Mold opening and closing device of plastic blow molding machine

Abstract

The utility model discloses a mould opening and closing device of a plastic blow molding machine, which comprises a support frame, a group of mould seat frames used for installing blow molding mould seats are symmetrically arranged at the top of the support frame, the mould seat frames are in sliding connection with the support frame through guide rods, the oppositely arranged mould seat frames drive the mould seats to open and close through a driving mechanism, and the driving mechanism comprises a hydraulic cylinder and a swing arm. The hydraulic cylinder is arranged between the two oppositely-arranged swing arms, the free end of the hydraulic cylinder ejects and pushes the mold base frame to drive the blowing mold to be closed, and the free end of the hydraulic cylinder retracts and pulls the mold base frame to drive the blowing mold to be opened. The device disclosed by the utility model is reasonable in structure and stable and reliable in operation, can effectively drive the blow molding mold to perform mold closing and mold opening, improves the production efficiency and the product quality, and in addition, the synchronous rack and the gear are arranged, so that the opening and closing movement of the mold seat frame is more synchronous, and the accurate mold closing and mold opening of the mold are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of opening and closing molds of blow molding machines, in particular to an opening and closing mold device of a plastic blow molding machine. Background Art

[0002] When the blow molding machine is operating, the product needs to be molded, so a mold opening and closing device is needed. It generally has two functions. One is to lock the mold to prevent the mold from moving, deforming and leaking during blow molding. The other is to pull the injection molded product out of the cavity when opening the mold to separate the product from the mold. Mold opening and closing is an important step in the production process of blow molding products. However, most of the current blow molding machine mold opening and closing devices are manually operated and can only be used in a fixed manner, which affects the production efficiency and quality of blow molding products. Utility Model Content

[0003] The utility model mainly solves the technical problem of providing a mold opening and closing device for a plastic blow molding machine.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0005] A mold opening and closing device for a plastic blow molding machine comprises a support frame, a group of mold base frames for mounting a blow molding mold base are symmetrically arranged on the top of the support frame, the mold base frames are slidably connected to the support frame via guide rods, the relatively arranged mold base frames drive the opening and closing of the mold base via a driving mechanism, the driving mechanism comprises a hydraulic cylinder and a swing arm, the hydraulic cylinder is arranged between two relatively arranged swing arms, the free end of the hydraulic cylinder pushes the mold base frame to drive the blow molding mold to close the mold, and the free end of the hydraulic cylinder contracts to pull the mold base frame to drive the blow molding mold to open the mold.

[0006] Preferably, both ends of the swing arm are connected to the mold base frame and the hydraulic cylinder respectively, and the middle section of the swing arm is rotatably connected to the support frame.

[0007] Preferably, a connecting rod is provided between the swing arm and the mold base frame, the mold base frame is provided with a rotating seat, and both ends of the connecting rod are rotatably connected to the rotating seat and the swing arm respectively.

[0008] Preferably, the mold base frame is provided with a plurality of guide sleeves, and the guide rods pass through the guide sleeves and are slidably connected to each other.

[0009] Preferably, a rotating seat is provided at both the free end and the fixed end of the hydraulic cylinder, and the rotating seat is rotatably connected to the swing arm.

[0010] Preferably, a synchronous rack is further provided at the bottom of the mold base frame, and the teeth of the synchronous racks provided at the bottom of the mold base frame symmetrically provided on the same side are arranged opposite to each other, and the two synchronous racks on the same side are both meshed with a gear.

[0011] Preferably, the support frame is further provided with a sliding seat, the synchronous rack passes through the sliding seat and is slidably connected, and the gear is rotatably connected to the sliding seat via a bearing.

[0012] Preferably, both ends of the guide rod are provided with threads for fixing the guide rod, and both ends of the guide rod are connected to the support frame through nuts.

[0013] The beneficial technical effects of the utility model are:

[0014] The utility model has a reasonable structure, stable and reliable operation, and can effectively drive the blow mold to close and open the mold, thereby improving production efficiency and product quality. At the same time, the use of structures such as swing arms, hydraulic cylinders and connecting rods makes the mold opening and closing process smoother and extends the service life of the equipment. In addition, synchronous racks and gears are set to make the opening and closing movement of the mold base more synchronous, ensuring the precise closing and opening of the mold. The overall design is reasonable, easy to maintain and repair, and has good practicality and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the position of the synchronous rack of the utility model;

[0017] Figure 3 It is a schematic diagram of the synchronous rack and gear structure of the utility model;

[0018] The parts in the accompanying drawings are marked as follows:

[0019] 1. Support frame, 2. Mold base frame, 3. Guide rod, 4. Blow mold base, 5. Hydraulic cylinder, 6. Swing arm, 7. Connecting rod, 8. Rotating seat, 9. Guide sleeve, 10. Rotating seat, 11. Synchronous rack, 12. Sliding seat, 13. Gear. DETAILED DESCRIPTION

[0020] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] This specific embodiment discloses in detail a mold opening and closing device of a plastic blow molding machine, including a support frame 1, a group of mold base frames 2 for mounting a blow mold base 4 are symmetrically arranged on the top of the support frame, the mold base frames are slidably connected to the support frame through a guide rod 3, and the relatively arranged mold base frames drive the opening and closing of the mold base through a driving mechanism. The driving mechanism includes a hydraulic cylinder 5 and a swing arm 6, and the hydraulic cylinder is arranged between two relatively arranged swing arms. The free end of the hydraulic cylinder pushes the mold base frame to drive the blow mold to close the mold, and the free end of the hydraulic cylinder contracts and pulls the mold base frame to drive the blow mold to open the mold.

[0024] Furthermore, both ends of the swing arm are connected to the mold base frame and the hydraulic cylinder respectively, and the middle section of the swing arm is rotatably connected to the support frame.

[0025] Furthermore, a connecting rod 7 is provided between the swing arm and the mold base frame, and the mold base frame is provided with a rotating seat 8, and both ends of the connecting rod are rotatably connected to the rotating seat and the swing arm respectively.

[0026] Furthermore, the mold base frame is provided with a plurality of guide sleeves 9, and the guide rods penetrate the guide sleeves and are slidably connected to each other.

[0027] Furthermore, a rotating seat 10 is provided at both the free end and the fixed end of the hydraulic cylinder, and the rotating seat is rotatably connected to the swing arm.

[0028] Furthermore, a synchronous rack 11 is provided at the bottom of the mold base frame, and the teeth of the synchronous racks symmetrically arranged at the bottom of the mold base frame on the same side are arranged opposite to each other, and the two synchronous racks on the same side are both meshed with a gear 13.

[0029] Furthermore, the support frame is also provided with a sliding seat 12, the synchronous rack passes through the sliding seat and is slidably connected, and the gear is rotatably connected to the sliding seat through a bearing.

[0030] Furthermore, threads for fixing the guide rod are provided at both ends of the guide rod, and both ends of the guide rod are connected to the support frame through nuts.

[0031] The utility model has a reasonable structure, stable and reliable operation, and can effectively drive the blow mold to close and open the mold, thereby improving production efficiency and product quality. At the same time, the use of structures such as swing arms, hydraulic cylinders and connecting rods makes the mold opening and closing process smoother and extends the service life of the equipment. In addition, synchronous racks and gears are set to make the opening and closing movement of the mold base more synchronous, ensuring the precise closing and opening of the mold. The overall design is reasonable, easy to maintain and repair, and has good practicality and economy.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A mold opening and closing device for a plastic blow molding machine, characterized in that: It includes a support frame, a group of mold base frames for installing a blow mold base are symmetrically arranged on the top of the support frame, the mold base frames are slidably connected to the support frame through guide rods, and the relatively arranged mold base frames drive the opening and closing of the mold base through a driving mechanism. The driving mechanism includes a hydraulic cylinder and a swing arm, and the hydraulic cylinder is arranged between two relatively arranged swing arms. The free end of the hydraulic cylinder pushes the mold base frame to drive the blow mold to close the mold, and the free end of the hydraulic cylinder contracts and pulls the mold base frame to drive the blow mold to open the mold.

2. The mold opening and closing device of the plastic blow molding machine according to claim 1, characterized in that: The two ends of the swing arm are respectively connected to the mold base frame and the hydraulic cylinder, and the middle section of the swing arm is rotatably connected to the support frame.

3. The mold opening and closing device of the plastic blow molding machine according to claim 2, characterized in that: A connecting rod is arranged between the swing arm and the mold base frame, the mold base frame is provided with a rotating seat, and two ends of the connecting rod are respectively rotatably connected with the rotating seat and the swing arm.

4. The mold opening and closing device of the plastic blow molding machine according to claim 1, characterized in that: The mold base frame is provided with a plurality of guide sleeves, and the guide rods penetrate through the guide sleeves and are slidably connected with each other.

5. The mold opening and closing device of the plastic blow molding machine according to claim 1, characterized in that: The free end and the fixed end of the hydraulic cylinder are both provided with a rotating seat, and the rotating seat is rotatably connected to the swing arm.

6. The mold opening and closing device of the plastic blow molding machine according to claim 1, characterized in that: The bottom of the mold base frame is also provided with a synchronous rack, and the teeth of the synchronous racks arranged at the bottom of the mold base frame symmetrically arranged on the same side are arranged opposite to each other, and the two synchronous racks on the same side are both meshed with a gear.

7. The mold opening and closing device of the plastic blow molding machine according to claim 6, characterized in that: The support frame is also provided with a sliding seat, the synchronous rack passes through the sliding seat and is slidably connected, and the gear is rotatably connected to the sliding seat through a bearing.

8. The mold opening and closing device of the plastic blow molding machine according to claim 1, characterized in that: The two ends of the guide rod are provided with threads for fixing the guide rod, and the two ends of the guide rod are connected to the support frame through nuts.

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