Combined pressure head for lens grinding

Abstract

The utility model relates to the field of lens manufacturing, in particular to a combined pressure head for lens grinding. According to the scheme, the connecting end of the lens clamp is detachably connected and matched with the pressure head through the threads, when the threaded sleeve is connected to the pressure head, the end face of the connecting end can tightly abut against the pressure head, and therefore stable connection between the clamp and the pressure head is ensured. By means of the connection mode, operation steps are simplified, the requirement for the technical level of operators is lowered, the positioning precision between the clamp and the pressure head is greatly improved, and the problem that due to improper manual operation or equipment precision limitation, the position of the clamp and the position of the pressure head deviate is effectively solved. And secondly, the clamping end is provided with the groove which is clamped and matched with the lens, so that the lens can be tightly and stably fixed, and the lens is prevented from sliding or falling off in the processing process. Therefore, the stability and safety of lens processing are guaranteed, and the processing quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of lens manufacturing, in particular to a combined pressure head used for lens grinding processing. Background Art

[0002] In the existing lens grinding technology, a device that uses a pressure head to pressurize and grind the lens is generally used. The working principle of this type of equipment is to use the pressure head to apply pressure to the lens placed on the fixture so that it fits tightly to the surface of the grinding tool, thereby completing the grinding operation. Among them, a certain distance is maintained between the pressure head and the lens, and the operator needs to position the fixture directly under the pressure head through precise operation.

[0003] However, in actual applications, it is often difficult to ensure the precise alignment of the fixture and the pressure head due to differences in the technical level of operators, the accuracy limitations of the equipment itself, and the influence of environmental factors. When there is a position deviation between the fixture and the pressure head, the lens will be subjected to uneven pressure during the polishing process. This problem is particularly evident in the processing of small-sized and thin lenses. Since the structure of such lenses is relatively fragile and more sensitive to uneven forces, it is more likely to lead to reduced processing quality and even cause lens breakage. This not only affects the product qualification rate, but also increases production costs and time costs. Summary of the invention

[0004] In order to solve the above problems, the utility model discloses a combined pressure head for lens grinding.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions: a combined pressure head for lens grinding, comprising a lens clamp for connecting to the pressure head, the lens clamp comprising a connecting end and a clamping end, the clamping end having a groove for engaging with the lens, a threaded sleeve rotatably sleeved on the outer side of the connecting end, the connecting end being detachably connected with the pressure head through a thread;

[0006] When the threaded sleeve is connected to the pressure head, the end surface of the connecting end can abut against the pressure head.

[0007] Furthermore, an anti-rotation mechanism is further provided between the pressure head and the lens fixture, and the anti-rotation mechanism is used to prevent the pressure head and the lens fixture from rotating substantially.

[0008] Specifically, the anti-rotation mechanism includes a polygonal limiting column arranged on the pressure head, and a polygonal limiting hole opened on the end surface of the connecting end, and the polygonal limiting hole is used for detachable insertion cooperation with the polygonal limiting column.

[0009] In the above solution, the polygonal limiting column is in the shape of a hexagonal column, and the polygonal limiting hole is a hexagonal hole that matches the polygonal limiting column in the shape of a hexagonal column.

[0010] In addition, a buffer layer is arranged on the inner side of the groove, and the buffer layer is used for contacting and cooperating with the lens.

[0011] An inserting hole is provided on the outer side of the clamping end, the inserting hole passes through the groove and is arranged close to the bottom surface of the groove.

[0012] In the scheme of the embodiment of the utility model, the connecting end of the lens clamp is detachably connected to the pressure head through a thread. When the threaded sleeve is connected to the pressure head, the end face of the connecting end can be tightly against the pressure head, thereby ensuring a stable connection between the clamp and the pressure head. This connection method not only simplifies the operation steps and reduces the requirements for the technical level of the operator, but also greatly improves the positioning accuracy between the clamp and the pressure head, and effectively avoids the problem of position deviation between the clamp and the pressure head caused by improper human operation or equipment accuracy limitation. Secondly, the clamping end has a groove that fits into the lens, which can tightly and stably fix the lens to prevent the lens from sliding or falling off during the processing. This not only ensures the stability and safety of lens processing, but also helps to improve processing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a combined pressure head used for lens grinding in an embodiment of the present application;

[0014] Figure 2 A three-dimensional diagram of a combined pressure head used for lens grinding in an embodiment of the present application;

[0015] Figure 3 It is a cross-sectional view of a combined pressure head used for lens grinding processing in an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0017] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present invention. As used in the specification and appended claims of the present invention, the singular expressions "a", "an", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0018] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0019] Example 1: Figure 1-3 As shown, a combined pressure head for lens grinding is mainly composed of two parts: one is the pressure head 100, and the other is the lens clamp 200 matched therewith. The lens clamp 200 has two main functional ends, namely a connecting end 201 and a clamping end 202.

[0020] The connecting end 201 is mainly used to achieve a detachable connection with the pressure head 100. Specifically, a rotatable threaded sleeve 211 is designed on the outer side of the connecting end 201. When the lens fixture 200 and the pressure head 100 need to be connected, the threaded sleeve 211 can be rotated to match the corresponding thread on the pressure head 100, thereby achieving a tight connection between the two. In addition, when the threaded sleeve 211 is fully connected to the pressure head 100, the end face of the connecting end 201 can be tightly against the pressure head 100, which further enhances the stability of the connection.

[0021] The clamping end 202 is mainly used to clamp and fix the lens. It is designed with a groove 221, the shape and size of which match the lens to be clamped, so as to achieve the snap-in fit of the lens. In order to prevent the lens from being damaged during the clamping process, a buffer layer 222 is specially provided on the inner side of the groove 221. This buffer layer 222 is made of a soft and wear-resistant material, such as a rubber layer, which can not only protect the surface of the lens from scratches, but also increase the friction between the lens and the clamp to prevent the lens from sliding during the processing process.

[0022] During operation (grinding the lens), one side of the lens is inserted into the groove 221, the depth of the groove 221 is less than the thickness of the lens, so that the other side of the lens can expose the clamping end 202, and the grinding equipment is started. The pressure head 100 moves downward to drive the lens inserted on the clamping end 202 toward the grinder, thereby grinding it.

[0023] The clamp in this embodiment can be easily connected and disassembled with the pressure head, which greatly improves the flexibility and efficiency of lens processing; at the same time, by adding a buffer layer, the lens is effectively protected from damage, thereby improving the yield rate of lens processing.

[0024] Example 2: Figure 3 As shown, on the basis of Example 1, in order to prevent unnecessary relative rotation between the pressure head 100 and the lens fixture 200, an anti-rotation mechanism is further provided between the pressure head 100 and the lens fixture 200, and the anti-rotation mechanism is used to prevent the pressure head 100 and the lens fixture 200 from rotating significantly.

[0025] In a possible implementation, the anti-rotation mechanism includes a polygonal limiting column 101 disposed on the pressure head 100, and a polygonal limiting hole 212 provided on the end surface of the connection end 201, wherein the polygonal limiting hole 212 is used for detachable insertion cooperation with the polygonal limiting column 101. Specifically, the polygonal limiting column 101 is in the shape of a hexagonal prism, and the polygonal limiting hole 212 is a hexagonal hole that cooperates with the polygonal limiting column 101 in the shape of a hexagonal prism.

[0026] The shapes of the polygonal limiting column 101 and the polygonal limiting hole 212 match (for example, both are hexagonal). When the lens clamp 200 is connected to the pressure head 100, the polygonal limiting column 101 can be tightly inserted into the polygonal limiting hole 212, thereby achieving positioning and matching between the two.

[0027] Since the lengths of the sides of the polygonal structure are equal and the sizes of the angles are fixed, when the polygonal limiting pillar is inserted into the polygonal limiting hole, their relative positions are uniquely determined. In this way, even under the action of external force, there will be no relative rotation between the pressure head and the lens fixture.

[0028] Example 3: Figure 2-3 As shown, based on the first and second embodiments, the third embodiment further improves the clamping end 202 of the lens clamp by adding a plug hole 223. The plug hole 223 extends from the outer side of the clamping end 202 to the groove 221 and is located close to the bottom surface of the groove 221.

[0029] The design of the insertion hole 223 is mainly to solve the problem that the lens stuck in the groove 221 is difficult to remove after the lens processing is completed. Since the fit between the lens and the groove 221 is usually tight to ensure that the lens does not slip or fall off during the processing, it is sometimes found that the lens is difficult to remove directly from the groove by hand after the processing is completed.

[0030] When the lens needs to be taken out, the operator can insert a pry bar into the insertion hole 223 and then use the leverage provided by the pry bar to pry out the lens stuck in the groove 221 .

[0031] During the specific operation, one end of the pry bar can be inserted into the insertion hole 223 and pressed against the edge of the lens, while the other end of the pry bar can be used as a force application point. By applying appropriate force to the pry bar, the lens can be slightly moved or tilted in the groove 221, making it easier to remove the lens.

[0032] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A combined pressure head for lens grinding, characterized in that: The lens clamp (200) comprises a lens clamp (200) for connecting to a pressure head (100), the lens clamp (200) comprises a connecting end (201) and a clamping end (202), the clamping end (202) has a groove (221) for engaging with a lens, a threaded sleeve (211) is rotatably sleeved on the outer side of the connecting end (201), and the connecting end (201) is detachably connected to the pressure head (100) via a thread; When the threaded sleeve (211) is connected to the pressure head (100), the end surface of the connecting end (201) can abut against the pressure head (100).

2. A combined pressure head for lens grinding as claimed in claim 1, characterized in that: An anti-rotation mechanism is further provided between the pressure head (100) and the lens fixture (200), and the anti-rotation mechanism is used to prevent the pressure head (100) and the lens fixture (200) from rotating substantially.

3. A combined pressure head for lens grinding as claimed in claim 2, characterized in that: The anti-rotation mechanism comprises a polygonal limiting column (101) arranged on the pressure head (100), and a polygonal limiting hole (212) opened on the end surface of the connecting end (201), wherein the polygonal limiting hole (212) is used for detachable insertion cooperation with the polygonal limiting column (101).

4. A combined pressure head for lens grinding as claimed in claim 3, characterized in that: The polygonal limiting column (101) is in the shape of a hexagonal column, and the polygonal limiting hole (212) is a hexagonal hole that matches the hexagonal polygonal limiting column (101).

5. The combined pressure head for lens grinding as claimed in claim 1, characterized in that: A buffer layer (222) is provided on the inner side of the groove (221), and the buffer layer (222) is used for contacting and cooperating with the lens.

6. The combined pressure head for lens grinding as claimed in claim 1, characterized in that: An insertion hole (223) is provided on the outer side of the clamping end (202), and the insertion hole (223) passes through the groove (221) and is arranged close to the bottom surface of the groove (221).

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