A hand clamping prevention device for a die casting machine

Abstract

The utility model discloses a kind of die casting machine anti-pinch hand devices, including shell, the shell one side below is connected with connecting part, and connecting part is connected with lower die holder, and connecting part is connected with lower die holder between shell with several guide rods, the guide rod is installed with upper die, and cylinder for driving upper die reciprocating movement under guide rod limit is installed in shell.The die casting machine anti-pinch hand device, since the volume of barrel is less than cavity, hydraulic oil or air can quickly push rod body and drive protective door to move, and the moving speed and stroke of protective door are faster than upper die, so that, before upper die die casting operation, shielding is carried out to processing environment in advance, effectively avoid in die casting process, hand or other parts of staff close to die casting environment, greatly reduce the risk of pinching accident, significantly improve the safety of die casting machine operation.

Description

Technical Field

[0001] This utility model relates to the technical field of die casting machine equipment, specifically to a die casting machine anti-pinch device. Background Technology

[0002] Die casting is a common metal processing technology that involves pouring molten metal into a mold and applying pressure to solidify it within the mold, thereby manufacturing various metal parts. The die casting machine is the key equipment for realizing the die casting process, and it mainly consists of a housing, lower mold base, upper mold, cylinder, injection mechanism, and energy storage mechanism.

[0003] During die casting, the upper mold moves towards the lower mold base under the drive of a cylinder to perform the die casting operation. However, existing die casting machines have certain safety hazards during operation, especially during the movement of the upper mold and the die casting operation. Operators' hands or other body parts can easily enter the die casting area, leading to pinching injuries and posing a serious threat to their personal safety.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing die-casting machine. Utility Model Content

[0005] This utility model addresses the problem that existing technical solutions are too simplistic by providing a significantly different solution for an anti-pinch device for die-casting machines, thus resolving the issues raised in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a die-casting machine anti-pinch device, comprising a housing, a connecting part connected to the lower side of one side of the housing, and a lower mold base connected to the connecting part, and a plurality of guide rods connected between the lower mold base and the housing, an upper mold mounted on the guide rods, and a cylinder for driving the upper mold to reciprocate under the limit of the guide rods installed inside the housing, and a brake for emergency stop provided on the cylinder, a protective structure for preventing pinching is provided between the upper mold and the housing, and a connecting assembly is provided on the side of the lower mold base away from the housing, and an injection mechanism and an energy storage mechanism are mounted on the connecting assembly.

[0007] Preferably, a PLC control panel is installed on the housing, and the cylinder, brake, injection mechanism and energy storage mechanism are all electrically connected to the PLC control panel.

[0008] Preferably, there are at least four guide rods, and the guide rods pass through the four corners of the upper mold at equal angles, and the guide rods and the upper mold are slidably connected.

[0009] Preferably, the protective structure includes a cavity, a piston rod, a bifurcated tube, a cylinder, a groove, a rod, a connecting block, a protective door, and an infrared sensor. A cavity is provided on each of the two sides of the housing, and a piston rod is installed in each cavity. The end of each piston rod penetrates the housing and is connected to both sides of the upper mold. Each cavity is connected to a bifurcated tube, and the end of the bifurcated tube is connected to a cylinder. The cylinder is installed in a groove on the outer wall of the housing. A rod is slidably connected inside each cylinder, and each rod is connected to a connecting block. Each connecting block is connected to a corresponding protective door. The protective door is slidably connected to both sides of the housing, and an infrared sensor is installed on the side of each housing near the lower mold base.

[0010] Preferably, the branched tubes are configured as a "Y" shape, and each end of each branched tube is connected to a cylinder, and each cylinder and groove are symmetrically distributed about both sides of the shell.

[0011] Preferably, each infrared sensor on the protective door is electrically connected to a PLC control panel mounted on the housing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-pinch device for die casting machines, through the setting of a protective structure, can simultaneously drive the protective door to close during the process of the cylinder pushing the upper mold to move, thus shielding and protecting the die casting operation area. Since the volume of the cylinder is smaller than that of the cavity, hydraulic oil or air can quickly push the rod to move the protective door, and the moving speed and stroke of the protective door are faster than those of the upper mold. Therefore, the processing environment is shielded in advance before the die casting operation of the upper mold, effectively preventing hands or other parts of the workers from getting close to the die casting environment during the die casting process, greatly reducing the risk of pinching accidents, and significantly improving the safety of die casting machine operation.

[0013] Infrared sensors are installed at equal intervals on both sides of the protective door. When the protective door comes into contact with an obstacle, such as a worker's hand, during the closing process, the infrared rays of the infrared sensors are blocked, and a signal is quickly transmitted to the PLC control panel. After receiving the signal, the PLC control panel immediately issues a command to the brake, causing the cylinder to stop its pushing stroke and avoid injuring the worker. This intelligent protection mechanism based on infrared sensing and PLC control can detect dangerous situations in a timely and accurate manner and take braking measures, further enhancing the safety protection performance of the device and making the operation of the die-casting machine more intelligent, safe and reliable. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a frontal cross-sectional view of the present invention.

[0016] Figure 3 This is a top view cross-sectional structural diagram of the protective door of this utility model in the open state;

[0017] Figure 4 This is a top view cross-sectional structural diagram of the protective door of this utility model in the closed state.

[0018] In the diagram: 1. Shell; 2. Connecting part; 3. Lower mold base; 4. Guide rod; 5. Upper mold; 6. Cylinder; 7. Brake; 8. Protective structure; 801. Cavity; 802. Piston rod; 803. Branch pipe; 804. Cylinder; 805. Groove; 806. Rod; 807. Connecting block; 808. Protective door; 809. Infrared sensor; 9. Connecting assembly; 10. Injection mechanism; 11. Energy storage mechanism. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an anti-pinch device for a die-casting machine, comprising a housing 1, a connecting part 2, a lower mold base 3, a guide rod 4, an upper mold 5, a cylinder 6, a brake 7, a protective structure 8, a cavity 801, a piston rod 802, a bifurcated pipe 803, a cylinder 804, a groove 805, a rod 806, a connecting block 807, a protective door 808, an infrared sensor 809, a connecting assembly 9, an injection mechanism 10, and an energy storage mechanism 11. The connecting part 2 is connected to the lower side of one side of the housing 1, and... The lower mold base 3 is connected to the connecting part 2, and a number of guide rods 4 are connected between the lower mold base 3 and the housing 1. The upper mold 5 is installed on the guide rods 4, and the housing 1 is equipped with a cylinder 6 for driving the upper mold 5 to reciprocate under the limit of the guide rods 4. The cylinder 6 is equipped with a brake 7 for emergency stop. A protective structure 8 for preventing hand pinching is provided between the upper mold 5 and the housing 1. A connecting component 9 is provided on the side of the lower mold base 3 away from the housing 1, and an injection mechanism 10 and an energy storage mechanism 11 are installed on the connecting component 9.

[0021] A PLC control panel is installed on the housing 1, and the cylinder 6, brake 7, injection mechanism 10 and energy storage mechanism 11 are all electrically connected to the PLC control panel.

[0022] There are at least four guide rods 4, and the guide rods 4 pass through the four corners of the upper mold 5 at equal angles, and the guide rods 4 and the upper mold 5 are slidably connected.

[0023] The protective structure 8 includes a cavity 801, a piston rod 802, a bifurcated pipe 803, a cylinder 804, a groove 805, a rod 806, a connecting block 807, a protective door 808, and an infrared sensor 809. A cavity 801 is provided on each of the two sides of the housing 1, and a piston rod 802 is installed in each cavity 801. The end of each piston rod 802 penetrates the housing 1 and is connected to both sides of the upper mold 5. Each cavity 801 is connected to a bifurcated pipe 803. The end of the branch pipe 803 is connected to a cylinder 804, and the cylinder 804 is installed in a groove 805 opened on the outer wall of the housing 1. A rod 806 is slidably connected in each cylinder 804, and a connecting block 807 is connected to each rod 806. Each connecting block 807 is connected to a corresponding protective door 808. The protective door 808 is slidably connected to both sides of the housing 1, and an infrared sensor 809 is installed on the side of each housing 1 near the lower mold base 3.

[0024] The branch tube 803 is configured as a "Y" shaped structure, and each end of the branch tube 803 is connected to a cylinder 804, and each cylinder 804 and groove 805 are symmetrically distributed about both sides of the shell 1.

[0025] Each infrared sensor 809 on the protective door 808 is electrically connected to the PLC control panel mounted on the housing 1.

[0026] Working principle: According to Figure 1 As shown, when this device is working, the cylinder 6 starts and pushes the upper mold 5 closer to the lower mold base 3. During this process, the movement of the upper mold 5 by the cylinder 6 will drive the piston rod 802 to move in the cavity 801 towards the lower mold base 3, squeezing the hydraulic oil or air in the cavity 801 into the bifurcation pipe 803, and then transporting it to the cylinder 804 through the bifurcation pipe 803. This causes the rod 806 in the cylinder 804 to move outward, which will push the protective door 808 connected to the end of the rod 806 through the connecting block 807 to move and close in the direction of the lower mold base 3, thus achieving a shielding and protective effect.

[0027] Since the volume of the cylinder 804 is smaller than that of the cavity 801, the hydraulic oil entering the cylinder 804 will move faster than the moving speed and stroke of the upper mold 5, pushing the rod 806 to move the protective door 808 closer to the lower mold base 3. Therefore, the processing environment can be shielded and protected before the die casting operation of the upper mold 5, so as to avoid the danger of hands or other parts of the workers getting close to the die casting environment during the die casting process.

[0028] Secondly, by equidistantly spaced infrared sensors 809 on the sides of the protective door 808, when the protective door 808 comes into contact with an obstacle, such as a worker's hand, the infrared rays of the infrared sensors 809 are blocked during the aforementioned moving and closing process. This blocks the infrared rays and transmits a signal to the PLC control panel, which then sends a command to the brake 7, causing the cylinder 6 to pause its pushing stroke and preventing injury to the worker. This is the working principle of the anti-pinch device for the die-casting machine.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hand-pinch prevention device for a die-casting machine, comprising a housing (1), characterized in that: A connecting part (2) is connected to the lower side of the housing (1), and the connecting part (2) is connected to the lower mold base (3). Several guide rods (4) are connected between the lower mold base (3) and the housing (1). An upper mold (5) is installed on the guide rods (4). A cylinder (6) is installed inside the housing (1). The cylinder (6) drives the upper mold (5) to reciprocate along the guide rods (4) through the piston rod. A brake (7) is provided on the cylinder (6). The brake (7) can quickly brake the piston rod of the cylinder (6) in an emergency to stop the movement of the upper mold (5). A protective structure (8) for preventing hand pinching is provided between the upper mold (5) and the housing (1). A connecting assembly (9) is provided on the side of the lower mold base (3) away from the housing (1). An injection mechanism (10) and an energy storage mechanism (11) are installed on the connecting assembly (9).

2. The anti-pinch device for a die-casting machine according to claim 1, characterized in that: A PLC control panel is installed on the housing (1). The cylinder (6), brake (7), injection mechanism (10) and energy storage mechanism (11) are all electrically connected to the PLC control panel. The PLC control panel can control the extension and retraction of the cylinder (6), the braking of the brake (7), the injection action of the injection mechanism (10) and the energy release of the energy storage mechanism (11) according to the preset program and sensor feedback signal, so as to realize the automated control of the die casting process.

3. The anti-pinch device for a die-casting machine according to claim 1, characterized in that: The guide rod (4) is provided with at least four rods, and the guide rod (4) passes through the four corners of the upper mold (5) at equal angles. The guide rod (4) and the upper mold (5) are slidably connected. The setting of the guide rod (4) can improve the stability and accuracy of the upper mold (5) during the movement process and reduce the safety hazards caused by mold displacement.

4. The anti-pinch device for a die-casting machine according to claim 1, characterized in that: The protective structure (8) includes a cavity (801), a piston rod (802), a bifurcated tube (803), a cylinder (804), a groove (805), a rod (806), a connecting block (807), a protective door (808), and an infrared sensor (809). A cavity (801) is provided on each side of the housing (1), and a piston rod (802) is installed in each cavity (801). The end of each piston rod (802) penetrates the housing (1) and is connected to both sides of the upper mold (5). Each cavity (801) is connected to a bifurcated tube (809). 3), and the end of the branch pipe (803) is connected to a cylinder (804), and the cylinder (804) is installed in a groove (805) opened on the outer wall of the housing (1). Each cylinder (804) is slidably connected to a rod (806), and each rod (806) is connected to a connecting block (807), and each connecting block (807) is connected to a corresponding protective door (808). The protective door (808) is slidably connected to both sides of the housing (1), and an infrared sensor (809) is installed on the side of each housing (1) near the lower mold base (3).

5. The anti-pinch device for a die-casting machine according to claim 4, characterized in that: The bifurcation tube (803) is configured as a "Y" shaped structure, and each bifurcation tube (803) is connected to a cylinder (804) at both ends, and each cylinder (804) and groove (805) are symmetrically distributed about both sides of the shell (1).

6. The anti-pinch device for a die-casting machine according to claim 4, characterized in that: The infrared sensor (809) is electrically connected to the PLC control panel installed on the housing (1). When the infrared sensor (809) detects a human body signal, it can quickly trigger the brake (7) to brake and stop the movement of the upper mold (5) through the PLC control panel, thereby effectively preventing the occurrence of hand pinching accidents.

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