An injection molding equipment for plastic molds

Abstract

This invention relates to the field of plastic recycling technology, and more particularly to an injection molding equipment for plastic molds, comprising: an equipment frame, an upper mold, a lower mold parallel to the upper mold, and a drive unit connected to the upper mold. The surface of the lower mold is fitted with a storage mechanism fixedly connected to the equipment frame, a collection mechanism disposed inside the storage mechanism, and a guide mechanism. Based on the synergy of multiple components in the storage mechanism, when the upper mold moves, an elastic rod clamps the flash waste material after molding. The movement of the upper mold causes a cutting blade to cut the flash, which then falls onto a flipping plate via a guide plate. The movement of the material cylinder drives a push rod, causing the flipping plate to rotate and discharge the flash waste into a storage box, thus completing the automatic recycling of the flash waste. Furthermore, an air jet pipe directs air towards the flipped plate, blowing the flash waste adhering to its surface into the storage box.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, and in particular to an injection molding equipment for plastic molds. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Its advantages include high production speed and efficiency, automated operation, a wide variety of colors and shapes (from simple to complex), and sizes ranging from large to small. It also produces precise dimensions, facilitates product updates, and can create complex parts. Injection molding is suitable for mass production and molding of complex-shaped products. It involves injecting fully molten plastic material, stirred by a screw at a specific temperature, into a mold cavity under high pressure, and then cooling and solidifying to obtain the molded product. This method is suitable for the mass production of complex parts and is one of the important processing methods.

[0003] A search revealed an invention patent (Publication No.: CN120572687B) disclosing a recycled plastic injection mold, comprising a fixed base, a fixed mold, an injection cavity, an injection hole, a cavity cover, an injection barrel module, a stirring shaft, and an inclined cone. In this invention, when using recycled plastic for injection molding, the injection barrel module delivers molten recycled plastic into the injection cavity. The stirring shaft uniformly mixes the molten recycled plastic entering the injection cavity, evenly distributing the melt pressure within the molten recycled plastic. The molten recycled plastic then enters the mold cavity of the fixed mold through the injection hole, enhancing the flow effect of the recycled plastic melt during the injection molding process and effectively improving the quality of the injection molded product. Simultaneously, the stirring shaft drives the inclined cone to rotate, using the inclined cone to adjust and shield the injection hole, cyclically adjusting the injection flow rate and effectively reducing the impact of multiple injection holes on the injection pressure. This achieves uniform injection of the recycled plastic melt into the mold, effectively improving the injection molding effect of recycled plastic.

[0004] However, the existing technology described above still has the following problems: Although the use of an inclined cone to shield and adjust the injection hole, cyclically adjusting the injection flow rate, and effectively reducing the impact of multiple injection holes on injection pressure can achieve uniform injection of recycled plastic melt and improve the injection molding effect of recycled plastic, the existing technology cannot automatically trim flash waste. The generated flash waste needs to be manually cut, trimmed after molding, and the collected flash waste needs to be heated and melted before being fed back into the barrel for recycling. This makes it impossible to quickly recover the flash waste generated during injection molding. Furthermore, due to the influence of the upper mold temperature, the flash waste may be reheated to a preliminary melting state after cooling, and the flash waste will adhere to the collection component, making it impossible to automatically recover the flash waste. Therefore, after the plastic mold is injection molded by the injection molding equipment, the subsequent operation is inconvenient, affecting the production efficiency of injection molding.

[0005] Therefore, the present invention provides an injection molding equipment for plastic molds to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and to propose an injection molding equipment for plastic molds.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An injection molding device for plastic molds includes: a frame, an upper mold, a lower mold parallel to the upper mold, and a drive unit connected to the upper mold. The surface of the lower mold is fitted with a storage mechanism fixedly connected to the frame, a collection mechanism disposed inside the storage mechanism, and a guide mechanism. The storage mechanism includes a storage box fixedly fitted onto the outer surface of the lower mold, and the storage box is fixedly connected to the equipment frame. A guide plate is fixedly connected inside the storage box. A flip plate is attached to one side of the guide plate, and the lower surface of the flip plate is rotatably connected to the inner bottom wall of the storage box via a pin. Push rods are attached to both sides of the lower surface of the flip plate, and the push rods are slidably connected to the inner bottom wall of the storage box. A diversion pipe is fixedly connected inside the storage box, and the four ends of the diversion pipe are respectively coaxially arranged with the push rods. An air supply pipe is fixedly connected to the surface of the diversion pipe.

[0008] Preferably, the storage mechanism further includes a hollow box fixedly connected to one end of the gas supply pipe, and the two ends of the gas supply pipe are respectively connected to the hollow box and the diversion pipe. An extrusion plate is slidably connected inside the hollow box, and one side of the extrusion plate is fixedly connected to the drive unit. The hollow box is fixedly connected to the equipment frame.

[0009] Preferably, the storage mechanism further includes a cutting blade slidably connected inside the lower mold, and a horizontally extended blade is vertically arranged on the outer side of the cutting blade. The lower surface of the upper mold is fixedly connected with elastic rods in a rectangular array, and the elastic rods are arranged perpendicular to the lower mold. A gap is provided between every two adjacent elastic rods, and the gap is the same as the thickness of the cutting blade.

[0010] Preferably, the guiding mechanism includes two sets of air jet pipes fixedly disposed on both sides of the upper mold. A three-way pipe is fixedly connected to the surface of the two air jet pipes. An air bladder is fixedly connected to one end of the three-way pipe, and the air bladder is fixedly connected to the equipment frame.

[0011] Preferably, the guiding mechanism further includes a support rod fixedly connected to one side of the equipment frame. Steel wire ropes are sleeved on both sides of the surface of the support rod. One end of the two steel wire ropes is fixedly connected to a sliding plate, and the sliding plate is slidably disposed inside the equipment frame. Two parallel telescopic rods are fixedly connected to the lower surface of the sliding plate, and one end of the telescopic rod is fixedly connected to a pressing block.

[0012] Preferably, the guiding mechanism further includes a drive plate that is fixedly connected to one end of the two steel wire ropes, and the drive plate is fixedly connected to the drive unit. The three-way pipe slides through the interior of the drive plate, and the steel wire ropes are slidably arranged with the airbag, the sliding plate, and the equipment frame.

[0013] Preferably, the drive unit includes a linear drive mechanism fixedly connected to the equipment frame, the output end of the linear drive mechanism is fixedly connected to a material cylinder, and the output end of the material cylinder is fixedly connected to the upper mold. The material cylinder communicates with the upper mold, and both the extrusion plate and the drive plate are fixedly connected to the material cylinder.

[0014] Preferably, the collecting mechanism includes two collecting plates slidably connected inside the storage box. A semi-circular rack is fixedly connected to the outer side of each collecting plate. The semi-circular rack is slidably disposed inside the storage box, and the two semi-circular racks are staggered. A guide groove for sliding of the semi-circular rack is provided inside the storage box.

[0015] Preferably, the collection mechanism further includes two drive gears that are rotatably disposed on the outer arc surface of the storage box and respectively mesh with two semi-circular racks. The surface of the drive gears is fixedly connected to a linkage rod, and the linkage rod is rotatably connected to the equipment frame. The surface of each linkage rod is fixedly connected to a linkage gear, and the surface of the linkage gear is meshed with a gear set.

[0016] Preferably, the collecting mechanism further includes a toothed plate that meshes with the gear set, and the toothed plate is fixedly connected to the sliding plate. A protective box that is sleeved on the surface of the gear set is fixedly connected to the inner side of the equipment frame, and the linkage rod and the toothed plate are rotatably connected to the protective box.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Based on the collaboration of multiple components in the storage mechanism, after the upper and lower molds complete the injection molding, the upper mold moves, causing the elastic rod to clamp the flash waste of the molded material. Through the movement of the upper mold, the cutting blade cuts the flash, and the flash falls onto the flipping plate through the guide plate. The movement of the material cylinder drives the push rod to move, causing the flipping plate to rotate and discharge the flash waste into the storage box, thus completing the automatic recycling of the flash waste. Furthermore, the setting of the horizontally extended blade cuts the flash waste, preventing the flash waste from forming a whole and getting stuck on the lower mold, which would affect the collection of flash waste and the continuous injection molding of the upper and lower molds. 2. Through the coordinated operation of multiple components in the guiding mechanism, when the flash waste falls onto the flipping plate and the material cylinder moves upward, the material cylinder drives the drive plate to move, which in turn causes the wire rope to drive the sliding plate to move downward. This causes the extrusion block to move along with the material, compressing the airbag. As the airbag deforms, the air in the airbag enters the air jet pipe through the three-way pipe. The air jet pipe blows the air onto the flipping plate after it has flipped, blowing the flash waste attached to its surface into the storage box. This avoids the problem that the flash waste melts due to the high temperature of the upper mold and thus adheres to the flipping plate and cannot be discharged into the storage box. 3. Through the coordinated action of multiple components in the collection mechanism, when the extrusion block squeezes the airbag, the reaction force generated by the airbag drives the telescopic rod to retract. This allows the sliding plate to continue moving downwards while the extrusion block squeezes the airbag, thereby causing the toothed plate to drive the gear set to rotate. This causes the two linkage rods to rotate in opposite directions, which in turn drives the drive gear to rotate. This causes the two semi-circular racks to rotate in opposite directions, driving the two collection plates to slide in opposite directions in the collection box. This concentrates the flash waste in the collection box into the discharge trough, completing the collection and discharge of the flash waste. 4. The storage mechanism, collection mechanism and guiding mechanism in this equipment are all driven by the power of the drive unit, eliminating the need for additional power sources and thus reducing the cost of the equipment. Attached Figure Description

[0018] Figure 1 This is a front structural diagram of an injection molding equipment for plastic molds proposed in this invention; Figure 2 This is a side view of an injection molding equipment for plastic molds proposed in this invention. Figure 3 This is a schematic diagram of the drive unit and storage mechanism of an injection molding equipment for plastic molds proposed in this invention; Figure 4 This is a schematic diagram of the material barrel, storage box, and guiding mechanism of an injection molding equipment for plastic molds proposed in this invention. Figure 5 This is a schematic diagram of the upper mold, lower mold, elastic rod, and storage mechanism of an injection molding equipment for plastic molds proposed in this invention. Figure 6 This is a schematic diagram of the storage mechanism structure of an injection molding equipment for plastic molds proposed in this invention; Figure 7 This is a schematic diagram of the collection mechanism and guiding mechanism of an injection molding equipment for plastic molds proposed in this invention; Figure 8 This is a schematic diagram of the airbag, extrusion block, sliding plate, protective box, and jet pipe structure of an injection molding equipment for plastic molds proposed in this invention. Figure 9 This is a schematic diagram of the collection mechanism structure of an injection molding equipment for plastic molds proposed in this invention; Figure 10 This invention proposes an injection molding equipment for plastic molds. Figure 9 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Equipment frame; 2. Upper mold; 3. Lower mold; 4. Storage mechanism; 401. Storage box; 402. Guide plate; 403. Flipping plate; 404. Push rod; 405. Diverter pipe; 406. Gas supply pipe; 407. Hollow box; 408. Extrusion plate; 409. Cutting blade; 410. Elastic rod; 5. Collection mechanism; 501. Collection plate; 502. Semicircular rack; 503. Drive gear; 504. Linkage rod; 505. Linkage gear; 506. Gear set; 507. Gear plate; 508. Protective box; 6. Guide mechanism; 601. Jet pipe; 602. T-pipe; 603. Airbag; 604. Support rod; 605. Wire rope; 606. Sliding plate; 607. Telescopic rod; 608. Extrusion block; 609. Drive plate; 7. Drive unit; 701. Linear drive mechanism; 702. Material cylinder. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0022] Reference Figures 1-10 A plastic mold injection molding equipment includes: an equipment frame 1, an upper mold 2, a lower mold 3 parallel to the upper mold 2, and a drive unit 7 connected to the upper mold 2. The surface of the lower mold 3 is fitted with a storage mechanism 4 fixedly connected to the equipment frame 1, a collection mechanism 5 disposed inside the storage mechanism 4, and a guide mechanism 6. The storage mechanism 4 also includes a cutting blade 409 slidably connected inside the lower mold 3, and a horizontally extended blade is vertically arranged on the outer side of the cutting blade 409. The lower surface of the upper mold 2 is fixedly connected with elastic rods 410 in a rectangular array, and the elastic rods 410 are arranged perpendicularly to the lower mold 3. A gap is provided between every two adjacent elastic rods 410, and the gap is the same as the thickness of the cutting blade 409, which is used to press against both sides of the gap, so that when the cutting blade 409 cuts the flash through the gap, the elastic rods 410 can clamp the two sides of the flash cut. Among them, the horizontally extended blade is a thin sheet that extends horizontally from the side of the cutting blade 409. It is set perpendicular to the cutting blade 409 and parallel to the upper mold 2. Therefore, it is parallel to the flash waste and is used to cut the flash waste into multiple segments to prevent it from forming a ring-shaped whole. The cutting edge of the cutting blade 409 faces the upper mold 2. The flash formed after the material is injected is formed at the joint between the upper mold 2 and the lower mold 3. The cutting edge of the cutting blade 409 facing the upper mold 2 can cut the flash and cut it off by horizontally extending the blade. The lower mold 3 has a storage groove on its surface that provides sliding space for the cutting blade 409. A spring assembly is installed in the storage groove. The initial state of the cutting blade 409 is that it extends out of the storage groove and its top is higher than the upper surface of the lower mold 3. When the upper mold 2 moves downward, the upper mold 2 contacts the cutting blade 409 and drives the cutting blade 409 to move by the force applied by the upper mold 2, compressing the spring assembly so that the top of the cutting blade 409 is parallel to the upper surface of the lower mold 3. When the upper mold 2 and the lower mold 3 are injection molding, the cutting blade 409 is in close contact with the upper mold 2 and remains parallel to the lower mold 3, so as not to affect the injection molding equipment to injection mold the material. Among them, the spring force of the cutting blade 409 and the spring assembly are matched with the mold opening stroke of the upper mold 2 and the clamping force of the elastic rod 410. When the mold is in place, the cutting force is just enough to cut off the flash, without damaging the product or jamming the blade. Furthermore, thanks to the storage slot, the horizontally extending blade moves along the storage slot, and its movement trajectory does not interfere with the upper mold 2 and the lower mold 3, providing ample installation space. When the upper mold 2 separates from the lower mold 3, after the upper mold 2 moves, it no longer limits the cutting blade 409. Through the elastic force of the spring assembly, the cutting blade 409 pops out of the storage groove. Thus, through its own gravity and the elastic deformation of the spring assembly, the cutting blade 409 cuts off the flash waste. The lower surface of the upper mold 2 has a rectangular array of receiving holes with the same number as the elastic rods 410. The elastic rods 410 are slidably disposed inside the receiving holes. The length of the receiving holes is the same as the length of the elastic rods 410. Based on the setting of the elastic rods 410, when the upper mold 2 and the lower mold 3 are attached, the elastic rods 410 are housed inside the upper mold 2 and will not affect the tight fit between the lower mold 3 and the upper mold 2. When the upper mold 2 and the lower mold 3 are separated, the elastic force of the elastic rods 410 itself makes the elastic rods 410 fit tightly with the flash waste, clamping the flash waste and squeezing the flash of the formed material. When the cutting blade 409 moves with the upper mold 2, the cutting blade 409 can cut the flash waste. By setting the horizontally extended blade, the flash waste is cut off, preventing the flash waste from forming a whole and getting stuck on the lower mold 3, which would affect the collection of flash waste and the continuous injection molding of the lower mold 3. The storage mechanism 4 includes a storage box 401 fixedly sleeved on the outer surface of the lower mold 3, and the storage box 401 is fixedly connected to the equipment frame 1. A guide plate 402 is fixedly connected inside the storage box 401. A flip plate 403 is attached to one side of the guide plate 402, and the lower surface of the flip plate 403 is rotatably connected to the inner bottom wall of the storage box 401 through a pin. Push rods 404 are attached to both sides of the lower surface of the flip plate 403, and the push rods 404 are slidably connected to the inner bottom wall of the storage box 401. A diversion pipe 405 is fixedly connected inside the storage box 401, and the four ends of the diversion pipe 405 are respectively coaxially arranged with the push rods 404. An air supply pipe 406 is fixedly connected to the surface of the diversion pipe 405. The sliding fit between the push rod 404 and the storage box 401 is a gap seal that allows for a small amount of air leakage, and a sealing ring is provided at the connection between the push rod 404 and the inner wall of the cavity. The diversion pipe 405 has four ports, which are fixedly connected to the lower surface of the storage box 401. A cavity is provided at the connection between the push rod 404 and the storage box 401, and the diversion pipe 405 is connected to the cavity. This cavity is used to receive the air injected by the diversion pipe 405 while the push rod 404 moves back and forth, providing power to the push rod 404 and thus driving the push rod 404 to move. The movement of the push rod 404 drives the flip plate 403 to rotate in the storage box 401, so that the flip plate 403 creates a slope, and discharges the burrs and waste falling on the flip plate 403 into the storage box 401. A return spring is fixedly connected inside the cavity and is fixedly connected to the push rod 404 for quick reset of the push rod 404; The storage mechanism 4 also includes a hollow box 407 that is fixedly connected to one end of the gas supply pipe 406, and the two ends of the gas supply pipe 406 are respectively connected to the hollow box 407 and the diversion pipe 405. The hollow box 407 is slidably connected to the inside of the extrusion plate 408, and one side of the extrusion plate 408 is fixedly connected to the drive unit 7. The hollow box 407 is fixedly connected to the equipment frame 1. Among them, the extrusion plate 408 is made of elastic rubber. When the material cylinder 702 drives the extrusion plate 408 to move until it is fully inserted into the hollow box 407, the extrusion plate 408 deforms due to the continuous movement of the material cylinder 702. While moving with the material cylinder 702, it still maintains the state of extrusion on the inside of the hollow box 407. This allows the flipping plate 403 to be in a flipped state when the subsequent guiding mechanism 6 blows and guides the flash waste, thus achieving precise guidance of the flash waste. After the extrusion block 608 extrudes the airbag 603 to its maximum deformation state, the extrusion plate 408 is deformed by the extrusion of the moving plate to fit against the side of the hollow box 407 and no longer contacts the moving plate. This causes the moving plate to no longer limit the extrusion plate 408. Therefore, the extrusion plate 408 separates from the moving plate and the material cylinder 702 and no longer maintains the extrusion on the hollow box 407. As a result, the push rod 404 slides in the storage box 401 due to its own weight. The air in the sliding space of the push rod 404 is extruded into the air supply pipe 406 through the connection between the diversion pipe 405 and the storage box 401. Furthermore, the extrusion plate 408 is subjected to a downward force due to its own weight, allowing the air in the air supply pipe 406 to re-enter the hollow box 407, making it convenient to drive the flip plate 403 to rotate again next time. When the material cylinder 702 moves downward, it first drives the drive plate 609 and the wire rope 605 to move downward, causing the sliding plate 606, the telescopic rod 607 and the extrusion block 608 to reset. This causes the airbag 603 to draw in external air through the jet pipe 601, thus resetting the airbag 603. As the material cylinder 702 continues to move, the moving plate pushes the extrusion plate 408 downward again. When the material cylinder 702 and the upper mold 2 are in contact with the lower mold 3, the moving plate disengages from the extrusion plate 408 again, allowing the moving plate to move below the extrusion plate 408, thus facilitating the reuse of the equipment. Reference Figure 4 , Figure 7 and Figure 8 The guide mechanism 6 includes two sets of jet pipes 601 fixedly installed on both sides of the upper mold 2. The surfaces of the two jet pipes 601 are fixedly connected to a three-way pipe 602. One end of the three-way pipe 602 is fixedly connected to an airbag 603, and the airbag 603 is fixedly connected to the equipment frame 1. The airbag 603 is connected to the outside air, and a one-way valve is provided at the connection point to the outside air, so that the outside air can enter the airbag 603, while the air inside the airbag 603 cannot be discharged through the connection point, but can only be discharged through the three-way tube 602. A one-way valve is provided between the three-way pipe 602 and the jet pipe 601, which only allows gas to be ejected outward through the jet pipe 601, preventing the fly dust from being sucked back into the jet pipe 601 and blocking the air passage. The guide mechanism 6 also includes a support rod 604 fixedly connected to one side of the equipment frame 1. Steel wire ropes 605 are sleeved on both sides of the surface of the support rod 604. One end of the two steel wire ropes 605 is fixedly connected to a sliding plate 606. The sliding plate 606 is slidably disposed inside the equipment frame 1. Two parallel telescopic rods 607 are fixedly connected to the lower surface of the sliding plate 606. One end of the telescopic rod 607 is fixedly connected to a pressing block 608. The guide mechanism 6 also includes a drive plate 609 that is fixedly connected to one end of two steel wire ropes 605, and the drive plate 609 is fixedly connected to the drive unit 7. The three-way pipe 602 slides through the interior of the drive plate 609. The steel wire ropes 605 are slidably arranged with the airbag 603, the sliding plate 606 and the equipment frame 1. The drive plate 609 and the extrusion plate 408 are respectively fixed to both sides of the material cylinder 702. The extrusion plate 408 is located at the bottom of one side of the material cylinder 702, and the drive plate 609 is located in the middle of the other side of the material cylinder 702. During the movement of the material cylinder 702, the moving plate is driven to move first, which in turn drives the extrusion plate 408 to move. This causes the extrusion plate 408 to transport the air in the hollow box 407 to the push rod 404 through the air supply pipe 406, which is used to drive the flip plate 403 to rotate and dump the burrs and waste materials that fall on the flip plate 403 into the storage box 401. The continuous movement of the barrel 702 causes the drive plate 609 to move, which in turn drives the extrusion block 608 to move downwards, extruding the airbag 603. The air inside the airbag is then transported to the jet pipe 601 through the three-way pipe 602. This air blows onto the flipped plate 403 after it has been flipped, blowing the burrs and waste material attached to its surface toward the storage box 401. This prevents the burrs and waste material from melting due to the high temperature of the upper mold 2, thus preventing them from being discharged into the storage box 401. During the movement of the extrusion block 608 and the telescopic rod 607, the extrusion block 608 first contacts the airbag 603, extrudes the airbag 603, causes it to deform, and expels the air inside. When the airbag 603 deforms to its maximum deformation, the telescopic rod 607 is deformed by the gravity applied by the sliding plate 606, so that the sliding plate 606 can still move downward when the extrusion block 608 is not moving, thereby allowing the sliding plate 606 to drive the toothed plate 507 to move downward. The deformation force of the telescopic rod 607 is greater than that of the airbag 603. When the telescopic rod 607 follows the extrusion block 608 to extrude the airbag 603, the telescopic rod 607 will not produce a large deformation. The telescopic rod 607 will only deform when the weight of the sliding plate 606 is fully applied to the telescopic rod 607 due to the complete deformation of the airbag 603. The extrusion plate 408 pushes the push rod 404, the airbag 603 blows air, and the collection plate 501 is controlled by two air sources in a time sequence. During the mold opening stage, the push rod 404 is driven to move first, and the flipping plate 403 flips. During the continuous mold opening process, the airbag 603 is triggered to blow air. After that, the collection plate 501 moves after a delay after the flash cleaning is completed. Each mechanism operates in a time sequence without interference. Reference Figures 1-4 The drive unit 7 includes a linear drive mechanism 701 fixedly connected to the equipment frame 1. The output end of the linear drive mechanism 701 is fixedly connected to a material cylinder 702, and the output end of the material cylinder 702 is fixedly connected to the upper mold 2. The material cylinder 702 communicates with the upper mold 2. The extrusion plate 408 and the drive plate 609 are both fixedly connected to the material cylinder 702. Among them, a movable plate that is in contact with the extrusion plate 408 is fixedly connected to the side of the material cylinder 702 near the extrusion plate 408. The movable plate is in contact with the extrusion plate 408 and is used to drive the extrusion plate 408 to move and compress the extrusion plate 408, so that it deforms. During the material injection molding process, the linear drive mechanism 701 drives the barrel 702 to move in the equipment frame 1, so that the barrel 702 drives the upper mold 2 to move downward, so that the upper mold 2 and the lower mold 3 fit together, and the material is extruded and injection molded. The lower surface of the storage box 401 is provided with a discharge groove. The collection plate 501 pushes all the flash waste in the storage box 401 into the discharge groove to collect the flash waste. The flash waste is heated by an external heating device to make it melt, and the molten flash waste is transported to the material cylinder 702 to complete the recycling and reuse of flash plastic. This achieves the effect of automatic cutting, automatic collection and automatic reuse of flash waste. Reference Figure 6 , Figure 9 and Figure 10 The collection mechanism 5 includes two collection plates 501 that are slidably connected inside the storage box 401. A semi-circular rack 502 is fixedly connected to the outer side of each collection plate 501. The semi-circular rack 502 is slidably disposed inside the storage box 401, and the two semi-circular racks 502 are staggered. A guide groove for sliding of the semi-circular rack 502 is provided inside the storage box 401. The center of the semicircular toothed rack 502 overlaps with the center of the storage box 401; The height of the guide groove is slightly greater than the sum of the widths of the two semicircular racks 502, so that the semicircular racks 502 can move stably in the storage box 401, and the two semicircular racks 502 overlap to provide support for the two semicircular racks 502 respectively, thereby further improving the stability of the semicircular racks 502 sliding inside the guide groove. The surface of the semi-circular rack 502 is provided with a pulley to reduce the friction when the two semi-circular racks 502 move in opposite directions; The collection mechanism 5 also includes two drive gears 503 that are rotatably disposed on the outer arc surface of the storage box 401 and mesh with two semi-circular racks 502 respectively. The surface of the drive gears 503 is fixedly connected to the linkage rods 504, and the linkage rods 504 are rotatably connected to the equipment frame 1. The surfaces of the two linkage rods 504 are fixedly connected to the linkage gears 505, and the surfaces of the linkage gears 505 are meshed with the gear set 506. The gear set 506 includes an external gear that meshes with one of the linkage gears 505, and the external gear meshes with a gear ring together with the linkage gear 505 that is away from the gear set 506. Based on the setting of the gear ring, the two linkage gears 505 rotate in opposite directions, and a straight rod that is rotatably connected to the protective box 508 is fixedly connected to the surface of the external gear. Meanwhile, a bevel gear 1 is fixedly connected to one end of the linkage rod 504 near the external gear, and a bevel gear 2 meshes with the surface of the bevel gear 1. A drive gear is fixedly connected to one end of the bevel gear 2. The collecting mechanism 5 also includes a toothed plate 507 that meshes with the gear set 506, and the toothed plate 507 is fixedly connected to the sliding plate 606. A protective box 508 that is sleeved on the surface of the gear set 506 is fixedly connected to the inner side of the equipment frame 1. The linkage rod 504 and the toothed plate 507 are rotatably connected to the protective box 508. The drive gear meshes with the toothed plate 507. When the sliding plate 606 drives the toothed plate 507 to move, the drive gear drives the bevel gear 2 to rotate, causing the corresponding linkage rod 504 to rotate. Based on the gear ring and linkage gear 505, the two linkage rods 504 are driven to rotate in opposite directions, which causes the drive gear 503 to drive the two semi-circular racks 502 to slide in opposite directions, and drive the two collection plates 501 to slide in opposite directions in the storage box 401, so as to concentrate the flash waste in the storage box 401 to the discharge trough, thus completing the collection and discharge of flash waste.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An injection molding apparatus for plastic molds, comprising: The equipment frame (1), upper mold (2), lower mold (3) parallel to the upper mold (2) and drive unit (7) connected to the upper mold (2) are characterized in that the surface of the lower mold (3) is provided with a storage mechanism (4) fixedly connected to the equipment frame (1) and a collection mechanism (5) provided inside the storage mechanism (4), and the equipment frame (1) is also provided with a guide mechanism (6). The storage mechanism (4) includes a storage box (401) fixedly sleeved on the outer surface of the lower mold (3), and the storage box (401) is fixedly connected to the equipment frame (1). A guide plate (402) is fixedly connected inside the storage box (401). A flip plate (403) is attached to one side of the guide plate (402), and the lower surface of the flip plate (403) is rotatably connected to the inner bottom wall of the storage box (401) through a pin. Push rods (404) are attached to both sides of the lower surface of the flip plate (403), and the push rods (404) are slidably connected to the inner bottom wall of the storage box (401). A diversion pipe (405) is fixedly connected inside the storage box (401), and the four ends of the diversion pipe (405) are coaxially arranged with the push rods (404). An air supply pipe (406) is fixedly connected to the surface of the diversion pipe (405).

2. The injection molding equipment for plastic molds according to claim 1, characterized in that, The storage mechanism (4) also includes a hollow box (407) fixedly connected to one end of the gas supply pipe (406), and the two ends of the gas supply pipe (406) are respectively connected to the hollow box (407) and the diversion pipe (405). The hollow box (407) is slidably connected to the inside of the hollow box (407), and one side of the extrusion plate (408) is fixedly connected to the drive unit (7). The hollow box (407) is fixedly connected to the equipment frame (1).

3. The injection molding equipment for plastic molds according to claim 1, characterized in that, The storage mechanism (4) also includes a cutting blade (409) slidably connected inside the lower mold (3), and a horizontally extended blade is vertically arranged on the outer side of the cutting blade (409). The lower surface of the upper mold (2) is fixedly connected with elastic rods (410) in a rectangular array, and the elastic rods (410) are vertically arranged with the lower mold (3). A gap is provided between every two adjacent elastic rods (410), and the gap is the same as the thickness of the cutting blade (409).

4. The injection molding equipment for plastic molds according to claim 2, characterized in that, The guiding mechanism (6) includes two sets of jet pipes (601) fixedly installed on both sides of the upper mold (2). The surfaces of the two jet pipes (601) are fixedly connected to a three-way pipe (602). One end of the three-way pipe (602) is fixedly connected to an airbag (603), and the airbag (603) is fixedly connected to the equipment frame (1).

5. The injection molding equipment for plastic molds according to claim 4, characterized in that, The guiding mechanism (6) further includes a support rod (604) fixedly connected to one side of the equipment frame (1). Steel wire ropes (605) are sleeved on both sides of the surface of the support rod (604). One end of the two steel wire ropes (605) is fixedly connected to a sliding plate (606). The sliding plate (606) is slidably disposed on the inner side of the equipment frame (1). Two parallel telescopic rods (607) are fixedly connected to the lower surface of the sliding plate (606). One end of the telescopic rod (607) is fixedly connected to a pressing block (608).

6. The injection molding equipment for plastic molds according to claim 5, characterized in that, The guiding mechanism (6) also includes a drive plate (609) that is fixedly connected to one end of the two wire ropes (605), and the drive plate (609) is fixedly connected to the drive unit (7). The three-way pipe (602) slides through the interior of the drive plate (609), and the wire ropes (605) are slidably arranged with the airbag (603), the sliding plate (606) and the equipment frame (1).

7. The injection molding equipment for plastic molds according to claim 5, characterized in that, The drive unit (7) includes a linear drive mechanism (701) fixedly connected to the equipment frame (1). The output end of the linear drive mechanism (701) is fixedly connected to a material cylinder (702), and the output end of the material cylinder (702) is fixedly connected to the upper mold (2). The material cylinder (702) is connected to the upper mold (2). The extrusion plate (408) and the drive plate (609) are both fixedly connected to the material cylinder (702).

8. The injection molding equipment for plastic molds according to claim 1, characterized in that, The collection mechanism (5) includes two collection plates (501) that are slidably connected inside the storage box (401). A semi-circular rack (502) is fixedly connected to the outer side of each collection plate (501). The semi-circular rack (502) is slidably disposed inside the storage box (401), and the two semi-circular racks (502) are staggered. A guide groove for sliding of the semi-circular rack (502) is provided inside the storage box (401).

9. The injection molding equipment for plastic molds according to claim 8, characterized in that, The collection mechanism (5) further includes two drive gears (503) that are rotatably disposed on the outer arc surface of the storage box (401) and mesh with two semi-circular racks (502) respectively. The surface of the drive gears (503) is fixedly connected to a linkage rod (504), and the linkage rod (504) is rotatably connected to the equipment frame (1). The surfaces of the two linkage rods (504) are fixedly connected to a linkage gear (505), and the surface of the linkage gear (505) is meshed with a gear set (506).

10. The injection molding equipment for plastic molds according to claim 9, characterized in that, The collecting mechanism (5) also includes a toothed plate (507) that meshes with the gear set (506), and the toothed plate (507) is fixedly connected to the sliding plate (606). The inner side of the equipment frame (1) is fixedly connected to a protective box (508) that is sleeved on the surface of the gear set (506). The linkage rod (504) and the toothed plate (507) are both rotatably connected to the protective box (508).

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