Dustproof tobacco suction belt tensioning device of PASSIM cigarette making machine

Abstract

The utility model designs a dustproof tobacco suction belt tensioning device of a PASSIM cigarette making machine. A pneumatic part cavity and a dustproof corrugated pipe are arranged, so that a pneumatic part of the tensioning device is isolated from dust removal airflow of an air chamber; and by arranging the sliding guide strip, the tensioning device is reliable in action and convenient to maintain. By means of the design, the phenomena that the tensioning effect of the cut tobacco suction belt is poor and the tensioning action is not smooth due to dust accumulation are reduced, and the reliability of the tensioning process of the cut tobacco suction belt is guaranteed. In the tensioning process of the cut tobacco suction belt of the PASSIM cigarette making machine, the in-place degree of the action of the tensioning air cylinder is ensured, the influence that accumulated dust hinders the movement of the tensioning device is reduced, and the fluency of conversion between the tensioning action and the loosening action is improved.

Description

Technical Field

[0001] This utility model relates to the field of PASSIM cigarette machine suction and forming technology, and more specifically, to a PASSIM cigarette machine dustproof suction ribbon tensioning device. Background Technology

[0002] The air chamber is one of the key components of the tobacco forming section. Its function is to adsorb the tobacco from the tobacco suction channel onto the suction belt, and move with the suction belt at the same speed as the cigarette paper to form a continuous tobacco bundle.

[0003] The air chamber mainly consists of the air chamber body, suction ribbon and its transmission and tensioning mechanism, guide rail, smoke guide trough, and air chamber lifting mechanism.

[0004] In actual production, the air chamber relies on negative pressure airflow to form tobacco bundles in the tobacco guide rail at the bottom of the chamber. Some fine dust particles pass through the small holes in the suction ribbon and enter the interior of the air chamber cavity. Most of the dust particles are sucked away by the high negative pressure airflow, but a lot still accumulates in areas of stable airflow inside the air chamber cavity (including the surfaces and interiors of the components of the suction ribbon tensioning device). This accumulated dust penetrates various parts of the components and is sometimes difficult to clean.

[0005] On the one hand, when too much dust enters the surface of the piston rod of the tensioning cylinder or the clearance between it and the cylinder body, the cylinder will wear and be damaged. On the other hand, when too much dust accumulates at the two linear guide rails, it will hinder the movement of the entire tensioning device, making the slider move poorly on the linear guide rails. This will result in insufficient tension, poor tensioning effect of the suction ribbon, poor tensioning action, and slippage of the suction ribbon, which will have an adverse effect on the suction ribbon forming.

[0006] Therefore, how to provide a PASSIM cigarette machine dustproof suction ribbon tensioning device that prevents smoke accumulation, facilitates cleaning and maintenance, streamlines the tensioning process, and ensures the tensioning effect, so as to achieve accurate and precise suction ribbon tensioning, prevent slippage, and ensure uniform and stable tension force, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a new technical solution for a PASSIM cigarette machine dustproof suction ribbon tensioning device to solve the technical problems mentioned in the background art.

[0008] According to a first aspect of the present invention, a PASSIM dustproof suction belt tensioning device for cigarette making machine is provided, comprising a pneumatic cavity, a tensioning cylinder assembly, a sliding guide assembly, and a tensioning pulley;

[0009] The pneumatic cavity body is fastened on the inner wall of the air chamber body by screws, and a cover plate is reversely connected on the air chamber body to seal the pneumatic cavity body.

[0010] The tension cylinder assembly comprises a cylinder body, a piston rod and a connecting head, the cylinder body is fixed in the cavity of the pneumatic cavity body by a locking nut, one end of the piston rod is connected with the cylinder body in an extending and retracting mode, the other end of the piston rod passes through the pneumatic cavity body and the locking nut and is fastened with the connecting head by threads.

[0011] The sliding guide bar assembly comprises a sliding guide bar and two groups of V-shaped blocks, the V-shaped blocks are fixed on the air chamber body by sleeves, a sliding channel is formed between the two groups of V-shaped blocks, and the sliding guide bar is connected in the sliding channel in a sliding mode, and one end of the sliding guide bar is connected with the connecting head by a pin shaft.

[0012] The tension pulley is connected with the other end of the sliding guide bar, and the tension cylinder assembly can pull the tension pulley through the sliding guide bar assembly to adjust the tension of the suction tape.

[0013] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device further comprises a reversing valve, the reversing valve is used for controlling the inflation and deflation of the cylinder body, and a switch button is further arranged on the reversing valve, a contact corresponding to the switch button is arranged on the cover plate of the air chamber body, when the cover plate is closed, the contact presses the switch button, and automatic tensioning of the tension cylinder assembly is realized; when the cover plate is opened, the contact releases the switch button, and automatic relaxation of the tension cylinder assembly is realized.

[0014] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device further comprises a magnetic induction switch and a switch mounting assembly arranged on the rear side of the cylinder body, the switch mounting assembly is fixed on the cylinder body by screws, one end of the magnetic induction switch is fixed in a mounting hole of the switch mounting assembly, and the other end is connected with a line outside the air chamber body; when the tension cylinder assembly is tensioned to the limit or the suction tape is broken, the magnetic induction switch stops the cigarette making machine.

[0015] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device further comprises a silencer connected with the reversing valve, and the silencer is used for reducing the noise of air intake or exhaust.

[0016] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device, the reversing valve is two position five way reversing valve, the air pipe connected from the cylinder body occupies one hole way, one hole way is blocked by screw plug, two hole ways are occupied by the silencer, the remaining one hole way is connected with the air pipe, and the air pipe is connected to the external air source through the clamping sleeve pipe joint on the air chamber body.

[0017] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device, the sliding guide bar assembly further comprises an axle and an outer check ring, the axle is connected in the hole on the sliding guide bar through screw connection, and the tensioning pulley is rotatably connected to the axle; the outer check ring is installed in the outer check ring groove at the end of the axle, and is used for limiting the tensioning pulley.

[0018] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device, the sliding guide bar is provided with a positioning pin on the side of the pin shaft, and the connecting head is provided with a pin hole matched with the positioning pin.

[0019] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device, the tensioning pulley is composed of a wheel body, an inner check ring and a bearing; the inner check ring is clamped in the inner check ring groove of the shaft hole of the wheel body, the bearing is arranged on the two sides of the inner check ring, and the axle is fixedly connected with the inner ring of the bearing.

[0020] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device, one end of the sliding guide bar close to the tensioning pulley is further provided with a scraper through a screw, and the scraper is used for scraping the residual cut tobacco in the wheel groove of the tensioning pulley.

[0021] Optionally, the PASSIM cigarette making machine dustproof suction tape tensioning device further comprises a corrugated pipe assembly, the corrugated pipe assembly is composed of a corrugated pipe, a rear strap and a front strap; the corrugated pipe is sleeved on the piston rod, the front strap is tightened on the connecting head, and the rear strap is tightened at the locking nut.

[0022] Through the above technical scheme, compared with the prior art, the PASSIM cigarette making machine dustproof suction tape tensioning device has the following beneficial effects:

[0023] 1. The pneumatic part cavity bears the tensioning device pneumatic part, the dustproof corrugated pipe wraps the tensioning cylinder piston rod, and dust accumulation is avoided.

[0024] 2. The sliding guide bar structure is simple, reliable in action and convenient to clean. Even if dust accumulates on the sliding block and the V-shaped block, since the structure is simple and the surfaces are all on the outside, it is also easy to clean.

[0025] 3. Ensure that the tension cylinder action is in place, improve the smooth completion of tension and relaxation action. The cooperation of magnetic induction switch, reversing valve and sliding guide bar makes the tension action guaranteed, and the tension and relaxation can be smoothly converted.

[0026] Other features of the present application and their advantages will become apparent from the following detailed description of exemplary embodiments of the present application, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0028] Figure 1 is the position relation schematic view of the air chamber body, the air chamber cover and the suction tape tensioning device;

[0029] Figure 2 is the assembly relation schematic view of the suction tape tensioning device;

[0030] Figure 3 is the position relation schematic view of the tension cylinder assembly, the bellows assembly and the sliding guide bar assembly;

[0031] Figure 4 is the structure schematic view of the tension cylinder assembly;

[0032] Figure 5 is the structure schematic view of the bellows assembly;

[0033] Figure 6 is the structure schematic view of the sliding guide bar assembly;

[0034] Figure 7 is the structure explosion schematic view of the tension pulley.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1-tension cylinder assembly; 2-pneumatic part cavity body; 3-bellows assembly; 4-sliding guide bar assembly; 5-tension pulley;

[0037] 11-cylinder body; 12-piston rod; 13-contact; 14-reversing valve; 15-magnetic induction switch; 16-switch mounting assembly; 17-connection head; 18-locking nut; 19-switch button;

[0038] 111-silencer; 112-screw plug; 113-clamp sleeve pipe joint;

[0039] 30-bellows; 31-rear tie; 32-front tie;

[0040] 40 - sliding guide bar; 41 - pin shaft; 42 - wheel shaft; 43 - outer retainer ring; 44 - scraper; 45 - V-shaped block; 46 - sleeve; 47 - positioning pin;

[0041] 50 - wheel body; 51 - inner retainer ring groove; 52 - inner retainer ring. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0043] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the present application or its application or uses.

[0044] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0045] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0046] According to Figures 1 to 7 As shown in the drawings, the present application provides a PASSIM cigarette making machine dustproof suction tape tensioning device, which comprises a pneumatic cavity body 2, a tensioning cylinder assembly 1, a sliding guide bar assembly 4, and a tensioning belt wheel 5.

[0047] The pneumatic cavity body 2 is fastened on the inner wall of the air chamber body by screws, and the air chamber body is provided with a flip-connected cover plate to seal the pneumatic cavity body 2. The isolation cavity formed by the pneumatic cavity body 2 avoids the influence of smoke dust in the dust removal airflow on the pneumatic components.

[0048] The tensioning cylinder assembly 1 comprises a cylinder body 11, a piston rod 12, and a connecting head 17. The cylinder body 11 is fixed in the cavity of the pneumatic cavity body 2 by a locking nut 18. One end of the piston rod 12 is connected to the cylinder body 11 in an extendable and retractable manner, and the other end passes through the pneumatic cavity body 2 and the locking nut 18 and is fastened to the connecting head 17 by threads.

[0049] The sliding guide bar assembly 4 comprises a sliding guide bar 40 and two groups of V-shaped blocks 45. The V-shaped blocks 45 are fixed on the air chamber body by sleeves 46. The two groups of V-shaped blocks 45 form a sliding channel in the middle. The sliding guide bar 40 is connected in the sliding channel, and one end thereof is connected to the connecting head 17 by a pin shaft 41.

[0050] The sliding guide bar 40 is clamped between the two V-shaped blocks 45 fixed on the air chamber body through the convex design thereon, and the sliding guide bar 40 slides on the V-shaped blocks 45 while the V-shaped blocks 45 rotate when the sliding guide bar 40 is driven to move by the piston rod 12. Such a structure is very simple, only three components constitute the sliding block mechanism, the action is driven by the piston rod 12, and the two V-shaped blocks 45 also play the roles of supporting and limiting. The sliding guide bar 40 is determined when performing the action under the clamping of the two V-shaped blocks 45 and the driving of the piston rod 12. Even if dust accumulates on the sliding block and the V-shaped blocks 45, it is also easy to clean because the surfaces are all on the outside due to the simple structure.

[0051] The tensioning pulley 5 is connected to the other end of the sliding guide bar 40, and the tensioning cylinder assembly 1 can pull the tensioning pulley 5 through the sliding guide bar assembly 4 to adjust the tensioning degree of the suction belt.

[0052] The utility model discloses utilize the pneumatic part cavity formed by separate isolation, bears tensioning cylinder, reversing valve 14 and so on pneumatic part, make these pneumatic parts no longer directly contact with dust removal airflow, reduce the accumulation of smoke on the component. The isolated pneumatic part cavity does not affect the function of each component.

[0053] Further, the tensioning cylinder assembly 1 further comprises a reversing valve 14, the reversing valve 14 is used for controlling the inflation and deflation of the cylinder body 11, and the reversing valve 14 is further provided with a switch button 19, and the cover plate of the air chamber body is provided with a contact 13 corresponding to the switch button 19, when the cover plate is closed, the contact 13 presses the switch button 19, that is, the automatic tensioning of the tensioning cylinder assembly 1 is realized; when the cover plate is opened, the contact 13 releases the switch button 19, that is, the automatic release of the tensioning cylinder assembly 1 is realized.

[0054] The utility model discloses set up reversing valve 14, when the air chamber cover is turned over, the tensioning cylinder is in the state of not tensioning, at the moment, it is convenient to replace the suction belt, when the air chamber cover is closed, the contact 13 on the air chamber cover makes the working position of the tensioning cylinder change, and the tensioning cylinder is in the state of tensioning, at the moment, the suction belt is pulled tight.

[0055] Further, the rear side of the cylinder body 11 is further provided with a magnetic induction switch 15 and a switch mounting assembly 16; the switch mounting assembly 16 is fixed on the cylinder body 11 through a screw; one end of the magnetic induction switch 15 is fixed in the mounting hole of the switch mounting assembly 16, and the other end is connected to a line outside the air chamber body; when the tensioning cylinder assembly 1 reaches the limit or the suction belt is broken, the magnetic induction switch 15 will stop the cigarette making machine. The magnetic induction switch 15 is arranged at the position of one end of the tensioning cylinder, which is used for detecting whether the tensioning reaches the limit or the suction belt is broken, and an alarm prompt is sent. The cooperation of the magnetic induction switch 15, the reversing valve 14 and the sliding guide bar 40 guarantees the tensioning action, and the tensioning and release can also be smoothly converted. The existing scheme does not have this advantage.

[0056] Further, the reversing valve 14 is also connected with a silencer 111, which is used to reduce the noise of the intake or exhaust. In the tail hole of the cylinder 11, a threaded reducing joint and the silencer 111 are installed, the threaded reducing joint is screwed with the tail hole of the cylinder 11, and the silencer 111 is screwed with the threaded reducing joint. In the head hole of the cylinder 11, a threaded reducing joint and an L-shaped plug-in threaded pipe joint are installed, the threaded reducing joint is screwed with the head hole of the cylinder 11, and the L-shaped plug-in threaded pipe joint is screwed with the threaded reducing joint. The L-shaped plug-in threaded pipe joint is connected with the reversing valve 14 through an air pipe and a plug-in threaded pipe joint, and occupies one of the holes.

[0057] Further, the reversing valve 14 is a two-position five-way reversing valve 14, one of the holes is occupied by an air pipe connected from the cylinder 11, one of the holes is plugged by a screw plug 112, two of the holes are occupied by the silencer 111, and the remaining one hole is connected with an air pipe, which is connected to an external air source through a clamping sleeve pipe joint 113 on the air chamber body.

[0058] In the embodiment, the cylinder 11 and the piston rod 12 are the main components of the tensioning cylinder assembly 1, and bear the function of performing the tensioning action. The reversing valve 14 controls the air path into the inside of the cylinder 11, that is, controls the charging and discharging of the cylinder 11, so as to realize the tensioning and relaxing actions of the tensioning cylinder assembly 1. The switch button 19 on the reversing valve 14 can switch the air path. When the cover plate is closed, the contact 13 on the cover plate presses the switch button 19, that is, the automatic tensioning of the tensioning cylinder assembly 1 is realized; when the cover plate is opened, the contact 13 on the cover plate releases the switch button 19, that is, the automatic relaxing of the tensioning cylinder assembly 1 is realized. The magnetic induction switch 15 is connected with an external circuit, which stops the cigarette making machine when the tensioning cylinder assembly 1 is tensioned to the limit or the suction tape is broken. The silencer 111 is a device for reducing the noise of the intake or exhaust. The air pipe is connected to an external air source through the clamping sleeve pipe joint 113, and the external air source is compressed air after pressure reduction, and the value is best 0.25 Mpa, which can make the suction tape tensioned without slipping and not broken.

[0059] Further, the sliding guide bar assembly 4 also includes an axle 42 and an outer retaining ring 43, the axle 42 is screwed in the hole on the sliding guide bar 40, and the tensioning belt wheel 5 is rotatably connected with the axle 42; the outer retaining ring 43 is installed in the outer retaining ring groove at the end of the axle 42, and is used to limit the tensioning belt wheel 5.

[0060] Further, the sliding guide bar 40 is provided with a positioning pin 47 beside the pin shaft 41, and the connecting head 17 is provided with a pin hole matched with the positioning pin 47, which has a positioning effect.

[0061] Further, the tension pulley 5 is composed of a pulley body 50, an inner retainer 52 and a bearing; the inner retainer 52 is clamped in the inner retainer groove 51 of the shaft hole of the pulley body 50, the bearing is arranged on both sides of the inner retainer 52, the inner ring of the bearing of the tension pulley 5 is matched on the wheel shaft 42 and is limited by the outer retainer 43. If the tension pulley 5 is out of order, the pulley can be taken out by only dismounting the outer retainer 43.

[0062] Further, the sliding guide bar 40 is provided with a scraper 44 at one end close to the tension pulley 5 through a screw, the scraper 44 is used for scraping the residual tobacco in the groove of the tension pulley 5, the gap between the blade of the scraper 44 and the groove of the tension pulley 5 is adjusted to 0.05-0.10mm, so that the tension pulley 5 is kept clean.

[0063] Further, the corrugated pipe assembly 3 is further included, the corrugated pipe assembly 3 is composed of a corrugated pipe 30, a rear strap 31 and a front strap 32; the corrugated pipe 30 is sleeved on the piston rod 12, is tightened on the connecting head 17 by the front strap 32 and is tightened at the lock nut 18 by the rear strap 31. The corrugated pipe 30 can also be automatically folded and stretched along with the extension and contraction of the piston rod 12. The dustproof corrugated pipe 30 is sleeved on the piston rod 12, the lubricating oil on the piston rod 12 is prevented from adhering to the tobacco dust, and the tobacco dust is prevented from being brought into the cylinder 11 in the extension and contraction process of the piston rod 12 to cause the abrasion of the pneumatic part.

[0064] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A dustproof suction belt tensioning device for a PASSIM cigarette making machine, characterized in that, The device comprises a pneumatic cavity, a tension cylinder assembly, a sliding guide bar assembly and a tension pulley. The pneumatic cavity is fastened on the inner wall of the air chamber body by screws, and the air chamber body is provided with a cover plate connected reversely to seal the pneumatic cavity. The tension cylinder assembly comprises a cylinder, a piston rod and a connecting head, the cylinder is fixed in the cavity of the pneumatic cavity by a locking nut, one end of the piston rod is connected with the cylinder in an extendible manner, the other end passes through the pneumatic cavity and the locking nut and is fastened with the connecting head by screw thread. The sliding guide bar assembly comprises a sliding guide bar and two groups of V-shaped blocks, the V-shaped blocks are fixed on the air chamber body by sleeves, a sliding channel is formed between the two groups of V-shaped blocks, and the sliding guide bar is connected in the sliding channel with one end connected with the connecting head by a pin shaft. The tension pulley is connected with the other end of the sliding guide bar, and the tension cylinder assembly can pull the tension pulley through the sliding guide bar assembly to adjust the tension of the tobacco suction belt.

2. The PASSIM cigarette maker dust-free band-tensioning device of claim 1, wherein The tension cylinder assembly further comprises a reversing valve for controlling the inflation and deflation of the cylinder, and the reversing valve is further provided with a switch button, and the cover plate of the air chamber body is provided with a contact corresponding to the switch button, when the cover plate is closed, the contact presses the switch button, and the automatic tensioning of the tension cylinder assembly is realized; when the cover plate is opened, the contact releases the switch button, and the automatic relaxation of the tension cylinder assembly is realized.

3. The PASSIM cigarette maker dust-free band-tensioning device of claim 2, wherein A magnetic induction switch and a switch mounting assembly are further arranged on the rear side of the cylinder, the switch mounting assembly is fixed on the cylinder by screws, one end of the magnetic induction switch is fixed in the mounting hole of the switch mounting assembly, and the other end is connected with a circuit outside the air chamber body; when the tension cylinder assembly reaches the limit or the tobacco suction belt is broken, the magnetic induction switch will stop the cigarette making machine.

4. The PASSIM cigarette maker dust-free band-tensioning device of claim 3, wherein The reversing valve is further connected with a silencer for reducing the noise of air inlet or exhaust.

5. The PASSIM cigarette maker dust-free band-tensioning device of claim 4, wherein The reversing valve is a two-position five-way reversing valve, one hole of the reversing valve is occupied by a gas pipe connected with the cylinder, one hole is blocked by a screw plug, two holes are occupied by the silencer, and the remaining one hole is connected with a gas pipe connected with an external gas source through a clamping sleeve pipe joint on the air chamber body.

6. The PASSIM cigarette maker dust-free band belt tensioning device according to any one of claims 1 to 5, characterized in that, The sliding guide bar assembly further comprises an axle and an outer retainer, the axle is connected in a hole on the sliding guide bar by screw thread, and the tension pulley is rotatably connected with the axle; the outer retainer is installed in an outer retainer groove at the end of the axle to limit the tension pulley.

7. The PASSIM cigarette maker dust-free band-tensioning device of claim 6, wherein A positioning pin is arranged on the side of the pin shaft, and a pin hole is arranged on the connecting head to match the positioning pin.

8. The PASSIM cigarette maker dust-free band-tensioning device of claim 7, wherein The tension pulley comprises a wheel body, an inner retainer and a bearing, the inner retainer is clamped in an inner retainer groove of a shaft hole of the wheel body, the bearing is arranged on both sides of the inner retainer, and the axle is fixedly connected with the inner ring of the bearing.

9. The PASSIM cigarette maker dust-free band-tensioning device of claim 8, wherein A scraper is further arranged on one end of the sliding guide bar close to the tension pulley by screws, and the scraper is used to scrape the residual tobacco in the groove of the tension pulley.

10. The PASSIM cigarette maker dust-free band belt tensioning device according to any one of claims 1 to 5, characterized in that, Also include bellows assembly, the bellows assembly is composed of bellows, rear strap and front strap;The bellows sleeve is set on the piston rod, is tied up on the connector by the front strap, is tied up at the lock nut by the rear strap.

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