An adjustment mechanism for correcting the position of a double workpiece

Abstract

The present application relates to the technical field of sanitary product production equipment, and in particular to an adjusting mechanism for correcting positions of double workpieces; the adjusting mechanism comprises: a first conveying chain for sequentially performing inclined conveying and horizontal conveying on a first workpiece, a second conveying chain for sequentially performing inclined conveying and horizontal conveying on a second workpiece, and a synchronous shaft for synchronously driving the first conveying chain and the second conveying chain; one end of the synchronous shaft is in transmission connection with the first conveying chain, and the other end is in transmission connection with the first conveying chain; the first conveying chain and the second conveying chain are arranged side by side; an inclined section of the second conveying chain for performing inclined conveying on the second workpiece is hinged with a horizontal section of the second conveying chain for performing horizontal conveying on the second workpiece. The adjusting mechanism in the present application can correct positions of two workpieces that are not synchronized in the advancing direction, so that the two workpieces reach a preset position at the same time.

Description

Technical Field

[0001] This invention relates to the field of hygiene product manufacturing equipment technology, and more specifically, to an adjustment mechanism for correcting the position of two workpieces. Background Technology

[0002] In the traditional hygiene products industry, the production of hygiene products such as diapers, sanitary napkins, or sanitary pants requires an ear-tape lamination process. This process involves first cutting and shaping continuously conveyed material, then transferring it to a conveyor line using a transfer drum, and finally adsorbing a pair of ear-tapes simultaneously via an adsorption unit and transferring them to the main line to be laminated with the product.

[0003] The pair of ear tabs used for laminating on both sides of the product have a distance deviation in the feeding direction of the conveyor line, which causes the ear tabs to not be symmetrically laminated on both sides of the product, affecting product quality.

[0004] Therefore, it is necessary to design a mechanism that can adjust the relative position of two workpieces during the conveying process to address the above situation. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an adjustment mechanism for correcting the position of a workpiece. This adjustment mechanism can correct the positions of two workpieces that are not synchronized in their forward direction, so that the two workpieces reach the preset position at the same time.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An adjustment mechanism for correcting the position of two workpieces includes: a first conveyor chain for sequentially conveying a first workpiece at an angle and then horizontally; a second conveyor chain for sequentially conveying a second workpiece at an angle and then horizontally; and a synchronous shaft for synchronously driving the first and second conveyor chains. One end of the synchronous shaft is connected to the first conveyor chain, and the other end is connected to the second conveyor chain. The first and second conveyor chains are arranged side by side. The inclined section of the second conveyor chain for conveying the second workpiece at an angle is hinged to the horizontal section for conveying the second workpiece horizontally, thereby increasing or decreasing the distance traveled by the second workpiece.

[0007] Optionally, the first conveyor chain includes: a first support having a horizontal section and an inclined section, a first power roller, a first driven roller, a first conveyor belt, and a first steering roller for adjusting the conveying direction of the first conveyor belt to the first workpiece; one end of the first support is rotatably connected to the first power roller, the other end of which is rotatably connected to the first driven roller, and the middle end of which is rotatably connected to the first steering roller; one end of the first conveyor belt is sleeved on the outer wall of the first power roller, the other end of which is sleeved on the outer wall of the first driven roller, and the inner surface of the middle end abuts against the outer wall of the first steering roller; one end of the synchronous shaft is drive-connected to the first power roller.

[0008] Optionally, the second conveyor chain includes: a horizontally arranged second support, an inclined third support, a second power roller, a second driven roller, a second conveyor belt, a second steering roller for adjusting the conveying direction of the second conveyor belt to the second workpiece, and a tensioning roller located below the second steering roller and used to press against the second conveyor belt; one end of the second support is rotatably connected to the second power roller, and its other end is hinged to one end of the third support to form a swing axis; one end of the third support is rotatably connected to the second steering roller, and its other end is rotatably connected to the second driven roller; the tensioning roller is rotatably connected to one end of the third support; one end of the second conveyor belt is sleeved on the outer wall of the second power roller, and its other end is sleeved on the outer wall of the second driven roller, with the upper inner surface of its middle end abutting against the outer wall of the second steering roller, and the lower outer surface of its middle end abutting against the outer wall of the tensioning roller; the other end of the synchronous shaft is drively connected to the second power roller.

[0009] Optionally, a plurality of first suction holes are provided on the first conveyor belt, and a first negative pressure box is provided inside the first bracket to provide suction and adsorb the first workpiece onto the first conveyor belt through the plurality of first suction holes; a plurality of second suction holes are provided on the second conveyor belt, and a second negative pressure box is provided inside the second bracket to provide suction and adsorb the second workpiece onto the second conveyor belt through the plurality of second suction holes; and a third negative pressure box is provided inside the third bracket to provide suction and adsorb the second workpiece onto the second conveyor belt through the plurality of second suction holes.

[0010] Optionally, both the first workpiece and the second workpiece are lightweight accessories used in hygiene products.

[0011] Optionally, the lightweight accessory is an ear patch.

[0012] Optionally, the second conveyor chain is provided with a circular belt driven assembly for pressing against the second workpiece to prevent it from deviating.

[0013] Optionally, the circular belt driven assembly includes: a first support rod disposed at the other end of the second bracket, a second support rod disposed at one end of the third bracket, a first driven wheel rotatably disposed on the first support rod, a second driven wheel rotatably disposed on the second support rod, and a driven belt for pressing against the second workpiece.

[0014] Optionally, a third support rod is provided on the third bracket to fix the hinge angle between it and the second bracket.

[0015] Optionally, a first negative pressure driven pulley is provided at the other end of the first bracket to assist one of the ear pads in transferring from the transfer drum to the first conveyor belt, and a second negative pressure driven pulley is provided at the other end of the third bracket to assist the other ear pad in transferring from the transfer drum to the second conveyor belt.

[0016] In summary, the present invention has the following beneficial effects: By using a first conveyor chain and a second conveyor chain to transport the first workpiece and the second workpiece respectively, when the first and second workpieces are misaligned in the forward direction, adjusting the inclination angle of the inclined section of the second conveyor chain can increase or decrease the relative length traveled by the second workpiece, allowing the second workpiece to wait for or catch up with the first workpiece and simultaneously reach the preset position. When both the first and second workpieces are ear-shaped, a pair of ear-shaped pieces can reach the preset position simultaneously, facilitating adsorption by the adsorption unit, thereby reducing product defect rates and improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention (I); Figure 2 This is a schematic diagram of the structure of the present invention (II); Figure 3 This is an exploded view of the present invention; Figure 4 This is a perspective view of the present invention; Figure 5 This is a schematic diagram of the correction principle of the present invention; wherein, S1 is the length of the horizontal section of the second conveyor chain, S2 is the length of the inclined section of the second conveyor chain, S3 is the arc length between points A and B, S4 is the length of the horizontal section of the first conveyor chain, S5 is the length of the inclined section of the first conveyor chain, S6 is the arc length between points A and C, point A is the discharge port of the transfer drum, point B is the mounting point of the second negative pressure driven wheel, and point C is the mounting point of the first negative pressure driven wheel.

[0018] In the diagram: 1. First conveyor chain; 11. First support; 12. First driving roller; 13. First driven roller; 14. First conveyor belt; 15. First steering roller; 16. First negative pressure driven pulley; 2. Second conveyor chain; 21. Second support; 22. Third support; 221. Third support rod; 23. Second driving roller; 24. Second driven roller; 25. Second conveyor belt; 26. Second steering roller; 27. Tensioning roller; 28. Circular belt driven assembly; 281. First support rod; 282. Second support rod; 283. First driven pulley; 284. Second driven pulley; 285. Driven belt; 29. ​​Second negative pressure driven pulley; 3. Synchronous shaft. Detailed Implementation

[0019] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] This invention provides an adjustment mechanism for correcting the position of two workpieces, comprising: a first conveyor chain 1 for sequentially conveying a first workpiece at an angle and horizontally, a second conveyor chain 2 for sequentially conveying a second workpiece at an angle and horizontally, and a synchronous shaft 3 for synchronously driving the first conveyor chain 1 and the second conveyor chain 2; one end of the synchronous shaft 3 is connected to the first conveyor chain 1, and the other end is connected to the second conveyor chain 2; the first conveyor chain 1 and the second conveyor chain 2 are arranged side by side; the inclined section of the second conveyor chain 2 for conveying the second workpiece at an angle is hinged to the horizontal section for conveying the second workpiece horizontally, so as to increase or decrease the distance traveled by the second workpiece.

[0023] like Figure 1-5As shown, the first workpiece and the second workpiece are transferred to the right end of the first conveyor chain 1 and the right end of the second conveyor chain 2 respectively by other material transfer devices; the first workpiece moves first to the upper left on the first conveyor chain 1, and then moves horizontally to the left; the second workpiece moves first to the upper left on the second conveyor chain 1, and then moves horizontally to the left.

[0024] The correction principle of this invention is as follows: the initial design path of the first workpiece is S4+S5+S6, and the initial design path of the second workpiece is S1+S2+S3, and both are equal. When there is a large misalignment between the first and second workpieces, such as when the first workpiece is in front of the second workpiece (e.g.) Figure 5 As shown in the diagram, point E represents the first workpiece, and point D represents the second workpiece. Manually lift the right end of the second conveyor chain 2, rotating it by a certain angle. This causes point B to move upwards closer to point A (i.e., S3 decreases), reducing the distance traveled by the second workpiece before it is transferred to the second conveyor chain 2 between points A and B. This ensures that the second workpiece is aligned with the first workpiece before it is transferred to the first conveyor chain 1 on its horizontal section (i.e., there is no misalignment between the second workpiece and the first workpiece). Conversely, if the first workpiece is behind the second workpiece, manually press down on the right end of the second conveyor chain 2 until it is aligned. Here, "first workpiece" and "second workpiece" refer to components or products in the manufacturing or engineering field. They can be finished or semi-finished products in any manufacturing process, such as mechanical parts or electronic components. In addition, in order to make the linear speed of the first conveyor chain 1 conveying the first workpiece closer to the linear speed of the second conveyor chain 2 conveying the second workpiece, the power input structure in the first conveyor chain 1 is connected to one end of the synchronous shaft 3, and the power input structure in the second conveyor chain 2 is connected to the other end of the synchronous shaft 3.

[0025] Further, the first conveyor chain 1 includes: a first support 11 containing a horizontal section and an inclined section, a first power roller 12, a first passive roller 13, a first conveyor belt 14, and a first steering roller 15 for adjusting the conveying direction of the first conveyor belt 14 to the first workpiece; one end of the first support 11 is rotatably connected to the first power roller 12, the other end is rotatably connected to the first passive roller 13, and the middle end is rotatably connected to the first steering roller 15; one end of the first conveyor belt 14 is sleeved on the outer wall of the first power roller 12, the other end is sleeved on the outer wall of the first passive roller 13, and the inner surface of the middle end abuts against the outer wall of the first steering roller 15; one end of the synchronous shaft 3 is drive-connected to the first power roller 12.

[0026] like Figure 3As shown, the first support 11 consists of a horizontal section and an inclined section fixedly connected, with the length of the inclined section being greater than the length of the horizontal section, and the connection angle between the horizontal and inclined sections being an obtuse angle. The first steering roller 15 is mounted at the upper end of the connection angle in a conventional rotatable manner, such that both ends of the first steering roller 15 are fixed to the inner rings of two bearings, while the outer rings of the two bearings are fixed to both sides of the first support 11. The first driving roller 12 and the first driven roller 13 are also rotatably mounted at the left end of the horizontal section and the right end of the inclined section, respectively, via bearing connections. The first conveyor belt 14 is a conventional annular belt, with its left inner surface covering (wrapping) the outer wall of the first driving roller 12, and its right inner surface covering (wrapping) the outer wall of the first driven roller 13. Its middle inner surface abuts against the upper half of the outer wall of the first steering roller 15. Furthermore, to prevent the first conveyor belt 14 from sagging due to its excessive length, multiple support rollers (not shown in the attached diagram) can be rotatably mounted on the first support 11 to support the inner wall of the first conveyor belt 14.

[0027] Further, the second conveyor chain 2 includes: a horizontally arranged second support 21, an inclined third support 22, a second power roller 23, a second passive roller 24, a second conveyor belt 25, a second steering roller 26 for adjusting the conveying direction of the second conveyor belt 25 to the second workpiece, and a tensioning roller 27 located below the second steering roller 26 and for pressing against the second conveyor belt 25; one end of the second support 21 is rotatably connected to the second power roller 23, and the other end is hinged to one end of the third support 22 to form a swing axis; One end of the third bracket 22 is rotatably connected to the second steering roller 26, and the other end is rotatably connected to the second driven roller 24; the tension roller 27 is rotatably connected to one end of the third bracket 22; one end of the second conveyor belt 25 is sleeved on the outer wall of the second power roller 23, and the other end is sleeved on the outer wall of the second driven roller 24, with the upper inner surface of its middle end abutting against the outer wall of the second steering roller 26, and the lower outer surface of its middle end abutting against the outer wall of the tension roller 27; the other end of the synchronous shaft 3 is drive-connected to the second power roller 23.

[0028] like Figure 3As shown, the second support 21 and the third support 22 form the support structure of the second conveyor chain 2. The second support 21 is installed horizontally, and its right end is hinged to the left end of the third support 22 via a pin or existing hinge, allowing the third support 22 to swing up and down around the hinge axis. The third support 22 is in an inclined state, and the connection angle between it and the second support 21 is an obtuse angle. The second steering roller 26 is mounted at the upper end of the connection angle in an existing rotatable manner, such as the two ends of the second steering roller 26 being fixed to the inner rings of two bearings, while the outer rings of the two bearings are fixed to the sides of the third support 22 or the sides of the second support 21. The second driving roller 23 and the first passive roller 24 are also rotatably mounted at the left end of the second support 21 and the right end of the third support 22, respectively, through bearing connections. The second conveyor belt 26 is a conventional annular belt. Its left inner surface is fitted (wrapped) around the outer wall of the second drive roller 23, and its right inner surface is fitted (wrapped) around the outer wall of the second driven roller 24. The inner surface of its middle section abuts against the upper half of the outer wall of the second guide roller 26, and the outer surface of its middle section below the second guide roller 26 is supported and abutted by the tension roller 27. Furthermore, to prevent the second conveyor belt 26 from sagging due to its excessive length, multiple support rollers (not shown in the attached diagram) can be rotatably mounted on the second bracket 21 and the third bracket 22 to support the inner wall of the second conveyor belt 26.

[0029] Furthermore, a plurality of first suction holes are provided on the first conveyor belt 14, and a first negative pressure box is provided inside the first bracket 11 for providing suction and adsorbing the first workpiece onto the first conveyor belt 14 through the plurality of first suction holes; a plurality of second suction holes are provided on the second conveyor belt 25, and a second negative pressure box is provided inside the second bracket 21 for providing suction and adsorbing the second workpiece onto the second conveyor belt 25 through the plurality of second suction holes; and a third negative pressure box is provided inside the third bracket 22 for providing suction and adsorbing the second workpiece onto the second conveyor belt 25 through the plurality of second suction holes.

[0030] When both the first and second workpieces are lightweight accessories for hygiene products, such as earplugs, a certain amount of adsorption force is required to stably fix the earplugs onto the first conveyor belt 14 or the second conveyor belt 25. Therefore, first suction holes (not shown in the attached diagram) are evenly distributed on the first conveyor belt 14, and a first negative pressure box (not shown in the attached diagram), connected to a vacuum pump, is installed inside the first bracket 11. The suction port of the first negative pressure box adsorbs one earplug onto the first conveyor belt 14 through the first suction hole. Similarly, second suction holes (not shown in the attached diagram) are evenly distributed on the second conveyor belt 25, and second and third negative pressure boxes (not shown in the attached diagram), connected to a vacuum pump, are installed inside the second bracket 21 and the third bracket 22, respectively. The suction ports of the second and third negative pressure boxes adsorb the other earplug onto the second conveyor belt 25 through the second suction hole.

[0031] Furthermore, the second conveyor chain 2 is provided with a circular belt driven assembly 28 for pressing against the second workpiece to prevent it from deviating.

[0032] Furthermore, the circular belt driven assembly 28 includes: a first support rod 281 disposed at the other end of the second bracket 21, a second support rod 282 disposed at one end of the third bracket 22, a first driven wheel 283 rotatably disposed on the first support rod 281, a second driven wheel 284 rotatably disposed on the second support rod 282, and a driven belt 285 for pressing against the second workpiece.

[0033] like Figure 2 As shown, to prevent the second workpiece (such as an earpiece) from deviating when it changes from an inclined upward and leftward movement to a horizontal leftward movement, a circular belt driven assembly 28 is installed in the transition area between the second support 21 and the third support 22. The first support rod 281 in the circular belt driven assembly 28 is fixedly installed on the end of the second support 21 near the third support 22 via a connecting bracket, and the second support rod 282 is fixedly installed on the end of the third support 22 near the third support 21 via a connecting bracket. The two ends of the driven belt 285 are respectively fitted onto the first driven pulley 283 and the second driven pulley 284. Normally, the driven belt 285 presses against the second conveyor belt 25; during operation, it indirectly presses against the second conveyor belt 25 by pressing against the second workpiece.

[0034] Furthermore, a third support rod 221 is provided on the third bracket 22 for fixing the hinge angle between it and the second bracket 21.

[0035] like Figure 1-2As shown, to prevent the third support 22 from swaying and deviating from its preset position during operation, a third support rod 221 is installed in its middle. One end of the third support rod 221 is fixedly connected to the side wall of the third support 22, and the other end is locked to the fixing piece on the earpiece production line through a quick-locking device. Loosening the quick-locking device allows the third support 22 to be swung to adjust its tilt angle, while locking the quick-locking device keeps the angle between the third support 22 and the second support 21 stable.

[0036] Furthermore, at the other end of the first bracket 11, a first negative pressure driven wheel 16 is provided to assist one of the ear pads in transferring from the transfer drum 4 to the first conveyor belt 14, and at the other end of the third bracket 22, a second negative pressure driven wheel 29 is provided to assist the other ear pad in transferring from the transfer drum 4 to the second conveyor belt 25.

[0037] like Figure 3-4 As shown, the ear patch is easily transferred from the transfer drum 4 to the first conveyor belt 14 and the second conveyor belt 25 with a large initial positional deviation. To reduce this initial positional deviation, a first negative pressure driven wheel 16 is fixedly installed at the right end of the first bracket 11, and a second negative pressure driven wheel 29 is fixedly installed at the right end of the third bracket 22. Both the first negative pressure driven wheel 16 and the second negative pressure driven wheel 29 are connected to a vacuum pump. After the ear patch is attracted by the suction holes on its surface, it is transferred from the transfer drum 4 to the first conveyor belt 14 and the second conveyor belt 25 with a small positional difference.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An adjustment mechanism for correcting the position of two workpieces, characterized in that, include: A first conveyor chain that sequentially conveys a first workpiece at an angle and then at a horizontal angle, a second conveyor chain that sequentially conveys a second workpiece at an angle and then at a horizontal angle, and a synchronous shaft for synchronously driving the first and second conveyor chains; one end of the synchronous shaft is connected to the first conveyor chain and the other end is connected to the second conveyor chain. The first conveyor chain includes: a first support having a horizontal section and an inclined section, and a first conveyor belt; The second conveyor chain includes: a horizontally arranged second support, an inclined third support, a second power roller, a second driven roller, a second conveyor belt, a second steering roller for adjusting the conveying direction of the second conveyor belt to the second workpiece, and a tension roller located below the second steering roller and used to press against the second conveyor belt; one end of the second support is rotatably connected to the second power roller, and its other end is hinged to one end of the third support to form a swing axis; one end of the third support is rotatably connected to the second steering roller, and its other end is rotatably connected to the second driven roller; the tension roller is rotatably connected to one end of the third support; one end of the second conveyor belt is sleeved on the outer wall of the second power roller, and its other end is sleeved on the outer wall of the second driven roller, with the upper inner surface of its middle end abutting against the outer wall of the second steering roller, and the lower outer surface of its middle end abutting against the outer wall of the tension roller; the other end of the synchronous shaft is drively connected to the second power roller; At the other end of the first bracket, a first negative pressure driven wheel is provided to assist the first workpiece in transferring from the transfer drum to the first conveyor belt; at the other end of the third bracket, a second negative pressure driven wheel is provided to assist the second workpiece in transferring from the transfer drum to the second conveyor belt. The first conveyor chain and the second conveyor chain are arranged side by side; the inclined section of the second conveyor chain for inclined conveying of the second workpiece is hinged to the horizontal section for horizontal conveying of the second workpiece, and the distance the second workpiece travels on the transfer drum is changed by lifting or pressing the inclined section of the second conveyor chain.

2. The adjusting mechanism as described in claim 1, characterized in that, The first conveyor chain further includes: a first power roller, a first driven roller, and a first steering roller for adjusting the conveying direction of the first conveyor belt to the first workpiece; one end of the first bracket is rotatably connected to the first power roller, the other end of which is rotatably connected to the first driven roller, and the middle end of which is rotatably connected to the first steering roller; one end of the first conveyor belt is sleeved on the outer wall of the first power roller, the other end of which is sleeved on the outer wall of the first driven roller, and the inner surface of the middle end abuts against the outer wall of the first steering roller; one end of the synchronous shaft is drively connected to the first power roller.

3. The adjusting mechanism as described in claim 1, characterized in that, A plurality of first suction holes are provided on the first conveyor belt, and a first negative pressure box is provided inside the first bracket to provide suction and adsorb the first workpiece onto the first conveyor belt through the plurality of first suction holes; a plurality of second suction holes are provided on the second conveyor belt, and a second negative pressure box is provided inside the second bracket to provide suction and adsorb the second workpiece onto the second conveyor belt through the plurality of second suction holes; a third negative pressure box is provided inside the third bracket to provide suction and adsorb the second workpiece onto the second conveyor belt through the plurality of second suction holes.

4. The adjusting mechanism as described in claim 3, characterized in that, Both the first and second workpieces are lightweight accessories used in hygiene products.

5. The adjusting mechanism as described in claim 4, characterized in that, The lightweight accessory is an ear patch.

6. The adjusting mechanism as described in claim 1, characterized in that, The second conveyor chain is provided with a circular belt driven assembly for pressing against the second workpiece to prevent it from deviating.

7. The adjusting mechanism as described in claim 6, characterized in that, The circular belt driven assembly includes: a first support rod disposed at the other end of the second bracket, a second support rod disposed at one end of the third bracket, a first driven wheel rotatably disposed on the first support rod, a second driven wheel rotatably disposed on the second support rod, and a driven belt for pressing against the second workpiece.

8. The adjusting mechanism as described in claim 6, characterized in that, A third support rod is provided on the third bracket to fix the hinge angle between it and the second bracket.

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