CN217349639U - Unpowered conveying device - Google Patents

Abstract

The utility model discloses an unpowered conveyor relates to transportation equipment technical field. The unpowered conveying device comprises a rack, a turnover assembly, a first conveying piece and a second conveying piece. The turnover assembly is arranged at one end of the machine frame. The first transmission piece is arranged on the rack and is arranged in a manner of inclining downwards in the direction approaching the overturning assembly. The second transmission piece is arranged on the rack, the second transmission piece is positioned below the first transmission piece, and the second transmission piece is arranged in a mode of inclining downwards in the direction departing from the overturning assembly. The overturning assembly is provided with a receiving position and a returning position, the overturning assembly is butted with the first transmission piece when being positioned at the receiving position, and the overturning assembly is butted with the second transmission piece when being positioned at the returning position. The unpowered conveying device can improve the working efficiency and reduce the working difficulty.

Description

Unpowered conveying device

Technical Field

The utility model relates to a transportation equipment technical field especially relates to an unpowered conveyor.

Background

At present, when an operator assembles the cylinder and the flange in the assembling process of the gearbox, the operator needs to walk back and forth to take materials due to a certain interval between the upper working procedure station and the lower working procedure station, the labor intensity is high, the operator still needs to bend down during operation, and the operation difficulty is high. Meanwhile, the materials are often damaged when being taken, placed and transported, so that the quality of the product is reduced. In addition, in the production line, a power device cannot be adopted due to high requirements on space layout, energy and environment.

Therefore, there is a need for an unpowered conveyor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an unpowered conveyor can improve work efficiency and reduce the work degree of difficulty.

For realizing the above technical effect, the technical scheme of the utility model as follows:

an unpowered conveyor device comprising: a frame; the overturning assembly is arranged at one end of the rack; the first transmission piece is arranged on the rack and is arranged in a downward inclination mode in the direction close to the overturning assembly; the second transmission piece is arranged on the rack, is positioned below the first transmission piece and is arranged in a manner of inclining downwards in the direction departing from the overturning assembly; wherein: the overturning assembly is provided with a receiving position and a returning position, the overturning assembly is in butt joint with the first transmission piece when located at the receiving position, and the overturning assembly is in butt joint with the second transmission piece when located at the returning position.

Further, the unpowered conveying device also comprises a plurality of feeding pieces, and the feeding pieces are selectively arranged on the first conveying piece and/or the second conveying piece.

Further, the unpowered conveying device further comprises a stopping assembly, the stopping assembly can be arranged on the rack in a resetting mode, and the stopping assembly is used for stopping the plurality of feeding pieces located on the first conveying piece from moving towards the overturning assembly.

Furthermore, two ends of the feeding piece are respectively provided with a stopping groove, the stopping assembly is provided with a plurality of stopping ends, and the stopping ends can extend into the stopping grooves to stop the feeding piece.

Further, the stop assembly includes: a tread member; one end of the stop piece is rotatably connected with the stepping piece, and the other end of the stop piece is provided with a plurality of stop ends; the reset piece, the one end of the piece that resets with the stop part is connected, the other end with the frame is connected, the piece that resets is configured to drive the stop part motion so that a plurality of backstop end stretches into the backstop recess.

Further, the turnover component can be reset on the rack.

Further, unpowered conveyor still includes the weight, the one end of weight connect in the upset subassembly, the other end is walked around the frame is equipped with counter weight portion, counter weight portion can drive the upset subassembly by loopback the position orientation the receiving position motion.

Furthermore, the first transmission piece comprises a plurality of first transmission strips, the first transmission strips extend along a first direction, and a plurality of first transmission wheels are arranged on the first transmission strips respectively.

Furthermore, the unpowered conveying device further comprises two limiting parts, the two limiting parts are arranged on the rack at intervals, and the two limiting parts are respectively used for limiting the overturning assembly located at the receiving position and the overturning assembly located at the loopback position.

Furthermore, the inclination angle of the first transmission piece is 10-15 degrees, and the inclination angle of the second transmission piece is 10-15 degrees.

The beneficial effects of the utility model are that:

when the materials are placed on the first conveying piece at the other end of the rack, which is not provided with the turnover component, the first conveying piece is arranged in a downward inclination manner in the direction close to the turnover component, so that the materials can move downwards along the length direction of the first conveying piece towards the turnover component, and the turnover component is positioned at the receiving position, so that the materials can move to the turnover component, the unpowered transportation of the materials is realized, the operation of taking and placing the moving materials by operators is avoided, and only the simple unloading and loading operation is carried out at the turnover component, so that the labor intensity of the operators is greatly reduced, and the output difficulty of the materials is reduced; after operating personnel operated the material on the upset subassembly, the upset subassembly can be switched to returning the position back, and operating personnel can place the material that needs to retrieve or other frocks on the upset subassembly this moment, because the second transmission piece downward sloping setting in the direction that deviates from the upset subassembly for retrieve material and other frocks can move to the other end of frame under its self action of gravity, realized unpowered automatic recovery effect.

The unpowered conveying device has the advantages that the unpowered conveying device is simple in structure and small in occupied area, and the transportation is realized only by the gravity of the material, so that no power source is needed, the unpowered conveying device is easy to control and operate, the energy use cost can be reduced, the failure rate can be reduced, and the unpowered conveying device is suitable for various use environments; and the unpowered conveying device is convenient and quick to operate, time-saving and labor-saving in the using process, and can obviously improve the working efficiency and reduce the working difficulty.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of an unpowered conveyor according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

FIG. 3 is a schematic view of a portion of an unpowered transport device according to an embodiment of the present invention;

fig. 4 is a second partial schematic structural view of the unpowered transport device according to the embodiment of the present invention.

Reference numerals

1. A frame; 2. turning over the assembly; 21. turning over the strips; 22. a turnover wheel; 3. a first transmission member; 31. a first transport bar; 32. a first transfer wheel; 4. a second transport member; 41. a second transport bar; 42. a second transfer wheel; 5. a counterweight; 51. a counterweight connecting member; 52. a counterweight portion; 6. a feeding member; 61. a stopper groove; 7. a stop assembly; 71. a stop end; 72. a stepping member; 73. a stopper; 74. a reset member; 8. a limiting member; 100. and (3) feeding.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The specific structure of the unpowered conveyor device according to the embodiment of the present invention is described below with reference to fig. 1 to 4.

As shown in fig. 1-4, fig. 1 discloses an unpowered conveyor comprising a frame 1, a turnover assembly 2, a first conveyor 3 and a second conveyor 4. The turnover component 2 is arranged at one end of the machine frame 1. The first transmission member 3 is provided on the frame 1, and the first transmission member 3 is provided to be inclined downward in a direction approaching the flipping unit 2. The second transmission piece 4 is arranged on the machine frame 1, the second transmission piece 4 is positioned below the first transmission piece 3, and the second transmission piece 4 is arranged in a downward inclined mode in the direction departing from the overturning assembly 2. The turnover assembly 2 has a receiving position and a returning position, the turnover assembly 2 is in butt joint with the first transmission member 3 when located at the receiving position, and the turnover assembly 2 is in butt joint with the second transmission member 4 when located at the returning position.

It can be understood that, when the material 100 is placed on the first transmission member 3 at the other end of the rack 1 where the turnover component 2 is not arranged, the first transmission member 3 is arranged to be inclined downwards in the direction close to the turnover component 2, so that the material 100 can move downwards along the length direction of the first transmission member 3 towards the turnover component 2, and the turnover component 2 is located at the receiving position, so that the material 100 can move to the turnover component 2, thereby realizing the unpowered transportation of the material 100, avoiding the taking and placing of the moving material 100 by an operator, and only needing to perform simple unloading and loading operation at the turnover component 2, thereby greatly reducing the labor intensity of the operator and reducing the difficulty in outputting the material 100; after operating personnel operated material 100 on to upset subassembly 2, upset subassembly 2 can be switched to returning the position, and operating personnel can place material 100 or other frocks that need retrieve on upset subassembly 2 this moment, because second transmission part 4 downward sloping setting in the direction that deviates from upset subassembly 2 for retrieve material 100 and other frocks and can move to the other end of frame 1 under its self action of gravity, realized unpowered automatic recovery effect.

The unpowered conveying device according to the embodiment is simple in structure and small in occupied area, and the conveying is realized only by the gravity of the material 100, so that a power source is not needed, the control operation is easy, the energy use cost can be reduced, the failure rate can be reduced, and the unpowered conveying device is suitable for various use environments; and the unpowered conveying device is convenient and quick to operate, time-saving and labor-saving in the using process, and can obviously improve the working efficiency and reduce the working difficulty.

In some embodiments, as shown in fig. 1-4, the unpowered conveying device further comprises a plurality of feeders 6, and the plurality of feeders 6 are selectively arranged on the first conveying member 3 and/or the second conveying member 4.

It can be understood that the material feeding part 6 can support and protect the material 100, so as to further ensure that the material 100 is not easy to damage in the transportation process and improve the processing yield of the material 100. Specifically, after the feeding piece 6 is moved to the overturning assembly 2 by the first transmission piece 3, an operator can directly take away the material 100 on the feeding piece 6, the overturning assembly 2 is switched to the returning position, and the feeding piece 6 can move to the other end of the rack 1 along the second transmission piece 4 under the action of the gravity of the feeding piece 6, so that the operator can recycle the feeding pieces 6.

In some embodiments, as shown in fig. 1 and 4, the unpowered conveyor device further comprises a stopping assembly 7, the stopping assembly 7 is resettable on the frame 1, and the stopping assembly 7 is used for stopping the plurality of feeders 6 on the first conveyor 3 from moving towards the reversing assembly 2.

It can be understood that, because the operator needs time to take and put the material 100 on the turnover assembly 2, and the operation time of different operators is different, when the material 100 is stored on the turnover assembly 2, the possibility that the material 100 moves onto the turnover assembly 2 along the first conveying member 3 still may occur. Additionally be provided with backstop subassembly 7 in this embodiment, backstop subassembly 7 can play the backstop effect to the material 100 towards upset subassembly 2 to ensure that operating personnel can not have pay-off 6 to transport to upset subassembly 2 when the operation, effectively avoided the accident problem that pay-off 6 continuously transported and lead to, thereby further improved unpowered conveyor's safety in utilization and transportation reliability.

In some embodiments, as shown in fig. 1 and 4, the two ends of the feeding member 6 are respectively opened with a stopping groove 61, and the stopping assembly 7 has a plurality of stopping ends 71, and the stopping ends 71 can extend into the stopping grooves 61 to stop the feeding member 6.

It can be understood that the stop end 71 extends into the stop groove 61, so that the stop end 71 has a limiting effect on the feeding piece 6, the stop effect of the stop component 7 on the movement of the feeding piece 6 can be realized, and the use safety and the transportation reliability of the unpowered conveying device are ensured.

In some embodiments, as shown in fig. 1 and 4, the stop assembly 7 includes a step 72, a stop 73, and a return 74. One end of the stopper 73 is rotatably connected to the step member 72, and the other end is provided with a plurality of stopper ends 71. The reset member 74 has one end connected to the stopper member 73 and the other end connected to the frame 1, and the reset member 74 is configured to move the stopper member 73 such that the plurality of stopper ends 71 protrude into the stopper grooves 61.

It can be understood that the stepping member 72 facilitates the stopping and releasing of the stopping assembly 7 by stepping by the operator, thereby improving the convenience of operation. The reset member 74 can better ensure that the stopper 73 is kept in the state of the stopper feeding member 6, thereby further ensuring the use safety of the stopper assembly 7.

In particular, the return member 74 may be provided as a spring or a tension spring.

In some embodiments, the flipping assembly 2 is repositionably disposed on the frame 1.

It can be understood that, because the turnover component 2 is resettably arranged on the frame 1, after the material 100 on the first transmission part 3 enters the turnover component 2, the turnover component 2 is switched from the receiving position to the returning position, and after the material 100 is transported to the second transmission part 4 by the turnover component 2, the turnover component 2 can be automatically reset from the returning position to the receiving position, so that the automatic resetting effect of the turnover component 2 is better realized, and the control is not needed by manual intervention or through a control mechanism.

In some embodiments, the unpowered conveyor further comprises a counterweight 5, one end of the counterweight 5 being connected to the tipping assembly 2 and the other end being passed around the machine frame 1 and being provided with a counterweight 52, the counterweight 52 being capable of moving the tipping assembly 2 from the return position towards the receiving position.

It will be appreciated that the return of the flip assembly 2 from the return position to the receiving position is preferably achieved by the above-described construction.

Specifically, when the material 100 is located on the turnover device 2, the total gravity of the material 100 and the turnover device 2 is greater than the gravity of the weight portion 52, and at this time, the turnover device 2 is turned to the receiving position, and when the material 100 is transported to or taken away from the second transport member 4 from the turnover device 2, the gravity of the turnover device 2 is less than the gravity of the weight portion 52, so that the turnover device 2 can be reset to the receiving position.

Of course, in other embodiments of the present invention, the reset of the turnover component 2 can also be realized by an elastic member such as a spring, and the specific reset structure thereof does not need to be specifically limited.

Specifically, as shown in fig. 3, the weight member 5 further includes a weight connecting member 51, and both ends of the weight connecting member 51 are connected to the flipping module 2 and the weight portion 52, respectively.

In some embodiments, as shown in fig. 2, the first transmission member 3 includes a plurality of first transmission bars 31, the plurality of first transmission bars 31 are disposed to extend along a first direction, and a plurality of first transmission wheels 32 are disposed on the plurality of first transmission bars 31, respectively.

It can be understood that the plurality of first conveying strips 31 can ensure that the width positions of the materials 100 are all reliably supported, thereby improving the transportation reliability of the materials 100. The plurality of first transfer wheels 32 can effectively reduce the friction force of the materials 100 when the materials 100 run on the first transfer member 3, so as to ensure that the materials 100 can move along the length direction of the first transfer member 3 under the action of the self gravity.

Specifically, the first conveying strips 31 are provided with two strips, so that consumables can be reduced on the premise of ensuring reliable transportation of the materials 100.

In some specific embodiments, as shown in fig. 2, the second transmission member 4 includes a plurality of second transmission bars 41, the plurality of second transmission bars 41 are all disposed to extend along the second direction, and a plurality of second transmission wheels 42 are respectively disposed on the plurality of second transmission bars 41.

It can be understood that the plurality of second conveying bars 41 can ensure that the width positions of the materials 100 are all reliably supported, thereby improving the transportation reliability of the materials 100. The second conveying wheels 42 can effectively reduce the friction force of the material 100 when the material 100 runs on the second conveying member 4, so that the material 100 can move along the length direction of the second conveying member 4 under the action of the gravity of the material 100.

Specifically, the number of the second conveying strips 41 is two, so that consumables can be reduced on the premise that reliable transportation of the material 100 is guaranteed.

In some specific embodiments, as shown in fig. 3, the flipping module 2 comprises a plurality of flipping strips 21, the flipping strips 21 are disposed to extend along the second direction, and a plurality of flipping wheels 22 are disposed on the flipping strips 21.

It will be appreciated that the plurality of turndown strips 21 ensure that the width position of the material 100 is reliably supported, thereby improving the transportation reliability of the material 100. The plurality of turnover wheels 22 can effectively reduce the friction of the materials 100 when the materials 100 run on the turnover assembly 2, so as to ensure that the materials 100 can move along the length direction of the turnover assembly 2 under the action of the self gravity.

Specifically, the number of the turning strips 21 is two, which can reduce the consumption of the material on the premise of ensuring reliable transportation of the material 100.

In some embodiments, as shown in fig. 3, the unpowered conveying device further includes two limiting members 8, the two limiting members 8 are disposed on the frame 1 at intervals, and the two limiting members 8 are respectively used for limiting the turning assembly 2 located at the receiving position and the turning assembly 2 located at the returning position.

It can be understood that the limiting member 8 can play a limiting effect on the receiving position and the returning position of the turnover assembly 2, so as to prevent the turnover assembly 2 from being separated from the receiving position or the returning position and causing the problem that the turnover assembly cannot be accurately butted with the first transmission member 3 or the second transmission member 4, thereby ensuring the butting reliability of the first transmission member 3, the second transmission member 4 and the turnover assembly 2, and further improving the use reliability of the unpowered conveying device.

In some embodiments, the angle of inclination of the first transfer member 3 is 10 ° to 15 °, and the angle of inclination of the second transfer member 4 is 10 ° to 15 °.

It can be understood that, by the above-mentioned inclination angle setting, the conveying speed and the conveying stability of the workpieces on the first conveying member 3 and the second conveying member 4 can be ensured at the same time, so that the conveying efficiency of the workpieces and the conveying quality of the workpieces are further ensured at the same time.

Specifically, the inclination angle of the first transfer member 3 and the second transfer member 4 is preferably 10 °.

The embodiment is as follows:

an unpowered conveyor device according to an embodiment of the invention is described below with reference to fig. 1-4.

The unpowered conveying device of the embodiment comprises a frame 1, a turnover assembly 2, a first conveying member 3, a second conveying member 4, a plurality of feeding members 6, a stopping assembly 7, a counterweight member 5 and two limiting members 8.

The turnover component 2 is arranged at one end of the machine frame 1. The first transmission member 3 is provided on the frame 1, and the first transmission member 3 is provided to be inclined downward in a direction approaching the flipping unit 2. The second transmission piece 4 is arranged on the machine frame 1, the second transmission piece 4 is positioned below the first transmission piece 3, and the second transmission piece 4 is arranged in a downward inclined mode in the direction departing from the overturning assembly 2. The turnover assembly 2 has a receiving position and a returning position, the turnover assembly 2 is in butt joint with the first transmission member 3 when located at the receiving position, and the turnover assembly 2 is in butt joint with the second transmission member 4 when located at the returning position. The turnover assembly 2 is resettable on the frame 1.

A plurality of feeders 6 are optionally provided on the first conveyor 3 and/or the second conveyor 4. The first transmission member 3 includes a plurality of first transmission strips 31, the plurality of first transmission strips 31 extend along a first direction, and a plurality of first transmission wheels 32 are respectively disposed on the plurality of first transmission strips 31.

The stopping component 7 is resettable on the frame 1, and the stopping component 7 is used for stopping the plurality of feeding members 6 on the first conveying member 3 from moving towards the turnover component 2. Backstop recess 61 has been seted up respectively at the both ends of pay-off piece 6, and backstop subassembly 7 has a plurality of backstop ends 71, and backstop end 71 can stretch into in backstop recess 61 with backstop pay-off piece 6. The stopper assembly 7 includes a step member 72, a stopper member 73, and a returning member 74. One end of the stopper 73 is rotatably connected to the step member 72, and the other end is provided with a plurality of stopper ends 71. The reset member 74 has one end connected to the stopper member 73 and the other end connected to the frame 1, and the reset member 74 is configured to move the stopper member 73 such that the plurality of stopper ends 71 protrude into the stopper grooves 61.

One end of the counterweight 5 is connected to the turnover assembly 2, the other end of the counterweight bypasses the rack 1 and is provided with a counterweight part 52, and the counterweight part 52 can drive the turnover assembly 2 to move from the returning position to the receiving position.

Two locating parts 8 intervals set up in frame 1, and two locating parts 8 are used for spacing upset subassembly 2 that is located the receiving position respectively and are located the upset subassembly 2 that loops back the position.

In the description herein, references to the description of "some embodiments," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. An unpowered conveyor device, comprising:

a frame (1);

the overturning component (2) is arranged at one end of the rack (1);

the first transmission piece (3), the first transmission piece (3) is arranged on the rack (1), and the first transmission piece (3) is arranged in a downward inclination manner in the direction approaching the overturning assembly (2);

the second transmission piece (4), the second transmission piece (4) is arranged on the rack (1), the second transmission piece (4) is positioned below the first transmission piece (3), and the second transmission piece (4) is arranged in a manner of inclining downwards in the direction departing from the overturning assembly (2); wherein:

the turnover component (2) is provided with a receiving position and a returning position, the turnover component (2) is butted with the first transmission member (3) when located at the receiving position, and the turnover component (2) is butted with the second transmission member (4) when located at the returning position.

2. The unpowered conveyor device according to claim 1, characterized in that it further comprises a plurality of feeders (6), the plurality of feeders (6) being selectively arranged on the first conveyor (3) and/or the second conveyor (4).

3. The unpowered conveyor device according to claim 2, characterized in that it further comprises a stop assembly (7), said stop assembly (7) being resettable on said frame (1), said stop assembly (7) being adapted to stop a plurality of said feeders (6) on said first conveyor (3) from moving towards said reversing assembly (2).

4. The unpowered conveying device according to claim 3, wherein the two ends of the feeding member (6) are respectively provided with a stopping groove (61), the stopping assembly (7) is provided with a plurality of stopping ends (71), and the stopping ends (71) can extend into the stopping grooves (61) to stop the feeding member (6).

5. The unpowered conveyor device according to claim 4, characterized in that the stop assembly (7) comprises:

a treading member (72);

a stopper (73), one end of the stopper (73) is rotatably connected with the stepping piece (72), and the other end is provided with a plurality of stopping ends (71);

the reset piece (74), one end of reset piece (74) with stop piece (73) is connected, the other end with frame (1) is connected, reset piece (74) are configured to drive stop piece (73) motion so that a plurality of stop end (71) stretch into stop recess (61).

6. The unpowered conveyor device according to claim 1, characterized in that the tipping assembly (2) is resettable on the frame (1).

7. The unpowered conveyor device according to claim 6, characterized in that it further comprises a counterweight (5), one end of the counterweight (5) being connected to the tipping assembly (2) and the other end bypassing the machine frame (1) and being provided with a counterweight (52), the counterweight (52) being able to move the tipping assembly (2) from the return position towards the receiving position.

8. The unpowered conveyor device according to claim 1, wherein the first conveying member (3) includes a plurality of first conveying strips (31), each of the plurality of first conveying strips (31) extends along a first direction, and a plurality of first conveying wheels (32) are respectively disposed on the plurality of first conveying strips (31).

9. The device according to claim 1, characterized in that it further comprises two limiting members (8), two limiting members (8) are disposed on the frame (1) at intervals, and two limiting members (8) are respectively used for limiting the turning assembly (2) located at the receiving position and the turning assembly (2) located at the returning position.

10. The unpowered conveyor device according to claim 1, wherein the angle of inclination of the first conveying member (3) is 10 ° to 15 ° and the angle of inclination of the second conveying member (4) is 10 ° to 15 °.

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