Protective mask lens cutting and edge trimming machine

Abstract

The utility model provides a protective mask lens cutting and edge trimming machine. Relates to the technical field of lens trimming. The protective mask lens cutting and trimming machine comprises a U-shaped outer frame and a cutting unit, a U-shaped bearing seat is fixedly mounted on the inner wall of the bottom of the U-shaped outer frame, a two-way screw is rotatably mounted in the U-shaped bearing seat, and two adjusting plates are mounted on the two-way screw in a threaded mode; the tops of the two adjusting plates are both fixedly provided with first through stand columns, the tops of the two first through stand columns are both slidably provided with adjusting square columns, the tops of the two adjusting square columns are both fixedly provided with positioning round seats, and the tops of the two positioning round seats are both fixedly provided with steering heads; and side opening surrounding frames are fixedly mounted at the top ends of the two steering heads. The clamping direction can be adjusted according to the bending angle of the lens, and the defective rate of cutting and trimming is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lens trimming technology, specifically a protective mask lens cutting and trimming machine. Background Technology

[0002] A protective face shield is a professional piece of equipment used to protect the face and neck from physical, chemical, or biological hazards. Typically, such face shields have a large plastic lens. The lens is usually directly molded using injection molding, and a small portion of the top of the molded lens is left as allowance for subsequent processing. In subsequent processing, the most common tool is an edge trimming machine, which cuts off the allowance at the top of the lens and the end from the injection molding process to trim the lens to the required size.

[0003] However, it has been found that commonly used cutting and trimming machines have problems when used. Because the lenses on protective masks of different specifications have different degrees of curvature, and the chucks used to hold the lenses on the trimming machine are usually in a fixed position, when the machine holds lenses with different curvature angles, the angle between the holding part and the lens is large, which can easily damage the lens. It can also easily cause the lens to shift during the cutting and trimming process, resulting in changes in the cutting position and increasing the defect rate.

[0004] Therefore, it is necessary to provide a new protective mask lens cutting and trimming machine to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a protective mask lens cutting and trimming machine that can adjust the clamping direction according to the lens curvature angle, thereby reducing the defect rate of cutting and trimming.

[0006] To solve the above-mentioned technical problems, the protective mask lens cutting and trimming machine provided by this utility model includes: an inverted outer frame and a cutting unit. A U-shaped support is fixedly installed on the bottom inner wall of the inverted outer frame. A bidirectional screw is rotatably installed inside the U-shaped support. Two adjusting plates are threaded on the bidirectional screw. A first through column is fixedly installed on the top of each of the two adjusting plates. An adjusting square column is slidably installed on the top of each of the two first through columns. A positioning round seat is fixedly installed on the top of each of the two adjusting square columns. A turning head is fixedly installed on the top of each of the two positioning round seats. A side opening frame is fixedly installed on the top of each of the two turning heads. Two telescopic cylinders are fixedly installed inside each of the two side opening frames. Clamping plates are fixedly installed on the output shafts of the four telescopic cylinders. The four clamping plates are paired and each clamping plate is fixedly installed with a rubber pad. A displacement unit is provided on the top of the inverted outer frame to drive the cutting unit to change position.

[0007] Preferably, a semi-circular angle ruler is fixedly installed on the top of each of the two positioning round seats, and the two turning heads do not contact the corresponding semi-circular angle rulers. Guide pins are fixedly installed on the outer wall of each of the two side opening frames away from the clamping piece. The two guide pins are respectively adapted to the two semi-circular angle rulers. External folding ears are fixedly installed on the side of each of the two positioning round seats near the clamping piece. A first set screw is threaded onto each of the two external folding ears, and the ends of the two first set screws respectively abut against the two turning heads.

[0008] Preferably, each of the two adjusting columns has multiple adjusting slots on one side, and a connecting plate is fixedly installed on the outer wall of one side of each of the two first through columns. Each of the two connecting plates is threaded with a half-threaded bolt, and one end of each half-threaded bolt extends into the corresponding adjusting slot.

[0009] Preferably, one end of the bidirectional screw extends to one side of the U-shaped support and is fixedly mounted with a handwheel, and a protrusion is fixedly mounted on one side of the U-shaped support. A second set screw is threaded onto the protrusion, and the end of the second set screw abuts against the bidirectional screw. Two guide rods are fixedly mounted inside the U-shaped support, and the two guide rods pass through the two adjusting plates and are slidably connected to the two adjusting plates.

[0010] Preferably, a sharing rod is fixedly installed inside each of the two side opening frames, and each of the two sharing rods passes through the corresponding clamping piece and is slidably connected to the corresponding clamping piece.

[0011] Preferably, the displacement unit includes a transverse rodless cylinder, which is fixedly installed on the top inner wall of the C-shaped outer frame. A longitudinal rodless cylinder is fixedly installed on the slider of the transverse rodless cylinder. A rectangular frame is fixedly installed on the slider of the longitudinal rodless cylinder. A partition is fixedly installed inside the rectangular frame. A vertical screw is rotatably installed on the partition. A second through-post is threaded onto the vertical screw. The bottom of the second through-post extends to the bottom of the rectangular frame and is slidably connected to the bottom of the rectangular frame. The bottom of the second through-post is fixedly connected to the cutting unit.

[0012] Preferably, a third set screw is threaded onto one side of the rectangular frame sleeve, and the end of the third set screw abuts against the vertical screw.

[0013] Compared with related technologies, the protective mask lens cutting and trimming machine provided by this utility model has the following beneficial effects:

[0014] This invention features a rotatable steering head on a positioning base, allowing adjustment of the clamping direction of the clamping plate. This enables adjustment of the clamping position for lenses with varying degrees of curvature. The addition of rubber pads provides a protective clamping effect, reducing the likelihood of lens damage and lowering the defect rate. Furthermore, the design of the bidirectional screw and adjusting plate, along with the adjustable adjusting column and cutting unit, allows for clamping and trimming of lenses of different heights and widths, thus expanding its applicability. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the protective mask lens cutting and trimming machine provided by this utility model;

[0016] Figure 2 This is a frontal planar structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the connection structure between the U-shaped support and the bidirectional screw in this utility model;

[0018] Figure 4 This is a schematic diagram of the assembly of the first through column and the adjusting square column in this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the positioning round seat and the steering head in this utility model;

[0020] Figure 6 This is a schematic diagram of the connection structure between the telescopic cylinder and the clamping plate in this utility model;

[0021] Figure 7 This is an assembly diagram of the transverse rodless cylinder and the longitudinal rodless cylinder in this utility model.

[0022] The following are the labeling elements in the diagram: 1. C-shaped outer frame; 2. U-shaped bearing seat; 3. Bidirectional screw; 4. Adjusting plate; 5. First through column; 6. Adjusting square column; 7. Positioning round seat; 8. Turning head; 9. Side opening frame; 10. Telescopic cylinder; 11. Clamping plate; 12. Semicircular angle gauge; 13. Guide pin; 14. Adjusting slot; 15. Connecting folding plate; 16. Semi-threaded bolt; 17. Cutting unit; 18. Horizontal rodless cylinder; 19. Longitudinal rodless cylinder; 20. Rectangular frame; 21. Partition plate; 22. Vertical screw; 23. Second through column. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1-7The protective mask lens cutting and trimming machine includes: a U-shaped outer frame 1 and a cutting unit 17. The cutting unit 17 is a common cutting device on the market, typically consisting of a drive motor and a cutting disc; therefore, as common knowledge, it will not be elaborated upon here. A U-shaped support seat 2 is fixedly installed on the bottom inner wall of the U-shaped outer frame 1. A bidirectional screw 3 is rotatably installed inside the U-shaped support seat 2. Two adjusting plates 4 are threaded onto the bidirectional screw 3. To ensure stable longitudinal linear movement of the adjusting plates 4, two guide rods are fixedly installed inside the U-shaped support seat 2. The two guide rods pass through the two adjusting plates 4 and are slidably connected to them. A first through-column 5 is fixedly installed on the top of each of the two adjusting plates 4. An adjusting square column 6 is slidably installed on the top of each of the two first through-column 5. A positioning round seat 7 is fixedly installed on the top of each of the two adjusting square columns 6. The device is equipped with a steering head 8, and two side frames 9 are fixedly installed at the top of each steering head 8. Two telescopic cylinders 10 are fixedly installed inside each side frame 9. Clamping plates 11 are fixedly installed on the output shafts of the four telescopic cylinders 10. The four clamping plates 11 are paired and each clamping plate 11 is fixedly fitted with a rubber pad to improve the clamping protection of the lens. Through the design of the positioning round seat 7 and the steering head 8, the clamping position of the clamping plate 11 can be adjusted to best adapt to the curvature of the lens and reduce the risk of damaging the lens. In addition, in order to ensure the linear movement of the clamping plate 11, a sharing rod is fixedly installed inside each side frame 9. The two sharing rods pass through the corresponding clamping plate 11 and slide to connect with the corresponding clamping plate 11. A displacement unit is provided at the top of the U-shaped outer frame 1, which can be used to drive the cutting unit 17 to change position.

[0025] In the above method, in order to accurately adjust the clamping position of the clamping piece 11, a semi-circular angle ruler 12 is fixedly installed on the top of each of the two positioning round seats 7, and the two turning heads 8 do not contact the corresponding semi-circular angle ruler 12. Guide pins 13 are fixedly installed on the outer wall of the side of the two side opening frames 9 away from the clamping piece 11. The two guide pins 13 are respectively matched with the two semi-circular angle rulers 12 and play a guiding role. External folding ears are fixedly installed on the side of the two positioning round seats 7 near the clamping piece 11. The two external folding ears are threaded with first set screws. The ends of the two first set screws respectively abut against the two turning heads 8. The abutment between the two can ensure that the turning heads 8 will not easily deflect after the clamping piece 11 is adjusted to the specified angle position.

[0026] In this method, in order to adjust the clamping height of the clamping piece 11 according to the height of the lens, multiple adjustment slots 14 are provided on one side of each of the two adjusting square columns 6. Connecting folding plates 15 are fixedly installed on the outer wall of one side of each of the two first through columns 5. Half-threaded bolts 16 are threaded on each of the two connecting folding plates 15. One end of each half-threaded bolt 16 extends into the corresponding adjustment slot 14. The height of the clamping piece 11 can be freely adjusted by turning the half-threaded bolts 16. Thus, when clamping and cutting lenses of different heights, the clamping piece 11 can be adjusted to a position slightly lower than the top of the lens for clamping. On the one hand, it can be used for lenses of different heights. On the other hand, by clamping at a position slightly lower than the top of the lens, the stability during cutting can be ensured.

[0027] In this method, in order to facilitate the rotation of the bidirectional screw 3, one end of the bidirectional screw 3 extends to one side of the U-shaped support 2 and is fixedly mounted with a handwheel. A protrusion is fixedly mounted on one side of the U-shaped support 2, and a second set screw is threaded on it. The end of the second set screw abuts against the bidirectional screw 3. By using the abutment between the two, the bidirectional screw 3 will not easily rotate.

[0028] In this method, in order to enable the cutting unit 17 to adapt to the height of the lens and to cut the top of the lens comprehensively, the displacement unit includes a transverse rodless cylinder 18, which is fixedly installed on the top inner wall of the C-shaped outer frame 1. A longitudinal rodless cylinder 19 is fixedly installed on the slider of the transverse rodless cylinder 18, and a rectangular frame sleeve 20 is fixedly installed on the slider of the longitudinal rodless cylinder 19. A partition 21 is fixedly installed inside the rectangular frame sleeve 20, and a vertical screw 22 is rotatably installed on the partition 21. A second through column 23 is threaded on the vertical screw 22. The bottom of the second through column 23 extends to the bottom of the rectangular frame sleeve 20 and slides to connect with the bottom of the rectangular frame sleeve 20. The bottom of the second through column 23 is fixedly connected to the cutting unit 17. Furthermore, a third set screw is threaded on one side of the rectangular frame sleeve 20, and its end abuts against the vertical screw 22.

[0029] The working principle of the protective mask lens cutting and trimming machine provided by this utility model is as follows:

[0030] When cutting and trimming the lens, first adjust the clamping position of the two side frame brackets 9 according to the curvature of the lens to be processed. When adjusting, first turn the two first set screws in the opposite direction to separate the two first set screws from the corresponding turning head 8. Then, first turn one of the side frame brackets 9. At this time, observe the direction of the guide pin 13 on the semi-circular angle ruler 12. When it points to the corresponding angle, tighten the corresponding first set screw. Then, adjust the other side frame bracket 9 to the specified angle position in the same way.

[0031] Subsequently, adjust the height of the clamping piece 11 according to the height of the lens to be processed, so that the clamping piece 11 can clamp the lens at a height slightly lower than the cutting part, thereby improving the cutting stability. When adjusting, first rotate one of the half-tooth bolts 16 in the reverse direction to pull it out of the corresponding adjustment slot 14, then move the corresponding adjustment column 6 up and down to adjust it to the specified height, and then rotate the half-tooth bolt 16 in the forward direction to bring it into the corresponding adjustment slot 14 to complete the adjustment. Then, adjust the other set of two clamping pieces 11 to the specified height position in the same way.

[0032] Then adjust the distance between the two side opening brackets 9 according to the width of the lens. When adjusting, rotate the second set screw in the opposite direction to separate it from the double-acting screw 3, and then rotate the handwheel. At this time, the distance between the two adjusting plates 4 will change, and finally the two side opening brackets 9 will be adjusted to the required position.

[0033] Next, take out the bent lens and place it on the bottom inner wall of the inverted outer frame 1, so that its top is parallel to the bottom inner wall of the inverted outer frame 1. Then insert its two sides between the two sets of clamping plates 11 respectively. Then, start the output shaft of the four telescopic cylinders 10 to extend, and the corresponding two clamping plates 11 move closer to each other, finally clamping the two sides of the lens.

[0034] Then adjust the cutting height of the cutting unit 17. When adjusting, first reverse the third set screw to separate it from the vertical screw 22. Then rotate the vertical screw 22. Through the threaded engagement between it and the second through column 23, the cutting unit 17 will adjust its height. At this time, observe the positional relationship between the cutting unit 17 and the lens. After it is adjusted to the appropriate cutting and trimming height, tighten the third set screw again.

[0035] Next, the cutting unit 17 is started first, followed by the longitudinal rodless cylinder 19, which moves the cutting unit 17 gradually toward the lens. When it contacts the lens, the cutting and trimming work begins. After a set of longitudinal sections of the lens is cut, the transverse rodless cylinder 18 is started. Its slider moves the longitudinal rodless cylinder 19 a short distance. Then the transverse rodless cylinder 18 is closed, and the longitudinal rodless cylinder 19 is started again to cut another set of longitudinal sections of the lens. The above steps are repeated until the cutting and trimming work of the lens is completed.

[0036] Compared with related technologies, the protective mask lens cutting and trimming machine provided by this utility model has the following beneficial effects:

[0037] This utility model provides a protective mask lens cutting and trimming machine. By setting a rotatable steering head 8 on the positioning round seat 7, the clamping direction of the clamping piece 11 can be adjusted, thereby adjusting the clamping position for lenses with different degrees of curvature. In addition, the setting of rubber soft pads enables the lens to obtain a protective clamping effect, reducing the possibility of the lens being damaged and reducing the defect rate of finished products. Furthermore, the design of the bidirectional screw 3 and the adjusting plate 4, as well as the adjustable adjusting column 6 and the adjustable cutting unit 17, can perform clamping and trimming work for lenses of different heights and widths, thus improving the applicability.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A protective face mask lens cutting and trimming machine, comprising an inverted outer frame and a cutting unit, characterized in that, A U-shaped support is fixedly installed on the bottom inner wall of the C-shaped outer frame. A bidirectional screw is rotatably installed inside the U-shaped support. Two adjusting plates are threaded onto the bidirectional screw. A first through column is fixedly installed on the top of each of the two adjusting plates. An adjusting square column is slidably installed on the top of each of the two first through columns. A positioning round seat is fixedly installed on the top of each of the two adjusting square columns. A steering head is fixedly installed on the top of each of the two positioning round seats. A side opening frame is fixedly installed on the top of each of the two steering heads. Two telescopic cylinders are fixedly installed inside each of the two side opening frames. Clamping plates are fixedly installed on the output shafts of each of the four telescopic cylinders. The four clamping plates are paired and each of the four clamping plates is fixedly installed with a rubber pad. A displacement unit is provided on the top of the C-shaped outer frame to drive the cutting unit to change and adjust its position.

2. The protective mask lens cutting and trimming machine according to claim 1, characterized in that, A semi-circular angle ruler is fixedly installed on the top of each of the two positioning round seats, and the two turning heads do not contact the corresponding semi-circular angle rulers. Guide pins are fixedly installed on the outer wall of each of the two side opening frames away from the clamping piece. The two guide pins are respectively adapted to the two semi-circular angle rulers. External folding ears are fixedly installed on the side of each of the two positioning round seats near the clamping piece. A first set screw is threaded on each of the two external folding ears, and the ends of the two first set screws respectively abut against the two turning heads.

3. The protective mask lens cutting and trimming machine according to claim 1, characterized in that, Multiple adjustment slots are provided on one side of each of the two adjustment columns. A connecting folding plate is fixedly installed on the outer wall of one side of each of the two first through columns. A half-threaded bolt is threaded onto each of the two connecting folding plates, and one end of each half-threaded bolt extends into the corresponding adjustment slot.

4. The protective mask lens cutting and trimming machine according to claim 1, characterized in that, One end of the bidirectional screw extends to one side of the U-shaped support and is fixedly mounted with a handwheel. A protrusion is fixedly mounted on one side of the U-shaped support, and a second set screw is threaded onto the protrusion. The end of the second set screw abuts against the bidirectional screw. Two guide rods are fixedly mounted inside the U-shaped support. The two guide rods pass through the two adjusting plates and are slidably connected to the two adjusting plates.

5. The protective mask lens cutting and trimming machine according to claim 1, characterized in that, Each of the two side opening frames is fixedly installed with a sharing rod, and each of the two sharing rods passes through the corresponding clamping piece and is slidably connected to the corresponding clamping piece.

6. The protective mask lens cutting and trimming machine according to claim 1, characterized in that, The displacement unit includes a transverse rodless cylinder, which is fixedly installed on the top inner wall of the C-shaped outer frame. A longitudinal rodless cylinder is fixedly installed on the slider of the transverse rodless cylinder. A rectangular frame is fixedly installed on the slider of the longitudinal rodless cylinder. A partition is fixedly installed inside the rectangular frame. A vertical screw is rotatably installed on the partition. A second through-post is threaded on the vertical screw. The bottom of the second through-post extends to the bottom of the rectangular frame and is slidably connected to the bottom of the rectangular frame. The bottom of the second through-post is fixedly connected to the cutting unit.

7. The protective mask lens cutting and trimming machine according to claim 6, characterized in that, A third set screw is threaded onto one side of the rectangular frame sleeve, and the end of the third set screw abuts against the vertical screw.

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