A weighing type color powder mixer

Abstract

The invention discloses a weighing type color powder mixer, which belongs to the technical field of color powder mixing, and comprises a color powder bin, a mixing box and two hoppers, and is characterized in that the two hoppers are both connected with the mixing box, a feeding mechanism is arranged between the color powder bin and the mixing box, and the feeding mechanism consists of a frame, a feeding pipe, a feeding motor, a powder spoon and a sleeve, the frame connects the color powder bin and the mixing box, the feeding pipe is fixed on the frame and connected with the color powder bin, the feeding motor is installed in the frame, the output shaft of the feeding motor is connected with the powder spoon, and the powder spoon is located below the feeding pipe, and a weighing sensor is installed in the powder spoon; the invention can accurately control the feeding amount of the color powder, does not need to be connected with the melt signal of the injection molding machine, and the debugging is simple and fast. When the powder spoon is turned over, it can also drive the force block to move back and forth continuously to knock the powder spoon, thereby accelerating the feeding of the color powder and avoiding the color powder adhering to the powder spoon and affecting the accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of toner mixing, and in particular to a weighing type toner mixer. Background Art

[0002] At present, in the plastics industry such as injection molding, bottle blowing, blow molding, film blowing, and extrusion, raw materials and color powder need to be mixed before they can be put into use. The existing equipment on the market uses the same sol feeding method as the traditional masterbatch machine, connecting the injection molding machine's melt valve to test feed until the color difference is adjusted to a small difference. The powder counting part uses the gear rotation method to stir the powder for molding. These models use a mechanical conveying method, using the motor speed to control the color powder delivery amount. This method results in unstable feeding amount each time, low precision, and easy color difference in the product. It cannot meet the application scenarios of customers with high requirements for product color. In addition, the on-site debugging of the equipment is cumbersome and needs to be connected with the injection molding machine's melt signal. Summary of the invention

[0003] The purpose of the present invention is to provide a weighing type color powder mixer to solve the following technical problems: the existing equipment has unstable feeding amount each time, low precision, easy color difference of products, and cumbersome debugging.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A weighing type color powder mixer, comprising a color powder bin, a mixing box and two hoppers, characterized in that the two hoppers are both connected to the mixing box, a feeding mechanism is arranged between the color powder bin and the mixing box, the feeding mechanism is composed of a frame, a feeding pipe, a feeding motor, a powder spoon and a sleeve, the frame is connected to the color powder bin and the mixing box, the feeding pipe is fixed on the frame and connected to the color powder bin, the feeding motor is installed in the frame, the output shaft of the feeding motor is connected to the powder spoon, and the powder spoon is located below the feeding pipe, and a weighing sensor is installed in the powder spoon;

[0006] The sleeve is fixed on the side wall of the frame, and an opening is provided on the side of the sleeve facing the powder scoop, a piston block is movably provided in the sleeve, one side of the piston block is connected to a spring, and the other side is connected to a force rod, a force block is fixed to the end of the force rod away from the piston block, and a plurality of push blocks are evenly provided on the outer wall of the powder scoop.

[0007] As a further solution of the present invention: a screw feeder is arranged between the hopper and the mixing box.

[0008] As a further solution of the present invention: a stirring bin and a material storage bin are arranged in the mixing box, the material storage bin is located below the stirring bin, a gate is arranged between the stirring bin and the material storage bin, and a stirring assembly is arranged in the stirring bin.

[0009] As a further solution of the present invention: a first circular hole plate is fixed in the sleeve, a blocking rod is fixed on the side of the piston block close to the first circular hole plate, the blocking rod matches the circular hole size of the first circular hole plate, the spring is located between the first circular hole plate and the piston block, one end of the spring is connected to the first circular hole plate, and the other end is connected to the piston block.

[0010] As a further solution of the present invention: the sleeve is connected to two air inlet pipes, an air inlet assembly is arranged in the air inlet pipe, a connecting hole is provided on the blocking rod, the force-bearing block is a semicircular middle structure, and a plurality of air outlet holes are provided on the force-bearing block, two air outlet pipes are connected to the force-bearing block, and the air outlet pipes are communicated with the sleeve.

[0011] As a further solution of the present invention: the air intake assembly includes a second circular hole plate fixed in the air intake pipe, the second circular hole plate is connected to a side facing the sleeve with an elastic rope, and one end of the elastic rope is connected to a blocking ball.

[0012] As a further solution of the present invention: the length of the communicating hole is smaller than the distance between the first circular hole plate and the piston block.

[0013] Beneficial effects of the present invention:

[0014] (1) The present invention provides a feeding structure, in which a powder spoon is provided for receiving color powder, and a weighing sensor is installed in the powder spoon, so that the color powder precision can be accurately controlled. The powder spoon can be turned over to send the color powder into the mixing box to be mixed with the raw material, and there is no need to connect with the melt signal of the injection molding machine, so the debugging is simple and fast. A sleeve is also provided on the frame, and when the powder spoon is turned over, the force block can be driven to move back and forth continuously to knock the powder spoon, thereby accelerating the feeding of the color powder and preventing the color powder from adhering to the powder spoon and affecting the precision;

[0015] (2) The present invention divides the mixing box into a mixing bin and a storage bin. The mixing bin is provided with a mixing assembly, which can fully mix the color powder and the raw material. After the mixing is completed, the gate is opened to discharge the material. After the discharge is completed, the subsequent batches of materials can be mixed quickly, thereby improving the processing efficiency;

[0016] (3) The present invention provides a first circular hole plate, a blocking rod, a spring, an air inlet pipe, an air inlet assembly and an air outlet pipe. The powder spoon turns over to drive the force block to move back and forth continuously. Under the action of the force rod and the spring, the piston block moves back and forth synchronously. During the movement of the piston block, the inside of the sleeve is continuously pressurized. When the powder spoon turns over more than 180°, the powder spoon no longer blocks the force block. Under the action of air pressure, the piston block, the force rod and the force block move toward the inside of the powder spoon. The internal gas enters the force block through the air outlet pipe and is then blown into the powder spoon through the air outlet, blowing the color powder on the inner wall of the powder spoon off, thereby further improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the first perspective structure of the present invention as a whole;

[0019] Figure 2 It is a second perspective structural schematic diagram of the present invention as a whole;

[0020] Figure 3 It is a schematic diagram of the structure of the mixing bin and the storage bin of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the frame of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the sleeve and the powder scoop of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the sleeve of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the first circular hole plate and the piston block of the present invention;

[0025] Figure 8 It is a front view of the internal structure of the sleeve of the present invention;

[0026] Fig. 9 It is a schematic diagram of the internal structure of the air intake pipe of the present invention.

[0027] In the figure: 1. toner bin; 2. mixing box; 201. stirring bin; 202. storage bin; 203. stirring assembly; 3. unloading mechanism; 301. frame; 302. powder spoon; 303. sleeve; 304. push block; 305. piston block; 306. spring; 307. force rod; 308. force block; 309. first circular hole plate; 310. air outlet pipe; 311. air outlet hole; 312. air inlet pipe; 313. blocking rod; 314. connecting hole; 315. second circular hole plate; 316. elastic rope; 317. blocking ball; 4. hopper; 5. screw feeder.

[0028] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-6 As shown, the present invention is a weighing type color powder mixer, including a color powder bin 1, a mixing box 2 and two hoppers 4, characterized in that the two hoppers 4 are both connected to the mixing box 2, a feeding mechanism 3 is arranged between the color powder bin 1 and the mixing box 2, and the feeding mechanism 3 is composed of a frame 301, a feeding pipe, a feeding motor, a powder spoon 302 and a sleeve 303. The frame 301 connects the color powder bin 1 and the mixing box 2, the feeding pipe is fixed on the frame 301 and is connected to the color powder bin 1, the feeding motor is installed in the frame 301, the output shaft of the feeding motor is connected to the powder spoon 302, and the powder spoon 302 is located in the Below the feeding tube, a weighing sensor is installed in the powder spoon 302; the sleeve 303 is fixed on the side wall of the frame 301, and the sleeve 303 is provided with an opening on the side facing the powder spoon 302, a piston block 305 is movably provided in the sleeve 303, one side of the piston block 305 is connected to a spring 306, and the other side is connected to a force rod 307, and a force block 308 is fixed to the end of the force rod 307 away from the piston block 305, a plurality of push blocks 304 are evenly arranged on the outer wall of the powder spoon 302, a screw feeder 5 is provided between the hopper 4 and the mixing box 2, and a stirring device is provided in the mixing box 2 The mixing bin 201 and the material storage bin 202 are arranged below the mixing bin 201, and a gate is arranged between the mixing bin 201 and the material storage bin 202. The mixing bin 201 is provided with a mixing assembly 203. The raw materials are placed in the two hoppers 4, and the raw materials are transported to the mixing bin 201 of the mixing box 2 through the screw feeder 5. A powder feeding motor is arranged in the toner bin 1. After the toner ratio is input, the weight of the required toner is automatically obtained according to the "single mixing amount". The speed of the powder feeding motor can be set as needed. The toner is automatically weighed after reaching the powder spoon 302, and the powder feeding is turned off after reaching the required weight. The motor can be used, and then the powder spoon 302 is driven by the feeding motor to rotate to feed the color powder into the mixing bin 201, and the stirring component 203 is driven to rotate to mix the materials. After the mixing is completed, the gate at the bottom of the mixing bin 201 is opened to allow the materials to enter the storage bin 202. When the powder spoon 302 rotates, the multiple push blocks 304 on the outer wall of the powder spoon 302 are constantly in contact with the force block 308. With the spring 306, the force block 308 will continuously move back and forth to hit the powder spoon 302. On the one hand, it speeds up the feeding of the color powder, and on the other hand, it prevents the color powder from adhering to the powder spoon 302 and affecting the accuracy.

[0031] See also Figure 6-9A first circular hole plate 309 is fixed in the sleeve 303, a blocking rod 313 is fixed on the side of the piston block 305 close to the first circular hole plate 309, the blocking rod 313 matches the circular hole size of the first circular hole plate 309, a spring 306 is located between the first circular hole plate 309 and the piston block 305, one end of the spring 306 is connected to the first circular hole plate 309, and the other end is connected to the piston block 305, the sleeve 303 is connected to two air inlet pipes 312, the air inlet pipes 312 are provided with an air inlet assembly, a connecting hole 314 is provided on the blocking rod 313, the force block 308 is a semicircular middle structure, and the force block 308 is provided with a connecting hole 314. A plurality of air outlet holes 311 are provided, two air outlet pipes 310 are connected to the force block 308, and the air outlet pipes 310 are communicated with the sleeve 303, and the air intake assembly includes a second circular hole plate 315 fixed in the air intake pipe 312, and the second circular hole plate 315 is connected to an elastic rope 316 on the side facing the sleeve 303, and a blocking ball 317 is connected to one end of the elastic rope 316, and the length of the connecting hole 314 is less than the distance between the first circular hole plate 309 and the piston block 305; the powder spoon 302 turns over to drive the force block 308 to move back and forth continuously, and under the action of the force rod 307 and the spring 306, the piston block 305 reciprocates synchronously When the piston block 305 moves toward the first orifice plate 309, it will first squeeze the air between the first orifice plate 309 and the piston block 305. When the connecting hole 314 on the blocking rod 313 passes over the first orifice plate 309, the squeezed air enters the left side of the first orifice plate 309. When the piston block 305 is reset, the blocking rod 313 will block the first orifice plate 309, and the piston block 305 will continue to move to the right, at this time, negative pressure is generated, and external air enters the sleeve 303 through the air inlet pipe 312. This process is repeated many times, and the air pressure between the bottom wall of the sleeve 303 and the first orifice plate 309 will become increasingly negative. When the powder scoop 302 is turned over by more than 180°, the powder scoop 302 no longer blocks the force block 308. Under the action of air pressure, the piston block 305, the force rod 307 and the force block 308 move toward the inside of the powder scoop 302, the spring 306 is stretched, and the blocking rod 313 is separated from the first circular hole plate 309. The piston block 305 also leaves the connection between the sleeve 303 and the air outlet pipe 310. The internal gas of the sleeve 303 enters the force block 308 through the air outlet pipe 310, and then blows into the powder scoop 302 through the air outlet hole 311, blowing off the color powder that may adhere to the inner wall of the powder scoop 302, thereby further improving the measurement accuracy.

[0032] The working principle of the present invention is as follows: raw materials are placed in two hoppers 4, and the raw materials are transported to the mixing chamber 201 of the mixing box 2 through the screw feeder 5. A powder feeding motor is provided in the toner chamber 1. After the toner ratio is input, the weight of the required toner is automatically obtained according to the "single mixing amount". The speed of the powder feeding motor can be set as required. The toner is automatically weighed after reaching the powder spoon 302. When the required weight is reached, the powder feeding motor can be turned off. Then, the powder spoon 302 is driven by the feeding motor to rotate to feed the toner into the mixing chamber 201. In the mixing bin 201, the stirring assembly 203 is driven to rotate to mix the materials. After the mixing is completed, the gate at the bottom of the mixing bin 201 is opened to allow the materials to enter the storage bin 202. When the powder spoon 302 rotates, the multiple push blocks 304 on the outer wall of the powder spoon 302 are constantly in contact with the force block 308. With the spring 306, the force block 308 will continuously move back and forth to hit the powder spoon 302, which, on the one hand, speeds up the feeding of the color powder, and on the other hand, prevents the color powder from adhering to the powder spoon 302 and affecting the accuracy.

[0033] As the powder spoon 302 drives the force block 308 to move back and forth continuously during the flipping process, the piston block 305 moves back and forth synchronously under the action of the force rod 307 and the spring 306. When the piston block 305 moves toward the first circular orifice plate 309, it will first squeeze the air between the first circular orifice plate 309 and the piston block 305. When the connecting hole 314 on the blocking rod 313 passes over the first circular orifice plate 309, the squeezed air enters the left side of the first circular orifice plate 309. When the piston block 305 is reset, the blocking rod 313 will block the first circular orifice plate 309, and the piston block 305 will continue to move to the right, at this time, negative pressure is generated, and external air enters the sleeve 303 through the air inlet pipe 312. The setting of the air inlet assembly makes the air inlet pipe 312 only able to take in air but not to exhaust air. This process is repeated many times (the piston block 305 will not separate from the connection between the sleeve 303 and the air outlet pipe 310 during the reciprocating movement, so the gas does not The powder scoop 302 will be discharged), the air pressure on the bottom wall of the sleeve 303 and the first circular hole plate 309 will become larger and larger. When the powder scoop 302 is turned over more than 180 degrees, the powder scoop 302 no longer blocks the force block 308. Under the action of the air pressure, the piston block 305, the force rod 307 and the force block 308 move toward the powder scoop 302, the spring 306 is stretched, and the blocking rod 313 is separated from the first circular hole plate 309. The piston block 305 also leaves the sleeve 303 and the air outlet pipe 310. At the connection point, the internal gas of the sleeve 303 enters the force block 308 through the air outlet pipe 310, and then blows into the powder spoon 302 through the air outlet hole 311, blowing off the color powder that may adhere to the inner wall of the powder spoon 302, further improving the measurement accuracy. After the gas is gradually discharged, the air pressure in the sleeve 303 will gradually return to normal, and the spring 306 drives the piston block 305, the force rod 307 and the force block 308 to reset, so it will not affect the normal rotation of the powder spoon 302.

[0034] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A weighing type toner mixer, comprising a toner bin (1), a mixing box (2) and two hoppers (4), characterized in that: The two hoppers (4) are both connected to the mixing box (2); a feeding mechanism (3) is provided between the toner bin (1) and the mixing box (2); the feeding mechanism (3) is composed of a frame (301), a feeding pipe, a feeding motor, a powder spoon (302) and a sleeve (303); the frame (301) is connected to the toner bin (1) and the mixing box (2); the feeding pipe is fixed on the frame (301) and is connected to the toner bin (1); the feeding motor is installed in the frame (301); the output shaft of the feeding motor is connected to the powder spoon (302); the powder spoon (302) is located below the feeding pipe; a weighing sensor is installed in the powder spoon (302); The sleeve (303) is fixed on the side wall of the frame (301), and an opening is provided on the side of the sleeve (303) facing the powder scoop (302). A piston block (305) is movably provided in the sleeve (303). One side of the piston block (305) is connected to a spring (306), and the other side is connected to a force-bearing rod (307). A force-bearing block (308) is fixed to the end of the force-bearing rod (307) away from the piston block (305). A plurality of push blocks (304) are evenly provided on the outer wall of the powder scoop (302); A first circular hole plate (309) is fixed in the sleeve (303), a blocking rod (313) is fixed on the side of the piston block (305) close to the first circular hole plate (309), the blocking rod (313) matches the size of the circular hole of the first circular hole plate (309), the spring (306) is located between the first circular hole plate (309) and the piston block (305), one end of the spring (306) is connected to the first circular hole plate (309), and the other end is connected to the piston block (305); The sleeve (303) is connected to two air inlet pipes (312), an air inlet assembly is arranged inside the air inlet pipe (312), a connecting hole (314) is provided on the blocking rod (313), the force-bearing block (308) is a semicircular intermediate structure, and a plurality of air outlet holes (311) are provided on the force-bearing block (308), two air outlet pipes (310) are connected to the force-bearing block (308), and the air outlet pipes (310) are in communication with the sleeve (303).

2. A weighing type toner mixer according to claim 1, characterized in that: A screw feeder (5) is provided between the hopper (4) and the mixing box (2).

3. A weighing type toner mixer according to claim 1, characterized in that: The mixing box (2) is provided with a stirring bin (201) and a material storage bin (202), the material storage bin (202) is located below the stirring bin (201), and a gate is provided between the stirring bin (201) and the material storage bin (202), and a stirring assembly (203) is provided in the stirring bin (201).

4. A weighing type toner mixer according to claim 1, characterized in that: The air intake assembly comprises a second circular hole plate (315) fixed in the air intake pipe (312); a side of the second circular hole plate (315) facing the sleeve (303) is connected to an elastic rope (316); one end of the elastic rope (316) is connected to a blocking ball (317).

5. A weighing type toner mixer according to claim 1, characterized in that: The length of the communicating hole (314) is smaller than the distance between the first circular hole plate (309) and the piston block (305).

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