Workpiece fixing device for shot blasting trolley and using method of workpiece fixing device

Abstract

A workpiece fixing device for a shot blasting trolley comprises a trolley base, and a supporting column containing groove is formed in the trolley base; the rotating shaft sliding groove is fixed to the end of the containing groove, and a coaxial clamping groove is formed in the bottom of the rotating shaft sliding groove. The supporting column is a long rod piece, and the bottom of the supporting column is fixedly connected with a rotating shaft. And the rotating shaft is in sliding fit with the rotating shaft sliding groove and is clamped into the coaxial clamping groove, so that the supporting column is rotationally connected with the trolley base. The supporting columns have a storage state and a working state. During storage, the supporting columns are horizontally arranged in the storage grooves, and the tops are not higher than the working face of the trolley. And during working, the workpiece is overturned upwards to a working position and is used for supporting the workpiece or forming a protective fence. According to the device, a sliding groove and clamping groove matched structure is adopted, rapid disassembly and assembly and state switching of the supporting columns are achieved, the original structure of the trolley does not need to be damaged, the double functions of workpiece supporting and safety protection are achieved, the problems that a traditional cushion block is poor in stability, tedious in operation and difficult to maintain are solved, and the efficiency and safety of shot blasting cleaning operation are improved.

Description

Technical Field

[0001] This invention relates to the field of casting process equipment technology, specifically to a workpiece fixing device for shot blasting trolleys and its usage method, which is particularly suitable for the support, positioning and protection of workpieces in mobile trolley-type shot blasting cleaning machines. Background Technology

[0002] During the trolley operation of a shot blasting machine for casting, the placement of workpieces directly affects the cleaning effect and production efficiency. In actual production, some workpieces exceed the conventional size range, requiring adjustments to their placement position and angle based on the characteristics of their cavities to ensure comprehensive and efficient shot blasting. Furthermore, during periods of high production volume, it is often necessary to increase the number of workpieces on the trolley to enhance the single-pass processing capacity.

[0003] Currently, the conventional practice is to use fragmented cast iron parts as supports. However, due to the nature of shot blasting operations, although the trolley is made of cast iron screen, after prolonged use, the surface of the screen becomes uneven due to the impact of shot blasting. Inevitably, some steel shot cannot be completely removed. Therefore, placing supports requires time-consuming and laborious cleaning, and the inability to guarantee cleaning effectiveness leads to poor stability after placement, posing a significant safety hazard. Furthermore, since the trolley's platform is made of cast iron screen, permanent supports cannot be welded on. Due to the operational characteristics of shot blasting equipment, exposed surfaces entering the chamber are subjected to high-intensity shot blasting impacts, making long-term use impossible, and disassembly after wear is extremely inconvenient.

[0004] To address the above issues, by modifying the trolley and calculating the strength of its structural support components, this new device can assist in adjusting the workpiece placement method and ensure increased stability and safety during workpiece placement. This solves the aforementioned pain points in production and operation, improves on-site safety, and enhances equipment efficiency. Furthermore, the movable slot design makes the installation and replacement of the support columns extremely convenient.

[0005] To address the aforementioned issues, there is an urgent need for a workpiece support and protection device that can flexibly adjust the workpiece placement method, improve placement stability and safety, and facilitate installation and replacement without affecting the original structure of the trolley. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a workpiece fixing device and its usage method for shot blasting trolleys. This device can easily and effectively support the placement and cleaning needs of workpieces at different angles, and meet the requirements for workpiece cleaning efficiency under different working conditions. Simultaneously, it effectively ensures workpiece stability and production process safety during the above-mentioned use.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A workpiece fixing device for a shot blasting trolley includes a trolley base, a support column storage groove, a shaft slide groove, a support column, and a shaft.

[0008] Specifically, the trolley base is the working platform of a mobile trolley-type shot blasting machine. The trolley base is provided with a support column storage slot, which is a long strip-shaped groove arranged along the length or width of the trolley base, used to accommodate the support columns when not in use.

[0009] The rotating shaft groove is fixedly mounted on the trolley base, located at one or both ends of the support column receiving slot. The rotating shaft groove is a vertical guide groove opened along a vertical direction, and a coaxial slot is provided at the bottom of the rotating shaft groove. Preferably, the rotating shaft groove is a pair of symmetrically arranged vertical guide grooves, and the coaxial slot is a semi-circular or arc-shaped groove provided at the bottom of the rotating shaft groove. The diameter of the coaxial slot matches the outer diameter of the rotating shaft, and the coaxial slot is coaxially arranged with the rotating shaft.

[0010] The support column is a long rod with a rotating shaft fixedly connected to its bottom. The rotating shaft and the support column can be an integral structure or a separate fixed connection structure. The two ends of the rotating shaft are respectively slidably fitted in the rotating shaft groove, the rotating shaft can move up and down along the rotating shaft groove, and the rotating shaft can be engaged in the coaxial slot to realize the rotational connection between the support column and the trolley base.

[0011] The support column has a retracted state and a working state: In the retracted state, the support column is placed horizontally in the support column storage slot, and the top of the support column is not higher than the working plane of the trolley base to ensure that it does not interfere with the placement of workpieces and shot blasting operations; in the working state, the support column rotates upward around the pivot axis to the working position to support the workpiece or form a protective railing. Furthermore, the support column can be rotated to a vertical state or a preset tilt angle in the working state to adapt to the support requirements of different workpieces.

[0012] As a preferred embodiment, the depth of the support column storage groove matches the cross-sectional dimensions of the support column, ensuring that the support column is fully embedded in the trolley base when stored.

[0013] As a preferred embodiment, the top of the support column is provided with an anti-slip structure or a buffer structure to enhance stability when in contact with the workpiece and reduce damage to the workpiece.

[0014] As a preferred option, the support column is integrally formed from high-strength wear-resistant steel to ensure its service life under shot blasting impact.

[0015] As a preferred embodiment, there are multiple support columns, which are arranged at intervals along the edge of the trolley base. When in operation, the multiple support columns form a fence-like protective structure to prevent the workpieces from slipping due to inertia or centrifugal force when the workpieces are stacked.

[0016] As a preferred option, the cross-sectional shape of the support column is circular, square, or irregular, which can be selected according to the actual stress requirements.

[0017] The present invention also provides a method of using a workpiece fixing device for a shot blasting trolley, comprising the following steps: Installation steps: Align the two ends of the rotating shaft at the bottom of the support column with the rotating shaft groove, and press down until the rotating shaft is engaged in the coaxial groove to complete the installation of the support column and the trolley base; Storage steps: When not in use, rotate the support column horizontally around the pivot so that the entire support column is placed in the support column storage slot, and the top of the support column is not higher than the working plane of the trolley base. Usage steps: When support or protection is needed, pull the support column upward from the support column storage slot, so that the rotating shaft slides upward along the rotating shaft groove and disengages from the coaxial slot. Then, rotate the support column upward around the rotating shaft to the working position, use the top of the support column to support the workpiece or use multiple support columns to form a fence-like protective structure. Replacement steps: After the support column is worn, pull the support column upward and flip it over to disengage the rotating shaft from the coaxial slot. Slide the rotating shaft upward along the rotating shaft groove to the top of the groove, remove the support column, replace it with a new support column, align the rotating shaft of the new support column with the rotating shaft groove, and press it down until it is engaged in the coaxial slot to complete the replacement.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) The fixing method adopts a combination of movable support column and sliding groove. The support column can be quickly installed and disassembled through the coaxial groove at the bottom of the sliding groove via the rotating shaft. No welding or additional fasteners are required, which is convenient for daily use and also facilitates quick replacement after wear. 2) The support column has two states: storage and working. When not in use, it can be completely stored in the storage slot without affecting the original function of the trolley. When in use, it can be positioned simply by pulling it up. The operation is simple and significantly improves work efficiency. 3) The support column can not only support the workpiece and adjust the angle of the workpiece to meet the cleaning needs of different cavities, but also serve as an edge guardrail when the workpiece is stacked to prevent the workpiece from slipping due to the inertia of the trolley or the centrifugal force of rotation. It has both support and protection functions. 4) The entire device relies on the original structure of the trolley, without the need for destructive modifications to the trolley, thus maintaining the structural strength and service life of the trolley itself. Attached Figure Description Figure 1 This is a layout diagram of the shot blasting machine system.

[0020] Figure 2 This is a schematic diagram of the workpiece fixing device for a shot blasting trolley according to the present invention, wherein (a) is a positional schematic diagram and (b) is a positional cross-sectional view.

[0021] Figure 3 This is an exploded view of the workpiece fixing device for a shot blasting trolley according to the present invention.

[0022] Figure 4 This invention relates to a diagram showing the usage state of a workpiece fixing device for a shot blasting trolley.

[0023] In the diagram, 01—Shot blasting machine support mechanism (trolley), 02—Support mechanism, 03—Support column, 04—Rotating shaft, 05—Rotating shaft slide groove, 06—Slide groove bottom slot, 07—Support column storage slot. Detailed Implementation The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the scope of protection of the present invention.

[0025] This embodiment provides a workpiece fixing device for a shot blasting trolley, which is mounted on the shot blasting machine trolley 01. The trolley 01 is the working platform of a mobile trolley-type shot blasting machine, and has a cast iron screen working surface and a reinforcing rib structure located below the working surface to support the load-bearing strength of the trolley.

[0026] like Figure 2 and Figure 3 As shown, in this embodiment, at least one set of support column storage slots 07 are provided on the working surface of the trolley 01. Each support column storage slot 07 is a long, narrow groove arranged along the length or width of the trolley, and its depth matches the cross-sectional height of the support column 03 described later. The storage slots 07 are used to accommodate the support column 03 when not in use, ensuring that the support column 03 is completely embedded below the working surface of the trolley, thus avoiding interference with workpiece placement or shot blasting operations.

[0027] A rotating shaft slide groove 05 is fixedly installed at one or both ends of the storage groove 07. In this embodiment, the rotating shaft slide groove 05 is a pair of symmetrically arranged vertical guide grooves, made of wear-resistant metal material, and fixed to the reinforcing rib or side wall of the trolley 01 by welding or bolt connection. A guide channel is opened vertically inside the rotating shaft slide groove 05, and a slide groove bottom slot 06 is provided at the bottom of the guide channel. The slot 06 is a semi-circular or arc-shaped groove, the diameter of which matches the outer diameter of the rotating shaft 04, and is used to coaxially cooperate with the rotating shaft 04 to realize the positioning and fixing of the support column 03.

[0028] The support column 03 is a long rod, integrally machined from high-strength wear-resistant steel to ensure its service life under shot blasting impact. A rotating shaft 04 is fixedly installed at the bottom of the support column 03. This rotating shaft 04 can be a separate connection from the support column 03 or an integrally machined structure. Both ends of the rotating shaft 04 are slidably fitted into rotating shaft grooves 05 on both sides, and can move up and down along the grooves 05. When the rotating shaft 04 slides to the bottom of the groove 05, it precisely engages in the bottom slot 06 of the groove, realizing the rotational connection between the support column 03 and the trolley 01. At this time, the rotating shaft 04 serves as the fulcrum of the support column 03, allowing the support column 03 to swing up and down in the vertical plane around the rotating shaft 04, possessing the freedom of rotation around the shaft.

[0029] Specifically, in the normal non-use state, the support column 03 is placed horizontally in the storage slot 07, and its top is not higher than the working surface of the trolley 01, ensuring that the trolley surface is flat and does not affect the placement of regular workpieces and shot blasting operations.

[0030] Please see Figure 4 When support or protection of the workpiece is required, the operator only needs to manually pull the support column 03 upward from the receiving groove 07. During the pulling process, the rotating shaft 04 slides upward along the rotating shaft groove 05. After the rotating shaft 04 disengages from the bottom slot 06 of the groove, the support column 03 continues to rotate upward around the rotating shaft 04 until the support column 03 reaches the required working position. In this embodiment, the support column 03 can be rotated to a vertical state, or it can be rotated to a specific tilt angle according to the requirements of the workpiece cavity. When the support column 03 is in the working position, the rotating shaft 04 is stably engaged in the bottom slot 06 of the groove under the weight of the support column 03 and the force of the workpiece, forming a reliable force support point.

[0031] In operation, the support column 03 serves two main functions: First, as a workpiece support. When the workpiece size exceeds the standard range or the cleaning angle needs adjustment, the support column 03 can be pulled up to a suitable height, allowing the workpiece to lean against or be placed on top of the support column 03, thereby changing the workpiece's placement posture on the trolley and meeting the shot blasting cleaning needs of irregularly shaped parts or special cavities. Second, as a safety guardrail. When production is fast-paced and the number of workpieces needs to be increased, multiple support columns 03 can be pulled up along the edge of the trolley to form a fence structure, effectively preventing workpieces from slipping due to inertia during trolley operation or centrifugal force during rotation, thus avoiding workpiece damage or impact on the shot blasting chamber.

[0032] To further improve the performance, an anti-slip pad or buffer sleeve can be added to the top of the support column 03 in this embodiment to increase the friction when in contact with the workpiece and reduce scratches on the workpiece surface. In addition, the cross-sectional shape of the support column 03 can be designed as circular, square, or irregular according to the actual stress requirements to ensure sufficient bending strength.

[0033] The installation and maintenance of this device are also very convenient. For initial installation, simply align the two ends of the rotating shaft 04 at the bottom of the support column 03 with the guide channel of the rotating shaft slide groove 05, and press down until the rotating shaft 04 is engaged in the bottom slot 06 of the slide groove. When the support column 03 wears out after long-term use, the operator only needs to pull the support column 03 upwards and rotate it to a suitable angle, allowing the rotating shaft 04 to disengage from the bottom slot 06 of the slide groove. Slide it upwards along the guide channel to the top of the slide groove, and the support column 03 can be removed entirely for replacement. This eliminates the need to disassemble the trolley or other structures, greatly reducing maintenance difficulty and downtime.

[0034] In summary, the workpiece fixing device for shot blasting trolley described in this specific embodiment, through the structural design of sliding groove and slot cooperation, realizes the quick installation, convenient use and flexible replacement of support columns, and has the dual functions of workpiece support and safety protection. It effectively solves the problems of poor stability of pad blocks, cumbersome operation and difficult maintenance in the prior art, and significantly improves the efficiency and safety of shot blasting cleaning operations.

[0035] The above description is only a preferred embodiment of the present invention. 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 invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A workpiece fixing device for a shot blasting trolley, characterized in that, include: The trolley base is provided with a support column storage groove, which is a long strip-shaped groove arranged along the length or width of the trolley base. A rotating shaft slide is fixedly installed on the trolley base and located at one or both ends of the support column storage slot. The rotating shaft slide is a vertical guide groove opened in the vertical direction, and a coaxial slot is provided at the bottom of the rotating shaft slide. A support column, which is a long rod with a rotating shaft fixedly connected to its bottom; Both ends of the rotating shaft are slidably fitted into the rotating shaft groove, the rotating shaft can move up and down along the rotating shaft groove, and the rotating shaft can be inserted into the coaxial slot to realize the rotational connection between the support column and the trolley base; The support column has a storage state and a working state: in the storage state, the support column is placed horizontally in the support column storage slot, and the top of the support column is not higher than the working plane of the trolley base; in the working state, the support column rotates upward around the pivot axis to the working position to support the workpiece or form a protective railing.

2. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The rotating shaft groove is a pair of symmetrically arranged vertical guide grooves, and the coaxial slot is a semi-circular or arc-shaped groove provided at the bottom of the rotating shaft groove. The diameter of the coaxial slot matches the outer diameter of the rotating shaft, and the coaxial slot is coaxially arranged with the rotating shaft.

3. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The top of the support column is provided with an anti-slip structure or a buffer structure.

4. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The depth of the support column storage groove is matched with the cross-sectional dimensions of the support column.

5. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The support column is made of high-strength wear-resistant steel and is integrally machined.

6. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The rotating shaft and the support column are either an integral structure or a separate fixed connection structure.

7. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The support column can be flipped to a vertical position or a preset tilt angle when in operation.

8. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, There are multiple support columns, which are arranged at intervals along the edge of the trolley base, and the multiple support columns form a fence-like protective structure when in operation.

9. The workpiece fixing device for a shot blasting trolley according to claim 1, characterized in that, The cross-sectional shape of the support column is circular, square, or irregular.

10. A method of using a workpiece fixing device for a shot blasting trolley, comprising the workpiece fixing device for a shot blasting trolley as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Installation steps: Align the two ends of the rotating shaft at the bottom of the support column with the rotating shaft groove, and press down until the rotating shaft is engaged in the coaxial groove to complete the installation of the support column and the trolley base; Storage steps: When not in use, rotate the support column horizontally around the pivot so that the entire support column is placed in the support column storage slot, and the top of the support column is not higher than the working plane of the trolley base. Usage steps: When support or protection is needed, pull the support column upward from the support column storage slot, so that the rotating shaft slides upward along the rotating shaft groove and disengages from the coaxial slot. Then, rotate the support column upward around the rotating shaft to the working position, use the top of the support column to support the workpiece or use multiple support columns to form a fence-like protective structure. Replacement steps: After the support column is worn, pull the support column upward and flip it over to disengage the rotating shaft from the coaxial slot. Slide the rotating shaft upward along the rotating shaft groove to the top of the groove, remove the support column, replace it with a new support column, align the rotating shaft of the new support column with the rotating shaft groove, and press it down until it is engaged in the coaxial slot to complete the replacement.

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