A cylindrical automatic flap device

Abstract

The present invention discloses a cylindrical automatic turning device, comprising: a cylindrical frame, a roller conveyor installed on the cylindrical frame for horizontally conveying plates, a pressing mechanism arranged on the roller conveyor for fixing the plates to prevent the plates from shifting, and a rotating motor for driving the cylindrical frame to rotate. The roller conveyor includes two conveying rollers arranged oppositely in upper and lower layers and driven in the same direction and at the same speed. The plates from the upstream of the production line enter the lower conveying roller of the roller conveyor and are driven on the lower conveying roller. The pressing mechanism extends to press the plates. The cylindrical frame rotates under the drive of the rotating motor and drives the roller conveyor to rotate. After completing a turning cycle, it stops. The positions of the two conveying rollers of the roller conveyor are turned up and down and then stop. The pressing mechanism retracts, and the plates fall onto the lower conveying roller and continue to be driven forward along the production line direction.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum board production, and particularly to a gypsum board turning device. Background Art

[0002] Gypsum board is a material mainly made of building gypsum. It is a building material with light weight, relatively high strength, thin thickness, convenient processing, and good sound insulation, heat insulation and fire prevention properties. It is one of the new lightweight boards that are currently being focused on for development. At present, consumers have higher requirements for the decorative performance of gypsum boards. Therefore, during the production process of gypsum boards, the decorative surface of the gypsum board needs to be processed. Usually, the method adopted is to lay a composite film on the decorative surface of the gypsum board.

[0003] However, the current gypsum board production line is difficult to ensure that the gypsum board enters the production line with the decorative surface facing up to complete the laying of the composite film. It is necessary to use a turning mechanism to turn the gypsum board with the decorative surface facing down to the decorative surface facing up. Currently, the commonly used method is to convey the gypsum board to a specified position at one end of the turning fork through a conveyor belt, stop, and drive the turning fork to perform a "V"-shaped turning action through a motor and a connecting rod. After turning, the gypsum board falls onto the conveyor belt at the other end of the turning fork. This turning method has a long running time and low turning efficiency. There have also been attempts to turn the gypsum board through a turning device, but there are still some problems. For example, the hardness of the gypsum board is relatively poor, and the turning device may damage the surface of the gypsum board during the turning process, resulting in an increase in the amount of waste. The gypsum board may shift during the turning process, resulting in a position deviation between the turned gypsum board and the subsequent production line, which brings difficulties to the processing of the gypsum board. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a cylindrical automatic turning device. The gypsum board sheets turned by the cylindrical automatic turning device provided by the present invention will not shift and can smoothly enter the subsequent production process.

[0005] According to one aspect of the present invention, a cylindrical automatic turning device is provided, including: a cylindrical frame, a roller conveyor installed on the cylindrical frame for horizontally conveying sheets, a pressing mechanism arranged on the roller conveyor for fixing the sheets to prevent the sheets from shifting, and a rotating motor for driving the cylindrical frame to rotate. The roller conveyor includes two conveying rollers arranged oppositely in the upper and lower layers and driven in the same direction and at the same speed. The sheets from the upstream of the production line enter the lower conveying roller of the roller conveyor and are conveyed on the lower conveying roller. The pressing mechanism extends to press the sheets. The cylindrical frame rotates under the drive of the rotating motor and drives the roller conveyor to rotate. After completing a turning cycle, it stops. The positions of the two conveying rollers of the roller conveyor are turned up and down and then stop. The pressing mechanism retracts, and the sheets fall onto the lower conveying roller and continue to be conveyed forward along the production line direction.

[0006] Optionally, the cylindrical frame rotates 180 degrees for one flipping cycle.

[0007] Optionally, the pressing mechanism includes pressing cylinders disposed on the conveying rollers and pressure regulating valves for controlling the pressure of the pressing cylinders. At least one pressing mechanism is provided on each conveying roller. When the sheet enters the lower conveying rollers of the roller conveyor, the pressing mechanism of the upper conveying rollers is activated, and the pressing cylinders extend to press the sheet to prevent the sheet from shifting during the flipping process. After the cylindrical frame finishes flipping, the extended pressing cylinders retract.

[0008] Optionally, at least one fixed support plate is further provided on each conveying roller. The fixed support plates are disposed at positions corresponding to the pressing cylinders of the opposite conveying rollers. When the pressing cylinders extend, they jointly clamp the sheet with the fixed support plates of the opposite conveying rollers.

[0009] Optionally, it further includes a counting sensor disposed on the roller conveyor. The counting sensor is used to detect the number of times the roller conveyor conveys the sheets, and the turning device flips once every other sheet.

[0010] Optionally, it further includes a photoelectric positioning switch disposed on the roller conveyor and a brake motor for controlling the roller conveyor. When the photoelectric positioning switch detects that the tail of the sheet material enters the roller conveyor, the brake motor is activated, the roller conveyor stops running, the turning device completes the turning, the sheet falls onto the lower conveying rollers, and the roller conveyor starts running forward again.

[0011] Optionally, an electromagnetic powder brake mechanism for controlling the rotation angle of the cylindrical frame is provided on the cylinder of the cylindrical frame. When the electromagnetic powder brake mechanism detects that the rotation angle of the cylindrical frame reaches 180 degrees, the electromagnetic powder brake mechanism is activated, and the cylindrical frame stops rotating, completing one flipping.

[0012] Optionally, the pressing cylinders are provided with polyurethane protective layers, the fixed support plates are polyurethane support plates, and the fixed support plates are square.

[0013] Optionally, the cylindrical frame includes: a support base, annular drive plates disposed at both ends of the support base, a rotating shaft for supporting the rotation of the frame, and a drive chain for driving the annular drive plates to rotate. The drive chain is drivingly connected to the brake motor, and the drive chain drives the annular drive plates to rotate under the drive of the brake motor.

[0014] Optionally, the distance between the upper conveying rollers and the lower conveying rollers is 50 - 65 mm.

[0015] The cylindrical automatic flap device provided by the present invention eliminates the position deviation that occurs after flipping due to the inertial movement of the sheet during the flipping process. The brake motor, drive chain, and electromagnetic powder brake mechanism cooperate with each other, and the cylindrical frame rotates 180 degrees and then stops rotating precisely, avoiding the problem that the conveying roller tilts and is inconsistent with the horizontal direction of the subsequent production line after stopping.

[0016] The pressure applied by the pressing cylinder of the cylindrical automatic flap device of the present invention to the sheet can be adjusted, avoiding damage to the sheet when the applied pressure is too large, and the sheet will shift in position and deviate when the pressure is too small. When the pressing mechanism presses the sheet, it cooperates with the fixed support plate of the opposite conveying roller, and the sheet surface is stressed when pressing the sheet, reducing the waste rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is the front view of the cylindrical automatic flap device in the embodiment of the present invention;

[0019] Figure 2 is the side view of the cylindrical automatic flap device in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments in the present application and the feature vectors in the embodiments can be combined with each other arbitrarily.

[0021] As Figure 1 、 2 shown, a cylindrical automatic flap device includes: a cylindrical frame 01, a roller conveyor 02 installed on the cylindrical frame 01 for horizontally conveying sheets, a pressing mechanism 03 provided on the roller conveyor 02 for fixing the sheets to prevent the sheets from shifting, a photoelectric positioning switch 04 provided on the roller conveyor 02, a brake motor 07 for controlling the roller conveyor 02, and a rotating motor 06 for driving the rotation of the cylindrical frame 01. Among them, the cylindrical frame 01 rotates 180 degrees as a flipping cycle, and the time to complete one flipping cycle is 100 - 150 seconds.

[0022] As Figure 2As shown in the figure, the cylindrical frame 01 includes a support base 011, two circular drive plates 012 arranged at both ends of the support base 011, and a rotating shaft 013 for supporting the rotation of the frame. A drive chain 014 connected to the rotating motor 06 is provided on each circular drive plate 012. Driven by the rotating motor 06, the drive chain 014 drives the circular drive plate 012 to rotate. An electromagnetic powder brake mechanism 05 for controlling the rotation angle of the cylindrical frame 01 is provided on the cylinder of the cylindrical frame 01. When the electromagnetic powder brake mechanism 05 detects that the rotation angle of the cylindrical frame 01 reaches 180 degrees, the electromagnetic powder brake mechanism 05 is activated and the cylindrical frame 01 stops rotating.

[0023] As Figure 2 shown in the figure, the roller conveyor 02 includes two conveying rollers 021 arranged in two layers opposite to each other and driven in the same direction and at the same speed. The plates from the upstream of the production line enter the lower conveying roller of the roller conveyor 02 and are conveyed on the lower conveying roller. At least one pressing mechanism 03 and at least one fixed support plate 08 are provided on each conveying roller 021. The pressing mechanism 03 includes a pressing cylinder 032 provided on the conveying roller 021 and a pressure regulating valve 033 for controlling the pressure of the pressing cylinder 032. The fixed support plate 08 is arranged at the position corresponding to the pressing cylinder 032 of the opposite conveying roller 021. The pressure regulating valve 033 is used to adjust the pressure exerted by the pressing cylinder 032 on the plate, to avoid damage to the plate due to excessive pressure, and to avoid displacement and deviation of the plate due to too small pressure. Preferably, a polyurethane protective layer 034 with a thickness of 20 - 30 mm is provided on each pressing cylinder 032 to avoid damage to the plate due to the large hardness of the pressing cylinder 033. When the plate enters the lower conveying roller of the roller conveyor 02, the pressing mechanism 03 of the upper conveying roller is activated, and the pressing cylinder 032 extends to clamp the plate together with the fixed support plate 08 of the lower conveying roller to prevent the plate from shifting during the flipping process. After the cylindrical frame 01 finishes flipping, the upper conveying roller flips to become the lower conveying roller, and the pressing cylinder 03 that extends from the lower conveying roller slowly retracts to move the plate onto the lower conveying roller.

[0024] Preferably, two fixed support plates 08 are provided on each conveying roller 021. The fixed support plate 08 of the lower conveying roller is arranged below the pressing cylinder of the upper conveying roller, and the pressing cylinder of the lower conveying roller is arranged below the fixed support plate of the upper conveying roller. The distance between the upper conveying roller and the lower conveying roller is 50 - 65 mm. Preferably, the distance between the upper conveying roller and the lower conveying roller is 60 mm.

[0025] Preferably, the fixed support plate 08 is a polyurethane support plate, which can avoid damaging the surface of the plate during the flipping process under this condition. Preferably, the fixed support plate 08 is square. Under this condition, the contact area between the fixed support plate 08 and the plate surface is larger, and when the fixed support plate 08 and the pressing cylinder 032 clamp the plate together, the force received by the plate is more dispersed.

[0026] For the cylindrical automatic turning device of the present invention, the sheet material enters the lower conveying rollers of the roller conveyor 02. When the photoelectric positioning switch 04 on the roller conveyor 02 detects that the tail of the sheet material enters the roller conveyor 02, the brake motor 07 is started, and the roller conveyor 02 stops running. The pressing mechanism 03 presses the sheet material to prevent the sheet material from shifting. The rotating motor 06 drives the transmission chain 014 to drive the circular transmission plate 011 to rotate. When the proximity switch detects the limit rod, it proves that the rotation angle of the cylindrical frame reaches 180 degrees. The rotating motor 06 stops running and the electromagnetic powder brake mechanism 05 is immediately started to accurately and stably stop the cylindrical frame 01. One turning cycle is completed. After the turning device finishes turning, the pressing mechanism 03 retracts, and the sheet material falls onto the lower conveying roller 021 below. The brake motor 07 drives the roller conveyor 02 to start running forward again.

[0027] As a variable embodiment, a color sensor is provided on the roller conveyor 02. The color sensor is used to detect the surface color of the conveyed sheet material, and identify it according to the color difference between the decorative surface and the non-decorative surface of the gypsum board. The color sensor emits light (red, green, blue) on the object to be inspected, calculates the color components according to the reflected light, and then compares them with the stored reference color values. If the color value meets the set color band range, a switch output will be enabled. Thus, the intermittent turning is controlled according to the color recognition.

[0028] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the presence of additional identical elements in the article or device including the said elements.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. The present invention has only been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all should be covered within the scope of the claims of the present invention.

Claims

1. A cylindrical automatic turning plate device for turning a gypsum board with its decorative surface facing down to a state where the decorative surface faces up. It is characterized in that it includes: A cylindrical frame (01), a roller conveyor (02) installed on the cylindrical frame (01) for horizontally conveying plates, a pressing mechanism (03) arranged on the roller conveyor (02) for fixing the plates to prevent them from shifting, and a rotating motor (06) for driving the cylindrical frame (01) to rotate. The roller conveyor (02) includes two conveying rollers (021) arranged oppositely in the upper and lower layers and driven in the same direction and at the same speed. The plates from the upstream of the production line enter the lower conveying roller (021) of the roller conveyor (02) and are driven on the lower conveying roller (021). The pressing mechanism (03) extends to press the plates. The cylindrical frame (01) rotates driven by the rotating motor (06) and drives the roller conveyor (02) to rotate. After completing a turning cycle, it stops. The positions of the two conveying rollers (021) of the roller conveyor (02) are turned up and down and then stop. The pressing mechanism (03) retracts, and the plates fall onto the lower conveying roller (021) and continue to be driven forward along the production line direction. The pressing mechanism (03) includes a pressing cylinder (032) arranged on the conveying roller (021); at least one fixed support plate (08) is further arranged on each conveying roller (021), and the fixed support plate (08) is arranged at the position corresponding to the pressing cylinder (032) of the opposite conveying roller (021). When the pressing cylinder (032) extends, it clamps the plates together with the fixed support plate (08) of the opposite conveying roller (021). A polyurethane protective layer (034) is provided on the pressing cylinder (032), and the fixed support plate (08) is a polyurethane support plate. A color sensor is arranged on the roller conveyor (02), and the color sensor is used to detect the color of the plate surface, identify according to the color difference between the decorative surface and the non - decorative surface of the gypsum board; control the intermittent turning according to the color identification. An electromagnetic powder brake mechanism (05) for controlling the rotation angle of the cylindrical frame (01) is arranged on the cylindrical frame (01). When the electromagnetic powder brake mechanism (05) detects that the rotation angle of the cylindrical frame reaches 180 degrees, the electromagnetic powder brake mechanism (05) starts, and the cylindrical frame (01) stops rotating, completing one turning.

2. The cylindrical automatic turning plate device according to claim 1, It is characterized in that One turning cycle is that the cylindrical frame (01) rotates 180 degrees.

3. The cylindrical automatic turning plate device according to claim 1, It is characterized in that The pressing mechanism (03) includes a pressure regulating valve (033) for controlling the pressure of the pressing cylinder (032). At least one pressing mechanism (03) is provided on each conveying roller (021). When the sheet material enters the lower conveying roller (021) of the roller conveyor (02), the pressing mechanism (03) of the upper conveying roller (021) is activated, and the pressing cylinder (032) extends to press the sheet material to prevent the sheet material from shifting during the flipping process. After the cylindrical frame (01) finishes flipping, the extended pressing cylinder (032) retracts.

4. The cylindrical automatic turning device according to claim 1, characterized in that, it further includes a photoelectric positioning switch (04) provided on the roller conveyor (02) and a brake motor (07) for controlling the roller conveyor (02). When the photoelectric positioning switch (04) detects that the tail of the sheet material enters the roller conveyor (02), the brake motor (07) is activated, the roller conveyor (02) stops running, the turning device finishes turning, the sheet material falls onto the lower conveying roller (021), and the roller conveyor (02) starts running forward again.

5. The cylindrical automatic turning device according to claim 4, characterized in that, the fixed support plate is square.

6. The cylindrical automatic turning device according to claim 5, characterized in that, the cylindrical frame (01) includes: a support base (011), annular drive plates (012) provided at both ends of the support base (011), a rotating shaft (013) for supporting the rotation of the frame, and a drive chain (014) for driving the annular drive plates (012) to rotate. The drive chain (014) is drivingly connected to the brake motor (07), and under the drive of the brake motor (07), the drive chain (014) drives the annular drive plates (012) to rotate.

7. The cylindrical automatic turning device according to claim 1, characterized in that, the distance between the upper conveying roller (021) and the lower conveying roller (021) is 50 - 65 millimeters.

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