CN113021433B - Automatic cutting-off, controlling and discharging mechanism for single or multiple straws - Google Patents

Abstract

The invention relates to a single or multiple automatic cutting-off, material controlling and discharging mechanism for a suction pipe, which comprises an air expansion shaft, wherein the suction pipe material is wound on the air expansion shaft, and a discharging driving mechanism drives the air expansion shaft to rotate so as to realize outward conveying of the suction pipe material. The invention realizes automatic cutting and spitting of a single or a plurality of straws by the die wheel mechanism, is more stable than the existing mode of driving the straws by the belt, and has no slipping, more cutting, less cutting, straw cutting and other conditions. Meanwhile, the automatic cutting and discharging mechanism has the advantages of simple structure, stable operation and convenient maintenance, and the operation speed of the automatic cutting and discharging mechanism is one time faster than that of the existing automatic cutting and discharging mechanism of the suction pipe, so that the limit speed of automatic cutting and discharging of a single suction pipe or a plurality of suction pipes is broken through.

Description

Automatic cutting-off, controlling and discharging mechanism for single or multiple straws

Technical Field

The invention relates to a single or multiple automatic cutting and spitting mechanism for oral liquid straws, which is also applicable to similar products requiring straw addition.

Background

As shown in fig. 1 and 2, the existing automatic cutting and spitting mechanism for the suction pipe comprises a vertical plate housing 1, an air-expanding material bearing shaft 2, a tensioning wheel 3, a guiding transition wheel 4, a guiding track 5, a pair of symmetrically arranged material-controlling feeding clamping belts 6, a feeding belt 7, a motor 8, a servo motor 9, a material-controlling groove type photoelectric device 10 and a cutter 11, so that the function of single or multiple automatic material-controlling throwing is realized.

The straw material comprises a plurality of straw bodies, each straw body is positioned in one plastic sealing bag, and adjacent plastic sealing bags are connected together through connecting parts, so that the straw material forms a strip-shaped structure. The automatic straw cutting and discharging mechanism shown in fig. 1 and 2 is used for cutting the whole roll of straw materials, cutting off the connecting parts in the straw materials, and obtaining a single straw wrapped in a plastic sealing bag or a plurality of straws respectively wrapped in the plastic sealing bags and connected together through the connecting parts. The automatic straw cutting and ejecting mechanism shown in fig. 1 and 2 operates as follows:

the whole roll of straw materials to be cut is wound on the inflatable shaft 2, and the banded straw materials firstly pass through one or more guide transition wheels 4 in the guide transition wheel sets, then pass through the tensioning wheel 3, return to the guide transition wheel sets, pass through the guide track 5 after passing through the rest guide transition wheels 4 in the guide transition wheel sets, and enter the material control feeding entrainer 6. The material control feeding entrainer 6 is driven by a servo motor 9 to convey straw materials to a cutter 11. During the conveying process, the trough-control type photoelectric device 10 controls to deliver only one straw body to the cutter 11 at a time or deliver a plurality of straw bodies to the cutter 11 at a time. After each time of conveying, the connecting part at the corresponding position is cut off by the cutter 11, and the cut single straw or a plurality of straws connected together are sent out by the feeding belt 7 to finish discharging.

The existing automatic cutting and spitting mechanism for the straw can realize the function of automatically cutting and controlling the feeding of single or multiple straws, but has very high requirements on straw materials. After the straw body on the straw material is clamped by the material control feeding clamping belt 6, the straw material is driven to be conveyed forwards by friction. If the thickness of the straw body on the straw material is different, the material control feeding clamping belt 6 cannot form effective clamping on the thinner straw body, so that slipping phenomenon occurs when the straw material is conveyed forwards. On the one hand, the number of straws cut by the cutter 11 may not reach the expected number, and on the other hand, the cutter 11 is cut on the straw body, so that the straws are scrapped. Because the material control feeding entrainer 6 is required to form effective clamping on the thinner straw body, the tension and center distance requirements on the material control feeding entrainer 6 are very high. After long-time production, the material control feeding entrainment 6 is difficult to loosen, so that the tension degree and the center distance of the material control feeding entrainment cannot reach the expected verticality, and the material control feeding entrainment 6 cannot form effective clamping on the straw body to cause slipping. Besides the very high tension and center distance requirements for the material control feeding entrainment 6, in order to ensure effective clamping of the straw body, the friction and flexibility requirements for the material control feeding entrainment 6 are also very high, so that the material control feeding entrainment 6 must be replaced in time after a period of use, resulting in higher replacement frequency of the material control feeding entrainment 6. In the automatic cutting and spitting mechanism of the suction pipe shown in fig. 1 and 2, the distance between the suction pipe body and the cutter 11 is relatively large when the suction pipe body is used for controlling the feeding and entrainment 6, and the cutter 11 can be mistakenly cut to the suction pipe body due to a certain expansion and contraction of the suction pipe material.

Disclosure of Invention

The invention aims to solve the technical problems that: the existing automatic cutting and spitting mechanism for the suction pipe is easy to cut the suction pipe body by mistake and has unstable performance.

In order to solve the technical problems, the technical scheme of the invention provides a single or multiple automatic cutting and material controlling and discharging mechanism for straws, which comprises an air expansion shaft, wherein straw materials are wound on the air expansion shaft, and a discharging driving mechanism drives the air expansion shaft to rotate so as to realize outward conveying of the straw materials; defining a plastic sealing bag wrapped with a single straw body as a single straw, and defining at least two connected plastic sealing bags each wrapped with a straw body as a plurality of straws; after the die wheel rotates, the cut single straw or multiple straws on the die wheel fall off from the die wheel through the forced stripping mechanism, so that the single straw or multiple straws are discharged;

k die wheel grooves are uniformly distributed on the outer circumferential surface of the die wheel along the axial direction, wherein K is more than or equal to 1, and each die wheel groove circumferentially surrounds the die wheel;

the forced stripping mechanism comprises K stripping teeth, the front ends of the K stripping teeth are distributed and extend into K die wheel grooves, and when the die wheel rotates, the front ends of the stripping teeth are utilized to strip the single straw or the plurality of straws from the die wheel.

Preferably, the tensioning wheel moves between a stop feed position and a feed position:

when the tensioning wheel is positioned at a material feeding stop position, the material feeding driving mechanism stops working, the straw material is completely tensioned on the transition guide wheel set I and the tensioning wheel, and the die wheel driving mechanism drives the die wheel, so that the die wheel synchronously drives the tensioning wheel to move towards feeding through the straw material;

when the tensioning wheel is positioned at the material feeding position, the die wheel driving mechanism stops working, the discharging driving mechanism drives the air expansion shaft to rotate and then outwards convey the straw material, and meanwhile, the tensioning wheel synchronously moves towards the material feeding stopping position until the tensioning wheel moves to the material feeding stopping position, and the discharging driving mechanism stops working.

Preferably, the tension wheel is instructed to move to the feeding position by a photoelectric device on the material control; and indicating the tensioning wheel to move to the stop feeding position through a photoelectric device under the material control.

Preferably, the guiding transition mechanism comprises a guiding transition plate, a transition guiding wheel set II and a rolling wheel set, wherein the straw material out of the transition guiding wheel set I is sent into the guiding transition plate, and the guiding transition plate limits the straw material to be horizontally and forwards conveyed to the transition guiding wheel set II; the second transition guide wheel set is matched with the die wheel, and the straw material which is guided out of the transition plate winds around the outer circumferential surface of the die wheel after passing through the second transition guide wheel set; when the die wheel rotates, the straw material wound on the outer circumferential surface of the die wheel is brought to the position of the cutter after passing through the gap between the rolling press wheel set and the die wheel, and the rolling press wheel set is pressed on the straw material by controlling the gap between the rolling press wheel set and the die wheel, so that the straw material is clamped on the outer circumferential surface of the die wheel.

Preferably, the outer circumferential surface of the die wheel is provided with N teeth and N cutter grooves, the N teeth and the N cutter grooves are uniformly distributed at intervals along the circumferential direction of the outer circumferential surface of the die wheel, and each tooth and each cutter groove are arranged along the axial direction of the die wheel;

the tooth shape of each tooth is matched with the shape of each straw body in the straw material, so that each straw body can be clamped on the tooth at the corresponding position; the connecting part in the straw material is positioned at the position of the cutter groove, and the cutter extends into the cutter groove so as to cut off the connecting part at the corresponding position;

when the discharging of a single straw is required to be completed, the angle alpha of each rotation of the die wheel is 360/N degrees;

when the discharging of a plurality of straws is required to be completed, the discharging of M straws is required to be completed, and M is more than or equal to 2, and then the angle alpha of each rotation of the die wheel is M× (360/N) degrees.

Preferably, the automatic feeding machine further comprises an arc guard plate, after the single straw or the plurality of straws are cut off from the straw materials by the cutter, the single straw or the plurality of straws are discharged through the clearance between the arc guard plate and the die wheel and then through the forced stripping mechanism, and the cut-off single straw or the plurality of straws are ensured to be firmly clamped on the die wheel by controlling the clearance between the arc guard plate and the die wheel.

Compared with the prior art, the invention has the beneficial effects that:

the invention realizes automatic cutting and spitting of a single or a plurality of straws by the die wheel mechanism, is more stable than the existing mode of driving the straws by the belt, and has no slipping, more cutting, less cutting, straw cutting and other conditions. Meanwhile, the automatic cutting and discharging mechanism has the advantages of simple structure, stable operation and convenient maintenance, and the operation speed of the automatic cutting and discharging mechanism is one time faster than that of the existing automatic cutting and discharging mechanism of the suction pipe, so that the limit speed of automatic cutting and discharging of a single suction pipe or a plurality of suction pipes is broken through.

Drawings

FIGS. 1 and 2 are schematic views showing a conventional automatic straw cutting and ejecting mechanism;

FIG. 3 is a front view (partially cut-away) of an automatic cut-off, material-control and spitting mechanism for a single or multiple suction tube in accordance with the present invention;

FIG. 4 is a rear view of a single or multiple straw automatic shut-off, controlled feed discharge mechanism according to the present invention;

FIG. 5 is a front view of a single or multiple straw automatic cut-off, material control and ejection mechanism according to the present invention;

fig. 6 is a perspective view of a single or multiple straw automatic cutting, controlling and discharging mechanism according to the present invention.

Detailed Description

The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.

The invention aims to provide an advanced mechanism which has advanced structure, exquisite design, simple structure and convenient maintenance, can realize single or multiple automatic cutting-off and material controlling throwing, and has stable high-speed running and speed up to 130 times per minute. Similar to the prior art, the straw material treated by the invention comprises a plurality of straw bodies, each straw body is positioned in one plastic sealing bag, and adjacent plastic sealing bags are connected together through a connecting part, so that the straw material forms a strip-shaped structure. For the convenience of those skilled in the art to understand the present invention, a plastic sealed pouch wrapped with a single straw body is defined as a single straw, and at least two connected plastic sealed pouches each wrapped with one straw body are defined as a plurality of straws.

As shown in fig. 3, 4 and 5, the automatic cutting, controlling and discharging mechanism for single or multiple straws provided by the invention comprises: the device comprises an air expansion shaft 2, a transition guide wheel set 12, a tensioning wheel 13, a rolling pinch roller assembly 14, a cutter 11, a wallboard 15, a guide transition plate 16, a transition guide wheel 17, a die wheel 18, a forced stripping plate 19, an arc-shaped guard plate 20, a die wheel bearing seat 21, a die wheel shaft 22, an air expansion shaft bearing seat 23, a cutter cylinder 24, a cutter cylinder seat 25, a material control servo motor 26, a material discharge motor 27, a tensioning wheel sliding seat 28, a material control upper photoelectric device 29 and a material control lower photoelectric device 30.

The inflatable shaft 2 is matched and mounted on an inflatable shaft bearing seat 23, and then integrally mounted on the wallboard 15. The transition guide wheel sets 12 and 17 are mounted on the wall plate 15. The wallboard 15 is provided with a tensioning slide rail, the tensioning wheel slide seat 28 is arranged on the tensioning slide rail, and the tensioning wheel 04 is arranged on the tensioning wheel slide seat 28, so that the tensioning wheel 04 can move up and down along the tensioning slide rail. The guide transition plate 16 is mounted on the wall plate 15 such that the guide plane of the guide transition plate 16 is aligned with the one of the transition guide wheels 12 that interfaces with the guide transition plate 16 and such that the guide plane of the guide transition plate 16 is aligned with the outer diameter of the transition guide wheel 17. The die wheel shaft 22 is cooperatively mounted to the die wheel bearing block 21 and integrally mounted to the wall plate 15. The die wheel 18 is mounted to a die wheel shaft 22. After the rolling pinch roller assembly 14 is mounted on the pinch roller base, it is integrally mounted on the wall plate 15. The pinch roller belt of the rolling pinch roller assembly 14 is pressed to the die wheel 18, and the die wheel 18 drives the rolling pinch roller assembly 14 to roll. The cutter 11 is mounted on a cutter holder, which in turn is mounted on a slide rail holder. The inner rod of the cutter cylinder 24 is mounted on a slide rail seat, and the base of the cutter cylinder 24 is mounted on a cutter cylinder seat 25. The discharging motor 27 is arranged on the wallboard 15 and connected with the tail end of the inflatable shaft 2 by a synchronous belt. The arc guard 20 is mounted on the wall 15, the arc of the arc guard 20 being concentric with the die wheel 18. The side edge of the forced stripper plate 19 is arranged on the wall plate 15, and three stripper teeth are fixed on the installation plane of the forced stripper plate 19.

In operation, first the straw material 31 is mounted to the inflatable shaft 2. The material control servo motor 26 drives the die wheel 18 to rotate through the die wheel shaft 22. The outer circumferential surface of the die wheel 18 is provided with 36 teeth and 36 cutter grooves, and the 36 teeth and the 36 cutter grooves are uniformly distributed at intervals along the circumferential direction. Each tooth and each cutter slot are disposed along the axial direction of the die wheel 18. The tooth shape of each tooth is adapted to the shape of each straw body in the straw material 31, so that each straw body can be clamped on the tooth at the corresponding position. The connecting portion of the straw material 31 is located at the position of the cutter groove, and the cutter 11 is inserted into the cutter groove to cut off the connecting portion at the corresponding position. The straw material 31 is tightly attached to the die wheel 18 after passing through the transition guide wheel 17, and the straw material 31 is firmly pressed on the die wheel 18 by the rolling pinch roller assembly 14 above the cutter 11. The arc-shaped guard plate 20 is used for protecting a single straw or a plurality of straws cut from the straw material 31 by the cutter 11 below the cutter 11. In this embodiment, the die wheel 18 rotates one straw every time the material control servo motor 26 outputs an angle of 10 °, so that the cutter 11 cuts off a single straw every time. The number of straws to be cut each time is controlled by setting different rotation angles of the die wheel 18, for example, if the cutter 11 is required to complete cutting of 5 straws each time, the output angle of the material control servo motor 26 is modified to be 50 ° each time. When cutting, the cutter 11 is driven by the cutter cylinder 24 to cut off the straw material 31.

3 die wheel grooves are uniformly distributed on the outer circumferential surface of the die wheel 18 along the axial direction, and each die wheel groove circumferentially surrounds the die wheel 18 for one circle. The die wheel 18 rotates and simultaneously utilizes the stripping teeth on the forced stripping plate 10 to discharge the cut single straw or multiple straws. The front ends of the 3 stripping teeth on the forced stripping plate 10 respectively extend into the middle outer diameters of the 3 die wheel grooves, and the middle ends and the rear ends of the 3 stripping teeth are positioned outside the die wheel 18 and fixed on the forced stripping plate 10. The die wheel 18 rotates to drive the suction pipe, and the suction pipe is forcedly peeled off from the die wheel 18 by the stripping teeth after passing through the stripping teeth.

When the die wheel 18 rotates, the suction pipe material 31 is driven, and the suction pipe material 31 drives the tensioning wheel 13 and the tensioning wheel sliding block seat 28 to move upwards. When the tensioning wheel sliding block seat 28 moves to be close to the material control upper photoelectric device 29, the material control upper photoelectric device 29 triggers the work, and the discharging motor 27 is started to drive the whole roll of suction pipe material 31 to be output outwards. In the output process, the tensioning wheel 13 can be driven by a mechanical arm to move downwards, so that the suction pipe material 31 is tensioned gradually, and the discharging motor 27 stops working until the tensioning wheel sliding block seat 28 is close to the material control lower photoelectric device 30. The material control servo motor 26 operates to drive the die wheel 18 to rotate.

Claims (3)

1. The automatic straw cutting, material controlling and spitting mechanism is suitable for single or multiple straws, a plastic sealing bag wrapped with a single straw body is defined as a single straw, at least two connected plastic sealing bags wrapped with a straw body are defined as multiple straws, the automatic straw cutting, material controlling and spitting mechanism comprises an inflatable shaft, straw materials are wound on the inflatable shaft, and a discharging driving mechanism drives the inflatable shaft to rotate so as to realize outward conveying of the straw materials, and the automatic straw cutting, material controlling and spitting mechanism is characterized in that the straw materials led out from the inflatable shaft pass through a transition guide wheel group I and a movable tensioning wheel and then are clamped on the outer circumferential surface of a die wheel through a guide transition mechanism, the tensioning state of the straw materials is adjusted through the position movement of the tensioning wheel, the tensioning wheel moves between a stop feeding position and a feeding position, and the tensioning wheel is indicated to move to the feeding position through a material controlling upper photoelectric device; the tensioning wheel is instructed to move to the stop feeding position through a photoelectric device under the control of feeding; the tensioning wheel is arranged on the tensioning wheel sliding block seat, when the tensioning wheel sliding block seat moves to be close to the photoelectric device on the material control, the photoelectric device on the material control triggers the work, the discharging motor is started to drive the whole suction pipe material to be output outwards, and in the output process, the tensioning wheel is driven by the manipulator to move downwards so as to tension the suction pipe material gradually until the tensioning wheel sliding block seat is close to the photoelectric device under the material control, the discharging motor stops working, and the material control servo motor drives the die wheel to rotate; the guide transition mechanism comprises a guide transition plate, a transition guide wheel set II and a rolling pinch roller set, a pinch roller belt of the rolling pinch roller assembly is pressed to a die wheel, the die wheel drives the rolling pinch roller assembly to roll, the straw material out of the transition guide wheel set I is sent into the guide transition plate, and the guide transition plate limits the straw material to be horizontally and forwards conveyed to the transition guide wheel set II; the second transition guide wheel set is matched with the die wheel, and the straw material which is guided out of the transition plate winds around the outer circumferential surface of the die wheel after passing through the second transition guide wheel set; when the die wheel rotates, the straw material wound on the outer circumferential surface of the die wheel is brought to the position of the cutter after passing through the gap between the rolling pressing wheel set and the die wheel, and the rolling pressing wheel set is pressed against the straw material by controlling the gap between the rolling pressing wheel set and the die wheel, so that the straw material is clamped on the outer circumferential surface of the die wheel; after the die wheel driving mechanism drives the die wheel and straw materials on the die wheel to rotate for a certain angle alpha each time, cutting off the plastic sealing bags wrapped with single straw bodies or at least two connected plastic sealing bags respectively wrapped with one straw body from the straw materials through a cutter; after the die wheel rotates, the cut single straw or multiple straws on the die wheel fall off from the die wheel through the forced stripping mechanism, so that the single straw or multiple straws are discharged;

k die wheel grooves are uniformly distributed on the outer circumferential surface of the die wheel along the axial direction, wherein K is more than or equal to 1, and each die wheel groove circumferentially surrounds the die wheel;

the forced stripping mechanism comprises a forced stripping plate, the side edge of the forced stripping plate is arranged on a wallboard, K stripping teeth are fixed on the installation plane of the forced stripping plate, the front ends of the K stripping teeth respectively extend into K die wheel grooves, and when the die wheel rotates, the front ends of the stripping teeth are utilized to strip the single straw or the plurality of straws from the die wheel;

the automatic cutting machine comprises a die wheel, a cutting knife, a die wheel, a forced stripping mechanism, a cutting knife, a die wheel, a rolling pressing wheel assembly, a die wheel, a cutting knife, a material discharging mechanism and an arc-shaped guard plate.

2. The automatic straw cutting, controlling and discharging mechanism according to claim 1, wherein when the tensioning wheel is positioned at a stop feeding position, the discharging driving mechanism stops working, the straw material is fully tensioned on the transition guide wheel set I and the tensioning wheel, and the die wheel driving mechanism drives the die wheel, so that the die wheel synchronously drives the tensioning wheel to move towards feeding through the straw material;

when the tensioning wheel is positioned at the material feeding position, the die wheel driving mechanism stops working, the discharging driving mechanism drives the air expansion shaft to rotate and then outwards convey the straw material, and meanwhile, the tensioning wheel synchronously moves towards the material feeding stopping position until the tensioning wheel moves to the material feeding stopping position, and the discharging driving mechanism stops working.

3. The automatic straw cutting, controlling and ejecting mechanism according to claim 1, wherein the outer circumferential surface of the die wheel is provided with N teeth and N cutter grooves, the N teeth and the N cutter grooves are uniformly distributed along the circumferential direction of the outer circumferential surface of the die wheel at intervals, and each tooth and each cutter groove are arranged along the axial direction of the die wheel;

the tooth shape of each tooth is matched with the shape of each straw body in the straw material, so that each straw body can be clamped on the tooth at the corresponding position; the connecting part in the straw material is positioned at the position of the cutter groove, and the cutter extends into the cutter groove so as to cut off the connecting part at the corresponding position;

when the discharging of a single straw is required to be completed, the angle alpha of each rotation of the die wheel is 360/N degrees;

when the discharging of a plurality of straws is required to be completed, the discharging of M straws is required to be completed, and M is more than or equal to 2, and then the angle alpha of each rotation of the die wheel is M× (360/N) degrees.

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