A multi-station automatic rubber injection molding machine

Abstract

The present invention discloses a multi-station automatic rubber injection molding machine, which includes a machine base, a moving material preparation and injection mechanism, a feeding mechanism, a mold temperature controller, a plurality of constant temperature runner plates, a control system and a plurality of molding molds; the mold temperature controller is cooperatively connected with the plurality of constant temperature runner plates and the moving material preparation and injection mechanism and controls the temperature of the materials on the constant temperature runner plates and the moving material preparation and injection mechanism so that the rubber materials in the moving material preparation and injection mechanism and the constant temperature runner plates are always in a softened state. The control system controls the moving material preparation and injection mechanism to move to any one of the constant temperature runner plates, injects the rubber material in the constant temperature runner plate in a constant temperature softened state into the molding mold for product injection molding, and then continues to move to another constant temperature runner plate to perform product injection molding on the molding mold. It can realize that one moving material preparation and injection mechanism corresponds to multiple finished product molds for injection molding.

Description

Technical Field

[0001] The present invention relates to the field of mechanical equipment, and specifically, to a multi-station automatic rubber injection molding machine. Background Art

[0002] Today, with the rapid development of the rubber industry, it is widely used in various fields of daily life and occupies an important position both in terms of quantity and variety. The final rubber forming is achieved through an injection machine and a mold. The injection molding machine is the main molding equipment for making various shaped rubber products using an injection molding mold. Its working principle is similar to that of a syringe used for injection. It is by means of the thrust of a screw (or plunger) to inject the softened rubber material into a closed mold cavity, and after curing and shaping, the process of obtaining the product.

[0003] However, the existing injection machines can only inject one pair of molds at a time and cannot achieve injection molding for multiple pairs of molds. Moreover, during injection molding, since a part of the heat is dissipated during the material flow process, the material becomes hard and cannot be effectively injection molded, resulting in low working efficiency and low yield rate. Summary of the Invention

[0004] The present invention aims to at least partly solve the technical problems in the prior art of only one-to-one injection molding and material temperature loss, and provides a multi-station automatic rubber injection molding machine.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A multi-station automatic rubber injection molding machine, which includes

[0007] a machine base, a moving material preparation and injection mechanism, a feeding mechanism, a mold temperature controller, a plurality of constant temperature runner plates, a control system, a plurality of molding molds, and a mold pressing mechanism; the control system controls the operation of the moving material preparation and injection mechanism, the feeding mechanism, the mold temperature controller, and the mold pressing mechanism;

[0008] The moving material preparation and injection mechanism is movably connected to the machine base;

[0009] The feeding mechanism is installed on the moving material preparation and injection mechanism and is used to supply materials to the moving material preparation and injection mechanism for softening processing;

[0010] The constant temperature runner plates are installed on the mold pressing mechanism; the molding molds are installed on the mold pressing mechanism and are located below the constant temperature runner plates;

[0011] The mold pressing mechanism is installed on the machine base to press the molding molds;

[0012] The described mold temperature controller is cooperatively connected with several described constant temperature runner plates and the moving stock feeding and injection mechanism, and controls the temperature of the materials on the constant temperature runner plates and the moving stock feeding and injection mechanism, so that the rubber materials in the moving stock feeding and injection mechanism and the constant temperature runner plates are always in a softened state; the control system controls the moving stock feeding and injection mechanism and moves it to any one of the constant temperature runner plates, injects the rubber material in the moving stock feeding and injection mechanism in a constant temperature softened state into the constant temperature runner plate, and the softened rubber material is further subjected to constant temperature treatment through the constant temperature runner plate and then injected into the molding die for product injection molding. After injection molding, the moving stock feeding and injection mechanism moves to another constant temperature runner plate to perform product injection molding on the molding die.

[0013] As a preferred embodiment of this example, the moving stock feeding and injection mechanism includes a moving component and an injection component. The injection component is installed on the moving component, and the moving component is installed on the machine base.

[0014] As a preferred embodiment of this example, the moving component includes a moving base, a lateral moving component, and a longitudinal moving driving part. The lateral moving component is installed at the bottom of the moving base and is connected to the machine base. The longitudinal moving driving part is installed above the moving base and is connected to the injection component.

[0015] As a preferred embodiment of this example, the lateral moving component includes a lateral driving part, a gear, a rack, a lateral slide rail, and a lateral slide groove. The lateral slide rail is installed on the machine base. The lateral slide groove is installed at the bottom of the moving base. The lateral slide groove is movably matched with the lateral slide rail. The lateral driving part is installed on the moving base. The gear is installed on the lateral driving part. The rack is installed at the bottom of the moving base and meshes with the gear.

[0016] As a preferred embodiment of this example, the injection component includes a pushing and injecting driving part, a barrel, a screw component, a screw rotating driving part, and a temperature control chamber. The barrel is installed outside the screw component. The barrel is provided with a feed inlet. The screw rotating driving part is connected to the screw component and can drive the screw component to rotate and stir the materials. The pushing and injecting driving part is sleeved on the barrel, and the driving part of the pushing and injecting driving part is connected to the screw rotating driving part to drive the screw component to move back and forth for material extrusion. The temperature control chamber is arranged outside the barrel. The temperature control chamber is provided with a first water inlet and a first water outlet for connection with the mold temperature controller.

[0017] As a preferred embodiment of this example, the injection component further includes a resistance ruler for controlling material storage, and the resistance ruler is installed on the pushing and injection driving member.

[0018] The screw component includes a screw, a check ring, a screw head and a nozzle. The screw, the check ring, the screw head and the nozzle are all installed in the barrel. The screw is connected to the screw head. The check ring is installed between the screw and the screw head. The nozzle is located in front of the screw head.

[0019] As a preferred embodiment of this example, the constant temperature runner plate is provided with a second water inlet, a second water outlet, an injection hole, a discharge hole, a water flow channel and a material flow channel. The constant temperature runner plate is installed on the mold pressing mechanism. The second water inlet and the second water outlet are connected to the mold temperature controller.

[0020] As a preferred embodiment of this example, an upper mold heating component is provided under the constant temperature runner plate. The upper mold heating component includes an upper heat insulation plate and an upper heating plate. The upper heat insulation plate is installed between the constant temperature runner plate and the upper heating plate. Heating elements are provided in the upper heating plate.

[0021] As a preferred embodiment of this example, a lower mold heating component is correspondingly provided under the upper mold heating component. The lower mold heating component is installed on the mold pressing mechanism. The lower mold heating component includes a lower heat insulation plate and a lower heating plate. The lower heating plate is installed on the lower heat insulation plate. Heating elements are provided in the lower heating plate. The molding mold is installed between the upper heating plate and the lower heating plate.

[0022] As can be seen from the above technical solutions, the beneficial effects of the present invention are:

[0023] The injection molding machine controls the operation of the moving material preparation and injection mechanism, the feeding mechanism, and the mold temperature controller through the control system. The control system controls the moving material preparation and injection mechanism to move to any one of the constant temperature runner plates, inject the rubber material in a constant temperature and softened state in the moving material preparation and injection mechanism into the molding mold for product injection molding, and then continue to move to another constant temperature runner plate to perform product injection molding on the molding mold, so that one moving material preparation and injection mechanism can perform injection molding corresponding to multiple finished product molds. Repeating this process, since the mold temperature controller performs a temperature control process on the moving material preparation and injection mechanism and the constant temperature runner plate, the rubber material in the moving material preparation and injection mechanism and the constant temperature runner plate can be in a constant temperature and softened state, making it easy to be injected into the finished product mold for injection molding, preventing waste due to hardening after one injection, avoiding waste of raw materials, improving the quality rate of products, and improving production efficiency. Description of the Drawings

[0024] Figure 1 is the structural schematic of the present invention Figure 1 ,

[0025] Figure 2 is the partial structural schematic of the present invention Figure 1 ,

[0026] Figure 3 is the partial structural schematic of the present invention Figure 2 ,

[0027] Figure 4 is the partial structural schematic of the present invention Figure 3 ,

[0028] Figure 5 is the partial structural schematic of the present invention Figure 4 ,

[0029] Figure 6 is the partial structural schematic of the present invention Figure 5 ,

[0030] Figure 7 is the partial structural schematic of the present invention Figure 6 ,

[0031] Figure 8 is the partial structural schematic of the present invention Figure 7 ,

[0032] Figure 9 is the partial structural schematic of the present invention Figure 8 ,

[0033] Figure 10 is the partial structural schematic of the present invention Figure 9 ,

[0034] Figure 11 is the partial structural schematic of the present invention Figure 10 ,

[0035] Figure 12 is the partial structural schematic of the present invention Figure 10 One,

[0036] Figure 13 is the partial structural schematic of the present invention Figure 10 Two,

[0037] Figure 14 is the partial structural schematic of the present invention Figure 10 Three. Detailed implementation manners

[0038] 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.

[0039] refer to Figure 1 As shown, a multi-station automatic rubber injection molding machine includes a base 1, a mobile material preparation injection mechanism 2, a feeding mechanism 3, a mold temperature controller 4, a plurality of constant temperature flow channel plates 5, a control system 6, a mold pressing mechanism 7, an upper mold heating component 8, a lower mold heating component 9 and a plurality of molding molds. The control system 6 controls the mobile material preparation injection mechanism 2, the feeding mechanism 3, the mold temperature controller 4, the mold pressing mechanism 7, the upper mold heating component 8 and the lower mold heating component 9 to work, wherein:

[0040] refer to Figure 1 , 2 As shown in , 3, 4, and 5, the mobile material preparation and injection mechanism 2 includes a mobile component 21 and an injection component 22, the injection component 22 is mounted on the mobile component 21, and the mobile component 21 is mounted on the machine base 1;

[0041] The moving assembly 21 includes a moving base 211, a lateral moving assembly 212 and a longitudinal moving driving member 213. The lateral moving assembly 212 is installed at the bottom of the moving base 211 and connected to the base 1. The longitudinal moving driving member 213 is installed above the moving base 211 and connected to the injection assembly 22. The longitudinal moving driving member 213 drives the injection assembly 22 to move forward and backward. The longitudinal moving driving member 213 can be a motor, a cylinder or an oil cylinder. So that it moves longitudinally to the preset corresponding constant temperature flow channel plate 5.

[0042] The transverse moving assembly 212 includes a transverse driving member 2121, a gear 2122, a rack 2123, a transverse slide rail 2124 and a transverse slide groove 2125. The transverse slide rail 2124 is installed on the machine base 1, and the transverse slide groove 2125 is installed at the bottom of the mobile base 211. The transverse slide groove 2125 is movably matched with the transverse slide rail 2124. The transverse driving member 2121 is installed on the mobile base 211, and the gear 2122 is installed on the transverse driving member 2121. The rack 2123 is installed at the bottom of the mobile base 211 and meshes with the gear 2122. The transverse driving member 2121 can be a motor, a cylinder or an oil cylinder. The rotation of the transverse driving member 2121 drives the gear 2122 to rotate and links the rack 2123 to move, so that the mobile base 211 connected to the rack 2123 moves laterally under the guidance of the transverse slide rail 2124 and the transverse slide groove 2125, so as to move laterally to the preset corresponding constant temperature flow channel plate 5. The injection assembly 22 moves back and forth to contact the injection hole 53 on the constant temperature flow channel plate 5.

[0043] The injection component 22 includes a pushing injection driving part 221, a barrel 222, a screw component 223, a screw rotation driving part 224, a temperature control chamber 225 and a resistance ruler 226;

[0044] The barrel 222 is installed outside the screw component 223 and wraps the screw component 223 inside. The barrel 222 is provided with a feeding port 2221, and the feeding port 2221 is docked with the feeding mechanism 3. The longitudinal movement driving part 213 is installed on the moving base 211 and is connected to the pushing injection driving part 221. The longitudinal movement driving part 213 drives the pushing injection driving part 221 to move, thereby driving the barrel 222 connected to the pushing injection driving part 221 to move, so that the screw component 223 in the barrel 222 moves to the constant temperature runner plate 5. The position of the barrel 222 wrapped by the temperature control chamber 225 is the rubber material storage end.

[0045] The pushing injection driving part 221 is installed on the barrel 222, and the driving part of the pushing injection driving part 221 is connected to the screw rotation driving part 224. The movement of the pushing injection driving part 221 drives the screw rotation driving part 224 connected thereto to move, thereby driving the screw component 223 connected to the screw rotation driving part 224 to move back and forth to extrude the material, and injecting the rubber material into the constant temperature runner plate 5 in a way similar to the injection effect and then injecting it from the constant temperature runner plate 5 into the molding die for product molding. The screw rotation driving part 224 is connected to the screw component 223 and can drive the screw component 223 to rotate and stir the material. The temperature control chamber 225 is arranged outside the barrel 222, and the temperature control chamber 225 is provided with a first water inlet 2251 and a first water outlet 2252 for connecting with the mold temperature controller 4.

[0046] The screw component 223 includes a screw 2231, a check ring 2232, a screw head 2233 and a nozzle 2234. The check ring 2232, the screw head 2233 and the nozzle 2234 are all installed in the barrel 222. The screw 2231 is connected to the screw head 2233. The check ring 2232 is installed between the screw 2231 and the screw head 2233. The nozzle 2234 is located in front of the screw head 2233.

[0047] The resistance ruler 226 is installed on the pushing injection driving part 221. The resistance ruler 226 is used to control and monitor the storage amount of the rubber material stirred by the screw component 223, and can control the storage amount of the rubber material according to the parameters such as different sizes and thicknesses under the preset of the control system 6.

[0048] The screw rotation drive 224 is a motor or an air pump. The rotation of the screw rotation drive 224 drives the rotation of the screw 2231, agitating and softening the rubber material and sending it forward to the front section of the screw 2231, that is, transporting it to the rubber material storage end of the barrel 222. The mold temperature controller 4 controls the liquid with a preset temperature to flow into the temperature control chamber 225 from the first water inlet 2251 to perform a constant temperature treatment on the softened rubber material in the rubber material storage end of the barrel 222, ensuring that the internal material is always in a softened state, and then flowing back to the mold temperature controller 4 from the first water outlet 2252 to be heated to the preset temperature and repeating the cycle. When the temperature control chamber 225 is lower than the preset temperature, the mold temperature controller 4 controls the liquid to warm up, and when the temperature control chamber 225 is higher than the preset temperature, the mold temperature controller 4 controls the liquid to cool down, so as to ensure that the temperature of the rubber material in the rubber material storage end of the barrel 222 at the temperature control chamber 225 remains unchanged and is always in a softened state, so as to prevent it from hardening and being continuously injected into the mold.

[0049] Under the action of the mold temperature controller 4, the temperature control chamber 225 can keep the liquid in the temperature control chamber 225 at the preset temperature at any time, so that the material in the rubber material storage end of the barrel 222 inside the temperature control chamber 225 is always in a softened state, and the material will not harden, thus ensuring the smoothness of the extruded material. Previously, the hardened material needed to be discharged as waste, but now it can be ensured that the material is in a molten state to avoid waste discharge of the material, thus saving raw materials.

[0050] When the pushing injection drive 221 drives the screw 2231 to move back and forth to extrude the material and inject the rubber material into the constant temperature runner plate 5 in a way similar to the effect of an injection, the check ring 2232 can prevent the rubber material from retreating back into the barrel 222 under the reaction force during injection.

[0051] Reference Figure 1 、 2 As shown in FIGS. 3, 11, 12, 13, and 14, the feeding mechanism 3 is installed on the mobile stock preparation injection mechanism 2 and is used to supply materials to the mobile stock preparation injection mechanism 2 for softening processing;

[0052] The feeding mechanism 3 includes a hopper 31, a hopper drive component 32, a hopper transmission mechanism 33, and a dragging component 34. The dragging component 34 is arranged at the bottom of the hopper 31, the hopper transmission mechanism 33 is arranged on one side of the dragging component 34, and the hopper drive component 32 is arranged on one side of the hopper transmission mechanism 33. The hopper drive component 32 is used to drive the hopper transmission mechanism 33 to operate to drive the dragging component 34 to rotate, enabling the dragging of the rubber material to move.

[0053] The dragging component 34 includes a suspension plate 341 fixedly connected to the bottom of the hopper 31, and a first dragging wheel 342 and a second dragging wheel 343 which are located at the bottom of the hopper 31 and are rotatably connected to the inner walls on both sides of the suspension plate 341 through rotating shafts respectively. The dragging component 34 further includes a plurality of dragging blocks 344, and the plurality of dragging blocks 344 are all distributed in a staggered and surrounding manner outside the first dragging wheel 342 and the second dragging wheel 343. A first through hole 3411 for the rubber material to enter the suspension plate 341 is formed at the top of the suspension plate 341. The suspension plate 341 is connected to the barrel 222, so that the feeding mechanism 3 is installed. The first through hole 3411 is communicated with the feeding port 2221 to facilitate the rubber material to enter the screw 2231.

[0054] By putting the rubber material through the first through hole 3411 between the first dragging wheel 342 and the second dragging wheel 343, and using the hopper driving component 32 to drive the hopper transmission mechanism 33 to operate, the first dragging wheel 342 and the second dragging wheel 343 in the dragging component 34 can be driven to rotate downward. Since the dragging blocks 344 are all distributed in a staggered and surrounding manner outside the first dragging wheel 342 and the second dragging wheel 343, when the first dragging wheel 342 drives the dragging blocks 344 to rotate downward, at the same time, the second dragging wheel 343 can drive the dragging blocks 344 with positions opposite to those of the dragging blocks 344 on the first dragging wheel 342 to rotate. When the two dragging blocks 344 are parallel, at this moment, the first dragging wheel 342 and the second dragging wheel 343 can respectively press the rubber materials with different thicknesses against each other outside through the dragging blocks 344, so that the rubber material deforms and twists. And due to the twisting deformation force of the rubber material, the rubber material can always stick to the dragging blocks 344, which can not only increase the friction force between the rubber material and the dragging blocks 344 for easy dragging, but also be applicable to feeding and dragging rubber materials with different thicknesses.

[0055] The hopper transmission mechanism 33 includes a worm and gear assembly 331 and a gear component 332. The worm and gear assembly 331 is arranged on one side of the hopper driving component 32, and the gear component 332 is arranged between the worm and gear assembly 331 and the dragging component 34. The hopper driving component 32 includes a servo motor 321 and an output shaft 322 on the output end on one side of the servo motor 321. The worm and gear assembly 331 includes a second housing 3311, a worm wheel 3312, a worm 3313, and a rotating rod 3314. The worm 3313 is fixedly connected to one end of the output shaft 322. The worm wheel 3312 is located at the bottom of the worm 3313, and the worm 3313 meshes with the worm wheel 3312. The rotating rod 3314 is fixedly connected to one side of the worm wheel 3312 and penetrates through the second housing 3311 at one end. By driving the output shaft 322 by the servo motor 321 to drive the worm 3313 to rotate, since the worm 3313 meshes with the worm wheel 3312 to drive the worm wheel 3312 to rotate, at this time, the worm wheel 3312 can drive the rotating rod 3314 to rotate, and the horizontal rotation of the servo motor 321 can be converted into vertical rotation.

[0056] The gear component 332 includes a first housing 3321, a first gear 3322, a second gear 3323, and a third gear 3324. One side of the first housing 3321 is fixedly connected to the second housing 3311. One side of the first gear 3322 is fixedly connected to the rotating rod 3314. The third gear 3324 is located at the bottom of the first gear 3322, and the first gear 3322 meshes with the third gear 3324. The second gear 3323 is located on one side of the third gear 3324, and the third gear 3324 meshes with the second gear 3323. One end of the first driving wheel 342 passes through the suspension plate 341 and the first housing 3321 and is fixedly connected to the second gear 3323. One end of the second driving wheel 343 passes through the suspension plate 341 and the second housing 3311 and is fixedly connected to the third gear 3324. The first gear 3322 is driven to rotate by the rotating rod 3314. Since the first gear 3322 meshes with the third gear 3324 and the third gear 3324 meshes with the second gear 3323, at this time, the first gear 3322 drives the third gear 3324 and the second driving wheel 343 to rotate, and the third gear 3324 drives the second gear 3323 and the first driving wheel 342 to rotate in the opposite direction, enabling the first driving wheel 342 and the second driving wheel 343 to rotate in the opposite direction to facilitate dragging the rubber material.

[0057] To further improve the stability of feeding the rubber material, a support component 35 is provided above one side of the hopper 31 for hanging and supporting the displaced rubber material. The support component 35 includes a first fixing plate 351, a second fixing plate 352, a first support wheel 353, and a second support wheel 354. One side of the first fixing plate 351 and the second fixing plate 352 are respectively fixedly connected to one side of the hopper 31. Both ends of the second support wheel 354 are rotatably connected to one side of the second fixing plate 352 through a rotating shaft, and the bottom of the first support wheel 353 is rotatably connected to the first fixing plate 351.

[0058] Reference Figure 1 、 6, as shown in Figures 7, 8, 9, and 10, the constant temperature runner plate 5 is provided with a second water inlet 51, a second water outlet 52, an injection hole 53, a plurality of discharge holes 54, a water flow channel 55, and a material flow channel 56. The constant temperature runner plate 5 is installed on the mold pressing mechanism 7. The outer ends of the second water inlet 51 and the second water outlet 52 on the constant temperature runner plate 5 are connected to the mold temperature controller 4, and the inner ends are connected to the water flow channel 55. The liquid on the mold temperature controller 4 enters from the second water inlet 51, flows into the water flow channel 55, and then returns to the mold temperature controller 4 from the second water outlet 52. This process can keep the material in the material flow channel 56 at a constant temperature all the time, prevent it from hardening and blocking the material flow channel 56, so as to facilitate continuous operation without the need to clean the runner every time of injection, further saving materials and reducing costs. The injection hole 53 is connected to the material flow channel 56. The rubber material ejected from the nozzle 2234 is injected into the material flow channel 56 through the injection hole 53 and then into the mold for molding.

[0059] Reference Figure 1 , 2 , as shown in Figures 3, 4, and 7, the mold temperature controller 4 is provided with a plurality of water inlet pipes and outlet pipes, which are respectively connected in cooperation with the first water inlet 2251 and the first water outlet 2252 in the mobile stock preparation injection mechanism 2 and the second water inlets 51 and the second water outlets 52 in a plurality of constant temperature runner plates 5, and control the temperature of the materials on the constant temperature runner plates 5 and the mobile stock preparation injection mechanism 2 to keep the rubber materials in the mobile stock preparation injection mechanism 2 and the constant temperature runner plates 5 in a softened state all the time; the control system 6 controls the mobile stock preparation injection mechanism 2 to move to any one of the constant temperature runner plates 5, injects the rubber material in the constant temperature softened state in the constant temperature runner plate 5 into the molding mold for product injection molding, and then continues to move to another constant temperature runner plate 5 for product injection molding in the molding mold.

[0060] Reference Figure 1 , 6 , as shown in Figure 8, the mold pressing mechanism 7 includes a pressing frame 71, a pressing fixed plate 72, a flipping driving member 73, a pressing driving member 74, a clamping plate 75, a side flipping fixing member 76, and a side flipping driving member 77. The pressing frame 71 is installed on the machine base 1. The pressing driving member 74 is installed at the bottom of the pressing frame 71 and connected to the clamping plate 75. The pressing fixed plate 72 is hinged to the pressing frame 71 and connected to the flipping driving member 73. There are two side flipping fixing members 76, which are respectively hinged on both sides of the pressing frame 71. There are also two side flipping driving members 77. The side flipping driving members 77 are installed on the pressing frame 71 and connected to the side flipping fixing members 76. The flipping driving member 73, the pressing driving member 74, and the side flipping driving member 77 can all be cylinders or motors.

[0061] When the mold needs to be closed, the pressing drive member 74 drives the pressing template 75 to rise, the flipping drive member 73 drives the pressing fixed plate 72 to flip, so that the pressing fixed plate 72 faces the pressing template 75, and the side flipping drive member 77 drives the side flipping fixing member 76 to move closer to the middle to fix the pressing fixed plate 72. In this way, one mold closing is completed.

[0062] When the mold is opened, the operation is just the opposite of that when the mold is closed.

[0063] Reference Figure 1 、 6 As shown in FIGS. 8, 9, and 10, the constant temperature runner plate 5 is installed below the pressing fixed plate 72. An upper mold heating assembly 8 is provided below the constant temperature runner plate 5. The upper mold heating assembly 8 includes an upper heat insulation plate 81 and an upper heating plate 82. The upper heat insulation plate 81 is installed between the constant temperature runner plate 5 and the upper heating plate 82. The upper heating plate 82 is provided with heating elements. Here, the heating elements are electric heating rods or electric heating wires. When the heating elements are energized, heat is generated, so that the temperature of the upper heating plate 82 rises. The constant temperature runner plate 5 is maintained at a temperature of 60°C - 80°C under the action of the mold temperature controller 4, so as to ensure that the rubber material in the runner remains in a softened state. Both the upper heat insulation plate 81 and the upper heating plate 82 are provided with discharge holes 54 communicating with the constant temperature runner plate 5. The control system 6 controls the lower heating elements to be energized to raise the temperature of the upper heating plate 82 to between 130°C and 180°C, so that the rubber material can be injected into each corner of the mold and then fluidized and formed.

[0064] Reference Figure 1 、 6 As shown in FIGS. 8, 9, and 10, a lower mold heating assembly 9 is correspondingly provided below the upper mold heating assembly 8. The lower mold heating assembly 9 is installed on the mold pressing mechanism 7. The lower mold heating assembly 9 includes a lower heat insulation plate 91 and a lower heating plate 92. The lower heat insulation plate 91 is installed above the pressing template 75, and the lower heating plate 92 is installed above the lower heat insulation plate 91. The lower heating plate 92 is provided with heating elements. Here, the heating elements are electric heating rods or electric heating wires. When the heating elements are energized, heat is generated, so that the temperature of the lower heating plate 92 rises. The control system 6 controls the lower heating elements to be energized to raise the temperature of the lower heating plate 92 to between 130°C and 180°C, so that the rubber material can be injected into each corner of the mold and then fluidized and formed.

[0065] The upper die and the lower die of the forming die are respectively installed on the upper heating plate 82 and the lower heating plate 92. When the forming die closes the mold to fluidize the product, the pressing drive 74 drives the pressing template 75 to rise, thereby driving the lower die to rise and close with the upper die. The flipping drive 73 drives the pressing fixed plate 72 to flip, so that the pressing fixed plate 72 faces the pressing template 75. The side flipping drive 77 drives the side flipping fixed part 76 to move closer to the middle to fix the pressing fixed plate 72. The upper die and the lower die of the forming die are tightly fixed, and thus a mold closing is completed. When the upper heating plate 82 and the lower heating plate 92 are heated, the temperature can be conducted to the forming die for heating, which helps to fluidize the product. Since the upper die heating component 8 and the lower die heating component 9 are respectively provided with an upper heat insulation plate 81 and a lower heat insulation plate 91, it can prevent other components from being damaged due to excessive temperature when the upper heating plate 82 and the lower heating plate 92 are heated.

[0066] Reference Figure 1-12 As shown in the figure, the product production process:

[0067] (1) Preparation before feeding

[0068] First, attach the rubber material to the second support wheel 354 and place it between the first support wheels 353, and then put the rubber material through the first through hole between the first dragging wheel 342 and the second dragging wheel 343.

[0069] (2) Lateral rotation to longitudinal rotation

[0070] After preparation, the servo motor 321 drives the output shaft 322 to drive the worm 3313 to rotate. Since the worm 3313 meshes with the worm gear 3312 to drive the worm gear 3312 to rotate, at this time, the worm gear 3312 can drive the rotating rod 3314 to rotate counterclockwise, and the lateral rotation of the servo motor 321 can be converted into longitudinal rotation.

[0071] (3) Rotation of the dragging wheels

[0072] After the lateral rotation is converted into longitudinal rotation, the rotating rod 3314 drives the first gear 3322 to rotate counterclockwise. Since the first gear 3322 meshes with the third gear 3324 and the third gear 3324 meshes with the second gear 3323, at this time, the first gear 3322 drives the third gear 3324 and the second dragging wheel 343 to rotate clockwise, and the third gear 3324 drives the second gear 3323 and the first dragging wheel 342 to rotate counterclockwise in the opposite direction.

[0073] (4) Dragging and feeding of the rubber material

[0074] After the driving wheel rotates, since the driving blocks 344 are staggeredly distributed around the outside of the first driving wheel 342 and the second driving wheel 343, when the first driving wheel 342 drives the driving block 344 to rotate downward, at the same time, the second driving wheel 343 can drive the driving block 344 at a position opposite to that of the driving block 344 on the first driving wheel 342 to rotate. When the two driving blocks 344 are parallel, at this moment, the first driving wheel 342 and the second driving wheel 343 can respectively press rubber materials with different thicknesses against the outside without the driving blocks 344 of each other through the driving blocks 344, so that the rubber material deforms and twists. And due to the twisting deformation force of the rubber material, the rubber material can always adhere to the driving block 344. By using the clamping force of the first driving wheel 342 and the second driving wheel 343 on the rubber material and the frictional force therebetween, the rubber material can be dragged downward for feeding.

[0075] (5) Feeding by the injection component

[0076] The control system 6 presets the amount of rubber material to be fed from the feeding mechanism 3 into the barrel 222. The rotation driving part 224 of the screw 2231 rotates to drive the screw 2231 to rotate, stir and soften the material transported from the hopper 31 and send it forward to the rubber material storage end of the barrel 222. At this time, a reaction force will be generated when the material is stirred and advanced, causing the pushing and injection driving part 221 connected to it to retreat backward.

[0077] (6) Controlling the material by the resistance ruler

[0078] When the induction resistance of the resistance ruler 226 reaches the preset value, a signal is sent to the control system 6, and the control system 6 controls the feeding mechanism 3 and the rotation driving part 224 of the screw 2231 to stop working, so as to control the stock in the rubber material storage end of the barrel 222 to be the preset amount.

[0079] (7) Temperature control treatment of the material in the barrel

[0080] The mold temperature controller 4 controls the liquid to flow into the temperature control chamber 225 from the first water inlet 2251, so that the rubber material storage end of the barrel 222 at the part of the temperature control chamber 225 is subjected to a constant temperature treatment. That is, when the temperature of the temperature control chamber 225 is lower than the preset temperature, the mold temperature controller 4 heats the liquid until it reaches the preset value and then flows back to the mold temperature controller 4 from the first water outlet 2252, always controlling the temperature of the temperature control chamber 225 at 60 - 80 degrees Celsius. Thus, the temperature of the material in the rubber material storage end under the temperature control chamber 225 is also controlled at 60 - 80 degrees Celsius and is in a softened state. When the temperature of the temperature control chamber 225 is higher than the preset temperature, the opposite operation can be performed, that is, the mold temperature controller 4 cools the liquid to reduce the temperature of the liquid in the temperature control chamber 225 to the preset temperature to ensure that the temperature of the temperature control chamber 225 is controlled at 60 - 80 degrees Celsius. Thus, the temperature of the material in the rubber material storage end under the temperature control chamber 225 is also controlled at 60 - 80 degrees Celsius and is in a softened state. Repeat the cycle to ensure that the material inside the rubber material storage end is always in a softened state, so that the material will not harden, thereby ensuring the smoothness of the extruded material. Previously, the hardened material was difficult to extrude and waste had to be discharged. Now, it can be ensured that the material is in a molten state and waste discharge can be avoided, thereby saving raw materials.

[0081] (8) Move the injection assembly

[0082] The lateral driving member 2121 rotates to drive the gear 2122 to rotate and link the movement of the rack 2123, so that the moving base 211 connected to the rack 2123 moves laterally under the guiding cooperation of the lateral slide rail 2124 and the lateral chute 2125, so that the nozzle 2234 in front of the screw 2231 moves laterally to the injection hole 53 of one of the preset corresponding constant temperature runner plates 5.

[0083] The longitudinal movement driving member 213 drives the pushing injection driving member 221 to move, thereby driving the barrel 222 connected to the pushing injection driving member 221 to move, so that the nozzle 2234 in front of the screw assembly 223 in the barrel 222 moves to the injection hole 53 of the constant temperature runner plate 5 and abuts against the injection hole 53.

[0084] (9) Injection chamber temperature control treatment

[0085] The mold temperature controller 4 controls the liquid with a preset temperature to flow into the constant temperature runner plate 5 from the second water inlet 51 and flow out from the second water outlet 52, repeating the cycle, so that the rubber material in the material flow path 56 of the constant temperature runner plate 5 is always in a softened state, with the temperature controlled at 60 - 70 degrees Celsius, and the material will not harden, thereby ensuring the smoothness of the extruded material. Previously, the hardened material needed to be discharged as waste. Now, it can be ensured that the material is in a molten state and waste discharge can be avoided, thereby saving raw materials.

[0086] (10) Inject the material

[0087] The pushing and injecting driving member 221 is moved to drive the screw rotation driving member 224 connected thereto to move. At the same time, the solenoid valve 227 is opened, and the resistance ruler 226 controls the feeding amount of the pushing and injecting driving member 221, that is, controls the moving stroke, according to parameters such as the size, thickness, and size of the product. The pushing and injecting driving member 221 is moved to drive the screw rotation driving member 224 connected thereto to move, thereby driving the screw 2231 connected to the screw rotation driving member 224 to perform a syringe-like action to inject the softened rubber material into the injection nozzle 2234, and then enter the molding die through the discharge hole 521 for product molding.

[0088] (11) Mold clamping and molding

[0089] The mold clamping driving member 84 drives the male mold and the female mold of the molding die to perform mold clamping. The rubber material in the injection nozzle is injected into the molding die for molding. Heating elements are provided in the upper heat insulation plate 81 and the lower heat insulation plate 91. Under the control of the control system 6, the heating elements are heated, so that the upper heat insulation plate 81 and the lower heat insulation plate 91 increase in temperature, and the molding die connected between the upper heat insulation plate 81 and the lower heat insulation plate 91 is heated up to facilitate fluidized molding.

[0090] (12) Repeat the above steps to perform injection molding on the mold at the second station.

[0091] The control system 6 controls the lateral movement assembly 212, the longitudinal movement driving member 213, and the pushing and injecting driving member 221 to perform reverse longitudinal movement for resetting. Then repeat steps (1)-(12) to perform injection molding on the mold at the second station. In this way, one moving material preparation and injection mechanism 2 can be used to perform injection molding on multiple finished product molds in a cycle, improving production efficiency. Since the mold temperature controller 4 performs a temperature control process on the constant temperature runner plate 5, the rubber material in the moving material preparation and injection mechanism 2 and the constant temperature runner plate 5 can be in a constant temperature and softened state, so that it can be easily injected into the finished product mold for injection molding, preventing hardening after one injection and requiring waste discharge, avoiding waste of raw materials, improving the quality rate of products, and improving production efficiency.

[0092] In this specification, each embodiment is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method part.

[0093] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-station automatic rubber injection molding machine, characterized in that, It includes a machine base (1), a mobile material preparation and injection mechanism (2), a feeding mechanism (3), a mold temperature controller (4), several constant temperature runner plates (5), a control system (6), several molding molds and a mold pressing mechanism (7); the control system (6) controls the operation of the mobile material preparation and injection mechanism (2), the feeding mechanism (3), the mold temperature controller (4), and the mold pressing mechanism (7). The mobile material preparation and injection mechanism (2) is movably connected to the machine base (1). The feeding mechanism (3) includes a hopper (31), and the feeding mechanism (3) is installed on the mobile material preparation and injection mechanism (2) and is used to supply materials to the mobile material preparation and injection mechanism (2) for softening processing. The constant temperature runner plate (5) is installed on the mold pressing mechanism (7); the molding mold is installed on the mold pressing mechanism (7) and is located below the constant temperature runner plate (5). The mold pressing mechanism (7) is installed on the machine base (1) to press the molding mold. The mold temperature controller (4) is connected and cooperates with several constant temperature runner plates (5) and the mobile material preparation and injection mechanism (2) to control the temperature of the materials on the constant temperature runner plates (5) and the mobile material preparation and injection mechanism (2) so that the rubber materials in the mobile material preparation and injection mechanism (2) and the constant temperature runner plates (5) are always in a softened state; the control system (6) controls the mobile material preparation and injection mechanism (2) to move to any one of the constant temperature runner plates (5), injects the rubber material in the mobile material preparation and injection mechanism (2) in a constant temperature softened state into the constant temperature runner plate (5), and after the rubber material in the softened state is further thermostatically treated by the constant temperature runner plate (5), it is injected into the molding mold for product injection molding. After injection molding, the mobile material preparation and injection mechanism (2) moves to another constant temperature runner plate (5) for product injection molding in the molding mold.

2. The multi-station automatic rubber injection molding machine according to claim 1, wherein, The mobile material preparation and injection mechanism (2) includes a moving component (21) and an injection component (22), the injection component (22) is installed on the moving component (21), and the moving component (21) is installed on the machine base (1).

3. The multi-station automatic rubber injection molding machine according to claim 2, wherein The moving component (21) includes a moving base (211), a lateral moving component (212), and a longitudinal moving driving part (213). The lateral moving component (212) is installed at the bottom of the moving base (211) and is connected to the machine base (1), and the longitudinal moving driving part (213) is installed above the moving base (211) and is connected to the injection component (22).

4. The multi-station automatic rubber injection molding machine according to claim 3, wherein, The described lateral movement assembly (212) includes a lateral drive member (2121), a gear (2122), a rack (2123), a lateral slide rail (2124), and a lateral chute (2125). The lateral slide rail (2124) is installed on the machine base (1), the lateral chute (2125) is installed at the bottom of the moving base (211), the lateral chute (2125) is movably engaged with the lateral slide rail (2124), the lateral drive member (2121) is installed on the moving base (211), the gear (2122) is installed on the lateral drive member (2121), and the rack (2123) is installed at the bottom of the moving base (211) and meshes with the gear (2122).

5. The multi-station automatic rubber injection molding machine according to claim 4, characterized in that, The described injection assembly (22) includes a push injection drive member (221), a barrel (222), a screw assembly (223), a screw rotation drive member (224), and a temperature control chamber (225). The barrel (222) is installed outside the screw assembly (223), the barrel (222) is provided with a feed port (2221), the screw rotation drive member (224) is connected to the screw assembly (223) and can drive the screw assembly (223) to rotate and stir the material. The push injection drive member (221) is sleeved on the barrel (222), and the drive part of the push injection drive member (221) is connected to the screw rotation drive member (224) to drive the screw assembly (223) to move back and forth for material extrusion. The temperature control chamber (225) is arranged outside the barrel (222), and the temperature control chamber (225) is provided with a first water inlet (2251) and a first water outlet (2252) for connecting to the mold temperature controller (4).

6. The multi-station automatic rubber injection molding machine according to claim 5, wherein, The described injection assembly (22) further includes a resistance ruler (226) for controlling material storage, and the resistance ruler (226) is installed on the push injection drive member (221).

7. The multi-station automatic rubber injection molding machine according to claim 6, characterized in that, The described screw assembly (223) includes a screw (2231), a check ring (2232), a screw head (2233), and a nozzle (2234). The screw (2231), the check ring (2232), the screw head (2233), and the nozzle (2234) are all installed in the barrel (222). The screw (2231) is connected to the screw head (2233), the check ring (2232) is installed between the screw (2231) and the screw head (2233), and the nozzle (2234) is located in front of the screw head (2233).

8. The multi-station automatic rubber injection molding machine according to claim 7, characterized in that, The described constant temperature runner plate (5) is provided with a second water inlet (51), a second water outlet (52), an injection hole (53), a discharge hole (54), a water flow channel (55) and a material flow channel (56). The constant temperature runner plate (5) is installed on the mold pressing mechanism (7), and the second water inlet (51) and the second water outlet (52) are connected to the mold temperature controller (4).

9. The multi-station automatic rubber injection molding machine according to any one of claims 1-8, characterized in that, A top mold heating assembly (8) is provided below the constant temperature runner plate (5). The top mold heating assembly (8) includes a top heat insulation plate (81) and a top heating plate (82). The top heat insulation plate (81) is installed between the constant temperature runner plate (5) and the top heating plate (82), and heating elements are provided in the top heating plate (82).

10. The multi-station automatic rubber injection molding machine according to claim 9, characterized in that, A bottom mold heating assembly (9) is correspondingly provided below the top mold heating assembly (8). The bottom mold heating assembly (9) is installed on the mold pressing mechanism (7). The bottom mold heating assembly (9) includes a bottom heat insulation plate (91) and a bottom heating plate (92). The bottom heating plate (92) is installed on the bottom heat insulation plate (91), and heating elements are provided in the bottom heating plate (92). The molding die is installed between the top heating plate (82) and the bottom heating plate (92).

Images