Automatic splicing device for inner frame paper

Abstract

The utility model belongs to the technical field of cigarette production, and discloses an automatic splicing device for inner frame paper. The device comprises a synchronous and same-speed driving mechanism, a cutting switching mechanism and an adhesive tape bonding mechanism, the synchronous and same-speed driving mechanism is used for enabling new inner frame paper and old inner frame paper to do equal-frequency and constant-speed intermittent linear motion, and the cutting switching mechanism is used for cutting off the old inner frame paper during pause time to form a splicing end and enabling the new inner frame paper to abut against the splicing end. And the adhesive tape bonding mechanism is used for bonding an adhesive tape at the abutting part of the new inner frame paper and the old inner frame paper during the pause time. By means of the automatic splicing device for the inner frame paper, the new inner frame paper and the old inner frame paper are intermittently conveyed at equal frequency and equal speed, cutting and splicing are conducted within the pause time of conveying of the inner frame paper, automatic splicing without speed reduction, halt, overlapping and gaps in the inner frame paper roll conversion process is achieved, the halt frequency can be reduced, and the production efficiency is improved. The workload of operators is greatly reduced, the consumption of raw materials and auxiliary materials is reduced, and the operation efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette production, in particular to an automatic splicing device for inner frame paper. Background Art

[0002] As the main model in the production and manufacturing field of current cigarette enterprises, the YB45 packaging machine has a maximum production speed of 400 packs per minute (the shortest pause time for intermittent movement is 0.10 s). With its excellent equipment operation efficiency and stable product quality, it has won wide recognition and application in the industry. This model fully considers the dual requirements of production efficiency and product quality in design, and realizes an efficient and stable cigarette packaging process by optimizing the mechanical structure and control system. However, in the actual production process, the YB45 packaging machine also exposes some areas that need improvement, especially in the replacement link of packaging materials.

[0003] Due to the special supply method of intermittent movement and transportation of the inner frame paper, currently, in the YB45 packaging machine, the splicing device of the inner frame paper adopts a manual operation method. This means that every time the material is replaced, the operator must stop the machine for manual splicing. Not only is the operation process relatively complex and cumbersome, but it also takes a long time. More seriously, the shutdown caused by material replacement will further affect the normal operation of other equipment in the unit, thus reducing the efficiency of the entire production line. Such frequent shutdowns and restarts not only increase the equipment maintenance cost, but also may lead to waste of raw and auxiliary materials, increasing the production cost of the enterprise.

[0004] Based on the above, there is an urgent need for an automatic splicing device for inner frame paper to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an automatic splicing device for inner frame paper, which can reduce the number of shutdowns, reduce the workload of operators, and improve the equipment operation efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An automatic splicing device for inner frame paper, used for an intermittent working packaging machine, includes:

[0008] A synchronous and same-speed driving mechanism, which is used to synchronously transport the old inner frame paper and the new inner frame paper, and makes the new inner frame paper and the old inner frame paper perform intermittent linear motion with equal frequency and equal speed;

[0009] A cutting and conversion mechanism, which is used to cut off the old inner frame paper to form a splicing end during the pause time, and is used to abut the front end of the new inner frame paper against the splicing end;

[0010] The tape bonding mechanism is used to apply tape at the abutting position between the new inner frame paper and the old inner frame paper during the pause time to bond and fix the new inner frame paper and the old inner frame paper.

[0011] Preferably, the synchronous and same-speed driving mechanism includes a first conveying component, a second conveying component, and a synchronous transmission component. The first conveying component is used to convey one of the old inner frame paper and the new inner frame paper, and the second conveying component is used to convey the other of the old inner frame paper and the new inner frame paper. The synchronous transmission component is drivingly connected between the first conveying component and the second conveying component to enable the old inner frame paper and the new inner frame paper to perform synchronous, equal-frequency, and equal-speed intermittent linear motion.

[0012] Preferably, the synchronous and same-speed driving mechanism is drivingly connected to the intermittent working packaging machine to directly drive at least one of the first conveying component and the second conveying component.

[0013] Preferably, the cutting and converting mechanism includes a cutter assembly. The cutter assembly includes a rotary cutter and a cutter shaft. A first channel and a second channel are formed between the rotary cutter and the cutter shaft. The first channel and the second channel are arranged in a V shape and their outlets are connected. The old inner frame paper can pass through the cutter assembly along one of the first channel and the second channel, and the new inner frame paper can pass through the cutter assembly along the other of the first channel and the second channel.

[0014] The rotary cutter has an upper cutting edge and a lower cutting edge. The upper cutting edge can rotate around the axis of the rotary cutter to close and open the inlet of the first channel, and the lower cutting edge can rotate around the axis of the rotary cutter to close and open the inlet of the second channel. The upper cutting edge and the lower cutting edge are used to correspondingly cut the old inner frame paper located at the inlet of the first channel or the inlet of the second channel when closed.

[0015] Preferably, the first conveying component includes a first guide bar, and a negative pressure can be formed inside the first guide bar. The negative pressure is used to limit and adsorb and fix the new inner frame paper; and / or,

[0016] The second conveying component includes a second guide bar, and a negative pressure can be formed inside the second guide bar. The negative pressure is used to limit and adsorb and fix the new inner frame paper.

[0017] Preferably, the cutting and converting mechanism further includes an indentation cutting roller group. The old inner frame paper and the new inner frame paper pass through the cutter assembly and the indentation cutting roller group in sequence. The indentation cutting roller group is used to form creases on the old inner frame paper and the new inner frame paper.

[0018] Preferably, the tape bonding mechanism includes a guide roller set, a bonding cylinder, a tape suction block, and a third guide bar. The third guide bar is defined to form a bonding channel. The guide roller set is disposed at the inlet of the bonding channel and is used to guide the old inner frame paper and the new inner frame paper into the bonding channel.

[0019] The bonding cylinder is used to drive the tape suction block to move. The tape suction block can penetrate into the bonding channel and bond the tape to the abutting portion of the old inner frame paper and the new inner frame paper.

[0020] Preferably, the guide roller set, the bonding cylinder, and the tape suction block are located between the cutter assembly and the indentation cutting roller set. The bonding channel is formed with an indentation opening. The indentation cutting roller set can pass through the indentation opening and abut against the old inner frame paper and the new inner frame paper.

[0021] Preferably, the inner frame paper automatic splicing device further includes a detection roller for detecting the remaining amount of the old inner frame paper, and the detection roller can send a signal to the synchronous and constant-speed driving mechanism to cause the new inner frame paper to start an equal-frequency and equal-speed intermittent linear motion.

[0022] Preferably, the guide roller set, the indentation cutting roller set, and the synchronous transmission assembly are in transmission connection.

[0023] The beneficial effect of the inner frame paper automatic splicing device of the present utility model is that through the above-mentioned inner frame paper automatic splicing device, the new inner frame paper and the old inner frame paper are intermittently conveyed at equal frequency and equal speed, and cutting and splicing are performed during the pause time of the inner frame paper conveying, realizing the automatic splicing of the inner frame paper roll conversion process without deceleration, without stopping, without overlap, and without gap, which can reduce the number of stops, greatly reduce the workload of operators, reduce the consumption of raw and auxiliary materials, and improve the operation efficiency of the equipment. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the inner frame paper automatic splicing device provided by the present utility model;

[0025] Figure 2 is a schematic structural diagram of the cutting conversion mechanism and the tape bonding mechanism in the present utility model;

[0026] Figure 3 is a schematic structural diagram of the cutter assembly in the present utility model;

[0027] Figure 4 is along Figure 3 the internal structural diagram of the cutter assembly along A-A in

[0028] Figure 5It is a schematic diagram of the driving connection among the first main conveying roller, the second main conveying roller, and the indentation cutting main roller through gears.

[0029] In the figure:

[0030] 100, new inner frame paper; 200, old inner frame paper; 2001, splicing end;

[0031] 11, the first tensioning roller group; 12, the first conveying roller group; 121, the first main conveying roller; 122, the first driven conveying roller; 13, the first guide bar; 14, the detection roller;

[0032] 21, the second tensioning roller group; 22, the second conveying roller group; 221, the second main conveying roller; 222, the second driven conveying roller; 23, the second guide bar;

[0033] 31, the press roller swing rod; 32, the press roller swing rod cylinder; 33, the first gear; 34, the second gear; 35, the indentation driving gear; 36, the transmission gear;

[0034] 4, the cutter assembly; 41, the rotary cutter; 411, the upper cutting edge; 412, the lower cutting edge; 42, the cutter shaft; 421, the first channel; 422, the second channel; 423, the anvil; 4231, the cutting edge; 43, the rotary cutter cylinder; 44, the pin shaft;

[0035] 51, the guiding roller group; 511, the guiding main roller; 512, the guiding driven roller; 52, the third guide bar; 53, the bonding cylinder; 54, the tape suction block; 55, the indentation cutting roller group; 551, the indentation cutting main roller; 552, the indentation cutting driven roller; 56, the paper feeding roller group. Detailed implementation manners

[0036] The following further details the present utility model in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] The following is based on the attached Figure 1 To Attachment Figure 5 The utility model introduces an automatic splicing device for inner frame paper.

[0041] Specifically, the inner frame paper automatic splicing device is mainly suitable for intermittent working packaging machines, such as YB45 packaging machines, etc. In the intermittent working packaging machine, the power of the inner frame paper conveying and cutting is introduced by the gear shaft of the main transmission, and the intermittent motion of the inner frame paper conveying is realized by a series of shafts and gears, and the outer groove wheel (Malta wheel mechanism) of the six grooves is moved by a single pin to realize the intermittent motion of the inner frame paper conveying, and the distance of each single inner frame paper moving forward is paused once to realize the final convex-concave cutting of the inner frame paper. The cutting of the inner frame paper is completed by the reciprocating concave cutter during the pause time of the intermittent motion, along the vertical direction of the inner frame paper conveying and the fixed convex cutter extruding and cutting. That is to say, the inner frame paper can be divided into the alternating motion time and the pause time during the motion process, and the motion time is moved, and then the pause time is transferred to the motion time. Optionally, in the present embodiment, the motion time is not less than 0.05s, and the pause time is not less than 0.10s.

[0042] In this embodiment, if Figure 1As shown in the figure, the automatic splicing device for inner frame paper mainly includes a synchronous and constant-speed driving mechanism, a cutting and conversion mechanism, and a tape bonding mechanism. Among them, the synchronous and constant-speed driving mechanism is used to convey the old inner frame paper 200 (referring to a roll of inner frame paper that is about to be used up) and the new inner frame paper 100 (referring to a roll of inner frame paper that is about to be used), and makes the new inner frame paper 100 and the old inner frame paper 200 perform intermittent linear motion at the same frequency and speed, that is, having the same pause time and the same movement time, and the new inner frame paper 100 and the old inner frame paper 200 have the same moving speed during the movement time.

[0043] During the pause time, the cutting and conversion mechanism can cut the old inner frame paper 200, form a splicing end 2001 on the old inner frame paper 200, and cooperate with the characteristics of the intermittent linear motion of the new inner frame paper 100 and the old inner frame paper 200, so that the front end of the new inner frame paper 100 can abut against the splicing end 2001 of the old inner frame paper 200 without overlap and without gap. The tape bonding mechanism can then adhere a tape at the abutting position of the new inner frame paper 100 and the old inner frame paper 200 to bond and fix the new inner frame paper 100 and the old inner frame paper 200.

[0044] Through the above automatic splicing device for inner frame paper, the new inner frame paper 100 and the old inner frame paper 200 are intermittently conveyed at the same frequency and speed, and cutting and splicing are performed during the pause time of the inner frame paper conveying, realizing non-deceleration, non-stop, non-overlap, and seamless automatic splicing during the conversion process of the inner frame paper roll, which can reduce the number of stops, greatly reduce the workload of operators, reduce the consumption of raw and auxiliary materials, and improve the operating efficiency of the equipment.

[0045] As Figure 1 shown, in this embodiment, the synchronous and constant-speed driving mechanism includes a first conveying component, a second conveying component, and a synchronous transmission component. This synchronous and constant-speed driving mechanism can convey the old inner frame paper 200 and the new inner frame paper 100 along Figure 1 the direction from left to right in the figure to supply inner frame paper to the intermittent working packaging machine.

[0046] Specifically, the first conveying component includes a first inner frame paper mounting shaft, a first tensioning roller set 11, a first conveying roller set 12, and a first guide bar 13. Among them, the inner frame paper is wound around the first inner frame paper mounting shaft and can rotate around the first inner frame paper mounting shaft. The first tensioning roller set 11 is used to tension the inner frame paper to prevent the inner frame paper from wrinkling. A first limiting channel is formed in the first guide bar 13, which can limit the posture of the inner frame paper, and the inner frame paper can enter the cutting and conversion mechanism after passing through the first limiting channel.

[0047] The first conveying roller group 12 includes a first conveying main roller 121 and a first conveying slave roller 122. The distance between the first conveying main roller 121 and the first conveying slave roller 122 is adjustable, and the inner frame paper can be clamped at the first limit channel. When clamped, the distance can be reduced to make the inner frame paper pressed between the first conveying main roller 121 and the first conveying slave roller 122, thereby realizing the conveying of the inner frame paper. In addition, the distance can also be increased to separate the inner frame paper from the first conveying main roller 121 or the first conveying slave roller 122, so that the inner frame paper stops moving.

[0048] Similar to the first conveying assembly, the second conveying assembly includes a second inner frame paper installation shaft, a second tensioning roller group 21, a second conveying roller group 22, and a second guide bar 23, and has similar functions. Among them, the second inner frame paper installation shaft is used to roll the inner frame paper so that the inner frame paper can rotate around the second inner frame paper installation shaft. The second tensioning roller group 21 is used to tension the inner frame paper, and can also prevent wrinkles. The second guide bar 23 forms a second limiting channel, which can limit the posture of the inner frame paper, and the inner frame paper can enter the cutting conversion mechanism after passing through the second limiting channel. The second conveying roller group 22 is used to convey the inner frame paper and is arranged at the second limiting channel. The second conveying roller group 22 includes a second conveying main roller 221 and a second conveying slave roller 222, and the distance between the second conveying main roller 221 and the second conveying slave roller 222 is adjustable. This distance can be reduced to the point where the inner frame paper is pressed between the second conveying main roller 221 and the second conveying slave roller 222, thereby realizing the conveyance of the inner frame paper; and this distance can also be increased to the point where the inner frame paper is separated from the second conveying main roller 221 or the second conveying slave roller 222, thereby stopping the inner frame paper from moving.

[0049] Since the structures of the first conveying assembly and the second conveying assembly are similar, in this embodiment, the old inner frame paper 200 is conveyed by the first conveying assembly, and the new inner frame paper 100 is conveyed by the second conveying assembly. In some other embodiments, the old inner frame paper 200 can be conveyed by the second conveying assembly, and the new inner frame paper 100 can be conveyed by the first conveying assembly, so that automatic splicing can be completed, and the process of manually installing the new inner frame paper 100 is also convenient, avoiding the necessary process of installing the new inner frame paper 100 on the second conveying assembly.

[0050] The synchronous transmission assembly includes a roller swing rod 31 and a roller swing rod cylinder 32. The roller swing rod 31 is connected to the first conveying slave roller 122 and the second conveying slave roller 222, and can move under the drive of the roller swing rod cylinder 32, so as to synchronously adjust the distance between the first conveying slave roller 122 and the first conveying main roller 121, and the distance between the second conveying slave roller 222 and the second conveying main roller 221. The cutting conversion mechanism includes a cutter assembly 4, which includes a rotary cutter 41, a rotary cutter cylinder 43 and a cutter shaft 42. Figure 2 ,Figure 3 As shown, a first channel 421 and a second channel 422 are formed between the rotary cutter 41 and the cutter shaft 42. The first channel 421 and the second channel 422 are arranged in a V shape and the outlets of the two are connected. The old inner frame paper 200 can pass through the cutter assembly 4 along one of the first channel 421 and the second channel 422, and the new inner frame paper 100 can pass through the cutter assembly 4 along the other of the first channel 421 and the second channel 422. Exemplarily, in this embodiment, the first channel 421 and the second channel 422 are arranged in a V shape with an angle of 30°.

[0051] The rotary cutter 41 has an upper cutting edge 411 and a lower cutting edge 412, and is connected to the rotary cutter cylinder 43 through a pin shaft 44. Under the action of the rotary cutter cylinder 43, the upper cutting edge 411 can rotate around the axis of the rotary cutter 41 to close and open the inlet of the first channel 421, and the lower cutting edge 412 can rotate around the axis of the rotary cutter 41 to close and open the inlet of the second channel 422. A cutter anvil 423 is arranged on the cutter shaft 42, and the cutter anvil 423 is formed with cutting edges 4231 corresponding to the upper cutting edge 411 and the lower cutting edge 412 respectively. The upper cutting edge 411 and the lower cutting edge 412 can rotate and form a shear with the corresponding cutting edges 4231. The upper cutting edge 411 and the lower cutting edge 412 are used to cut the old inner frame paper 200 located at the inlet of the first channel 421 or the inlet of the second channel 422 when closed.

[0052] Taking the example that the first conveying assembly conveys the old inner frame paper 200 to the first channel 421 and the second conveying assembly conveys the new inner frame paper 100 to the second channel 422, referring to Figures 2 to 4 As shown, when the old inner frame paper 200 is about to be exhausted, within a pause time, by rotating the lower cutting edge 412, the lower cutting edge 412 closes the first channel 421, and when closed, the lower cutting edge 412 cooperates with the cutter anvil 423 on the cutter shaft 42 to cut the old inner frame paper 200 to form a splicing end 2001. Before this pause time, the front end of the new inner frame paper 100 is limited and fixed in the first guide bar 13, for example, by negative pressure adsorption or pressing and fixing, so that the new inner frame paper 100 has a sliding friction with the second conveying main roller 221 to prevent the new inner frame paper 100 from moving. And within this pause time, the fixation of the new inner frame paper 100 is stopped, for example, the negative pressure adsorption is stopped, so that there is a static friction between the second conveying main roller 221 and the new inner frame paper 100, so that the new inner frame paper 100 can move synchronously with the old inner frame paper 200 at the beginning of the next movement time. At the same time, the upper cutting edge 411 rotates to open the second channel 422, and the new inner frame paper 100 can penetrate into the cutter assembly 4 and abut against the old inner frame paper 200 at the connection of the first channel 421 and the second channel 422 without overlap and seam.

[0053] Continue to refer to Figure 1 、 Figure 2As shown, the adhesive tape bonding mechanism includes a guide roller group 51, an adhesive cylinder 53, an adhesive tape suction block 54 and a third guide bar 52. The guide roller group 51 and the third guide bar 52 jointly limit the conveying direction and position of the inner frame paper to form an adhesive channel, and the old inner frame paper 200 and the new inner frame paper 100 can pass through the adhesive channel with limited position. The guide roller group 51 is arranged at the entrance of the adhesive channel, and includes a guide main roller 511 and a guide slave roller 512. The guide main roller 511 is set to rotate unidirectionally in a counterclockwise direction, and the guide slave roller 512 is set to rotate unidirectionally in a clockwise direction, which can guide the old inner frame paper 200 and the new inner frame paper 100 into the adhesive channel. The bonding cylinder 53 is used to drive the tape suction block 54 to move. The tape suction block 54 can penetrate into the bonding channel and bond the tape to the abutment between the old inner frame paper 200 and the new inner frame paper 100, thereby achieving the splicing and fixation of the old inner frame paper 200 and the new inner frame paper 100.

[0054] Optionally, the cutting conversion mechanism also includes an indentation cutting roller group 55, which includes an indentation cutting main roller 551 and an indentation cutting slave roller 552. After the old inner frame paper 200 and the new inner frame paper 100 pass through the cutter assembly 4, they pass between the indentation cutting main roller 551 and the indentation cutting slave roller 552, thereby squeezing the old inner frame paper 200 and the new inner frame paper 100 to form a crease, and can drive the old inner frame paper 200 and the new inner frame paper 100 through the bonding channel. Specifically, the guide roller group 51, the cylinder and the tape suction block 54 are located between the cutter assembly 4 and the indentation cutting roller group 55 to prevent the old inner frame paper 200 and the new inner frame paper 100 from being separated when the crease is formed without being bonded and fixed. The bonding channel is formed with an indentation opening, and the indentation cutting roller group 55 can pass through the indentation opening and abut against the old inner frame paper 200 and the new inner frame paper 100, thereby forming a crease. Of course, in some embodiments, a paper feeding roller set 56 may also be provided behind the creasing and cutting roller set 55 to better achieve the effect of feeding the inner frame paper.

[0055] Preferably, in this embodiment, the first conveying main roller 121, the second conveying main roller 221, and the indentation cutting main roller 551 are all connected by a synchronous transmission assembly, and can drive the inner frame paper to move accordingly. Specifically, as shown in the figure, the first conveying main roller 121, the second conveying main roller 221, and the indentation cutting main roller 551 are respectively connected with the first gear 33, the second gear 34 and the indentation driving gear 35, and the synchronous transmission assembly also includes a plurality of transmission gears 36, and the first gear 33, the second gear 34 and the indentation driving gear 35 are connected by transmission gears 36. Preferably, the synchronous transmission assembly is connected by transmission with the power element of the packaging machine, so that the power of the packaging machine is used to make the first conveying main roller 121, the second conveying main roller 221, and the indentation cutting main roller 551 move, and it is easy to achieve the same frequency and speed with various processing actions on the inner frame paper in the packaging machine.

[0056] Optionally, in this embodiment, the inner box paper automatic splicing device further includes an electrical control system. Specifically, the electrical control system includes a detection roller 14, which is used to detect whether the inner box paper installed on the first inner box paper installation shaft and the second inner box paper installation shaft is about to run out. After detecting that it is about to run out, a signal will be sent to the control element (such as a PLC) of the electrical control system, thereby starting the automatic splicing program. In the automatic splicing program, the control element can control each of the above-mentioned cylinders, so as to realize the actions of the pressure roller swing rod cylinder 32, the rotary cutter cylinder 43, and the bonding cylinder 53 during the pause time. Optionally, in some embodiments, a shaft encoder can also be set in the paper feeding roller group 56 to confirm the pause time and the movement time, so as to facilitate accurate cutting and bonding actions during the pause time.

[0057] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Automatic splicing device for inner frame paper, used for intermittent working packaging machine, characterized in that: include: A synchronous and same-speed driving mechanism, the synchronous and same-speed driving mechanism is used to synchronously convey the old inner frame paper (200) and the new inner frame paper (100), and to make the new inner frame paper (100) and the old inner frame paper (200) perform intermittent linear motion at equal frequency and speed; A cutting conversion mechanism, the cutting conversion mechanism being used to cut off the old inner frame paper (200) during the pause time to form a splicing end (2001), and to bring the front end of the new inner frame paper (100) into contact with the splicing end (2001); The adhesive tape bonding mechanism is used to apply adhesive tape to the abutment between the new inner frame paper (100) and the old inner frame paper (200) during the pause time, so as to bond and fix the new inner frame paper (100) and the old inner frame paper (200).

2. The inner frame paper automatic splicing device according to claim 1 is characterized in that: The synchronous and same-speed driving mechanism comprises a first conveying assembly, a second conveying assembly and a synchronous transmission assembly, wherein the first conveying assembly is used to convey one of the old inner frame paper (200) and the new inner frame paper (100), and the second conveying assembly is used to convey the other of the old inner frame paper (200) and the new inner frame paper (100), and the synchronous transmission assembly is transmission-connected between the first conveying assembly and the second conveying assembly, so that the old inner frame paper (200) and the new inner frame paper (100) synchronously perform equal-frequency and equal-speed intermittent linear motion.

3. The inner frame paper automatic splicing device according to claim 2 is characterized in that: The synchronous and same-speed driving mechanism is transmission-connected to the intermittently operating packaging machine to directly drive at least one of the first conveying assembly and the second conveying assembly.

4. The automatic splicing device for inner frame paper according to claim 3 is characterized in that: The cutting conversion mechanism comprises a cutter assembly (4), the cutter assembly (4) comprising a rotating cutter (41) and a cutter shaft (42), a first channel (421) and a second channel (422) being formed between the rotating cutter (41) and the cutter shaft (42), the first channel (421) and the second channel (422) being arranged in a V shape and the outlets of the two being communicated, the old inner frame paper (200) can pass through the cutter assembly (4) along one of the first channel (421) and the second channel (422), and the new inner frame paper (100) can pass through the cutter assembly (4) along the other of the first channel (421) and the second channel (422), The rotary cutter (41) comprises an upper blade (411) and a lower blade (412); the upper blade (411) can rotate around the axis of the rotary cutter (41) to close and open the entrance of the first channel (421); the lower blade (412) can rotate around the axis of the rotary cutter (41) to close and open the entrance of the second channel (422); the upper blade (411) and the lower blade (412) are used to correspondingly cut off the old inner frame paper (200) located at the entrance of the first channel (421) or the entrance of the second channel (422) when closing.

5. The inner frame paper automatic splicing device according to claim 4, characterized in that: The first conveying assembly comprises a first guide bar (13), a negative pressure can be formed inside the first guide bar (13), and the negative pressure is used to limit, absorb and fix the new inner frame paper (100); and / or, The second conveying assembly comprises a second guide bar (23), and negative pressure can be formed inside the second guide bar (23), and the negative pressure is used to limit, absorb and fix the new inner frame paper (100).

6. The automatic splicing device for inner frame paper according to claim 5, characterized in that: The cutting conversion mechanism further comprises a creasing and cutting roller group (55), the old inner frame paper (200) and the new inner frame paper (100) pass through the cutter assembly (4) and the creasing and cutting roller group (55) in sequence, and the creasing and cutting roller group (55) is used to form folds on the old inner frame paper (200) and the new inner frame paper (100).

7. The automatic splicing device for inner frame paper according to claim 6, characterized in that: The adhesive tape bonding mechanism comprises a guide roller group (51), an adhesive cylinder (53), an adhesive tape suction block (54) and a third guide bar (52), wherein the third guide bar (52) defines a bonding channel, the guide roller group (51) is arranged at the entrance of the bonding channel, and the guide roller group (51) is used to guide the old inner frame paper (200) and the new inner frame paper (100) into the bonding channel. The bonding cylinder (53) is used to drive the adhesive tape suction block (54) to move, and the adhesive tape suction block (54) can penetrate into the bonding channel and bond the adhesive tape to the abutment point between the old inner frame paper (200) and the new inner frame paper (100).

8. The automatic splicing device for inner frame paper according to claim 7, characterized in that: The guide roller group (51), the bonding cylinder (53) and the tape suction block (54) are located between the cutter assembly (4) and the indentation cutting roller group (55); the bonding channel is formed with an indentation opening; the indentation cutting roller group (55) can pass through the indentation opening and abut against the old inner frame paper (200) and the new inner frame paper (100).

9. The automatic splicing device for inner frame paper according to claim 8, characterized in that: The inner frame paper automatic splicing device further comprises a detection roller (14), the detection roller (14) being used to detect the remaining amount of the old inner frame paper (200), and the detection roller (14) being capable of sending a signal to the synchronous and constant-speed driving mechanism so as to cause the new inner frame paper (100) to start performing equal-frequency and equal-speed intermittent linear motion.

10. The automatic splicing device for inner frame paper according to claim 9, characterized in that: The guide roller group (51), the creasing and cutting roller group (55) and the synchronous transmission assembly are transmission-connected.

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