Plastic toy injection mold

Abstract

The invention discloses an injection mold for plastic toys, belongs to the technical field of injection molds, and aims to solve the problems that a light, thin and fragile injection molding part is easy to bend and even damage due to non-uniform stress and the injection molding part which has certain textures and is relatively high in fitting degree after being formed is easy to break or deform due to synchronous ejection of the mold. The mold comprises a mold body and jacking mechanisms, the jacking mechanisms used for gradient mold stripping are arranged on the two sides of the lower portion of the mold body, by means of the jacking mechanisms, when the mold is ejected out, a plurality of ejection plates can be gradually ejected out from the edge of one side to the edge of the other side, are preferentially released through the edges and then are rapidly and gradually released to one side, and therefore the mold stripping efficiency is greatly improved. The process that the edges are separated to break sealing and then demoulded step by step is achieved, stress can be dispersed, the possibility that light, thin and fragile injection molding parts and injection molding parts with the high attaching degree are bent and even damaged due to uneven synchronous pushing stress is avoided, and the yield of products can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and specifically to a plastic toy injection mold. Background Art

[0002] Plastic toys are toys mainly made of plastic. Plastic toys are a core part of the global toy industry. Their production highly depends on injection molding technology. After the molten plastic is injected into the mold cavity through the injection mold, the plastic toys are formed after cooling and solidification.

[0003] When the current plastic toy injection mold is in use, after the injection molded part is cooled and formed, the ejecting cylinder is often used to drive the ejector rod to eject the injection molded part out of the mold synchronously at one time. For injection molded parts that are relatively thin, fragile, or have uneven thickness at the edges and in the middle, synchronous ejection out of the mold is likely to cause uneven stress on such injection molded parts, resulting in possible bending or even breakage. At the same time, for thin-walled injection molded parts with certain textures and strong adhesion after molding, the instantaneous force during synchronous ejection out of the mold is also likely to cause breakage or deformation, which will affect the qualified rate of the products processed by the mold.

[0004] In view of the above problems, a plastic toy injection mold is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a plastic toy injection mold. By using this device for work, the problems in the above background, such as synchronous ejection out of the mold, which is likely to cause uneven stress on thin and fragile injection molded parts, resulting in possible bending or even breakage, and also likely to cause breakage or deformation of injection molded parts with certain textures and strong adhesion after molding, are solved.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A plastic toy injection mold includes a mold body and a jacking mechanism. The jacking mechanism for gradient ejection out of the mold is arranged on both sides below the mold body. The jacking mechanism includes a connecting sleeve, a lifting rod, a threaded end, a rotating gear disk, a threaded sleeve, a mating gear, and a fixing screw. Above the inside of the connecting sleeve, a lifting rod is arranged, and a threaded end is fixed below the lifting rod. In the middle of the inner side of the connecting sleeve, a rotating gear disk is installed, and a threaded sleeve penetrates through the middle of the rotating gear disk. On one side above the rotating gear disk, a mating gear is engaged, and a fixing screw is fixed at one end of the mating gear; On the outer side of the fixing screw, a mating sleeve is arranged, and a moving frame is fixed at the front end of the mating sleeve. On the front surface of the moving frame, a rotating joint is installed, and a rotating seat is arranged in the middle of the rotating joint. On the rear side below the rotating joint, a sliding groove is arranged, and a sliding ejector rod is installed at the upper end of the rotating joint. A top pushing plate is installed at the top of the sliding ejector rod.

[0007] Further, the mold body includes an upper mold base, a lower mold base, and a template. The lower mold base is disposed on the opposite sides below the upper mold base, and the template is disposed on the upper surface of the lower mold base.

[0008] Further, the lifting rod penetrates through the connecting sleeve, and the lifting rod is fixed below both sides of the upper mold base. The threaded end is threadedly connected to the inner wall of the threaded sleeve, and the rotating gear disk is rotatably connected to the connecting sleeve.

[0009] Further, the fixing screw is threadedly connected to the inner wall of the fitting sleeve, and two groups of moving frames are arranged before and after the fitting sleeve. The rotating seat is fixedly connected to the lower mold base, and the rotating joint is rotatably connected to the rotating seat. The front end of the rotating joint is rotatably connected to the bottom end of the sliding ejector rod, and the sliding ejector rod is slidably connected to the lower mold base. Four sliding grooves are formed on the surface of each group of moving frames, and the lengths of the four sliding grooves gradually decrease from left to right. Moreover, the length of the leftmost sliding groove in the first group is greater than the length of the leftmost sliding groove in the second group.

[0010] Further, a first compression mechanism for lifting and gas production is arranged inside the lower part of the jacking mechanism. The first compression mechanism includes a support sleeve seat, an extrusion ring, a first partition plate, a first telescopic rod, a first elastic chuck, a first piston disk, and a fixing sleeve. The extrusion ring is fixedly arranged on the outer side of the upper end inside the support sleeve seat, and the first partition plate is fixedly arranged in the middle of the inner side of the support sleeve seat. The first telescopic rod is slidably arranged in the middle of the first partition plate, and the first elastic chucks are installed on the front and rear sides of the upper surface of the first telescopic rod. The bottom of the first telescopic rod is fixedly connected to the first piston disk, and the fixing sleeve is arranged above the first telescopic rod. The fixing sleeve is fixed to the bottom of the threaded end.

[0011] Further, the first compression mechanism further includes a first exhaust valve, a first intake valve, a first outlet valve, and a first ventilation main pipe. The first exhaust valve is communicated and installed below one side of the support sleeve seat, the first intake valve is communicated and installed in the middle of one side of the support sleeve seat, the first outlet valve is communicated and installed in the middle of the other side of the support sleeve seat, and the front end of the first outlet valve is connected to the first ventilation main pipe.

[0012] Further, an inflation mechanism for auxiliary jacking is arranged inside the top of the jacking mechanism. The inflation mechanism includes a first ventilation sub-pipe, an airbag, a connecting rod, a jacking disk, and air outlet holes. The airbag is communicated and arranged in the middle above the first ventilation sub-pipe, the connecting rod is communicated and arranged in the middle above the airbag, the jacking disk is fixed to the top, and the air outlet holes are formed on both sides of the middle of the surface of the connecting rod. The first ventilation sub-pipe is communicated with the first ventilation main pipe.

[0013] Further, a second compression mechanism for positioning is provided at the rear side of the jacking mechanism. The second compression mechanism includes a positioning sleeve, a positioning rod, a second partition plate, a second telescopic rod, a second piston disk, and a second elastic chuck. A positioning rod is slidably arranged above the interior of the positioning sleeve, and the positioning rod is fixedly connected to the upper die base. A second partition plate is fixedly arranged on the upper side inside the positioning sleeve, and a second telescopic rod is slidably arranged in the middle of the second partition plate. A second piston disk is fixedly arranged at the bottom of the second telescopic rod, and second elastic chucks are installed on the front and rear sides of the upper surface of the second piston disk.

[0014] Further, the second compression mechanism further includes a second exhaust valve, a second intake valve, a second outlet valve, and a second ventilation main pipe. A second exhaust valve is connected and installed below one side of the positioning sleeve, a second intake valve is connected and installed above one side of the positioning sleeve, a second outlet valve is connected and installed above the other side of the positioning sleeve, and a second ventilation main pipe is connected to the front end of the second outlet valve.

[0015] Further, a flushing mechanism for air outlet flushing is arranged inside the middle of the mold body. The flushing mechanism includes a second ventilation sub-pipe, a piston chamber, a third piston disk, a lifting head, a fixing frame, an elastic valve plate, and a jet head. The upper part of the second ventilation sub-pipe is communicated with the piston chamber, and the piston chamber is arranged inside the middle of the lower die base. A third piston disk is installed in the middle inside the piston chamber, and a lifting head is arranged at the top of the third piston disk. A fixing frame is fixedly arranged below the interior of the lifting head, and an elastic valve plate is elastically installed in the middle below the fixing frame. Jet heads are installed above both sides of the surface of the lifting head. The second ventilation sub-pipe is communicated with the second ventilation main pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the jacking mechanism of the present invention, when ejecting the mold, multiple ejector plates can be gradually ejected from one side edge to the other side edge. By preferentially releasing from the edge and then quickly and gradually releasing to one side, the process of first separating the edge to break the seal and then gradually demolding can be realized, which can disperse stress, prevent the possibility of bending or even breakage of thin, fragile injection molded parts due to uneven force during synchronous jacking, and the demolding process of gradually dispersing stress can also avoid the possibility of fracture or deformation of injection molded parts with certain textures and strong post-forming fitting degrees due to one-time force, which is beneficial to improving the product yield. At the same time, the process of the ejector plate ejecting the mold is automatically completed by driving the lifting rod to move by the upper die base, thus while ensuring the processing efficiency, it also avoids the energy waste of separately setting up power equipment for cooperative demolding.

[0017] 2. Through the first compression mechanism and the inflation mechanism, when the mold is removed, the jacking plate can be automatically lifted upward by a small distance to slightly apply force to the injection molded part in advance, which is beneficial to assisting the overall demolding of the subsequent push plate. At the same time, when the connecting rod moves upward, the air outlet hole will be exposed. When continuously discharging air, the air outlet hole can inject gas under the injection molded part that has been lifted by a small distance, so that a uniform air film is formed between the template and the bottom of the injection molded part, which is beneficial to reducing the adhesion of the injection molded part and is more conducive to stable demolding, further improving the qualified rate of the product.

[0018] 3. Through the second compression mechanism and the flushing mechanism, the surface of the template can be flushed and cleaned when the mold is removed, which is beneficial to ensuring the cleanliness of the template and preventing particle impurities from falling on the surface and affecting the injection molding quality. At the same time, the final jet of the jet head is generated by the movement driven by the movement of the positioning rod, which can automatically perform flushing and cleaning when the mold is removed, and also avoids the energy waste of externally powered inflation cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic external three-dimensional structure diagram of the overall mold body of the present invention; Figure 2 is a schematic separated three-dimensional structure diagram of the mold body of the present invention; Figure 3 is a schematic three-dimensional structure diagram of the jacking mechanism of the present invention; Figure 4 is a schematic internal three-dimensional structure diagram of the connecting sleeve in cross-section of the present invention; Figure 5 is a schematic bottom three-dimensional structure diagram of the moving frame of the present invention; Figure 6 is a schematic internal three-dimensional structure diagram of the support sleeve seat in cross-section of the present invention; Figure 7 is a schematic three-dimensional structure diagram of the inflation mechanism of the present invention; Figure 8 is a schematic internal three-dimensional structure diagram of the airbag in cross-section of the present invention; Figure 9 is a schematic internal three-dimensional structure diagram of the positioning sleeve in cross-section of the present invention; Figure 10 is a schematic internal three-dimensional structure diagram of the flushing mechanism in cross-section of the present invention; Figure 11 of the present invention Figure 10 is an enlarged structure diagram at position A.

[0020] In the figure: 1. Mold body; 101. Upper mold base; 102. Lower mold base; 103. Template; 2. Jacking mechanism; 201. Connecting sleeve; 202. Lifting rod; 203. Threaded end; 204. Rotating gear disk; 205. Threaded sleeve; 206. Matching gear; 207. Fixed screw; 208. Matching sleeve; 209. Moving frame; 210. Rotating joint; 211. Rotating seat; 212. Sliding groove; 213. Sliding ejector rod; 214. Thrust plate; 3. First compression mechanism; 301. Support sleeve seat; 302. Extrusion ring; 303. First partition plate; 304. First telescopic rod; 305. First elastic chuck; 306. First piston disk; 307. Fixed sleeve; 308. First exhaust valve; 309. First intake valve; 310. First outlet valve; 311. First ventilation main pipe; 4. Inflation mechanism; 401. First ventilation sub-pipe; 402. Airbag; 403. Connecting rod; 404. Jacking plate; 405. Air outlet hole; 5. Second compression mechanism; 501. Positioning sleeve; 502. Positioning rod; 503. Second partition plate; 504. Second telescopic rod; 505. Second piston disk; 506. Second elastic chuck; 507. Second exhaust valve; 508. Second intake valve; 509. Second outlet valve; 510. Second ventilation main pipe; 6. Flushing mechanism; 601. Second ventilation sub-pipe; 602. Piston chamber; 603. Third piston disk; 604. Lifting head; 605. Fixed frame; 606. Elastic valve plate; 607. Jet head. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In order to solve the technical problems that synchronous ejection from the mold is likely to cause uneven stress on thin, fragile injection molded parts, resulting in bending or even breakage, and it is also likely to cause fracture or deformation of injection molded parts with certain textures and strong post-forming fitting degrees, as Figures 1 - 5 shown, the following preferred technical solutions are provided: A plastic toy injection mold includes a mold body 1 and a jacking mechanism 2 provided on both sides below the mold body 1. The mold body 1 includes an upper mold base 101 provided on the upper side of the mold body 1. Opposite sides below the upper mold base 101 are provided with a lower mold base 102, and a template 103 is provided on the upper surface of the lower mold base 102.

[0023] The lifting mechanism 2 includes connecting sleeves 201 arranged on both sides of the lower die base 102. Above the inside of the connecting sleeves 201, there are lifting rods 202, and a threaded end 203 is fixed below the lifting rods 202. In the middle of the inner side of the connecting sleeves 201, there is a rotating gear disk 204, and a threaded sleeve 205 passes through the middle of the rotating gear disk 204. On the upper side of one side of the rotating gear disk 204, there is an engaging gear 206, and a fixed screw rod 207 is fixed at one end of the engaging gear 206.

[0024] On the outer side of the fixed screw rod 207, there is a mating sleeve 208, and a moving frame 209 is fixed at the front end of the mating sleeve 208. On the front surface of the moving frame 209, there is a rotating joint 210, and a rotating seat 211 is arranged in the middle of the rotating joint 210. On the rear side below the rotating joint 210, there is a sliding groove 212, and a sliding top rod 213 is installed at the upper end of the rotating joint 210. A top push plate 214 is installed at the top end of the sliding top rod 213.

[0025] The lifting rods 202 penetrate through the connecting sleeves 201, and the lifting rods 202 are fixed below both sides of the upper die base 101. The threaded end 203 is threadedly connected to the inner wall of the threaded sleeve 205, and the rotating gear disk 204 is rotatably connected to the connecting sleeve 201.

[0026] The fixed screw rod 207 is threadedly connected to the inner wall of the mating sleeve 208, and two groups of moving frames 209 are arranged before and after with respect to the mating sleeve 208. The rotating seat 211 is fixedly connected to the lower die base 102, and the rotating joint 210 is rotatably connected to the rotating seat 211. The front end of the rotating joint 210 is rotatably connected to the bottom end of the sliding top rod 213, and the sliding top rod 213 is slidably connected to the lower die base 102. Four sliding grooves 212 are formed on the surface of each group of moving frames 209, and the lengths of the four sliding grooves 212 gradually shorten from left to right, and the length of the leftmost sliding groove 212 in the first group is greater than the length of the leftmost sliding groove 212 in the second group.

[0027] By sliding the ejector rod 213 and the push plate 214, when the upper die holder 101 is separated from the lower die holder 102, the push plate 214 is in a state of ejecting the template 103. When the upper die holder 101 and the lower die holder 102 are closed for injection molding, the lifting rod 202 is driven by the upper die holder 101 to move downward and extend into the connecting sleeve 201. At this time, the threaded end 203 and the threaded sleeve 205 will be threadedly engaged. When the lifting rod 202 drives the threaded end 203 to move downward, it will cause the threaded sleeve 205 and the rotating gear disk 204 to rotate radially within the connecting sleeve 201. The rotation of the rotating gear disk 204 will drive the mating gear 206 and the fixed screw 207 to rotate together. When the fixed screw 207 rotates, the mating sleeve 208 threadedly connected thereto will, under the action of the limit slide frame fixed to the lower die holder 102 below the moving frame 209, cause the mating sleeve 208 to drive the moving frame 209 to move toward the connecting sleeve 201 side. When the moving frame 209 moves, the sliding ejector rod 213 is driven by the pulling of the rotating joint 210 to drive the push plate 214 to move downward. When the mold is fully closed, the push plate 214 in the jacking state will move downward to be flush with the lower surface of the template 103.

[0028] After the injection molding is completed, the upper die holder 101 moves upward to eject the mold. At this time, the threaded end 203 passes through the threaded sleeve 205, which will drive the rotating gear disk 204 to rotate in the reverse direction, and finally cause the sliding ejector rod 213 to drive the push plate 214 to move upward to jack up, so as to eject the injection molded part after forming and cooling out of the mold. Since there are four sets of sliding ejector rods 213 and push plates 214 provided on each of the front and rear two sets of moving frames 209, and the lengths of the four sliding grooves 212 opened on the surface of the first set of moving frames 209 gradually decrease from left to right, and the length of the leftmost sliding groove 212 of the first set is greater than the length of the leftmost sliding groove 212 of the second set, the eight sliding grooves 212 on the surfaces of the two sets of moving frames 209 gradually decrease in turn. Therefore, when the moving frame 209 moves, due to the sliding of the sliding groove 212, after the rotating joint 210 slides a corresponding distance, it will rotate to drive the sliding ejector rod 213 and the push plate 214 to move, and the push plate 214 of the set with the shortest sliding groove 212 moves in turn to the push plate 214 of the set with the longest sliding groove 212. Therefore, when ejecting the mold, the multiple push plates 214 are gradually ejected from one side edge to the other side edge. By releasing the edge first and then quickly and gradually releasing to one side, the process of separating the edge first to break the seal and then gradually demolding can be realized, which can disperse the stress, prevent the possibility of bending or even breakage of the thin and fragile injection molded parts due to uneven force during synchronous pushing, and the demolding of gradually dispersing the stress can also avoid the possibility of fracture or deformation of the injection molded parts with certain texture and strong post-forming fitting degree due to being stressed at one time. At the same time, the process of the push plate 214 ejecting the mold is automatically completed by the upper die holder 101 driving the lifting rod 202 to move, thus while ensuring the processing efficiency, it also avoids the energy waste of separately setting up power equipment for cooperating with demolding.

[0029] In order to solve the technical problem that the injection molded parts are relatively tightly fitted and are easily damaged by the adsorption force during demolding, thereby affecting the yield of the finished product, as Figures 1 - 3 well as Figures 6 - 8 shown, the following preferred technical solutions are provided: A first compression mechanism 3 is arranged inside the lower part of the jacking mechanism 2, and the first compression mechanism 3 includes a support sleeve seat 301 fixed to the bottom of the connecting sleeve 201. An extrusion ring 302 is fixed to the outer side of the upper end inside the support sleeve seat 301, and a first partition plate 303 is fixed to the middle part inside the support sleeve seat 301. A first telescopic rod 304 is slidably arranged in the middle of the first partition plate 303, and first elastic chucks 305 are installed on the front and rear sides of the upper surface of the first telescopic rod 304. A first piston disc 306 is fixed to the bottom of the first telescopic rod 304, and a fixed sleeve 307 is arranged above the first telescopic rod 304. The fixed sleeve 307 is fixed to the bottom of the threaded end 203.

[0030] A first exhaust valve 308 is connected and installed below one side of the support sleeve seat 301, a first intake valve 309 is connected and installed in the middle of one side of the support sleeve seat 301, a first outlet valve 310 is connected and installed in the middle of the other side of the support sleeve seat 301, and the front end of the first outlet valve 310 is connected to a first ventilation main pipe 311.

[0031] An inflation mechanism 4 is arranged inside the top of the jacking mechanism 2. The inflation mechanism 4 includes a first ventilation sub-pipe 401 connected below the top push plate 214. A gasbag 402 is connected and arranged in the middle above the first ventilation sub-pipe 401, and a connecting rod 403 is connected and arranged in the middle above the gasbag 402. A jacking disc 404 is fixed to the top, and air outlet holes 405 are formed on both sides of the middle of the surface of the connecting rod 403. The first ventilation sub-pipe 401 is communicated with the first ventilation main pipe 311. The base material of the gasbag 402 is made of perfluoroether rubber material, which can withstand temperatures above 330 °C, while the normal injection molding temperature range is 180 - 320 °C, so that the gasbag 402 is not affected by the injection molding temperature.

[0032] Through the fixed sleeve 307, when the mold is closed with the threaded end 203 moving downward, it will be sleeved with the first telescopic rod 304, so that the retractable first elastic chuck 305 is clamped with the clamping hole opened on the surface of the fixed sleeve 307. When the threaded end 203 continues to move downward to close the mold, the fixed sleeve 307 presses the first telescopic rod 304 and the first piston disk 306 to move downward. At this time, the air below the first piston disk 306 is pressed down and discharged by the first exhaust valve 308. As the first piston disk 306 moves downward, the space from its upper side to the first partition plate 303 continuously increases. At this time, the one-way first intake valve 309 and the two-way first outlet valve 310 are used to suck air into the space between the first piston disk 306 and the first partition plate 303. At the same time, the air passage of the first intake valve 309 is smaller than that of the first outlet valve 310 to ensure the priority ventilation of the first outlet valve 310.

[0033] At this time, the first outlet valve 310 inhales air from the air outlet hole 405 through the ventilation of the first ventilation main pipe 311, the first ventilation sub-pipe 401, the airbag 402 and the connecting rod 403. The airbag 402 is made of elastic and shrinkable material. When inhaling air, it will drive the connecting rod 403 and the jacking disk 404 to retract downward by its own rebound and air pressure. Thus, when the first piston disk 306 moves downward to close the mold, the jacking disk 404 retracts to be flush with the surface of the top push plate 214. On the contrary, when the fixed sleeve 307 moves upward during mold withdrawal, at this time, due to the clamping of the first elastic chuck 305, the fixed sleeve 307 will drive the first telescopic rod 304 to move upward together. Thus, the space below the first piston disk 306 inhales air through the first exhaust valve 308, and the space above is compressed. The gas is filled into the airbag 402 through the conduction of the first outlet valve 310, the first ventilation main pipe 311 and the first ventilation sub-pipe 401. Continuous inflation causes the airbag 402 to expand and move upward, pushing up the connecting rod 403 and the jacking disk 404. When the first elastic chuck 305 moves to the extrusion ring 302, it is compressed, enabling the fixed sleeve 307 to separate from the first telescopic rod 304. The stroke of the connecting rod 403 is short, so that when the jacking disk 404 moves upward, it can push the injection molded part up a small distance, applying a slight force to the injection molded part in advance, which is beneficial to assisting the overall demolding of the subsequent top push plate 214. At the same time, when the connecting rod 403 moves upward, the air outlet hole 405 will be exposed. When continuously discharging air, the air outlet hole 405 can inject gas under the injection molded part that has been pushed up a small distance, so that the gas forms a uniform air film between the template 103 and the bottom of the injection molded part, which is beneficial to reducing the adhesion of the injection molded part and is more conducive to stable demolding, further improving the qualified rate of the product.

[0034] To solve the technical problems that during continuous injection molding, it is easily interfered by impurities and dust particles, affecting the product quality, and the additional equipment flushing will cause a certain amount of energy consumption, such as Figure 1 、 Figure 2 and Figures 9 - 11As shown in the figure, the following preferred technical solutions are provided: A second compression mechanism 5 is arranged at the rear side of the jacking mechanism 2. The second compression mechanism 5 includes a positioning sleeve 501 arranged at the rear side of the support sleeve base 301. A positioning rod 502 is slidably arranged above the interior of the positioning sleeve 501, and the positioning rod 502 is fixedly connected to the upper die base 101. A second partition plate 503 is fixedly arranged on the upper side inside the positioning sleeve 501, and a second telescopic rod 504 is slidably arranged in the middle of the second partition plate 503. The bottom of the second telescopic rod 504 is fixedly provided with a second piston disc 505, and second elastic chucks 506 are installed on the front and rear sides of the upper surface of the second piston disc 505.

[0035] A second exhaust valve 507 is connected and installed below one side of the positioning sleeve 501, and a second intake valve 508 is connected and installed above one side of the positioning sleeve 501. A second outlet valve 509 is connected and installed above the other side of the positioning sleeve 501, and the front end of the second outlet valve 509 is connected with a second ventilation main pipe 510.

[0036] A flushing mechanism 6 is arranged inside the middle of the mold body 1. The flushing mechanism 6 includes a second ventilation sub-pipe 601 connected below the lower die base 102. A piston chamber 602 is communicated above the second ventilation sub-pipe 601, and the piston chamber 602 is arranged inside the middle of the lower die base 102. A third piston disc 603 is installed in the middle inside the piston chamber 602, and a lifting head 604 is arranged at the top of the third piston disc 603. A fixing frame 605 is fixedly arranged below the interior of the lifting head 604, and an elastic valve plate 606 is elastically installed in the middle below the fixing frame 605. Jet heads 607 are installed above both sides of the surface of the lifting head 604. The second ventilation sub-pipe 601 is communicated with the second ventilation main pipe 510. Through the second compression mechanism 5 and the flushing mechanism 6, the surface of the template 103 can be automatically flushed.

[0037] The principle of the second compression mechanism 5 is the same as that of the first compression mechanism 3. When the positioning rod 502 extends into the positioning sleeve 501 during mold closing, a structure similar to the fixed sleeve 307 is provided below the positioning rod 502, which can be sleeved and engaged with the second telescopic rod 504 and the second elastic chuck 506 during downward movement, causing the second piston disk 505 to move downward for compression. At this time, the second exhaust valve 507 exhausts air, and the one-way second intake valve 508 inhales air. When the second piston disk 505 moves upward during mold opening, the gas inhaled between the second partition plate 503 and the second piston disk 505 will rush into the piston chamber 602 through the second air outlet valve 509, the second main air pipe 510, and the second auxiliary air pipe 601. The air pressure in the piston chamber 602 causes the third piston disk 603 with a spring below to drive the lifting head 604 to lift, so that the jet head 607 is exposed in the middle of the surface of the template 103. When the positioning rod 502 moves upward to the reduced diameter part at the top of the positioning sleeve 501, the inner wall on the upper side of the positioning sleeve 501 squeezes the second elastic chuck 506 to retract, enabling the second telescopic rod 504 to separate from the positioning rod 502. When continuously inflating, the elastic valve plate 606 is compressed and moves upward, exposing the air hole opened in the middle of the surface of the third piston disk 603. At this time, the continuously flowing air will finally be sprayed from the jet head 607 onto the surface of the template 103, thereby being able to wash and clean the surface of the template 103, which is beneficial to ensuring the cleanliness of the template 103, preventing particulate impurities from falling on the surface and affecting the quality of injection molding. At the same time, the final jet of the jet head 607 is generated by the movement driven by the movement of the positioning rod 502, which can automatically perform washing and cleaning during mold opening and also avoid the energy waste of externally powered inflation cleaning.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic toy injection mold, comprising a mold body (1) and a jacking mechanism (2), characterized in that: The jacking mechanism (2) for gradient demolding is arranged on both sides below the mold body (1). The jacking mechanism (2) includes a connecting sleeve (201), a lifting rod (202), a threaded end (203), a rotating gear disk (204), a threaded sleeve (205), a mating gear (206), and a fixing screw (207). Above the inner part of the connecting sleeve (201), a lifting rod (202) is arranged, and a threaded end (203) is fixed below the lifting rod (202). In the middle of the inner side of the connecting sleeve (201), a rotating gear disk (204) is installed, and a threaded sleeve (205) passes through the middle of the rotating gear disk (204). On the upper side of one side of the rotating gear disk (204), a mating gear (206) is engaged, and a fixing screw (207) is fixed at one end of the mating gear (206); On the outer side of the fixing screw (207), a mating sleeve (208) is arranged, and a moving frame (209) is fixed at the front end of the mating sleeve (208). On the front surface of the moving frame (209), a rotating joint (210) is installed, and a rotating seat (211) is arranged in the middle of the rotating joint (210). On the rear side below the rotating joint (210), a sliding groove (212) is arranged, and a sliding ejector rod (213) is installed at the upper end of the rotating joint (210). At the top of the sliding ejector rod (213), a pushing plate (214) is installed.

2. The plastic toy injection mold according to claim 1, wherein: The mold body (1) includes an upper mold base (101), a lower mold base (102), and a template (103). Opposite sides below the upper mold base (101) are provided with a lower mold base (102), and a template (103) is arranged on the upper surface of the lower mold base (102).

3. The injection mold for plastic toys according to claim 2, characterized in that: The lifting rod (202) is in through connection with the connecting sleeve (201), and the lifting rod (202) is fixed below both sides of the upper mold base (101). The threaded end (203) is in threaded connection with the inner wall of the threaded sleeve (205), and the rotating gear disk (204) is rotatably connected with the connecting sleeve (201).

4. A plastic toy injection mold according to claim 2, characterized in that: The fixing screw (207) is in threaded connection with the inner wall of the mating sleeve (208), and two groups of moving frames (209) are arranged before and after with respect to the mating sleeve (208). The rotating seat (211) is fixedly connected with the lower mold base (102), and the rotating joint (210) is rotatably connected with the rotating seat (211). The front end of the rotating joint (210) is rotatably connected with the bottom end of the sliding ejector rod (213), and the sliding ejector rod (213) is slidably connected with the lower mold base (102). On the surface of each group of moving frames (209), four sliding grooves (212) are formed, and the lengths of the four sliding grooves (212) gradually shorten from left to right, and the length of the leftmost sliding groove (212) in the first group is greater than the length of the leftmost sliding groove (212) in the second group.

5. A plastic toy injection mold according to claim 1, characterized in that: Inside the lower part of the lifting mechanism (2), there is a first compression mechanism (3) for lifting and gas production. The first compression mechanism (3) includes a support sleeve base (301), a pressing ring (302), a first partition plate (303), a first telescopic rod (304), a first elastic chuck (305), a first piston disc (306) and a fixing sleeve (307). On the outer side of the upper end inside the support sleeve base (301), a pressing ring (302) is fixed. In the middle of the inner side of the support sleeve base (301), a first partition plate (303) is fixed. In the middle of the first partition plate (303), a first telescopic rod (304) is slidably arranged. On the front and rear sides of the upper surface of the first telescopic rod (304), first elastic chucks (305) are installed. At the bottom of the first telescopic rod (304), a first piston disc (306) is fixed. Above the first telescopic rod (304), there is a fixing sleeve (307). The fixing sleeve (307) is fixed at the bottom of the threaded end (203).

6. A plastic toy injection mold according to claim 5, characterized in that: The first compression mechanism (3) further includes a first exhaust valve (308), a first intake valve (309), a first outlet valve (310) and a first main ventilation pipe (311). At the lower side of one side of the support sleeve base (301), a first exhaust valve (308) is connected and installed. At the middle of one side of the support sleeve base (301), a first intake valve (309) is connected and installed. At the middle of the other side of the support sleeve base (301), a first outlet valve (310) is connected and installed. At the front end of the first outlet valve (310), a first main ventilation pipe (311) is connected.

7. A plastic toy injection mold according to claim 6, characterized in that: Inside the top of the lifting mechanism (2), there is an inflation mechanism (4) for assisting in pushing. The inflation mechanism (4) includes a first auxiliary ventilation pipe (401), an airbag (402), a connecting rod (403), a lifting disc (404) and air outlet holes (405). In the middle of the upper part of the first auxiliary ventilation pipe (401), an airbag (402) is connected and arranged. In the middle of the upper part of the airbag (402), a connecting rod (403) is connected and arranged. At the top, a lifting disc (404) is fixed. On both sides of the middle of the surface of the connecting rod (403), air outlet holes (405) are opened. The first auxiliary ventilation pipe (401) is communicated with the first main ventilation pipe (311).

8. A plastic toy injection mold according to claim 2, wherein: A second compression mechanism (5) for positioning is provided at the rear side of the lifting mechanism (2). The second compression mechanism (5) includes a positioning sleeve (501), a positioning rod (502), a second partition plate (503), a second telescopic rod (504), a second piston disc (505) and a second elastic chuck (506). The positioning rod (502) is slidably arranged above the inside of the positioning sleeve (501), and the positioning rod (502) is fixedly connected to the upper die base (101). The second partition plate (503) is fixedly arranged on the upper side inside the positioning sleeve (501), and the second telescopic rod (504) is slidably arranged in the middle of the second partition plate (503). The bottom of the second telescopic rod (504) is fixedly provided with the second piston disc (505), and the second elastic chucks (506) are installed on the front and rear sides of the upper surface of the second piston disc (505).

9. A plastic toy injection mold according to claim 8, characterized in that: The second compression mechanism (5) further includes a second exhaust valve (507), a second intake valve (508), a second outlet valve (509) and a second ventilation main pipe (510). The second exhaust valve (507) is connected and installed below one side of the positioning sleeve (501), and the second intake valve (508) is connected and installed above one side of the positioning sleeve (501). The second outlet valve (509) is connected and installed above the other side of the positioning sleeve (501), and the front end of the second outlet valve (509) is connected with the second ventilation main pipe (510).

10. A plastic toy injection mold according to claim 9, characterized in that: A flushing mechanism (6) for air outlet flushing is arranged inside the middle of the die body (1). The flushing mechanism (6) includes a second ventilation sub-pipe (601), a piston chamber (602), a third piston disc (603), a lifting head (604), a fixing frame (605), an elastic valve plate (606) and a jet head (607). The piston chamber (602) is connected and communicated above the second ventilation sub-pipe (601), and the piston chamber (602) is arranged inside the middle of the lower die base (102). The third piston disc (603) is installed in the middle inside the piston chamber (602), and the lifting head (604) is arranged on the top of the third piston disc (603). The fixing frame (605) is fixedly arranged below the inside of the lifting head (604), and the elastic valve plate (606) is elastically installed in the middle below the fixing frame (605). The jet heads (607) are installed above both sides of the surface of the lifting head (604). The second ventilation sub-pipe (601) is communicated with the second ventilation main pipe (510).

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