A lenticular sheet printing fixing fixture

Abstract

This utility model relates to the field of lenticular sheet technology and discloses a lenticular sheet printing fixing fixture, including a fixing fixture base and a lenticular sheet body. The top of the base has a left fixing seat and a right fixing seat on both sides. The bottom end of the pressure block slidably installed in the left fixing seat is in contact with the lenticular sheet body. The drive group includes a servo motor, a threaded rod and a threaded bushing. The guide group includes a sliding strip and a guide fixing component. The flattening mechanism is between the two right fixing seats. The fixing plate is fixed to the top of the guide fixing component. The pressure plate slides between the two and is connected to the fixing plate by a pressure spring. First, the lenticular sheet body is placed on the top of the base. The second fixing screw of the left fixing seat drives the pressure block to initially fix the left end. The servo motor is started, which drives the threaded rod to rotate, causing the sliding strip and the guide fixing component to move to the right. The pressure plate moves with it and is in contact with the lenticular sheet under the action of the pressure spring. The first fixing screw completes the straightening and fixing, ensuring no displacement and no wrinkles during printing.

Description

Technical Field

[0001] This utility model relates to the field of grating sheet technology, specifically a grating sheet printing and fixing fixture. Background Technology

[0002] A lenticular sheet is an optical element with a regular periodic structure. Its surface is covered with equally spaced grooves or patterns, which can realize functions such as image display, anti-counterfeiting labeling, and 3D imaging through light diffraction and refraction. It is widely used in packaging printing, advertising media, anti-counterfeiting technology, optical instruments and other fields. In the production process of lenticular sheets, printing is one of the key processes. It is necessary to accurately print the pattern on the surface of the lenticular sheet. Because the lenticular sheet itself is thin and smooth, and the printing accuracy requirements are extremely high, the displacement or wrinkles of the lenticular sheet will cause the printed pattern to mismatch with the lenticular pattern, affecting the quality and performance of the final product. Therefore, special fixing fixtures are needed to fix it stably to ensure the smooth progress of the printing process. Traditional methods of fixing lenticular sheets often employ manual clamping or simple mechanical pressing structures. Manual clamping is not only inefficient but also struggles to ensure uniform clamping force, easily causing deformation of the lenticular sheet due to excessive force or displacement during printing due to loose clamping. Simple mechanical pressing structures often lack effective guiding and flattening mechanisms, failing to eliminate any wrinkles that may exist in the lenticular sheet itself. Furthermore, they are difficult to maintain a stable clamping state during printing and are susceptible to external vibrations and other factors. These problems directly lead to issues such as pattern misalignment, reduced clarity, and high scrap rates in the printed lenticular sheets, severely restricting the efficiency and quality of lenticular sheet production and failing to meet the demands of modern industry for high-precision and high-stability production. Therefore, we propose a lenticular sheet printing fixing fixture. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a lenticular sheet printing fixing fixture, which solves the aforementioned problems.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a lenticular sheet printing fixing fixture, comprising: The fixture base and the grating sheet body are fixed. The grating sheet body is provided on the top of the fixture base. The left and right fixed seats are respectively fixed on the top two sides of the fixture base. A pressure block is slidably installed inside the left fixed seat. The bottom end of the pressure block is in contact with the grating sheet body. A drive guide mechanism is provided on the fixed fixture base. The drive guide mechanism includes a drive group and a guide group. The drive group consists of a servo motor, a threaded rod, and a threaded bushing. The guide group consists of a sliding bar and a guide fixing member. The two ends of the sliding bar are fixed with guide fixing members, which are provided at the front and rear ends of the fixed fixture base. A flattening mechanism is provided between two right fixed seats. The flattening mechanism consists of a flattening plate, a pressure spring, a fixed plate, and a first fixed screw. The fixed plate is fixed to the top of two guide fixing parts. The flattening plate is provided between the two guide fixing parts and slides in fit. A pressure spring is provided between the flattening plate and the fixed plate.

[0005] Preferably, the fixed clamp base has an internal movable cavity that extends through the front and rear ends of the fixed clamp base. A servo motor is fixedly installed on the left end of the fixed clamp base by bolts. The output shaft of the servo motor extends into the interior of the movable cavity and is connected to a threaded rod. The sliding bar is slidably installed inside the movable cavity.

[0006] Preferably, a threaded bushing is engaged with the inner side of the middle part of the sliding bar, the threaded rod passes through the middle part of the sliding bar and is threadedly engaged with the threaded bushing, and guide fasteners are fixedly installed at both ends of the sliding bar by bolts. The guide fasteners are L-shaped and the top of the guide fasteners is set on the top of the fixed clamp base.

[0007] Preferably, the top end of the guide fixing member is provided with a threaded post, and the two sides of the fixing plate are provided with positioning holes. The threaded post passes through the positioning holes and is fixed to the top end of the guide fixing member with a nut. The guide fixing member is located on the top inner side of the right fixing seat. The fixing plate and the right fixing seat are provided with internal threaded holes. The end of the first fixing screw passes through the right fixing seat and the fixing plate and is threaded into the internal threaded hole.

[0008] Preferably, the top front end of the guide fixing member is provided with a sliding groove, the two ends of the pressure plate are provided with sliding blocks, the pressure plate is disposed between the two guide fixing members, and the sliding blocks are installed inside the sliding groove and slidably engaged, wherein the end of the first fixing screw is attached to the top of the pressure plate, and the two sides of the pressure plate are inclined upward.

[0009] Preferably, a plurality of equidistant washers are fixed to the top of the pressure plate and the bottom of the fixing plate, respectively. The washers at the top of the pressure plate are provided with a pressure spring, and the other end of the pressure spring is located inside the washer at the bottom of the fixing plate.

[0010] Preferably, the back of the pressure block is provided with a guide ring, which is slidably installed inside the left fixed seat. The end of the second fixing screw passes through the top of the left fixed seat and is threadedly engaged. The end of the second fixing screw is rotatably engaged with the top of the guide ring. The bottom of the pressure block is provided with a rubber pad, and the rubber pad at the bottom of the pressure block and the bottom of the pressure plate are tightly fitted with the grating sheet body.

[0011] Compared with the prior art, the present invention provides a lenticular sheet printing fixing fixture, which has the following beneficial effects: This lenticular sheet printing fixture, through the pressure block in the left fixing seat and the second fixing screw, can quickly achieve initial fixation of the left end of the lenticular sheet body, and the bottom rubber pad can prevent clamping damage. In the drive guide mechanism, the servo motor drives the threaded rod and threaded bushing to drive the sliding bar to move the guide fixing component smoothly, ensuring accurate adjustment of the flattening mechanism position and improving the convenience of operation. The pressure plate of the flattening mechanism, through the cooperation of the sliding block and the sliding groove of the guide fixing component, combined with the elastic force of the pressure spring, can apply continuous and uniform pressure to the lenticular sheet. With the first fixing screw, it can enhance the flattening effect and effectively eliminate wrinkles. The bidirectional clamping force formed by the left and right fixing seats can ensure that the lenticular sheet body does not shift during the printing process, greatly improving the printing quality and stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 This is a schematic diagram showing the structural breakdown of this utility model; Figure 4 This is a schematic diagram of the structure of the fixing clamp base of this utility model.

[0013] In the diagram: 1. Fixed clamp base; 2. Servo motor; 3. Threaded rod; 4. Sliding bar; 5. Threaded bushing; 6. Grating sheet body; 7. Guide fixing component; 8. Pressure plate; 9. Compression spring; 10. Fixing plate; 11. First fixing screw; 12. Compression block; 13. Second fixing screw; 14. Sliding block; 15. Sliding groove; 16. Movable cavity; 17. Left fixed seat; 18. Right fixed seat. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 A lenticular sheet printing fixing fixture, comprising: The fixture base 1 and the grating sheet body 6 are fixed. The grating sheet body 6 is provided on the top of the fixture base 1. The left fixing seat 17 and the right fixing seat 18 are symmetrically distributed on the top two sides of the fixture base 1, respectively. The pressure block 12 is slidably installed inside the left fixing seat 17. The bottom end of the pressure block 12 is in contact with the grating sheet body 6. The drive guide mechanism is set on the fixed fixture base 1. The drive guide mechanism includes a drive group and a guide group. The drive group consists of a servo motor 2, a threaded rod 3 and a threaded bushing 5. The guide group consists of a sliding bar 4 and a guide fixing member 7. The two ends of the sliding bar 4 are fixed with guide fixing members 7. The guide fixing members 7 are set at the front and rear ends of the fixed fixture base 1. A flattening mechanism is provided between two right fixed seats 18. The flattening mechanism consists of a flattening plate 8, a pressure spring 9, a fixing plate 10 and a first fixing screw 11. The fixing plate 10 is fixed to the top of the two guide fixing parts 7. The flattening plate 8 is provided between the two guide fixing parts 7 and slides between them. A pressure spring 9 is provided between the flattening plate 8 and the fixing plate 10.

[0016] Furthermore, the fixed clamp base 1 has an internal movable cavity 16 that extends through the front and rear ends of the fixed clamp base 1. A servo motor 2 is fixedly mounted on the left end of the fixed clamp base 1 by bolts. The output shaft of the servo motor 2 extends into the movable cavity 16 and is connected to a threaded rod 3. A sliding bar 4 is slidably mounted inside the movable cavity 16, providing a mounting base for the drive guide mechanism. This allows the servo motor 2 to drive the threaded rod 3 to operate stably within the movable cavity 16, and the sliding bar 4 can slide along the movable cavity 16, ensuring the normal operation of the drive guide mechanism.

[0017] Furthermore, a threaded bushing 5 is snapped into the inner side of the middle part of the sliding bar 4, and the threaded rod 3 passes through the middle part of the sliding bar 4 and is threadedly engaged with the threaded bushing 5. Guide fixing parts 7 are fixedly installed at both ends of the sliding bar 4 by bolts. The guide fixing parts 7 are L-shaped, and the top of the guide fixing parts 7 is set on the top of the fixed clamp base 1, so that the sliding bar 4 and the guide fixing parts 7 can be moved when the threaded rod 3 rotates. The top of the L-shaped guide fixing parts 7 is located on the top of the fixed clamp base 1, providing installation and movement support for the flattening mechanism.

[0018] Furthermore, the top of the guide fixing member 7 is provided with a threaded post, and the two sides of the fixing plate 10 are provided with positioning holes. The threaded post passes through the positioning holes and is fixed to the top of the guide fixing member 7 with a nut. The guide fixing member 7 is located on the top inner side of the right fixing seat 18. The fixing plate 10 and the right fixing seat 18 are provided with internal threaded holes. The end of the first fixing screw 11 passes through the right fixing seat 18 and the fixing plate 10 and is threadedly engaged with the internal threaded hole, which not only fixes the fixing plate 10, but also allows the first fixing screw 11 to apply pressure to the pressure plate 8, thereby enhancing the flattening effect.

[0019] Furthermore, a sliding groove 15 is provided at the top front end of the guide fixing member 7, and sliding blocks 14 are provided at both ends of the pressure plate 8. The pressure plate 8 is set between the two guide fixing members 7, and the sliding blocks 14 are installed inside the sliding groove 15 and slide in cooperation. The end of the first fixing screw 11 is in contact with the top of the pressure plate 8, and the two sides of the pressure plate 8 are inclined upwards, which ensures the stability of the pressure plate 8 when it moves with the guide fixing member 7. The contact between the first fixing screw 11 and the pressure plate 8 and the inclined design of the pressure plate 8 are conducive to effectively flattening the grating sheet body 6.

[0020] Furthermore, multiple equidistant washers are fixed to the top of the pressing plate 8 and the bottom of the fixing plate 10, respectively. The washers at the top of the pressing plate 8 are equipped with pressure springs 9, and the other end of the pressure springs 9 is located inside the washers at the bottom of the fixing plate 10, forming an elastic pressure structure. This allows the pressing plate 8 to continuously adhere to the grating sheet body 6, enhancing the stability and effectiveness of the flattening.

[0021] Furthermore, a guide ring is provided on the back of the pressure block 12. The guide ring is slidably installed inside the left fixed seat 17. The end of the second fixing screw 13 passes through the top of the left fixed seat 17 and is threaded. The end of the second fixing screw 13 is rotatably engaged with the top of the guide ring. A rubber pad is provided at the bottom of the pressure block 12. The rubber pad at the bottom of the pressure block 12 and the bottom of the pressure plate 8 are tightly fitted with the grating sheet body 6, which realizes the stable fixation of the left end of the grating sheet body 6 and avoids clamping damage.

[0022] Structural Description: Fixed clamp base 1: It is the basic structure of the entire clamp. The grating sheet body 6 is placed on the top, and there are left fixed seat 17 and right fixed seat 18 on both sides. The internal movable cavity 16 provides installation space for the drive guide mechanism. Servo motor 2: Installed on the left end of the fixed fixture base 1, the output shaft is connected to the threaded rod 3, which provides power to drive the guide mechanism and drives the threaded rod 3 to rotate so as to realize the movement of the parts; Threaded rod 3: Located in the movable cavity 16, it cooperates with the threaded bushing 5 of the sliding bar 4. It rotates under the drive of the servo motor 2, which drives the sliding bar 4 and related components to move. Sliding bar 4: It is slidably installed in the movable cavity 16, with a threaded bushing 5 in the middle and guide fixing parts 7 at both ends. It moves through threaded transmission and drives the guide fixing parts 7 to move synchronously. Threaded bushing 5: It is snapped into the middle of the sliding bar 4 and threadedly engaged with the threaded rod 3 to convert the rotational motion of the threaded rod 3 into the linear motion of the sliding bar 4; The lenticular sheet body 6 is placed on top of the fixed fixture base 1 and is the printing object. It is fixed by the pressure block 12 and the pressure plate 8 to ensure stability and no displacement during printing. Guide fixing component 7: L-shaped, fixed at both ends of sliding bar 4, with sliding groove 15 and threaded post at the top, supporting the flattening mechanism and guiding its smooth movement; Pressing plate 8: Located between two guide fixing parts 7, with sliding blocks 14 at both ends, and the bottom end is attached to the grating sheet. It is flattened during movement and is inclined on both sides. Pressure spring 9: Installed between the washers of the pressure plate 8 and the fixing plate 10, it provides elastic pressure so that the pressure plate 8 continuously adheres to the grating sheet, thereby enhancing the flattening effect; Fixed plate 10: It is fixed to the threaded post of the guide fixing member 7 by a nut, and a compression spring 9 is provided between it and the pressure plate 8. The spring is fixed and provides support for the first fixing screw 11. First fixing screw 11: passes through right fixing seat 18 and fixing plate 10, and its end is attached to pressing plate 8. Rotation can adjust the pressure on pressing plate 8 and enhance the flattening effect. Pressure block 12: It is slidably installed on the left fixed seat 17, with a rubber pad at the bottom end, and fits against the grating sheet body 6. It is fixed at the left end under the action of the second fixing screw 13. The second fixing screw 13 is threaded into the left fixing seat 17 and its end is connected to the guide ring of the pressure block 12. Rotation can drive the pressure block 12 to move up and down to adjust the fixing force. Sliding block 14: Located at both ends of the pressure plate 8, installed in the sliding groove 15 and slidably engaged, to ensure that the pressure plate 8 moves smoothly and accurately with the guide fixing part 7; Sliding groove 15: It is formed at the top front end of the guide fixing part 7 and cooperates with the sliding block 14 to provide guidance for the movement of the pressure plate 8 and ensure its stable movement trajectory; Movable cavity 16: runs through the front and rear ends of the fixed clamp base 1, and is equipped with threaded rod 3 and sliding bar 4, providing installation and movement space for the components of the drive guide mechanism; Left fixing seat 17: Fixed on the top left side of the fixing fixture base 1, with the pressure block 12 slidably installed inside, which works with the second fixing screw 13 to fix the left end of the grating sheet; Right fixing seat 18: Fixed on the top right side of the fixing fixture base 1, both it and the fixing plate 10 have internal threaded holes, providing installation fit for the first fixing screw 11 and assisting in flattening.

[0023] Working principle: First, the grating sheet is initially positioned by placing the grating sheet body 6 on top of the fixing fixture base 1. Then, the fixing component on the left fixing seat 17 is operated. The second fixing screw 13 is rotated, and its end moves downward through the threaded engagement with the left fixing seat 17, causing the guide ring on the back to slide along the inside of the left fixing seat 17. This causes the pressure block 12 to move downward synchronously. When the rubber pad at the bottom of the pressure block 12 is tightly fitted with the upper surface of the left end of the grating sheet body 6, the initial fixing of the left end of the grating sheet is completed. At this point, the right end of the grating sheet body 6 is on the side of the pressure plate 8 closest to the left fixing seat 17, and the pressure plate 8... The bottom end naturally contacts the surface of the grating sheet. Next, the drive guide mechanism is activated for position adjustment. After the servo motor 2 is powered on, the output shaft drives the threaded rod 3 inside the movable cavity 16 to rotate. The threaded rod 3 and the threaded bushing 5 in the middle of the sliding bar 4 form a threaded transmission, causing the sliding bar 4 to slide to the right along the movable cavity 16. The L-shaped guide fixing parts 7 at both ends of the sliding bar 4 move synchronously with it. Since the top of the guide fixing part 7 is located above the fixed clamp base 1, and the flattening mechanism is installed between the two guide fixing parts 7, the pressing plate 8 will move to the right with the guide fixing parts 7. During this process, the sliding blocks 14 on both sides of the pressing plate 8 move along the guide fixing parts 7. The slide plate 8 smoothly slides into the sliding groove 15 at the top of the fixing member 7, ensuring precise movement trajectory. During the translation process, the flattening mechanism simultaneously completes the straightening operation of the grating sheet. The two sides of the pressure plate 8 are inclined upwards, and its bottom end is always in contact with the grating sheet body 6 under the pre-pressure of the pressure spring 9. The two ends of the pressure spring 9 are fixed to the washers of the pressure plate 8 and the fixing plate 10, respectively. The fixing plate 10 is fixed to the threaded post of the guide fixing member 7 by nuts, forming a stable elastic pressure structure. When the guide fixing member 7 moves to the right, the pressure plate 8 will apply continuous pressure to the surface of the grating sheet, gradually straightening the uneven parts. At this time, The first fixing screw 11 can adjust the pressure on the pressure plate 8 by rotation. Its end passes through the internal threaded hole of the right fixing seat 18 and the fixing plate 10 and fits against the top of the pressure plate 8 to further enhance the flattening effect. When the sliding bar 4 drives the guide fixing part 7 to move to the pressure plate 8 between the two right fixing seats 18, the grating sheet body 6 has been completely straightened and is in a tensioned state. At this time, the pressure block 12 of the left fixing seat 17 and the pressure plate 8 on the right fixing seat 18 side form a bidirectional clamping force. The rubber pad and the bottom of the pressure plate together ensure that the grating sheet body 6 has no displacement or wrinkles during the printing process, and finally achieves a stable and reliable fixing effect.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grating sheet printing fixture, characterized by, The fixed fixture base (1) and the grating sheet body (6) are provided on the top of the fixed fixture base (1). The left fixed seat (17) and the right fixed seat (18) are respectively fixed on the top two sides of the fixed fixture base (1). The pressure block (12) is slidably installed inside the left fixed seat (17). The bottom end of the pressure block (12) is in contact with the grating sheet body (6). A drive guide mechanism is provided on the fixed fixture base (1). The drive guide mechanism includes a drive group and a guide group. The drive group consists of a servo motor (2), a threaded rod (3) and a threaded bushing (5). The guide group consists of a sliding bar (4) and a guide fixing member (7). The two ends of the sliding bar (4) are fixed with guide fixing members (7). The guide fixing members (7) are provided at the front and rear ends of the fixed fixture base (1). A flattening mechanism is provided between two right fixed seats (18). The flattening mechanism consists of a flat plate (8), a pressure spring (9), a fixed plate (10) and a first fixed screw (11). The fixed plate (10) is fixed to the top of two guide fixing parts (7). The flat plate (8) is provided between the two guide fixing parts (7) and slides in fit. A pressure spring (9) is provided between the flat plate (8) and the fixed plate (10).

2. The grating sheet printing fixture according to claim 1, wherein The fixed clamp base (1) has an open movable cavity (16) inside. The movable cavity (16) passes through the front and rear ends of the fixed clamp base (1). The left end of the fixed clamp base (1) is fixedly installed with a servo motor (2) by bolts. The output shaft of the servo motor (2) extends into the movable cavity (16) and is connected to a threaded rod (3). The sliding bar (4) is slidably installed inside the movable cavity (16).

3. A grating sheet printing fixture according to claim 2, wherein A threaded bushing (5) is snapped into the inner side of the middle part of the sliding bar (4). The threaded rod (3) passes through the middle part of the sliding bar (4) and is threadedly engaged with the threaded bushing (5). Guide fixing parts (7) are fixedly installed at both ends of the sliding bar (4) by bolts. The guide fixing parts (7) are L-shaped, and the top of the guide fixing parts (7) is set on the top of the fixed clamp base (1).

4. The lenticular sheet printing fixing fixture according to claim 1, characterized in that, The top of the guide fixing member (7) is provided with a threaded post, and the two sides of the fixing plate (10) are provided with positioning holes. The threaded post passes through the positioning holes and is fixed to the top of the guide fixing member (7) with a nut. The guide fixing member (7) is located on the top inner side of the right fixing seat (18). The fixing plate (10) and the right fixing seat (18) are provided with internal threaded holes. The end of the first fixing screw (11) passes through the right fixing seat (18) and the fixing plate (10) and is threadedly engaged with the internal threaded hole.

5. A lenticular sheet printing fixing fixture according to claim 4, characterized in that, The top front end of the guide fixing member (7) is provided with a sliding groove (15), and the two ends of the pressure plate (8) are provided with sliding blocks (14). The pressure plate (8) is set between the two guide fixing members (7), and the sliding blocks (14) are installed inside the sliding groove (15) and slide in cooperation. The end of the first fixing screw (11) is in contact with the top of the pressure plate (8), and the two sides of the pressure plate (8) are inclined upward.

6. A lenticular sheet printing fixing fixture according to claim 5, characterized in that, The top of the pressure plate (8) and the bottom of the fixing plate (10) are respectively fixed with a plurality of equidistant washers. The washers at the top of the pressure plate (8) are provided with pressure springs (9), and the other end of the pressure springs (9) is located inside the washers at the bottom of the fixing plate (10).

7. The lenticular sheet printing fixing fixture according to claim 1, characterized in that, The back of the pressure block (12) is provided with a guide ring, which is slidably installed inside the left fixed seat (17). The left fixed seat (17) is threaded with a second fixing screw (13), the end of which is rotatably engaged with the top of the guide ring. The bottom of the pressure block (12) is provided with a rubber pad, and the rubber pad at the bottom of the pressure block (12) is in close contact with the bottom of the pressure plate (8) and the grating sheet body (6).

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