阅读说明：本技术 转杯纺纱机的纺纱单元和纺纱单元的部件 (Spinning unit of rotor spinning machine and component of spinning unit ) 是由 V.库贝斯 J.斯托莱克 M.莱哈克 V.库伯维 于 2020-03-27 设计创作，主要内容包括：本发明涉及一种转杯纺纱机的纺纱单元,包括布置在开松设备(2)的空腔(21)中的开松辊(20),借此开松的纤维的输送通道(22)形成在开松辊(20)的圆周的表面和开松设备(2)的空腔(21)的圆周壁(23)之间,在开松辊(20)的旋转的方向(X)上,纤维纱条入口开口(230)、清洁开口(231)和纤维出口开口(232)通向输送通道(22),清洁开口(231)由通道(24)紧随,用于从输送通道(22)移除杂质,纤维出口开口(232)由纤维出口通道(25)紧随到纺纱转杯的腔室(3)。(The invention relates to a spinning unit of a rotor spinning machine, comprising an opening roller (20) arranged in a cavity (21) of an opening device (2), whereby a conveying channel (22) for opened fibers is formed between the circumferential surface of the opening roller (20) and a circumferential wall (23) of the cavity (21) of the opening device (2), in the direction (X) of rotation of the opening roller (20), a fiber sliver inlet opening (230), a cleaning opening (231) and a fiber outlet opening (232) open into the conveying channel (22), the cleaning opening (231) being followed by a channel (24) for removing impurities from the conveying channel (22), and the fiber outlet opening (232) being followed by a fiber outlet channel (25) to a chamber (3) of a spinning rotor.)

1. Spinning unit of a rotor spinning machine, comprising an opening roller (20) arranged in a cavity (21) of an opening device (2), whereby a channel (22) for the transport of opened fibers is formed between the circumferential surface of the opening roller (20) and the circumferential wall (23) of the cavity (21) of the opening device (2), in the direction (X) of rotation of the opening roller (20) a fiber sliver inlet opening (230), a cleaning opening (231) and a fiber outlet opening (232) opening open into the channel (22), the cleaning opening (231) being connected to a channel (24) for removing impurities from the transport channel (22), the fiber outlet opening (232) being connected to a fiber outlet channel (25) to a chamber (3) of a spinning rotor, characterized in that the circumferential wall (23) of the cavity of the opening device (2) completely surrounds the cavity (21) of the opening device (2), whereby, only in the area of the cleaning opening (231) and/or the outlet opening (232), the circumferential wall (23) is formed by a front wall (60, 70) of a body (6, 7), which body (6, 7) is removably and tightly inserted into a gap (26, 27) in the circumferential wall (23), wherein the front wall (60, 70) of the body (6, 7) is connected at its front and rear ends (600, 601, 700, 701) to adjacent fixing portions (233, 234, 235, 236) of the circumferential wall (23) of the opening device (2).

2. The spinning unit according to claim 1, characterised in that the body (6, 7) has lower and upper surfaces (602, 603, 702, 703) which are aligned with adjacent parts of the spinning unit, whereby the side surfaces (604, 605, 702, 703) of the body (6, 7) are in an area remote from the circumferential wall (23) of the opening device (2), the circumferential wall (23) being in a chord or radial direction with respect to the opening roller (20), the body (6, 7) abutting the adjacent surfaces of the body of the opening device (2) by means of the side surfaces (604, 605, 702, 703).

3. The spinning unit according to claim 2, characterized in that the rear side surface (605, 705) of the body (6, 7) is at a distance from the circumferential wall (23) of the opening device (2), which circumferential wall (23) is deflected from the central part of the body (6, 7) from an initial chord or radial direction to the opening roller 20 to provide a space for accommodating the entire inclined channel (24, 25).

4. The spinning unit according to any one of claims 1 to 3, characterised in that the main body (6, 7) is provided with an abutment edge (61, 71) on its rear side and along its height.

5. The spinning unit according to any one of claims 1 to 4, characterized in that the opening device (2) is assigned at least two bodies (6, 7), the at least two bodies (6, 7) having the same outer dimensions and the same outer shape and having the cleaning or outlet openings (231, 232) of different sizes and/or shapes and/or having the channels (24, 25) of different sizes, shapes, cross-sections, inclinations and/or having different surface finishes and/or being made of different materials.

6. The spinning unit according to any one of claims 1 to 5, characterised in that the main body (6, 7) has an angular length a of the front wall in the range of 15 ° to 80 °.

7. The spinning unit according to any one of claims 1 to 6, characterised in that the main body (6, 7) has a total area of the cleaning or outlet opening in the range 20% to 80% of the total area of the front wall of the main body (6, 7).

8. The spinning unit according to any one of claims 1 to 7, characterised in that the opening (231, 232) of the body (6, 7) has a front edge (2310, 2320), said front edge (2310, 2320) being arranged at the level of the front wall (60, 70) of the body (6, 7) and, at the same time, being located at an angular distance (α) from the front end (600, 700) of the front wall (60, 70) of the body (6, 7)₁、β₁) To (3).

9. The spinning unit according to any one of claims 1 to 7, characterised in that said opening (231, 232) of said body (6, 7) has a front edge (2310, 2320), said front edge (2310, 2320) being arranged at the level of said front wall (60, 70) of said body and, at the same time, at a zero angular distance (α) from said front end (600, 700) of said front wall (60, 70) of said body (6, 7)₁、β₁) At the level of the front end (600, 700) of the front wall (60, 70) of the body (6, 7).

10. The spinning unit according to any one of claims 1 to 7, characterised in that said opening (231, 232) of said body (6, 7) has a front edge (2310, 2320), said front edge (2310, 2320) being spaced from said level of said front wall (60, 70) of said body (6, 7) and, at the same time, from said level of said front end (600, 700) of said front wall (60, 70) of said body (6, 7) and forming a stepped extension of said channel (24, 25).

11. Spinning unit according to any one of claims 1 to 10, characterised in that the main body (6, 7) is formed by a cleaning main body (6).

12. Spinning unit according to any one of claims 1 to 11, characterised in that the body (6, 7) is formed by an output body (7).

13. A component for a spinning unit of a rotor spinning machine according to any one of claims 1 to 12, characterized in that the component is formed by a main body (6, 7), which main body (6, 7) is adapted to be removably and tightly inserted into a gap (26, 27) in the circumferential wall (23), whereby the front wall (60, 70) of the main body (6, 7) at its front and rear ends (600, 601, 700, 701) is adapted to be a continuation of adjacent fixed parts (233, 234, 235, 236) of the circumferential wall (23) of the opening device (2).

14. Component of a spinning unit of a rotor spinning machine according to claim 13, characterised in that it is formed by a cleaning body (6).

15. Component of a spinning unit of a rotor spinning machine according to claim 13, characterised in that it is formed by the output body (7).

Technical Field

The invention relates to a spinning unit of a rotor spinning machine, comprising an opening roller arranged in a cavity of an opening device, whereby a channel for the transport of opened fibers is formed between the circumferential surface of the opening roller and the circumferential wall of the cavity of the opening device, in the direction of rotation of the opening roller, a fiber sliver inlet opening, a cleaning opening and a fiber outlet opening open into the channel, the cleaning opening being connected to the channel for removing impurities from the transport channel, the fiber outlet opening being connected to a chamber of a spinning rotor through a fiber outlet channel.

Furthermore, the invention relates to a component of the spinning unit.

Background

CZ 286088 discloses a spinning unit of a rotor spinning machine, comprising an opening roller arranged in a cavity of a spinning unit body. A transport channel for the opened fibers is formed between the circumferential surface of the opening roller and the inner surface of the cavity of the main body, the opened fibers being opened by the opening roller from the sliver supplied by the sliver feed device, whereby the opened fibers are transported by the opening roller along the impurity removal channel up to the mouth of the feed channel of the spinning rotor. The inner surface of the cavity of the spinning unit main body surrounds the opening roller and forms a conveying channel together with the opening roller. The inner surface of the cavity is in the section from the sliver feeding device up to the rear of the fiber feeding channel into the spinning rotor formed on the front side of a pair of bodies replaceably mounted on the spinning unit body. Likewise, such bodies are known, for example, from CZ UV 5537, CZ UV 5599, CZ299259 and others, in particular in the direction from the sliver feeding apparatus, first a guide body with impurity removal channel and then a separation body located downstream of the guide body with the opened fibers to the feed channel of the spinning rotor.

A disadvantage of these solutions is that the formation of a fibre transfer channel in which the entire respective section of the wall surrounding the opening roller and the corresponding channel are formed in the removable body places high demands on the material. Since the guide edges of the channels are subject to the greatest wear and the other parts of the respective bodies have a longer service life, the replacement of the respective bodies is material-consuming and time-consuming. Also, it is also disadvantageous that it is necessary to change the size and/or shape and/or contour of the respective channel in the respective body, since the size and/or shape and/or contour of the channel is highly dependent on the processed fibre material and its purity when entering the spinning unit. Finally, the replacement of the known spinning unit body requires a relatively large installation space with respect to the size of the spinning unit.

It is therefore an object of the present invention to obviate or at least mitigate the disadvantages of the background art.

Disclosure of Invention

The object of the invention is achieved by a spinning unit of a rotor spinning machine, the principle of which is that the circumferential wall of the cavity of the opening device completely encloses the cavity of the opening device, whereby, only in the region of the cleaning opening and/or the outlet opening, the circumferential wall is formed by a front wall of the main body, which is removably and tightly inserted into a gap in the circumferential wall, wherein the front wall of the main body is connected at its front and rear ends to adjacent fixed parts of the circumferential wall of the opening device.

This solution allows an easy, time-saving and inexpensive replacement of the main body to restore the characteristics of the spinning unit or to adjust or change the characteristics of the spinning unit according to the material processed, its purity, density, the length of the individual fibres, etc.

In order to facilitate replaceability and interchangeability, the body has a lower surface and an upper surface which remain aligned with adjacent parts of the spinning unit, wherein the side surfaces of the body (the adjacent surfaces of the body of the opening device via which the body adjoins) are in the region of a circumferential wall of the opening device, which is located in the chord or radial direction with respect to the opening roller.

In order to form the entire diagonal passage in the body, it is advantageous if the rear lateral surface is spaced from the circumferential wall of the opening device from the original chord or radial direction with respect to the opening roller and branches off from the central part of the body to provide space for the entire diagonal passage.

In order to facilitate the depth positioning of the main body with respect to the other parts of the spinning unit, the main body is provided with an abutment edge along its height on its rear side.

From the point of view of easy access to the mutually interchangeable bodies in the spinning unit, it is advantageous if the opening device is assigned at least two bodies having the same outer dimensions and the same outer shape and having cleaning or outlet openings of different sizes and/or shapes, or two bodies having different sizes, shapes, cross-sections, channel inclinations and/or having different surface finishes and/or being made of different materials.

From a material and production point of view, it is advantageous according to one embodiment that the body has an angular length of the front wall in the range of 15 ° to 80 °.

It is also advantageous from a material and production point of view that the total area size of the cleaning opening or outlet opening of the main body is in the range of 20% to 80% of the total area of the front wall thereof.

According to one embodiment, the opening of the body has a front edge which is arranged at the level of the front side of the body and, at the same time, is located at an angular distance from the front end of the front wall of the body. This is particularly advantageous for treating fibrous materials with a low impurity content.

According to another embodiment, the opening of the main body has a front edge which is arranged at the level of the front end of the front side of the main body and, at the same time, is located at the front end of the front side of the main body at an angular distance of zero from the front end of the front side of the main body, which is particularly advantageous for a more effective removal of impurities from the fibrous material.

According to a further embodiment, the opening of the body has a front edge which is arranged at a horizontal distance from the front wall of the body and at the same time at a horizontal distance from the front end of the front wall of the body the step forming the channel extends. This is particularly advantageous for increased impurity removal from fibrous materials having a high impurity content.

Advantageously, the body is a cleaning body or an output body.

The principle of the components of the spinning unit of a rotor spinning machine in the form of separately supplied components (e.g. spare parts or accessories) lies in the fact that: the member is formed by a body adapted to be removably and tightly inserted into a gap in the circumferential wall, whereby the front wall of the body is adapted at its front and rear ends to engage adjacent fixed portions of the circumferential wall of the opening apparatus. In this case, it is advantageous that the component consists of a cleaning body or an output body.

Drawings

The invention is schematically represented in the drawings, where fig. 1 shows the arrangement of a spinning unit according to one embodiment of the invention, fig. 2 shows the arrangement of a spinning unit according to an embodiment of the invention with the opening roller removed, fig. 3 and 3a show an exploded view of the arrangement of a spinning unit according to one embodiment of the invention; fig. 4 illustrates an example of a cleaning main body according to the present invention; FIG. 5 illustrates an example of an output body according to the present invention; FIG. 6a is a plan view of another embodiment of a body according to the present invention; FIGS. 6b and 6d are plan views of another embodiment of a body according to the present invention; fig. 6c is a plan view of another embodiment of a body according to the present invention.

Detailed Description

The rotor spinning machine comprises at least one row of identical work stations, whereby each work station comprises a spinning unit in which the yarn is formed from a supplied sliver, the yarn being unwound from the spinning unit or from a spinning rotor through an extraction duct 4 and wound onto a bobbin.

The spinning unit comprises a sliver feeding device 1, the sliver feeding device 1 being assigned to an opening device 2 of the fibers. The opening device 2 serves to open the fibers from the sliver and to convey the opened fibers to the chamber 3 of the spinning rotor.

The sliver feeding device 1 comprises a feed roller 10, the feed roller 10 being coupled to a drive and a sliver feed table (also called sliver collector), not shown, assigned to the feed roller 10.

The opening device 2 includes an opening roller 20, and the opening roller 20 is rotatably installed in a cavity 21 formed in a main body of the spinning unit. The cylindrical surface of the opening roller 20 is provided with a not shown working mantle consisting of teeth or needles, by means of which the individual fibers are pulled from the sliver in the area of the sliver feeding device 1 and are transported to the chamber 3 of the spinning rotor through a transport channel 22 formed by the circumferential wall 23 of the opening device 2 around the cylindrical working mantle of the opening roller 20.

The cavity 21 of the opening device 2 can come from the upper side closed by a not shown cover (e.g. by a cover of a spinning unit or a separate cover, etc.).

In the region of the sliver feed device 1, a sliver feed opening 230 into the opening device 2 is formed in the circumferential wall 23 of the opening device 2.

In the direction X downstream of the inlet opening 230, a cleaning opening 231 is formed in the peripheral wall 23 of the opening device 2, which cleaning opening 231 opens into the channel 24 for removing impurities from the conveying channel 22, i.e. impurities released from the fibers by opening by the opening roller 20 and by conveying these fibers through the conveying channel 22 to the chamber 3 of the spinning rotor. The impurity removal channel 24 from the transport channel 22 opens into the vacuum channel 5, the vacuum channel 5 being connected in a known manner to a vacuum source, not shown.

In the direction X downstream of the cleaning opening 231, a fiber outlet opening 232 is formed in the circumferential wall 23 of the opening device 2. The fibre outlet opening 232 opens into the outlet channel 25 of the opened and contaminant-free fibre to the chamber 3 of the spinning rotor.

The circumferential wall 23 of the opening device 2 continues in the downstream direction X of the fiber outlet opening 232 along the opening roller 20 as far as the inlet opening 230 of the sliver. The entire circumference of the opening roller 20 is therefore surrounded by the circumferential wall 23 of the opening device 2 with the respective openings 230, 231, 232.

The cleaning opening 231 together with the impurity removal channel 24 from the conveying channel 22 is formed in a separate cleaning body 6, which separate cleaning body 6 is tightly inserted into the gap 26 in the circumferential wall 23, whereby the front wall 60 of the cleaning body 6 forms part of the circumferential wall 23 of the opening device 2 in this inserted position. At the front end 600 and the rear end 601 of the front wall 60, the circumferential wall 23 smoothly engages adjacent fixing sections 233, 234 of the circumferential wall 23 of the opening device 2. The cleaning body 6 is fixed to the body of the spinning unit, for example, with screws. The lower surface 602 and the upper surface 603 of the cleaning body 6 remain aligned with the adjacent parts of the spinning unit (i.e. the body of the unit and the cover of the opening device 2). The lateral surfaces 604, 605 of the cleaning body 6 (the cleaning body 6 adjoins the adjacent surface of the body of the spinning unit by the lateral surfaces 604, 605) are in a region remote from the circumferential wall 23 of the opening device 2, the circumferential wall 23 being located in a chordwise or radial direction with respect to the opening roller 20, whereby, in fig. 3, the rear lateral surface 605 is at a distance from the circumferential wall 23 of the opening device 2, the circumferential wall 23 being offset from the original chordwise or radial direction with respect to the opening roller 20 away from the central part of the cleaning body 6, so that a space of the desired size and geometry for accommodating the entire inclined impurity removal channel 24 in the cleaning body 6 with the impurity removal channel 24 is formed in the volume of the cleaning body 6. An abutment edge 61 is arranged on the rear side of the cleaning body 6 along the height of the cleaning body 6, the abutment edge 61 determining the extent of insertion of the cleaning body 6 into the gap 26 and thus also the position of the cleaning body 6 and its front wall 60 relative to the rest of the opening device 2. Due to the front wall 60, the rear wall, the lateral surfaces 604, 605 and the lower surface 602 and the upper surface 603 of the cleaning body 6, the cleaning body 6 has precisely the desired shape and dimensions, which allows the cleaning body 6 to be repeatedly removed from the opening device 2 and inserted into the opening device 2. The size and shape of the cleaning opening 231 and the size, shape, cross-section, and inclination of the foreign substance removal passage 24 formed in the cleaning main body 6 are determined by the characteristics of the fibrous material being processed.

Preferably, at least two cleaning bodies 6 are assigned to one spinning unit, whereby the two cleaning bodies 6 have the same outer dimensions and the same outer shape, but differ in the size and/or shape of the cleaning opening 231 and/or the two cleaning bodies 6 differ in the size, cross-section, inclination of the impurity removal channel 24 and/or the two cleaning bodies 6 have different finishes and/or the two cleaning bodies 6 are made of different materials. Since such a cleaning body 6 is relatively small and manufactured with sufficient precision, the cleaning body 6 can also be replaced not only easily with a new, unworn cleaning body with the same cleaning opening 231 and with the same impurity removal channel 24, but also, if desired, with a cleaning body 6 with a different cleaning opening 231 and/or a different impurity removal channel 24 and/or with a cleaning body 6 with a different finish and/or made of a different material. The outer size and shape of the cleaning main body 6 are always the same. These additional cleaning bodies 6 constitute an accessory to the spinning unit for different types of fibrous material to be treated and/or materials with different impurity contents. The circumferential angle α of the front wall 60 of the cleaning main body 6 is in the range from 20 ° to 45 °. The total surface area of the cleaning openings 231 constitutes 20% to 80% of the total area of the front wall 60 of the cleaning main body 6.

As shown in fig. 6a, the front edge 2310 of the cleaning opening 231 is arranged at the level of the front wall 60 of the cleaning body 6 and, at the same time, the front edge 2310 is located at an angular distance α from the front end 600 of the front wall 60 of the cleaning body 6₁To (3).

As shown in fig. 6b, the front edge 2310 of the cleaning opening 231 is arranged at the level of the front wall 60 of the cleaning body 6 and, at the same time, the front edge 2310 is located at the level of the front end 600 of the front wall 60 of the cleaning body 6, so that the angular distance α according to fig. 6b₁Equal to 0 (zero).

As shown in fig. 6c, the front edge 2310 of the cleaning opening 231 is arranged at a distance Z from the level of the front wall 60 of the cleaning body 6 and, at the same time, also at a distance Z from the level of the front end 600 of the front wall 60 of the cleaning body 6, thereby forming a stepped extension of the impurity removal channel 24 here.

In the exemplary embodiment shown, the fibre outlet opening 232 and the outlet channel 25 for the opened, contaminant-free fibres are also provided in the separate outlet body 7, the separate outlet body 7 being inserted tightly into the gap 27 in the circumferential wall 23, whereby the front wall 70 of the outlet body 7 forms, in the inserted position, a part of the circumferential wall 23 of the opening device 2, the front wall 70 being connected smoothly by its ends 700, 701 to adjacent fixing portions 235, 236 of the circumferential wall 23 of the opening device 2. The output body 7 is fixed to the body of the spinning unit, for example with screws. The lower surface 702 and the upper surface 703 of the output body 7 remain aligned with the adjacent parts of the spinning unit (i.e. with the body of the unit and the cover of the opening device 2). The lateral surfaces 704, 705 of the outlet body 7 (the adjacent regions of the outlet body 7 adjoining the body of the spinning unit by the lateral surfaces 704, 705) in the region remote from the circumferential wall 23 of the opening device 2, the circumferential wall 23 is located in chord and radial direction with respect to the opening roller 20, whereby, in fig. 3, the rear lateral surface 705 at a distance from the circumferential wall 23 of the opening device 2 continues in the form of the wall of the oblique fiber outlet channel 25 formed in the volume of the outlet body 7 with the desired size and geometry of the fiber outlet channel 25. The abutment edge 71 is arranged on the rear side of the output body 7 along the height of the output body 7. The abutment edge 71 determines the extent of insertion of the output body 7 into the gap 27 and thus also the position of the output body 7 and its front wall 70 relative to the rest of the opening device 2. Due to the front wall 70, the rear wall, the lateral surfaces 704, 705 and the lower surface 702 and the upper surface of the exporter body 7, the exporter body 7 has exactly the desired shape and size 703, which allows for repeated removal of the exporter body 7 from the opening device 2 and insertion into the opening device 2. The size and shape of the outlet opening 232 and the size, shape, cross-section and inclination of the fibre outlet channel 25 in the output body 7 are determined by the properties of the fibre material being processed.

Preferably, at least two outlet bodies 7 are assigned to one spinning unit, whereby the outlet bodies 7 have the same outer dimensions and the same outer shape, but differ in the size and/or shape of the outlet opening 232 and/or the output bodies 7 differ in the size, shape, cross-section, inclination of the fiber outlet channel 25 and/or the outlet bodies 7 have different finishes and/or are made of different materials. Since this output body 7 is relatively small and manufactured with sufficient accuracy, the output body 7 can also be replaced not only easily with a new, unworn output body 7 with the same outlet opening 232 and the same fibre outlet channel 25, but if desired the output body 7 can also be replaced with an output body 7 with a different outlet opening 232, with an output body 7 with a different fibre outlet channel 25 or with an output body 7 with a different finish or with an output body 7 made of a different material. The outer dimensions and shape of the output body 7 are always the same. These additional output bodies 7 then constitute the accessories of the spinning unit for the different types of fibrous material to be treated. The angular length β of the front wall 70 of the output body 7 is in the range from 15 ° to 30 °. The total surface area of the outlet openings 232 constitutes 20% to 80% of the total area of the front wall 70 of the output body 7.

In the embodiment shown, the front edge 2320 of the outlet opening 232 is arranged at the level of the front wall 70 of the output body 7, and at the same time the front edge 2320 is located at an angular distance β 1 from the front end 700 of the front wall 70 of the output body 7.

In an embodiment (not shown), the front edge 2320 of the outlet opening 232 is arranged at the level of the front wall 70 of the output body 7 and, at the same time, the front edge 2320 is located at the level of the front end 700 of the front wall 70 of the output body 7 such that the angular distance β 1 is equal to 0 (zero).

In another embodiment (not shown), the front edge 2320 of the outlet opening 232 is arranged at a distance from the level of the front wall 70 of the output body 7 and at the same time at a distance from the front end 700 of the front wall 70 of the output body 7, so that a stepped extension of the fiber outlet channel 25 is formed.

In an exemplary embodiment (not shown), the spinning unit is provided with only the exchangeable cleaning body 6 according to the invention, and the fibre outlet opening 232 and the fibre outlet channel 25 are solved in a different way and by other means. In another embodiment (not shown), the spinning unit is provided with only a replaceable output body 7 according to the invention, and the cleaning opening 231 and the impurity removal channel 24 are solved in a different way and by other means.

List of reference numerals

1 sliver feeding device

10 sliver feed roller

2 opening device

20 opening roller

21 cavity

22 conveying channel

23 circumferential wall

230 sliver entry opening

231 cleaning opening

2310 cleaning the front edge of the opening

Outlet opening of 232 fiber

2320 front edge of output body

233 fixed part of circumferential wall

234 circumferential wall fixing part

235 fixed part of circumferential wall

236 fixed part of circumferential wall

24 impurity removal channel

25 sliver outlet opening

26 gap in circumferential wall

27 gap in circumferential wall

3 Chamber of spinning rotor

5 vacuum channel

6 cleaning main body

60 cleaning the front wall of the main body

600 cleaning front end of front wall of main body

601 rear end of front wall of cleaning main body

602 cleaning the lower surface of the main body

603 cleaning the upper surface of the main body

604 cleaning the lateral surfaces of the main body

605 cleaning lateral surfaces of the main body

61 cleaning the adjoining edges of the main body

7 output body

70 front wall of output body

700 front end of front wall of output body

Rear end of front wall of 701 output body

702 lower surface of output body

703 upper surface of the output body

704 lateral surface of the output body

705 lateral surface of the output body

71 abutting edge

Angle of circumference of front wall of alpha cleaning main body

α₁Angular distance of front edge of cleaning opening at front end of front edge of cleaning main body

Circumferential angle of front wall of beta output body

β₁Angular distance of front edge of outlet opening of front end of front wall of output body

Direction of rotation of the X opening roller

Z horizontal distance of front edge of cleaning opening from front wall of cleaning main body