A hanger for improving shot blasting efficiency

Abstract

The utility model discloses a kind of hangers for improving shot efficiency, belong to the auxiliary production technical field of casting, the hanger includes main rod, main rod upper end portion has suspension hook, main rod periphery is connected with multiple skeletons, skeleton is annular piece, multiple skeletons are spaced apart along the axial direction of main rod, skeleton is equipped with outside suspension rod, skeleton is fixedly connected with side rod on the inboard of main rod, side rod is distributed in radial with main rod as center, side rod connects skeleton and main rod, side rod is equipped with inboard suspension rod, the side rod of any skeleton inboard has at least five, the extension line of adjacent side rod can intersect and form acute angle. The utility model can batch hang, and space utilization is high, greatly improves shot efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary production technology in casting, specifically relating to a fixture for improving shot blasting efficiency. Background Technology

[0002] Aluminum castings exhibit good mechanical properties at room temperature. However, their tensile strength decreases significantly at high temperatures and their impact resistance decreases significantly at low temperatures. During the cooling process, uneven wall thickness and inconsistent cooling rates lead to stress concentration on the surface. Shot blasting can improve the surface microstructure, eliminate surface stress (tensile stress) concentration, increase fatigue strength, and slightly improve surface hardness. Furthermore, due to the limited space in the shot blasting machine housing, optimizing the shot blasting fixture is necessary to maximize space utilization and increase production efficiency.

[0003] Shot blasting is a surface treatment process for castings, a cold treatment process mainly divided into shot blasting cleaning and shot blasting strengthening. Shot blasting cleaning is used to remove surface oxide scale and other impurities to improve the appearance quality, giving the workpiece a certain surface roughness, and also improving the adhesion of the paint film after subsequent painting. Chinese utility model patent CN219152580U discloses a multi-purpose detachable polishing rack. This multi-purpose detachable polishing rack includes a support frame, a support pole mechanism, and a suspension plate frame. The support frame has support hooks at its ends, and multiple support pole mechanisms are evenly distributed around the support frame. Multiple lifting lugs are provided on the support pole mechanisms, and a suspension plate frame is arranged in the middle of each support pole mechanism. Multiple support columns are arranged around the suspension plate frame, and the support columns are inserted into the lifting lugs on the corresponding support pole mechanisms. Multiple support rods are provided on the suspension plate frame, and multiple hanging rods are provided on the support rods. Multiple limiting protrusions are evenly distributed on the hanging rods. Its advantages are: simple structure, easy to use, easy to install, and the spacing and number of the hanging plate can be adjusted according to the usage requirements, making it suitable for hanging different workpieces and bringing convenience to the shot blasting process of workpieces.

[0004] Currently available hangers are designed only to hold the product in place. However, in the actual shot blasting process, the steel shot is ejected in a fluid state, and the product is irregular in shape. Therefore, the steel shot is wasted in areas not covered by the product. Utility Model Content

[0005] The purpose of this utility model is to provide a hanger that improves shot blasting efficiency by maximizing space utilization, increasing shot blasting efficiency, and reducing processing costs.

[0006] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a hanger for improving shot blasting efficiency, comprising: a main rod, with a suspension hook at the upper end of the main rod, and multiple frames connected to the periphery of the main rod. The frames are annular, and the multiple frames are spaced apart along the axial direction of the main rod, with outer suspension rods arranged on the frames. The suspension hook is used to suspend the main rod in the shot blasting equipment. During the shot blasting process, the workpiece is suspended on each of the outer suspension rods, forming a surrounding and shielding effect on the outer periphery of the main rod. This helps to reduce the probability of the shot ejected by the shot blasting equipment contacting the main rod, thereby reducing the impact interference of shot blasting on the main rod, thus reducing wear on the main rod, increasing the service life of the main rod, and reducing the cost of replacing the hanger.

[0007] Preferably, the skeleton has side rods fixedly connected to its inner side near the main rod. These side rods are radially distributed around the main rod, connecting the skeleton to the main rod, and are equipped with inner suspension rods. The side rods connect and support the skeleton to the main rod, enhancing the stability of the skeleton's connection to the main rod. Workpieces can be suspended on the side rods via the inner suspension rods, increasing the number of suspended workpieces, improving the number of products per shot blasting cycle, and increasing production efficiency. Because the side rods are radially connected to the inner side of the skeleton, the workpieces connected via the inner suspension rods form a near-outer periphery of the main rod, creating multiple layers of shielding on the outer side of the main rod during shot blasting. This multi-layered suspension increases the probability of shot contact with the workpiece, improving shot blasting efficiency and workpiece quality. Furthermore, the inner and outer layers of workpieces reduce the number of shot pieces directly contacting the main rod, thus reducing contact wear and further extending the lifespan of the main rod components.

[0008] Preferably, there are at least five side bars on the inner side of any frame, and the extension lines of adjacent side bars can intersect and form an acute angle.

[0009] Preferably, the frame includes at least five straight rods, each longer than the side rods. These straight rods are connected end-to-end, with adjacent rods forming an obtuse angle at the connection point closer to the main rod. The frame, formed by connecting the straight rods end-to-end, creates a regular polygonal ring. Compared to a circular ring, this reduces the overall circumference of the frame, lowering manufacturing costs and making it easier to manufacture, thus reducing the difficulty of manufacturing the hanger. Furthermore, because the frame is formed by connecting straight rods, the horizontal distance between the frame and the shot blasting machine's ejection point is shortened compared to a circular ring. This reduces the impact force of the ejected shot on the frame, thereby stabilizing the frame's material strength and extending its service life.

[0010] Preferably, the side rods are fixed at the connection points of adjacent straight rods, and two adjacent side rods and the straight rod between them form a triangular frame. The two adjacent side rods can form a triangular frame with the straight rod between them; that is, the frame and its inner side rods form multiple triangular frames. These triangular frames reduce the possibility of the ejected shot causing bending or breakage at the frame and side rod connections, thereby ensuring the stability of the suspended workpiece, reducing the possibility of the workpiece falling and damaging the shot blasting machine, and also reducing the possibility of workpiece displacement obstructing the workpiece below, leading to poor shot blasting quality and improving the product qualification rate.

[0011] Preferably, there are at least ten outer suspension rods, which are evenly distributed on the outer side of the frame away from the main rod. An outer suspension rod is provided in the middle of the straight rod, and an outer suspension rod is also provided at the connection of adjacent straight rods.

[0012] Preferably, each side bar has an inner suspension bar on both sides. Two adjacent side bars each have an inner suspension bar located inside the triangular frame, meaning there are two inner suspension bars inside the triangular frame. Workpieces suspended on these two inner suspension bars shield the outside of the main bar. Furthermore, since there are multiple triangular frames surrounding the main bar, the workpieces suspended by the inner suspension bars shield the outside of the main bar, reducing wear on the main bar caused by the projectile.

[0013] Preferably, the outer suspension rod extends away from the main rod and tilts upward. The upward tilt of the outer suspension rod prevents the workpiece from slipping off the hanger during shot blasting. Preferably, the inner suspension rod extends away from the side rod and tilts upward. During the shot blasting process, the shot blasting machine uses a drive device at its top to rotate the main rod under the suspension hook, thus uniformly blasting each workpiece suspended on the hanger with the projectiles. At a certain angle, the shot blasting contacts the workpiece from the direction it is suspended. The upward tilt of the inner suspension rod reduces the possibility of workpiece slippage. This prevents wear caused by workpiece slippage relative to the suspension rod and reduces the possibility of workpieces falling and injuring lower workpieces due to the impact of the projectiles, thereby reducing the likelihood of workpiece damage and improving product qualification rate.

[0014] Preferably, the frame has at least five parts. The five side bars on the inner side of the frame each have two inner suspension bars, which, together with the ten outer suspension bars arranged on the outer side of the frame, enable the same frame to hang at least twenty workpieces. The frame has at least five layers, so that the hanger can hang and shot blast at least one hundred workpieces at a time, increasing the number of workpieces shot blasted in a single operation and improving production efficiency.

[0015] Compared with the prior art, this utility model has the following advantages: the workpieces on the inner and outer suspension rods form multiple layers of shielding outside the main rod, reducing wear on the main rod; the multi-layer suspension increases the probability of the shot contacting the workpiece, improving shot blasting efficiency and workpiece quality; the skeleton is composed of straight rods, reducing manufacturing costs and making it easier to manufacture; the straight rods shorten the horizontal distance between the skeleton and the shot ejection position, reducing the impact force of the shot on the skeleton and extending the service life of the skeleton; the upward-sloping inner suspension rod reduces the possibility of workpiece slippage; the multi-layer skeleton, combined with the inner and outer suspension rods, allows the hanger to hang up to twenty workpieces at a time, improving shot blasting efficiency and increasing space utilization. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the present utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the locking component structure according to Embodiment 2 of this utility model; Figure 4 for Figure 3 Enlarged view of region A in the middle; Figure 5 This is a schematic diagram of the sliding sleeve in Embodiment 3 of this utility model.

[0017] Reference numerals: Main rod 1; Suspension hook 10; Frame 2; Outer suspension rod 20; Side rod 3; Inner suspension rod 30; Connecting ring 4; Locking element 5; Slider 50; Protrusion 51; Base 52; Spring 53; Sliding sleeve 6. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to specific embodiments and accompanying drawings: Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1: See appendix Figure 1 -Appendix Figure 2A shot blasting efficiency improvement fixture includes: a main rod 1, with a suspension hook 10 at the upper end of the main rod 1, and multiple frames 2 connected to the periphery of the main rod 1. The frames 2 are annular and spaced apart along the axial direction of the main rod 1, with outer suspension rods 20 arranged on the frames 2. The suspension hook 10 is used to suspend the main rod 1 in the shot blasting equipment. During the shot blasting process, the workpiece is suspended on each of the outer suspension rods 20, forming a surrounding and shielding effect on the outer periphery of the main rod 1. This helps to reduce the probability of the shot ejected by the shot blasting equipment contacting the main rod 1, thereby reducing the impact interference of the shot blasting on the main rod 1, thus reducing wear on the main rod 1, increasing the service life of the main rod 1, and reducing the cost of replacing the fixture.

[0020] The frame 2 is fixedly connected to the side rod 3 on the inner side near the main rod 1. The side rod 3 is distributed radially with the main rod 1 as the center. The side rod 3 connects the frame 2 and the main rod 1. The side rod 3 is provided with the inner suspension rod 30. Side rod 3 connects and supports the frame 2 and the main rod 1, enhancing the connection stability of the frame 2 around the main rod 1. Workpieces can be suspended on side rod 3 via inner suspension rod 30, increasing the number of suspended workpieces, improving the number of products per shot blasting, and increasing workpiece production efficiency. Since side rod 3 is radially connected to the inner side of the frame 2, the workpieces connected via inner suspension rod 30 can form a near-outer periphery of the main rod 1 for protection. Together with the workpieces suspended on the frame 2, this forms multiple layers of protection on the outer side of the main rod 1 during shot blasting. On the one hand, the multi-layered suspension increases the probability of shot contact with the workpiece, improving shot blasting efficiency and workpiece quality. On the other hand, the inner and outer layers of surrounding workpieces reduce the number of shot pieces directly contacting the main rod 1, thus reducing contact wear between the shot and the main rod 1 during shot blasting and further improving the lifespan of the main rod 1.

[0021] There are at least five side rods 3 inside any frame 2, and the extension lines of adjacent side rods 3 can intersect and form an acute angle.

[0022] The frame 2 includes at least five straight rods, each longer than the side rods 3. These rods are connected end-to-end, with adjacent rods forming an obtuse angle at the connection point closer to the main rod 1. The frame 2, composed of at least five straight rods connected end-to-end, forms a regular polygonal ring. Compared to a circular ring, this reduces the overall circumference of the frame 2, lowering manufacturing costs and making it easier to manufacture, thus reducing the difficulty of manufacturing the hanger. Because the frame 2 is formed by connecting straight rods, the horizontal distance between the frame 2 and the shot blasting machine's ejection point is shortened compared to a circular ring. This reduces the impact force of the ejected shot on the frame 2, thereby stabilizing the material strength of the frame 2 and extending its service life.

[0023] Side rods 3 are fixed at the connection points of adjacent straight rods, and two adjacent side rods 3 and the straight rod between them form a triangular frame. Two adjacent side rods 3 can form a triangular frame with the straight rod between them; that is, the frame 2 and its inner side rods 3 form multiple triangular frames. These triangular frames reduce the possibility of the ejected shot causing bending or breakage at the connection points of the frame 2 and side rods 3, thus ensuring the stability of the suspended workpiece, reducing the possibility of the workpiece falling and damaging the shot blasting machine, and also reducing the possibility of workpiece displacement obstructing the workpiece below, leading to poor shot blasting quality and improving the product qualification rate.

[0024] There are at least ten outer suspension rods 20. The outer suspension rods 20 are evenly distributed on the outer side of the frame 2 away from the main rod 1. The middle of the straight rod is provided with an outer suspension rod 20, and adjacent straight rods are also provided with an outer suspension rod 20 at the connection.

[0025] Each side rod 3 has an inner suspension rod 30 on each side. Two adjacent side rods 3 each have an inner suspension rod 30 located inside the triangular frame, that is, there are two inner suspension rods 30 inside the triangular frame. The workpieces suspended on the two inner suspension rods 30 form a shield on the outside of the main rod 1. Since there are multiple triangular frames surrounding the main rod 1, the workpieces suspended by the inner suspension rods 30 form a shield on the outside of the main rod 1, reducing the wear of the projectile on the main rod 1.

[0026] The outer suspension rod 20 extends away from the main rod 1 and tilts upward. The upward tilt of the outer suspension rod 20 prevents the workpiece from slipping off the hanger during shot blasting.

[0027] The inner suspension rod 30 extends away from the side rod 3 and tilts upward. During the shot blasting process, the shot blasting machine rotates the main rod 1 under the suspension hook 10 via a drive device at its top, so as to throw shot to uniformly blast each workpiece suspended on the hanger. When a certain angle is reached, the shot will contact the workpiece from the direction of the workpiece suspension. The upward tilting inner suspension rod 30 reduces the possibility of workpiece slippage. On the one hand, it avoids the workpiece slipping relative to the suspension rod and causing wear. On the other hand, it reduces the possibility of the workpiece falling and injuring the workpiece below due to the impact of the shot, thus reducing the possibility of workpiece damage and improving the product qualification rate.

[0028] The frame 2 has at least five. The at least five side rods 3 on the inner side of the frame 2 each have two inner suspension rods 30, which, together with the at least ten outer suspension rods 20 arranged on the outer side of the frame 2, enable the same frame 2 to hang at least twenty workpieces. The frame 2 has at least five layers, so that the hanger can hang and shot blast at least one hundred workpieces at a time, increasing the number of workpieces shot blasted in a single operation and improving production efficiency.

[0029] Example 2: See appendix Figure 3 - Appendix Figure 4 Based on Embodiment 1 of this utility model, the outer wall of the main rod 1 has an external thread, the frame 2 has a connecting ring 4 at the inner center, the outer side of the connecting ring 4 is connected to the side rod 3, the connecting ring 4 is sleeved on the main rod 1, the inner side of the connecting ring 4 has a threaded groove that mates with the external thread, the side rod 3 is equipped with a locking member 5, the locking member 5 includes a slider 50 that is slidably connected to the side rod 3, and the slider 50 has a protrusion 51 that can extend into the threaded groove.

[0030] The locking component 5 also includes a base 52 installed on the side rod 3. The base 52 is located near the connecting ring 4. The side rod 3 has a slide rail. The slider 50 can slide in the slide rail along the extension direction of the side rod 3. The slider 50 has a protrusion 51 on the side near the main rod 1. A spring 53 is connected between the side of the slider 50 away from the main rod 1 and the base 52. When the protrusion 51 is engaged with the threaded groove, the connecting ring 4 cannot slide relative to the main rod 1, and the spring 53 is in a compressed state.

[0031] The frame 2 is connected to the connecting ring 4 via radial side rods 3. The connecting ring 4 can rotate and slide relative to the main rod 1 to adjust the height of each frame 2. On the one hand, it facilitates the quick adjustment of the spacing between the frames 2 according to the size of the workpiece to be shot blasted, improving the adaptability of the hanger to different workpieces. On the other hand, adjusting each frame 2 to a suitable height ensures that the workpiece suspended on the frame 2 is located on the same side of the shot blasting position, thereby improving the shot blasting effect of the shot blasting machine on the workpiece. Without extending the shot blasting time and shot volume, the workpiece processing effect is improved.

[0032] Multiple frames 2 can carry their inner side rods 3 and achieve quick disassembly by rotating and sliding on the main rod 1 through the connecting ring 4. When individual frames 2 are damaged, deformed or broken, it is not necessary to replace the entire hanger. By removing the corresponding connecting ring 4 from the main rod 1 and replacing it, the hanger can be maintained and used normally, reducing the cost of using the hanger.

[0033] When the hanger is not in use, each frame 2 can be removed from the main rod 1 by sliding the connecting ring 4. Each frame 2 can be stacked, reducing the space occupied by the hanger when it is not in use. It is easy to store and assemble, and can reduce the possibility of collision damage when transferring the hanger. In addition, since the inner suspension rod 30 and the outer suspension rod 20 are inclined upward, when each frame 2 is stacked, the upwardly inclined suspension rod can pass through the inner side of the frame 2 above it, forming a limit for adjacent stacked frames 2, reducing the risk of the frame 2 sliding and falling when stacked, and reducing the maintenance cost of the frame 2.

[0034] It should be noted that the application fields of the mounting bracket disclosed in this utility model include, but are not limited to, transmission housings. During shot blasting, the shot continuously impacts the workpiece surface, generating vibration interference. This vibration is transmitted sequentially through the skeleton 2, side rod 3, and connecting ring 4 to the main rod 1, causing vibration at the threaded connection between the connecting ring 4 and the main rod 1, leading to wear at the threaded joint. This invention incorporates a locking element 5. Under the tension of the spring 53, the protrusion 51 on one side of the slider 50 contacts and compresses the threaded groove, thus pressing the connecting ring 4 and the main rod 1 together at the threaded connection. This reduces the possibility of vibration and misalignment of the threaded groove of the connecting ring 4 relative to the external thread of the main rod 1, protecting the thread and threaded groove structure. This reduces the possibility of jamming due to thread wear, ensuring smooth disassembly and assembly of the skeleton 2. On the other hand, since the main rod 1 rotates continuously during shot blasting, and the workpieces suspended on the skeleton 2 bring a large load, and with the vibration interference during shot blasting, the connecting ring 4 may slip relative to the main rod 1 and rotate. The slider 50, through the cooperation of the protrusion 51 and the thread groove, can limit the axial displacement of the connecting ring 4 relative to the main rod 1, thereby stabilizing the relative height of the skeleton 2, avoiding the possibility of workpieces of different heights colliding with each other due to the sliding of the connecting ring 4, reducing the probability of product damage, and improving the yield.

[0035] Since the protrusion 51 can extend into the thread to form the longitudinal displacement restriction of the connecting ring 4, it can reduce the manufacturing precision requirements of the external thread of the main rod 1 and the inner thread groove of the connecting ring 4, and reduce the processing difficulty of the straight rod 1 and the connecting ring 4.

[0036] Example 3: See appendix Figure 5 Based on Embodiment 2 of the present invention, the side rod 3 is a square tube, and a square sliding sleeve 6 is fitted on the side rod 3. The inner suspension rod 30 is connected to the sliding sleeve 6, and the inner suspension rod 30 is fixed to both sides of the sliding sleeve 6.

[0037] By sliding the sleeve 6 on the side rod 3, the position of the inner suspension rod 30 on either side rod 3 can be adjusted. When suspending the gearbox housing, since the size of the shot blasting is not fixed, the position of the inner suspension rod 30 can be adjusted to adapt to workpieces with different lateral dimensions, realize the reasonable spatial layout of the workpiece on the hanger, and avoid the hangers squeezing each other or excessively blocking each other, which would affect the shot blasting effect and efficiency. When suspending workpieces, some suspension rods may not have any workpieces suspended on them. In this case, the frame 2 or side rod 3 without workpieces will be subjected to uneven load, and the main rod 1 is prone to tilting. During shot blasting, when the frame 2 carries the workpieces and rotates, it is impossible to make each workpiece evenly contact the shot. The adjustable inner suspension rod 30 provided by this utility model can adjust the distance between the workpiece on the inner suspension rod 30 and the main rod 1, so that the entire hanger can be suspended vertically in the shot blasting machine and rotated. This solves the problem of uneven workpiece distribution causing the main rod 1 to tilt, and improves shot blasting efficiency and shot blasting stability.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixture for improving shot blasting efficiency, comprising: The main rod (1) has a suspension hook (10) at its upper end. The main rod (1) is characterized by having multiple skeletons (2) connected to its periphery. The skeletons (2) are ring-shaped. The multiple skeletons (2) are spaced apart along the axial direction of the main rod (1). The skeletons (2) are provided with outer suspension rods (20). The skeletons (2) are fixedly connected to side rods (3) on their inner side near the main rod (1). The side rods (3) are radially distributed with the main rod (1) as the center. The skeletons (2) include at least five straight rods. The length of the straight rods is greater than that of the side rods (3). The multiple straight rods are connected end to end. Adjacent straight rods form an obtuse angle near the main rod (1) at the connection point.

2. The fixture for improving shot blasting efficiency according to claim 1, characterized in that: The side rod (3) connects the frame (2) and the main rod (1), and the side rod (3) is provided with an inner suspension rod (30).

3. The fixture for improving shot blasting efficiency according to claim 1, characterized in that: There are at least five side rods (3) inside any of the said skeletons (2), and the extension lines of adjacent side rods (3) can intersect and form an acute angle.

4. The fixture for improving shot blasting efficiency according to claim 1, characterized in that: The side rod (3) is fixed at the connection of the adjacent straight rod, and the two adjacent side rods (3) and the straight rod between them form a triangular frame.

5. The fixture for improving shot blasting efficiency according to claim 1, characterized in that: There are at least ten outer suspension rods (20), which are evenly distributed on the outside of the frame (2) away from the main rod (1). The outer suspension rod (20) is provided in the middle of the straight rod, and the outer suspension rod (20) is also provided at the connection of adjacent straight rods.

6. A fixture for improving shot blasting efficiency according to claim 2, characterized in that: Each of the side rods (3) is provided with an inner suspension rod (30) on both sides.

7. The fixture for improving shot blasting efficiency according to claim 1, characterized in that: The outer suspension rod (20) extends away from the main rod (1) and tilts upward.

8. A fixture for improving shot blasting efficiency according to claim 2, characterized in that: The inner suspension rod (30) extends away from the side rod (3) and tilts upward.

9. A fixture for improving shot blasting efficiency according to claim 1, characterized in that: The skeleton (2) has at least five parts.

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