Automatic bed cover unfolding system

Abstract

The invention provides an automatic bed cover unfolding system. The automatic bed cover unfolding system comprises an unfolding mechanism, an air suction conveying belt and a feeding mechanism. The unfolding mechanism comprises a multi-axis moving system, at least four sets of material taking mechanisms which define a rectangle are installed on the multi-axis moving system, each material taking mechanism is provided with a clamping jaw support and a material taking clamping jaw, and idler wheels are installed on the clamping jaw supports; the air suction conveying belt is located below the unfolding mechanism. The feeding mechanism comprises a conveying rail and a grabbing mechanism installed on the conveying rail in a sliding mode, the grabbing mechanism comprises a spring clamping jaw, the spring clamping jaw comprises a fixed clamping block and a rotary clamping jaw rotationally installed on the fixed clamping block, and a reset spring is connected between the rotary clamping jaw and the fixed clamping block. And when the material taking mechanism descends, the roller drives the rotating clamping jaw to rotate and opens the spring clamping jaw. According to the automatic bed cover unfolding system, the bed cover can be automatically unfolded and laid on the conveying belt, and follow-up folding treatment is facilitated.

Description

Technical Field

[0001] The invention relates to a fitted sheet, and in particular to an automatic unfolding system for a fitted sheet. Background Art

[0002] A fitted sheet is a cloth cover that is directly put on the mattress. Its main purpose is to wrap the mattress to provide protection and fixation. During the use of the fitted sheet, it is often inconvenient to store and carry. Traditional fitted sheets are large in size when not in use, not easy to fold, and often difficult to restore to their original shape after folding, which affects the user experience. In addition, the material of the fitted sheet is mostly cotton or other fabrics. Long-term folding and storage may cause damage to the fibers in the folds, reducing its service life. Therefore, the market is in urgent need of a solution that can effectively solve the problem of fitted sheet storage. Summary of the invention

[0003] The present invention provides a fitted sheet automatic unfolding system, which comprises: an unfolding mechanism, an air suction conveyor belt and a feeding mechanism;

[0004] The unfolding mechanism includes a multi-axis moving system, on which at least four sets of material taking mechanisms are installed in a rectangular shape. The material taking mechanisms clamp the four corners of the fitted sheet and move in two axes in the horizontal and vertical directions on the multi-axis moving system to lay the fitted sheet flat on the suction conveyor belt. The material taking mechanisms are provided with a clamping claw bracket and a material taking claw, and a roller is installed on the clamping claw bracket;

[0005] The suction conveyor belt is located below the unfolding mechanism, and the suction conveyor belt includes a conveyor belt bracket, on which a conveyor belt is rotatably arranged, and the conveyor belt bracket is provided with a plurality of suction holes on the same plane as the conveyor belt;

[0006] The feeding mechanism includes a conveying track and a grabbing mechanism slidably mounted on the conveying track, the grabbing mechanism includes a spring clamp, the spring clamp includes a fixed clamp block and a rotating clamp rotatably mounted on the fixed clamp block, and a reset spring is connected between the rotating clamp and the fixed clamp block;

[0007] When the material taking mechanism descends, the roller drives the rotating jaw to rotate and open the spring jaw.

[0008] Furthermore, the multi-axis moving system includes a vertical Z-axis moving mechanism and a horizontal X-axis moving mechanism and a Y-axis moving mechanism, and the material taking mechanism is installed on the Z-axis moving mechanism.

[0009] Further, the X-axis moving mechanism includes two sets of parallel distributed synchronous belt mechanisms, the synchronous belt mechanism includes a driving wheel, a driven wheel and a synchronous belt, a synchronous shaft is connected between the driving wheels or between the driven wheels, and a set of Y-axis moving mechanism is connected between the upper half and the lower half of the two synchronous belts respectively;

[0010] The synchronous shaft realizes the synchronous rotation of the two synchronous belts, and the two sets of Y-axis moving mechanisms slide relative to or towards each other in the X direction.

[0011] Furthermore, the Y-axis moving mechanism includes a Y-axis slide rail, which is fixedly connected between the upper halves or between the halves of the two synchronous belts through a fixed block, and a Z-axis moving mechanism is slidably installed on the Y-axis slide rail. The Z-axis moving mechanism is installed with a drive motor for driving the Z-axis moving mechanism to slide along the Y-axis slide rail along the Y-axis.

[0012] Furthermore, the Z-axis moving mechanism includes a vertical electric cylinder, and the clamping jaw bracket is connected to a driving chain, and the driving chain drives the clamping jaw bracket to slide and cooperate with the vertical electric cylinder in the Z-axis direction.

[0013] Furthermore, the material taking clamp is a cylinder clamp.

[0014] Furthermore, the grabbing mechanism includes two pairs of spring clamps, and the fixed clamping block is U-shaped.

[0015] Furthermore, each pair of spring clamps is respectively fixed at two ends of a connecting rod, and the connecting rod is slidably mounted on the conveying track.

[0016] The invention provides an automatic unfolding system for a fitted sheet, which can unfold the fitted sheet and lay it on a conveyor belt through a multi-axis moving system to drive a feeding mechanism to move in multiple axes, so as to facilitate subsequent folding. In addition, considering that the fitted sheet needs to be hung on the feeding mechanism manually, the clamping claw of the feeding mechanism is designed as a semi-automatic design without power drive, so as to avoid accidental injury to workers by the clamping claw with active power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of an automatic unfolding system for a fitted sheet provided by the present invention;

[0019] Figure 2 is a schematic diagram of an air suction conveyor belt;

[0020] Figure 3 is a schematic diagram of the unfolding mechanism;

[0021] Figure 4 is a schematic diagram of the feeding mechanism;

[0022] Figure 5A schematic diagram of the clamping claws of the unfolding mechanism grabbing the fitted sheet on the feeding mechanism;

[0023] Figure 6 It is a schematic diagram of the closed state of the spring clamp of the feeding mechanism;

[0024] Figure 7 It is a schematic diagram of the spring clamping claw of the feeding mechanism in the open state;

[0025] Figure 8 It is a schematic diagram of the spring clamps of the material taking mechanism and the material feeding mechanism in the unmatched state;

[0026] Fig. 9 It is a schematic diagram of the roller of the material taking mechanism cooperating with the spring clamping claw and opening the spring clamping claw;

[0027] Fig.10 Schematic diagram of the spring clamp in the open and closed states. DETAILED DESCRIPTION

[0028] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0029] In order to fully understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0030] The present invention provides a fitted sheet automatic unfolding system, which includes an unfolding mechanism 100, a suction conveyor belt 200 and a feeding mechanism 300.

[0031] Expanding mechanism 100

[0032] The unfolding mechanism 100 includes a multi-axis moving system 110 , on which four sets of material taking mechanisms 120 are mounted in a rectangular shape.

[0033] The multi-axis moving system 110 includes a vertical Z-axis moving mechanism 113 and a horizontal X-axis moving mechanism 111 and a Y-axis moving mechanism 112 . The material picking mechanism 120 is installed on the Z-axis moving mechanism 113 .

[0034] like Figure 3As shown, the X-axis moving mechanism 111 includes two sets of parallel distributed synchronous belt mechanisms 111-1, the synchronous belt mechanism 111-1 includes a driving wheel 111-2, a driven wheel 111-3 and a synchronous belt 111-4, a synchronous shaft 111-5 is connected between the driving wheels 111-2, and a set of Y-axis moving mechanism 112 is connected between the upper halves and the lower halves of the two synchronous belts 111-4 respectively, and the Y-axis moving mechanism 112 is fixedly connected to the upper half or the lower half of the synchronous belt 111-4 through a fixed block 112-2.

[0035] The synchronous shaft 111-5 is connected to the driving motor, and the driving motor drives the two driving wheels 111-2 to rotate through the synchronous shaft 111-5, so as to realize the synchronous rotation of the two synchronous belts 111-4, and the two sets of Y-axis moving mechanisms 112 are respectively connected between the upper half and the lower half of the two synchronous belts 111-4. Therefore, when the two synchronous belts 111-4 rotate, they drive the two sets of Y-axis moving mechanisms 112 to slide relative to or towards each other in the X direction.

[0036] The Y-axis moving mechanism 112 includes a Y-axis slide rail 112-1, which is fixedly connected between the upper halves or between the halves of the two synchronous belts 111-4. A Z-axis moving mechanism 113 is slidably installed on the Y-axis slide rail 112-1, and the Z-axis moving mechanism 113 is installed with a driving motor for driving the Z-axis moving mechanism 113 to slide along the Y-axis slide rail on the Y-axis.

[0037] The Z-axis moving mechanism 113 includes a vertical electric cylinder 113 - 1 , and the material picking mechanism 120 is slidably matched with the vertical electric cylinder 113 - 1 in the Z-axis direction, and the material picking mechanism 120 is driven by the chain 113 - 2 to perform the lifting and lowering movement of the Z-axis.

[0038] Preferably, the material taking mechanism 120 is provided with a clamping jaw support 122 and a material taking clamping jaw 123, on which a roller 121 is mounted. The clamping jaw support 122 is fixedly connected to the driving chain 113-2, and the material taking clamping jaw 123 is a cylinder clamping jaw.

[0039] Suction conveyor belt 200

[0040] The suction conveyor belt 200 includes a conveyor belt bracket 201 , on which a conveyor belt 202 is rotatably arranged, and the conveyor belt bracket 201 is provided with a plurality of suction holes 203 which are in the same plane as the conveyor belt 202 .

[0041] Feeding mechanism 300

[0042] like Figure 4As shown, the feeding mechanism 300 includes a conveying track 310 and a grabbing mechanism 320 slidably mounted on the conveying track; the grabbing mechanism 320 includes two pairs of spring clamps 321 in a rectangular shape, the spring clamps 321 include a U-shaped fixed clamp block 321-1 and a rotating clamp 321-2 rotatably mounted on the fixed clamp block 321-1, and a return spring 321-3 is connected between the rotating clamp 321-2 and the fixed clamp block 321-1. Each pair of spring clamps 321 is fixed at both ends of a connecting rod 322, and the connecting rod 322 is slidably mounted on the conveying track 310.

[0043] The working process of the present invention is as follows: the rotating clamping claw 321-2 is manually pressed to open the spring clamping claw 321, and then a corner of the fitted sheet 1 is inserted into the opening of the U-shaped fixed clamping block 321-1, and then the rotating clamping claw 321-2 is released. Under the action of the reset spring 321-3, the rotating clamping claw 321-2 is automatically reset to clamp the fitted sheet 1 on the spring clamping claw 321. Figure 6-7 After the four corners of the fitted sheet 1 are hung on the four spring clamps of the feeding mechanism 300 , the feeding mechanism 300 moves along the conveying track 310 to the bottom of the unfolding mechanism 100 .

[0044] The four sets of material taking mechanisms 120 of the unfolding mechanism 100 descend until the fitted sheet 1 is located at the opening of the material taking jaws, and the material taking jaws close to grab the fitted sheet 1. Then the material taking mechanism 120 continues to descend, and during the descending process, the roller 121 of the jaw bracket 122 presses the rotating jaw 321-2 and rotates it, thereby opening the spring jaw 321 (such as Fig.10 As shown), the feeding mechanism 300 is separated from the fitted sheet, thereby transferring the fitted sheet grabbed by the feeding mechanism 300 to the picking mechanism of the unfolding mechanism 100.

[0045] The synchronous shaft 111-5 drives the two synchronous belts 111-4 to rotate synchronously, so that the Y-axis moving mechanism 112 slides away from each other and spreads the fitted sheet in the X direction. Then, the Z-axis moving mechanism 113 on the Y-axis moving mechanism 112 moves in the Y direction and spreads the fitted sheet in the Y direction, and the spread of the fitted sheet is completed.

[0046] Each of the material taking mechanisms 120 descends synchronously to lay the unfolded fitted sheet on the suction conveyor belt 200. The suction conveyor belt 200 absorbs the fitted sheet through the negative pressure provided by the suction holes 203 to keep it in the unfolded state for subsequent folding. The material taking mechanism 120 releases the fitted sheet, returns to the initial position and continues to grab the fitted sheet on the feeding mechanism.

[0047] The advantages of the present invention are:

[0048] 1. High degree of automation reduces the tediousness of manual operation and improves work efficiency.

[0049] 2. Reasonable structural design ensures the stability and accuracy of the fitted sheet during transfer and unfolding.

[0050] 3. High safety. The fitted sheet is fixed on the spring clamp by manual operation. In order to avoid the automatic clamp causing damage to workers, the spring clamp that needs manual operation is designed as a fully mechanical design. After pressing and rotating the clamp to open the spring clamp, put a corner of the fitted sheet into the opening of the fixed clamp block. After releasing the clamp, the clamp automatically closes to fix the fitted sheet. In the subsequent automatic operation of the unfolding mechanism, the spring clamp can be opened in the process of the material picking mechanism descending to grab the fitted sheet, and the feeding mechanism and the fitted sheet can be separated without manual intervention, further ensuring personal safety.

[0051] 4. Through the negative pressure adsorption of the suction conveyor belt, the fitted sheet can be kept flat before folding, avoiding the formation of wrinkles and improving the use effect of the fitted sheet.

[0052] 5. The automatic unfolding system of the fitted sheet of the present invention has good versatility and can be applied to fitted sheets of different sizes and thicknesses, and has strong adaptability.

[0053] In summary, the automatic unfolding system of the fitted sheet of the present invention not only improves the convenience of operation, but also ensures the flatness of the fitted sheet before use, and has high practical value and market application prospects.

[0054] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A system for automatically unfolding a fitted sheet, characterized in that: The bed sheet automatic unfolding system comprises: an unfolding mechanism (100), an air suction conveyor belt (200) and a feeding mechanism (300); The unfolding mechanism (100) comprises a multi-axis moving system (110), on which at least four sets of material taking mechanisms (120) are mounted in a rectangular shape, the material taking mechanisms (120) clamp the four corners of the fitted sheet and perform multi-axis movement in horizontal and vertical directions on the multi-axis moving system (110) so as to lay the fitted sheet flat on the suction conveyor belt (200), the material taking mechanism (120) is provided with a clamping claw bracket (122) and a material taking clamping claw (123), and a roller (121) is mounted on the clamping claw bracket (122); The suction conveyor belt (200) is located below the unfolding mechanism (100), and the suction conveyor belt (200) comprises a conveyor belt bracket (201), a conveyor belt (202) is rotatably arranged on the conveyor belt bracket (201), and the conveyor belt bracket (201) is provided with a plurality of suction holes (203) on the same plane as the conveyor belt (202); The feeding mechanism (300) comprises a conveying track (310) and a grabbing mechanism (320) slidably mounted on the conveying track, the grabbing mechanism (320) comprises a spring clamp (321), the spring clamp (321) comprises a fixed clamp block (321-1) and a rotating clamp (321-2) rotatably mounted on the fixed clamp block (321-1), and a return spring (321-3) is connected between the rotating clamp (321-2) and the fixed clamp block (321-1); When the material taking mechanism (120) descends, the roller (121) drives the rotating clamp (321-2) to rotate and open the spring clamp (321).

2. The automatic unfolding system for a fitted sheet according to claim 1, characterized in that: The multi-axis moving system (110) comprises a vertical Z-axis moving mechanism (113) and a horizontal X-axis moving mechanism (111) and a Y-axis moving mechanism (112), and the material picking mechanism (120) is installed on the Z-axis moving mechanism (113).

3. The automatic unfolding system for a fitted sheet as claimed in claim 2, characterized in that: The X-axis moving mechanism (111) comprises two sets of synchronous belt mechanisms (111-1) distributed in parallel, the synchronous belt mechanism (111-1) comprises a driving wheel (111-2), a driven wheel (111-3) and a synchronous belt (111-4), a synchronous shaft (111-5) is connected between the driving wheels (111-2) or between the driven wheels (111-3), and a set of Y-axis moving mechanism (112) is respectively connected between the upper halves and the lower halves of the two synchronous belts (111-4); The synchronous shaft (111-5) enables the two synchronous belts (111-4) to rotate synchronously, and the two sets of Y-axis moving mechanisms (112) to slide relative to or towards each other in the X direction.

4. The automatic unfolding system for a fitted sheet as claimed in claim 3, characterized in that: The Y-axis moving mechanism (112) comprises a Y-axis slide rail (112-1), the Y-axis slide rail (112-1) is fixedly connected between the upper halves or between the halves of two synchronous belts (111-4) through a fixed block (112-2), a Z-axis moving mechanism (113) is slidably mounted on the Y-axis slide rail (112-1), and the Z-axis moving mechanism (113) is mounted with a driving motor for driving the Z-axis moving mechanism (113) to slide along the Y-axis slide rail along the Y-axis.

5. The automatic unfolding system of a fitted sheet as claimed in claim 4, characterized in that: The Z-axis moving mechanism (113) includes a vertical electric cylinder (113-1), and the clamping jaw bracket (122) is connected to a driving chain (113-2), and the driving chain (113-2) drives the clamping jaw bracket (122) to slide and cooperate with the vertical electric cylinder (113-1) in the Z-axis direction.

6. The automatic unfolding system for a fitted sheet as claimed in claim 5, characterized in that: The material taking clamping claw (123) is a cylinder clamping claw.

7. The automatic unfolding system for a fitted sheet according to claim 1, characterized in that: The grabbing mechanism (320) comprises two pairs of spring clamping claws (321), and the fixed clamping block (321-1) is U-shaped.

8. The automatic unfolding system of a fitted sheet as claimed in claim 7, characterized in that: Each pair of spring clamping claws (321) is respectively fixed to the two ends of a connecting rod (322), and the connecting rod (322) is slidably mounted on the conveying track (310).

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