Energy-saving and efficient electronic cigarette plastic mold

Abstract

The invention relates to the technical field of electronic cigarette processing, in particular to an energy-saving and efficient electronic cigarette plastic mold which comprises a movable mold, a fixed mold and a cooling mold and further comprises a mounting seat fixedly embedded in one side of the movable mold, fixed seats are embedded in the mounting seat at equal intervals, and a transmission mechanism is mounted on one side of each fixed seat in a transmission mode. A cooling cavity is formed in the inner wall of the cooling mold. The cooling mold can be rapidly replaced through the locking piece capable of moving in an opening and closing mode, so that the cooling mold can be adjusted according to the model and specification of the electronic cigarette, and the cooling mold can be rapidly adapted to market changes and meet diversified production requirements by replacing cooling molds of different models; the cooling cavity abuts against the surface of the cooling mold and changes along with the shape change of the cooling mold, so that cooling liquid in the cooling cavity rapidly and evenly takes away heat on the surface of the cooling mold, the yield of the electronic cigarette plastic shell is increased, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electronic cigarette processing, and in particular to an energy-saving and efficient electronic cigarette plastic mold. Background Art

[0002] The electronic cigarette shell is an important part of the electronic cigarette. During the production and processing of the electronic cigarette, the electronic cigarette shell needs to be processed by injection molds. Several electronic cigarette plastic shells need to be injection molded on a strip. During injection molding, a whole strip needs to be placed in the mold. After injection molding, it is also necessary to demold well to ensure product quality. Therefore, the electronic cigarette plastic mold plays a vital role in the manufacture of electronic cigarettes. It is not only the basis of the appearance and structure of the electronic cigarette, but also directly affects the function and user experience of the electronic cigarette. High-quality molds can ensure the accuracy, quality and consistency of electronic cigarette products. For this reason, an energy-saving and efficient electronic cigarette plastic mold is proposed; In the process of realizing the present invention, the inventors found that at least the following problems exist in the prior art that have not been solved: the mold models are mostly fixed and cannot be replaced to adapt to market changes, and cannot meet diversified production needs. In addition, the cooling effect of the cooling system is poor, which increases energy consumption and does not meet the market demand for energy saving. The poor cooling effect also leads to uneven cooling of the electronic cigarette plastic shell, which is prone to deformation or cracks, resulting in a low yield rate of the electronic cigarette plastic shell. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: powder metallurgy parts are easily deformed during the manufacturing process, and there are generally problems such as difficult clamping and positioning and low processing efficiency during CNC machining.

[0004] To achieve the above object, the present invention provides the following technical solutions: An energy-saving and efficient electronic cigarette plastic mold, comprising a movable mold, a fixed mold and a cooling mold, and also comprising a mounting seat fixedly embedded in one side of the movable mold, wherein a fixed seat is equidistantly embedded and installed inside the mounting seat, a transmission mechanism is installed on one side of the fixed seat, and the transmission mechanism has five second worm gears that can rotate in the same direction, the second worm gears are rotatably installed on one side of the fixed seat, one side of the second worm gear is meshed with a first worm, and the first worm has five helical teeth meshed with the second worm gears and a shaft, and the five helical teeth are equidistantly distributed on the outside of the shaft; An extended threaded rod is rotatably installed inside the fixed seat, and the thread of the threaded rod is installed through the second worm gear, one end of the threaded rod is fixedly installed with an axis frame, and the axis frame is movably installed inside the fixed seat, and locking pieces are installed on both sides of the axis frame through axis bolts, and the two locking pieces are movably connected to the guide slide rods inside the slide rod seats through slide grooves, and the two slide rod seats are fixedly installed on both sides of the fixed seat, and the inner wall of the cooling mold is provided with a cooling cavity.

[0005] Preferably, the outer side of the first worm is mounted on one side of the mounting seat via a bearing seat, a first worm wheel is fixedly mounted on the top of the first worm, a transmission worm is meshingly connected to one side of the first worm wheel, and the transmission worm rotates and extends to the front side of the mounting seat.

[0006] Preferably, cooling liquid channels are provided on both sides of the inner wall of the plug-in slot, and a cooling liquid pipe is installed through one end of the cooling liquid channel.

[0007] Preferably, one side of the mounting seat is provided with plug-in grooves at equal intervals, and a plug-in end is installed on one side of the mounting seat through the plug-in grooves, the plug-in end extends to the interior of the fixing seat, so that the locking element extends to the interior of the plug-in end, and the plug-in end is locked by the locking element extending to the interior, and one end of the plug-in end is through-connected with one end of the cooling mold.

[0008] Preferably, cooling liquid grooves are provided on both sides of the plug-in end, and one end of the cooling liquid groove is connected to the other end of the cooling liquid channel.

[0009] Preferably, a relatively tilting rod and two sets of positioning rods are fixedly installed on one side of the movable mold close to the fixed mold, and a mounting groove is opened inside the movable mold to provide an embedded position for the mounting seat.

[0010] Preferably, the interior of the fixed mold is movably mounted with a relatively movable seat through a slide rail groove, and the opposite side of the movable seat is embedded with a mold sleeve through a slot, and the combined mold sleeves form a closed sleeve, and the interior of the movable seat is provided with an inclined groove, and the inclined rod extends to the inside of the inclined groove for movably connection.

[0011] Preferably, a positioning hole corresponding to the positioning rod is provided on one side of the fixed mold close to the movable mold, and a movable channel connected to the inclined groove is provided on the other side of the fixed mold. A feed channel is provided inside the fixed mold, and the discharge port of the feed channel is connected to one end of the merged mold sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention can quickly replace the cooling mold by opening and closing the movable lock, so that the cooling mold can be adjusted according to the model and specification of the electronic cigarette, ensuring that the design and production of the mold can match it, shortening the time required for replacing the cooling mold, and greatly improving production efficiency. In addition, by reducing the idle time during the replacement of the cooling mold, switching to a new production batch more quickly promotes the improvement of production capacity and makes production management more rational. At the same time, by replacing cooling molds of different models, it is possible to adapt to market changes more quickly and meet diversified production needs, thereby reducing the production cost of electronic cigarettes. By having the cooling cavity close to the surface of the cooling mold and changing with the shape of the cooling mold, the coolant inside the cooling cavity can quickly and evenly take away the heat from the surface of the cooling mold, thereby achieving rapid and even cooling and shaping of the electronic cigarette plastic shell; by having the cooling cavity close to the surface of the cooling mold, it is ensured that the electronic cigarette plastic shell can be quickly cooled and shaped after injection molding, thereby improving the cooling efficiency of the electronic cigarette plastic shell, reducing energy consumption, achieving energy-saving effects and improving production efficiency, and the design of the cooling cavity that changes with the shape of the cooling mold can ensure uniform cooling and shaping of the electronic cigarette plastic shell, avoid deformation or cracks caused by uneven cooling of the electronic cigarette plastic shell, and improve the yield rate of the electronic cigarette plastic shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall axial side structure of the present invention; Figure 3 It is a schematic diagram of the unfolded structure of the movable seat of the present invention; Figure 4 It is a schematic diagram of the internal structure of the mold of the present invention; Figure 5 It is a schematic diagram of the internal structure of the fixed mold of the present invention; Figure 6 It is a schematic diagram of the structure of the mounting seat and the cooling mold of the present invention; Figure 7 It is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 8 It is a schematic diagram of the transmission structure of the fixing seat and the transmission mechanism of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the fixing base of the present invention; Fig.10 It is a schematic diagram of the internal structure of the cooling mold of the present invention; Fig.11 It is a schematic diagram of the internal structure of the mounting seat and the cooling mold of the present invention; Fig.12 It is a schematic diagram of the internal structure of the fixing seat of the present invention.

[0014] In the figure: 1. movable mold; 101. positioning rod; 102. tilting rod; 2. fixed mold; 201. slide rail groove; 202. feed channel; 203. movable channel; 204. positioning hole; 3. movable seat; 301. mold sleeve; 302. tilting groove; 4. mounting seat; 401. plug-in slot; 402. coolant channel; 403. coolant pipe; 404. fixed seat; 4041. threaded rod; 4042. shaft frame; 4043. lock; 4044. slide rod seat; 405. transmission mechanism; 4051. first worm gear; 4052. first worm; 4053. second worm gear; 4054. transmission worm; 5. cooling mold; 501. cooling cavity; 502. plug-in end; 503. coolant tank. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-12The present invention proposes an energy-saving and efficient electronic cigarette plastic mold, comprising a movable mold 1, a fixed mold 2 and a cooling mold 5, and also comprises a mounting seat 4 fixedly embedded in one side of the movable mold 1, wherein a fixed seat 404 is equidistantly embedded in the mounting seat 4, and a transmission mechanism 405 is installed on one side of the fixed seat 404, and the transmission mechanism 405 has five second worm gears 4053 that can rotate in the same direction, and the second worm gears 4053 are respectively rotatably installed on one side of the fixed seat 404, and one side of the second worm gear 4053 is meshedly connected with a first worm 4052, and the first worm 4052 has five helical teeth meshed with the second worm gear 4053 and a shaft, and the five helical teeth are equidistantly distributed on the outside of the shaft; An extended threaded rod 4041 is rotatably installed inside the fixed seat 404, and the threaded rod 4041 is threadedly installed inside the second worm gear 4053, an end of the threaded rod 4041 is fixedly installed with a shaft frame 4042, and the shaft frame 4042 is movably installed inside the fixed seat 404, and locking pieces 4043 are installed on both sides of the shaft frame 4042 through shaft bolts, and the two locking pieces 4043 are movably connected to the guide slide bars inside the slide bar seat 4044 through slide grooves, and the two slide bar seats 4044 are fixedly installed on both sides of the fixed seat 404, and the inner wall of the cooling mold 5 is provided with a cooling cavity 501; It should be noted that: Fig.12 It can be seen that a threaded connection is provided inside the second worm gear 4053, and the second worm gear 4053 is threadedly connected to the threaded rod 4041 through the internal threaded hole. The second worm gear 4053 acts as an active component, and transmits force to the threaded rod 4041 through rotational motion, so that the threaded rod 4041 generates linear displacement. Depend on Fig.12 It can be seen that a slide groove is provided inside the lock 4043, and the slide groove is composed of a straight slide groove and an oblique slide groove. When the oblique slide groove inside the lock 4043 moves to the slide rod, the two locks 4043 move inwards relatively to each other. When the straight slide groove inside the lock 4043 moves to the slide rod, the two locks 4043 move inwards to a parallel state. The working process of the transmission mechanism 405 is as follows: Figure 8-12As can be seen, when the first worm 4052 rotates, the five synchronously rotating spiral teeth drive the meshing connected second worm wheel 4053 to rotate. When the second worm wheel 4053 rotates, the threaded hole inside the second worm wheel 4053 meshes with the thread of the threaded rod 4041. Due to the inclined surface effect of the thread, the second worm wheel 4053 generates a thrust along the axial direction of the thread on the threaded rod 4041 during the rotation process. This thrust causes the threaded rod 4041 to move linearly in the opposite direction of the rotation of the threaded hole, thereby realizing the telescopic movement function of the threaded rod 4041. The telescopically moving threaded rod 4041 drives the locking element 4043 to move through the shaft frame 4042. At the same time, the moving locking element 4043 guides the moving direction of the locking element 4043 through the slide groove and the slide rod inside the slide rod seat 4044, so that the locking element 4043 opens and closes. The cooling mold 5 can be quickly replaced by opening and closing the movable lock 4043, so that the cooling mold 5 can be adjusted according to the model and specification of the electronic cigarette, ensuring that the design and production of the mold can match it, shortening the time required for replacing the cooling mold 5. In addition, by reducing the idle time during the replacement of the cooling mold 5, it is possible to switch to a new production batch more quickly. At the same time, by replacing different models of cooling molds 5, it is possible to adapt to market changes more quickly and meet diversified production needs; Depend on Figure 9-11 It can be seen that the cooling cavity 501 is close to the surface of the cooling mold 5. The cooling cavity 501 changes with the shape of the cooling mold 5, so that the cooling cavity 501 can quickly and evenly take away the heat from the surface of the cooling mold 5, ensuring that the plastic shell of the electronic cigarette can be quickly cooled and shaped after injection molding. By changing the design of the cooling cavity 501 as the shape of the cooling mold 5 changes, uniform cooling can be ensured.

[0019] Furthermore, the outer side of the first worm 4052 is mounted on one side of the mounting seat 4 through a bearing seat, the top of the first worm 4052 is fixedly mounted with a first worm wheel 4051, one side of the first worm wheel 4051 is meshedly connected with a transmission worm 4054, and the transmission worm 4054 rotates and extends to the front side of the mounting seat 4; It should be noted that: Figure 3 It can be seen that a groove is provided on one side of the mounting seat 4 close to the transmission worm 4054, and the groove provides installation space for the transmission worm 4054 and the first worm wheel 4051, so as to prevent the transmission worm 4054 and the first worm wheel 4051 from contacting the surface of the mounting seat 4 and affecting the transmission; Depend on Figure 6It can be seen that the transmission worm 4054 extends to one end of the front side of the mounting seat 4 and is provided with an inner hexagonal groove, which is engaged with the inner hexagonal groove at one end of the transmission worm 4054 through a corresponding hexagonal auxiliary tool, and the transmission worm 4054 is rotated by utilizing the engaging auxiliary tool. The rotating transmission worm 4054 drives the first worm wheel 4051 to rotate, and the rotating first worm wheel 4051 drives the first worm 4052 to rotate, thereby facilitating the rapid disassembly and assembly of the cooling mold 5 after the mounting seat 4 is installed.

[0020] Furthermore, both sides of the inner wall of the plug slot 401 are provided with a coolant channel 402, and a coolant pipe 403 is installed through one end of the coolant channel 402; It should be noted that: Figure 6-11 It can be seen that the coolant channels 402 on both sides of the inner wall of the plug-in slot 401 are respectively a liquid inlet channel and a liquid outlet channel. Similarly, the corresponding coolant pipes 403 are also respectively a liquid inlet pipe and a liquid outlet pipe, so as to realize the circulation of coolant in and out.

[0021] Further, one side of the mounting seat 4 is provided with plug-in slots 401 at equal intervals, and one side of the mounting seat 4 is plugged with a plug-in end 502 through the plug-in slots 401, and the plug-in end 502 extends to the inside of the fixing seat 404, so that the locking member 4043 extends to the inside of the plug-in end 502, and the plug-in end 502 is locked by the locking member 4043 extending to the inside, and one end of the plug-in end 502 is connected to one end of the cooling mold 5; It should be noted that: Figure 9-11 It can be seen that the plug-in groove 401 is provided to facilitate the insertion of the plug-in end 502 into the interior of the fixing seat 404. When the plug-in end 502 is inserted into the interior of the fixing seat 404, the two locking elements 4043 are in a relatively inwardly close state. When the plug-in end 502 is locked, the two locking elements 4043 are in a relatively horizontal state, and one end of the two locking elements 4043 contacts and locks the inner wall of the plug-in end 502.

[0022] Furthermore, a cooling liquid groove 503 is provided on both sides of the plug end 502, and one end of the cooling liquid groove 503 is connected to the other end of the cooling liquid channel 402; It should be noted that: Figure 10-11 It can be seen that the two cooling liquid grooves 503 corresponding to the cooling liquid channel 402 are respectively a liquid inlet groove and a liquid outlet groove, so that the cooling liquid circulates in and out of the cooling cavity 501 of the inner wall of the cooling mold 5, thereby ensuring the cooling effect of the cooling liquid in the cooling cavity 501; Furthermore, a relatively tilting rod 102 and two sets of positioning rods 101 are fixedly installed on one side of the movable mold 1 close to the fixed mold 2, and a mounting groove is opened inside the movable mold 1 to provide an embedded position for the mounting seat 4; It should be noted that: Figure 1-5It can be known that when the movable mold 1 moves close to the fixed mold 2, the movable mold 1 drives the tilting rod 102 and the two groups of positioning rods 101 to move close to the fixed mold 2, and the movable tilting rod 102 moves inside the tilting groove 302, and cooperates with the tilting groove 302 to drive the two relatively movable seats 3 to move relatively close to each other until they are docked, so that the two mold sleeves 301 are docked to form a closed sleeve, and the two groups of positioning rods 101 are moved to the inside of the positioning hole 204, so as to achieve the accuracy when the movable mold 1 is docked with the fixed mold 2, and the mounting seat 4 is embedded and installed inside the movable mold 1 through the mounting groove, so as to ensure the airtightness when the movable mold 1 is docked with the fixed mold 2.

[0023] Furthermore, a relatively movable seat 3 is movably mounted inside the fixed mold 2 through the slide rail groove 201, and a mold sleeve 301 is embedded in the opposite side of the movable seat 3 through a slot, and the combined mold sleeve 301 forms a closed sleeve, and an inclined groove 302 is opened inside the movable seat 3, and the inclined rod 102 extends to the inclined groove 302 for movably connection; It should be noted that: Figure 5 It can be seen that the two sides of the mold sleeve 301 are fixedly installed with clamping strips corresponding to the clamping slots. The mold sleeve 301 is installed by the clamping slots and the clamping strips, which facilitates the disassembly and replacement of the mold sleeve 301, so that the mold sleeve 301 matches the cooling mold 5. The workflow of automatic demoulding of the movable seat 3 is as follows: When the tilting rod 102 moves, when the tilting surface of the tilting rod 102 approaches the tilting groove 302, the two movable seats 3 move relatively close to each other. When the tilting rod 102 directly approaches the tilting groove 302, the two movable seats 3 move relatively far away from each other. The two movable seats 3 moving relatively far away from each other complete the automatic demoulding of the plastic shell of the electronic cigarette.

[0024] Furthermore, a positioning hole 204 corresponding to the positioning rod 101 is provided on one side of the fixed mold 2 close to the movable mold 1, and a movable channel 203 communicating with the inclined groove 302 is provided on the other side of the fixed mold 2. A feed channel 202 is provided inside the fixed mold 2, and a discharge port of the feed channel 202 is connected to one end of the combined mold sleeve 301. It should be noted that: Figure 1-5 It can be seen that the positioning rod 101 is plugged into the positioning hole 204 to avoid misalignment between the fixed mold 2 and the movable mold 1, and ensure the accuracy of the corresponding positions of the fixed mold 2 and the movable mold 1. The movable channel 203 facilitates the telescopic movement of the tilting rod 102. The feed channel 202 is connected to the molten plastic material through a pipeline to supply the molten plastic material. The feed channel 202 distributes the molten plastic material to the mold cavity between the closed sleeve composed of the two mold sleeves 301 and the cooling mold 5, and the plastic material is evenly filled with the mold cavity.

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An energy-saving and efficient electronic cigarette plastic mold, comprising a movable mold (1), a fixed mold (2) and a cooling mold (5), characterized in that: It also includes a mounting seat (4) fixedly embedded in one side of the movable mold (1), a fixed seat (404) being equidistantly embedded in the mounting seat (4), a transmission mechanism (405) being transmission-mounted on one side of the fixed seat (404), and the transmission mechanism (405) having five second worm gears (4053) that can rotate in the same direction, the second worm gears (4053) being rotationally mounted on one side of the fixed seat (404), one side of the second worm gear (4053) being meshedly connected with a first worm (4052), and the first worm (4052) having five helical teeth correspondingly meshed with the second worm gears (4053) and a shaft, and the five helical teeth being equidistantly distributed on the outside of the shaft; An extended threaded rod (4041) is rotatably installed inside the fixed seat (404), and the threaded rod (4041) is threadedly installed inside the second worm gear (4053). An axis frame (4042) is fixedly installed on one end of the threaded rod (4041), and the axis frame (4042) is movably installed inside the fixed seat (404). Locking members (4043) are installed on both sides of the axis frame (4042) through axle bolts. The two locking members (4043) are movably connected to the guide slide bars inside the slide bar seats (4044) through slide grooves, and the two slide bar seats (4044) are fixedly installed on both sides of the fixed seat (404). The inner wall of the cooling mold (5) is provided with a cooling cavity (501).

2. An energy-saving and efficient electronic cigarette plastic mold according to claim 1, characterized in that: The outer side of the first worm (4052) is mounted on one side of the mounting seat (4) via a bearing seat, a first worm wheel (4051) is fixedly mounted on the top of the first worm (4052), one side of the first worm wheel (4051) is meshingly connected with a transmission worm (4054), and the transmission worm (4054) is rotatably extended to the front side of the mounting seat (4).

3. The energy-saving and efficient electronic cigarette plastic mold according to claim 1, characterized in that: Cooling liquid channels (402) are provided on both sides of the inner wall of the plug-in slot (401), and a cooling liquid pipe (403) is installed through one end of the cooling liquid channel (402).

4. The energy-saving and efficient electronic cigarette plastic mold according to claim 3, characterized in that: One side of the mounting seat (4) is provided with plugging grooves (401) at equal intervals, and one side of the mounting seat (4) is provided with a plugging end (502) plugged into the plugging groove (401), the plugging end (502) extends into the interior of the fixing seat (404), so that the locking element (4043) extends into the interior of the plugging end (502), and the plugging end (502) is locked by the locking element (4043) extending into the interior, and one end of the plugging end (502) is connected to one end of the cooling mold (5).

5. The energy-saving and efficient electronic cigarette plastic mold according to claim 4 is characterized in that: Cooling liquid grooves (503) are provided on both sides of the plug-in end (502), and one end of the cooling liquid groove (503) is connected to the other end of the cooling liquid channel (402).

6. The energy-saving and efficient electronic cigarette plastic mold according to claim 1, characterized in that: A relatively tilting rod (102) and two sets of positioning rods (101) are fixedly mounted on one side of the movable mold (1) close to the fixed mold (2), and a mounting groove is provided inside the movable mold (1), which provides an embedded position for the mounting seat (4).

7. An energy-saving and efficient electronic cigarette plastic mold according to claim 6, characterized in that: A relatively movable seat (3) is movably mounted inside the fixed mold (2) via a slide rail groove (201); a mold sleeve (301) is embedded in the opposite side of the movable seat (3) via a slot; the combined mold sleeves (301) form a closed sleeve; an inclined groove (302) is provided inside the movable seat (3), and the inclined rod (102) extends to the inside of the inclined groove (302) for movably connection.

8. The energy-saving and efficient electronic cigarette plastic mold according to claim 1, characterized in that: A positioning hole (204) corresponding to the positioning rod (101) is provided on one side of the fixed mold (2) close to the movable mold (1), and a movable channel (203) communicating with the inclined groove (302) is provided on the other side of the fixed mold (2). A feed channel (202) is provided inside the fixed mold (2), and a discharge port of the feed channel (202) is connected to one end of the combined mold sleeve (301).

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