CN115556300A - Multi-cavity rapid prototyping injection mold with high cooling efficiency and method of use - Google Patents

Abstract

The invention relates to the technical field of injection molding machines, and specifically discloses a multi-cavity rapid prototyping injection mold with high cooling efficiency and a method of use, including a crushing device, and a conveying device is arranged below the crushing device, and the conveying device is far away from the crushing device. One side of the device is provided with an injection molding mechanism, the injection molding mechanism includes a heating layer, a docking port is opened on one side of the heating layer, an injection molding cavity is opened in the middle of the heating layer, and an injection molding cavity is opened on the other side of the injection molding cavity. A plurality of injection molding holes, the side of the heating layer away from the docking port is provided with a molding structure, the outer casing of the molding structure is provided with a cooling box, and the center of the side of the molding structure away from the heating layer is fixedly provided with a first transmission rod, and the first transmission rod outer casing is provided with a thimble base. The injection mold improves the diversity of products, improves the efficiency of injection molding operations, saves power resources and water resources, is beneficial to environmental protection, and avoids unnecessary dredging work, thereby improving the efficiency of injection molding operations.

Description

Multi-cavity rapid prototyping injection mold with high cooling efficiency and method of use

technical field

The invention relates to the technical field of injection molding machines, and relates to a multi-cavity rapid-forming injection mold with high cooling efficiency and a use method.

Background technique

Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding molds. Divided into vertical, horizontal, all-electric and so on. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and makes it shoot out to fill the mold cavity. The injection system is one of the most important components of the injection molding machine. Generally, there are three main forms: plunger type, screw type, and screw pre-molded plunger injection type. The screw type is the most widely used at present. Its function is that in a cycle of the injection molding machine, a certain amount of plastic can be heated and plasticized within a specified time, and then melted by the screw under a certain pressure and speed. The plastic is injected into the cavity of the mold, and after the injection, the molten material injected into the cavity remains fixed. In the production process, if the product is relatively small and the number of products is relatively large, a multi-cavity mold is used, because it is difficult for a large product to have multiple cavities in one mold due to its volume, but one mold with multiple cavities can be produced at high speed.

However, when the traditional injection molding machine performs injection molding operations, due to the integrity of the mold, it can often only produce a single and fixed product, which cannot be combined and replaced. It can only be replaced after one product is produced. The injection molding production of the next product, in addition, the plastic needs to be melted into a liquid and injected into the mold, and then solidified by cooling, so as to be formed into the target product in the mold, for example, Chinese utility model patent CN210061890U discloses an injection mold cooling The device includes a bottom plate, a chute is opened on the top of the bottom plate, a slider is slidably connected to the inside of the chute, the top of the slider is welded with a first box, and the left side of the first box slides A supporting structure is connected, and a cooling structure is connected to the bottom inside the first box, and the cooling structure includes a blower, and an air inlet pipe of the blower communicates with the inside of the first box. The utility model makes the injection mold cooling device have the advantages of combined cooling and high cooling efficiency through the arrangement of the bottom plate, chute, slider, first box body, support structure, cooling structure, blower, cooling pipe, support rod and injection mold . However, the cooling device in the injection molding machine in the above-mentioned background technology is integrated with the mold, which consumes too much power during the moving process, and when the cooling device touches the heating device, it will affect each other, and the cooling device will affect the heating device to melt the plastic. , and the heat generated by the heating device to melt the plastic will affect the temperature of the cooling device, thereby affecting the cooling effect, which may cause insufficient cooling and solidification of the plastic in the mold, resulting in defective products.

Aiming at the technical problems existing in the related art, no effective solution has been proposed so far. Based on this, the present invention proposes a multi-cavity rapid prototyping injection mold with high cooling efficiency to solve the technical problems existing in the prior art.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a multi-cavity rapid prototyping injection mold with high cooling efficiency, which has the advantages of increasing the diversity of products and improving the work efficiency of injection molding operations, and solves the problem of single mold, low The slow cooling problem.

(2) Technical solution

In order to solve the above-mentioned technical problems of single mold and slow cooling rate, the present invention provides the following technical solutions:

The multi-cavity rapid prototyping injection mold with high cooling efficiency includes a crushing device, a conveying device is arranged under the crushing device, and an injection mechanism is arranged on the side of the conveying device away from the crushing device, and the injection molding mechanism includes A heating layer, one side of the heating layer is provided with a docking port, the middle of the heating layer is provided with an injection molding cavity, and the other side of the injection molding cavity is provided with a number of injection molding holes, and the heating layer is far away from the docking port. One side is provided with a molding structure, and the outer casing of the molding structure is provided with a cooling box, and the center of the side of the molding structure away from the heating layer is fixed with a first transmission rod, and the outer casing of the first transmission rod is provided with a thimble base, The side surface of the thimble base close to the molding structure is provided with a first thimble array, and the end of the thimble base away from the molding structure is covered with a first swivel ring, and the first swivel ring is far away from the molding structure Four limit transmission rods are arranged around one end of the four limit transmission rods, and the other ends of the four limit transmission rods are fixedly provided with a second swivel ring, and a second transmission rod is sleeved inside the second swivel ring. The end of the transmission rod close to the first transmission rod is covered with a rubber sleeve, the end of the second transmission rod close to the rubber sleeve is provided with a second thimble, and the inner sleeve of the second transmission rod is provided with a third transmission rod. The other end of the third transmission rod is fixedly provided with a forward and reverse motor, and the outside of the forward and reverse motor is fixedly provided with a motor fixing frame, and the end of the motor fixing frame far away from the forward and reverse motor is fixedly provided with a support board.

Preferably, there are a total of nine injection holes, the nine injection holes are arranged in a "ten" shape, the thimble base is in a "ten" shape, there are eight first thimbles in total, and the eight injection holes are arranged in a "ten" shape. The array of the first thimbles is arranged in a "ten" shape, the third transmission rod is moved between the second transmission rods through threaded connections, and the third transmission rod and the second thimbles are connected by welding fixed, the heating layer is fixedly connected to the four corners of the cooling box through screws and nuts.

Preferably, the pulverizing device includes a material inlet, the bottom of the material inlet is fixedly provided with a sealing cover, the bottom surface of the sealing cover is fixedly provided with a feeding barrel, and a crushing knife is provided below the sealing cover, A motor is fixedly arranged at the lower end of the crushing knife, a motor fixing frame is arranged outside the motor, and a filter screen is fixedly arranged outside the motor fixing frame.

Preferably, the transmission device includes a transmission tube, one end of the transmission tube is covered with a connecting collar, a screw transmission rod is arranged inside the transmission tube, and one end of the screw transmission rod away from the connection collar is fixedly provided with The transmission motor, the other end of the transmission motor is fixedly provided with a handle, the outer cover of the transmission motor is provided with a motor fixing plate, the middle of the motor fixing plate is fixedly provided with a slide rail, and a limiting plate is arranged inside the slide rail, so The limiting plate is located below the handle, and a conveying pipe fixing frame is fixedly arranged on one side of the bottom surface of the conveying pipe.

Preferably, the molding structure includes a mold bottom plate, a mold cavity fixing frame is fixedly arranged on a side of the mold bottom plate close to the heating layer, and a first mold cavity is fixedly arranged in the center of the mold cavity fixing frame, so that There are second mold cavities around the first mold cavity and on the mold cavity fixing frame. There are eight second mold cavities in total, and a second target mold is arranged in the second mold cavity. Both sides of the first mold cavity are provided with extruding blocks, the lower end of the first mold cavity is fixedly provided with a connecting threaded rod, and a third through hole is opened in the center of the connecting threaded rod, and the first The mold cavity is provided with a first target mold, and the first target mold is provided with a first through hole at one end of the second target mold close to the mold bottom plate, and the mold bottom plate corresponds to the first through hole. The positions are all provided with second through holes, the side of the first target mold and the second target mold close to the heating layer is fixedly provided with a mold top plate, and the side of the mold top plate close to the cooling box is opened with a A cross-shaped groove, where injection molding inlets are provided at positions corresponding to the injection molding holes in the cross-shaped groove.

Preferably, the cooling box includes a cooling box, a cross-shaped hollow is opened in the center of the cooling box, cold water inlets are opened at two corners of the end of the cooling box near the support plate, and the cooling box A water outlet is provided at the center of the side away from the support plate.

Preferably, the second ejector pin is aligned with the third through hole, the first ejector pin is aligned with the first through hole and the second through hole, and the first target mold is aligned at the heating The injection hole in the center of the layer, the eight second target molds are aligned with the remaining eight injection holes except the injection hole in the center of the heating layer.

Preferably, the shape of the mold bottom plate, the mold cavity fixing frame, and the cross-shaped hollow are the same, and they are all cross-shaped. The heating layer, the mold top plate and the cooling box pass through The screws and nuts at the four corners of the heating layer are fixed.

(3) Beneficial effects

Compared with the prior art, the present invention provides a multi-cavity rapid prototyping injection mold with high cooling efficiency, which has the following beneficial effects:

1. The multi-cavity rapid prototyping injection mold with high cooling efficiency, by rotating the first transmission rod, the first transmission rod can be disassembled from the connecting threaded rod. At this time, the mold bottom plate leaves the bottom of the second mold cavity, thereby The second target mold can be disassembled to replace other target molds. For the first target mold, since the bottom end of the first target mold and the first mold cavity are fixed by a block connection, it is necessary to press and squeeze The block squeezes the first target mold, and then deforms the bottom of the first target mold, so that it can break away from the clamping groove, and then the first target mold can be removed for replacement, and different target molds can also be used for injection molding at the same time. The flexibility and adaptability of the equipment are improved, and a variety of plastic products can be produced at the same time, and various combinations can be made according to production needs. On the basis of ensuring production efficiency, product diversity is improved.

2. The multi-cavity rapid prototyping injection mold with high cooling efficiency has a cross-shaped hollow through the center of the cooling box, so that the molding structure can completely enter the cooling range of the cooling box, thereby speeding up the cooling efficiency and improving the cooling efficiency. The solidification speed of the plastic, the two corners of the end of the cooling box close to the support plate are provided with cold water inlets, and the center of the cooling box away from the support plate is provided with a water outlet. The used cold water is discharged from the mouth, so that the temperature in the cooling box is always kept low, so that the temperature will not be affected by the heated plastic, and the cooling speed of the liquid plastic by the cold water can be increased as much as possible to ensure the cooling effect, shorten the injection molding cycle and reduce the The number of defective products can improve work efficiency.

3. The multi-cavity rapid prototyping injection mold with high cooling efficiency does not move with the mold through the cooling box, and there is a certain gap between the cooling box and the heating layer, so as to prevent the temperature of the heating layer used to melt the plastic from affecting the cooling box , thereby improving the utilization rate of cold water, avoiding the loss of heat, saving power resources and water resources, and benefiting the protection of the environment.

4. The multi-cavity rapid prototyping injection mold with high cooling efficiency, through the forward rotation of the reversing motor, drives the third transmission rod to rotate, and the third transmission rod drives the second transmission rod to rotate through the thread on the top, and then can Make the second transmission rod move towards the direction close to the third transmission rod, and because the rubber sleeve and the first transmission rod are interference fit, there is a great friction force between the rubber sleeve and the first transmission rod, thus It can prevent the second transmission rod from rotating itself in the process of advancing, thereby facilitating the threaded end of the third transmission rod to completely enter the second transmission rod, and the second transmission rod drives the first transmission rod under the drive of the third transmission rod Move toward the direction close to the third transmission rod, when the threaded end of the third transmission rod enters into the second transmission rod completely, the short push rod on the third transmission rod is against the second swivel, because the second swivel There is a certain space between the second transmission rod, so that the second swivel and the second transmission rod can move relative to each other, so that the second swivel moves toward the first transmission rod relative to the second transmission rod, thereby enabling Pushing the thimble base to move in the direction of the forming structure, so as to drive the first thimble to move in the direction of the forming structure, so that the first thimble enters the second target mold through the second through hole and the first through hole. Since the first transmission rod and the second transmission rod both move toward the direction of the third transmission rod, the mold bottom plate will move toward the direction of the third transmission rod together with the mold cavity fixing frame, thus forming a relative relationship with the first thimble. Movement, and then can make the first thimble can eject the plastic product of cooling and solidification molding from the second target mold, thereby the first target mold and the second target mold are emptied, when the molding structure is pushed into the tenth part of the cooling box again When the glyph is hollowed out, the first target mold and the second target mold are re-corresponded to the upper injection holes for the next wave of injection molding operations, thereby realizing continuous injection molding without stopping, thereby improving the efficiency of injection molding operations.

5. The multi-cavity rapid prototyping injection mold with high cooling efficiency drives the pulverizer to rotate through the motor, so that the plastic raw material block in the feeding barrel can be further pulverized, which is convenient for subsequent transmission and melting. There is a motor fixing frame, and a filter screen is fixed outside the motor fixing frame, so as to prevent large pieces of plastic materials that are difficult to melt from entering the conveying device, thereby avoiding blockage of the conveying device and unnecessary dredging work, thereby improving the efficiency of injection molding operations .

Description of drawings

Fig. 1 is one of three-dimensional structure schematic diagrams of the present invention;

Fig. 2 is the second three-dimensional structure schematic diagram of the present invention;

Fig. 3 is the schematic diagram of the three-dimensional structure of the injection molding mechanism of the present invention;

Fig. 4 is the overall explosion schematic diagram of pulverizing device of the present invention;

Fig. 5 is one of the overall explosion schematic diagrams of the conveying device of the present invention;

Fig. 6 is the second schematic diagram of the overall explosion of the conveying device of the present invention;

Figure 7 is a cross-sectional view of the delivery device of the present invention;

Fig. 8 is a sectional view of the injection molding mechanism of the present invention;

Fig. 9 is one of the overall explosion schematic diagrams of the injection molding mechanism of the present invention;

Fig. 10 is an enlarged view at A of Fig. 9 of the present invention;

Fig. 11 is an enlarged view at B of Fig. 12 of the present invention;

Figure 12 is the second schematic diagram of the overall explosion of the injection molding mechanism of the present invention;

Fig. 13 is a schematic exploded view of the whole of the present invention.

In the figure: 1, crushing device; 101, feed port; 102, sealing cover; 103, feed barrel; 104, crushing knife; 105, motor; 106, motor fixing frame; 107, filter screen; 2, transmission device; 201, transmission pipe; 202, connecting collar; 203, screw transmission rod; 204, transmission motor; 205, handle; 206, motor fixing plate; 207, slide rail; 208, limit plate; 209, transmission pipe fixing frame; 3. Injection mechanism; 301, heating layer; 302, injection cavity; 303, injection hole; 304, first transmission rod; 305, thimble base; 306, first thimble; 307, first swivel; 308, limit transmission Rod; 309, second swivel; 3010, second transmission rod; 3011, rubber sleeve; 3012, second thimble; 3013, third transmission rod; 3014, forward and reverse motor; 3015, motor fixing frame; 3016, support Plate; 3017, docking port; 4, molding structure; 401, mold bottom plate; 402, mold cavity fixing frame; 403, first mold cavity; 404, second mold cavity; 405, extrusion block; 406, connecting threaded rod 407, the first target mold; 408, the second target mold; 409, the first through hole; 4010, the second through hole; 4011, the third through hole; 4012, the mold top plate; 4013, the cross-shaped groove; 4014, Injection molding inlet; 5, cooling box; 501, cooling box body; 502, cross-shaped hollow; 503, cold water inlet; 504, water outlet.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figs. 1-13, the present embodiment discloses a multi-cavity rapid prototyping injection mold with high cooling efficiency, including a crushing device 1, a conveying device 2 is arranged below the crushing device 1, and the conveying device 2 is far away from one side of the crushing device 1 An injection molding mechanism 3 is provided on the side, and the injection molding mechanism 3 includes a heating layer 301. A docking port 3017 is provided on one side of the heating layer 301, and an injection molding cavity 302 is provided in the middle of the heating layer 301, so that the plastic material melted through the heating layer 301 will be The injection molding cavity 302 is filled, and the other side of the injection molding cavity 302 is provided with several injection molding holes 303, and the side of the heating layer 301 away from the docking port 3017 is provided with a molding structure 4, so that the plastic melted in the injection molding cavity 302 can pass through the injection molding holes 303 into the molding structure 4, the molding structure 4 is covered with a cooling box 5, so that the liquid plastic in the molding structure 4 can be cooled and solidified, so that the plastic can be quickly formed in the molding structure 4, and the molding structure 4 is far away from the heating layer The center of one side of 301 is fixed with a first transmission rod 304, so that the first transmission rod 304 can drive the forming structure 4 to move. The first transmission rod 304 is covered with a thimble base 305, and the thimble base 305 is close to one side of the forming structure 4. The side surface array is provided with a first thimble 306, so that the plastic product cooled and formed in the molding structure 4 can be pushed out. The end of the thimble base 305 away from the molding structure 4 is covered with a first swivel 307, and the first swivel 307 is away from the molding structure. One end of the structure 4 is surrounded by four limit transmission rods 308, and the other end of the four limit transmission rods 308 is fixedly provided with a second swivel 309, so that the first swivel 307, the second swivel 309 and the four The fixed connection between two limiting transmission rods 308 is used to limit the movement of the thimble base 305, and then the range of motion of the first thimble 306 can be limited. The second swivel 309 is sleeved with a second transmission rod 3010, and the second transmission rod 3010 is set inside the second swivel 309. The end of 3010 close to the first transmission rod 304 is covered with a rubber sleeve 3011, the rubber sleeve 3011 and the second transmission rod 3010 are fixedly connected to each other, and the rubber sleeve 3011 does not completely enter the first transmission rod 304 during the plastic cooling stage The end of the second transmission rod 3010 close to the rubber sleeve 3011 is provided with a second thimble 3012, so that the second thimble 3012 and the first thimble 306 can eject the plastic product cooled and formed in the molding structure 4, and the second transmission rod The inner sleeve of 3010 is provided with a third transmission rod 3013, and the other end of the third transmission rod 3013 is fixed with a forward and reverse motor 3014. When the forward and reverse motor 3014 rotates forward, the forward and reverse motor 3014 drives the third transmission rod 3013 Rotate, the third transmission rod 3013 drives the second transmission rod 3010 to rotate through the screw thread at the top, and then the second transmission rod 3010 can be moved towards the direction close to the third transmission rod 3013, and because the rubber sleeve 3011 and the first transmission rod 304 is an interference fit, so the rubber sleeve 3011 and the first transmission rod 3 There is a great friction force between 04, which can prevent the second transmission rod 3010 from rotating itself in the process of advancing, thereby facilitating the threaded end of the third transmission rod 3013 to completely enter the second transmission rod 3010, and the second transmission rod Driven by the third transmission rod 3013, 3010 drives the first transmission rod 304 to move in a direction close to the third transmission rod 3013. When the top thread of the third transmission rod 3013 is in full contact with the thread in the second transmission rod 3010, that is When the second transmission rod 3010 is in contact with the non-threaded part of the third transmission rod 3013, since the second transmission rod 3010 can no longer move in the direction of the third transmission rod 3013, the second transmission rod 3010 drives the rubber sleeve 3011 in the first transmission rod 3011. The rod 304 is self-rotating and slipping. When the forward and reverse motor 3014 rotates in the opposite direction, the forward and reverse motor 3014 drives the third transmission rod 3013 to rotate, and the third transmission rod 3013 drives the second transmission rod 3010 to rotate through the thread on the top, and then The second transmission rod 3010 can be moved away from the third transmission rod 3013. Since the rubber sleeve 3011 and the first transmission rod 304 are interference fit, there is a pole between the rubber sleeve 3011 and the first transmission rod 304. Large frictional force, thereby can prevent the second transmission rod 3010 from rotating itself in the process of advancing, and then facilitate the threaded end of the third transmission rod 3013 to come out from the second transmission rod 3010, the second transmission rod 3010 is in the third transmission rod Driven by 3013, the first transmission rod 304 is driven to move away from the third transmission rod 3013, and the forward and reverse motor 3014 is fixed with a motor fixing frame 3015, and the motor fixing frame 3015 is fixed at one end away from the forward and reverse motor 3014. There is a support plate 3016. In addition, in a specific application, there is a certain space at the connection between the second swivel ring 309 and the second transmission rod 3010. The outer surface of one end of the transmission rod 3013 close to the second transmission rod 3010 is provided with a short push rod, so that when the second transmission rod 3010 moves in the direction of the third transmission rod 3013, the short push rod can resist the second swivel 309, Therefore, the second swivel ring 309 can move relative to the second transmission rod 3010 , and then the second swivel ring 309 can move toward the first transmission rod 304 relative to the second transmission rod 3010 .

Further, there are nine injection holes 303 in total, and the nine injection holes 303 are arranged in a "ten" shape, the thimble base 305 is in the shape of a "ten", there are eight first thimbles 306 in total, and eight first thimbles 306 are arrayed Arranged in a "ten" shape, the third transmission rod 3013 is moved between the second transmission rods 3010 through threaded connection, so that the transmission between the threads can make the second transmission rod 3010 move in the direction of the third transmission rod 3013 Up movement, the third transmission rod 3013 and the second thimble 3012 are fixed by welding, so that the second thimble 3012 and the third transmission rod 3013 can move synchronously, and then can be connected with the second transmission rod 3010 and the first transmission rod 304 Relative movement is generated, and the heating layer 301 is fixedly connected to the four corners of the cooling box 5 through screws and nuts.

Further, the pulverizing device 1 includes a material inlet 101, the bottom of the material inlet 101 is fixedly provided with a sealing cover 102, the bottom surface of the sealing cover 102 is fixedly provided with a feeding barrel 103, and the bottom of the sealing cover 102 is provided with a crushing knife 104, The lower end of the pulverizer 104 is fixedly provided with a motor 105, and the motor 105 drives the pulverizer 104 to rotate, thereby further pulverizing the plastic raw material blocks positioned in the feeding barrel 103, and then facilitating subsequent transmission and melting. The motor fixing frame 106 is fixed with a filter screen 107 outside the motor fixing frame 106, so as to prevent large pieces of plastic materials that are difficult to melt from entering the conveying device 2, and then avoid blocking the conveying device 2.

Further, the delivery device 2 includes a delivery tube 201, one end of the delivery tube 201 is provided with a connecting collar 202, the delivery tube 201 is provided with a screw transmission rod 203, and the end of the screw delivery rod 203 away from the connection collar 202 is fixedly provided with a transmission Motor 204, the other end of transmission motor 204 is fixedly provided with handle 205, and the outer cover of transmission motor 204 is provided with motor fixed plate 206, and the middle of motor fixed plate 206 is fixedly provided with slide rail 207, and limit plate 208 is arranged in slide rail 207, limits The positioning plate 208 is located below the handle 205 , and a delivery tube fixing frame 209 is fixedly installed on one side of the bottom surface of the delivery tube 201 .

Further, the molding structure 4 includes a mold bottom plate 401, a mold cavity fixing frame 402 is fixedly installed on the side of the mold bottom plate 401 close to the heating layer 301, and a first mold cavity 403 is fixedly installed in the center of the mold cavity fixing frame 402. Around the mold cavity 403 and on the mold cavity fixed frame 402, there are second mold cavities 404, and there are eight second mold cavities 404 in total. A second target mold 408 is arranged in the second mold cavity 404, and the first mold cavity Both sides of the cavity 403 are provided with extruding blocks 405, the lower end of the first mold cavity 403 is fixedly provided with a connecting threaded rod 406, and the center of the connecting threaded rod 406 is provided with a third through hole 4011, and the first mold cavity 403 is provided with There is a first target mold 407, and the first target mold 407 is provided with a first through hole 409 at one end of the second target mold 408 close to the mold base plate 401, and the position of the mold base plate 401 corresponding to the first through hole 409 is provided with a second through hole. The hole 4010, the first target mold 407 and the second target mold 408 are fixed with a mold top plate 4012 on the side close to the heating layer 301, and the side of the mold top plate 4012 close to the cooling box 5 is provided with a cross-shaped groove 4013, the cross-shaped groove Injection inlets 4014 are provided at positions corresponding to injection holes 303 in 4013 .

Further, the cooling box 5 includes a cooling box body 501, and the center of the cooling box body 501 is provided with a cross-shaped hollow 502, so that the molding structure 4 can completely enter the cooling range of the cooling box 5, thereby speeding up the cooling efficiency and improving the plastic Solidification speed, the two corners of the cooling box 501 close to the end of the support plate 3016 are provided with cold water inlets 503, and the center of the cooling box 501 away from the side of the support plate 3016 is provided with a water outlet 504, through continuous injection from the cold water inlet 503 cold water, and continuously discharge the used cold water from the water outlet 504, so that the temperature in the cooling box 501 is always kept low, so that the temperature will not be affected by the heated plastic. In addition, in a specific application, there is a certain gap between the cooling box 5 and the heating layer 301, so as to prevent the temperature of the heating layer 301 used to melt the plastic from affecting the cooling box 5, thereby improving the utilization rate of cold water and avoiding heat loss. The power resource and water resource are saved, which is beneficial to the protection of the environment.

Further, the second thimble 3012 is aligned with the third through hole 4011, the first thimble 306 is aligned with the first through hole 409 and the second through hole 4010, the first target mold 407 is aligned with the injection hole 303 in the center of the heating layer 301, The eight second target molds 408 are aligned with the remaining eight injection holes 303 except the injection hole 303 at the center of the heating layer 301 .

Further, the mold bottom plate 401, the mold cavity fixing frame 402, and the remaining cross-shaped hollows 502 have the same shape, and are all cross-shaped. The heating layer 301, the mold top plate 4012 and the cooling box 501 are passed through the screws at the four corners of the heating layer 301. Nuts are fixed.

Working principle: when in use, the plastic raw material fragments enter the material inlet 103 from the feed port 101, and the motor 105 drives the crushing knife 104 to further crush the plastic fragments, thereby facilitating the transmission by the screw transmission rod 203 in the conveying device 2 , to prevent the plastic fragments from being too large to block the conveying pipe 201, the filter screen 107 can screen the plastic fragments entering the conveying device 2, so as to prevent large pieces of plastic materials that are difficult to melt from entering the conveying device 2, and then avoid blocking the conveying Device 2, at this time, the limit plate 208 is placed in the slide rail 207, so that a fixed point can be provided for the transmission motor 204 by limiting the rotation of the handle 205, so that the transmission motor 204 can drive the screw transmission rod 203 to rotate at a constant speed, and then Ensure that the plastic fragments can be transported in the direction of the connecting collar 202 at a uniform speed. When the transportation speed of the plastic fragments needs to be adjusted, the limit plate 208 can be removed from the slide rail 207, and the handle 205 can be held for manual adjustment. After the fragments are transported to the docking port 3017, under the heating of the heating layer 301, the plastic fragments melt into a liquid state, enter the injection cavity 302, and then enter the forming structure 4 through the injection holes 303 arranged in a cross shape , since the central injection hole 303 corresponds to the first target mold 403, and the surrounding eight injection holes 303 correspond to the second target mold 404, so the liquid plastics will respectively enter the first target mold 403 and the eight second target molds 404, Since the entire molding structure 4 is located in the cross-shaped hollow 502 of the cooling box 5, and cold water enters from the two cold water inlets 503 of the cooling box 5, fills the entire cooling box body 501 from bottom to top and then flows out from the water outlet 504, so it is located in The liquid plastic in the molding structure 4 will accelerate solidification due to the low temperature, so that the liquid plastic can be rapidly formed in the first target mold 403 and the eight second target molds 404, and at this time, the first target mold can be pushed toward the third transmission rod 3013. The transmission rod 304, so that the internal thread cavity of the second transmission rod 3010 is in contact with the thread of the third transmission rod 3013. At this time, the forward and reverse motor 3014 rotates forward. When the forward and reverse motor 3014 rotates forward, the forward and reverse The motor 3014 drives the third transmission rod 3013 to rotate, and the third transmission rod 3013 drives the second transmission rod 3010 to rotate through the thread on the top, so that the second transmission rod 3010 can move in a direction close to the third transmission rod 3013, and because There is an interference fit between the rubber sleeve 3011 and the first transmission rod 304, so there is a great friction force between the rubber sleeve 3011 and the first transmission rod 304, thereby preventing the second transmission rod 3010 from rotating by itself in the process of advancing , so as to facilitate the threaded end of the third transmission rod 3013 to completely enter the second transmission rod 3010, and the second transmission rod 3010 drives the first transmission rod 304 to the side of the third transmission rod 3013 driven by the third transmission rod 3013 Direction movement, when the thread on the top of the third transmission rod 3013 is fully connected with the thread in the second transmission rod 3010 Contact, that is, when the second transmission rod 3010 is in contact with the non-threaded part of the third transmission rod 3013, since the second transmission rod 3010 can no longer move in the direction of the third transmission rod 3013, the second transmission rod 3010 drives the rubber sleeve 3011 in the The first transmission rod 304 rotates and slips inside itself, and no longer drives the first transmission rod 304 to move in the direction of the third transmission rod 3013, and when the threaded end of the third transmission rod 3013 enters the second transmission rod 3010 completely, The short push rod on the third transmission rod 3013 is against the second swivel 309, because there is a certain space between the second swivel 309 and the second transmission rod 3010, so that the second swivel 309 and the second transmission can be connected. The rod 3010 produces relative motion, and then the second swivel 309 moves toward the first transmission rod 304 relative to the second transmission rod 3010, thereby pushing the thimble base 305 to move toward the forming structure 4, thereby driving the eight first transmission rods. An ejector pin 306 moves toward the forming structure 4, and then the first ejector pin 306 enters the second target mold 408 through the second through hole 4010 and the first through hole 409. At this time, due to the first transmission rod 304 and the first The two transmission rods 3010 both move towards the third transmission rod 3013, so the mold bottom plate 401 will move towards the third transmission rod 3013 together with the mold cavity fixing frame 403, thereby generating relative motion with the first thimble 306, Furthermore, the first ejector pin 306 can eject the cooled and solidified plastic product from the second target mold 408, and at the same time, the second ejector pin 3012 enters the first target mold 407 under the push of the third delivery rod 3013, thereby The plastic products cooled and molded in the first target mold 407 can be ejected from the first target mold 407, and after all the plastic products to be formed come out of the first target mold 407 and the second target mold 408, the forward and reverse motor 3014 Reverse rotation, when the reversing motor 3014 rotates in the opposite direction, the reversing motor 3014 drives the third transmission rod 3013 to rotate, and the third transmission rod 3013 drives the second transmission rod 3010 to rotate through the screw thread on the top, and then the third transmission rod 3013 can be driven to rotate, so that the first The second transmission rod 3010 moves away from the third transmission rod 3013. Since the rubber sleeve 3011 and the first transmission rod 304 are in an interference fit, there is great friction between the rubber sleeve 3011 and the first transmission rod 304. force, so as to prevent the second transmission rod 3010 from rotating itself in the process of advancing, and then facilitate the threaded end of the third transmission rod 3013 to come out from the second transmission rod 3010, and the second transmission rod 3010 is driven by the third transmission rod 3013 Then drive the first transmission rod 304 to move away from the third transmission rod 3013 until the third transmission rod 3013 is completely separated from the second transmission rod 3010. Push against the mold top plate 4012 again, so that the first target mold 407 and the second The target mold 408 is re-aligned with the injection hole 303, and the above steps are repeated for the next round of injection molding. In addition, in specific applications, the first target mold 407 and the second target mold 408 can be replaced at any time according to the shape of the target part. The replacement steps are as follows : Rotate the first transmission rod 304 so that the first transmission rod 304 can be dismounted from the connecting threaded rod 406, and now the mold base plate 401 leaves the bottom of the second mold cavity 404, so that the second target mold 408 can be disassembled, thereby Replace other target molds, and for the first target mold 407, since the bottom end of the first target mold 407 and the first mold cavity 403 are fixed through the block connection, it is necessary to press the extrusion block 405 to the first target mold. 407 is extruded, and then the bottom of the first target mold 407 is deformed, so that it can break away from the slot, and then the first target mold 407 can be removed for replacement.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. Many die cavities rapid prototyping injection mold with high cooling efficiency, including reducing mechanism (1), its characterized in that: the utility model discloses a grinding device, including reducing mechanism (1), injection molding mechanism (3) including zone of heating (301), interface (3017) have been seted up to one side of zone of heating (301), injection molding chamber (302) have been seted up to the centre of zone of heating (301), a plurality of injection molding hole (303) have been seted up to the opposite side of injection molding chamber (302), zone of heating (301) keep away from one side of interface (3017) is provided with shaping structure (4), shaping structure (4) overcoat is equipped with cooler bin (5), shaping structure (4) are kept away from one side center of zone of heating (301) is fixed and are provided with first transfer line (304), first transfer line (304) overcoat is equipped with thimble base (305), thimble base (305) are close to a side surface array of shaping structure (4) is provided with first thimble (306), thimble base (305) keep away from one end of shaping structure (4) is equipped with first change ring (307), first change ring (307) are kept away from to first change ring (307), the one end of shaping structure (308) is provided with four limit structure (309), the utility model discloses a motor, including first change ring (309), second drive pole (3010) are close to the one end overcoat of first drive pole (304) is equipped with rubber sleeve (3011), second drive pole (3010) are close to the one end of rubber sleeve (3011) is run through and is provided with second thimble (3012), second drive pole (3010) endotheca is equipped with third drive pole (3013), the other end of third drive pole (3013) is fixed and is provided with just reversing motor (3014), just reversing motor (3014) external fixation is provided with motor mount (3015), motor mount (3015) are kept away from the one end fixed backup pad (3016) that are provided with of just reversing motor (3014).

2. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in claim 1, wherein: the utility model discloses a cooling box, including injection molding hole (303), injection molding hole (303) are total nine, nine injection molding hole (303) array arranges for "ten" font, thimble base (3015) are "ten" font, first thimble (306) have eight totally, eight first thimble (306) array arranges for "ten" font, third transfer line (3013) in move about through threaded connection between second transfer line (3010), third transfer line (3013) with through welded fastening between second thimble (3012), zone of heating (301) with the four corners of cooler bin (5) carry out fixed connection through the screw nut.

3. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in claim 1 or 2, wherein: reducing mechanism (1) is including pan feeding mouth (101), the bottom mounting of pan feeding mouth (101) is provided with sealed lid (102), the fixed charging bucket (103) that are provided with in bottom surface of sealed lid (102), the below of sealed lid (102) is provided with smashes sword (104), the low end mounting of smashing sword (104) is provided with motor (105), motor (105) overcoat is equipped with the fixed frame of motor (106), the fixed frame of motor (106) external fixation is provided with filter screen (107).

4. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in any one of claims 1-3, wherein: conveyer (2) are including conveying pipe (201), the one end overcoat of conveying pipe (201) is equipped with the connection sleeve ring (202), be provided with spiral conveying rod (203) in conveying pipe (201), spiral conveying rod (203) are kept away from the fixed conveying motor (204) that is provided with of one end of the connection sleeve ring (202), the fixed handle (205) that is provided with of the other end of conveying motor (204), conveying motor (204) overcoat is equipped with motor fixed plate (206), the centre of motor fixed plate (206) is fixed and is provided with slide rail (207), be provided with limiting plate (208) in slide rail (207), limiting plate (208) are located the below of handle (205), the fixed conveying pipe mount (209) that is provided with in bottom surface one side of conveying pipe (201).

5. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in any one of claims 1-4, wherein: the molding structure (4) comprises a mold base plate (401), a mold cavity fixing frame (402) is fixedly arranged on one side, close to the heating layer (301), of the mold base plate (401), a first mold cavity (403) is fixedly arranged at the center of the mold cavity fixing frame (402), a second mold cavity (404) is arranged on the mold cavity fixing frame (402) in a surrounding mode around the first mold cavity (403), eight second mold cavities (404) are arranged in total, a second target mold (408) is arranged in the second mold cavity (404), extrusion blocks (405) are arranged on two sides of the first mold cavity (403), a connecting threaded rod (406) is fixedly arranged at the lower end of the first mold cavity (403), a third through hole (4011) is formed in the center of the connecting threaded rod (406), a first target mold (407) is arranged in the first mold cavity (403), a first through hole (409) is formed in one end, close to the mold base plate (401), of the first target mold cavity (407), a second through hole (409) is formed in one end, close to the mold base plate (408), a first through hole (4011) is formed in the corresponding to the mold base plate (401), a first through hole (407), and a second through hole (4010) is formed in one side of the first target mold cavity (403), and a second through hole (4010) is formed in one side of the second target mold (407), mould roof (4012) are close to cross recess (4013) have been seted up to one side of cooler bin (5), correspond in cross recess (4013) the entry (4014) of moulding plastics have all been seted up to the position of moulding plastics hole (303).

6. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in claim 1, wherein: cooling box (5) are including cooling box (501), cross fretwork (502) have been seted up at the center of cooling box (501), cold water entry (503) have all been seted up in two corners of cooling box (501) near the one end of backup pad (3016), delivery port (504) have been seted up at the center of backup pad (3016) one side is kept away from in cooling box (501).

7. The multi-cavity rapid prototyping injection mold with high cooling efficiency of claim 5, wherein: the second thimble (3012) is aligned with the third through hole (4011), the first thimble (306) is aligned with the first through hole (409) and the second through hole (4010), the first target mold (407) is aligned with an injection molding hole (303) located at the center of the heating layer (301), and the eight second target molds (408) are aligned with the eight injection molding holes (303) except the injection molding hole (303) at the center of the heating layer (301).

8. The multi-cavity rapid prototyping injection mold with high cooling efficiency as set forth in claim 6, wherein: mould bottom plate (401), mould cavity mount (402), surplus the shape of cross fretwork (502) is unanimous, and is the cross, zone of heating (301) mould roof (4012) with pass through between cooling box (501) the screw nut in zone of heating (301) four corners is fixed.

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