A sanding machine guard structure for processing a thread rolling die
By designing a protective body and a dust collection box diversion structure on the belt sander, the problem of chip accumulation is solved, and effective chip diversion and cleaning are achieved, which facilitates maintenance operations and improves processing stability and environmental cleanliness.
Patent Information
- Application Number
- CN202621262154.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-14
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2036-08-14
AI Technical Summary
When processing thread rolling plates, existing belt sanders cause shavings to accumulate in the gap between the protective structure and the working surface of the sander belt, affecting the grinding accuracy and increasing the difficulty of cleaning.
A protective structure was designed, including a protective body and a dust collection box. Through the diversion and cooperation of a first channel and a second channel, the effective diversion and treatment of debris is achieved. The first channel is formed between the protective body and the working surface of the sanding belt, and the second channel is formed between the chip inlet and the dust collection box. The dust collection box is used to collect splashed debris.
It effectively prevents the accumulation of shavings in the gaps, improves the stability of the grinding process and the ease of cleaning, and enhances the cleanliness of the working environment.
Smart Images

Figure CN224927715U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of belt sander, and specifically refers to a protective structure for belt sander used in processing thread rolling plates. Background Technology
[0002] Belt sanders are commonly used for surface finishing of thread rolling dies to remove oxide scale produced after heat treatment and to polish the threads. During processing, the thread rolling die is pressed against the working surface of a high-speed rotating sanding belt, and the surface treatment is completed through grinding action.
[0003] Existing belt sanders mostly use L-shaped thin plates as chip-blocking structures, which are bolted to the frame and suspended above the sanding belt. This structure only passively blocks chip splashes; it cannot handle chips that have already passed through the gap between the bottom of the baffle and the working surface of the sanding belt. When processing large volumes, a large amount of chips accumulate in this gap, gradually forming hard lumps, reducing the gap or even clogging it, affecting grinding accuracy and increasing cleaning difficulty. Therefore, there is an urgent need for a protective structure for belt sanders that can divert and reduce chip accumulation in the gap. Utility Model Content
[0004] This invention allows most of the debris to pass through a first channel between the protective body and the working surface of the sanding belt, while a second channel formed by the side debris inlet and the dust collection box collects and temporarily stores the splashed debris, thus achieving the diversion and treatment of the debris and solving the problems mentioned in the background art.
[0005] The purpose of this utility model is achieved as follows: a protective structure for a belt sander used in processing thread rolling plates, comprising: The protective body spans across the working surface of the sanding belt and has a cavity extending along its length inside. The side of the protective body has a chip-facing surface, and a chip inlet communicating with the cavity is provided on the chip-facing surface. A dust collection box is inserted into the cavity in a retractable manner to collect dust entering from the dust inlet; At least one fastener is provided for securing the protective body to the frame of the belt sander; The protective body and the working surface of the sanding belt form a first channel for the passage of chips, and the chip inlet and the dust collection box form a second channel for the temporary storage of chips.
[0006] The present invention is further configured such that the fixing member is a fastening bolt.
[0007] The present invention is further configured such that the dust collection box and the cavity are in sliding fit, and one end of the cavity is provided with an opening for inserting or removing the dust collection box.
[0008] The present invention is further provided that the protective body is provided with an air blowing interface for the nozzle of the air gun to extend into.
[0009] The present invention is further provided that the outer end of the dust collection box is provided with a handle.
[0010] The present invention is further provided that the dust collection box is provided with an anti-detachment structure for positioning the dust collection box in the cavity.
[0011] The present invention is further configured such that the anti-detachment structure is a magnetic suction component located at the outer end of the dust collection box corresponding to the cavity opening.
[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By combining the flow of the first and second channels, most of the dust particles pass through from the bottom, while some dust particles enter the dust collection box for temporary storage, effectively preventing dust particles from accumulating in the gaps and improving the stability of the grinding process.
[0013] 2. The sliding and pulling mechanism between the dust collection box and the cavity eliminates the need to disassemble the main structure for cleaning debris, simplifying maintenance and improving the convenience of daily use.
[0014] 3. Through the synergistic effect of the side chip inlet and the dust collection box, the splashed chips are actively collected inside, reducing chip spillage and improving the cleanliness of the working environment. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a first partially enlarged structural schematic diagram of the present invention; Figure 3 This is a second enlarged structural schematic diagram of the present invention.
[0016] The attached diagram is labeled as follows: 1. Protective body; 2. Sanding belt; 3. Cavity; 4. Chip-facing surface; 5. Chip inlet; 6. Dust collection box; 7. Fixing component; 8. Frame; 9. First channel; 10. Second channel; 11. Opening; 12. Air blowing interface; 13. Handle; 14. Anti-detachment structure; 140. Magnetic component. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 : Example 1:
[0018] This embodiment provides a protective structure for a belt abrasive machine used for processing thread rolling plates, including: The protective body 1 spans across the working surface of the sanding belt 2 and has a cavity 3 extending along its length inside. The side of the protective body 1 has a chip-receiving surface 4 and a chip inlet 5 communicating with the cavity 3 is provided on the chip-receiving surface 4. The dust collection box 6 is inserted into the cavity 3 in a retractable manner and is used to collect the dust entering from the dust inlet 5. At least one fastener 7 is used to fix the protective body 1 to the frame 8 of the sander 2; The protective body 1 and the working surface of the sand belt 2 form a first channel 9 for the passage of dust, and the dust inlet 5 and the dust collection box 6 form a second channel 10 for the temporary storage of dust.
[0019] The protective body 1 is a single, elongated block made of metal, with an overall hollow cuboid shape. The protective body 1 spans across the working surface of the sanding belt 2 and is fixed to the frame 8 of the sanding belt 2 via connecting parts at its ends. An internal cavity 3 runs along the length of the protective body 1, accommodating the dust collection box 6. A chip-facing surface 4 is formed on the side of the protective body 1 facing the direction of chip splashing. A chip inlet 5, a long, narrow opening 11, extends along the length of the protective body 1, penetrating its side wall and communicating with the internal cavity 3. The chip inlet 5 is positioned higher than the bottom surface of the protective body 1, allowing chips splashed from the working surface of the sanding belt 2 to enter the cavity 3 from the side.
[0020] When the sanding belt 2 is running, the flying debris is not perpendicular to the surface of the sanding belt 2 and flies out in a parabolic trajectory along the tangential direction of the sanding belt 2. The debris inlet 5 is located on the side of the protective body 1 and faces the direction of the flying debris, so that the debris flying out tangentially can be directly injected into the debris inlet 5. If the debris inlet 5 is located at the bottom of the protective body 1, it can only catch vertically falling debris, and the collection effect on debris flying tangentially is limited. Therefore, the side-mounted debris inlet arrangement matches the actual movement trajectory of the debris, improving the efficiency of debris entering the dust collection box 6.
[0021] The dust collection box 6 is a rectangular box-shaped component that matches the shape of the cavity 3, and it is inserted into the cavity 3 of the protective body 1 in a pull-out manner. Each of the two inner walls of the cavity 3 has an inwardly recessed guide groove along its length, and each of the two outer walls of the dust collection box 6 has a corresponding outwardly protruding guide rail. The guide rails are embedded in the guide grooves, and there is a sliding contact between them. The guide grooves provide vertical and lateral limits to the guide rails, ensuring that the dust collection box 6 maintains a stable direction of movement without swaying during the pulling process. Through the cooperation of the guide rails and guide grooves, the dust collection box 6 can move smoothly back and forth along the length of the cavity 3. One end of the dust collection box 6 is the insertion end, and the other end is the outer end. When the dust collection box 6 is fully inserted into the cavity 3, its outer end is flush with the opening 11 of the cavity 3, at which point the dust collection box 6 is in the working position. The dust collection box 6 is used to receive and temporarily store the dust entering from the dust inlet 5, and its hollow interior forms a storage space.
[0022] The fastener 7 is a fastening bolt that passes through the pre-drilled mounting holes on the protective body 1 and locks the protective body 1 to the frame 8 of the belt sander 2. There is at least one fastener 7, but multiple fasteners can be provided depending on the length of the protective body 1 and installation requirements, to ensure that the protective body 1 remains stable during operation.
[0023] One end of the cavity 3 is provided with an opening 11, which is a channel for inserting or removing the dust collection box 6. The shape of the opening 11 matches the shape of the outer end of the dust collection box 6. When the dust collection box 6 is inserted into the cavity 3, the opening 11 allows the outer end of the dust collection box 6 to be exposed to the outside of the protective body 1.
[0024] The air blowing interface 12 is located on the wall of the protective body 1 and is a circular hole penetrating the wall. The air blowing interface 12 is connected to the interior of the cavity 3, and its outer port is used to connect the nozzle of the air gun. When the air gun is connected, compressed air can enter the interior of the cavity 3 through the air blowing interface 12 to blow away and clean the dust residue remaining in the dust collection box 6 or at the bottom of the cavity 3.
[0025] A handle 13 is located at the outer end of the dust collection box 6 and is a block-shaped or ring-shaped structure protruding from the outer end surface. The handle 13 is integrally formed with the dust collection box 6 or fixed by a connector, and is used for operators to grip and pull out the dust collection box 6.
[0026] The anti-detachment structure 14 is used to position the dust collection box 6 within the cavity 3, preventing it from slipping off during the vibration of the sander belt 2. The anti-detachment structure 14 is a magnetic suction device, located at the outer end of the dust collection box 6 corresponding to the opening 11 of the cavity 3. The magnetic suction device can be made of a permanent magnet and embedded in the surface of the outer end of the dust collection box 6. When the dust collection box 6 is inserted into the cavity 3 to the working position, the magnetic suction device and the metal wall surface at the opening 11 of the protective body 1 are magnetically attracted, thereby holding the dust collection box 6 within the cavity 3.
[0027] The protective body 1 is made of metal, and the wall surface at its opening 11 is magnetic. The magnetic force generated by the magnetic suction component is sufficient to resist the vibration generated during the normal operation of the sander belt 2, ensuring that the dust collection box 6 remains positioned during operation. If the protective body 1 is made of non-metallic material, a metal sheet can be embedded in the corresponding position on the inner wall at the opening 11 of the cavity 3. The magnetic suction component and the metal sheet are attracted by magnetic force, which can also achieve the positioning function.
[0028] The first channel 9 is formed by the gap between the protective body 1 and the working surface of the sanding belt 2. After the protective body 1 is fixed to the frame 8, a gap of a predetermined height is left between its bottom surface and the working surface of the sanding belt 2. This gap extends along the width direction of the sanding belt 2, allowing most of the debris to pass through from the bottom.
[0029] The second channel 10 is composed of a chip inlet 5 and a dust collection box 6. The chip inlet 5 serves as the entrance for chip dust, and the dust collection box 6 serves as a container for temporary storage of chip dust. The two are connected by a cavity 3, forming a path from the external splash area to the internal storage area.
[0030] In this embodiment, the protective body 1 is locked to the frame 8 of the sander 2 by the fastener 7, and its position spans across the working surface of the sander 2. A first channel 9 is reserved between the bottom surface of the protective body 1 and the working surface of the sander 2, allowing the chips generated during processing to pass through from the bottom, ensuring the normal operation of the sanding operation.
[0031] When the abrasive belt 2 rotates at high speed to grind the thread rolling plate, some of the chips are splashed along the direction of the abrasive belt 2. A portion of the splashed chips facing the side of the protective body 1 impacts the chip-facing surface 4. Since the chip-facing surface 4 has a chip inlet 5, these chips enter the cavity 3 inside the protective body 1 through the chip inlet 5 and fall into the dust collection box 6 inserted into the cavity 3 for temporary storage. The dust collection box 6 serves as a temporary storage container for the chips, preventing the splashed chips from scattering into the working environment.
[0032] As processing time accumulates, the dust collection box 6 gradually accumulates debris. When cleaning is required, the operator holds the handle 13 and pulls it outward, overcoming the magnetic attraction between the magnetic component and the protective body 1, to remove the dust collection box 6 from the cavity 3. After emptying the debris from the dust collection box 6, it is pushed back into the cavity 3. The magnetic component then re-attaches to the opening 11 of the protective body 1, positioning the dust collection box 6 in the working position and preventing it from loosening during vibration.
[0033] For the fine dust remaining at the bottom of cavity 3 or in dust collection box 6, the nozzle of the air gun can be connected to the air blowing interface 12 to blow compressed air into the cavity 3, so that the residual dust can be discharged from the opening 11 or the chip inlet 5 of cavity 3.
[0034] Through the synergistic effect of the first channel 9 and the second channel 10, most of the debris passes through the bottom, while some of the splashed debris enters the dust collection box 6 through the side debris inlet 5 for temporary storage. This achieves the diversion and treatment of debris, preventing debris from accumulating and clogging in the gap between the protective body 1 and the sand belt 2.
[0035] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A protective structure for a belt abrasive machine used for processing thread rolling dies, characterized in that, include: The protective body (1) spans across the working surface of the sand belt (2), and has a cavity (3) extending along the length direction inside. The side of the protective body (1) has a chip-facing surface (4), and a chip inlet (5) communicating with the cavity (3) is provided on the chip-facing surface (4). The dust collection box (6) is inserted into the cavity (3) in a retractable manner to collect the dust entering from the dust inlet (5); At least one fastener (7) is used to fix the protective body (1) to the frame (8) of the belt sander (2); The protective body (1) and the working surface of the sand belt (2) form a first channel (9) for the passage of dust, and the dust inlet (5) and the dust collection box (6) form a second channel (10) for the temporary storage of dust.
2. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 1, characterized in that, The fastener (7) is a fastening bolt.
3. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 1, characterized in that, The dust collection box (6) and the cavity (3) are in sliding fit, and one end of the cavity (3) is provided with an opening (11) for the dust collection box (6) to be inserted or pulled out.
4. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 1, characterized in that, The protective body (1) is provided with an air blowing interface (12) for the nozzle of the air gun to be inserted.
5. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 1, characterized in that, The dust collection box (6) is provided with a handle (13) at its outer end.
6. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 1, characterized in that, The dust collection box (6) is provided with an anti-detachment structure (14) for positioning the dust collection box (6) in the cavity (3).
7. The protective structure for a belt abrasive machine used for processing thread rolling plates according to claim 6, characterized in that, The anti-detachment structure (14) is a magnetic suction component located at the outer end of the dust collection box (6) corresponding to the opening (11) of the cavity (3).
