A bidirectional film expansion mechanism

Abstract

The present invention discloses a bidirectional film expansion mechanism, comprising a base, four clamping jaw assemblies, an expansion assembly, four clamp spacing adjustment assemblies and a connecting assembly, wherein the clamping jaw assembly comprises a plurality of clamps arranged side by side; the expansion assembly comprises a crisscross guide rail and a driving mechanism installed on the base, and the four clamping jaw assemblies are respectively fixedly connected to the four guide rails through a mounting frame; the four clamp spacing adjustment assemblies are arranged in a one-to-one correspondence with the four clamping jaw assemblies, and the clamp spacing adjustment assembly comprises an adjustment plate slidably connected to the mounting frame, a plurality of slide grooves are provided on the adjustment plate, and the plurality of slide grooves are in the shape of an isosceles trapezoid, one end of the plurality of slide grooves are evenly spaced and located at the upper base of the isosceles trapezoid, and the other end is evenly spaced and located at the lower base of the isosceles trapezoid; the connecting assembly is connected between the crisscross guide rail and the clamp spacing adjustment assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of crystal expansion, and in particular to a bidirectional film expansion mechanism. Background Art

[0002] The crystal expander, also known as the wafer expander or film expander, is widely used in the grain expansion process in the production of light-emitting diodes, LEDs, integrated circuits and some special semiconductor devices. After the LED chips are produced by the manufacturer, the LED chips are densely fixed on the film. Due to the small gap between the LED chips, this type of raw material cannot be directly grabbed and fixed by the crystal bonder, so the film needs to be expanded. Since the film itself is elastic, stretching the film during crystal expansion can change the distance between the LED chips on the film.

[0003] In existing crystal expansion machines, clamping claws are used to clamp the four sides of the film and stretch it to achieve the effect of film expansion. However, the film clamped by the clamps is not stretched, resulting in wrinkles in the film after stretching and expansion, affecting the quality of the film. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the present invention provides a bidirectional film expansion mechanism, which uses multiple clamps arranged side by side to clamp the film. During stretching, the distance between the clamps gradually increases to adapt to the expansion of the film. The film is flat after stretching and expansion, thereby improving product quality.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A bidirectional film expansion mechanism, comprising:

[0007] base;

[0008] An expansion assembly includes a crisscross guide rail mounted on a base and a drive mechanism, wherein the drive mechanism is used to drive the four guide rails of the crisscross guide rail to move independently;

[0009] Four clamping jaw assemblies, each of which is arranged in a rectangular shape and is used to clamp the four edges of the film. The four clamping jaw assemblies are respectively connected to four guide rails via a mounting frame. The clamping jaw assemblies include a plurality of clamps arranged side by side, and the plurality of clamps are slidably connected to the mounting frame along their arrangement direction.

[0010] Four clip spacing adjustment assemblies are provided in a one-to-one correspondence with the four clamping jaw assemblies, the clip spacing adjustment assemblies are used to adjust the spacing of the plurality of clips, the clip spacing adjustment assembly includes an adjustment plate slidably connected to the mounting frame, the adjustment plate is provided with a plurality of slide grooves, and the plurality of slide grooves are in the shape of an isosceles trapezoid, one end of the plurality of slide grooves is evenly spaced and located at the upper base of the isosceles trapezoid, and the other end is evenly spaced and located at the lower base of the isosceles trapezoid;

[0011] The plurality of clips are each connected to a first cam follower, the plurality of first cam followers corresponding one-to-one to the plurality of slide slots, and the first cam followers are movably connected in the slide slots along the length direction of the slide slots, and when the plurality of first cam followers synchronously move in the slide slots along the direction from the upper base of the isosceles trapezoid to the lower base of the isosceles trapezoid, the spacing between the plurality of clips gradually increases;

[0012] The connecting component is connected between the well-shaped guide rail and the clip spacing adjustment component, and is used to drive the four adjustment plates to move along with the four guide rails of the well-shaped guide rail when the well-shaped guide rail moves.

[0013] As a further improvement of the above technical solution, the clamp includes an upper clamping block, a lower clamping block and a clamping head, the clamping head is installed on the upper clamping block, the end of the lower clamping block is provided with a supporting surface, and the output end of the clamping head can move toward or away from the supporting surface.

[0014] As a further improvement of the above technical solution, a first slide rail is provided on the mounting frame, and the first slide rail is slidably connected to multiple first sliders, the multiple first sliders correspond one-to-one to the lower clamping blocks of the multiple clamps, and the lower clamping blocks are fixedly connected to the first sliders.

[0015] As a further improvement of the above technical solution, the mounting frame includes a support plate, a support block and a mounting plate. The four support plates are respectively fixedly connected to the four guide rails of the criss-cross guide rail. The mounting plate is connected to the support plate through the support block. The mounting plate is located above the adjustment plate. The first slide rail is installed on the mounting plate. The mounting plate is also provided with an avoidance opening. The first cam follower passes through the avoidance opening and is connected to the slide groove.

[0016] As a further improvement of the above technical solution, the four guide rails of the crisscross guide rail are respectively a first guide rail, a second guide rail, a third guide rail and a fourth guide rail, the first guide rail and the second guide rail are arranged along the X-axis direction, the third guide rail and the fourth guide rail are arranged along the Y-axis direction, and the driving mechanism includes four, two of which are used to drive the first guide rail and the second guide rail to move along the Y-axis direction, and the other two driving mechanisms are used to drive the third guide rail and the fourth guide rail to move along the X-axis direction.

[0017] As a further improvement of the above technical solution, the driving mechanism includes a motor and a screw module, and the nuts of the screw modules in the four driving mechanisms are respectively connected to the four guide rails of the cross-shaped guide rail.

[0018] As a further improvement of the above technical solution, the adjustment plates in the four clip spacing adjustment assemblies are respectively the first adjustment plate, the second adjustment plate, the third adjustment plate and the fourth adjustment plate, and the first adjustment plate, the second adjustment plate, the third adjustment plate and the fourth adjustment plate are respectively slidably connected to the support plates on the first guide rail, the second guide rail, the third guide rail and the fourth guide rail through a sliding structure.

[0019] As a further improvement of the above technical solution, the connecting assembly includes a first connecting assembly and a second connecting assembly, the first connecting assembly is connected to the intersection of the first guide rail and the fourth guide rail, and the second connecting assembly is connected to the intersection of the second guide rail and the third guide rail;

[0020] The first connecting component and the second connecting component have the same structure;

[0021] The first connecting assembly includes a first connecting plate, a first guide structure and a second guide structure are provided at the bottom of the first connecting plate, the first guide structure is slidably connected to the first guide rail along the X-axis direction, and the second guide structure is slidably connected to the fourth guide rail along the Y-axis direction; a first connecting rod and a second connecting rod are provided at the top of the first connecting plate, the first connecting rod and the second connecting rod are arranged perpendicular to each other, and the ends of the first connecting rod and the second connecting rod are respectively provided with a second cam follower and a third cam follower; the first adjusting plate and the fourth adjusting plate are both provided with an adjusting slot, the second cam follower is movably connected to the adjusting slot on the first adjusting plate, and the third cam follower is movably connected to the adjusting slot on the fourth adjusting plate;

[0022] The second connecting assembly includes a second connecting plate, a third guide structure, a fourth guide structure, a third connecting rod, a fourth connecting rod, a fourth cam follower, and a fifth cam follower, the third guide structure being slidably connected to the third guide rail along the X-axis direction, the fourth guide structure being slidably connected to the second guide rail along the Y-axis direction, the second adjustment plate and the third adjustment plate being provided with adjustment slots, the fourth cam follower being movably connected to the adjustment slot on the second adjustment plate, and the fifth cam follower being movably connected to the adjustment slot on the third adjustment plate;

[0023] When the first connecting plate moves along the Y-axis along the first guide rail, the second guide structure slides along the Y-axis on the fourth guide rail, and the third cam follower moves in the adjustment slot on the first adjustment plate and is used to drive the fourth adjustment plate to move along the X-axis; when the first connecting plate moves along the X-axis along the fourth guide rail, the first guide structure slides along the X-axis on the first guide rail, and the second cam follower moves in the adjustment slot on the first adjustment plate and is used to drive the first adjustment plate to move along the Y-axis;

[0024] When the second connecting plate moves along the Y-axis direction with the third guide rail, the third guide structure slides on the second guide rail along the Y-axis direction, and the fourth cam follower moves in the adjustment slot on the second adjustment plate and is used to drive the second adjustment plate to move along the X-axis direction; when the second connecting plate moves along the X-axis direction with the second guide rail, the fourth guide structure slides on the third guide rail along the X-axis direction, and the fifth cam follower moves in the adjustment slot on the third adjustment plate and is used to drive the third adjustment plate to move along the Y-axis.

[0025] As a further improvement of the above technical solution, the first guide structure includes a sixth cam follower arranged at the bottom of the first connecting plate and a guide groove arranged on the first guide rail along the X-axis direction, and the sixth cam follower is movably connected in the guide groove along the length direction of the guide groove.

[0026] As a further improvement of the above technical solution, the second guide structure includes a second slider arranged at the bottom of the first connecting plate and a second slide rail arranged on the fourth guide rail along the Y-axis direction, and the second slider is slidably connected to the second slide rail.

[0027] The beneficial effects of the present invention are:

[0028] The two parallel guide rails of the crisscross guide rail move relative to each other, and the clamping claw assembly is connected to the guide rail to realize the bidirectional stretching of the film. Then, the crisscross guide rail and the clamp spacing adjustment assembly are linked through the connecting assembly, so that the multiple clamps in the clamping claw assembly are opened synchronously with the stretching action of the film, thereby adapting to the stretching and expansion of the film. After stretching and expansion, the film is flat and wrinkle-free, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and examples.

[0030] Figure 1 This is a schematic diagram of the assembly of a bidirectional film expansion mechanism in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the assembly of the clamping jaw assembly and the clamp spacing adjustment assembly in an embodiment of the present invention. Figure 1 ;

[0032] Figure 3 This is a schematic diagram of the assembly of the clamping jaw assembly and the clamp spacing adjustment assembly in an embodiment of the present invention. Figure 2 ;

[0033] Figure 4 yes Figure 3 Structural decomposition diagram;

[0034] Figure 5 1 is a schematic structural diagram of a clip according to an embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of a first connection component in an embodiment of the present invention;

[0036] Figure 7 yes Figure 1 A partial enlarged view of point A in the middle.

[0037] Reference numerals: 1, base; 2, clamping jaw assembly; 21, clamp; 211, upper clamping block; 212, lower clamping block; 213, chuck; 22, mounting frame; 221, support plate; 222, support block; 223, mounting plate; 224, avoidance; 23, first slide rail; 24, first slider; 25, connecting block; 3, clamp spacing adjustment assembly; 31, first adjustment plate; 311, slide groove; 312, adjustment groove; 313, first cam follower; 314, linear guide rail; 32, second adjustment plate; 33, third adjustment plate; 34, fourth adjustment plate; 41. First drive mechanism; 42. Second drive mechanism; 421. Motor; 422. Screw module; 43. Third drive mechanism; 44. Fourth drive mechanism; 51. First guide rail; 52. Second guide rail; 53. Third guide rail; 54. Fourth guide rail; 61. First connecting assembly; 611. First connecting plate; 612. Second connecting rod; 613. Third cam follower; 614. First connecting rod; 615. Second cam follower; 616. Fixed block; 617. Sixth cam follower; 618. Second slider; 62. Second connecting assembly. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected from screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods as needed. For detachable connection, screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods can be selected as needed. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0039] Reference Figure 1An embodiment of the present invention provides a bidirectional film expansion mechanism, which includes a base 1, an expansion component, a clamping jaw component 2, a clamp spacing adjustment component 3 and a connecting component. There are four clamping jaw components 2, and the four clamping jaw components 2 are arranged in a rectangular shape to clamp the four sides of the film. The four clamping jaw components 2 are connected to the expansion component, thereby stretching the film from the front, back, left and right (positive and negative directions of the X-axis, positive and negative directions of the Y-axis) to achieve bidirectional stretching film expansion and improve the quality of crystal expansion; in addition, each clamping jaw component 2 is connected to a clamp spacing adjustment component 3, which is used to adjust the spacing between multiple clamps 21 in the clamping jaw component 2 to adapt to the expansion of the film during film expansion, so that the film is flat and wrinkle-free after stretching and expansion, and the clamp spacing adjustment component 3 is connected to the expansion component through the connecting component to achieve synchronous linkage, ensuring that the spacing adjustment of the clamps 21 is consistent with the stretching degree of the film, further improving product quality.

[0040] In this embodiment, referring to Figure 1 The expansion assembly includes a crisscross guide rail and a driving mechanism installed on the base 1, and the driving mechanism is used to drive the four guide rails of the crisscross guide rail to move separately, thereby driving the movement of the four clamping jaw assemblies 2.

[0041] Specifically, the four guide rails of the crisscross guide rail are respectively the first guide rail 51, the second guide rail 52, the third guide rail 53 and the fourth guide rail 54, the first guide rail 51 and the second guide rail 52 are arranged along the X-axis direction, the third guide rail 53 and the fourth guide rail 54 are arranged along the Y-axis direction, more specifically, the base 1 is provided with the first guide rail 51, the second guide rail 52, the third guide rail 53 and the fourth guide rail 54 along the X-axis direction, the first guide rail 51 and the second guide rail 52 are arranged on the base 1 along the X-axis direction The third guide rails 53 and the fourth guide rails 54 are arranged along the Y-axis direction, and the two ends of the third guide rails 53 and the fourth guide rails 54 are connected to the first guide rails 51 and the second guide rails 52 respectively through a slider, and the two ends of the first guide rails 51 and the second guide rails 52 are connected to the third guide rails 53 and the fourth guide rails 54 respectively through a slider. In addition, the heights of the first guide rails 51 and the second guide rails 52 are higher than the third guide rails 53 and the fourth guide rails 54, so that the movement of the four guide rails does not interfere.

[0042] In this embodiment, the driving mechanisms include four, namely the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43 and the fourth driving mechanism 44. Taking the second driving mechanism 42 as an example, the driving motor 421 includes a motor 421 and a screw module 422, and the nuts of the screw modules 422 in the four driving mechanisms are respectively connected to the four guide rails of the criss-cross guide rails, thereby driving the four guide rails to move.

[0043] Among them, the first driving mechanism 41 and the second driving mechanism 42 are used to drive the first guide rail 51 and the second guide rail 52 to move along the positive and negative directions of the Y-axis. The screw modules 422 of the first driving mechanism 41 and the second driving mechanism 42 both include left-right rotating double-nut screws. The two nuts of the left-right rotating double-nut screw in the first driving mechanism 41 are connected to one end of the first guide rail 51 and the second guide rail 52, and the two nuts of the left-right rotating double-nut screw in the second driving mechanism 42 are connected to the other end of the first guide rail 51 and the second guide rail 52.

[0044] The third drive mechanism 43 and the fourth drive mechanism 44 are used to drive the third guide rail 53 and the fourth guide rail 54 to move along the positive and negative directions of the X-axis, respectively. As above, the screw modules 422 of the third drive mechanism 43 and the fourth drive mechanism 44 both include left-right rotating double-nut screws, and the two nuts of the left-right rotating double-nut screw in the third drive mechanism 43 are connected to one end of the third guide rail 53 and the fourth guide rail 54, and the two nuts of the left-right rotating double-nut screw in the fourth drive mechanism 44 are connected to the other end of the third guide rail 53 and the fourth guide rail 54.

[0045] Through the above arrangement, the driving mechanism can drive the four guide rails to move smoothly, thereby driving the four clamping jaw assemblies 2 to move smoothly.

[0046] In this embodiment, referring to Figure 2-Figure 5 The clamping jaw assembly 2 includes a plurality of clamps 21 arranged side by side, and the plurality of clamps 21 are slidably connected to a mounting frame 22 along their arrangement direction. The clamp 21 includes an upper clamping block 211, a lower clamping block 212 and a chuck 213. The chuck 213 can be a pneumatic chuck or a mechanical chuck. The chuck 213 is installed on the upper clamping block 211, and a supporting surface is provided at the end of the lower clamping block 212. The output end of the chuck 213 can move toward or away from the supporting surface to clamp or release the film.

[0047] Furthermore, the mounting frame 22 includes a support plate 221, a support block 222, and a mounting plate 223. The support plates 221 of the four mounting frames 22 are respectively fixedly connected to the first guide rail 51, the second guide rail 52, the third guide rail 53, and the fourth guide rail 54, and the mounting plate 223 is connected to the support plate 221 via the support block 222. The mounting plate 223 is provided with a first slide rail 23, and a plurality of first sliders 24 are slidably connected to the first slide rail 23. The plurality of first sliders 24 correspond one-to-one to the plurality of lower clamping blocks 212 of the plurality of clips 21, and the lower clamping blocks 212 are fixedly connected to the first sliders 24, thereby enabling the plurality of clips 21 to move individually, thereby facilitating adjustment of the spacing between the clips 21.

[0048] In this embodiment, the clip spacing adjustment component 3 includes an adjustment plate, on which a plurality of slide grooves 311 are provided, and the plurality of slide grooves 311 are in the shape of an isosceles trapezoid, one end of the plurality of slide grooves 311 is evenly spaced and located at the upper base (short base) of the isosceles trapezoid, and the other end is evenly spaced and located at the lower base (long base) of the isosceles trapezoid, that is, the spacing between two adjacent slide grooves 311 gradually increases from the upper base to the lower base of the isosceles trapezoid; the plurality of clips 21 are all connected to a first cam follower 313, and a connecting block 25 is fixed to the bottom of the lower clamping block 212, and the first cam follower 313 is fixed to the connecting block At the bottom of the hole, multiple first cam followers 313 correspond one-to-one to multiple slide grooves 311, and the first cam followers 313 are movably connected in the slide groove 311 along the length direction of the slide groove 311. When the multiple first cam followers 313 move synchronously along the direction from the upper base of the isosceles trapezoid to the lower base of the isosceles trapezoid in the slide groove 311, the spacing between the multiple clips 21 gradually increases. Conversely, when the multiple first cam followers 313 move synchronously along the direction from the lower base of the isosceles trapezoid to the upper base of the isosceles trapezoid in the slide groove 311, the spacing between the multiple clips 21 gradually decreases.

[0049] In addition, the adjustment plate is slidably connected to the support plate 221 through a sliding structure (a linear guide rail 314 can be used) and is located below the mounting plate 223. A relief opening 224 is also provided on the mounting plate 223. The first cam follower 313 passes through the relief opening 224 and is connected to the slide groove 311.

[0050] It can be understood that the adjustment plates in the four clip spacing adjustment assemblies 3 are respectively the first adjustment plate 31, the second adjustment plate 32, the third adjustment plate 33 and the fourth adjustment plate 34, and the first adjustment plate 31, the second adjustment plate 32, the third adjustment plate 33 and the fourth adjustment plate 34 are respectively slidably connected to the support plate 221 connected by the first guide rail 51, the second guide rail 52, the third guide rail 53 and the fourth guide rail 54 through a linear guide rail 314.

[0051] In this embodiment, the connecting component is connected between the crisscross guide rail and the clip spacing adjustment component 3, and is used to drive the four adjustment plates to move in the same direction along with the four guide rails of the crisscross guide rail when the crisscross guide rail moves.

[0052] Specifically, refer to Figure 6 and Figure 7 The connecting component includes a first connecting component 61 and a second connecting component 62. The first connecting component 61 is connected to the intersection of the first guide rail 51 and the fourth guide rail 54, and the second connecting component 62 is connected to the intersection of the second guide rail 52 and the third guide rail 53.

[0053] More specifically, the first connecting assembly 61 includes a first connecting plate 611, and the bottom of the first connecting plate 611 is provided with a first guide structure and a second guide structure, the first guide structure is slidably connected to the first guide rail 51 along the X-axis direction, and the second guide structure is slidably connected to the fourth guide rail 54 along the Y-axis direction; the top of the first connecting plate 611 is provided with a first connecting rod 614 and a second connecting rod 612, the first connecting rod 614 and the second connecting rod 612 are arranged perpendicular to each other, and the ends of the first connecting rod 614 and the second connecting rod 612 are respectively provided with a second cam follower 615 and a third cam follower 613; the first adjustment plate 31 and the fourth adjustment plate 34 are both provided with an adjustment slot 312, and the adjustment slot 312 is arranged at 45° to the X or Y axis direction, the second cam follower 615 is movably connected to the adjustment slot 312 on the first adjustment plate 31, and the third cam follower 613 is movably connected to the adjustment slot 312 on the fourth adjustment plate 34.

[0054] Through the above-mentioned arrangement, when the first connecting plate 611 moves along the Y-axis direction with the first guide rail 51, the second guide structure slides along the Y-axis direction on the fourth guide rail 54, and the third cam follower 613 moves in the adjustment slot 312 on the first adjustment plate 31 and can drive the fourth adjustment plate 34 to move along the X-axis direction, thereby adjusting the spacing of the clips 21 connected to the fourth adjustment plate 34; when the first connecting plate 611 moves along the X-axis direction with the fourth guide rail 54, the first guide structure slides along the X-axis direction on the first guide rail 51, and the second cam follower 615 moves in the adjustment slot 312 on the first adjustment plate 31 and can drive the first adjustment plate 31 to move along the Y-axis direction, thereby adjusting the spacing of the clips 21 connected to the first adjustment plate 31.

[0055] Reference Figure 6 and Figure 7 In this embodiment, the second connecting assembly 62 has the same structure as the first connecting assembly 61. Specifically, the second connecting assembly 62 includes a second connecting plate, a third guide structure, a fourth guide structure, a third connecting rod, a fourth connecting rod, a fourth cam follower, and a fifth cam follower. The third guide structure is slidably connected to the third guide rail 53 along the X-axis direction, and the fourth guide structure is slidably connected to the second guide rail 52 along the Y-axis direction. The second adjustment plate 32 and the third adjustment plate 33 are both provided with an adjustment slot 312, and the adjustment slot 312 is arranged at 45 degrees to the X or Y axis direction. The fourth cam follower is movably connected to the adjustment slot 312 on the second adjustment plate 32, and the fifth cam follower is movably connected to the adjustment slot 312 on the third adjustment plate 33.

[0056] Through the above-mentioned arrangement, when the second connecting plate moves along the Y-axis direction with the third guide rail 53, the third guide structure slides along the Y-axis direction on the second guide rail 52, and the fourth cam follower moves in the adjustment slot 312 on the second adjustment plate 32 and can drive the second adjustment plate 32 to move along the X-axis direction, thereby adjusting the spacing of the clips 21 connected to the second adjustment plate 32; when the second connecting plate moves along the X-axis direction with the second guide rail 52, the fourth guide structure slides along the X-axis direction on the third guide rail 53, and the fifth cam follower moves in the adjustment slot 312 on the third adjustment plate 33 and can drive the third adjustment plate 33 to move along the Y-axis direction, thereby adjusting the spacing of the clips 21 connected to the third adjustment plate 33.

[0057] In summary, the multiple clips 21 of the four clamping jaw assemblies 2 can adaptively adjust the spacing between the clips 21 when the expansion assembly drives the film to expand. After stretching and expansion, the film is flat and wrinkle-free, thereby improving product quality.

[0058] Furthermore, the first guide structure includes a sixth cam follower 617 disposed at the bottom of the first connecting plate 611 and a first guide slot disposed along the X-axis on the first guide rail 51. The sixth cam follower 617 is fixedly connected to the bottom of the first connecting plate 611 via a fixing block 616. The fixing block 616 is configured to adapt to the height of the first connecting plate 611 and enable the sixth cam follower 617 to be movably connected within the first guide slot along the length of the guide slot. Similarly, the third guide structure includes a seventh cam follower disposed at the bottom of the second connecting plate and a second guide slot disposed along the X-axis on the second guide rail 52. The sixth cam follower 617 is movably connected within the second guide slot along the length of the guide slot.

[0059] The second guide structure includes a second slider 618 arranged at the bottom of the first connecting plate 611 and a second slide rail arranged on the fourth guide rail 54 along the Y-axis direction, and the second slider 618 is slidably connected to the second slide rail; the fourth guide structure includes a third slider arranged at the bottom of the second connecting plate and a third slide rail arranged on the third guide rail 53 along the Y-axis direction, and the third slider is slidably connected to the third slide rail.

[0060] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A bidirectional film expansion mechanism, characterized in that: include: base; An expansion assembly includes a crisscross guide rail formed by four guide rails mounted on a base and a drive mechanism for driving the crisscross guide rails to move individually; Four clamping jaw assemblies, each of which is arranged in a rectangular shape and is used to clamp the four edges of the film. The four clamping jaw assemblies are respectively connected to four guide rails via a mounting frame. The clamping jaw assemblies include a plurality of clamps arranged side by side, and the plurality of clamps are slidably connected to the mounting frame along their arrangement direction. Four clip spacing adjustment assemblies are provided in one-to-one correspondence with the four clamping jaw assemblies, the clip spacing adjustment assemblies are used to adjust the spacing of the plurality of clips, the clip spacing adjustment assembly includes an adjustment plate slidably connected to the mounting frame, the adjustment plate is provided with a plurality of slide grooves, and the plurality of slide grooves are in an isosceles trapezoidal shape, one end of the plurality of slide grooves is evenly spaced and located at the upper bottom edge of the slide groove, and the other end is evenly spaced and located at the lower bottom edge of the slide groove; The plurality of clips are all connected to a first cam follower, and the plurality of first cam followers correspond one-to-one to the plurality of slide slots. The first cam followers are movably connected to the slide slots along the length direction of the slide slots. When the plurality of first cam followers synchronously move in the slide slots along the direction from the upper bottom edge of the slide slot to the lower bottom edge of the slide slot, the spacing between the plurality of clips gradually increases. The connecting component is connected between the well-shaped guide rail and the clip spacing adjustment component, and is used to drive the four adjustment plates to move along with the four guide rails of the well-shaped guide rail when the well-shaped guide rail moves.

2. A bidirectional film expansion mechanism according to claim 1, characterized in that: The connecting assembly includes two connecting assemblies, and the two connecting assemblies are respectively connected to two diagonal positions of a quadrilateral formed by four guide rails; the connecting assembly includes a connecting plate, and a first guide structure and a second guide structure are provided at the bottom of the connecting plate, and the first guide structure and the second guide structure are respectively provided on the guide rails along the length direction of two adjacent guide rails at diagonal positions; the top of the connecting plate is provided with a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are arranged perpendicular to each other, and the ends of the first connecting rod and the second connecting rod are respectively provided with a second cam follower and a third cam follower; the adjustment plates in the four clip spacing adjustment assemblies are all provided with adjustment slots, and the second cam follower and the third cam follower are respectively movably connected to the adjustment slots on two adjacent adjustment plates, and the two adjustment plates are respectively located above the guide rails connected by the first guide structure and the second guide structure.

3. A bidirectional film expansion mechanism according to claim 2, characterized in that: The first guide structure includes a sixth cam follower arranged at the bottom of the connecting plate and a guide groove arranged on the guide rail along the X-axis direction, and the sixth cam follower is movably connected in the guide groove along the length direction of the guide groove.

4. A bidirectional film expansion mechanism according to claim 2, characterized in that: The second guide structure includes a second sliding block arranged at the bottom of the connecting plate and a second slide rail arranged on the guide rail along the Y-axis direction, and the second sliding block is slidably connected to the second slide rail.

5. The bidirectional film expansion mechanism according to claim 1, characterized in that: The clamp comprises an upper clamping block, a lower clamping block and a clamping head, wherein the clamping head is mounted on the upper clamping block, and an end portion of the lower clamping block is provided with a supporting surface, and an output end of the clamping head can move toward or away from the supporting surface.

6. A bidirectional film expansion mechanism according to claim 5, characterized in that: The mounting frame is provided with a first slide rail, and the first slide rail is slidably connected to a plurality of first sliders, the plurality of first sliders correspond one-to-one to the plurality of lower clamping blocks of the clamps, and the lower clamping blocks are fixedly connected to the first sliders.

7. A bidirectional film expansion mechanism according to claim 6, characterized in that: The mounting frame includes a support plate, a support block and a mounting plate. The four support plates are respectively fixedly connected to the four guide rails of the cross-shaped guide rail. The mounting plate is connected to the support plate through the support block. The mounting plate is located above the adjustment plate. The first slide rail is installed on the mounting plate. The mounting plate is also provided with an avoidance opening. The first cam follower passes through the avoidance opening and is connected to the slide groove.

8. A bidirectional film expansion mechanism according to claim 7, characterized in that: The four guide rails of the crisscross guide rail are respectively the first guide rail, the second guide rail, the third guide rail and the fourth guide rail. The first guide rail and the second guide rail are arranged along the X-axis direction, and the third guide rail and the fourth guide rail are arranged along the Y-axis direction. The driving mechanism includes four, two of which are used to drive the first guide rail and the second guide rail to move along the Y-axis direction, and the other two driving mechanisms are used to drive the third guide rail and the fourth guide rail to move along the X-axis direction.

9. The bidirectional film expansion mechanism according to claim 8, characterized in that: The driving mechanism includes a motor and a screw module, and the nuts of the screw modules in the four driving mechanisms are respectively connected to the four guide rails of the cross-shaped guide rail.

10. The bidirectional film expansion mechanism according to claim 8, characterized in that: The adjustment plates in the four clip spacing adjustment assemblies are respectively the first adjustment plate, the second adjustment plate, the third adjustment plate and the fourth adjustment plate, and the first adjustment plate, the second adjustment plate, the third adjustment plate and the fourth adjustment plate are respectively slidably connected to the support plates on the first guide rail, the second guide rail, the third guide rail and the fourth guide rail through a sliding structure.

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