A multi-specification sand box positioning device for a foundry automatic molding line

Abstract

The utility model relates to the technical field of position detection especially is a kind of casting automatic modeling line multi-specification sand box positioning device, and the weight of empty sand box makes positioning claw self-lowering, after empty sand box is taken away, again using spring elastic force reset, the recess structure used by positioning claw and the positioning block of sand box can be perfectly attached, make positioning more accurate, avoid the occurrence of the situation that sand box is not accurately positioned due to inertial force;Including conveying mechanism;Still including empty sand box and positioning mechanism, empty sand box is placed on conveying mechanism and is forwarded, and positioning mechanism is installed on conveying mechanism and positions empty sand box.

Description

Technical Field

[0001] This utility model relates to the technical field of position detection, and in particular to a multi-specification sand box positioning device for an automatic casting molding line. Background Technology

[0002] Vacuum molding is a pure pressure molding method. Its basic principle is to fill the sand box with molding sand and other materials, seal both sides of the sand box with plastic film, and then evacuate the entire sand box to create a vacuum. The molding sand is formed by the pressure difference between the inside and outside of the sand box.

[0003] Existing sandbox positioning devices, such as the pneumatic sandbox positioning device for a sandbox molding line disclosed in utility model patent application number 202421242278.5, mainly include a base and a sandbox body. Both the upper and lower ends of the sandbox body are equipped with enclosures. The top of the base is equipped with a support component for supporting and rotating the sandbox body, and the sandbox body is mounted on the top of the support component. Positioning components for calibrating the sandbox body can be detachably installed on both sides of the enclosures. In use, the sandbox body is pushed by the pushing component and the positioning component instead of by human power, and the sandbox body can be turned by the support component.

[0004] However, since there is no stable positioning device between sand boxes of different specifications and the roller conveyor, the sand box will swing back and forth due to inertia after the specifications of the sand box change, and the position will be deviated. Most of the existing positioning mechanisms are not stable enough and have a high failure rate, especially the positioning is inaccurate, which affects production efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a multi-specification sand box positioning device for an automatic casting molding line. The positioning claw descends automatically by the weight of the empty sand box. After the empty sand box is removed, it is reset by the spring force. The groove structure used by the positioning claw can perfectly fit the positioning block of the sand box, making the positioning more accurate and avoiding the situation where the sand box is inaccurately positioned due to inertial force.

[0006] This utility model discloses a multi-specification sand box positioning device for an automatic casting molding line, including a conveying mechanism; it also includes an empty sand box and a positioning mechanism. The empty sand box is placed on the conveying mechanism and conveyed forward. The positioning mechanism is installed on the conveying mechanism to position the empty sand box. The conveying mechanism drives the empty sand box to be conveyed forward. After the empty sand box moves to the position of the positioning mechanism, the empty sand box is fixed thereon, and the conveying mechanism stops conveying forward.

[0007] Preferably, the conveying mechanism includes a conveying platform and multiple sets of motorized rollers. The conveying platform is installed on the working surface, and a drive motor and control cabinet are provided on the conveying platform. The multiple sets of motorized rollers are rotatably installed on the conveying platform and are connected by a synchronous transmission device. The drive motor drives the multiple sets of motorized rollers to rotate synchronously. The empty sand box is conveyed onto the multiple sets of motorized rollers, and the synchronous rotation of the multiple sets of motorized rollers drives the empty sand box forward.

[0008] Preferably, the positioning mechanism includes a mounting bracket, a push rod, a compression spring, a positioning claw, and a proximity switch. The mounting bracket is installed on the conveyor table, the push rod is mounted on the mounting bracket, the compression spring is fitted onto the push rod, the bottom end of the positioning claw is connected to the top end of the push rod, and the proximity switch is installed on the conveyor table. After the empty sand box moves to the designated position, it squeezes the positioning claw downwards. The positioning claw pushes the push rod down, the push rod triggers the proximity switch, and the proximity switch transmits an electrical signal to the control cabinet. The control cabinet controls the drive motor to stop running, the empty sand box is stuck in the positioning claw, and the compression spring pushes the push rod and the positioning claw to reset, ensuring the accuracy of positioning.

[0009] Preferably, the positioning claw also includes a beveled front side with a groove in the middle and a straight rear side; the beveled front side of the positioning claw facilitates the empty sand box to squeeze the positioning claw, and the empty sand box continues to move forward under the action of inertial force, so that the empty sand box enters the groove, and the straight rear side prevents the empty sand box from moving forward, thus accurately positioning the empty sand box.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the conveying mechanism drives the empty sand box to be conveyed, and after the empty sand box moves to the position of the positioning mechanism, the empty sand box is fixed thereon, and the conveying mechanism stops conveying forward. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a front view structural schematic diagram of the conveying mechanism of this utility model; Figure 3 This is a front view structural diagram of the positioning mechanism of this utility model; Figure 4 This is a partially enlarged front view schematic diagram of the positioning mechanism of this utility model.

[0012] The attached diagram is labeled as follows: 01, conveying mechanism; 11, conveying table; 12, motorized roller; 02, empty sand box; 03, positioning mechanism; 31, mounting bracket; 32, top rod; 33, compression spring; 34, positioning claw; 35, proximity switch. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0014] Example 1 This utility model discloses a multi-specification sand box positioning device for an automatic casting molding line, comprising a conveying mechanism 01; it also includes an empty sand box 02 and a positioning mechanism 03. The empty sand box 02 is placed on the conveying mechanism 01 and conveyed forward, while the positioning mechanism 03 is installed on the conveying mechanism 01 to position the empty sand box 02. The conveying mechanism 01 includes a conveying table 11 and multiple sets of motorized rollers 12. The conveying table 11 is installed on a working surface and is equipped with a drive motor and a control cabinet. The multiple sets of motorized rollers 12 are rotatably mounted on the conveying table 11 and are connected by a synchronous transmission device. The drive motor drives the multiple sets of motorized rollers 12 to rotate synchronously. The positioning mechanism 03 includes a mounting bracket 31 and a push rod 32. Compression spring 33, positioning claw 34, and proximity switch 35 are mounted on conveyor table 11 via mounting bracket 31. Top rod 32 is mounted on mounting bracket 31. Compression spring 33 is fitted onto top rod 32. The bottom end of positioning claw 34 is connected to the top end of top rod 32. Proximity switch 35 is mounted on conveyor table 11. During operation, after empty sand box 02 moves to the designated position, it squeezes down positioning claw 34. Positioning claw 34 pushes top rod 32 down, and top rod 32 triggers proximity switch 35. Proximity switch 35 transmits an electrical signal to control cabinet. Control cabinet controls drive motor to stop running. Empty sand box 02 is stuck in positioning claw 34. Compression spring 33 pushes top rod 32 and positioning claw 34 to reset, ensuring positioning accuracy.

[0015] Example 2 like Figures 1 to 4 As shown, this utility model provides a multi-specification sand box positioning device for an automatic casting molding line. Based on embodiment 1, it further includes a positioning claw 34 with a sloping front side, a groove in the middle, and a straight rear side. During operation, an empty sand box 02 is conveyed onto multiple sets of motorized rollers 12. The multiple sets of motorized rollers 12 rotate synchronously, driving the empty sand box 02 forward. After the empty sand box 02 moves to the designated position, it presses down on the positioning claw 34. The sloping front side of the positioning claw 34 facilitates the empty sand box 02 pressing against the positioning claw 34. The positioning claw 34 pushes the top rod 32 down, triggering the proximity switch 35. The proximity switch 35 transmits an electrical signal to the control cabinet, which controls the drive motor to stop running. Under the action of inertial force, the empty sand box 02 continues to move forward, causing it to enter the groove. The compression spring 33 pushes the top rod 32 and the positioning claw 34 back to their original positions. The straight rear side of the positioning claw 34 prevents the empty sand box 02 from moving further forward, thus accurately positioning the empty sand box 02.

[0016] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-specification sand box positioning device for an automatic casting molding line, comprising a conveying mechanism (01); characterized in that, It also includes an empty sand box (02) and a positioning mechanism (03). The empty sand box (02) is placed on the conveying mechanism (01) and conveyed forward. The positioning mechanism (03) is installed on the conveying mechanism (01) to position the empty sand box (02).

2. The multi-specification sand box positioning device for an automatic casting molding line as described in claim 1, characterized in that, The conveying mechanism (01) includes a conveying table (11) and multiple sets of motorized rollers (12). The conveying table (11) is installed on the working surface. A drive motor and a control cabinet are provided on the conveying table (11). Multiple sets of motorized rollers (12) are rotatably installed on the conveying table (11). The multiple sets of motorized rollers (12) are connected by a synchronous transmission device. The drive motor drives the multiple sets of motorized rollers (12) to rotate synchronously.

3. The multi-specification sand box positioning device for an automatic casting molding line as described in claim 2, characterized in that, The positioning mechanism (03) includes a mounting bracket (31), a push rod (32), a compression spring (33), a positioning claw (34), and a proximity switch (35). The mounting bracket (31) is mounted on the conveyor table (11), the push rod (32) is mounted on the mounting bracket (31), the compression spring (33) is fitted on the push rod (32), the bottom end of the positioning claw (34) is connected to the top end of the push rod (32), and the proximity switch (35) is mounted on the conveyor table (11).

4. The multi-specification sand box positioning device for an automatic casting molding line as described in claim 3, characterized in that, It also includes a positioning claw (34) with a beveled front side, a groove in the middle, and a straight rear side.

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