Sandblasting machine self-centering fixture

Abstract

The present invention relates to the technical field of auxiliary equipment for mechanical processing production lines, and specifically to a self-centering fixing fixture for a sandblasting machine. The bottom positioning plate is rotatably connected to the sandblasting machine so as to rotate relative to the sandblasting machine; the linear guide rail is radially fixed to the bottom positioning plate, and there are multiple linear guide rails, which are distributed in a scattered manner; the slider is slidably connected to the linear guide rail, and there are multiple sliders, which correspond one to one with the linear guide rails; the positioning column is fixed to the slider; the polygonal guide plate is provided with multiple guide arc grooves, and the guide arc grooves are provided with positioning columns, so that the guide arc grooves limit the positioning columns and provide a moving channel for the positioning columns; the locking mechanism is used to lock the relative position of the bottom positioning plate and the polygonal guide plate. The present invention not only reduces the labor intensity of the operator and extends the service life of the equipment, but also improves work efficiency and reduces the scrap rate of sandblasting.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary equipment for mechanical processing production lines, in particular to a self-centering fixing fixture for a sandblasting machine. Background Art

[0002] The original sandblasting machine's base was a universal disc. During operation, the workpiece was placed on the disc and separated by positioning columns to prevent relative movement. Because the original sandblasting machine's base had a fixed diameter and the center of the base circle did not coincide with the center of the sandblasting machine door, the base disc's diameter was limited, making it impossible to process large, annular workpieces.

[0003] Furthermore, traditional machining methods use fixed-size locating posts to separate workpieces, which cannot be precisely fixed to varying workpiece sizes. This makes it very easy for workpieces to shift during the sandblasting process, especially when the workpieces are large in diameter. This can cause workpieces to deflect during rotation, potentially damaging the workpiece and leading to a high scrap rate. The operator needs to manually adjust the locating posts to secure the workpiece, which is complex, inefficient, and limited in scope. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a self-centering fixture for sandblasting machines. This fixture ensures that the workpiece and the positioning plate are concentric and prevent movement during the sandblasting process. Furthermore, this fixture not only reduces operator labor intensity and extends the service life of the equipment, but also improves work efficiency and reduces the scrap rate of sandblasting.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is a self-centering fixing fixture for a sandblasting machine, which includes a bottom positioning disk, a linear guide rail, a slider, a positioning column, a polygonal guide disk and a locking mechanism. The bottom positioning disk is connected to the sandblasting machine; the linear guide rail is fixed to the bottom positioning disk along the radial direction of the bottom positioning disk, and the linear guide rail is provided in multiple and scattered distribution; the slider is slidably connected to the linear guide rail, and the slider is provided in multiple and one-to-one correspondence with the linear guide rail; the positioning column is fixed to the slider to move synchronously with the slider; the polygonal guide disk is provided with multiple guide arc grooves, and the guide arc grooves are provided with the positioning column, so that the guide arc grooves limit the positioning column and provide a moving channel for the positioning column; the locking mechanism is used to lock the relative position of the bottom positioning disk and the polygonal guide disk.

[0006] Furthermore, the locking mechanism includes a locking handle and a conical locking pad. The bottom of the locking handle is threadedly connected to the center of the bottom positioning plate. The conical locking pad is fixed to the locking handle. When the locking handle is rotated, the conical locking pad moves downward with the locking handle and presses against the polygonal guide plate.

[0007] Furthermore, the sandblasting machine includes a sandblasting machine door, and an elastic buffer guide is fixed on both sides of the sandblasting machine door. The elastic buffer guide includes a V-shaped elastic sheet installed on the edge of the sandblasting machine door, and the V-shaped elastic sheet is used to guide the polygonal guide plate passing through the sandblasting machine door.

[0008] Furthermore, the surface of the positioning column is covered with a polyurethane sleeve.

[0009] Furthermore, a conical groove is provided at a center position of a surface of the polygonal guide plate away from the bottom positioning plate, and the conical groove is adapted to the conical locking washer.

[0010] Furthermore, the linear guide rail is fixed to the bottom positioning plate by screws.

[0011] Furthermore, the linear guide rails are evenly distributed on the bottom positioning plate; and the guide arc grooves are evenly distributed on the polygonal guide plate.

[0012] Furthermore, the linear guide rails, sliders, positioning columns and guide arc grooves are consistent in number and correspond one to one.

[0013] Furthermore, there are five of each of the linear guide rail, the slider, the positioning column and the guide arc groove.

[0014] Furthermore, the polygonal guide disc is configured as a pentagonal guide disc.

[0015] The present invention has the beneficial effect of reducing operator labor and improving workpiece positioning by rotating the polygonal guide disc to adjust the relative positions of the bottom and polygonal guide discs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a self-centering fixing fixture for a sandblasting machine according to one embodiment of the present invention;

[0017] Figure 2 A cross-sectional view of a self-centering fixture for a sandblasting machine according to an embodiment of the present invention;

[0018] Figure 3 A schematic structural diagram of an elastic buffer guide member in one embodiment of the present invention;

[0019] In the picture: 10. Self-centering fixture of sandblasting machine,

[0020] 100. Bottom positioning plate,

[0021] 200, linear guide,

[0022] 300, Slider,

[0023] 400, positioning column,

[0024] 500, polygonal guide plate, 510, guide arc groove, 520, conical groove,

[0025] 600, locking mechanism, 610, locking handle, 620, tapered locking pad,

[0026] 700, elastic buffer guide, 710, V-shaped elastic sheet,

[0027] 20. Sandblasting machine, 21. Sandblasting machine door. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] The sandblasting machine uses compressed air to transport powdered granular materials with a diameter of 1mm-4mm from one place to another in a pipeline. In the process of converting kinetic energy into potential energy, the high-speed moving sand particles scour the surface of the workpiece, thereby improving the surface quality of the workpiece.

[0030] See also Figure 1 and Figure 2 One embodiment of the present invention provides a self-centering fixing fixture 10 for a sandblasting machine, which is used for sandblasting processing of a workpiece. During operation, the self-centering fixing fixture 10 for a sandblasting machine is used to fix the workpiece. The self-centering fixing fixture 10 for a sandblasting machine includes a bottom positioning plate 100, a linear guide rail 200, a slider 300, a positioning column 400, a polygonal guide plate 500 and a locking mechanism 600. The bottom positioning plate 100 is connected to the sandblasting machine 20. Preferably, the bottom positioning plate 100 is rotatably connected to the sandblasting machine 20 so as to rotate relative to the sandblasting machine 20. While the bottom positioning plate 100 rotates, multiple bottom positioning plates 100 make circular motions, and their trajectories pass through the sandblasting machine door 30. In this way, during the sandblasting operation, the workpiece can rotate with the bottom positioning plate 100 to improve the sandblasting efficiency of the sandblasting machine 20.

[0031] like Figure 1 and Figure 3As shown, the linear guide 200 is fixed to the bottom positioning plate 100 along the radial direction of the bottom positioning plate 100. As an example, the linear guide 200 is fixed to the bottom positioning plate 100 by screws. It should be noted that there is no limitation on the method of fixing the linear guide 200 on the bottom positioning plate 100. In addition to using locking parts such as screws, the linear guide 200 can also be directly welded to the bottom positioning plate 100. There are multiple linear guides 200, and they are distributed in a scattered manner. The linear guides 200 are evenly distributed on the bottom positioning plate 100. The slider 300 is slidably connected to the linear guide. There are multiple sliders 300, and they correspond one to one to the linear guides 200. The positioning column 400 is fixed to the slider 300 to move synchronously with the slider 300.

[0032] See also Figure 1 The polygonal guide plate 500 is formed with a plurality of guide arc grooves 510 extending therethrough. Positioning posts 400 are inserted through these guide arc grooves 510, thereby limiting the positioning posts 400 and providing a path for their movement. This path is the circular path shown in the figure. Similar to the uniform distribution of the linear guide rails 200 on the bottom positioning plate 100, in this embodiment, the guide arc grooves 510 are evenly distributed throughout the polygonal guide plate 500.

[0033] The aforementioned self-centering fixture 10 for the sandblasting machine is limited in diameter because the center of the bottom positioning disc 100 does not coincide with the center of the sandblasting machine door 21. Therefore, a guide disc is provided above the bottom positioning disc 100, and the guide disc is configured in a polygonal shape. This increases the effective area for supporting the workpiece, thereby expanding the workpiece processing range while ensuring that the maximum chord length of the bottom positioning disc 100 can pass smoothly through the sandblasting machine door 21. Furthermore, by cooperating with the upper polygonal guide disc 500, the polygonal guide disc 500 is rotated to adjust the relative position of the bottom positioning disc 100 and the polygonal guide disc 500, causing multiple positioning posts 400 to move radially simultaneously, thereby facilitating workpiece positioning. This reduces the operator's labor intensity and improves work efficiency.

[0034] See also Figure 1 and Figure 2 The locking mechanism 600 is used to lock the relative position of the bottom positioning plate 100 and the polygonal guide plate 500. In one embodiment, the locking mechanism 600 includes a locking handle 610 and a tapered locking block 620. The bottom of the locking handle 610 is threadedly connected to the center of the bottom positioning plate 100, and the tapered locking block 620 is fixed to the locking handle. When the locking handle 610 is rotated, the tapered locking block 620 moves downward with the locking handle 610 and presses against the polygonal guide plate 500.

[0035] In addition to the method shown in the figure, the locking mechanism 600 can also be set in other detachable locking methods. For example, locking claws are set on the sides of the bottom positioning plate 100 and the polygonal guide plate 500. After adjusting the positioning column 400 to the appropriate position, the locking claws are clamped on the edges of the bottom positioning plate 100 and the polygonal guide plate 500 to prevent the two from rotating relative to each other, that is, fixing the relative position of the bottom positioning plate 100 and the polygonal guide plate 500.

[0036] In conjunction with this, see Figure 2 In one embodiment, a conical groove 520 is provided at the center of the surface of the polygonal guide plate 500 away from the bottom positioning plate 100 , and the conical groove 520 is adapted to the conical locking pad 620 .

[0037] The linear guide rail 200 of the sandblasting machine self-centering fixture 10 is screwed to the bottom positioning plate 100. The bottom positioning plate 100 is fixed to the slider 300 and passes through the guide arc groove 510 on the polygonal guide plate 500. The radial position of the multiple positioning posts 400 is determined by manually rotating the angle between the polygonal guide plate 500 and the bottom positioning plate 100 according to the diameter of the workpiece. The polygonal guide plate 500 is then threaded onto the bottom positioning plate 100 by passing the locking handle 610 through the tapered locking block 620.

[0038] In order to reduce the possibility of the positioning column 400 being worn and thereby extend the service life of the self-centering fixture 10 of the sandblasting machine, in one embodiment, the surface of the positioning column 400 is covered with a polyurethane sleeve.

[0039] Further, see Figure 3 , showing a schematic structural diagram of an elastic buffer guide member in an embodiment of the present invention; in one embodiment, a sandblasting machine 20 includes a sandblasting machine door 21, and an elastic buffer guide member 700 is fixed on both sides of the sandblasting machine door 21, and the elastic buffer guide member 700 includes a V-shaped elastic sheet 710 installed on the edge of the sandblasting machine door, and the V-shaped elastic sheet 710 is used to adjust the polygonal guide plate 500 passing through the sandblasting machine door 21.

[0040] Preferably, in some embodiments, the number of linear guide rails 200, sliders 300, positioning posts 400 and guide arc grooves 510 is consistent and corresponds to each other. Figure 1 and Figure 3 As shown, in one embodiment, there are five linear guide rails 200, five sliders 300, five positioning posts 400, and five guide arc grooves 510. In coordination therewith, the polygonal guide disc 500 is configured as a pentagonal guide disc.

[0041] After the sandblasting is completed, when the pentagonal guide plate 500 passes through the sandblasting machine door 21, the circumscribed circle diameter of the pentagonal guide plate 500 is greater than the width of the sandblasting machine door 21. In order to prevent the pentagonal guide plate 500 from interfering with or colliding with the sandblasting machine door 21, an elastic buffer guide member 700 is added at the exit of the sandblasting machine door 21 so that the pentagonal guide plate 500 can pass through the exit of the sandblasting machine door 21 smoothly.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

Claims

1. Self-centering fixture for sandblasting machine, characterized by: include Bottom positioning plate, connected to the sandblasting machine; A linear guide rail is fixed to the bottom positioning plate along the radial direction of the bottom positioning plate, and a plurality of linear guide rails are provided and distributed in a scattered manner; A slider slidably connected to the linear guide rail, wherein a plurality of sliders are provided and correspond one to one with the linear guide rails; a positioning post, fixed to the slider to move synchronously with the slider; A polygonal guide plate is provided with a plurality of guide arc grooves, wherein the positioning posts are inserted through the guide arc grooves, so that the guide arc grooves limit the positioning posts and provide movement channels for the positioning posts; A locking mechanism for locking the relative positions of the bottom positioning plate and the polygonal guide plate; The locking mechanism includes a locking handle and a conical locking pad. The bottom of the locking handle is threadedly connected to the center of the bottom positioning plate. The conical locking pad is fixed to the locking handle. When the locking handle is rotated, the conical locking pad moves downward with the locking handle and presses against the polygonal guide plate. The sandblasting machine includes a sandblasting machine door, and an elastic buffer guide is fixed on both sides of the sandblasting machine door. The elastic buffer guide includes a V-shaped elastic sheet installed on the edge of the sandblasting machine door, and the V-shaped elastic sheet is used to guide the polygonal guide plate passing through the sandblasting machine door; The polygonal guide disc is configured as a pentagonal guide disc.

2. The self-centering fixture for sandblasting machine according to claim 1, characterized in that: The surface of the positioning column is covered with a polyurethane sleeve.

3. The self-centering fixing fixture for a sandblasting machine according to claim 1, characterized in that: A conical groove is provided at the center of the surface of the polygonal guide plate away from the bottom positioning plate, and the conical groove is adapted to the conical locking pad.

4. The self-centering fixture for sandblasting machine according to claim 1, characterized in that: The linear guide rail is fixed to the bottom positioning plate by screws.

5. The self-centering fixing fixture for a sandblasting machine according to claim 1, characterized in that: The linear guide rails are evenly distributed on the bottom positioning plate; and the guide arc grooves are evenly distributed on the polygonal guide plate.

6. The self-centering fixture for sandblasting machine according to claim 1, characterized in that: The linear guide rails, sliders, positioning columns and guide arc grooves are consistent in number and correspond one to one.

7. The self-centering fixture for sandblasting machine according to claim 6, characterized in that: There are five linear guide rails, five sliding blocks, five positioning columns and five guide arc grooves.

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