CN213737454U

CN213737454U - Pushing device

Info

Publication number: CN213737454U
Application number: CN202022626310.8U
Authority: CN
Inventors: 曹胜; 邓卫平
Original assignee: Chongqing Zhongyuan Huiji Biotechnology Co Ltd
Current assignee: Zhongyuan Huiji Biotechnology Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-20
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a pusher for with the sequencing device on the reaction vessel who glides along the slope slide deliver to next station from sequencing device's play material level one by one, pusher includes propelling movement base, material pushing component and actuating mechanism, material pushing component rotatable or mobilizable setting on the propelling movement base, actuating mechanism is used for driving material pushing component rotatory or reciprocating motion, is provided with on the material pushing component to be used for accepting the smooth reaction vessel's of ejection of compact position location chamber of accepting, when accepting, on accepting the extension line that the location chamber is in the slope slide, material pushing component will accept the reaction vessel who fixes a position the intracavity through removing or rotating and push into next station, accepts the setting of location chamber slope, makes reaction vessel follow ejection of compact position entering and keep the slope gesture when accepting the location chamber. The utility model discloses an among the pusher, owing to accept the setting of location chamber slope for reaction vessel can remain the slope gesture all the time when accepting the location chamber from ejection of compact position entering, and the gesture is stable, has improved the reliability of equipment.

Description

Pushing device

Technical Field

The utility model relates to a medical instrument especially relates to a pusher.

Background

The sequencing device is used for sequencing the articles, the articles are sequentially conveyed to the discharging position through inclining and sliding along the conveying slide way, the articles discharged from the discharging position are conveyed to the next procedure one by the pushing device, and when the pushed articles are reaction containers such as reaction cups shown in figure 1, the opening storehouse is upward in the sliding process of the reaction cups along the conveying slide way.

When the existing pushing device is utilized to push the reaction container, the reaction container is easily clamped on a slide gap or a step between the sequencing device and the pushing device, and the failure rate is high.

Disclosure of Invention

The utility model discloses a main objective provides a pusher to solve reaction vessel and can't be by smooth propelling movement, and the dead problem of easy card, improve equipment reliability.

In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:

a pusher for pushing reaction containers sliding down along an inclined slide on a sequencing device one by one from a discharge position of the sequencing device to a next station, the pusher comprising: the material pushing device comprises a pushing base, a material pushing part and a driving mechanism, wherein the material pushing part is rotatably or movably arranged on the pushing base, the driving mechanism is used for driving the material pushing part to rotate or reciprocate, a receiving and positioning cavity for receiving a reaction container which slides down from a discharging position is arranged on the material pushing part, the receiving and positioning cavity is positioned on an extension line of the inclined slide way during receiving, the material pushing part pushes the reaction container in the receiving and positioning cavity into the next station through movement or rotation, and the receiving and positioning cavity is provided with a notch for the reaction container to slide into from the discharging position; the receiving positioning cavity is obliquely arranged, so that the reaction container keeps an oblique posture when entering the receiving positioning cavity from the material discharging position.

Optionally, the receiving and positioning cavity is provided with an inclined surface for the reaction container to lean on, the inclined surface is perpendicular to the slide way of the sequencing device, and the inclined surface faces the slide way.

Optionally, the pushing member is arranged on the pushing base in a reciprocating manner, a reset detection sensor for detecting whether the pushing member is reset is arranged on the pushing base, a baffle matched with the reset detection sensor is arranged on the pushing member, the surface of the baffle is parallel to the pushing direction of the pushing member, and the reset detection sensor is opposite to the baffle during resetting;

or

But the setting of propelling movement spare reciprocating motion is in on the propelling movement base, be provided with on the propelling movement spare and be used for detecting whether the propelling movement spare resets the detection sensor that resets, be used for be provided with on the propelling movement base with the baffle that pairs of detection sensor that resets uses, the surface of baffle with the propelling movement direction of propelling movement spare is parallel, during the resetting, it is just right to reset the detection sensor the baffle.

Optionally, a mounting cavity is formed in the top of the pushing base, the pushing piece is located in the mounting cavity, and part or all of the receiving and positioning cavity is located in the mounting cavity.

Optionally, but push away the setting of material spare reciprocating motion and be in install the intracavity, accept location chamber bottom and link up, it is in to push away the material spare the limit stroke position in the installation intracavity includes material-bearing level and blanking position, works as it is in when the blanking level, push away the material spare with enclose into the blanking passageway between the propelling movement base, the blanking passageway is used for supplying reaction vessel to follow the blanking position gets into next process.

Optionally, when the pushing member is located at the material dropping position, the material dropping channel is coaxial with the receiving and positioning cavity.

Optionally, the blanking channel is a turning channel for changing an inclined state of the reaction container into a vertical state.

Optionally, the turning channel includes an upper channel, a middle channel and a lower channel, which are sequentially communicated, the lower channel is vertically arranged, the top of the upper channel is provided with a top orifice, and the lower channel is located right below the top orifice.

Optionally, a protrusion is arranged at the bottom of the pushing base, the protrusion extends into a feeding port corresponding to a next process, and the blanking channel penetrates through the protrusion.

Optionally, the stroke position of accepting the positioning chamber is including detecting the position, it is in to detect the position fall the material level with between the material level, it is used for detecting to detect the next door of position accept the positioning chamber in have or not there is reaction vessel's detection sensor.

Optionally, the bottom of sequencing device stretches into in the installation cavity, will the space definition of sequencing device both sides is first space and second space in the installation cavity, the local width in first space is greater than the width in second space, have or not detect the sensor with the position of blanking passageway all with first space corresponds, the cross-sectional profile in second space with the cross-sectional profile matching of pushing away the material piece makes it is in to push away the material piece drive under the guide effect in second space accept the positioning chamber and come and go in hold material level and blanking position, it is rectangular blocky to push away the material piece, the end that pushes away the material piece is in all the time in the first space, accept the positioning chamber and set up and close to the position of the end of pushing away the material piece.

Optionally, be provided with on the pushing away material piece and keep off the charge level, the breach of accepting the location chamber is seted up keep off on the charge level, just keep off the charge level with the incline direction and the inclination degree of accepting the location chamber are unanimous, make the pushing away material piece leaves when holding the material level, the reaction vessel that goes out material level department by it will keep off to keep off the charge level in the slope slide.

Optionally, pusher still including be used for with whether detect sensor installs the installing support in the positioning cavity, the installing support includes interconnect's first mounting panel and second mounting panel, whether detect sensor installs on the first mounting panel, the second mounting panel sets up outside the installing cavity, just the second mounting panel demountable installation be in on the propelling movement base, wherein, first mounting panel slope sets up, makes whether detect sensor aligns accept the positioning cavity.

The utility model discloses a pusher can make during reaction vessel directly slides in accepting the location chamber that the slope set up from the slope slide, then gets into next station along with pushing away the material piece again, and whole in-process, reaction vessel's gesture can not change, has reduced the dead probability of reaction vessel card by a wide margin, has improved the reliability of equipment.

Drawings

FIG. 1 is a schematic view showing the structure of a reaction cup;

fig. 2 is a schematic structural view of the pushing mechanism of the present invention;

FIG. 3 is a schematic diagram of the relative space, position and station of the present invention;

fig. 4 is a schematic structural diagram of the blanking channel.

The description of reference numerals in the examples includes:

the pushing base 1, the mounting cavity 11, the bulge 12, the first space 111 and the second space 112;

the material pushing component 2, the bearing positioning cavity 21, the inclined surface 211 and the material blocking surface 22;

a drive mechanism 3;

a reset detection sensor 41, a shutter 42, and an attachment portion 43;

presence/absence detecting sensor 51, first mounting plate 521, and second mounting plate 522;

the sorting device 6 and the inclined slide 601;

a reaction vessel 7;

a blanking channel 120, a top orifice 121, a lower section channel 122;

the device comprises a discharging position A, a material bearing position B, a detection position C and a blanking position D.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like reference numerals refer to like elements throughout.

Referring to fig. 2 to 4, the pushing device of the present invention is used to send the reaction containers 7 sliding down along the inclined slide 601 on the sequencing device 6 one by one from the discharging position a of the sequencing device 6 to the next station (not shown). In the drawings of the following examples, a reaction vessel is described as a reaction vessel, but in actual practice, the reaction vessel is not limited to the reaction vessel shown in the drawings.

With reference to fig. 2 and 3, the pushing device includes a pushing base 1, a material pushing member 2 disposed on the pushing base 1 and capable of moving back and forth, and a driving mechanism 3 for driving the material pushing member 2 to move back and forth, a receiving and positioning cavity 21 for receiving the reaction container 7 sliding down from the material discharging position a is disposed on the material pushing member 2, when receiving, the receiving and positioning cavity 21 is located on an extension line of the inclined slide 601, the material pushing member 2 pushes the reaction container in the receiving and positioning cavity 21 to a next station through movement, the receiving and positioning cavity 21 has a notch for the reaction container to slide in from the material discharging position a, wherein the receiving and positioning cavity 21 is disposed in an inclined manner, so that the reaction container keeps an inclined posture when entering the receiving and positioning cavity 21 from the material discharging position a.

Specifically, the receiving/positioning chamber 21 has an inclined surface 211 on which the reaction container 7 is placed, the inclined surface 211 is perpendicular to the inclined slide 601 of the sorting device 6, and the inclined surface 211 faces the inclined slide 601. Of course, in the actual implementation process, the receiving and positioning cavity may also adopt other structures to keep the receiving and positioning cavity in an inclined posture, for example, a receiving and positioning frame (not shown) is convexly arranged on the pushing member, and the receiving and positioning frame adopts a frame structure, so that the frame structure can be enclosed into the inclined receiving and positioning cavity.

During operation, the stacked reaction containers 7 firstly slide into the receiving and positioning cavity 21 from the inclined slide 601 of the sequencing device 6 in an inclined posture and lean against the inclined surface 211 of the receiving and positioning cavity in an inclined posture, so that the inclined surface 211 limits the descending positions of the reaction containers, then the pushing part 2 drives the receiving and positioning cavity 21 to move under the driving of the driving mechanism 3, and the cavity wall of the receiving and positioning cavity 21 pushes the reaction containers 7 to move therewith. In the process that the receiving and positioning cavity 21 slides the reaction container to the receiving and positioning cavity 21 from the inclined slide 601 of the sequencing device 6, because the receiving and positioning cavity 21 is arranged in an inclined manner, the posture of the reaction container 7 does not need to be changed in the whole process, and the inclined posture is always kept; when the existing pushing device pushes the reaction container, the reaction container firstly enters the pushing device from the inclined slide way in an inclined posture, the posture of the reaction container is quickly converted into a vertical state from the inclined state, and the pushing device pushes the reaction container.

In the present invention, when the reaction vessel is the reaction cup shown in fig. 1, the inclined surface 211 is tangent to the outer contour of the reaction cup to be pushed.

In fig. 2, the driving mechanism 3 is a linear motor, and in an actual implementation process, a rotating motor may be combined with a linear guide rail, or electromagnets may be disposed on the pushing base 1 and the pushing element 2, and the movement of the pushing element 2 is controlled by utilizing the attraction or repulsion, and in any manner, the pushing element 2 may be driven to perform a reciprocating linear movement. Of course, in the actual implementation process, the pushing element may also push the reaction container in the receiving and positioning cavity to the next station in a rotating manner, as long as the pushing mechanism can apply a pushing force perpendicular to the inclined slide 601 when the receiving and positioning cavity 21 receives the reaction container at the discharging position a.

In fig. 2, a mounting cavity 11 is formed in the top of the pushing base 1, the pushing element 2 is located in the mounting cavity 11, and the receiving and positioning cavity 21 is entirely located in the mounting cavity 11. In the practical implementation process, the bearing and positioning cavity can be partially arranged in the mounting cavity, and even the mounting cavity is not arranged, the pushing piece can be directly and slidably mounted on the pushing base.

In some embodiments, referring to fig. 2, the pushing element 2 is disposed on the pushing base 1 in a reciprocating manner, the pushing base 1 is provided with a reset detection sensor 41 for detecting whether the pushing element 2 is reset, the pushing element 2 is provided with a baffle plate used in cooperation with the reset detection sensor 41, a surface of the baffle plate is parallel to a pushing direction of the pushing element 2, the baffle plate is reset and moves along with the pushing base 1 during resetting, a position of the baffle plate just blocks or reflects a signal emitted by the reset detection sensor 41, the baffle plate leaves the reset sensor 41 along with the pushing base during pushing, the signal emitted by the reset detection sensor is no longer blocked or reflected, and during operation, whether the pushing element 2 is reset is determined according to a signal change of the reset detection sensor. Specifically, the reset detection sensor 41 may be a photoelectric sensor, and at this time, the reset detection sensor 41 is always stationary, and the line of the sensor is also stationary, which is beneficial to more accurate measurement of the stroke. In the practical implementation process, the reset detection sensor can be arranged on the pushing piece, the pushing base is provided with a baffle matched with the reset detection sensor, and at the moment, the circuit of the reset detection sensor moves along with the pushing piece.

Referring to fig. 2, the pushing base 1 is provided with a mounting portion 43, and the mounting portion 43 may be a mounting plate as shown in the figure.

In some embodiments, referring to fig. 2 and 3, the pushing member 2 is reciprocally disposed in the mounting cavity 11, and the bottom of the receiving and positioning cavity is through, the limit travel position of the pushing member 2 in the mounting cavity 11 includes a receiving position B and a blanking position D, when the pushing member 2 is at the blanking position D, a blanking channel 120 is defined between the pushing member 2 and the pushing base 1, and the blanking channel 120 is used for the reaction container 7 to enter the next process from the blanking position D.

Specifically, in some embodiments, the blanking channel 120 is a turning channel for changing the inclined state of the reaction container 7 into a vertical state, and in fig. 3, the turning channel includes an upper channel, a middle channel and a lower channel 122 which are sequentially communicated, the lower channel 122 is vertically arranged, the top of the upper channel has a top orifice 121, and the lower channel 122 is located right below the top orifice 121, so that the reaction container 7 finally enters the next station in the vertical state. In the practical implementation process, if the next process does not require entering in a vertical posture, when the pushing element 2 is at the falling position D, the falling channel 120 and the receiving positioning cavity can also be coaxial, the reaction container 7 passes through the falling channel without changing direction, but the falling channel is not limited to the direction, the whole size of the channel is larger, the occupied space is large, when the reaction cup slides downwards, the reaction cup can slide downwards quickly under the action of self weight, the reaction cup is easy to damage, the falling position of the reaction cup can be changed due to rebound and jumping during falling, the positioning precision is not high enough, and the change channel is adopted as the falling channel, so that the space can be saved, the reaction cup can be prevented from sliding downwards quickly, the reaction cup has the characteristics of slow speed and light collision during sliding, the reaction container is not easy to damage, and the precision position of entering the next station is higher. In some embodiments, referring to fig. 2 to 4 in combination, the bottom of the pushing base 1 is provided with a protrusion 12, the protrusion 12 extends into a material inlet (not shown) corresponding to a next process, the material dropping channel 120 penetrates through the protrusion 12, and the protrusion is provided to facilitate the reaction container to smoothly fall into an inlet of the next process, so as to prevent the reaction cup from being clamped at a joint between the pushing base 1 and the material inlet of the next process due to vibration perpendicular to other axial directions.

In some embodiments, referring to fig. 2 to 4 in combination, the pushing element is a wedge-shaped block, the pushing element 2 is provided with a blocking surface 22, the notch of the receiving and positioning cavity 21 is formed in the blocking surface 22, and the blocking surface 22 and the receiving and positioning cavity 21 (i.e., the inclined surface 211) have the same inclination direction and inclination degree, so that when the pushing element leaves the receiving position B, the reaction vessel at the discharging position a is blocked in the inclined slide way by the blocking surface 22, and thus, the reaction vessel at the receiving position B or the reaction vessel at the discharging position a can always keep an inclined state.

In some embodiments, referring to fig. 2 and 3, the stroke position of the receiving and positioning chamber 21 includes a detection position C between the falling position D and the receiving position B, and a detection sensor 51 for detecting the presence or absence of the reaction container 7 in the receiving and positioning chamber 21 is disposed beside the detection position D. Referring to fig. 2 to 4, the presence or absence detection sensor 51 partially extends into the installation cavity 11 and avoids the pushing path of the pushing member 2, and the presence or absence detection sensor 51 may be a reflective sensor.

The conventional sensor that detects whether has all directly sets up in blanking position department, and whether unable accurate detection reaction cup has the blanking, and here will have sensor that detects to set up between blanking position C and holding material position B, during the propelling movement, can accurately judge that the propelling movement in-process exists the reaction cup and fail to get into smoothly and accept the condition in location chamber, during reseing, also can accurately detect whether there is the condition that the blanking of reaction cup can not be smooth, detect more accurately.

In some embodiments, referring to fig. 2 and 3 in combination, the bottom end of the sorting device 6 extends into the mounting cavity 11, the space on both sides of the sorting device 6 in the mounting cavity 11 is defined as a first space 111 and a second space 112, the local width of the first space 111 is greater than the width of the second space 112, the positions of the detection sensor 51 and the blanking channel 120 correspond to the position of the first space 111, the cross-sectional profile of the second space 112 matches the cross-sectional profile of the pushing element 2, so that the pushing element 2 drives the receiving and positioning cavity 21 to reciprocate between the material receiving position B and the blanking position D under the guiding action of the second space 112, the pushing element 2 is in a long strip block shape, the end of the pushing element 2 is always located in the first space 111, and the receiving and positioning cavity 21 is arranged at a position close to the end of the pushing element 2.

At this moment, the whole pushing piece is mostly located in the second space 112, the guiding effect is better, and more stable pushing of the reaction container is facilitated, and by adopting the structure, the stroke distance between the blanking position D and the material bearing position B can be controlled within a short range, as long as the space provided with the non-detection sensor 51 is arranged between the blanking position D and the material bearing position B, the structure is compact, and the stability of the pushing reaction container can be further improved.

In some embodiments, referring to fig. 2 to 4 in combination, the pushing device further includes a mounting bracket for mounting the presence or absence detection sensor 51 in the mounting cavity, the mounting bracket includes a first mounting plate 521 and a second mounting plate 522 connected to each other, the presence or absence detection sensor 51 is mounted on the first mounting plate 521, the second mounting plate 522 is disposed outside the mounting cavity 11, and the second mounting plate 522 is detachably mounted on the pushing base 1, wherein the first mounting plate 521 is disposed obliquely so that the presence or absence detection sensor 51 is aligned with the receiving positioning cavity 21.

The work flow of the pushing device is as follows:

referring to fig. 2 to 4, during carrying, the carrying positioning cavity 21 of the pushing member 2 is located at a carrying position B, the reaction container 7 slides into the carrying positioning cavity 21 from a discharging position a at the end of the inclined slide 601 of the sorting device 6, then the pushing member 2 drives the carrying positioning cavity 21 to move from the carrying position B to a blanking position D in a loading state under the driving of the driving mechanism 3, the blanking position D forms a blanking channel 120 (specifically, refer to a diversion channel in fig. 3) through which the reaction container can automatically fall under its own weight, the reaction container in the carrying positioning cavity 21 falls from the blanking channel 120 to an inlet of a next process, the reaction container is changed from an inclined posture to a vertical posture, after the reaction container has fallen, the driving mechanism 3 drives the pushing member 2 to move reversely, and the carrying positioning cavity 21 returns to the carrying position B from the blanking position D in an idle state. And the receiving and positioning cavity 21 passes through the detection position C in the process of reciprocating between the material receiving position B and the material falling position D, the presence or absence detection sensor 51 detects whether a reaction container exists in the cavity, and the reset detection sensor 41 also detects whether the material pushing part 2 is reset.

In the utility model, the inclined arrangement of the bearing and positioning cavity ensures that the reaction container is not easy to be blocked when entering the bearing and positioning cavity from the slide way; the pushing device adopting the structure pushes the reaction container in a mode of keeping the inclined posture, and then the reaction container deforms and falls along the slide way, so that the possibility that the reaction container is blocked in the process of changing the inclined posture into the vertical posture is greatly reduced, the equipment is more reliable, and the posture of the reaction container in the pushing process is kept unchanged, so that a more accurate detection result can be obtained.

In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, and/or groups thereof.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A pusher for conveying reaction containers, which slide down along an inclined slide way on a sequencing device, one by one from a discharge position of the sequencing device to a next station, comprising: the material pushing component is rotatably or movably arranged on the pushing base, the driving mechanism is used for driving the material pushing component to rotate or reciprocate, the material pushing component is provided with a bearing and positioning cavity used for bearing the reaction container sliding down at the material discharging position, the bearing and positioning cavity is positioned on an extension line of the inclined slide way during bearing, the material pushing component pushes the reaction container in the bearing and positioning cavity into the next station through movement or rotation, and the bearing and positioning cavity is provided with a notch for the reaction container to slide into from the material discharging position;

the receiving positioning cavity is obliquely arranged, so that the reaction container keeps an oblique posture when entering the receiving positioning cavity from the material discharging position.

2. The pushing device of claim 1, wherein: the bearing and positioning cavity is provided with an inclined plane for the reaction containers to lean against, the inclined plane is perpendicular to the slide way of the sequencing device, and the inclined plane faces the slide way.

3. The pushing device of claim 1, wherein:

the pushing part is arranged on the pushing base in a reciprocating manner, a reset detection sensor for detecting whether the pushing part is reset is arranged on the pushing base, a baffle matched with the reset detection sensor is arranged on the pushing part, the surface of the baffle is parallel to the pushing direction of the pushing part, and the reset detection sensor is opposite to the baffle during resetting;

or

4. The pushing device of claim 1, wherein: the top of the pushing base is provided with a mounting cavity, the pushing piece is located in the mounting cavity, and part or all of the bearing positioning cavity is located in the mounting cavity.

5. The pushing device of claim 4, wherein: but the setting of pushing away material spare reciprocating motion is in the installation intracavity, it link up to accept location chamber bottom, it is in to push away the material spare the limit stroke position in the installation intracavity includes material-bearing level and blanking position, works as it is in to push away the material spare when the blanking level, push away the material spare with enclose into the blanking passageway between the propelling movement base, the blanking passageway is used for supplying reaction vessel to follow the blanking position gets into next process.

6. The pushing device of claim 5, wherein: when the material pushing part is positioned at the material falling position, the material falling channel is coaxial with the bearing positioning cavity.

7. The pushing device of claim 5, wherein: the blanking channel is a turning channel used for converting the inclined state of the reaction container into a vertical state, the turning channel comprises an upper section channel, a middle section channel and a lower section channel which are sequentially communicated, the lower section channel is vertically arranged, the top of the upper section channel is provided with a top orifice, and the lower section channel is positioned right below the top orifice.

8. The pushing device of claim 5, wherein: the bottom of the pushing base is provided with a protrusion, the protrusion extends into a feeding port corresponding to the next procedure, and the blanking channel penetrates through the protrusion.

9. The pushing device of claim 5, wherein: the stroke position of accepting the positioning chamber is including detecting the position, it is in to detect the position fall the material level with between the material-bearing level, the next door that detects the position is provided with and is used for detecting it has reaction vessel's existence detection sensor to accept the positioning chamber in.

10. The pushing device of claim 5, wherein: the material pushing piece is provided with a material blocking surface, a notch for bearing the positioning cavity is arranged on the material blocking surface, the material blocking surface is consistent with the inclination direction and the inclination degree of the bearing positioning cavity, so that the material pushing piece leaves the material bearing position, and a reaction container at the material discharging position is blocked by the material blocking surface in the inclined slide way.