Similarly elliptical workpiece gluing and curing device and method

Abstract

The invention discloses a gluing and curing device and method for approximately-oval workpieces, and relates to the technical field of precise coating and curing. The main shaft is arranged on the base in a manner of rotating around a central axis, and is used for mounting a non-circular ring-shaped workpiece; the driving mechanism is used for driving the spindle to rotate; the shape of the outer contour of the profiling disc is in proportion to the shape of the to-be-machined contour of the workpiece, and the profiling disc is coaxially fixed to the main shaft and rotates synchronously with the workpiece; each driven mechanism comprises a sliding rail, a sliding block, a driving mechanism and a driving mechanism, and the sliding rail is fixed on the base; the sliding table can do linear reciprocating motion along the sliding rail; the machining head is mounted on the sliding table; and the rolling wheel is rotatably installed on the sliding table and makes rolling contact with the outer contour of the profiling disc, and when the main shaft drives the workpiece and the profiling disc to rotate, the contour of the profiling disc drives the sliding table to do reciprocating motion through the rolling wheel. The non-circular workpiece gluing and curing device is simple and reliable in structure, and high-quality and automatic gluing and curing of non-circular workpieces are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision coating and curing, and in particular to a near-elliptical workpiece gluing and curing device and method. BACKGROUND

[0002] In the field of high-end manufacturing, it is often necessary to bond metal parts with non-metallic materials (such as thermoplastic polyurethane TPU) with high reliability. To achieve this purpose, it is usually necessary to pre-coat one or more layers of special adhesive (such as UV glue) on the bonding surface of the metal part, and then irradiate it with a specific wavelength of ultraviolet light source to make it solidify, forming an intermediate layer that can be well combined with the subsequent material.

[0003] However, when the workpiece to be processed is a non-circular ring-shaped part, such as the waist flange of a precision garment, its shape is usually approximately elliptical, which brings great challenges to the gluing and curing process. In the gluing stage, in order to ensure the uniformity of the glue layer, the workpiece usually needs to be rotated around its center, and the gluing tool is held by hand or by a mechanical hand. In the curing stage, in order to ensure the consistency of the curing effect, the UV light source lamp head and the irradiated glue layer surface need to maintain a constant distance throughout the curing process.

[0004] For traditional circular workpieces, achieving equidistant irradiation only requires fixing the UV lamp head at a certain radius from the center of rotation. However, for elliptical workpieces, the distance from the points on the outline to the center of rotation is constantly changing. If the UV lamp head is fixed, the distance between the lamp head and the workpiece surface will vary during rotation, resulting in uneven irradiation intensity of ultraviolet light. The near-end region may be over-irradiated and aged, while the far-end region may not be fully cured due to insufficient irradiation, severely affecting the bonding quality and product reliability. The existing technology usually uses manual UV lamp head to try to follow the workpiece outline, but this method is inefficient, labor-intensive, and the quality stability cannot be guaranteed.

[0005] In view of the above problems, there is an urgent need for an automated device and process with simpler structure, smoother operation, and higher reliability to solve the problem of maintaining a constant processing distance during the rotation of non-circular ring-shaped workpieces during gluing and curing. SUMMARY

[0006] Therefore, the present application provides a near-elliptical workpiece gluing and curing device and method. The main purpose is to solve the technical problem that it is difficult to maintain a constant distance between the light source and the workpiece surface when using UV curing for non-circular ring-shaped workpieces in the prior art, resulting in poor curing quality.

[0007] According to a first aspect of the present invention, a near-elliptical workpiece coating and curing apparatus is provided, comprising: a base serving as a supporting foundation for the entire apparatus, ensuring the stability and rigidity of the apparatus; a main shaft rotatably mounted on the base about a central axis, the main shaft being used to mount a non-circular annular workpiece to achieve rotational movement of the tooling; a drive mechanism for driving the main shaft to rotate, providing the power required for workpiece rotation; a contouring disk, the outer contour shape of which is proportional to the workpiece's to-be-processed contour shape, and the contouring disk being coaxially fixed on the main shaft and rotating synchronously with the workpiece; and at least one driven mechanism, the driven mechanism comprising: a slide rail fixed on the base; a slide table capable of linear reciprocating along the slide rail; a processing head mounted on the slide table; and a roller rotatably mounted on the slide table and rollingly contacting the outer contour of the contouring disk. The design of the contouring disk in this application enables the driven mechanism to accurately track and process the workpiece shape.

[0008] Furthermore, the processing head is an ultraviolet light source lamp.

[0009] Furthermore, the driven mechanism also includes an elastic element, which applies a force to the slide table to make the roller abut against the outer contour of the copying disk. The design of the elastic element in this application ensures stable contact between the roller and the copying disk, improving the machining accuracy and reliability.

[0010] Furthermore, there are two driven mechanisms, which are symmetrically arranged on both sides of the spindle. This symmetrical layout ensures that the inner and outer cylindrical surfaces of the workpiece are processed simultaneously, thereby improving processing efficiency.

[0011] Furthermore, each of the slides is equipped with two ultraviolet light sources, one for irradiating the inner cylindrical surface of the workpiece and the other for irradiating the outer cylindrical surface of the workpiece, thereby achieving simultaneous ultraviolet curing of the inner and outer cylindrical surfaces of the workpiece and further improving production efficiency.

[0012] Furthermore, the workpiece is elliptical in shape, and the device is particularly suitable for the adhesive curing process of elliptical workpieces, but the shape of the conforming disc can also be adjusted as needed to accommodate other non-circular annular workpieces.

[0013] Furthermore, it also includes a special tooling for fixing the workpiece on the spindle; The end of the spindle and the special tooling are provided with mutually cooperating, non-uniformly distributed positioning holes and positioning pins to ensure that the angle between the workpiece and the copying disk remains consistent. In this application, this design ensures the stability and machining accuracy of the workpiece during rotation.

[0014] According to a second aspect of the present application, a near-elliptical workpiece glue coating and curing method is provided, which is implemented based on the device as described in the above summary, and the method comprises the following steps: S1: coaxially fix a non-circular ring-shaped workpiece and a profiling disc on a main shaft, and ensure that the angular orientations of the two are consistent; S2: apply adhesive to the surface of the workpiece to be processed; S3: start the driving mechanism to synchronously rotate the main shaft, the workpiece and the profiling disc; S4: during the rotation, the outer contour driving roller of the profiling disc drives the sliding table carrying the processing head to make reciprocating linear motion along the sliding rail, so as to keep the distance between the processing head and the surface of the workpiece to be processed substantially constant, thereby completing the curing of the adhesive. The design of applying glue during rotation in the present application improves the uniformity and efficiency of glue application, and avoids the non-uniformity caused by static glue application of the workpiece.

[0015] Further, the step S2 comprises: rotating the workpiece at a first preset rotating speed under the driving of the driving mechanism, and applying adhesive to the surface of the workpiece to be processed.

[0016] Further, the step S4 comprises: rotating the workpiece at a second preset rotating speed for a preset number of revolutions to complete the curing. The design of precisely controlling the curing time and effect by controlling the rotating speed and the number of revolutions improves the stability and consistency of product quality.

[0017] The present application provides a near-elliptical workpiece glue coating and curing device and method. Through modular design (operating rod, connecting chuck, and connecting plate split combination) and T-shaped clamping groove quick docking, three-phase synchronous grounding operation is realized, which can solve the technical problems that the existing grounding wire is mostly single-phase or fixed structure, cannot quickly adapt to three-phase equipment, and the installation steps are complicated, and cannot be quickly disassembled.

[0018] Advantages The present application divides the rotating motion of the main shaft into the rotation of the workpiece and the linear reciprocating motion of the processing head through the cam link mechanism of the "profiling disc-roller-sliding table". This linkage mechanism can automatically and accurately compensate for the radial distance change caused by the non-circular contour of the workpiece, ensuring that the ultraviolet light source and the surface of the workpiece always maintain a constant distance, thereby ensuring the uniformity of the ultraviolet light irradiation intensity and greatly improving the curing quality and consistency of the glue layer. Compared with complex numerical control systems or easily worn inner guide groove structures, the pure mechanical profiling mechanism of the present application is simple in structure, low in manufacturing and maintenance costs, and smooth in operation, and is not easily affected by environmental pollution.

[0019] In addition, the present device liberates the glue coating and curing process from tedious manual operation, realizes automatic and standardized production, significantly improves production efficiency, and reduces the dependence on the skills of operators.

[0020] The process provided by the present application combines manual gluing and automatic curing, which ensures the flexibility of gluing and the quality of curing. The device and process are not only suitable for UV curing, but also can be applied to spraying, polishing, detection and other occasions requiring precise surface treatment of non-circular rotary bodies according to the core equidistant following principle, and have good popularization value.

[0021] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] In the drawings: Figure 1 A structure schematic diagram of a near-elliptical workpiece gluing and curing device provided by an embodiment of the present application is shown; Figure 2 A structure schematic diagram of the curing device in a working state is shown; Figure 3 Another angle (front view) structure schematic diagram of the curing device in a working state is shown; Figure 4 Another angle (top view) structure schematic diagram of the curing device in a working state is shown; Figure 5 A structure schematic diagram of a non-circular ring-shaped workpiece provided by an embodiment of the present application is shown; Figure 6 An assembly structure schematic diagram of a non-circular ring-shaped workpiece and a special tool provided by an embodiment of the present application is shown; Figure 7 A flowchart of a near-elliptical workpiece gluing and curing method provided by an embodiment of the present application is shown.

[0024] LIST OF ELEMENTS IN THE DRAWINGS 1, base; 2, rotating mechanism; 21, main shaft; 22, motor; 3, profiling disc; 4, workpiece; 5, driven mechanism; 51, slide rail; 52, slide table; 53, processing head; 54, roller.

[0025] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0027] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As shown in Embodiment 1, Figures 1-5 The present application provides a near-elliptical workpiece gluing and curing device. The device mainly comprises a base 1, a rotating mechanism 2 driven by a motor, a profiling disc 3 rotating synchronously with the workpiece 4, and two symmetrically arranged driven mechanisms 5.

[0030] In a feasible embodiment, the rotating mechanism 2 comprises a vertically arranged main shaft 21, the lower end of the main shaft 21 being connected with a speed-adjustable driving device (i.e. a motor 22). The upper end of the main shaft 21 is used to mount the workpiece 4. In this embodiment, the workpiece 4 is fixed by a special tool (as shown in Figure 6 The tool 4 is then mounted on the main shaft 21.

[0031] In the present embodiment, one of the core components of the present application is the profiling disc 3. The profiling disc 3 is a flat plate cam, and its outer contour curve is accurately made in a certain proportion with the inner and outer contours of the work wheel profile to be machined of the workpiece 4, and is approximately elliptical in shape. The profiling disc 3 is coaxially and firmly fixed on the main shaft 21, and rotates synchronously with the workpiece 4. The profiling disc 3 is located below the workpiece 4, and ensures that its major and minor axis directions are strictly consistent with those of the workpiece 4. This can be achieved by providing non-uniformly distributed special tooling (such as positioning pins and positioning holes) on the end face of the main shaft 21 and the workpiece 4.

[0032] In a feasible embodiment, another core of the present application is two driven mechanisms 5 symmetrically arranged on both sides of the main shaft 21. Each of the driven mechanisms 5 comprises: a straight slide rail 51 fixed on the base 1; a slide table 52 capable of performing linear reciprocating motion on the slide rail 51; one or more machining heads 53 mounted on the slide table 52, the machining heads 53 being ultraviolet light sources in the present embodiment. In the present embodiment, two UV lamps can be mounted on each of the slide tables 52, one inwardly for irradiating the inner cylindrical surface of the workpiece 4, and the other outwardly for irradiating the outer cylindrical surface of the workpiece 4; a roller 54 capable of freely rotating about its own axis, the roller 54 being rotatably mounted on the slide table 52 near the profiling disc 3, and being in rolling contact with the outer contour of the profiling disc 3.

[0033] In the present embodiment, the driven mechanism 5 further comprises: an elastic member (not shown in detail in the figure), such as a tension spring, one end of the elastic member being connected to the slide table 52, and the other end being connected to the base 1, always giving the slide table 52 a pulling force towards the profiling disc 3, so as to ensure that the roller 54 is always in close rolling contact with the outer contour of the profiling disc 3.

[0034] In a feasible embodiment, as shown in Figure 7 Fig. 2, the present application also discloses a method for coating and curing a near-elliptical workpiece, which is based on the device of the above-mentioned embodiment 1, and the method flow is as follows: S1: clamping. The non-circular ring-shaped workpiece 4 and the profiling disc 3 are coaxially fixed on the main shaft 21, and the angular orientations of the two are consistent, specifically, the waist flange of the workpiece 4 is fixed on the special tooling (such as Figure 6 ) through screws, and then the tooling 4 assembly with the waist flange is installed on the main shaft 21 of the curing device, and the angular orientations of the tooling 4 assembly and the profiling disc 3 are ensured to be consistent through the positioning pins.

[0035] S2: Gluing, the adhesive is applied on the waist flange surface of the workpiece 4 to be processed, the motor 22 is started, and a lower first preset rotating speed suitable for manual gluing is set. When the main shaft 21 drives the waist flange of the workpiece 4 to rotate slowly, the operator can conveniently and uniformly apply a layer of UV adhesive on the continuous inner and outer cylindrical surfaces of the waist flange of the workpiece 4 by holding the gluing tool.

[0036] S3: Curing. After gluing is completed, the second preset rotating speed and the total number of rotations suitable for curing of the motor 22 are adjusted and set. The motor 22 is started, and the main shaft 21, the tool 4, the waist flange of the tool 4 and the profiling disc 3 start to rotate synchronously.

[0037] S4: During rotation, since the waist flange of the tool 4 and the profiling disc 3 are approximately elliptical, the outer contour of the profiling disc 3 will constantly push or release the roller 54. For example, when the major axis of the profiling disc 3 rotates to the position of the roller 54, it will push the roller 54 and the sliding table 52 to the position farthest from the center; when the minor axis rotates to the position of the roller 54, the sliding table 52 will move to the position closest to the center under the pulling force of the spring. Thus, the sliding table 52 makes an accurate reciprocating linear motion on the sliding rail 51 corresponding to the contour of the profiling disc 3.

[0038] In the embodiment, since the UV lamp is fixed on the sliding table 52, the reciprocating motion of the sliding table 52 perfectly compensates for the change in radial distance caused by the non-circular contour of the waist flange of the workpiece 4. The final effect is that whether the inner UV lamp or the outer UV lamp, the distance between them and the corresponding rotating waist flange inner or outer adhesive surface remains basically constant during the entire 360-degree rotation. When the rotation reaches the preset number of revolutions, the motor 22 is automatically stopped, and the entire curing process is completed.

[0039] By using the above curing device and curing method, the equal distance irradiation problem in the rotation curing process of the near-elliptical workpiece is solved by ingeniously using a pure mechanical linkage, and high-quality automated production is realized.

[0040] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above-mentioned technical content with equivalent embodiments within the scope of the technical solutions of the present application. The embodiments in the above-mentioned embodiments can be further combined or replaced, as long as they do not deviate from the technical solutions of the present application. Any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A device for coating and curing adhesive on a near-elliptical workpiece, characterized in that, The device comprises: a base (1); a main shaft (21) rotatably arranged on the base (1), the main shaft (21) being used for mounting a non-circular ring-shaped workpiece (4); a driving mechanism for driving the main shaft (21) to rotate; a profiling disc (3), the outer contour shape of the profiling disc (3) being proportional to the contour shape to be machined of the workpiece (4), and the profiling disc (3) being coaxially fixed on the main shaft (21) and rotating synchronously with the workpiece (4); and at least one driven mechanism (5), the driven mechanism (5) comprising: a slide rail (51) fixed on the base (1); a slide table (52) capable of linear reciprocating movement along the slide rail (51); a machining head (53) mounted on the slide table (52); and a roller (54) rotatably mounted on the slide table (52) and in rolling contact with the outer contour of the profiling disc (3).

2. The apparatus of claim 1, wherein: The machining head (53) is an ultraviolet light source lamp.

3. The apparatus of claim 1 or 2, wherein: The driven mechanism (5) further comprises an elastic member for applying a force to the slide table (52) to make the roller (54) adhere to the outer contour of the profiling disc (3).

4. The apparatus of claim 1, wherein: The number of the driven mechanisms (5) is two, and the two driven mechanisms (5) are symmetrically arranged on both sides of the main shaft (21).

5. The apparatus of claim 4, wherein: Two ultraviolet light source lamps are mounted on each slide table (52), one of which is used to irradiate the inner cylindrical surface of the workpiece (4), and the other is used to irradiate the outer cylindrical surface of the workpiece (4).

6. The apparatus of claim 1, wherein: The appearance of the workpiece (4) is oval.

7. The apparatus of claim 1, wherein: A special tool for fixing the workpiece (4) on the main shaft is further included; The end of the main shaft (21) and the special tool are provided with non-uniformly distributed positioning holes and positioning pins that match each other, so as to ensure that the angle direction between the workpiece (4) and the profiling disc (3) is consistent.

8. A method of coating and curing a near-elliptical workpiece, comprising: The method is realized based on the device as claimed in any one of claims 1 to 7, and comprises the following steps: S1: coaxially fixing a non-circular ring-shaped workpiece (4) and a profiling disc (3) on a main shaft (21) and ensuring that the angle directions of the two are consistent; S2: applying adhesive to the surface to be machined of the workpiece (4); S3: starting the driving mechanism to make the main shaft (21), the workpiece (4) and the profiling disc (3) rotate synchronously; S4: during rotation, the outer contour of the profiling disc (3) drives the roller (54), which in turn drives the slide table (52) carrying the machining head (53) to reciprocate linearly along the slide rail (51).

9. The method of claim 8, wherein: The step S2 comprises: rotating the workpiece (4) at a first preset rotating speed under the driving of the driving mechanism, while applying adhesive to the surface to be machined of the workpiece (4).

10. The method of claim 9, wherein: The step S4 comprises: rotating the workpiece (4) at a second preset rotating speed for a preset number of revolutions to complete the curing.

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