Automatic pillowcase turning device

Abstract

The invention relates to the technical field of textile machinery automation equipment, in particular to an automatic pillowcase turning device which comprises a storage rack, a taking mechanism, a turning mechanism, a discharging mechanism and a PLC control system. The storage rack is provided with a lifting device I, a placing table and a laser range finder I, so that automatic feeding is realized; the material taking mechanism comprises a first linear driving module, a rotating disc and an extraction arm with an inserting plate and an elastic supporting plate, the front end of the inserting plate is flat and smooth, and the supporting plate is elastically supported through a spring. The turn-over mechanism is provided with a rotary table, a cross-shaped connecting plate, a second connecting plate belt linear driving module, a hook claw and a second telescopic supporting rod. The end of the second supporting rod is of an arc-shaped face conical structure. The discharging mechanism comprises a storage rack, a second lifting mechanism, a third linear driving module and a clamping mechanism and is provided with a second laser range finder. The full-process automatic turn-over machine realizes full-process automatic turn-over of multi-size pillowcases, improves the production flexibility and efficiency, protects the fabric quality, is stable and reliable in operation, and is suitable for large-scale production of home textiles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile machinery automation equipment, in particular to an automatic pillowcase turning device. BACKGROUND

[0002] Pillowcase is an important category of home textile products, and its production process needs to go through weaving, cutting, sewing and other processes. The turning process is a key link between the previous sewing and the subsequent quality inspection and packaging. In the scenario of large-scale production, the traditional manual turning method has significant bottlenecks: on the one hand, the efficiency of manual single processing is limited, which is difficult to match the continuous output rhythm of the production line, resulting in material accumulation between processes; on the other hand, the force and angle of manual operation are difficult to standardize, which is easy to cause pillowcase edge and corner wrinkles and fabric fiber damage, especially for high-end fabrics such as high-count and high-density fabrics, the defect rate is high.

[0003] In order to solve the limitations of manual turning, the industry has tried to develop automatic turning equipment. The utility model patent with patent number CN202123313240.X discloses a pillowcase turning machine. The device turns over the pillowcase by two rectangular push rods sliding in opposite directions. However, this technical solution has fundamental defects: first, the push rod is a fixed size structure, which can only adapt to a single size of pillowcase. When producing different size products, the push rod assembly needs to be replaced, which leads to long production line switching time and seriously affects the production continuity; second, the device lacks a matching automatic feeding and discharging mechanism, and the pillowcase still needs to be manually set on the push rod, which cannot realize full-process automation.

[0004] In addition, the existing turning equipment also has the following technical pain points: first, the storage link mostly uses fixed shelves, which need to be adjusted manually when the pillowcase stacking height decreases, and the material taking position cannot be kept constant; second, the turning mechanism is rigidly fixed to the pillowcase, lacks flexible buffer design, and is easy to leave pressure marks on the fabric surface; third, there is a lack of coordinated control logic between the mechanisms, and the material taking, turning and discharging actions are not coherent, which is easy to cause material falling or jamming. These problems make it difficult for existing equipment to meet the comprehensive needs of home textile enterprises for production efficiency, product quality and flexible production, and an innovative technical solution is needed to break through the above bottlenecks. SUMMARY

[0005] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0006] An automatic pillowcase turning device, comprising a storage rack for placing pillowcases to be turned over; The material taking mechanism is arranged at the rear side of the storage rack and used for taking the pillowcase on the storage rack. The material taking mechanism comprises a rack one, a linear drive module one is arranged at the top of the rack one, a rotating disc is arranged on the moving part of the linear drive module, a mounting frame one is arranged at the top of the rotating disc, a plurality of taking arms are uniformly arranged on the mounting frame one, the taking arms are vertically and liftably arranged on the mounting frame one, the taking arms are horizontally arranged, and the taking arm comprises an insertion plate. The front end of the insertion plate is in a flat structure and the edge is smooth. The surface turning mechanism is arranged at the rear side of the material taking mechanism and used for the surface turning operation of the pillowcase. The surface turning mechanism comprises a rotating table, a mounting frame two is arranged at the top of the rotating table, a plurality of connecting plates are horizontally arranged on the mounting frame two, the connecting plates are annularly and uniformly arranged on the mounting frame two, a linear drive module two is arranged below the connecting plates, and a hook claw is arranged on the moving part of the linear drive module two and faces outward. The discharging mechanism is arranged at the side of the surface turning mechanism and used for placing the turned pillowcase. The discharging mechanism comprises a storage rack, a linear drive module three is horizontally arranged above the storage rack through a rack two, and a clamping mechanism is outwardly arranged on the moving part of the linear drive module three.

[0007] As a preferred, the storage rack comprises a lifting device one, and a placement table is arranged at the top of the lifting device one. A laser range finder one is arranged above the placement table.

[0008] As a preferred, the insertion plate comprises a horizontal section, and an arc section extending obliquely upward is arranged at the rear side of the horizontal section.

[0009] As a preferred, the taking arm further comprises a mounting frame three, one end of the mounting frame three is vertically and slidably arranged on the mounting one, a telescopic cylinder one is arranged at the bottom of the mounting frame three, the extension end of the telescopic cylinder one is connected with the bottom surface of the mounting frame, the other end of the telescopic cylinder one is arranged on the rotating disc, the top surface of the mounting frame three is connected with the bottom surface of the arc section through a support, the other end of the horizontal section extends out of the mounting frame three, telescopic cylinders two are symmetrically arranged on the other two side portions of the mounting frame three, the extension end of the telescopic cylinder two horizontally faces outward and is perpendicular to the insertion plate, and the extension end of the telescopic cylinder two is provided with a supporting rod one.

[0010] As a preferred, the mounting frame three is in an I-shaped structure, a supporting plate is elastically and telescopically arranged at the bottom of the mounting frame three, and one end of the supporting plate outwardly bends upward.

[0011] As a preferred, a plurality of springs are arranged at the bottom surface of the mounting frame three, the other end of the spring is connected with the top of the supporting plate, a through hole is arranged at the end of the bottom surface of the mounting frame three, a guide column is arranged at the position corresponding to the through hole on the top surface of the supporting plate, and the guide column passes through the through hole.

[0012] As a preferred, the rotating disc and the rotating table are driven by a servo rotating disc motor.

[0013] As preferred, the opening direction of the hook is away from the material taking mechanism, and the opening direction of the clamping mechanism is toward the connecting plate.

[0014] As preferred, the two side portions of the connecting plate are symmetrically provided with a third telescopic cylinder, the extending end of the third telescopic cylinder is horizontally outward and perpendicular to the connecting plate, the extending end of the third telescopic cylinder is provided with a second supporting rod, and the outward end of the second supporting rod is curved and tapered.

[0015] As preferred, the bottom of the storage rack is provided with a second lifting mechanism, and the second rack is provided with a second laser range finder corresponding to the position of the storage rack.

[0016] Compared with the prior art, the present application has the beneficial effects that: The first supporting rod of the extraction arm and the second supporting rod of the turning mechanism can be adjusted in length, and the position of the hook can be adjusted, so that the pillowcase turning requirements of different specifications and sizes can be met without replacing equipment parts, thereby solving the poor adaptability problem of traditional equipment and improving the flexibility level of the production line.

[0017] The present application realizes unmanned operation in all processes from automatic lifting of the storage rack, automatic extraction of the material taking mechanism, rotation and turning of the turning mechanism to automatic stacking of the discharging mechanism, greatly reduces the labor intensity and improves the production efficiency.

[0018] The flat and smooth structure is adopted at the front end of the insertion plate of the extraction arm, and the end portion of the second supporting rod is designed as an arc-shaped tapered structure, so as to avoid scratching the fabric by sharp parts; the elastic telescopic design of the supporting plate can buffer the pressure during material taking, prevent the pillowcase from being wrinkled or damaged, and ensure the appearance quality of the product.

[0019] The present application realizes real-time and accurate detection of the material height by using the first and second laser range finders, ensures the accuracy of the material taking and discharging positions, and drives the rotating disc and the rotating table by the servo rotating disc motor, so as to improve the rotating positioning accuracy, the collaborative control of each executing element, and the overall operation stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a schematic diagram of the layout relationship between the storage rack and the material taking mechanism of the present application; Figure 2 Fig. 2 is a schematic diagram of the layout relationship between the material taking mechanism and the turning mechanism of the present application; Figure 3 Fig. 3 is a schematic diagram of the layout relationship between the turning mechanism and the discharging mechanism of the present application; Figure 4 Fig. 4 is a schematic diagram of the structure of the storage rack of the present application; Figure 5 Fig. 5 is a schematic diagram of the structure of the material taking mechanism of the present application; Figure 6 Fig. 6 is a schematic diagram of the structure of the extraction arm of the present application; Figure 7 It is the structure schematic view of the turnover mechanism of the application; Figure 8 It is the structure schematic view of the connecting plate of the application; Figure 9 It is Figure 8 It is the structure schematic view of the connecting plate of the application; Figure 10 It is the structure schematic view of the turnover mechanism of the application;

[0021] In the figure: 1, storage rack; 2, rack one; 3, linear drive module one; 4, rotating disc; 5, mounting frame one; 6, extraction arm; 7, plugboard; 8, rotating table; 9, mounting frame two; 10, connecting plate; 11, linear drive module two; 12, hook claw; 13, storage rack; 14, rack two; 15, linear drive module three; 16, clamping mechanism; 17, lifting device one; 18, placement table; 19, laser range finder one; 20, horizontal section; 21, arc section; 22, mounting frame three; 23, telescopic cylinder one; 24, support; 25, telescopic cylinder two; 26, brace one; 27, support plate; 28, spring; 29, through hole; 30, guide column; 31, servo rotating disc motor; 32, telescopic cylinder three; 33, brace two; 34, conical structure; 35, arc surface; 36, lifting mechanism two; 37, laser range finder two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0023] In the description of the application, it should be noted that the terms “upper”, “lower”, “inner”, “outer”, “top / bottom end” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0025] like Figures 1-10 As shown, in this embodiment, an automatic pillowcase flipping device includes a storage rack 1, a picking mechanism, a flipping mechanism, and a feeding mechanism. Each mechanism is controlled collaboratively by a Siemens S7-1200 series PLC. The storage rack 1 is used to place pillowcases to be flipped and includes a lifting device 17. The lifting device 17 adopts a ball screw lifting mechanism. A placement platform 18 is provided on the top of the lifting device 17. A laser rangefinder 19 is provided above the placement platform 18. Its laser beam is vertically irradiated on the pillowcase stacking surface of the placement platform 18. The laser rangefinder 19 detects the pillowcase stacking height in real time and controls the lifting device 17 to drive the placement platform 18 to rise and fall, ensuring that the picking height is always at the optimal position. The material handling mechanism is located at the rear of the storage rack 1 and is used to retrieve pillowcases from the storage rack 1. It includes a frame 2, a linear drive module 3 at the top of the frame 2, a turntable 4 on the moving part of the linear drive module 3, and a turntable 4 driven to rotate by a turntable motor 31. A mounting frame 5 is located at the top of the turntable 4, and two extraction arms 6 are evenly distributed on the mounting frame 5. The extraction arms 6 are longitudinally liftable on the mounting frame 5. The extraction arms 6 are arranged laterally and include a plate 7 and a mounting bracket 22. The front end of the plate 7 is flat with rounded edges, and the plate 7 includes a horizontal section 20. An arc-shaped section 21 extending obliquely upwards is located at the rear of the horizontal section 20. The mounting bracket 22 has an I-shaped structure, with one end vertically sliding on the mounting bracket 5. A telescopic cylinder 23 is located at the bottom of the mounting bracket 22. The extended end of mounting bracket 23 is connected to the bottom surface of mounting bracket 5, and the other end is set on turntable 4; the top surface of mounting bracket 22 is connected to the bottom surface of arc segment 21 through bracket 24, and the horizontal segment 20 extends out of the other end of mounting bracket 22; telescopic cylinders 25 are symmetrically arranged on the other two sides of mounting bracket 22, the extended end of telescopic cylinders 25 is horizontally outward and perpendicular to the insert plate 7, and the extended end is provided with support rod 26; a support plate 27 is elastically telescopically arranged at the bottom of mounting bracket 22, the outward end of the support plate 27 is bent upward, a number of springs 28 are arranged on the bottom surface of mounting bracket 22, the other end of the springs 28 is connected to the top of the support plate 27, a through hole 29 is provided at the bottom end of mounting bracket 22, and a guide post 30 is arranged on the top surface of support plate 27 corresponding to the through hole 29, the guide post 30 passes through the through hole 29; The flipping mechanism is located behind the material handling mechanism and is used for flipping the pillowcase. It includes a turntable 8, which is driven to rotate by a turntable motor 31. A mounting frame 9 is provided on the top of the turntable 8. Two connecting plates 10 are horizontally and symmetrically arranged on the mounting frame 9. A linear drive module 11 is provided below the connecting plate 10. The moving part of the linear drive module 11 is provided with outward-facing hooks 12. Telescopic cylinders 32 are symmetrically arranged on both sides of the connecting plate 10. The extended end of the telescopic cylinder 32 is horizontally outward and perpendicular to the connecting plate 10. A support rod 33 is provided at the extended end. The outward-facing end of the support rod 33 is bent outward and the end is a conical structure 34. The end of the conical structure 34 is an arc-shaped surface 35. The unloading mechanism is arranged on the side of the turning mechanism and is used for placing the turned pillowcase, comprising a storage rack 13, and the bottom of the storage rack 13 is provided with a lifting mechanism two 36; a linear drive module three 15 is arranged on the top of the storage rack 13 in the transverse direction through a rack two 14, and a clamping mechanism 16 is arranged outward on the moving part of the linear drive module three 15, the clamping mechanism 16 is a pneumatic gripper, and the rack two 14 is provided with a laser range finder two 37 at the position corresponding to the storage rack 13; the linkage of each mechanism is realized through a PLC control system, and the laser range finder one 19 and the laser range finder two 37 transmit detection signals to the PLC; the PLC controls the action time sequence of the lifting device one 17, the lifting mechanism two 36 and each linear drive module according to a preset program, so that the actions of material taking, turning and unloading are continuously connected.

[0026] The working principle of the present application is as follows: The present application takes the PLC control system as the core control unit to realize the cooperative action of each mechanism, and the overall working process is as follows: 1. The material storage and feeding stage: the turned pillowcases are stacked and placed on the placing table 18 of the material storage rack 1, the laser range finder one 19 detects the height of the pillowcase stack in real time and transmits the data to the PLC. When the pillowcase is extracted and the height is lower than the preset value, the lifting device one 17 is controlled by the PLC to drive the placing table 18 to rise, so that the uppermost pillowcase always maintains the best extraction height of the material taking mechanism, and continuous feeding is realized.

[0027] 2. The material taking and transferring stage: the linear drive module one 3 of the material taking mechanism is controlled by the PLC to drive the rotating disc 4 to move above the material storage rack 1, the telescopic cylinder one 23 is retracted to make the extraction arm 6 descend, the flat structure at the front end of the insertion plate 7 and the supporting plate 27 are pressed on the opening of the pillowcase, then the linear drive module one moves towards the pillowcase, so that the insertion plate 7 is inserted into the pillowcase, then the telescopic cylinder two 25 is extended, the supporting rod one 26 supports and fixes the two sides of the pillowcase, the telescopic cylinder one 23 is extended to lift the extraction arm 6, the rotating disc 4 is rotated by 180° to transfer the pillowcase to the receiving position of the turning mechanism, and the supporting plate 27 elastically holds the bottom of the pillowcase under the action of the spring 28.

[0028] 3. The turning operation stage: when the pillowcase is transferred to the turning mechanism, the linear drive module one moves towards the connecting plate, the linear drive module two 11 is controlled by the PLC to drive the hook 12 to extend and hook the edge of the opening of the pillowcase, and then the pillowcase is transferred to the connecting plate by pulling back, the telescopic cylinder three 32 is extended to make the supporting rod two 33 inserted into the pillowcase and support, then the rotating table 8 is rotated by 180° under the drive of the rotating disc motor 31 to point to the unloading mechanism; at the same time, the adjacent connecting plate 10 is synchronously rotated to the material taking mechanism position to receive the next pillowcase, and continuous turning is realized.

[0029] 4. The blank stacking stage: the PLC controls the clamping mechanism 16 to clamp the pillowcase. The linear drive module three 15 drives the pillowcase to move above the storage rack 13, the laser range finder two 37 detects the stacking height and feeds back to the PLC, and the PLC controls the lifting mechanism two 36 to drive the storage rack 13 to lower the corresponding height, so that the pillowcase is stably stacked, and the whole turning process is completed. The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and improvement concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. An automatic pillowcase turning device, characterized by, Including the storage rack (1) for placing the pillowcase to be turned over, the material taking mechanism is set up in the rear side of the storage rack (1) for extracting the pillowcase on the storage rack (1), the material taking mechanism includes the frame one (2), the top of frame one (2) is provided with linear drive module one (3), the moving part of linear drive module one (3) is provided with the rotary table (4), the top of rotary table (4) is provided with the mounting bracket one (5), the mounting bracket one (5) is uniformly provided with several extraction arms (6), the extraction arm (6) is longitudinally liftable and is arranged on the mounting bracket one (5), the extraction arm (6) is transversely arranged, the extraction arm (6) includes the plugboard (7), the front end of plugboard (7) is flat structure and the edge is smooth;The turning mechanism is set up in the rear side of the material taking mechanism for the turning operation of pillowcase, the turning mechanism includes the rotary table (8), the top of rotary table (8) is provided with the mounting bracket two (9), the mounting bracket two (9) is horizontally provided with several connecting plates (10), several connecting plates (10) are annularly and uniformly arranged on the mounting bracket two (9), the connecting plate (10) below is provided with linear drive module two (11), the moving part of linear drive module two (11) is provided with the claw (12) towards the outside;The blanking mechanism is set up in the side of the turning mechanism for placing the pillowcase that turns over, the blanking mechanism includes the storage rack (13), the top of storage rack (13) is transversely provided with linear drive module three (15) through the frame two (14), the moving part of linear drive module three (15) is provided with the clamping mechanism (16) towards the outside.

2. The automatic pillowcase turning device according to claim 1, characterized in that, The storage rack (1) includes lifting device one (17), the top of lifting device one (17) is provided with the placing table (18), the top of placing table (18) is provided with laser range finder one (19).

3. The automatic pillowcase turning device according to claim 1, characterized in that, The plugboard (7) includes horizontal section (20), the rear side of horizontal section (20) is provided with the arc section (21) extending to the oblique upper side.

4. An automatic pillowcase turning device according to claim 3, characterized in that, The extraction arm (6) further includes the mounting bracket three (22), one end of mounting bracket three (22) is vertically and slidingly arranged on the mounting bracket one (5), the bottom of mounting bracket three (22) is provided with telescopic cylinder one (23), the extension end of telescopic cylinder one (23) is connected with the bottom surface of mounting bracket one (5), the other end of telescopic cylinder one (23) is arranged on the rotary table (4), the top surface of mounting bracket three (22) is connected with the bottom surface of arc section (21) through the support (24), the horizontal section (20) extends from the other end of mounting bracket three (22), the other two sides of mounting bracket three (22) are symmetrically provided with telescopic cylinder two (25), the extension end of telescopic cylinder two (25) is horizontally and outwardly arranged and is perpendicular to the plugboard (7), the extension end of telescopic cylinder two (25) is provided with the support rod one (26).

5. An automatic pillowcase turning device according to claim 4, characterized in that, The mounting bracket three (22) is the I-shaped structure, the bottom of mounting bracket three (22) is elastically and telescopically provided with the supporting plate (27), the outward end of supporting plate (27) is curved upwards.

6. An automatic pillowcase turning device according to claim 5, characterized in that The lower bottom surface of the mounting frame three (22) is provided with a plurality of springs (28), the other end of the spring (28) is connected with the top of the support plate (27), the bottom end of the mounting frame three (22) is provided with a through hole (29), the top surface of the support plate (27) is provided with a guide column (30) at the position corresponding to the through hole (29), and the guide column (30) penetrates through the through hole (29).

7. The automatic pillowcase turning device according to claim 1, wherein The rotating disc (4) and the rotating table (8) are driven by a servo rotating disc motor (31).

8. The automatic pillowcase turning device according to claim 1, characterized in that, The opening direction of the hook claw (12) faces away from the material taking mechanism, and the opening direction of the clamping mechanism (16) faces the connecting plate (10).

9. The automatic pillowcase turning device according to claim 1, characterized in that, The two side parts of the connecting plate (10) are symmetrically provided with telescopic cylinders three (32), the extending end of the telescopic cylinder three (32) horizontally extends outward and is perpendicular to the connecting plate (10), the extending end of the telescopic cylinder three (32) is provided with a supporting rod two (33), the outward end of the supporting rod two (33) is curved outward, and the end part is a conical structure (34), the end part of the conical structure (34) is an arc surface (35).

10. The automatic pillowcase turning device according to claim 1, characterized in that, The bottom of the storage rack (13) is provided with a lifting mechanism two (36), and the rack two (14) is provided with a laser range finder two (37) at the position corresponding to the storage rack (13).

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