to accelerate the formation of the hot melt adhesive transparent film.

[0043] Example 2: See Figure 9-14 , Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The differences are: in this embodiment, N=3; the vertical section of the stirring chamber 111 is a fan-shaped section with an angle of 240°; there is a sub-chamber 1111 between the sub-chamber 1111 connected to the powder outlet 112 and the sub-chamber 1111 connected to the upper opening of the box body 11.

[0044] In this embodiment, there are three clips 123 distributed around the circumference of the stirring shaft 12; the screw A 122 passes through the bottom end of the clip 123 and is threadedly connected to the stirring shaft 12; a fixing nut 1231 is provided on the inner end surface of one end of the clip 123; one side of the scraper 121 is against the outer side surface of the end of the clip 123, and the other side is provided with a mounting plate 125; the screw B 124 passes through the clip 123 and the scraper 121 and is threadedly connected to the fixing nut 1231.

Claims

1. A powder shaking machine, comprising a powder distribution box, a powder shaking chamber, and a drying chamber arranged in sequence; characterized in that: The powder distribution box is arranged above the front side of the powder shaking chamber, and comprises a box body and a stirring shaft that runs through the box body horizontally; a stirring chamber is arranged at the bottom of the box body; N scrapers are distributed circumferentially in the middle of the stirring shaft; the ends of the scrapers are against the wall of the stirring chamber; the vertical section of the stirring chamber is a sector concentric with the stirring shaft; the sector angle is ≥720° / N; N≥3; powder outlets are evenly distributed along the axial direction of the stirring shaft at the bottom of the stirring chamber; the upper end of the box body is open; The powder shaking chamber is arranged at the lower front side of the drying chamber, and comprises a conical bucket body and a scattering roller; the scattering roller is arranged at the rear of the conical bucket body and is rotatably connected with the side wall of the powder shaking machine in a transverse direction; The drying chamber includes an arc-shaped support plate and a drying cover; the arc-shaped support plate is fixedly connected to the side wall of the powder shaking machine; the drying cover is buckled on the arc-shaped support plate; a smoke extraction port is provided at the top center of the drying cover; an n-shaped partition corresponding to the arc-shaped support plate is provided inside the drying cover; an insulating cavity is provided above the n-shaped partition; heating tubes are evenly distributed on the front and back of the bottom of the n-shaped partition; and a ventilation hole is provided in the middle of the n-shaped partition.

2. The powder shaking machine according to claim 1, characterized in that: It also includes a preheating plate; the preheating plate is arranged at the lower front side of the powder distribution box, and the rear end is hinged to the powder shaking machine, and a heating element is built in; a support groove in the length direction of the powder shaking machine is provided on the back of the preheating plate; a vertical groove corresponding to the support groove is provided at the front end of the powder shaking machine; a support rod is hinged in the support groove; a vertically arranged tooth plate is provided in the vertical groove; the tooth plate is provided with a plurality of vertically arranged tooth grooves; each tooth groove includes an oblique section, a vertical section, and a horizontal section connected end to end; the oblique section obliquely penetrates the edge of the tooth plate upward; a horizontal axis matching the tooth groove is provided at the lower end of the support rod.

3. The powder shaking machine according to claim 1, characterized in that: The powder outlets are arranged in several rows; the powder outlets in adjacent rows are arranged at intervals.

4. The powder shaking machine according to claim 1, characterized in that: A powder collecting drawer is arranged at the lower part of the conical bucket body; the top of the powder collecting drawer is open and corresponds to the bottom of the conical bucket body.

5. The powder shaking machine according to claim 1, characterized in that: A cloth collecting roller is arranged at the lower rear side of the drying chamber; a cloth collecting motor is arranged at one side of the cloth collecting roller; and the cloth collecting motor is drivingly connected with the cloth collecting roller.

6. The powder shaking machine according to claim 1, characterized in that: A plurality of clips are installed on the stirring shaft through screw A; the clips are V-shaped structures, and both ends are connected to the scraper through screw B.

7. The powder shaking machine according to claim 1, characterized in that: A supporting plate extending outward from the side wall of the powder shaking machine is arranged below the arc-shaped supporting plate; the top of the supporting plate is in contact with the bottom surface of the arc-shaped supporting plate.

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