PET plastic bottle blank injection mold and use method

Abstract

The invention belongs to the technical field of plastic bottle processing, and particularly relates to a PET plastic bottle blank injection mold and a using method.The PET plastic bottle blank injection mold comprises a base, a forming mold base is fixed to one side of the top of the base, a movable plate is installed on the other side of the top of the base, and a pushing plate is arranged on one side wall of the movable plate; a plurality of evenly-distributed fixing rings of a double-layer hollow structure are fixed to the outer wall of the pushing plate, a plurality of evenly-distributed die heads are fixed to one side wall of the movable plate and movably penetrate through the pushing plate and the fixing rings, and a liquid pump is fixedly installed at the top of the movable plate. A second electric push rod drives a push plate to move, after a formed blank is pushed and demolded through a fixing ring, in the back moving process, a liquid pump is used for exhausting a demolding agent, the demolding agent is guided into a cavity of the fixing ring through a guide pipe, and then the demolding agent can be evenly sprayed to the surface of a mold head along holes; and therefore, a release agent can be sprayed before injection molding each time, and the situation that a blank body is damaged during demolding is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of plastic bottle processing, in particular to a PET plastic bottle embryo injection mold and a use method thereof. Background Art

[0002] PET plastic bottles, beverage packaging, are not only widely used to package carbonated beverages, drinking water, juice, enzymes and tea beverages, etc., and are the most widely used beverage packaging today, but are also widely used in many fields such as food, chemical, and pharmaceutical packaging. PET plastic has a wide range of applications in the packaging field, whether it is packaging film or coil. PET plastic is used;

[0003] In the process of production and processing of existing PET plastic bottles, it is necessary to use injection molds to mold the embryo. The injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds. The existing injection molds use movable plates to push in actual use, so as to drive the molded embryo to demold. However, during the injection molding process, the die head will be used frequently. The existing equipment does not have the effect of automatically spraying the mold release agent on the die head, which is easy to cause the embryo to be damaged during demolding, thereby causing the defective rate to increase. After demolding, there will be fine particle impurities on the surface of the die head, which is easy to affect the injection molding effect again. For this reason, it is necessary to design a new technical solution to solve it. Summary of the invention

[0004] The purpose of the present invention is to provide a PET plastic bottle embryo injection mold and a use method, which solves the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PET plastic bottle embryo injection mold, comprising a base, a molding mold base is fixed on one side of the top of the base, a support plate is installed on the other side of the top of the base, a first electric push rod is fixed to one side wall of the support plate, a push rod of the first electric push rod penetrates the support plate and is fixedly connected to a movable plate, a push plate is provided on one side wall of the movable plate, a plurality of evenly distributed double-layer hollow structure fixing rings are fixed to the outer wall of the push plate, a plurality of evenly distributed die heads are fixed to one side wall of the movable plate, the die heads movably penetrate the push plate and the fixing ring, a second electric push rod is fixed to one side wall of the movable plate, a push rod of the second electric push rod penetrates the movable plate and is fixedly connected to the push plate;

[0006] A liquid pump is fixedly installed on the top of the movable plate, one end of the liquid pump is fixedly connected to a liquid supply pipe, and the other end of the liquid pump is fixedly connected to a conduit. An annular groove is provided on the inner wall of one end of the fixed ring close to the pushing plate, and a plurality of evenly distributed holes are provided on the inner wall of the annular groove. The conduit passes through the pushing plate and is connected to a plurality of fixed ring cavities.

[0007] By adopting the above technical scheme, first starting the first electric push rod can drive the movable plate and the push plate to move as a whole, so that the die head is inserted into the inner cavity of the forming die base, and then the raw material is introduced into the inner cavity of the forming die base, so that the embryo body is formed by using the forming die base and the die head. After forming, the first electric push rod is started to drive the movable plate and the push plate to move back and reset, and then the second electric push rod is started to drive the push plate and the fixed ring to move along the die head, so as to push the formed embryo body to discharge the material. After pushing the embryo body to discharge the material, when the second electric push rod drives the push plate and the fixed ring to move back, the liquid pump is started to extract the demoulding agent provided by the liquid supply pipe into the conduit, and then enters the cavity of the fixed ring along the conduit, and then can be evenly sprayed to each die head surface along the holes, so that the die head can be sprayed with the demoulding agent, so that when demolding after re-molding, the friction between the embryo body and the die head can be reduced, thereby reducing wear, which is beneficial to reducing the defective rate of the embryo body in the later stage, and can also improve the efficiency of demolding.

[0008] As a preferred embodiment of the present invention, both side walls of the forming mold base are fixed with fixed plates, both sides of the bottom of the fixed plate are fixedly connected through connecting blocks and the top of the base, the inner side wall of the fixed plate is provided with a slide groove, the inner cavity of the slide groove is fixed with a slide rail, the outer wall of the slide rail is provided with an adaptive slider, and the outer wall of the slider is fixedly connected to the side wall of the movable plate.

[0009] By adopting the above technical solution, when the first electric push rod drives the movable plate to move, the movable plate can slide along the slide rail with limited position by using the slider, thereby ensuring high stability of the movement of the movable plate.

[0010] As a preferred embodiment of the present invention, a blower is fixed on one side of the top of the base, a carrier plate is installed on the top plate of the fixed plate, a hollow plate is connected to the top of the carrier plate, a plurality of evenly distributed air outlet nozzles are fixedly connected to the inner side wall of the hollow plate, an air duct is fixedly connected to the output end of the blower, and the outer ends of the air duct are respectively connected to the two hollow plates.

[0011] By adopting the above technical solution, the blower can generate wind force to be introduced into the inner cavity of the hollow plate, and then blown toward the surface of the die head through the air outlet nozzle, so that impurities on the surface can be blown away after demoulding, which is beneficial to avoid affecting the injection molding quality during the second injection molding.

[0012] As a preferred embodiment of the present invention, a mounting groove is opened in the middle of the top of the carrier plate, a servo motor is fixedly installed in the inner cavity of the mounting groove, and the outer end of the transmission shaft of the servo motor is fixedly connected to the middle of the bottom of the hollow plate.

[0013] By adopting the above technical solution, the servo motor can drive the hollow plate to rotate reciprocatingly at small angles to both sides, so as to achieve blowing at different angles, which is beneficial to improving the effect of blowing away impurities. At the same time, when blowing through the air outlet nozzle on the hollow plate, a thrust can be generated on the demoulded bottle body from the outside, so that the embryos after demoulding on both sides are concentrated to the middle, so as to ensure that they fall accurately into the discharge hole, which is beneficial to prevent the embryos from falling to other places and ensure the accuracy of discharge.

[0014] As a preferred embodiment of the present invention, a feed hole is opened on one side wall of the fixing ring, and the feed hole is connected to the conduit.

[0015] By adopting the above technical solution, the material can enter the cavity of the fixing ring along the feed hole.

[0016] As a preferred embodiment of the present invention, a discharge hole is provided in the middle of the top of the base.

[0017] By adopting the above technical solution and setting the discharge hole, the embryo body can directly fall into the discharge hole after demoulding, and then be discharged through the discharge hole.

[0018] As a preferred embodiment of the present invention, the top of the forming die base is fixedly connected with a feed pipe.

[0019] By adopting the above technical solution and setting the feed pipe, it is possible to continuously supply injection molding raw materials to the molding die base.

[0020] As a preferred embodiment of the present invention, mounting holes are provided at the four corners of the top of the base.

[0021] By adopting the above technical solution and setting the mounting holes, it is convenient to install and fix the entire device.

[0022] The present invention also relates to a method for using a PET plastic bottle embryo injection mold, comprising the following method steps:

[0023] S1: First, the first electric push rod is started to drive the movable plate and the push plate to move as a whole, so that the die head is inserted into the inner cavity of the forming die base, and then the raw material is introduced into the inner cavity of the forming die base, so as to use the forming die base and the die head to form the embryo;

[0024] S2: After molding, the first electric push rod is started to drive the movable plate and the push plate to move back and reset, and then the second electric push rod is started to drive the push plate and the fixed ring to move along the die head, so as to push the formed embryo body to be discharged. When discharging, air is blown through the air outlet nozzle on the hollow plate to generate thrust on the demoulding bottle body from the outside, so that the embryo bodies after demoulding on both sides are concentrated to the middle, so as to ensure that they fall into the discharge hole accurately, and at the same time, the air blown by the air outlet nozzle is blown to the surface of the die head, so that impurities on the surface can be blown away after demoulding;

[0025] S3: After pushing the embryo body to unload, the second electric push rod drives the push plate and the fixed ring to move back, and the liquid pump is started to extract the release agent provided by the liquid supply pipe into the conduit, and then enters the cavity of the fixed ring along the conduit, and then can be evenly sprayed to each die head surface along the holes.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention drives the push plate to move by the second electric push rod, pushes the formed embryo body to demold by the fixed ring, and then introduces the demolding agent into the cavity of the fixed ring by the conduit during the return movement by the liquid pump, and then can be evenly sprayed on the surface of the die head along the holes, so that the demolding agent can be sprayed before each injection molding, thereby realizing efficient demolding, and is conducive to avoiding the situation that the embryo body is damaged during demolding, thereby helping to reduce the defective rate;

[0028] The blower can generate wind force to be introduced into the inner cavity of the hollow plate, and then blown to the surface of the die head through the air outlet nozzle, so that the impurities on the surface can be blown away after demoulding, which is beneficial to avoid affecting the injection molding quality during the second injection molding. At the same time, the servo motor can drive the hollow plate to rotate reciprocatingly to both sides at a small angle, so as to achieve blowing at different angles, which is beneficial to improve the effect of blowing away impurities;

[0029] When air is blown through the air outlet nozzle on the hollow plate, a thrust can be generated on the outer side of the demoulding bottle body, so that the embryos after demoulding on both sides are concentrated to the middle, so as to ensure that they fall into the discharge hole accurately, which is beneficial to prevent the embryos from falling to other places and ensure the accuracy of discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of a PET plastic bottle embryo injection mold and a method of using the present invention;

[0032] Figure 2 This is a schematic diagram of the side panel structure of a PET plastic bottle embryo injection mold and a method of using the present invention;

[0033] Figure 3 This is a schematic diagram of a fixing ring structure of a PET plastic bottle embryo injection mold and a method of using the present invention;

[0034] Figure 4 The present invention is a schematic diagram of the hollow plate and carrier plate connection structure of a PET plastic bottle embryo injection mold and a method of using the present invention.

[0035] In the figure:

[0036] 1. Base; 11. Mounting hole; 12. Discharge hole; 13. Forming die base; 14. Feed pipe;

[0037] 2. movable plate; 21. push plate; 22. fixed ring; 23. die head; 24. support plate; 25. first electric push rod; 26. second electric push rod; 27. liquid pump; 28. annular groove; 29. ​​hole;

[0038] 3. Fixed plate; 31. Slide rail; 32. Slider;

[0039] 4. Blower; 41. Hollow plate; 42. Air outlet; 43. Carrier plate; 44. Servo motor; 45. Air duct. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The models of electrical appliances provided in the present invention are only for reference, and different models of electrical appliances with the same functions can be replaced according to actual usage.

[0043] See also Figure 1-4The present invention provides a technical solution: a PET plastic bottle embryo injection mold, comprising a base 1, a molding die base 13 is fixed on one side of the top of the base 1, a support plate 24 is installed on the other side of the top of the base 1, a first electric push rod 25 is fixed on one side wall of the support plate 24, a push rod of the first electric push rod 25 penetrates the support plate 24 and is fixedly connected to a movable plate 2, a push plate 21 is arranged on one side wall of the movable plate 2, a plurality of evenly distributed double-layer hollow structure fixing rings 22 are fixed on the outer wall of the push plate 21, a plurality of evenly distributed die heads 23 are fixed on one side wall of the movable plate 2, the die heads 23 movably penetrate the push plate 21 and the fixing ring 22, a second electric push rod 26 is fixed on one side wall of the movable plate 2, a push rod of the second electric push rod 26 penetrates the movable plate 2 and is fixedly connected to the push plate 21;

[0044] A liquid pump 27 is fixedly installed on the top of the movable plate 2, one end of the liquid pump 27 is fixedly connected to a liquid supply pipe, and the other end of the liquid pump 27 is fixedly connected to a conduit. An annular groove 28 is provided on the inner wall of one end of the fixed ring 22 close to the push plate 21, and a plurality of evenly distributed holes 29 are provided on the inner wall of the annular groove 28. The conduit passes through the push plate 21 and is connected to the cavities of multiple fixed rings 22.

[0045] In actual use, firstly, the first electric push rod 25 is started to drive the movable plate 2 and the pushing plate 21 to move as a whole, so that the die head 23 is inserted into the inner cavity of the forming die base 13, and then the raw material is introduced into the inner cavity of the forming die base 13, so that the embryo is formed by using the forming die base 13 and the die head 23. After forming, the first electric push rod 25 is started to drive the movable plate 2 and the pushing plate 21 to move back and reset, and then the second electric push rod 26 is started to drive the pushing plate 21 and the fixing ring 22 to move along the die head 23, so as to push the formed embryo to be discharged. After the body is unloaded, the second electric push rod 26 drives the push plate 22 and the fixed ring 22 to move back, and the liquid pump 27 is started to extract the demoulding agent provided by the liquid supply pipe into the conduit, and then enters the cavity of the fixed ring 22 along the conduit, and then can be evenly sprayed to the surface of each die head 23 along the hole 29, so that the mold release agent can be sprayed on the die head 23, so that the friction between the embryo body and the die head 23 can be reduced when demoulding after re-molding, thereby reducing wear, which is beneficial to reducing the defective rate of the embryo body in the later stage, and at the same time can also improve the efficiency of demoulding.

[0046] Furthermore, mounting holes 11 are provided at the four corners of the top of the base 1. The provision of the mounting holes 11 makes it convenient to install and fix the entire device.

[0047] Furthermore, a discharge hole 12 is provided in the middle of the top of the base 1 , and the discharge hole 12 is provided so that the embryo body can directly fall into the discharge hole 12 after demoulding, and then pass through the discharge hole 12 for discharge.

[0048] It is worth mentioning that a feed pipe 14 is fixedly connected to the top of the molding die base 13 . The provision of the feed pipe 14 enables the molding die base 13 to be continuously supplied with injection molding raw materials.

[0049] It should be noted that a feed hole is provided on one side wall of the fixing ring 22 , and the feed hole is connected to the conduit, so that the material can enter the cavity of the fixing ring 22 through the feed hole.

[0050] like Figure 1 and 2 As shown; both side walls of the forming die base 13 are fixed with a fixed plate 3, both sides of the bottom of the fixed plate 3 are fixedly connected to the top of the base 1 through a connecting block, the inner side wall of the fixed plate 3 is provided with a slide groove, the inner cavity of the slide groove is fixed with a slide rail 31, the outer wall of the slide rail 31 is sleeved with an adapted slider 32, and the outer wall of the slider 32 is fixedly connected to the side wall of the movable plate 2;

[0051] In actual use, when the first electric push rod 25 drives the movable plate 2 to move, the movable plate 2 can use the slider 32 to slide along the slide rail 31 to limit the movement, thereby ensuring that the movable plate 2 has high stability in movement.

[0052] like Figure 1 and 2 , 4; a blower 4 is fixed to one side of the top of the base 1, a carrier plate 43 is installed on the top plate of the fixed plate 3, a hollow plate 41 is connected to the top of the carrier plate 43, a plurality of evenly distributed air outlets 42 are fixedly connected to the inner wall of the hollow plate 41, an air duct 45 is fixedly connected to the output end of the blower 4, and the outer ends of the air duct 45 are respectively connected to the two hollow plates 41;

[0053] The blower 4 can generate wind force to be introduced into the inner cavity of the hollow plate 41, and then blown toward the surface of the die head 23 by the air outlet nozzle 42, so that impurities on the surface can be blown away after demoulding, which helps to avoid affecting the injection molding quality during the second injection molding.

[0054] Furthermore, a mounting groove is provided in the middle of the top of the carrier plate 43, a servo motor 44 is fixedly installed in the inner cavity of the mounting groove, and the outer end of the transmission shaft of the servo motor 44 is fixedly connected to the middle of the bottom of the hollow plate 41;

[0055] The servo motor 44 can drive the hollow plate 41 to rotate reciprocally at a small angle to both sides, so as to achieve blowing at different angles, which is beneficial to improving the effect of blowing away impurities. At the same time, when blowing through the air outlet 42 on the hollow plate 41, a thrust can be generated on the demoulded bottle body from the outside, so that the demoulded embryos on both sides are concentrated to the middle, so as to ensure that they fall accurately into the discharge hole 12, which is beneficial to prevent the embryos from falling to other places and ensure the accuracy of discharge.

[0056] A method for using a PET plastic bottle embryo injection mold, the specific operations are as follows:

[0057] S1: First, the first electric push rod 25 is started to drive the movable plate 2 and the push plate 21 to move as a whole, so that the die head 23 is inserted into the inner cavity of the forming die base 13, and then the raw material is introduced into the inner cavity of the forming die base 13, so as to use the forming die base 13 and the die head 23 to form the embryo;

[0058] S2: After molding, the first electric push rod 25 is started to drive the movable plate 2 and the push plate 21 to move back and reset, and then the second electric push rod 26 is started to drive the push plate 21 and the fixed ring 22 to move along the die head 23, so as to push the molded embryo to be discharged. When discharging, the air can be blown through the air outlet 42 on the hollow plate 41 to generate a thrust on the demoulded bottle body from the outside, so that the embryos after demoulding on both sides are concentrated to the middle, so as to ensure that they fall into the discharge hole 12 accurately, and at the same time, the air blown by the air outlet 42 is blown to the surface of the die head 23, so that the impurities on the surface can be blown away after demoulding;

[0059] S3: After pushing the embryo body to be discharged, the second electric push rod 26 drives the push plate 22 and the fixed ring 22 to move back, and the liquid pump 27 is started to extract the demoulding agent provided by the liquid supply pipe into the conduit, and then enters the cavity of the fixed ring 22 along the conduit, and then can be evenly sprayed to the surface of each die head 23 along the hole 29.

[0060] In addition, the components included in the PET plastic bottle embryo injection mold and the use method of the present invention are all universal standard parts or components known to technical personnel in this field. The structure and principle can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle part of the device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adaptive monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the following working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PET plastic bottle embryo injection mold, comprising a base (1), characterized in that: A molding die seat (13) is fixed on one side of the top of the base (1), a support plate (24) is installed on the other side of the top of the base (1), a first electric push rod (25) is fixed on one side wall of the support plate (24), the push rod of the first electric push rod (25) passes through the support plate (24) and is fixedly connected to the movable plate (2), a push plate (21) is provided on one side wall of the movable plate (2), a plurality of evenly distributed double-layer hollow structure fixing rings (22) are fixed on the outer wall of the push plate (21), a plurality of evenly distributed die heads (23) are fixed on one side wall of the movable plate (2), the die heads (23) movably pass through the push plate (21) and the fixing ring (22), a second electric push rod (26) is fixed on one side wall of the movable plate (2), the push rod of the second electric push rod (26) passes through the movable plate (2) and is fixedly connected to the push plate (21); A liquid pump (27) is fixedly installed on the top of the movable plate (2), one end of the liquid pump (27) is fixedly connected to a liquid supply pipe, and the other end of the liquid pump (27) is fixedly connected to a conduit. An annular groove (28) is provided on the inner wall of one end of the fixed ring (22) close to the pushing plate (21), and a plurality of evenly distributed holes (29) are provided on the inner wall of the annular groove (28). The conduit passes through the pushing plate (21) and is connected to the cavities of the plurality of fixed rings (22).

2. A PET plastic bottle embryo injection mold according to claim 1, characterized in that: The two side walls of the molding die base (13) are fixed with a fixed plate (3), the bottom sides of the fixed plate (3) are fixedly connected to the top of the base (1) through a connecting block, the inner side wall of the fixed plate (3) is provided with a slide groove, the inner cavity of the slide groove is fixed with a slide rail (31), the outer wall of the slide rail (31) is sleeved with an adapted slider (32), and the outer wall of the slider (32) is fixedly connected to the side wall of the movable plate (2).

3. A PET plastic bottle embryo injection mold according to claim 2, characterized in that: A blower (4) is fixed to one side of the top of the base (1); a carrier plate (43) is installed on the top plate of the fixed plate (3); a hollow plate (41) is connected to the top of the carrier plate (43); a plurality of evenly distributed air outlets (42) are fixedly connected to the inner side wall of the hollow plate (41); an air duct (45) is fixedly connected to the output end of the blower (4); and the outer ends of the air duct (45) are respectively connected to the two hollow plates (41).

4. A PET plastic bottle embryo injection mold according to claim 3, characterized in that: A mounting groove is provided in the middle of the top of the carrier plate (43), a servo motor (44) is fixedly installed in the inner cavity of the mounting groove, and the outer end of the transmission shaft of the servo motor (44) is fixedly connected to the middle of the bottom of the hollow plate (41).

5. The PET plastic bottle embryo injection mold according to claim 1, characterized in that: A feed hole is provided on one side wall of the fixing ring (22), and the feed hole is connected to the conduit.

6. The PET plastic bottle embryo injection mold according to claim 1, characterized in that: A discharge hole (12) is provided in the middle of the top of the base (1).

7. The PET plastic bottle embryo injection mold according to claim 1, characterized in that: The top of the molding die base (13) is fixedly connected to a feed pipe (14).

8. The PET plastic bottle embryo injection mold according to claim 1, characterized in that: The four corners of the top of the base (1) are all provided with mounting holes (11).

9. A method for using a PET plastic bottle embryo injection mold, applicable to the PET plastic bottle embryo injection mold according to claims 1-8, characterized in that: The method comprises the following steps: S1: First, the first electric push rod (25) is started to drive the movable plate (2) and the push plate (21) to move as a whole, so that the die head (23) is inserted into the inner cavity of the molding die base (13), and then the raw material is introduced into the inner cavity of the molding die base (13), so as to use the molding die base (13) and the die head (23) to form the embryo; S2: After molding, the first electric push rod (25) is started to drive the movable plate (2) and the push plate (21) to move back and reset, and then the second electric push rod (26) is started to drive the push plate (21) and the fixed ring (22) to move along the die head (23), so as to push the molded embryo body to be discharged. When discharging, air is blown through the air outlet nozzle (42) on the hollow plate (41) to generate a thrust on the demoulding bottle body from the outside, so that the embryo bodies after demoulding on both sides are concentrated to the middle, so as to ensure that they fall accurately into the discharge hole (12). At the same time, the air blown by the air outlet nozzle (42) is blown to the surface of the die head (23), so that impurities on the surface can be blown away after demoulding; S3: After the embryo body is pushed out, the second electric push rod (26) drives the push plate (22) and the fixed ring (22) to move back, and the liquid pump (27) is started to extract the demoulding agent provided by the liquid supply pipe into the conduit, and then enters the cavity of the fixed ring (22) along the conduit, and then can be evenly sprayed to each surface of the die head (23) along the hole (29).

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