Energy-saving injection molding equipment with quick mold change

Abstract

The utility model discloses a kind of energy-saving injection molding equipment of quick die change, belong to injection molding equipment technical field, the utility model aims at solving the problem of long time-consuming of existing technology injection molding equipment die change process cumbersome, this equipment includes base, extrusion structure, ejection structure and mould assembly, it is also provided with the dismounting assembly for locking or releasing mould assembly, and cooling assembly for cooling the mould assembly, the dismounting assembly includes hollow frame, hydraulic cylinder, connecting frame, lower pressing plate and connecting plate, hydraulic cylinder drive connecting frame sliding, and through the connecting plate linkage lower pressing plate rotation of rotation connection, to realize the quick locking and release of mould assembly.The utility model is through above-mentioned automation and quick connection structure, significantly shorten die change time, reduce the labor intensity of operator, improve production efficiency, with the beneficial effects of reliable structure, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to an energy-saving injection molding equipment with rapid mold change. Background Technology

[0002] Injection molding equipment is a core piece of equipment widely used in the plastics processing industry. It heats and melts plastic raw materials, injects them under high pressure into a mold cavity, and then cools and solidifies them to obtain plastic products of the desired shape. In actual production, in order to meet the manufacturing needs of different products, it is necessary to frequently change molds of different specifications and shapes.

[0003] In traditional injection molding equipment, the mold is usually fixed to the moving and fixed mold plates of the equipment by multiple bolts or pressure plates. When the mold needs to be replaced, the operator must use tools to manually loosen and remove these bolts or pressure plates one by one before the old mold can be lifted away; when installing a new mold, the reverse steps need to be repeated, after aligning the new mold, all the fixing bolts need to be manually tightened one by one.

[0004] This method of mold fixing and disassembly, which relies entirely on manual operation, is extremely cumbersome and time-consuming. Especially for medium and large molds, which have numerous and large fixing bolts, the disassembly and assembly process not only requires a long operation time, leading to excessive equipment downtime, but also significantly increases the labor intensity of operators. This inefficient mold changeover process has become a major bottleneck restricting the entire injection molding production line from increasing capacity and responding quickly to market changes. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an energy-saving injection molding equipment with rapid mold change, aiming to improve the problem of low production efficiency caused by the cumbersome disassembly and assembly process and long time consumption when changing molds in the existing injection molding equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An energy-saving injection molding machine with quick mold change capability includes: a base, an extrusion structure and an ejection structure mounted on the base, and a mold assembly disposed between the extrusion structure and the ejection structure, the mold assembly including a first mold and a second mold that cooperate with each other; and a disassembly assembly for locking or releasing the mold assembly.

[0008] The disassembly assembly includes a hollow frame, a hydraulic cylinder mounted on the hollow frame, a connecting frame slidably connected to the inner wall of the hollow frame, a lower pressure plate, and a connecting plate;

[0009] The output end of the hydraulic cylinder is fixedly connected to the connecting frame, and the connecting frame is rotatably connected to the lower pressure plate through the connecting plate. The lower pressure plate is configured to engage or disengage with the mold assembly on one side. Through this hydraulically driven linkage structure combination, the automatic and rapid locking and releasing of the mold assembly is realized.

[0010] Preferably, one end of the lower pressure plate is rotatably connected to the hollow frame, and both ends of the connecting plate are rotatably connected to the side wall of the connecting frame and the lower pressure plate, respectively, forming a stable four-bar linkage mechanism.

[0011] Preferably, the disassembly assembly further includes a connecting shaft and a bearing. The connecting shaft passes through the interior of the connecting frame, and the bearing is sleeved on the outer wall of the connecting shaft and rollably abuts against the inner wall of the hollow frame to reduce sliding friction and improve motion stability.

[0012] Preferably, the energy-saving injection molding equipment with quick mold change further includes a cooling component for cooling the mold assembly. The cooling component includes a connecting pipe, a limiting post slidably disposed on the outer wall of the connecting pipe, a spring sleeved on the outer wall of the limiting post, and a pull plate fixedly connected to the limiting post. The outer wall of the connecting pipe is provided with a slot for engaging with the limiting post, thus forming a quick connection mechanism.

[0013] Preferably, in an embodiment including a cooling assembly, the cooling assembly further includes a hollow block fixed to the mold assembly, the hollow block having a cavity for accommodating and sliding the limiting post and the spring.

[0014] Preferably, the pull plate is slidably inserted through the hollow block and extends to its outside, making it convenient for the operator to pull it from the outside.

[0015] Preferably, the cooling assembly further includes a heat dissipation pipe disposed inside the mold assembly, the hollow block is connected to the heat dissipation pipe, and the connecting pipe is used to detachably connect to the hollow block to form a complete cooling circuit.

[0016] Preferably, the heat dissipation pipes are distributed in a U-shape to achieve a more uniform cooling effect.

[0017] Preferably, the energy-saving injection molding equipment with quick mold change also includes a feed tank disposed above the extrusion structure.

[0018] Preferably, the energy-saving injection molding equipment with quick mold change also includes wires for controlling the equipment to turn on or off.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, by setting up a disassembly assembly that drives the connecting frame, connecting plate and lower pressure plate in linkage by a hydraulic cylinder, the problem of having to manually disassemble and assemble multiple fixing bolts when changing molds in the prior art is solved. This process is cumbersome, time-consuming and labor-intensive. It achieves the effect of quickly unlocking and locking the mold assembly, greatly shortening the mold change time and improving production efficiency.

[0021] 2. In this utility model, by setting a cooling assembly consisting of a pull plate, a limiting post, a spring, and a slot, the problem of traditional cooling water pipes using threaded connections being inconvenient to disassemble and assemble, affecting the overall mold changing efficiency, is solved. This enables quick connection and disconnection of the cooling pipes, making operation convenient and sealing reliable, further improving the overall speed and convenience of mold changing operations. Attached Figure Description

[0022] Figure 1 This is a perspective view of an energy-saving injection molding equipment with rapid mold changing proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the top structure of the base of an energy-saving injection molding equipment with rapid mold changing, as proposed in this utility model.

[0024] Figure 3 This is a schematic cross-sectional view of the mold assembly structure of an energy-saving injection molding equipment with rapid mold changing proposed in this utility model.

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the side wall structure of a mold assembly for a quick-change, energy-saving injection molding equipment proposed in this utility model.

[0027] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0028] Legend:

[0029] 1. Base; 2. Feed tank; 3. Wire; 4. Extrusion structure; 5. Ejection structure; 6. Mold assembly; 601. First mold; 602. Second mold; 7. Disassembly assembly; 701. Hydraulic cylinder; 702. Hollow frame; 703. Connecting frame; 704. Connecting shaft; 705. Bearing; 706. Connecting plate; 707. Lower pressure plate; 8. Cooling assembly; 801. Heat dissipation pipe; 802. Hollow block; 803. Pull plate; 804. Limiting post; 805. Spring; 806. Slot; 807. Connecting pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-6 An embodiment of this utility model is provided: an energy-saving injection molding equipment with quick mold change, including a base 1, an extrusion structure 4 and an ejection structure 5 installed on the base 1, and the equipment also includes a feed tank 2 disposed on the extrusion structure 4 and an electric wire 3 for controlling the opening or closing of the equipment.

[0032] A die assembly 6 is disposed between the extrusion structure 4 and the ejection structure 5. The die assembly 6 includes a first die 601 and a second die 602 that cooperate with each other. The first die 601 is fixedly connected to the ejection structure 5, and the second die 602 is fixedly connected to the extrusion structure 4. In order to achieve quick replacement of the die assembly 6, the equipment also includes a disassembly assembly 7 for locking or releasing the die assembly 6, and a cooling assembly 8 for cooling the die assembly 6.

[0033] The disassembly assembly 7 includes a hollow frame 702, a hydraulic cylinder 701, a connecting frame 703, a lower pressure plate 707, and a connecting plate 706. The hydraulic cylinder 701 is installed on the hollow frame 702, and the connecting frame 703 is slidably connected to the inner wall of the hollow frame 702. The output end of the hydraulic cylinder 701 is fixedly connected to the connecting frame 703, thereby driving the connecting frame 703 to slide along the inner wall of the hollow frame 702.

[0034] One end of the lower pressure plate 707 is rotatably connected to the hollow frame 702, and both ends of the connecting plate 706 are rotatably connected to the side wall of the connecting frame 703 and the lower pressure plate 707, respectively. The connecting frame 703 is driven to move by the hydraulic cylinder 701, and then the lower pressure plate 707 is driven to rotate by the connecting plate 706, so that one side of the lower pressure plate 707 can be engaged or disengaged from the mold assembly 6.

[0035] To improve the smoothness of sliding, the disassembly assembly 7 also includes a connecting shaft 704 and a bearing 705. The connecting shaft 704 passes through the inside of the connecting frame 703, and the bearing 705 is sleeved on the outer wall of the connecting shaft 704. The bearing 705 rollably abuts against the inner wall of the hollow frame 702.

[0036] Cooling assembly 8 includes heat dissipation pipes 801 disposed inside mold assembly 6. The heat dissipation pipes 801 are U-shaped and communicate with a hollow block 802 fixed to mold assembly 6. A limiting post 804 is slidably disposed on the outer wall of a connecting pipe 807 for detachable connection to the hollow block 802. A spring 805 is sleeved on the outer wall of the limiting post 804. A pull plate 803, fixedly connected to the limiting post 804, slidably passes through the hollow block 802 and extends to its exterior. An opening is provided inside the hollow block 802 to accommodate the limiting post 804 and the spring 805. The cavity of 05, and the outer wall of the connecting pipe 807 is provided with a corresponding slot 806 for engaging with the limiting post 804. In the assembled state, the connecting pipe 807 is inserted into the hollow block 802. By pulling the pull plate 803, the limiting post 804 is moved and engaged in the slot 806. At the same time, the spring 805 is compressed. This locking connection structure formed by the limiting post 804 and the slot 806 ensures that the connection of the cooling pipe is quick, the locking is reliable and the sealing is good, which greatly simplifies the pipe disassembly and assembly operation when changing the mold.

[0037] To make the movement of the disassembly component 7 more precise and stable, one end of the lower pressure plate 707 is rotatably connected to the hollow frame 702, and both ends of the connecting plate 706 are rotatably connected to the side wall of the connecting frame 703 and the lower pressure plate 707, respectively. This four-bar structure with double rotation connection ensures that the lower pressure plate 707 can generate a preset rotation trajectory when driven, thereby realizing reliable engagement and release of the mold component 6.

[0038] To further improve the smoothness of sliding and load-bearing capacity of the connecting frame 703 within the hollow frame 702, the disassembly assembly 7 also includes a connecting shaft 704 and a bearing 705. The connecting shaft 704 passes through the interior of the connecting frame 703 to enhance its rigidity, and the bearing 705 is sleeved on the outer wall of the connecting shaft 704 and rolls against the inner wall of the hollow frame 702. By replacing sliding friction with rolling friction, the motion resistance is effectively reduced. The cooling assembly 8 also includes a hollow block 802 fixed to the mold assembly 6. The hollow block 802 has a cavity for the accommodating and sliding of the limiting post 804 and the spring 805, providing a mounting base and working space for the quick-connect mechanism. For ease of operation, the pull plate 803 slides through the hollow block. 802 extends to its exterior, allowing operators to easily pull the pull plate 803 from the outside. To achieve the cooling function of the mold, the cooling assembly 8 also includes a heat dissipation pipe 801 disposed inside the mold assembly 6. The hollow block 802 is connected to the heat dissipation pipe 801, and the connecting pipe 807 is used to detachably connect to the hollow block 802, forming a complete cooling medium flow circuit. The heat dissipation pipe 801 is preferably distributed in a U-shape. This layout helps the cooling medium to flow more evenly inside the mold assembly 6, improving the cooling efficiency. The equipment also includes a feed tank 2 disposed above the extrusion structure 4 for supplying raw materials to the extrusion structure 4. The equipment also includes an electric wire 3 for controlling the opening or closing of the equipment.

[0039] Working principle: When the equipment performs injection molding, material is first added into the extrusion structure 4 through the feed tank 2, and the extrusion structure 4 heats and plasticizes the material; then the extrusion structure 4 and the ejection structure 5 move closer to each other, so that the second mold 602 and the first mold 601 fixed on them close together, and the extrusion structure 4 injects the molten material into the cavity of the mold assembly 6; then the cooling assembly 8 starts to work, and the cooling medium enters the hollow block 802 through the connecting pipe 807, and then flows into the U-shaped heat dissipation pipe 801 to cool the mold assembly 6 and solidify the product. Finally, the mold is opened and the product is ejected through the ejection structure 5.

[0040] When it is necessary to replace mold assembly 6, first start the hydraulic cylinder 701 in the disassembly assembly 7. The hydraulic cylinder 701 drives the connecting frame 703 to slide on the inner wall of the hollow frame 702. During this process, the connecting shaft 704 and the bearing 705 provide guidance and support for the sliding. The movement of the connecting frame 703 drives the lower pressure plate 707 to rotate around its rotation connection point through the connecting plate 706, so that the locking end of the lower pressure plate 707 is disengaged from the locking state of mold assembly 6, thereby quickly unlocking the mold. When installing a new mold, the hydraulic cylinder 701 is operated in reverse, and the lower pressure plate 707 rotates to the locking position to lock the mold assembly 6.

[0041] During the disassembly or installation of mold assembly 6, when the cooling pipes need to be disassembled or reassembled, the operator pulls the pull plate 803 of the cooling assembly 8 outward. The pull plate 803 drives the limiting post 804 to slide in the cavity of the hollow block 802 and compress the spring 805, so that the limiting post 804 disengages from the slot 806 on the outer wall of the connecting pipe 807. At this time, the connecting pipe 807 can be quickly pulled out. Conversely, when the connecting pipe 807 is inserted into the hollow block 802, its end pushes the limiting post 804. When the slot 806 reaches the corresponding position, under the action of the spring 805, the limiting post 804 automatically engages with the slot 806, instantly completing the connection and sealing of the pipes.

Claims

1. An energy-saving injection molding equipment with rapid mold change, comprising: The base (1), and the extrusion structure (4) and the ejection structure (5) mounted on the base (1), and also include a mold assembly (6) disposed between the extrusion structure (4) and the ejection structure (5). The mold assembly (6) includes a first mold (601) and a second mold (602) that cooperate with each other; The invention is characterized by further comprising: a disassembly assembly (7) for locking or releasing the mold assembly (6), the disassembly assembly (7) comprising a hollow frame (702), a hydraulic cylinder (701) mounted on the hollow frame (702), a connecting frame (703) slidably connected to the inner wall of the hollow frame (702), a lower pressure plate (707), and a connecting plate (706), the output end of the hydraulic cylinder (701) being fixedly connected to the connecting frame (703), the connecting frame (703) being rotatably connected to the lower pressure plate (707) through the connecting plate (706), and the lower pressure plate (707) being configured to engage or disengage from the mold assembly (6) on one side.

2. The energy-saving injection molding equipment with rapid mold change according to claim 1, characterized in that, One end of the lower pressure plate (707) is rotatably connected to the hollow frame (702), and both ends of the connecting plate (706) are rotatably connected to the side wall of the connecting frame (703) and the lower pressure plate (707), respectively.

3. The energy-saving injection molding equipment with rapid mold change according to claim 1, characterized in that, The disassembly assembly (7) further includes a connecting shaft (704) and a bearing (705); the connecting shaft (704) passes through the interior of the connecting frame (703), and the bearing (705) is sleeved on the outer wall of the connecting shaft (704) and rollably abuts against the inner wall of the hollow frame (702).

4. The energy-saving injection molding equipment with rapid mold change according to claim 1, characterized in that, The device further includes a cooling assembly (8) for cooling the mold assembly (6); the cooling assembly (8) includes a connecting pipe (807), a limiting post (804) slidably disposed on the outer wall of the connecting pipe (807), a spring (805) sleeved on the outer wall of the limiting post (804), and a pull plate (803) fixedly connected to the limiting post (804). The outer wall of the connecting pipe (807) is provided with a slot (806) for engaging with the limiting post (804).

5. The energy-saving injection molding equipment with rapid mold change according to claim 4, characterized in that, The cooling assembly (8) also includes a hollow block (802) fixed to the mold assembly (6); the hollow block (802) has a cavity for the limiting post (804) and the spring (805) to be accommodated and slid.

6. The energy-saving injection molding equipment with rapid mold change according to claim 5, characterized in that, The pull plate (803) slides through the hollow block (802) and extends to its exterior.

7. The energy-saving injection molding equipment with rapid mold change according to claim 5, characterized in that, The cooling assembly (8) further includes a heat dissipation pipe (801) disposed inside the mold assembly (6); the hollow block (802) is connected to the heat dissipation pipe (801), and the connecting pipe (807) is used to be detachably connected to the hollow block (802).

8. The energy-saving injection molding equipment with rapid mold change according to claim 7, characterized in that, The heat dissipation pipes (801) are distributed in a U-shape.

9. The energy-saving injection molding equipment with rapid mold change according to claim 1, characterized in that, The device also includes a feed tank (2) disposed above the extrusion structure (4).

10. The energy-saving injection molding equipment with rapid mold change according to claim 1, characterized in that, The device also includes wires (3) for controlling the device to be turned on or off.

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