Carton packaging machine and conveying equipment thereof

Abstract

The utility model provides a carton packaging machine and conveying equipment thereof. The conveying equipment comprises a conveying belt, the conveying belt comprises a belt body and first clamping parts arranged on the belt body, and the multiple first clamping parts are arranged on the conveying face of the belt body at intervals; the clamping device comprises a mounting frame and second clamping parts, the multiple second clamping parts are arranged on the mounting frame at intervals, the mounting frame is arranged between a first position and a second position in a reciprocating motion mode, in the first position, the multiple second clamping parts avoid the conveying space needed for conveying the carton, and in the second position, the multiple second clamping parts are arranged on the mounting frame in a reciprocating motion mode. The multiple second clamping parts and the multiple first clamping parts correspondingly form clamping intervals needed for clamping the strip boxes in the conveying direction of the conveying belt, and the size of the clamping intervals can be adjusted. The carton packaging machine comprises the conveying equipment. The carton packaging machine and the conveying equipment thereof can meet the fixing requirements of special-shaped cartons of different specifications on a packaging station.

Description

Technical Field

[0001] The present disclosure relates to the field of cigarette packaging equipment, and in particular to a cigarette box packaging machine and a conveying device thereof. Background Art

[0002] Traditional box packaging machines usually use unfolded flat materials for packaging and forming, and the transmission method of multiple gear sets enables the machine to work at a high speed. However, for special-shaped boxes of various specifications, the traditional box packaging machine has a compact mechanical structure, cannot pre-set pre-folded boxes, cannot quickly change molds, and is difficult to meet the fixed requirements of special-shaped boxes of different specifications at the packaging station. Utility Model Content

[0003] The purpose of the present disclosure is to provide a strip box packaging machine and a conveying device thereof, so as to meet the fixing requirements of special-shaped strip boxes of different specifications at a packaging station.

[0004] A first aspect of the present disclosure provides a conveying device of a strip box packaging machine, which is used to convey strip boxes to different packaging stations, comprising:

[0005] A conveyor belt, comprising a belt body and a first clamping portion arranged on the belt body, wherein a plurality of the first clamping portions are arranged on a conveying surface of the belt body at intervals along a conveying direction of the conveyor belt; and

[0006] The clamping device includes a mounting frame and a second clamping portion, a plurality of the second clamping portions are arranged on the mounting frame at intervals, and the mounting frame can be reciprocated between a first position and a second position. In the first position, the plurality of second clamping portions avoid the conveying space required for conveying the strip box. In the second position, the plurality of second clamping portions correspond one-to-one with the plurality of first clamping portions to form a clamping interval required for clamping the strip box along the conveying direction, wherein the size of the clamping interval is adjustable.

[0007] According to some embodiments of the present disclosure, the further comprising:

[0008] A first motor is drivingly connected to the belt body and configured to drive the belt body and the first clamping portion to move along the conveying direction;

[0009] A second motor, drivingly connected to the mounting frame, configured to drive the mounting frame to reciprocate between the first position and the second position; and

[0010] The control device is communicatively connected to the first motor and the second motor, and is configured to periodically start and stop the first motor and the second motor, and to adjust the position of the first clamping portion along the conveying direction when the first motor stops, so as to adjust the size of the clamping interval.

[0011] According to some embodiments of the present disclosure, the first motor is a servo motor, and / or the second motor is a servo motor.

[0012] According to some embodiments of the present disclosure,

[0013] The conveying device further comprises a clamping portion detection device, which is disposed on a conveying path of the conveyor belt and is configured to detect whether the first clamping portion exists at the location;

[0014] The first motor is a servo motor, and the control device is communicatively connected to the clamping part detection device, and is configured to determine whether to adjust the zero position of the encoder of the first motor based on the time interval detected by the clamping part detection device for the first clamping part and the first motor to switch from a start state to a stop state.

[0015] According to some embodiments of the present disclosure, the mounting bracket is swingably disposed between the first position and the second position.

[0016] According to some embodiments of the present disclosure, the conveying equipment also includes a second motor and a screw pair, the second motor is drivingly connected to the screw part of the screw pair and is configured to drive the screw part to rotate, the clamping device also includes a connecting rod and at least two cranks, the connecting rod is connected to the nut part of the screw pair, the mounting frame, the connecting rod and at least two cranks form a parallelogram mechanism, so that the mounting frame swings with the rotation of the second motor.

[0017] According to some embodiments of the present disclosure, the mounting position of the second clamping portion on the mounting frame is adjustable to adjust the size of the clamping interval.

[0018] According to some embodiments of the present disclosure, the second clamping portion is provided with a connecting hole, and the clamping device includes a threaded connector, which passes through the connecting hole and cooperates with the mounting frame to fasten the second clamping portion to the mounting frame, and the connecting hole is a long hole.

[0019] According to some embodiments of the present disclosure, two synchronously movable conveyor belts are included, and the two conveyor belts are arranged side by side and spaced apart perpendicular to the conveying direction. In the second position, the mounting frame is located between the two conveyor belts and forms the clamping gap together with the first clamping parts of the two conveyor belts.

[0020] A second aspect of the present disclosure provides a strip box packaging machine, comprising the conveying device described in the first aspect of the present disclosure.

[0021] In the conveying device of the strip box packaging machine disclosed in the present invention, since the size of the clamping interval formed by the first clamping part and the second clamping part is adjustable, it can be used to clamp special-shaped strip boxes of different specifications, thereby meeting the fixing requirements of special-shaped strip boxes of different specifications on the packaging station.

[0022] The carton packaging machine disclosed herein has the advantages possessed by the conveying device disclosed herein.

[0023] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0025] Figure 1 It is a schematic diagram of the structure of the conveying equipment of some embodiments of the present disclosure.

[0026] Figure 2 for Figure 1 A side structural schematic diagram of the conveying equipment is shown.

[0027] Figure 3 This is a schematic diagram of the control principle of eliminating the accumulated error of the encoder of the first motor by the conveying device through the clamping part detection device in some embodiments of the present disclosure.

[0028] Figure 4 It is a schematic structural diagram of the second clamping portion of the conveying device of some embodiments of the present disclosure.

[0029] In the accompanying drawings, each reference numeral represents:

[0030] 11. belt body; 12. first clamping part; 21. mounting frame; 22. second clamping part; 220. connecting hole; 23. connecting rod; 24. crank; 25. threaded connector; 3. first motor; 4. second motor; 5. lead screw pair. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, these technologies, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0034] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0035] refer to Figures 1 to 4 Some embodiments of the present disclosure provide a conveying device of a strip box packaging machine, which is used to convey strip boxes to different packaging stations, including a conveyor belt and a clamping device.

[0036] The conveyor belt comprises a belt body 11 and a first clamping portion 12 arranged on the belt body 11, and a plurality of first clamping portions 12 are arranged at intervals on the conveying surface of the belt body 11 along the conveying direction of the conveyor belt. The clamping device comprises a mounting frame 21 and a second clamping portion 22, and a plurality of second clamping portions 22 are arranged at intervals on the mounting frame 21, and the mounting frame 21 is arranged to be reciprocatingly movable between a first position and a second position. In the first position, the plurality of second clamping portions 22 avoid the conveying space required for conveying the strip box, and in the second position, the plurality of second clamping portions 22 correspond to the plurality of first clamping portions 12 one by one along the conveying direction to form a clamping interval required for clamping the strip box, wherein the size of the clamping interval is adjustable.

[0037] Optionally, the conveyor belt is a synchronous belt. Optionally, in order to facilitate the rapid replacement of the belt material, the first and tail ends of the belt body 11 of the conveyor belt can be arranged to overlap each other. Optionally, the first clamping portion 12 is convexly arranged on the conveying surface, and the second clamping portion 22 is convexly arranged on the mounting frame 21, wherein in the second position, the convex direction of the second clamping portion 22 is perpendicular to the conveying surface. Optionally, the first clamping portion 12 and the second clamping portion 22 are plate-shaped, and the second clamping portion 22 is made of metal material.

[0038] refer to Figure 1 and Figure 2 The working principle of the conveying device of the strip box packaging machine according to the embodiment of the present disclosure is as follows.

[0039] During the packing process of the strip box, the strip box is placed in the interval between two adjacent first clamping parts 12, and the strip box can be moved along the conveying direction between different packing stations on the conveyor belt. Different packing stations are provided with different packing mechanisms to perform different packing processes.

[0040] When the strip box is conveyed to a position corresponding to the packaging mechanism of a certain packaging station, the conveyor belt stops at this position, and the mounting frame 21 moves from the first position to the second position. The second clamping portion 22 moves with the mounting frame 21 to the top of the conveying surface, and gradually approaches the corresponding first clamping portion 12, so as to apply a clamping force to the strip box together with the corresponding first clamping portion 12, so that the strip box remains fixed relative to the packaging mechanism of the packaging station. At the second position, the distance between the first clamping portion 12 and the second clamping portion 22 along the conveying direction reaches the clamping interval, the strip box is clamped, and the strip box remains fixed relative to the packaging station.

[0041] Then, the packaging mechanism performs the corresponding packaging process.

[0042] When the packaging process is completed, the conveyor belt starts to continue to move the strip box to the next station along the conveying direction, and the mounting frame 21 moves from the second position to the first position to avoid the strip box from the upstream of the conveying direction, so that the upstream strip box can move forward smoothly.

[0043] When the strip box and the first clamping part 12 move to the next packaging station along the conveying direction, the conveyor belt stops again, and the first clamping part 12 and the second clamping part 22 clamp the strip box again to perform the next packaging process. And so on, until all packaging processes are completed.

[0044] The distance between two adjacent first clamping parts 12 and the distance between two adjacent second clamping parts 22 can be determined according to the distance between two adjacent packaging stations.

[0045] For two adjacent first clamping parts 12, it is sufficient to make the positional relationship between the upstream first clamping part 12 and the upstream packaging station and the positional relationship between the downstream first clamping part 12 and the downstream packaging station consistent along the conveying direction. The same is true for two adjacent second clamping parts 22. When the conveyor belt stops, the two adjacent strip boxes located upstream and downstream can perform two adjacent packaging processes simultaneously.

[0046] Optionally, the number of the second clamping parts 22 is the same as the number of the packaging stations. When the mounting frame 21 moves to the second position, the multiple second clamping parts 22 correspond to the positions of the multiple packaging stations, and the positional relationship between the multiple second clamping parts 22 and the corresponding packaging stations along the conveying direction is consistent.

[0047] The size of the clamping interval can be determined according to the size of the special-shaped strip box to be clamped.

[0048] In the conveying device of the strip box packaging machine of the embodiment of the present disclosure, since the size of the clamping interval formed by the first clamping part 12 and the second clamping part 22 is adjustable, it can be used to clamp special-shaped strip boxes of different specifications to meet the fixing requirements of special-shaped strip boxes of different specifications on the packaging station.

[0049] For the conveying device of the strip box packaging machine of the embodiment of the present disclosure, the size of the clamping interval can be adjusted by adjusting the driving mode of the conveying belt and the clamping device, or by a mechanical structure, which is further described in detail below.

[0050] In some embodiments, the conveying device further includes a first motor 3, a second motor 4, and a control device. The first motor 3 is connected to the belt body 11 and is configured to drive the belt body 11 and the first clamping portion 12 to move along the conveying direction. The second motor 4 is connected to the mounting frame 21 and is configured to drive the mounting frame 21 to reciprocate between the first position and the second position. The control device is connected to the first motor 3 and the second motor 4 in communication, and is configured to start and stop the first motor 3 and the second motor 4 periodically, and adjust the position of the first clamping portion 12 along the conveying direction when the first motor 3 stops, so as to adjust the size of the clamping interval.

[0051] Optionally, refer to Figure 1 and Figure 2 The output shaft of the first motor 3 is connected to the driving wheel of the conveyor belt through another synchronous belt transmission mechanism as a speed change mechanism. By adjusting the reduction ratio of the speed change mechanism and configuring a corresponding control program in the control device, the distance moved by the belt body 11 along the conveying direction can be equal to the distance between two adjacent packaging stations for each rotation of the first motor 3.

[0052] Optionally, the control device is configured to start and stop the first motor 3 and the second motor 4 simultaneously.

[0053] In the above embodiment, the control device can start and stop the first motor 3 and the second motor 4 periodically. In each cycle, the displacement time relationship of the first motor 3 and the second motor 4 can be determined by the control command issued by the control device, and the first motor 3 and the second motor 4 can drive the belt body 11 and the mounting frame 21 to move in a corresponding motion trajectory, so that the first clamping part 12 and the second clamping part 22 can cooperate with each other. In addition, by changing the direction of the first motor 3 and the second motor 4, the conveyor belt and the clamping device can also be reversed.

[0054] One of the first motor 3 and the second motor 4 can be regarded as the main axis of the electronic cam, and the other can be regarded as the slave axis of the electronic cam. By drawing different electronic cam curves, the control device can change the displacement time relationship between the first motor 3 and the second motor 4, thereby changing the position of the first clamping part 12 along the conveying direction when the first motor 3 stops. When the mounting bracket 21 moves to the second position, since the position of the first clamping part 12 along the conveying direction changes when the first motor 3 stops, the positional relationship between the first clamping part 12 and the second clamping part 22 along the conveying direction also changes, so that the first clamping part 12 and the second clamping part 22 have different clamping intervals.

[0055] In the above embodiment, the conveying device adopts an electronic cam driving mode, and can adapt to the packaging process of special-shaped strip boxes of different specifications based on different electronic cam curves. Since fewer mechanical transmission structures are adopted, the conveying device of the above embodiment not only occupies less space, which can save the internal space of the strip box packaging machine, but also can reduce vibration and friction, and reduce the noise generated during operation.

[0056] In some embodiments, the first motor 3 is a servo motor, and / or the second motor 4 is a servo motor.

[0057] Optionally, both the first motor 3 and the second motor 4 are servo motors. In the above embodiment, by using the servo motor as the driving device of the belt body 11 and the mounting frame 21, the movement of the belt body 11 and the mounting frame 21 can be accurately controlled, not only a higher speed can be achieved, but also multi-stage speed change can be achieved, which is conducive to meeting the requirements of different production vehicle speeds.

[0058] In some embodiments, the conveying device further comprises a clamping portion detection device, which is disposed on the conveying path of the conveyor belt and is configured to detect whether there is a first clamping portion 12 at the location. The first motor 3 is a servo motor, and the control device is communicatively connected with the clamping portion detection device and is configured to determine whether to adjust the zero position of the encoder of the first motor 3 according to the time interval between the clamping portion detection device detecting the first clamping portion 12 and the first motor 3 switching from the start state to the stop state.

[0059] Optionally, the clamping portion detection device is a photoelectric detector. Optionally, the clamping portion detection device is arranged on the side of the conveyor belt.

[0060] The conveying device in the above embodiment can eliminate the accumulated error of the encoder according to the detection signal of the clamping part detection device, and the principle is as follows.

[0061] refer to Figure 3 , when a first clamping part 12 moves to the position of the clamping part detection device along the conveying direction, the first clamping part 12 triggers the clamping part detection device, the clamping part detection device detects the existence of the first clamping part 12 and generates a signal change, and the clamping part detection device sends a switch quantity to the control device. Under the ideal state that the encoder of the first motor 3 does not produce errors, the time interval between the moment when the clamping part detection device is triggered, that is, the moment when the rising edge of the switch quantity is located and the moment when the first clamping part 12 switches to the stop state with the belt body 11 should be a fixed value. For example, if the position of the clamping part detection device coincides with the stop position of the first clamping part 12 in each operating cycle along the conveying direction, after the first motor 3 runs for one cycle, the clamping part detection device is triggered by the first clamping part 12, and the first clamping part 12 switches to the stop state with the belt body 11, that is, the above time interval is 0.

[0062] If the deviation between the actual time interval and the fixed value does not exceed the allowable range, it indicates that the cumulative error of the encoder of the first motor 3 does not exceed the allowable range. If the deviation between the actual time interval and the fixed value exceeds the allowable range, it indicates that the cumulative error of the encoder of the first motor 3 also exceeds the allowable range, and the zero position of the encoder needs to be adjusted. The control device can send a control instruction to the encoder to re-acquire the zero position, and use the encoder value corresponding to the moment when the clamping part detection device is triggered as the zero position of the encoder, thereby eliminating the cumulative error of the encoder of the first motor 3.

[0063] In some embodiments, the mounting bracket 21 is swingably disposed between a first position and a second position.

[0064] In some embodiments, reference Figure 1 and Figure 2 The conveying equipment also includes a second motor 4 and a screw pair 5. The second motor 4 is drivingly connected to the screw part of the screw pair 5 and is configured to drive the screw part to rotate. The clamping device also includes a connecting rod 23 and at least two cranks 24. The connecting rod 23 is installed on the nut part of the screw pair 5. The mounting frame 21, the connecting rod 23 and the at least two cranks 24 form a parallelogram mechanism so that the mounting frame 21 swings with the rotation of the second motor 4.

[0065] In the above embodiment, the two ends of each crank 24 are hinged to the mounting frame 21 and the connecting rod 23 respectively, the second motor 4 can drive the screw part of the screw pair 5 to rotate, and the connecting rod 23 moves linearly with the nut part of the screw pair 5. The connecting rod 23 drives the two cranks 24 to swing, and then drives the mounting frame 21 to swing between the first position and the second position.

[0066] Optionally, the nut portion of the screw pair 5 is reciprocatably arranged along the conveying direction, so that the connecting rod 23 can reciprocate along the conveying direction, thereby enabling the mounting frame 21 and the second clamping portion 22 to swing up and down relative to the conveying surface of the conveyor belt.

[0067] In some embodiments, the installation position of the second clamping portion 22 on the mounting frame 21 is adjustable to adjust the size of the clamping interval.

[0068] The conveying device of the above embodiment can adjust the size of the clamping interval by adjusting the position of the second clamping portion 22 relative to the mounting frame 21, that is, the size of the clamping interval is adjusted by the mechanical structure of the second clamping portion 22 itself.

[0069] In some embodiments, reference Figure 4 The second clamping portion 22 is provided with a connecting hole 220, and the clamping device includes a threaded connector 25, which passes through the connecting hole 220 and is matched with the mounting frame 21 to fasten the second clamping portion 22 to the mounting frame 21, and the connecting hole 220 is a long hole.

[0070] Optionally, the length direction of the connecting hole 220 is perpendicular to the clamping surface of the second clamping portion 22 .

[0071] In the above embodiment, the second clamping portion 22 is detachably connected to the mounting frame 21 via a threaded connection 25. By setting the connecting hole 220 as a long hole, the fastening position of the second clamping portion 22 relative to the mounting frame 21 can be adjusted along the length direction of the connecting hole 220, thereby playing a role in adjusting the size of the clamping interval.

[0072] In some embodiments, reference Figure 1 The conveying device includes two conveyor belts that can move synchronously. The two conveyor belts are arranged side by side and spaced perpendicular to the conveying direction. In the second position, the mounting frame 21 is located between the two conveyor belts and forms a clamping interval together with the first clamping portions 12 of the two conveyor belts.

[0073] In the above embodiment, when the strip box is conveyed to a position corresponding to the packaging mechanism of a certain packaging station, the two first clamping portions 12 of the two conveyor belts can work together with the second clamping portions 22 on the strip box, so as to clamp the strip box more stably.

[0074] Some embodiments of the present disclosure further provide a strip box packaging machine, comprising the aforementioned conveying device.

[0075] The strip box packaging machine provided by the embodiments of the present disclosure has the advantages of the aforementioned conveying equipment.

[0076] In some embodiments, the control device described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof for performing the functions described in the present disclosure.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution for protection requested by the present disclosure.

Claims

1. A conveying device for a strip box packaging machine, used for conveying strip boxes to different packaging stations, characterized in that: include: A conveyor belt comprises a belt body (11) and a first clamping portion (12) arranged on the belt body (11), wherein a plurality of the first clamping portions (12) are arranged at intervals on the conveying surface of the belt body (11) along the conveying direction of the conveyor belt; and The clamping device comprises a mounting frame (21) and a second clamping portion (22), wherein a plurality of the second clamping portions (22) are arranged at intervals on the mounting frame (21), and the mounting frame (21) is reciprocatably arranged between a first position and a second position. In the first position, the plurality of the second clamping portions (22) avoid the conveying space required for conveying the strip box, and in the second position, the plurality of the second clamping portions (22) correspond one-to-one with the plurality of the first clamping portions (12) along the conveying direction to form a clamping interval required for clamping the strip box, wherein the size of the clamping interval is adjustable.

2. The conveying device according to claim 1, characterized in that: Also includes: A first motor (3) is drivingly connected to the belt body (11) and is configured to drive the belt body (11) and the first clamping portion (12) to move along the conveying direction; a second motor (4) drivingly connected to the mounting frame (21) and configured to drive the mounting frame (21) to reciprocate between the first position and the second position; and A control device is communicatively connected to the first motor (3) and the second motor (4), and is configured to periodically start and stop the first motor (3) and the second motor (4), and to adjust the position of the first clamping portion (12) along the conveying direction when the first motor (3) stops, so as to adjust the size of the clamping interval.

3. The conveying device according to claim 2, characterized in that: The first motor (3) is a servo motor, and / or the second motor (4) is a servo motor.

4. The conveying device according to claim 2, characterized in that: The conveying device further comprises a clamping portion detection device, which is arranged on the conveying path of the conveyor belt and is configured to detect whether the first clamping portion (12) exists at the position; The first motor (3) is a servo motor, and the control device is communicatively connected to the clamping portion detection device and is configured to determine whether to adjust the zero position of the encoder of the first motor (3) based on the time interval detected by the clamping portion detection device when the first clamping portion (12) and the first motor (3) switch from a start state to a stop state.

5. The conveying device according to claim 1, characterized in that: The mounting frame (21) is swingably arranged between the first position and the second position.

6. The conveying device according to claim 5, characterized in that: The conveying device also includes a second motor (4) and a screw pair (5), wherein the second motor (4) is drivingly connected to the screw part of the screw pair (5) and is configured to drive the screw part to rotate, and the clamping device also includes a connecting rod (23) and at least two cranks (24), wherein the connecting rod (23) is connected to the nut part of the screw pair (5), and the mounting frame (21), the connecting rod (23) and the at least two cranks (24) form a parallelogram mechanism so that the mounting frame (21) swings with the rotation of the second motor (4).

7. The conveying device according to any one of claims 1 to 6, characterized in that: The installation position of the second clamping portion (22) on the mounting frame (21) is adjustable to adjust the size of the clamping interval.

8. The conveying device according to claim 7, characterized in that The second clamping portion (22) is provided with a connecting hole (220), and the clamping device comprises a threaded connector (25). The threaded connector (25) passes through the connecting hole (220) and is matched and connected with the mounting frame (21) to fasten the second clamping portion (22) to the mounting frame (21), and the connecting hole (220) is a long hole.

9. The conveying device according to any one of claims 1 to 6, characterized in that: It comprises two synchronously movable conveyor belts, the two conveyor belts being arranged side by side and spaced apart perpendicular to the conveying direction, and in the second position, the mounting frame (21) is located between the two conveyor belts and forms the clamping interval together with the first clamping parts (12) of the two conveyor belts.

10. A strip box packaging machine, characterized in that: Comprising a conveying device according to any one of claims 1 to 9.

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