A medicine packaging box pasting box machine and a pressure maintaining and pre-folding method thereof

Abstract

This invention discloses a box-gluing machine for pharmaceutical packaging and its pressure-holding and pre-folding method, relating to the field of packaging production technology. The machine includes: a conveyor line; a pressing mechanism comprising a telescopic pressure plate located directly above the conveyor line, the upper side of which is connected via a lifting assembly and a sliding assembly; and a pre-folding mechanism located on one side of the conveyor line, comprising a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit drives the transverse moving unit to move synchronously along the conveying direction of the conveyor line. The transverse moving unit drives the clamping assembly to move away from or towards the packaging box. The clamping assembly clamps the already glued sides of the packaging box inwards. This solution allows the glued area to quickly adapt to the deformation of the box itself by maintaining pressure at the glued position and pre-deforming it, thus minimizing the risk of misalignment during flattening at the stacking position.

Description

Technical Field

[0001] This invention relates to the field of packaging production technology, specifically to a box gluing machine for pharmaceutical packaging and its pressure-holding and pre-folding method. Background Technology

[0002] A folder gluer is a core piece of equipment in the packaging and printing industry. It is used to automatically fold, glue, and press printed and die-cut flat cardboard (box blanks) to finally produce paper boxes.

[0003] Pharmaceutical packaging boxes are used to package medicines, so packaging quality is of paramount importance. During the box-gluing machine's production process, after the gluing and folding components apply glue and fold the sides of the cardboard, a box with unsealed bottoms at both ends is formed. The box is then conveyed to the stacking position via a conveyor line, where it is flattened to facilitate stacking.

[0004] In existing technologies, if the glued boxes are directly pressed into a flat shape for stacking, the sudden deformation may cause the glued area to be unable to adapt to the deformation quickly, resulting in misalignment at the glued area and affecting the quality of the final product. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention aims to provide a pharmaceutical packaging box gluing machine and its pressure-holding and pre-folding method. By employing this solution, the gluing position can quickly adapt to the deformation of the box itself through pressure holding and pre-deformation, thereby minimizing the risk of misalignment during flattening at the stacking position.

[0006] This invention is achieved through the following technical solution:

[0007] A medicine packaging box gluing machine, comprising:

[0008] A conveyor line used to sequentially transport folded and shaped packaging boxes;

[0009] The pressing mechanism includes a telescopic pressure plate located directly above the conveyor line. The upper side of the telescopic pressure plate is connected by a lifting assembly and a sliding assembly. The sliding assembly is used to drive the lifting assembly to move back and forth along the conveying direction of the conveyor line. The lifting assembly is used to drive the telescopic pressure plate to rise and fall to press down the top of the packaging box.

[0010] A pre-folding mechanism is located on one side of the conveyor line. The pre-folding mechanism includes a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit drives the transverse moving unit to move synchronously along the conveying direction of the conveyor line. The transverse moving unit drives the clamping assembly to move away from or towards the packaging box. The clamping assembly clamps the already glued sides of the packaging box inwards.

[0011] The rotary drive unit is used to drive the clamping assembly to reciprocate. The reciprocating rotation direction includes towards the packaging box conveying direction and away from the packaging box conveying direction, and the rotation center is directly opposite the lower end of the glued side of the packaging box.

[0012] Compared to existing technologies where directly flattening the glued boxes for stacking can lead to misalignment at the bonding points, this invention provides a pharmaceutical packaging box gluing machine and its pressure-holding and pre-folding method. This solution allows the bonding points to quickly adapt to the box's own deformation through pressure holding and pre-deformation, preventing misalignment during flattening at the stacking points. Specifically, the solution includes a conveyor line, a pressing mechanism, and a pre-folding mechanism. The gluing component first applies glue to one side of the cardboard, then conveys it to the folding component for folding. The folded box is then placed on the conveyor line—a standard technique. A reversing mechanism is also installed on the conveyor line to change the orientation of the box, ensuring the open ends face the sides of the conveyor line. This reversing mechanism is also a conventional technique and will not be elaborated further. The conveyor line is a step-type conveyor. In this solution, the pre-folding of the packaging box is mainly achieved through a pressing mechanism and a pre-folding mechanism. The pressing mechanism is located directly above the conveyor line and fixed to the panel frame above it. The panel frame is connected to the telescopic pressure plate via a sliding assembly and a lifting assembly, allowing the telescopic pressure plate to press against the top of the packaging box and move synchronously with the pre-folding process. During pre-folding, the pressure plate remains on the top of the packaging box to prevent it from detaching from the conveyor line and applies downward pressure to facilitate deformation. The pre-folding mechanism includes a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit drives multiple transverse moving units to move longitudinally, achieving synchronous displacement with the conveyor line. The transverse moving units drive the clamping assembly to move laterally, clamping the already glued sides of the packaging box inwards. Multiple clamping assemblies can clamp multiple packaging boxes simultaneously. After clamping, the rotary drive unit rotates the clamping assembly back and forth, working in conjunction with the pressing mechanism to achieve reciprocating pre-folding of the packaging box.

[0013] Throughout the process described above, the clamping assembly consistently holds the bonded side within its grip, maintaining pressure at the bonding site to allow the adhesive to dry within a certain timeframe and prevent it from peeling off. Secondly, by pre-folding the packaging box, it allows the box to adapt to deformation in advance, reducing the impact of deformation on the bonding site and minimizing the risk of misalignment during flattening at the stacking location. Furthermore, the rotation center is aligned with the lower end of the bonded side of the packaging box, ensuring that the clamping assembly and the bonded side are located at the same rotation center.

[0014] Further optimization involves the following specific structure for the longitudinal moving unit: The longitudinal moving unit includes a support platform, a first slide rail, and a first slider. The first slide rail is fixed to the support platform and arranged along the conveying direction of the conveyor line. The first slider and the first slide rail are slidably connected. The transverse moving unit is disposed on the first slider. In this design, several first sliders can be sequentially arranged on the first slide rail to simultaneously clamp multiple packaging boxes; and the telescopic pressure plate can simultaneously press down on multiple packaging boxes.

[0015] Further optimization, as a specific structure of the lateral movement unit, the lateral movement unit includes two fixed limiting plates, which are arranged opposite to each other and are both connected to the first slider. The length direction of the limiting plates is towards the conveyor line.

[0016] The clamping assembly includes two clamping plates arranged opposite each other. Each of the two limiting plates has a clamping plate on its opposite surface. The clamping plates are slidably connected to the limiting plates through a sliding assembly and can slide along the length direction of the limiting plates.

[0017] The sliding assembly is equipped with a first telescopic cylinder for moving the clamping plate toward the other clamping plate. In this design, two limiting plates are used to support the two clamping plates respectively, allowing the clamping plates to slide out or into the limiting plates via the sliding assembly, thereby shortening the overall length of the mechanism when not clamped. The two clamping plates are arranged opposite each other. When the adhesive side of the packaging box is positioned between the two clamping plates, the clamping plates are extended, so that one clamping plate is located outside the adhesive side and the other clamping plate extends into the inner side of the adhesive side. Subsequently, under the separate action of the two first telescopic cylinders, they achieve opposing clamping.

[0018] To further optimize the sliding of the clamping plate, the sliding assembly includes a second slider. The limiting plate has an elongated hole along its own length. The second slider is slidably connected to the elongated hole and can slide along the length of the elongated hole.

[0019] The second slider has through holes on both sides of the elongated hole, and the side wall of the clamping plate has a sliding rod that can slide through the through hole;

[0020] The second slider has a bracket connected to its end outside the limiting plate. The bracket is used to fix the first telescopic cylinder. The output end of the first telescopic cylinder is connected to the part of the slide rod extending out of the through hole, and is used to drive the slide rod to extend and retract. In this design, the second slider can have grooves on the upper and lower sides of the middle position so that the upper and lower sides of the elongated hole can be engaged in the grooves to achieve stable sliding. Secondly, a through hole is opened in the second slider, which extends through both ends of the second slider to facilitate matching with the slide rod on the clamping plate. The slide rod can pass through the through hole and extend a sufficient length so that the first telescopic cylinder can drive the slide rod to move axially along the through hole to achieve the opposite clamping of the clamping plate.

[0021] Further optimization, to provide cushioning for the clamping plate, a spring is sleeved on the part of the slide rod extending out of the through hole, and the end of the slide rod extending out of the through hole has a large diameter end, and the two ends of the spring are respectively used to connect the large diameter end and the second slider;

[0022] The output end of the first telescopic cylinder abuts against the large-diameter end; and the bracket has several guide rods, all of which are slidably connected to the large-diameter end and parallel to the slide rod.

[0023] To further optimize the clamping plate and achieve stable sliding, as well as its extension and retraction, at least two second sliders are slidably connected along the length of the elongated hole. The sidewall of the clamping plate has a matching number of sliding rods, each of which is used to slide through a second slider.

[0024] A first push cylinder is connected between the second slider closest to the first slider and the first slider, and the first push cylinder is used to drive the second slider to slide.

[0025] Further optimization, as a specific structure of the rotary drive unit, the rotary drive unit includes a rotary column; the first slider has a receiving groove on its side, and the rotary column is rotatably connected to the receiving groove;

[0026] The first slider has a drive component for rotating the rotating column around its own axis; the ends of the two limiting plates are connected to the outer end of the rotating column, and the two clamping plates are positioned eccentrically relative to the rotating column. In this design, the rotating column is embedded in the first slider and can rotate around its own axis; the first pushing cylinder is connected between the second slider and the rotating column, allowing the first pushing cylinder to rotate synchronously with the rotating column; the first slider also has a drive component, which drives the rotating column to reciprocate, thereby achieving pre-folding. A position sensor is embedded in the center of the end face of the rotating column. This position sensor is used to monitor whether the front side (adhesive side) of the packaging box has moved into place, and this monitored position is flush with the bottom of the packaging box during the initial adjustment process.

[0027] To further optimize the system and achieve stable rotation of the rotating column, as well as precise control of its rotation angle, a collar and a gear are coaxially mounted on the circumferential sidewall of the rotating column.

[0028] The inner side of the receiving groove is provided with a circumferential sliding groove, the collar and the circumferential sliding groove are adapted to each other, and can slide in the circumferential sliding groove.

[0029] The first slider also has a long sliding groove that runs through both sides of itself. The long sliding groove is perpendicular to the axis of the rotating column. A rack is slidably connected to the long sliding groove. Both ends of the rack extend out of the long sliding groove, and the rack and the gear mesh with each other.

[0030] The driving component employs a second push cylinder. The output end of the second push cylinder is connected to one end of the rack via a connecting plate, and is used to drive the rack to reciprocate along its own length. In this design, the dimensions of the collar and the circumferential sliding groove are matched, and both are smooth sliding surfaces to reduce frictional resistance. By driving the rack to move back and forth through the second push cylinder, the reciprocating rotation of the meshing gears can be controlled, similar to a speed reducer. This allows for precise control of the rotation angle, enabling the bonded side to rotate back and forth within the range of -60° to +60°.

[0031] To further optimize the pre-folding efficiency, the first slide rail is an annular slide rail, on which a plurality of first sliders are sequentially arranged.

[0032] The support platform is also provided with a ring chain, which is arranged along the length direction of the first slide rail and located inside the first slide rail. Each first slider is fixedly connected to the ring chain.

[0033] Several drive gears are evenly distributed on the inner side of the annular chain, and each drive gear meshes with the annular chain for transmission. In this scheme, the support platform can be set as a square platform, the first slide rail can be set as an annular slide rail, and each first slider can be driven to move synchronously through the annular chain. In this way, conveyor lines can be set on opposite sides of the support platform. The two opposite conveyor lines have opposite conveying directions but the same structure, so as to improve the pre-folding efficiency through multiple conveyor lines.

[0034] Further solutions:

[0035] This invention provides a pressure-holding pre-folding method for a pharmaceutical packaging box gluing machine, comprising the following steps:

[0036] S1: The folded and glued packaging boxes are placed sequentially on the conveyor line through the transfer mechanism, with the openings at both ends of the packaging boxes facing the sides of the conveyor line.

[0037] S2: Control the conveyor line to advance sequentially. When the packaging box moves to face the clamping component, the conveyor line stops. The lateral moving unit drives the clamping component to move towards the packaging box, so that the clamping component clamps the glued sides of the packaging box inwards.

[0038] S3: Then control the telescopic pressure plate in the pressing mechanism to descend and press down on the top of the packaging box;

[0039] S4: At this time, the rotation drive component drives the clamping component to rotate back and forth, so that the packaging box is folded back and forth at a certain angle to achieve the reciprocating deformation of the packaging box from a square to a parallelogram; among them, the telescopic pressure plate can move synchronously with the upper end of the packaging box under the drive of the lifting component and the sliding component, and always presses on the upper end of the packaging box.

[0040] S5: The packaging box is then conveyed forward via the conveyor line. The pre-folding mechanism holds the box and moves synchronously, while the telescopic pressure plate rises and detaches from the packaging box.

[0041] S6: When the next packaging box is facing another clamping component, repeat step S2 so that the other clamping component clamps the facing packaging box. Then repeat steps S3 and S4 while pre-folding the two packaging boxes.

[0042] S7: Repeat step S6 to pre-fold each package on the conveyor line using the pre-folding mechanism; when the package needs to be removed from the conveyor line, the clamping component retracts to release the package.

[0043] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0044] 1. This invention provides a pharmaceutical packaging box gluing machine and its pressure-holding pre-folding method. The clamping component always holds the glued sides inside, maintaining pressure at the glued position to allow the adhesive to dry within a certain time, preventing it from peeling off. Secondly, by pre-folding the packaging box, it allows the box to adapt to deformation in advance, reducing the impact of deformation on the glued position and minimizing the risk of misalignment during flattening at the stacking location.

[0045] 2. The present invention provides a box gluing machine for pharmaceutical packaging and its pressure-holding and pre-folding method, wherein two limiting plates are used to support two clamping plates respectively, so that the clamping plates can slide out or slide into the limiting plates through the sliding assembly, thereby shortening the length of the entire mechanism when not clamped.

[0046] 3. The present invention provides a pharmaceutical packaging box gluing machine and its pressure-holding and pre-folding method, wherein the dimensions of the collar and the circumferential sliding groove are matched, and both are smooth sliding surfaces to reduce frictional resistance. A second push cylinder drives the rack to move back and forth, controlling the reciprocating rotation of the meshing gears, similar to a speed reducer, allowing precise control of the rotation angle.

[0047] 4. The present invention provides a box gluing machine for pharmaceutical packaging and its pressure-holding and pre-folding method, wherein the support platform can be set as a square platform, the first slide rail can be set as an annular slide rail, and each first slider can be driven to move synchronously by an annular chain. In this way, conveyor lines can be set on both sides of the support platform. The two opposite conveyor lines have opposite conveying directions but the same structure, so as to improve the pre-folding efficiency by using multiple conveyor lines. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0049] Figure 1 This is a diagram of the packaging box before it is folded.

[0050] Figure 2 This is a diagram showing the packaging box after it has been folded and glued together.

[0051] Figure 3 This is a schematic diagram showing the distribution of the pressing mechanism and the pre-folding mechanism in the box-gluing machine provided by the present invention;

[0052] Figure 4 A schematic diagram of the pre-folding mechanism provided by the present invention;

[0053] Figure 5 Provided by the present invention Figure 4 Enlarged view of point A in the middle;

[0054] Figure 6 A schematic diagram illustrating the pre-folding principle of the packaging box provided by this invention;

[0055] Figure 7 A schematic diagram showing the relative positions of the gear and the clamping plate provided by the present invention;

[0056] Figure 8 This is a simplified top view of the pre-folding mechanism provided by the present invention.

[0057] The attached diagram shows the markings and corresponding component names:

[0058] 1-Conveyor line, 2-Packaging box, 3-Pressure holding mechanism, 301-Telescopic pressure plate, 302-Second telescopic cylinder, 303-Support plate, 304-Third slider, 305-Third slide rail, 4-Pre-folding mechanism, 401-Support platform, 402-First slide rail, 403-First slider, 404-Limiting plate, 4041-Elongated hole, 405-Clamping plate, 406-First telescopic cylinder, 407-Second slider, 408-Slide rod, 409-Spring, 410-Guide rod, 411-First push cylinder, 412-Rotating column, 4121-Brace, 4122-Gear, 413-Rack, 414-Second push cylinder, 415-Connecting plate, 416-Drive gear, 417-Annular chain, 418-Bracket. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0060] Example 1: This Example 1 provides a medicine packaging box gluing machine, such as... Figures 1-8 As shown, it includes:

[0061] Conveyor line 1, which is used to sequentially convey folded and shaped packaging boxes 2;

[0062] The pressing mechanism 3 includes a telescopic pressing plate 301 located directly above the conveyor line 1. The upper side of the telescopic pressing plate 301 is connected by a lifting component and a sliding component. The sliding component is used to drive the lifting component to move back and forth along the conveying direction of the conveyor line 1. The lifting component is used to drive the telescopic pressing plate 301 to lift and press the top of the packaging box 2.

[0063] A pre-folding mechanism 4 is located on one side of the conveyor line 1. The pre-folding mechanism 4 includes a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit drives the transverse moving unit to move synchronously along the conveying direction of the conveyor line 1. The transverse moving unit drives the clamping assembly to move away from or towards the packaging box 2. The clamping assembly clamps the already glued sides of the packaging box 2 inwards.

[0064] The rotary drive unit is used to drive the clamping assembly to reciprocate. The reciprocating rotation direction includes the direction towards the conveying direction of the packaging box 2 and the direction away from the conveying direction of the packaging box 2, and the rotation center is directly opposite the lower end of the glued side of the packaging box 2.

[0065] Compared to existing technologies where directly flattening the glued boxes for stacking can lead to misalignment at the bonding points, this invention provides a box gluing machine for pharmaceutical packaging 2 and its pressure-holding and pre-folding method. This solution allows the bonding points to quickly adapt to the box's own deformation through pressure holding and pre-deformation, thus preventing misalignment during flattening at the stacking points. Specifically, the solution includes a conveyor line 1, a pressing mechanism 3, and a pre-folding mechanism 4. The gluing component first applies glue to one side of the cardboard, then conveys it to the folding component for folding. The folded box is then placed on the conveyor line 1, a standard technique. A reversing mechanism is also provided on the conveyor line 1 to change the orientation of the box, ensuring the open ends face both sides of the conveyor line 1. This reversing mechanism is also a conventional technique and will not be elaborated further. The conveyor line 1 is a step-type conveyor. In this scheme, the pre-folding of the packaging box 2 is mainly achieved through the pressing mechanism 3 and the pre-folding mechanism 4. The pressing mechanism 3 is located directly above the conveyor line 1 and is fixed to the panel frame above it. The panel frame is connected to the telescopic pressure plate 301 in sequence through the sliding component and the lifting component, so that the telescopic pressure plate 301 can press on the upper end of the packaging box 2 and move synchronously with the pre-folding process of the packaging box 2. During the pre-folding process, it always presses on the upper end of the packaging box 2 to prevent the packaging box 2 from falling off the conveyor line 1 during the pre-folding process. During the pre-folding, a certain downward pressure is applied to make the packaging box 2 more easily deformed. Secondly, the pre-folding mechanism 4 includes a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit drives multiple transverse moving units to move longitudinally to achieve synchronous displacement with the conveyor line 1. The transverse moving unit drives the clamping assembly to move transversely to clamp the glued sides of the packaging box 2 in opposite directions. Multiple clamping assemblies can clamp multiple packaging boxes 2 simultaneously. After clamping, the rotary drive unit drives the clamping assembly to rotate back and forth, and in conjunction with the pressing mechanism 3, to achieve reciprocating pre-folding of the packaging box 2.

[0066] Throughout the process described above, the clamping assembly consistently holds the bonded side within its grip, maintaining pressure at the bonding location to allow the adhesive to dry within a certain timeframe and prevent it from peeling off. Secondly, by pre-folding the packaging box 2, it allows the box to adapt to deformation in advance, reducing the impact of deformation on the bonding location and minimizing the risk of misalignment during flattening at the stacking position. Furthermore, the rotation center is aligned with the lower end of the bonded side of the packaging box 2, ensuring that the clamping assembly and the bonded side are located at the same rotation center.

[0067] Example 2: Based on Example 1, Example 2 further provides a specific mechanism for the pre-folding mechanism 4, such as... Figures 3-8 As shown.

[0068] In this embodiment, as Figure 3As shown, the specific structure of the longitudinal moving unit includes a support platform 401, a first slide rail 402, and a first slider 403. The first slide rail 402 is fixed to the support platform 401 and is arranged along the conveying direction of the conveyor line 1. The first slider 403 and the first slide rail 402 are slidably connected. The transverse moving unit is arranged on the first slider 403. In this scheme, a plurality of first sliders 403 can be sequentially arranged on the first slide rail 402 to simultaneously clamp multiple packaging boxes 2; while the telescopic pressure plate 301 can simultaneously press down multiple packaging boxes 2.

[0069] In this embodiment, as Figure 4 As shown, as a specific structure of the lateral movement unit, the lateral movement unit includes two fixed limiting plates 404. The two limiting plates 404 are arranged opposite to each other and are both connected to the first slider 403. The length direction of the limiting plates 404 is towards the conveyor line 1.

[0070] The clamping assembly includes two clamping plates 405 arranged opposite to each other. Each of the two limiting plates 404 has a clamping plate 405 on its opposite surface. The clamping plates 405 are slidably connected to the limiting plates 404 through a sliding assembly and can slide along the length direction of the limiting plates 404.

[0071] The sliding assembly is equipped with a first telescopic cylinder 406 for moving the clamping plate 405 toward the other clamping plate 405. In this design, two limiting plates 404 are used to support the two clamping plates 405 respectively, allowing the clamping plates 405 to slide out or into the limiting plates 404 via the sliding assembly, thereby shortening the overall length of the mechanism when not clamped. The two clamping plates 405 are arranged opposite each other. When the adhesive side of the packaging box 2 is positioned between the two clamping plates 405, the clamping plates 405 are extended, so that one clamping plate 405 is located outside the adhesive side and the other clamping plate 405 extends into the inner side of the adhesive side. Then, under the respective drive of the two first telescopic cylinders 406, they achieve opposing clamping.

[0072] In this embodiment, in order to realize the sliding of the clamping plate 405, the sliding assembly includes a second slider 407, and the limiting plate 404 has an elongated hole 4041 along its own length direction. The second slider 407 and the elongated hole 4041 are slidably connected and can slide along the length direction of the elongated hole 4041.

[0073] The second slider 407 has through holes on both sides of the elongated hole 4041, and the side wall of the clamping plate 405 has a sliding rod 408, which can slide through the through hole.

[0074] The second slider 407 is connected to a bracket 418 at its end outside the limiting plate 404. The bracket 418 is used to fix the first telescopic cylinder 406. The output end of the first telescopic cylinder 406 is connected to the part of the slide rod 408 that extends out of the through hole and is used to drive the slide rod 408 to extend and retract. In this solution, the second slider 407 can be provided with sliding grooves on the upper and lower sides of the middle position so that the upper and lower sides of the elongated hole 4041 can be inserted into the sliding grooves to achieve stable sliding. Secondly, a through hole is opened in the second slider 407, which extends through both ends of the second slider 407 so as to adapt to the slide rod 408 on the clamping plate 405. The slide rod 408 can pass through the through hole and extend a sufficient length so that the first telescopic cylinder 406 can drive the slide rod 408 to move axially along the through hole to achieve the opposite clamping of the clamping plate 405.

[0075] In this embodiment, in order to provide buffer for the clamping plate 405, a spring 409 is sleeved on the part of the slide rod 408 that extends out of the through hole, and the end of the slide rod 408 that extends out of the through hole has a large diameter end. The two ends of the spring 409 are respectively used to connect the large diameter end and the second slider 407.

[0076] The output end of the first telescopic cylinder 406 abuts against the large-diameter end; and the bracket 418 has a plurality of guide rods 410, all of which are slidably connected to the large-diameter end and parallel to the slide rod 408.

[0077] In this embodiment, in order to achieve stable sliding of the clamping plate 405, as well as the extension and retraction of the clamping plate 405, at least two second sliders 407 are slidably connected along the length direction of the elongated hole 4041. The side wall of the clamping plate 405 is provided with a matching number of sliding rods 408, and each sliding rod 408 is used to slide through a second slider 407.

[0078] A first push cylinder 411 is connected between the second slider 407 closest to the first slider 403 and the first slider 403. The first push cylinder 411 is used to drive the second slider 407 to slide.

[0079] In this embodiment, as a specific structure of the rotary drive unit, the rotary drive unit includes a rotary column 412; the first slider 403 has a receiving groove on its side, and the rotary column 412 is rotatably connected to the receiving groove.

[0080] The first slider 403 has a drive component for rotating the rotating column 412 around its own axis; the ends of the two limiting plates 404 are connected to the outer end of the rotating column 412, and the two clamping plates 405 are eccentrically positioned relative to the rotating column 412. In this design, the rotating column 412 is embedded in the first slider 403 and can rotate around its own axis; the first pushing cylinder 411 is connected between the second slider 407 and the rotating column 412, so that the first pushing cylinder 411 can rotate synchronously with the rotating column 412; the first slider 403 also has a drive component, which can drive the rotating column 412 to reciprocate to achieve pre-folding. A position sensor is embedded in the center of the end face of the rotating column 412. This position sensor is used to monitor whether the front side (adhesive side) of the packaging box 2 has moved into place, and this monitored position is flush with the bottom of the packaging box 2 during the initial adjustment process.

[0081] In this embodiment, in order to achieve stable rotation of the rotating column 412 and to precisely control the rotation angle of the rotating column 412, a collar 4121 and a gear 4122 are coaxially provided on the circumferential sidewall of the rotating column 412.

[0082] The inner side of the receiving groove is provided with a circumferential sliding groove, and the collar 4121 is adapted to the circumferential sliding groove and can slide in the circumferential sliding groove.

[0083] The first slider 403 is also provided with a long slide groove that runs through both sides of itself. The long slide groove is perpendicular to the axis of the rotating column 412. A rack 413 is slidably connected to the long slide groove. Both ends of the rack 413 extend out of the long slide groove, and the rack 413 and the gear 4122 mesh with each other.

[0084] The driving component is a second push cylinder 414. The output end of the second push cylinder 414 is connected to one end of the rack 413 via a connecting plate 415, and is used to drive the rack 413 along its own axis.

[0085] The shaft moves back and forth along its length. In this design, the dimensions of the collar 4121 and the circumferential sliding groove are matched, and both are smooth sliding surfaces to reduce frictional resistance. The second push cylinder 414 drives the rack 413 to move back and forth, which controls the reciprocating rotation of the meshing gear 4122, similar to a speed reducer. This allows for precise control of the rotation angle, enabling the bonded side to rotate back and forth within the range of -60° to +60°.

[0086] In this embodiment, as Figure 8 As shown, in order to improve the pre-folding efficiency, the first slide rail 402 is an annular slide rail, and a plurality of first sliders 403 are sequentially arranged on the annular slide rail;

[0087] The support platform 401 is also provided with an annular chain 417. The annular chain 417 is arranged along the length direction of the first slide rail 402 and is located inside the first slide rail 402. Each first slider 403 is fixedly connected to the annular chain 417.

[0088] Several drive gears 416 are evenly distributed on the inner side of the annular chain 417, and each drive gear 416 meshes with the annular chain 417 for transmission. In this scheme, the support platform 401 can be set as a square platform, the first slide rail 402 can be set as an annular slide rail, and each first slider 403 can be driven to move synchronously through the annular chain 417. In this way, conveyor lines 1 can be set on opposite sides of the support platform 401. The two opposite conveyor lines 1 have opposite conveying directions, but the structures are the same, so as to improve the pre-folding efficiency through multiple conveyor lines 1.

[0089] Example 3: This Example 3 also provides a pressure-holding pre-folding method for a pharmaceutical packaging box gluing machine, including the following specific working principles:

[0090] Step 1: First, the folded and glued packaging boxes 2 are placed sequentially on the conveyor line 1 through the existing transfer mechanism. The conveyor line 1 is equipped with a reversing mechanism so that the openings at both ends of the packaging boxes 2 face the two sides of the conveyor line 1.

[0091] Step 2: Then, control the conveyor line 1 to advance sequentially. When the front side (bonded side) of the packaging box 2 moves to the position sensor directly opposite the center of the rotating column 412, the conveyor line 1 stops. Through the two first push cylinders 411, the two clamping plates 405 are moved towards the packaging box 2 in a synchronized manner, so that one clamping plate 405 is located outside the bonded side and the other clamping plate 405 extends into the inside of the bonded side. Then, under the separate drive of the two first telescopic cylinders 406, they achieve opposite clamping.

[0092] Step 3: Control the second telescopic cylinder 302 in the pressing mechanism 3 to drive the telescopic pressure plate 301 down, so that the telescopic pressure plate 301 presses down on the upper end of the packaging box 2.

[0093] Step 4: At this time, control the second push cylinder 414 to drive the rack 413 to move back and forth, so that the rotating column 412 drives the clamping plate 405 to rotate back and forth. The clamping plate 405 also drives the glued side to deflect back and forth, so that the packaging box 2 is folded forward and backward at a certain angle to realize the reciprocating deformation of the packaging box 2 from square to parallelogram. Among them, the telescopic pressure plate 301 can move back and forth and rise and fall synchronously with the upper end of the packaging box 2 under the drive of the second telescopic cylinder 302 and the third slider 304, so as to always press on the upper end of the packaging box 2.

[0094] Step 5: Then, the packaging box 2 continues to be conveyed forward through the conveyor line 1. The clamping plate 405 keeps clamping and moves synchronously, while the telescopic pressure plate 301 rises and disengages from the packaging box 2.

[0095] Step 6: When the next packaging box 2 is facing another clamping component, repeat step 2 so that the other clamping component clamps the facing packaging box 2. Then repeat steps 3 and 4, while pre-folding the two packaging boxes 2.

[0096] Step 7: Repeat step 6. Each packaging box 2 on the conveyor line 1 can be pre-folded by the pre-folding mechanism 4. The telescopic pressure plate 301 is set along the length of the conveyor line 1 and can press down the upper end of several packaging boxes 2 simultaneously. That is, each step can achieve the pre-folding of each packaging box 2 on the conveyor line 1.

[0097] When the packaging box 2 needs to be removed from the conveyor line 1, the clamping assembly retracts to release the packaging box 2.

[0098] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A box gluing machine for pharmaceutical packaging, characterized in that, include: A conveyor line (1) is used to sequentially transport folded and shaped packaging boxes (2); The pressing mechanism (3) includes a telescopic pressing plate (301) located directly above the conveyor line (1). The upper side of the telescopic pressing plate (301) is connected by a lifting assembly and a sliding assembly. The sliding assembly is used to drive the lifting assembly to move back and forth along the conveying direction of the conveyor line (1). The lifting assembly is used to drive the telescopic pressing plate (301) to lift and press the top of the packaging box (2). A pre-folding mechanism (4) is located on one side of the conveyor line (1). The pre-folding mechanism (4) includes a longitudinal moving unit, a transverse moving unit, a clamping assembly, and a rotary drive unit. The longitudinal moving unit is used to drive the transverse moving unit to move synchronously along the conveying direction of the conveyor line (1). The transverse moving unit is used to drive the clamping assembly to move away from or closer to the packaging box (2). The clamping assembly is used to clamp the already glued sides of the packaging box (2) inwards. The rotary drive unit is used to drive the clamping assembly to rotate back and forth. The direction of the rotation includes the direction of conveying the packaging box (2) and the direction of conveying away from the packaging box (2), and the center of rotation is directly opposite to the lower end of the glued side of the packaging box (2).

2. The medicine packing box pasting machine according to claim 1, wherein The longitudinal moving unit includes a support platform (401), a first slide rail (402) and a first slider (403). The first slide rail (402) is fixed on the support platform (401) and is arranged along the conveying direction of the conveying line (1). The first slider (403) and the first slide rail (402) are slidably connected. The transverse moving unit is arranged on the first slider (403).

3. The medicine packing box pasting machine according to claim 2, wherein The lateral movement unit includes two fixed limiting plates (404), which are arranged opposite to each other and are both connected to the first slider (403). The length direction of the limiting plates (404) is towards the conveyor line (1). The clamping assembly includes two clamping plates (405) arranged opposite to each other. Each of the two limiting plates (404) has a clamping plate (405) on its opposite surface. The clamping plates (405) are slidably connected to the limiting plates (404) through a sliding assembly and can slide along the length direction of the limiting plates (404). The sliding assembly has a first telescopic cylinder (406) for moving the clamping plate (405) toward another clamping plate (405).

4. The medicine packing box pasting machine according to claim 3, wherein The sliding assembly includes a second slider (407), and the limiting plate (404) has an elongated hole (4041) along its own length direction. The second slider (407) and the elongated hole (4041) are slidably connected and can slide along the length direction of the elongated hole (4041). The second slider (407) has through holes on both sides of the elongated hole (4041), and the side wall of the clamping plate (405) has a sliding rod (408), which can slide through the through hole; The second slider (407) is connected to a bracket (418) at the end outside the limiting plate (404). The bracket (418) is used to fix the first telescopic cylinder (406). The output end of the first telescopic cylinder (406) is connected to the part of the slide rod (408) that extends out of the through hole, and is used to drive the slide rod (408) to extend and retract.

5. The medicine packing box pasting machine according to claim 4, wherein A spring (409) is sleeved on the part of the slide rod (408) that extends out of the through hole, and the end of the slide rod (408) that extends out of the through hole has a large diameter end. The two ends of the spring (409) are respectively used to connect the large diameter end and the second slide block (407). The output end of the first telescopic cylinder (406) abuts against the large-diameter end; and the bracket (418) has a number of guide rods (410), all of which are slidably connected to the large-diameter end and parallel to the slide rod (408).

6. A box-gluing machine for pharmaceutical packaging according to claim 4, characterized in that, At least two second sliders (407) are slidably connected in sequence along the length of the elongated hole (4041). The side wall of the clamping plate (405) has a matching number of sliding rods (408), each of which is used to slide through a second slider (407). A first push cylinder (411) is connected between the second slider (407) closest to the first slider (403) and the first slider (403), and the first push cylinder (411) is used to drive the second slider (407) to slide.

7. The medicine packing box pasting machine according to claim 3, wherein The rotary drive unit includes a rotary column (412); the first slider (403) has a receiving groove on its side, and the rotary column (412) is rotatably connected to the receiving groove; The first slider (403) has a drive component for driving the rotating column (412) to rotate around its own axis; the ends of the two limiting plates (404) are connected to the outer end of the rotating column (412), and the two clamping plates (405) are eccentrically positioned relative to the rotating column (412).

8. The medicine packing box pasting machine according to claim 7, wherein The rotating column (412) has a collar (4121) and a gear (4122) coaxially arranged on its circumferential sidewall. The inner side of the receiving groove is provided with a circumferential sliding groove, and the collar (4121) is adapted to the circumferential sliding groove and can slide in the circumferential sliding groove. The first slider (403) is also provided with a long strip groove that runs through both sides of itself. The long strip groove is perpendicular to the axis of the rotating column (412). A rack (413) is slidably connected to the long strip groove. Both ends of the rack (413) extend out of the long strip groove, and the rack (413) and the gear (4122) mesh with each other. The driving component adopts a second push cylinder (414). The output end of the second push cylinder (414) is connected to one end of the rack (413) through a connecting plate (415) and is used to drive the rack (413) to move back and forth along its own length direction.

9. The medicine packing box pasting machine according to claim 2, wherein The first slide rail (402) is an annular slide rail, and a plurality of first sliders (403) are sequentially arranged on the annular slide rail. The support platform (401) is also provided with an annular chain (417), which is arranged along the length direction of the first slide rail (402) and located inside the first slide rail (402). Each first slider (403) is fixedly connected to the annular chain (417). Several drive gears (416) are evenly distributed on the inner side of the ring chain (417), and each drive gear (416) meshes with the ring chain (417) for transmission.

10. The pressure maintaining and pre-folding method of claim any one of claims 1-9, wherein, Includes the following steps: S1: The folded and glued packaging boxes (2) are placed sequentially on the conveyor line (1) through the transfer mechanism. At this time, the openings at both ends of the packaging boxes (2) face the two sides of the conveyor line (1). S2: Control the conveyor line (1) to advance step by step. When the packaging box (2) moves to face the clamping component, the conveyor line (1) stops. The clamping component is driven to move towards the packaging box (2) through the lateral movement unit, so that the clamping component clamps the glued sides of the packaging box (2) in the same direction. S3: Then control the telescopic pressure plate (301) in the pressing mechanism (3) to descend and press down on the upper end of the packaging box (2); S4: At this time, the rotation drive component drives the clamping component to rotate back and forth, so that the packaging box (2) is folded back and forth at a certain angle to achieve the reciprocating deformation of the packaging box (2) from square to parallelogram; among them, the telescopic pressure plate (301) can move synchronously with the upper end of the packaging box (2) under the drive of the lifting component and the sliding component, and always presses on the upper end of the packaging box (2); S5: The packaging box (2) is then conveyed forward through the conveyor line (1), the pre-folding mechanism (4) holds it and moves synchronously, and the telescopic pressure plate (301) rises and disengages from the packaging box (2). S6: When the next packaging box (2) is facing another clamping component, repeat step S2 so that the other clamping component clamps the facing packaging box (2), then repeat steps S3 and S4, while pre-folding the two packaging boxes (2); S7: Repeat step S6 to pre-fold each package (2) on the conveyor line (1) by the pre-folding mechanism (4); when the package (2) needs to be removed from the conveyor line (1), the clamping component retracts to release the package (2).

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