Rubber injection molding device with dust removal and exhaust functions

Abstract

The invention discloses a rubber injection molding device with dust removal and exhaust functions, and relates to the technical field of injection molding.The rubber injection molding device comprises an injection molding machine and a mechanical arm, the mechanical arm is mounted on one side of the injection molding machine, and a dust removal mechanism, a rubber melting mechanism and an exhaust mechanism are mounted above the injection molding machine through a support; the dust removal mechanism, the glue melting mechanism and the exhaust mechanism are sequentially installed from top to bottom, a vacuum machine is arranged between the dust removal mechanism and the glue melting mechanism, a glue conveying pipe is connected between the glue melting mechanism and the exhaust mechanism, and the exhaust mechanism is connected with an injection molding machine through a main feeding pipe. The injection molding product is automatically adsorbed through the conductive characteristic of the injection molding part and the mold, intelligent manufacturing is achieved, the universality of the discharging clamp is improved, the application range is wide, and grabbing is accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and specifically to a rubber injection molding device with dust removal and exhaust functions. Background Art

[0002] With the progress of modern medicine, high molecular materials have achieved good development in this field. Products such as reagent kits and powder inhalers are all manufactured by injection molding. These products are suitable for the treatment of chronic obstructive pulmonary disease and have strong development potential. The medical consumables injection molding workshop needs to maintain a certain dust-free environment with a high level of cleanliness. Materials do not enter the injection molding workshop, and high molecular injection molding materials are pumped into the injection molding machine through pipelines for injection molding.

[0003] Based on the concept of environmental protection, injection molding materials also incorporate some recycled plastic waste for production to improve the recycling rate of plastics. Due to the characteristics of high molecular injection molding materials themselves, their surfaces often adhere to dust. As the injection molding materials dissolve, these dust particles are incorporated into the products, which has a certain impact on the structure and aesthetics of the products. Since rubber dissolution occurs under normal pressure, the dissolved rubber contains air bubbles inside. Usually, it needs to be vibrated to remove air bubbles before use. However, the scope of action of the vibrating rod is limited. Therefore, in order to completely remove air bubbles, the number of vibrating rods needs to be increased, which increases the manufacturing cost of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a rubber injection molding device with dust removal and exhaust functions to solve the problems proposed in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A rubber injection molding device with dust removal and exhaust functions, including an injection molding machine and a robotic arm. The robotic arm is installed on one side of the injection molding machine. Above the injection molding machine, a dust removal mechanism, a melting mechanism, and an exhaust mechanism are installed through a bracket. The dust removal mechanism, the melting mechanism, and the exhaust mechanism are installed in sequence from top to bottom. A vacuum machine is arranged between the dust removal mechanism and the melting mechanism. A glue conveying pipe is connected between the melting mechanism and the exhaust mechanism. The exhaust mechanism is connected to the injection molding machine through a feeding main pipe;

[0006] A blanking fixture is arranged on the robotic arm. An electric air pump is arranged inside the blanking fixture. A number of flexible suction cups are installed on the blanking fixture. The electric air pump is electrically connected to a control system.

[0007] Further, the dust removal mechanism includes a material extraction pipe, a dust removal pipe, a fixed spiral wire mesh, a hollow spiral rotor, a sealing ring body, and an air extraction pipe. One end of the material extraction pipe is connected to the raw material bin, and the other end of the material extraction pipe is connected to the dust removal pipe. The bottom of the dust removal pipe is connected to a vacuum machine. The fixed spiral wire mesh is arranged at the upper part of the dust removal pipe, and the hollow spiral rotor is rotatably installed at the lower part of the dust removal pipe. The vacuum machine extracts particulate raw materials from the raw material bin through the material extraction pipe, and the particulate raw materials fall from top to bottom in the dust removal pipe. Since the air flow in the dust removal pipe moves downward, the air flow will push the hollow spiral rotor to rotate in the dust removal pipe. When the particulate raw materials pass through the fixed spiral wire mesh, they collide with the fixed spiral wire mesh and roll on the surface of the fixed spiral wire mesh. During continuous tumbling and collision, the dust on the raw material particles falls off and directly passes through the fixed spiral wire mesh.

[0008] Further, the spiral direction of the fixed spiral wire mesh is opposite to that of the hollow spiral rotor. A hollow support is arranged below the dust removal pipe. The inside of the hollow support is in communication with the outside of the dust removal pipe. The hollow spiral rotor is rotatably installed on the hollow support. The inside of the hollow spiral rotor is connected to the inside of the hollow support. A number of micropores are formed on the outer surface of the hollow spiral rotor. At this time, the electric air pump also extracts air through the air extraction pipe, causing a negative pressure to be generated inside the sealing ring body. Subsequently, a negative pressure environment also appears inside the hollow support and the hollow spiral rotor. The vacuum degree inside the hollow spiral rotor is the same as that in the dust removal pipe. Since the hollow spiral rotor is in a rotating state, both dust and particulate raw materials will pass through the surface of the hollow spiral rotor. The mass of the dust is much lighter than that of the particulate raw materials. Therefore, as the air flow diverges at the hollow spiral rotor, the dust will preferentially move into the hollow spiral rotor along with the air flow. The particulate raw materials continue to fall under the action of their own weight until they enter the melting machine through the vacuum machine. The dust enters the hollow spiral rotor through the micropores. The clean dust-free particulate raw materials pass through the hollow spiral rotor, and the dust enters the hollow support and then enters the air extraction pipe through the sealing ring body, and the dust is discharged.

[0009] Further, a sealing ring body is arranged outside the dust removal pipe. The sealing ring body is located at the through connection between the hollow support and the outside of the dust removal pipe. A air extraction pipe is connected to the sealing ring body. One end of the air extraction pipe is also connected to an electric air pump. Through the design of the fixed spiral wire mesh and the hollow spiral rotor, the particulate raw materials extracted from the raw material bin are separated from the dust by rolling and collision, and then the dust is extracted through the negative pressure environment inside the hollow spiral rotor. The clean particulate raw materials are sent into the melting machine, realizing the function of dust removal and filtration, and providing pure raw materials for subsequent injection molding.

[0010] Further, the glue melting mechanism includes a glue melting machine, a first motor, and a spiral extrusion rotor. The spiral extrusion rotor is rotatably installed in the glue melting machine. The first motor is coaxially connected to the spiral extrusion rotor. An electric heating wire is arranged in the glue melting machine. The first motor drives the spiral extrusion rotor to rotate. The spiral extrusion rotor pushes the granular raw material towards the rubber conveying pipe. The electric heating wire heats the granular raw material, which is finally melted and extruded from the glue melting machine. At this time, the flowing rubber still carries air bubbles, and the rubber flows from the rubber conveying pipe into the exhaust chamber.

[0011] Further, the exhaust mechanism includes an exhaust chamber, a bottom plate, a disc-shaped spiral coil, a toothed ring, a second motor, and a transmission gear. The opening at the top of the exhaust chamber is located below the rubber conveying pipe. The disc-shaped spiral coil is rotatably installed inside the exhaust chamber. The bottom plate is arranged at the bottom of the disc-shaped spiral coil. The toothed ring is arranged at the top of the disc-shaped spiral coil. When the second motor is powered on, it drives the transmission gear to rotate. The transmission gear drives the disc-shaped spiral coil to rotate through the toothed ring. Under the action of the rotational centrifugal force, the melted rubber flows along the wall of the disc-shaped spiral coil towards the outer circle. Since the rubber is squeezed towards the wall, the air bubbles in the rubber are discharged from the melted rubber one after another. The rubber with the air bubbles discharged finally flows from the disc-shaped spiral coil to the bottom of the exhaust chamber.

[0012] Further, the second motor is installed at the top of the exhaust chamber. The transmission gear is installed on the rotor shaft of the second motor. The transmission gear penetrates the exhaust chamber and meshes with the toothed ring for transmission. A plurality of branch pipes are connected to the bottom of the exhaust chamber. One end of each of the plurality of branch pipes is connected to the feeding main pipe. By the method of rotating and exhausting air bubbles by centrifugal force, the melted rubber flows along the wall of the disc-shaped spiral coil. When the rubber flows out of the disc-shaped spiral coil, the air bubbles are completely discharged. Compared with the method of using a vibrating rod, it can save more space, complete the separation of air bubbles in the rubber with a smaller structural layout, and is more convenient for cleaning and maintenance. After passing through the branch pipes, the rubber is concentrated and flows from the feeding main pipe into the injection molding machine. The injection molding machine injects the rubber into the mold to form the product. After the product is formed, the robotic arm drives the blanking fixture to blank the product.

[0013] Further, a plurality of suction rods are slidably installed on the blanking fixture. A spring is connected between each suction rod and the blanking fixture. A plurality of flexible suction cups are installed at one end of each suction rod away from the spring. After the plurality of suction rods on the blanking fixture come into contact with the product, at the same time, a part of the suction rods will also come into contact with the mold. The suction rods can slide and adjust in the blanking fixture according to the shape of the product or the mold. The spring makes the flexible suction cups on the suction rods fit on the product.

[0014] Furthermore, each of the grabbing and suction rods and the flexible suction cup is connected from top to bottom, a piston is arranged inside each grabbing and suction rod, a ventilation groove is opened at one end of each grabbing and suction rod near the bottom, and an electrothermal deformation sheet is arranged inside each grabbing and suction rod corresponding to the ventilation groove, and the electrothermal deformation sheet blocks the ventilation groove, and the electrothermal deformation sheet is composited by two materials with different thermal expansion coefficients, and an electric heating wire is arranged between the two materials with different thermal expansion coefficients. Since rubber is not conductive and the metal mold is conductive, if the contact sheet on the flexible suction cup contacts the rubber product, the contact circuit will not be turned on, and the electrothermal deformation sheet There will be no electricity. The electrothermal deformation sheet will not bend or deform if there is no electricity. The electrothermal deformation sheet will block the ventilation groove. If the contact sheet on the flexible suction cup contacts the metal mold, the contact circuit will be turned on, the electrothermal deformation sheet will be energized and heated to cause bending and deformation. The electrothermal deformation sheet will open the ventilation groove, and the electric air pump will draw the gas in the unloading fixture out. The air pressure in the unloading fixture will decrease, and the piston in each grabbing rod will move up. Only the flexible suction cup in contact with the product can generate negative pressure suction, and the flexible suction cup in contact with the metal mold will not generate adsorption force. Therefore, the unloading fixture will take out the injection molded product.

[0015] Furthermore, a contact circuit is arranged inside each of the grabbing and suction rods, and two contact plates are arranged at the edge of each of the flexible suction cups. The two contact plates are connected to the electrothermal deformation plate in the contact circuit. By arranging the grabbing and suction rods in an array on the blanking fixture and automatically adsorbing the injection molded products through the conductive properties of the injection molded parts and the molds, the universal function of the blanking fixture is improved, and the use range is wide and the grasping is precise.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the design of fixed spiral gauze and hollow spiral rotor, the granular raw materials drawn from the raw material bin are separated from the dust by rolling and collision, and then the dust is extracted through the negative pressure environment in the hollow spiral rotor. The clean granular raw materials are sent to the melter, realizing the function of dust removal and filtration, and providing pure raw materials for subsequent injection molding.

[0018] 2. The bubbles are removed by centrifugal rotation, so that the melted rubber flows along the wall of the disc-shaped spiral roll. When the rubber flows out of the disc-shaped spiral roll, the bubbles are removed. Compared with the method of using a vibrating rod, it can save more space, separate the bubbles in the rubber with a smaller structural layout, and is easier to clean and maintain.

[0019] 3. By arranging grabbing and suction rods in an array on the blanking fixture and automatically adsorbing the injection molded products through the conductive properties of the injection molded parts and the mold, intelligent manufacturing is realized, the universal function of the blanking fixture is improved, the application range is wide, and the grasping is precise.

[0020] 4. Plastic waste is made into injection molding raw materials after being remelted, filtered and purified. In order to achieve energy conservation and environmental protection, injection molding materials will also incorporate some recycled plastic waste for production to improve the recycling rate of plastics. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0022] Figure 2 It is a schematic diagram of a partial external structure of the present invention;

[0023] Figure 3 It is a schematic diagram of a partial internal structure of the present invention Figure 1 ;

[0024] Figure 4 It is a schematic diagram of a partial internal structure of the present invention Figure 2 ;

[0025] Figure 5 It is a schematic diagram of the internal structure of the dust removal pipe of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the blanking fixture of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the suction rod part of the present invention.

[0028] In the figure: 1, injection molding machine; 2, robotic arm; 3, blanking fixture; 4, material extraction pipe; 5, dust removal pipe; 6, vacuum machine; 7, melting machine; 8, first motor; 9, spiral extrusion rotor; 10, glue conveying pipe; 11, fixed spiral screen; 12, hollow spiral rotor; 13, hollow bracket; 14, sealing ring body; 15, extraction pipe; 16, exhaust chamber; 17, bottom plate; 18, disc-shaped spiral blade; 19, branch pipe; 20, feeding main pipe; 21, spring; 22, suction rod; 23, flexible suction cup; 24, piston; 25, electrothermal deformation sheet; 26, contact sheet; 27, second motor; 28, transmission gear; 29, toothed ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment: As Figures 1-7As shown in the figure, the present invention provides a technical solution, a rubber injection molding device with dust removal and exhaust functions, including an injection molding machine 1 and a robotic arm 2. The robotic arm 2 is installed on one side of the injection molding machine 1. Above the injection molding machine 1, a dust removal mechanism, a melting mechanism, and an exhaust mechanism are installed through brackets. The dust removal mechanism, the melting mechanism, and the exhaust mechanism are installed in sequence from top to bottom. A vacuum machine 6 is arranged between the dust removal mechanism and the melting mechanism. A glue conveying pipe 10 is connected between the melting mechanism and the exhaust mechanism. The exhaust mechanism is connected to the injection molding machine 1 through a feeding main pipe 20. A blanking fixture 3 is arranged on the robotic arm 2. An electric air pump (not shown in the figure) is arranged inside the blanking fixture 3. A plurality of flexible suction cups 23 are installed on the blanking fixture 3. The air pump is connected to the control system through an electric circuit.

[0031] The dust removal mechanism includes a material extraction pipe 4, a dust removal pipe 5, a fixed spiral screen 11, a hollow spiral rotor 12, a sealing ring body 14, and an extraction pipe 15. One end of the material extraction pipe 4 is connected to the raw material bin, and the other end of the material extraction pipe 4 is connected to the dust removal pipe 5. The bottom of the dust removal pipe 5 is connected to the vacuum machine 6. The fixed spiral screen 11 is arranged in the upper part of the dust removal pipe 5. The hollow spiral rotor 12 is rotatably installed in the lower part of the dust removal pipe 5. The spiral direction of the fixed spiral screen 11 is opposite to the spiral direction of the hollow spiral rotor 12. A hollow support 13 is arranged below the dust removal pipe 5. The inside of the hollow support 13 is communicated with the outside of the dust removal pipe 5. The hollow spiral rotor 12 is rotatably installed on the hollow support 13. The inside of the hollow spiral rotor 12 is communicated with the inside of the hollow support 13. A plurality of micropores are opened on the outer surface of the hollow spiral rotor 12. A sealing ring body 14 is arranged outside the dust removal pipe 5. The sealing ring body 14 is located at the through position of the hollow support 13 and the outside of the dust removal pipe 5. A extraction pipe 15 is connected to the sealing ring body 14. One end of the extraction pipe 15 is also connected to an electric air pump (not shown in the figure).

[0032] The vacuum machine 6 extracts granular raw materials from the raw material bin through the material extraction pipe 4. The granular raw materials fall from top to bottom in the dust removal pipe 5. Since the air flow in the dust removal pipe 5 moves downward, the air flow will push the hollow spiral rotor 12 to rotate in the dust removal pipe 5. When the granular raw materials pass through the fixed spiral screen 11, they collide with the fixed spiral screen 11 and roll on the surface of the fixed spiral screen 11. During continuous tumbling and collision, the dust on the raw material particles falls off and directly passes through the fixed spiral screen 11. At this time, the electric air pump also extracts air through the air extraction pipe 15, causing a negative pressure inside the sealing ring body 14. Subsequently, a negative pressure environment also appears inside the hollow support 13 and the hollow spiral rotor 12. The vacuum degree inside the hollow spiral rotor 12 is the same as that in the dust removal pipe 5. Since the hollow spiral rotor 12 is in a rotating state, both the dust and the granular raw materials will pass through the surface of the hollow spiral rotor 12. The mass of the dust is much lighter than that of the granular raw materials. Therefore, as the air flow divides at the hollow spiral rotor 12, the dust will preferentially move into the hollow spiral rotor 12 along with the air flow. The granular raw materials continue to fall under the action of their own weight until they enter the melting machine 7 through the vacuum machine 6. The dust enters the hollow spiral rotor 12 through the micropores. The clean and dust-free granular raw materials pass through the hollow spiral rotor 12, while the dust enters the hollow support 13 and then enters the air extraction pipe 15 through the sealing ring body 14, and the dust is discharged. Through the design of the fixed spiral screen 11 and the hollow spiral rotor 12, the granular raw materials extracted from the raw material bin are separated from the dust by rolling and collision, and then the dust is extracted through the negative pressure environment inside the hollow spiral rotor 12. The clean granular raw materials are sent into the melting machine 7, realizing the function of dust removal and filtration, and providing pure raw materials for subsequent injection molding.

[0033] The melting mechanism includes a melting machine 7, a first motor 8, and a spiral extrusion rotor 9. The spiral extrusion rotor 9 is rotatably installed in the melting machine 7. The first motor 8 is coaxially connected to the spiral extrusion rotor 9. Electric heating wires are arranged in the melting machine 7. The first motor 8 drives the spiral extrusion rotor 9 to rotate. The spiral extrusion rotor 9 pushes the granular raw materials in the direction of the rubber conveying pipe 10. The electric heating wires heat the granular raw materials, which are finally melted and extruded from the melting machine 7. At this time, the flowing rubber still carries bubbles. The rubber flows from the rubber conveying pipe 10 into the exhaust chamber 16.

[0034] The exhaust mechanism includes an exhaust chamber 16, a bottom plate 17, a disc-shaped spiral coil 18, a toothed ring 29, a second motor 27, and a transmission gear 28. The opening at the top of the exhaust chamber 16 is located below the rubber delivery pipe 10. The disc-shaped spiral coil 18 is rotatably installed inside the exhaust chamber 16. The bottom plate 17 is arranged at the bottom of the disc-shaped spiral coil 18. The toothed ring 29 is arranged at the top of the disc-shaped spiral coil 18. The second motor 27 is installed at the top of the exhaust chamber 16. The transmission gear 28 is installed on the rotor shaft of the second motor 27. The transmission gear 28 penetrates through the exhaust chamber 16 and meshes with the toothed ring 29 for transmission. Three branch pipes 19 are connected to the bottom of the exhaust chamber 16. One end of the three branch pipes 19 is connected to the feeding main pipe 20. When the second motor 27 is energized, it drives the transmission gear 28 to rotate. The transmission gear 28 drives the disc-shaped spiral coil 18 to rotate through the toothed ring 29. Under the action of the rotational centrifugal force, the melted rubber flows along the wall surface of the disc-shaped spiral coil 18 towards the outer circle. Since the rubber is squeezed towards the wall surface, the air bubbles in the rubber are discharged from the melted rubber one after another. The rubber with the air bubbles discharged finally flows from the disc-shaped spiral coil 18 to the bottom of the exhaust chamber 16. By the way of rotating and exhausting air bubbles through centrifugal force, the melted rubber flows along the wall surface of the disc-shaped spiral coil 18. When the rubber flows out of the disc-shaped spiral coil 18, the air bubbles are completely discharged. Compared with the method of using a vibrating rod, it can save more space, complete the separation of air bubbles in the rubber with a smaller structural layout, and is more convenient for cleaning and maintenance. After passing through the branch pipes 19, the rubber converges and flows from the feeding main pipe 20 to the injection molding machine 1. The injection molding machine 1 injects the rubber into the mold to form the product. After the product is formed, the robotic arm 2 drives the blanking fixture 3 to blank the product.

[0035] A plurality of grabbing and sucking rods 22 are slidably mounted on the unloading fixture 3, a spring 21 is connected between each grabbing and sucking rod 22 and the unloading fixture 3, a plurality of flexible suction cups 23 are mounted on one end of each grabbing and sucking rod 22 away from the spring 21, each grabbing and sucking rod 22 and the flexible suction cup 23 are connected vertically, a piston 24 is arranged inside each grabbing and sucking rod 22, a ventilation groove is opened at one end of each grabbing and sucking rod 22 near the bottom, an electrothermal deformation sheet 25 is arranged at the corresponding ventilation groove inside each grabbing and sucking rod 22, the electrothermal deformation sheet 25 blocks the ventilation groove, and each grabbing and sucking rod A contact circuit is arranged inside 22, and two contact sheets 26 are arranged at the edge of each flexible suction cup 23. The two contact sheets 26 are connected to the electric thermal deformation sheet 25 in the contact circuit. After a number of grabbing and sucking rods 22 on the blanking fixture 3 contact the product, a part of the grabbing and sucking rods 22 will also contact the mold at the same time. The grabbing and sucking rods 22 can slide and adjust in the blanking fixture 3 according to the shape of the product or the mold. The spring 21 makes the flexible suction cup 23 on the grabbing and sucking rods 22 fit on the product. The electric thermal deformation sheet 25 is composed of two materials with different thermal expansion coefficients. An electric heating wire is arranged between two materials with different thermal expansion coefficients. Since rubber is not conductive but the metal mold is conductive, if the contact piece 26 on the flexible suction cup 23 contacts the rubber product, the contact circuit will not be turned on, the electric thermal deformation piece 25 will not be energized, and the electric thermal deformation piece 25 will not bend and deform without being energized. The electric thermal deformation piece 25 blocks the ventilation groove. If the contact piece 26 on the flexible suction cup 23 contacts the metal mold, the contact circuit will be turned on, the electric thermal deformation piece 25 will be energized and heated to bend and deform, and the electric thermal deformation piece 25 will open the ventilation groove. The electric air pump draws out the gas in the blanking fixture 3, the air pressure in the blanking fixture 3 is reduced, and the piston 24 in each grabbing and sucking rod 22 moves up. Only the flexible suction cup 23 in contact with the product can generate negative pressure suction, and the flexible suction cup 23 in contact with the metal mold will not generate adsorption force. Therefore, the blanking fixture 3 takes out the injection-molded product, and by arranging the grabbing and sucking rods 22 in an array on the blanking fixture 3 and automatically adsorbing the injection-molded product through the conductive properties of the injection-molded part and the mold, the universal function of the blanking fixture 3 is improved, the use range is wide, and the grasping is precise.

[0036] Working principle of the present invention: The vacuum machine 6 extracts granular raw materials from the raw material bin through the material extraction pipe 4. The granular raw materials fall from top to bottom in the dust removal pipe 5. Since the air flow in the dust removal pipe 5 moves downward, the air flow will push the hollow spiral rotor 12 to rotate in the dust removal pipe 5. When the granular raw materials pass through the fixed spiral screen 11, they collide with the fixed spiral screen 11 and roll on the surface of the fixed spiral screen 11. During continuous tumbling and collision, the dust on the raw material particles falls off and directly passes through the fixed spiral screen 11. At this time, the electric air pump also extracts air through the air extraction pipe 15, causing a negative pressure inside the sealing ring body 14. Subsequently, a negative pressure environment also appears inside the hollow support 13 and the hollow spiral rotor 12. The vacuum degree inside the hollow spiral rotor 12 is the same as that in the dust removal pipe 5. Since the hollow spiral rotor 12 is in a rotating state, both dust and granular raw materials will pass through the surface of the hollow spiral rotor 12. The mass of the dust is much lighter than that of the granular raw materials. Therefore, as the air flow divides at the hollow spiral rotor 12, the dust will preferentially move into the hollow spiral rotor 12 along with the air flow. The granular raw materials continue to fall under the action of their own weight until they enter the melting machine 7 through the vacuum machine 6. The dust enters the hollow spiral rotor 12 through the micropores. The clean dust-free granular raw materials pass through the hollow spiral rotor 12, while the dust enters the hollow support 13 and then enters the air extraction pipe 15 through the sealing ring body 14. The dust is discharged. Through the design of the fixed spiral screen 11 and the hollow spiral rotor 12, the granular raw materials extracted from the raw material bin are separated from the dust by rolling and collision, and then the dust is extracted through the negative pressure environment inside the hollow spiral rotor 12. The clean granular raw materials are sent into the melting machine 7, realizing the function of dust removal and filtration, and providing pure raw materials for subsequent injection molding.

[0037] The first motor 8 drives the spiral extrusion rotor 9 to rotate. The spiral extrusion rotor 9 pushes the granular raw materials towards the rubber conveying pipe 10. The electric heating wire heats the granular raw materials, which are finally melted and extruded from the melting machine 7. At this time, the flowing rubber still carries bubbles. The rubber flows from the rubber conveying pipe 10 into the exhaust chamber 16.

[0038] The second motor 27 is energized to drive the transmission gear 28 to rotate. The transmission gear 28 drives the disc-shaped spiral blade 18 to rotate through the toothed ring 29. Under the action of the rotational centrifugal force, the melted rubber flows towards the outer ring along the wall surface of the disc-shaped spiral blade 18. Since the rubber is squeezed towards the wall surface, the air bubbles in the rubber are discharged from the melted rubber one after another. The rubber with the discharged air bubbles finally flows from the disc-shaped spiral blade 18 to the bottom of the exhaust chamber 16. By the way of rotating and exhausting air bubbles through centrifugal force, the melted rubber flows along the wall surface of the disc-shaped spiral blade 18. When the rubber flows out of the disc-shaped spiral blade 18, the air bubbles are completely discharged. Compared with the way of using a vibrating rod, it can save more space, complete the separation of air bubbles in the rubber with a smaller structural layout, and is more convenient for cleaning and maintenance. The rubber flows from the branch pipe 19 and is concentrated to flow into the injection molding machine 1 through the feeding main pipe 20. The injection molding machine 1 injects the rubber into the mold to form the product. After the product is formed, the robotic arm 2 drives the blanking fixture 3 to blank the product.

[0039] After several suction rods 22 on the blanking fixture 3 contact the product, at the same time, a part of the suction rods 22 will also contact the mold. The suction rods 22 can slide and adjust in the blanking fixture 3 according to the shape of the product or the mold. The spring 21 makes the flexible suction cups 23 on the suction rods 22 fit on the product. Since rubber is non-conductive and the metal mold is conductive, if the contact piece 26 on the flexible suction cup 23 contacts the rubber product, the contact circuit will not conduct, the electrothermal deformation piece 25 will not be energized, and the electrothermal deformation piece 25 will not bend and deform without being energized, and the electrothermal deformation piece 25 blocks the ventilation groove. If the contact piece 26 on the flexible suction cup 23 contacts the metal mold, the contact circuit conducts, the electrothermal deformation piece 25 is energized and heated to bend and deform, and the electrothermal deformation piece 25 opens the ventilation groove. The electric air pump pumps the gas in the blanking fixture 3 outwards. The air pressure in the blanking fixture 3 decreases, and the piston 24 in each suction rod 22 moves upwards. Only the flexible suction cup 23 in contact with the product can generate negative pressure suction, and the flexible suction cup 23 in contact with the metal mold will not generate adsorption force. Therefore, the blanking fixture 3 takes out the injection-molded product. By arranging the suction rods 22 in an array on the blanking fixture 3 and automatically adsorbing the injection-molded product through the conductive characteristics of the injection-molded part and the mold, the universal function of the blanking fixture 3 is improved, the application range is wide, and the grasping is accurate.

[0040] 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 without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A rubber injection molding device with dust removal and exhaust function, comprising an injection molding machine (1) and a mechanical arm (2), wherein the mechanical arm (2) is installed on one side of the injection molding machine (1), characterized in that: A dust removal mechanism, a melt mechanism and an exhaust mechanism are installed above the injection molding machine (1) via a bracket. The dust removal mechanism, the melt mechanism and the exhaust mechanism are installed in sequence from top to bottom. A vacuum machine (6) is provided between the dust removal mechanism and the melt mechanism. A rubber delivery pipe (10) is connected between the melt mechanism and the exhaust mechanism. The exhaust mechanism is connected to the injection molding machine (1) via a main material supply pipe (20). The mechanical arm (2) is provided with a material unloading fixture (3), an electric air pump is provided inside the material unloading fixture (3), a plurality of flexible suction cups (23) are installed on the material unloading fixture (3), and the electric air pump is connected to a control system via a circuit.

2. The rubber injection molding device with dust removal and exhaust function according to claim 1, characterized in that: The dust removal mechanism comprises a material extraction pipe (4), a dust removal pipe (5), a fixed spiral gauze (11), a hollow spiral rotor (12), a sealing ring body (14) and an exhaust pipe (15); one end of the material extraction pipe (4) is connected to the raw material bin, the other end of the material extraction pipe (4) is connected to the dust removal pipe (5), the bottom of the dust removal pipe (5) is connected to a vacuum machine (6), the fixed spiral gauze (11) is arranged on the upper part of the dust removal pipe (5), and the hollow spiral rotor (12) is rotatably installed on the lower part of the dust removal pipe (5).

3. The rubber injection molding device with dust removal and exhaust function according to claim 2, characterized in that: The spiral direction of the fixed spiral gauze (11) is opposite to the spiral direction of the hollow spiral rotor (12); a hollow bracket (13) is arranged below the dust removal pipe (5); the interior of the hollow bracket (13) is connected to the outside of the dust removal pipe (5); the hollow spiral rotor (12) is rotatably mounted on the hollow bracket (13); the interior of the hollow spiral rotor (12) is connected to the interior of the hollow bracket (13); and a plurality of micropores are provided on the outer surface of the hollow spiral rotor (12).

4. The rubber injection molding device with dust removal and exhaust function according to claim 3 is characterized in that: A sealing ring body (14) is arranged on the outside of the dust removal pipe (5), and the sealing ring body (14) is located at the through-hole between the hollow bracket (13) and the outside of the dust removal pipe (5). An exhaust pipe (15) is connected to the sealing ring body (14), and one end of the exhaust pipe (15) is also connected to an electric air pump.

5. The rubber injection molding device with dust removal and exhaust function according to claim 1, characterized in that: The melt mechanism comprises a melt machine (7), a first motor (8) and a spiral extrusion rotor (9); the spiral extrusion rotor (9) is rotatably mounted in the melt machine (7); the first motor (8) is coaxially connected to the spiral extrusion rotor (9); and an electric heating wire is arranged in the melt machine (7).

6. The rubber injection molding device with dust removal and exhaust function according to claim 1, characterized in that: The exhaust mechanism comprises an exhaust bin (16), a bottom plate (17), a disc-shaped spiral roll (18), a gear ring (29), a second motor (27) and a transmission gear (28); the opening at the top of the exhaust bin (16) is located below the rubber delivery hose (10); the disc-shaped spiral roll (18) is rotatably mounted inside the exhaust bin (16); the bottom plate (17) is arranged at the bottom of the disc-shaped spiral roll (18); and the gear ring (29) is arranged at the top of the disc-shaped spiral roll (18).

7. The rubber injection molding device with dust removal and exhaust function according to claim 6, characterized in that: The second motor (27) is installed on the top of the exhaust bin (16), the transmission gear (28) is installed on the rotor shaft of the second motor (27), the transmission gear (28) penetrates the exhaust bin (16) and meshes with the gear ring (29) for transmission, and a plurality of branch pipes (19) are connected to the bottom of the exhaust bin (16), and one end of the plurality of branch pipes (19) is connected to the main feed pipe (20).

8. The rubber injection molding device with dust removal and exhaust function according to claim 1, characterized in that: A plurality of grabbing and sucking rods (22) are slidably mounted on the material unloading clamp (3), a spring (21) is connected between each of the grabbing and sucking rods (22) and the material unloading clamp (3), and a plurality of the flexible suction cups (23) are mounted on one end of each of the grabbing and sucking rods (22) away from the spring (21).

9. The rubber injection molding device with dust removal and exhaust function according to claim 8, characterized in that: Each of the grabbing and suction rods (22) and the flexible suction cup (23) are connected vertically, a piston (24) is arranged inside each of the grabbing and suction rods (22), a ventilation groove is opened at one end of each of the grabbing and suction rods (22) close to the bottom, and an electrothermal deformation sheet (25) is arranged inside each of the grabbing and suction rods (22) at a position corresponding to the ventilation groove, and the electrothermal deformation sheet (25) blocks the ventilation groove.

10. The rubber injection molding device with dust removal and exhaust function according to claim 9, characterized in that: A contact circuit is arranged inside each of the grabbing and sucking rods (22), and two contact sheets (26) are arranged at the edge of each of the flexible sucking cups (23). The two contact sheets (26) are connected to the electrothermal deformation sheet (25) in the contact circuit.

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