Paper unloading machine

Abstract

The utility model relates to a paper unloading machine which comprises a base module, a paper carrying module and a paper pushing module. The paper carrying module comprises a first cross beam, a paper carrying unit and a stop unit. The paper carrying unit comprises a paper carrying table connected with the first cross beam in a sliding mode, a paper carrying driver connected with the paper carrying table, a turning plate hinged to the front end of the paper carrying table, a supporting rod arranged at the bottom of the paper carrying table in a sliding mode, a supporting driver connected with the supporting rod, a pressing plate installed on the paper carrying table and a paper pressing driver connected with the pressing plate. The front end of the supporting rod abuts against the bottom face of the turning plate so as to play a supporting role. The supporting driver is used for driving the supporting rod to linearly move in the moving direction of the paper carrying table so as to push the turning plate to rotate. By means of the turning plate at the front end of the paper carrying table, a supporting plane is formed when paper is carried, horizontal plane bearing is provided for the paper, the paper is guided to slide downwards in a downward turning mode when the paper is unloaded, the requirement for paper unloading is met, and therefore the problem that the side edges of a paper pile are uneven when soft paper is stacked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a paper unloading machine. Background Art

[0002] In the paper printing industry, the base paper needs to be cut to size before printing. Therefore, a series of processes such as paper picking, paper cutting, and paper unloading are required. Among them, the paper unloading process is to neatly stack the cut paper piles together. Common paper unloading machines include: a base module, a paper loading module, and a paper pushing module. When working, the base module serves as the base of the entire equipment and is used to drive the paper loading module and paper pushing module to rise and fall. The paper loading module is used to receive the freshly cut paper and move it to the preset paper unloading point via the paper loading platform. The paper pushing module is used to assist in positioning the paper when the paper enters the paper loading module. In addition, when the paper moves to the preset paper unloading point, the paper pushing module pushes the paper off the paper loading platform.

[0003] A drawback of conventional paper unloaders is that, to facilitate the unloading of paper from the loading platform, most unloading platforms have a sloped front end (e.g., a 45° to 60° wedge). This design leaves the front end of the paper unsupported and suspended in the air. For cardboard, this can be overcome by the cardboard's inherent rigidity. However, for softer cardboard, this can cause bending and sagging, resulting in uneven sides of the stacked paper after unloading. Utility Model Content

[0004] Based on this, the utility model provides a paper unloading machine, which utilizes the flap at the front end of the paper loading platform to form a supporting plane when carrying paper, providing horizontal support for the paper, and guides the paper to slide down by flipping down when unloading the paper, thereby meeting the needs of paper unloading, thereby solving the problem of uneven sides of the paper pile when stacking soft paper.

[0005] A paper unloading machine, comprising:

[0006] Base module;

[0007] The cam is connected to the base module, and the cam is connected to the base module, wherein the cam is provided with a first crossbeam, a paper carrying unit slidably connected to the first crossbeam, and a stop unit connected to the first crossbeam; the paper carrying unit comprises: a paper carrying platform slidably connected to the first crossbeam, a paper carrying driver connected to the paper carrying platform, a flip plate hinged at the front end of the paper carrying platform, a support rod slidably arranged at the bottom of the paper carrying platform, a supporting driver connected to the support rod, a pressure plate installed on the paper carrying platform, and a paper pressing driver connected to the pressure plate; the paper carrying driver is used to drive the paper carrying platform to slide linearly along the first crossbeam; the front end of the support rod abuts the bottom surface of the flip plate to play a supporting role; the supporting driver is used to drive the support rod to move linearly along the movement direction of the paper carrying platform to promote the flip plate to rotate; the stop unit is located at a preset paper unloading position; the paper pressing driver is used to drive the pressure plate to move up and down in a direction perpendicular to the bearing surface of the paper carrying platform; and

[0008] A paper push module connected to the base module.

[0009] Before receiving a sheet of paper, the paper-pushing module moves to the front of the paper platform and stops there. A support rod extends forward, lifting the flap and bringing it into a horizontal position. When receiving a sheet of paper, it enters the paper platform and is positioned by the inner side of the platform and the paper-pushing module. At this point, the front end of the paper is positioned against the flap, and both the platform and the flap are horizontal, providing horizontal support for the bottom surface of the paper. Once the paper is positioned, the pressure plate descends to compress the paper. Next, the paper-pushing module rises to clear the platform and the paper, and the platform transfers the paper to a stopper, where the front end of the paper abuts against the stopper. The pressure plate then rises, and the paper-pushing module descends and moves horizontally to the rear end of the paper. The support rod moves backward, causing the flap to lose its support and flip downward. The platform then moves backward, holding the paper in place due to the blocking action of the paper-pushing module. As the platform gradually moves away, the paper is unloaded along the downward-turning flap to a pre-set unloading location. Through the above design, the flap at the front end of the paper loading platform is used to form a support plane when loading paper, providing horizontal support for the paper. When unloading paper, the paper is guided to slide down by flipping down to meet the needs of paper unloading, thereby solving the problem of uneven sides of the paper pile when stacking soft paper.

[0010] In one embodiment, the base module includes a frame, a lifting platform slidably connected to the frame, a counterweight slidably connected to the frame, and a first lifting actuator connected to the lifting platform. The lifting platform is mounted with a paper loading module and a paper pushing module. The first lifting actuator is used to drive the lifting platform. The counterweight is located on the side of the frame facing away from the lifting platform and is connected to the lifting platform after being deflected by a pulley. The counterweight is used to reduce the load on the first lifting actuator and extend its service life.

[0011] In one embodiment, the paper loading platform is an air-floating platform. The friction coefficient between the air-floating platform and the paper is small, which is conducive to the paper sliding smoothly into and out of the paper loading platform.

[0012] In one embodiment, a limit plate is provided at the bottom of the paper carrier; the limit plate is provided with a position-avoiding hole for the support rod to pass through. The limit plate can limit the movement trajectory of the support rod and can support the support rod.

[0013] In one embodiment, the front end of the support rod is provided with a first roller that abuts against the bottom of the flap. The support rod abuts against the bottom of the flap through the first roller to avoid scratching damage between the support rod and the flap in a rolling contact manner.

[0014] In one embodiment, the stop unit includes a stop slide slidably connected to the first crossbeam, a stop driver connected to the stop slide, and a stop plate mounted on the stop slide. The stop driver is configured to drive the stop slide to slide along the first crossbeam to adjust the position of the stop plate. The stop driver controls the position of the stop plate, thereby enabling the stop plate to be adjusted according to the size of the paper.

[0015] In one embodiment, the paper pushing module includes: a second beam connected to the base module, a paper pushing slide slidably connected to the second beam, a paper pushing driver connected to the paper pushing slide, a back plate slidably connected to the paper pushing slide, a push plate slidably connected to the paper pushing slide, and a second lifting driver respectively connected to the back plate and the push plate; the second lifting driver is used to drive the paper pushing slide to drive the back plate and the push plate to lift and lower.

[0016] In one embodiment, the bottoms of the support plate and push plate are each provided with a second roller; the supporting surface of the paper carrier is provided with a slide groove for the second roller to travel. The second roller can reduce scratches between the support plate and push plate and the supporting surface of the paper carrier, thereby protecting the paper carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional view of a paper unloading machine according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 An exploded view of the paper unloader is shown;

[0019] Figure 3 for Figure 2 A perspective view of a base module in a paper unloader is shown;

[0020] Figure 4 for Figure 2 A perspective view of a paper loading module in a paper unloader is shown;

[0021] Figure 5 for Figure 4 A three-dimensional view of a paper carrying unit in the paper carrying module shown;

[0022] Figure 6 for Figure 5 A three-dimensional view of the paper carrier unit from another perspective;

[0023] Figure 7 for Figure 5 A partial cross-sectional view of the paper carrier unit shown;

[0024] Figure 8 for Figure 7 A partial cross-sectional view of the paper carrying unit shown when unloading paper;

[0025] Figure 9 for Figure 2 A three-dimensional view of a paper pushing module in a paper unloading machine is shown;

[0026] Figure 10 for Figure 9 The paper pushing module is shown in a three-dimensional view after the second crossbeam is hidden;

[0027] Figure 11 for Figure 10 The paper pushing module is shown as a three-dimensional view from another perspective after the second crossbeam is hidden;

[0028] Figure 12 for Figure 10 A partial cross-sectional view of the paper pushing unit is shown.

[0029] The meanings of the reference numerals in the accompanying drawings are:

[0030] 100-paper unloader;

[0031] 10-base module, 11-frame, 12-lifting platform, 13-first lifting drive;

[0032] 20 - paper loading module, 21 - first crossbeam, 22 - paper loading unit, 221 - paper loading platform, 2211 - limit plate, 2212 - photoelectric gate, 2213 - slide, 222 - paper loading driver, 223 - flap, 224 - support rod, 2241 - first roller, 225 - support driver, 226 - pressure plate, 227 - paper pressing driver, 23 - stop unit, 231 - stop slide, 232 - stop driver, 233 - stop plate;

[0033] 30-paper pushing module, 31-second crossbeam, 32-paper pushing slide, 32A-paper pushing driver, 33-support plate, 34-push plate, 35-second lifting driver, 36-second roller;

[0034] 40-Palletizing platform. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 to the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0041] like Figures 1 to 12 As shown, it is a paper unloading machine 100 according to an embodiment of the present invention.

[0042] like Figure 1 and Figure 2 As shown, the paper unloader 100 includes a base module 10, a paper loading module 20 connected to the base module 10, and a paper pushing module 30 connected to the base module 10. The base module 10 is used to drive the lifting and lowering movements of the paper loading module 20 and the paper pushing module 30, and serves as the base of the entire device, providing support and stability. The paper loading module 20 is used to transport paper to a predetermined unloading location. The paper pushing module 30 is used to position the paper and push the paper away from the paper loading module 20 to complete the unloading.

[0043] Below, combined Figures 1 to 12 , the above-mentioned paper unloading machine 100 is further explained.

[0044] like Figure 3As shown, in this embodiment, the base module 10 includes: a frame 11, a lifting platform 12 slidably connected to the frame 11, a counterweight block (not shown) slidably connected to the frame 11, and a first lifting drive 13 connected to the lifting platform 12. The lifting platform 12 is respectively installed with a paper loading module 20 and a paper pushing module 30. The first lifting drive 13 is used to drive the lifting platform 12 to move up and down. The counterweight block is located on the side of the frame 11 away from the lifting platform 12 and is connected to the lifting platform 12 after the pulley is reversed (for example, the counterweight block and the lifting platform 12 are connected by a chain / conveyor belt, and then the pulley is used to achieve reversal). The counterweight block is used to reduce the load of the first lifting drive 13 and extend the service life of the first lifting drive 13.

[0045] Furthermore, in this embodiment, the first lifting driver 13 is a motor and is connected to the lifting platform 12 via a screw rod.

[0046] like Figure 4 As shown, the paper carrying module 20 includes: a first beam 21 connected to the base module 10 , a paper carrying unit 22 slidably connected to the first beam 21 , and a stopping unit 23 connected to the first beam 21 .

[0047] like Figure 5 and Figure 6 As shown, the paper loading unit 22 includes: a paper loading platform 221 slidably connected to the first crossbeam 21, a paper loading driver 222 connected to the paper loading platform 221, a flap 223 hinged to the front end of the paper loading platform 221, a support rod 224 slidably arranged at the bottom of the paper loading platform 221, a support driver 225 connected to the support rod 224, a pressure plate 226 installed on the paper loading platform 221, and a paper pressing driver 227 connected to the pressure plate 226. The paper loading driver 222 is used to drive the paper loading platform 221 to slide linearly along the first crossbeam 21. Figure 7 As shown, the front end of the support rod 224 abuts against the bottom surface of the flip plate 223 to play a supporting role. The support driver 225 is used to drive the support rod 224 to move linearly along the movement direction of the paper carrier 221 to drive the flip plate 223 to rotate.

[0048] Furthermore, in this embodiment, the paper loading driver 222 is a motor and is connected to the paper loading platform 221 via a screw rod. The support driver 225 is a telescopic cylinder.

[0049] In order to reduce the friction coefficient between the paper and the supporting surface of the paper carrier 221, as shown in FIG. Figure 6 As shown, in this embodiment, the paper loading platform 221 is an air-floating platform. The friction coefficient between the air-floating platform and the paper is small, which is conducive to the paper sliding smoothly into and out of the paper loading platform 221.

[0050] In order to transfer the load of the support rod 224, the service life of the support rod 224 is extended. Figure 6As shown, in this embodiment, a limit plate 2211 is provided at the bottom of the paper carrier 221. The limit plate 2211 is provided with a clearance hole for the support rod 224 to pass through. The limit plate 2211 can limit the movement trajectory of the support rod 224 and can also provide support for the support rod 224.

[0051] In addition, in this embodiment, photoelectric gates 2212 for detecting paper are respectively provided on both sides of the limit plate 2211. When the paper carrier 221 moves above the preset paper unloading position, the photoelectric gate 2212 detects the height of the stacked paper below and sends a resident electrical signal to the base module 10, for example, the resident electrical signal is sent to the first lifting driver 13, so that the horizontal height of the paper carrier 221 is controlled above the height of the stacked paper.

[0052] Further, if Figure 6 and Figure 7 As shown, in this embodiment, the front end of the support rod 224 is provided with a first roller that abuts the bottom of the flap 223. The support rod 224 abuts the bottom of the flap 223 through the first roller 2241, thereby preventing scratches and damage between the support rod 224 and the flap 223 in a rolling contact manner.

[0053] like Figure 4 As shown, the stop unit 23 is located at a preset paper unloading location. The paper pressing driver 227 is used to drive the pressure plate 226 to move up and down in a direction perpendicular to the supporting surface of the paper carrier 221. Furthermore, in this embodiment, the stop unit 23 includes: a stop slide 231 slidably connected to the first crossbeam 21, a stop driver 232 connected to the stop slide 231, and a stop plate 233 mounted on the stop slide 231. The stop driver 232 is used to drive the stop slide 231 to slide along the first crossbeam 21 to adjust the position of the stop plate 233. The position of the stop plate 233 is controlled by the stop driver 232, so that the position of the stop plate 233 can be adjusted according to the size of the paper.

[0054] Furthermore, in this embodiment, the stop driver 232 is a motor, and is connected to the stop slide 231 via a screw rod.

[0055] like Figures 9 to 12 As shown, in this embodiment, the paper pushing module 30 includes: a second crossbeam 31 connected to the base module 10, a paper pushing slide 32 slidably connected to the second crossbeam 31, a paper pushing driver 32A connected to the paper pushing slide 32, a support plate 33 slidably connected to the paper pushing slide 32, a push plate 34 slidably connected to the paper pushing slide 32, and a second lifting driver 35 respectively connected to the support plate 33 and the push plate 34. The second lifting driver 35 is used to drive the paper pushing slide 32 to move, thereby driving the support plate 33 and the push plate 34 to move up and down.

[0056] Furthermore, in this embodiment, the second crossbeam 31 is disposed above the first crossbeam 21 in parallel, and both are synchronously lifted and lowered by the base module 10. The second lifting actuator 35 is a telescopic cylinder.

[0057] In order to prevent the push plate 34 and the support plate 33 from scratching the supporting surface of the paper carrier 221, as shown in FIG. Figure 11 As shown in FIG. 1 , in this embodiment, the bottom of the support plate 33 and the push plate 34 are both provided with a second roller. Figure 5 As shown, the bearing surface of the paper carrier 221 is provided with a slide groove 2213 for the second roller to travel. The second roller can reduce the scratching between the support plate 33 and the push plate 34 and the bearing surface of the paper carrier 221, thereby protecting the paper carrier 221.

[0058] Brief description of working principle:

[0059] like Figure 1 As shown, before receiving a sheet of paper, the paper pushing module 30 moves to the front end of the paper loading platform 221 and stops there. The support rod 224 extends forward to lift the flap 223, bringing it into a horizontal position. When receiving a sheet of paper, after entering the paper loading platform 221, it is positioned by the inner side of the paper loading platform 221 and the paper pushing module 30. At this point, the front end of the paper is located on the flap 223, and the paper loading platform 221 and the flap 223 are both horizontal, so the bottom surface of the paper is supported horizontally. Once the paper is positioned, the pressure plate 226 descends to press the paper firmly.

[0060] Next, the paper pushing module 30 is lifted to avoid the paper loading platform 221 and the paper. The paper loading platform 221 moves the paper to the stopper unit 23 , and the front end of the paper abuts against the stopper unit 23 .

[0061] Then, the paper pressing board is lifted, and the paper pushing module 30 is lowered and moved horizontally to the rear end of the paper. Figure 8 As shown, the support rod 224 moves backward, and the flap 223 loses its supporting force and flips downward.

[0062] Then, the paper carrier 221 moves backward, and the paper stays in place under the blocking effect of the paper pushing module 30. As the paper carrier 221 gradually leaves, the paper is unloaded along the downward turning plate 223 to a preset paper unloading location (for example, Figure 1 The palletizing station 40 shown).

[0063] The above-mentioned paper unloader 100 uses the flap 223 at the front end of the paper loading platform 221 to form a support plane when loading paper, providing horizontal support for the paper. When unloading paper, the paper is guided to slide down by flipping down to meet the needs of paper unloading, thereby solving the problem of uneven sides of the paper pile when stacking soft paper.

[0064] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A paper unloading machine, characterized in that: include: Base module; A paper carrier module connected to the base module; The lifting mechanism is a bottom of the lifting mechanism, and the lifting mechanism is a bottom of the lifting mechanism, and the lifting mechanism is a bottom of the lifting mechanism, and the lifting mechanism is a bottom of the lifting mechanism. A paper pushing module is connected to the base module.

2. The paper unloading machine according to claim 1, characterized in that: The base module includes: a frame, a lifting platform slidably connected to the frame, a counterweight block slidably connected to the frame, and a first lifting drive connected to the lifting platform; the lifting platform is respectively installed with the paper loading module and the paper pushing module; the first lifting drive is used to drive the lifting platform to move up and down; the counterweight block is located on the side of the frame away from the lifting platform and is connected to the lifting platform after being reversed by a pulley.

3. The paper unloading machine according to claim 1, characterized in that: The paper carrier is an air floating platform.

4. The paper unloading machine according to claim 1, characterized in that: A limiting plate is provided at the bottom of the paper carrier; the limiting plate is provided with a avoiding hole for the support rod to pass through.

5. The paper unloading machine according to claim 1, characterized in that: The front end of the support rod is provided with a first roller abutting against the bottom of the flap.

6. The paper unloading machine according to claim 1, characterized in that: The stop unit includes: a stop slide slidably connected to the first beam, a stop driver connected to the stop slide, and a stop plate installed on the stop slide; the stop driver is used to drive the stop slide to slide along the first beam to adjust the position of the stop plate.

7. The paper unloading machine according to claim 1, characterized in that: The paper pushing module includes: a second crossbeam connected to the base module, a paper pushing slide slidably connected to the second crossbeam, a paper pushing driver connected to the paper pushing slide, a back plate slidably connected to the paper pushing slide, a push plate slidably connected to the paper pushing slide, and a second lifting driver respectively connected to the back plate and the push plate; the second lifting driver is used to drive the paper pushing slide to move so as to drive the back plate and the push plate to move up and down.

8. The paper unloading machine according to claim 7, characterized in that: The bottoms of the supporting plate and the pushing plate are both provided with second rollers; and the bearing surface of the paper carrier is provided with a sliding groove for the second rollers to travel.

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