A high-precision pressure holding device

Abstract

This invention discloses a high-precision pressure-holding device, including a base and a pressure-holding component. A sliding shell is slidably disposed on the base, and a positioning rod is disposed on the sliding shell. A contact end is fixedly disposed on the positioning rod. A support plate is fixedly disposed on the sliding shell, and a sealing plate is slidably disposed on the support plate. The sealing plate is adapted to a sliding groove reserved on the base. The sliding groove is used to provide sliding space for the sliding shell. A first inclined surface is provided on the sealing plate, and the sealing plate abuts against the base through the first inclined surface. When the positioning rod slides to position and fix the workpiece, if the workpiece is large, the workpiece is fixed before the positioning rod exceeds the sliding groove. The sealing plate seals the sliding groove, which can place the workpiece in the position above the sliding groove, avoiding deformation or damage due to lack of support at this position during the pressure-holding process.

Description

Technical Field

[0001] This invention relates to the field of bonding equipment technology, and more specifically to a high-precision pressure-holding device. Background Technology

[0002] Pressure holding devices are widely used in industrial manufacturing, especially in scenarios where high bonding accuracy and adhesion strength are required. Through the coordinated control of "pressure + temperature + time", they solve problems such as adhesion strength, sealing, and accuracy of different materials and structures during the bonding process. They are a key link in ensuring product reliability in high-end manufacturing. In the automotive and wearable full-lamination industries, such as the full lamination of automotive displays with backlight modules and touch screens, pressure holding devices apply uniform pressure to ensure that OCA optical adhesive or liquid adhesive is fully cured, eliminating air bubbles and improving adhesion strength.

[0003] In pressure holding processes that do not rely on traditional rigid molds to provide pressure or fix the workpiece, when there are differences in workpiece size, an adjustable fixing device is usually set up to position and fix the workpiece. If the guide rod telescopic method is used to position and fix the workpiece, an excessively long guide rod is required to accommodate different workpiece sizes, and an excessively long guide rod will occupy a lot of space.

[0004] Meanwhile, if a chute guide is used, a chute needs to be set on the surface of the worktable, which will result in the workpiece placement platform not being complete. When the adjusting fixing device fixes the workpiece, due to the different sizes of the workpieces, the workpiece position will be above the guide groove of the fixing device. This will cause the workpiece in the guide position area to be easily deformed or damaged during the pressure holding process due to the pressure holding intensity. Therefore, we provide a high-precision pressure holding device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision pressure-holding device to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-precision pressure-holding device includes a base and a pressure-holding component. A sliding shell is slidably disposed on the base, a positioning rod is disposed on the sliding shell, and a contact end is fixedly disposed on the positioning rod.

[0008] A support plate is fixedly installed on the sliding shell, and a sealing plate is slidably installed on the support plate. The sealing plate is adapted to a sliding groove reserved on the base. The sliding groove is used to provide sliding space for the sliding shell. A first inclined surface is provided on the sealing plate, and it abuts against the base through the first inclined surface.

[0009] It also includes a limiting component, which is used to block the sliding groove by the sealing plate when the positioning rod slides to fix the workpiece, and to disengage the sealing plate from the sliding groove when the positioning rod slides to the position where the contact end passes the sliding groove.

[0010] Preferably, the limiting member includes a fixed shell fixedly mounted on the base, and a locking rod slidably mounted on the fixed shell, the locking rod abutting against the sealing plate.

[0011] Preferably, a guide rod is fixedly provided on the base, a sliding frame is slidably provided on the guide rod, an abutting rod is fixedly provided on the sliding frame, and a third inclined surface is provided on the locking rod, with the abutting rod engaging with the third inclined surface.

[0012] Preferably, a second spring is provided between the locking rod and the fixed shell, and the two ends of the second spring are fixedly connected to the locking rod and the fixed shell respectively.

[0013] Preferably, a plurality of first springs are provided between the sealing plate and the support rod, and the two ends of the first springs are fixedly connected to the sealing plate and the support rod, respectively.

[0014] Preferably, the locking rod is provided with a second inclined surface for resetting the sealing plate.

[0015] Preferably, a first pulley and a second pulley are rotatably disposed on the sliding shell, a first protrusion is fixedly disposed on the first pulley, a first spiral groove is disposed on the positioning rod, and the first protrusion is slidably disposed in the first spiral groove.

[0016] Preferably, a sliding tube is fixedly provided on the sliding frame, a second spiral groove is provided on the sliding tube, a second protrusion is fixedly provided on the second pulley, and the second protrusion is slidably disposed in the second spiral groove;

[0017] A belt is provided for transmission between the first pulley and the second pulley.

[0018] Preferably, the first spiral groove and the second spiral groove have the same number of turns, and the pitch of the first spiral groove is greater than that of the second spiral groove.

[0019] Preferably, a reciprocating lead screw is rotatably mounted on the base, and a motor is fixedly mounted on the base, with the output shaft of the motor fixedly connected to the reciprocating lead screw.

[0020] In the above technical solution, the high-precision pressure holding device provided by the present invention has the following beneficial effects:

[0021] When the positioning rod slides to position and fix the workpiece, if the workpiece is large, it is fixed before the positioning rod exceeds the sliding groove. The sealing plate seals the sliding groove, placing the workpiece above the sliding groove to prevent deformation or damage due to lack of support at this position during the pressure holding process. If the workpiece is small, the sealing plate disengages from the sliding groove when the positioning rod passes the sliding groove, and the sliding shell slides on the sliding groove, simultaneously driving the positioning rod to slide, thus fixing the smaller workpiece. This method can prevent indentations or deformation caused by lack of support at the bottom of the workpiece when applying pressure to workpieces within a certain size range, greatly improving the pressure holding and bonding quality of the workpiece.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0023] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0026] Figure 2 The following are front sectional views and enlarged views of the overall structure provided in the embodiments of the present invention;

[0027] Figure 3 This is a schematic diagram of the sliding shell and guide rod structure provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the sliding shell provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the sliding frame and locking rod structure provided in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the first pulley and the second pulley provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram showing the contact state between the locking rod and the sealing plate, as provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Base; 11. Covering component; 12. Magnetic base; 13. Slide rail; 2. Sliding shell; 21. Positioning rod; 22. Contact end; 23. First spiral groove; 24. Support plate; 25. Sealing plate; 26. First inclined surface; 27. First spring; 3. Guide rod; 31. Sliding frame; 32. Sliding tube; 33. Second spiral groove; 34. Abutment rod; 4. Fixed shell; 41. Locking rod; 42. Second inclined surface; 43. Third inclined surface; 44. Second spring; 5. First pulley; 51. First protrusion; 52. Second pulley; 53. Second protrusion; 54. Belt; 6. Reciprocating screw; 61. Motor. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] Please refer to 1-7. A high-precision pressure-holding device includes a base 1 and a pressure-holding component 11. A sliding shell 2 is slidably disposed on the base 1, and a positioning rod 21 is disposed on the sliding shell 2. A contact end 22 is fixedly disposed on the positioning rod 21. A support plate 24 is fixedly disposed on the sliding shell 2, and a sealing plate 25 is slidably disposed on the support plate 24. The sealing plate 25 is adapted to a sliding groove reserved on the base 1. The sliding groove is used to provide sliding space for the sliding shell 2. A first inclined surface 26 is provided on the sealing plate 25, and the sealing plate 25 abuts against the base 1 through the first inclined surface 26. It also includes a limiting component, which is used to block the sliding groove of the sealing plate 25 when the positioning rod 21 slides to fix the workpiece. After the positioning rod 21 slides to its maximum value, the sealing plate 25 disengages from the sliding groove. During the process of positioning and fixing the workpiece, the positioning rod 21 slides first, and during the sliding process, it pushes the workpiece to position it. The position is adjusted. During the sliding of the positioning rod 21, the sliding shell 2 remains stationary, and the sealing plate 25 seals the sliding groove on the base 1. When the workpiece is large, the position adjustment and fixation of the workpiece can be completed simply by sliding the positioning rod 21. At this time, the sealing plate 25 seals the sliding groove to prevent the workpiece from being above the sliding groove. This would cause the workpiece to lack support during the pressure holding process, resulting in deformation or damage at that position. If the workpiece is small, when the positioning rod 21 slides to the position where the contact end 22 exceeds the sliding groove, it can be determined that the workpiece will not be above the sliding groove. At this time, the limiting component loses its limiting effect on the sealing plate 25, and the sealing plate 25 moves down and disengages from the sliding groove, allowing the sliding shell 2 to slide on the sliding groove, thereby driving the positioning rod 21 to continue sliding. This completes the process of positioning and fixing smaller workpieces.

[0036] Specifically, the limiting component includes a fixed housing 4 fixedly mounted on the base 1, and a locking rod 41 slidably mounted on the fixed housing 4. The locking rod 41 abuts against the sealing plate 25. When a large workpiece is fixed, the workpiece is located above the sliding groove. At this time, the sliding of the positioning rod 21 positions and fixes the workpiece at the contact end 22. At this time, the locking rod 41 abuts against the sealing plate 25, so that the sealing plate 25 supports the workpiece at the position of the sliding groove, and prevents the workpiece from being deformed or damaged at the position of the sliding groove at the bottom of the workpiece under pressure during pressure holding.

[0037] In a further embodiment of the present invention, a guide rod 3 is fixedly provided on the base 1, a sliding frame 31 is slidably provided on the guide rod 3, an abutment rod 34 is fixedly provided on the sliding frame 31, and a locking rod 41 is provided with a third inclined surface 43. The abutment rod 34 abuts against the third inclined surface 43. When positioning and fixing a smaller workpiece, the positioning rod 21 slides with the contact end 22. When the contact end 22 passes the position of the sliding groove, the guide rod 3 pushes the locking rod 41 to slide through the third inclined surface 43, so that the locking rod 41 disengages from the sealing plate 25. Then, the sliding shell 2 can slide, continuing to slide with the positioning rod 21, thus completing the positioning and fixing of the smaller workpiece.

[0038] Furthermore, a second spring 44 is provided between the locking rod 41 and the fixed shell 4. The two ends of the second spring 44 are fixedly connected to the locking rod 41 and the fixed shell 4 respectively. When fixing a larger workpiece, the workpiece is located above the sliding groove. At this time, under the action of the second spring 44, the locking rod 41 abuts against the sealing plate 25, so that the sealing plate 25 blocks the sliding groove and supports the workpiece located above the sliding groove. This prevents the workpiece from deforming or being damaged during the pressure holding process. When fixing a smaller workpiece, after the positioning rod 21 slides to the contact end 22 and passes the sliding groove, the guide rod 3 pushes the locking rod 41 to slide through the third inclined surface 43, so that the locking rod 41 disengages from the sealing plate 25 and compresses the second spring 44.

[0039] Furthermore, multiple first springs 27 are provided between the sealing plate 25 and the support plate 24. The two ends of the first springs 27 are fixedly connected to the sealing plate 25 and the support plate 24 respectively. When positioning and fixing a small workpiece, the contact end 22 crosses the sliding groove. Under the action of the abutment rod 34, the locking rod 41 slides and disengages from the sealing plate 25. Subsequently, when the sliding shell 2 slides, the sealing plate 25 slides through the support plate 24. Under the action of the first inclined surface 26 on the sealing plate 25 abutting against the base 1, the sealing plate 25 moves down and disengages from the sliding groove, compressing the first springs 27. At the same time, after the workpiece is pressure-held, when the sliding shell 2 returns to its original position with the sealing plate 25, the sealing plate 25 returns to its original position under the action of the first springs 27. After the sealing plate 25 returns to its original position, the locking rod 41 returns to its original position under the action of the second spring 44 and abuts against the sealing plate 25, thus limiting the sealing plate 25.

[0040] In a further embodiment of the present invention, the locking rod 41 is provided with a second inclined surface 42 for resetting the sealing plate 25. By providing the second inclined surface 42 on the locking rod 41, after the sealing plate 25 slides with the sliding shell 2 and disengages from the locking rod 41, the second inclined surface 42 presses against the locking rod 41 during the resetting process of the sealing plate 25. This prevents the sealing plate 25 from disengaging from the sliding shell 2 during the resetting process, causing the locking rod 41 to extend under the action of the second spring 44, thus restricting the resetting of the sealing plate 25 and preventing the sealing plate 25 from failing to reset. Furthermore, after the sealing plate 25 slides to the sliding groove position, it moves upward under the action of the first spring 27 to seal the sliding groove. At this time, under the action of the second spring 44, the locking rod 41 extends and abuts against the sealing plate 25, limiting the sealing plate 25.

[0041] In the embodiments provided by the present invention, a first pulley 5 and a second pulley 52 are rotatably disposed on the sliding shell 2. A first protrusion 51 is fixedly disposed on the first pulley 5, and a first spiral groove 23 is disposed on the positioning rod 21. The first protrusion 51 is slidably disposed in the first spiral groove 23. A sliding tube 32 is fixedly disposed on the sliding frame 31. A second spiral groove 33 is disposed on the sliding tube 32. A second protrusion 53 is fixedly disposed on the second pulley 52, and the second protrusion 53 is slidably disposed in the second spiral groove 33. A belt 54 is provided for transmission between the first pulley 5 and the second pulley 52. ​​When the workpiece is positioned and fixed, the sliding tube 32 slides through the second spiral groove 33 and... The second protrusion 53 engages to rotate the second pulley 52, which in turn rotates the first pulley 5 via the belt 54. Simultaneously, the first protrusion 51 engages with the first spiral groove 23 to allow the positioning rod 21 to slide, thus positioning and fixing the workpiece. When the positioning rod 21 passes the sliding groove, it slides to its maximum value relative to the sliding shell 2, and the tail of the positioning rod 21 abuts against the sliding shell 2. The sliding tube 32 also abuts against the sliding shell 2. At this time, the abutting rod 34, along with the sliding tube 32, causes the locking rod 41 to slide and disengage from the sealing plate 25 via the third inclined surface 43. Subsequently, the sliding tube 32 continues to slide, carrying the sliding shell 2 along with it, to continue positioning and fixing the workpiece.

[0042] Specifically, the first spiral groove 23 and the second spiral groove 33 have the same number of turns, and the pitch of the first spiral groove 23 is greater than that of the second spiral groove 33. When the sliding tube 32 slides, the second pulley 52 and the first pulley 5 rotate synchronously through the cooperation of the second spiral groove 33 and the second protrusion 53. The positioning rod 21 slides through the cooperation of the first protrusion 51 and the first spiral groove 23. Because the pitch of the first spiral groove 23 is greater than that of the second spiral groove 33, the positioning rod 21 slides a greater distance than the sliding tube 32 when the sliding tube 32 slides, so that the positioning rod 21 can quickly position and fix the workpiece.

[0043] In a further embodiment of the present invention, a reciprocating lead screw 6 is rotatably mounted on the base 1, and a motor 61 is fixedly mounted on the base 1. The output shaft of the motor 61 is fixedly connected to the reciprocating lead screw 6. The motor 61 mentioned in the present invention is a dual-axis motor 61, which can simultaneously drive the reciprocating lead screws 6 on both sides to rotate, thereby positioning and fixing them relative to the workpiece.

[0044] In this invention, the positioning mentioned refers to the positioning rods 21 on both sides of the workpiece pushing the workpiece to the middle position of the base 1 through the contact end 22. This invention can achieve positioning and fixing of the other two sides of the workpiece by setting the same components such as the positioning rods 21 and sliding shell 2 on the other two sides of the workpiece, so as to achieve more accurate positioning of the workpiece.

[0045] A slide rail 13 is provided on the base 1. The covering component 11 is slidably mounted on the base 1 via the slide rail 13, and the sliding covering component 11 is fixed by a magnetic seat 12. A magnet is fixedly mounted on the magnetic seat 12. The magnet is attached to the covering component 11, and the magnetic seat 12 is fixed to the base 1 by hexagonal bolts. This can effectively fix the covering component 11, and the magnet on the magnetic seat 12 can ensure the attachment between the magnetic seat 12 and the covering component 11, thus ensuring the stability of fixing the covering component 11.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision pressure-holding device, comprising a base (1) and a pressure-covering component (11), characterized in that, A sliding shell (2) is slidably disposed on the base (1), a positioning rod (21) is disposed on the sliding shell (2), and a contact end (22) is fixedly disposed on the positioning rod (21). A support plate (24) is fixedly provided on the sliding shell (2), and a sealing plate (25) is slidably provided on the support plate (24). The sealing plate (25) is adapted to the sliding groove reserved on the base (1). The sliding groove is used to provide sliding space for the sliding shell (2). A first inclined surface (26) is provided on the sealing plate (25), and it abuts against the base (1) through the first inclined surface (26). It also includes a limiting component, which is used to block the sliding groove by the sealing plate (25) when the positioning rod (21) slides to fix the workpiece, and to disengage the sealing plate (25) from the sliding groove when the positioning rod (21) slides to the contact end (22) and passes the position of the sliding groove. The limiting component includes a fixed shell (4) fixedly mounted on the base (1), and a locking rod (41) slidably mounted on the fixed shell (4), the locking rod (41) abutting against the sealing plate (25); A guide rod (3) is fixedly installed on the base (1), a sliding frame (31) is slidably installed on the guide rod (3), an abutting rod (34) is fixedly installed on the sliding frame (31), a third inclined surface (43) is provided on the locking rod (41), and the abutting rod (34) abuts against the third inclined surface (43). The sliding shell (2) is rotatably provided with a first pulley (5) and a second pulley (52). A first protrusion (51) is fixedly provided on the first pulley (5). A first spiral groove (23) is provided on the positioning rod (21). The first protrusion (51) is slidably provided in the first spiral groove (23). A sliding tube (32) is fixedly provided on the sliding frame (31), a second spiral groove (33) is provided on the sliding tube (32), a second protrusion (53) is fixedly provided on the second pulley (52), and the second protrusion (53) is slidably provided in the second spiral groove (33); A belt (54) is provided between the first pulley (5) and the second pulley (52) for transmission. The first spiral groove (23) and the second spiral groove (33) have the same number of turns, and the pitch of the first spiral groove (23) is greater than that of the second spiral groove (33).

2. The high-precision pressure-holding device according to claim 1, characterized in that, A second spring (44) is provided between the locking rod (41) and the fixed shell (4), and the two ends of the second spring (44) are fixedly connected to the locking rod (41) and the fixed shell (4) respectively.

3. The high-precision pressure-holding device according to claim 1, characterized in that, A plurality of first springs (27) are provided between the sealing plate (25) and the support plate (24), and the two ends of the first springs (27) are fixedly connected to the sealing plate (25) and the support plate (24) respectively.

4. The high-precision pressure-holding device according to claim 1, characterized in that, The locking rod (41) is provided with a second inclined surface (42) for resetting the sealing plate (25).

5. A high-precision pressure-holding device according to claim 1, characterized in that, A reciprocating screw (6) is rotatably mounted on the base (1), and a motor (61) is fixedly mounted on the base (1). The output shaft of the motor (61) is fixedly connected to the reciprocating screw (6).

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