A mold removal mechanism and mold removal method for injection molding machine for plastic mold processing

Abstract

The invention relates to the technical field of injection molds, and discloses a mold removal mechanism of an injection molding machine for processing plastic molds, comprising a base, a discharging mechanism, a ventilation mechanism, an anti-blocking mechanism and a spraying mechanism; a guide column is fixedly connected to the top of the base, a support plate is fixedly connected to the top of the guide column, a pressure plate is fixedly connected to the rear of the support plate, a hydraulic cylinder is fixedly connected to the top of the support plate, a lower mold is installed on the top of the base, an upper mold is slidably connected to the surface of the guide column, an arc plate is rotatably connected to the rear of the upper mold by a torsion spring, the discharging mechanism comprises a pressure rod, a moving rod, a roller, a moving plate, an inclined block and a top plate, the pressure rod is fixedly connected to both sides of the upper mold, and the moving rod is slidably connected to the inner wall of the lower mold by a spring. The invention can realize automatic discharging of molded plastic without the need for a robot or a worker to operate, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a mold taking mechanism and a mold taking method for an injection molding machine used for processing plastic molds. Background Art

[0002] An injection mold is a tool used in the injection molding process to inject molten plastic material into the mold cavity, which forms the desired plastic product after cooling and hardening. An injection mold usually consists of two or more parts and is designed to be separated for demoulding.

[0003] The patent with application number CN201921717807.1 belongs to the field of injection mold technology, and is particularly an injection mold that is easy to dissipate heat, including a top plate, a bottom plate, a lower mold and an upper mold, and also includes a base, on the top surface of which two relatively distributed side plates are installed, and the injection mold is installed on the top surface of the base through the bottom plate and is located on the inner side of the two side plates; cooling fans are respectively installed on the opposite surfaces of the two side plates; liquid inlet pipes and liquid outlet pipes are respectively installed on the two side surfaces of the upper mold, and a cooling flow channel connected to both the liquid inlet pipe and the liquid outlet pipe is opened in the upper mold; the injection molding of this patent The mold can be cooled from the outside and the inside at the same time by means of the cooling fan and the cooling channel, and the cooling efficiency is high, and the plastic part molding efficiency is high; after the upper mold and the lower mold are closed, they are further stabilized by a manual auxiliary stabilization component to avoid the mold from shaking during the injection molding process, thereby improving stability and the quality of plastic parts. However, this device requires workers to manually or mechanically remove the molded plastic parts, and this removal method is inefficient, thereby affecting the processing efficiency of the injection mold. Therefore, a mold removal mechanism and a mold removal method for an injection molding machine for plastic mold processing are proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mold removal mechanism and a mold removal method for an injection molding machine for plastic mold processing in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a mold removal mechanism for an injection molding machine for plastic mold processing, including a base, a discharging mechanism, a ventilation mechanism, an anti-blocking mechanism and a spraying mechanism; the top of the base is fixedly connected with a guide column, the top of the guide column is fixedly connected with a support plate, the rear of the support plate is fixedly connected with a pressure plate, the top of the support plate is fixedly connected with a hydraulic cylinder, the top of the support plate is fixedly connected with a lower mold, the surface of the guide column is slidably connected with an upper mold, and the rear of the upper mold is rotatably connected with an arc plate through a torsion spring; The discharging mechanism includes a pressure rod, a moving rod, a roller, a moving plate, an inclined block and a top plate, wherein the pressure rod is fixedly connected to both sides of the upper mold, the moving rod is slidably connected to the inner wall of the lower mold through a spring, the roller is rotatably connected to one end of the moving rod close to the pressure rod, the moving plate is slidably connected to the inner wall of the lower mold through an elastic member, the inclined block is fixedly connected to both sides of the moving plate, and the top plate is fixedly connected to the top of the moving plate; the ventilation mechanism is arranged on the inner wall of the upper mold, the anti-blocking mechanism is arranged on the inner wall of the upper mold, and the spraying mechanism is arranged on the inner wall of the arc plate The output end of the hydraulic cylinder is fixedly connected to the top of the upper mold, the bottom of the upper mold and the top of the lower mold are in contact with each other, the inner wall of the lower mold and the surface of the guide column are in contact with each other, the surface of the roller and the surface of the pressure rod are in contact with each other, the end of the moving rod away from the roller is in contact with the side of the inclined block away from the moving plate, and the surface of the top plate is in contact with the inner wall of the lower mold. When the plastic is formed, the hydraulic cylinder will drive the upper mold to move up, and the molded plastic will remain on the lower mold through gravity. At this time, the upper mold drives the pressure rod to move up, so that the pressure rod no longer pushes the moving rod through the roller. The upper mold moves, and the moving rod will be reset by the spring. When the moving rod is reset, the inclined block will no longer be limited. At this time, the elastic member will drive the moving plate and the inclined block to move up and reset. The moving plate will drive the top plate to move up, and the top plate will lift the molded plastic to discharge the material. At the same time, when the upper mold moves up, it will drive the arc plate to move up, and the arc plate will contact the pressure plate, and the pressure plate will push the arc plate to rotate in the opposite direction. The arc plate will rotate between the upper mold and the lower mold and push the lifted plastic forward to discharge the material, thereby realizing automatic discharge of the molded plastic without the need for a robot or worker to operate, thereby improving work efficiency.

[0006] Preferably, the ventilation mechanism includes a sliding rod, a lower chuck, an upper chuck and an air hole, the sliding rod is slidably connected to the inner wall of the upper mold, the lower chuck is fixedly connected to the bottom end of the sliding rod, the upper chuck is fixedly connected to the top end of the sliding rod, and the air hole is opened on the inner wall of the lower mold; the ventilation mechanism also includes a spiral rod, a rotating disk, an arc block, a knocking rod and a limit plate, the spiral rod is movably connected to the inner wall of the sliding rod, the rotating disk is fixedly connected to the top end of the spiral rod, and the arc block is fixedly connected to the rotating disk The bottom of the limit plate is slidably connected to the inner wall of the upper mold, and the limit plate is fixedly connected to the surface of the knocking rod; the surface of the lower chuck is slidably connected to the inner wall of the lower mold, the surface of the upper chuck is slidably connected to the inner wall of the upper mold, the surface of the spiral rod is rotatably connected to the inner wall of the upper mold, the lower surface of the arc block is in contact with the top of the knocking rod, and the bottom of the limit plate is slidably connected to the inner wall of the upper mold through a spring. The material is damaged. When the slide rod moves upward, it will move in the spiral groove on the surface of the spiral rod through the block on the inner wall. The movement of the block in the spiral groove will push the spiral rod to rotate, and the spiral rod will drive the turntable to rotate. The turntable will drive the arc block to rotate. The arc block will reciprocate in contact with the knocking rod and push the knocking rod to move down reciprocatingly and hit the inner wall of the upper mold, thereby causing the upper mold to vibrate. The vibration can promote the demolding of the plastic in the upper mold when the mold is separated, preventing the plastic from moving up with the upper mold, thereby affecting the subsequent plastic discharge.

[0007] Preferably, the anti-blocking mechanism includes a clamping rod, an outer sleeve, an inner sleeve and a heating tube, the clamping rod is fixedly connected to the surface of the limit plate, the outer sleeve is rotatably connected to the inner wall of the upper mold, the inner sleeve is movably connected to the inner wall of the outer sleeve, and the heating tube is slidably connected to the inner wall of the inner sleeve; the anti-blocking mechanism also includes a transmission rod and a ball, the transmission rod is slidably connected to the inner wall of the inner sleeve through a spring, and the ball is fixedly connected to both ends of the transmission rod; spiral grooves are provided on the surfaces of the outer sleeve and the inner sleeve, the end of the clamping rod away from the limit plate is located in the spiral groove on the surface of the outer sleeve, the inner wall of the outer sleeve is provided with a clamping block, and the clamping block is located in the spiral groove on the surface of the inner sleeve, when the knocking rod moves up and reciprocates, the limit plate will be driven to move together, and the limit plate will drive the clamping rod to move together, and the clamping rod drives the spiral groove on the surface of the outer sleeve to move The outer sleeve rotates, and the outer sleeve drives the inner sleeve to rotate by pushing the spiral groove on the surface of the inner sleeve through the block on the inner wall, but the inner sleeve is limited by the heating tube and cannot rotate, so the inner sleeve can only move up and down on the surface of the heating tube, and the inner sleeve will collide with the inner wall of the upper mold after moving, thereby causing vibration at the injection hole, causing the residual raw material in the injection hole to fall off, preventing excess raw material from being blocked in the injection hole and affecting subsequent processing injection molding, and at the same time, when the inner sleeve moves up and down, it will drive the transmission rod to move together, and the transmission rod will drive the ball to move, so that the ball collides with the inner wall of the upper mold, and the vibration generated will be transmitted to the spring on the surface of the transmission rod, and the spring will convert a single vibration into multiple vibrations, thereby enhancing its vibration effect, ensuring that the raw material in the injection hole can be effectively vibrated off, and the heating tube will heat and melt the blocked raw material again and make it fall off through vibration.

[0008] Preferably, the spraying mechanism includes a material box and a spray head, the material box is fixedly connected to the inner wall of the arc plate, and the spray head is installed at the top and bottom of the material box; the spraying mechanism also includes an elastic plate, a pull rod, a pull plate and a transmission plate, one side of the elastic plate is fixedly connected to the inner wall of the material box, the pull rod is fixedly connected to the lower surface of the elastic plate, the pull plate is fixedly connected to the end of the pull rod away from the elastic plate, the transmission plate is fixedly connected to the side of the elastic plate away from the material box, the surface of the transmission plate is in contact with the inner walls of the material box and the arc plate respectively, and when the mold is separated, the arc plate will drive the material box to move to the upper and lower molds. The mold release agent in the material box is pushed up by the nozzles at the top and bottom of the material box, so that the mold release agent is sprayed on the inner wall of the mold, thereby facilitating the subsequent demoulding of the plastic. At the same time, the arc plate rotates to drive the transmission plate to move, and the transmission plate will contact the discharged plastic and push the plastic out, and the transmission plate will move in the opposite direction under the reaction force, and the transmission plate will push the elastic plate to deform and arch, and the elastic plate will drive the pull rod to move up, and the pull rod will drive the pull plate to move up, and the pull plate will push the release agent at the bottom of the material box to move up, ensuring that the upper nozzle can effectively spray the release agent to prevent only the lower nozzle from spraying when there is less release agent.

[0009] A method for removing a mold from a mold removal mechanism of an injection molding machine for processing a plastic mold, comprising the following steps:

[0010] Step 1: After the plastic is formed, the hydraulic cylinder will drive the upper mold to move upward, and gravity will keep the molded plastic on the lower mold. At this time, the upper mold will drive the pressure rod to move upward, so that the pressure rod will no longer push the moving rod to move through the roller. At this time, the moving rod will reset under the action of the spring;

[0011] Step 2: When the moving rod is reset, it will no longer limit the inclined block. At this time, the elastic member will drive the moving plate and the inclined block to move upward and reset, and the moving plate will drive the top plate to move upward, and the top plate will lift the formed plastic to discharge the material;

[0012] Step 3: When the upper mold moves up, it will drive the arc plate to move up, and the arc plate will contact the pressure plate, and the pressure plate will push the arc plate to rotate in the opposite direction. The arc plate will rotate between the upper mold and the lower mold and push the lifted plastic forward to discharge the material, thereby realizing the automatic discharge and removal of the plastic.

[0013] The present invention adopts the above technical solution to bring the following beneficial effects:

[0014] 1. The mold-taking mechanism and mold-taking method of the injection molding machine for plastic mold processing, through the cooperation between the base, guide column, support plate, pressure plate, arc plate, hydraulic cylinder, lower mold, upper mold, pressure rod, moving rod, roller, moving plate, inclined block and top plate, when the plastic is formed, the hydraulic cylinder will drive the upper mold to move up, and the molded plastic will remain on the lower mold by gravity. At this time, the upper mold drives the pressure rod to move up, so that the pressure rod no longer pushes the moving rod to move through the roller. At this time, the moving rod will reset under the action of the spring, and when the moving rod is reset, it will no longer limit the inclined block. At this time, the elastic member will drive the moving plate and the inclined block to move up and reset, the moving plate will drive the top plate to move up, and the top plate will lift the molded plastic to discharge the material. At the same time, when the upper mold moves up, it will drive the arc plate to move up, the arc plate will contact the pressure plate, and the pressure plate will push the arc plate to rotate in the opposite direction. The arc plate will rotate between the upper mold and the lower mold and push the lifted plastic to move forward to discharge the material, thereby realizing automatic discharge of the molded plastic without the need for a robot or a worker to operate, thereby improving work efficiency.

[0015] 2. The mold-taking mechanism and mold-taking method of the injection molding machine for plastic mold processing, through the coordinated operation among the slide bar, the lower chuck, the upper chuck, the air hole, the spiral rod, the turntable, the arc block, the knocking rod, and the limit plate, when the mold is separated, the upper mold moves up and drives the upper chuck to move to the bottom wall inside the upper mold. When the upper mold continues to move up, it drives the upper chuck to move up, the upper chuck drives the slide bar to move up, the slide bar drives the lower chuck to move up, the lower chuck moves up and pushes the gas in the lower mold into the air hole. At this time, the top plate moves up and the gas is blown out from the air hole. The blown gas enters between the plastic and the lower mold, thereby helping the plastic to leave the mold and preventing the plastic from being adsorbed in the lower mold due to vacuum, which leads to the top plate moving up and failing to push the plastic to be effectively discharged. The suction force is large during the process, resulting in the plastic being damaged when the top plate pushes the material.

[0016] 3. The mold-taking mechanism and mold-taking method of the injection molding machine for plastic mold processing, through the coordinated operation among the clamping rod, the outer sleeve, the inner sleeve, the heating tube, the transmission rod and the ball, when the knocking rod moves up and reciprocates, it will drive the limit plate to move together, and the limit plate will drive the clamping rod to move together, and the clamping rod drives the outer sleeve to rotate by pushing the spiral groove on the surface of the outer sleeve, and the outer sleeve drives the inner sleeve to rotate by pushing the spiral groove on the surface of the inner sleeve through the clamping block on the inner wall, but the inner sleeve is limited by the heating tube and cannot rotate, so the inner sleeve can only move up and down on the surface of the heating tube, and the inner sleeve will collide with the inner wall of the upper mold after moving, so as to generate vibration at the injection hole, prompting the residual raw material in the injection hole to fall off, and preventing excess raw material from being blocked in the injection hole and affecting subsequent processing injection molding.

[0017] 4. The mold-taking mechanism and mold-taking method of the injection molding machine for plastic mold processing, through the coordinated operation among the material box, the nozzle, the elastic plate, the pull rod, the pull plate and the transmission plate, when the mold is separated, the arc plate will drive the material box to move between the upper mold and the lower mold, at this time, the nozzles at the top and bottom of the material box will spray the release agent in the material box, so that the release agent is sprayed on the inner wall of the mold, thereby facilitating the subsequent demolding of the plastic, and at the same time, when the arc plate rotates, it will drive the transmission plate to move, the transmission plate will contact the discharged plastic and push the plastic out, and the transmission plate will move in the opposite direction under the reaction force, the transmission plate will push the elastic plate to deform and arch, the elastic plate will drive the pull rod to move up, the pull rod will drive the pull plate to move up, and the pull plate will push the release agent at the bottom of the material box to move up, to ensure that the upper nozzle can effectively spray the release agent, to prevent only the lower nozzle from spraying when the release agent is less. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A half-section view of the upper mold structure of the present invention;

[0020] Figure 3 A half-section view of the lower mold structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the curved plate of the present invention;

[0022] Figure 5 A half-section diagram of the slide bar structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the clamping rod structure of the present invention;

[0024] Figure 7 A half-section view of the outer sleeve structure of the present invention;

[0025] Figure 8 It is a half-section diagram of the material box structure of the present invention.

[0026] In the figure: 1. base; 2. guide column; 3. support plate; 31. pressure plate; 32. arc plate; 4. hydraulic cylinder; 5. lower die; 6. upper die; 61. pressure rod; 62. moving rod; 63. roller; 64. moving plate; 65. inclined block; 66. top plate; 7. ventilation mechanism; 71. slide rod; 72. lower chuck; 73. upper chuck; 74. air hole; 741. screw rod; 742. turntable; 743. arc block; 744. knocking rod; 745. limit plate; 8. anti-blocking mechanism; 81. clamping rod; 82. outer sleeve; 83. inner sleeve; 84. heating tube; 841. transmission rod; 842. sphere; 9. spraying mechanism; 91. material box; 92. nozzle; 921. elastic plate; 922. pull rod; 923. pull plate; 924. transmission plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-5An embodiment of the present invention is: a mold removal mechanism and mold removal method for an injection molding machine for plastic mold processing, comprising a base 1, a discharging mechanism, a ventilation mechanism 7, an anti-blocking mechanism 8 and a spraying mechanism 9; a guide column 2 is fixedly connected to the top of the base 1, a support plate 3 is fixedly connected to the top of the guide column 2, a pressure plate 31 is fixedly connected to the rear of the support plate 3, a hydraulic cylinder 4 is fixedly connected to the top of the support plate 3, a lower mold 5 is installed on the top of the base 1, an upper mold 6 is slidably connected to the surface of the guide column 2, and an arc plate 32 is rotatably connected to the rear of the upper mold 6 through a torsion spring; the discharging mechanism comprises a pressure rod 61, a moving rod 62, Roller 63, moving plate 64, inclined block 65 and top plate 66, pressure rod 61 is fixedly connected to both sides of upper mold 6, moving rod 62 is slidably connected to the inner wall of lower mold 5 through spring, roller 63 is rotatably connected to one end of moving rod 62 close to pressure rod 61, moving plate 64 is slidably connected to the inner wall of lower mold 5 through elastic member, inclined block 65 is fixedly connected to both sides of moving plate 64, top plate 66 is fixedly connected to the top of moving plate 64, when plastic is formed, hydraulic cylinder 4 will drive upper mold 6 to move up, and gravity makes formed plastic remain on lower mold 5, at this time upper mold 6 drives pressure rod 61 to move up, so that pressure rod 61 is no longer The moving rod 62 is pushed to move by the roller 63, and the moving rod 62 will be reset by the spring. When the moving rod 62 is reset, it will no longer limit the inclined block 65. At this time, the elastic member will drive the moving plate 64 and the inclined block 65 to move up and reset, and the moving plate 64 will drive the top plate 66 to move up, and the top plate 66 will lift the molded plastic to discharge the material; the ventilation mechanism 7 is arranged on the inner wall of the upper mold 6, the anti-blocking mechanism 8 is arranged on the inner wall of the upper mold 6, and the spraying mechanism 9 is arranged on the inner wall of the arc plate 32; the output end of the hydraulic cylinder 4 is fixedly connected to the top of the upper mold 6, the bottom of the upper mold 6 is in contact with the top of the lower mold 5, and the inner wall of the lower mold 5 is in contact with The surfaces of the guide pillars 2 are in contact with each other, the surfaces of the rollers 63 are in contact with the surfaces of the pressure rods 61, the end of the moving rod 62 away from the roller 63 is in contact with the side of the inclined block 65 away from the moving plate 64, the surface of the top plate 66 is in contact with the inner wall of the lower mold 5, and when the upper mold 6 moves upward, it will drive the arc plate 32 to move upward, and the arc plate 32 will contact the pressure plate 31, and the pressure plate 31 will push the arc plate 32 to rotate in the opposite direction, and the arc plate 32 will rotate between the upper mold 6 and the lower mold 5 and push the lifted plastic forward to discharge the material, thereby realizing automatic discharge of the molded plastic without the need for a robot or worker to operate, thereby improving work efficiency.

[0029] The ventilation mechanism 7 includes a slide bar 71, a lower chuck 72, an upper chuck 73 and an air hole 74. The slide bar 71 is slidably connected to the inner wall of the upper mold 6, the lower chuck 72 is fixedly connected to the bottom end of the slide bar 71, the upper chuck 73 is fixedly connected to the top of the slide bar 71, and the air hole 74 is opened on the inner wall of the lower mold 5. When the mold is separated, the upper mold 6 moves up to drive the upper chuck 73 to move to the bottom wall inside the upper mold 6. When the upper mold 6 continues to move up, it will drive the upper chuck 73 to move up, and the upper chuck 73 will drive the slide bar 71 to move up. The slide bar 71 will drive the lower chuck 72 to move up, and the lower chuck 72 will move up and the lower mold 5 is pushed into the air hole 74, at which time the top plate 66 moves up and the gas is blown out from the air hole 74, and the blown gas enters between the plastic and the lower mold 5, thereby helping the plastic to separate from the mold and preventing the plastic from being adsorbed in the lower mold 5 due to vacuum, thereby causing the top plate 66 to move up and fail to push the plastic to be effectively discharged, and the suction force is large during the process, causing the plastic to be damaged when the top plate 66 pushes the material; the ventilation mechanism 7 also includes a spiral rod 741, a rotating disk 742, an arc block 743, a knocking rod 744 and a limit plate 745, the spiral rod 741 is movably connected to the inner wall of the sliding rod 71, the rotating disk 7 42 is fixedly connected to the top of the spiral rod 741, the arc block 743 is fixedly connected to the bottom of the turntable 742, the knocking rod 744 is slidably connected to the inner wall of the upper mold 6, and the limit plate 745 is fixedly connected to the surface of the knocking rod 744; the surface of the lower chuck 72 is slidably connected to the inner wall of the lower mold 5, the surface of the upper chuck 73 is slidably connected to the inner wall of the upper mold 6, the surface of the spiral rod 741 is rotatably connected to the inner wall of the upper mold 6, the lower surface of the arc block 743 is in contact with the top of the knocking rod 744, and the bottom of the limit plate 745 is slidably connected to the inner wall of the upper mold 6 through a spring. When the slide rod 71 moves upward, it will move in the spiral groove on the surface of the spiral rod 741 through the block on the inner wall, and the movement of the block in the spiral groove will push the spiral rod 741 to rotate, and the spiral rod 741 will drive the turntable 742 to rotate, and the turntable 742 will drive the arc block 743 to rotate, and the arc block 743 will reciprocately contact with the knocking rod 744 and push the knocking rod 744 to move reciprocally downward and hit the inner wall of the upper mold 6, thereby causing the upper mold 6 to vibrate. The vibration can promote the demolding of the plastic in the upper mold 6 when the mold is separated, and prevent the plastic from moving up with the upper mold 6, thereby affecting the subsequent discharge of the plastic.

[0030] Working principle: after the plastic is formed, the hydraulic cylinder 4 will drive the upper mold 6 to move up, and the molded plastic will remain on the lower mold 5 through gravity. At this time, the upper mold 6 drives the pressure rod 61 to move up, so that the pressure rod 61 no longer pushes the moving rod 62 to move through the roller 63. At this time, the moving rod 62 will reset under the action of the spring. When the moving rod 62 is reset, it will no longer limit the inclined block 65. At this time, the elastic member will drive the moving plate 64 and the inclined block 65 to move up and reset, and the moving plate 64 will drive the top plate 66 to move up, and the top plate 66 will lift the molded plastic to discharge the material. At the same time, when the upper mold 6 moves up, it will drive the arc plate 32 to move up, and the arc plate 32 will contact the pressure plate 31, and the pressure plate 31 will push the arc plate 32 to rotate in the opposite direction. The arc plate 32 will rotate between the upper mold 6 and the lower mold 5 and push the lifted plastic forward to discharge the material, thereby realizing automatic discharge of the molded plastic without the need for a robot or worker to operate, thereby improving work efficiency.

[0031] When the mold is separated, the upper mold 6 moves up and drives the upper chuck 73 to move to the bottom wall inside the upper mold 6. When the upper mold 6 continues to move up, it drives the upper chuck 73 to move up, and the upper chuck 73 drives the slide bar 71 to move up. The slide bar 71 drives the lower chuck 72 to move up. The lower chuck 72 moves up and pushes the gas in the lower mold 5 into the air hole 74. At this time, the top plate 66 moves up and the gas is blown out from the air hole 74. The blown gas enters between the plastic and the lower mold 5, thereby helping the plastic to leave the mold and preventing the plastic from being adsorbed in the lower mold 5 due to vacuum, which leads to the top plate 66 moving up and failing to push the plastic to be effectively discharged. The suction force is large during the process. The top plate 66 damages the plastic when pushing the material. When the slide rod 71 moves upward, it will move in the spiral groove on the surface of the spiral rod 741 through the block on the inner wall. The movement of the block in the spiral groove will push the spiral rod 741 to rotate, and the spiral rod 741 will drive the turntable 742 to rotate. The turntable 742 will drive the arc block 743 to rotate. The arc block 743 will reciprocate and contact with the knocking rod 744 and push the knocking rod 744 to move reciprocatingly downward and hit the inner wall of the upper mold 6, thereby causing the upper mold 6 to vibrate. The vibration can promote the demolding of the plastic in the upper mold 6 when the mold is separated, and prevent the plastic from moving up with the upper mold 6, thereby affecting the subsequent discharge of the plastic.

[0032] See also Figure 6-8On the basis of the above embodiment, in another embodiment of the present invention, the anti-blocking mechanism 8 includes a clamping rod 81, an outer sleeve 82, an inner sleeve 83 and a heating tube 84. The clamping rod 81 is fixedly connected to the surface of the limit plate 745, the outer sleeve 82 is rotatably connected to the inner wall of the upper mold 6, the inner sleeve 83 is movably connected to the inner wall of the outer sleeve 82, and the heating tube 84 is slidably connected to the inner wall of the inner sleeve 83. When the knocking rod 744 moves up and reciprocates, it will drive the limit plate 745 to move together, and the limit plate 745 will bring The movable clamping rod 81 moves together, and the clamping rod 81 drives the outer sleeve 82 to rotate by pushing the spiral groove on the surface of the outer sleeve 82. The outer sleeve 82 drives the inner sleeve 83 to rotate by pushing the spiral groove on the surface of the inner sleeve 83 through the clamping block on the inner wall. However, the inner sleeve 83 is limited by the heating tube 84 and cannot rotate. Therefore, the inner sleeve 83 can only move up and down on the surface of the heating tube 84. After the inner sleeve 83 moves, it will collide with the inner wall of the upper mold 6, thereby causing vibration at the injection hole, causing the residual raw material in the injection hole to fall off. Prevent excess raw materials from clogging in the injection hole and thus affecting subsequent processing and injection molding; the anti-blocking mechanism 8 also includes a transmission rod 841 and a ball 842, the transmission rod 841 is slidably connected to the inner wall of the inner sleeve 83 through a spring, and the ball 842 is fixedly connected to both ends of the transmission rod 841; the surfaces of the outer sleeve 82 and the inner sleeve 83 are both provided with spiral grooves, and the end of the clamping rod 81 away from the limit plate 745 is located in the spiral groove on the surface of the outer sleeve 82, and the inner wall of the outer sleeve 82 is provided with a clamping block, and the clamping block is located inside In the spiral groove on the surface of the sleeve 83, when the inner sleeve 83 moves up and down, it will drive the transmission rod 841 to move together, and the transmission rod 841 will drive the ball 842 to move, so that the ball 842 collides with the inner wall of the upper mold 6, and the generated vibration will be transmitted to the spring on the surface of the transmission rod 841, and the spring will convert a single vibration into multiple vibrations, thereby enhancing its vibration effect, ensuring that the raw material in the injection hole can be effectively vibrated out, and the heating tube 84 will heat and melt the blocked raw material again and make it fall through vibration.

[0033] The spraying mechanism 9 includes a material box 91 and a nozzle 92. The material box 91 is fixedly connected to the inner wall of the arc plate 32. The nozzle 92 is installed at the top and bottom of the material box 91. When the mold is separated, the arc plate 32 will drive the material box 91 to move between the upper mold 6 and the lower mold 5. At this time, the nozzles 92 at the top and bottom of the material box 91 will spray the release agent in the material box 91, so that the release agent is sprayed on the inner wall of the mold, thereby facilitating the subsequent demolding of the plastic; the spraying mechanism 9 also includes an elastic plate 921, a pull rod 922, a pull plate 923 and a transmission plate 924. One side of the elastic plate 921 is fixedly connected to the inner wall of the material box 91, the pull rod 922 is fixedly connected to the lower surface of the elastic plate 921, and the pull plate 923 is fixedly connected to the pull rod 922 away from the elastic plate 92 1, a transmission plate 924 is fixedly connected to a side of the elastic plate 921 away from the material box 91, and the surfaces of the transmission plate 924 are in contact with the inner walls of the material box 91 and the arc plate 32 respectively. When the arc plate 32 rotates, the transmission plate 924 will be driven to move, and the transmission plate 924 will contact the discharged plastic and push the plastic out, and the transmission plate 924 will move in the opposite direction under the reaction force, and the transmission plate 924 will push the elastic plate 921 to deform and arch, and the elastic plate 921 will drive the pull rod 922 to move upward, and the pull rod 922 will drive the pull plate 923 to move upward, and the pull plate 923 will push the release agent at the bottom of the material box 91 to move upward, so as to ensure that the upper nozzle 92 can effectively spray the release agent, and prevent only the lower nozzle 92 from spraying when the release agent is less.

[0034] Working principle: when the knock rod 744 moves up and back and forth, it will drive the limit plate 745 to move together, and the limit plate 745 will drive the clamping rod 81 to move together. The clamping rod 81 drives the outer sleeve 82 to rotate by pushing the spiral groove on the surface of the outer sleeve 82. The outer sleeve 82 drives the inner sleeve 83 to rotate by pushing the spiral groove on the surface of the inner sleeve 83 through the clamping block on the inner wall. However, the inner sleeve 83 is limited by the heating tube 84 and cannot rotate. Therefore, the inner sleeve 83 can only move up and down on the surface of the heating tube 84. After the inner sleeve 83 moves, it will collide with the inner wall of the upper mold 6, thereby causing vibration at the injection hole to promote The residual raw material in the injection hole is made to fall off, and the excess raw material is prevented from being blocked in the injection hole and affecting the subsequent processing injection. At the same time, when the inner sleeve 83 moves up and down, it will drive the transmission rod 841 to move together, and the transmission rod 841 will drive the ball 842 to move, so that the ball 842 collides with the inner wall of the upper mold 6, and the generated vibration will be transmitted to the spring on the surface of the transmission rod 841, and the spring will convert a single vibration into multiple vibrations, thereby enhancing its vibration effect, ensuring that the raw material in the injection hole can be effectively vibrated off, and the heating tube 84 will heat and melt the blocked raw material again and make it fall off through vibration.

[0035] When the mold is separated, the arc plate 32 will drive the material box 91 to move between the upper mold 6 and the lower mold 5. At this time, the nozzles 92 at the top and bottom of the material box 91 will spray the release agent in the material box 91, so that the release agent is sprayed on the inner wall of the mold, thereby facilitating the subsequent demolding of the plastic. At the same time, when the arc plate 32 rotates, it will drive the transmission plate 924 to move. The transmission plate 924 will contact the discharged plastic and push the plastic out, and the transmission plate 924 will move in the opposite direction under the reaction force. The transmission plate 924 will push the elastic plate 921 to deform and arch, and the elastic plate 921 will drive the pull rod 922 to move upward, and the pull rod 922 will drive the pull plate 923 to move upward. The pull plate 923 will push the release agent at the bottom of the material box 91 to move upward, ensuring that the upper nozzle 92 can effectively spray the release agent to prevent only the lower nozzle 92 from spraying when there is less release agent.

[0036] The present invention provides a mold removal mechanism and mold removal method for an injection molding machine for plastic mold processing. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A mold removal mechanism for an injection molding machine for processing plastic molds, comprising a base (1), characterized in that: It also includes a discharging mechanism, a ventilation mechanism (7), an anti-blocking mechanism (8) and a spraying mechanism (9); The top of the base (1) is fixedly connected to a guide column (2), the top of the guide column (2) is fixedly connected to a support plate (3), the rear of the support plate (3) is fixedly connected to a pressure plate (31), the top of the support plate (3) is fixedly connected to a hydraulic cylinder (4), a lower mold (5) is installed on the top of the base (1), the surface of the guide column (2) is slidably connected to an upper mold (6), and the rear of the upper mold (6) is rotatably connected to an arc plate (32) via a torsion spring; The discharging mechanism comprises a pressure rod (61), a moving rod (62), a roller (63), a moving plate (64), an inclined block (65) and a top plate (66), wherein the pressure rod (61) is fixedly connected to both sides of the upper mold (6), the moving rod (62) is slidably connected to the inner wall of the lower mold (5) through a spring, the roller (63) is rotatably connected to one end of the moving rod (62) close to the pressure rod (61), the moving plate (64) is slidably connected to the inner wall of the lower mold (5) through an elastic member, the inclined block (65) is fixedly connected to both sides of the moving plate (64), and the top plate (66) is fixedly connected to the top of the moving plate (64); The ventilation mechanism (7) is arranged on the inner wall of the upper mold (6), the anti-blocking mechanism (8) is arranged on the inner wall of the upper mold (6), and the spraying mechanism (9) is arranged on the inner wall of the arc plate (32); The output end of the hydraulic cylinder (4) is fixedly connected to the top of the upper die (6), the bottom of the upper die (6) is in contact with the top of the lower die (5), the inner wall of the lower die (5) is in contact with the surface of the guide column (2), the surface of the roller (63) is in contact with the surface of the pressure rod (61), the end of the moving rod (62) away from the roller (63) is in contact with the side of the inclined block (65) away from the moving plate (64), and the surface of the top plate (66) is in contact with the inner wall of the lower die (5); The ventilation mechanism (7) comprises a slide bar (71), a lower chuck (72), an upper chuck (73) and an air hole (74); the slide bar (71) is slidably connected to the inner wall of the upper mold (6); the lower chuck (72) is fixedly connected to the bottom end of the slide bar (71); the upper chuck (73) is fixedly connected to the top end of the slide bar (71); and the air hole (74) is opened on the inner wall of the lower mold (5); The ventilation mechanism (7) also includes a spiral rod (741), a rotating disk (742), an arc block (743), a knocking rod (744) and a limiting plate (745), wherein the spiral rod (741) is movably connected to the inner wall of the sliding rod (71), the rotating disk (742) is fixedly connected to the top of the spiral rod (741), the arc block (743) is fixedly connected to the bottom of the rotating disk (742), the knocking rod (744) is slidably connected to the inner wall of the upper mold (6), and the limiting plate (745) is fixedly connected to the surface of the knocking rod (744); The surface of the lower chuck (72) is slidably connected to the inner wall of the lower mold (5), the surface of the upper chuck (73) is slidably connected to the inner wall of the upper mold (6), the surface of the spiral rod (741) is rotationally connected to the inner wall of the upper mold (6), the lower surface of the arc block (743) is in contact with the top of the knocking rod (744), and the bottom of the limit plate (745) is slidably connected to the inner wall of the upper mold (6) through a spring; The anti-blocking mechanism (8) comprises a clamping rod (81), an outer sleeve (82), an inner sleeve (83) and a heating tube (84); the clamping rod (81) is fixedly connected to the surface of the limiting plate (745); the outer sleeve (82) is rotatably connected to the inner wall of the upper mold (6); the inner sleeve (83) is movably connected to the inner wall of the outer sleeve (82); and the heating tube (84) is slidably connected to the inner wall of the inner sleeve (83).

2. The mold removal mechanism for an injection molding machine for plastic mold processing according to claim 1, characterized in that: The anti-blocking mechanism (8) also includes a transmission rod (841) and a sphere (842); the transmission rod (841) is slidably connected to the inner wall of the inner sleeve (83) via a spring, and the sphere (842) is fixedly connected to both ends of the transmission rod (841).

3. The mold removal mechanism for an injection molding machine for plastic mold processing according to claim 2, characterized in that: The surfaces of the outer sleeve (82) and the inner sleeve (83) are both provided with spiral grooves, and the end of the clamping rod (81) away from the limiting plate (745) is located in the spiral groove on the surface of the outer sleeve (82). The inner wall of the outer sleeve (82) is provided with a clamping block, and the clamping block is located in the spiral groove on the surface of the inner sleeve (83).

4. The mold removal mechanism for an injection molding machine for plastic mold processing according to claim 3, characterized in that: The spraying mechanism (9) comprises a material box (91) and a spray head (92), wherein the material box (91) is fixedly connected to the inner wall of the arc plate (32), and the spray head (92) is installed at the top and the bottom of the material box (91); the spraying mechanism (9) also comprises an elastic plate (921), a pull rod (922), a pull plate (923) and a transmission plate (924), wherein one side of the elastic plate (921) is fixedly connected to the inner wall of the material box (91), the pull rod (922) is fixedly connected to the lower surface of the elastic plate (921), the pull plate (923) is fixedly connected to an end of the pull rod (922) away from the elastic plate (921), and the transmission plate (924) is fixedly connected to a side of the elastic plate (921) away from the material box (91), and the surface of the transmission plate (924) is in contact with the inner walls of the material box (91) and the arc plate (32) respectively.

5. A method for removing molds from a mold removal mechanism of an injection molding machine for processing plastic molds according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: After the plastic is formed, the hydraulic cylinder (4) drives the upper mold (6) to move upward, and gravity makes the formed plastic remain on the lower mold (5). At this time, the upper mold (6) drives the pressure rod (61) to move upward, so that the pressure rod (61) no longer pushes the moving rod (62) to move through the roller (63). At this time, the moving rod (62) will be reset under the action of the spring; Step 2: When the moving rod (62) is reset, it will no longer limit the inclined block (65). At this time, the elastic member will drive the moving plate (64) and the inclined block (65) to move upward and reset. The moving plate (64) will drive the top plate (66) to move upward, and the top plate (66) will lift the molded plastic to discharge the material; Step 3: When the upper mold (6) moves upward, it will drive the arc plate (32) to move upward, and the arc plate (32) will contact the pressure plate (31), and the pressure plate (31) will push the arc plate (32) to rotate in the opposite direction. The arc plate (32) will rotate between the upper mold (6) and the lower mold (5) and push the lifted plastic to move forward to discharge the material, thereby realizing automatic discharge and removal of the plastic.

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