Contact lens pattern transfer printing device

Abstract

The utility model discloses a contact lens pattern transfer printing device which comprises a machine base, a dye supply mechanism and a transfer printing mechanism, a conveying mechanism is installed at the top of the machine base, a plurality of placing stations are evenly installed on the conveying mechanism and used for placing molds, a transverse driving mechanism is horizontally and fixedly arranged above the machine base through at least two sets of vertical arms, and the transverse driving mechanism is used for driving the machine base to rotate. A longitudinal driving mechanism is vertically installed at the output end of the transverse driving mechanism, the dye supply mechanism is installed at the output end of the longitudinal driving mechanism, a transfer printing mechanism is installed on the lower portion of the dye supply mechanism, the transfer printing mechanism is provided with a plurality of transfer printing rubber heads, and every two transfer printing rubber heads form a group. Pattern transfer printing between the printing flat plate and the transfer printing rubber head and between the transfer printing rubber head and the mold can be completed at the same time, the transfer printing path is shortened, the contact lens pattern transfer printing waiting time is shortened, and the contact lens pattern transfer printing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contact lens manufacturing, in particular to a contact lens pattern transfer device. Background Art

[0002] With the continuous development of the contact lens market, consumers' demand for the aesthetics and personalization of contact lenses is increasing. Pattern transfer technology, as an effective decorative method, can give contact lenses a unique appearance and enhance the added value of the product.

[0003] When transferring patterns, the traditional contact lens pattern transfer device needs to first transfer the dye pattern on the printing plate to the mold using a rubber head, and then use the mold to transfer the pattern to the contact lens. However, after each transfer of the mold pattern is completed, it is necessary to obtain the dye pattern from the printing plate next to it again, resulting in a long waiting time for the next mold to be transferred, which greatly affects the transfer efficiency of the pattern on the mold.

[0004] Therefore, it is necessary to provide a contact lens pattern transfer device to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a contact lens pattern transfer device, comprising: a machine base, a dye supply mechanism and a transfer mechanism, a transmission mechanism is installed on the top of the machine base, a plurality of placement stations are evenly installed on the transmission mechanism for placing molds, a transverse driving mechanism is horizontally fixed above the machine base through at least two groups of vertical arms, a longitudinal driving mechanism is vertically installed at the output end of the transverse driving mechanism, the dye supply mechanism is installed at the output end of the longitudinal driving mechanism, a transfer mechanism is installed at the lower part of the dye supply mechanism, the transfer mechanism has a plurality of transfer rubber heads, the transfer rubber heads are in groups of two, and can simultaneously complete the pattern transfer between the printing plate and the transfer rubber head and the transfer rubber head and the mold.

[0006] As a preferred technical solution of the utility model, the dye supply mechanism includes: an outer shell, a mixing bin body is provided in the upper inner part of the outer shell, the longitudinal cross-section of the mixing bin body is funnel-shaped, a stirring frame is coaxially rotated in the mixing bin body, and a plurality of feed pipes are provided at the upper end of the outer shell, and the feed pipes are connected to dye tanks of different colors accordingly.

[0007] As a preferred technical solution of the utility model, any of the feed pipes is connected to a cleaning liquid tank, and a recovery pipe is also provided on one side of the mixing bin body.

[0008] As a preferred technical solution of the utility model, the shell is provided with a mounting groove below the mixing bin body, the printing plate is inserted into the mounting groove, and the pattern of the printing plate faces downward.

[0009] As a preferred technical solution of the utility model, a fixed plate is fixedly arranged below the printing plate, an avoidance hole is opened on the fixed plate for the transfer rubber head to pass through, a scraper is arranged on the upper end of the fixed plate to be tilted and rotated, and the top of the scraper elastically rests on the printing plate for scraping the dye on the printing plate.

[0010] As a preferred technical solution of the utility model, a cotton block is provided on one side of the upper end of the scraper in the direction of rotation, and a scraper strip is provided on the other side. A flow channel is opened in the scraper, and the flow channel is connected with the cotton block and the feed hose respectively. The feed hose is connected with the mixing bin body, and a control pump is provided on the feed hose to realize the quantitative supply of dye.

[0011] As a preferred technical solution of the utility model, the transfer mechanism includes:

[0012] A fixed sleeve plate, fixedly arranged on the outer side of the lower part of the shell;

[0013] A drive shaft passes through the housing and is rotatably mounted on the lower end of the fixed sleeve, and the drive shaft is driven by an external motor;

[0014] A fixed cylinder is installed on the driving shaft perpendicular to the axis of the driving shaft. There are multiple fixed cylinders evenly distributed along the axis of the driving shaft. A slider is slidably arranged inside the fixed cylinder. Fixed rods are fixed at both ends of the slider. The transfer rubber head is installed at the outer end of each fixed rod. A supporting spring is elastically arranged between the slider and the end surface of the inner cavity of the fixed cylinder.

[0015] As a preferred technical solution of the utility model, a pressure sensing patch is attached between each of the support springs and the slider.

[0016] Compared with the prior art, the utility model provides a contact lens pattern transfer device, which has the following beneficial effects:

[0017] 1. By arranging two transfer rubber heads in groups of two at 180 degrees on the transfer mechanism, the transfer mechanism can simultaneously complete the pattern transfer between the printing plate and the transfer rubber head and between the transfer rubber head and the mold, shortening the transfer path, reducing the waiting time for pattern transfer on the mold, and improving the transfer efficiency of the mold pattern.

[0018] 2. By arranging a plurality of feeding pipes on the mixing bin of the dye supply mechanism, dyes of different colors and quantities can be introduced into the mixing bin in a certain proportion for stirring and color matching, thereby increasing the diversity of pattern color production. At the same time, when making patterns, the required dyes can be prepared and used immediately without pre-mixing, which is conducive to improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a contact lens pattern transfer device;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of a dye supply mechanism of a contact lens pattern transfer device;

[0021] Figure 3 It is a schematic cross-sectional structure diagram of a transfer mechanism of a contact lens pattern transfer device;

[0022] Figure 4 It is a schematic diagram of the scraper structure of a contact lens pattern transfer device;

[0023] Figure 5 It is a schematic diagram of the structure of a contact lens pattern transfer device during transfer;

[0024] In the figure: 1. base; 2. transmission mechanism; 3. placement station; 4. horizontal drive mechanism; 5. longitudinal drive mechanism; 6. dye supply mechanism; 61. shell; 62. stirring frame; 63. feed pipe; 64. feed hose; 65. fixed plate; 66. scraper; 661. cotton block; 662. scraper strip; 7. transfer mechanism; 71. fixed sleeve; 72. drive shaft; 73. fixed cylinder; 74. slider; 75. fixed rod; 76. support spring; 77. transfer rubber head; 8. printing plate; A. moving direction of transfer mechanism; Y, mold. DETAILED DESCRIPTION

[0025] See also Figure 1-5 The utility model provides a contact lens pattern transfer device, comprising:

[0026] A machine base 1, a dye supply mechanism 6 and a transfer mechanism 7, wherein a transmission mechanism 2 is installed on the top of the machine base 1, and a plurality of placement stations 3 are evenly installed on the transmission mechanism 2 for placing molds, a transverse driving mechanism 4 is horizontally fixed above the machine base 1 through at least two groups of vertical arms, a longitudinal driving mechanism 5 is vertically installed at the output end of the transverse driving mechanism 4, and the dye supply mechanism 6 is installed at the output end of the longitudinal driving mechanism 5, and a transfer mechanism 7 is installed at the lower part of the dye supply mechanism 6, and the transfer mechanism 7 has a plurality of transfer rubber heads 77, and the transfer rubber heads 77 are in groups of two, and can simultaneously complete the pattern transfer between the printing plate 8 and the transfer rubber head 77 as well as the transfer rubber head 77 and the mold.

[0027] It should be explained that the mold and the rubber head 77 are extruded and fitted together, so that the pattern on the rubber head 77 can be completely transferred to the mold surface for subsequent transfer of the contact lens pattern. The transmission mechanism 2 is a rigid chain transmission belt to prevent the placement station 3 from shaking during the pattern transfer process. When working, the placement station 3 equipped with the mold is moved to the bottom of the transfer mechanism 7 in turn through the transmission mechanism 2, and the transfer mechanism 7 is controlled by the longitudinal drive mechanism 5 to reciprocate and rise and fall to transfer the pattern to multiple molds in turn.

[0028] In this embodiment, the dye supply mechanism 6 includes: an outer shell 61, a mixing bin body is provided in the upper part of the outer shell 61, the longitudinal cross-section of the mixing bin body is funnel-shaped, a stirring frame 62 is coaxially rotated in the mixing bin body, and a plurality of feed pipes 63 are provided at the upper end of the outer shell 61, and the feed pipes 63 correspond to dye tanks of different colors.

[0029] Specifically, the stirring frame 62 is driven to rotate by a servo motor, and the rotation mode of the stirring frame 62 is intermittent forward and reverse rotation. The dye is stirred by the stirring rod on the stirring frame 62, so that the dye introduced into the mixing bin can be fully mixed to complete the preparation of the required dye.

[0030] Furthermore, through the provision of multiple feed pipes 63, dyes of different colors and quantities can be introduced into the mixing bin in a certain proportion for stirring and color matching to obtain the required dye color, thereby increasing the diversity of contact lens pattern color production. At the same time, when the pattern is produced, the required dye can be prepared and used immediately without pre-mixing, which is beneficial to improving the overall production efficiency.

[0031] In this embodiment, any of the feed pipes 63 is connected to a cleaning liquid tank, and a recovery pipe is also provided on one side of the mixing bin body.

[0032] Specifically, when replacing dyes of different colors, the remaining dyes in the bin can be collected and stored through the recovery pipe, and then the cleaning liquid is introduced through the feed pipe 63, and the inside of the bin is stirred and cleaned using the stirring rack 62 to avoid affecting the color of the subsequently replaced dye.

[0033] In this embodiment, the housing 61 is provided with a mounting groove below the mixing bin body, and the printing plate 8 is inserted into the mounting groove, with the pattern of the printing plate 8 facing downward.

[0034] In this embodiment, a fixed plate 65 is fixedly provided below the printing plate 8, and an avoidance hole is opened on the fixed plate 65 for the transfer rubber head 77 to pass through. A scraper 66 is tilted and rotatably provided on the upper end of the fixed plate 65, and the top of the scraper 66 elastically rests on the printing plate 8 for scraping the dye on the printing plate 8.

[0035] In this embodiment, a cotton block 661 is provided on one side of the upper end of the scraper 66 in the direction of rotation, and a scraper strip 662 is provided on the other side. A flow channel is opened in the scraper 66, and the flow channel is connected to the cotton block 661 and the feed hose 64 respectively. The feed hose 64 is connected to the mixing bin body. A control pump is provided on the feed hose 64 to realize quantitative supply of dye.

[0036] Specifically, the dye is temporarily adsorbed and stored by the cotton block 661 , and then the dye in the cotton block 661 is evenly smeared on the printing plate 8 by the rotating scraper 66 , and the dye is flattened by the scraper bar 662 .

[0037] In this embodiment, the transfer mechanism 7 includes:

[0038] A fixed sleeve plate 71 is fixedly mounted on the outer side of the lower portion of the housing 61;

[0039] A driving shaft 72 passes through the housing 61 and is rotatably mounted on the lower end of the fixed sleeve 71, and the driving shaft 72 is driven by an external motor;

[0040] A fixed cylinder 73 is installed on the driving shaft 72 perpendicular to the axis of the driving shaft 72. A plurality of fixed cylinders 73 are evenly distributed along the axis of the driving shaft 72. A slider 74 is slidably provided inside the fixed cylinder 73. Fixed rods 75 are fixed at both ends of the slider 74. The transfer rubber head 77 is installed at the outer end of each fixed rod 75. A support spring 76 is elastically provided between the slider 74 and the inner cavity end surface of the fixed cylinder 73.

[0041] Specifically, when the pattern is transferred, each fixed cylinder 73 is controlled to be in a vertical state, and then the transfer mechanism 7 is controlled to move downward as a whole through the longitudinal drive mechanism 5. At this time, there is no printed dye pattern on the upper and lower transfer rubber heads 77. The lower transfer rubber head 77 contacts the mold to push and compress the support spring 76 located at the top, so that the upper transfer rubber head 77 transfers the pattern on the printing plate 8, and then the external motor is controlled to rotate 180° to switch the positions of the upper and lower transfer rubber heads 77. At the same time, the scraper 66 is used to rotate to apply dye to the printing plate 8, and then the transfer rubber head 77 is moved to the upper and lower positions. The longitudinal driving mechanism 5 controls the transfer rubber head 77 on the other side to transfer the pattern on the printing plate 8. At the same time, the transfer rubber head 77 with the dye pattern below transfers the pattern to the mold, and then controls the mold to move to the bottom of the transfer mechanism. This process is repeated to transfer the pattern to the subsequent mold. By arranging the transfer rubber heads 77 in groups of two, the transfer mechanism 7 can simultaneously complete the transfer of patterns between the printing plate 8 and the transfer rubber head 77 as well as between the transfer rubber head 77 and the mold, shortening the transfer path, reducing the waiting time when transferring the pattern to the mold, and improving the transfer efficiency of the pattern on the mold.

[0042] As a preferred embodiment, the transfer mechanism 7 can be provided in multiple groups to sequentially transfer patterns of different colors to the mold, thereby enriching the colors and shapes of the pattern production.

[0043] In this embodiment, a pressure sensing patch is attached between each of the support springs 76 and the slider 74. The compression degree of the support springs 76 is used to determine whether the upper transfer rubber head 77 has completed the transfer of the pattern on the printing plate 8, thereby ensuring the transfer effect.

[0044] During specific implementation, the placement station equipped with the mold is moved to the bottom of the transfer mechanism in turn through the transmission mechanism, and the transfer mechanism is controlled to rise and fall back and forth through the longitudinal driving mechanism to transfer patterns to multiple molds in turn. Herein, the transfer mechanism can simultaneously complete the pattern transfer between the printing plate and the transfer rubber head and between the transfer rubber head and the mold, shorten the transfer path, reduce the waiting time for the pattern transfer between the printing plate and the mold, and improve the transfer efficiency of the pattern on the mold.

[0045] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A contact lens pattern transfer device, characterized in that: include: A machine base (1), a dye supply mechanism (6) and a transfer mechanism (7), wherein a transmission mechanism (2) is installed on the top of the machine base (1), and a plurality of placement stations (3) are evenly installed on the transmission mechanism (2) for placing molds, a transverse driving mechanism (4) is horizontally fixed above the machine base (1) through at least two groups of vertical arms, a longitudinal driving mechanism (5) is vertically installed at the output end of the transverse driving mechanism (4), and the dye supply mechanism (6) is installed at the output end of the longitudinal driving mechanism (5), and a transfer mechanism (7) is installed at the bottom of the dye supply mechanism (6), and the transfer mechanism (7) has a plurality of transfer rubber heads (77), and the transfer rubber heads (77) are arranged in groups of two, and can simultaneously complete the pattern transfer between the printing plate (8) and the transfer rubber head (77) and the transfer rubber head (77) and the mold.

2. A contact lens pattern transfer device according to claim 1, characterized in that: The dye supply mechanism (6) comprises: an outer shell (61), a mixing chamber body is provided in the upper inner part of the outer shell (61), the longitudinal cross-section of the mixing chamber body is funnel-shaped, a stirring frame (62) is coaxially rotatably provided in the mixing chamber body, and a plurality of feed pipes (63) are provided at the upper end of the outer shell (61), and the feed pipes (63) are connected to dye tanks of different colors.

3. A contact lens pattern transfer device according to claim 2, characterized in that: Any of the feed pipes (63) is connected to a cleaning liquid tank, and a recovery pipe is also provided on one side of the mixing bin.

4. A contact lens pattern transfer device according to claim 2, characterized in that: The outer shell (61) is provided with a mounting groove below the mixing bin body, and the printing plate (8) is inserted into the mounting groove, with the pattern of the printing plate (8) facing downwards.

5. A contact lens pattern transfer device according to claim 4, characterized in that: A fixed plate (65) is fixedly arranged below the printing plate (8), and an avoidance hole is provided on the fixed plate (65) for the transfer rubber head (77) to pass through. A scraper (66) is arranged on the upper end of the fixed plate (65) so as to be tilted and rotatable. The top of the scraper (66) elastically abuts against the printing plate (8) and is used for scraping and leveling the dye on the printing plate (8).

6. A contact lens pattern transfer device according to claim 5, characterized in that: A cotton block (661) is provided on one side of the upper end of the scraper (66) in the direction of rotation, and a scraper strip (662) is provided on the other side. A flow channel is provided in the scraper (66), and the flow channel is respectively connected to the cotton block (661) and the feed hose (64). The feed hose (64) is connected to the mixing bin. A control pump is provided on the feed hose (64) to realize quantitative supply of dye.

7. A contact lens pattern transfer device according to claim 4, characterized in that: The transfer mechanism (7) comprises: A fixed sleeve plate (71) is fixedly mounted on the outer side of the lower portion of the housing (61); A driving shaft (72) passes through the housing (61) and is rotatably mounted on the lower end of the fixed sleeve (71), wherein the driving shaft (72) is driven by an external motor; A fixed cylinder (73) is installed on the driving shaft (72) perpendicular to the axis of the driving shaft (72). A plurality of fixed cylinders (73) are evenly distributed along the axis of the driving shaft (72). A slider (74) is slidably arranged inside the fixed cylinder (73). Fixed rods (75) are fixed at both ends of the slider (74). The outer end of each fixed rod (75) is installed with the transfer rubber head (77). A support spring (76) is elastically arranged between the slider (74) and the inner cavity end surface of the fixed cylinder (73).

8. A contact lens pattern transfer device according to claim 7, characterized in that: A pressure sensing patch is attached between each of the support springs (76) and the slider (74).

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