Injection mold with quantitative injection molding function

Abstract

The utility model discloses an injection mold with a quantitative injection molding function, which is applied to the field of injection molds and comprises a bottom mold, a top mold is arranged at the top of the bottom mold, and an injection molding channel is arranged on the inner wall of the top mold; the motor rotates to drive the crankshaft to rotate, so that the piston reciprocates in the injection molding pipe, the reciprocating motion of the piston is matched with the one-way valve to enable injection molding liquid to enter a mold, and as the one-time injection molding amount of the reciprocating motion of the piston is certain, the number of rotation turns of the motor can be controlled through the controller, so that the reciprocating frequency of the piston is controlled; the second motor rotates to drive the screw rod to rotate, so that the L-shaped rod drives the lifting rod to ascend, the lifting rod ascends to drive the demolding plate to ascend, and the demolding plate ejects a product out of the bottom mold, so that the aim of facilitating demolding can be achieved, the workload is reduced, and the production efficiency is improved. And the installation performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to an injection mold with quantitative injection function. Background Technology

[0002] A search of Chinese patents revealed publication number CN214239260U, which discloses an injection mold. The injection mold includes an injection cavity with a small part placement area. The injection mold also includes a placeholder, a return pin, and an ejector. The placeholder is slidably disposed within the injection mold to occupy a portion of the injection cavity space before mold closing, preventing mis-installation of the small part. The return pin is slidably disposed within the injection mold to drive the placeholder out of the injection cavity during mold closing. The ejector is used to drive the placeholder out of the injection cavity during mold opening. In this injection mold, the placeholder, slidably disposed within the injection mold, occupies a portion of the injection cavity space before mold closing and exits the injection cavity after mold closing, effectively preventing mis-installation of small parts.

[0003] Existing injection molds lack quantitative injection capabilities. Generally, injection molds rely on injection pumps, requiring manual control of the pump's operating time and injection volume. This makes it difficult to guarantee injection precision; over-injection leads to waste, while under-injection affects product quality, hinders use, and makes demolding difficult. Furthermore, quickly separating the molded product from the mold after injection is cumbersome, often requiring manual pulling, which can damage the product. Insufficient mold cooling can also cause burns, posing a safety hazard. To address these issues, we propose an injection mold with quantitative injection capabilities. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold with quantitative injection function, which has the advantages of quantitative injection function and easy demolding.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an injection mold with quantitative injection function, including a bottom mold, a top mold provided at the top of the bottom mold, an injection channel opened in the inner wall of the top mold, an injection tube bolted to the top of the bottom mold, a one-way valve connected to both the top and bottom of the injection tube, and the bottom one-way valve connected to the injection channel, a first motor bolted to the surface of the injection tube, the output end of the first motor extending into the interior of the injection tube and connected to a crankshaft via a coupling, and the crankshaft rotatably connected to the inner wall of the injection tube, a rotating cylinder rotatably sleeved on the surface of the crankshaft, a transmission rod bolted to the surface of the rotating cylinder, a piston hinged to the other end of the transmission rod, and the piston slidably sleeved with the inner wall of the injection tube, a controller bolted to the surface of the injection tube, and the controller electrically connected to the first motor.

[0006] By adopting the above technical solution, the rotation of the motor drives the crankshaft to rotate, causing the piston to reciprocate in the injection tube. The reciprocating movement of the piston, in conjunction with the one-way valve, allows the injection liquid to enter the mold. Since the amount of injection per piston reciprocating movement is fixed, the number of rotations of the motor can be controlled by the controller to control the number of piston reciprocations, thereby achieving the purpose of quantitative injection, ensuring the injection accuracy, and improving practicality.

[0007] The present invention is further configured such that: a second motor is bolted to the surface of the bottom mold; the output end of the second motor extends into the interior of the bottom mold and is connected to a screw via a coupling; the other end of the screw is rotatably connected to the inner wall of the bottom mold; a sliding plate is threaded onto the surface of the screw; a fixing plate is bolted to the top of the sliding plate; an L-shaped rod is rotatably connected to the inner wall of the bottom mold; a lifting rod is slidably sleeved onto the inner wall of the bottom mold; both the fixing plate and the L-shaped rod have strip-shaped holes on their surfaces; a sliding rod is provided through the inner wall of the strip-shaped holes; and the sliding rod is bolted to the surface of the L-shaped rod and the surface of the lifting rod, respectively; and a release plate is bolted to the top of the lifting rod.

[0008] By adopting the above technical solution, the rotation of the second motor drives the screw to rotate, which in turn causes the L-shaped rod to lift the lifting rod. The lifting rod then lifts the demolding template, which in turn pushes the product out of the bottom mold. This method facilitates demolding, reduces workload, and improves installation.

[0009] The present invention is further configured such that: a slider is bolted to the surface of the slide plate, and a groove is slidably connected to the surface of the slider, and the groove is formed on the inner wall of the bottom mold.

[0010] By adopting the above technical solution, sliders and grooves are set to prevent the slide plate from deviating and ensure stability.

[0011] The present invention is further configured such that: a cooling pipe is provided on the inner wall of the bottom mold, and both ends of the cooling pipe are connected to water pipe joints.

[0012] By adopting the above technical solution, cooling and temperature reduction can be facilitated by setting up cooling pipes and water pipe joints.

[0013] The present invention is further configured such that: the surfaces of the bottom mold and the injection molding tube are both bolted with protective shells, and the first motor and the second motor are both located inside the protective shells.

[0014] By adopting the above technical solution, the first motor and the second motor are protected by setting up a protective shell.

[0015] The present invention is further configured such that a sealing gasket is embedded in the surface of the bottom mold.

[0016] By adopting the above technical solution, the sealing performance is improved by setting a sealing gasket.

[0017] The present invention is further configured such that: a quick connector is bolted to the surface of the injection-molded tube, and the quick connector is connected to a one-way valve.

[0018] By adopting the above technical solution and setting up quick connectors, it is easy to connect with injection molding pipes.

[0019] The present invention is further configured such that mounting holes are provided on the surfaces of both the bottom mold and the top mold.

[0020] The above technical solution facilitates installation by providing mounting holes.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model uses a motor to drive a crankshaft to rotate, causing a piston to reciprocate in the injection tube. The reciprocating movement of the piston, in conjunction with a one-way valve, allows the injection liquid to enter the mold. Since the amount of injection per piston reciprocating movement is fixed, the number of rotations of the motor can be controlled by a controller to control the number of piston reciprocations, thereby achieving quantitative injection, ensuring injection accuracy, and improving practicality.

[0023] 2. This utility model uses a second motor to drive a screw to rotate, which in turn causes an L-shaped rod to lift a lifting rod. The lifting rod then lifts the demolding template, which in turn ejects the product from the bottom mold. This method facilitates demolding, reduces workload, and improves installation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a top sectional view of the bottom mold structure of this utility model;

[0027] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0028] Reference numerals: 1. Bottom mold; 2. Top mold; 3. Injection channel; 4. Injection tube; 5. One-way valve; 6. First motor; 7. Crankshaft; 8. Rotating cylinder; 9. Transmission rod; 10. Piston; 11. Controller; 12. Second motor; 13. Screw; 14. Slide plate; 15. Fixing plate; 16. L-shaped rod; 17. Lifting rod; 18. Strip hole; 19. Slide rod; 20. Release plate; 21. Slider; 22. Slide groove; 23. Cooling pipe; 24. Water pipe connector; 25. Protective shell; 26. Sealing gasket; 27. Quick connector; 28. Mounting hole. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] refer to Figure 1 , Figure 2 and Figure 4 An injection mold with quantitative injection function includes a bottom mold 1, a top mold 2 at the top of the bottom mold 1, an injection channel 3 on the inner wall of the top mold 2, an injection tube 4 bolted to the top of the bottom mold 1, one-way valves 5 connected to both the top and bottom of the injection tube 4, and the bottom one-way valve 5 connected to the injection channel 3, a first motor 6 bolted to the surface of the injection tube 4, the output end of the first motor 6 extending into the interior of the injection tube 4 and connected to a crankshaft 7 via a coupling, the crankshaft 7 being rotatably connected to the inner wall of the injection tube 4, a rotating cylinder 8 rotatably sleeved on the surface of the crankshaft 7, and a transmission rod 9 bolted to the surface of the rotating cylinder 8. The other end of the transmission rod 9 is hinged to a piston 10, which slides against the inner wall of the injection tube 4. A controller 11 is bolted to the surface of the injection tube 4 and is electrically connected to the first motor 6. The motor rotates, driving the crankshaft 7 to rotate, causing the piston 10 to reciprocate in the injection tube 4. The reciprocating movement of the piston 10, in conjunction with the one-way valve 5, allows the injection liquid to enter the mold. Since the amount of injection per reciprocating movement of the piston 10 is constant, the number of rotations of the motor can be controlled by the controller 11 to control the number of reciprocations of the piston 10, thereby achieving quantitative injection, ensuring injection accuracy, and improving practicality.

[0032] refer to Figure 2 The inner wall of the bottom mold 1 is provided with a cooling pipe 23, and both ends of the cooling pipe 23 are connected to water pipe joints 24. By setting the cooling pipe 23 and the water pipe joints 24, it is convenient to cool down.

[0033] refer to Figure 2The bottom mold 1 has a sealing gasket 26 embedded in its surface. By setting the sealing gasket 26, the sealing performance is improved.

[0034] refer to Figure 1 and Figure 2 A quick connector 27 is bolted to the surface of the injection tube 4, and the quick connector 27 is connected to the one-way valve 5. By setting the quick connector 27, it is easy to connect to the injection tube 4.

[0035] Example 2:

[0036] refer to Figure 1 , Figure 2 and Figure 3 A second motor 12 is bolted to the surface of the bottom mold 1. The output end of the second motor 12 extends into the interior of the bottom mold 1 and is connected to a screw 13 via a coupling. The other end of the screw 13 is rotatably connected to the inner wall of the bottom mold 1. A sliding plate 14 is threaded onto the surface of the screw 13. A fixing plate 15 is bolted to the top of the sliding plate 14. An L-shaped rod 16 is rotatably connected to the inner wall of the bottom mold 1. A lifting rod 17 is slidably sleeved onto the inner wall of the bottom mold 1. Both the fixing plate 15 and the L-shaped rod 16 have slotted holes 18. A sliding rod 19 is provided through the inner wall of the slotted hole 18. The sliding rod 19 is bolted to the surface of the L-shaped rod 16 and the surface of the lifting rod 17, respectively. A demolding template 20 is bolted to the top of the lifting rod 17. The rotation of the second motor 12 drives the screw 13 to rotate, causing the L-shaped rod 16 to lift the lifting rod 17. The lifting rod 17 lifts the demolding template 20, which ejects the product from the bottom mold 1. This method facilitates demolding, reduces workload, and improves installation.

[0037] refer to Figure 3 A slider 21 is bolted to the surface of the slide plate 14. A groove 22 is slidably connected to the surface of the slider 21, and the groove 22 is opened on the inner wall of the bottom mold 1. By setting the slider 21 and the groove 22, the slide plate 14 is prevented from shifting and stability is ensured.

[0038] refer to Figure 1 , Figure 2 and Figure 3 The bottom mold 1 and the injection tube 4 are both bolted with protective shells 25, and the first motor 6 and the second motor 12 are both located inside the protective shells 25. By setting the protective shells 25, the first motor 6 and the second motor 12 are protected.

[0039] refer to Figure 1 , Figure 2 and Figure 3 Both the bottom mold 1 and the top mold 2 have mounting holes 28 on their surfaces, which facilitates installation.

[0040] Brief description of the operation: The first motor 6 rotates, driving the crankshaft 7 to rotate. The crankshaft 7 rotates, driving the rotating cylinder 8 to rotate. The rotating cylinder 8 rotates, driving the transmission rod 9 to reciprocate the piston 10. When the piston 10 moves to the right, it creates a negative pressure in the injection tube 4, drawing the injection liquid into the injection tube 4 through the one-way valve 5 at the top. When the piston 10 moves to the left, it increases the pressure in the injection tube 4, discharging the injection liquid from the one-way valve 5 at the bottom into the injection channel 3 for injection. The amount of injection by the reciprocating movement of the piston 10 is constant. The controller 11 controls the number of rotations of the first motor 6, thereby controlling the number of reciprocating movements of the piston 10, allowing for adjustable quantitative injection. The amount of plastic is adjusted to achieve quantitative injection molding; the second motor 12 rotates, driving the screw 13 to rotate, the screw 13 rotates, driving the slide plate 14 to move, the slide plate 14 moves, driving the fixed plate 15 to move, the fixed plate 15 moves, driving the bottom strip hole 18 to move, causing the bottom slide rod 19 to move, the bottom slide rod 19 moves, driving the L-shaped rod 16 to rotate, the L-shaped rod 16 rotates, driving the top strip hole 18 to rotate, the top strip hole 18 rotates, driving the top slide rod 19 to move, the top slide rod 19 moves, driving the lifting rod 17 to move, the lifting rod 17 moves, driving the demolding template 20 to move, ejecting the product from the bottom mold 1, thereby facilitating demolding.

[0041] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An injection mold with quantitative injection function, comprising a bottom mold (1), characterized in that, The bottom mold (1) has a top mold (2) at its top. The inner wall of the top mold (2) has an injection channel (3). An injection tube (4) is bolted to the top of the bottom mold (1). One-way valves (5) are connected to both the top and bottom of the injection tube (4), and the bottom one-way valve (5) is connected to the injection channel (3). A first motor (6) is bolted to the surface of the injection tube (4). The output end of the first motor (6) extends into the interior of the injection tube (4) and is connected to the injection channel (3). A crankshaft (7) is connected to the shaft assembly, and the crankshaft (7) is rotatably connected to the inner wall of the injection tube (4). A rotating cylinder (8) is rotatably sleeved on the surface of the crankshaft (7). A transmission rod (9) is bolted to the surface of the rotating cylinder (8). A piston (10) is hinged to the other end of the transmission rod (9), and the piston (10) is slidably sleeved to the inner wall of the injection tube (4). A controller (11) is bolted to the surface of the injection tube (4), and the controller (11) is electrically connected to the first motor (6).

2. The injection mold with quantitative injection function according to claim 1, characterized in that, The surface of the bottom mold (1) is bolted with a second motor (12). The output end of the second motor (12) extends into the interior of the bottom mold (1) and is connected to a screw (13) via a coupling. The other end of the screw (13) is rotatably connected to the inner wall of the bottom mold (1). The surface of the screw (13) is threaded with a sliding plate (14). The top of the sliding plate (14) is bolted with a fixing plate (15). The inner wall of the bottom mold (1) is rotatably connected with an L-shaped rod (16). The inner wall of the bottom mold (1) is slidably fitted with a lifting rod (17). The surfaces of the fixing plate (15) and the L-shaped rod (16) are both provided with strip holes (18). The inner wall of the strip hole (18) is provided with a sliding rod (19). The sliding rod (19) is bolted to the surface of the L-shaped rod (16) and the surface of the lifting rod (17) respectively. The top of the lifting rod (17) is bolted with a release plate (20).

3. An injection mold with quantitative injection function according to claim 2, characterized in that, The surface of the slide plate (14) is bolted with a slider (21), and the surface of the slider (21) is slidably connected with a groove (22), and the groove (22) is opened on the inner wall of the bottom mold (1).

4. An injection mold with quantitative injection function according to claim 1, characterized in that, The inner wall of the bottom mold (1) is provided with a cooling pipe (23), and both ends of the cooling pipe (23) are connected to water pipe joints (24).

5. An injection mold with quantitative injection function according to claim 2, characterized in that, The bottom mold (1) and the injection tube (4) are both bolted with protective shells (25), and the first motor (6) and the second motor (12) are both located inside the protective shells (25).

6. An injection mold with quantitative injection function according to claim 1, characterized in that, A sealing gasket (26) is embedded in the surface of the bottom mold (1).

7. An injection mold with quantitative injection function according to claim 1, characterized in that, The injection tube (4) is bolted with a quick connector (27), and the quick connector (27) is connected to the one-way valve (5).

8. An injection mold with quantitative injection function according to claim 1, characterized in that, The surfaces of the bottom mold (1) and the top mold (2) are both provided with mounting holes (28).

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