Double-color toy injection mold with automatic ejection function

Abstract

The utility model discloses an automatic ejection double-color toy injection mold, which relates to the technical field of double-color injection molds and comprises an operation table, a rotary table is rotatably arranged at the top of the operation table, a rotating part for driving the rotary table to rotate is arranged on the operation table, and two groups of injection molds are arranged at the top of the rotary table. The two sets of injection molds are symmetrically arranged along the center position of the rotary table, an injection cavity is formed in each injection mold, an ejection assembly is arranged in each injection cavity and comprises an ejection plate used for ejecting a formed workpiece out and a driving part used for driving the ejection plate to move, and when injection molding is completed, a first motor is started, and a second motor is started; the two-way lead screw is driven to rotate, the two moving blocks are driven to move at the same time, the moving blocks drive one end of the hinged plate to move, the hinged plate moves to drive the top plate to move upwards, and a workpiece is ejected out of an injection molding cavity along with vertical upward movement of the top plate, so that workers can take out the workpiece conveniently, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-color injection molds, in particular to an automatic ejection double-color toy injection mold. Background Art

[0002] Two-color toy injection mold is an advanced mold technology in the toy manufacturing industry. It can combine two different colors of plastic materials into one through two injection molding processes on the same injection molding machine, thereby producing toy products with two-color or multi-color effects. The basic principle of two-color injection molding is to use the rotation of the mold and the two nozzles of the injection molding machine. After the first injection, the mold is rotated 180 degrees (or other forms of adjustment are made, such as core retreat, push plate rotation, etc.), and then the second injection is performed. In this way, two different colors of plastic can be combined in one molding process to form a two-color or multi-color effect.

[0003] The patent document with Chinese patent authorization announcement number CN222495205U discloses an automatic ejection two-color injection mold, including an operating table, a turntable, a two-color injection molding device and an injection mold; a driving motor drives a driving wheel fixed at its output end to rotate, and the driving wheel drives the other three driven wheels to rotate synchronously through a chain, and the screws fixed on the top surfaces of the driving wheel and the driven wheel follow the rotation, so that the inner threaded sliding rod connected to the surface moves upward inside the slide groove, and the rubber block fixed on the top of the inner threaded sliding rod protrudes from the slide groove, so that the workpiece molded on the surface of the injection mold is ejected by the rubber block, thereby achieving the effect of avoiding damage to the workpiece due to incorrect operation when manually removing the workpiece, and avoiding the low efficiency of manually removing the workpiece, which affects the injection molding processing efficiency of the two-color injection molding device.

[0004] When the above technical solution ejects the molded workpiece, since the driving motor drives the active wheel to rotate, the active wheel drives the other three driven wheels to rotate synchronously through the chain, and the rotation of the active wheel and the driven wheel drives the inner thread slide rod to move upward inside the slide groove, and the injection molded workpiece is ejected through the rubber block on the top. During the ejection process, it cannot be guaranteed that the workpiece is subjected to uniform force during ejection, thereby increasing the possibility of partial adhesion of the workpiece to the injection molding cavity, resulting in affecting the appearance and quality of the workpiece. Utility Model Content

[0005] In view of the above problems, a two-color toy injection mold with automatic ejection is provided. By using an ejector plate for ejecting the molded workpiece and a driving component for driving the ejector plate to move, the technical problem that part of the workpiece may adhere to the injection cavity and affect the appearance and quality of the workpiece is solved.

[0006] To solve the problems of the prior art, the utility model provides an automatic ejection two-color toy injection mold, comprising an operating table, a turntable is rotatably arranged on the top of the operating table, a rotating component for driving the turntable to rotate is arranged on the operating table, two groups of injection molds are arranged on the top of the turntable, and the two groups of injection molds are symmetrically arranged along the center position of the turntable, an injection cavity is arranged in the injection mold, an ejection assembly is arranged in the injection cavity, the ejection assembly includes a top plate for ejecting a molded workpiece and a driving component for driving the top plate to move, and a cooling assembly for accelerating the cooling speed of the workpiece is arranged on one side of the injection mold.

[0007] Preferably, the driving component includes a bidirectional screw, a first motor and an articulated seat; the top plate is arranged in the injection cavity, a cavity is opened at the bottom of the injection cavity of the injection mold, and the bidirectional screw is horizontally arranged in the cavity; the first motor is arranged on one side of the injection mold, the output end of the first motor is connected to one end of the bidirectional screw, a moving block is threadedly connected to the bidirectional screw, and the top of the moving block is hinged with a hinge plate; the articulated seat is arranged at the bottom of the top plate, and the articulated seat is hinged to one end of the hinge plate.

[0008] Preferably, a sliding rod is horizontally arranged at the bottom of the bidirectional screw rod in the cavity, a sliding block is slidably arranged on the sliding rod, and the top of the sliding block is connected to the bottom of the moving block.

[0009] Preferably, the cooling assembly includes a cooling box and a cooling pipe; the cooling box is arranged on one side of the injection mold; a liquid storage tank is arranged in the cooling box, a water outlet is arranged on one side of the cooling box, and a water inlet is arranged on the other side of the cooling box; a water pump is arranged at the water outlet; the cooling pipe is sleeved on the outer wall of the injection cavity, one end of the cooling pipe is connected to the water outlet, and the other end of the cooling pipe is connected to the water inlet.

[0010] Preferably, a fan is provided on the top of the cooling box.

[0011] Preferably, the rotating component includes a first gear and an extension plate; the first gear is sleeved on the turntable; the extension plate is arranged on one side of the operating table, a second motor is arranged at the bottom of the extension plate, a second gear is arranged at the output end of the second motor, and the second gear is meshed with the first gear.

[0012] Preferably, a rubber anti-slip pad is provided at the bottom of the operating table.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When the injection molding is completed and the workpiece is cooled and solidified, the first motor starts to drive the bidirectional screw to rotate. Due to the thread design of the bidirectional screw, the two moving blocks will be driven to move at the same time. The movement of the moving block drives one end of the hinged plate to move. Since the other end of the hinged plate is hinged to the hinged seat, and the hinged seat is fixed to the bottom of the top plate, the movement of the hinged plate will be converted into the vertical upward movement of the top plate. As the top plate moves vertically upward, the top plate contacts the workpiece and ejects the workpiece from the injection cavity. The ejection process is smooth and uniform, avoiding the problem of damage to the workpiece or adhesion to the mold, making it easy for the staff to take it out and improving work efficiency.

[0015] 2. When the injection mold starts injection molding, the water pump starts and the coolant in the liquid storage tank enters the cooling pipe through the water outlet. The coolant flows in the cooling pipe and fits closely to the outer wall of the injection cavity, absorbing the heat generated during the injection molding process. After heat exchange, the coolant temperature rises and flows back to the water inlet of the cooling box from the other end of the cooling pipe, thereby cooling the workpiece and improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a two-color toy injection mold with automatic ejection Figure 1 ;

[0017] Figure 2 A three-dimensional diagram of a two-color toy injection mold with automatic ejection Figure 2 ;

[0018] Figure 3 It is a cross-sectional view of an injection mold in a two-color toy injection mold with automatic ejection from a side view;

[0019] Figure 4 It is a cross-sectional view of an injection mold and a cooling box in a two-color toy injection mold with automatic ejection from a side view;

[0020] Figure 5 It is a three-dimensional diagram of the injection mold and cooling box in a two-color toy injection mold with automatic ejection.

[0021] The numbers in the figure are: 1. operating table; 2. turntable; 21. first gear; 22. extension plate; 23. second motor; 24. second gear; 3. injection mold; 4. ejector assembly; 41. ejector plate; 42. bidirectional screw rod; 43. first motor; 44. moving block; 45. hinged plate; 46. hinged seat; 47. slide rod; 48. slide block; 5. cooling assembly; 51. cooling box; 52. liquid storage tank; 53. cooling pipe; 54. water pump; 55. fan. DETAILED DESCRIPTION

[0022] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] See also Figures 1 to 5 As shown, the utility model provides an automatic ejection two-color toy injection mold, including an operating table 1, a turntable 2 is rotatably arranged on the top of the operating table 1, a rotating component for driving the turntable 2 to rotate is arranged on the operating table 1, two groups of injection molds 3 are arranged on the top of the turntable 2, the two groups of injection molds 3 are symmetrically arranged along the center position of the turntable 2, an injection cavity is arranged in the injection mold 3, an ejection assembly 4 is arranged in the injection cavity, the ejection assembly 4 includes a top plate 41 for ejecting a molded workpiece and a driving component for driving the top plate 41 to move, and a cooling assembly 5 for accelerating the cooling speed of the workpiece is arranged on one side of the injection mold 3.

[0024] The mold clamping device of the injection molding machine pushes the movable mold toward the fixed mold until the movable mold and the fixed mold are tightly closed to form a closed cavity, and the plastic raw materials are respectively injected into the injection cavities of the two injection molds 3, and the cooling and solidification of the workpiece are accelerated by the setting of the cooling component 5. When the workpiece is cooled and solidified, the driving component of the ejection component 4 is started to drive the top plate 41 to move upward in the injection cavity. The top plate 41 contacts the workpiece and ejects it from the injection cavity, which is convenient for the staff to remove and improves work efficiency.

[0025] See also Figures 1 to 3 As shown, the driving components include a bidirectional screw 42, a first motor 43 and a hinge seat 46; the top plate 41 is arranged in the injection cavity, a cavity is opened at the bottom of the injection cavity of the injection mold 3, and the bidirectional screw 42 is horizontally arranged in the cavity; the first motor 43 is arranged on one side of the injection mold 3, and the output end of the first motor 43 is connected to one end of the bidirectional screw 42, and a moving block 44 is threadedly connected to the bidirectional screw 42, and a hinge plate 45 is hinged on the top of the moving block 44; the hinge seat 46 is arranged at the bottom of the top plate 41, and the hinge seat 46 is hinged to one end of the hinge plate 45.

[0026] When the injection molding is completed and the workpiece is cooled and solidified, the first motor 43 is started. The output end of the first motor 43 drives the bidirectional screw 42 to rotate. Due to the thread design of the bidirectional screw 42, the two moving blocks 44 are driven to move at the same time. The movement of the moving block 44 drives one end of the hinged plate 45 to move. Since the other end of the hinged plate 45 is hinged to the hinge seat 46, and the hinge seat 46 is fixed to the bottom of the top plate 41, the movement of the hinged plate 45 will be converted into a vertical upward movement of the top plate 41. As the top plate 41 moves vertically upward, the top plate 41 contacts the workpiece and ejects the workpiece from the injection cavity. The ejection process is smooth and uniform, avoiding the problem of damage to the workpiece or adhesion to the mold, making it convenient for the staff to remove it and improving work efficiency.

[0027] See also Figure 3 As shown, a slide bar 47 is horizontally arranged at the bottom of the bidirectional screw rod 42 in the cavity, a slider 48 is slidably arranged on the slide bar 47 , and the top of the slider 48 is connected to the bottom of the moving block 44 .

[0028] When the bidirectional lead screw 42 rotates to drive the two moving blocks 44 to move simultaneously, the moving blocks 44 will slide on the sliding rod 47 through the slider 48 at the bottom, thereby improving the stability of the movement of the moving blocks 44.

[0029] See also Figure 4 and Figure 5 As shown, the cooling assembly 5 includes a cooling box 51 and a cooling pipe 53; the cooling box 51 is arranged on one side of the injection mold 3; a liquid storage tank 52 is arranged in the cooling box 51, a water outlet is arranged on one side of the cooling box 51, and a water inlet is arranged on the other side of the cooling box 51; a water pump 54 is arranged at the water outlet; the cooling pipe 53 is sleeved on the outer wall of the injection cavity, one end of the cooling pipe 53 is connected to the water outlet, and the other end of the cooling pipe 53 is connected to the water inlet.

[0030] When the injection mold 3 starts injection molding, the water pump 54 is started to pump the coolant in the liquid storage tank 52 into the cooling pipe 53 through the water outlet. The coolant flows in the cooling pipe 53 and closely adheres to the outer wall of the injection cavity to absorb the heat generated during the injection molding process. After heat exchange, the coolant temperature rises and flows back to the water inlet of the cooling box 51 from the other end of the cooling pipe 53, thereby cooling the workpiece and improving the cooling efficiency.

[0031] See also Figure 5 As shown, a fan 55 is provided on the top of the cooling box 51 .

[0032] When the coolant flows back to the cooling box 51 after heat exchange, the fan 55 is set to cool the coolant after heat exchange, thereby ensuring that the coolant can continuously and effectively absorb the heat generated by the injection mold 3 during the injection process.

[0033] See also Figure 1 and Figure 2 As shown, the rotating component includes a first gear 21 and an extension plate 22; the first gear 21 is sleeved on the turntable 2; the extension plate 22 is arranged on one side of the operating table 1, and a second motor 23 is arranged at the bottom of the extension plate 22, and a second gear 24 is arranged at the output end of the second motor 23, and the second gear 24 is meshed with the first gear 21.

[0034] When the turntable 2 needs to be rotated, the second motor 23 is first started to rotate the second gear 24. Since the second gear 24 is meshed with the first gear 21, the rotation of the second gear 24 will drive the first gear 21 to rotate synchronously, thereby driving the turntable 2 to rotate synchronously, which is convenient for two-color injection molding.

[0035] See also Figure 4 As shown, a rubber anti-skid pad is provided at the bottom of the operating table 1.

[0036] The rubber anti-skid pad at the bottom of the operating table 1 increases the friction with the contact surface, and the rubber material absorbs part of the impact force generated by the work, thereby reducing the shaking of the operating table 1.

[0037] Working principle: The movable mold is pushed toward the fixed mold by the mold clamping device of the injection molding machine until the movable mold and the fixed mold are tightly closed to form a closed cavity, and the plastic raw materials are respectively injected into the injection cavities of the two groups of injection molds 3. When the injection mold 3 starts injection molding, the water pump 54 is started to pass the coolant in the liquid storage tank 52 into the cooling pipe 53 through the water outlet. The coolant flows in the cooling pipe 53 and fits tightly to the outer wall of the injection cavity to absorb the heat generated during the injection molding process. After heat exchange, the temperature of the coolant rises and flows back to the water inlet of the cooling box 51 from the other end of the cooling pipe 53, thereby cooling the workpiece and improving the cooling efficiency. When the injection molding is completed and the workpiece is cooled and solidified, the first motor 43 is started. The output end of the first motor 43 drives the bidirectional screw 42 to rotate. Due to the thread design of the bidirectional screw 42, the two moving blocks 44 will be driven to move simultaneously. The movement of the moving block 44 drives one end of the hinged plate 45 to move. Since the other end of the hinged plate 45 is hinged to the hinged seat 46, and the hinged seat 46 is fixed to the bottom of the top plate 41, the movement of the hinged plate 45 is converted into the vertical upward movement of the top plate 41. As the top plate 41 moves vertically upward, the top plate 41 contacts the workpiece and ejects the workpiece from the injection cavity. The ejection process is smooth and uniform, avoiding the problem of damage to the workpiece or adhesion to the mold, making it easier for the staff to remove the workpiece and improving work efficiency.

[0038] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. An automatic ejection two-color toy injection mold, characterized in that: The invention comprises an operating table (1), wherein a turntable (2) is rotatably arranged on the top of the operating table (1), a rotating component for driving the turntable (2) to rotate is arranged on the operating table (1), two groups of injection molds (3) are arranged on the top of the turntable (2), the two groups of injection molds (3) are symmetrically arranged along the center position of the turntable (2), an injection cavity is arranged in the injection mold (3), an ejection assembly (4) is arranged in the injection cavity, the ejection assembly (4) comprises a top plate (41) for ejecting a molded workpiece and a driving component for driving the top plate (41) to move, and a cooling assembly (5) for accelerating the cooling speed of the workpiece is arranged on one side of the injection mold (3); the driving component comprises The invention comprises a bidirectional screw rod (42), a first motor (43) and a hinge seat (46); the top plate (41) is arranged in the injection cavity, a cavity is opened at the bottom of the injection cavity of the injection mold (3), and the bidirectional screw rod (42) is horizontally arranged in the cavity; the first motor (43) is arranged on one side of the injection mold (3), the output end of the first motor (43) is connected to one end of the bidirectional screw rod (42), a moving block (44) is threadedly connected to the bidirectional screw rod (42), and the top of the moving block (44) is hinged to a hinge plate (45); the hinge seat (46) is arranged at the bottom of the top plate (41), and the hinge seat (46) is hinged to one end of the hinge plate (45).

2. The automatic ejection two-color toy injection mold according to claim 1, characterized in that: A sliding rod (47) is horizontally arranged at the bottom of the bidirectional screw rod (42) in the cavity, a sliding block (48) is slidably arranged on the sliding rod (47), and the top of the sliding block (48) is connected to the bottom of the moving block (44).

3. The automatic ejection two-color toy injection mold according to claim 1, characterized in that: The cooling assembly (5) comprises a cooling box (51) and a cooling pipe (53); the cooling box (51) is arranged on one side of the injection mold (3); a liquid storage box (52) is arranged inside the cooling box (51); a water outlet is arranged on one side of the cooling box (51); a water inlet is arranged on the other side of the cooling box (51); a water pump (54) is arranged at the water outlet; the cooling pipe (53) is sleeved on the outer wall of the injection cavity, one end of the cooling pipe (53) is connected to the water outlet, and the other end of the cooling pipe (53) is connected to the water inlet.

4. The automatic ejection two-color toy injection mold according to claim 3, characterized in that: A fan (55) is provided on the top of the cooling box (51).

5. The automatic ejection two-color toy injection mold according to claim 1, characterized in that: The rotating component comprises a first gear (21) and an extension plate (22); the first gear (21) is sleeved on the turntable (2); the extension plate (22) is arranged on one side of the operating table (1); a second motor (23) is arranged at the bottom of the extension plate (22); a second gear (24) is arranged at the output end of the second motor (23); and the second gear (24) is meshed with the first gear (21).

6. The automatic ejection two-color toy injection mold according to claim 1, characterized in that: A rubber anti-slip pad is provided at the bottom of the operating table (1).

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