Bottom sole surface protection device and protection method for surface painting process of motor base

Abstract

The invention discloses a sole surface protection device for a motor base surface painting process, the lower side of a motor base is fixedly connected with a motor foot through supporting legs, and the processing surfaces of the lower end of the motor foot are at least two parallel rectangular sole surfaces; the protective strip can be attached to the sole surface of the foot; and the problem that the bottom sole surface of the motor base is stained with paint in the whole suspension paint spraying or whole paint dipping process of the motor base can be avoided.

Description

Technical Field

[0001] The present invention belongs to the field of motor surface treatment processes. Background Art

[0002] The palm surface of the motor base foot is a machined surface. When installing the motor, since the bottom foot surface of the motor base needs to be flat and fit the motor installation platform, thus ensuring stable and reliable grounding performance and avoiding shaking; during the process of overall suspension painting or overall dipping of the motor base, the bottom foot surface of the motor base will be contaminated with paint, or other sundries will be contaminated due to the paint, so that the contact surface between the bottom foot surface of the subsequent motor base and the motor installation platform may be in poor contact due to the paint coating, resulting in unstable grounding. At the same time, the unevenness of the paint will form a non-surface contact at the contact surface and cause the problem of easy shaking. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the present invention provides a protection device and a protection method for the bottom foot surface of the paint process on the surface of the motor base, which can avoid the problem that the bottom foot surface of the motor base is contaminated with paint during the process of overall suspension painting or overall dipping of the motor base.

[0004] Technical Solution: To achieve the above object, for the protection device of the bottom foot surface of the paint process on the surface of the motor base of the present invention, the lower side of the motor base is fixedly connected with a motor bottom foot through a support leg, and the machined surface at the lower end of the motor bottom foot is at least two parallel rectangular bottom foot surfaces; it further includes a protection strip that can adhere to the bottom foot surface.

[0005] Further, each protection strip corresponds to at least two independent permanent magnets. In the protection state, the protection strip adheres to the bottom foot surface along the length direction, and the two independent permanent magnets are on the side away from the bottom foot surface at both ends of the protection strip. The two independent permanent magnets form a thrust on the protection strip under the magnetic attraction of the bottom foot surface, so that the protection strip adheres to the bottom foot surface along the length direction.

[0006] Further, in order to avoid magnetic shielding, the protection strip is made of non-magnetic materials such as engineering plastics and aluminum.

[0007] Further, adjacent protection strips are fixedly connected through a plurality of connecting arms.

[0008] Further, a circular rubber band is arranged along the contour edge of the fitting surface of the protection strip, a circular hydraulic groove is arranged along the path of the circular rubber band on the fitting surface of the protection strip, the circular rubber band seals the hydraulic groove along the path, and both the inner and outer contour edges of the circular rubber band are hermetically fixed and adhered to the fitting surface of the protection strip through an epoxy resin adhesive;

[0009] At both ends of the side of the protective strip away from the fitting surface, plunger cylinders are integrally and vertically arranged. A permanent magnet column is coaxially arranged inside the plunger cylinder. An annular piston is coaxially and fixedly arranged at the waist of the permanent magnet column. The upper and lower spaces in the plunger cylinder separated by the annular piston are a cavity and a hydraulic chamber respectively. The hydraulic chamber is communicated with a hydraulic ring groove through a liquid guiding channel a inside the protective strip.

[0010] Further, the upper end of the plunger cylinder is hermetically provided with an elastic pressure-adaptive diaphragm, so that the cavity is airtight, and the pressure change in the cavity will cause the elastic pressure-adaptive diaphragm to undergo elastic deformation adaptively.

[0011] Further, a retaining ring is integrally arranged on the inner wall of the upper end of the plunger cylinder. A first spring is coaxially arranged between the annular piston and the retaining ring. A second spring is coaxially arranged between the annular piston and the bottom wall of the hydraulic chamber of the hydraulic chamber.

[0012] In the initial state, the integrated structure formed by the permanent magnet column and the annular piston is stably in a determined position under the common restraint of the first spring and the second spring, and the annular rubber band is in a planar shape.

[0013] Further, a central plunger cylinder is integrally and vertically arranged in the middle of the side of the protective strip away from the fitting surface. A central piston is coaxially arranged inside the central plunger cylinder. The lower side of the central piston is a hydraulic oil reserve chamber. The hydraulic oil reserve chamber is communicated with the hydraulic chamber through a liquid guiding channel b inside the protective strip. An annular internal thread body is integrally arranged on the inner wall of the upper end of the central plunger cylinder. A stud is in threaded fit inside the annular internal thread body. The lower end of the stud is coaxially and synchronously fixed to the central piston. The upper end of the stud is synchronously connected with an assisting rotating wheel. In the initial state, the upper end of the central piston is in limit contact with the annular internal thread body.

[0014] Further, when the permanent magnet column is displaced along the axis to be in limit contact with the bottom wall of the hydraulic chamber, the hydraulic oil in the hydraulic chamber is squeezed into the hydraulic ring groove through the liquid guiding channel a, so that the cross-section at any position of the annular rubber band is convex in an arc shape.

[0015] On the basis that the permanent magnet column is displaced along the axis to be in limit contact with the bottom wall of the hydraulic chamber, the central piston is displaced along the axis, so that the hydraulic oil in the hydraulic oil reserve chamber is sequentially squeezed into the hydraulic ring groove through the liquid guiding channel b, the hydraulic chamber and the liquid guiding channel a, so that the cross-section at any position of the annular rubber band is further significantly convex on the basis of being convex in an arc shape.

[0016] Further:

[0017] Step 1, expose the bottom foot surface of the motor base.

[0018] Step 2, align the fitting surface of the protective strip and stick it on the bottom foot surface.

[0019] Step 3, spray paint or dip the entire suspended motor base in paint until the paint surface is stable and does not drip.

[0020] Step 4: Rotate the power-assisted wheel to drive the stud and the central piston to rotate, and then manually remove the protective strip.

[0021] Beneficial effects: When the permanent magnet column in step 2 of the present invention is displaced along the axial direction to the limit contact with the bottom wall of the hydraulic chamber, the hydraulic oil in the hydraulic chamber is squeezed into the hydraulic ring groove through the a liquid guide channel, making the cross-section of any position of the annular rubber belt slightly convex in an arc shape, as shown by the mark b in the figure, so that the annular rubber belt with slightly convex at any position is sealed and fitted to the contour edge of the bottom sole surface, eliminating the fitting gap at any local position; therefore, the paint liquid during the painting process cannot penetrate into the bottom sole surface, thus ensuring the problem of paint pollution on the bottom sole surface during the painting process; in step 4, the hydraulic oil in the hydraulic oil reserve chamber is successively squeezed into the hydraulic ring groove through the b liquid guide channel, the hydraulic chamber and the a liquid guide channel, making the cross-section of any position of the annular rubber belt further significantly convex on the basis of being slightly convex in an arc shape, as shown by the mark c in the figure. The annular rubber belt with more significantly convex makes the fitting surface of the protective strip further separated from the bottom sole surface, thereby increasing the distance between the permanent magnet column and the bottom sole surface, and then significantly reducing the magnetic attraction between the permanent magnet column and the bottom sole surface at this time. After the magnetic attraction between the permanent magnet column and the bottom sole surface is reduced, it is convenient to manually remove the protective strip. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the first embodiment;

[0023] Figure 2 It is a schematic structural diagram of the second embodiment;

[0024] Figure 3 It is a schematic diagram at the start of "Step 2" of the second embodiment;

[0025] Figure 4 It is a schematic diagram of two perspectives of the protective strip of the second embodiment;

[0026] Figure 5 It is a sectional view of the protective strip of the second embodiment. Detailed Embodiment

[0027] The present invention will be further described in detail below with reference to the drawings.

[0028] As shown in the attached Figures 1 to 5The protective device for the bottom sole surface of the paint process on the surface of the motor base. The lower side of the motor base 2 is fixedly connected to the motor foot 4 through the support legs 3. The material of the motor foot 4 is iron or steel. In this case, there are two support legs 3 in total. The machined surface at the lower end of the motor foot 4 is at least two parallel rectangular bottom sole surfaces 6. When installing the motor, since the bottom sole surface 6 of the motor base needs to be flat and fit the motor installation platform, it can ensure stable and reliable grounding performance and avoid shaking at the same time. During the process of overall suspension painting or overall dipping of the motor base, the bottom sole surface 6 of the motor base will be contaminated with paint or other sundries due to paint contamination. As a result, the contact surface between the bottom sole surface of the subsequent motor base and the motor installation platform may have poor contact due to the paint coating, resulting in unstable grounding. At the same time, the unevenness of the paint will form non-surface contact at the contact surface and cause the problem of easy shaking. Therefore, this solution proposes a technical solution of a protective strip 7 that can adhere to the bottom sole surface 6, specifically with the following two embodiments:

[0029] Embodiment 1, as Figure 1 shown:

[0030] Each protective strip 7 corresponds to at least two independent permanent magnets 9 with high magnetic strength. As shown in the following figure of Figure 1 , in the protective state, the protective strip 7 adheres to the bottom sole surface 6 along the length direction, and the two independent permanent magnets 9 are on the side away from the bottom sole surface 6 at both ends of the protective strip 7. The two independent permanent magnets 9 form a thrust on the protective strip 7 under the magnetic attraction of the bottom sole surface 6, so that the protective strip 7 adheres to the bottom sole surface 6 along the length direction. Although this structure is simple, any local part of the joint surface where the protective strip 7 adheres to the bottom sole surface 6 along the length direction is likely to form a gap. As a result, during the paint construction process, the paint can seep in along the gap at any local position between the protective strip 7 and the adhered bottom sole surface 6, and the bottom sole surface 6 still cannot avoid the problem of paint pollution. If two independent permanent magnets 9 with higher magnetic strength are used and a sealing ring structure is added, although the problem of the joint gap can be solved to a certain extent, after the paint coating process is completed, if you want to remove the protective strip 7, it is difficult to smoothly remove the protective strip 7 because the two independent permanent magnets 9 with higher magnetic strength and the bottom sole surface 6 are firmly attracted to each other under the strong magnetic force constraint.

[0031] Embodiment 2, as Figures 2 to 5 shown:

[0032] In terms of materials, in order to avoid magnetic shielding, the protective strip 7 is made of non-magnetic materials, such as engineering plastics, aluminum, etc.

[0033] As Figure 4 and 5As shown, a circular rubber band 19 is provided along the contour edge of the fitting surface 7a of the protective strip 7. A circular hydraulic ring groove 23 is provided along the path of the circular rubber band 19 on the fitting surface 7a of the protective strip 7. The circular rubber band 19 seals the hydraulic ring groove 23 along the path. The inner and outer contour edges of the circular rubber band 19 are hermetically fixed and bonded to the fitting surface 7a of the protective strip 7 through an epoxy resin adhesive. At both ends of the side of the protective strip 7 away from the fitting surface 7a, a plunger cylinder 11 is integrally and vertically provided. A permanent magnet column 27 is coaxially arranged inside the plunger cylinder 11. A circular piston 30 is coaxially fixed to the waist of the permanent magnet column 27. The upper and lower spaces in the plunger cylinder 11 separated by the circular piston 30 are respectively a cavity 32 and a hydraulic chamber 26. The hydraulic chamber 26 communicates with the hydraulic ring groove 23 through a liquid guiding channel 24a inside the protective strip 7.

[0034] The upper end of the plunger cylinder 11 is hermetically provided with an elastic pressure adaptation diaphragm 31. The elastic pressure adaptation diaphragm 31 serves the purpose of hermetically protecting the paint, so that the cavity 32 is airtight. The pressure change in the cavity 32 will cause the elastic deformation of the elastic pressure adaptation diaphragm 31 adaptively. Thus, when the circular piston 30 moves up and down, the air pressure in the cavity 32 is always stable within a certain range. Therefore, the up and down displacement of the circular piston 30 will not be interfered by the pressure in the cavity 32.

[0035] A retaining ring 21 is integrally provided on the inner wall of the upper end of the plunger cylinder 11. A first spring 22 is coaxially arranged between the circular piston 30 and the retaining ring 21. A second spring 28 is coaxially arranged between the circular piston 30 and the hydraulic chamber bottom wall 25 of the hydraulic chamber 26. Both the first spring 22 and the second spring 28 are non-magnetic springs, specifically made of copper alloy or aluminum alloy. In the middle of the side of the protective strip 7 away from the fitting surface 7a, a central plunger cylinder 16 is integrally and vertically provided. A central piston 15 is coaxially arranged inside the central plunger cylinder 16. The lower side of the central piston 15 is a hydraulic oil reserve chamber 16. The hydraulic oil reserve chamber 16 communicates with the hydraulic chamber 26 through a liquid guiding channel 24b inside the protective strip 7. A circular internal threaded body 14 is integrally provided on the inner wall of the upper end of the central plunger cylinder 16. A stud 12 is threadedly engaged with the inside of the circular internal threaded body 14. The lower end of the stud 12 is coaxially and synchronously fixed to the central piston 15. The upper end of the stud 12 is synchronously connected to an assisting rotating wheel 13. In the initial state, the upper end of the central piston 15 is in limit contact with the circular internal threaded body 14.

[0036] In the initial state, the integrated structure formed by the permanent magnet column 27 and the circular piston 30 is stably in a determined position under the common restraint of the first spring 22 and the second spring 28, and the circular rubber band 19 is in a planar shape, as shown in Figure 5 mark a;

[0037] When the permanent magnet column 27 is displaced along the axial direction to contact the bottom wall 25 of the hydraulic chamber in a limited manner, the hydraulic oil in the hydraulic chamber 26 is squeezed into the hydraulic annular groove 23 through the a liquid guiding channel 24, causing the cross-section at any position of the annular rubber belt 19 to be slightly convex in an arc shape, as Figure 5 the mark b in

[0038] On the basis that the permanent magnet column 27 is displaced along the axial direction to contact the bottom wall 25 of the hydraulic chamber in a limited manner, the central piston 15 is displaced along the axial direction, causing the hydraulic oil in the hydraulic oil reserve chamber 16 to be successively squeezed into the hydraulic annular groove 23 through the b liquid guiding channel 24, the hydraulic chamber 26, and the a liquid guiding channel 24, causing the cross-section at any position of the annular rubber belt 19 to be further significantly convex on the basis of being slightly convex in an arc shape, as Figure 5 the mark c in

[0039] Working method of the second embodiment:

[0040] Step 1, the suspension device 1 suspends the unpainted motor base 2 in the air, exposing the bottom foot surface 6 of the motor base 2;

[0041] Step 2, align and attach the fitting surface 7a of the protective strip 7 in the initial state to the bottom foot surface 6. At this time, a strong magnetic suction force is formed between the permanent magnet columns 27 at both ends of the protective strip 7 and the bottom foot surface 6 of the motor base 2. The magnetic suction force between the permanent magnet columns 27 at both ends of the protective strip 7 and the bottom foot surface 6 of the motor base 2 will first cause the fitting surface 7a of the protective strip 7 to closely adhere to the bottom foot surface 6. At the same time, the permanent magnet column 27 will move gradually closer to the bottom foot surface 6 along the axial direction under the action of the magnetic suction force, overcoming the initial binding forces of the first spring 22 and the second spring 28 until the permanent magnet column 27 is displaced along the axial direction to contact the bottom wall 25 of the hydraulic chamber in a limited manner. At this time, the distance between the permanent magnet column 27 and the bottom foot surface 6 is minimized, the magnetic suction force of the permanent magnet column 27 is the largest, and the fitting surface 7a of the protective strip 7 adheres to the bottom foot surface 6 in the tightest state; at the same time, when the permanent magnet column 27 is displaced along the axial direction to contact the bottom wall 25 of the hydraulic chamber in a limited manner, the hydraulic oil in the hydraulic chamber 26 is squeezed into the hydraulic annular groove 23 through the a liquid guiding channel 24, causing the cross-section at any position of the annular rubber belt 19 to be slightly convex in an arc shape, as Figure 5 shown by the mark b in

[0042] making the annular rubber belt 19 that is slightly convex at any position seal and fit the contour edge of the bottom foot surface 6, eliminating the fitting gap at any local position;

[0043] Step 4: At this time, due to the strong magnetic force of the permanent magnet column 27, the protective strip 7 cannot be directly removed by hand. At this time, by rotating the assisting wheel 13, the stud 12 and the central piston 15 are driven to rotate. Under the drive of the thread fit, the central piston 15 displaces along the axial direction, so that the hydraulic oil in the hydraulic oil reserve chamber 16 is successively squeezed into the hydraulic ring groove 23 through the b liquid guide channel 24, the hydraulic chamber 26 and the a liquid guide channel 24, so that the cross-section at any position of the annular rubber band 19 further significantly protrudes outward in an arc shape on the basis of slightly protruding outward in an arc shape, as Figure 5 marked as c in. The more significantly protruding annular rubber band 19 separates the fitting surface 7a of the protective strip 7 from the bottom foot surface 6 further, thereby increasing the distance between the permanent magnet column 27 and the bottom foot surface 6, and then significantly reducing the magnetic suction force between the permanent magnet column 27 and the bottom foot surface 6 at this time. After the magnetic suction force between the permanent magnet column 27 and the bottom foot surface 6 is reduced, the protective strip 7 can be removed by hand and cleaned.

[0044] In both Embodiment 1 and Embodiment 2, adjacent protective strips 7 can be fixedly connected through a plurality of connecting arms 8.

[0045] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A foot sole protection device for a motor base surface paint process, wherein the lower side of the motor base (2) is fixedly connected to a motor foot (4) via a support leg (3), and the processed surface of the lower end of the motor foot (4) is at least two parallel rectangular foot sole palm surfaces (6); characterized in that: It also comprises a protection strip (7) which can be attached to the sole of the foot (6).

2. The motor base surface paint process bottom foot protection device according to claim 1, characterized in that: Each protection strip (7) corresponds to at least two independent permanent magnets (9). In the protection state, the protection strip (7) is attached to the sole of the foot (6) along the length direction, and the two independent permanent magnets (9) are located at both ends of the protection strip (7) on the side away from the sole of the foot (6). The two independent permanent magnets (9) form a thrust on the protection strip (7) under the magnetic attraction of the sole of the foot (6), so that the protection strip (7) is attached to the sole of the foot (6) along the length direction.

3. The motor base surface paint process bottom foot protection device according to claim 2, characterized in that: In order to avoid magnetic shielding, the protection strip (7) is made of non-magnetic material, such as engineering plastics, aluminum, etc.

4. The motor base surface paint process bottom foot protection device according to claim 1, characterized in that: Two adjacent protection strips (7) are fixedly connected via a plurality of connecting arms (8).

5. The motor base surface paint process bottom foot protection device according to claim 1, characterized in that: The fitting surface (7a) of the protection strip (7) is provided with a circle of annular rubber belt (19) along the contour edge, the fitting surface (7a) of the protection strip (7) is provided with a circle of hydraulic ring groove (23) along the path of the annular rubber belt (19), the annular rubber belt (19) seals the hydraulic ring groove (23) along the path, and the inner and outer contour edges of the annular rubber belt (19) are both sealed and fixedly bonded to the fitting surface (7a) of the protection strip (7) by epoxy resin adhesive; Both ends of the side of the protection strip (7) away from the fitting surface (7a) are integrally and vertically provided with a plunger cylinder (11), a permanent magnetic column (27) is coaxially provided in the plunger cylinder (11), and an annular piston (30) is coaxially fixedly provided at the waist of the permanent magnetic column (27); the upper and lower spaces separated by the annular piston (30) in the plunger cylinder (11) are respectively a cavity (32) and a hydraulic chamber (26), and the hydraulic chamber (26) is connected to the hydraulic annular groove (23) through a liquid guide channel (24) in the protection strip (7).

6. The motor base surface paint process bottom foot protection device according to claim 5, characterized in that: The upper end of the plunger cylinder (11) is sealed with an elastic pressure adaptable diaphragm (31), so that the cavity (32) is sealed, and the pressure change in the cavity (32) causes the elastic pressure adaptable diaphragm (31) to elastically deform adaptively.

7. The motor base surface paint process bottom foot protection device according to claim 6, characterized in that: A retaining ring (21) is integrally provided on the inner wall of the upper end of the plunger cylinder (11), a first spring (22) is coaxially provided between the annular piston (30) and the retaining ring (21), and a second spring (28) is coaxially provided between the annular piston (30) and the hydraulic chamber bottom wall (25) of the hydraulic chamber (26); In the initial state, the integrated structure formed by the permanent magnetic column (27) and the annular piston (30) is stabilized at a certain position under the joint constraints of the first spring (22) and the second spring (28), and the annular rubber belt (19) is in a plane shape.

8. The motor base surface paint process bottom foot protection device according to claim 7, characterized in that: A central plunger cylinder (16) is vertically and integrally arranged in the middle of the side of the protection strip (7) away from the fitting surface (7a); a central piston (15) is coaxially arranged in the central plunger cylinder (16); a hydraulic oil reserve chamber (16) is provided on the lower side of the central piston (15); the hydraulic oil reserve chamber (16) is connected to the hydraulic chamber (26) through a liquid guide channel b (24) in the protection strip (7); an annular internal threaded body (14) is integrally arranged on the inner wall of the upper end of the central plunger cylinder (16); a stud (12) is threadedly matched on the inner side of the annular internal threaded body (14); the lower end of the stud (12) coaxially and synchronously fixes the central piston (15); the upper end of the stud (12) is synchronously connected to a power-assisted rotating wheel (13); in an initial state, the upper end of the central piston (15) contacts the annular internal threaded body (14) in a limiting manner.

9. The motor base surface paint process bottom foot protection device according to claim 7, characterized in that: When the permanent magnetic column (27) moves along the axial direction to a limit position and contacts the bottom wall (25) of the hydraulic chamber, the hydraulic oil in the hydraulic chamber (26) is squeezed into the hydraulic ring groove (23) through the a-liquid guide channel (24), so that the cross section of the annular rubber belt (19) at any position is convex in an arc shape; On the basis that the permanent magnetic column (27) is displaced along the axial direction until it contacts the bottom wall (25) of the hydraulic chamber in a limited position, the central piston (15) is displaced along the axial direction, so that the hydraulic oil in the hydraulic oil reserve chamber (16) is squeezed into the hydraulic ring groove (23) through the b liquid guide channel (24), the hydraulic chamber (26) and the a liquid guide channel (24) in sequence, so that the cross section of the annular rubber belt (19) at any position is further significantly convex on the basis of being convex in an arc shape.

10. The bottom sole protection device of the motor base surface painting process according to claim 9 is characterized in that: Working method of the second embodiment: Step 1, exposing the sole surface (6) of the motor base (2); Step 2: the fitting surface (7a) of the protection strip (7) is aligned and fitted on the sole surface (6); Step 3, spraying or dipping the motor base (2) in the suspended state as a whole until the paint surface is stable and does not drip; Step 4: Rotate the power-assisted rotating wheel (13) to drive the stud (12) and the central piston (15) to rotate, and then manually remove the protective strip (7).

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