Mold opening and closing device of blow molding machine

Abstract

The utility model discloses a mould opening and closing device of a blow molding machine, which comprises a support frame body, support frames are respectively welded on the left side and the right side of the support frame body, two sliding frames are connected to the upper parts of the support frames in a sliding manner, hydraulic cylinders are fixedly connected to the support frames, piston rods of the hydraulic cylinders are fixedly connected with the sliding frames, and the piston rods of the hydraulic cylinders are fixedly connected with the sliding frames. A mold supporting seat capable of being separated from the supporting frame is arranged in the supporting frame, a water cooling device is arranged between the mold supporting seat and the supporting frame, and a metal plate is embedded in the front side of the water cooling device. The design purpose of the water cooling device is to effectively cool the mold so as to ensure the quality and the production efficiency of plastic products in the blow molding process, and the water cooling device can be separated from the mold supporting seat, so that energy can be saved when cooling is not needed, and the mold can be conveniently replaced and maintained.

Description

Technical Field

[0001] This utility model relates to a mold opening and closing device, and more specifically, to a mold opening and closing device for a blow molding machine. Background Technology

[0002] With the rapid development of the plastics industry, blow molding machines, as key equipment for manufacturing hollow plastic products, are playing an increasingly important role in industrial production. Traditional blow molding machine mold opening and closing devices mainly rely on mechanical structures and hydraulic systems to achieve mold opening and closing. While this design basically meets production needs, it has gradually revealed some shortcomings in terms of efficiency, energy consumption, and mold maintenance. Particularly in the design of the cooling mechanism, traditional blow molding machines typically use a fixed water cooling system directly installed on or near the mold surface. This method has certain limitations in practical operation. For example, when mold replacement or adjustment is required, because the cooling device is tightly connected to the mold, it cannot be separated without stopping the machine. This not only limits production flexibility but also leads to unnecessary heat waste. Furthermore, traditional cooling designs struggle to effectively meet the high-efficiency cooling requirements of complex-shaped molds, thus affecting product quality and production efficiency.

[0003] Existing blow molding machine mold opening and closing devices fail to adequately consider the need for rapid and independent mold operation during processing in their cooling system design. Specifically, most current blow molding machines' cooling devices cannot be separated from the mold during operation. This means that the cooling system remains operational even in processes where cooling is not required, resulting in energy waste. Furthermore, for applications requiring frequent mold changes to accommodate different product production, fixed cooling devices significantly limit production efficiency and increase operational complexity. Additionally, the fixed connection between the cooling device and the mold creates numerous inconveniences during maintenance and cleaning. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for the mold opening and closing device of a blow molding machine.

[0005] According to a first aspect of this utility model, a mold opening and closing device for a blow molding machine is provided, comprising a support frame, with support brackets welded to the left and right sides of the support frame, two sliding frames slidably connected to the upper part of the support brackets, a hydraulic cylinder fixedly connected to the support brackets, the piston rod of the hydraulic cylinder being fixedly connected to the sliding frames, a mold support seat separable from the support brackets being provided inside the support brackets, a water cooling device being provided between the mold support seat and the support frame, a metal plate being embedded in the front side of the water cooling device, a first electromagnet being provided between the sliding frames and the mold support seat, a spring being welded to the inner side of the sliding frames, the mold support seat being an iron support seat, a bidirectional lead screw being installed at the lower part of the support frame, and two second sliders being respectively connected to the upper part of the bidirectional lead screw via lead screw nuts, with a second electromagnet installed on the upper part of the second sliders.

[0006] Optionally, the first electromagnet is fixedly connected to the lower inner wall of the sliding frame, the mold support seat is provided with a notch, the upper part of the support frame is provided with a sliding groove, the lower part of the sliding frame is welded with a first slider, and a motor for driving the bidirectional lead screw to rotate is fixedly connected to the support frame.

[0007] Optionally, the number of mold support seats is set to two, and the two mold support seats are used to connect the punch and the die respectively.

[0008] Optionally, insert blocks are fixedly connected to the punch and die respectively, and a slot plate is fixedly connected to the upper part of the mold support.

[0009] Optionally, the water cooling device is fixedly connected to the upper side of the inner wall of the sliding frame. The water cooling device includes a circulating water pipe, one side of which is embedded in a metal plate. One end of the circulating water pipe is connected to a water tank. A circulating water pump is connected to the upper part of the water tank, and one end of the circulating water pipe is connected to the circulating water pump.

[0010] Optionally, the second electromagnet includes a plastic box, an iron core is fixedly connected inside the plastic box, and a coil is wound around the outside of the iron core.

[0011] According to one embodiment of this utility model, the water cooling device is designed to effectively cool the mold, thereby ensuring the quality and production efficiency of the plastic products during blow molding. A key feature of this utility model is that the water cooling device can be separated from the mold support, which not only helps save energy when cooling is not required but also facilitates mold replacement and maintenance.

[0012] In the mold opening and closing device of the blow molding machine, a combination of electromagnets and springs is used to achieve dynamic connection between the sliding frame and the mold support.

[0013] By employing an electromagnet connection and designing that the electromagnet is de-energized and springs open when the connection is not needed, a quick and safe separation mechanism is achieved between the mold support and the sliding frame.

[0014] By designing the water cooling device as a structure that can be separated from the mold support, the goal of flexibly controlling the cooling process is achieved.

[0015] This design allows the water cooling system to be disconnected when cooling is not required, avoiding unnecessary energy consumption. Furthermore, the separate water cooling unit makes operation more convenient when mold changes or maintenance are needed, eliminating the need to completely disassemble the entire cooling system and significantly reducing downtime.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a first-view structural schematic diagram of the mold opening and closing device of a blow molding machine in one embodiment;

[0019] Figure 2 This is a second-view structural schematic diagram of the mold opening and closing device of a blow molding machine in one embodiment;

[0020] Figure 3 This is an exploded structural diagram of the mold opening and closing device of a blow molding machine in one embodiment;

[0021] Figure 4 This is a schematic diagram of the electromagnet structure of the mold opening and closing device of a blow molding machine in one embodiment;

[0022] Figure 5 This is a schematic diagram of a water cooling device for the mold opening and closing mechanism of a blow molding machine in one embodiment;

[0023] Figure 6 This is a schematic diagram of a circulating water pump in the mold opening and closing device of a blow molding machine according to one embodiment.

[0024] The following are marked in the diagram: 1. Support frame; 2. Second slider; 3. Two-way lead screw; 4. Slide groove; 5. Support frame; 6. Hydraulic cylinder; 7. Sliding frame; 8. Mold support base; 81. Notch; 82. Slot plate; 9. Punch; 10. Die; 11. Motor; 12. Insert block; 13. Second electromagnet; 131. Plastic box; 132. Coil; 133. Iron core; 14. Metal plate; 15. First electromagnet; 16. Spring; 17. Circulating water pipe; 18. Circulating water pump; 19. Water tank; 20. Water cooling device. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] like Figures 1-6 As shown, a blow molding machine mold opening and closing device includes a support frame 5. Support frames 1 are welded to the left and right sides of the support frame 5, respectively. Two sliding frames 7 are slidably connected to the upper part of the support frame 1. A hydraulic cylinder 6 is fixedly connected to the support frame 1. The piston rod of the hydraulic cylinder 6 is fixedly connected to the sliding frame 7. A mold support seat 8 that can be separated from the support frame 1 is provided inside the support frame 1. A water cooling device 20 is provided between the mold support seat 8 and the support frame 1. A metal plate 14 is embedded in the front side of the water cooling device 20. A first electromagnet 15 is provided between the sliding frame 7 and the mold support seat 8. A spring 16 is welded to the inner side of the sliding frame 7. The mold support seat 8 is an iron support seat. A double-acting screw 3 is installed at the lower part of the support frame 5. Two second sliders 2 are respectively connected to the upper part of the double-acting screw 3 through screw nuts. A second electromagnet 13 is installed at the upper part of the second sliders 2.

[0030] The first electromagnet 15 is fixedly connected to the lower inner wall of the sliding frame 7. The mold support base 8 is provided with a notch 81. The upper part of the support frame 5 is provided with a slide groove 4. The lower part of the sliding frame 7 is welded with a first slider. The motor 11 for driving the bidirectional lead screw 3 to rotate is fixedly connected to the support frame 1.

[0031] The number of mold support bases 8 is set to two, and the two mold support bases 8 are used to connect the punch 9 and the die 10 respectively.

[0032] Insert blocks 12 are fixedly connected to the punch 9 and the die 10 respectively, and slot plates 82 are fixedly connected to the upper part of the mold support base 8.

[0033] The water cooling device 20 is fixedly connected to the upper side of the inner wall of the sliding frame 7. The water cooling device 20 includes a circulating water pipe 17. One side of the circulating water pipe 17 is embedded in the metal plate 14. One end of the circulating water pipe 17 is connected to the water tank 19. A circulating water pump 18 is connected to the upper part of the water tank 19. One end of the circulating water pipe 17 is connected to the circulating water pump 18.

[0034] The second electromagnet 13 includes a plastic box 131, an iron core 133 is fixedly connected inside the plastic box 131, and a coil 132 is wound around the outside of the iron core 133.

[0035] The above-mentioned mold opening and closing device for a blow molding machine, when production is required, installs the punch 9 and the die 10 on two mold support seats 8 respectively, uses the insert block 12 to accurately align with the slot plate 82, drives the bidirectional lead screw 3 through the motor 11, and fixes the mold support seat 8 through the second electromagnet 13, so that the two second sliders 2 move along the bidirectional lead screw 3 to the designated position.

[0036] Next, the hydraulic cylinder 6 is activated, pushing the sliding frame 7 upward along the support frame 1 until it approaches the mold support seat 8. At this time, the first electromagnet 15 is energized, causing it to generate magnetic force to attract the iron mold support seat 8, thereby achieving a firm connection between the sliding frame 7 and the mold support seat 8. Simultaneously, since the first electromagnet 15 is located on the lower inner wall of the sliding frame 7, the stability and reliability of the connection are ensured.

[0037] After injection molding is completed, the circulating water pump 18 is started, and the circulating water pipe 17 in the water cooling device 20 begins to work, efficiently cooling the mold through the metal plate 14. During this process, the water tank 19 provides cooling water to the system, while the circulating water pipe 17 is responsible for removing heat, ensuring that the mold temperature is within the ideal range.

[0038] When a production cycle ends and the mold needs to be replaced or maintained, first disconnect the power supply to the first electromagnet 15. The magnetic force disappears, and the attraction between the mold support 8 and the sliding frame 7 is released. Due to the presence of the spring 16, in the absence of magnetic force, the spring 16 will automatically push the two apart, creating a certain distance. Then, the operator can easily remove the old mold and install the new mold, repeating the above steps to continue production.

[0039] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An opening and closing mold device of a blow molding machine comprising a support frame (5), characterized in that: The left side and the right side of the support frame (5) are welded with support frames (1), the upper part of the support frame (1) is slidably connected with two sliding frames (7), the support frame (1) is fixedly connected with a hydraulic cylinder (6), the piston rod of the hydraulic cylinder (6) is fixedly connected with the sliding frame (7), the inside of the support frame (1) is provided with a mold support seat (8) which can be separated from it, the mold support seat (8) and the support frame (1) are provided with a water cooling device (20), the front side of the water cooling device (20) is embedded with a metal plate (14), the sliding frame (7) and the mold support seat (8) are provided with a first electromagnet (15), the inside of the sliding frame (7) is welded with a spring (16), the mold support seat (8) is an iron support seat, the lower part of the support frame (5) is provided with a bidirectional screw rod (3), the upper part of the bidirectional screw rod (3) is drivenly connected with two second sliding blocks (2) through screw rod nuts, the upper part of the second sliding block (2) is provided with a second electromagnet (13).

2. A mold opening and closing device of a blow molding machine according to claim 1, wherein: The first electromagnet (15) is fixedly connected to the inner wall of the sliding frame (7), the mold support seat (8) is provided with a notch (81), the upper part of the support frame (5) is provided with a sliding groove (4), the lower part of the sliding frame (7) is welded with a first sliding block, the support frame (1) is fixedly connected with a motor (11) for driving the bidirectional screw rod (3) to rotate.

3. An open and close mold device of a blow molding machine according to claim 1, wherein: The number of the mold support seat (8) is two, and the two mold support seats (8) are respectively used for connecting a male die (9) and a female die (10).

4. A mold opening and closing device of a blow molding machine according to claim 3, wherein: The male die (9) and the female die (10) are respectively fixedly connected with an insertion block (12), and the upper part of the mold support seat (8) is fixedly connected with an insertion slot plate (82).

5. The open and close mold device of a blow molding machine according to claim 1, wherein: The water cooling device (20) is fixedly connected to the inner wall of the sliding frame (7), the water cooling device (20) comprises a circulating water pipe (17), one side of the circulating water pipe (17) is embedded in the metal plate (14), one end of the circulating water pipe (17) is connected to a water tank (19), the upper part of the water tank (19) is connected with a circulating water pump (18), and one end of the circulating water pipe (17) is connected to the circulating water pump (18).

6. An open and close mold device of a blow molding machine according to claim 1, wherein: The second electromagnet (13) comprises a plastic box (131), the inside of the plastic box (131) is fixedly connected with an iron core (133), and the outer side of the iron core (133) is wound with a coil (132).

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