Surface treatment device and treatment method for torsion spring production

Abstract

The present invention provides a surface treatment device for torsion spring production and a treatment method thereof, which relate to the field of torsion spring surface treatment. The present invention comprises a material guide frame, a viewing window, a fine grinding frame and a flow increasing component; the side wall of the fine grinding frame is symmetrically provided with two material guide frames, the two material guide frames are connected to the fine grinding frame, and are used for steel to pass through the material guide frame and the fine grinding frame; a viewing window is provided on the outside of the fine grinding frame, and the viewing window and the fine grinding frame form a closed cavity, and a grinding medium is injected into the closed cavity to stimulate the grinding medium to roll in the closed cavity, thereby increasing the contact force, speed and frequency between the grinding medium and the steel, and obtaining a better quality fine grinding effect. At the same time, due to the rolling of the grinding medium, the accumulated grinding debris is finely separated to avoid the problem of metal debris accumulation and scratches on the steel surface caused by mutual friction.

Description

Technical Field

[0001] The present invention relates to the field of torsion spring surface treatment, and in particular to a surface treatment device for torsion spring production and a treatment method thereof. Background Art

[0002] A torsion spring is a mechanical part that uses elasticity to work. It is generally made of spring steel and is used to control the movement of mechanical parts, alleviate impact or vibration, store energy, measure the magnitude of force, etc. A torsion spring is a torsion spring. It has a more complex design principle than all spring types, and its types vary quite frequently. Therefore, the theory involved in its design is also the most complicated.

[0003] Surface treatment is a process of artificially forming a surface layer on the surface of the base material that has different mechanical, physical and chemical properties from the base material. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. For metal castings, commonly used surface treatment methods include mechanical grinding, chemical treatment, surface heat treatment, and spraying surface. Surface treatment is to clean, sweep, deburr, degrease, and descale the workpiece surface.

[0004] For the production and processing of torsion springs, surface treatment process is an indispensable processing content, and the most critical step is surface fine grinding. This treatment aims to carry out comprehensive wrap-type grinding of spring steel through grinding media to ensure that the surface of the steel is uniform and rough, which is conducive to subsequent processing. At present, this surface treatment process is mostly carried out by pulling the steel into the grinding body to implement fine grinding under the mutual friction during pulling. However, looking at the overall fine grinding effect, firstly, although there is contact friction, the friction force is not strong and the fine grinding effect is general. Secondly, the metal debris ground out is difficult to be discharged from the pulling path, so that the steel surface is damaged when the metal debris contacts the steel. Summary of the Invention

[0005] The object of the present invention is to provide a surface treatment device and a treatment method for torsion spring production to solve the above technical problems.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A surface treatment device for torsion spring production, characterized by comprising a material guide frame, a viewing window, a fine grinding frame and a flow increasing component;

[0008] The side wall of the fine grinding frame is symmetrically provided with two material guide frames, which are connected to the fine grinding frame and are used for steel to pass through the material guide frames and the fine grinding frame;

[0009] A window is provided on the outside of the fine grinding frame, which forms a closed cavity with the fine grinding frame. Grinding media is injected into the closed cavity for contact friction of steel; a flow increase component is provided in the material guide frame for blowing air into the closed cavity.

[0010] Preferably, the fine grinding frame includes an outer ring, an inner ring is provided inside the outer ring, and two symmetrical connection points are provided between the inner ring and the outer ring near the material guide frame. An air channel is provided in the connection point for blowing the air flow in the material guide frame into the gap formed from the inner ring to the outer ring; the fine grinding frame also includes a nozzle, which is fixed to the inner ring in a ring-shaped arrangement.

[0011] Preferably, the space surrounded by the inner side of the inner ring is a closed cavity, and the nozzle is inserted into the inner ring and extends into the closed cavity.

[0012] Preferably, the material guide frame includes a convex cover, which is fixed to the outside of the outer ring in a symmetrical arrangement, and a placement ring is provided on the inner side thereof, which is connected to the inner ring and spaced apart from the convex cover; the material guide frame also includes a material guide channel, which is provided in the interval between the placement ring and the convex cover, and its two ends are respectively connected with the placement ring and the convex cover.

[0013] Preferably, the material guiding channel divides the interval between the placement ring and the convex cover into two symmetrical flow-increasing chambers.

[0014] Preferably, the flow-increasing assembly includes a fixed roller, which is arranged in the placement ring and has shafts fixed at both ends. The shafts are inserted directly into the placement ring and the convex cover and extend outwards, so as to be connected to the fixed roller for rotation in the placement ring.

[0015] The flow-increasing chamber is provided with a flow-increasing impeller, which is sleeved and fixed to the shaft; the flow-increasing impeller is provided with an adjustment unit on the side facing the fixed roller, which is inserted and fixed at the placement of the annular wall;

[0016] A movable roller is provided on the opposite side of the fixed roller. The movable roller is matched with the fixed roller to form a roller group. Insert shafts are fixed at both ends of the movable roller. The insert shafts are inserted into the adjustment unit and are rotatably connected relative to the adjustment unit.

[0017] Preferably, the rolling surfaces of the fixed roller and the movable roller are both provided with annular grooves, and the surfaces of the annular grooves are evenly provided with contact points for frictional contact between the steel and the annular grooves.

[0018] Preferably, the adjustment unit includes a shaft sleeve, which is inserted and fixed at the wall of the placement ring. A limiting shaft seat is provided on the side of the shaft sleeve facing the movable roller, and the limiting shaft seat is inserted into the placement ring.

[0019] A spring is provided between the limiting shaft seat and the shaft sleeve, one end of the spring is inserted into the shaft sleeve, and the other end contacts the surface of the limiting shaft seat;

[0020] The limiting shaft seat is provided with a steering shaft sleeve on the side facing away from the spring, and a bolt is rotatably connected inside the steering shaft sleeve. The bolt is threadedly inserted into the back wall of the guide frame and extends outward relative to the guide frame for adjusting the relative position of the limiting shaft seat to the shaft sleeve.

[0021] Preferably, a strip groove is provided at the placement ring wall body, and the limiting shaft seat is inserted into the strip groove and is slidably connected relative to the strip groove.

[0022] A method for treating a surface treatment device for torsion spring production, characterized in that it includes the following treatment steps:

[0023] 1) The steel is inserted from one set of guide frames, and during the guidance, it passes through the fine grinding frame and is discharged to another set of guide frames;

[0024] 2) During the process, the steel is moved by pulling, so that the steel rolls and rubs against the flow-increasing component. During the rolling friction, the flow-increasing component generates airflow by rotating, and blows the airflow into the closed cavity at the channel set from the material guide frame to the fine grinding frame, thereby stimulating the grinding medium to roll in the closed cavity, so that the rolling grinding medium is in close contact with the steel, thereby achieving fine grinding treatment.

[0025] The beneficial effects of the present invention are:

[0026] 1. The material guide frame of the present invention is connected to the fine grinding frame, that is, the inner ring is connected to the placement ring, and the outer ring is connected to the convex cover, so that the corresponding spacing is maintained under the connection support of the connection point, and the air flow is guided to the nozzle for ejection, thereby stimulating the grinding medium to surge in the closed cavity.

[0027] 2. During the rotation of the shaft in the present invention, the flow-increasing impeller is driven to rotate in the flow-increasing chamber, and the airflow generated during the rotation is guided to the gap formed between the inner ring and the outer ring, and released by the nozzle, thereby stimulating the grinding medium to roll in the closed chamber, thereby increasing the contact force, speed and frequency between the grinding medium and the steel, and obtaining a better quality fine grinding effect. At the same time, due to the rolling of the grinding medium, the accumulated grinding debris is finely separated to avoid the problem of metal debris accumulation and scratches on the steel surface caused by mutual friction.

[0028] 3. In the present invention, two adjustment units are symmetrically arranged at the roller group, and the adjustment units are independent of each other and do not interfere with each other. During the adjustment period, the relative position between the limit shaft seat and the shaft sleeve is adjusted only by screwing the bolts. During the period, the shaft sleeve and the limit shaft seat are separated by a spring, so as to buffer the vibration generated by the rolling of the steel to the roller group, and secondly, the elastic force is reacted to the surface of the steel, so that the steel can effectively roll and rub with the roller group. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic structural diagram of a surface treatment device for torsion spring production according to the present invention;

[0030] Figure 2 It is a schematic cross-sectional view of the present invention;

[0031] Figure 3 This is a schematic diagram illustrating the spring steel self-processing device of the present invention;

[0032] Figure 4 Schematic diagram of the back structure of the present invention;

[0033] Figure 5 Schematic diagram of the structure of the flow-increasing component in the present invention;

[0034] Figure 6 Schematic diagram of the structure of the regulating unit in the present invention;

[0035] Figure 7 It is a partial structural diagram of the regulating unit in the present invention;

[0036] Figure numerals: 1. material guide frame; 2. window; 3. fine grinding frame; 4. flow increasing assembly; 11. convex cover; 12. mounting ring; 13. material guide channel; 31. nozzle; 32. outer ring; 33. inner ring; 41. flow increasing impeller; 42. fixed roller; 43. adjustment unit; 44. shaft; 45. movable roller; 46. plug-in shaft; 431. bushing; 432. spring; 433. limit shaft seat; 434. steering bushing; 435. bolt. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making any creative work are all within the scope of protection of the present invention.

[0038] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figure 1-7 As shown, a surface treatment device for torsion spring production includes a material guide frame 1, a window 2, a fine grinding frame 3 and a flow increase component 4.

[0041] The side walls of the fine grinding frame 3 are symmetrically provided with two guide frames 1, which are connected to the fine grinding frame 3 and are used for steel to pass through the guide frame 1 and the fine grinding frame 3. The fine grinding frame 3 includes an outer ring 32, and an inner ring 33 is provided inside the outer ring 32. Two symmetrical connection points are provided between the inner ring 33 and the outer ring 32 near the guide frame 1. An air channel is provided in the connection point for blowing the air flow in the guide frame 1 into the gap formed from the inner ring 33 to the outer ring 32; the fine grinding frame 3 also includes a nozzle 31, which is fixed to the inner ring 33 in an annular arrangement. The space surrounded by the inner ring 33 is a closed cavity. The nozzle 31 is inserted into the inner ring 33 and extends into the closed cavity.

[0042] The material guide frame 1 includes a convex cover 11, which is fixed to the outside of the outer ring 32 in a symmetrical arrangement, and a placement ring 12 is provided on the inner side thereof. The placement ring 12 is connected to the inner ring 33 and is spaced apart from the convex cover 11; the material guide frame 1 also includes a material guide channel 13, which is provided in the interval between the placement ring 12 and the convex cover 11, and its two ends are respectively connected with the placement ring 12 and the convex cover 11. The material guide channel 13 divides the interval between the placement ring 12 and the convex cover 11 into two symmetrical flow-increasing chambers.

[0043] In this embodiment, the material guide frame 1 is connected to the fine grinding frame 3, that is, the inner ring 33 is connected to the placement ring 12, and the outer ring 32 is connected to the convex cover 11, so as to maintain a corresponding interval under the connection support of the connection point, and then guide the air flow to the nozzle 31 for ejection, thereby stimulating the grinding medium to surge in the closed cavity.

[0044] In this embodiment, the material guide channel 13 connects the convex cover 11 with the mounting ring 12. After the connection, it forms a flow-increasing cavity and secondly facilitates the insertion of steel into the material guide channel 13, so as to achieve fine grinding processing under the friction of the grinding medium in the closed cavity.

[0045] Example 2

[0046] like Figure 1-7 As shown, a surface treatment device for torsion spring production, the flow-increasing component 4 includes a fixed roller 42, the fixed roller 42 is arranged in the placement ring 12, and a shaft 44 is fixed at both ends of the fixed roller 42, the shaft 44 is directly inserted into the placement ring 12 and the convex cover 11 and extends outward, and is used for the fixed roller 42 to be rotatably connected in the placement ring 12; a flow-increasing impeller 41 is provided in the flow-increasing chamber, and the flow-increasing impeller 41 is sleeved and fixed to the shaft 44; an adjusting unit 43 is provided on the side of the flow-increasing impeller 41 facing the fixed roller 42, and the adjusting unit 43 is inserted and fixed at the wall of the placement ring 12; a movable roller 45 is provided on the opposite side of the fixed roller 42, and the movable roller 45 is adapted to the fixed roller 42 to form a roller group, and an insertion shaft 46 is fixed at both ends of the movable roller 45, and the insertion shaft 46 is inserted into the adjusting unit 43 and is rotatably connected relative to the adjusting unit 43.

[0047] The rolling surfaces of the fixed roller 42 and the movable roller 45 are both provided with annular grooves, and the surfaces of the annular grooves are evenly provided with contact points for frictional contact between the steel and the annular grooves.

[0048] In this embodiment, the steel rolls and rubs against the roller set. During the friction, the shaft 44 connected to the two ends of the fixed roller 42 is inserted into the adjustment unit 43 to achieve synchronous rotation of the shaft 44 and the fixed roller 42. When the shaft 44 rotates, the flow-increasing impeller 41 is driven to rotate in the flow-increasing chamber, and the airflow generated by the rotation is guided into the gap formed between the inner ring 33 and the outer ring 32. The airflow is released by the nozzle 31, which stimulates the grinding medium to roll in the closed chamber.

[0049] Example 3

[0050] like Figure 1-7 As shown, a surface treatment device for torsion spring production, the adjustment unit 43 includes a sleeve 431, the sleeve 431 is inserted and fixed at the wall of the mounting ring 12, and the sleeve 431 is provided with a limiting shaft seat 433 on the side facing the movable roller 45, and the limiting shaft seat 433 is inserted in the mounting ring 12; a spring 432 is provided between the limiting shaft seat 433 and the sleeve 431, one end of the spring 432 is inserted into the sleeve 431, and the other end is in conflict with the surface of the limiting shaft seat 433; the limiting shaft seat 433 is provided with a steering sleeve 434 on the side facing away from the spring 432, and a bolt 435 is rotatably connected in the steering sleeve 434, and the bolt 435 is threadedly inserted into the back wall of the guide frame 1 and extends outward relative to the guide frame 1, and is used to adjust the relative position of the limiting shaft seat 433 to the sleeve 431.

[0051] A strip groove is provided on the wall of the placement ring 12 , and the limiting shaft seat 433 is inserted into the strip groove and is slidably connected relative to the strip groove.

[0052] In this embodiment, the thickness and cross-sectional shape of the steel are not fixed values. Therefore, an adjustment unit 43 is provided to adapt to various types of steel.

[0053] In this embodiment, two adjustment units 43 are symmetrically arranged at the roller group, and the adjustment units 43 are independent of each other and do not interfere with each other. During adjustment, the relative position between the limiting shaft seat 433 and the shaft sleeve 431 is adjusted only by screwing the bolt 435. During this period, the shaft sleeve 431 and the limiting shaft seat 433 are separated by setting a spring 432, so as to buffer the vibration generated by the rolling of the steel to the roller group, and secondly, react the elastic force to the surface of the steel, so that the steel can effectively roll and rub with the roller group.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for torsion spring production, characterized in that: It includes a material guide frame (1), a viewing window (2), a fine grinding frame (3) and a flow increasing component (4); The side wall of the fine grinding frame (3) is symmetrically provided with two material guide frames (1), and the two material guide frames (1) are connected to the fine grinding frame (3) so as to allow steel to pass through the material guide frames (1) and the fine grinding frame (3); A window (2) is provided on the outside of the fine grinding frame (3), and the window (2) and the fine grinding frame (3) form a closed cavity, and a grinding medium is injected into the closed cavity for contact friction of the steel; a flow increasing component (4) is provided in the material guide frame (1) for blowing air into the closed cavity; The material guide frame (1) includes a convex cover (11), which is fixed to the outside of the outer ring (32) in a symmetrical arrangement, and a placement ring (12) is provided on the inner side of the convex cover (11), which is connected to the inner ring (33) and spaced apart from the convex cover (11); the material guide frame (1) also includes a material guide channel (13), which is provided in the interval between the placement ring (12) and the convex cover (11), and its two ends are connected to the placement ring (12) and the convex cover (11) respectively; The material guide channel (13) divides the interval between the placement ring (12) and the convex cover (11) into two symmetrical flow-increasing chambers; The flow increasing assembly (4) includes a fixed roller (42), which is arranged in the placement ring (12). A shaft (44) is fixed at both ends of the fixed roller (42). The shaft (44) is directly inserted into the placement ring (12) and the convex cover (11) and extends outward, and is used for the fixed roller (42) to be rotatably connected in the placement ring (12); A flow-increasing impeller (41) is provided in the flow-increasing chamber, and the flow-increasing impeller (41) is sleeved and fixed to the shaft (44); an adjustment unit (43) is provided on the side of the flow-increasing impeller (41) facing the fixed roller (42), and the adjustment unit (43) is inserted and fixed on the wall of the placement ring (12); A movable roller (45) is provided on the opposite side of the fixed roller (42). The movable roller (45) is matched with the fixed roller (42) to form a roller group. Insert shafts (46) are fixed to both ends of the movable roller (45). The insert shafts (46) are inserted into the adjustment unit (43) and are rotatably connected relative to the adjustment unit (43).

2. A surface treatment device for torsion spring production according to claim 1, characterized in that: The fine grinding frame (3) comprises an outer ring (32), an inner ring (33) is provided inside the outer ring (32), two symmetrical connection points are provided between the inner ring (33) and the outer ring (32) near the material guide frame (1), and air channels are provided in the connection points for blowing the air flow in the material guide frame (1) into the gap formed between the inner ring (33) and the outer ring (32); the fine grinding frame (3) further comprises a nozzle (31), and the nozzle (31) is fixed to the inner ring (33) in an annular arrangement.

3. The surface treatment device for torsion spring production according to claim 2, characterized in that: The space surrounded by the inner side of the inner ring (33) is a closed cavity, and the nozzle (31) is inserted into the inner ring (33) and extends into the closed cavity.

4. The surface treatment device for torsion spring production according to claim 1, characterized in that: The rolling surfaces of the fixed roller (42) and the movable roller (45) are both provided with annular grooves, and the surfaces of the annular grooves are evenly provided with contact points for frictional contact between the steel and the annular grooves.

5. The surface treatment device for torsion spring production according to claim 1, characterized in that: The adjusting unit (43) includes a shaft sleeve (431), the shaft sleeve (431) is inserted and fixed at the wall of the placement ring (12), and a limiting shaft seat (433) is provided on the side of the shaft sleeve (431) facing the movable roller (45), and the limiting shaft seat (433) is inserted at the placement ring (12); A spring (432) is provided between the limiting shaft seat (433) and the shaft sleeve (431), one end of the spring (432) is inserted into the shaft sleeve (431), and the other end contacts the surface of the limiting shaft seat (433); The limiting shaft seat (433) is provided with a steering shaft sleeve (434) on the side facing away from the spring (432). A bolt (435) is rotatably connected in the steering shaft sleeve (434). The bolt (435) is threadedly inserted into the back wall of the guide frame (1) and extends outward relative to the guide frame (1) to adjust the relative position of the limiting shaft seat (433) to the shaft sleeve (431).

6. The surface treatment device for torsion spring production according to claim 5, characterized in that: A strip groove is provided on the wall of the placement ring (12), and the limiting shaft seat (433) is inserted into the strip groove and is slidably connected relative to the strip groove.

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