A turnover mechanism

Abstract

The application discloses a turnover mechanism, which comprises a frame, a bottom plate arranged on the frame, a turnover plate capable of being turned over forward and backward and rotatably connected to the bottom plate, and a guide wheel arranged on the left side or the right side of the middle part or the upper part of the turnover plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turnover device, in particular to a turnover mechanism. BACKGROUND

[0002] The turnover device is a commonly used device in production line. In the existing turnover device, some turnover devices with large turning angle (such as 180 degree turnover) usually need to be driven by motor, and many position sensors are also needed, and the structure is usually complex and the cost is high.

[0003] In addition, the turnover process of the material (such as cover and plate material) usually needs to go through the following steps: first, the material is placed on the turnover device, then the clamping structure on the turnover device clamps the material, then the turnover device turns over the material, and finally the clamping structure on the turnover device releases the material and puts down the material. Most of the existing turnover devices need at least two independent driving devices to drive the clamping and positioning of the material and the turnover of the material respectively, so the structure is more complex, the cost is higher, the control is more difficult, and the turnover speed is limited.

[0004] The present application is made on the basis of this situation. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art, and provides a turnover mechanism with simple structure, low cost and fast turnover speed.

[0006] The present application is realized by the following technical scheme:

[0007] In order to solve the above technical problems, the present application provides a turnover mechanism, which comprises a rack, a bottom plate is arranged on the rack, a turnover plate capable of turning forward and backward is rotatably connected to the bottom plate, and the lower part of the turnover plate is rotatably connected to the middle part of the bottom plate, guide wheels are arranged on the left and right sides of the middle part or the upper part of the turnover plate, a swing arm is further arranged on the rack, and the middle part of the swing arm is rotatably connected to the rack, a U-shaped fork is arranged on the upper part of the swing arm, the U-shaped fork is forked on the guide wheels from bottom to top, and a driving structure for driving the lower part of the swing arm to swing forward and backward is arranged between the lower part of the swing arm and the rack.

[0008] In order to further solve the technical problems to be solved by the present application, in a turnover mechanism provided by the present application, the driving structure comprises a linear driver rotatably connected to the rack, and the output end of the linear driver is rotatably connected to the lower part of the swing arm.

[0009] In order to further solve the technical problems to be solved by the present application, in a turnover mechanism provided by the present application, a placing groove for placing the material and a fixing structure for clamping the material in the placing groove are arranged on the turnover plate.

[0010] In order to further solve the technical problems to be solved by the present application, the fixing structure comprises a sliding pressing block capable of extending into the placing groove and elastically pressing onto the material.

[0011] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0012] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0013] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0014] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0015] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0016] In order to further solve the technical problems to be solved by the present application, the sliding pressing block is slidably connected in the sliding groove and capable of extending into the placing groove through the side wall of the placing groove.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. In this invention, the swinging motion of the swing arm is converted into the flipping motion of the flipping plate, resulting in a simple structure and high efficiency. More specifically, the drive structure drives the lower part of the swing arm to swing back and forth, causing the upper part of the swing arm to swing back and forth as well. The U-shaped fork at the upper part of the swing arm is fitted onto a guide wheel, which can rotate within the U-shaped fork and move along its side wall. When the upper part of the swing arm swings forward, the rear side of the U-shaped fork pushes the guide wheel forward. Since the lower end of the flipping plate is rotatably connected to the base plate, the guide wheel moves upward along the rear side of the U-shaped fork, causing the flipping plate to flip forward. When the upper part of the swing arm swings backward, the front side of the U-shaped fork pushes the guide wheel backward. Since the lower end of the flipping plate is rotatably connected to the base plate, the guide wheel moves upward along the front side of the U-shaped fork, causing the flipping plate to flip backward.

[0019] 2. In this invention, the sliding block can automatically release the material during loading and unloading to facilitate loading and unloading, and can also automatically clamp the material during the flipping process to prevent the material from falling off during flipping. More specifically, when the positioning post is inserted into the positioning hole, the rear end of the sliding block does not contact or press against the material in the placement groove, thus facilitating loading and unloading. When the flipping plate flips backward onto the bottom plate, the positioning post at the rear of the bottom plate is inserted into the positioning hole. During insertion, due to the guidance and restriction of the positioning post, the sliding block will slide forward along the groove (towards the upper part of the flipping plate) for a certain distance. At this time, when loading material into the placement groove, there will be no interference from the upper part of the sliding block. When the flip plate flips forward onto the bottom plate, the positioning pin at the front of the bottom plate inserts into the positioning hole. During insertion, due to the guidance and restriction of the positioning pin, the sliding block slides a distance backward along the slide groove (towards the lower part of the flip plate), releasing the material. The material automatically falls downward due to its own weight. When the positioning hole disengages from the positioning pin, the rear end of the sliding block presses against the material in the placement groove. That is, during the forward flipping of the flip plate, the sliding block flips with the flip plate, and the positioning hole gradually disengages from the positioning pin. When the positioning hole disengages from the positioning pin, the sliding block, under the action of the return spring, firmly presses against the material, achieving material clamping. This invention has a simple structure, and can automatically clamp and release materials using a simple mechanical linkage structure without the need for an additional drive device (this invention only requires a drive structure to drive the swing arm, not a drive device for clamping materials), and also does not require a position sensor. The cost is relatively low, and the flipping is fast and reliable. Attached Figure Description

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure at the sliding pressure block;

[0024] Figure 4 This is a schematic diagram of the flip plate of the present invention after it has been flipped forward;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the sliding pressure block;

[0026] Figure 6 yes Figure 5 Sectional view at point AA. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 6 The flipping mechanism shown includes a frame 1, a base plate 2 on the frame 1, a flipping plate 3 rotatably connected to the base plate 2, the lower part of the flipping plate 3 being rotatably connected to the middle part of the base plate 2, guide wheels 31 on the left and right sides of the middle or upper part of the flipping plate 3, a swing arm 4 on the frame 1, the middle part of the swing arm 4 being rotatably connected to the frame 1, a U-shaped fork 41 on the upper part of the swing arm 4, the U-shaped fork 41 forking from bottom to top onto the guide wheels 31, and a drive structure 5 between the lower part of the swing arm 4 and the frame 1 for driving the lower part of the swing arm 4 to swing back and forth.

[0029] In this invention, the swinging motion of the swing arm 4 is converted into the flipping motion of the flipping plate 3, resulting in a simple structure and high efficiency. More specifically, the drive structure 5 drives the lower part of the swing arm 4 to swing back and forth, causing the upper part of the swing arm 4 to swing back and forth as well. The U-shaped fork 41 on the upper part of the swing arm 4 is fitted onto the guide wheel 31, which can rotate within the U-shaped fork 41 and move along its side wall. When the upper part of the swing arm 4 swings forward, the rear side of the U-shaped fork 41 pushes the guide wheel 31 forward. Since the lower end of the flipping plate 3 is rotatably connected to the base plate 2, the guide wheel 31 moves upward along the rear side of the U-shaped fork 41, causing the flipping plate 3 to flip forward. When the upper part of the swing arm 4 swings backward, the front side of the U-shaped fork 41 pushes the guide wheel 31 backward. Since the lower end of the flipping plate 3 is rotatably connected to the base plate 2, the guide wheel 31 moves upward along the front side of the U-shaped fork 41, causing the flipping plate 3 to flip backward.

[0030] Preferably, the guide wheel 31 is rotatable, so that the friction between the guide wheel 31 and the front and rear sides of the U-shaped fork 41 is rolling friction, thereby reducing the friction and making the guide wheel 31 move smoothly.

[0031] In a more specific embodiment of the present application, the driving structure 5 comprises a linear driver 51 rotatably connected to the frame 1, and the output end of the linear driver 51 is rotatably connected to the lower part of the swing arm 4. The linear driver 51 is preferably a pneumatic cylinder or an electric push rod. As shown in Figure 1 、 Figure 2 The linear driver 51 is a pneumatic cylinder, the cylinder body part of which is hinged to the frame 1, and the output end of which is hinged to the lower part of the swing arm 4. Of course, the driving structure 5 can also be other similar driving structures, such as a gear and rack structure.

[0032] In a more specific embodiment of the present application, the turnover plate 3 is provided with a placing groove 32 for placing materials, and a fixing structure for clamping the materials in the placing groove 32.

[0033] In a more specific embodiment of the present application, the fixing structure comprises a sliding pressing block 33 which can extend into the placing groove 32 and elastically press against the materials. Of course, the sliding pressing block 33 is connected with a structure which can drive the sliding pressing block 33 to automatically clamp and release the materials during the turnover of the turnover plate 3, which will be described in detail below.

[0034] In a more specific embodiment of the present application, the turnover plate 3 is provided with a sliding groove 34 in the front-rear direction, the placing groove 32 is arranged at the rear of the sliding groove 34, and the sliding pressing block 33 is slidingly connected in the sliding groove 34 and can extend into the placing groove 32 through the side wall of the placing groove 32. Of course, the sliding groove 34 comprises a groove with an open upper end, and an end cover which can be detachably fixed to the upper end of the groove. A return spring 35 which can press the sliding pressing block 33 in the direction of the placing groove 32 is arranged between the sliding pressing block 33 and the turnover plate 3. Under the action of the return spring 35, the rear end of the sliding pressing block 33 can elastically press against the materials in the placing groove 32.

[0035] In a more specific embodiment of the present application, the sliding pressing block 33 is provided with a positioning hole 331, and the front and rear parts of the bottom plate 2 are each provided with a positioning column 21 which can be inserted into the positioning hole 331; when the turnover plate 3 is turned rearward, the positioning column 21 of the rear part of the bottom plate 2 is inserted into the positioning hole 331; when the turnover plate 3 is turned forward, the positioning column 21 of the front part of the bottom plate 2 is inserted into the positioning hole 331.

[0036] In the present application, the sliding pressing block 33 can automatically release the materials during feeding and discharging, so as to facilitate feeding and discharging, and can also automatically clamp the materials during turnover, so as to avoid the materials from falling off during turnover. More specific explanations are as follows:

[0037] When the positioning column 21 is inserted into the positioning hole 331, the rear end of the sliding pressing block 33 does not contact or tightly press against the materials in the placing groove 32, so as to facilitate feeding and discharging. Figure 3As shown, when the turnover plate 3 is turned over to the bottom plate 2; the positioning column 21 at the rear of the bottom plate 2 is inserted into the positioning hole 331, and during the insertion process, the sliding block 33 will slide a distance forward (in the upper portion direction of the turnover plate 3) along the sliding groove 34 due to the guidance and limitation of the positioning column 21, and at this time, when the material is placed into the placement groove 32, the upper portion of the sliding block 33 will not interfere. Figure 4 As shown, when the turnover plate 3 is turned over to the bottom plate 2; the positioning column 21 at the rear of the bottom plate 2 is inserted into the positioning hole 331, and during the insertion process, the sliding block 33 will slide a distance forward (in the upper portion direction of the turnover plate 3) along the sliding groove 34 due to the guidance and limitation of the positioning column 21, and at this time, when the material is placed into the placement groove 32, the upper portion of the sliding block 33 will not interfere.

[0038] As shown, when the positioning hole 331 is separated from the positioning column 21, the rear end of the sliding block 33 is pressed against the material in the placement groove 32. That is, during the turning over process of the turnover plate 3, the sliding block 33 turns over with the turnover plate 3, and the positioning hole 331 gradually separates from the positioning column 21, and when the positioning hole 331 separates from the positioning column 21, the sliding block 33 is tightly abutted against the material under the action of the reset spring 35, thereby realizing the clamping of the material. Figure 1

[0039] The present application has simple structure, and can realize the automatic clamping and releasing of the material by using a simple mechanical linkage structure, without the need of additional driving device (only the driving structure 5 for driving the swing arm 4 is needed, without the need of the driving device for clamping the material), and without the need of arranging the position sensor, so that the cost is relatively low, and the turnover is fast and reliable.

[0040] In a more specific embodiment of the present application, the bottom surface and the top surface of the sliding groove 34 are both provided with strip-shaped limiting holes 341 in the front-rear direction, and the strip-shaped limiting holes 341 are opposite to the positioning hole 331. The strip-shaped limiting holes 341 are mainly used for allowing the positioning column 21 to pass through, so as to avoid the interference with the positioning column 21.

[0041] In a more specific embodiment of the present application, the upper end of the positioning column 21 is provided with a first guide chamfer 211, and the upper and lower ends of the positioning hole 331 are both provided with a second guide chamfer 3311. Thus, during the insertion process of the positioning column 21 into the positioning hole 331, the sliding block 33 can move a distance backward or forward under the guidance of the first guide chamfer 211 and the second guide chamfer 3311 (the relative displacement along the chamfer will be generated when the two chamfers abut against each other).

[0042] In a more specific embodiment of the present application, as shown in Figure 5 , Figure 6 ​As shown, the rear end of the sliding block 33 is provided with a rearwardly gradually rising anti-falling slope 332. When the material is placed into the placing groove 32, the anti-falling slope 332 of the rear end of the sliding block 33 is in contact with the material, so that the material cannot easily fall off during the overturning process, and the material falling off can be avoided.

[0043] In a more specific embodiment of the present application, the front and rear portions of the bottom plate 2 are both provided with a buffer pad 22. The buffer pad 22 is preferably a flexible pad, so that the overturning plate 3 can be effectively buffered, and the overturning plate 3 can be prevented from directly impacting on the bottom plate 2.

[0044] Obviously, the above embodiments of the present application are merely exemplary for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A turnover mechanism characterised in that: The utility model provides a material placing device, including frame (1), be equipped with bottom plate (2) on frame (1), the bottom plate (2) is rotatably connected with the back and forth turnover of turnover board (3), and the lower part of turnover board (3) is rotatably connected in the middle part of bottom plate (2), and the left and right sides of the middle part or upper part of turnover board (3) are equipped with guide wheel (31), the frame (1) is also equipped with swing arm (4), and the middle part of swing arm (4) is rotatably connected on frame (1), and the upper part of swing arm (4) is equipped with U-shaped fork mouth (41), and U-shaped fork mouth (41) is forked on guide wheel (31) from bottom to top, and the lower part of swing arm (4) and frame (1) are equipped with the drive structure (5) for driving swing arm (4) lower part back and forth swing.

2. A turnover mechanism according to claim 1, characterised in that: The drive structure (5) includes a linear actuator (51) rotatably connected to the frame (1), and the output end of the linear actuator (51) is rotatably connected to the lower part of the swing arm (4).

3. The turnover mechanism according to claim 1, wherein: The turnover board (3) is provided with a placing groove (32) for placing materials and a fixing structure for clamping the materials in the placing groove (32).

4. A turnover mechanism according to claim 3, wherein: The fixing structure includes a sliding pressure block (33) that can extend into the placing groove (32) and elastically press onto the materials.

5. A turnover mechanism according to claim 4, wherein: The turnover board (3) is provided with a sliding groove (34) in the front-rear direction, the placing groove (32) is arranged at the rear of the sliding groove (34), the sliding pressure block (33) is slidingly connected in the sliding groove (34) and can extend into the placing groove (32) through the side wall of the placing groove (32), and the sliding pressure block (33) and the turnover board (3) are provided with a return spring (35) that can press the sliding pressure block (33) in the direction of the placing groove (32).

6. A turnover mechanism according to claim 5, wherein: The sliding pressure block (33) is provided with a positioning hole (331), the front and rear parts of the bottom plate (2) are provided with positioning columns (21) that can be inserted into the positioning hole (331); when the turnover board (3) is turned back, the positioning column (21) at the rear part of the bottom plate (2) is inserted into the positioning hole (331); when the turnover board (3) is turned forward, the positioning column (21) at the front part of the bottom plate (2) is inserted into the positioning hole (331).

7. A turnover mechanism according to claim 6, wherein: The bottom surface and the top surface of the sliding groove (34) are provided with strip-shaped limiting holes (341) in the front-rear direction, and the strip-shaped limiting holes (341) are opposite to the positioning hole (331) in position.

8. A turnover mechanism according to claim 6, wherein: The upper end of the positioning column (21) is provided with a first guide chamfer (211), and the upper and lower ends of the positioning hole (331) are provided with second guide chamfers (3311).

9. A turnover mechanism according to any one of claims 4 to 8, wherein: The rear end of the sliding pressure block (33) is provided with a gradually rising anti-disengagement inclined surface (332) from front to rear.

10. A turnover mechanism according to any one of claims 1 to 8, wherein: The front and rear parts of the bottom plate (2) are provided with buffer pads (22).

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