Box blank forming device and method

Abstract

The invention provides a box blank forming device and method, relates to the field of cigarette packaging equipment, aims to solve the problem that a box sealing machine is not facilitated to be miniaturized due to the fact that existing box blank unfolding related assemblies and box blank placing positions occupy large space, and is adaptive to the layout that box blanks are stacked on the upper portion and the box blank forming device is located on the lower portion. The shear fork assembly drives the adsorption plate to adsorb and grab box blanks from the upper box blank stacking position, unfolding forming is achieved by making the box blanks abut against the forming plate in the downward moving process, the requirement for unfolding the box blanks to form a box body in the boxing process is met, the common occupied space of the box blank forming related assembly and the box blank stacking position is reduced, the occupied area is reduced, and the production efficiency is improved. Therefore, the miniaturization requirement of the carton sealing machine is met.

Description

Technical Field

[0001] The invention relates to the field of cigarette packing equipment, and in particular to a box blank forming device and method. Background Art

[0002] In the process of packing and sealing cigarette cartons in tobacco production, packing and sealing machines are mostly used for packing and sealing cigarette cartons. The feeding and conveying mechanism, clamping mechanism, and expansion mechanism are set on the side of the production line. The packing and sealing machine completes a series of operations such as stacking, clamping, conveying, unpacking, packing, and sealing of cigarette cartons through the sequential arrangement and cooperation of various structural parts.

[0003] A Chinese patent (publication number CN117922893 A) discloses a device for sealing cigarette cartons at an angle. The device integrates a stacking mechanism, a clamping mechanism and a carton rotating mechanism through a frame. The three are arranged in a reasonable position. The clamping mechanism is located on one side of the stacking mechanism. The clamping mechanism can rotate toward the carton rotating mechanism. The carton rotating mechanism can rotate in the direction of the clamping mechanism. The cigarette cartons or cigarette stacks clamped by the clamping assembly can be sent into the carton under the drive of the linear drive assembly. The device can clamp the cigarette cartons or cigarette stacks and put them into the carton smoothly. The device has a reasonable structure and utilizes the height space to complete the clamping and sending of cigarette cartons or cigarette stacks, so that the device occupies a small area. However, the cigarette strip conveying and stacking positions are arranged at a high place, and the box blanks are stored in a vertical and horizontal cumulative manner and placed in a lower position. The suction cups and box blanks are horizontally spaced apart, and the carton is opened when the box blanks are grabbed and formed. The structure inside the frame is relatively complex, and interference is easily present between the various components, which increases the difficulty of configuring the frame components. The distribution position of the suction cups and box blanks also increases the occupied space, resulting in a large footprint. This makes the overall footprint of the carton filling and sealing machine large, making it difficult to meet the miniaturization requirements of the carton filling and sealing machine. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a box blank forming device and method, which is suitable for a layout in which the box blanks are stacked on top and the box blank forming device is located below. The scissor assembly drives the adsorption plate to adsorb and grab the box blanks from the box blank stacking position above, and the box blanks are unfolded and formed by abutting the forming plate during the downward movement, thereby meeting the requirements of the packing process for unfolding the box blanks to form a box body, and reducing the space occupied by the box blank forming-related components and the box blank stacking position, thereby reducing the floor space and meeting the miniaturization requirements of the carton sealing machine.

[0005] The first object of the present invention is to provide a box blank forming device, which adopts the following scheme:

[0006] It includes a base frame, a scissors-fork assembly, an adsorption plate and a forming plate. One end of the scissors-fork assembly is installed on the base frame, and the other end is connected to the adsorption plate. The forming plate and the adsorption plate are spaced apart. A driving mechanism for driving the scissors-fork assembly is installed on the base frame. One place on the adsorption plate is hinged to the scissors-fork assembly, and the other place is slidingly connected to the scissors-fork assembly to adjust the distance and angle between the adsorption plate and the forming plate. A suction cup for adsorbing the box blank is provided on the adsorption plate, and the forming plate is provided with an arc-shaped guide section and a limiting section connected to the base frame. The guide section is used to abut the box blank and push the box blank to unfold, and the limiting section is used to maintain the posture of the box blank after unfolding.

[0007] Furthermore, the scissors assembly includes a first scissors arm and a second scissors arm that are rotatably connected, one end of the first scissors arm is hinged to the base, and the other end is hinged to the guide block, and the guide block slides with the adsorption plate; one end of the second scissors arm is hinged to the adsorption plate, and the other end is connected to the driving mechanism.

[0008] Furthermore, a guide rail is provided on the adsorption plate, and the guide block is slidably matched with the guide rail so that the first scissor arm is slidably connected to the adsorption plate.

[0009] Furthermore, the driving mechanism includes a screw slider mechanism and a driving element. The screw slider mechanism includes a screw and a slider that cooperate to form a screw pair. The screw is installed on the base frame through a rotating support. The driving element inputs power into the screw, and the slider serves as the output end of the driving mechanism to drive the scissors assembly.

[0010] Furthermore, the base frame is provided with a guide rail arranged parallel to the lead screw, and the two sides of the slider are respectively slidably matched with the guide rail.

[0011] Furthermore, the output end of the driving element is connected to an active synchronous pulley, the lead screw cooperates with a passive synchronous pulley, and the active synchronous pulley and the passive synchronous pulley cooperate with the synchronous belt to transmit the power.

[0012] Furthermore, one end of the guide segment is butted against the limiting segment, the limiting segment is distributed along the tangent direction of the connection position between the limiting segment and the guide segment, and the arc-shaped convex side of the guide segment faces the adsorption plate.

[0013] Furthermore, the adsorption plate is provided with a plurality of suction cups, which are located on a side away from the adsorption plate connected to the scissor-fork assembly. An ear plate with a hole is provided at one end of the adsorption plate, and the scissor-fork assembly is hinged by cooperating with the ear plate with a hole through a pin shaft.

[0014] The second object of the present invention is to provide a working method of the box blank forming device as described in the first object, comprising:

[0015] The driving mechanism drives the scissor mechanism to move, so that the suction plate moves away from the bottom frame and sucks and grabs the box blank;

[0016] The driving mechanism drives the scissor mechanism to move in the reverse direction, driving the suction plate to carry the box blank to move towards the bottom frame and contact the guide section of the forming plate;

[0017] As the suction plate carries the box blank close to the bottom frame, the guide section abuts against one end of the box blank, causing the box blank to gradually unfold;

[0018] When the box blank moves to the contact limiting section, the box blank is fully unfolded and the limiting section is used to maintain the unfolded posture of the box blank, thereby realizing the box blank forming.

[0019] Furthermore, after the box blank contacts the guide section, the box blank is gradually unfolded along the fold under the action of the abutting guide section to form a box-shaped structure; after the box blank is formed, it is packed, and after the packing is completed and removed, the suction plate absorbs and grabs the next box blank.

[0020] Compared with the prior art, the present invention has the following advantages and positive effects:

[0021] (1) In view of the problem that the current components related to box blank unfolding and the box blank placement position occupy a large space, which is not conducive to the miniaturization of the carton sealing machine, a layout is adapted in which the box blanks are stacked on the top and the box blank forming device is placed on the bottom. The scissor-fork assembly drives the adsorption plate to adsorb and grab the box blanks from the box blank stacking position on the top. During the downward movement, the box blanks abut against the forming plate to achieve unfolding and forming, thereby meeting the requirements of the packing process for unfolding the box blanks to form a box body, and reducing the space occupied by the components related to the box blank forming and the box blank stacking position, thereby reducing the floor space and meeting the miniaturization requirements of the carton sealing machine.

[0022] (2) When the first scissor arm and the second scissor arm rotate relative to each other, the suction plate connected thereto can be raised and lowered relative to the base frame. At the same time, due to the sliding fit between the guide block and the guide rail and the hinged structure between the suction plate and the second scissor arm, the suction plate will also rotate during the lifting and lowering, thereby adjusting the angle between the plane where the suction plate is located and the horizontal plane. The suction plate can contact and adsorb the box blank stored in the box blank material bin in an inclined posture when it is raised to contact and adsorb the box blank in an inclined posture, and when it descends to drive the box blank to unfold and abut against the limit section, it can carry the box blank in a horizontal posture to meet the needs of box packing and folding and sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 Schematic diagram of the box blank forming device in Examples 1 and 2 of the present invention.

[0025] Figure 2 Schematic diagram of the base frame in Examples 1 and 2 of the present invention.

[0026] Figure 3 It is a schematic diagram of the operation of the box blank forming device in Examples 1 and 2 of the present invention to form a box blank.

[0027] Among them, 1. bottom plate; 2. vertical plate; 3. servo motor; 4. active synchronous pulley; 5. synchronous belt; 6. passive synchronous pulley; 7. lead screw; 8. rotating support; 9. lead screw pair; 10. guide rail; 11. first connecting rod; 12. second connecting rod; 13. rotating shaft; 14. pin shaft; 15. adsorption plate; 16. guide rail; 17. rotating sleeve; 18. ear plate with holes; 19. suction cup; 20. forming plate. DETAILED DESCRIPTION

[0028] Example 1

[0029] In a typical embodiment of the present invention, Figure 1-Figure 3 As shown, a box blank forming device is provided.

[0030] In the current cigarette carton sealing machine, the cigarette carton conveying and stacking positions are arranged at a high place, and the box blanks are stored at a lower position in a vertical and horizontal accumulation manner. This makes the structure in the frame more complicated, and the components are easy to interfere with each other, which increases the difficulty of configuration. In addition, due to the distribution position of the suction cup 19 and the box blanks, the overall footprint is large, which makes it difficult to meet the miniaturization requirements of the carton sealing machine. Based on this, this embodiment provides a box blank forming device, proposes a layout in which the box blanks are stacked on the top and the box blank forming device is on the bottom to simplify the structure and reduce the footprint, and uses the scissor assembly to drive the suction plate 15 to grab the box blank from above, and realizes the expansion and forming of the box blank through the forming plate 20 during the downward movement, thereby improving the expansion efficiency of the box blank and meeting the needs of the carton sealing machine.

[0031] like Figure 1 As shown, the box blank forming device mainly includes a base frame, a scissor assembly, a suction plate 15 and a forming plate 20, wherein the base frame serves as the supporting structure of the entire device, the scissor assembly is an X-shaped scissor structure, one end of the scissor assembly is mounted on the base frame, and the other end is connected to the suction plate 15, which is used to drive the suction plate 15 to move up and down. The suction plate 15 is provided with a suction cup 19 for sucking the box blank, one of which is hinged to the scissor assembly, and the other is slidably connected to the scissor assembly to adjust the spacing and angle with the forming plate 20, and the two positions are spaced apart to adapt to the scissor action of the scissor assembly. The forming plate 20 is spaced apart from the suction plate 15, and is provided with an arc-shaped guide section and a limit section connected to the base frame, the guide section is used to abut the box blank and push it to unfold, and the limit section is used to maintain the posture of the box blank after unfolding.

[0032] like Figure 3As shown, in actual use, a box blank material bin of the carton sealing machine is arranged above the box blank forming device, and the box blanks are stored in the box blank material bin. When working, the scissor assembly drives the adsorption plate 15 to move up and down under the drive of the driving mechanism. The adsorption plate 15 adsorbs and grabs the box blank from above and drives the box blank to move. During the downward movement, the box blank abuts against the guide section of the forming plate 20 and unfolds and forms. The unfolded box blank is maintained in position by the limiting section of the forming plate 20. The structure inside the frame is simplified, interference between components is avoided, and the configuration difficulty is reduced. By changing the layout of the box blank stacking and forming device, the box blank forming device is vertically integrated below the box blank material bin, which occupies a small space and can make full use of the internal space of the equipment, greatly saving the work site, reducing the overall floor space, and meeting the needs of miniaturization of the carton sealing machine. By using the cooperation of the scissor assembly and the forming plate 20, the grabbing and unfolding of the box blank is realized, and the work efficiency is improved.

[0033] like Figure 1 and Figure 2 As shown, the scissors assembly consists of a first scissors arm and a second scissors arm, and the angle between them is changed by a rotational connection, wherein the first scissors arm and the second scissors arm are rotationally matched through a rotating shaft 13, so that the first scissors arm and the second scissors arm are in an X-shaped structure, and the scissors assembly can perform a scissor-like action under the action of a driving force, and the entire scissors-like assembly can realize telescopic or folding action in the vertical direction, thereby realizing a lifting function, driving the adsorption plate 15 connected thereto to rise and fall.

[0034] One end of the first scissor arm is hinged to the base, and the other end is hinged to the guide block, which is slidably fitted on the adsorption plate 15. When the first scissor arm moves, it can drive the guide block to slide along the guide rail 16 on the adsorption plate 15. One end of the second scissor arm is hinged to the adsorption plate 15, and the other end is connected to the driving mechanism, which can drive the movement of the entire scissor assembly through the second scissor arm.

[0035] like Figure 3 As shown, a guide rail 16 is provided on the adsorption plate 15, and the guide block slidably cooperates with the guide rail 16, ensuring that the first scissor arm can slide steadily and smoothly on the adsorption plate 15, thereby realizing the lifting movement.

[0036] It should be noted that when the first scissor arm and the second scissor arm rotate relative to each other, the suction plate 15 connected thereto can be raised and lowered relative to the base frame. At the same time, due to the sliding fit between the guide block and the guide rail 16 and the hinged structure between the suction plate 15 and the second scissor arm, the suction plate 15 can also rotate while being raised and lowered, thereby adjusting the angle of the plane where the suction plate 15 is located relative to the horizontal plane. The suction plate 15 can contact and adsorb the box blank stored in the box blank bin in an inclined posture when it is raised to contact and adsorb the box blank in an inclined posture, and when it descends to drive the box blank to unfold and abut against the limit section, it can carry the box blank in a horizontal posture to meet the needs of box packing and folding and sealing.

[0037] like Figure 2 As shown, the core of the driving mechanism is the screw 7 slider mechanism, which is composed of a screw 7 and a slider to form a screw pair 9. The screw 7 is mounted on the base frame through a rotating support 8. After the power of the driving element is input into the screw 7, the rotational motion of the screw 7 is converted into the linear motion of the slider. The base frame is also provided with a guide rail 10 parallel to the screw 7, and the two sides of the slider are respectively slidably matched with the guide rail 10. This not only increases the stability of the slider, but also prevents the slider from deflecting during linear motion.

[0038] The output end of the driving element is connected to the active synchronous pulley 4, and the lead screw 7 cooperates with the passive synchronous pulley 6 to realize transmission through the synchronous belt 5. This transmission mode has the advantages of high transmission efficiency, low noise, and convenient maintenance. In this embodiment, the driving element can use a servo motor 3 to achieve precise control of the rotation of the lead screw 7.

[0039] One end of the guide section is butted against the limit section, and the limit section is tangentially distributed along the connection position between the limit section and the guide section. The stability and accuracy of the object during the lifting process are ensured. The arc-shaped convex side of the guide section faces the adsorption plate 15, which can provide a smooth push for the unfolding of the box blank. It can be understood that in other optional embodiments, the forming plate 20 can also be arranged in other positions, which can push the box blank to unfold and deform on the path where the adsorption plate 15 drives the box blank to move.

[0040] A plurality of suction cups 19 are provided on the suction plate 15, which are located on the side away from the suction plate 15 connected to the scissor assembly. The suction cups 19 can firmly absorb the object to prevent the object from slipping or shaking during the lifting process. The suction cups 19 can be connected to a negative pressure source, and the negative pressure is used to vacuum absorb the box blank attached to the suction cups 19.

[0041] One end of the suction plate 15 is provided with a perforated ear plate 18, and the scissor assembly is hinged with the perforated ear plate 18 through the pin 14, thereby ensuring a firm connection between the scissor assembly and the suction plate 15. Figure 1 As shown, two first scissor arms and two second scissor arms are respectively provided and are arranged in two groups at intervals. The two first scissor arms are arranged on both sides of the corresponding axis of the screw 7, and the second scissor arms are also arranged on both sides of the axis of the screw 7. The first scissor arms are hinged on the rotating sleeve 17 of the base frame to realize the rotation connection.

[0042] The coordinated work of the scissor assembly, the driving mechanism, the guide section and the limit section, and the suction cup 19 on the suction plate 15 realizes the smooth lifting and precise positioning of the object, which not only improves the work efficiency, but also ensures the safety and stability of the operation.

[0043] For the structure of the chassis, such as Figure 2As shown, the base frame is the basic support structure of the entire box blank suction forming device, which is mainly composed of a bottom plate 1, a vertical plate 2 and related connection and support components. The bottom plate 1 is the bottom foundation of the entire device, which is used to support and fix other components. The bottom plate 1 is a solid and flat plate to ensure the stability and load-bearing capacity of the entire device. The vertical plate 2 is vertically arranged on both sides of the bottom plate 1 to support and fix the servo motor 3, the lead screw 7 and other components. The height and position design of the vertical plate 2 must meet the lifting and suction requirements of the entire device, while ensuring the stability and rigidity of the structure.

[0044] The servo motor 3 is mounted on the side of the vertical plate 2, and is connected to the synchronous belt 5 through the active synchronous pulley 4 at the end of the output shaft. The synchronous belt 5 is then connected to the passive synchronous pulley 6, which is mounted on the end shaft of the lead screw 7. The transmission system ensures that the power of the servo motor 3 can be smoothly and accurately transmitted to the lead screw 7 to drive it to rotate.

[0045] Rotating supports 8 are respectively provided at the shaft end and tail of the lead screw 7 to support and fix the lead screw 7 to ensure its stable rotation. The lead screw 7 and the slider form a lead screw pair 9, the slider is installed in the middle of the lead screw 7, and the slider is hinged to the first scissor arm. When the lead screw 7 rotates, the slider will perform linear motion under the guidance of the lead screw 7 and the linear guide 16. The linear guide 16 is provided on both sides of the lead screw pair 9 to provide a stable linear motion guide to ensure the smooth and accurate movement of the slider.

[0046] The forming plate 20 is installed vertically, and the upper guide section is in an arc shape that bends outward to meet the forming requirements of the box blank.

[0047] The various components of the chassis structure cooperate with each other and work together to realize the functions of sucking, forming and lifting the box blank. The chassis not only ensures the stability and load-bearing capacity of the entire device, but also improves work efficiency and product quality.

[0048] Example 2

[0049] In another typical embodiment of the present invention, Figure 1-Figure 3 As shown, a working method of a box blank forming device is provided, using the box blank forming device as in Example 1.

[0050] A working method of a box blank forming device, comprising:

[0051] The driving mechanism drives the scissor mechanism to move, so that the suction plate 15 moves away from the bottom frame and sucks and grabs the box blank;

[0052] The driving mechanism drives the scissor mechanism to move in the reverse direction, driving the suction plate 15 to carry the box blank to move towards the bottom frame and contact the guide section of the forming plate 20;

[0053] As the suction plate 15 carries the box blank closer to the bottom frame, the guide section abuts against one end of the box blank, causing the box blank to gradually unfold;

[0054] When the box blank moves to the contact limiting section, the box blank is fully unfolded and the limiting section is used to maintain the unfolded posture of the box blank, thereby realizing the box blank forming.

[0055] After the box blank contacts the guide section, the box blank is gradually unfolded along the fold under the action of the abutting guide section to form a box-shaped structure; after the box blank is formed, it is packed, and after the packing is completed and removed, the suction plate 15 sucks and grabs the next box blank.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A box blank forming device, characterized in that: It includes a base frame, a scissors-fork assembly, an adsorption plate and a forming plate. One end of the scissors-fork assembly is installed on the base frame, and the other end is connected to the adsorption plate. The forming plate and the adsorption plate are spaced apart. A driving mechanism for driving the scissors-fork assembly is installed on the base frame. One place on the adsorption plate is hinged to the scissors-fork assembly, and the other place is slidingly connected to the scissors-fork assembly to adjust the distance and angle between the adsorption plate and the forming plate. A suction cup for adsorbing the box blank is provided on the adsorption plate, and the forming plate is provided with an arc-shaped guide section and a limiting section connected to the base frame. The guide section is used to abut the box blank and push the box blank to unfold, and the limiting section is used to maintain the posture of the box blank after unfolding.

2. The box blank forming device according to claim 1, characterized in that: The scissor assembly comprises a first scissor arm and a second scissor arm which are rotatably connected. One end of the first scissor arm is hinged to the base, and the other end is hinged to the guide block, which slides with the adsorption plate. One end of the second scissor arm is hinged to the adsorption plate, and the other end is connected to the driving mechanism.

3. The box blank forming device according to claim 2, characterized in that: The adsorption plate is provided with a guide rail, and the guide block is slidably matched with the guide rail so that the first scissor arm is slidably connected to the adsorption plate.

4. The box blank forming device according to claim 1, characterized in that: The driving mechanism includes a screw slider mechanism and a driving element. The screw slider mechanism includes a screw and a slider that cooperate to form a screw pair. The screw is installed on the base frame through a rotating support. The driving element inputs power into the screw, and the slider serves as the output end of the driving mechanism to drive the scissors assembly.

5. The box blank forming device according to claim 4, characterized in that: The base frame is provided with a guide rail arranged parallel to the lead screw, and both sides of the slide block are respectively slidably matched with the guide rail.

6. The box blank forming device according to claim 4 or 5, characterized in that: The output end of the driving element is connected to an active synchronous pulley, the lead screw cooperates with a passive synchronous pulley, and the active synchronous pulley and the passive synchronous pulley cooperate with the synchronous belt to transmit the power.

7. The box blank forming device according to claim 1, characterized in that: One end of the guide segment is butted against the limiting segment, the limiting segment is distributed along the tangent direction of the connection position between the limiting segment and the guide segment, and the arc-shaped convex side of the guide segment faces the adsorption plate.

8. The box blank forming device according to claim 1, characterized in that: The adsorption plate is provided with a plurality of suction cups, which are located on a side away from the adsorption plate connected to the scissor-fork assembly. An ear plate with a hole is provided at one end of the adsorption plate, and the scissor-fork assembly is hinged by cooperating with the ear plate with a hole through a pin shaft.

9. A method for operating a box blank forming device, using the box blank forming device as claimed in any one of claims 1 to 8, characterized in that: include: The driving mechanism drives the scissor mechanism to move, so that the suction plate moves away from the bottom frame and sucks and grabs the box blank; The driving mechanism drives the scissor mechanism to move in the reverse direction, driving the suction plate to carry the box blank to move towards the bottom frame and contact the guide section of the forming plate; As the suction plate carries the box blank close to the bottom frame, the guide section abuts against one end of the box blank, causing the box blank to gradually unfold; When the box blank moves to the contact limiting section, the box blank is fully unfolded and the limiting section is used to maintain the unfolded posture of the box blank, thereby realizing the box blank forming.

10. The working method of the box blank forming device according to claim 9, characterized in that: After the box blank contacts the guide section, the box blank is gradually unfolded along the fold under the action of the abutting guide section to form a box-shaped structure; after the box blank is formed, it is packed, and after the packing is completed and removed, the suction plate absorbs and grabs the next box blank.

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