A powder supply center

Abstract

The application discloses a toner supply center, which comprises a machine body, a toner cartridge, an output toner pump assembly, a cleaning gas supply device and an on-off control valve. The toner cartridge is arranged on the machine body and is provided with a toner accommodating cavity and a toner outlet of the toner cartridge communicating with the toner accommodating cavity. The output toner pump assembly comprises a toner outlet seat and an output toner pump, the toner outlet seat is arranged on the machine body and is provided with a front section toner outlet channel, a rear section toner outlet channel, a first cleaning gas input channel and a second cleaning gas input channel. The cleaning gas supply device is configured to input compressed gas into the first cleaning gas input channel and the second cleaning gas input channel. The on-off control valve is arranged on the toner outlet seat and is configured to control the communication and disconnection between the rear section toner outlet channel and the front section toner outlet channel. The toner supply center has the advantages of convenient toner cleaning, simple structure and easy implementation.

Description

Technical Field

[0001] This invention relates to equipment for powder coating processes, and particularly to a powder supply center. Background Technology

[0002] Existing toner supply centers mainly consist of a toner cartridge and an output toner pump assembly. The toner cartridge stores toner, and the output toner pump assembly extracts the toner from the cartridge and delivers it externally. When a color change is needed at the toner supply center, it is necessary to clean not only the toner in the cartridge but also the toner along the toner delivery path from the cartridge to the output toner pump assembly and the external output pipeline. In existing technologies, cleaning toner often requires disconnecting the aforementioned toner delivery path, which is cumbersome. Currently, there is another structure where the output toner pump assembly includes an input seat, an output seat, and an air blowing seat. During normal toner output, the input and output seats are in contact, and their interconnected channels form a toner channel through which the output toner pump extracts toner from the cartridge and outputs it externally. When cleaning toner along the delivery path is required, the input and output seats are separated, and the air blowing seat is placed between them. The air blowing seat has an air passage; compressed gas is introduced into this air passage, and the compressed gas blows through the channels in the input and output seats, thus cleaning the toner along the delivery path from two directions. In the improved structure described above, the input seat, output seat, and air blowing seat are moved by an automated drive device, eliminating the need to manually disconnect the toner supply path for toner cleaning. However, this improved structure requires multiple movable seats and drive devices, resulting in a more complex structure and higher cost. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a powder supply center that facilitates powder cleaning, has a simple structure, and is easy to implement.

[0004] According to an embodiment of the present invention, a powder supply center includes: a machine body; a powder cylinder disposed on the machine body, the powder cylinder having a powder receiving cavity and a powder outlet communicating with the powder receiving cavity; and an output powder pump assembly including a powder outlet seat and an output powder pump, the powder outlet seat being disposed on the machine body, the powder outlet seat having a front powder outlet channel, a rear powder outlet channel, a first cleaning air input channel, and a second cleaning air input channel, the front powder outlet channel being communicatively connected to the powder outlet of the powder cylinder, the rear powder outlet channel being communicatively connected to the front powder outlet channel, and the output powder pump being communicatively connected to the powder outlet of the powder cylinder. A powder holder is connected to and can extract powder from the powder-containing chamber and output it externally through the front powder outlet channel and the rear powder outlet channel. The first cleaning gas input channel is connected to the front powder outlet channel, and the second cleaning gas input channel is connected to the rear powder outlet channel. A cleaning gas supply device is configured to input compressed gas into the first cleaning gas input channel and the second cleaning gas input channel. An on / off control valve is disposed on the powder outlet, and the on / off control valve is configured to control the connection and disconnection between the rear powder outlet channel and the front powder outlet channel.

[0005] The powder supply center according to embodiments of the present invention has at least the following beneficial effects: When the powder supply center normally supplies color powder, the on / off control valve keeps the front powder outlet channel and the rear powder outlet channel connected. Through the action of the output powder pump, the color powder in the powder cylinder is output after passing through the front and rear powder outlet channels. When it is necessary to clean the color powder, the on / off control valve disconnects the connection between the front and rear powder outlet channels. Compressed gas is input to the first and second cleaning gas input channels through the cleaning gas supply device. One path of compressed gas cleans the color powder towards the front powder outlet channel and the powder cylinder through the first cleaning gas input channel, while the other path cleans the color powder towards the rear powder outlet channel through the second cleaning gas input channel. Thus, color powder cleaning in both directions can be achieved without disassembling the pipeline. The aforementioned powder supply center can achieve the color powder cleaning function with a simple structure, while eliminating the need for complex moving bases and drive structures, making it easy to implement and widely apply.

[0006] According to some embodiments of the present invention, the on / off control valve is a pinch valve, and the front powder outlet channel and the rear powder outlet channel are connected through the pinch valve.

[0007] According to some embodiments of the present invention, a first check valve and a second check valve are further included. The first check valve is configured to restrict the flow of gas from the front powder outlet channel to the cleaning gas supply device through the first cleaning gas input channel, and the second check valve is configured to restrict the flow of gas from the rear powder outlet channel to the cleaning gas supply device through the second cleaning gas input channel.

[0008] According to some embodiments of the present invention, the machine body is provided with a powder extraction pipe and an air receiving seat. The air receiving seat is provided with a vertically extending connecting channel. The connecting channel is communicatively connected to the powder extraction pipe. The lower end of the connecting channel has an opening. The powder cylinder is disposed below the air receiving seat. The powder cylinder includes a cylinder body and a cylinder cover. The cylinder body is disposed on the machine body. The cylinder cover is disposed on the upper side of the cylinder body and is used to enclose the cylinder body to form the powder receiving cavity. The cylinder cover is movable up and down relative to the cylinder body. The cylinder cover is provided with a vertically extending insertion part. The insertion part is provided with a hollow channel. The lower end of the hollow channel is connected to the inner side of the cylinder cover. The insertion part passes through the opening at the lower end of the connecting channel and is inserted into the connecting channel. The insertion part is provided with a connecting port connecting the connecting channel and the hollow channel. The machine body is provided with a cylinder cover driving assembly. The cylinder cover driving assembly is connected to the cylinder cover and can drive the cylinder cover to move up and down. When the cylinder cover moves up and down, the connecting port moves within the connecting channel.

[0009] According to some embodiments of the present invention, the cylinder cover driving assembly includes two cylinders, the cylinders are vertically disposed on the machine body, the cylinder cover is provided with connecting parts corresponding to the cylinders on both sides of the insertion part, and the piston rod of the cylinder is connected to the corresponding connecting part.

[0010] According to some embodiments of the present invention, the air inlet seat is provided with a guide assembly, the guide assembly including a pair of left and right limiting rods and a pair of front and rear limiting rods, the pair of left and right limiting rods being located on the left and right sides of the insertion part respectively, the pair of front and rear limiting rods being located on the front and rear sides of the insertion part respectively, and the insertion part being adaptedly and movably inserted between the pair of left and right limiting rods and the pair of front and rear limiting rods.

[0011] According to some embodiments of the present invention, at least two pairs of left and right limiting rods and at least two pairs of front and rear limiting rods are provided, and each pair of left and right limiting rods and front and rear limiting rods are arranged alternately in a vertical direction.

[0012] According to some embodiments of the present invention, the left and right limiting rods and the front and rear limiting rods are all provided with rotatable roller portions, and the left and right limiting rods and the front and rear limiting rods cooperate with the insertion portion through the roller portions.

[0013] According to some embodiments of the present invention, an input powder pump assembly for inputting powder into the powder cylinder is further included. The input powder pump assembly includes a suction rod and an input powder pump. The suction rod has a powder extraction channel along its length. One end of the suction rod is provided with a suction port communicating with the powder extraction channel. The input powder pump is disposed on the machine body. The other end of the suction rod is connected to the input powder pump through a flexible pipeline. The input port of the input powder pump is communicatively connected to the powder extraction channel, and the output port of the input powder pump is communicatively connected to the powder receiving chamber.

[0014] According to some embodiments of the present invention, the machine body is provided with a suction rod bracket, the suction rod bracket is provided with a mounting hole for vertically inserting and installing the suction rod, the suction rod being detachably inserted into the mounting hole; the machine body is provided with a powder bag hopper, the powder bag hopper is provided with a conical cavity, the upper end of the conical cavity is a larger end and the upper end of the conical cavity is provided with an opening, and the mounting hole of the suction rod bracket can be vertically aligned with the smaller end of the conical cavity.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention;

[0018] Figure 2 This is a partial component diagram of an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the powder outlet seat according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the output powder pump assembly normally outputting color powder according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the output powder pump assembly during color powder cleaning according to an embodiment of the present invention;

[0022] Figure 6 for Figure 1 A partial structural diagram of the structure shown;

[0023] Figure 7 This is a schematic diagram of the structure of the air inlet seat of this invention cut in half according to an embodiment of the invention;

[0024] Figure 8 for Figure 1A partial structural diagram of the structure shown;

[0025] Figure 9 This is a three-dimensional schematic diagram of the suction rod according to an embodiment of the present invention;

[0026] Figure 10 for Figure 8 A schematic diagram of the structure with the suction rod inserted into the powder cleaning tube;

[0027] Figure 11 for Figure 8 Enlarged view of point A;

[0028] Figure 12 for Figure 10 Enlarged view of point B;

[0029] Figure 13 This is a three-dimensional schematic diagram of the back side of an embodiment of the present invention.

[0030] Figure label:

[0031] Machine body 100, upper chamber 101, middle chamber 102, lower chamber 103, powder extraction pipe 110, main pipe 111, first branch pipe 112, second branch pipe 113, third branch pipe 114, fourth branch pipe 115, fifth branch pipe 116, air inlet 120, connecting channel 121, cylinder cover drive assembly 130, cylinder 131, left and right limit rods 140, front and rear limit rods 150, suction rod bracket 160, mounting hole 161, powder bag hopper 170, conical cavity 171, powder cleaning pipe 180, insertion port 181, snap fastener 182, baffle part 1821, bayonet 1822;

[0032] Powder cartridge 200, powder cartridge outlet 201, cartridge body 210, cartridge cover 220, insertion part 221, hollow channel 2211, connecting port 2212, connecting part 222;

[0033] The powder pump assembly 300, the powder outlet seat 310, the front powder outlet channel 311, the rear powder outlet channel 312, the first cleaning air input channel 313, the second cleaning air input channel 314, and the powder pump 320 are included.

[0034] First pipe 410, second pipe 420, third pipe 430, fourth pipe 440;

[0035] Suction rod 510, suction port 511, adapter 512, boss 513, connecting pipe 514, input powder pump 520. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0040] Reference Figures 1 to 3 A powder supply center includes: a machine body 100, a powder cylinder 200, an output powder pump assembly 300, a cleaning air supply device, and an on / off control valve.

[0041] The powder cylinder 200 is installed on the machine body 100. The powder cylinder 200 is provided with a powder receiving cavity and a powder outlet 201 communicating with the powder receiving cavity. The output powder pump assembly 300 includes a powder outlet seat 310 and an output powder pump 320. The powder outlet seat 310 is disposed on the machine body 100 and has a front powder outlet channel 311, a rear powder outlet channel 312, a first cleaning gas input channel 313, and a second cleaning gas input channel 314. The front powder outlet channel 311 is communicatively connected to the powder outlet 201 of the powder cylinder, and the rear powder outlet channel 312 is communicatively connected to the front powder outlet channel 311. The output powder pump 320 is connected to the powder outlet seat 310 and can extract powder from the powder chamber and output it externally through the front powder outlet channel 311 and the rear powder outlet channel 312. The first cleaning gas input channel 313 is communicatively connected to the front powder outlet channel 311, and the second cleaning gas input channel 314 is communicatively connected to the rear powder outlet channel 312. A cleaning gas supply device is configured to input compressed gas into the first cleaning gas input channel 313 and the second cleaning gas input channel 314. An on / off control valve is located at the powder outlet seat 310. The on / off control valve is configured to control the connection and disconnection between the downstream powder outlet channel 312 and the upstream powder outlet channel 311. It is understood that, in the description of the embodiment, the two channels being connectable means that the two channels can be connected. Specifically, this can mean that the two channels are in a mutually connected structure, or that the connection needs to be controlled by a valve that controls the connection between the two channels.

[0042] Reference Figure 4 When the toner supply center is normally supplying toner, the on / off control valve keeps the front toner outlet channel 311 and the rear toner outlet channel 312 connected. Through the action of the output toner pump 320, the toner in the toner cartridge 200 is output after passing through the front toner outlet channel 311 and the rear toner outlet channel 312. (Refer to...) Figure 5 When toner cleaning is required, the connection between the front toner outlet channel 311 and the rear toner outlet channel 312 is disconnected by the on / off control valve. Compressed gas is then supplied to the first cleaning gas input channel 313 and the second cleaning gas input channel 314 via the cleaning gas supply device. One stream of compressed gas flows through the first cleaning gas input channel 313 towards the front toner outlet channel 311 and the toner cartridge 200 to clean the toner, while the other stream flows through the second cleaning gas input channel 314 towards the rear toner outlet channel 312 to clean the toner. This allows for toner cleaning in both directions without disassembling the pipeline. The aforementioned toner supply center provides a simple toner cleaning function without requiring a complex moving base or drive structure, making it easy to implement and widely apply.

[0043] In this embodiment, two sets of output powder pump assemblies 300 are provided to output color powder respectively. In each set of output powder pump assemblies 300, multiple output powder pumps 320 are provided and arranged in a row. The number of powder cylinder outlet 201, front powder outlet channel 311, rear powder outlet channel 312, first cleaning air input channel 313 and second cleaning air input channel 314 corresponds to the number of output powder pumps 320, thereby forming multiple color powder outputs.

[0044] In this embodiment, the cleaning gas supply device is connected to the powder outlet 310 via a first pipe 410 and a second pipe 420, and compressed gas is supplied to the first cleaning gas input channel 313 and the second cleaning gas input channel 314 via the first pipe 410 and the second pipe 420, respectively. Specifically, the cleaning gas supply device can be a gas source that stores compressed gas, or a gas supply pipeline that can be connected to an external compressed gas source.

[0045] In this embodiment, the powder cartridge 200 and the powder outlet 310 are connected by a third pipe 430, and the powder outlet 201 of the powder cartridge is connected to the front powder outlet channel 311 through the third pipe 430. In this embodiment, the input end of the output powder pump 320 is connected to the powder outlet 310, and the input port of the output powder pump 320 is connected to the rear powder outlet channel 312. The output end of the output powder pump 320 is connected to a fourth pipe 440, and the color powder is output externally through the fourth pipe 440.

[0046] In this embodiment, the on / off control valve is a pinch valve, which connects the front powder outlet channel 311 and the rear powder outlet channel 312. The pinch valve is simple in structure and easy to implement. It is conceivable that the on / off control valve is not limited to a pinch valve; for example, it could be an electrically or pneumatically controlled valve used to control the connection or disconnection between channels. The specific configuration can be tailored to the actual situation.

[0047] In this embodiment, a first one-way valve and a second one-way valve are also included. The first one-way valve is configured to restrict the flow of gas from the front powder outlet channel 311 through the first cleaning gas input channel 313 to the cleaning gas supply device. The second one-way valve is configured to restrict the flow of gas from the rear powder outlet channel 312 through the second cleaning gas input channel 314 to the cleaning gas supply device. By setting the first one-way valve and the second one-way valve, the escape of pigment powder through the first cleaning gas input channel 313 and the second cleaning gas input channel 314 can be prevented, thus preventing contamination. Specifically, the first one-way valve and the second one-way valve can be set in the first cleaning gas input channel 313 and the second cleaning gas input channel 314, or at the point where the first cleaning gas input channel 313 and the second cleaning gas input channel 314 are interconnected with the front powder outlet channel 311 and the rear powder outlet channel 312, or in the first pipeline 410 and the second pipeline 420. The specific configuration can be adjusted according to the actual situation.

[0048] Reference Figures 6 to 7 The machine body 100 is provided with a powder extraction pipe 110 and an air receiving seat 120. The air receiving seat 120 is provided with a vertically extending connecting channel 121, which is communicatively connected to the powder extraction pipe 110. The lower end of the connecting channel 121 has an opening. A powder cylinder 200 is located below the air receiving seat 120. The powder cylinder 200 includes a cylinder body 210 and a cylinder cover 220. The cylinder body 210 is located on the machine body 100, and the cylinder cover 220 is located on the upper side of the cylinder body 210 and is used to enclose the cylinder body 210 to form a powder receiving cavity. The cylinder cover 220 can move up and down relative to the cylinder body 210. The cylinder cover 220 is provided with a vertical... An upwardly extending insertion portion 221 is provided with a hollow channel 2211. The lower end of the hollow channel 2211 connects to the inner side of the cylinder cover 220. The insertion portion 221 passes through the opening at the lower end of the connecting channel 121 and is inserted into the connecting channel 121. The insertion portion 221 is provided with a connecting port 2212 connecting the connecting channel 121 and the hollow channel 2211. The fuselage 100 is provided with a cylinder cover driving assembly 130. The cylinder cover driving assembly 130 is connected to the cylinder cover 220 and can drive the cylinder cover 220 to move up and down. When the cylinder cover 220 moves up and down, the connecting port 2212 moves within the connecting channel 121. It can be understood that the vertical direction is the up and down direction shown in the attached figure.

[0049] When it is necessary to clean the pigment powder inside the toner cartridge 200, the pigment powder can be drawn out by connecting the toner extraction pipe 110 to a toner extraction device. The pigment powder inside the toner cartridge 200 can be extracted through the connecting channel 121 of the air inlet 120 and the hollow channel 2211 of the insertion part 221. For more detailed cleaning or maintenance of the inside of the toner cartridge 200, the cartridge cover 220 can be directly driven upward by the cartridge cover drive assembly 130. The hollow channel 2211 and the connecting channel 121 are kept connected when the cartridge cover 220 moves up and down, without the need for additional piping operations. The opening and closing of the cartridge cover 220 is relatively simple.

[0050] In this embodiment, the cap drive assembly 130 includes two cylinders 131, which are vertically mounted on the machine body 100. The cap 220 has connecting portions 222 on both sides of the insertion portion 221, corresponding to the cylinders 131. The piston rods of the cylinders 131 are connected to the corresponding connecting portions 222. This structure provides smooth operation and is simple and easy to implement. It is conceivable that the cap drive assembly 130 is not limited to the above structure; for example, it can also use a motor in conjunction with a rack and pinion or a linear motor to drive the cap 220 up and down. In the art, there are many structures for driving components up and down, and those skilled in the art can configure them according to actual conditions.

[0051] In this embodiment, the gas inlet seat 120 is provided with a guide assembly, which includes a pair of left and right limiting rods 140 and a pair of front and rear limiting rods 150. The pair of left and right limiting rods 140 are located on the left and right sides of the insertion part 221, respectively, and the pair of front and rear limiting rods 150 are located on the front and rear sides of the insertion part 221, respectively. The insertion part 221 is adapted to be movably inserted between the pair of left and right limiting rods 140 and the pair of front and rear limiting rods 150. Through the above structure, the insertion part 221 can be guided to move up and down, improving the stability of the cylinder cover 220. In addition, the cylinder cover 220 also forms a structure that can move up and down through the above structure. Of course, it is conceivable that the cylinder cover 220 can also achieve up and down movement relative to the cylinder cover 220 through other means, such as through the cooperation of guide rods and sliding sleeves.

[0052] In this embodiment, two pairs of left and right limiting rods 140 and two pairs of front and rear limiting rods 150 are provided. Each pair of left and right limiting rods 140 and front and rear limiting rods 150 are arranged vertically, thereby making the movement of the insertion part 221 more stable. It is conceivable that more than two pairs of front and rear limiting rods 150 and left and right limiting rods 140 can be provided, and the specific configuration can be made according to the actual situation. Furthermore, each pair of left and right limiting rods 140 and front and rear limiting rods 150 can be arranged alternately (that is, in the vertical direction, they are arranged in an alternating manner of "left and right limiting rods 140 - front and rear limiting rods 150 - left and right limiting rods 140 - front and rear limiting rods 150").

[0053] In this embodiment, the left and right limiting rods 140 and the front and rear limiting rods 150 are all provided with rotatable rollers. The left and right limiting rods 140 and the front and rear limiting rods 150 cooperate with the insertion part 221 through the rollers, so that the movement of the insertion part 221 is smoother.

[0054] Reference Figure 1 , Figures 8 to 10 In this embodiment, an input powder pump assembly for feeding powder into the powder cartridge 200 is also included. The input powder pump assembly includes a suction rod 510 and an input powder pump 520. The suction rod 510 has a powder extraction channel along its length, and one end of the suction rod 510 has a suction port 511 communicating with the powder extraction channel. The input powder pump 520 is mounted on the machine body 100, and the other end of the suction rod 510 is connected to the input powder pump 520 via a flexible conduit. The input port of the input powder pump 520 is communicatively connected to the powder extraction channel, and the output port of the input powder pump 520 is communicatively connected to the powder receiving chamber. In the embodiment shown in the accompanying drawings, the flexible conduit is not shown. Using this structure, one end of the suction rod 510 can be easily inserted into a powder supply structure, such as a powder supply cart or powder box, thereby providing color powder to the powder cartridge 200.

[0055] In this embodiment, the body 100 is provided with a suction rod bracket 160, which has a mounting hole 161 for vertically inserting and mounting a suction rod 510. The suction rod 510 is detachably inserted into the mounting hole 161. With the above structure, the suction rod 510 can be easily fixed to stably draw out the color powder.

[0056] In this embodiment, the machine body 100 is provided with a powder bag hopper 170, which has a conical cavity 171. The upper end of the conical cavity 171 is the larger end and has an opening. The position of the suction rod bracket 160 is adjustable. The suction rod bracket 160 can be adjusted to a position where the mounting hole 161 is vertically aligned with the smaller end of the conical cavity 171, and can also be adjusted to a position where the mounting hole 161 is horizontally offset from the conical cavity 171. With the above structure, during small-batch production, a powder bag containing color powder can be placed in the conical cavity 171, the suction rod bracket 160 can be adjusted to a position where the mounting hole 161 is vertically aligned with the smaller end of the conical cavity 171, and then the suction rod 510 can be inserted into the mounting hole 161 and inserted into the powder bag to draw out the color powder. Because the mounting hole 161 and the smaller end of the conical cavity 171 are aligned vertically, the suction rod 510 can be inserted to the bottom of the toner bag for easy extraction of toner. If a large amount of toner is needed, the position of the suction rod bracket 160 can be adjusted to allow the suction rod 510 to be used to extract toner from other locations, such as toner carts or toner boxes.

[0057] In this embodiment, the suction rod bracket 160 is pivotally connected to the body 100 via a vertically arranged pivot shaft, allowing it to rotate in the horizontal plane to adjust its position. It is conceivable that multiple mounting portions for mounting the suction rod bracket 160 could be provided on the body 100, with the suction rod bracket 160 having different positions as described above when mounted on different mounting portions.

[0058] Reference Figure 11 and Figure 12 In this embodiment, the machine body 100 is provided with a powder cleaning tube 180, one end of which is provided with an insertion port 181. The interior of the powder cleaning tube 180 is connected to the powder extraction tube 110. The suction rod 510 is adapted to pass through the insertion port 181 and be inserted into the interior of the powder cleaning tube 180. With the above structure, after the powder extraction tube 110 is connected to an external powder extraction device, the suction rod 510 can be inserted into the interior of the powder cleaning tube 180, and the color powder on the suction rod 510 can be sucked out by negative pressure, making cleaning convenient.

[0059] In this embodiment, the other end of the suction rod 510 is provided with an adapter 512, which is adapted to the size of the cavity of the powder cleaning tube 180. One end of the adapter 512 is provided with a boss 513. When the suction rod 510 is inserted into the powder cleaning tube 180, the adapter 512 can be inserted into the powder cleaning tube 180, and one side of the boss 513 can abut against the periphery of the insertion port 181 of the powder cleaning tube 180. With the above structure, the adapter 512 can make the position of the suction rod 510 stable when inserted into the powder cleaning tube 180, while the boss 513 can limit the suction rod 510 and reduce air leakage. In this embodiment, the other side of the boss 513 is provided with a connecting pipe 514. One end of the flexible pipe is connected to the connecting pipe 514, and the other end is connected to the input end of the input powder pump 520. In this embodiment, the mounting hole 161 is adapted to the size of the adapter 512, so that when the suction rod 510 is inserted into the mounting hole 161, the position of the suction rod 510 can be stabilized by the cooperation between the adapter 512 and the mounting hole 161. At the same time, the suction rod 510 can also be limited in depth when inserted into the mounting hole 161 by the boss 513.

[0060] In this embodiment, a snap-fit ​​member 182 is pivotally connected to one end of the cleaning tube 180, which has an insertion port 181. The snap-fit ​​member 182 has a baffle portion 1821 with a slot 1822 that matches the connecting tube portion 514. The snap-fit ​​member 182 is rotatable so that the baffle portion 1821 is positioned on the other side of the boss portion 513 and can be moved away from the other side of the boss portion 513. When the baffle portion 1821 is positioned on the other side of the boss portion 513, the connecting tube portion 514 is engaged with the slot 1822. With the above structure, when the suction rod 510 is inserted into the cleaning tube 180, the connecting tube portion 514 can be engaged by the slot 1822 of the snap-fit ​​member 182, and the baffle portion 1821 stops the suction rod 510 from coming out. In this embodiment, the snap-fit ​​component 182 is a U-shaped component with both ends pivotally connected to the powder cleaning pipe 180, thereby allowing the snap-fit ​​position and the clearance position to be rotated and switched.

[0061] Reference Figure 1 and Figure 13In this embodiment, the powder extraction pipeline 110 provided in the machine body 100 includes a main pipe 111, a first branch pipe 112, a second branch pipe 113, a third branch pipe 114, a fourth branch pipe 115, and a fifth branch pipe 116. The main pipe 111 is used to connect to an external powder extraction device, and the first to fifth branch pipes are connected to the main pipe 111. The connection channel 121 of the air inlet 120 is connected to the main pipe 111 through the first branch pipe 112, and a control valve is provided on the first branch pipe 112 to control the on / off state. The machine body 100 is divided into an upper chamber 101, a middle chamber 102, and a lower chamber 103. The air inlet 120, the cylinder cover 220, and the output powder pump 320 are located in the upper chamber 101, the cylinder body 210 and the powder outlet seat 310 are located in the middle chamber 102, and the lower chamber 103 can be used to accommodate a powder cart or powder box. The lower end of the second branch pipe 113 is connected to the lower chamber 103; the third branch pipe 114 is connected to the upper chamber 101; the fourth branch pipe 115 is connected to the middle chamber; and the fifth branch pipe 116 is connected to the cleaning pipe 180. The third branch pipe 114, the fourth branch pipe 115, and the fifth branch pipe 116 are connected to the main pipe 111 via the second branch pipe 113. Control valves can be installed on each branch pipe as needed to control its on / off state. Through the above arrangement, air can be drawn from the upper chamber 101, the middle chamber 102, and the lower chamber 103 to clean any residual color powder or dust remaining in these chambers.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A powder supply center, characterized in that, include: fuselage (100); A powder cylinder (200) is disposed on the machine body (100). The powder cylinder (200) is provided with a powder-containing cavity and a powder outlet (201) communicating with the powder-containing cavity. The output powder pump assembly (300) includes a powder outlet seat (310) and an output powder pump (320). The powder outlet seat (310) is disposed on the machine body (100). The powder outlet seat (310) is provided with a front powder outlet channel (311), a rear powder outlet channel (312), a first cleaning air input channel (313), and a second cleaning air input channel (314). The front powder outlet channel (311) is communicatively connected to the powder outlet (201) of the powder cylinder. The rear powder outlet channel (312) is communicatively connected to the powder outlet (201) of the powder cylinder. 12) The output powder pump (320) is connected to the powder outlet seat (310) and can extract powder from the powder container and output it to the outside through the powder outlet channel (311) and the powder outlet channel (312). The first cleaning air input channel (313) is connected to the powder outlet channel (311) and the second cleaning air input channel (314) is connected to the powder outlet channel (312). The cleaning gas supply device is configured to supply compressed gas to the first cleaning gas input channel (313) and the second cleaning gas input channel (314); An on / off control valve is provided on the powder outlet seat (310), and the on / off control valve is configured to control the connection and disconnection between the rear powder outlet channel (312) and the front powder outlet channel (311); The machine body (100) is provided with a powder extraction pipe (110) and an air receiving seat (120). The air receiving seat (120) is provided with a vertically extending connecting channel (121). The connecting channel (121) is connected to the powder extraction pipe (110). The lower end of the connecting channel (121) has an opening. The powder cylinder (200) is located below the air receiving seat (120). The powder cylinder (200) includes a cylinder body (210) and a cylinder cover (220). The cylinder body (210) is located on the machine body (100). The cylinder cover (220) is located on the upper side of the cylinder body (210) and is used to enclose the powder-containing cavity with the cylinder body (210). The cylinder cover (220) can move up and down relative to the cylinder body (210). The cylinder cover (220) is provided with A vertically extending insertion part (221) is provided, the insertion part (221) is provided with a hollow channel (2211), the lower end of the hollow channel (2211) is connected to the inner side of the cylinder cover (220), the insertion part (221) passes through the opening at the lower end of the connecting channel (121) and is inserted into the connecting channel (121), the insertion part (221) is provided with a connecting port (2212) connecting the connecting channel (121) and the hollow channel (2211), the fuselage (100) is provided with a cylinder cover driving assembly (130), the cylinder cover driving assembly (130) is connected to the cylinder cover (220) and can drive the cylinder cover (220) to move up and down, when the cylinder cover (220) moves up and down, the connecting port (2212) moves in the connecting channel (121).

2. The powder supply center according to claim 1, characterized in that: The on / off control valve is a pinch valve, and the front powder outlet channel (311) and the rear powder outlet channel (312) are connected through the pinch valve.

3. The powder supply center according to claim 1 or 2, characterized in that: It also includes a first check valve and a second check valve. The first check valve is configured to restrict the gas from the front powder outlet channel (311) from flowing to the cleaning gas supply device through the first cleaning gas input channel (313). The second check valve is configured to restrict the gas from the rear powder outlet channel (312) from flowing to the cleaning gas supply device through the second cleaning gas input channel (314).

4. The powder supply center according to claim 1, characterized in that: The cylinder cover drive assembly (130) includes two cylinders (131), the cylinders (131) are vertically arranged on the body (100), and the cylinder cover (220) has connecting parts (222) on both sides of the insertion part (221) that correspond one-to-one with the cylinders (131). The piston rod of the cylinder (131) is connected to the corresponding connecting part (222).

5. The powder supply center according to claim 1, characterized in that: The air inlet seat (120) is provided with a guide assembly, which includes a pair of left and right limiting rods (140) and a pair of front and rear limiting rods (150). The pair of left and right limiting rods (140) are located on the left and right sides of the insertion part (221), and the pair of front and rear limiting rods (150) are located on the front and rear sides of the insertion part (221). The insertion part (221) is adapted to be movably inserted between the pair of left and right limiting rods (140) and the pair of front and rear limiting rods (150).

6. The powder supply center according to claim 5, characterized in that: At least two pairs of left and right limiting rods (140) and at least two pairs of front and rear limiting rods (150) are provided, and each pair of left and right limiting rods (140) and front and rear limiting rods (150) are arranged alternately in the vertical direction.

7. The powder supply center according to claim 5, characterized in that: The left and right limiting rods (140) and the front and rear limiting rods (150) are each provided with rotatable rollers, and the left and right limiting rods (140) and the front and rear limiting rods (150) cooperate with the plug-in part (221) through the rollers.

8. The powder supply center according to claim 1, characterized in that: It also includes an input powder pump assembly for inputting powder into the powder cylinder (200). The input powder pump assembly includes a suction rod (510) and an input powder pump (520). The suction rod (510) has a powder extraction channel along its length. One end of the suction rod (510) is provided with a suction port (511) communicating with the powder extraction channel. The input powder pump (520) is disposed on the machine body (100). The other end of the suction rod (510) is connected to the input powder pump (520) through a flexible pipeline. The input port of the input powder pump (520) is configured to communicate with the powder extraction channel, and the output port of the input powder pump (520) is configured to communicate with the powder receiving chamber.

9. The powder supply center according to claim 8, characterized in that, The machine body (100) is provided with a suction rod bracket (160), the suction rod bracket (160) is provided with a mounting hole (161) for vertically inserting and installing the suction rod (510), the suction rod (510) is detachably inserted into the mounting hole (161); the machine body (100) is provided with a powder bag hopper (170), the powder bag hopper (170) is provided with a conical cavity (171), the upper end of the conical cavity (171) is the larger end and the upper end of the conical cavity (171) is provided with an opening, the mounting hole (161) of the suction rod bracket (160) can be vertically aligned with the smaller end of the conical cavity (171).

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