Relay shell injection molding particle mixing machine

Abstract

The invention discloses a relay shell injection molding particle mixing machine, and relates to the technical field of mixing machines. The side sealing unit comprises a baffle plate, the baffle plate is plugged in the first window, and the inner wall of the baffle plate is provided with an exhaust hole for cleaning residual dust in the mixing box; the medium guiding and conveying unit comprises an outer box body, the outer box body is installed on the outer wall of the second window in a butt joint mode, a rectangular frame is arranged at the inner end of the interior of the outer box body, a first enclosure assembly is installed in the rectangular frame, powder bag storage assemblies are symmetrically arranged on the outer wall of the rectangular frame, and a middle guiding and conveying cavity is formed between the two powder bag storage assemblies; a second enclosure assembly is mounted on the outer side of the middle guide cavity; a dust collection unit; an air supply unit; in the mixing stage, hot air based on waste heat of the injection molding machine can be input into the mixing box, and waste heat treatment is conducted on injection molding particles; meanwhile, the powder bag can be flapped intermittently, so that the dust escapes into the mixing box.

Description

Technical Field

[0001] The present invention relates to the technical field of mixers, and specifically to an injection molding granule mixer for relay housings. Background Art

[0002] As a key structural component of a relay, the relay housing is usually produced by an injection molding process. Its technological process includes: putting various plastic granule raw materials (such as polypropylene, nylon, etc.) into a mixing box in proportion for mixing, then adding powder additives (such as antioxidants, talcum powder, etc.), and finally sending the mixture into an injection molding machine for heating and melting to form a shape. However, the existing mixing process has the following technical defects: 1. In the prior art, plastic granules are only mechanically stirred and mixed in the mixing box, and the mixed granules are still at room temperature. After being directly put into the injection molding machine, it takes some time to heat them to the melting temperature. This not only prolongs the injection molding cycle but also causes the waste heat of the screw and barrel of the injection molding machine to be not effectively utilized, resulting in energy waste.

[0003] 2. In the mixing stage, powder additives need to be evenly mixed with plastic granules to improve the material properties. However, in the existing process, powder additives are mostly directly poured from the inlet of the mixing box by manual or mechanical devices. This method is prone to forming agglomerates (especially ultrafine powders with a particle size less than 50 μm) due to the self - weight of the powder, electrostatic adsorption or humidity, resulting in a reduced contact area between the powder and plastic granules and poor mixing uniformity.

[0004] 3. After long - term operation in the mixing box, residues of powder additives and plastic granules will adhere to the stirring blades and the inner wall of the box. In the prior art, the cleaning operation requires disassembling the end plate of the mixing box and manually scraping the residues, which takes up to 0.5 - 2 hours per time and affects the continuous production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an injection molding granule mixer for relay housings to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An injection molding granule mixer for relay housings, comprising: a mixing box, having a feed inlet opened on its top surface and a discharge outlet opened on its bottom surface. A hopper is installed above the feed inlet, and an injection molding machine is horizontally arranged below the discharge outlet. A sealing component is installed inside the discharge outlet; a first window is opened at one end of the mixing box, and a second window is opened at the bottom of the other end; A side - sealing unit, which includes a baffle plate. The baffle plate seals the first window, and exhaust holes for cleaning the remaining dust in the mixing box are opened on the inner wall of the baffle plate; A medium feeding unit, which includes an outer box body. The outer box body is butt - mounted on the outer wall of the second window. At the inner end of the interior of the outer box body, there is a rectangular frame. Inside the rectangular frame, there is a first enclosure assembly installed. On the outer wall of the rectangular frame, there are powder bag storage assemblies symmetrically arranged. Between the two powder bag storage groups is a middle feeding cavity. On the outside of the middle feeding cavity, a second enclosure assembly is installed; the first enclosure assembly includes a mesh enclosure mode and a middle dust - discharging mode, and the second enclosure assembly includes a middle air - supply mode and a closed mode; at the outer end of the interior of the outer box body, a reciprocating pushing assembly is installed. The reciprocating pushing assembly is used to reciprocally pat the powder bag storage assemblies, so that dust intermittently escapes into the mixing box; on the bottom surface of the outer box body, a third window and a fourth window are opened; A dust collection unit, which is communicated with the third window and is used for collecting the remaining dust in the mixing box under negative pressure; An air - supply unit, which is communicated with the bottom of the fourth window. The air - supply unit is used to reuse the waste heat of the injection - molding machine housing to convey hot air to the mixing box to preheat the particles.

[0007] Preferably, the first enclosure assembly includes a first winding roller, a second winding roller and an enclosure soft curtain. The first winding roller and the second winding roller are respectively vertically arranged on the inner walls at both ends of the rectangular frame. One end of the enclosure soft curtain is wound around the first winding roller and the other end is wound around the second winding roller. The exposed part of the enclosure soft curtain is located inside the rectangular frame. The enclosure soft curtain has a first enclosure area and a second enclosure area. The first enclosure area is a mesh structure, and a first diversion opening is opened in the middle of the second enclosure area; in the mesh enclosure mode, the first enclosure area encloses the second window; in the middle dust - discharging mode, the second enclosure area encloses the second window, and the first diversion opening is relatively communicated with the inner end of the middle feeding cavity.

[0008] Preferably, the third window is relatively located at the bottom of the middle feeding cavity. The dust collection unit includes a dust collection pipe and a dust collection box. The dust collection pipe is relatively arranged below the middle feeding cavity. The bottom of the dust collection pipe is communicated with the dust collection box, and a valve plate is installed at the top opening of the dust collection box.

[0009] Preferably, the second enclosure assembly includes a side blocking plate, a receiving box and a locking screw. The receiving box is arranged on the top surface of the outer box body. A reserved through - hole is opened on the top surface of the outer box body. Above the reserved through - hole, there is a receiving box. Inside the receiving box, a side blocking plate is vertically arranged. The side blocking plate is fixed in the receiving box through a locking screw located on the side.

[0010] Preferably, the powder bag storage assembly includes a U - shaped box. The opening of the U - shaped box faces upward. The U - shaped box is fixed at the end of the rectangular frame. Inside the U - shaped box, there is a powder bag placed. The inside of the powder bag is used to store and add powder. Inside the U - shaped box, there is a pressing plate installed elastically and horizontally. On the top surface of the outer box body, a fifth window is opened. Above the fifth window, there is a second cover plate. The fifth window is used as the replacement position of the powder bag.

[0011] Preferably, an air inlet hole is provided at the bottom of the side of the U-shaped box close to the central guide cavity, a first cover plate is vertically elastically slidably installed on the outer side of the air inlet hole, and a matching inclined block is provided on the outer wall of the first cover plate.

[0012] Preferably, the reciprocating driving assembly includes a movable rod, a horizontal suspension rod and a first motor. The movable rod slides axially through the middle of the outer wall of the outer box body. The outer end of the movable rod is provided with a matching vertical ring. The first motor is arranged on the outer wall of the outer box body. The output end of the first motor is provided with a resistance column, and the resistance column extends into the matching vertical ring; the inner end of the movable rod is connected to the longitudinal rod, and the two ends of the longitudinal rod are symmetrically provided with a push plate and a resistance bevel block. The resistance bevel block is located on the inner side of the push plate, and a sliding sleeve is provided on the middle top surface of the longitudinal rod. The sliding sleeve is mounted on the outer wall of the horizontal suspension rod, and the horizontal suspension rod is horizontally fixed to the inner top of the outer box body; when the movable rod moves inward, the push plate pushes the extrusion plate, and the resistance bevel block resists the matching bevel block to open the first cover plate, and the dust ejected quickly enters the mixing box under the action of hot air.

[0013] Preferably, the fourth window is relatively located below the reciprocating driving assembly, and the air supply unit includes a horizontal box body, a fan box and a vertical box body. The horizontal box body is arranged on the top surface of the injection molding machine, the air outlet end of the horizontal box body is connected to the fan box, the outlet end of the fan box is connected to the vertical box body, an electric heating auxiliary pipe is arranged inside the vertical box body, and the top of the vertical box body is connected to the fourth window.

[0014] Preferably, the closing assembly includes a closing plate and a double-headed driving rod. The closing plate is symmetrically arranged in two groups. The horizontal side of the closing plate is inserted into the discharge port of the mixing box. The double-headed driving rod is arranged at both ends of the mixing box. The two ends of the double-headed driving rod are connected to the outer wall of the closing plate.

[0015] Preferably, stirring blades are installed inside the mixing box, and a second motor for driving two groups of stirring blades to rotate is provided on the outer wall of the baffle; an air inlet connector is provided on the outer wall of the baffle, and the air inlet connector is connected to an air pump through a hose, and the air pump is arranged on the top of the mixing box.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention designs a medium guiding unit with switchable working modes. During the mixing stage, hot air based on the waste heat of the injection molding machine can be input into the mixing box to remove the waste heat from the injection molded particles. At the same time, the powder bag can be intermittently patted to allow the dust to escape into the mixing box, so that the dust and particles are fully mixed. During the cleaning stage, the medium guiding unit is adjusted to the discharging state, and the exhaust holes at the baffle can discharge the gas, so that the residual dust in the mixing box is discharged to the dust collecting unit through the middle guiding cavity and the third window, thereby realizing automatic cleaning of the mixing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the mixer and the injection molding machine in the installation state of the present invention; Figure 2This is a schematic diagram of the connection structure between the mixer and the hopper of the present invention; Figure 3 This is a schematic diagram of the exhaust holes on the inner wall of the baffle of the present invention; Figure 4 This is a schematic diagram of the overall side cross-section structure of the mixer of the present invention; Figure 5 This is a schematic diagram of the side cross-section structure of the medium conveying unit of the present invention; Figure 6 This is a schematic diagram of the structure of the second baffle assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the outer box body of the present invention; Figure 8 This is a schematic diagram of the internal structure of the powder bag storage assembly of the present invention; Figure 9 This is a schematic diagram of the reciprocating pushing assembly of the present invention; Figure 10 This is a schematic diagram of the structure of the medium conveying unit when hot air is input alone of the present invention; Figure 11 This is a schematic diagram of the structure of the medium conveying unit when hot air and powder additives are input of the present invention; Figure 12 This is a schematic diagram of the structure of the medium conveying unit when discharging dust in the mixing box of the present invention; Reference numerals: 100, mixing box, 110, feed inlet, 120, discharge outlet, 130, first window, 140, second window, 200, closing assembly, 210, closing plate, 220, double-headed driving rod, 300, side sealing unit, 310, air inlet joint, 320, exhaust hole, 330, air pump, 340, baffle, 400, stirring blade, 410, second motor, 500, medium conveying unit, 510, outer box body, 511, third window, 512, fourth window, 513, fifth window, 514, second cover plate, 515, reserved through hole, 520, first baffle assembly, 521, first winding roller, 522, second winding roller, 523, baffle soft curtain, 5231, first baffle area, 5232, second baffle area, 5233, first diversion port, 530, second baffle assembly, 531, side blocking plate, 532, accommodating box, 533, locking screw; 540, rectangular frame, 550, powder bag storage assembly, 551, U-shaped box, 552, air inlet hole, 553, first cover plate, 5531, mating inclined block, 554, pressing plate, 555, powder bag, 560, middle conveying cavity, 600, reciprocating driving assembly, 610, first motor, 611, resistance column, 620, matching vertical ring, 630, movable rod, 640, longitudinal rod, 641, sliding sleeve, 650, resistance inclined block, 660, push plate, 670, horizontal suspension rod, 700, dust collection unit, 710, dust collection pipe, 720, dust collection box, 730, valve plate, 800, air supply unit, 810, horizontal box body, 820, fan box, 830, vertical box body, 840, electric heating auxiliary pipe, 910, lower hopper, 920, injection molding machine. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiment: The present invention provides a technical solution of a relay housing injection molding particle mixer, such as Figures 1-12 As shown, it comprises: a mixing box 100, a feeding port 110 is provided on the top surface, a discharging port 120 is provided on the bottom surface, a lower hopper 910 is installed above the feeding port 110, a horizontally arranged injection molding machine 920 is provided below the discharging port 120, and a closing component 200 is installed inside the discharging port 120; a first window 130 is provided at one end of the mixing box 100, and a second window 140 is provided at the bottom of the other end; The side sealing unit 300 includes a baffle 340, which is sealed in the first window 130, and an exhaust hole 320 for cleaning the residual dust in the mixing box 100 is opened on the inner wall of the baffle 340; The medium guide unit 500 includes an outer box body 510, which is docked and installed on the outer wall of the second window 140. A rectangular frame 540 is provided at the inner end of the outer box body 510, a first enclosure assembly 520 is installed inside the rectangular frame 540, and a powder bag storage assembly 550 is symmetrically provided on the outer wall of the rectangular frame 540. A middle guide cavity 560 is provided between two groups of powder bag storage groups, and a second enclosure assembly 530 is installed on the outer side of the middle guide cavity 560; the first enclosure assembly 520 includes a mesh enclosure mode and a middle dust removal mode, and the second enclosure assembly 530 includes a middle air supply mode and a closed mode; a reciprocating push assembly 600 is installed at the inner outer end of the outer box body 510, and the reciprocating push assembly 600 is used to reciprocately beat the powder bag storage assembly 550 so that the dust is intermittently dispersed into the mixing box 100; a third window 511 and a fourth window 512 are provided on the bottom surface of the outer box body 510; The dust collection unit 700 is connected to the third window 511 and is used to collect the remaining dust in the mixing box 100 under negative pressure; The air supply unit 800 is connected to the bottom of the fourth window 512. The air supply unit 800 is used to reuse the waste heat of the housing of the injection molding machine 920 to convey hot air to the mixing box 100 to preheat the particles.

[0020] In the above solution: 1. The air supply unit 800 can suck air and convey it into the mixing box 100. The measure of conveying hot air can bring the following effects: 1.1 When the air flow passes through the injection molding machine 920, the air flow will be heated, so as to realize the reuse of the waste heat on the housing of the injection molding machine 920; 1.2 The hot air can preheat the plastic particles, reduce the melting energy consumption, reduce the time and energy required for subsequent heating and melting of the injection molding machine 920, and improve the production efficiency.

[0021] 1.3 Blowing hot air can evaporate moisture, avoid generating bubbles or streaks during melting, and improve the surface finish of the product.

[0022] 1.4 The hot air flow can promote the particle flow and enhance the stirring effect.

[0023] 2. Exhaust holes 320 are arranged on the inner wall of the baffle 340. After the processing is completed, the exhaust holes 320 can input high-pressure air into the mixing box 100, so that the residual dust in the mixing box 100 is discharged, realizing the automatic cleaning of the mixing box 100; at the same time, the discharged dust enters the dust collection unit 700 through the third window 511, realizing rapid collection; 3. The first baffle component 520 can control the on-off state of the rectangular frame 540 and the second window 140. When inputting hot air, the first baffle component 520 can be in the mesh baffle mode, so as to ensure the input of hot air and avoid the outflow of particles; When cleaning the dust, if the mesh baffle mode is still maintained, the dust blown out by the exhaust holes 320 will be blocked by the first baffle component 520. Therefore, the first baffle component 520 can also be adjusted to the middle dust outlet mode, so that the blown dust can be fully led out to the third window 511; 4. The second baffle component 530 can control the on-off of the middle conveying cavity 560. When conveying hot air, in order to ensure the normal introduction of hot air, at this time, the second baffle component 530 can be adjusted to the air supply mode. When it is necessary to export dust, the second baffle component 530 is adjusted to the closed mode. In this way, the blown dust can be blocked, and then the dust falls to the lower third window 511 and the dust collection unit 700, realizing the recovery of dust; 5. To add a trace amount of powder additive into the mixing box 100, exemplary powder additives include talcum powder and antioxidants that reduce the stirring resistance. A reciprocating pushing assembly 600 is designed to reciprocate and beat the powder bags in the powder bag storage assembly 550, so that dust intermittently escapes into the mixing box 100. The intermittent escape has the following effects: 5.1. The method of feeding powder by beating is completed in a sealed manner inside the outer box body 510, and the powder directly escapes into the mixing box 100, greatly reducing dust escape during traditional open feeding and avoiding air pollution in the workshop.

[0024] 5.2. By controlling the powder release rate through the beating intensity and frequency, combined with the hot air flow inside the outer box body 510 and the mixing box 100, the diffusion direction of the dust can be directed, avoiding disorderly flying, increasing the coverage area, and improving the mixing effect.

[0025] 5.3. Traditional one-time feeding easily causes the powder to agglomerate due to static electricity or humidity, forming "lumps"; while the powder bag is beaten and released in a progressive process, the powder drifts into the mixing box 100 in batches. With the cooperation of hot air and mechanical stirring, the dispersion is more uniform.

[0026] 5.4. The release of the powder is synchronized with the mixing of the plastic particles (instead of pre-adding), and the continuously moving particle flow inside the mixing box 100 is used to drive the dynamic distribution of the powder, forming a homogenization process of "releasing while adsorbing".

[0027] To enable the first enclosure assembly 520 to flexibly switch between the mesh enclosure mode and the middle dust outlet mode, the following solution is given: The first enclosure assembly 520 includes a first winding roller 521, a second winding roller 522, and an enclosure soft curtain 523. The first winding roller 521 and the second winding roller 522 are respectively vertically arranged on the inner walls at both ends of the rectangular frame 540. One end of the enclosure soft curtain 523 is wound around the first winding roller 521, and the other end is wound around the second winding roller 522. The exposed part of the enclosure soft curtain 523 is located inside the rectangular frame 540. The enclosure soft curtain 523 has a first enclosure area 5231 and a second enclosure area 5232. The first enclosure area 5231 is a mesh structure, and a first diversion port 5233 is opened in the middle of the second enclosure area 5232. In the mesh enclosure mode, the first enclosure area 5231 encloses the second window 140. In the middle dust outlet mode, the second enclosure area 5232 encloses the second window 140, and the first diversion port 5233 is relatively communicated with the inner end of the middle conveying cavity 560.

[0028] By switching the forward and reverse rotations of the first winding roller 521 and the second winding roller 522, the area of the enclosure soft curtain 523 at the second window 140 can be changed. The enclosure soft curtain 523 moves along the inner side of the rectangular frame 540 to adjust the first enclosure area 5231 or the second enclosure area 5232 to be placed inside the rectangular frame 540 and inside the second window 140. The design of the flexible enclosure soft curtain 523 not only facilitates the switching of the enclosure area but also minimizes the space occupied by the entire assembly.

[0029] To enable the second enclosure assembly 530 to flexibly switch between the central air supply mode and the closed mode, the following solution is provided: The second enclosure assembly 530 includes side blocking plates 531, a receiving box 532, and locking screws 533. The receiving box 532 is provided on the top surface of the outer box body 510. A reserved through hole 515 is opened on the top surface of the outer box body 510. The receiving box 532 is provided above the reserved through hole 515. A side blocking plate 531 is vertically provided inside the receiving box 532, and the side blocking plate 531 is fixed inside the receiving box 532 by locking screws 533 located on the side.

[0030] Manually unscrew the locking screws 533, and then the side blocking plate 531 can be lowered to block the central guiding cavity 560. When not in use, lift the side blocking plate 531 into the receiving box 532 and tighten the locking screws 533.

[0031] To enable the powder bag storage assembly 550 to meet the need for patting and powder escaping, the following solution is provided: The powder bag storage assembly 550 includes a U-shaped box 551 with an upward opening. The U-shaped box 551 is fixedly provided at the end of the rectangular frame 540. A powder bag 555 is placed inside the U-shaped box 551, and the inside of the powder bag 555 is used to store the added powder. An air inlet hole 552 is opened at the bottom of the side of the U-shaped box 551 close to the central guiding cavity 560. A first cover plate 553 is elastically slidably installed vertically outside the air inlet hole 552, and a cooperating inclined block 5531 is provided on the outer wall of the first cover plate 553; A pressing plate 554 is elastically slidably installed horizontally inside the U-shaped box 551. A fifth window 513 is opened on the top surface of the outer box body 510, and a second cover plate 514 is provided above the fifth window 513. The fifth window 513 is used as the replacement position for the powder bag 555.

[0032] When the pressing plate 554 is stressed, the pressing plate 554 moves inward and compresses the spring at the sliding part, and then the pressing plate 554 can pat the powder bag 555 inside the U-shaped box 551, and the dust inside the powder bag 555 escapes and then enters the mixing box 100 through the mesh holes of the inner first enclosure area 5231; After the patting is completed, the pressing plate 554 is not stressed, and the spring drives the pressing plate 554 to reset; In order to speed up the escape speed of dust and increase the coverage, when flapping, the matching inclined block 5531 will also be lifted up by force, thereby driving the first cover plate 553 to be lifted up, so that the input hot air can be diverted to the U-shaped box 551, and then the escaped dust is blown into the mixing box 100 through the mesh structure; when the first cover plate 553 is lifted up, the spring of the sliding part will also be compressed. After the flapping is completed, the matching inclined block 5531 is not subjected to force, and the spring drives the first cover plate 553 to descend and close the air inlet hole 552; When the powder bag 555 is insufficient, the second cover plate 514 can be opened to take out the used powder bag 555 and replace it with a new powder bag 555 .

[0033] In order to enable the reciprocating driving assembly 600 to realize synchronous intermittent driving of the extrusion plate 554 and the matching inclined block 5531, the following scheme is given: the reciprocating driving assembly 600 includes a movable rod 630, a horizontal suspension rod 670 and a first motor 610, the movable rod 630 axially slides through the middle of the outer wall of the outer box body 510, the outer end of the movable rod 630 is provided with a matching vertical ring 620, the first motor 610 is arranged on the outer wall of the outer box body 510, and the output end of the first motor 610 is provided with a resistance column 611, and the resistance column 611 extends into the matching vertical ring 620; the movable rod 630 The inner end is connected to the longitudinal rod 640, and the two ends of the longitudinal rod 640 are symmetrically provided with a push plate 660 and a resistance bevel block 650. The resistance bevel block 650 is located on the inner side of the push plate 660. A sliding sleeve 641 is provided on the middle top surface of the longitudinal rod 640. The sliding sleeve 641 is mounted on the outer wall of the horizontal suspension rod 670, and the horizontal suspension rod 670 is horizontally fixed to the inner top of the outer box body 510; when the movable rod 630 moves inward, the push plate 660 pushes the extrusion plate 554, and the resistance bevel block 650 resists the matching bevel block 5531 to open the first cover plate 553, and the dust ejected quickly enters the mixing box 100 under the action of hot air.

[0034] In the above scheme: when the first motor 610 rotates, it can drive the resistance column 611 to rotate, and then the resistance column 611 resists and cooperates with the vertical to horizontal reciprocating motion, the movable rod 630 extends and retracts inwards and outwards, and then drives the longitudinal rod 640 to follow the movement, the sliding sleeve 641 slides along the horizontal suspension rod 670 to guide the movement of the longitudinal rod 640, and the longitudinal rod 640 drives the resistance inclined block 650 and the push plate 660 located at both ends to move synchronously, the push plate 660 pushes the extrusion plate 554 to move horizontally, and the resistance inclined block 650 resists and cooperates with the inclined block 5531 to move vertically; when the reciprocating pushing assembly 600 is folded, it is staggered with the side blocking plate 531 and will not affect the lifting of the side blocking plate 531.

[0035] As a preferred embodiment, the third window 511 is relatively located at the bottom of the middle conveying cavity 560. The dust collection unit 700 includes a dust collection pipe 710 and a dust collection box 720. The dust collection pipe 710 is relatively arranged below the middle conveying cavity 560, the bottom of the dust collection pipe 710 is communicated with the dust collection box 720, and a valve plate 730 is installed at the top opening of the dust collection box 720. During dust collection, the valve plate 730 is opened, and the blown dust falls into the dust collection box 720 through the dust collection pipe 710; when hot air is input, the valve plate 730 is closed to prevent the hot air from entering the dust collection pipe 710.

[0036] As a preferred embodiment, the fourth window 512 is relatively placed below the reciprocating pushing assembly 600. The air supply unit 800 includes a horizontal box body 810, a fan box 820 and a vertical box body 830. The horizontal box body 810 is arranged on the top surface of the injection molding machine 920, the air outlet end of the horizontal box body 810 is communicated with the fan box 820, the outlet end of the fan box 820 is communicated with the vertical box body 830, an electric heating auxiliary pipe 840 is arranged inside the vertical box body 830, and the top of the vertical box body 830 is communicated with the fourth window 512.

[0037] When hot air needs to be input, the fan box 820 draws air, so that the air flow first passes through the horizontal box body 810. When passing through the horizontal box body 810, the air flow will be heated by the residual heat of the shell of the injection molding machine 920, and then enters the outer box body 510 through the vertical box body 830 and the fourth window 512, and finally is exported through the middle conveying cavity 560; when the residual heat is insufficient, the electric heating auxiliary pipe 840 can be used for auxiliary heating.

[0038] As a preferred embodiment, an air inlet joint 310 is arranged on the outer wall of the baffle 340. The air inlet joint 310 is communicated with an air pump 330 through a hose, and the air pump 330 is arranged on the top of the mixing box 100. When the mixing box 100 needs to be cleaned, the air pump 330 outputs high-pressure air flow, and then the high-pressure air flow is exported to the air inlet joint 310 through the hose and finally discharged through each exhaust hole 320.

[0039] As a preferred embodiment, the closing assembly 200 includes a closing plate 210 and a double-headed driving rod 220. Two groups of closing plates 210 are symmetrically arranged. The horizontal sides of the closing plates 210 are inserted into the discharge port 120 of the mixing box 100. The double-headed driving rod 220 is arranged at both ends of the mixing box 100, and both ends of the double-headed driving rod 220 are connected to the outer wall of the closing plate 210; a stirring blade 400 is installed inside the mixing box 100, and a second motor 410 for driving the two groups of stirring blades 400 to rotate is arranged on the outer wall of the baffle 340.

[0040] During mixing, the second motor 410 drives the stirring blade 400 to rotate and stir the plastic particles; After mixing is completed, the double-headed driving rod 220 drives the closing plate 210 to be horizontally pulled outwards, so that the mixed raw materials fall into the injection molding machine 920.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A relay housing injection molding particle mixer, characterized in that: include: A mixing box, with a feed inlet on the top surface and a discharge outlet on the bottom surface, a lower hopper installed above the feed inlet, a horizontally arranged injection molding machine installed below the discharge outlet, and a closing component installed inside the discharge outlet; a first window is opened at one end of the mixing box, and a second window is opened at the bottom of the other end; A side sealing unit, comprising a baffle, the baffle is sealed in the first window, and an exhaust hole for cleaning residual dust in the mixing box is opened on the inner wall of the baffle; The medium guide unit comprises an outer box body, which is docked and installed on the outer wall of the second window, a rectangular frame is provided at the inner end of the inner part of the outer box body, a first enclosure assembly is installed inside the rectangular frame, a powder bag storage assembly is symmetrically provided on the outer wall of the rectangular frame, a middle guide cavity is provided between the two groups of powder bag storage groups, and a second enclosure assembly is installed outside the middle guide cavity; the first enclosure assembly includes a mesh enclosure mode and a middle dust removal mode, and the second enclosure assembly includes a middle air supply mode and a closed mode; a reciprocating push assembly is installed at the inner outer end of the outer box body, and the reciprocating push assembly is used to reciprocately beat the powder bag storage assembly so that the dust intermittently escapes into the mixing box; a third window and a fourth window are opened on the bottom surface of the outer box body; A dust collecting unit, which is in communication with the third window and is used to collect residual dust in the mixing box by negative pressure; The air supply unit is connected to the bottom of the fourth window, and is used to reuse the residual heat of the injection molding machine shell to transport hot air to the mixing box to preheat the particles.

2. A relay housing injection molding particle mixer according to claim 1, characterized in that: The first enclosure assembly includes a first winding roller, a second winding roller and an enclosure soft curtain. The first winding roller and the second winding roller are respectively vertically arranged on the inner walls at both ends of the rectangular frame. One end of the enclosure soft curtain is wound on the first winding roller, and the other end is wound on the second winding roller. The exposed part of the enclosure soft curtain is located on the inner side of the rectangular frame. The enclosure soft curtain has a first enclosure area and a second enclosure area. The first enclosure area is a mesh structure, and a first guide port is opened in the middle of the second enclosure area; in the mesh enclosure mode, the first enclosure area encloses the second window; in the middle dust removal mode, the second enclosure area encloses the second window, and the first guide port is relatively connected to the inner end of the middle guide cavity.

3. A relay housing injection molding particle mixer according to claim 1, characterized in that: The third window is relatively located at the bottom of the middle guiding cavity. The dust collecting unit includes a dust collecting pipe and a dust collecting box. The dust collecting pipe is relatively arranged below the middle guiding cavity. The bottom of the dust collecting pipe is connected to the dust collecting box. A valve plate is installed at the top opening of the dust collecting box.

4. A relay housing injection molding particle mixer according to claim 3, characterized in that: The second enclosure assembly includes a side blocking plate, a containing box and a locking screw. The containing box is arranged on the top surface of the outer box body. A reserved opening is opened on the top surface of the outer box body. A containing box is arranged above the reserved opening. A side blocking plate is vertically arranged inside the containing box. The side blocking plate is fixed in the containing box by a locking screw located on the side.

5. A relay housing injection molding particle mixer according to claim 1, characterized in that: The powder bag storage assembly includes a U-shaped box, the opening of the U-shaped box faces upward, the U-shaped box is fixedly arranged at the end of the rectangular frame, a powder bag is placed inside the U-shaped box, the inside of the powder bag is used to store added powder, an extrusion plate is elastically and slidably installed laterally inside the U-shaped box, a fifth window is opened on the top surface of the outer box body, a second cover plate is arranged above the fifth window, and the fifth window is used as a replacement position for the powder bag.

6. A relay housing injection molding particle mixer according to claim 5, characterized in that: The U-shaped box is provided with an air inlet at the bottom of the side surface close to the middle guide cavity, and a first cover plate is vertically elastically slidably installed on the outer side of the air inlet, and a matching inclined block is provided on the outer wall of the first cover plate.

7. A relay housing injection molding particle mixer according to claim 6, characterized in that: The reciprocating driving assembly includes a movable rod, a horizontal suspension rod and a first motor. The movable rod slides axially through the middle of the outer wall of the outer box body. A matching vertical ring is provided at the outer end of the movable rod. The first motor is arranged on the outer wall of the outer box body. A resistance column is provided at the output end of the first motor, and the resistance column extends into the matching vertical ring. The inner end of the movable rod is connected to the longitudinal rod. Push plates and resistance oblique blocks are symmetrically provided at both ends of the longitudinal rod. The resistance oblique block is located on the inner side of the push plate. A sliding sleeve is provided on the middle top surface of the longitudinal rod. The sliding sleeve is mounted on the outer wall of the horizontal suspension rod. The horizontal suspension rod is horizontally fixed to the inner top of the outer box body. When the movable rod moves inward, the push plate pushes the extrusion plate, and the resistance oblique block resists the matching oblique block to open the first cover plate. The dust ejected quickly enters the mixing box under the action of hot air.

8. A relay housing injection molding particle mixer according to claim 1, characterized in that: The fourth window is relatively arranged below the reciprocating driving assembly, and the air supply unit includes a horizontal box body, a fan box and a vertical box body. The horizontal box body is arranged on the top surface of the injection molding machine, and the air outlet end of the horizontal box body is connected to the fan box, and the outlet end of the fan box is connected to the vertical box body. An electric heating auxiliary pipe is arranged inside the vertical box body, and the top of the vertical box body is connected to the fourth window.

9. A relay housing injection molding particle mixer according to claim 1, characterized in that: The closing assembly includes a closing plate and a double-headed driving rod. Two groups of closing plates are symmetrically arranged. The horizontal side of the closing plate is inserted into the discharge port of the mixing box. The double-headed driving rod is arranged at both ends of the mixing box. The two ends of the double-headed driving rod are connected to the outer wall of the closing plate.

10. The relay housing injection molding particle mixer according to claim 1, characterized in that: The mixing box is provided with stirring blades inside, and the outer wall of the baffle is provided with a second motor for driving the two groups of stirring blades to rotate; the outer wall of the baffle is provided with an air inlet joint, which is connected to an air pump through a hose, and the air pump is arranged on the top of the mixing box.

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