A flask opening device

Abstract

The utility model belongs to foundry machinery field, especially relate to a sand box opening device, a sand box opening device, including opening fixed frame, switch fixed frame, pull block, opening pull fork, pin shaft, pressing plate, small shaft, flanging bearing and cylinder, opening pull fork is fixed on opening fixed frame through small shaft and flanging bearing, pull block is fixed in opening pull fork front end, opening pull fork rear end and cylinder head are connected through cylinder rod ear ring, and the tail of cylinder and opening fixed frame are fixed after being passed through pin shaft with pressing plate, the utility model provides a sand box opening device which long service life, simple structure, high security, can accurate opening box hook.

Description

Technical Field

[0001] This utility model belongs to the field of casting machinery, and in particular relates to a sand box opening device. Background Technology

[0002] With the increasing demand for automation in modern production, the requirements for casting equipment are becoming increasingly stringent, especially the precision requirements for all moving parts. An existing sand box opening device separates the upper and lower sand boxes on the casting and cooling line. The key challenges are ensuring the device accurately opens the sand box hooks, has a longer service life, facilitates easy and quick replacement of parts, and provides adequate safety protection. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a sand box opening device with long service life, simple structure, high safety, and the ability to accurately open the box hook.

[0004] A sand box opening device includes an opening fixing frame, a switch fixing frame, a pull block, an opening pull fork, a pin, a pressure plate, a small shaft, a flange bearing, and a cylinder. The opening pull fork is fixed to the opening fixing frame via the small shaft and the flange bearing. The pull block is fixed to the front end of the opening pull fork. The rear end of the opening pull fork is connected to the cylinder head via a cylinder rod clevis. The cylinder tail is fixed to the opening fixing frame by the pin and the pressure plate.

[0005] Furthermore, two proximity switches are installed on the switch mounting bracket and fixed to the opening and retracting positions on the opening bracket, respectively. When the opening fork rotates below the proximity switch, the signal for the next action is sent after the opening fork is detected.

[0006] The advantages of the sand box opening device disclosed in this utility model compared with the prior art are as follows: While ensuring production and safety, this mechanism controls the angle of the opening fork by extending the cylinder, which in turn pushes the hook of the lower sand box, causing the hook to disengage from the upper sand box and completing the separation of the upper and lower sand boxes. To ensure that the hook is pushed into place and the opening fork returns to its original position, proximity switches are placed at the original position of the opening fork when the cylinder is retracted and at the maximum displacement position of the opening fork when the cylinder is extended to its maximum extent. These switches are used to detect whether the opening fork is in place.

[0007] This design is simple in structure, saves time, and is easy to assemble and disassemble. For areas with significant wear on the opening fork, only the lever at the front of the opening fork needs to be replaced; the extension and retraction of the cylinder provides sufficient energy for the opening fork to push the box hook. Attached Figure Description

[0008] Figure 1 This is a front view of the present invention; Figure 2This is a bottom view of the present invention; Figure 3 This is a side view of the present invention; In the diagram: 1. Box opening bracket, 2. Switch bracket 1, 3. Pull block, 4. Box opening pull fork, 5. Cylinder, 6. Pin, 7. Pressure plate, 8. Small shaft, 9. Flanged bearing, 10. Switch bracket 2. Detailed Implementation

[0009] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided by this utility model.

[0010] A sand box opening device includes an opening fixing frame 1, a switch fixing frame 12, a pull block 3, an opening pull fork 4, a cylinder 5, a pin 6, a pressure plate 7, a small shaft 8, a flanged bearing 9, and a switch fixing frame 210. The opening pull fork 4 is fixed to the opening fixing frame 1 by the small shaft 8 and the flanged bearing 9, allowing the opening pull fork 4 to rotate around a fixed point on the opening fixing frame 1. The pull block 3 is installed at the front end of the opening pull fork 4, and the rear end is connected to the cylinder head 5 of the cylinder 5 through a cylinder rod lug. The cylinder tail of the cylinder 5 is connected to the opening fixing frame 1 through the small shaft 6 and the pressure plate 7.

[0011] Furthermore, two proximity switches are installed on the switch mounting brackets 1 and 2 and the switch mounting bracket 2 10, respectively, and are fixed on the opening bracket 1 at the opening position and the retracted position after opening. When the opening fork 4 rotates below the proximity switch, the opening fork 4 is detected and a signal for the next action is sent.

[0012] The working principle of this utility model is as follows: During the operation of the sand box opening device, the opening fork 4 is fixed to the opening frame 1 via the small shaft 8 and the flange bearing 9. The opening fork 4 is connected to the cylinder head of the cylinder 5 via the rod lug. The extension and retraction of the cylinder 5 controls the opening fork 4 to rotate at a certain angle around the small shaft 8, so that the pulling block 3 on the opening fork 4 contacts the box hook on the lower sand box, thereby pushing the box hook to separate the box hook from the upper sand box and thus separating the upper and lower boxes. The extension and retraction of the cylinder 5 and the proximity switch on the switch frame provide stable tension and safety for the sand box opening device, enabling the opening device to complete the separation process of the upper and lower sand boxes efficiently, safely and accurately.

[0013] The advantages of the present invention's disclosed sand box opening device compared to existing technologies are as follows: (1) Under the premise of ensuring production and safety, the angle of the opening fork can be adjusted appropriately by the extension and retraction of the cylinder, so that the pulling block is in close contact with the sand box hook. The proximity switch on the switch fixing frame effectively prevents the danger of opening the box if the hook is not pushed into place or the opening fork is not returned to its original position, further improving the stability and safety of the opening process of the upper and lower sand boxes.

[0014] (2) This design has a simple structure, saves time, and is easy to disassemble and assemble. For the box-opening fork with a large degree of wear, only the pull block on it needs to be replaced; the extension and retraction of the cylinder provides a stable tension force for the robot.

[0015] The above description provides a detailed account of one embodiment of the present utility model. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the claims of the present utility model should fall within the patent coverage of the present utility model.

Claims

1. A sand box opening device, comprising an opening fixing frame, a switch fixing frame, a pull block, an opening pull fork, a pin, a pressure plate, a small shaft, a flange bearing, and a cylinder; the opening pull fork is fixed to the opening fixing frame via the small shaft and the flange bearing, the pull block is fixed to the front end of the opening pull fork, the rear end of the opening pull fork is connected to the cylinder head via a cylinder rod clevis, and the cylinder tail is fixed to the opening fixing frame by the pin passing through it and by the pressure plate.

2. The sand box opening device according to claim 1, characterized in that: The switch mounting bracket is equipped with two proximity switches, which are respectively fixed on the unpacking mounting bracket at the unpacking position and the retracted position after unpacking. When the unpacking fork rotates below the proximity switch, the unpacking fork is detected and a signal for the next action is sent.

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