Sheet lifting and conveying device

Abstract

The utility model discloses a sheet lifting and conveying device which comprises a rack and a conveying mechanism, the conveying mechanism is provided with a conveying path, the extending direction of the tail end of the conveying path is inclined upwards, and the sheet lifting and conveying device further comprises a removing mechanism located at the tail end of the conveying path. The sheet lifting and conveying device is provided with an output station and a removing station in areas above and below the removing mechanism respectively; the removing mechanism is provided with a removing plate capable of performing linear reciprocating motion, the removing plate is provided with a first guide face in the extending direction of the tail end of the conveying path and a second guide face in the direction inclined to the tail end of the conveying path, and the conveying path is communicated with the output station through the first guide face. And the conveying path is communicated with the removing station through the second guide surface. The sheet lifting and conveying device has the advantages that the problem that an existing sheet lifting and conveying device can only continuously convey sheets to the output end and cannot stop conveying the sheets to the output end or reject bad sheets under the non-stop condition is solved. The sheet lifting and conveying device is small in occupied space, switching reaction time is short, and sheet supplying to the sheet processing device can be interrupted under the condition that the sheet lifting and conveying device is not shut down.

Description

Technical Field

[0001] The utility model relates to the field of conveying equipment, in particular to a sheet material lifting and conveying device. Background Art

[0002] The sheet is a carton that is still in a folded state. The existing sheet lifting and conveying device only lifts the sheet from a low station to a high station. The conveying path of the sheet includes a horizontal straight section, an arc transition section, and a slope lifting section. The sheet is first placed in the horizontal straight section, and then pushed into the arc transition section and finally into the slope lifting section. During use, the sheet lifting and conveying device is connected to other components at the end of the slope lifting section of the conveying path as an output end.

[0003] The sheet material processing device connected to the sheet material lifting and conveying device needs to suspend operation during operation and restart after the operating conditions are met, that is, there is a work suspension in the sheet material use link. In the prior art, the sheet material lifting and conveying device is only responsible for conveying sheets, and will only convey sheets continuously. Its continuous conveying characteristics correspond to the process of continuous sheet material production. Therefore, the suspension in the sheet material use link must be inconsistent with the continuous sheet material conveying process, that is, the continuous sheet material conveying process is disconnected from the work suspension in the sheet material use link. In addition, when the sheet material is damaged, it is necessary to stop the machine to remove the damaged sheet, and then restart the machine, which will affect the efficiency of the entire sheet material lifting and conveying device. Utility Model Content

[0004] The utility model aims to provide a sheet lifting and conveying device, which can effectively solve the problem that the sheet lifting and conveying device can only continuously convey sheets to downstream equipment, cannot pause to convey sheets to the output end or remove defective sheets without stopping the machine.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] A sheet material lifting and conveying device comprises a frame and a conveying mechanism, wherein the conveying mechanism is mounted on the frame, the conveying mechanism is provided with a conveying path, the extension direction of the end of the conveying path is inclined upward, the sheet material lifting and conveying device further comprises a rejecting mechanism, the rejecting mechanism is located at the end of the conveying path, the sheet material lifting and conveying device is provided with an output station in the upper area of ​​the rejecting mechanism, and the sheet material lifting and conveying device is provided with a rejecting station in the lower area of ​​the rejecting mechanism;

[0007] The reject mechanism is provided with a reject plate capable of linear reciprocating motion, the reject plate is provided with a first guide surface smoothly connected with the conveying path in the extension direction of the end of the conveying path, the reject plate is provided with a second guide surface intersecting with the conveying path in a direction inclined to the end of the conveying path, the first guide surface is located above the second guide surface, the conveying path is connected with the output station through the first guide surface, and the conveying path is connected with the reject station through the second guide surface.

[0008] In the above-mentioned sheet lifting and conveying device, the conveying mechanism includes a plurality of parallel and spaced conveying parts, and the rejecting mechanism includes a plurality of parallel and spaced rejecting plates, and the rejecting plates and the conveying parts are staggered.

[0009] In the above-mentioned sheet lifting and conveying device, the rejection mechanism also includes a connecting rod connecting all the rejection plates in series, both ends of the connecting rod are connected to sliders slidably arranged on the frame, and the frame is provided with a driving cylinder for driving the rejection mechanism to slide.

[0010] In the above-mentioned sheet lifting and conveying device, there are at least three connecting rods, and both ends of all the connecting rods are fixed by connecting plates respectively. Each connecting plate is fixed with a slider, and the frame is provided with a linear slide rail compatible with the slider.

[0011] In the above-mentioned sheet material lifting and conveying device, the first guide surface is a plane.

[0012] In the above-mentioned sheet material lifting and conveying device, the second guide surface is an arc-shaped surface.

[0013] In the above-mentioned sheet lifting and conveying device, the angle formed by the first guide surface and the second guide surface at the front end of the rejecting plate is an acute angle.

[0014] In the above sheet material lifting and conveying device, the conveying path includes an arc-shaped uphill section at the tail section, and the end of the uphill section is connected to the rejection mechanism.

[0015] In the above-mentioned sheet lifting and conveying device, the conveying mechanism further comprises a pushing mechanism, the pushing mechanism is located between the two parallel and spaced-apart conveying parts, and the pushing mechanism is provided with a pushing block for pushing the sheet.

[0016] In the above-mentioned sheet material lifting and conveying device, the pushing mechanism is a chain transmission mechanism or a belt transmission mechanism.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] By setting a rejection mechanism at the end of the conveying path, the problem that the current sheet lifting and conveying device can only continuously convey sheets to downstream equipment and cannot pause to convey sheets to the output end or reject bad sheets without stopping the machine is solved. Since it is set at the end of the conveying path, it is convenient to modify the existing sheet lifting and conveying device. The end of the conveying path is divided into an output station and a rejection station distributed up and down by the rejection mechanism. The output station is docked with the original end docking mechanism. The rejection station is an additional station for temporary storage of sheets conveyed by the sheet lifting and conveying device or as a storage station for damaged sheets, thereby realizing the interruption of supplying sheets to the sheet processing device without stopping the sheet lifting and conveying device. The output station and the rejection station can be switched by the rejection mechanism.

[0019] The switching between the output work and the rejection station is realized by the rejection plate of the rejection mechanism with linear reciprocating motion. The linear reciprocating motion occupies less space than the swinging motion and has a faster switching reaction time, which can better adapt to the switching requirements when the sheet is transported at high speed. The rejection plate is provided with a first guide surface and a second guide surface to guide the sheet to the output station and the rejection work respectively. The switching of different stations is controlled by selecting whether the first guide surface or the second guide surface of the rejection plate is connected to the conveying path. During normal conveying, the first guide surface is smoothly connected with the conveying path to ensure the smooth conveying of the sheet; when it is necessary to stop conveying the sheet to the conveying end or to reject the defective sheet, the rejection plate switches the second guide surface to connect with the conveying path, so that the sheet enters the rejection station, that is, the sheet will be located below the original docking mechanism, which will not affect the original docking mechanism, and the space below the original docking mechanism can be fully utilized to arrange the recovered sheet.

[0020] Furthermore, the conveying mechanism includes a plurality of parallel and spaced conveying parts, and the rejecting mechanism includes a plurality of parallel and spaced rejecting plates, and the rejecting plates are staggered with the conveying parts. The parallel and spaced conveying parts can reduce the weight and manufacturing difficulty of the conveying mechanism while ensuring the smooth conveying of the sheet, and the rejecting plates also have a plurality of parallel and spaced rejecting plates staggered with the conveying parts, making full use of the gaps between the conveying parts, and making the transition between the rejecting plates and the conveying parts smoother, so that the transportation of the sheet is smoother.

[0021] Furthermore, the rejection mechanism also includes a connecting rod that connects all the rejection plates in series, and both ends of the connecting rod are connected to a slider that is slidably arranged on the frame, and the frame is provided with a driving cylinder that drives the rejection mechanism to slide. The connecting rod allows all the rejection plates to maintain synchronous linear reciprocating motion, and the slider is used to slide on the frame, which reduces the resistance of the rejection mechanism during movement, and the frame can be used to support and limit the trajectory of the rejection mechanism. The cylinder is used as the power source for the sliding of the lifting mechanism, which can achieve a rapid response of the rejection mechanism.

[0022] Furthermore, there are at least three connecting rods, and both ends of all the connecting rods are fixed by connecting plates, each connecting plate is fixed with a slider, and the frame is provided with a linear slide rail adapted to the slider. More than three connecting rods can prevent the rejection mechanism from flipping during movement and better distribute the force on the rejection plate.

[0023] Furthermore, the first guide surface is a plane, which can more quickly lift the sheet to a higher height and dock with the sheet processing device.

[0024] Furthermore, the second guide surface is an arc-shaped surface. The arc-shaped second guide surface can guide temporarily unused sheets or damaged sheets to a relatively low position of the rejection station, so as to maximize the vertical distance between the rejection station and the output station, so as to leave enough space between the two different stations to set other components of the rejection mechanism.

[0025] Furthermore, the angle formed by the first guide surface and the second guide surface at the front end of the rejection plate is an acute angle. The acute angle allows the rejection mechanism to have an obvious intermediate position when switching between the output station and the rejection station, thereby switching between the two stations more quickly, and when switching between the two stations, it is prevented that the sheet is against the end of the rejection plate and thus damaged.

[0026] Furthermore, the conveying path includes an arc-shaped uphill section at the tail section, and the end of the uphill section is connected to the rejection mechanism. The arc-shaped uphill section has a shorter projection on the horizontal plane when lifting the same height, which can save the length occupied by the sheet lifting and conveying device. The arc-shaped uphill section can also better connect with the rejection mechanism, making the connection smoother, avoiding the situation where the straight uphill section connects with the rejection mechanism and there is an obvious angle, which causes the sheet to get stuck.

[0027] Furthermore, the conveying mechanism further comprises a pushing mechanism, the pushing mechanism is located between the two parallel and spaced conveying parts, and the pushing mechanism is provided with a pushing block for pushing the sheet.

[0028] Furthermore, the pushing mechanism is a chain transmission mechanism or a belt transmission mechanism. Chain transmission or belt transmission can drive the pushing mechanism to circulate in a long-term and stable manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of a sheet material lifting and conveying device of the utility model;

[0030] Figure 2 The three-dimensional structure of the rejection mechanism and the conveying part in the utility model Figure 1 ;

[0031] Figure 3The three-dimensional structure of the rejection mechanism and the conveying part in the utility model Figure 2 ;

[0032] Figure 4 This is a schematic diagram of the structure when the rejecting mechanism in the utility model is connected to the output station;

[0033] Figure 5 It is a structural schematic diagram of the rejecting mechanism in the utility model when it is connected to the rejecting station.

[0034] The accompanying drawings are marked as follows:

[0035] Frame 100, linear guide rail 110;

[0036] Conveying mechanism 200, conveying part 210, uphill section 220, pushing block 230, pushing mechanism 240;

[0037] The rejecting mechanism 300 , the rejecting plate 310 , the first guide surface 311 , the second guide surface 312 , the connecting rod 320 , the slider 330 , the driving cylinder 340 , and the connecting plate 350 . DETAILED DESCRIPTION

[0038] A sheet material lifting and conveying device comprises a frame 100 and a conveying mechanism 200, wherein the conveying mechanism 200 is mounted on the frame 100, the conveying mechanism 200 is provided with a conveying path, the extension direction of the end of the conveying path is inclined upward, the sheet material lifting and conveying device further comprises a rejecting mechanism 300, the rejecting mechanism 300 is located at the end of the conveying path, the sheet material lifting and conveying device is provided with an output station in the upper area of ​​the rejecting mechanism 300, and the sheet material lifting and conveying device is provided with a rejecting station in the lower area of ​​the rejecting mechanism 300;

[0039] The rejecting mechanism 300 is provided with a rejecting plate 310 which can reciprocate linearly. The rejecting plate 310 is provided with a first guide surface 311 which is smoothly connected with the conveying path in the extension direction of the end of the conveying path. The rejecting plate 310 is provided with a second guide surface 312 which intersects with the conveying path in a direction inclined to the end of the conveying path. The first guide surface 311 is located above the second guide surface 312. The conveying path is connected with the output station through the first guide surface 311, and the conveying path is connected with the rejecting station through the second guide surface 312.

[0040] By setting a rejection mechanism 300 at the end of the conveying path, the problem that the current sheet lifting and conveying device can only continuously convey sheets to the downstream equipment and cannot stop conveying sheets to the output end or reject bad sheets without stopping the machine is solved. Since it is set at the end of the conveying path, it is convenient to modify the existing sheet lifting and conveying device. The end of the conveying path is divided into an output station and a rejection station distributed up and down by the rejection mechanism 300. The output station is docked with the original end docking mechanism. The rejection station is an additional station for temporarily storing sheets conveyed by the sheet lifting and conveying device or as a damaged sheet storage station, so as to interrupt the supply of sheets to the sheet processing device without stopping the sheet lifting and conveying device. The output station and the rejection station can be switched by the rejection mechanism 300.

[0041] The switching between the output work and the rejection station is realized by the rejection plate 310 of the rejection mechanism 300 with linear reciprocating motion. The linear reciprocating motion occupies less space than the swinging motion, and the switching reaction time is faster, which can better adapt to the switching requirements when the sheet is transported at high speed. The rejection plate 310 is provided with a first guide surface 311 and a second guide surface 312 to guide the sheet to the output station and the rejection work respectively. The switching of different stations is controlled by selecting whether the first guide surface 311 or the second guide surface 312 of the rejection plate 310 is connected with the conveying path. During the normal conveying process, the first guide surface 311 is smoothly connected with the conveying path to ensure the smooth conveying of the sheet; when it is necessary to stop conveying the sheet to the conveying end or to reject the defective sheet, the rejection plate 310 switches the second guide surface 312 to connect with the conveying path, so that the sheet enters the rejection station, that is, the sheet will be located below the original docking mechanism, which will not affect the original docking mechanism, and the space below the original docking mechanism can be fully utilized to arrange the recovered sheet.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] See also Figures 1 to 5 This is an embodiment of a sheet material lifting and conveying device of the utility model, which comprises a frame 100 and a conveying mechanism 200, wherein the conveying mechanism 200 is mounted on the frame 100, and the conveying mechanism 200 is provided with a conveying path, wherein the starting position of the conveying path has a relatively low level, the end of the conveying path has a relatively high level, and the extension direction of the end of the conveying path is inclined upward, so as to convey the sheet material from a low position to a high position, and better enter the sheet material processing device at the high position. In this embodiment, the front section of the conveying path is a horizontal section, which allows the sheet material to be better placed on the conveying path for easy transportation, and the rear section of the conveying path is an uphill section 220, which is used to raise the level of the sheet material, thereby conveying it to a higher position.

[0047] The sheet lifting and conveying device includes a rejection mechanism 300, which is located at the end of the conveying path. The sheet lifting and conveying device is provided with an output station in the upper area of ​​the rejection mechanism 300, and the sheet lifting and conveying device is provided with a rejection station in the lower area of ​​the rejection mechanism 300. The output station is used to dock with the sheet processing device to maintain the original function of the sheet lifting and conveying device; the rejection station is a station for accommodating sheets when it is necessary to suspend the output of sheets to the sheet processing device or when there are damaged sheets. The rejection mechanism 300 plays a switching role here. When the conveying mechanism 200 does not stop, the conveying path is switched to be connected with the output station or the rejection station through the rejection mechanism 300, so as to keep the conveying mechanism 200 in a state of continuously conveying sheets.

[0048] The rejection mechanism 300 is provided with a rejection plate 310 that can reciprocate linearly. The rejection plate 310 is provided with a first guide surface 311 that smoothly connects with the conveying path in the extension direction of the end of the conveying path. The first guide surface 311 is connected to the output station. The first guide surface 311 can ensure that the sheet passes smoothly through the output station to the sheet processing device. The rejection plate 310 is provided with a second guide surface 312 that intersects with the conveying path in a direction inclined to the end of the conveying path. The second guide surface 312 is connected to the rejection station. After the rejection plate 310 moves, the sheet can be guided by the second guide surface 312 after leaving the conveying path, and the sheet enters the rejection station, thereby interrupting the conveyance of the sheet to the sheet processing device. For damaged sheets, the rejection station can be used as a recycling position to recycle and process the discarded sheets; if the sheet processing device needs to be debugged and the conveyance of the sheet is interrupted, the sheets at the rejection station can be collected and returned to the starting point of the conveying path for continued use. Generally, the position of the conveying mechanism 200 and the position of the sheet processing device are fixed, and the sheet processing device is located at a higher level than the conveying mechanism 200. Therefore, the output station is located above the rejecting station, and the corresponding first guide surface 311 is also located above the second guide surface 312. In this way, the relative positions of the original conveying mechanism 200 and the sheet processing device will not be changed, and the space under the sheet processing device can be fully utilized to recycle the sheets.

[0049] Furthermore, the conveying mechanism 200 includes a plurality of parallel and spaced conveying parts 210, the length direction of the conveying part 210 is parallel to the conveying direction of the conveying path, and the conveying part 210 mainly supports the sheet. Therefore, arranging the conveying parts 210 into a plurality of parallel and spaced arrangements can not only reduce the weight of the conveying mechanism 200, but also ensure that the sheet has sufficient support to be transported smoothly. The rejection mechanism 300 includes a plurality of parallel and spaced rejection plates 310, and the rejection plates 310 are staggered with the conveying parts 210. The rejection plates 310 are arranged by making full use of the gaps between the conveying parts 210, so that the connection between the rejection plates 310 and the conveying path can be smoother, and the sheet can also obtain sufficient support on the first guide surface 311 of the rejection plate 310, so that the sheet can smoothly enter the output station.

[0050] A pushing mechanism 240 may also be provided between adjacent conveying parts 210 to drive the sheet material to move forward along the conveying path. The pushing mechanism 240 may be a chain transmission mechanism or a belt transmission mechanism. A pushing block 230 is provided on the chain or belt. The pushing block 230 protrudes from the surface of the conveying path, so that the pushing block 230 can press against the tail of the sheet material and push the sheet material along the conveying path. In order to keep the sheet material moving along the conveying path, the pushing mechanism 240 needs to be provided in parallel with the conveying part 210 to prevent the sheet material from deviating from the conveying path and falling outside the conveying mechanism 200.

[0051] In order to keep all the rejection plates 310 on the ejection mechanism moving synchronously, the rejection mechanism 300 also includes a connecting rod 320 that connects all the rejection plates 310 in series, and both ends of the connecting rod 320 are connected to a slider 330 that is slidably set on the frame 100. The slider 330 reduces the resistance of the rejection mechanism 300 when it moves, allowing the rejection mechanism 300 to move more smoothly, and the frame 100 can limit the sliding direction of the rejection plate 310 so that it keeps sliding along a straight line, and the connecting rod 320 can ensure that all the rejection plates 310 are synchronously reciprocating. In addition, a driving cylinder 340 that drives the rejection mechanism 300 to slide is also provided on the frame 100. The cylinder body of the driving cylinder 340 is fixed on the frame 100, and the piston of the driving cylinder 340 is connected to the connecting rod 320 or the slider 330.

[0052] Furthermore, there are at least three connecting rods 320 to ensure that all the reject plates 310 have sufficient connection rigidity and that the reject plates 310 will not rotate around one of the connecting rods 320, thereby keeping the first guide surface 311 and the second guide surface 312 in the correct position at all times. Both ends of all the connecting rods 320 are fixed by connecting plates 350 respectively to further determine the relative positions of all the connecting rods 320, and the slider 330 is fixed on the connecting plate 350, and a linear slide rail 110 that is slidably matched with the slider 330 is provided on the frame 100 to ensure that the reject plate 310 reciprocates along a straight line.

[0053] The first guide surface 311 on the rejection plate 310 is a plane. After the sheet contacts the first guide surface 311, the height of the sheet can be quickly raised. The second guide surface 312 on the rejection plate 310 is an arcuate surface, and the center of the arcuate surface faces downward. After the sheet contacts the second guide surface 312, the movement direction will be changed. On the one hand, the distance between the rejection station and the output station is expanded, the rejection mechanism 300 can be better arranged, and there is enough space to store the sheets passing through the rejection station. On the other hand, through the arcuate second guide surface 312, the movement direction of the sheet is no longer upward, and can be changed to horizontal or downward movement, which is more conducive to the collection of the sheet.

[0054] In this embodiment, the angle formed by the first guide surface 311 and the second guide surface 312 at the front end of the rejection plate 310 is an acute angle. The so-called front end of the rejection plate 310 refers to the end of the rejection plate 310 close to the conveying path. The angle formed at this position is an acute angle. This can avoid an obvious intermediate position when the rejection mechanism 300 switches between the output station and the rejection station, thereby switching between the two stations more quickly. It can also avoid the sheet being damaged by the sheet pressing against the end of the rejection plate 310 when switching between the two stations.

[0055] like Figure 4As shown, the direction of the arrow in the figure is the sheet conveying direction. During normal operation, the sheets are stacked at the starting position of the conveying mechanism 200, that is, the front section of the conveying path. Through the operation of the pushing mechanism 240, the pushing mechanism 240 drives the push block 230 to operate, pushing the sheet out of the conveying path from the end of the conveying path. The push block 230 abuts against the tail of the sheet. As the pushing mechanism 240 moves, the push block 230 pushes the sheet along the conveying path. When the sheet enters the rear section of the conveying path, the height of the sheet begins to rise. At this time, the first guide surface 311 of the rejection mechanism 300 is connected with the conveying path. After leaving the conveying path, the sheet enters the sheet processing device along the first guide surface 311 to start the subsequent process. A plurality of push blocks 230 are arranged at intervals on the pushing mechanism 240, so as to continuously push the sheet to the sheet processing device. A camera can be installed on the frame 100 to identify whether there is any abnormality in the sheet, such as whether the sheet is defective. If a sheet defect is found, such as Figure 5 As shown, the arrow direction in the figure is the sheet conveying direction, the driving cylinder 340 moves, pushing the rejection plate 310 to move forward, so that the first guide surface 311 is separated from the conveying path, and the second guide surface 312 intersects with the conveying path. At this time, the sheet leaves the conveying path and enters the rejection station under the action of the second guide surface 312. After the sheet leaves the second guide surface 312, the driving cylinder 340 is restarted to control the rejection plate 310 to recycle, and the first guide surface 311 reconnects with the conveying path. In addition to using a camera to automatically identify damaged sheets, manual observation can also be used to find damaged sheets and remotely drive the driving cylinder 340 to drive the rejection plate 310. Of course, if the sheet processing device needs to be debugged and the sheet conveying to the sheet processing device needs to be temporarily interrupted, the driving cylinder 340 can also be started to allow the second guide surface 312 to intersect with the conveying path to convey the sheet to the rejection station.

[0056] Through the above-mentioned sheet material lifting and conveying device, a rejecting station is added by using the rejecting mechanism 300, so that the sheet material lifting and conveying device can interrupt the conveying of sheets to the sheet material processing device without stopping the machine, and because the rejecting mechanism 300 is installed at the end of the conveying path, the existing sheet material lifting and conveying device can be easily modified without destroying the structure of the original sheet material lifting and conveying mechanism 200. The rejecting mechanism 300 uses a linear reciprocating motion to switch between the output station and the rejecting station. Compared with the swing type, it occupies a smaller volume during switching, and is suitable for the location arrangement of the station shortage, making the structure of the entire sheet material lifting and conveying mechanism 200 more compact.

[0057] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A sheet lifting and conveying device, comprising a frame and a conveying mechanism, wherein the conveying mechanism is mounted on the frame, the conveying mechanism is provided with a conveying path, and the extension direction of the end of the conveying path is inclined upward, characterized in that: The sheet lifting and conveying device further comprises a rejection mechanism, the rejection mechanism is located at the end of the conveying path, the sheet lifting and conveying device is provided with an output station in the upper area of ​​the rejection mechanism, and the sheet lifting and conveying device is provided with a rejection station in the lower area of ​​the rejection mechanism; The reject mechanism is provided with a reject plate capable of linear reciprocating motion, the reject plate is provided with a first guide surface smoothly connected with the conveying path in the extension direction of the end of the conveying path, the reject plate is provided with a second guide surface intersecting with the conveying path in a direction inclined to the end of the conveying path, the first guide surface is located above the second guide surface, the conveying path is connected with the output station through the first guide surface, and the conveying path is connected with the reject station through the second guide surface.

2. A sheet material lifting and conveying device as claimed in claim 1, characterized in that: The conveying mechanism comprises a plurality of conveying parts which are arranged in parallel and at intervals, and the rejecting mechanism comprises a plurality of rejecting plates which are arranged in parallel and at intervals, and the rejecting plates are arranged alternately with the conveying parts.

3. A sheet material lifting and conveying device as claimed in claim 2, characterized in that: The rejection mechanism also includes a connecting rod connected in series with all the rejection plates, both ends of the connecting rod are connected to sliders slidably arranged on the frame, and the frame is provided with a driving cylinder for driving the rejection mechanism to slide.

4. A sheet material lifting and conveying device as claimed in claim 3, characterized in that: There are at least three connecting rods, and both ends of all the connecting rods are fixed by connecting plates respectively. Each connecting plate is fixed with a sliding block, and the frame is provided with a linear slide rail matched with the sliding block.

5. The sheet material lifting and conveying device according to claim 1, characterized in that: The first guide surface is a plane.

6. The sheet material lifting and conveying device according to claim 1, characterized in that: The second guide surface is an arc-shaped surface.

7. The sheet material lifting and conveying device according to claim 1, characterized in that: The angle formed by the first guide surface and the second guide surface at the front end of the rejecting plate is an acute angle.

8. The sheet material lifting and conveying device according to claim 1, characterized in that: The conveying path includes an arc-shaped uphill section at the tail section, and the end of the uphill section is connected to the rejection mechanism.

9. The sheet material lifting and conveying device according to claim 2, characterized in that: The conveying mechanism further comprises a pushing mechanism, and the pushing mechanism is located between the two parallel and spaced conveying parts, and the pushing mechanism is provided with a pushing block for pushing the sheet.

10. The sheet material lifting and conveying device according to claim 9, characterized in that: The pushing mechanism is a chain transmission mechanism or a belt transmission mechanism.

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