Low pressure injection molding machine mold drive mechanism

Abstract

This application relates to a low-pressure injection molding machine mold driving mechanism for driving the mold closing of the injection molding machine body, comprising: a first cylinder disposed on the injection molding machine body, the output end of the first cylinder having a connector, the connector being connected to a top plate via a connecting block, the top plate being used to mount an upper mold; the injection molding machine body also having at least one guide rod, the top plate having a corresponding through hole for the guide rod to pass through, so that the top plate can be slidably fitted onto the outside of the guide rod, the guide rod constraining its movement trajectory; a linear guide rail pair, the linear guide rail pair being connected to a base plate via a slider, the base plate being driven by a driving assembly to move along the stroke direction of the linear guide rail pair, the base plate being used to mount a lower mold; a second cylinder disposed at the bottom of the base plate, the second cylinder being used to cooperate with the lower mold to achieve ejection.

Description

Technical Field

[0001] This application belongs to the field of injection molding machine technology and relates to a low-pressure injection molding machine mold drive mechanism. Background Technology

[0002] Low-pressure injection molding is a process that injects molten hot melt adhesive into a mold at a relatively low injection pressure to quickly encapsulate components. It is widely used for the encapsulation and protection of precision components such as electronic circuit boards, sensors, and automotive connectors. The core advantage of this process lies in its low pressure and low stress, which effectively protects internal precision components from damage.

[0003] The mold drive mechanism is a key actuator in low-pressure injection molding machines. Its core function is to achieve rapid, smooth, and precise mold closing and opening, and to ensure sufficient clamping force during injection to prevent material overflow. Common low-pressure injection molding machines use servo motors or hydraulic motors to drive a toggle linkage mechanism to achieve force amplification and mold clamping, enabling high-speed movement and self-locking. However, in low-pressure injection molding applications, this mechanism is complex, requires high manufacturing and assembly precision, leading to increased costs. Furthermore, the non-linear motion trajectory necessitates a precise control system at the mold closing end to ensure smooth mold closure. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this application aims to provide a low-pressure injection molding machine mold drive mechanism that can accurately guide and is easy to maintain.

[0005] This application is achieved through the following technical solution.

[0006] This technical solution provides a low-pressure injection molding machine mold drive mechanism for driving the mold closing of the injection molding machine body, including:

[0007] A first cylinder is provided on the body of the injection molding machine. The output end of the first cylinder is provided with a connector. The connector is connected to a top plate through a connecting block. The top plate is used to install the upper mold.

[0008] The injection molding machine body is also provided with at least one guide rod, and the top plate is provided with a through hole for the guide rod to pass through, so that the top plate can be slidably sleeved on the outside of the guide rod, and the guide rod constrains its movement trajectory.

[0009] A linear guide pair, wherein the linear guide pair is connected to a base plate via a slider, and the base plate is driven by a drive assembly to move along the stroke direction of the linear guide pair. The base plate is used to mount the lower mold.

[0010] The bottom of the base plate is equipped with a second cylinder, which is used to cooperate with the lower mold to lift and eject the mold.

[0011] This technical solution restricts the movement path of the top plate and the upper mold by using guide rods, and moves them vertically by using the first cylinder to cooperate with the lower mold to complete mold closing and demolding. The bottom plate is installed on the slide rail and can be moved horizontally by the drive assembly. The bottom of the bottom plate is equipped with a second cylinder for lifting and demolding, which can cooperate with the lower mold to achieve lifting and demolding.

[0012] The present invention is further configured such that the linear guide pair is mounted on the injection molding machine body, and the linear guide pair is used to cooperate with the drive assembly to drive the base plate to move in the horizontal direction.

[0013] The present invention is further configured such that the driving component is a combination of a motor and a guide rail slider driven by the motor, and the base plate is connected to the slider of the driving component.

[0014] The present invention is further configured such that the driving component is a combination of a cylinder or hydraulic cylinder and a guide rail slider, and the base plate is connected to the slider of the driving component.

[0015] The present invention is further configured such that the driving component is a linear motor or a cylinder, and the driving component is connected to the base plate through a connector.

[0016] The present invention is further configured such that it includes a locking block and a buckle, the locking block is fixed to the upper mold, and the buckle is fixed to the lower mold. When the first cylinder drives the upper mold and the lower mold to close, the locking block is deformed by the buckle and then reset to emit a prompt sound.

[0017] The present invention is further configured such that spring arms are provided on both sides of the card block, and the buckle is provided with a protrusion corresponding to the spring arm. When the upper mold and the lower mold are closed, the protrusion is engaged with the groove inside the spring arm.

[0018] The present invention is further configured such that the guide rods are provided in two sets, two in each set, and the two sets of guide rods are symmetrically arranged about the top plate, and the distance between the two sets of guide rods is greater than the length of the bottom plate.

[0019] The present invention is further configured such that a limiting groove is provided on the connecting block corresponding to the connector, and the connector is snapped into the interior of the connecting block.

[0020] The present invention is further configured such that a sensor is provided at the tail end of the linear guide pair, and the sensor is used to detect the position of the base plate.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0023] Figure 1 This is a schematic diagram of the structure shown in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the first cylinder shown in one embodiment of this application;

[0025] Figure 3 This is a schematic diagram of a connector shown in one embodiment of this application;

[0026] Figure 4 This is a partial enlarged view of A shown in one embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the base plate shown in one embodiment of this application.

[0028] Reference numerals: 1. Injection molding machine body; 11. Guide rod; 2. First cylinder; 21. Joint; 3. Top plate; 31. Connecting block; 4. Bottom plate; 41. Second cylinder; 42. Linear guide pair; 43. Drive assembly; 5. Clamping block; 51. Spring arm; 6. Buckle; 61. Protrusion. Detailed Implementation

[0029] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0031] This embodiment discloses a low-pressure injection molding machine mold drive mechanism for driving the mold closing of the injection molding machine body 1, such as... Figures 1-5 As shown, it includes:

[0032] A first cylinder 2 is provided on the body 1 of the injection molding machine. The output end of the first cylinder 2 is provided with a connector 21. The connector 21 is connected to a top plate 3 through a connecting block 31. The top plate 3 is used to install the upper mold.

[0033] The injection molding machine body 1 is also provided with at least one guide rod 11, and the top plate 3 is provided with a through hole for the guide rod 11 to pass through, so that the top plate 3 can be slidably sleeved on the outside of the guide rod 11, and the guide rod 11 constrains its movement trajectory.

[0034] Linear guide pair 42 is connected to base plate 4 via slider. Base plate 4 is driven by drive assembly 43 to move along the stroke direction of linear guide pair 42. Base plate 4 is used to install lower mold.

[0035] The bottom of the base plate 4 is equipped with a second cylinder 41, which is used to cooperate with the lower mold to lift and eject the mold.

[0036] It should be noted that the injection molding machine body 1 is existing technology. The push rod of the first cylinder 2 can be directly or through the connector 21 connected to the top plate 3 to drive the top plate 3 and the upper mold to move. The linear guide pair 42 can cooperate with the drive assembly 43 to drive the bottom plate 4 and the lower mold to move. The second cylinder 2 is installed on the bottom plate 4, and its push rod can directly or through the connector push the mold lifting plate to move to achieve demolding. Together, they complete the mold closing, injection and demolding processes.

[0037] The guide rod 11 restricts the movement path of the top plate 3 and the upper mold to assist in completing precise mold closing. The first cylinder 2 drives the upper mold to move in the vertical direction to cooperate with the lower mold to complete mold closing and demolding. The bottom plate 4 is installed on the slide rail of the linear guide pair 42 and can be driven to move in the horizontal direction by the drive assembly 43. The bottom of the bottom plate 4 is provided with a second cylinder 41 for lifting and demolding, which can cooperate with the lower mold to achieve lifting and demolding.

[0038] like Figures 1-3 As shown, the linear guide pair 42 is installed on the injection molding machine body 1. The linear guide pair 42 is used to cooperate with the drive assembly 43 to drive the base plate 4 to move in the horizontal direction.

[0039] like Figures 1-3 and Figure 5 As shown, the drive assembly 43 consists of a motor and a guide rail slider driven by the motor. The base plate 4 is connected to the slider of the drive assembly 43. It should be noted that the motor can drive the slider to move via a synchronous pulley and synchronous belt, or it can drive the slider to move directly via a linear motor.

[0040] like Figure 5 As shown, the drive assembly 43 is a combination of a cylinder or hydraulic cylinder and a guide rail slider, and the base plate 4 is connected to the slider of the drive assembly 43.

[0041] like Figures 1-5 As shown, the drive assembly 43 is a linear motor or a cylinder, and the drive assembly 43 is connected to the base plate 4 through a connector.

[0042] like Figure 3 and Figure 4As shown, it also includes a locking block 5 and a buckle 6. The locking block 5 is fixed to the upper mold, and the buckle 6 is fixed to the lower mold. When the first cylinder 2 drives the upper mold and the lower mold to close, the locking block 5 is squeezed and deformed by the buckle 6 and then reset to emit a prompt sound.

[0043] It should be noted that during the mold closing process, the spring arm 51 of the locking block 5 is first squeezed by the protrusion 61 of the buckle 6 and deformed. Then, as the upper mold continues to move closer to the lower mold, the protrusion 61 is inserted into the groove of the spring arm 51, causing the spring arm 51 to instantly reset and emit a beep to indicate that the mold closing is complete. During demolding, the spring arm 51 is squeezed and deformed by the protrusion 61 and then disengages, and can also emit a beep to indicate that demolding is complete.

[0044] like Figure 3 and Figure 4 As shown, the card block 5 has spring arms 51 on both sides, and the buckle 6 has a protrusion 61 corresponding to the spring arms 51. When the upper mold and the lower mold are closed, the protrusion 61 is engaged in the groove of the spring arm 51.

[0045] like Figures 1-3 As shown, there are two sets of guide rods 11, with two rods in each set, and the two sets of guide rods 11 are symmetrically arranged about the top plate 3. The distance between the two sets of guide rods 11 is greater than the length of the bottom plate 4.

[0046] like Figure 3 As shown, the connecting block 31 has a limiting groove corresponding to the connector 21, and the connector 21 is snapped into the interior of the connecting block 31. It should be noted that the connector 21 can be snapped into the interior of the connecting block 31. The connector 21 and the connecting block 31 are restricted by the first cylinder 2 and the top plate 3 restricted by the guide rod 11, and will not be misaligned. The snapping together can complete the operation of driving the mold to move, and can also be fixedly connected to improve the connection stability.

[0047] like Figure 1 As shown, a sensor is provided at the tail end of the linear guide pair 42. The sensor is used to detect the position of the base plate 4. It should be noted that the base plate 4 is driven away from the top plate 3 by the drive assembly 43, so the sensor is set to detect the position of the base plate 4 to ensure the accuracy of mold closing.

[0048] Working principle: The guide rod 11 restricts the movement path of the top plate 3 and the upper mold to assist in completing precise mold closing. The first cylinder 2 drives the upper mold to move in the vertical direction to cooperate with the lower mold to complete mold closing and demolding. The bottom plate 4 is installed on the slide rail of the linear guide pair 42 and can be driven to move in the horizontal direction by the drive assembly 43. The bottom of the bottom plate 4 is equipped with a second cylinder 41 for lifting and demolding, which can cooperate with the lower mold to achieve lifting and demolding.

[0049] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A low-pressure injection molding machine mold drive mechanism for driving the mold closing of the injection molding machine body (1), characterized in that, include: A first cylinder (2) is provided on the body (1) of the injection molding machine. The output end of the first cylinder (2) is provided with a connector (21). The connector (21) is connected to a top plate (3) through a connecting block (31). The top plate (3) is used to install the upper mold. The injection molding machine body (1) is also provided with at least one guide rod (11), and the top plate (3) is provided with a through hole for the guide rod (11) to pass through, so that the top plate (3) can be slidably sleeved on the outside of the guide rod (11), and the guide rod (11) constrains its movement trajectory. A linear guide pair (42) is connected to a base plate (4) via a slider. The base plate (4) is driven by a drive assembly (43) and moves along the stroke direction of the linear guide pair (42). The base plate (4) is used to install the lower mold. The bottom of the base plate (4) is provided with a second cylinder (41), which is used to cooperate with the lower mold to lift and eject the mold.

2. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The linear guide pair (42) is installed on the injection molding machine body (1). The linear guide pair (42) is used to cooperate with the drive assembly (43) to drive the base plate (4) to move in the horizontal direction.

3. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The drive assembly (43) is a combination of a motor and a guide rail slider driven by the motor, and the base plate (4) is connected to the slider of the drive assembly (43).

4. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The drive assembly (43) is a combination of a cylinder or hydraulic cylinder and a guide rail slider, and the base plate (4) is connected to the slider of the drive assembly (43).

5. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The drive assembly (43) is a linear motor or a cylinder, and the drive assembly (43) is connected to the base plate (4) through a connector.

6. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, It also includes a locking block (5) and a buckle (6). The locking block (5) is fixed to the upper mold, and the buckle (6) is fixed to the lower mold. When the first cylinder (2) drives the upper mold and the lower mold to close, the locking block (5) is squeezed and deformed by the buckle (6) and then reset to emit a prompt sound.

7. The low-pressure injection molding machine mold drive mechanism according to claim 6, characterized in that, The card block (5) has spring arms (51) on both sides, and the buckle (6) has a protrusion (61) corresponding to the spring arm (51). When the upper mold and the lower mold are closed, the protrusion (61) is engaged in the groove of the spring arm (51).

8. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The guide rods (11) are provided in two sets, two in each set, and the two sets of guide rods (11) are symmetrically arranged about the top plate (3). The distance between the two sets of guide rods (11) is greater than the length of the bottom plate (4).

9. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The connecting block (31) has a limiting groove corresponding to the connector (21), and the connector (21) is snapped into the inside of the connecting block (31).

10. The low-pressure injection molding machine mold drive mechanism according to claim 1, characterized in that, The linear guide pair (42) is equipped with a sensor at its tail end, which is used to detect the position of the base plate (4).

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