Coaxial suspension clamp body in lens continuous production

Abstract

The utility model discloses a coaxial suspension clamp body in continuous production of lenses, which comprises clamping rods hinged with each other and a pressing rod arranged at the hinged part of the clamping rods, and contact plates which abut against the side edges of the lenses at intervals are arranged at the end parts of the clamping rods and the pressing rod. The end face, making contact with the lens, of each contact plate is provided with a clamping structure for driving the hinge position of the lens and the clamping rod to be coaxial and parallel, the clamping structure is an arc-shaped groove formed in the outer end face of the contact plate, and a telescopic rod extending into the arc-shaped groove is further arranged in the center of the contact plate in a penetrating mode. And a positioning plate which is in flat contact with the side edge of the lens is vertically arranged at the end part of the telescopic rod. The clamping body can drive the lens to be coaxially parallel to the hinge shaft of the clamping rod after being clamped, so that when the lens is hung through the clamping body and then is machined, the position precision of the lens can be guaranteed based on the hinge shaft, meanwhile, during machining, the consistency of the thickness of a coating on the surface of the lens can be guaranteed, especially in the processes of base coating, surface coating and film coating, and the machining quality of the lens is improved.

Description

Technical Field

[0001] The present application relates to the technical field of clamping in the process of lens production, and in particular to a coaxial suspension clamp in the continuous production of lenses. Background Art

[0002] The processing of eyeglass lenses is a complex and delicate sequence involving multiple steps to ensure the quality and performance of the final product, including cleaning: the purpose is to remove dirt, grease and impurities on the lens surface; drying: to remove surface moisture; primer: to enhance the adhesion and scratch resistance of the lens, and provide a better foundation for subsequent coating; re-drying: to ensure that the primer is firmly attached to the lens surface; top coating: to increase the wear resistance, anti-reflection, UV protection of the lens, etc., to improve the optical performance and comfort of the lens; re-drying: to ensure that the coating is uniform and firm; quality inspection: to ensure that the lens meets quality standards in terms of size, shape, surface quality, coating uniformity, etc.; high temperature curing: to cure the organic components in the coating through chemical reactions to enhance the stability and durability of the coating; coating: to coat the surface of the lens with one or more layers of metal or non-metallic materials to further increase the wear resistance, anti-reflection and UV protection of the lens, while also improving the appearance of the lens.

[0003] At present, in many processes of eyeglass lenses, the process is performed on the surfaces of both sides of the eyeglass lenses. In order to avoid being blocked or interfered during the processing of the lens surface, a method as shown in the attached manual is usually used. Figure 1 The clamp shown clamps the side of the lens so that both sides of the lens can be completely exposed. At the same time, the lens can be transferred between various processes through the clamp, which improves the processing efficiency. However, when the lens to be processed is manually clamped on the clamp, due to human factors, there will be an angle deviation between the lens and the clamp. In the subsequent processing, especially in the primer, topcoat and coating processes, the deviation of the lens will cause the coating thickness on its surface to be uneven (inconsistent), which will affect the use effect of the lens and cause a greater impact on the user. Summary of the invention

[0004] In response to the above-mentioned problems, the present application aims to provide a coaxial suspension clamp for continuous production of lenses, which realizes coaxial clamping of the lenses, and thus during processing, can ensure the consistency of the thickness of the lens surface coating, especially in the primer, topcoat and coating processes, thereby improving the lens processing quality.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a coaxial suspension clamp body for continuous production of lenses, the suspension clamp body comprising clamp rods hinged to each other, and a pressure rod arranged at the hinge of the clamp rods, and contact plates are arranged at the ends of the clamp rods and the pressure rods, which are spaced apart from each other and abut against the side edges of the lenses, characterized in that a clamping structure is arranged on the end face of each contact plate in contact with the lens to drive the lens and the hinge of the clamp rod to be coaxial and parallel.

[0006] Preferably, the clamping structure is an arc-shaped groove opened on the outer end surface of the contact plate.

[0007] Preferably, a telescopic rod extending into the arc-shaped groove is provided in the center of the contact plate, and a positioning plate in flat contact with the side edge of the lens is vertically provided at the end of the telescopic rod.

[0008] Preferably, a protective cover which can be extended and retracted along with the telescopic rod is also provided on the telescopic rod.

[0009] The beneficial effects of the present application are as follows: a clamping structure is provided on the end face of each contact plate of the clamping body that contacts the lens, which drives the hinge of the lens and the clamping rod to be coaxial and parallel, and the structure can drive the lens to be coaxial and parallel with the hinge axis of the clamping rod after clamping, and then when the lens is suspended by the clamping body for processing, the position accuracy of the lens can be guaranteed based on the hinge axis, and at the same time, during processing, the consistency of the thickness of the lens surface coating can be guaranteed, especially in the primer, topcoat and coating processes, thereby improving the lens processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the current lens clip structure.

[0011] Figure 2 for Figure 1 Illustration of the clamping body ready to clamp the lens.

[0012] Figure 3 for Figure 2 The figure shows the lens after clamping.

[0013] Figure 4 This is a diagram of the contact structure between the contact plate and the lens of this application.

[0014] Figure 5 for Figure 4 After clamping, there will still be axial deflection as shown in the figure.

[0015] Figure 6 This is a diagram showing the axial displacement of the lens when the arc groove is set as a square groove structure in the present application.

[0016] Figure 7 This is a diagram of the telescopic rod and positioning plate structure provided for this application.

[0017] Figure 8In this application, the contact plate is driven by the clamping rod and drives the positioning plate to be flush with the side surface of the lens as shown in the figure.

[0018] Fig. 9 For this application Figure 8 The middle lens is shown in the figure after being squeezed by the positioning plate and contacting the arc groove.

[0019] Fig.10 This is a diagram showing a protective cover being provided on the telescopic rod of the present application.

[0020] In the figure: 5- Lens. DETAILED DESCRIPTION

[0021] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Refer to the attached Figures 1 to 10 The coaxial suspension clamp for continuous lens production shown in the figure comprises a clamping rod 1 hinged to each other, and a pressure rod 2 arranged at the hinge of the clamping rod 1, and contact plates 3 are arranged at the ends of the clamping rod 1 and the pressure rod 2 to abut against the side of the lens at a certain distance. Figure 2 As shown, the symmetrically hinged clamping rod 1 is driven to open in the direction of the arrow, and the pressure rod 2 is driven to open in the direction of the arrow at the same time, and then the lens is put in. A torsion spring (not shown in the figure) is usually provided at the hinge of the clamping rod 1. Under the action of the torsion spring, the contact plates 3 at the bottom ends of the clamping rods 1 on both sides are offset from the side circumference of the lens. At the same time, the pressure rod 2 is reset (the pressure rod 2 is usually a thin spring plate structure with elastic clamping effect), and the contact plate 3 thereon is on the top side of the contact plate 3 at the bottom of the lens on the clamping rod 1, and the lens is quickly clamped and positioned through three-point contact.

[0023] In order to solve the current axial deviation of the lens after clamping (based on the hinge axis of the symmetrical clamping rod 1), the present application provides a clamping structure on the end face of each contact plate 3 that contacts the lens, which drives the lens and the hinge of the clamping rod 1 to be coaxial and parallel. The structure can drive the lens to be coaxial and parallel to the hinge axis of the clamping rod 1 (not shown in the figure) after clamping, and then when the lens is hung by the clamping body for processing (a hanging hook extends from the upper end of one side of the clamping rod 1, which is hung on the hanging rod during the processing process to ensure the vertical stability of the entire clamping body), the position accuracy of the lens can be guaranteed based on the hinge axis.

[0024] Specifically, Figure 4As shown, the clamping structure is an arc groove 3a opened on the outer end surface of the contact plate 3. In the above clamping process, the end of the lens is embedded in the arc groove 3a of the contact plate 3, and the two side corners of the lens are in contact with the arc groove 3a at the same time, which can ensure the linearity of the lens with the contact plate 3 after clamping, and the coaxial parallelism with the clamping body. The arc groove 3a can be adapted to the clamping operation of lenses of different thicknesses, and can limit the axial displacement of the lens, thereby improving the stability of the lens clamping.

[0025] When performing the above lens clamping operation, there will still be Figure 5 The lens shown in FIG. 1 is tilted from the contact plate 3, that is, after the lens is clamped in contact with the arc groove 3a, there is a clamping state in which the corners of the two sides are not in contact with the arc groove 3a at the same time. Figure 6 In the square groove structure shown in the figure, there is a gap between the lens and the square groove, which causes the lens to still have axial offset after clamping ( Figure 6 Therefore, to solve this problem, Figure 7 As shown, a telescopic rod 31 (preferably a spring telescopic rod structure) extending into the arc groove 3a is also provided in the center of the contact plate 3, and a positioning plate 32 is vertically provided at the end of the telescopic rod 31 to contact the side of the lens flatly. Figure 8-9 As shown: the clamp rod 1 approaches the side circumference of the lens under the action of the torsion spring, and makes the (two side) positioning plates 32 contact and flatly fit with the two side circumferences of the lens, so that the linearity of the lens and the contact plate 3 and the coaxial parallelism with the hinge axis can be achieved, and then the lens continues to squeeze the positioning plate 32 under the action of the torsion spring, and drives the telescopic rod 31 to retract, so that the two side corners of the lens contact the arc groove 3a (based on the reference that the side wall of the lens is in flat contact with the positioning plate 32, the lens position can be manually adjusted axially so that its two side corners contact the arc groove 3a together), thereby achieving precise coaxial clamping operation of the lens. In the subsequent multiple processing steps, the quality of the lens surface processing can be guaranteed based on the suspension positioning of the frame.

[0026] The lens processing includes primer coating, top coating and coating operations. In order to avoid the problem that the coating powder or coating liquid adheres to the telescopic rod 31 during processing and affects the retraction later, Fig.10 As shown, the telescopic rod 31 is also provided with a protective cover 4 which can be extended and retracted therewith, and is preferably a rubber bellows, which can shrink along with the telescopic rod 31 and effectively protect the exposed rod body part of the telescopic rod 31 to ensure smooth extension and retraction.

[0027] The principle of the present application is: when clamping the lens, the force of the torsion spring is overcome to drive the clamping rod 1 and the pressure rod 2 to open, and then the lens is put in. The clamping rod 1 approaches the side circumference of the lens under the action of the torsion spring, and makes the positioning plates 32 (on both sides) contact and flatly fit with the side circumferences of the lens, so that the linearity of the lens and the contact plate 3 and the coaxial parallelism with the hinge axis can be achieved. Then, under the action of the torsion spring, the lens is squeezed against the positioning plate 32, and the telescopic rod 31 is driven to retract, so that the two side corners of the lens are in contact with the arc groove 3a, and combined with the contact plate 3 on the pressure rod 2, three-point stable clamping is achieved.

[0028] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A coaxial suspension clamp for continuous production of lenses, the suspension clamp comprising mutually hinged clamping rods (1) and a pressure rod (2) arranged at the hinge of the clamping rod (1), and contact plates (3) are arranged at the ends of the clamping rod (1) and the pressure rod (2) at a distance from each other and against the side edge of the lens, characterized in that: A clamping structure is provided on the end surface of each contact plate (3) that contacts the lens, driving the hinged part of the lens and the clamping rod (1) to be coaxial and parallel.

2. The coaxial suspension clamp according to claim 1, characterized in that: The clamping structure is an arc-shaped groove (3a) provided on the outer end surface of the contact plate (3).

3. The coaxial suspension clamp according to claim 2, characterized in that: A telescopic rod (31) extending into the arc-shaped groove (3a) is also provided at the center of the contact plate (3), and a positioning plate (32) is vertically provided at the end of the telescopic rod (31) and is in flat contact with the side edge of the lens.

4. The coaxial suspension clamp according to claim 3, characterized in that: The telescopic rod (31) is also sleeved with a protective cover (4) which can be telescopic therewith.

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