CN213650125U - Double-servo fixed-length paper feeding device and cigarette packet packaging machine - Google Patents

Abstract

The utility model provides a double-servo fixed-length paper feeding device and a cigarette packet packaging machine, wherein the double-servo fixed-length paper feeding device comprises a nicking mechanism, a paper tape conveying mechanism and a color code detector; the scoring mechanism comprises a first servo motor, a top cutter shaft, a scoring shaft, a top cutter wheel fixed on the top cutter shaft, a scoring wheel fixed on the scoring shaft and a scoring transmission unit, the first servo motor is connected with the top cutter shaft and the scoring shaft through the scoring transmission unit, and the periphery of the scoring wheel is provided with a plurality of scoring stations and compensation gaps formed between every two adjacent scoring stations; the paper tape conveying mechanism comprises a second servo motor, a first paper feeding shaft, a second paper feeding shaft, a first paper feeding wheel fixed on the first paper feeding shaft, a second paper feeding wheel fixed on the second paper feeding shaft and a paper feeding transmission unit, and the second servo motor is connected with the first paper feeding shaft and the second paper feeding shaft through the paper feeding transmission unit. The method and the device can realize fixed-length paper tape conveying and ensure the color lump position and the U-shaped nick position on each fixed-length paper tape.

Description

Double-servo fixed-length paper feeding device and cigarette packet packaging machine

Technical Field

The utility model relates to a tobacco bale packing field especially relates to a two servo fixed length adsorption paper feeding device and include above-mentioned two servo fixed length adsorption paper feeding device's tobacco bale packagine machine.

Background

At present, a cigarette packet packaging machine is provided with a paper feeding device which is used for forming nicks on paper tapes and conveying the paper tapes; as shown in fig. 2, the scores include a U-shaped score 101 and dotted scores 102 located at both sides of the U-shaped score 101. As shown in fig. 1, a paper feeding device in the prior art includes a rotatable power shaft 200, a scoring wheel set 300 fixedly mounted on the power shaft 200, a rotatable driving shaft 400, a driving paper feeding wheel 500 fixed on the driving shaft 400, a rotatable driven shaft 600, and a driven paper feeding wheel 700 fixed on the driven shaft 600, wherein the power shaft 200 is connected with the driving shaft 400 through a gear pair, and the driving shaft 400 is connected with the driven shaft 600 through a gear pair. When the paper feeding device operates, on one hand, the power shaft 200 drives the scoring wheel set 300 to rotate, and the scoring wheel set 300 processes scores on paper tapes; on the other hand, the power shaft 200 drives the driving shaft 400 and the driving feed roller 500 to rotate through a gear pair, the driving shaft 400 drives the driven shaft 600 and the driven feed roller 700 to rotate through the gear pair, a paper tape passes through the scoring wheel set 300 and then is vertically input between the driving feed roller 500 and the driven feed roller 700, and the friction force between the driving feed roller 500 and the driven feed roller 700 drives the paper tape to move forwards, so that the purpose of conveying the paper tape is achieved. Therefore, in the conventional paper feeding device, the transmission power of the whole paper feeding device comes from the power shaft 200, and the power transmission systems of the scoring wheel set 300 and the driving paper feeding wheel 500 are on the same transmission chain. However, the conventional paper feeding device has the following problems:

1. along with the individual requirements of the cigarette packet, the paper feeding device is required to convey paper tapes in a fixed length mode for producing the fixed-length paper tapes. However, the paper feeding device can only meet the requirement of general paper tape conveying with low precision requirement, but cannot meet the requirements of the paper tape conveying precision requirement, the fixed-length paper tape conveying with color marks on the paper tape and the occasion that the front and the back of the paper tape conveying requirement can be adjusted.

2. As shown in FIG. 2, the position of the color block 103 on the fixed length paper tape 10 from the top of the paper tape and the position of the U-shaped notch 101 from the top of the paper tape are fixed positions, and generally, the position of the color block 103 on the fixed length paper tape 10 is 22mm from the top of the paper tape, and the position of the U-shaped notch 101 on the fixed length paper tape 10 is 34mm from the top of the paper tape. Firstly, the paper feeding device cannot meet the requirement of fixed-length paper tape conveying; secondly, due to the existence of manufacturing errors, the elasticity of the paper tape, printing system errors and other objective factors, the linear speeds of the driving paper feed wheel 500 and the driven paper feed wheel 700 cannot be equal to the linear speed of the scoring wheel set 300 in the process of pulling the fixed-length paper tape forwards by the driving paper feed wheel 500 and the driven paper feed wheel 700, so that the unidirectional accumulated error of the U-shaped score 101 on the paper tape from the position of the color block 103 is caused, the position of the U-shaped score 101 on the paper tape is changed after the paper tape is cut, and meanwhile, the position of the color block 103 is relatively floated, and finally, the paper tape cutting is not accurate.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcoming of the prior art, the utility model aims to provide a two servo fixed length adsorption paper feeding device, under the prerequisite that realizes the fixed length and carry the paper tape, guarantee simultaneously that the relative position of color lump and U-shaped nick on the paper tape is unchangeable.

In order to achieve the purpose, the utility model provides a double-servo fixed-length paper feeding device, which comprises a box body, a nicking mechanism, a paper tape conveying mechanism and a color code detector arranged on the box body, wherein the color code detector is arranged at the inlet end of the nicking mechanism; the notching mechanism comprises a first servo motor, a top cutter shaft, a notching shaft, a top cutter wheel, a notching wheel and a notching transmission unit, wherein the top cutter shaft and the notching shaft are rotatably arranged in a box body; the paper tape conveying mechanism comprises a second servo motor, a first paper feeding shaft and a second paper feeding shaft which are rotatably arranged in the box body, a first paper feeding wheel fixed on the first paper feeding shaft, a second paper feeding wheel fixed on the second paper feeding shaft and a paper feeding transmission unit, wherein the second servo motor is connected with the first paper feeding shaft and the second paper feeding shaft through the paper feeding transmission unit.

Furthermore, four scoring stations are arranged on the scoring wheel.

Furthermore, the double-servo fixed-length paper feeding device also comprises a first bracket fixed on the box body through a first screw and a second bracket fixed on the first bracket through a second screw, and the color code detector is fixed on the second bracket through a third screw; the first support is provided with a first adjusting hole extending left and right, and the first screw penetrates through the first adjusting hole; and a second adjusting hole extending up and down and a third adjusting hole extending back and forth are formed in the second support, the second screw penetrates through the second adjusting hole, and the third screw penetrates through the third adjusting hole.

Further, nick transmission unit includes first reduction gear, first gear assembly and second gear assembly, first servo motor links to each other with first gear assembly through first reduction gear, the top arbor is a gear shaft, has the gear shaft section with first gear assembly transmission complex, the top arbor passes through the second gear assembly and links to each other with the nick axle.

Further, the double-servo fixed-length paper feeding device also comprises an eccentric sleeve which is rotatably arranged in the box body, and the scoring shaft is rotatably supported in the eccentric sleeve through a first bearing.

Further, the second gear assembly comprises a first gear fixed on the top cutter shaft, and a second gear and a third gear which are both fixed on the scoring shaft, wherein the second gear and the third gear form a duplicate gear and are both meshed with the first gear.

Further, the paper feeding transmission unit comprises a second speed reducer, a third gear assembly and a fourth gear assembly, the second servo motor is connected with the third gear assembly through the second speed reducer, the third gear assembly is connected with the first paper feeding shaft, and the first paper feeding shaft is connected with the second paper feeding shaft through the fourth gear assembly.

Further, two servo fixed length adsorption paper feeding device is still including installing the pressure spring in the box, first paper feeding shaft rotationally supports in the box through the second bearing, the second paper feeding shaft rotationally supports in the box through the third bearing, pressure spring along the distribution direction axial extension of first paper feeding shaft and second paper feeding shaft, and with the cooperation of third bearing butt.

Further, the top knife shaft and the nicking shaft are arranged side by side in the front-rear direction, and the first paper feeding shaft and the second paper feeding shaft are arranged side by side in the up-down direction.

The utility model also provides a tobacco bale packing machine, be configured with as above among the tobacco bale packing machine two servo fixed length adsorption paper feeding device.

As above, the utility model relates to a two servo fixed length adsorption paper feeding device and tobacco bale packagine machine has following beneficial effect:

the scoring mechanism and the paper tape conveying mechanism are respectively driven by the double servo motors, so that the conveying length of the paper tape can be accurately controlled, the paper tape can be conveyed in a fixed length manner, and the scoring mechanism and the paper tape conveying mechanism can be suitable for conveying the paper tape in a fixed length manner with higher precision requirement; particularly, when the top cutter wheel is matched with the scoring wheel at the compensation gap of the scoring wheel, the compensation gap on the periphery of the scoring wheel enables the cutter not to cut the paper tape and generate a neutral period, and the output of the first servo motor can be adjusted according to the position of the color block on the paper tape detected by the color code detector in the neutral period, so that the position of the U-shaped score on the paper tape relative to the color block is dynamically adjusted, and the relative position of the color block on the paper tape and the U-shaped score is guaranteed to be unchanged. Therefore, on the premise of realizing the fixed-length paper tape conveying, the color lump position and the U-shaped nick position on each fixed-length paper tape are effectively ensured, and the quality of the fixed-length paper tape is finally ensured.

Drawings

Fig. 1 is a schematic structural diagram of a paper feeding device in the prior art.

Fig. 2 is a schematic view of a structure of a definite length paper tape.

Fig. 3 and 4 are schematic structural diagrams of a dual servo fixed-length paper feeding device in the application.

Fig. 5 is a side view of fig. 3.

Fig. 6 is an enlarged view of circle a of fig. 4.

Fig. 7 is a sectional view taken along line B-B of fig. 5.

Fig. 8 is a sectional view taken along line D-D of fig. 5.

Fig. 9 is an enlarged view of the C frame in fig. 8.

FIG. 10 is a schematic view of the scoring wheel of the present application.

Fig. 11 is a side view of fig. 10.

Fig. 12 is a schematic structural diagram of an encoder at a main shaft of the cigarette packet packaging machine in the application.

Description of the element reference numerals

10 fixed length paper tape

101U-shaped nick

102 dashed line score

103 color block

20 case body

21 fixed box

22 movable box

23 first hook

24 second hook

25 tensioning spring

30 scoring mechanism

31 first servo motor

32 top cutter shaft

33 scoring shaft

34 top cutter wheel

35 scoring wheel

351 scoring station

352 compensate for gaps

36 first speed reducer

37 eccentric sleeve

38 first gear

39 second gear

310 third gear

311 fourth Gear

312 support

313 gap bridge gear

40 paper tape conveying mechanism

41 second servomotor

42 first paper feeding shaft

43 second paper feeding shaft

44 first paper feeding wheel

45 second paper feeding wheel

46 second speed reducer

47 fixed block

48 fixed seat

49 adapter plate

410 fifth gear

411 sixth Gear

412 seventh gear

413 pressing spring

414 Gear set

50 color code detector

60 first screw

70 first support

80 second screw

90 second support

91 second regulating hole

92 third adjustment hole

111 spindle

112 encoder

113 connecting shaft

114 turntable

115 connecting plate

116 connecting bracket

117 connecting flange

118 connecting rod

120 third screw

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.

The utility model provides a tobacco bale packagine machine disposes two servo fixed length adsorption paper feeding device and electrical system among this tobacco bale packagine machine. As shown in fig. 3, the dual servo fixed length paper feeding apparatus according to the present invention includes a case 20, a scoring mechanism 30, a tape feeding mechanism 40, and a color scale detector 50 mounted to the case 20. As shown in fig. 3, 5 and 9, the scoring mechanism 30 includes a first servo motor 31, a top knife shaft 32 and a scoring shaft 33 both rotatably installed in the box body 20, a top knife wheel 34 fixed on the top knife shaft 32, a scoring wheel 35 fixed on the scoring shaft 33, and a scoring transmission unit, wherein the first servo motor 31 is connected with the top knife shaft 32 and the scoring shaft 33 through the scoring transmission unit to drive the top knife shaft 32 and the scoring shaft 33 to rotate; the top cutter wheel 34 is a smooth roller; as shown in fig. 10 and 11, the periphery of the scoring wheel 35 is provided with a plurality of scoring stations 351 which are uniformly distributed in the circumferential direction and are matched with the top cutter wheel 34, and a compensation gap 352 formed between two adjacent scoring stations 351, a cutter fixed on the periphery of the scoring wheel 35 is arranged at each scoring station 351, and when the scoring stations 351 on the periphery of the scoring wheel 35 are matched with the top cutter wheel 34, the cutter cuts the paper tape to cut a U-shaped score 101 and a dotted score 102 on the paper tape, as shown in fig. 2; when the offset notch 352 in the periphery of the score wheel 35 mates with the top cutter wheel 34, the cutter does not cut the tape, creating a dead-end. As shown in fig. 3, and fig. 7 and 8, the tape feeding mechanism 40 includes a second servo motor 41, a first feeding shaft 42 and a second feeding shaft 43 both rotatably installed in the case 20, a first feeding roller 44 fixed to the first feeding shaft 42, a second feeding roller 45 fixed to the second feeding shaft 43, and a feeding transmission unit, and the second servo motor 41 is connected to the first feeding shaft 42 and the second feeding shaft 43 through the feeding transmission unit to drive the first feeding shaft 42 and the second feeding shaft 43 to rotate. As shown in fig. 3, the color code detector 50 is disposed at the inlet end of the scoring mechanism 30, i.e., at a station prior to the scoring wheel 35, where the paper web passes first through the color code detector 50 and then through the scoring wheel 35.

In the double-servo fixed-length paper feeding device, the color mark detector 50, the first servo motor 31 and the second servo motor 41 are all in communication connection with the electronic control system. When the double-servo fixed-length paper feeding device operates, the scoring mechanism 30: the first servo motor 31 drives the top knife shaft 32 and the scoring shaft 33 to rotate through the scoring transmission unit, the top knife shaft 32 drives the top knife wheel 34 to synchronously rotate, the scoring shaft 33 drives the scoring wheel 35 to synchronously rotate, and a paper tape forms a cut score when passing between the top knife wheel 34 and the scoring wheel 35, namely a U-shaped score 101 and a dotted line score 102 are cut on the paper tape through the matching of the top knife wheel 34 and a scoring station 351 on the scoring wheel 35. Further, the color patch detector 50 detects color patches 103 on the paper tape at the inlet end of the scoring mechanism 30 and sends the position information of the color patches to the electronic control system; when the top knife wheel 34 is matched with the notch wheel 35 at the compensation notch 352 of the notch wheel 35, the electronic control system adjusts the output of the first servo motor 31 according to the color block position information fed back by the color mark detector 50 in the neutral period, so that the first servo motor 31 rotates forwards or backwards for an angle, and the rotation speed and the phase of the first servo motor 31 are dynamically adjusted, thereby dynamically adjusting the position of the U-shaped notch 101 on the paper tape relative to the color block 103, and ensuring that the relative positions of the color block 103 and the U-shaped notch 101 on the paper tape are not changed. For the tape feed mechanism 40: the second servo motor 41 drives the first paper feeding shaft 42 and the second paper feeding shaft 43 to rotate through the paper feeding transmission unit, the first paper feeding shaft 42 drives the first paper feeding wheel 44 to rotate, the second paper feeding shaft 43 drives the second paper feeding wheel 45 to rotate, the paper tape passes through the space between the first paper feeding wheel 44 and the second paper feeding wheel 45, and the friction force between the first paper feeding wheel 44 and the second paper feeding wheel 45 drives the paper tape to move forwards; because the scoring mechanism 30 can accurately control the relative position of the color block 103 and the U-shaped score 101 on the paper tape, the electric control system can realize fixed-length paper tape conveying only by controlling the output of the second servo motor 41, and can be suitable for conveying fixed-length paper tapes 10 with higher precision requirements, and the error of the fixed-length paper tape conveying can be controlled within 0.1-0.5 mm. Therefore, on the premise of realizing the fixed-length paper tape conveying, the color block position and the U-shaped nick 101 position of each fixed-length paper tape 10 are effectively ensured, namely, the fixed-length paper tape 10 is effectively ensured to have the same length, the same color block position and the same U-shaped nick 101 position, and finally the quality of the fixed-length paper tape 10 is ensured.

Preferably, as shown in fig. 3 and 7 to 9, the top blade shaft 32, the scoring shaft 33, the first paper feeding shaft 42 and the second paper feeding shaft 43 extend in parallel and in the left-right direction; the top knife shaft 32 and the scoring shaft 33 are arranged side by side in the front-rear direction, the first paper feeding shaft 42 and the second paper feeding shaft 43 are arranged side by side in the up-down direction, the first paper feeding shaft 42 and the second paper feeding shaft 43 are arranged on the upper side of the top knife shaft 32 and the scoring shaft 33 at the same time, and the first paper feeding shaft 42 is positioned on the lower side of the second paper feeding shaft 43. Thus, the direction of movement of the tape in the scoring mechanism 30 is upward and the direction of movement of the tape in the tape feed mechanism 40 is forward. As shown in fig. 11, four scoring stations 351 are provided on the scoring wheel 35, thereby forming four offset notches 352 in the outer circumference of the scoring wheel 35.

Further, as shown in fig. 3 and 9, the case 20 includes a fixed case 21, a movable case 22 hinged at an upper end of the fixed case 21, and a locking mechanism connected between the fixed case 21 and the movable case 22, the locking mechanism enabling the movable case 22 to be locked at the upper end of the fixed case 21 and the movable case 22 to be rotated upward with respect to the fixed case 21, the top cutter shaft 32, the scoring shaft 33, and the first paper feeding shaft 42 are rotatably supported in the fixed case 21, and the second paper feeding shaft 43 is rotatably supported in the movable case 22. Accordingly, when the paper tape passes through the paper tape conveying mechanism 40, the locking between the movable case 22 and the fixed case 21 is released by the locking mechanism, and the movable case 22 is rotated upward, so that the movable case 22 drives the second paper feeding shaft 43 and the second paper feeding wheel 45 to move upward together, the gap between the second paper feeding wheel 45 and the first paper feeding wheel 44 is enlarged, and the paper tape is conveniently passed through between the first paper feeding wheel 44 and the second paper feeding wheel 45. After the paper tape passes through, the movable box 22 is reset, and the movable box 22 is locked at the upper end of the fixed box 21 through a locking mechanism. Preferably, the locking mechanism comprises a first hook 23 fixedly connected with the fixed box 21, a second hook 24 hinged to the movable box 22, and a tension spring 25 connected between the movable box 22 and the second hook 24; in the locked state, as shown in fig. 9, the lower ends of the first hook 23 and the second hook 24 are engaged with each other, thereby locking the movable box 22 to the upper end of the fixed box 21; the tension spring 25 applies an acting force towards the first hook 23 to the second hook 24, so that the clamping stability of the first hook 23 and the second hook 24 is ensured; when unlocking, the first hook 24 is turned over outwards by applying force, and then the movable box 22 can be turned over upwards.

Further, as shown in fig. 3, 4 and 6, the dual servo fixed-length paper feeding device further includes a first bracket 70 fixed to the fixed case 21 in the case 20 by a first screw 60, and a second bracket 90 fixed to the first bracket 70 by a second screw 80, and the color patch detector 50 is fixed to the second bracket 90 by a third screw 120; a first adjusting hole extending left and right is formed in the first bracket 70, and a first screw 60 penetrates through the first adjusting hole; the second bracket 90 is provided with a second adjusting hole 91 extending vertically and a third adjusting hole 92 extending forward and backward, the second screw 80 is inserted into the second adjusting hole 91, and the third screw 120 is inserted into the third adjusting hole 92. After adopting above-mentioned structure, the left and right positions of first support 70 for fixed box 21 is adjustable, and the upper and lower position of second support 90 for fixed box 21 is adjustable, and the front and back position of color mark detector 50 for second support 90 is adjustable to can adjust the left and right sides of color mark detector 50, around and from top to bottom position, realize no matter what position color piece 103 on the paper tape, color mark detector 50 can both detect color piece 103 on the paper tape and can normally work. Preferably, the patch detector 50 is a KTS patch sensor of the SICK, and the detection area is a square patch.

Further, the preferable structure of the score transmission unit is: as shown in fig. 3 and 7, the scoring transmission unit includes a first reducer 36, a first gear assembly, and a second gear assembly, the first reducer 36 is fixedly installed in the left side of the fixed box body 21 in the box body 20 through screws, the first servo motor 31 is connected with the first gear assembly through the first reducer 36, the top knife shaft 32 is a gear shaft, the left end of the top knife shaft has a gear shaft section in transmission fit with the first gear assembly, the top knife shaft 32 is connected with the scoring shaft 33 through the second gear assembly, so the top knife shaft 32 is a driving shaft, and the scoring shaft 33 is a driven shaft. Preferably, the dual servo fixed length paper feeding apparatus further comprises a pair of eccentric sleeves 37 rotatably installed in the stationary case 21, the notch shaft 33 being rotatably supported in the eccentric sleeves 37 through a first bearing; the eccentric sleeve 37 is rotated to adjust the position of the scoring shaft 33 relative to the top knife shaft 32, so as to adjust the distance between the scoring wheel 35 and the top knife wheel 34, so as to adjust the pressure between the scoring wheel 35 and the top knife wheel 34, thereby achieving the purpose of adjusting the depth of the cut mark. The top cutter shaft 32 is rotatably supported in the stationary box 21 by a needle bearing. The middle of the cutter-ejecting wheel 34 is provided with a buffer layer supported by polyurethane, which can protect the cutting edge of the cutter.

Based on the structure that the position of the scoring shaft 33 can be adjusted, as shown in fig. 7, the second gear assembly in the present application includes a first gear 38 fixed on the top knife shaft 32, and a second gear 39 and a third gear 310 both fixed on the scoring shaft 33, the second gear 39 and the third gear 310 are arranged side by side along the axial direction of the scoring shaft 33, and the second gear 39 and the third gear 310 constitute a duplicate gear and are both meshed with the first gear 38. In addition, the clearance between the first gear 38 and the second gear 39, and the clearance between the first gear 38 and the third gear 310 allow the position of the scoring shaft 33 to float, the second gear 39 is tightly engaged with the first gear 38 in the front direction, and the third gear 310 is tightly engaged with the first gear 38 in the rear direction, thereby ensuring the transmission accuracy of the second gear assembly. The first gear assembly includes a fourth gear 311 fixed to an output end of the first reducer 36, a holder 312 fixed to the fixed housing 21 in the housing 20 by a screw, and a carrier gear 313 rotatably mounted to the holder 312 by a rolling bearing, the fourth gear 311 being engaged with the carrier gear 313, and the carrier gear 313 being engaged with a gear shaft section of the top cutter shaft 32. The output end of the first speed reducer 36 is connected with the fourth gear 311 and the top cutter shaft 32 is connected with the first gear 38 in a key mode.

The transmission process of the scoring transmission unit comprises the following steps: the first servo motor 31 drives the first speed reducer 36 to rotate, the first speed reducer 36 drives the fourth gear 311 to rotate, the fourth gear 311 drives the carrier gear 313 to rotate, the carrier gear 313 drives the top cutter shaft 32 to rotate, the top cutter wheel 34 and the first gear 38 synchronously rotate along with the top cutter shaft 32, the first gear 38 drives the second gear 39 and the third gear 310 to rotate, finally, the scoring shaft 33 and the scoring wheel 35 are driven to synchronously rotate, and the U-shaped scoring and dotted line scoring of the paper tape is completed when the paper tape passes through the space between the top cutter wheel 34 and the scoring wheel 35.

Further, the preferable structure of the paper feed transmission unit is: as shown in fig. 3, 8 and 9, the paper feeding transmission unit includes a second reducer 46, a third gear assembly, and a fourth gear assembly, the second servo motor 41 is connected to the third gear assembly through the second reducer 46, the third gear assembly is connected to the first paper feeding shaft 42, and the first paper feeding shaft 42 is connected to the second paper feeding shaft 43 through the fourth gear assembly, so that the first paper feeding shaft 42 is a driving shaft and the second paper feeding shaft 43 is a driven shaft. A fixed block 47 for supporting the second speed reducer 46 is fixed on the right side of the fixed box 21 in the box body 20 through screws, a fixed seat 48 is fixedly connected to the fixed block 47 through screws and pins, and the second speed reducer 46 is fixed on the fixed seat 48 through screws and pins; an aluminum sealing gasket is arranged between the fixed seat 48 and the fixed box body 21 and used for lubricating and sealing the gear. The third gear assembly includes an adapter plate 49 fixed to the output end of the second decelerator 46, a fifth gear 410 fixed to the adapter plate 49, and a sixth gear 411 fixed to the right end of the first paper feeding shaft 42, and the fifth gear 410 is engaged with the sixth gear 411. The fourth gear assembly includes a seventh gear 412 fixed at the left end of the first paper feeding shaft 42 and a gear set 414 fixed at the left end of the second paper feeding shaft 43, the seventh gear 412 is engaged with the gear set 414, and the gear set 414 is a duplicate gear, so as to ensure the transmission precision between the gear set 414 and the seventh gear 412. The first paper feeding shaft 42 is connected with the sixth gear 411, the first paper feeding shaft 42 is connected with the seventh gear 412, and the second paper feeding shaft 43 is connected with the gear set 414.

The transmission process of the paper feeding transmission unit comprises the following steps: the second servo motor 41 drives the second speed reducer 46 to rotate, the second speed reducer 46 drives the adapter plate 49 and the fifth gear 410 to rotate, the fifth gear 410 drives the sixth gear 411 to rotate, the first paper feeding shaft 42, the first paper feeding wheel 44 and the seventh gear 412 rotate synchronously with the sixth gear 411, the seventh gear 412 drives the gear set 414 to rotate, the second paper feeding shaft 43 and the second paper feeding wheel 45 rotate synchronously with the gear set 414, and the paper tape is clamped between the first paper feeding wheel 44 and the second paper feeding wheel 45 and is conveyed forwards. The electronic control system can dynamically adjust the conveying speed of the paper tape by controlling the rotating speed and the rotating direction of the second servo motor 41.

Further, as shown in fig. 9, the dual servo fixed length paper feeding apparatus further includes a pressing spring 413 installed in the movable case 22 in the case 20; the left and right ends of the first paper feeding shaft 42 are rotatably supported in the fixed box 21 through second bearings, and the outer side of the right second bearing is provided with a sealing ring, and the sealing ring and the second bearing are fixed in the fixed box 21 through gaskets; both left and right ends of the second paper feeding shaft 43 are rotatably supported in the movable case 22 by a third bearing, which is a square bearing; the pressing spring 413 extends axially up and down along the distribution direction of the first paper feeding shaft 42 and the second paper feeding shaft 43 and is in abutting fit with the outer peripheral surface of the third bearing, so as to press the square third bearing, so as to ensure that a gap of 0.2mm is formed between the first paper feeding wheel 44 and the second paper feeding wheel 45, and ensure that the first paper feeding wheel and the second paper feeding wheel drive the paper tape to move forward by friction.

Further, a starting signal of the double-servo fixed-length paper feeding device comes from a main shaft 111 in the cigarette packet packaging machine, based on the starting signal, an encoder 112 is installed on the main shaft 111 of the cigarette packet packaging machine, the encoder 112 is in communication connection with an electric control system, the electric control system obtains the phase of the main shaft 111 through the feedback of the encoder 112, and then the starting of the first servo motor 31 and the second servo motor 41 in the double-servo fixed-length paper feeding device is controlled, so that the conveying phase of the paper tape is matched with the cutting system of the paper tape. The color mark detector 50 detects a first color block 103 on the paper tape, the electronic control system sets a reference zero point according to the phase position of the main shaft 111 and the position of the color block in the cigarette packet packaging machine, the scoring wheel 35 positions the relative position of the U-shaped score 101 relative to the color block 103 according to the reference zero point, and the first paper feeding wheel 44 and the second paper feeding wheel 45 determine the fixed length of conveying according to the reference zero point positioning.

Preferably, the connection structure between the encoder 112 and the main shaft 111 of the cigarette packet packaging machine is preferably: as shown in fig. 12, a connecting shaft 113 is fixedly connected to an end of the main shaft 111, and a turntable 114 is fixedly connected to an outer end of the connecting shaft 113 through a screw; the encoder 112 is fixed on a connecting plate 115 through screws, the connecting plate 115 is fixed on a connecting bracket 116 through screws, and the connecting bracket 116 is fixed on a connecting flange 117 through screws; the shaft member of the encoder 112 is fixedly connected with a connecting rod 118 through a screw, the connecting rod 118 is further provided with a connecting groove, and a pin fixed on the rotary table 114 is embedded in the connecting groove of the connecting rod 118. When the main shaft 111 rotates, the main shaft 111 drives the connecting shaft 113 and the rotary table 114 to rotate together, the rotary table 114 directly stirs the connecting rod 118 to rotate, and then the encoder 112 is driven to rotate, so that the encoder 112 and the main shaft 111 synchronously move, and the phase of the main shaft 111 can be obtained through the output of the encoder 112.

In conclusion, the double-servo fixed-length paper feeding device related to the application adopts double servo motors to drive the ejector cutter wheel 34, the nicking wheel 35, the first paper feeding wheel 44 and the second paper feeding wheel 45 respectively, the relative position of the color block 103 and the U-shaped nick 101 on the paper tape and the fixed-length conveying length of the paper tape can be accurately controlled through an electric appliance control program, each fixed-length paper tape 10 is guaranteed to have the same length, the color block position and the U-shaped nick 101 position, the double-servo fixed-length paper feeding device is suitable for conveying the fixed-length paper tape 10 with higher precision requirements, the fixed-length conveying error of the paper tape can be controlled within 0.1-0.5mm, and therefore the adaptability of tobacco equipment to packaging auxiliary materials is improved, the appearance of cigarette packets is improved, the attractiveness of. In addition, the double-servo fixed-length paper feeding device is high in adaptability, and users can freely switch conventional conveying and fixed-length conveying of paper tapes according to own requirements. In addition, this application can reequip on original adsorption paper feeding device, reduce cost, simple structure, and the adjustment is convenient.

Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a two servo fixed length adsorption paper feeding device which characterized in that: the paper tape marking device comprises a box body (20), a scoring mechanism (30), a paper tape conveying mechanism (40) and a color code detector (50) arranged on the box body (20), wherein the color code detector (50) is arranged at the inlet end of the scoring mechanism (30);

the scoring mechanism (30) comprises a first servo motor (31), a top cutter shaft (32) and a scoring shaft (33) which are rotatably installed in the box body (20), a top cutter wheel (34) fixed on the top cutter shaft (32), a scoring wheel (35) fixed on the scoring shaft (33) and a scoring transmission unit, wherein the first servo motor (31) is connected with the top cutter shaft (32) and the scoring shaft (33) through the scoring transmission unit, a plurality of scoring stations (351) which are uniformly distributed in the circumferential direction and matched with the top cutter wheel (34) and compensation notches (352) formed between two adjacent scoring stations (351) are arranged on the periphery of the scoring wheel (35), and a cutter fixed on the periphery of the scoring wheel (35) is arranged at each scoring station (351);

the paper tape conveying mechanism (40) comprises a second servo motor (41), a first paper feeding shaft (42) and a second paper feeding shaft (43) which are rotatably installed in the box body (20), a first paper feeding wheel (44) fixed on the first paper feeding shaft (42), a second paper feeding wheel (45) fixed on the second paper feeding shaft (43) and a paper feeding transmission unit, wherein the second servo motor (41) is connected with the first paper feeding shaft (42) and the second paper feeding shaft (43) through the paper feeding transmission unit.

2. The dual servo fixed length paper feed apparatus of claim 1, wherein: four nicking stations (351) are arranged on the nicking wheel (35).

3. The dual servo fixed length paper feed apparatus of claim 1, wherein: the color mark detector also comprises a first bracket (70) fixed on the box body (20) through a first screw (60) and a second bracket (90) fixed on the first bracket (70) through a second screw (80), and the color mark detector (50) is fixed on the second bracket (90) through a third screw (120); the first support (70) is provided with a first adjusting hole extending left and right, and the first screw (60) penetrates through the first adjusting hole; and a second adjusting hole (91) extending up and down and a third adjusting hole (92) extending back and forth are formed in the second support (90), the second screw (80) penetrates through the second adjusting hole (91), and the third screw (120) penetrates through the third adjusting hole (92).

4. The dual servo fixed length paper feed apparatus of claim 1, wherein: the scoring transmission unit comprises a first speed reducer (36), a first gear assembly and a second gear assembly, the first servo motor (31) is connected with the first gear assembly through the first speed reducer (36), the top cutter shaft (32) is a gear shaft and is provided with a gear shaft section matched with the first gear assembly in a transmission mode, and the top cutter shaft (32) is connected with the scoring shaft (33) through the second gear assembly.

5. The dual servo fixed length paper feed apparatus of claim 4, wherein: further comprising an eccentric sleeve (37) rotatably mounted in the housing (20), the scoring shaft (33) being rotatably supported in the eccentric sleeve (37) by a first bearing.

6. The dual servo fixed length paper feed apparatus of claim 5, wherein: the second gear assembly comprises a first gear (38) fixed on the top cutter shaft (32), and a second gear (39) and a third gear (310) which are both fixed on the scoring shaft (33), wherein the second gear (39) and the third gear (310) form a duplicate gear and are both meshed with the first gear (38).

7. The dual servo fixed length paper feed apparatus of claim 1, wherein: the paper feeding transmission unit comprises a second speed reducer (46), a third gear assembly and a fourth gear assembly, wherein the second servo motor (41) is connected with the third gear assembly through the second speed reducer (46), the third gear assembly is connected with a first paper feeding shaft (42), and the first paper feeding shaft (42) is connected with a second paper feeding shaft (43) through the fourth gear assembly.

8. The dual servo fixed length paper feed apparatus of claim 1, wherein: still including installing pressure spring (413) in box (20), first paper feeding shaft (42) rotatably supports in box (20) through the second bearing, second paper feeding shaft (43) rotatably supports in box (20) through the third bearing, pressure spring (413) along the distribution direction axial extension of first paper feeding shaft (42) and second paper feeding shaft (43), and with the cooperation of third bearing butt.

9. The dual servo fixed length paper feed apparatus of claim 1, wherein: the top cutter shaft (32) and the scoring shaft (33) are arranged side by side in the front-rear direction, and the first paper feeding shaft (42) and the second paper feeding shaft (43) are arranged side by side in the up-down direction.

10. A cigarette packet packaging machine is characterized in that: the cigarette packet packaging machine is provided with the double-servo fixed-length paper feeding device of any one of claims 1 to 9.

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