Injection molding machine for medical plastic production

Abstract

The invention relates to the field of injection molding equipment, in particular to an injection molding machine for medical plastic production, and solves the problems that bubbles are generated in a mold, the phenomenon that the mold cannot be used after being molded is prevented, and automatic demolding can be achieved after injection molding, the injection molding machine comprises a mold box, a cover plate and a fixing plate, and the cover plate is installed on the upper portion of the mold box; and the mold box is slidably connected to the inner wall of the fixing plate, and a protection plate is slidably connected to the interior of the cover plate. The mold box can slide, meanwhile, the mold box is driven by a driving rod to vibrate in a vertical displacement mode, so that the vibration function of an injection molding part in the mold box is achieved, bubbles can be discharged at the moment, meanwhile, a stabilizing plate is located on the lower portion of the mold box, excessive air can be prevented from entering the mold box to the maximum extent, and meanwhile during injection molding, the mold box is not prone to falling off. Bubbles can be automatically discharged, the phenomenon that injection molding liquid flows out of the exhaust holes when injection is conducted into the mold box can be avoided, and normal injection molding of the mold is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding equipment, in particular to an injection molding machine for producing medical plastics. Background Art

[0002] With the continuous development of modern medicine, medical plastics play a vital role in the manufacturing of medical devices. Medical plastics, with their excellent biocompatibility, chemical stability, corrosion resistance, and processability, are widely used in the production of various medical devices. These medical devices come into direct contact with the human body, and their quality and performance are directly related to the health and safety of patients. Therefore, the production process and quality requirements of medical plastics are extremely high.

[0003] At present, the production of medical plastics mainly adopts the injection molding process. Injection molding is a molding method in which the plastic raw material is heated and melted, then injected into the mold cavity under high pressure. After cooling and solidification, the desired shape of the product is obtained. This method has the advantages of high production efficiency, high product dimensional accuracy, and good surface quality. It can meet the large-scale production and high-quality requirements of medical plastic products.

[0004] During injection molding, the plastic melt quickly fills the mold cavity. If the mold is not vented smoothly, the gas in the melt and the original air in the mold will be wrapped in the melt, forming bubbles. These bubbles will affect the density and mechanical properties of the product and reduce the quality of medical plastic products. The presence of bubbles in the mold will cause defects inside the medical plastic products, such as voids and looseness. These defects will significantly reduce the strength, sealing and other properties of the products, and cannot meet the use requirements of medical devices. For example, in medical plastic products such as infusion tubes that need to withstand a certain pressure, the presence of bubbles may cause leakage during use, affecting the normal progress of medical operations and even causing harm to patients. In addition, bubbles may also affect the sterilization effect of the product because the air in the bubbles will hinder the full contact between the sterilizer and the interior of the product, thereby failing to achieve the expected sterilization purpose.

[0005] After injection molding, medical plastic products become tightly attached to the mold due to cooling and shrinkage, making demolding difficult. Traditional demolding methods usually involve forcibly removing the product from the mold through manual or mechanical means. This not only easily damages the surface quality and dimensional accuracy of the product, but also increases production costs and labor intensity. If demolding is not done properly, it may also cause deformation, breakage, and other damage to the product, rendering it scrapped and reducing production efficiency and economic benefits.

[0006] Therefore, the present invention provides an injection molding machine for producing medical plastics to solve the above problems. Summary of the Invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an injection molding machine for producing medical plastics, which can solve the above-mentioned problem of avoiding the generation of bubbles in the mold and preventing the phenomenon of being unusable after molding, and can automatically demold after injection molding.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] An injection molding machine for producing medical plastics, comprising a mold box, a cover plate and a fixed plate, wherein the cover plate is mounted on the upper part of the mold box, the mold box is slidably connected to the inner wall of the fixed plate, the inner part of the cover plate is slidably connected to a protective plate, the inner part of the protective plate is slidably connected to a stabilizing plate, the stabilizing plate matches an air outlet pipe, the air outlet pipe is mounted on the inside of the cover plate, a cooling bag is mounted on the inside of the cover plate, and the cooling bag matches the inner wall of the mold box; the inner part of the lower part of the fixed plate is rotatably connected to a driving rod, the driving rod matches the mold box, the driving rod is drivably connected to a demoulding shaft, and the demoulding shaft is driven by the internal connection of the mold box. Then, a feeding box is installed on the outer wall of the fixed plate, and the feeding box is connected to the mold box through a hose, and a demoulding cylinder is installed on the upper part of the feeding box; the device can realize the sliding of the mold box through the sliding setting of the mold box and the cover plate, and at the same time drive the mold box to vibrate up and down through the driving rod, so as to realize the oscillation function of the injection molded parts inside it, and the bubbles can be discharged at this time. At the same time, the stabilizing plate of the device is located at the lower part of the mold box, which can avoid the entry of excess air to the greatest extent, and at the same time, it can automatically discharge bubbles during injection, and can avoid the phenomenon of injection liquid flowing out of the exhaust hole when injecting into the interior of the mold box, thereby ensuring the normal injection molding of the mold.

[0010] Preferably, a sliding block is fixedly installed on the cover plate and the side wall of the mold box, and the sliding block is slidably connected to the inside of a sliding groove, and the sliding groove is located on the inner side wall of the fixed plate.

[0011] Preferably, a cooling pipe is installed on the inner wall of the mold box, and the cooling pipe matches the cooling bag. A stripping plate is slidably connected to the inner bottom wall of the mold box, and a threaded block is fixedly installed on the bottom of the stripping plate; a compression spring is fixedly installed on the top of the protective plate, and the other end of the compression spring is fixedly connected to the inner top wall of the cover plate, and a partition is installed inside the cover plate, and a top spring is fixedly installed on the bottom of the partition, and the other end of the top spring is fixedly connected to the top wall of the stabilizing plate, and a driving tooth plate is fixedly installed on the top of the stabilizing plate, and the driving tooth plate is driven and connected to the cooling bag; in the initial state of this device, the protective plate extends out of the interior of the cover plate under the action of the compression spring, and when the cover plate is locked with the mold box, the protective plate is located inside the mold box, and the stabilizing plate is located at the lower part of the interior of the mold box. At this time, the space inside the mold box is smaller and there is less air.

[0012] Preferably, an exhaust groove is provided on the inner wall of the stabilizing plate, and a fixing plate is fixedly installed on the inner bottom wall of the exhaust groove, and the internal sealing sliding connection of the fixing plate is provided with a sliding inclined plate, and the number of the sliding inclined plates is two, and the two sliding inclined plates are arranged opposite to each other, and the opposite ends are set as inclined surfaces, and a sealing spring is fixedly installed on the opposite ends of the sliding inclined plates, and the other end of the sealing spring is fixedly connected to the inner side wall of the fixing plate; the bottom of the air outlet pipe matches the sliding inclined plate, and an exhaust net is installed at the bottom of the air outlet pipe, and the exhaust net is communicated with the inner wall of the air outlet pipe; when the device is in use, the injection molding liquid is first injected through the feeding box. At this time, the injection molding liquid inside the feeding box enters the interior of the mold box. After continuous injection, the stabilizing plate will slowly move upward. In the initial state, the exhaust groove is in a sealed state, which can prevent the injection molding liquid from entering the upper part of the stabilizing plate through the exhaust groove. When the cam is in the airtight position, the bottom of the air outlet pipe is pressed against the sliding inclined plate, so that the two sliding inclined plates are displaced in opposite directions, so that the two are connected to each other for exhaust. The bottom of the air outlet pipe of this device matches the sliding inclined plate. After the two sliding inclined plates are displaced, the bottom of the air outlet pipe is flush with the bottom of the exhaust groove, avoiding the phenomenon of excessive extension. In the initial state of this device, the stable plate can be slowly lifted up with the entry of the injection molding liquid, which can avoid the generation of bubbles in the middle and the phenomenon of increasing bubbles due to excessive flow of the injection molding liquid. The exhaust groove is initially closed to avoid waste of injection molding liquid. Exhaust is carried out after communicating with the air outlet pipe, and the exhaust net can avoid the injection molding liquid from entering the interior of the air outlet pipe to the greatest extent.

[0013] Preferably, one end of the driving rod is fixedly connected to the output end of the driving motor, and the driving motor is fixedly mounted on the outer wall of the fixed plate; an eccentric wheel is fixedly mounted on the outer wall of one end of the driving rod, and the eccentric wheel matches the bottom of the mold box; after the injection molding is completed, the driving motor is started at this time, so that the driving motor drives the driving rod to rotate continuously, and at the same time the eccentric wheel will push against the lower part of the mold box, so that the mold box and the cover plate slide inside the slide groove, realizing the vibration effect on the inside of the mold box, and the injection liquid inside it will oscillate, and the bubbles inside the injection liquid will move to be discharged, realizing reciprocating vibration exhaust.

[0014] The top end of the sliding sleeve is connected to the inner wall of the fixing plate, and the other end is fixed with the fixing plate, and the fixing plate is fixed with the fixing plate to the fixing plate.

[0015] Preferably, an inner cavity is provided inside the bidirectional screw, an inclined block is slidably connected to the inner surface of the inner cavity, one end of the inclined block is in the shape of a triangle, an extrusion spring is fixedly installed on one end of the inclined block located inside the inner cavity, the other end of the extrusion spring is fixedly connected to the inner wall of the inner cavity, an inclined groove is provided on the inner wall of one end of the demoulding shaft, and the inclined groove matches the inclined block; a demoulding module is fixedly installed on the output end of the demoulding cylinder, the top of the fixed plate is rotatably connected to the retracting hinge shaft, one end of a stretching cable is wound around the outer wall of the retracting hinge shaft, and the other end of the stretching cable is connected to the cover plate When the mold is to be demoulded, the hinge shaft is rotated to drive the cover plate to move upward through the tension cable. At this time, the protective plate is located on the side wall of the mold, and the stabilizing plate is located on the upper part of the mold to play a protective role. When the driving rod of the device is rotated, the demoulding shaft is driven to rotate through the slide cylinder. At this time, the inclined surface of the inclined block is opposite to the inclined surface of the inclined groove. At this time, the rotation of the demoulding shaft will not drive the two-way screw to rotate. At this time, the scroll spring is in a compressed state, and the continuous rotation of the driving rod can limit the reverse rotation of the demoulding shaft to prevent the demoulding shaft from rotating. When the mold needs to be demoulded, the sliding slide cylinder is used to disengage the sliding bevel gear from the engagement with the rotating bevel gear. At this time, the inclined block inside the two-way screw is acted upon by the extrusion spring so that the straight surface of the inclined block is opposite to the straight surface of the inclined groove, so that the demoulding shaft drives the two-way screw to rotate. At this time, the two-way screw rotates, driving the threaded block to move, and the demoulding plate to move upward. The stabilizing plate and the protective plate play a protective role. The stabilizing plate follows the upward displacement. When the mold slides out of the mold box, it is ejected by the demoulding module to realize the demoulding function. When the driving rod oscillates to remove bubbles, this device can It drives the demoulding shaft to rotate and store energy to realize the linkage function. After the casting is completed, the automatic demoulding function can be realized by sliding the slide. At the same time, the stabilizing plate and protective plate of this device can protect the outer wall of the mold. The stabilizing plate, protective plate and demoulding plate form a protective space, which can avoid the deformation of the mold caused by uneven force or external influence during demoulding, and ensure the integrity of the mold. This device can automatically demould without manual contact and no additional power support. The demoulding and vibration de-bubble of this device form a linkage effect.

[0016] Preferably, a main pipe is installed on the outer wall of the cooling bag, a valve is installed inside the main pipe, a driving gear is installed on the rotating shaft of the valve, the driving gear is meshed and connected with the driving gear plate, a branch pipe is installed at the water outlet end of the main pipe, the branch pipe is connected to the water outlet pipe, and the water outlet pipe is installed at the bottom of the side wall of the cover plate.

[0017] Preferably, a fixed plate is fixedly installed inside the water outlet pipe, and a sealing hole is opened on the outer wall of the fixed plate, and a sliding plate is slidably connected to the upper part of the fixed plate and the inner part of the water outlet pipe, and a sealing column is fixedly installed on the bottom of the sliding plate, and the sealing column matches the sealing hole, and a water inlet hole is opened on the inner wall of the sliding plate, and a top column is fixedly installed on the bottom of the sliding plate, and the lower part of the top column slides on the inner wall of the fixed plate, and a return spring is fixedly installed on the outer wall of the bottom of the top column, and the other end of the return spring is fixedly connected to the bottom of the fixed plate; a top plate is fixedly installed inside the cooling pipe, and the top plate matches the bottom of the top column; when the cover plate of this device is locked with the mold box, the water outlet pipe will be plugged into the interior of the cooling pipe, so that the top column and the top plate are pressed against each other, and the top column is forced upward When the cam is pressed against the top, the sliding plate is displaced upward, and in the initial state, the pressing column seals the sealing hole. After the sliding plate is displaced upward, the inside of the water outlet pipe and the inside of the cooling pipe are in a conductive state. When the injection molding liquid is injected, the rise of the stabilizing plate can drive the driving gear plate to move upward, thereby causing the driving gear to open the valve of the main pipe, and the coolant flows to the walls of the mold box and the cover plate through the branch pipe, thereby realizing the cooling function. The device can form a linkage function between the cooling and injection of the injection molding liquid through the arrangement of the driving gear plate and the driving gear. When the injection molding liquid is injected, cooling can be carried out synchronously and shaping can be carried out quickly. At the same time, under the action of the water outlet pipe and the cooling pipe, the discharge of the coolant when the mold box and the cover plate are not condensed can be avoided, and the waste of the coolant caused by the outflow when the cover plate rises for demoulding can be avoided.

[0018] The beneficial effects of the present invention are:

[0019] 1. This device can realize the sliding of the mold box through the sliding setting of the mold box and the cover plate. At the same time, the mold box is driven by the driving rod to vibrate up and down, thereby realizing the vibration function of the injection molded parts inside. At this time, the bubbles can be discharged. At the same time, the stabilizing plate of this device is located at the bottom of the mold box, which can avoid the entry of excess air to the greatest extent. At the same time, during injection molding, it can automatically discharge bubbles and avoid the phenomenon of injection liquid flowing out of the exhaust hole when injecting into the mold box, thereby ensuring normal injection molding of the mold.

[0020] 2. In the initial state of the device, the stabilizing plate can be slowly lifted as the injection liquid enters, which can avoid the generation of bubbles in the middle and the increase of bubbles caused by excessive flow of the injection liquid. The exhaust groove is initially closed to avoid waste of injection liquid. After being connected to the outlet pipe, exhaust is carried out, and the exhaust net can prevent the injection liquid from entering the inside of the outlet pipe to the greatest extent.

[0021] 3. After the injection molding is completed, the drive motor of this device is started, so that the drive motor drives the drive rod to rotate continuously. At the same time, the eccentric wheel will press against the bottom of the mold box, so that the mold box and the cover plate slide inside the slide, realizing the vibration effect on the inside of the mold box, and the injection molding liquid inside it will vibrate, and the bubbles inside the injection molding liquid will move and be discharged, realizing reciprocating vibration exhaust.

[0022] 4. When the driving rod of this device oscillates to remove bubbles, it can drive the demoulding shaft to rotate and store energy, realizing the linkage function. After the casting is completed, the automatic demoulding function can be realized by sliding the slide. At the same time, the stabilizing plate and protective plate of this device can protect the outer wall of the mold. The stabilizing plate, protective plate and demoulding plate form a protective space, which can avoid the deformation of the mold caused by uneven force or external influence during demoulding, thereby ensuring the integrity of the mold. This device can automatically demould without manual contact and no additional power support. The demoulding and oscillation of this device to remove bubbles form a linkage effect.

[0023] 5. This device can link the cooling of the device with the injection of the injection molding liquid by setting the driving tooth plate and the driving gear. When the injection molding liquid is injected, the cooling can be carried out synchronously and the molding can be quickly performed. At the same time, under the action of the water outlet pipe and the cooling pipe, the discharge of the coolant when the mold box and the cover plate are not condensed can be avoided, and the waste of the coolant caused by the outflow when the cover plate rises for demoulding can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a front-view stereoscopic view of the present invention;

[0025] Figure 2 A schematic diagram of the interior of the present invention;

[0026] Figure 3 It is a three-dimensional schematic diagram of the mold box of the present invention;

[0027] Figure 4 is a schematic diagram of the bottom of the cover plate of the present invention;

[0028] Figure 5 is a schematic diagram of the exhaust groove of the present invention;

[0029] Figure 6 is a schematic diagram of a cross-section of the air outlet pipe of the present invention;

[0030] Figure 7 Schematic diagram of the driving rod and the demoulding shaft of the present invention;

[0031] Figure 8 Schematic diagram of the cross-section of the bidirectional lead screw and the demoulding shaft end face of the present invention;

[0032] Figure 9 A schematic diagram of a three-dimensional main body of the present invention;

[0033] Figure 10 It is a schematic diagram of the cross section of the water outlet pipe and the cooling pipe of the present invention.

[0034] In the figure: 1, mold box; 101, cooling pipe; 102, stripper plate; 103, thread block; 104, top plate;

[0035] 2. Cover plate; 201. Protective plate; 202. Partition plate; 203. Compression spring; 204. Retaining spring; 205. Driving gear plate; 206. Slider;

[0036] 3. Fixed plate; 301. Slide groove;

[0037] 4. Driving rod; 401. Driving motor; 402. Eccentric wheel; 403. Rotating bevel gear;

[0038] 5. Demolding shaft; 501. Slide; 502. Limiting bar; 503. Sliding bevel gear; 504. Scroll spring; 505. Bidirectional screw; 506. Inner cavity; 507. Oblique block; 508. Extrusion spring; 509. Oblique groove;

[0039] 6. Stabilizing plate; 601. Exhaust groove; 602. Fixed plate; 603. Sliding inclined plate; 604. Sealing spring;

[0040] 7. Exhaust pipe; 701. Exhaust net;

[0041] 8. Cooling bladder; 801. Main pipe; 802. Branch pipe; 803. Water outlet pipe; 804. Fixed plate; 805. Sealing hole; 806. Sliding plate; 807. Abutment column; 808. Sealing column; 809. Water inlet hole; 810. Return spring; 811. Drive gear;

[0042] 9. Demolding cylinder; 901. Demolding module;

[0043] 10. Feeding box; 11. Retracting hinge shaft; 12. Tensile cable. DETAILED DESCRIPTION

[0044] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] An injection molding machine for producing medical plastics, as shown in the attached Figure 1-2As shown, it includes a mold box 1, a cover plate 2 and a fixed plate 3, the cover plate 2 is installed on the upper part of the mold box 1, the mold box 1 is slidably connected to the inner wall of the fixed plate 3, the inner part of the cover plate 2 is slidably connected to the protective plate 201, the inner part of the protective plate 201 is slidably connected to the stabilizing plate 6, the stabilizing plate 6 matches the air outlet pipe 7, the air outlet pipe 7 is installed inside the cover plate 2, the inner part of the cover plate 2 is installed with a cooling bag 8, the cooling bag 8 matches the inner wall of the mold box 1; the inner part of the lower part of the fixed plate 3 is rotatably connected to the driving rod 4, the driving rod 4 matches the mold box 1, the driving rod 4 is driven and connected to the demoulding shaft 5, the demoulding shaft 5 is connected to the inner driving of the mold box 1, and the outer wall of the fixed plate 3 is installed. The feeding box 10 is connected to the mold box 1 through a hose, and a demoulding cylinder 9 is installed on the upper part of the feeding box 10; the device can realize the sliding of the mold box 1 through the sliding setting of the mold box 1 and the cover plate 2, and at the same time drive the mold box 1 to vibrate up and down through the driving rod 4, so as to realize the oscillation function of the injection molded parts inside it, and the bubbles can be discharged at this time. At the same time, the stabilizing plate 6 of the device is located at the lower part of the mold box 1, which can avoid the entry of excess air to the greatest extent. At the same time, during injection molding, it can automatically discharge bubbles and avoid the phenomenon of injection liquid flowing out of the exhaust hole when injecting into the mold box 1, thereby ensuring the normal injection molding of the mold.

[0046] As attached Figure 1 As shown, a slider 206 is fixedly installed on the side wall of the cover plate 2 and the mold box 1 , and the slider 206 is slidably connected to the inside of the slide groove 301 , and the slide groove 301 is located on the inner side wall of the fixed plate 3 .

[0047] As attached Figure 2-3 As shown, a cooling pipe 101 is installed on the inner wall of the mold box 1, and the cooling pipe 101 matches the cooling bag 8. A stripping plate 102 is slidably connected to the inner bottom wall of the mold box 1, and a threaded block 103 is fixedly installed on the bottom of the stripping plate 102; a compression spring 203 is fixedly installed on the top of the protective plate 201, and the other end of the compression spring 203 is fixedly connected to the inner top wall of the cover plate 2, a partition 202 is installed inside the cover plate 2, and a top spring 204 is fixedly installed on the bottom of the partition 202, and the other end of the top spring 204 is fixedly connected to the top wall of the stabilizing plate 6, and a driving tooth plate 205 is fixedly installed on the top of the stabilizing plate 6, and the driving tooth plate 205 is drivingly connected to the cooling bag 8; in the initial state of this device, the protective plate 201 extends out of the interior of the cover plate 2 under the action of the compression spring 203, and when the cover plate 2 is locked with the mold box 1, the protective plate 201 is located inside the mold box 1, and the stabilizing plate 6 is located at the lower part of the interior of the mold box 1. At this time, the space inside the mold box 1 is small and there is less air.

[0048] As attached Figure 4-6As shown, an exhaust groove 601 is provided on the inner wall of the stabilizing plate 6, and a fixed plate 602 is fixedly installed on the inner bottom wall of the exhaust groove 601. The internal sealing sliding connection of the fixed plate 602 is connected with a sliding inclined plate 603. There are two sliding inclined plates 603. The two sliding inclined plates 603 are arranged opposite to each other, and the opposite ends are set as inclined surfaces. A sealing spring 604 is fixedly installed on the opposite end of the sliding inclined plates 603, and the other end of the sealing spring 604 is fixedly connected to the inner wall of the fixed plate 602; the bottom of the exhaust pipe 7 Matching with the sliding inclined plate 603, an exhaust net 701 is installed at the bottom of the outlet pipe 7, and the exhaust net 701 is communicated with the inner wall of the outlet pipe 7; when the device is in use, the injection molding liquid is first injected through the feed box 10. At this time, the injection molding liquid inside the feed box 10 enters the interior of the mold box 1. After continuous injection, the stable plate 6 will slowly move upward. In the initial state, the exhaust groove 601 is in a sealed state, which can prevent the injection molding liquid from entering the upper part of the stable plate 6 through the exhaust groove 601. For example, when the stabilizing plate 6 moves upward, the push-up spring 204 is in a compressed state. When it reaches the uppermost part, the interior of the mold box 1 is filled with the injection liquid. At the same time, the exhaust groove 601 will push against the exhaust pipe 7. At this time, the bottom of the exhaust pipe 7 pushes against the sliding inclined plate 603, so that the two sliding inclined plates 603 move in opposite directions, so that the two are connected to each other for easy exhaust. The bottom of the exhaust pipe 7 of this device matches the sliding inclined plate 603. After the two sliding inclined plates 603 are displaced, The bottom of the air outlet pipe 7 is flush with the bottom of the exhaust groove 601 to avoid excessive extension. In the initial state of the device, the stabilizing plate 6 can be slowly lifted as the injection liquid enters, which can avoid the generation of bubbles in the middle and the increase of bubbles caused by excessive flow of the injection liquid. The exhaust groove 601 is initially closed to avoid waste of the injection liquid. After being connected to the air outlet pipe 7, the air is exhausted, and the exhaust net 701 can prevent the injection liquid from entering the interior of the air outlet pipe 7 to the greatest extent.

[0049] As attached Figure 1 and attached Figure 7 As shown, one end of the driving rod 4 is fixedly connected to the output end of the driving motor 401, and the driving motor 401 is fixedly mounted on the outer wall of the fixed plate 3; an eccentric wheel 402 is fixedly mounted on the outer wall of one end of the driving rod 4, and the eccentric wheel 402 matches the bottom of the mold box 1; after the injection molding is completed, the driving motor 401 is started at this time, so that the driving motor 401 drives the driving rod 4 to rotate continuously, and at the same time the eccentric wheel 402 will push against the lower part of the mold box 1, so that the mold box 1 and the cover plate 2 slide inside the slide groove 301, realizing a vibration effect on the inside of the mold box 1, and the injection liquid inside it will oscillate, and the bubbles inside the injection liquid will move to be discharged, thereby realizing reciprocating vibration exhaust.

[0050] As attached Figure 7As shown, a rotating bevel gear 403 is fixedly installed on the outer wall of the driving rod 4; a slide 501 is slidably connected to the outer wall of the demoulding shaft 5 through a limit bar 502, and a sliding bevel gear 503 is installed on the outer wall of the slide 501, and the sliding bevel gear 503 is meshed with the rotating bevel gear 403; a vortex spring 504 is installed on the outer wall of the bottom of the demoulding shaft 5, and the other end of the vortex spring 504 is fixedly installed on the inner bottom wall of the fixed plate 3, and the top of the slide 501 is unidirectionally driven and connected to a bidirectional screw 505, and the threaded block 103 is threadedly connected to the outer wall of the bidirectional screw 505; this device is When the driving motor 401 drives the driving rod 4 to rotate, the driving rod 4 drives the slide 501 to rotate under the action of the rotating bevel gear 403 and the sliding bevel gear 503, and the slide 501 of this device is located at the upper part in the initial state, so that the sliding bevel gear 503 is engaged with the rotating bevel gear 403. At this time, under the action of the limit bar 502, the demolding shaft 5 is driven to rotate in the forward direction, and the bidirectional screw 505 is connected to the demolding shaft 5 in a unidirectional drive manner. At this time, the forward rotation of the demolding shaft 5 will not drive the bidirectional screw 505 to rotate, and the volute spring 504 is compressed to store energy.

[0051] As attached Figure 1 and attached Figure 8As shown, an inner cavity 506 is provided inside the bidirectional lead screw 505, and an inclined block 507 is slidably connected to the inner cavity 506. One end of the inclined block 507 is in the shape of a triangle, and an extrusion spring 508 is fixedly installed on one end of the inclined block 507 located inside the inner cavity 506. The other end of the extrusion spring 508 is fixedly connected to the inner wall of the inner cavity 506. An inclined groove 509 is provided on the inner wall of one end of the demoulding shaft 5, and the inclined groove 509 matches the inclined block 507; a demoulding module 901 is fixedly installed on the output end of the demoulding cylinder 9, and the top of the fixed plate 3 is rotatably connected to the hinge shaft 11, and one end of the stretching cable 12 is wound on the outer wall of the hinge shaft 11, and the other end of the stretching cable 12 is fixed to the top of the cover plate 2. When the device needs to demould, the hinge shaft 11 is rotated so that the hinge shaft 11 drives the cover plate 2 to move upward through the tension cable 12. At this time, the protective plate 201 is located on the side wall of the mold, and the stabilizing plate 6 is located on the upper part of the mold to play a protective role. When the driving rod 4 of the device is rotated, the demoulding shaft 5 is driven to rotate through the slide cylinder 501. At this time, the inclined surface of the inclined block 507 is opposite to the inclined surface of the inclined groove 509. At this time, the rotation of the demoulding shaft 5 will not drive the two-way screw 505 to rotate. At this time, the volute spring 504 is in a compressed state, and the continuous rotation of the driving rod 4 can play a role in resisting and limiting the reverse rotation of the demoulding shaft 5, thereby preventing the demoulding shaft 5 from rotating. When demoulding is required, the sliding slide 501 is used to disengage the sliding bevel gear 503 from the engagement with the rotating bevel gear 403. At this time, the inclined block 507 inside the two-way screw 505 is acted upon by the extrusion spring 508, so that the straight surface of the inclined block 507 is opposite to the straight surface of the inclined groove 509, so that the demoulding shaft 5 drives the two-way screw 505 to rotate. At this time, the two-way screw 505 rotates, driving the threaded block 103 to move, and the demoulding plate 102 moves upward. The stabilizing plate 6 and the protective plate 201 play a protective role. The stabilizing plate 6 follows and moves upward. When the mold slides out of the interior of the mold box 1, it is ejected by the demoulding module 901 to realize the demoulding function. When the moving rod 4 oscillates to remove bubbles, it can drive the demoulding shaft 5 to rotate and store energy, realizing the linkage function. After the casting is completed, the automatic demoulding function can be realized by the sliding slide 501. At the same time, the stabilizing plate 6 and the protective plate 201 of the device can protect the outer wall of the mold. The stabilizing plate 6, the protective plate 201 and the demoulding plate 102 form a protective space, which can avoid the deformation of the mold caused by uneven force or external influence during demoulding, and ensure the integrity of the mold. The device can automatically demould without manual contact and no additional power support. The demoulding and oscillation to remove bubbles of the device form a linkage effect.

[0052] As attached Figure 4 and attached Figure 9As shown, a main pipe 801 is installed on the outer wall of the cooling bag 8, a valve is installed inside the main pipe 801, a driving gear 811 is installed on the rotating shaft of the valve, the driving gear 811 is meshed and connected with the driving gear plate 205, a branch pipe 802 is installed at the water outlet end of the main pipe 801, the branch pipe 802 is connected to the water outlet pipe 803, and the water outlet pipe 803 is installed at the bottom of the side wall of the cover plate 2.

[0053] As attached Figure 10 As shown, a fixed plate 804 is fixedly installed inside the water outlet pipe 803, and a sealing hole 805 is opened on the outer wall of the fixed plate 804. A sliding plate 806 is slidably connected to the upper part of the fixed plate 804 and the inner part of the water outlet pipe 803. A sealing column 808 is fixedly installed on the bottom of the sliding plate 806. The sealing column 808 matches the sealing hole 805. A water inlet hole 809 is opened on the inner wall of the sliding plate 806. A top column 807 is fixedly installed on the bottom of the sliding plate 806. The lower part of the top column 807 slides. On the inner wall of the fixed disk 804, a return spring 810 is fixedly installed on the outer wall of the bottom of the top column 807, and the other end of the return spring 810 is fixedly connected to the bottom of the fixed disk 804; the inside of the cooling pipe 101 is fixedly installed with a top plate 104, and the top plate 104 matches the bottom of the top column 807; when the cover plate 2 and the mold box 1 are locked, the water outlet pipe 803 will be plugged into the inside of the cooling pipe 101, so that the top column 807 and the top plate 104 will hit each other, and the top column 807 will hit each other. 07 is forced to push upward, and the sliding plate 806 moves upward. In the initial state, the push column 807 seals the sealing hole 805. After the sliding plate 806 moves upward, the interior of the water outlet pipe 803 and the interior of the cooling pipe 101 are in a conductive state. When injecting the injection molding liquid, the rise of the stabilizing plate 6 can drive the driving gear plate 205 to move upward, thereby causing the driving gear 811 to open the valve of the main pipe 801, and the coolant flows to the walls of the mold box 1 and the cover plate 2 through the branch pipe 802, thereby realizing the cooling function; the device is provided with the driving gear plate 205 and the driving gear 811, so that the cooling of the device and the injection of the injection molding liquid are linked. When injecting the injection molding liquid, cooling can be carried out synchronously and shaping can be carried out quickly. At the same time, under the action of the water outlet pipe 803 and the cooling pipe 101, the discharge of the coolant when the mold box 1 and the cover plate 2 are not condensed can be avoided, and the waste of the coolant caused by the outflow when the cover plate 2 rises for demoulding can be avoided.

[0054] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. An injection molding machine for producing medical plastics, comprising a mold box (1), a cover plate (2) and a fixing plate (3), characterized in that: The cover plate (2) is installed on the upper part of the mold box (1), and the mold box (1) is slidably connected to the inner wall of the fixed plate (3). The interior of the cover plate (2) is slidably connected to a protective plate (201), and the interior of the protective plate (201) is slidably connected to a stabilizing plate (6), and the stabilizing plate (6) matches the air outlet pipe (7). The air outlet pipe (7) is installed inside the cover plate (2), and a cooling bag (8) is installed inside the cover plate (2), and the cooling bag (8) matches the inner wall of the mold box (1); The lower part of the fixed plate (3) is internally connected to a driving rod (4), the driving rod (4) matches the mold box (1), the driving rod (4) is connected to the demoulding shaft (5), the demoulding shaft (5) is connected to the internal driving of the mold box (1), a feed box (10) is installed on the outer wall of the fixed plate (3), the feed box (10) is connected to the mold box (1) through a hose, and a demoulding cylinder (9) is installed on the upper part of the feed box (10).

2. The injection molding machine for producing medical plastics according to claim 1, characterized in that: A slider (206) is fixedly installed on the side wall of the cover plate (2) and the mold box (1), and the slider (206) is slidably connected to the inside of the slide groove (301), and the slide groove (301) is located on the inner side wall of the fixed plate (3).

3. The injection molding machine for producing medical plastics according to claim 2, characterized in that: A cooling pipe (101) is installed on the inner wall of the mold box (1), and the cooling pipe (101) matches the cooling bag (8). A stripping plate (102) is slidably connected to the inner bottom wall of the mold box (1), and a threaded block (103) is fixedly installed on the bottom of the stripping plate (102); A compression spring (203) is fixedly installed on the top of the protective plate (201), and the other end of the compression spring (203) is fixedly connected to the inner top wall of the cover plate (2). A partition (202) is installed inside the cover plate (2), and a push-up spring (204) is fixedly installed on the bottom of the partition (202), and the other end of the push-up spring (204) is fixedly connected to the top wall of the stabilizing plate (6). A driving tooth plate (205) is fixedly installed on the top of the stabilizing plate (6), and the driving tooth plate (205) is driven by the cooling bag (8).

4. The injection molding machine for producing medical plastics according to claim 3, characterized in that: An exhaust groove (601) is provided on the inner wall of the stabilizing plate (6), a fixed plate (602) is fixedly installed on the inner bottom wall of the exhaust groove (601), the interior of the fixed plate (602) is sealed and slidably connected to a sliding inclined plate (603), the number of the sliding inclined plates (603) is two, the two sliding inclined plates (603) are arranged opposite to each other, and the opposite ends are set as inclined surfaces, a sealing spring (604) is fixedly installed on the opposite end of the sliding inclined plate (603), and the other end of the sealing spring (604) is fixedly connected to the inner wall of the fixed plate (602); The bottom of the air outlet pipe (7) matches the sliding inclined plate (603), and an exhaust net (701) is installed at the bottom of the air outlet pipe (7), and the exhaust net (701) is communicated with the inner wall of the air outlet pipe (7).

5. The injection molding machine for producing medical plastics according to claim 4, characterized in that: One end of the driving rod (4) is fixedly connected to the output end of the driving motor (401), and the driving motor (401) is fixedly mounted on the outer wall of the fixing plate (3); An eccentric wheel (402) is fixedly mounted on the outer wall of one end of the driving rod (4), and the eccentric wheel (402) matches the bottom of the mold box (1).

6. The injection molding machine for producing medical plastics according to claim 5, characterized in that: A rotating bevel gear (403) is fixedly mounted on the outer wall of the driving rod (4); A slide cylinder (501) is slidably connected to the outer wall of the demoulding shaft (5) via a limit strip (502), and a sliding bevel gear (503) is installed on the outer wall of the slide cylinder (501), and the sliding bevel gear (503) is meshed and connected with the rotating bevel gear (403); A spiral spring (504) is installed on the outer wall of the bottom of the demoulding shaft (5), and the other end of the spiral spring (504) is fixedly installed on the inner bottom wall of the fixed plate (3). The top of the slide cylinder (501) is unidirectionally driven and connected to a bidirectional screw (505), and the threaded block (103) is threadedly connected to the outer wall of the bidirectional screw (505).

7. The injection molding machine for producing medical plastics according to claim 6, characterized in that: An inner cavity (506) is provided inside the bidirectional lead screw (505), and an inclined block (507) is slidably connected inside the inner cavity (506). One end of the inclined block (507) is in the shape of a triangle. An extrusion spring (508) is fixedly installed on one end of the inclined block (507) located inside the inner cavity (506), and the other end of the extrusion spring (508) is fixedly connected to the inner wall of the inner cavity (506). An inclined groove (509) is provided on the inner wall of one end of the demoulding shaft (5), and the inclined groove (509) matches the inclined block (507); The output end of the demoulding cylinder (9) is fixedly installed with a demoulding module (901), and the top of the fixed plate (3) is rotatably connected to a hinge shaft (11), one end of a stretching cable (12) is wound around the outer wall of the hinge shaft (11), and the other end of the stretching cable (12) is fixedly connected to the top of the cover plate (2).

8. The injection molding machine for producing medical plastics according to claim 7, characterized in that: A main pipe (801) is installed on the outer wall of the cooling bag (8), a valve is installed inside the main pipe (801), a driving gear (811) is installed on the rotating shaft of the valve, the driving gear (811) is meshed and connected with the driving gear plate (205), a branch pipe (802) is installed at the water outlet end of the main pipe (801), the branch pipe (802) is connected to the water outlet pipe (803), and the water outlet pipe (803) is installed at the bottom of the side wall of the cover plate (2).

9. The injection molding machine for producing medical plastics according to claim 8, characterized in that: A fixed disk (804) is fixedly installed inside the water outlet pipe (803), a sealing hole (805) is provided on the outer wall of the fixed disk (804), a sliding disk (806) is slidably connected to the upper part of the fixed disk (804) and the inside of the water outlet pipe (803), a sealing column (808) is fixedly installed on the bottom of the sliding disk (806), the sealing column (808) matches the sealing hole (805), a water inlet hole (809) is provided on the inner wall of the sliding disk (806), a top column (807) is fixedly installed on the bottom of the sliding disk (806), the lower part of the top column (807) slides on the inner wall of the fixed disk (804), a reset spring (810) is fixedly installed on the outer wall of the bottom of the top column (807), and the other end of the reset spring (810) is fixedly connected to the bottom of the fixed disk (804); A top plate (104) is fixedly installed inside the cooling pipe (101), and the top plate (104) matches the bottom of the top column (807).

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