Mold closing driving mechanism for injection mold

Abstract

The utility model discloses a mold closing driving mechanism for an injection mold, relates to the technical field of injection molding, and aims to solve the problems that the mold is deformed and damaged and the service life is affected due to the fact that a cylinder or a hydraulic cylinder is adopted to drive a movable mold and a fixed mold to be pressed in a common mold closing mode of the injection mold. According to the technical scheme, the jacking device is characterized by comprising a first fixed frame, a second fixed frame and a movable seat, a mounting plate is fixedly mounted on the second fixed frame, a driving assembly is fixedly mounted on the mounting plate, a transmission assembly is rotationally connected to the mounting plate, the driving assembly is in transmission connection with the transmission assembly, and a jacking kit is arranged between the movable seat and the mounting plate; and the jacking suite comprises a jacking rod and a lead screw, more stable and more stable jacking action is realized by utilizing the matching of the lead screw and a lead screw seat, and the situation that the movable seat moves quickly, so that overlarge instantaneous pressure is generated between the movable mold and the fixed mold is avoided, so that the two groups of molds are protected, and the service life of the injection mold is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, concretely is injection mold with closing drive mechanism. BACKGROUND

[0002] Injection molding is a method of production molding of industrial products, and the products are usually made of rubber injection molding and plastic injection molding, and injection molding can be divided into injection molding and compression molding method and die casting method.

[0003] In the process of injection molding, the fixed mold and the movable mold need to be tightly attached, and then molten plastic or rubber is injected into the cavity of the mold. In the process of closing the two sets of molds, the traditional driving method is to use a cylinder or a hydraulic cylinder to drive the movable mold and the fixed mold to press together. The range of action stroke is highly dependent on the program, and the computer program is prone to error codes, causing errors in the action stroke, which makes the pressure too large when the two sets of molds are pressed together, causing the mold to deform and be damaged, affecting the service life of the mold. UTILITY MODEL CONTENT

[0004] The utility model aims at providing injection mold with closing drive mechanism to solve the problem that the general injection mold closing method uses a cylinder or a hydraulic cylinder to drive the movable mold and the fixed mold to press together, which easily causes the pressure to be too large when the two sets of molds are pressed together, resulting in mold deformation and damage, affecting the service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: injection mold with closing drive mechanism, comprising:

[0006] First fixed frame;

[0007] Second fixed frame;

[0008] Movable seat, arranged between the first fixed frame and the second fixed frame, the second fixed frame is fixedly installed with a mounting plate;

[0009] Among them, the mounting plate is fixedly installed with a driving assembly, the mounting plate is rotatably connected with a transmission assembly, the driving assembly and the transmission assembly are transmission connection, the movable seat and the mounting plate are provided with a jacking set, the jacking set includes a jack and a lead screw, the transmission assembly includes a transmission wheel and a lead screw seat, the lead screw seat is threadedly connected with the lead screw, the jack is fixedly connected with the movable seat.

[0010] By the technical scheme, the jacking set is used to replace the traditional cylinder and hydraulic cylinder structure, the screw rod seat of the transmission assembly is threadedly connected with the screw rod of the jacking set, when the driving assembly drives the transmission assembly to rotate, the jacking set is driven to move linearly through the rotation of the screw rod seat, and the jacking action is more stable through the cooperation of the screw rod and the screw rod seat, the rapid movement of the movable seat is avoided, the excessive instantaneous pressure between the fixed mold and the movable mold is avoided, and thus the two sets of molds are protected, and the service life of the injection mold is prolonged.

[0011] In a preferred example, the driving assembly can further comprise a driving motor, an adjusting plate, a driving wheel and a transmission belt, and the driving wheel and the transmission wheel are engagedly connected with the transmission belt.

[0012] Through the above technical scheme, the transmission belt is used for transmission, the transmission belt has certain toughness, when the number of rotation of the driving motor is too large, the transmission belt is pulled and deformed, the driving wheel and the transmission wheel can be disengaged from the transmission belt, so that the impact force is converted into the deformation force of the transmission belt, the mold and the driving motor are protected, the transmission belt is a detachable loss object, and the transmission belt can be conveniently replaced in the later use process, so that the use convenience of the overall injection mechanism is improved.

[0013] In a preferred example, the first fixed frame and the second fixed frame are fixedly connected with a limiting column, four limiting columns are arranged, the four limiting columns are uniformly distributed at four corners of the movable seat, and the movable seat and the four limiting columns are slidingly connected.

[0014] Through the above technical scheme, the limiting column is arranged to ensure that the movable seat stably moves linearly between the first fixed frame and the second fixed frame, so that the mold opening is flush when the fixed mold and the movable mold are closed, the mold is protected, and the combined mold has higher air tightness.

[0015] In a preferred example, the top rod is connected with the movable seat through the connecting head.

[0016] Through the above technical scheme, the connecting head is used to connect the top rod and the movable seat, the connecting head and the movable seat are connected through screws, and the connecting head and the top rod are connected through interference connection, so that the top rod and the movable seat are more convenient to connect.

[0017] In a preferred example, the connecting column is fixedly installed on the movable seat, the clamping mechanism is fixedly installed on the side of the second fixed frame away from the mounting plate, and the clamping mechanism is engagedly connected with the connecting column.

[0018] By utilizing the above technical solution and the cooperation of the clamping mechanism and the connecting column, the moving seat can be kept fixed when it moves to the set position, thereby improving the stability of the injection molding process.

[0019] In a preferred embodiment, the present invention can be further configured such that the connecting column includes a cylindrical column and a threaded column, the cylindrical column is connected to the moving seat, and the threaded column passes through the second fixed frame and the mounting plate.

[0020] Through the above technical solution, the connecting column does not interfere with the second fixed frame and the mounting plate when moving in a straight line, and the second fixed frame is provided with a stabilizing ring that fits with the threaded column, so that the threaded column can slide stably to make a straight line movement, further ensuring the stability of the moving seat when moving.

[0021] In a preferred embodiment, the present invention can be further configured such that: a tension assembly is provided on the mounting plate, the tension assembly includes a protective plate and a limiting pulley, the protective plate and the second fixed frame are both rotatably connected to the limiting pulley, and the transmission belt is in contact with the limiting pulley.

[0022] Through the above technical solution, the limiting pulley is engaged with the side of the transmission belt without meshing teeth, pre-tightening the transmission belt and ensuring more stable and reliable power transmission during transmission.

[0023] In a preferred embodiment, the present invention can be further configured such that both the connector and the lead screw are adjustablely and fixedly connected to the top rod.

[0024] Through the above technical solution, the relative positions of the connector and the lead screw and the push rod can be finely adjusted, thereby adjusting the length of the overall lifting kit so that the distance between the moving seat and the first fixed frame can meet the thickness of different molds.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. This utility model utilizes a lifting kit to replace the traditional cylinder and hydraulic cylinder structure. The lead screw seat of the transmission component is threadedly connected to the lead screw of the lifting kit. When the drive component drives the transmission component to rotate, the rotation of the lead screw seat drives the lifting kit to perform linear motion. By utilizing the cooperation between the lead screw and the lead screw seat, a smoother and more stable lifting action is achieved, avoiding rapid movement of the moving base and excessive instantaneous pressure between the moving mold and the fixed mold, thereby protecting both sets of molds and improving the service life of the injection mold.

[0027] 2. This utility model uses a transmission belt for transmission. The transmission belt has a certain degree of toughness. When the drive motor rotates too many times, it will pull on the transmission belt and deform it. Both the drive wheel and the transmission wheel can disengage from the transmission belt, thereby converting the impact force into the deformation force of the transmission belt. This protects both the mold and the drive motor. The transmission belt is a detachable consumable part, which can be more conveniently disassembled and replaced during later use, thereby improving the overall ease of use of the injection molding mechanism. Attached Figure Description

[0028] Figure 1 This is a right axonometric view of the mold closing drive mechanism for injection molds in this utility model;

[0029] Figure 2 This is a left axonometric view of the mold closing drive mechanism for injection molds in this utility model;

[0030] Figure 3 This is a schematic diagram of the second fixed frame in this utility model;

[0031] Figure 4 This is a schematic diagram of the overall transmission assembly in this utility model;

[0032] Figure 5 This is a schematic diagram of the overall lifting kit in this utility model.

[0033] In the diagram: 1. First fixed frame; 2. Second fixed frame; 3. Moving seat; 4. Limiting post; 5. Mounting plate; 6. Lifting kit; 7. Transmission assembly; 8. Drive wheel; 9. Tension assembly; 10. Connecting post; 11. Clamping mechanism; 12. Transmission belt; 13. Adjusting plate; 14. Limiting pulley; 15. Transmission wheel; 16. Lead screw seat; 17. Lead screw; 18. Top rod; 19. Connector. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 This utility model provides an embodiment of a mold closing drive mechanism for injection molds, comprising a first fixed frame 1, a second fixed frame 2, and a movable base 3. The first fixed frame 1 is used to fix the fixed mold of the mold, and the movable base 3 is used to fix the movable mold of the mold. Both the first fixed frame 1 and the second fixed frame 2 are used to fix the entire injection mold in a set position. The first fixed frame 1 and the second fixed frame 2 are fixed to the production station using bolts. A mounting plate 5 is fixedly installed on the second fixed frame 2 using a bolt connection. A drive assembly is fixedly installed on the mounting plate 5, and a transmission assembly 7 is rotatably connected to the mounting plate 5. The drive assembly includes a drive motor, an adjusting plate 13, a drive wheel 8, and a transmission belt 12. The adjusting plate 13 is used to fix the drive wheel 8 and the drive motor to the mounting plate 5. The drive motor is installed on the back of the adjusting plate 13, and the drive wheel 8 is installed on the front of the adjusting plate 13. The drive motor and the drive wheel 8 are connected by a coupling. The transmission assembly 7 includes... The transmission wheel 15 and the lead screw seat 16 are installed inside the transmission wheel 15 and fixed with bolts. The lead screw seat 16 is embedded inside the mounting plate 5 and connected with bearings, so that the entire transmission assembly 7 can rotate smoothly. A lifting kit 6 is provided between the moving seat 3 and the mounting plate 5. The lifting kit 6 includes a push rod 18 and a lead screw 17. The push rod 18 and the lead screw 17 are fixedly connected, and the connection between the two is at the end. The lead screw 17 passes through the lead screw seat 16 and is threaded to the lead screw seat 16. The push rod 18 is fixedly connected to the moving seat 3. At the same time, the drive wheel 8 and the transmission wheel 15 are both engaged with the transmission belt 12. When the drive wheel 8 is driven to rotate by the drive motor, the drive wheel 8 will drive the transmission wheel 15 and the lead screw seat 16 to rotate through the transmission belt 12. The rotation of the lead screw seat 16 realizes the linear movement of the lead screw 17 and the push rod 18. The push rod 18 will push the moving seat 3 to move linearly, thereby realizing the mold opening and closing actions.

[0038] Please see Figure 1 and Figure 2Limiting posts 4 are fixedly connected between the first fixed frame 1 and the second fixed frame 2. The two ends of the limiting posts 4 are fixed to the first fixed frame 1 and the second fixed frame 2 respectively by bolt flanges. There are four limiting posts 4, and the four limiting posts 4 are evenly distributed at the four corners of the moving seat 3. The moving seat 3 and the four limiting posts 4 are all in close sliding connection.

[0039] The surfaces of the four limit posts 4 are all smooth and made of high-strength alloy material. The moving seat 3 and the limit posts 4 can slide against each other through hard friction without causing wear to the limit posts 4. Furthermore, the contact position between the moving seat 3 and the limit posts 4 can be equipped with sliding components, including rollers and sleeves, according to the actual production needs on site.

[0040] Please see Figure 5 One end of the push rod 18 is equipped with a connector 19. The moving seat 3 is connected to the push rod 18 through the connector 19. Both the connector 19 and the lead screw 17 are adjustablely and fixedly connected to the push rod 18. When the push rod 18 is connected to the connector 19, it will be inserted into the interior of the connector 19. The connector 19 is a sleeve structure with an expandable port. The depth of the push rod 18 inserted into the connector 19 can be finely adjusted. Then, the port of the connector 19 is closed laterally using bolts and nuts to fix the connector 19 to the push rod 18. When the lead screw 17 is connected to the push rod 18, the lead screw 17 will be inserted into the port of the push rod 18. The insertion depth of the lead screw 17 can also be adjusted. Then, the lead screw 17 is fixed by pressing it against the side of the port of the push rod 18 using bolts.

[0041] Please see Figure 1 and Figure 2A connecting column 10 is fixedly installed on the moving seat 3. A clamping mechanism 11 is fixedly installed on the side of the second fixed frame 2 away from the mounting plate 5. The clamping mechanism 11 is engaged with the connecting column 10. The connecting column 10 includes a cylindrical column and a threaded column. The cylindrical column is fixedly connected to the moving seat 3 by bolts. The cylindrical column and the threaded column are an integral structure. The threaded column passes through the second fixed frame 2 and the mounting plate 5. A sleeve is provided inside the second fixed frame 2 to fit against the threaded column. When the moving seat 3 moves linearly, the threaded column slides and rubs against the sleeve to ensure the stability of the moving seat 3 and the connecting column 10. The clamping mechanism 11 includes a fixed frame, a clamping cylinder, and two sets of clamping arms with internal threaded structures. A transmission assembly 7 is connected between the clamping cylinder and the two sets of clamping arms. The fixing frame is used to fix the clamping cylinder to the second fixing frame 2. The transmission assembly 7 includes two scissor legs that can move in opposite directions and a connecting leg that connects to the clamping cylinder. The clamping cylinder moves in a cross motion by pushing and pulling the scissor legs through the connecting leg, thereby pushing and pulling the two sets of clamping arms to close and open. When the two sets of clamping arms are in contact with the threaded column, they will fix the connecting column 10, preventing it from moving linearly, thereby fixing the position of the moving seat 3. During mold closing and injection molding, it ensures that the fixed mold and the moving mold remain closed. The pressure during injection molding will be borne by the connecting column 10, avoiding excessive pressure on the lifting kit 6.

[0042] Please see Figure 3 The mounting plate 5 is equipped with a tension assembly 9, which includes a protective plate and three limiting pulleys 14. The protective plate and the second fixed frame 2 are rotatably connected to the limiting pulleys 14. The side of the transmission belt 12 without teeth will be in contact with the limiting pulleys 14, thereby using the three limiting pulleys 14 to stretch the transmission belt 12, so that the transmission belt 12 is tightened by force, improving transmission efficiency and stability.

[0043] Working principle: In use, the fixed mold is fixedly installed on the first fixed frame 1, and the moving mold is installed on the moving base 3, so that the fixed mold and the moving mold are set opposite to each other. When the two sets of molds need to be closed, the drive motor drives the drive wheel 8 to rotate. The drive wheel 8 drives the drive wheel 15 to rotate through the transmission belt 12. The drive wheel 15 is directly connected and fixed to the lead screw seat 16, so the drive wheel 15 drives the lead screw seat 16 to rotate. The rotation of the lead screw seat 16 drives the lead screw 17 to move linearly. The lead screw 17 pushes the moving base through the ejector rod 18. 3 moves to one side of the first fixed frame 1, and the lifting assembly 6 formed by the combination of lead screw 17 and push rod 18 is provided in two sets. The transmission assembly 7 that combines the stroke of transmission wheel 15 and lead screw seat 16 is also provided in two sets. Both are powered by transmission belt 12, thereby driving the two sets of lifting assemblies 6 to move in the same direction at the same time, so that the moving mold moves stably closer to the fixed mold, so that the two sets of molds close. After the molds are closed, the moving seat 3 will be fixed by the clamping mechanism 11 and the connecting column 10, so that the moving seat 3 and the moving mold remain stable.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A clamp drive mechanism for an injection mold characterized by: Include: First fixed frame (1); Second fixed frame (2); Movable seat (3), provided between the first fixed frame (1) and the second fixed frame (2), the second fixed frame (2) is fixedly installed with mounting plate (5); Wherein, the mounting plate (5) is fixedly installed with driving assembly, the mounting plate (5) is rotatably connected with transmission assembly (7), the driving assembly is in transmission connection with transmission assembly (7), the movable seat (3) and the mounting plate (5) are provided with jacking sleeve (6), the jacking sleeve (6) includes top rod (18) and lead screw (17), the transmission assembly (7) includes transmission wheel (15) and lead screw seat (16), the lead screw seat (16) is in screw connection with lead screw (17), the top rod (18) is fixedly connected with movable seat (3).

2. The mold clamping drive mechanism for an injection mold according to claim 1, characterized by: The driving assembly includes driving motor, adjusting plate (13), driving wheel (8) and transmission belt (12), the driving wheel (8) and transmission wheel (15) are all in engagement connection with transmission belt (12).

3. The mold clamping drive mechanism for an injection mold according to claim 1, characterized by: The first fixed frame (1) and the second fixed frame (2) are fixedly connected with limiting column (4), the limiting column (4) is provided with four, four limiting columns (4) are evenly distributed in four corners of movable seat (3), and movable seat (3) and four limiting columns (4) are all slidingly connected.

4. The mold clamping drive mechanism for an injection mold according to claim 1, characterized by: One end of the top rod (18) is provided with a connecting head (19), and the movable seat (3) is connected with the top rod (18) through the connecting head (19).

5. The mold clamping drive mechanism for an injection mold according to claim 1, characterized by: The movable seat (3) is fixedly installed with connecting column (10), one side of the second fixed frame (2) away from the mounting plate (5) is fixedly installed with clamping mechanism (11), the clamping mechanism (11) is in engagement connection with the connecting column (10).

6. The mold clamping drive mechanism for an injection mold according to claim 5, characterized in that: The connecting column (10) includes a cylindrical and a threaded column, the cylindrical is connected with the movable seat (3), and the threaded column penetrates the second fixed frame (2) and the mounting plate (5).

7. The mold clamping drive mechanism for an injection mold according to claim 2, characterized by: The mounting plate (5) is provided with tension assembly (9), the tension assembly (9) includes protective plate and limiting pulley (14), the protective plate and the second fixed frame (2) are rotatably connected with limiting pulley (14), and the transmission belt (12) is attached to the limiting pulley (14).

8. The mold clamping drive mechanism for an injection mold according to claim 4, characterized by: The connecting head (19) and the lead screw (17) are all adjustably fixedly connected with the top rod (18).

Images