A fully wrapped sanding chuck guard with retractable cloth bag

Abstract

The utility model discloses a full -wrap type sand blasting chuck protective cover with retractable cloth bag, including turntable main part, turntable chuck, the periphery of turntable chuck is provided with chuck periphery cover, the periphery cover of chuck is connected with turntable chuck through periphery cover fixed bolt, the outside of periphery cover of chuck is provided with double -open cloth bag, one end of double -open cloth bag is fixed on the periphery cover of chuck through the hoop, and the other end is wrapped in the periphery of workpiece, and is fixed through the magic tape of retracting cloth bag, the outer surface of periphery cover of chuck is provided with annular groove, is used in the non -working state when receiving double -open cloth bag, the utility model discloses good sealing protection performance, adopts the full -wrap type design from chuck until workpiece, and the magic tape of combining cloth bag end is tight and the film at interface, has formed multistage dynamic sealing, has solved the problem of shaft head scratch fundamentally, has improved product quality and work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical protection technology, and in particular to a fully enclosed sandblasting chuck protective cover with a retractable cloth bag. Background Technology

[0002] In metal surface treatment sandblasting, abrasive particles (such as silica sand and steel shot) are blasted at a pressure of 0.5-0.8 MPa. During this process, approximately 15-30% of the abrasive particles will penetrate into the chuck clamping area, mainly through the gap between the chuck jaws and the shaft head. Figure 1 As shown. The intrusion of sand particles can cause many problems: 1) Shaft head surface damage: High-speed impact and friction of sand particles on the shaft head surface creates obvious groove-like scratches, damaging the integrity of the shaft head surface.

[0003] 2) Product quality is affected: ① Decreased assembly accuracy: The clearance between the shaft and the hole increases due to scratches on the shaft end, resulting in excessive runout and failure to meet the assembly accuracy requirements.

[0004] ② Increased workpiece rejection rate: Due to the precision problem of the shaft head, the processed workpieces do not meet the quality standards, resulting in an increased rejection rate.

[0005] ③ Increased secondary processing costs: Each damaged workpiece requires an additional polishing process when it is reworked, which takes 15-20 minutes per piece, significantly increasing the total production cost.

[0006] Existing technologies lack effective protective structures for chuck shaft heads in sandblasting operations, failing to address the aforementioned problems caused by sand particle intrusion. Therefore, there is an urgent need for a protective device that can effectively block sand particles and protect the shaft head. Summary of the Invention

[0007] The purpose of this utility model is to solve the above-mentioned technical problems and provide a fully enclosed sandblasting chuck protective cover with a retractable cloth bag, so as to solve the problems of sand particles entering the chuck during sandblasting operations, causing shaft head scratches, equipment wear and product quality degradation, and achieving the goal of reducing maintenance costs and improving adaptability.

[0008] To achieve the above technical objectives and requirements, the technical solution adopted by this utility model is as follows: a fully enclosed sandblasting chuck protective cover with a retractable cloth bag, comprising a turntable body and a turntable chuck. An outer circumference sleeve is provided around the turntable chuck, and the outer circumference sleeve is connected to the turntable chuck via outer circumference sleeve fixing bolts. A double-opening cloth bag is provided on the outer side of the outer circumference sleeve. One end of the double-opening cloth bag is fixed to the outer circumference sleeve by a clamp, and the other end wraps around the workpiece and is secured with Velcro by folding the bag. An annular groove is provided on the outer surface of the outer circumference sleeve for storing the double-opening cloth bag when not in operation. The cover also includes a cloth bag retrieval rope, which is fixed to the outer circumference sleeve by a retrieval rope fixing bolt for securing the retrieved double-opening cloth bag.

[0009] Preferably, the chuck outer circumference sleeve has bolt holes evenly distributed around its inner ring, and the outer circumference sleeve fixing bolts pass through these bolt holes to connect with the turntable chuck.

[0010] Preferably, a film is provided between the double-opening cloth bag and the workpiece shaft head, and between the Velcro fastener used to close the cloth bag and the double-opening cloth bag, to enhance sealing and prevent sand particles from entering.

[0011] Preferably, the outer circumferential sleeve of the chuck is made of high-strength polyethylene plastic.

[0012] Compared with the traditional structure, the beneficial effects of this utility model are: 1. This utility model has a simple structure, reasonable design, and excellent sealing and protection performance. It adopts a full-wrap design from the chuck to the workpiece, combined with the Velcro closure at the end of the bag and the thin film at the interface, forming a multi-stage dynamic seal. The sand particle rejection rate is expected to be no less than 90.7%. Under a sandblasting pressure of 0.6MPa, the sand particle intrusion can be controlled to below 0.1g / h, effectively avoiding problems such as shaft head scratches, decreased equipment precision, and increased workpiece defect rate. It fundamentally solves the shaft head scratch problem and improves product quality.

[0013] 2. Convenient retractable structure: Through the action of the annular groove and the buckle, the cloth bag can be quickly gathered and fixed after the sandblasting operation, which greatly facilitates the subsequent workpiece roundness correction, runout detection and clamping operation, and improves work efficiency.

[0014] 3. The use of low-cost and readily available materials such as high-strength polyethylene plastic and wear-resistant fabrics reduces spare parts consumption; at the same time, the structural design simplifies the maintenance process, significantly shortens maintenance time, and reduces overall operating costs. Attached Figure Description

[0015] Figure 1 A diagram illustrating how sand particles can intrude into the chuck clamping area; Figure 2This is a schematic diagram of the structure of this utility model (bag in unfolded state); Figure 3 This is a schematic diagram of the outer peripheral sleeve structure of the chuck of this utility model; Figure 4 for Figure 3 AA view; Figure 5 This is a schematic diagram of the bag of this utility model in its gathered state; Figure 6 for Figure 5 Enlarged view at point X; In the diagram: 1. Turntable body, 2. Clamp, 3. Outer peripheral sleeve fixing bolt, 4. Chuck outer peripheral sleeve, 41. Annular groove, 5. Double-opening cloth bag (expanded state), 6. Velcro for closing the cloth bag, 7. Turntable chuck, 8. Workpiece, 9. Rope fixing bolt, 10. Rope for recycling the cloth bag, 11. Cloth bag (recycled state). Detailed Implementation

[0016] The present invention will be further described below.

[0017] See attached document Figure 1 - Appendix Figure 6 A fully enclosed sandblasting chuck protective cover with a retractable cloth bag includes a turntable body 1 and a turntable chuck 7. The turntable chuck 7 is provided with a chuck outer peripheral sleeve 4, which is connected to the turntable chuck 7 by an outer peripheral sleeve fixing bolt 3. A double-opening cloth bag 5 is provided on the outside of the chuck outer peripheral sleeve 4. One end of the double-opening cloth bag 5 is fixed to the chuck outer peripheral sleeve 4 by a clamp 2, and the other end is wrapped around the outer periphery of the workpiece 8 and fixed by Velcro 6 to close the cloth bag. The outer surface of the chuck outer peripheral sleeve 4 is provided with an annular groove 41 for storing the double-opening cloth bag 5 when not in operation. It also includes a cloth bag recycling rope 10, which is fixed to the chuck outer peripheral sleeve 4 by a rope fixing bolt 9 to fix the double-opening cloth bag 5 after recycling.

[0018] In this preferred embodiment, bolt holes are evenly distributed around the inner ring of the outer circumference of the chuck outer sleeve 4, and the outer sleeve fixing bolt 3 passes through the bolt holes and connects to the turntable chuck 7.

[0019] In this preferred embodiment, a thin film is provided between the double-opening cloth bag 5 and the workpiece shaft head, and between the Velcro 6 used to close the cloth bag and the double-opening cloth bag 5, to enhance sealing and prevent sand particles from entering.

[0020] In this preferred embodiment, the outer peripheral sleeve 4 of the chuck is made of high-strength polyethylene plastic.

[0021] In practice, one end of the double-opening cloth bag 5 is tightly fixed to a specific position on the outer periphery of the chuck sleeve 4 by the clamp 2 to prevent it from falling off. During sandblasting, the other end of the cloth bag 5 is pulled out to wrap around the shaft end of the workpiece 8, and then the bag is tightened and fixed with Velcro 6 sewn to the end of the cloth bag, forming the first seal. To enhance the sealing effect, a layer of soft plastic film 13 can be pre-wrapped at the contact point between the cloth bag 5 and the shaft end of the workpiece, and between the Velcro 6 and the binding contact surface of the cloth bag 5, forming a second dynamic seal, effectively preventing the intrusion of fine sand particles.

[0022] When the sandblasting operation is completed and it is necessary to check the workpiece's circular runout or proceed to the next process, the Velcro 6 can be loosened to remove the cloth bag 5 from the workpiece 8. Then, manually gather the cloth bag 5 and insert it into the annular groove 12 on the chuck's outer peripheral sleeve 4. Finally, use the cloth bag recovery buckle 10 to wrap around the gathered cloth bag 11, and fix the end of the buckle to the chuck's outer peripheral sleeve 4 with the buckle fixing bolt 9, so that the protective cover is in a tight gathered state and will not interfere with subsequent operations.

[0023] The above embodiments of this utility model are merely examples to clearly illustrate this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by each claim.

Claims

1. A fully enclosed sandblasting chuck protective cover with a retractable cloth bag, comprising a turntable body (1) and a turntable chuck (7), characterized in that: The turntable chuck (7) is provided with a chuck outer sleeve (4) on its outer periphery. The chuck outer sleeve (4) is connected to the turntable chuck (7) by an outer sleeve fixing bolt (3). A double-opening cloth bag (5) is provided on the outside of the chuck outer sleeve (4). One end of the double-opening cloth bag (5) is fixed to the chuck outer sleeve (4) by a clamp (2), and the other end is wrapped around the outer periphery of the workpiece (8) and fixed by a Velcro fastener (6) to gather the cloth bag. An annular groove (41) is provided on the outer surface of the chuck outer sleeve (4) for storing the double-opening cloth bag (5) when not in operation. The chuck outer sleeve (4) also includes a cloth bag recycling buckle (10). The cloth bag recycling buckle (10) is fixed to the chuck outer sleeve (4) by a buckle fixing bolt (9) for fixing the double-opening cloth bag (5) after recycling.

2. The fully enclosed sandblasting chuck protective cover with a retractable cloth bag according to claim 1, characterized in that: The chuck outer sleeve (4) has bolt holes evenly distributed around its inner circumference, and the outer sleeve fixing bolt (3) passes through these bolt holes to connect with the turntable chuck (7).

3. The fully enclosed sandblasting chuck protective cover with a retractable cloth bag according to claim 1, characterized in that: A film is provided between the double-opening cloth bag (5) and the workpiece shaft head, and between the Velcro (6) for closing the cloth bag and the double-opening cloth bag (5), to enhance sealing and prevent sand particles from entering.

4. The fully enclosed sandblasting chuck protective cover with a retractable cloth bag according to claim 1, characterized in that: The outer sleeve (4) of the chuck is made of high-strength polyethylene plastic.

Images