CN113276347B

CN113276347B - Eccentricity adjusting device, lens injection mold and eccentricity adjusting method

Info

Publication number: CN113276347B
Application number: CN202010101805.0A
Authority: CN
Inventors: 沈文荣; 张岩
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2023-03-24
Anticipated expiration: 2040-02-19
Also published as: CN113276347A

Abstract

The invention provides an eccentric adjusting device, a lens injection mold and an eccentric adjusting method, wherein the eccentric adjusting device comprises a substrate, and the substrate is provided with at least one hole; a receiving member passing through the cavity; and the adjusting component comprises an adjusting body and at least one adjusting sheet, the adjusting body is arranged in the hole, the adjusting body is provided with an inner hole, the inner hole is sleeved with the bearing component, and the adjusting sheet is clamped between the adjusting body and the inner wall of the hole, so that the center line of the inner hole of the adjusting body is consistent with the center line of the bearing component. The invention shortens the time for adjusting the eccentricity and improves the production efficiency and the product quality of the lens.

Description

Eccentricity adjusting device, lens injection mold and eccentricity adjusting method

Technical Field

The invention relates to the field of product eccentricity of an optical lens injection mold, in particular to an eccentricity adjusting device, a lens injection mold and an eccentricity adjusting method.

Background

With the rapid development of the intelligent level, optical lenses are widely applied in the field of automobile safety and in the field of surveillance. Along with the improvement of the requirements of people on the imaging quality of lenses in an imaging system and the requirements on the precision of the lenses, the requirements on an optical lens injection molding lens forming mold are higher and higher, but the current injection mold cannot completely meet the precision requirements, particularly the high eccentricity precision requirements, required by the current vehicle-mounted lens injection molding lenses basically due to the influence of the processing precision and the assembling precision.

The existing method needs to integrally remove a mold frame when the eccentricity problem caused by lens mold processing is adjusted, and further lens eccentricity is adjusted by adjusting the angle of a mold core (the top of the mold core is a lens forming surface).

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to shorten the time for adjusting eccentricity and improve the production efficiency and the product quality of the lens.

An embodiment of the present invention provides an eccentricity adjustment apparatus, including:

a substrate, wherein the substrate is provided with at least one hole;

a receiving member passing through the cavity; and

the adjusting component comprises an adjusting body and at least one adjusting sheet, the adjusting body is arranged in the hole and provided with an inner hole, the inner hole is sleeved with the bearing component, and the adjusting sheet is clamped between the adjusting body and the inner wall of the hole, so that the central line of the inner hole of the adjusting body is consistent with the central line of the bearing component.

Preferably, the edge of the adjusting body is provided with at least one positioning groove for limiting the adjusting sheet, and the at least one adjusting sheet is clamped between the positioning groove and the inner wall of the hole.

Preferably, at least one adjusting sheet in an adjusting sheet group is arranged in the positioning groove.

Preferably, the tab in the detent is configured to replace tabs of different thicknesses to change the position of the centerline of the inner bore of the adjustment body in the cavity.

Preferably, the positioning grooves are respectively arranged on the edges of different sides of the adjusting body, each positioning groove is configured to correspond to an adjusting sheet group, the adjusting sheet group is provided with n adjusting sheets with different thicknesses, and n is larger than or equal to 2.

Preferably, the adjusting assembly further comprises at least one pressing block for adjusting the width of the gap between the adjusting body and the hole.

Preferably, a first inclined plane is arranged at the edge of the adjusting body, the pressing block is provided with a second inclined plane in surface contact with the first inclined plane, and at least one screw hole is formed in the periphery of the hole; the pressing block is screwed tightly with the screw holes in the periphery of the hole, and the adjusting piece is extruded by the pressing block through the adjusting body, and the adjusting body is clamped in the hole.

Preferably, the outer periphery of the cavity is provided with a first inner concave shoulder for accommodating the adjusting body, one corner of the inner concave shoulder is provided with a second inner concave shoulder for forming a screw hole, and the first inner concave shoulder is lower than the second inner concave shoulder.

Preferably, a height-adjusting gasket is arranged between the first inner concave shoulder and the adjusting body.

Preferably, the inner cross-sectional contour of the inner bore of the adjustment body matches the outer cross-sectional contour of the socket assembly.

Preferably, the cross section of the adjusting body is a polygon, the polygon is provided with at least two groups of parallel opposite sides, and each group of the opposite sides is at least provided with a positioning groove.

Preferably, the cross section of the regulating body is a rectangle, two adjacent sides of the rectangle are respectively provided with the positioning groove, and the thickness change of the regulating sheet in the positioning groove provides the displacement of the regulating body in different directions in the hole.

Preferably, the cross section of the regulating body is a hexagon, two adjacent sides of the hexagon are respectively provided with the positioning groove, and the thickness change of the regulating sheet in the positioning groove provides the displacement of the regulating body in different directions in the hole.

Preferably, the adjusting assembly further comprises at least one height-adjusting gasket, and the height-adjusting gasket is arranged between the bottom surface of the inner wall of the cavity and the adjusting body.

Preferably, the height-adjusting gasket is screwed to the bottom surface of the inner wall of the cavity.

Preferably, the base plate is provided with at least one injection runner, and each cavity is communicated with the injection runner through a communication groove.

Preferably, the adjusting body and the adjusting sheet are provided with notches communicated with the communicating groove.

Preferably, the receiving component is provided with an inner hole sleeving structure for forming the lens, and the top of the receiving component is a lens forming surface.

Preferably, the bearing assembly moves in a direction perpendicular to the substrate to eject the molded lens.

The embodiment of the present invention also provides a lens injection mold, including: such as the eccentric adjustment device described above.

The embodiment of the present invention also provides a lens injection mold, including: the upper injection mold and the lower injection mold are both eccentric adjusting devices, and a bearing component of the upper injection mold and a bearing component of the lower injection mold are arranged oppositely to form an injection molding space of an injection molding lens in a combined mode.

The embodiment of the invention also provides an eccentric adjustment system method, which adopts the lens injection mold and comprises the following steps:

adopting the lens injection mold to inject a test lens;

measuring an eccentricity parameter of the test lens;

replacing the adjusting sheet in the lens injection mold, and compensating the eccentric parameter in the lens injection mold through the adjusting sheets with different thicknesses; and

and adopting the compensated lens injection mold to inject the lens.

adopting the lens injection mold to inject a test lens;

measuring an eccentricity parameter of an upper surface and an eccentricity parameter of a lower surface of the test lens;

replacing the adjusting sheet in the upper injection mold, compensating the eccentric parameter of the upper surface in the lens injection mold through the adjusting sheets with different thicknesses, replacing the adjusting sheet in the lower injection mold, and compensating the eccentric parameter of the lower surface in the lens injection mold through the adjusting sheets with different thicknesses; and

and adopting the compensated lens injection mold to inject the lens.

Due to the technical characteristics, the eccentric adjusting device, the lens injection mold and the eccentric adjusting system method have the following advantages:

(1) The eccentricity can be adjusted without removing the mold, the eccentricity adjusting time is shorter than that of the existing adjusting mode, and the efficiency is higher.

(2) Carry out eccentric regulation through adjusting the gasket, the regulating variable easily manages and controls, and the precision is higher, can adjust to "0".

(3) Because the product eccentricity can be adjusted through an external structure mode, the internal precision of the die can be reduced compared with the prior art, and the cost can be effectively reduced.

(4) After the eccentric index is adjusted to be 0, the precision of the die is greatly improved, and the anti-counterfeiting mark can be synchronously added.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a first eccentric adjustment device of the present invention in cooperation with a receiving assembly.

Fig. 2 is a perspective view showing a combined state of the adjustment members in the second eccentric adjustment apparatus of the present invention.

Fig. 3 isbase:Sub>A partial sectional view ofbase:Sub>A second eccentric adjusting apparatus of the present invention, taken along the linebase:Sub>A-base:Sub>A of fig. 2.

FIG. 4 is a flow chart of a first eccentric adjustment system method of the present invention.

FIG. 5 is a cross-sectional view of the lens injection mold of the present invention.

Fig. 6 is a perspective view showing an exploded state of an adjustment assembly in the eccentric adjustment apparatus of the present invention.

Fig. 7 is a perspective view showing a combined state of the adjustment members in the eccentric adjusting apparatus of the present invention.

Fig. 8 is a cross-sectional view taken along line C-C of fig. 7.

Fig. 9 is a top view of the adjustment assembly in the eccentric adjustment apparatus of the present invention in a compressed state.

Fig. 10 is a cross-sectional view taken along line D-D in fig. 9.

Fig. 11 is a plan view of the eccentric adjusting apparatus of the present invention after replacing the adjusting piece.

FIG. 12 is a top view of the adjustment assembly in a compressed state in another eccentric adjustment apparatus of the present invention.

FIG. 13 is a flow chart of a second eccentric adjustment system method of the present invention.

Reference numerals

1. Movable side substrate 3 substrate

11. Movable side core 31 cavity

12. First inner concave shoulder of movable side bush 311

13. Second inner concave shoulder of finished product displacement block 312

131. First inclined surface 313 screw hole

132. Screw hole 4 adjusting component

133. Positioning groove 41 regulating body

14. First end of first eccentric adjusting piece 411

141. Second end of notch 412

15. Pressing block 413 first inclined plane

151. Positioning groove of second inclined surface 414

152. Screw hole 42 adjusting sheet

153. Screw 43 compact heap

16. Height-adjustable gasket 431 second inclined plane

2. Screw for fixing side substrate 44

21. Fixed side mold core 45 heightening gasket

22. Fixed side bush 51 mold core

23. Cluster mounting block 52 bushing

24. Second eccentric adjustment flap 6 coding

25. Screw with a thread

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

FIG. 1 is a cross-sectional view of a first eccentric adjustment device of the present invention in cooperation with a receiving assembly. As shown in fig. 1, a first eccentric adjusting apparatus of the present invention includes: a base plate 3, a receiving assembly and a regulating assembly 4. The substrate 3 is provided with at least one cavity 31. The receiving assembly passes through the hole 31, the receiving assembly has an inner hole socket structure for forming the lens, the top of the receiving assembly is a lens forming surface, and the receiving assembly comprises a mold core 51 and a bushing 52 for sleeving the mold core 51. The carrier assembly is moved in a direction perpendicular to the base plate 3 (the plane formed by the z-axis in the figure) to eject the molded lens. The adjusting assembly 4 includes an adjusting body 41, at least one adjusting plate 42 and a height adjusting pad 45. The adjusting body 41 is disposed in the cavity 31, the adjusting body 41 has an inner hole, the inner hole is sleeved with the receiving component, and the adjusting piece 42 is clamped between the adjusting body 41 and the inner wall of the cavity 31, so that the center line of the inner hole of the adjusting body 41 is consistent with the center line of the receiving component. The edge of the adjusting body 41 is provided with at least one positioning groove (not shown) for limiting the adjusting sheet 42, and the at least one adjusting sheet 42 is clamped between the positioning groove and the inner wall of the cavity 31.

In the embodiment, the distance between the edge of the adjusting body 41 and the inner wall of the hole 31 is changed completely by the thickness of the adjusting sheet 42, and the adjusting sheet 42 in the positioning groove is configured to replace the adjusting sheet 42 with different thickness so as to change the position of the center line of the inner hole of the adjusting body 41 in the hole 31. The edges of different sides of the adjusting body 41 are respectively provided with a positioning groove, each positioning groove is configured to correspond to an adjusting sheet group, the adjusting sheet group is provided with n adjusting sheets 42 with different thicknesses, and n is more than or equal to 2. According to the requirement of the aligning distance, a regulating sheet with a matched thickness can be selected from the regulating sheet group in each positioning groove to be placed in the positioning groove, and if the side, provided with the positioning groove, of the regulating body 41 is expected to be closer to the inner wall of the hole 31, the regulating sheet 42 with a thinner thickness is selected; conversely, when the side of the adjustment body 41 having the positioning groove is further away from the inner wall of the cavity 31, the adjustment sheet 42 with a thicker thickness is selected. The present invention allows the support assembly to be adjusted in the plane of the cavity 31 (the plane defined by the x-axis and y-axis directions in the figure) by providing a combination of positioning slots and tabs 42 in a plurality of directions. A height-adjusting shim 45 is arranged between the bottom surface of the inner wall of the cavity 31 and the adjustment body 41 to enable adjustment of the receiving assembly in the z-axis direction. In the present embodiment, the height-adjusting washer 45 is screwed to the bottom surface of the inner wall of the cavity 31, but not limited thereto. According to the invention, the adjusting gaskets or the height-adjusting gaskets are arranged between different sides of the adjusting body 41 and the inner wall of the cavity 31, so that the bearing assembly is accurately positioned in the cavity 31, and the high-precision eccentric adjustment of the injection molding lens is realized.

Fig. 2 is a perspective view showing a combined state of the adjustment members in the second eccentric adjustment apparatus of the present invention. Fig. 3 isbase:Sub>A partial sectional view ofbase:Sub>A second eccentric adjusting apparatus of the present invention, taken along the linebase:Sub>A-base:Sub>A of fig. 2. As shown in fig. 2 or 3, a first eccentric adjusting apparatus of the present invention includes: base plate 3, accept subassembly and adjusting part 4. The substrate 3 is provided with at least one cavity 31. The receiving assembly passes through the hole 31, the receiving assembly has an inner hole socket structure for forming the lens, the top of the receiving assembly is a lens forming surface, and the receiving assembly comprises a mold core 51 and a bushing 52 for sleeving the mold core 51. The carrier assembly is moved in a direction perpendicular to the base plate 3 (the plane formed by the z-axis in the figure) to eject the molded lens. The adjusting assembly 4 includes an adjusting body 41, at least one adjusting sheet 42, a height-adjusting washer 45, and a pressing block 43 for adjusting the width of the gap between the adjusting body 41 and the cavity 31. The adjusting body 41 is disposed in the hole 31, and the adjusting body 41 is further provided with a screw hole 132 screwed with the hole. The adjustment body 41 has an inner bore which receives the receiving member, and the adjustment tab 42 is captured between the adjustment body 41 and the inner wall of the cavity 31 such that the centerline of the inner bore of the adjustment body 41 is aligned with the centerline of the receiving member. The edge of the adjusting body 41 is provided with at least one positioning groove 414 for limiting the adjusting sheet 42, and the at least one adjusting sheet 42 is clamped between the positioning groove 414 and the inner wall of the cavity 31. The tab 42 in the positioning slot 414 is configured to replace tabs 42 of different thicknesses to change the position of the centerline of the inner bore of the adjustment body 41 in the cavity 31. The edges of different sides of the adjusting body 41 are respectively provided with a positioning groove 414, each positioning groove 414 is configured to correspond to an adjusting sheet group, the adjusting sheet group is provided with n adjusting sheets 42 with different thicknesses, and n is greater than or equal to 2. According to the requirement of the aligning distance, one adjusting sheet 42 or a combination of a plurality of adjusting sheets 42 with matched thickness (the total thickness of the adjusting sheets 42 meets the requirement of the aligning distance) can be selected from the adjusting sheet group in each positioning groove 414 to be placed in the positioning groove 414, and if the side of the adjusting body 41 with the positioning groove 414 is expected to be closer to the inner wall of the hole 31, the adjusting sheet 42 with thinner thickness is selected; conversely, when the side of the adjusting body 41 having the positioning groove 414 is further away from the inner wall of the cavity 31, the adjusting sheet 42 with a thicker thickness is selected. The present invention allows the receiving assembly to be adjusted in the plane of the cavity 31 (the plane formed by the x-axis and y-axis directions in the figure) by providing a combination of positioning slots 414 and tabs 42 in multiple directions. A height-adjusting shim 45 is arranged between the bottom surface of the inner wall of the cavity 31 and the adjustment body 41 to enable adjustment of the receiving assembly in the z-axis direction.

In the present embodiment, not only the distance between the edge of the adjustment body 41 and the inner wall of the hole 31 is changed by the thickness of the adjustment piece 42, but also the adjustment piece 42 is further clamped by the pressing block 43, and the centering accuracy is ensured. The adjusting body 41 has a first end 411 and a second end 412 that are opposite to each other, the first end 411 is provided with a first inclined surface 413, and two side edges holding the second end 412 are respectively provided with a positioning groove 414. The pressing block 43 has a second inclined surface 431 in surface contact with the first inclined surface 413, and the outer periphery of the hole 31 is provided with at least one screw hole; as the pressing block 43 is screwed tightly to the screw hole on the outer periphery of the hole 31, the pressing block 43 presses the regulating piece 42 through the regulating body 41 and clamps the regulating body 41 to the hole 31. The pressing blocks 43 press the adjusting sheets 42 to be respectively pressed on the inner walls of the holes 31 along respective contact directions, so that the adjusting sheets 42 are pressed on the holes 31, and the accuracy of eccentric adjustment is improved. In this embodiment, the resultant direction of the pressure applied to the inner wall of the cavity 31 by the two adjusting tabs 42 is the same as the thrust direction of the second inclined surface 431 against the first inclined surface 413. The through direction of the hole 31 is parallel to the axial direction of the screw hole 313. By the second slope 431 cooperating with the first slope 413, the pressing motion of the pressing block 43 in the first direction (z-axis direction) is changed to a motion of pressing the regulating body 41 in a direction perpendicular to the first direction. In a preferred embodiment, as the pressing block 43 is screwed tightly to the screw hole 313 of the adjusting body 41, the outer circumference of the adjusting component 4 increases based on a plane perpendicular to the first direction, and the adjusting component 4 is in interference fit with the inner wall of the hole 31, so as to enhance the stability of the position relationship between the adjusting component 4 and the inner wall of the hole 31.

The outer periphery of the cavity 31 is provided with a first inner concave shoulder 311 for accommodating the adjusting body 41, a corner of the inner concave shoulder is provided with a second inner concave shoulder 312 for forming a screw hole, and the first inner concave shoulder 311 is lower than the second inner concave shoulder 312. The inner cross-sectional contour of the inner bore of the adjustment body 41 matches the outer cross-sectional contour of the receiving assembly. The cross section of the adjusting body 41 is a polygon, the polygon has at least two parallel opposite sides, and each opposite side is at least provided with a positioning groove 414. The cross-section of the adjusting body 41 is a rectangle, two adjacent sides of the rectangle are respectively provided with a positioning slot 414, and the thickness variation of the adjusting sheet 42 in the positioning slot 414 provides the displacement of the adjusting body 41 in different directions in the cavity 31. In the present embodiment, the adjustment body 41 has a quadrangular contour, and a set of opposite corners of the adjustment body 41 form a first end 411 and a second end 412, respectively. The adjusting body 41 has a square profile, and the pressure directions of the two adjusting sheets 42 acting on the inner wall of the cavity 31 are perpendicular to each other, so as to improve the stability of the adjusting body 41 fixed in the cavity 31 and avoid the movement during lens injection, but not limited thereto.

The base plate 3 is provided with at least one injection runner, to which each cavity 31 communicates through a communication channel. In order to match with the injection molding runner, the adjusting body 41 and the adjusting sheet 42 are both provided with notches communicated with the communicating groove, so that injection molding liquid can flow into the communicating groove through the injection molding runner and pass through the notches of the adjusting body 41 and the adjusting sheet 42 to enter an injection molding space for forming the injection molding lens during lens injection molding.

In the present embodiment, the height-adjusting washer 45 is screwed to the bottom surface of the inner wall of the cavity 31, but not limited thereto. The invention arranges adjusting gaskets or heightening gaskets between different sides of the adjusting body 41 and the inner wall of the cavity 31, and arranges a heightening gasket 45 between the first inner concave shoulder 311 and the adjusting body 41. Thereby realizing accurate positioning of the bearing component in the cavity 31 and realizing high-precision eccentric adjustment of the injection molding lens.

The eccentric adjusting device of the invention mainly changes the distance between the adjusting body 41 and the hole 31 in the second direction (x-axis direction) and the third direction (y-axis direction) by matching a set of adjusting components 4 and the template 3 and replacing adjusting sheets with different thicknesses in the second direction (x-axis direction) and the third direction (y-axis direction) which are perpendicular to each other in a plane perpendicular to the first direction (z-axis direction) through two adjusting sheets which are perpendicular to each other, thereby realizing the accurate fine adjustment of the mold core components in the range of the hole 31, shortening the eccentric adjusting time and improving the production efficiency and the product quality of the lens.

In one variation, the present invention may have multiple sets of eccentric adjustment devices, adapted for use with a single multi-cavity lens mold, for eccentric adjustment of multiple lens molds. The present invention is applicable to any cube, including but not limited to a cube, and the present invention is also applicable to any angular adjustment, including but not limited to XY direction adjustment.

The embodiment of the present invention also provides a lens injection mold, including: as mentioned above, each of the cavities is configured as a single-sided injection molding space for injecting the lens, and the related technical features are as described above and will not be described herein again.

FIG. 4 is a flow chart of a first eccentric adjustment system method of the present invention. As shown in fig. 4, the embodiment of the present invention further provides a first off-center adjustment method, which uses the lens injection mold (refer to fig. 1 to 3) as described above, and includes the following steps:

s101, adopting the lens injection mold to inject a test lens.

And S102, measuring the eccentricity parameters of the test lens.

S103, replacing the adjusting sheet in the lens injection mold, and compensating the eccentric parameters in the lens injection mold through the adjusting sheets with different thicknesses, for example: the point position of the single-side eccentricity of the movable side is adjusted to be 0 by thickening or thinning the thickness of the eccentricity adjusting sheet. Thereby enabling the single-side eccentricity of the product to be freely adjusted and achieving the purpose of adjusting the eccentricity to 0.

And S104, adopting the compensated lens injection mold to inject the lens. By the method, the single-side eccentricity of the injection-molded lens can be conveniently adjusted, and the related technical characteristics are as described above and are not described again.

FIG. 5 is a cross-sectional view of the lens injection mold of the present invention. Fig. 6 is a perspective view showing an exploded state of an adjustment assembly in the eccentric adjustment apparatus of the present invention. As shown in fig. 5 to 6, the lens injection mold of the present invention comprises: a movable side shaping plate 1 and a fixed side shaping plate 2 which are mutually matched. Wherein, movable side template 1 is equipped with an at least hole along the first direction, the periphery in hole is equipped with a screw, mold core assembly passes through the hole, mold core assembly includes movable side mold core 11 and cup joints movable side bush 12 of movable side mold core 11, movable side mold core 11 sets up towards fixed side template 2, finished product displacement movable block 13 sets up in the hole, mold core assembly is cup jointed to finished product displacement movable block 13's hole, finished product displacement movable block 13 has first end and the second end that deviates from mutually, first end is equipped with a first inclined plane 131, the both sides limit of centre gripping second end is equipped with a constant head tank 133 respectively. The product displacement block 13 is also provided with a threaded hole 132 for threaded engagement with the cavity. Two adjusting sheets 14 in the adjusting sheet set are respectively embedded between the positioning groove 133 of the finished product moving block 13 and the inner wall of the hole. The second inclined plane 151 of the pressing block 15 is in surface contact with the first inclined plane 131, and along with the screw holes on the periphery of the hole of the movable side template 1 screwed by the pressing block 15, the pressing adjusting sheets 14 are respectively pressed on the inner wall of the hole along respective contact directions, and by replacing the thickness of the adjusting sheet 14 in the movable side template 1, the eccentric position of the die component in the movable side template 1 is compensated based on the second direction (x axis) and the third direction (y axis) of the finished product displacement moving block 13. In a preferred embodiment, an elevation spacer 16 is provided between the cavity and the final product displacement moving block 13, and the height position of the core assembly in the first direction (z-axis) is adjusted by replacing the elevation spacer 16 with a different thickness. In a preferred embodiment, the adjusting plate 14 may also be provided with a notch communicating with the injection molding pipeline to facilitate the circulation of the injection molding material to realize the lens molding.

Fig. 7 is a perspective view showing a combined state of the adjustment members in the eccentric adjustment apparatus of the present invention. Fig. 8 is a cross-sectional view taken along line C-C of fig. 7. Fig. 9 is a plan view showing a pressing state of an adjustment block in the eccentric adjusting apparatus of the present invention. Fig. 10 is a cross-sectional view taken along line D-D in fig. 9. As shown in fig. 7 to 10, taking the movable side die plate 1 and the finished product moving block 13 as an example, after the pressing block 15 is screwed tightly to the screw hole on the outer periphery of the hole, the second inclined surface 151 of the pressing block 15 is in surface contact with the first inclined surface 131, and the finished product moving block 13 presses the adjusting piece 14 against the inner wall of the hole by the downward screwing force generated as the pressing block 15 pushes the finished product moving block 13. In this embodiment, the resultant force direction of the pressing forces Fx and Fy respectively applied to the inner wall of the cavity by the two adjusting tabs 14 is the same as the direction of the pushing force Fw pressing the second inclined surface 431 against the first inclined surface 413.

Fig. 11 is a plan view of the eccentric adjusting apparatus of the present invention after replacing the adjusting piece. As shown in fig. 7 to 11, since the space of the cavity is not changed, as can be seen from comparing fig. 9 and 11, the distance between the finished product moving block 13 and the cavity 31 is changed after the adjusting tab 14 with different thickness is replaced, so that the distance between the finished product moving block 13 and the cavity in the second direction (x-axis) and the third direction (y-axis) is changed, and the position adjustment of the movable-side mold core 11 based on the x-axis and the y-axis in the plane is realized, which can be used for supplementing the eccentricity of the lens.

Similarly, the fixed side mold plate 2 is provided with at least one hole along the first direction, the periphery of the hole is provided with a screw hole, the mold core assembly is arranged in the hole, the mold core assembly comprises a screw 25, a fixed side mold core 21 and a fixed side lining 22 sleeved on the fixed side mold core 21, the fixed side mold core 21 is arranged towards the movable side mold plate 1, and an injection molding space for injection molding of the lens is formed between the movable side mold core 11 and the fixed side mold core 21. The cluster mounting block 23 is disposed in the hole, an inner hole of the cluster mounting block 23 is sleeved with the die core assembly, the cluster mounting block 23 has a first end and a second end which are deviated from each other, the first end is provided with a first inclined plane 131, and two side edges for clamping the second end are respectively provided with a positioning groove 133. Two adjusting sheets 24 in the adjusting sheet group are respectively embedded between the positioning groove 133 of the bundling mounting block 23 and the inner wall of the hole. The second inclined plane 151 of compact heap 15 and the face contact of first inclined plane 131, compact heap 15 is equipped with screw 152, through the screw of the periphery of screw 153 spiro union to the hole, along with compact heap 15 spiro union in fixed side template 2, oppresses the inner wall that the adjustment sheet 24 compressed tightly in the hole respectively along respective direction of contact, through changing the adjustment sheet 24 thickness in fixed side template 2, compensates the eccentric position of mould core subassembly in fixed side template 2. The related art features are shown as the matching of the movable side mould plate 1 and the finished product moving block 13, and are not described in detail here.

The invention realizes a high-precision mold structure capable of freely adjusting the eccentricity of an injection molding lens by introducing the combination of a moving block (the movable side is a finished product moving block and the fixed side is a bundling moving block) and an eccentric adjusting sheet into the mold structure. After the movable side mold core is installed, according to the eccentric data of the first sample, the single-side eccentricity of the lens is adjusted to be 0 by thinning or thickening the eccentric adjusting sheet. The fixed side is moved relative to the movable side by the same procedure with the movable side as a reference, so that the single-side eccentricity and the inter-side eccentricity of the product are adjusted to be 0. The whole adjusting process can also be performed by adjusting the fixed side first and then adjusting the movable side by taking the fixed side as a reference.

The eccentric adjusting device in the embodiment mainly comprises a lining, a finished product displacement moving block, a mold core, an eccentric adjusting sheet, a height adjusting gasket, screws and the like. The assembly process is as follows:

(1) The bushing is firstly installed into the movable side template, the heightening gasket penetrates through the upper half part of the bushing and is locked with the movable side template through a screw, the finished product moving block also penetrates through the upper half part of the bushing and is placed on the heightening gasket, and the heightening gasket can adjust the height of the finished product moving block in the Z-axis direction.

(2) The eccentric adjusting sheets are respectively arranged on the X side and the Y side of the finished product displacement moving block, and the height of the eccentric adjusting sheets is flush with that of the finished product position square block.

(3) The pressing block is placed on the finished product displacement moving block, the position of the pressing block is located at the extending intersection of the opposite sides of the moving block corresponding to the eccentric adjusting sheet, force F in the direction of a figure 11 can be generated when the pressing block is screwed down by screws during assembly, force Fx and force Fy are generated on the X direction and the Y direction of the movable side template, and the eccentric adjusting sheet is fastened on the movable side template.

(4) The finished product displacement moving block and the movable side template are locked by the hexagon socket head cap screws, so that the moving block is prevented from moving in the Z-axis direction.

FIG. 12 is a top view of the adjustment assembly in a compressed state in another eccentric adjustment apparatus of the present invention. As shown in fig. 12, an embodiment of the present invention further provides another lens injection mold, including: as mentioned above, the cavity 31 and the finished product moving block 13 are hexagonal, and the adjusting sheet 14 is disposed on two sides of the finished product moving block 13 that are not adjacent to each other for single-sided eccentric adjustment of the injection-molded lens. Moreover, the requirements for inscribing the code 6 on the lens can be met, for example: and (5) anti-counterfeiting codes. On this basis, it is within the scope of the invention to vary the number of sides (8, 12, etc.) of the cavity 31 and the number and position of the adjustment flaps 14 based on the finished displacement blocks 13.

The embodiment of the present invention also provides a lens injection mold, including: the upper injection mold and the lower injection mold are closed, the upper injection mold and the lower injection mold are both provided with the eccentric adjusting devices, the mold core of the upper injection mold is used for double-sided eccentric adjustment of the injection molded lens, the assembly and the mold core assembly of the lower injection mold are arranged oppositely to form an injection molding space of the injection molded lens, and related technical characteristics are as described above and are not repeated herein.

FIG. 13 is a flow chart of a second eccentric adjustment system method of the present invention. As shown in fig. 13, the embodiment of the present invention further provides a second eccentric adjustment method, which uses the lens injection mold (refer to fig. 5 to 11) as described above, and includes the following steps:

s201, adopting the lens injection mold to inject a test lens;

s202, measuring the eccentricity parameter of the upper surface and the eccentricity parameter of the lower surface of the test lens;

s203, replacing the adjusting sheet in the upper injection mold, compensating the eccentric parameter of the upper surface in the lens injection mold through the adjusting sheets with different thicknesses, replacing the adjusting sheet in the lower injection mold, and compensating the eccentric parameter of the lower surface in the lens injection mold through the adjusting sheets with different thicknesses. Thereby enabling the double-sided eccentricity of the product to be freely adjusted and achieving the purpose of adjusting the eccentricity to 0.

And S204, adopting the compensated lens injection mold to inject the lens. Through the method, the double-side eccentricity adjustment for the injection molding lens can be conveniently carried out, and the related technical characteristics are as described above and are not repeated.

In summary, the eccentric adjustment device, the lens injection mold and the eccentric adjustment method provided by the invention have the following advantages:

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An eccentric adjustment device, comprising:

a substrate, wherein the substrate is provided with at least one hole;

a receiving member passing through the cavity; and

the adjusting body is arranged in the hole and provided with an inner hole, the inner hole is sleeved with the bearing component, the central line of the inner hole of the adjusting body is consistent with the central line of the bearing component, the adjusting body is provided with a first end and a second end which are deviated from each other, the first end is provided with a first inclined plane, two side edges for clamping the second end are respectively provided with a positioning groove, and at least one adjusting sheet is clamped between the positioning groove and the inner wall of the hole.

2. The eccentric adjustment device of claim 1, characterized in that: at least one adjusting sheet in an adjusting sheet group is arranged in the positioning groove.

3. The eccentric adjustment device of claim 1, characterized in that: the tab in the detent is configured to displace tabs of different thicknesses to change the position of the centerline of the inner bore of the adjustment body in the cavity.

4. The eccentric adjustment device of claim 1, characterized in that: the edges of different sides of the adjusting body are respectively provided with the positioning grooves, each positioning groove is configured to correspond to an adjusting sheet group, the adjusting sheet group is provided with n adjusting sheets with different thicknesses, and n is larger than or equal to 2.

5. The eccentric adjustment device of claim 1, characterized in that: the adjusting assembly further comprises at least one pressing block for adjusting the width of the gap between the adjusting body and the hole.

6. The eccentric adjustment device of claim 5, characterized in that: the edge of the adjusting body is provided with a first inclined surface, the pressing block is provided with a second inclined surface in surface contact with the first inclined surface, and the periphery of the hole is provided with at least one screw hole; and the pressing block extrudes the adjusting sheet through the adjusting body and tightly clamps the adjusting body in the hole along with the pressing block screwed tightly in the screw hole on the periphery of the hole.

7. The eccentric adjustment device of claim 5, characterized in that: the periphery of the hole is provided with a first inner concave shoulder for accommodating the adjusting body, one corner of the inner concave shoulder is provided with a second inner concave shoulder for forming a screw hole, and the first inner concave shoulder is lower than the second inner concave shoulder.

8. The eccentric adjustment device of claim 7, characterized in that: a height-adjusting gasket is arranged between the first inner concave shoulder and the adjusting body.

9. The eccentric adjustment device of claim 5, characterized in that: the inner cross-sectional contour of the inner hole of the adjusting body is matched with the outer cross-sectional contour of the bearing assembly.

10. The eccentric adjustment device of claim 5, characterized in that: the cross section of the adjusting body is a polygon, the polygon is provided with at least two groups of parallel opposite sides, and each group of the opposite sides is at least provided with a positioning groove.

11. The eccentric adjustment device of claim 10, wherein: the cross section of the adjusting body is a rectangle, the positioning grooves are respectively arranged on two adjacent sides of the rectangle, and the thickness change of the adjusting sheet in the positioning grooves provides the displacement of the adjusting body in different directions in the hole.

12. The eccentric adjustment device of claim 10, characterized in that: the cross section of the adjusting body is a hexagon, the positioning grooves are respectively arranged on two adjacent sides of the hexagon, and the thickness change of the adjusting sheet in the positioning grooves provides the displacement of the adjusting body in different directions in the hole.

13. The eccentric adjustment device of claim 1, characterized in that: the adjusting component also comprises at least one height-adjusting gasket which is arranged between the bottom surface of the inner wall of the hole and the adjusting body.

14. An eccentric adjustment device according to claim 13, characterized in that: the height-adjusting gasket is screwed on the bottom surface of the inner wall of the cavity.

15. The eccentric adjustment device of claim 1, characterized in that: the base plate is provided with at least one injection molding runner, and each cavity is communicated with the injection molding runner through a communication groove.

16. The eccentric adjustment device of claim 15, characterized in that: the adjusting body and the adjusting sheet are both provided with notches communicated with the communicating grooves.

17. An eccentric adjustment device according to any of claims 1-16, characterized in that: the bearing component is provided with an inner hole sleeving structure for forming the lens, and the top of the bearing component is a lens forming surface.

18. An eccentric adjustment device according to claim 17, characterized in that: the bearing assembly moves along the direction vertical to the substrate to eject out the molded lens.

19. An injection mold for a lens, comprising: at least one eccentric adjustment device according to any of claims 1 to 18.

20. An injection mold for a lens, comprising: the upper injection mold and the lower injection mold are combined, the upper injection mold and the lower injection mold are the eccentric adjusting device as claimed in any one of claims 1 to 18, and the bearing component of the upper injection mold and the bearing component of the lower injection mold are arranged oppositely and combined to form an injection molding space for injecting the lens.

21. An eccentric adjustment system method using the lens injection mold of claim 19, comprising the steps of:

adopting the lens injection mold to inject a test lens;

measuring an eccentricity parameter of the test lens;

and adopting the compensated lens injection mold to inject the lens.

22. An eccentric adjustment system method using the lens injection mold according to claim 20, comprising the steps of:

adopting the lens injection mold to inject a test lens;

and adopting the compensated lens injection mold to inject the lens.