Automatic demolding mechanism and method for toy plastic mold

Abstract

The invention discloses a toy plastic mold automatic demolding mechanism and method, and belongs to the technical field of plastic injection molding.The toy plastic mold automatic demolding mechanism comprises a main body unit, a vibration mechanism and a smearing mechanism, the main body unit comprises a lower mold and an upper mold matched with the lower mold, and a lower injection molding cavity and an upper injection molding cavity are formed in the lower mold and the upper mold correspondingly; the mold has the beneficial effects that the upper mold drives the toothed plate to move upwards, the toothed plate is matched with the driving gear to drive the annular gear to rotate, the annular gear and the pawl drive the ratchet wheel to rotate, and the ratchet wheel, the rotating rod, the rotating disc, the connecting rod and the push rod are arranged to drive the piston push plate to move left and right; the knocking block is driven by the piston push plate to repeatedly strike the lower mold, so that the lower mold vibrates and an injection molding part is separated from the inner wall of the mold, scratches or damages on the surface of the injection molding part during ejection are avoided, the overall quality of a product is improved, and the defective rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic injection molding, and in particular to an automatic demoulding mechanism and method for a toy plastic mold. Background Art

[0002] Plastic injection molding is a process in which granular or powdered plastic raw materials are added to the hopper of the injection molding machine. The raw materials are plasticized into a melt in the barrel through external heating and the rotary shearing action of the screw. Subsequently, the melt is injected into a mold cavity with a certain shape by applying a certain pressure. After cooling and shaping, the mold is opened to take out the product.

[0003] Although current plastic injection molding machines are equipped with ejector mechanisms to achieve an automated demoulding process, when processing certain small plastic toy injection molded parts, especially those cylindrical parts that fit tightly with the mold cavity, they may adhere to the mold cavity after injection molding. Directly using the ejector mechanism for ejection operations may cause scratches or damage to the surface of the injection molded parts, thereby reducing the overall quality of the product and increasing the defective rate.

[0004] Therefore, a toy plastic mold automatic demoulding mechanism and method thereof are needed to solve the above problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned problems of the automatic demoulding mechanism and method for toy plastic mold, the present invention is proposed.

[0007] Therefore, the purpose of the present invention is to provide an automatic demolding mechanism and method for toy plastic molds, which are used to solve the problem that "although the current plastic injection molding machines are equipped with ejector mechanisms to realize an automated demolding process, when processing certain small plastic toy injection molded parts, especially those columnar parts that fit tightly with the mold cavity, they may adhere to the mold cavity after injection molding. Directly using the ejector mechanism for ejection operation may cause scratches or damage to the surface of the injection molded parts, thereby reducing the overall quality of the product and increasing the defective rate."

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic demoulding mechanism for a toy plastic mold, comprising: A main body unit, the main body unit comprises a lower mold and an upper mold matched therewith, a lower injection cavity and an upper injection cavity are respectively provided in the lower mold and the upper mold, two grooves are symmetrically provided at the upper end of the lower mold, a fixed groove is provided in each of the grooves, an extrusion cavity is provided in each of the fixed grooves, two high-pressure cavities and two liquid storage cavities are symmetrically provided in the lower mold, two air inlet holes are provided on the side wall of the lower mold and are connected to the extrusion cavity, each of the extrusion cavity is connected to the high-pressure cavity through the air injection hole, each of the high-pressure cavity is connected to the liquid storage cavity through a connecting pipe, one side of each of the liquid storage cavities is fixedly connected to an air outlet pipe, the other end of each of the air outlet pipes is fixedly connected to a nozzle, two high-speed water mist nozzles are symmetrically fixedly connected to the opposite side of each of the nozzles, each of the high-speed water mist nozzles is arranged at an angle of 45 degrees, and a cavity is provided in the lower mold; A vibration mechanism, wherein the vibration mechanism is arranged in two groups, each group of the vibration mechanisms comprises a tooth plate, each of the tooth plates is fixedly connected to the lower end of the upper mold, one side of each of the tooth plates is meshedly connected to a driving gear, one side of each of the driving gears is meshedly connected to a ring gear, the front side of each of the ring gears is fixedly connected to a rotating shaft, each of the rotating shafts is rotatably sleeved with a pawl, each of the rotating shafts is sleeved with a torsion spring, and both ends of each torsion spring are respectively fixedly connected to the side walls of the rotating shaft and the pawl, each group of the vibration mechanisms also comprises a ratchet, each of the ratchet wheels is meshedly connected with the pawl, a rotating rod is fixedly inserted at the center of each of the ratchet wheels, one end of each of the rotating rods is fixedly connected to a rotating disk, the front side of each of the rotating disks is rotatably connected to a connecting block, the side wall of each of the connecting blocks is fixedly connected to a connecting rod, the other end of each of the connecting rods is rotatably connected to a push rod, the other end of each of the push rods is rotatably connected to a piston push plate, and the other side of each of the piston push plates is evenly spaced and fixedly connected to a plurality of knocking blocks; The smearing mechanism comprises an electric telescopic rod, which is fixedly connected in the cavity, the telescopic end of the electric telescopic rod passes through the cavity and is fixedly connected to a disc, a sleeve groove is provided on the side wall of the disc, a fixing ring is rotatably sleeved in the sleeve groove, an annular PE foam is fixedly sleeved on the fixing ring, a plurality of arc-shaped foam sheets are fixedly connected at equal intervals on the side wall of the annular PE foam, and a piston top plate is fixedly connected to the upper end of the disc.

[0009] As a preferred solution of the automatic demoulding mechanism of a toy plastic mold described in the present invention, the upper injection cavity and the lower injection cavity are both arranged in a columnar shape, a spraying groove is provided in the lower injection cavity, the diameters of the piston top plate and the annular PE foam are the same as the diameter of the lower injection cavity, and a plurality of the arc-shaped foam sheets are connected end to end and arranged in a ring shape.

[0010] As a preferred solution of the automatic demoulding mechanism of a toy plastic mold described in the present invention, wherein: an air intake check valve and an exhaust check valve are fixedly installed in each of the multiple air inlet holes and the multiple air injection holes, a No. 1 pressure valve is fixedly installed in each of the multiple connecting pipes, a No. 2 pressure valve is fixedly installed in the air outlet pipe, and the safety pressure value of the No. 1 pressure valve is greater than the safety pressure value of the No. 2 pressure valve.

[0011] As a preferred solution of the automatic demoulding mechanism for a toy plastic mold described in the present invention, wherein: multiple fixed grooves are provided with annular T-shaped grooves, one side of multiple ring gears is symmetrically fixedly connected with two No. 2 support rods, the other end of each No. 2 support rod is fixedly connected to a limiting block, and each of the limiting blocks is slidably connected in the annular T-shaped groove.

[0012] As a preferred solution of the automatic demoulding mechanism for a toy plastic mold described in the present invention, a No. 1 support rod is fixedly inserted at the center of each of the plurality of driving gears, and both ends of each of the No. 1 support rods are rotatably connected to the inner wall of the fixed groove.

[0013] As a preferred solution of the automatic demoulding mechanism for toy plastic molds described in the present invention, one end of each of the rotating rods is rotatably connected to the inner wall of the fixing groove, and each of the piston push plates is slidably connected to the inner wall of the extrusion cavity.

[0014] As a preferred solution of the automatic demoulding mechanism for a toy plastic mold described in the present invention, electric heating plates are fixedly installed on the inner walls of the multiple liquid storage chambers, two liquid adding tubes are symmetrically fixedly connected to the side wall of the lower mold and are respectively connected to the liquid storage chambers, and the other end of each of the liquid adding tubes is meshedly connected to a sealing cover.

[0015] As a preferred solution of the automatic demoulding mechanism of a toy plastic mold described in the present invention, the disc is arranged in a spray tank, the piston top plate is slidably connected to the inner wall of the lower injection cavity, the telescopic end of the electric telescopic rod is slidably connected to the inner wall of the lower mold, and the material of each of the fixing rings is set to be a carbon fiber composite material, and the surface is relatively smooth.

[0016] As a preferred solution of the automatic demoulding mechanism of a toy plastic mold described in the present invention, wherein: two hydraulic telescopic rods are symmetrically fixedly connected to the upper end of the upper mold, a liquid injection tube is fixedly embedded in the upper mold and is connected to the upper injection cavity, a plurality of circulating water pipes are opened in the lower mold, and a plurality of cooling water inlets and cooling water outlets are symmetrically fixedly connected at equal intervals on the side wall of the lower mold, and are respectively connected to the circulating water pipe.

[0017] The present invention further provides a method for using the automatic demoulding mechanism for a toy plastic mold, which uses the automatic demoulding mechanism for a toy plastic mold, and comprises the following steps: S1, during injection molding, the upper mold is driven downward by the hydraulic telescopic rod to fit with the lower mold, the injection liquid is injected through the injection pipe, and then water circulation cooling is achieved through the cooling water inlet, circulating water pipeline and cooling water outlet to form the injection molded part; S2, the upper mold is driven to move upward and separate from the lower mold through the hydraulic telescopic rod. In this process, the tooth plate is driven upward by the upper mold, and the ring gear is driven to rotate through the cooperation with the driving gear, and the ratchet is driven to rotate through the ring gear and the pawl. The piston push plate is driven to move left and right through the arrangement of the ratchet, the rotating rod, the turntable, the connecting rod and the push rod, and the knocking block is driven by the piston push plate to repeatedly hit the lower mold, so that the lower mold vibrates and the injection molded part is separated from the inner wall of the mold; In S3 and S2, the piston push plate will inhale air through the air inlet hole for many times while moving left and right, and inject it into the high-pressure chamber through the air injection hole. When the air pressure in the high-pressure chamber is greater than the safety value of the No. 1 pressure valve, the No. 1 pressure valve opens, and the high-pressure gas enters the liquid storage chamber through the connecting pipe, and then is discharged into the nozzle through the air outlet pipe. The high-pressure gas mixed with the release agent is sprayed out through the high-speed water mist nozzle, and the high-speed gas sprayed on the annular PE foam will drive the fixed ring to rotate, and at the same time, the release agent is evenly sprayed on the annular PE foam; S4, when the upper mold is separated from the lower mold, the electric telescopic rod drives the disc to move upward, and the injection molded part is ejected from the lower injection cavity through the disc and the piston top plate, and at the same time, the arc-shaped foam sheet is squeezed onto the annular PE foam through the lower injection cavity. At this time, the annular PE foam is squeezed so that the release agent is squeezed out and evenly applied to the lower injection cavity; S5, finally, the injection molded part is removed, and then the disc and the piston top plate are driven downward and reset by the electric telescopic rod, and the injection molding process is repeated.

[0018] Beneficial effects of the present invention: The tooth plate is driven upward by the upper mold, and the ring gear is driven to rotate by the cooperation with the driving gear, and the ratchet is driven to rotate by the ring gear and the pawl, and the piston push plate is driven to move left and right by the arrangement of the ratchet, the rotating rod, the rotating disk, the connecting rod and the push rod, and the knocking block is driven by the piston push plate to repeatedly hit the lower mold, so that the lower mold vibrates and the injection molded part is separated from the inner wall of the mold, so as to avoid scratches or damage on the surface of the injection molded part during ejection, thereby improving the overall quality of the product and reducing the defective rate; When the piston push plate moves left and right, it will inhale air through the air inlet hole for many times and inject it into the high-pressure chamber through the air injection hole. When the air pressure in the high-pressure chamber is greater than the safety value of the No. 1 pressure valve, the No. 1 pressure valve opens, and the high-pressure gas enters the liquid storage chamber through the connecting pipe, and then is discharged into the nozzle through the air outlet pipe. The high-pressure gas mixed with the release agent is sprayed out through the high-speed water mist nozzle, and the high-speed gas sprayed on the annular PE foam will drive the fixed ring to rotate, and at the same time, the release agent is evenly sprayed on the annular PE foam, and then the annular PE foam is driven upward by the electric telescopic rod to evenly apply the release agent on the inner wall of the lower injection cavity to avoid adhesion between the injection molded parts and the injection cavity, and further avoid scratches and damage on the surface of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The present invention is a schematic diagram of the front three-dimensional structure of an automatic demoulding mechanism for a toy plastic mold.

[0020] Figure 2 The present invention is a front cross-sectional structural schematic diagram of an automatic demoulding mechanism for a toy plastic mold.

[0021] Figure 3 The present invention is a schematic cross-sectional structural diagram of a main unit in an automatic demoulding mechanism for a toy plastic mold.

[0022] Figure 4 The present invention is a partial cross-sectional structural schematic diagram of an automatic demoulding mechanism for a toy plastic mold.

[0023] Figure 5 The present invention is a schematic structural diagram of a vibration mechanism in an automatic demoulding mechanism for a toy plastic mold.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Figure 7 The present invention is a schematic structural diagram of a fixing ring in an automatic demoulding mechanism for a toy plastic mold.

[0026] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0027] Fig. 9 The present invention is a structural schematic diagram of a coating mechanism in an automatic demoulding mechanism for a toy plastic mold.

[0028] Description of the drawings: 100, main unit; 101, lower mold; 1011, groove; 1012, fixing groove; 1013, extrusion chamber; 1014, high-pressure chamber; 1015, liquid storage chamber; 1016, annular T-slot; 102, upper mold; 103, hydraulic telescopic rod; 104, injection pipe; 105, cooling water inlet; 106, connecting pipe; 107, electric heating plate; 108, air outlet pipe; 109, nozzle; 109a, high-speed water mist nozzle; 200, vibration mechanism; 201, tooth plate; 202, driving gear; 202a, No. 1 Support rod; 203, ring gear; 203a, support rod No. 2; 203b, limit block; 204, rotating shaft; 205, pawl; 206, torsion spring; 207, ratchet; 208, rotating rod; 209, turntable; 210, connecting block; 211, connecting rod; 212, push rod; 213, piston push plate; 214, knocking block; 300, coating mechanism; 301, electric telescopic rod; 302, disc; 302a, socket groove; 303, piston top plate; 304, fixing ring; 305, annular PE foam; 306, arc-shaped foam sheet. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Embodiment 1

[0033] Reference Figure 1-Figure 9 , as one embodiment of the present invention, provides a toy plastic mold automatic demoulding mechanism, which includes: The main body unit 100 includes a lower mold 101 and an upper mold 102 matched therewith. The lower mold 101 and the upper mold 102 are respectively provided with a lower injection cavity and an upper injection cavity. The upper end of the lower mold 101 is symmetrically provided with two grooves 1011, each groove 1011 is provided with a fixing groove 1012, each fixing groove 1012 is provided with an extrusion cavity 1013, and the lower mold 101 is symmetrically provided with two high-pressure cavities 1014 and two liquid storage cavities 1015. The side wall of the lower mold 101 is provided with two air inlet holes and connected with the extrusion cavity 1013. The pressure chambers 1013 are connected, each of the extrusion chambers 1013 is connected to the high-pressure chamber 1014 through the air injection hole, each of the high-pressure chambers 1014 is connected to the liquid storage chamber 1015 through the connecting pipe 106, one side of each liquid storage chamber 1015 is fixedly connected to an air outlet pipe 108, the other end of each air outlet pipe 108 is fixedly connected to a nozzle 109, and the opposite side of each nozzle 109 is symmetrically fixedly connected to two high-speed water mist nozzles 109a, each high-speed water mist nozzle 109a is set at an angle of 45 degrees, and a cavity is opened in the lower mold 101; During injection molding, the upper mold 102 is driven downward by the hydraulic telescopic rod 103 to fit with the lower mold 101, and the injection liquid is injected through the injection pipe 104. Then, water circulation cooling is achieved through the cooling water inlet 105, the circulating water pipeline and the cooling water outlet to form the injection molded part.

[0034] Vibration mechanism 200, the vibration mechanism 200 is set in two groups, each group of vibration mechanism 200 includes a tooth plate 201, each tooth plate 201 is fixedly connected to the lower end of the upper mold 102, one side of each tooth plate 201 is meshedly connected with a driving gear 202, one side of each driving gear 202 is meshedly connected with a ring gear 203, the front side of each ring gear 203 is fixedly connected with a rotating shaft 204, each rotating shaft 204 is rotatably sleeved with a pawl 205, each rotating shaft 204 is sleeved with a torsion spring 206, both ends of each torsion spring 206 are respectively fixedly connected to the side walls of the rotating shaft 204 and the pawl 205, each The group vibration mechanism 200 also includes ratchets 207, each of which is meshed with the pawl 205, a rotating rod 208 is fixedly inserted at the center of each ratchet 207, one end of each rotating rod 208 is fixedly connected to a rotating disk 209, the front side of each rotating disk 209 is rotatably connected to a connecting block 210, a connecting rod 211 is fixedly connected to the side wall of each connecting block 210, the other end of each connecting rod 211 is rotatably connected to a push rod 212, the other end of each push rod 212 is rotatably connected to a piston push plate 213, and the other side of each piston push plate 213 is fixedly connected to a plurality of knocking blocks 214 at equal intervals; Among them, the tooth plate 201 is driven to move upward by the upper mold 102, and the ring gear 203 is driven to rotate by cooperating with the driving gear 202, and the ratchet 207 is driven to rotate by the ring gear 203 and the pawl 205. The piston push plate 213 is driven to move left and right by the arrangement of the ratchet 207, the rotating rod 208, the turntable 209, the connecting rod 211 and the push rod 212. The knocking block 214 is driven by the piston push plate 213 to repeatedly hit the lower mold 101, so that the lower mold 101 vibrates and the injection molded part is separated from the inner wall of the mold, so as to avoid scratches or damage on the surface of the injection molded part during ejection, thereby improving the overall quality of the product and reducing the defective rate.

[0035] The smearing mechanism 300 includes an electric telescopic rod 301, which is fixedly connected in the cavity. The telescopic end of the electric telescopic rod 301 passes through the cavity and is fixedly connected to a disc 302. A sleeve groove 302a is provided on the side wall of the disc 302. A fixing ring 304 is rotatably sleeved in the sleeve groove 302a. An annular PE foam 305 is fixedly sleeved on the fixing ring 304. A plurality of arc-shaped foam sheets 306 are fixedly connected at equal intervals on the side wall of the annular PE foam 305. The upper end of the disc 302 is fixedly connected to a piston top plate 303.

[0036] Among them, when the piston push plate 213 moves left and right, it will inhale air through the air inlet hole many times and inject it into the high-pressure chamber 1014 through the air injection hole. When the air pressure in the high-pressure chamber 1014 is greater than the safety value of the No. 1 pressure valve, the No. 1 pressure valve opens, and the high-pressure gas enters the liquid storage chamber 1015 through the connecting pipe 106, and then is discharged into the nozzle 109 through the air outlet pipe 108. The high-pressure gas mixed with the release agent is sprayed out through the high-speed water mist nozzle 109a, and the high-speed gas is sprayed on the annular PE foam 305, which will drive the fixed ring 304 to rotate, and at the same time, the release agent is evenly sprayed on the annular PE foam 305, and then the annular PE foam 305 is driven upward by the electric telescopic rod 301 to evenly apply the release agent on the inner wall of the lower injection molding cavity to avoid adhesion between the injection molded part and the injection molding cavity, and further avoid scratches and damage on the surface of the injection molded part.

[0037] Among them, the upper injection cavity and the lower injection cavity are both set to be columnar, a spray groove is opened in the lower injection cavity, the diameter of the piston top plate 303 and the annular PE foam 305 are the same as the diameter of the lower injection cavity, and multiple arc-shaped foam sheets 306 are connected end to end to form a ring, and a release agent is applied to the lower injection cavity through the annular PE foam 305.

[0038] Among them, an air intake check valve and an exhaust check valve are fixedly installed in the multiple air inlet holes and the multiple air injection holes, respectively, a No. 1 pressure valve is fixedly installed in the multiple connecting pipes 106, and a No. 2 pressure valve is fixedly installed in the air outlet pipe 108. The safety pressure value of the No. 1 pressure valve is greater than the safety pressure value of the No. 2 pressure valve. Air is sucked in through the air inlet holes and injected into the high-pressure chamber 1014 through the air injection holes.

[0039] Among them, an annular T-shaped groove 1016 is opened in multiple fixed grooves 1012, and two No. 2 support rods 203a are symmetrically fixedly connected to one side of multiple ring gears 203. The other end of each No. 2 support rod 203a is fixedly connected to a limiting block 203b, and each limiting block 203b is slidably connected in the annular T-shaped groove 1016, so that the ring gear 203 is supported by the No. 2 support rod 203a and the limiting block 203b.

[0040] Among them, a No. 1 support rod 202a is fixedly inserted in the center of multiple driving gears 202, and both ends of multiple No. 1 support rods 202a are rotatably connected to the inner wall of the fixed groove 1012, so that the driving gear 202 is supported by the No. 1 support rod 202a.

[0041] Among them, one end of multiple rotating rods 208 is rotatably connected to the inner wall of the fixed groove 1012, and multiple piston push plates 213 are slidably connected to the inner wall of the extrusion chamber 1013, and the rotating disk 209 is driven to rotate through the rotating rods 208.

[0042] Among them, electric heating plates 107 are fixedly installed on the inner walls of multiple liquid storage chambers 1015, and two liquid adding tubes are symmetrically fixedly connected to the side walls of the lower mold 101 and are respectively connected to the liquid storage chambers 1015. The other end of each liquid adding tube is meshedly connected with a sealing cover. The release agent is heated by the electric heating plate 107 to keep it at a suitable temperature, and when high-pressure gas is blown into the release agent through the connecting pipe 106, it will stir the release agent to make it heated evenly.

[0043] Among them, the disc 302 is set in the spray tank, the piston top plate 303 is slidably connected to the inner wall of the lower injection cavity, the telescopic end of the electric telescopic rod 301 is slidably connected to the inner wall of the lower mold 101, and the material of each fixed ring 304 is set to be carbon fiber composite material, and the surface is relatively smooth, and the annular PE foam 305 is driven to move through the fixed ring 304. Embodiment 2

[0044] A method for using an automatic demoulding mechanism for a toy plastic mold, based on the first embodiment, comprises the following steps: S1, during injection molding, the upper mold 102 is driven downward by the hydraulic telescopic rod 103 to fit with the lower mold 101, and the injection liquid is injected through the injection pipe 104, and then water circulation cooling is realized through the cooling water inlet 105, the circulating water pipeline and the cooling water outlet, so that the injection molded part is formed; S2, the upper mold 102 is driven to move upward and separate from the lower mold 101 through the hydraulic telescopic rod 103. In this process, the tooth plate 201 is driven to move upward through the upper mold 102, and the ring gear 203 is driven to rotate through the cooperation with the driving gear 202, and the ratchet 207 is driven to rotate through the ring gear 203 and the pawl 205. The piston push plate 213 is driven to move left and right through the arrangement of the ratchet 207, the rotating rod 208, the rotating disk 209, the connecting rod 211 and the push rod 212, and the knocking block 214 is driven by the piston push plate 213 to repeatedly hit the lower mold 101, so that the lower mold 101 vibrates and the injection molded part is separated from the inner wall of the mold; In S3 and S2, the piston push plate 213 will inhale air through the air inlet hole for many times while moving left and right, and inject it into the high-pressure chamber 1014 through the air injection hole. When the air pressure in the high-pressure chamber 1014 is greater than the safety value of the No. 1 pressure valve, the No. 1 pressure valve opens, and the high-pressure gas enters the liquid storage chamber 1015 through the connecting pipe 106, and then is discharged into the nozzle 109 through the air outlet pipe 108. The high-pressure gas mixed with the release agent is sprayed out through the high-speed water mist nozzle 109a, and the high-speed gas sprayed on the annular PE foam 305 will drive the fixed ring 304 to rotate, and at the same time, the release agent is evenly sprayed on the annular PE foam 305; S4, when the upper mold 102 is separated from the lower mold 101, the electric telescopic rod 301 drives the disc 302 to move upward, and the molded part is ejected from the lower injection cavity through the disc 302 and the piston top plate 303, and at the same time, the arc-shaped foam sheet 306 is squeezed onto the annular PE foam 305 through the lower injection cavity. At this time, the annular PE foam 305 is squeezed so that the release agent is squeezed out and evenly applied to the lower injection cavity; S5, finally, the injection molded part is removed, and then the electric telescopic rod 301 drives the disc 302 and the piston top plate 303 to move downward and reset, and the injection molding process is repeated.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic demoulding mechanism for a toy plastic mold, characterized in that: include: A main body unit (100), the main body unit (100) comprising a lower mold (101) and an upper mold (102) matched therewith, the lower mold (101) and the upper mold (102) respectively having a lower injection cavity and an upper injection cavity, the upper end of the lower mold (101) having two grooves (1011) symmetrically formed therein, each of the grooves (1011) having a fixing groove (1012) formed therein, each of the fixing grooves (1012) having an extrusion cavity (1013), the lower mold (101) having two high-pressure cavities (1014) and two liquid storage cavities (1015) symmetrically formed therein, the side wall of the lower mold (101) having two air inlet holes and The lower mold (101) is connected to an extrusion cavity (1013), each of the extrusion cavities (1013) is connected to a high-pressure cavity (1014) via an air injection hole, each of the high-pressure cavities (1014) is connected to a liquid storage cavity (1015) via a connecting pipe (106), one side of each of the liquid storage cavities (1015) is fixedly connected to an air outlet pipe (108), the other end of each of the air outlet pipes (108) is fixedly connected to a nozzle (109), and the opposite side of each of the nozzles (109) is symmetrically fixedly connected to two high-speed water mist nozzles (109a), each of the high-speed water mist nozzles (109a) is arranged at an angle of 45 degrees, and a cavity is provided in the lower mold (101); A vibration mechanism (200), wherein the vibration mechanism (200) is arranged in two groups, each group of the vibration mechanism (200) comprises a tooth plate (201), each tooth plate (201) is fixedly connected to the lower end of the upper mold (102), one side of each tooth plate (201) is meshedly connected to a driving gear (202), one side of each driving gear (202) is meshedly connected to a ring gear (203), the front side of each ring gear (203) is fixedly connected to a rotating shaft (204), each rotating shaft (204) is rotatably sleeved with a ratchet (205), each rotating shaft (204) is sleeved with a torsion spring (206), and both ends of each torsion spring (206) are respectively fixedly connected to the side walls of the rotating shaft (204) and the ratchet (205), Each group of the vibration mechanisms (200) further comprises a ratchet (207), each of the ratchet (207) being meshedly connected with the pawl (205), a rotating rod (208) being fixedly inserted at the center of each ratchet (207), one end of each rotating rod (208) being fixedly connected with a rotating disk (209), the front side of each rotating disk (209) being rotatably connected with a connecting block (210), a connecting rod (211) being fixedly connected to the side wall of each connecting block (210), the other end of each connecting rod (211) being rotatably connected with a push rod (212), the other end of each push rod (212) being rotatably connected with a piston push plate (213), and the other side of each piston push plate (213) being fixedly connected with a plurality of knocking blocks (214) at equal intervals; A coating mechanism (300) is provided, the coating mechanism (300) comprising an electric telescopic rod (301), the electric telescopic rod (301) being fixedly connected in a cavity, the telescopic end of the electric telescopic rod (301) penetrating the cavity and being fixedly connected to a disc (302), a sleeve groove (302a) being provided on the side wall of the disc (302), a fixing ring (304) being rotatably sleeved in the sleeve groove (302a), an annular PE foam (305) being fixedly sleeved on the fixing ring (304), a plurality of arc-shaped foam sheets (306) being fixedly connected at equal intervals to the side wall of the annular PE foam (305), and a piston top plate (303) being fixedly connected to the upper end of the disc (302).

2. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: The upper injection cavity and the lower injection cavity are both arranged in a columnar shape, a spraying groove is provided in the lower injection cavity, the diameters of the piston top plate (303) and the annular PE foam (305) are both the same as the diameter of the lower injection cavity, and a plurality of the arc-shaped foam sheets (306) are connected end to end and arranged in a ring shape.

3. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: An air intake check valve and an air exhaust check valve are fixedly installed in each of the plurality of air intake holes and the plurality of air injection holes, respectively; a No. 1 pressure valve is fixedly installed in each of the plurality of connecting pipes (106); a No. 2 pressure valve is fixedly installed in the air outlet pipe (108); and a safety pressure value of the No. 1 pressure valve is greater than a safety pressure value of the No. 2 pressure valve.

4. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: An annular T-shaped groove (1016) is provided in each of the plurality of fixed grooves (1012); one side of each of the plurality of ring gears (203) is symmetrically fixedly connected to two No. 2 support rods (203a); the other end of each No. 2 support rod (203a) is fixedly connected to a limiting block (203b); and each limiting block (203b) is slidably connected in the annular T-shaped groove (1016).

5. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: A number one support rod (202a) is fixedly inserted into the center of each of the plurality of driving gears (202), and both ends of each of the number one support rods (202a) are rotatably connected to the inner wall of the fixing groove (1012).

6. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: One end of each of the plurality of rotating rods (208) is rotatably connected to the inner wall of the fixing groove (1012), and each of the plurality of piston push plates (213) is slidably connected to the inner wall of the extrusion chamber (1013).

7. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: An electric heating plate (107) is fixedly mounted on the inner walls of the plurality of liquid storage chambers (1015); two liquid adding tubes are symmetrically fixedly connected to the side walls of the lower mold (101) and are respectively connected to the liquid storage chambers (1015); and the other end of each liquid adding tube is meshingly connected to a sealing cover.

8. The automatic demoulding mechanism for toy plastic mold according to claim 2, characterized in that: The disc (302) is arranged in the spray tank, the piston top plate (303) is slidably connected to the inner wall of the lower injection cavity, the telescopic end of the electric telescopic rod (301) is slidably connected to the inner wall of the lower mold (101), and the material of each fixing ring (304) is set to be a carbon fiber composite material and has a relatively smooth surface.

9. The automatic demoulding mechanism for toy plastic mold according to claim 1, characterized in that: Two hydraulic telescopic rods (103) are symmetrically fixedly connected to the upper end of the upper mold (102); a liquid injection tube (104) is fixedly embedded in the upper mold (102) and is connected to the upper injection cavity; a plurality of circulating water pipelines are opened in the lower mold (101); a plurality of cooling water inlets (105) and cooling water outlets are symmetrically fixedly connected at equal intervals on the side wall of the lower mold (101), and are respectively connected to the circulating water pipelines.

10. A method for using an automatic demoulding mechanism for a toy plastic mold, using the automatic demoulding mechanism for a toy plastic mold according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, during injection molding, the upper mold (102) is driven by the hydraulic telescopic rod (103) to move downward and fit with the lower mold (101), and the injection liquid is injected through the injection pipe (104), and then water circulation cooling is achieved through the cooling water inlet (105), the circulating water pipeline and the cooling water outlet, so that the injection molded part is formed; S2, the upper mold (102) is driven to move upward and separate from the lower mold (101) by the hydraulic telescopic rod (103). During this process, the tooth plate (201) is driven to move upward by the upper mold (102), and the ring gear (203) is driven to rotate by cooperation with the driving gear (202). The ratchet (207) is driven to rotate by the ring gear (203) and the pawl (205). The piston push plate (213) is driven to move left and right by the arrangement of the ratchet (207), the rotating rod (208), the rotating disk (209), the connecting rod (211) and the push rod (212). The piston push plate (213) drives the striking block (214) to repeatedly strike the lower mold (101), so that the lower mold (101) vibrates and the injection molded part is separated from the inner wall of the mold; In S3 and S2, the piston push plate (213) sucks in air through the air inlet hole multiple times while moving left and right, and injects air into the high-pressure chamber (1014) through the air injection hole. When the air pressure in the high-pressure chamber (1014) is greater than the safety value of the No. 1 pressure valve, the No. 1 pressure valve opens, and the high-pressure gas enters the liquid storage chamber (1015) through the connecting pipe (106), and then is discharged into the nozzle (109) through the air outlet pipe (108). The high-pressure gas mixed with the release agent is sprayed out through the high-speed water mist nozzle (109a), and the high-speed gas is sprayed on the annular PE foam (305), which drives the fixed ring (304) to rotate, and at the same time, the release agent is evenly sprayed on the annular PE foam (305); S4, when the upper mold (102) is separated from the lower mold (101), the electric telescopic rod (301) drives the disc (302) to move upward, and the injection molded part is ejected from the lower injection cavity through the disc (302) and the piston top plate (303), and at the same time, the arc-shaped foam sheet (306) is squeezed onto the annular PE foam (305) through the lower injection cavity. At this time, the annular PE foam (305) is squeezed so that the release agent is squeezed out and evenly applied to the lower injection cavity; S5, finally, the injection molded part is removed, and then the electric telescopic rod (301) drives the disc (302) and the piston top plate (303) to move downward and reset, and the injection molding process is repeated.

Images