Scraper device and its application in filter rod forming machine

Abstract

This utility model relates to the technical field of cigarette production equipment, and discloses a scraper device and its application in a filter rod forming machine. The scraper device is used to prevent filter material bundles from getting caught in the fabric roller. The scraper device includes a main body, in which an air inlet channel and an air blowing channel are provided. One end of the air inlet channel is connected to an external air source, and the other end is connected to the air blowing channel. The end of the air blowing channel away from the air inlet channel forms an air blowing hole on the surface of the main body. The scraper device is internally improved so that after the forming paper breaks, the external air source is activated and pumps in airflow. The airflow passes through the air inlet channel and the air blowing channel inside the scraper device and is blown out through the air blowing hole, blowing the filter material bundles away from the fabric roller to prevent the bundles from getting caught in the gaps of the fabric roller, reducing the investment cost of subsequent maintenance and cleaning, and improving the efficiency of equipment use.

Description

Technical Field

[0001] This utility model relates to the technical field of cigarette production equipment, specifically to a scraper device and its application in a filter rod forming machine. Background Technology

[0002] In the cigarette production process, the filter rod forming machine is a key piece of equipment used to wrap filter material tows (such as cellulose acetate tows, polypropylene tows, etc.) with forming paper and roll them into filter strips, which are then cut into individual filter rods. Its working principle is as follows: the filter material tows are conveyed forward under the traction of a belt, while the forming paper wraps the tows under the drive of the belt, forming continuous filter strips. The filter strips are then conveyed to a cutting device for slitting, ultimately forming filter rods that meet specifications.

[0003] However, in actual production, problems such as paper breakage (e.g., failure to splice new and old paper rolls, uneven tension, or material defects) can prevent the filter media filaments from being properly wrapped. In this case, since the belt is still running, the unwrapped filter media filaments will continue to be pulled and may get caught in the gaps between the belt rollers.

[0004] Once filter media filaments get tangled in the conveyor belt rollers, they not only clog the conveyor belt channel but may also become entangled in other transmission components, forcing the equipment to stop. Furthermore, if the high-speed conveyor belt rollers are entangled in filaments, it can cause bearing wear, transmission misalignment, or even mechanical jamming, affecting the equipment's operational accuracy. Cleaning requires disassembling relevant components to remove the entangled filaments, which is time-consuming, increases maintenance costs, and severely impacts production efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that filter material filaments are easily entangled in the fabric roller after the forming paper breaks. This invention provides a scraper device that can blow the filter material filaments away from the fabric roller after the forming paper breaks, thus preventing the filter material filaments from being entangled in the fabric roller.

[0006] To achieve the above objectives, the first aspect of this utility model provides a scraper device for preventing filter material filaments from getting caught in the cloth belt roller. The scraper device includes a main body, in which an air inlet channel and an air blowing channel are provided. One end of the air inlet channel is connected to an external air source and the other end is connected to the air blowing channel. The end of the air blowing channel away from the air inlet channel forms an air blowing hole on the surface of the main body.

[0007] In some embodiments, the air inlet includes a plurality of first air inlets, which are oriented parallel to each other and are located in the same plane.

[0008] In some embodiments, the air inlet further includes a plurality of second air inlets, the second air inlets being oriented parallel to each other and in the same plane, and the orientations of the first air inlet and the second air inlets being staggered.

[0009] The second aspect of this utility model provides a filter rod forming machine, including a smoke gun base plate, a cloth roller, and a scraper device as described above. The main body of the scraper device is fixedly connected to the smoke gun base plate. The installation positions of the main body, the smoke gun base plate, and the cloth roller are configured such that the airflow blown out of the air hole can at least blow the filter material filaments away from the cloth roller along the radial direction of the cloth roller.

[0010] In some embodiments, when the air blowing hole includes a first air blowing hole and a second air blowing hole, the mounting positions of the main body, the base plate of the smoke gun, and the fabric roller are configured such that the airflow blown out of the first air blowing hole can at least blow the filter material filaments away from the fabric roller along the radial direction of the fabric roller, and the airflow blown out of the second air blowing hole can blow the filter material filaments away from the fabric roller along the axial direction of the fabric roller.

[0011] There is an angle α between the orientation of the first air blowing hole and the radial direction of the fabric roller, and the orientation of the first air blowing hole along the axial direction of the fabric roller is consistent with the orientation of the second air blowing hole.

[0012] In some embodiments, the first air holes are distributed along the axial direction of the fabric roller, and the sum of the air blowing ranges of all the first air holes covers at least the axial range of the fabric roller.

[0013] In some embodiments, the filter rod forming machine further includes fasteners, and a strip groove is provided through the main body. The fasteners are inserted into the strip groove and fixedly connected to the bottom plate of the smoke gun.

[0014] In some embodiments, the strip grooves are provided in two or more parallel lines.

[0015] In some embodiments, two or more fasteners are inserted into each slot, and the fasteners are distributed along the length of the slot.

[0016] In some embodiments, the length direction of the strip groove is perpendicular to the axial direction of the fabric roller.

[0017] The scraper device using the above-described technical solution of this utility model has the following effects:

[0018] The internal design of the scraper device is improved so that after the forming paper breaks, the external air source is activated and the airflow is pumped in. The airflow passes through the air inlet channel and air blowing channel inside the main body of the scraper device and is blown out through the air blowing hole, blowing the filter material filaments away from the cloth belt roller to prevent the filaments from getting into the gap of the cloth belt roller, reducing the investment cost of subsequent maintenance and cleaning, and improving the efficiency of equipment use.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a scraper device according to one embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram of the scraper device from another perspective;

[0022] Figure 3 This is a top view sectional view of the scraper device according to one embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram showing the installation positions of the scraper device, the base plate of the smoke gun, and the cloth roller according to one embodiment of this utility model.

[0024] Figure 5 yes Figure 4 Structural diagram omitting fasteners;

[0025] Figure 6 This is a schematic diagram showing the installation positions of the scraper device, the base plate of the smoke gun, and the cloth roller in the second embodiment of this utility model.

[0026] Figure 7 This is a schematic diagram showing the installation positions of the scraper device, the base plate of the smoke gun, and the cloth roller in the third embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] 100. Base plate of the smoking gun; 101. Connecting hole; 200. Fabric roller; 300. Main body; 301. Air inlet channel; 302. Air blowing channel; 303. Air blowing hole; 304. First air blowing hole; 305. Second air blowing hole; 306. Strip groove; 400. Fastener; a. Angle between the orientation of the first air blowing hole and the radial direction of the fabric roller. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0030] In existing cigarette packaging machines, the scraper device inside the cigarette gun is mainly used to clean residual tobacco and tobacco dust. Specifically, during the cigarette conveying or forming process, tobacco or tobacco dust may adhere to the inner wall of the cigarette gun, the surface of the channel, or the fabric roller 200. The blades or edges of the scraper device then contact the inner wall of the cigarette gun, the surface of the channel, or the fabric roller 200 and scrape the tobacco and tobacco dust.

[0031] In this utility model, a first aspect provides a doctor blade device, which improves upon existing doctor blade devices to prevent filter material filaments from getting caught in the fabric roller 200 after the forming paper breaks. Specifically, in conjunction with the attached... Figure 1 Appendix Figure 2 and appendix Figure 3As shown, the scraper device includes a main body 300, in which an air inlet channel 301 and an air blowing channel 302 are provided. One end of the air inlet channel 301 is connected to an external air source, and the other end is connected to the air blowing channel 302. The end of the air blowing channel 302 away from the air inlet channel 301 forms an air blowing hole 303 on the surface of the main body 300. Airflow is pumped into the air inlet channel 301 through the external air source. The airflow passes through the air inlet channel 301 and the air blowing channel 302 and is finally ejected outward from the air blowing hole 303, blowing the filter media filaments away from the belt roller 200, thereby preventing the filter media filaments from getting caught in the belt roller 200, reducing the investment cost of subsequent maintenance and cleaning, and improving the efficiency of equipment use.

[0032] The main body 300 is made of 1Cr18Ni9Ti material, which is high in strength, wear-resistant, not easily deformed, and not easily rusted.

[0033] In addition, this scraper device can be used in conjunction with an electronic control system to improve the level of automation. When the forming paper breaks, airflow is pumped into the air inlet channel 301 through an external air source, and finally blown out through the air blowing hole 303, thereby blowing the filter material bundle away from the cloth roller 200. When the forming paper is not broken and the machine is operating normally, the external air source is not activated, and no airflow is blown out of the air blowing hole 303, which will not affect the normal operation of the cigarette machine.

[0034] In some preferred embodiments, the air blowing hole 303 includes a plurality of first air blowing holes 304, which are parallel in orientation and located on the same plane. In this embodiment, the first air blowing holes 304 are formed at the edges of the main body 300. The arrangement of a plurality of first air blowing holes 304 can expand the airflow blowing range, thereby ensuring the blowing effect of the filter material filaments.

[0035] In some preferred embodiments, the air blowing hole 303 further includes a plurality of second air blowing holes 305, the second air blowing holes 305 being parallel in orientation and located in the same plane, and the orientations of the first air blowing hole 304 and the second air blowing holes 305 being staggered. The staggered orientations of the first air blowing hole 304 and the second air blowing hole 305 can generate two airflows with different directions. When blowing away the filter media filaments, the filter media filaments can be blown away from the fabric roller 200 from two directions, further ensuring that the filter media filaments are not entangled in the fabric roller 200.

[0036] The second aspect of this utility model provides a filter rod forming machine, combined with the attached... Figure 4 As shown, the device includes a filter gun base plate 100, a filter cloth roller 200, and a scraper device as described in any of the above embodiments. The main body 300 of the scraper device is fixedly connected to the filter gun base plate 100. The mounting positions of the main body 300, the filter gun base plate 100, and the filter cloth roller 200 are configured such that the airflow from the air outlet 303 can at least blow the filter material filaments away from the filter cloth roller 200 radially. (See attached...) Figure 4In the diagram, the black arrows indicate the direction of movement of the filter media bundle, and the axis of the belt roller 200 is horizontal. The air outlets 303 eject air upwards, blowing the filter media bundle upwards away from the belt roller 200. It is important to note that while the filter media bundle moves along the circumferential tangent of the belt roller 200 under its traction, the airflow from the air outlets 303 must at least blow the filter media bundle radially away from the belt roller 200 to ensure effective blowing.

[0037] In some embodiments, when the air outlet 303 includes a first air outlet 304 and a second air outlet 305, the mounting positions of the main body 300, the base plate 100 of the cigarette gun, and the fabric roller 200 are configured such that the airflow from the first air outlet 304 can at least blow the filter material bundle away from the fabric roller 200 radially, and the airflow from the second air outlet 305 can blow the filter material bundle away from the fabric roller 200 axially. Through the cooperation of the first air outlet 304 and the second air outlet 305, the filter material bundle is blown away from the fabric roller 200 both axially and radially, which not only further improves the blowing effect of the filter material bundle, but also avoids the obstruction of the cigarette gun base plate 100 from the blowing of the filter material bundle by blowing in two directions.

[0038] Specifically, in conjunction with the appendix Figure 3 As shown, the orientation of the first air hole 304 is at an angle α with the radial direction of the fabric roller 200, and the orientation of the first air hole 304 along the axial direction of the fabric roller 200 is consistent with the orientation of the second air hole 305. Specifically, the orientation of the second air hole 305 is consistent with the axial direction of the fabric roller 200, and the orientation of the second air hole 305 is from top to bottom. Therefore, after the scraper device is installed on the base plate 100 of the cigarette gun, the axial direction of the fabric roller 200 is in the attached... Figure 3 The direction of the belt roller 200 is reflected in the vertical direction, while the radial direction of the belt roller 200 is reflected in the horizontal direction. Figure 3 The orientation of the first air hole 304 is oriented at an angle α with the left-right direction, and the first air hole 304 is tilted downwards so that the orientation of the first air hole 304 along the axial direction of the belt roller 200 is consistent with the orientation of the second air hole 305. Therefore, the airflow ejected from the first air hole 304 can not only blow the filter material bundles away radially along the belt roller 200, but also blow the filter material bundles away axially along the belt roller 200.

[0039] It should be noted that the radial blowing direction along the belt roller 200 is the main blowing direction for the air blowing holes 303 to blow away the filter material filaments, while the axial blowing direction along the belt roller 200 is the auxiliary blowing direction. Therefore, the radial blowing effect of the air blowing holes 303 along the belt roller 200 needs to be much greater than the axial blowing effect. Specifically, this is reflected in the fact that the number of first air blowing holes 304 is much greater than the number of second air blowing holes 305, and the included angle α is 2°. In this embodiment, seventeen first air blowing holes 304 and two second air blowing holes 305 are provided.

[0040] In some preferred embodiments, the first air-blowing holes 304 are distributed along the axial direction of the fabric roller 200, and the sum of the air-blowing ranges of all the first air-blowing holes 304 at least covers the axial range of the fabric roller 200. This arrangement ensures that the first air-blowing holes 304 can completely blow away the filter material filaments along the axial range of the fabric roller 200, thus guaranteeing the blowing effect.

[0041] In some preferred embodiments, combined with appendix Figure 4 and attached Figure 5 As shown, the filter rod forming machine also includes a fastener 400. A strip groove 306 is formed through the main body 300, and the fastener 400 passes through the strip groove 306 and is fixedly connected to the base plate 100 of the smoke gun. Specifically, the fastener 400 is a bolt. A connecting hole 101 for threaded engagement with the bolt is formed on the base plate 100 of the smoke gun. The bolt passes through the strip groove 306 and is then threaded into the connecting hole 101. Tightening the bolt completes the fixation of the main body 300. The installation is convenient and quick, and the strip groove 306 has low requirements for installation accuracy.

[0042] In addition, the groove 306 allows for adjustment of the mounting position of the main body 300. Specifically, after loosening the fastener 400, the main body 300 is moved along the length of the groove 306, and the relative position between the main body 300 and the base plate 100 of the smoke gun is adjusted within the length of the groove 306. After the position is adjusted, the fastener 400 is tightened again.

[0043] In some preferred embodiments, combined with appendix Figure 6 As shown, the strip groove 306 has two or more parallel sections, and the presence of two or more strip grooves prevents the main body 300 from rotating during position adjustment.

[0044] In some preferred embodiments, combined with appendix Figure 7 As shown, each strip groove 306 is provided with two or more fasteners 400. The fasteners 400 are distributed along the length of the strip groove 306, which further improves the connection strength between the main body 300 and the base plate 100 of the smoke gun, and can also prevent the main body 300 from rotating during the position adjustment process.

[0045] In some preferred embodiments, the length direction of the strip groove 306 is perpendicular to the axial direction of the fabric roller 200. This design ensures that the orientation of the first air hole 304 and the second air hole 305 remains unchanged during the position adjustment of the main body 300.

[0046] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0047] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0048] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A doctor blade device for preventing filter material tows from becoming entangled in a tape roller (200), the doctor blade device comprising a main body (300), characterized in that, The main body (300) is provided with an air inlet channel (301) and an air blowing channel (302). One end of the air inlet channel (301) is connected to an external air source and the other end is connected to the air blowing channel (302). The end of the air blowing channel (302) away from the air inlet channel (301) forms an air blowing hole (303) on the surface of the main body (300).

2. The doctoring apparatus of claim 1, wherein, The air inlet (303) includes a plurality of first air inlets (304), which are parallel in orientation and located in the same plane.

3. The doctoring apparatus of claim 2, wherein, The air inlet (303) also includes a plurality of second air inlets (305), the second air inlets (305) are parallel in orientation and are in the same plane, and the orientations of the first air inlet (304) and the second air inlets (305) are staggered.

4. A filter rod maker characterized by The device includes a base plate (100), a fabric roller (200), and a scraper device as described in any one of claims 1 to 3. The main body (300) of the scraper device is fixedly connected to the base plate (100). The mounting positions of the main body (300), the base plate (100), and the fabric roller (200) are configured such that the airflow blown out of the air hole (303) is at least able to blow the filter material filaments away from the fabric roller (200) radially.

5. The filter rod maker of claim 4, wherein When the air blowing hole (303) includes a first air blowing hole (304) and a second air blowing hole (305), the installation positions of the main body (300), the base plate of the cigarette gun (100), and the fabric roller (200) are configured such that: the airflow blown out of the first air blowing hole (304) can at least blow the filter material bundle away from the fabric roller (200) radially, and the airflow blown out of the second air blowing hole (305) can blow the filter material bundle away from the fabric roller (200) axially. Wherein, there is an angle α between the orientation of the first air blowing hole (304) and the radial direction of the fabric roller (200), and the orientation of the first air blowing hole (304) along the axial direction of the fabric roller (200) is consistent with the orientation of the second air blowing hole (305).

6. A rod making machine according to claim 5, characterised in that The first air-blowing holes (304) are distributed along the axial direction of the fabric roller (200), and the sum of the air-blowing ranges of all the first air-blowing holes (304) covers at least the axial range of the fabric roller (200).

7. A rod making machine according to claim 4, characterised in that The filter rod forming machine also includes a fastener (400). A strip groove (306) is provided through the main body (300). The fastener (400) passes through the strip groove (306) and is fixedly connected to the base plate (100) of the smoke gun.

8. A rod making machine according to claim 7, characterised in that The strip groove (306) has two or more parallel ones.

9. The filter rod maker according to claim 7 or 8, characterized in that Two or more fasteners (400) are provided in each of the strip grooves (306), and the fasteners (400) are distributed along the length of the strip groove (306).

10. The filter rod maker of claim 7, wherein The length direction of the strip groove (306) is perpendicular to the axial direction of the fabric roller (200).

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