A clamping device and material conveying equipment

Abstract

The present invention provides a clamping device and material conveying equipment, which relates to the technical field of conveying equipment, and solves the technical problem that each station needs to be equipped with a clamping mechanism during multi-station clamping. The device includes a bracket with an inclined top surface and a plurality of slots in place along the inclined direction, a material blocking mechanism arranged on the bracket close to the slots, and a material return assembly arranged on the bracket in a liftable manner. The top surface of the bracket is inclined and a plurality of slots in place are arranged along the inclined direction to form a step-shaped support structure; the material blocking mechanism arranged on the bracket close to the slots can open the plurality of slots in place from bottom to top in sequence in a linked manner and form a blocking limit for the material in the opened slots, thereby realizing automatic progressive feeding by utilizing the material's own gravity. A set of clamping devices realizes multi-station clamping, has few components, a relatively simple control system, certain station expansibility, and greatly improves the efficiency of material placement.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a clamping device and a material conveying equipment. Background Art

[0002] The general process of material conveying operation is as follows:

[0003] Screening → Posture correction → Transportation → In-place clamping → Operation → Recycling.

[0004] Among them, the in-place clamping process usually involves a mechanism composed of a manipulator or pneumatic components to perform the in-place clamping action. In the case of multi-station clamping, a set of clamping mechanisms is required for each station, resulting in many mechanical mechanism components and a complex control system.

[0005] In the screening process, the vibration disk and vibration guide rail are often used to separate and adjust the posture of materials. The design, manufacture, and debugging of the track of the vibration disk all require a lot of time, and different materials require a new design of the track of the vibration disk. The noise and vibration generated during the operation of the vibration device will affect the on-site environment. At the same time, the materials are constantly in contact and friction in the tray. The higher the vibration frequency, the greater the friction between the materials. Moreover, the vibration disk uses low-frequency vibration to cooperate with the designed track to adjust the materials into the required posture. When the materials in the tray are not sent into the track for a long time, they will pile up together and generate friction with each other. The longer the residence time, the more serious the friction, and it is easy to cause collision damage. Summary of the Invention

[0006] The purpose of the present invention is to provide a clamping device and a material conveying equipment provided with the same, so as to solve the technical problem that a set of clamping mechanisms is required for each station in multi-station clamping in the prior art. The preferred technical solutions provided by the present invention can produce many technical effects as described below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A clamping device provided by the present invention includes:

[0009] A bracket, the top surface of which is inclined and provided with a plurality of in-place grooves along the inclined direction to form a stepped support structure;

[0010] A material blocking mechanism, which is arranged on the bracket near the in-place groove; the material blocking mechanism can sequentially open a plurality of the in-place grooves from bottom to top in a linkage manner under the action of materials and form a blocking limit for the materials in the opened in-place grooves;

[0011] The material return assembly is escalably arranged on the support, and includes an initial station and an ejection station. When the material return assembly rises to the ejection station, the material in the slot can be pushed away from the clamping device.

[0012] Optionally, the material blocking mechanism includes a plurality of material blocking units that are sequentially connected in transmission, each of the material blocking units is correspondingly installed at one of the positioning slots, and the plurality of material blocking units constitute a multi-hinge linkage mechanism; the material blocking unit includes a blocking bar, a limit pin and a connecting rod, the blocking bar and the connecting rod can be rotatably connected to the side wall of the bracket, and two adjacent blocking parts can be linked by the connecting rod located therebetween; the limit pin can limit the rotation angle of the blocking bar.

[0013] Optionally, the connecting rod is V-shaped.

[0014] Optionally, the baffle includes a blocking portion, the baffle has a waiting state and a blocking state, the blocking portion and the inclined surface of the bracket form an angle α, in the waiting state α = 60°, in the blocking state the baffle is limited by the limiting pin and α = 90°.

[0015] Optionally, the bracket includes a base and two side panels located on both sides of the base, forming a structure with a U-shaped cross section; the positioning groove is opened on the inclined top surface of the side panel, and the material removal component can be lifted and lowered in the cavity surrounded by the base and the two side panels.

[0016] The present invention provides a material conveying device, comprising any of the above-mentioned clamping devices.

[0017] Optionally, the material conveying equipment further comprises a clamping device which is escalably mounted above the clamping device, and a buckling groove which matches the positioning groove is provided on the bottom side of the clamping device; when the clamping device is buckled with the clamping device, the positioning groove and the buckling groove can cooperate to clamp the material.

[0018] Optionally, the material conveying equipment further comprises a screening device, and the screening device is located upstream of the clamping device.

[0019] Optionally, the screening device comprises a silo and at least one screening component, the bottom surface of the silo is formed with a slope inclined from its feeding side to its discharging side, the screening component can be lifted and lowered on the discharging side of the silo, and the bottom of the slope is connected to the adjacent screening component.

[0020] Optionally, the top surfaces of all the screening components are guide slopes, and the guide slopes are inclined from the feeding side of the screening component to the discharging side thereof.

[0021] Optionally, the number of the screening components is multiple, and the multiple screening components are connected in sequence to form a stepped screening structure.

[0022] Optionally, the material conveying device further includes a transfer device, and the screening device is connected to the clamping device through the transfer device.

[0023] Optionally, the transfer device includes a conveyor belt, the feeding side of the conveyor belt is arranged at the discharging side of the last-stage screening component, and the discharging side of the conveyor belt is arranged at the feeding side of the clamping device.

[0024] Optionally, a material pushing component is arranged at the discharging side of the conveyor belt for pushing the material to the clamping device.

[0025] Optionally, the material conveying device further includes a moving component, and the number of the clamping devices is two sets. The two sets of clamping devices are arranged side by side on the moving component; the moving component can reciprocate along the conveying direction of the conveyor belt, so that the material pushing component can optionally be aligned with the feeding port of any one of the clamping devices.

[0026] Optionally, a reverse part removing component is arranged at the feeding side of the conveyor belt. The reverse part removing component includes a controller, a sensor and a material pushing mechanism. The sensor senses the form of the material and feeds it back to the controller which is signal-connected to it. After analyzing the data, if there is a reverse part, the controller controls the material pushing mechanism which is signal-connected to it to push the material back to the material bin.

[0027] A clamping device provided by the present invention, the top surface of the bracket is inclined and a plurality of in-place grooves are formed along the inclined direction to form a stepped supporting structure; the material blocking mechanism arranged on the bracket near the in-place grooves can sequentially open a plurality of in-place grooves from bottom to top in a linkage manner and form a blocking limit for the material in the opened in-place grooves, so as to realize automatic progressive feeding by using the self-gravity of the material. One set of clamping device realizes multi-station clamping, has a certain expandability of stations, and greatly improves the in-place efficiency of the material; the present invention realizes multi-station clamping without configuring multiple sets of clamping mechanisms, has few components, and both the mechanical structure and the control system are simple.

[0028] A material conveying device configured with the above clamping device, because the in-place clamping device adopts an inclined stepped supporting structure and a linkage type material blocking mechanism, realizes automatic progressive feeding by using the self-gravity of the material, does not require complex mechanical mechanisms and electrical controls, greatly improves the in-place efficiency, and has a certain expandability of stations. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is a schematic perspective view of a columnar material clamping device provided by the specific embodiment of the present invention. The arrow in the figure shows the direction in which the material falls by gravity, and the state in the figure is that the material has not reached the bottom in-place groove.

[0031] Figure 2 is Figure 1 a schematic front view structure diagram of the columnar material clamping device in [reference]. The arrow in the figure shows the interlocking direction between the components of the material blocking unit when the material starts to exert force on the blocking bar.

[0032] Figure 3 is a schematic perspective view of the columnar material clamping device. The state in the figure is after the material has reached the bottom and the in-place groove is limited and stopped.

[0033] Figure 4 is Figure 3 a schematic front view structure diagram of [reference]. The arrow in the figure shows the interlocking direction between the components of the material blocking unit, and the dashed line in the figure is the initial state of the blocking bar of the second material blocking unit.

[0034] Figure 5 is a schematic diagram of the positional relationship between the pressing device and the clamping device.

[0035] Figure 6 is a schematic perspective view of the connection relationship between the material screening device and the transfer device.

[0036] Figure 7 is Figure 6 a schematic front view structure diagram of [reference].

[0037] Figure 8 is a schematic perspective view of a material conveying device provided by the present invention.

[0038] In the figure, 100 is the clamping device; 200 is the material screening device; 300 is the transfer device; 400 is the moving component; 500 is the columnar material; 600 is the material recycling box.

[0039] 1 is the bracket; 11 is the base; 12 is the side plate; 2 is the in-place groove; 3 is the material blocking unit; 31 is the blocking bar; 32 is the limit pin; 33 is the connecting rod; 4 is the material discharging component; 5 is the pressing device; 51 is the buckling groove; 6 is the material bin; 61 is the slope; 7 is the material screening component; 71 is the guiding slope; 8 is the conveyor belt; 9 is the material pushing component; 10 is the pushing mechanism. Specific implementation method

[0040] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] If Figures 1 to 4 As shown, the present invention provides a clamping device 100, comprising:

[0042] The top surface of the bracket 1 is inclined and a plurality of slots 2 are provided along the inclined direction to form a stepped support structure;

[0043] The material blocking mechanism is arranged on the bracket 1 near the position of the positioning slot 2; the material blocking mechanism can open the plurality of positioning slots 2 from bottom to top in a linked manner under the action of the material and form a blocking limit for the material in the opened positioning slots 2;

[0044] The material return assembly 4 is escalably disposed on the support 1, and includes an initial position and an ejection position. When the material return assembly 4 rises to the ejection position, the material in the slot 2 can be pushed away from the clamping device 100.

[0045] The top surface of the bracket 1 of the clamping device 100 is inclined and a plurality of slots 2 are provided along the inclined direction to form a stepped support structure; the material blocking mechanism provided on the bracket 1 near the slots 2 can sequentially open the plurality of slots 2 from bottom to top in a linked manner and form a blocking limit for the material in the opened slots 2, thereby realizing automatic progressive feeding by utilizing the material's own gravity. A set of clamping devices 100 realizes multi-station clamping, has certain station expandability, and greatly improves the efficiency of material placement; the present invention realizes multi-station clamping without the need to configure multiple sets of clamping mechanisms, has fewer components, and has a simple mechanical structure and control system.

[0046] As an optional implementation, the material blocking mechanism includes a plurality of material blocking units 3 that are sequentially connected in transmission, each material blocking unit 3 is correspondingly installed at a position slot 2, and a plurality of material blocking units 3 constitute a multi-hinge connecting rod 33 mechanism; the material blocking unit 3 includes a blocking bar 31, a limit pin 32 and a connecting rod 33, the blocking bar 31 and the connecting rod 33 can be rotatably connected to the side wall of the bracket 1, and two adjacent blocking parts can be linked through the connecting rod 33 located therebetween; the limit pin 32 can limit the rotation angle of the blocking bar 31.

[0047] Multiple material blocking units 3 form a multi-hinge connecting rod 33 mechanism to achieve linked action, with a simple structure and high reliability.

[0048] As an alternative embodiment, the connecting rod 33 is V-shaped, facilitating transmission with the adjacent stop bar 31 through two hypotenuses.

[0049] As an alternative embodiment, the stop bar 31 includes a blocking portion. The stop bar 31 has a material waiting state and a material blocking state. The angle formed by the blocking portion and the inclined surface of the bracket 1 is α. In the material waiting state, α = 60°, and in the material blocking state, the stop bar 31 is limited by the limit pin 32 and α = 90°.

[0050] As an alternative embodiment, the bracket 1 includes a base 11 and two side plates 12 located on both sides of the base 11, forming a structure with a U-shaped cross-section; the in-place groove 2 is opened on the inclined top surface of the side plate 12, and the unloading assembly 4 is arranged in a liftable manner in the cavity surrounded by the base 11 and the two side plates 12.

[0051] As Figure 8 shown, the present invention also provides a material conveying device, including the clamping device 100 as described above. Since the in-place clamping device 100 adopts an inclined stepped supporting structure and a linkage type material blocking mechanism, it realizes automatic progressive feeding by utilizing the self-gravity of the material, without the need for complex mechanical mechanisms and electrical controls, greatly improving the in-place efficiency and having a certain degree of station expandability.

[0052] As an alternative embodiment, the material conveying device further includes a pressing device 5 that is liftably installed above the clamping device 100. A fastening groove 51 adapted to the in-place groove 2 is opened on the bottom side of the pressing device 5; when the pressing device 5 is fastened to the clamping device 100, the in-place groove 2 and the fastening groove 51 can cooperate to press the material tightly.

[0053] As an alternative embodiment, the material conveying device further includes a material screening device 200, and the material screening device 200 is located upstream of the clamping device 100 in terms of conveying.

[0054] As an alternative embodiment, the material screening device 200 includes a material bin 6 and at least one material screening component 7. A slope 61 inclined from the feeding side to the discharging side is formed on the bottom surface of the material bin 6. The material screening component 7 is arranged in a liftable manner on the discharging side of the material bin 6, and the bottom of the slope 61 is connected to the adjacent material screening component 7. The columnar material 500 realizes preliminary screening when rolling down the slope 61 by gravity.

[0055] Compared with the traditional vibrating disk screening, it avoids the generation of vibration and noise of the mechanism, has less influence on the surface quality of the material due to reduced friction between materials; at the same time, this structure can be compatible with materials of different diameter specifications, has strong versatility, and realizes multi-purpose use of one machine.

[0056] As an alternative implementation, the top surfaces of all the screening components 7 are guiding inclined surfaces 71, which incline from the feeding side of the screening component 7 to its discharging side, and the guiding inclined surfaces 71 are used to control the flow direction of the material.

[0057] As an alternative implementation, the number of the screening components 7 is multiple, and the multiple screening components 7 are connected in sequence to form a stepped screening structure. Multi-stage screening effectively avoids the collision and friction between materials.

[0058] As an alternative implementation, the material conveying device further includes a transfer device 300, and the screening device 200 is connected to the clamping device 100 through the transfer device 300.

[0059] As an alternative implementation, the transfer device 300 includes a conveyor belt 8. The feeding side of the conveyor belt 8 is arranged at the discharging side of the last-stage screening component 7, and the discharging side of the conveyor belt 8 is arranged at the feeding side of the clamping device 100.

[0060] As an alternative implementation, a material pushing component 9 is arranged at the discharging side of the conveyor belt 8, which is used to push the material to the clamping device 100.

[0061] As an alternative implementation, the material conveying device further includes a moving component 400. The number of the clamping devices 100 is two sets, and the two sets of clamping devices 100 are arranged side by side on the moving component 400; the moving component 400 can reciprocate along the conveying direction of the conveyor belt 8, so that the material pushing component 9 can optionally be aligned with the feeding port of any one of the clamping devices 100.

[0062] As an alternative implementation, a reverse part removing component is arranged at the feeding side of the conveyor belt 8. The reverse part removing component includes a controller, a sensor and a material pushing mechanism 10. The sensor senses the shape of the material and feeds it back to the controller connected to it by signal. After analyzing the data, if there is a reverse part, the controller controls the material pushing mechanism 10 connected to it by signal to push the material back to the storage bin 6.

[0063] In the case of random dropping, the vast majority of general columnar materials 500 (also called rod-like materials) are in a lying posture, and only a few are in a standing posture by coincidence. The material conveying device of the present invention is particularly suitable for conveying such columnar materials 500. The material conveying device includes a stepped feeding and screening device 200.

[0064] See Figure 6 and Figure 7 , this embodiment gives a two-stage screening device 200, that is, two screening components 7 are provided. The specific screening process is as follows:

[0065] (1) Manually pour the material into the storage bin 6, and under the action of gravity, the material will slide down the slope 61 to the bottom of the storage bin 6;

[0066] (2) The primary screening component 7 will move to the bottom of the bin 6. Under the action of the guiding inclined plane 71, the material will continue to slide downward (towards the lower left), and then after a short wait, the primary screening component 7 will move upward. At this time, a certain number of materials will be randomly carried;

[0067] (3) When the primary screening component 7 moves to half the height of the depth of the bin 6, the secondary screening mechanism moves downward to pick up the materials on the primary screening component 7. Since the material dropping surface (guiding inclined plane 71) of the screening component 7 is all provided with a slope 61, when the height of the secondary screening component 7 is lower than that of the primary screening component 7, the materials will naturally slide onto the material dropping surface of the secondary screening component 7 under the action of gravity;

[0068] (4) Subsequently, the secondary screening component 7 rises again to deliver the materials to the set position, and the materials slide from the guiding inclined plane 71 of the secondary screening component 7 onto the conveyor belt 8 (belt line).

[0069] When the bin 6 is designed to be relatively deep (set the depth as H), the number of stages of the screening component 7 can be increased (the total number of stages is N), and then the movement height of each stage of the screening component 7 is H / N. The connection and cooperation between multiple stages of the screening component 7 can quickly send the materials at the bottom of the bin 6 to the target position.

[0070] As Figure 8 shown, there are two sets of clamping devices 100 (No. A and No. B) in this embodiment. After the materials reach the belt, they first pass through the reverse part removing component. This component is designed to detect whether the materials are in reverse. If the materials are in reverse, the materials will be pushed back into the bin 6 for re-screening. When the materials reach the material pushing component 9 along the conveyor belt 8, the moving component 400 first moves the vacant A clamping device (or B clamping device) to the pushing port corresponding to the material pushing component 9, and then the material pushing component 9 pushes a material onto the clamping device 100. When the A clamping device is full, the moving component 400 moves to make the B clamping device move to the material port, and the materials are received alternately. It realizes that when one set of clamping device 100 is receiving materials, the other set of clamping device 100 performs related processing operations. The A clamping device and the B clamping device are fixedly installed on the moving component 400 together, and the moving component 400 is driven by a cylinder to move left and right reciprocally. For example, when the cylinder extends, it pushes the two sets of clamping devices 100 to move left together, aligning the B clamping device with the discharge port. After the B clamping device is full of materials, the cylinder retracts to drive the two sets of clamping devices 100 to move to the right. At this time, the A clamping device just aligns with the discharge port, and so on, realizing the feeding of the two sets of clamping devices 100.

[0071] As Figure 1 and Figure 2As shown in the figure, when the material reaches the stepped clamping device 100, it will slide down along the inclined surface of the support 1 and be supported by the side plates 12 on both sides of the support 1. When waiting for the material, the included angle α between the lowermost stop bar 31 and the inclined surface is 60°, and the other stop bars 31 are flush with the inclined surface (there is no obstruction when the material falls). After the material enters the slope 61, it will pass through the plane formed by the other stop bars 31 and the side plates 12, directly roll to the lowermost stop bar 31, and under the action of the gravity of the material, the lowermost stop bar 31 will be pushed from 60° to 90° (or a larger angle). When the stop bar 31 rotates from α = 60° to α = 90°, it will push the connecting rod 33, and the connecting rod 33 rotates in the direction indicated by the Figure 2 arrow, and then pushes the previous stop bar 31 to rotate. When it reaches α = 90°, the previous stop bar 31 will rotate until α = 60° under the push of the connecting rod 33. As shown in Figure 3 and Figure 4 , at this time, the materials coming later will be blocked by the stop bar 31 newly flipped up by 60°, and so on for the subsequent materials. Finally, the clamping station (in-place groove 2) of the entire stepped clamping device 100 will be filled. When the material enters the first-stage stop bar 31, due to the gravity of the material, the first-stage stop bar 31 will be pushed from the initial α = 60° to α = 90°. During the movement of the first-stage stop bar 31 from 60° to 90°, it drives the first-stage connecting rod 33 to move, and when the connecting rod 33 rotates, it will drive the second-stage stop bar 31 to rotate, and so on until all the in-place grooves 2 are filled. (That is, in the initial state, the lowermost stop bar 31 forms an angle of 60° with the inclined surface. When the material arrives, it pushes the stop bar 31 to move, the connecting rod 33 is forced to rotate and then pushes the subsequent stop bar 31. The first material arrives and falls into the in-place groove 2, and the stop bar 31 is pushed to 90°, and the subsequent stop bar 31 is pushed to rotate to α = 60°).

[0072] As shown in Figure 5 , after all the materials are in place, the pressing device 5 positions and clamps them to ensure that the materials will not move. After the materials are fixed and processed, the pressing device 5 is loosened, and then the material is lifted from the in-place groove 2 by the unloading component 4 (lifting block). When it is higher than the last stop bar 31, the material will slide down along the slope 61 surface of the lifting block into the material recycling box 600. The unloading component 4 can be driven and transmitted by a lifting device of the existing technology to achieve lifting (such as a lead screw, a cylinder or a telescopic rod).

[0073] The reciprocating screening device 200 can efficiently screen out materials from the material pile. The multi-stage design can not only achieve screening more quickly, but also enable the silo 6 to have a greater depth design. After the screened materials are adjusted in posture, they reach the stepped clamping device 100, and the effect of being clamped in place one by one in sequence is achieved by using the gravity of the materials themselves, without the participation of other power and electrical devices. This greatly simplifies the complexity of the mechanism.

[0074] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A clamping device, characterized in that: include: The bracket (1) has a top surface which is arranged in an inclined manner and has a plurality of positioning grooves (2) formed along the inclined direction to form a step-shaped supporting structure; A material blocking mechanism is arranged on the bracket at a position close to the positioning groove; the material blocking mechanism can, under the action of the material, sequentially open the plurality of positioning grooves (2) from bottom to top in a linked manner and form a blocking limit for the material in the opened positioning grooves (2); A material return assembly (4) which is escalably disposed on the support (1), and comprises an initial position and an ejection position, and when the material return assembly rises to the ejection position, it can push the material in the positioning groove (2) away from the clamping device (100); The material blocking mechanism comprises a plurality of material blocking units (3) which are sequentially connected in a transmission manner, each of the material blocking units (3) being correspondingly mounted at one of the positioning slots (2), and the plurality of material blocking units (3) forming a multi-hinge connecting rod mechanism; the material blocking unit (3) comprises a blocking bar (31), a limiting pin (32) and a connecting rod (33), the blocking bar (31) and the connecting rod (33) being both rotatably connected to the side wall of the bracket, and two adjacent blocking bars (31) being able to be linked via the connecting rod (33) located therebetween; the limiting pin (32) being able to limit the rotation angle of the blocking bar (31); The connecting rod (33) is V-shaped; The bracket (1) comprises a base (11) and two side panels (12) located on both sides of the base (11), forming a structure with a U-shaped cross section; the positioning groove (2) is arranged on the inclined top surface of the side panel (12), and the material removal component (4) is arranged in a liftable manner in a cavity surrounded by the base (11) and the two side panels (12).

2. The clamping device according to claim 1, characterized in that: The blocking bar (31) comprises a blocking portion, the blocking bar (31) has a material-waiting state and a material-blocking state, the blocking portion and the inclined surface of the bracket (1) form an angle α, in the material-waiting state α=60°, in the material-blocking state the blocking bar (31) is limited by the limiting pin (32) and α=90°.

3. A material conveying equipment, characterized in that: It comprises the clamping device described in any one of claims 1-2.

4. The material conveying equipment according to claim 3, characterized in that: It also includes a clamping device (5) which is installed on the top of the clamping device in a liftable manner, and a snap-fitting groove (51) which is matched with the positioning groove (2) is provided on the bottom side of the clamping device (5); when the clamping device is snap-fitted with the clamping device, the positioning groove (2) and the snap-fitting groove (51) can cooperate to clamp the material.

5. The material conveying equipment according to claim 3 or 4, characterized in that: It also comprises a screening device (200), wherein the screening device (200) is located upstream of the conveying of the clamping device (100).

6. The material conveying equipment according to claim 5, characterized in that: The screening device (200) comprises a silo (6) and at least one screening assembly (7); the bottom surface of the silo (6) is formed with a slope (61) inclined from its feeding side to its discharging side; the screening assembly (7) is liftably arranged on the discharging side of the silo (6), and the bottom of the slope (61) is connected to an adjacent screening assembly (7).

7. The material conveying equipment according to claim 6, characterized in that: The top surfaces of all the screening material assemblies (7) have a guiding slope (71), and the guiding slope (71) is inclined from the feeding side of the screening material assembly (7) to the discharging side thereof.

8. The material conveying equipment according to claim 6, characterized in that: The number of the screening material components (7) is multiple, and the multiple screening material components (7) are connected in sequence to form a stepped screening material structure.

9. The material conveying equipment according to claim 6, characterized in that: It also includes a transfer device (300), and the screening device (200) and the clamping device (100) are connected via the transfer device (300).

10. The material conveying equipment according to claim 9, characterized in that: The transfer device (300) comprises a conveyor belt (8), the inlet side of the conveyor belt (8) being arranged at the outlet side of the final screening assembly (7), and the outlet side of the conveyor belt (8) being arranged at the inlet side of the clamping device (100).

11. The material conveying equipment according to claim 10, characterized in that: A material pushing component (9) is provided on the discharge side of the conveyor belt (8) for pushing the material to the clamping device (100).

12. The material conveying equipment according to claim 11, characterized in that: It also includes a moving component (400), the number of the clamping devices (100) is two sets, and the two sets of the clamping devices (100) are arranged side by side on the moving component (400); the moving component (400) can reciprocate along the conveying direction of the conveyor belt (8), so that the material pushing component (9) can be optionally aligned with the feed port of any of the clamping devices (100).

13. The material conveying equipment according to claim 10, characterized in that: The feeding side of the conveyor belt (8) is provided with a reverse piece rejection component, the reverse piece rejection component comprising a controller, a sensor and a material pushing mechanism (10), the sensor sensing the shape of the material and feeding back to the controller connected to its signal, and the controller analyzing the data controls the material pushing mechanism (10) connected to its signal to push the material back to the silo (6) if there is a reverse piece.

Images