Injection mold for toy car production

Abstract

The invention belongs to the technical field of plastic injection molding, and particularly relates to an injection mold for toy car production. Comprising a male die base and a female die base. An injection molding block is installed on the back of the female die base. A first through hole is formed in the middle of the injection molding block; a rotating shaft is rotationally arranged in the first through hole; second through holes are formed in the upper and lower sides of the rotating shaft; an injection molding cylinder is rotationally arranged in the two second through holes; a first push plate is fixed to the side, facing the rotating shaft, of the injection molding pipe. Notches are formed in the opposite sides of the two injection molding cylinders; a transverse plate is mounted in the notch; two vertical plates are fixedly connected to the sides, facing the injection molding cylinder, of the two transverse plates; inclined grooves are formed in the end surfaces of the opposite sides of the two vertical plates; an inclined block slides in the inclined groove; a clamping block is fixedly connected to the side, facing the injection molding cylinder, of the inclined block; by arranging the injection mold, the toy car shell can be demolded without an ejector pin, and the problem of white defects of the toy car shell is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plastic injection molding, and particularly relates to an injection mold for toy car production. BACKGROUND

[0002] As a common entertainment product for children, the shell and main parts of a toy car are usually produced by an injection molding process, which relies on an injection mold to realize batch manufacturing of the product. The injection mold for a toy car is usually composed of a female die, a male die, a gating system, an ejection mechanism and the like, wherein the female die and the male die cooperate to form a cavity consistent with the shape of a toy car part, molten plastic is injected into the cavity through the gating system, and the shape of the required product is formed after cooling and solidification, and finally the molded workpiece is separated from the mold through the ejection mechanism to complete one injection cycle.

[0003] In the gating system of the injection mold for a toy car, the injection port is a key channel connecting the nozzle of the injection machine and the mold cavity, which is usually designed as a conical structure to ensure smooth flow and full filling of the molten plastic. When the injection process is completed, the molten plastic remaining in the main runner will cool and solidify together with the workpiece inside the cavity, forming a conical plastic rod consistent with the shape of the injection port. The condensed material is connected to the toy car workpiece through the gate structure and needs to be removed through cutting or separation process in the subsequent process to ensure the appearance integrity of the toy car product.

[0004] After the mold is opened, the existing injection mold for a toy car applies a pushing force to the toy car workpiece through a ejector pin to eject it from the cavity. However, in this process, white or light-colored marks, i.e. white defects, may appear on the local area where the ejector pin contacts the workpiece. The white defects will destroy the surface consistency of the toy car shell, reduce the product aesthetics and affect the consumer experience. From a structural point of view, long-term local stress may cause the material strength in the defect area to decrease, and cracking or damage may occur during children's play, which poses a safety hazard. SUMMARY

[0005] In order to make up for the shortcomings of the prior art and solve the above technical problems, the application provides an injection mold for toy car production, which can demold the toy car shell without using an ejector pin, avoiding the problem of white defects on the toy car shell. The specific structure is as follows:

[0006] An injection mold for toy car production, comprising a male die seat and a female die seat; the male die seat is provided with a raised toy car model; the female die seat is provided with a recessed toy car groove;

[0007] A injection block is installed on the back of the female die seat; a first through hole is formed in the middle of the injection block; a rotating shaft is rotatably arranged in the first through hole;

[0008] A motor is installed on the left side of the injection block through a mounting bracket, and the motor is used to drive the rotating shaft;

[0009] The second through hole is arranged on the upper and lower sides of the rotating shaft; two injection molding barrels are rotatably arranged in the second through hole, and the injection molding barrels extend into the toy car groove and are slidably connected with the concave die seat; one side of the injection molding barrel extending into the toy car groove is flush with the toy car concave die;

[0010] Two injection molding pipes are arranged on the left side of the injection molding block, and the injection molding pipes extend into the injection molding barrel; a first push plate is fixedly arranged on the side of the injection molding pipe facing the rotating shaft; a first spiral plate is fixedly connected to the side of the first push plate facing the rotating shaft, and the first spiral plate is inserted into the first push plate and slidably connected with the first push plate;

[0011] A guide groove is arranged between the injection molding barrel and the rotating shaft, and the first push plate slides in the guide groove, and the guide groove penetrates the left end surface of the injection molding block;

[0012] The opposite side of each of the two injection molding barrels is provided with a missing slot; a horizontal plate is installed in the missing slot; two vertical plates are fixedly connected to the side of each of the two horizontal plates facing the injection molding barrel; and an inclined slot is arranged on the opposite side end surface of each of the two vertical plates;

[0013] An inclined block slides in the inclined slot; a clamping block is fixedly connected to the side of the inclined block facing the injection molding barrel; a sliding groove is arranged on the side of the injection molding barrel facing the clamping block, and the clamping block extends into the injection molding barrel through the sliding groove.

[0014] As a preferred mode of the present application, two convex plates are fixedly connected to the surface of the toy car model;

[0015] The two convex plates are respectively located at the front and rear positions of the toy car model, and when the mold is closed, the convex blocks are attached to the toy car concave die, and the injection-molded toy car shell has a slot hole for installing the front and rear glass;

[0016] Two circular grooves are arranged on the surface of each of the two convex plates, and the circular grooves correspond to the injection molding barrels one by one after the mold is closed; four flow channels are arranged on the outer circle of each of the two circular grooves.

[0017] As a preferred mode of the present application, a sliding barrel slides in each of the left openings of the two injection molding barrels, and the sliding barrel partially extends into the injection molding barrel;

[0018] The injection molding pipe is inserted into the sliding barrel, and the right end is flush with the right end of the sliding barrel; a second push plate is fixedly arranged on the side of each of the two sliding barrels facing the rotating shaft, and the second push plate slides in the guide groove;

[0019] A second spiral plate is fixedly connected to the left half of the rotating shaft on the left side of the first spiral plate, and the second spiral plate is inserted into the second push plate and slidably connected with the second push plate;

[0020] The pitch of the second spiral plate is greater than the pitch of the first spiral plate.

[0021] As a preferred mode of the present application, the outer ring surface of the sliding cylinder is fixed with a sealing ring, and the sealing ring is attached to the injection cylinder.

[0022] As a preferred mode of the present application, the horizontal plate slides in a slot.

[0023] The side of the horizontal plate away from the injection cylinder is provided with a fixed plate; the electric push rod is installed on the fixed plate, and the elongated rod of the electric push rod is fixed on the horizontal plate.

[0024] As a preferred mode of the present application, the inclined block is a magnet; and the vertical plate is made of a metal material attracted by the magnet.

[0025] As a preferred mode of the present application, the fixed plate is installed on the injection block by bolts.

[0026] The mounting bracket is also fixed on the injection block by bolts.

[0027] As a preferred mode of the present application, the surface of the clamping block is fixed with an arc-shaped plate; and the arc-shaped plate is attached to the outer ring surface of the injection cylinder in the initial state.

[0028] As a preferred mode of the present application, the end surface of the side of the clamping block inserted into the interior of the injection cylinder is an arc surface, and the diameter of the arc surface is the same as the inner ring diameter of the injection cylinder.

[0029] The beneficial effects of the present application are as follows:

[0030] 1. The injection mold for toy car production can fix the toy car shell as a whole by inserting the clamping block into the solidified plastic rod and fixing the toy car shell in multiple directions by the cross-shaped plastic block. When the mold is opened, the toy car shell will gradually separate from the convex mold seat because it is fixed, so it can be demolded without using a ejector pin, thereby eliminating the local excessive stress caused by the contact between the ejector pin and the toy car shell, avoiding white defects caused by micro deformation or change of molecular orientation, ensuring the consistency and aesthetics of the toy car shell surface, preventing safety hazards caused by the decrease of material strength in the white defect area, and making the toy car shell more durable during children's play.

[0031] 2. The injection mold for toy car production provided in the application, the toy car shell is fixed by two cross-shaped plastic blocks in multiple points, this multiple-point and multiple-direction fixing mode can effectively disperse the pulling force received by the toy car when the mold is opened, so that the pulling force is evenly distributed on multiple fixing points, avoiding excessive local stress, and the existing ejection or single-part pulling mode may cause the shell to deform due to the concentration of pulling force, and this mode can evenly distribute the pulling force on multiple fixing points, avoiding excessive concentration of pulling force on the toy car shell, causing the toy car model to deform.

[0032] 3. The injection mold for toy car production provided in the application, since the second spiral piece is inserted into the first push plate and is in sliding connection with the second push plate, and the second push plate is fixedly connected with the sliding cylinder, in the process of rotating the rotating shaft, the second spiral piece will also rotate, thus pushing the second push plate and the sliding cylinder to move to the right. Since the pitch of the second spiral piece is greater than the pitch of the first spiral piece, the distance that the sliding cylinder moves to the right is greater than the distance that the injection cylinder moves to the right, so that the sliding cylinder can gradually insert into the injection cylinder. In the process of inserting the sliding cylinder into the injection cylinder, the plastic rod located in the injection cylinder will continue to move to the right in the injection cylinder on the basis of following the movement of the injection cylinder, thereby forcibly releasing the adhesion between the plastic rod and the injection cylinder, separating the plastic rod from the injection cylinder, avoiding excessive adhesion between the plastic rod and the injection cylinder, and unable to pull the plastic rod out of the injection cylinder when the mold is opened, thereby affecting the subsequent injection process. BRIEF DESCRIPTION OF DRAWINGS

[0033] The application will be further described below with reference to the accompanying drawings.

[0034] Figure 1 is a structural view of the injection mold of the application;

[0035] Figure 2 is a structural view of the injection mold of the application from another perspective;

[0036] Figure 3 is an internal structure view of the injection block in the application;

[0037] Figure 4 is a cooperation structure view of the injection cylinder, rotating shaft and clamping block in the application;

[0038] Figure 5 is a state view of the toy car shell after injection molding in the application;

[0039] Figure 6 is a top view of the injection mold of the application when the mold is closed;

[0040] Figure 7 is a sectional view of the injection mold of the application at A-A after the mold is closed; Figure 6

[0041] ​Figure 8 is the present invention Figure 7 is a local enlarged view at B in the present invention

[0042] Figure 9 is the present invention Figure 6 is a sectional view at A-A after the injection mold is opened in the present invention

[0043] Figure 10 is the present invention Figure 9 is a local enlarged view at C in the present invention

[0044] Figure 11 is the present invention Figure 9 is a local enlarged view at D in the present invention

[0045] In the figure: 1, male die seat; 11, female die seat; 12, toy car model; 13, toy car groove; 14, convex plate; 15, round groove; 16, flow channel; 17, toy car shell; 18, plastic block; 19, plastic rod; 2, injection block; 21, rotating shaft; 22, mounting frame; 23, first spiral piece; 24, guide groove; 25, second spiral piece; 26, motor; 3, injection cylinder; 31, injection pipe; 32, first push plate; 33, slide; 34, slide cylinder; 35, second push plate; 4, missing groove; 41, horizontal plate; 42, vertical plate; 43, inclined groove; 44, inclined block; 45, clamping block; 451, arc-shaped plate; 46, fixing plate; 47, electric push rod. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, purposes and effects of the present invention easy to understand, the present invention is further described below in combination with specific embodiments.

[0047] As shown in Figures 1 to 11 , the injection mold for producing toy cars of the present invention comprises a male die seat 1 and a female die seat 11; the male die seat 1 is provided with a convex toy car model 12; the female die seat 11 is provided with a concave toy car groove 13;

[0048] The female die seat 11 is provided with an injection block 2 at the back; the injection block 2 is provided with a first through hole in the middle; the first through hole is rotatably provided with a rotating shaft 21;

[0049] The injection block 2 is provided with a motor 26 at the left side through a mounting frame 22, and the motor 26 is used to drive the rotating shaft 21;

[0050] The rotating shaft 21 is provided with a second through hole at the upper and lower sides; the two second through holes are rotatably provided with an injection cylinder 3, and the injection cylinder 3 extends into the toy car groove 13 and is in sliding connection with the female die seat 11; one side of the injection cylinder 3 extending into the toy car groove 13 is flush with the toy car die;

[0051] The injection molding block 2 is provided with two injection molding pipes 31 on the left side, and the injection molding pipes 31 extend into the injection molding barrels 3; the first push plate 32 is fixed on the side of the injection molding pipes 31 facing the rotating shaft 21; the first screw blade 23 is fixedly connected to the side of the first push plate 32 facing the rotating shaft 21, and the first screw blade 23 is inserted into the first push plate 32 and is in sliding connection with the first push plate 32;

[0052] The guide groove 24 is arranged between the injection molding barrel 3 and the rotating shaft 21, and the first push plate 32 slides in the guide groove 24, and the guide groove 24 penetrates the left end surface of the injection molding block 2;

[0053] The opposite sides of the two injection molding barrels 3 are provided with the missing grooves 4; the horizontal plates 41 are installed in the missing grooves 4; the two vertical plates 42 are fixedly connected to the sides of the two horizontal plates 41 facing the injection molding barrels 3; the inclined grooves 43 are arranged on the opposite end surfaces of the two vertical plates 42;

[0054] The inclined blocks 44 slide in the inclined grooves 43; the clamping blocks 45 are fixedly connected to the sides of the inclined blocks 44 facing the injection molding barrels 3; the sliding grooves 33 are arranged on the sides of the injection molding barrels 3 facing the clamping blocks 45, and the clamping blocks 45 extend into the injection molding barrels 3 through the sliding grooves 33.

[0055] In this embodiment, the toy car model 12 is fixedly connected with two convex plates 14 on the surface;

[0056] The two convex plates 14 are respectively arranged at the front and rear positions of the toy car model 12, and the convex blocks are attached to the toy car concave mold during mold closing, and the slots for installing the front and rear glass are formed on the outer shell 17 of the injection molded toy car;

[0057] The two convex plates 14 are provided with circular grooves 15 on the surfaces, and the circular grooves 15 correspond to the injection molding barrels 3 after mold closing; four flow channels 16 are arranged on the outer circle of the two circular grooves 15.

[0058] When the injection molding is performed, the male mold base 1 is controlled to gradually adhere to the female mold base 11, and a cavity is formed between the adhered male mold base 1 and the female mold base 11 and the toy car model 12 and the toy car female mold. Then, the injection pipe 31 is controlled to inject the molten material into the inside of the injection cylinder 3, and the material gradually enters the two injection cylinders 3. Since the injection cylinder 3 corresponds to the circular groove 15 on the cam plate 14 one by one, the material in the inside of the injection cylinder 3 enters the circular groove 15 first. Then, the material flows in the flow channel 16, thereby guiding the material to flow into the cavity more dispersedly. When the cavity is filled with the material, the injection pipe 31 is controlled to stop injecting the material. When the material cools down, the toy car shell 17 with the front and rear blocking groove holes is formed, and the material remaining in the injection cylinder 3, the circular groove 15 and the flow channel 16 is cooled down at the same time. When the material in the circular groove 15 and the flow channel 16 cools down, the cross-shaped plastic blocks 18 are formed, and the two cross-shaped plastic blocks 18 are fixed to the toy car shell 17 through eight points. When the material in the injection cylinder 3 and the circular groove 15 cools down, the plastic rod 19 is formed and is fixedly connected to the cross-shaped plastic blocks 18.

[0059] Since the clamping block 45 initially extends partially into the injection cylinder 3, the clamping block 45 is inserted into the plastic rod 19 solidified in the injection cylinder 3, thereby limiting and fixing the plastic rod 19 solidified in the injection cylinder 3;

[0060] Specifically, since the plastic rod 19 is fixed in the injection cylinder 3 by the clamping block 45, and the two cross-shaped plastic blocks 18 are fixed to the plastic rod 19, and the cross-shaped plastic blocks 18 are fixed to the toy car shell 17 in multiple directions, the toy car shell 17 can be fixed. When the mold is opened, the male mold base 1 gradually moves away from the female mold base 11, and the male mold base 1 gradually moves away from the toy car shell 17, and the toy car shell 17 is separated from the male mold base 1, so that the toy car shell 17 can be demolded without using a ejector pin, thereby avoiding the problem of white defects of the toy car shell 17 after the injection molding is completed.

[0061] More specifically, after the male mold base 1 moves away from the female mold base 11, the motor 26 controls the rotation of the rotating shaft 21, and the rotating rotating shaft 21 drives the first spiral plate 23 to rotate. Since the first spiral plate 23 is inserted into the first push plate 32 and is in sliding connection with the first push plate 32, the first push plate 32 is pushed to move rightward. The rightward moving first push plate 32 drives the injection cylinder 3 to move rightward in the second through hole and gradually extends into the toy car groove 13. At the same time, the injection cylinder 3 drives the clamping block 45 to move rightward, thereby driving the plastic rod 19 to move rightward. The rightward moving injection cylinder 3 and plastic rod 19 drive the cross-shaped plastic blocks 18 to move rightward, thereby driving the whole toy car shell 17 to separate from the female mold base 11.

[0062] Meanwhile, the inclined block 44 fixedly connected with the clamping block 45 slides in the inclined groove 43 during the right movement of the clamping block 45, and the clamping block 45 is gradually pulled out of the injection cylinder 3 during the sliding of the inclined block 44, and when the end of the clamping block 45 is pulled into the sliding channel 33, the clamping block 45 no longer blocks the plastic rod 19, so the worker can take the toy car shell 17 out of the recessed die seat 11, and controls the rotation shaft 21, the first spiral piece 23, the injection cylinder 3 and the clamping block 45 to return to the initial state, and then the next injection work can be carried out; after the toy car shell 17 is taken out, the cross-shaped plastic block 18 can be removed from the toy car shell 17 by cutting or separating process, and the separated plastic block 18 and plastic rod 19 can be reused after being crushed.

[0063] Therefore, the clamping block 45 is inserted into the solidified plastic rod 19, and the toy car shell 17 is fixed in multiple directions by the cross-shaped plastic block 18, so that the toy car shell 17 can be fixed as a whole, and when the mold is opened, the toy car shell 17 is gradually separated from the protruding die seat 1, so that the toy car shell 17 can be demolded without using the ejector pin, thereby eliminating the local excessive stress caused by the contact between the ejector pin and the toy car shell 17, avoiding the white defects caused by the micro deformation or molecular orientation change of the material, ensuring the consistency and aesthetics of the surface of the toy car shell 17, and preventing the safety hidden danger caused by the strength reduction of the white defect area, so that the toy car shell 17 is more durable during the children's play.

[0064] Meanwhile, the toy car shell 17 is fixed by two cross-shaped plastic blocks 18, and this multi-point and multi-directional fixing method can effectively disperse the pulling force received by the toy car when the mold is opened, so that the pulling force is uniformly distributed on multiple fixing points, avoiding local excessive stress, and the existing ejection or single part pulling method may cause deformation of the shell due to the concentration of pulling force, and the present method can uniformly distribute the pulling force on multiple fixing points, avoiding the concentration of pulling force on the toy car shell 17, and preventing the deformation of the toy car model 12.

[0065] As another embodiment of the present embodiment, two sliding cylinders 34 are slidably arranged in the left openings of the injection cylinders 3, and the sliding cylinders 34 partially extend into the injection cylinders 3; the injection pipe 31 is inserted into the sliding cylinder 34, and the right end is flush with the right end of the sliding cylinder 34; a second push plate 35 is fixed to one side of each of the sliding cylinders 34 towards the rotation shaft 21, and the second push plate 35 slides in the guide groove 24; a second spiral piece 25 is fixedly connected to the left half of the rotation shaft 21 on the left side of the first spiral piece 23, and the second spiral piece 25 is inserted into the second push plate 35 and slidably connected with the second push plate 35; the pitch of the second spiral piece 25 is greater than the pitch of the first spiral piece 23.

[0066] In the embodiment, the outer ring surface of the sliding cylinder 34 is fixed with a sealing ring, and the sealing ring is attached to the injection cylinder 3. The horizontal plate 41 slides in the missing groove 4.

[0067] The side of the horizontal plate 41 away from the injection cylinder 3 is provided with a fixed plate 46. The fixed plate 46 is provided with an electric push rod 47, and the extension rod of the electric push rod 47 is fixed on the horizontal plate 41.

[0068] Since the sliding cylinder 34 extends into the injection cylinder 3, when the toy car shell 17, the plastic rod 19, and the cross-shaped plastic block 18 are cooled and solidified, the electric push rod 47 is controlled to retract, thereby driving the horizontal plate 41 to gradually move away from the injection cylinder 3. At the same time, the horizontal plate 41 drives the vertical plate 42, the inclined block 44 sliding in the inclined groove 43, and the clamping block 45 fixedly connected to the inclined block 44 to gradually move away from the injection cylinder 3. When the end of the clamping block 45 moves to the inside of the slide 33, the motor 26 is controlled to rotate. The rotating motor 26 drives the rotating shaft 21 to rotate, and the rotating shaft 21 drives the first spiral piece 23 and the second spiral piece 25 to rotate. In the process of rotating the first spiral piece 23, the injection cylinder 3 and the solidified plastic rod 19 inside the injection cylinder 3 are driven to move to the right, and the toy car shell 17 is pushed to separate from the recessed die seat 11.

[0069] Since the second spiral piece 25 is inserted into the first push plate 32 and is in sliding connection with the second push plate 35, and the second push plate 35 is fixedly connected with the sliding cylinder 34, in the process of rotating the rotating shaft 21, the second spiral piece 25 is also driven to rotate, thereby driving the second push plate 35 and the sliding cylinder 34 to move to the right. Since the pitch of the second spiral piece 25 is greater than the pitch of the first spiral piece 23, the distance that the sliding cylinder 34 moves to the right is greater than the distance that the injection cylinder 3 moves to the right, so that the sliding cylinder 34 can gradually insert into the injection cylinder 3. In the process of inserting the sliding cylinder 34 into the injection cylinder 3, the plastic rod 19 located in the injection cylinder 3 is continuously moved to the right in the injection cylinder 3 on the basis of following the movement of the injection cylinder 3, thereby forcibly releasing the adhesion between the plastic rod 19 and the injection cylinder 3, separating the plastic rod 19 from the injection cylinder 3, and avoiding that the adhesion between the plastic rod 19 and the injection cylinder 3 is too strong, so that the plastic rod 19 cannot be pulled out of the injection cylinder 3 when the mold is opened, thereby affecting the subsequent injection process.

[0070] Since the sealing ring is arranged between the sliding cylinder 34 and the injection cylinder 3, the injection cylinder 3 and the sliding cylinder 34 can be sealed, thereby avoiding the leakage of materials. The inclined block 44 is a magnet. The vertical plate 42 is made of a metal material that is attracted by the magnet.

[0071] In the embodiment, the fixed plate 46 is bolted to the injection block 2. The mounting bracket 22 is also bolted to the injection block 2.

[0072] When the injection cylinder 3 has been used for a long time and material accumulates inside or needs to be replaced, the electric actuator 47 is retracted. The retracted electric actuator 47 will move the horizontal plate 41, the vertical plate, and the locking block 45 away from the injection cylinder 3. When the locking block 45 is completely removed from the injection cylinder 3, the electric actuator 47 stops retracting. Since the inclined block 44 is a magnet, it will be attracted to the vertical plate 42. Then, the bolts on the mounting bracket 22 are removed with a wrench. After the mounting bracket 22 is removed, the rotating shaft 21 can be pulled out from the first through hole. During the process of pulling out the rotating shaft 21, the first push plate 32 and the second push plate 35 will move, thereby pulling out the two injection cylinders 3 from the second through hole. Then, maintenance or replacement is performed. After maintenance or replacement is completed, the rotating shaft 21 and the injection cylinder 3 are inserted into the first through hole and the second through hole respectively, and the slide 33 is aligned with the locking block 45. Then, the electric actuator 47 is extended and the locking block 45 is inserted into the slide 33.

[0073] Specifically, when it is necessary to maintain or replace the locking block 45, the bolts on the fixing plate 46 are removed with a wrench, and the horizontal plate 41, the vertical plate 42 and the locking block 45 are taken out for maintenance or replacement.

[0074] As an embodiment of the present invention; an arc-shaped plate 451 is fixed on the surface of the card block 45; in the initial state, the arc-shaped plate 451 is in contact with the outer ring surface of the injection molding cylinder 3;

[0075] In this embodiment, the end face of the card block 45 that extends into the injection molding cylinder 3 is an arc surface, and the diameter of the arc surface is the same as the inner diameter of the injection molding cylinder 3.

[0076] Since the locking block 45 is fixed with an arc-shaped plate 451 that fits against the injection cylinder 3, the locking block 45 and the slide 33 can be sealed to prevent material from flowing out from the gap between the locking block 45 and the slide 33. Since the end face of the locking block 45 extending into the injection cylinder 3 is arc-shaped, when the locking block 45 moves into the slide 33, the arc-shaped surface will coincide with the inner ring surface of the injection cylinder 3, thus not hindering the movement of the plastic rod 19 inside the injection cylinder 3.

[0077] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0078] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations and modifications are intended to be included within the scope of the application as defined in the following claims and the equivalents thereof.

Claims

1. A toy car production injection mold, comprising a male die seat (1) and a female die seat (11); the male die seat (1) is provided with a raised toy car model (12); the female die seat (11) is provided with a recessed toy car groove (13); characterized in that The back of the female die seat (11) is provided with an injection block (2); the middle of the injection block (2) is provided with a first through hole; the first through hole is rotatably provided with a rotating shaft (21); The left side of the injection block (2) is provided with a motor (26) through a mounting frame (22); the upper and lower sides of the rotating shaft (21) are provided with a second through hole; the two second through holes are rotatably provided with an injection cylinder (3); The left side of the injection block (2) is provided with two injection tubes (31); the side of the injection tube (31) facing the rotating shaft (21) is fixedly provided with a first push plate (32); the side of the first push plate (32) facing the rotating shaft (21) is fixedly connected with a first helical blade (23) on the right half of the rotating shaft (21), and the first helical blade (23) is inserted into the first push plate (32) and is in sliding connection with the first push plate (32); A guide groove (24) is formed between the injection cylinder (3) and the rotating shaft (21); The opposite sides of the two injection cylinders (3) are provided with a missing slot (4); the missing slot (4) is provided with a horizontal plate (41); the side of the two horizontal plates (41) facing the injection cylinder (3) is fixedly connected with two vertical plates (42); the opposite side end faces of the two vertical plates (42) are provided with an inclined slot (43); The inclined slot (43) is slidably provided with an inclined block (44); the side of the inclined block (44) facing the injection cylinder (3) is fixedly connected with a clamping block (45); the side of the injection cylinder (3) facing the clamping block (45) is provided with a slide (33), and the clamping block (45) extends into the injection cylinder (3) through the slide (33).

2. The injection mold for a toy vehicle according to claim 1, characterized in that: The surface of the toy car model (12) is fixedly connected with two protruding plates (14); The two protruding plates (14) are respectively located at the front and rear positions of the toy car model (12), the protruding block is attached to the toy car female die during clamping, and the injection-molded toy car shell (17) has a slot hole for installing the front and rear glass; The surface of the two protruding plates (14) is provided with a circular groove (15), and the circular groove (15) corresponds to the injection cylinder (3) after clamping; the outer circle of the two circular grooves (15) is provided with four flow channels (16).

3. The injection mold for a toy vehicle production according to claim 1, characterized in that: The left side of the two injection cylinders (3) is slidably provided with a slide cylinder (34), and the slide cylinder (34) partially extends into the injection cylinder (3); The injection tube (31) is inserted into the slide cylinder (34), and the right end is flush with the right end of the slide cylinder (34); the side of the two slide cylinders (34) facing the rotating shaft (21) is fixedly provided with a second push plate (35), and the second push plate (35) slides in the guide groove (24); The left side of the first helical blade (23) is fixedly connected with a second helical blade (25) on the left half of the rotating shaft (21), and the second helical blade (25) is inserted into the second push plate (35) and is in sliding connection with the second push plate (35); The pitch of the second helical blade (25) is greater than the pitch of the first helical blade (23).

4. The injection mold for a toy vehicle production according to claim 3, characterized in that: The outer ring surface of the sliding cylinder (34) is fixed with a sealing ring, and the sealing ring is attached to the injection cylinder (3).

5. The injection mold for producing a toy vehicle according to claim 4, characterized in that: The horizontal plate (41) slides in the slot (4); The side of the horizontal plate (41) away from the injection cylinder (3) is provided with a fixed plate (46); the fixed plate (46) is provided with an electric push rod (47), and the extension rod of the electric push rod (47) is fixed on the horizontal plate (41).

6. The injection mold for a toy vehicle production according to claim 1, characterized in that: The inclined block (44) is a magnet; and the vertical plate (42) is made of a metal material attracted by the magnet.

7. The injection mold for producing a toy vehicle according to claim 6, characterized in that: The fixed plate (46) is bolted on the injection block (2); The mounting frame (22) is also bolted on the injection block (2).

8. The injection mold for producing a toy vehicle according to claim 1, characterized in that: The surface of the clamping block (45) is fixed with an arc-shaped plate (451); and in the initial state, the arc-shaped plate (451) is attached to the outer ring surface of the injection cylinder (3).

9. The injection mold for producing a toy vehicle according to claim 8, characterized in that: The side end surface of the clamping block (45) extending into the interior of the injection cylinder (3) is an arc surface, and the diameter of the arc surface is the same as the inner ring diameter of the injection cylinder (3).

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