An integrated seat-cylinder and mold-cylinder structure of a horizontal locking horizontal injection molding machine

Abstract

This application relates to the technical field of injection molding machines, and in particular to an integrated base cylinder and mold cylinder structure for a horizontal locking injection molding machine. The structure includes an injection base and an injection tube mounted on the injection base. Base cylinders are installed on both sides of the injection base, and mold cylinders are located on both sides of the injection tube. The mold cylinders and base cylinders share a common hydraulic cylinder shaft. A piston 1, slidably embedded in the mold cylinder, is located in the middle section of the hydraulic cylinder shaft, and a piston 2, slidably embedded in the base cylinder, is located at the end of the hydraulic cylinder shaft. The mold cylinder drives piston 1 to move, causing the hydraulic cylinder shaft to move axially along with the base cylinder body. The position of the injection tube is adjusted by hydraulic pressure regulation on both sides of piston 2 within the base cylinder. This design, by coaxially arranging the mold cylinder and base cylinder, allows the hydraulic cylinder shaft to move axially under the action of piston 1. Because the internal pressure of the base cylinder is stable, the entire base cylinder 2 moves forward, thus synchronizing the movement of the mold and injection tube outside the mold cylinder. This reduces the time difference between mold locking and injection tube locking during mold clamping and demolding, thereby accelerating the injection process.

Description

Technical Field

[0001] This application relates to the technical field of injection molding machines, and in particular to an integrated seat cylinder and mold cylinder structure for a horizontal lock injection molding machine. Background Technology

[0002] In the field of horizontal injection molding machines, traditional injection molding equipment often uses a separate structure for the mold cylinder and the base cylinder, with their drive systems being independent of each other. In the injection process, the mold cylinder is responsible for the locking and opening of the mold, while the base cylinder is responsible for the forward and backward movement of the injection tube (including the nozzle).

[0003] During mold-locking injection molding, the mold cylinder must first lock the mold, and then the base cylinder drives the injection nozzle forward to press the nozzle against the mold. Similarly, during demolding, the base cylinder must first retract the injection nozzle before the mold cylinder performs the mold opening action. This separate operation process results in a significant time difference, leading to a longer unit operating cycle and difficulty in improving production efficiency. Therefore, to solve the above problems, this application provides an integrated base cylinder and mold cylinder structure for a horizontal lock injection molding machine. Utility Model Content

[0004] To address the aforementioned issues, this application provides an integrated base cylinder and mold cylinder structure for a horizontal lock injection molding machine.

[0005] This application provides an integrated seat cylinder and mold cylinder structure for a horizontal lock injection molding machine, including an injection seat and an injection tube installed on the injection seat. Seat cylinders are installed on both sides of the injection seat, and mold cylinders are provided on both sides of the injection tube. The mold cylinders and seat cylinders share a hydraulic cylinder shaft. A piston 1 that is slidably embedded in the mold cylinder is provided in the middle section of the hydraulic cylinder shaft, and a piston 2 that is slidably embedded in the seat cylinder is provided at the end. When the piston driven by the mold cylinder moves, the cylinder shaft and the cylinder body of the seat cylinder undergo axial displacement. The position of the injection tube is adjusted by regulating the oil pressure on both sides of the piston inside the cylinder.

[0006] By setting the mold cylinder and the seat cylinder coaxially, the cylinder shaft moves axially under the action of piston one. Since the pressure inside the seat cylinder is stable, the seat cylinder two moves forward as a whole. This makes the mold and the injection tube outside the mold cylinder move synchronously. After the mold is in place, the pressure on both sides of piston two inside the seat cylinder is changed, the seat cylinder body moves, and the position of the injection tube is changed again, so that the injection tube and the mold are pressed together. This setting can reduce the time difference between mold locking and injection tube locking during mold locking and demolding, thereby accelerating the injection process.

[0007] Preferably, the mold cylinder is fixed in position on the external worktable.

[0008] Preferably, the seat cylinder is slidably mounted on an external worktable.

[0009] Preferably, the ejector mount has a screw installed inside.

[0010] Preferably, an extrusion cylinder is also provided behind the seat cylinder and fixed thereto. The extrusion cylinder is slidably connected to the external worktable, and the end of the screw is fixed to the extrusion cylinder.

[0011] Preferably, the front end of the cylinder shaft is connected to the moving mold.

[0012] In summary, this application includes the following beneficial technical effects: By setting the mold cylinder and the seat cylinder coaxially, the cylinder shaft moves axially under the action of piston one. Since the internal pressure of the seat cylinder is stable, the seat cylinder two moves forward as a whole. This makes the mold and the injection tube outside the mold cylinder move synchronously. During the mold locking and demolding process, the time difference between locking the mold and locking the injection tube can be reduced, thereby accelerating the injection process. Attached Figure Description

[0013] Figure 1 This is a horizontal sectional view of Embodiment 1 of this application; Figure 2 This is a longitudinal sectional view of Embodiment 1 of this application.

[0014] Explanation of reference numerals in the attached drawings: 1. Mold cylinder; 2. Seat cylinder; 3. Hydraulic cylinder shaft; 31. Piston one; 32. Piston two; 4. Injection seat; 5. Injection tube; 6. Extrusion cylinder; 7. Screw. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1 - Figure 2 This application will be described in further detail.

[0016] Example 1: An integrated base cylinder and mold cylinder structure for a horizontal lock injection molding machine, with reference to Figure 1 - Figure 2 The device includes a shooting base 4 and a shooting tube 5 mounted on the shooting base 4. Both sides of the shooting base 4 are equipped with seat cylinders 2, and both sides of the shooting tube 5 are equipped with mold cylinders 1. The entire device is mounted on the same workbench. The mold cylinders 1 are fixedly mounted on the workbench with bolts. A horizontal guide rail module is set below the shooting base 4, and the horizontal guide rail module is slidably connected to the workbench.

[0017] Mold cylinder 1 and seat cylinder 2 share a common hydraulic cylinder shaft 3. A piston 31, slidably embedded in mold cylinder 1, is located in the middle section of hydraulic cylinder shaft 3, and a piston 32, slidably embedded in seat cylinder 2, is located at the end of hydraulic cylinder shaft 3. Both mold cylinder 1 and seat cylinder 2 are connected to oil pipes in an external hydraulic cylinder system, and both use independent hydraulic systems. When the hydraulic system of mold cylinder 1 is working, the hydraulic system of seat cylinder 2 remains unchanged, thus mold cylinder 1 drives piston 31 to move. Hydraulic cylinder shaft 3, along with the entire cylinder body of seat cylinder 2, undergoes axial displacement along the horizontal guide rail module, at which point mold locking is completed. Meanwhile, the injection nozzle 5, driven by mold cylinder 1, has reached the secondary advance position. At this point, the external hydraulic system changes the oil pressure on both sides of piston 32 in seat cylinder 2, thus changing the position of injection seat 4. This causes the nozzle 5, fixed to injection seat 4, to move forward, completing the clamping between nozzle 5 and the mold. Since the existing nozzle 5 and mold base 1 move independently, the mold cylinder 1 needs to lock first before driving the nozzle 5 assembly forward. However, this application overlaps the front strokes of the mold cylinder 1 and nozzle 5, thus effectively reducing the time wasted during nozzle movement. The demolding process is the same, which can effectively reduce the demolding time. Therefore, in overall production, the time can be reduced each time, extending the production timeline and effectively improving production efficiency.

[0018] The bottom end of the extrusion cylinder 6 is also connected to the worktable via a horizontal guide rail module, so its position moves along with the position of the injection unit 4. During injection molding, the extrusion cylinder 6 actuates, causing the screw 7 connected to it to move axially, thereby pushing the screw 7 forward to complete the injection molding operation.

[0019] The foregoing description, with reference to preferred embodiments, illustrates an exemplary implementation of an integrated seat cylinder and mold cylinder structure for a horizontal locking injection molding machine provided by this disclosure. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, the protection scope of which is determined by the appended claims.

Claims

1. An integrated base cylinder and mold cylinder structure for a horizontal locking injection molding machine, comprising an injection base (4) and an injection tube (5) mounted on the injection base (4), characterized in that: Both sides of the injection seat (4) are equipped with seat cylinders (2), and both sides of the injection tube (5) are equipped with mold cylinders (1). The mold cylinders (1) and the seat cylinders (2) share a hydraulic cylinder shaft (3). The middle section of the hydraulic cylinder shaft (3) is equipped with a piston one (31) that slides into the mold cylinder (1), and the end is equipped with a piston two (32) that slides into the seat cylinder (2). The mold cylinder (1) drives the piston (31) to move, and the oil cylinder shaft (3) drives the cylinder body of the seat cylinder (2) to perform axial displacement; The oil pressure on both sides of the piston (32) inside the cylinder (2) is adjusted to adjust the position of the injection tube (5).

2. The integrated seat cylinder and mold cylinder structure according to claim 1, characterized in that: The mold cylinder (1) is fixed in position on the external workbench.

3. The integrated seat cylinder and mold cylinder structure according to claim 1, characterized in that: The seat cylinder (2) is slidably mounted on the external workbench.

4. The integrated seat cylinder and mold cylinder structure according to claim 1, characterized in that: The screw (7) is provided inside the firing seat (4).

5. The integrated seat cylinder and mold cylinder structure according to claim 4, characterized in that: An extrusion cylinder (6) is also provided behind the seat cylinder (2) and fixed thereto. The extrusion cylinder (6) is slidably connected to the external worktable, and the end of the screw (7) is fixed to the extrusion cylinder (6).

6. The integrated seat cylinder and mold cylinder structure according to claim 1, characterized in that: The front end of the cylinder shaft (3) is connected to the moving mold.

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