Paperboard anti-warping device

Abstract

A paperboard anti-warping device relates to the field of machinery and comprises a lower frame, an upper support frame is mounted on the lower frame, a slider is in sliding fit with the upper support frame, a vertical lifting mechanism is mounted on the slider and connected with a lower pressing plate, and an extension mechanism is arranged in the lower pressing plate. According to the device, through the synergistic effect of all the parts, the problem that paperboards are bent and warped can be effectively solved, and the flatness and the quality stability of the paperboards are improved. By adjusting the positions of the sliding blocks and fastening the rotary knobs, the device can flexibly adapt to paperboards of different sizes and shapes. Through the synergistic effect of the vertical lifting mechanism and the extension mechanism, the bent part of the paperboard can be accurately positioned and flattened.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a cardboard anti-bending and warping device. Background Art

[0002] In the production process of corrugated cardboard, the problem of cardboard warping is particularly prominent. This problem is not only caused by various factors in the production process, but also closely related to the environmental humidity. Even if the cardboard remains flat in the early stage of production, it is easy to warp due to changes in environmental humidity after a period of storage. This warping phenomenon causes great trouble to the subsequent production process.

[0003] When warped cardboard enters the forming machine, it is likely to cause the machine to jam, resulting in a production line shutdown. Such shutdowns not only affect production efficiency, but may also damage key components such as the paper feeding mechanism. Each shutdown for maintenance and component replacement means additional cost expenditures. In addition to the cost of downtime, the loss of raw materials is another cost increase that cannot be ignored. Warped cardboard often cannot be used normally, resulting in a large amount of raw material waste. All of these have invisibly increased the production costs of enterprises and compressed profit margins.

[0004] Chinese patent CN217258790U discloses a pressing device for preventing cardboard from debonding and warping after tile mounting. The rolling roller of the device is in frictional contact with the cardboard after tile mounting. In this design, the cardboard after mounting is relatively wet. When the rolling roller first contacts the cardboard, the connecting rod applies a large force to the cardboard, which is easy to cause extrusion and damage to the cardboard. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a cardboard anti-bending and warping device.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A cardboard anti-bending and warping device comprises a lower frame, an upper supporting frame is installed on the lower frame, a slider is slidably matched on the upper supporting frame, a vertical lifting mechanism is installed on the slider, the vertical lifting mechanism is connected to a lower pressing plate, and an extension mechanism is arranged inside the lower pressing plate.

[0008] Furthermore, the upper support frame includes a top plate, a slide groove is provided on the top plate, a slider is slidably fitted in the slide groove, and a plurality of support rods are provided between the top plate and the workbench.

[0009] Furthermore, a tightening knob is threadedly connected to the slider, and the tightening knob can enable the slider to move along the slide groove and be positioned at a point on the slide groove.

[0010] Furthermore, the vertical lifting mechanism is a vertical lifting electric cylinder.

[0011] Furthermore, the extension mechanism includes a first electric cylinder and a second electric cylinder, a center groove is opened on the top of the lower pressure plate, a threaded hole is arranged on the top of the center groove, a left sliding groove and a right sliding groove are respectively arranged on both sides of the threaded hole, a left extension plate is slidably fitted in the left sliding groove, and a right extension plate is slidably fitted in the right sliding groove, the first electric cylinder and the second electric cylinder are installed in the center groove, the telescopic rod of the first electric cylinder is connected to the left extension plate, and the telescopic rod of the second electric cylinder is connected to the right extension plate.

[0012] Furthermore, the extension mechanism includes a first rack, a second rack, a gear and a driving motor. A sliding groove is provided at the bottom of the lower pressure plate, and the first rack and the second rack are slidably fitted on both sides of the sliding groove. A driving motor is provided in the middle of the lower pressure plate, and the output shaft of the driving motor is connected to the gear after passing through the lower pressure plate. The gear is meshed with the first rack and the second rack. The first rack is connected to the first extension plate, and the second rack is connected to the second extension plate.

[0013] Furthermore, the lower frame includes a workbench, and a plurality of legs are provided at the bottom of the workbench.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the device can effectively solve the problem of cardboard bending and warping through the coordinated action of various parts such as the lower frame, the upper support frame, the slider, the vertical lifting mechanism and the extension mechanism, and improve the flatness and quality stability of the cardboard. By adjusting the position of the slider and the tightening knob, it can flexibly adapt to cardboards of different sizes and shapes. The coordinated action of the vertical lifting mechanism and the extension mechanism can accurately locate and flatten the bent and warped part of the cardboard. At the same time, the device adopts an electric drive mode, which is simple and convenient to operate and improves work efficiency. The processed cardboard has high flatness and stable quality, which is conducive to subsequent processing and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 A top view of a first embodiment of an extension mechanism;

[0017] Figure 3 It is a left side view of the first embodiment of the extension mechanism;

[0018] Figure 4 It is a partial cross-sectional view of a second embodiment of the extension mechanism;

[0019] Figure 5 It is a left side view of the second embodiment of the extension mechanism;

[0020] Among them: 1 lower frame, 11 workbench, 12 legs, 2 upper support frame, 21 top plate, 22 support rod, 31 slider, 32 tightening knob, 4 vertical lifting mechanism, 5 lower pressure plate, 51 center groove, 52 threaded hole, 53 first electric cylinder, 54 second electric cylinder, 55 left sliding groove, 56 right sliding groove, 57 left extension plate, 58 right extension plate, 59 gear, 510 first rack, 511 second rack, 512 first extension plate, 513 second extension plate, 514 drive motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0022] like Figure 1-Figure 3 As shown, a cardboard anti-bending and warping device includes a lower frame 1, which is the basic part of the cardboard anti-bending and warping device, an upper support frame 2 is installed on the lower frame, a slider 31 is slidably fitted on the upper support frame, a vertical lifting mechanism 4 is installed on the slider, the vertical lifting mechanism is connected to a lower pressure plate 5, and an extension mechanism is arranged inside the lower pressure plate.

[0023] In at least one embodiment, the lower frame includes a workbench 11, which is used to place the cardboard to be processed. The bottom of the workbench is provided with a plurality of legs 12, which provide stable support to ensure the stability of the device during operation. The design of the lower frame enables the device to adapt to production lines of different heights, thereby improving the versatility and flexibility of the device.

[0024] In at least one embodiment, the upper support frame includes a top plate 21, a slide groove is provided on the top plate, a slider is slidably fitted in the slide groove, and a plurality of support rods 22 are provided between the top plate and the workbench. This design allows the lower pressing plate to move left and right to adapt to cardboards of different widths.

[0025] Furthermore, a tightening knob 32 is threadedly connected to the slider, and the tightening knob can enable the slider to move along the slide groove and be positioned at a point on the slide groove.

[0026] In at least one embodiment, the vertical lifting mechanism is a vertical lifting electric cylinder. By controlling the extension and contraction of the electric cylinder, the lifting height and speed of the lower pressing plate can be accurately controlled. This design enables the device to adapt to cardboards of different thicknesses and ensures that the lower pressing plate has appropriate pressure when contacting the cardboard, avoiding damage to the cardboard due to excessive or insufficient pressure.

[0027] In at least one embodiment, Figure 2 and Figure 3 As shown, the extension mechanism is the core part of the cardboard anti-bending and warping device, which is used to flatten the warped part of the cardboard. The extension mechanism includes a first electric cylinder 53 and a second electric cylinder 54, which are matched with a center groove 51 on the top of the lower pressure plate, and a threaded hole 52 on the top of the center groove, wherein a threaded rod of a vertical lifting electric cylinder can be threadedly connected in the threaded hole, and a left sliding groove 55 and a right sliding groove 56 are respectively provided on both sides of the threaded hole, and a left extension plate 57 is slidably matched in the left sliding groove, and a right extension plate 58 is slidably matched in the right sliding groove. The first electric cylinder 53 and the second electric cylinder 54 are installed in the center groove, and the telescopic rod of the first electric cylinder is connected to the left extension plate, and the telescopic rod of the second electric cylinder is connected to the right extension plate.

[0028] In at least one embodiment, Figure 4 and Figure 5 As shown, the extension mechanism includes a first rack 510, a second rack 511, a gear 59 and a driving motor 514. A sliding groove is provided at the bottom of the lower pressure plate, and the first rack and the second rack are slidably matched on both sides of the sliding groove. A driving motor is provided in the middle of the lower pressure plate, and the output shaft of the driving motor is connected to a gear after passing through the lower pressure plate. The gear is meshed with the first rack and the second rack. The first rack is connected to the first extension plate 512, and the second rack is connected to the second extension plate 513.

[0029] Both designs can effectively flatten the warped parts of the cardboard, improving the flatness and quality stability of the cardboard.

[0030] Because cardboard is usually warped at the edges, the vertical lifting mechanism can press the lower pressure plate down close to the cardboard, and then the extension mechanism is activated to move the corresponding extension plate in the horizontal direction so that the warped part of the cardboard can be flattened, and then the vertical lifting mechanism continues to press down a certain distance, so that the warped part of the cardboard is continuously pressed down and flattened.

[0031] The steps for using this device are as follows:

[0032] 1. Place the cardboard to be processed on the workbench and make sure it is flat.

[0033] 2. According to the size and bend position of the cardboard, adjust the position of the slider in the slide slot and fix it by tightening the knob to determine the left and right position of the lower pressure plate.

[0034] 3. Start the vertical lifting electric cylinder to make the lower pressure plate descend and gradually approach the bent part of the cardboard.

[0035] 4. When the lower pressing plate approaches the warped part of the cardboard, the extension mechanism is activated. Depending on the embodiment, the extension mechanism has two possible working modes:

[0036] a. In the first embodiment, the first electric cylinder and the second electric cylinder are started to push the left extension plate and the right extension plate to slide in the left sliding groove and the right sliding groove respectively, thereby flattening the warped part of the cardboard in the horizontal direction.

[0037] b. In the second embodiment, the driving motor is started to drive the gear to rotate. Due to the meshing relationship between the gear and the first rack and the second rack, the first rack and the second rack move toward or away from each other in the sliding groove, thereby driving the first extension plate and the second extension plate to move and flatten the warped part of the cardboard.

[0038] 5. After the extension mechanism is completed, the vertical lifting electric cylinder continues to press down a certain distance to ensure that the bent part of the cardboard continues to be flattened.

[0039] 6. After the processing is completed, first lift the lower pressure plate, then turn off the electric cylinders and drive motors, and remove the processed cardboard from the workbench.

[0040] It should be noted that before use, ensure that all parts of the cardboard anti-bending and warping device are intact, and that the electrical equipment such as the electric cylinder and drive motor are correctly wired and grounded. According to the thickness and material of the cardboard, appropriately adjust the downward pressure of the vertical lifting electric cylinder and the flattening force of the extension mechanism to avoid damage to the cardboard due to excessive force. During use, pay attention to the flattening of the bent and warped part of the cardboard. If necessary, adjust the parameters such as the position of the slider, downward pressure and flattening force in time. Regularly maintain the cardboard anti-bending and warping device, such as cleaning the work surface, checking whether the wiring of the electrical equipment is loose, and adding lubricating oil to each sliding part, to ensure the normal use of the device and extend its service life.

[0041] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cardboard anti-bending device, characterized in that: It comprises a lower frame, an upper support frame is installed on the lower frame, a slider is slidably matched on the upper support frame, a vertical lifting mechanism is installed on the slider, the vertical lifting mechanism is connected with a lower pressing plate, and an extension mechanism is arranged inside the lower pressing plate.

2. A cardboard anti-bending and warping device according to claim 1, characterized in that: The upper support frame comprises a top plate, a slide groove is arranged on the top plate, a slider is slidably fitted in the slide groove, and a plurality of support rods are arranged between the top plate and the workbench.

3. The cardboard anti-bending device according to claim 2, characterized in that: The slider is threadedly connected with a tightening knob, and the tightening knob can enable the slider to move along the slide slot and be positioned at a point on the slide slot.

4. The cardboard anti-bending and warping device according to claim 1, characterized in that: The vertical lifting mechanism is a vertical lifting electric cylinder.

5. A cardboard anti-bending and warping device according to any one of claims 1 to 4, characterized in that: The extension mechanism includes a first electric cylinder and a second electric cylinder, a center groove is opened on the top of the lower pressure plate, a threaded hole is arranged on the top of the center groove, a left sliding groove and a right sliding groove are respectively arranged on both sides of the threaded hole, a left extension plate is slidably fitted in the left sliding groove, and a right extension plate is slidably fitted in the right sliding groove, the first electric cylinder and the second electric cylinder are installed in the center groove, the telescopic rod of the first electric cylinder is connected to the left extension plate, and the telescopic rod of the second electric cylinder is connected to the right extension plate.

6. A cardboard anti-bending and warping device according to any one of claims 1 to 4, characterized in that: The extension mechanism includes a first rack, a second rack, a gear and a driving motor. A sliding groove is provided at the bottom of the lower pressure plate, and the first rack and the second rack are slidably matched on both sides of the sliding groove. A driving motor is provided in the middle of the lower pressure plate. The output shaft of the driving motor passes through the lower pressure plate and is connected to a gear. The gear is meshed with the first rack and the second rack. The first rack is connected to the first extension plate, and the second rack is connected to the second extension plate.

7. The cardboard anti-bending and warping device according to claim 1, characterized in that: The lower frame comprises a workbench, and a plurality of supporting legs are arranged at the bottom of the workbench.

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