Injection molding equipment for processing door outer ring

Abstract

The invention discloses injection molding equipment for door outer ring machining, and relates to the technical field of door outer ring injection molding machining. The device comprises a lower mold assembly, an upper mold assembly is arranged on the lower mold assembly, and a gas preparation assembly is installed on one side of the upper mold assembly. A first extension plate is controlled to drive a piston rod and a piston plate to do piston motion in an L-shaped pipe, compressed air is prepared, then the compressed air is injected into a vortex pipe through a guide pipe, the vortex pipe is used for converting the compressed air into cold air and hot air, and the cold air is injected into a first annular concave cavity through a corrugated pipe; and the cooling process in the annular injection molding groove is accelerated, and the outer door ring is rapidly formed, so that the injection molding production efficiency is improved. Meanwhile, hot air is injected into a second annular concave cavity through a second conveying pipe, the temperature in the storage tank is maintained, the heat loss of the storage tank is reduced, the melting performance of the plastic particles is ensured, and then the quality of the door outer ring after injection molding is improved.

Description

Technical Field

[0001] This invention belongs to the field of door outer ring injection molding technology, and in particular relates to an injection molding equipment for door outer ring processing. Background Technology

[0002] Injection molding is essentially a thermoplastic molding process. Its core logic can be summarized as a cycle of "melting-injection-curing": plastic granules are heated to a molten state and injected into the cavity of a customized mold under high pressure. After cooling and curing, the mold opens and ejects a part that matches the shape of the cavity.

[0003] Existing door ring injection molding equipment uses water circulation cooling to accelerate molding, while simultaneously employing heating equipment to melt the plastic granules. However, the melt chamber lacks adequate insulation, leading to rapid heat loss. This not only increases energy consumption but also negatively impacts the quality of the melted plastic granules. Furthermore, with prolonged water circulation, the water temperature gradually rises, further affecting the molding speed and quality of the door ring. Therefore, we provide an injection molding machine for door ring processing to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an injection molding device for processing door rings. By controlling a first extension plate to drive a piston rod and piston plate in an L-shaped tube to generate compressed air, the compressed air is then injected into a vortex tube through a conduit. The vortex tube converts the compressed air into cold and hot air. The cold air is injected into a first annular cavity through a corrugated pipe, accelerating the cooling process inside the annular injection groove and promoting rapid molding of the door ring, thereby improving injection molding efficiency. Simultaneously, hot air is injected into a second annular cavity through a second conveying pipe, maintaining the temperature inside the storage tank, reducing heat loss, ensuring the melting performance of the plastic granules, and thus improving the quality of the molded door ring. This invention solves the problems of existing door ring injection molding equipment that uses water circulation cooling to accelerate molding, while simultaneously requiring heating equipment to melt the plastic granules. However, the lack of adequate insulation outside the melting cavity leads to rapid heat loss, increasing energy consumption and affecting the melting quality of the plastic granules. Furthermore, with prolonged water circulation cooling, the water temperature gradually increases, affecting the molding speed and quality of the door ring.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is an injection molding equipment for processing door outer rings, including a lower mold assembly, an upper mold assembly disposed on the lower mold assembly, a gas preparation assembly installed on one side of the upper mold assembly, and a trimming assembly disposed on the lower mold assembly at a 90° angle to the upper mold assembly; the lower mold assembly is used to receive the injection molding of the door outer ring, and simultaneously adjusts the upper mold assembly and the trimming assembly by a 90° angle; the upper mold assembly is used to inject raw material into the lower mold assembly, thereby completing the injection molding operation of the door outer ring; the gas preparation assembly is used to prepare cold gas and hot gas, the cold gas is used to cool the lower mold assembly and accelerate the molding of the door outer ring, and the hot gas is used to maintain the temperature of the upper mold assembly, thereby ensuring that the raw material is in a high-temperature molten state; the trimming assembly is used to trim the burrs on the outer wall of the door outer ring, and simultaneously clean the trimmed burrs.

[0006] Furthermore, the lower mold assembly includes a base, a lower mold body is fixedly connected to the top of the base, the top of the lower mold body has an annular injection groove, the top of the lower mold body has an annular skirt groove communicating with the annular injection groove, the top of the lower mold body has an annular groove located outside the annular skirt groove, the interior of the lower mold body has a first annular cavity, the outer wall of the lower mold body has symmetrically formed first connecting grooves communicating with the first annular cavity, wherein a first conveying pipe communicating with the first annular cavity is fixedly inserted into the inner wall of one of the first connecting grooves, and a first exhaust pipe is fixedly inserted into the inner wall of the other connecting groove.

[0007] The base is rotatably connected to a first rotating shaft at its top. A V-shaped plate at a 90° angle is fixedly connected to the top of the first rotating shaft. A driven gear is fixedly connected to the outer wall of the first rotating shaft. A first motor is fixedly connected to the top of the base. A power gear meshing with the driven gear is fixedly connected to the output end of the first motor. A first electric push rod and a second electric push rod are fixedly connected to the bottom of the V-shaped plate. The first and second electric push rods are symmetrically arranged. A U-shaped plate is fixedly connected to the output end of the first electric push rod. A mounting plate is fixedly connected to the output end of the second electric push rod. A first fixing rod is symmetrically fixedly connected to the bottom of the mounting plate. A control box is fixedly connected to the top of the base.

[0008] Furthermore, the upper mold assembly includes a storage tank fixedly connected to a U-shaped plate. A second rotating shaft is rotatably connected through the top of the storage tank. A spur gear is fixedly connected to the top of the second rotating shaft. Several mixing rods located inside the storage tank are symmetrically fixedly connected to the outer wall of the second rotating shaft. A second annular cavity is formed inside the storage tank. A second conveying pipe communicating with the second annular cavity is fixedly inserted into the outer wall of the storage tank. A second exhaust pipe communicating with the second annular cavity is fixedly inserted into the outer wall of the storage tank. A first sliding groove is formed at the top of the storage tank. Several second fixing rods are fixedly connected to the bottom of the storage tank. An upper mold body is fixedly connected between the several second fixing rods. A grouting groove is symmetrically formed inside the upper mold body and communicates with each other. A grouting pipe penetrating into the upper mold body and communicating with the grouting groove is fixedly connected to the bottom of the storage tank. An annular sealing plate that inserts into the annular groove is fixedly connected to the bottom of the upper mold body. A feeding pipe is connected to the top of the storage tank.

[0009] Furthermore, the gas preparation assembly includes a mounting base fixedly connected to the outer wall of the storage tank. Support rods are symmetrically fixedly connected to the top of the mounting base, and a gas tank is fixedly connected between the two support rods. A fixing plate is fixedly connected to the top of the mounting base. A vortex tube is fixedly connected through one side of the fixing plate. A conduit is provided between the vortex tube and the gas tank. Solenoid valves are installed on both the conduit and the grouting pipe. A corrugated pipe connected to a first conveying pipe is fixedly connected to one end of the vortex tube, and the other end of the vortex tube is connected to a second conveying pipe. A second sliding groove is provided on the top of the mounting base.

[0010] Furthermore, an L-shaped tube is connected to the top of the gas tank, and a sealing plate is fixedly connected to one end of the L-shaped tube. Several through holes are evenly opened on one side of the sealing plate off-center. An air inlet pipe is connected to the outer wall of the L-shaped tube, and a one-way valve is provided on the outer wall of the air inlet pipe. The gas preparation assembly also includes an L-shaped support plate fixedly connected to one side of the gas tank. A support plate is fixedly connected to the end of the L-shaped support plate. A second motor is fixedly connected to the top of the support plate. A turntable is fixedly connected to the output end of the second motor. A connecting column is fixedly connected to one side of the turntable off-center. The gas preparation assembly also includes a first movable plate slidably connected to the mounting base. A rectangular frame that slidably engages with the connecting column is fixedly connected to the top of the first movable plate.

[0011] Furthermore, a first extension plate is fixedly connected to one outer side of the rectangular frame, a piston rod that slides through the sealing plate is fixedly connected to the end of the first extension plate, a piston plate that slides in contact with the inner wall of the L-shaped tube is fixedly connected to the end of the piston rod, a second extension plate is fixedly connected to one side of the first extension plate, a toothed plate is fixedly connected to the end of the second extension plate, the toothed plate meshes with a spur gear, and a second movable plate that slides in contact with the storage tank is fixedly connected to the bottom of the second extension plate, the second movable plate slides in contact with the first groove.

[0012] Furthermore, the trimming assembly includes a third motor fixedly connected to the bottom of the mounting plate, a rotating rod fixedly connected to the output end of the third motor, a protective cover slidably sleeved on the outer wall of the rotating rod, and the protective cover fixedly connected to two first fixed rods; a sleeve located inside the protective cover is symmetrically hinged to the outer wall of the rotating rod, an insert rod is slidably connected to the inner wall of the sleeve, and an arc-shaped cutting blade is hinged to the end of the insert rod.

[0013] Furthermore, the inner wall of the protective cover is symmetrically provided with arc-shaped grooves, and an arc-shaped plate is slidably connected to the inner wall of the arc-shaped grooves. A rectangular groove is provided at the bottom of the arc-shaped plate, and a slider is slidably connected to the inner wall of the rectangular groove. A square rod is fixedly connected to the bottom of the slider, and the square rod is fixedly connected to the corresponding arc-shaped cutting blade. A return spring is fixedly connected between the slider and the arc-shaped groove, and an electromagnet adapted to the slider is fixedly connected to the bottom of the arc-shaped plate.

[0014] Furthermore, the control box is equipped with a PLC controller, which is electrically connected to the first motor, the second motor, the first electric push rod, the second electric push rod, the solenoid valve, the third motor, and the electromagnet via wires.

[0015] The present invention has the following beneficial effects: 1. By setting up a gas preparation component, the present invention controls the piston rod and piston plate to move within the L-shaped tube via a first extension plate, thereby preparing compressed air. The compressed air is then injected into a vortex tube through a conduit, where it is converted into cold and hot air. The cold air is injected into the first annular cavity through a corrugated pipe, accelerating the cooling process inside the annular injection groove and promoting rapid molding of the outer ring, thus improving injection molding production efficiency. Simultaneously, the hot air is injected into the second annular cavity through a second conveying pipe, maintaining the temperature inside the storage tank, reducing heat loss, ensuring the melting performance of the plastic granules, and thus improving the quality of the injection-molded outer ring.

[0016] 2. This invention controls the trimming assembly to rotate towards the lower mold body until it is directly facing the lower mold body. Then, the second electric push rod drives the mounting plate to move down, which in turn drives the trimming assembly to move down, so that the two arc-shaped cutting blades fit against the outer wall of the door ring. Then, the third motor drives the rotating rod to rotate, which drives the two arc-shaped cutting blades to rotate along the arc-shaped groove through the two sleeves and the insert rod, removing the burrs on the outer ring of the door. Subsequently, the two electromagnets are energized, attracting the corresponding sliders away from the outer ring of the door. The return spring is compressed, and the two square rods drive the two arc-shaped cutting blades to expand outward, opening up the annular burrs and making them taut on the two arc-shaped cutting blades. After that, the two electric push rods drive the trimming assembly to reset, rotating the trimming assembly away from the lower mold assembly, so that it is misaligned with the lower mold assembly. Then, the two electromagnets are de-energized, and under the action of the return spring, the two arc-shaped cutting blades converge, and the burrs slide off the arc-shaped cutting blades. In this way, the burrs on the outer ring of the door are removed, trimmed, cleaned, and transported, effectively improving production efficiency and the consistency of the quality of the outer ring of the door.

[0017] 3. This invention, by manipulating the second extension plate, drives the toothed plate to move back and forth reciprocally, causing the toothed plate to drive the spur gear meshing with it to rotate reciprocally. The rotation of the spur gear further drives the second rotating shaft to rotate, which in turn drives the mixing rod to rotate. The rotation of the mixing rod stirs the plastic granules, making the material more fully heated, thereby accelerating its melting process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an injection molding machine used for processing door outer rings; Figure 2 This is a schematic diagram of the lower mold assembly in this invention; Figure 3 This is a cross-sectional structural diagram of the lower mold body in this invention; Figure 4 This is a cross-sectional view of the upper mold assembly in this invention; Figure 5 This is a schematic diagram of the gas preparation component in this invention; Figure 6 This is a schematic diagram of the structure of the connection between the gas tank, the vortex tube, and the L-shaped tube in this invention; Figure 7 for Figure 5 A partial structural diagram; Figure 8 This is a schematic diagram of the trimming component in this invention; Figure 9 This is a schematic diagram of the structure at the connection between the third motor, the rotating rod, and the arc-shaped cutting blade in this invention; Figure 10 This is a bottom view of the connection between the protective cover and the arc plate in this invention. Figure 11 This is a bottom view of the connection between the arc plate, slider, and electromagnet in this invention.

[0020] The attached diagram lists the components represented by each number as follows: 1. Lower mold assembly; 101. Base; 102. Lower mold body; 103. Annular injection groove; 104. Annular skirt groove; 105. Annular groove; 106. First annular cavity; 107. First connecting groove; 108. First conveying pipe; 109. First exhaust pipe; 110. First rotating shaft; 111. V-shaped plate; 112. Driven gear; 113. First motor; 114. Power gear; 115. First electric push rod; 116. Second electric push rod; 117. 118. U-shaped plate; 119. Mounting plate; 120. First fixing rod; 121. Control box; 2. Upper mold assembly; 201. Storage tank; 202. Second rotating shaft; 203. Spur gear; 204. Mixing rod; 205. Second annular cavity; 206. Second conveying pipe; 207. Second exhaust pipe; 208. First chute; 209. Second fixing rod; 210. Upper mold body; 211. Grouting groove; 212. Grouting pipe; 213. Annular sealing plate; 214. Feeding pipe; 3. Gas preparation assembly; 301. Mounting base; 302. Support rod; 303. Gas tank; 304. Fixing plate; 305. Vortex tube; 306. Conduit; 307. Corrugated pipe; 308. Second chute; 309. L-shaped tube; 310. Sealing plate; 311. Through hole; 312. Inlet pipe; 313. L-shaped support plate; 314. Support plate; 315. Second motor; 316. Turntable; 317. Connecting column; 318. First moving plate; 319. Rectangular frame; 20. First extension plate; 321. Piston rod; 322. Piston plate; 323. Second extension plate; 324. Toothed plate; 325. Second moving plate; 4. Trimming assembly; 401. Third motor; 402. Rotating rod; 403. Protective cover; 404. Sleeve; 405. Insert rod; 406. Arc-shaped cutting blade; 407. Arc-shaped groove; 408. Arc-shaped plate; 409. Rectangular groove; 410. Slider; 411. Square rod; 412. Return spring; 413. Electromagnet. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figure 1-11 The present invention provides the following technical solution: an injection molding device for processing door outer rings, comprising a lower mold assembly 1, an upper mold assembly 2 disposed on the lower mold assembly 1, a gas preparation assembly 3 installed on one side of the upper mold assembly 2, and a trimming assembly 4 disposed on the lower mold assembly 1 at a 90° angle to the upper mold assembly 2; the lower mold assembly 1 is used to receive the injection molding of the door outer ring, and simultaneously adjusts the upper mold assembly 2 and the trimming assembly 4 by a 90° angle; the upper mold assembly 2 is used to inject raw material into the lower mold assembly 1, thereby completing the injection molding operation of the door outer ring; the gas preparation assembly 3 is used to prepare cold gas and hot gas, the cold gas is used to cool the lower mold assembly 1 to accelerate the molding of the door outer ring, and the hot gas is used to maintain the temperature of the upper mold assembly 2, thereby ensuring that the raw material is in a high-temperature molten state; the trimming assembly 4 is used to trim the burrs on the outer wall of the door outer ring, and simultaneously clean the trimmed burrs.

[0023] The lower mold assembly 1 includes a base 101, a lower mold body 102 fixedly connected to the top of the base 101, an annular injection groove 103 on the top of the lower mold body 102, an annular skirt groove 104 communicating with the annular injection groove 103 on the top of the lower mold body 102, an annular groove 105 located outside the annular skirt groove 104 on the top of the lower mold body 102, a first annular cavity 106 inside the lower mold body 102, and first connecting grooves 107 symmetrically formed on the outer wall of the lower mold body 102 communicating with the first annular cavity 106. A first conveying pipe 108 communicating with the first annular cavity 106 is fixedly inserted into the inner wall of one of the first connecting grooves 107, and a first exhaust pipe 109 is fixedly inserted into the inner wall of the other connecting groove. A first rotating shaft is rotatably connected to the top of the base 101. 110, A V-shaped plate 111 set at 90° is fixedly connected to the top of the first rotating shaft 110, A driven gear 112 is fixedly connected to the outer wall of the first rotating shaft 110, A first motor 113 is fixedly connected to the top of the base 101, A power gear 114 meshing with the driven gear 112 is fixedly connected to the output end of the first motor 113; A first electric push rod 115 and a second electric push rod 116 are fixedly connected to the bottom of the V-shaped plate 111, The first electric push rod 115 and the second electric push rod 116 are symmetrically arranged, A U-shaped plate 117 is fixedly connected to the output end of the first electric push rod 115, A mounting plate 118 is fixedly connected to the output end of the second electric push rod 116, A first fixing rod 119 is symmetrically fixedly connected to the bottom of the mounting plate 118, A control box 120 is fixedly connected to the top of the base 101.

[0024] The upper mold assembly 2 includes a storage tank 201 fixedly connected to a U-shaped plate 117 (the storage tank 201 itself has a heating function, which allows the plastic granules to melt quickly, preparing for the injection molding of the outer ring). A second rotating shaft 202 is rotatably connected through the top of the storage tank 201. A spur gear 203 is fixedly connected to the top of the second rotating shaft 202. Several mixing rods 204 located inside the storage tank 201 are symmetrically fixedly connected to the outer wall of the second rotating shaft 202. A second annular cavity 205 is opened inside the storage tank 201. A second conveying pipe 206 communicating with the second annular cavity 205 is fixedly inserted into the outer wall of the storage tank 201. A second exhaust pipe 207 is connected to two annular cavities 205. A first sliding groove 208 is provided on the top of the storage tank 201. Several second fixing rods 209 are fixedly connected to the bottom of the storage tank 201. An upper mold body 210 is fixedly connected between the several second fixing rods 209. A grouting groove 211 is symmetrically provided inside the upper mold body 210 and is connected to each other. A grouting pipe 212 is fixedly connected to the bottom of the storage tank 201, penetrating into the upper mold body 210 and connected to the grouting groove 211. An annular sealing plate 213 is fixedly connected to the bottom of the upper mold body 210 and is inserted into the annular groove 105. A feeding pipe 214 is provided on the top of the storage tank 201.

[0025] The operation process of this embodiment is as follows: Initially, the upper mold assembly 2 is directly opposite the lower mold body 102 on the lower mold assembly 1. The trimming assembly 4 is on the other side of the upper mold assembly 2. By controlling the first electric push rod 115, the U-shaped plate 117 is moved downward, causing the U-shaped plate 117 to move the upper mold assembly 2 downward, so that the upper mold body 210 covers the lower mold body 102, forming a sealed cavity between the lower mold body 102 and the upper mold body 210. At this time, the annular sealing plate 213 is inserted into the annular groove 105, further improving the sealing between the lower mold body 102 and the upper mold body 210. Before injecting molten plastic into the lower mold body 102, the plastic granules are first put into the storage tank 201, and the plastic granules are melted by the storage tank 201. Simultaneously, the spur gear 203 is rotated by controlling the spur gear to move downward. Wheel 203 drives the second rotating shaft 202 to rotate, which in turn drives the mixing rod 204 to rotate, so that the mixing rod 204 stirs the plastic granules, so that they are heated fully and melted faster. Then, the molten plastic is injected into the annular injection mold groove 103 through the injection pipe 212. After it cools down, the outer ring of the door is formed. After the outer ring of the door is injection molded, the first motor 113 drives the power gear 114 to rotate 90°, which in turn drives the driven gear 112 to rotate 90°. This drives the V-shaped plate 111 to rotate 90° through the first rotating shaft 110, so that the upper mold assembly 2 rotates away from the lower mold body 102. At the same time, the trimming assembly 4 rotates towards the lower mold body 102, so that the trimming assembly 4 rotates to be directly opposite the lower mold body 102. The trimming assembly 4 completes the trimming of the rough edges at the edge of the outer ring of the door.

[0026] Example 2, please refer to Figure 1-11This second embodiment is an improvement on the first embodiment as follows: the gas preparation component 3 includes a mounting base 301 fixedly connected to the outer wall of the storage tank 201. Support rods 302 are symmetrically fixedly connected to the top of the mounting base 301, and a gas tank 303 is fixedly connected between the two support rods 302. A fixing plate 304 is fixedly connected to the top of the mounting base 301, and a vortex tube 305 is fixedly connected through one side of the fixing plate 304 (the vortex tube 305 is existing technology; because compressed air rapidly forms a vortex in the vortex tube 305, its internal energy is continuously converted). This allows cold air to be discharged from one end of the vortex tube 305 and hot air to be discharged from the other end. A conduit 306 is provided between the vortex tube 305 and the gas tank 303. Solenoid valves are provided on both the conduit 306 and the grouting pipe 212. One end of the vortex tube 305 is fixedly connected to a corrugated pipe 307 that is connected to the first delivery pipe 108 (the corrugated pipe 307 is flexible to meet the pulling requirements during the deflection process of the upper mold assembly 2 and the gas preparation assembly 3). The other end of the vortex tube 305 is connected to the second delivery pipe 206. The top of the mounting base 301 has an opening. The second chute 308, the top of the gas tank 303 is connected to an L-shaped pipe 309 (the L-shaped pipe 309 is equipped with a solenoid valve, which can control the compressed gas to enter the gas tank 303 and prevent the compressed gas in the gas tank 303 from flowing back into the L-shaped pipe 309), one end of the L-shaped pipe 309 is fixedly connected to a sealing plate 310, and a number of through holes 311 are evenly opened on one side of the sealing plate 310 off-center. The outer wall of the L-shaped pipe 309 is connected to an air inlet pipe 312, and the outer wall of the air inlet pipe 312 is equipped with a one-way valve; the gas preparation component 3 also includes The gas preparation assembly 3 includes an L-shaped support plate 313 fixedly connected to one side of the gas tank 303, a support plate 314 fixedly connected to the end of the L-shaped support plate 313, a second motor 315 fixedly connected to the top of the support plate 314, a turntable 316 fixedly connected to the output end of the second motor 315, and a connecting column 317 fixedly connected to one side of the turntable 316 off-center. The gas preparation assembly 3 also includes a first movable plate 318 slidably connected to the mounting base 301, and a rectangular frame 319 fixedly connected to the top of the first movable plate 318 and slidably engaged with the connecting column 317.

[0027] A first extension plate 320 is fixedly connected to one outer side of a rectangular frame 319. A piston rod 321 that slides through a sealing plate 310 is fixedly connected to the end of the first extension plate 320. A piston plate 322 that slides in contact with the inner wall of an L-shaped tube 309 is fixedly connected to the end of the piston rod 321. A second extension plate 323 is fixedly connected to one side of the first extension plate 320. A toothed plate 324 is fixedly connected to the end of the second extension plate 323. The toothed plate 324 meshes with a spur gear 203. A second movable plate 325 that slides in contact with a storage tank 201 is fixedly connected to the bottom of the second extension plate 323. The second movable plate 325 slides in contact with a first groove 208.

[0028] The operation process in this embodiment is as follows: Figure 5-7As shown, by controlling the second motor 315 to drive the turntable 316 to rotate, the connecting column 317 will rotate in a circular motion, which in turn will drive the rectangular frame 319 to move back and forth. This causes the rectangular frame 319, through the first extension plate 320, to drive the piston rod 321 and piston plate 322 to move in the L-shaped tube 309, thereby compressing external air into the air tank 303, storing compressed air inside, thus completing the preparation of compressed air. Simultaneously, the reciprocating movement of the first extension plate 320 causes the toothed plate 324 to move back and forth through the second extension plate 323, causing the toothed plate 324 to drive the meshing spur gear 203 to rotate reciprocally. The reciprocating wheel 203 drives the mixing rod 204 to rotate, providing power. Then, compressed air from the air tank 303 is injected into the vortex tube 305 through the conduit 306. The vortex tube 305 converts the compressed air into cold air and hot air. The cold air is injected into the first annular cavity 106 through the corrugated pipe 307, which accelerates the cooling inside the annular injection groove 103, allowing the outer ring of the door to form quickly, thereby improving the injection molding production efficiency. At the same time, the hot air is injected into the second annular cavity 205 through the second conveying pipe 206, thereby maintaining the internal temperature of the storage tank 201, thereby reducing the heat loss of the storage tank 201, thus ensuring the melting of the plastic particles, and thus improving the quality of the injection-molded outer ring of the door.

[0029] Example 3, please refer to Figure 1-11 This third embodiment improves upon the first embodiment as follows: the trimming assembly 4 includes a third motor 401 fixedly connected to the bottom of the mounting plate 118. A rotating rod 402 is fixedly connected to the output end of the third motor 401. A protective cover 403 is slidably fitted onto the outer wall of the rotating rod 402. The protective cover 403 is fixedly connected to two first fixed rods 119. A sleeve 404 located inside the protective cover 403 is symmetrically hinged to the outer wall of the rotating rod 402. An insert rod 405 is slidably connected to the inner wall of the sleeve 404. An arc-shaped cutting blade 406 is hinged to the end of the insert rod 405. Arc-shaped grooves 407 are symmetrically formed on the inner wall of the protective cover 403. An arc-shaped plate 408 is slidably connected to the inner wall of the arc-shaped grooves 407. A rectangular groove 409 is formed at the bottom of the arc-shaped plate 408. A slider 410 is slidably connected to the inner wall of the rectangular groove 409. A square rod 411 is fixedly connected to the bottom of the slider 410. The square rod 411 is fixedly connected to the corresponding arc-shaped cutting blade 406. A return spring 412 is fixedly connected between the slider 410 and the arc-shaped groove 407. An electromagnet 413 adapted to the slider 410 is fixedly connected to the bottom of the arc-shaped plate 408 (the slider 410 is made of a metal material that can be attracted by the electromagnet 413 when it is energized). A PLC controller is installed inside the control box 120. The PLC controller is electrically connected to the first motor 113, the second motor 315, the first electric push rod 115, the second electric push rod 116, the solenoid valve, the third motor 401, and the electromagnet 413 through wires.

[0030] The operation process of this embodiment is as follows: After the outer ring injection molding is completed, the trimming assembly 4 is controlled to rotate towards the lower mold body 102, so that the trimming assembly 4 is rotated to be directly opposite the lower mold body 102. Then, the second electric push rod 116 drives the mounting plate 118 to move downward, thereby driving the trimming assembly 4 to move downward, so that the two arc-shaped cutting blades 406 are attached to the outer wall of the outer ring. Then, the third motor 401 is controlled to drive the rotating rod 402 to rotate, thereby driving the two arc-shaped cutting blades 406 to rotate along the arc-shaped groove 407 through the two sleeves 404 and the insert rod 405, thereby completing the removal of the burrs on the outer ring. Then, the two electromagnets 413 are energized, so that the electromagnets 413 attract the corresponding sliders 410 to move away from the outer ring. The process reset spring 412 is compressed, which in turn drives the two arc-shaped cutting blades 406 to expand outward through the two square rods 411, thereby opening up the cut-off annular burrs and tightening them on the two arc-shaped cutting blades 406. Then, the second electric push rod 116 drives the trimming assembly 4 to reset, and then rotates the trimming assembly 4 away from the lower mold assembly 1, making it misaligned with the lower mold assembly 1. Then, the two electromagnets 413 are de-energized, and under the elastic force of the reset spring 412, the two arc-shaped cutting blades 406 are brought together, so that the burrs slide off the arc-shaped cutting blades 406. This achieves the cutting and trimming of the burrs on the outer ring of the door, as well as the cleaning and transfer of the burrs, effectively improving production efficiency and the consistency of the quality of the outer ring of the door.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An injection molding equipment for processing door outer rings, comprising a lower mold assembly (1), an upper mold assembly (2) disposed on the lower mold assembly (1), a gas preparation assembly (3) installed on one side of the upper mold assembly (2), and a trimming assembly (4) disposed on the lower mold assembly (1) at a 90° angle to the upper mold assembly (2). Its features are: The lower mold assembly (1) is used to receive the injection molding of the outer ring of the door, and at the same time, it performs a 90° conversion adjustment between the upper mold assembly (2) and the trimming assembly (4); The upper mold assembly (2) is used to inject the raw material into the lower mold assembly (1) to complete the injection molding operation of the outer ring of the door; The gas preparation component (3) is used to prepare cold gas and hot gas. The cold gas is used to cool down the lower mold component (1) and accelerate the forming of the outer ring of the door. The hot gas is used to maintain the temperature of the upper mold component (2) so as to ensure that the raw materials are in a high-temperature molten state. The trimming component (4) is used to trim the rough edges on the outer wall of the door ring and clean up the trimmed rough edges.

2. The injection molding equipment for processing door outer rings according to claim 1, characterized in that, The lower mold assembly (1) includes a base (101), a lower mold body (102) is fixedly connected to the top of the base (101), an annular injection groove (103) is opened on the top of the lower mold body (102), an annular skirt groove (104) is opened on the top of the lower mold body (102) and communicates with the annular injection groove (103), an annular groove (105) is opened on the top of the lower mold body (102) and is located outside the annular skirt groove (104), a first annular cavity (106) is opened inside the lower mold body (102), and a first connecting groove (107) communicating with the first annular cavity (106) is symmetrically opened on the outer wall of the lower mold body (102), wherein a first conveying pipe (108) communicating with the first annular cavity (106) is fixedly inserted into the inner wall of one of the first connecting grooves (107), and a first exhaust pipe (109) is fixedly inserted into the inner wall of the other connecting groove. The base (101) is rotatably connected to the top of a first rotating shaft (110), the top of the first rotating shaft (110) is fixedly connected to a V-shaped plate (111) set at 90°, the outer wall of the first rotating shaft (110) is fixedly connected to a driven gear (112), the top of the base (101) is fixedly connected to a first motor (113), and the output end of the first motor (113) is fixedly connected to a power gear (114) that meshes with the driven gear (112). The bottom of the V-shaped plate (111) is fixedly connected to a first electric push rod (115) and a second electric push rod (116). The first electric push rod (115) and the second electric push rod (116) are symmetrically arranged. The output end of the first electric push rod (115) is fixedly connected to a U-shaped plate (117). The output end of the second electric push rod (116) is fixedly connected to a mounting plate (118). The bottom of the mounting plate (118) is symmetrically fixedly connected to a first fixing rod (119). The top of the base (101) is fixedly connected to a control box (120).

3. The injection molding equipment for processing door outer rings according to claim 2, characterized in that, The upper mold assembly (2) includes a storage tank (201) fixedly connected to a U-shaped plate (117). A second rotating shaft (202) is rotatably connected through the top of the storage tank (201). A spur gear (203) is fixedly connected to the top of the second rotating shaft (202). Several mixing rods (204) located inside the storage tank (201) are symmetrically fixedly connected to the outer wall of the second rotating shaft (202). The storage tank (201) has a second annular cavity (205) inside. A second conveying pipe (206) connected to the second annular cavity (205) is fixedly inserted into the outer wall of the storage tank (201). A second exhaust pipe (207) connected to the second annular cavity (205) is fixedly inserted into the outer wall of the storage tank (201). A first sliding groove (208) is opened on the top of the storage tank (201). Several second fixing rods (209) are fixedly connected to the bottom of the storage tank (201). A number of second fixing rods (209) are fixedly connected to an upper mold body (210). The upper mold body (210) has symmetrically connected grouting grooves (211) inside. The bottom of the storage tank (201) is fixedly connected to a grouting pipe (212) that penetrates into the upper mold body (210) and communicates with the grouting grooves (211). The bottom of the upper mold body (210) is fixedly connected to an annular sealing plate (213) that is inserted into the annular groove (105). The top of the storage tank (201) is connected to a feeding pipe (214).

4. The injection molding equipment for processing door outer rings according to claim 3, characterized in that, The gas preparation component (3) includes a mounting base (301) fixedly connected to the outer wall of the storage tank (201). Support rods (302) are symmetrically fixedly connected to the top of the mounting base (301). A gas tank (303) is fixedly connected between the two support rods (302). A fixing plate (304) is fixedly connected to the top of the mounting base (301). A vortex tube (305) is fixedly connected through one side of the fixing plate (304). A conduit (306) is provided between the vortex tube (305) and the gas tank (303). Solenoid valves are provided on the conduit (306) and the grouting pipe (212). A corrugated pipe (307) connected to the first conveying pipe (108) is fixedly connected to one end of the vortex tube (305). The other end of the vortex tube (305) is connected to the second conveying pipe (206). A second sliding groove (308) is provided on the top of the mounting base (301).

5. The injection molding equipment for processing door outer rings according to claim 4, characterized in that, An L-shaped tube (309) is connected to the top of the gas tank (303). A sealing plate (310) is fixedly connected to one end of the L-shaped tube (309). Several through holes (311) are evenly opened on one side of the sealing plate (310) off-center. An air inlet pipe (312) is connected to the outer wall of the L-shaped tube (309). A one-way valve is provided on the outer wall of the air inlet pipe (312). The gas preparation assembly (3) further includes an L-shaped support plate (313) fixedly connected to one side of the gas tank (303), a support plate (314) fixedly connected to the end of the L-shaped support plate (313), a second motor (315) fixedly connected to the top of the support plate (314), a turntable (316) fixedly connected to the output end of the second motor (315), and a connecting column (317) fixedly connected to one side of the turntable (316) off-center. The gas preparation assembly (3) further includes a first movable plate (318) slidably connected to the mounting base (301), and a rectangular frame (319) fixedly connected to the top of the first movable plate (318) and slidably engaged with the connecting column (317).

6. The injection molding equipment for processing door outer rings according to claim 5, characterized in that, A first extension plate (320) is fixedly connected to one outer side of the rectangular frame (319). A piston rod (321) that slides through the sealing plate (310) is fixedly connected to the end of the first extension plate (320). A piston plate (322) that slides in contact with the inner wall of the L-shaped tube (309) is fixedly connected to the end of the piston rod (321). A second extension plate (323) is fixedly connected to one side of the first extension plate (320). A toothed plate (324) is fixedly connected to the end of the second extension plate (323). The toothed plate (324) meshes with a spur gear (203). A second movable plate (325) that slides in contact with the storage tank (201) is fixedly connected to the bottom of the second extension plate (323). The second movable plate (325) slides in contact with the first groove (208).

7. The injection molding equipment for processing door outer rings according to claim 6, characterized in that, The trimming assembly (4) includes a third motor (401) fixedly connected to the bottom of the mounting plate (118). The output end of the third motor (401) is fixedly connected to a rotating rod (402). A protective cover (403) is slidably sleeved on the outer wall of the rotating rod (402). The protective cover (403) is fixedly connected to two first fixing rods (119). The outer wall of the rotating rod (402) is symmetrically hinged with a sleeve (404) located inside the protective cover (403). The inner wall of the sleeve (404) is slidably connected with an insert rod (405). The end of the insert rod (405) is hinged with an arc-shaped cutting blade (406).

8. The injection molding equipment for processing door outer rings according to claim 7, characterized in that, The inner wall of the protective cover (403) is symmetrically provided with arc-shaped grooves (407). An arc-shaped plate (408) is slidably connected to the inner wall of the arc-shaped groove (407). A rectangular groove (409) is provided at the bottom of the arc-shaped plate (408). A slider (410) is slidably connected to the inner wall of the rectangular groove (409). A square rod (411) is fixedly connected to the bottom of the slider (410). The square rod (411) is fixedly connected to the corresponding arc-shaped cutting blade (406). A return spring (412) is fixedly connected between the slider (410) and the arc-shaped groove (407). An electromagnet (413) adapted to the slider (410) is fixedly connected to the bottom of the arc-shaped plate (408).

9. An injection molding equipment for processing door outer rings according to claim 8, characterized in that, The control box (120) is equipped with a PLC controller. The PLC controller is electrically connected to the first motor (113), the second motor (315), the first electric push rod (115), the second electric push rod (116), the solenoid valve, the third motor (401), and the electromagnet (413) via wires.

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