Mattress cover packaging machine for folding and packaging fitted covers

Abstract

The invention relates to the technical field of fitted cover folding, in particular to a fitted cover packaging machine for folded packaging of fitted covers, which comprises a folding and conveying device, a tiling platform, a clamping and discharging device and a fitted cover stacking and collecting device, and the tiling platform, the folding and conveying device and the clamping and discharging device are sequentially arranged and distributed. According to the fitted cover packaging machine for folding and packaging the fitted covers, stacked fitted covers are pressed through the fitted cover pressing mechanism, after the fitted covers are placed on the pressing plate, the pressing plate can be automatically pulled out in the downward extrusion process of the extrusion plate, the stacked fitted covers do not topple due to downward pressing of the extrusion plate, and after newly-placed fitted covers are also completely extruded, the folded fitted covers are automatically pulled out. And the pressing plate can be tightly pressed on the top of the stacked fitted sheets again, so that the stacked fitted sheets are tightly pressed and fixed, and the requirement that one bag contains multiple bags is met. And the final movement positions of the baffle and the pressing plate can be adjusted through the threaded pipe and the sleeve, so that the device can be suitable for fitted sheets with different widths.

Description

Technical Field

[0001] The present invention relates to the technical field of bed sheet folding, and particularly relates to a bed sheet packaging machine for folding and packaging bed sheets. Background Art

[0002] The bed sheet has a double-layer bottom opening structure, and an elastic band is provided at its bottom, which results in poor flatness when it is folded, and it is generally not suitable for mechanical packaging and folding. Even if mechanical folding is used, only single bed sheets can be mechanically stacked or bagged, because the final free form of the folded bed sheet is a triangular structure with one side upturned, and the upturned direction is the side of the opening after the final folding is completed. This also causes the lower layer to tilt and push down the upper layer when the bed sheets are stacked, resulting in inability to stack. And if the stacked bed sheets are flattened by extrusion so that they cannot bounce up, although the stacked bed sheets can be stabilized, when placing the next bed sheet, the originally stacked bed sheets will be toppled, and the stacking of bed sheets still cannot be achieved.

[0003] Therefore, it is desired to design a bed sheet packaging machine for folding and packaging bed sheets, which can fold and package bed sheets and stack the bed sheets after packaging is completed to meet the requirement of multiple bed sheets in one bag. Summary of the Invention

[0004] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a bed sheet packaging machine for folding and packaging bed sheets, which can fold and package bed sheets and stack the bed sheets after packaging is completed to meet the requirement of multiple bed sheets in one bag.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the present invention provides a fitted sheet packaging machine for folding and packaging fitted sheets, comprising a folding conveying device, a flat-laying platform, a clamping and unloading device and a fitted sheet stacking and collecting device, wherein the flat-laying platform, the folding conveying device and the clamping and unloading device are arranged and distributed in sequence, a conveying belt 1 is arranged on the flat-laying platform, the conveying belt 1 is used to convey the flat-laid fitted sheet to the folding conveying device, the folding conveying device is used to fold and shrink the fitted sheet, the fitted sheet stacking and collecting device is used to stack and collect the fitted sheet clamped by the clamping and unloading device, and the fitted sheet stacking and collecting device comprises an extrusion plate, a fitted sheet pressing mechanism, a pressing mechanism, a conveying belt 2, a lifting slide, and a horizontally movable slide The folding conveying device comprises a platform and a mounting frame, the mounting frame is located beside the folding conveying device, the clamping and unloading device and the pressing mechanism are both fixedly mounted on the horizontal conveying seat of the horizontal movable slide, the extrusion plate is fixedly mounted on the bottom of the pressing mechanism, the pressing mechanism is used to push the extrusion plate downward to extrude the fitted sheet, the conveyor belt 2 is located below the extrusion plate, the conveyor belt 2 is used to receive the fitted sheet clamped and transported by the clamping and unloading device, the conveyor belt 2 is fixedly mounted on the vertical conveying seat of the lifting slide, and whenever a fitted sheet is placed, the lifting slide drives the conveyor belt 2 to convey the thickness of a fitted sheet downward, the fitted sheet pressing mechanism is fixedly mounted on the mounting frame, and the fitted sheet pressing mechanism is used to press and fix the top fitted sheet after the extrusion plate is moved away.

[0006] Preferably, the fitted sheet pressing mechanism includes two symmetrically arranged single-sided pressing mechanisms, the two single-sided pressing mechanisms are fixedly mounted on the mounting frame, and the two single-sided pressing mechanisms are used to press the fitted sheet onto the conveyor belt 2, each single-sided pressing mechanism includes a swing arm, a pressure plate, a synchronous external pulling mechanism and an avoidance rotating block, the tail of the swing arm is rotatably mounted on the mounting frame, the avoidance rotating block is rotatably mounted on the end of the swing arm, one end of the avoidance rotating block is located below the orthographic projection of the extrusion plate, the hinge between the avoidance rotating block and the swing arm is located outside the orthographic projection of the extrusion plate, the synchronous external pulling mechanism is fixedly mounted on the mounting frame, the swing arm is transmission-connected to the synchronous external pulling mechanism, when the swing arm rotates downward, the synchronous external pulling mechanism pulls the pressure plate to move outward, the pressure plate is fixedly mounted on the displacement seat of the synchronous external pulling mechanism, the extrusion plate is provided with an avoidance notch 1 for avoiding the avoidance rotating block, and the extrusion plate is provided with an avoidance notch 1 for avoiding the avoidance rotating block There is an avoidance gap 2 for avoiding the pressure plate, and a pushing block and an elastic pushing mechanism are arranged on the extrusion plate. The pushing block is located above the avoidance gap 1, and the pushing block is used to contact the avoidance rotating block. The pushing block is fixedly installed on the displacement seat of the elastic pushing mechanism, and the elastic pushing mechanism is fixedly installed in the extrusion plate. The elastic pushing mechanism is used to pull the pushing block inward when the avoidance rotating block cannot be pushed by the pushing block. When the extrusion plate moves downward, the end of the pushing block contacts the avoidance rotating block and continues to push, so that the swing arm rotates downward, and the synchronous external pulling mechanism pulls the pressure plate outward. When the swing arm cannot rotate, the pressure plate is completely separated from the fitted sheet, the pushing block is pushed inward, and the elastic pushing mechanism is compressed. When the end of the pushing block is separated from the top of the avoidance rotating block, the multi-layer fitted sheet is completely compressed, and the synchronous external pulling mechanism pushes the swing arm to rotate upward, and the pressure plate is inserted to the top of the topmost fitted sheet.

[0007] Preferably, the fitted sheet stacking and collecting device also includes a fitted sheet limiting mechanism, which includes a staggered pushing mechanism, a guide seat, a connecting plate, two baffles and two guide pillars one, the guide seat is fixedly mounted on the mounting frame, the two guide pillars one are slidably connected to the guide seat, the connecting plate is fixedly connected to the two guide pillars one, the two baffles are respectively fixedly mounted on the ends of the two guide pillars one, the staggered pushing mechanism is fixedly mounted on the guide seat, one end of the two guide pillars one is transmission connected to the connecting plate, and the other end of the staggered pushing mechanism is transmission connected to the synchronous external pulling mechanism, when the pressing plate is pushed outward, the staggered pushing mechanism will push the guide pillar one inward through the power of the synchronous external pulling mechanism, and when the pressing plate moves downward to the preset final position, the side surfaces of the baffle fit against the two sides of the two fitted sheets.

[0008] Preferably, the synchronous outward pulling mechanism includes guide column 2, a mounting plate, a transmission column 1, a limit connecting plate and a reset spring. The pressure plate is fixedly mounted on the mounting plate. One end of the guide column 2 is fixedly connected to the mounting plate. The guide column 2 is slidably connected to the guide seat. The limit connecting plate is fixedly mounted on the guide column 2. The transmission column 1 is fixedly mounted on the limit connecting plate. The reset spring is sleeved on the guide column 2. The reset spring is used to provide an elastic force to move the mounting plate away from the guide seat. The hinge seat 1 is fixedly mounted on the mounting frame. The swing arm can be rotatably installed on the hinge seat 1. A waist-shaped hole 1 is provided on the hinge seat 1, and the transmission column 1 is inserted into the waist-shaped hole 1.

[0009] Preferably, the staggered pushing mechanism includes a rotating plate, a hinged seat 2, a transmission column 2 and a transmission column 3. The transmission column 2 is fixedly connected to the connecting plate, the transmission column 3 is fixedly connected to the mounting plate, the hinged seat 2 is fixedly installed on the guide seat, the middle and upper part of the rotating plate is hinged to the hinged seat 2, and the rotating plate is provided with a waist-shaped hole 2 for the sliding of the transmission column 2.

[0010] Preferably, a threaded tube is provided in the middle of the guide column one, and the guide column one is divided into two left and right sections along the threaded tube, and the two sections of the guide column one are engaged and connected with the connecting plate, a sleeve is fixedly provided on the mounting plate, a pressure plate is inserted in the sleeve, and a screw is provided on the top of the sleeve, the screw is engaged and installed on the top of the sleeve, and the bottom of the screw passes through the sleeve and contacts the pressure plate.

[0011] Preferably, the elastic pushing mechanism includes a resistance spring, a guide column three, a blocking plate and a guide plate, the guide plate is fixedly mounted on the extrusion plate, the guide column three is slidably connected to the limit connecting plate, the push block is fixedly mounted on one end of the guide column three, the blocking plate is fixedly mounted on the other end of the guide column three, the resistance spring is sleeved on the guide column three, and the resistance spring is used to provide an elastic force to push the block away from the guide plate.

[0012] Preferably, a stopper is fixedly provided on the swing arm to prevent the bottom of the rotating block from colliding with the stopper.

[0013] The beneficial effects of the present invention are as follows: the fitted sheet packaging machine for folding and packaging fitted sheets compresses the stacked fitted sheets through the fitted sheet pressing mechanism, and after the fitted sheet is placed on the pressing plate, the pressing plate can be automatically drawn out during the downward pressing of the pressing plate, and the stacked fitted sheets do not fall down due to the downward pressing of the pressing plate, and after the newly placed fitted sheet is also completely pressed, the pressing plate can be pressed again on the top of the stacked fitted sheets, thereby achieving the compression and fixation of the stacked fitted sheets, meeting the requirement of multiple packs in one bag. The final movement position of the baffle and the pressing plate can be adjusted through the threaded tube and the sleeve, so that the device can be suitable for fitted sheets of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0016] Figure 2 It is a partial three-dimensional structure diagram of the present invention.

[0017] Figure 3 It is a three-dimensional structure diagram of the bed sheet stacking and collecting device.

[0018] Figure 4 It is a partial front view of the present invention.

[0019] Figure 5 It is a schematic diagram of the installation state of the swing arm.

[0020] Figure 6 It is a three-dimensional structure diagram of the extrusion plate.

[0021] Figure 7 It is a three-dimensional structure diagram of the synchronous outward pulling mechanism and the bed sheet limiting mechanism.

[0022] Figure 8 It is a three-dimensional structure diagram of the misaligned pushing mechanism.

[0023] Figure 9 It is a partial three-dimensional structure diagram of the misaligned pushing mechanism.

[0024] Figure 10 For Figure 6 Local enlarged view of part A of

[0025] Figure 11 It is a schematic diagram of the positions of the avoidance rotating block and the stopper.

[0026] Description of the accompanying drawings: 1, folding conveying device; 2, paving platform; 2a, conveyor belt 1; 3, clamping and unloading device; 4, extrusion plate; 4a, avoidance gap 1; 4b, push block; 4c, elastic pushing mechanism; 4c1, resistance spring; 4c2, guide column 3; 4c3, blocking plate; 4c4, guide plate; 4d, avoidance gap 2; 5, bed sheet pressing mechanism; 5a, swing arm; 5b, pressing plate; 5c, synchronous external pulling mechanism; 5c1, guide column 2; 5c2, mounting plate; 5c3, transmission column 1; 5c4, limit 1. connecting plate; 5c5. reset spring; 5c6. hinged seat one; 5c7. sleeve; 5d. avoidance turn block; 5e. stop block; 6. bed sheet limiting mechanism; 6a. baffle plate; 6b. guide column one; 6c. wrong direction pushing mechanism; 6c1. turn plate; 6c2. hinged seat two; 6c3. transmission column two; 6c4. transmission column three; 6d. guide seat; 6e. connecting plate; 6f. threaded pipe; 10. bed sheet; 11. pressing mechanism; 12. conveyor belt two; 13. lifting slide; 14. horizontal moving slide; 15. mounting frame. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment: The present invention provides a fitted sheet packaging machine for folding and packaging a fitted sheet, such as Figures 1-3As shown in the figure, it includes a folding conveyor device 1, a flat laying platform 2, a clamping and blanking device 3, and a fitted sheet palletizing and collecting device. The flat laying platform 2, the folding conveyor device 1, and the clamping and blanking device 3 are arranged in sequence. First, workers lay the fitted sheet flat on the conveyor belt 2a of the flat laying platform 2. The flat laying platform 2 is provided with a conveyor belt 2a, and the conveyor belt 2a is used to convey the laid flat fitted sheet into the folding conveyor device 1. The folding conveyor device 1 is used to fold and reduce the fitted sheet. In order to facilitate the clamping of the clamping and blanking device 3, for the fitted sheet after the last folding process, its opening direction faces the flat laying platform 2, which can ensure that its closed direction faces the clamping and blanking device 3. Since the closed direction is an acute angle structure, the fitted sheet can avoid contacting the clamping part of the clamping and blanking device 3 during the conveying process, ensuring the smoothness and accuracy of the fitted sheet conveying. The fitted sheet palletizing and collecting device is used to palletize and collect the fitted sheets clamped by the clamping and blanking device 3 to ensure that multiple layers of fitted sheets can be palletized. Different from fabrics such as towels or clothes, the double-layer structure of the fitted sheet itself causes a small amount of gas to be stored inside, and it is difficult to discharge this gas after folding. Moreover, even if this gas is finally squeezed out, due to the large folding height of the fitted sheet, it will also cause the fitted sheet to bulge upward. Therefore, there are relatively large problems in using machinery to palletize and collect the fitted sheets.

[0029] The fitted sheet stacking and collecting device comprises a squeezing plate 4, a fitted sheet pressing mechanism 5, a pressing mechanism 11, a conveyor belt 12, a lifting slide 13, a horizontal movable slide 14 and a mounting frame 15. The mounting frame 15 is located beside the folding conveying device 1. The clamping and unloading device 3 and the pressing mechanism 11 are both fixedly mounted on the horizontal conveying seat of the horizontal movable slide 14. The squeezing plate 4 is fixedly mounted on the bottom of the pressing mechanism 11. The pressing mechanism 11 is used to push the squeezing plate 4 downward to squeeze the fitted sheet 10 so that the inside of the fitted sheet 10 is Exhaust gas is discharged, the conveyor belt 12 is located below the extrusion plate 4, the conveyor belt 12 is used to receive the bed sheet 10 clamped and transported by the clamping and unloading device 3, the conveyor belt 12 is fixedly installed on the vertical conveying seat of the lifting slide 13, and every time a bed sheet 10 is placed, the lifting slide 13 drives the conveyor belt 12 to transport the thickness of a bed sheet 10 downward, and the bed sheet pressing mechanism 5 is fixedly installed on the mounting frame 15. The bed sheet pressing mechanism 5 is used to press and fix the top bed sheet 10 after the extrusion plate 4 is moved away. The specific working process of the fitted sheet stacking and collecting device is as follows: first, the lifting slide 13 drives the conveyor belt 12 to move downward by the thickness of a fitted sheet 10 to be transported. Since the fitted sheet pressing mechanism 5 is installed on the mounting frame 15, it will not move with the conveyor belt 12. However, at this time, the fitted sheet pressing mechanism 5 keeps pressing the topmost transported fitted sheet 10, because the transported fitted sheet 10 itself will rebound upward, and the thickness of a fitted sheet 10 will be reduced, and the topmost fitted sheet 10 will still be in conflict with the pressing plate 4. When the fitted sheet 10 to be transported is clamped by the clamping and unloading device 3, the horizontally movable slide 14 pulls the clamping and unloading device 3 and the pressing mechanism 11 to move horizontally. When the fitted sheet 10 to be transported moves to above the pressing arm of the fitted sheet pressing mechanism 5, the clamping and unloading device 3 releases the clamping of the fitted sheet 10 to be transported, and the fitted sheet 10 to be transported falls on the pressing arm of the fitted sheet pressing mechanism 5. Then the horizontally movable slide 14 is reset, so that the squeezing plate 4 moves again to just above the fitted sheet 10 to be transported, and then the squeezing plate 4 is pressed downward by the pressing mechanism 11. During the squeezing process of the squeezing plate 4, the pressing arm of the fitted sheet pressing mechanism 5 is pulled out from the topmost transported fitted sheet 10, so that the transported fitted sheet 10 bounces up and collides with the fitted sheet 10 to be transported. As the squeezing plate 4 continues to press downward, all the fitted sheets 10 can be compressed together. After the compression is completed, the fitted sheet pressing mechanism 5 pushes the pressing arm to contact the topmost fitted sheet 10 , so that all the fitted sheets 10 are pressed onto the conveyor belt 2 12 .

[0030] In order to shorten the time of the device, the pressing mechanism 11 adopts a pressing cylinder, because the pressing height of the squeezing plate 4 is constant, and the pressing cylinder can shorten the time of squeezing the squeezing plate 4 downward, ensuring the efficient movement of the device. However, this will cause the bed sheet pressing mechanism 5 to move faster, and it needs to respond quickly within two seconds of the squeezing plate 4 moving. If it is controlled by electricity, it will not be able to meet the speed requirement, and because the bed sheet 10 will fall on the pressing arm of the bed sheet pressing mechanism 5, when the pressing arm moves, it will cause the pressing arm to drive the bed sheet 10 to move, and finally the bed sheet 10 will move left and right. For this reason, Figure 4 , Figure 5 and Figure 6 As shown, the fitted sheet pressing mechanism 5 includes two symmetrically arranged single-sided pressing mechanisms, the two symmetrically arranged single-sided pressing mechanisms are fixedly mounted on the mounting frame 15, and the two symmetrically arranged single-sided pressing mechanisms are used to press the fitted sheet 10 onto the conveyor belt 12, each symmetrically arranged single-sided pressing mechanism includes a swing arm 5a, a pressing plate 5b, a synchronous external pulling mechanism 5c and an avoidance rotating block 5d, the tail of the swing arm 5a is rotatably mounted on the mounting frame 15, the avoidance rotating block 5d is rotatably mounted on the end of the swing arm 5a, the avoidance rotating block 5d cannot be rotated downward, one end of the avoidance rotating block 5d is located below the positive projection of the extrusion plate 4, the hinged joint of the avoidance rotating block 5d and the swing arm 5a is located outside the positive projection of the extrusion plate 4, and the synchronous external pulling mechanism 5c is located outside the positive projection of the extrusion plate 4. The outward pulling mechanism 5c is fixedly installed on the mounting frame 15, and the swing arm 5a is transmission-connected with the synchronous outward pulling mechanism 5c. When the swing arm 5a rotates downward, the synchronous outward pulling mechanism 5c pulls the pressure plate 5b to move outward, and the pressure plate 5b is fixedly installed on the displacement seat of the synchronous outward pulling mechanism 5c. The extrusion plate 4 is provided with an avoidance gap 1 4a for avoiding the avoidance rotating block 5d, and the extrusion plate 4 is provided with an avoidance gap 2 4d for avoiding the pressure plate 5b, so that when the extrusion plate 4 presses the topmost fitted sheet 10, the pressure plate 5b can be inserted into the avoidance gap 2 4d to block the topmost fitted sheet 10, and at the same time, when the extrusion plate 4 is lifted upward, the extrusion plate 4 will not collide with the pressure plate 5b. The extrusion plate 4 is provided with a push block 4b and an elastic push mechanism 4c, the push block 4b is located above the avoidance gap 4a, the push block 4b is used to contact the avoidance rotating block 5d, the push block 4b is fixedly installed on the displacement seat of the elastic push mechanism 4c, the elastic push mechanism 4c is fixedly installed in the extrusion plate 4, and the elastic push mechanism 4c is used to pull the push block 4b inward when the avoidance rotating block 5d cannot be pushed by the push block 4b; the pressing plate 5b is the pressing arm of the bed sheet pressing mechanism 5.

[0031] When the squeezing plate 4 moves downward, the end of the push stopper 4b contacts the avoidance block 5d and continues to push, so that the swing arm 5a rotates downward, and the synchronous outward pulling mechanism 5c pulls the pressing plate 5b outward; that is, by pulling the pressing plate 5b outward, the pressing plate 5b can release the pressure on the transported fitted sheet 10, and the mattress can be transported from the bed sheet 10 to the bed sheet 10. Figure 4 It can be seen from the initial contact position that the distance between the squeezing plate 4 and the pressing plate 5b is small. After the pressing plate 5b is fully pulled out, the gap will be even smaller. This smaller gap can ensure that the fitted sheet 10 to be transported and the transported fitted sheet 10 can contact with the squeezing plate 4, thereby preventing the fitted sheet 10 from tipping over.

[0032] When the swing arm 5a cannot rotate, the pressing plate 5b is completely separated from the fitted sheet 10. As the squeezing plate 4 continues to descend, the push block 4b is pushed inward, and the elastic pushing mechanism 4c is compressed. The buffer distance is that when the pressing plate 5b is completely withdrawn, the squeezing plate 4 still has a descending distance. Because when the pressing plate 5b is completely withdrawn, the squeezing plate 4 cannot just completely compress the multi-layer fitted sheet 10 because a gap must be reserved for the pressing plate 5b to be withdrawn.

[0033] When the end of the push block 4b is separated from the top of the avoidance rotating block 5d, the multi-layered fitted sheet 10 is completely compressed, the synchronous external pulling mechanism 5c pushes the swing arm 5a to rotate upward, and the pressing plate 5b is inserted to the top of the topmost fitted sheet 10. When the avoidance rotating block 5d is not in contact with the push block 4b, the pressing plate 4 also compresses the multi-layered fitted sheet 10 to the limit position, and the synchronous external pulling mechanism 5c pushes the swing arm 5a to rotate through the elastic force previously stored, that is, the swing arm 5a is reset, and the pressing plate 5b is inserted to the top of the fitted sheet 10, that is, the fitted sheet pressing mechanism 5 realizes the locking of the multi-layered fitted sheet 10 again. When the pressing plate 4 moves upward subsequently, the multi-layered fitted sheet 10 will not move upward with it.

[0034] During the upward movement of the extrusion plate 4, the push block 4b is bound to contact the avoidance rotating block 5d, and when in contact, the push block 4b can push the avoidance rotating block 5d to rotate upward, that is, the avoidance rotating block 5d can avoid the push block 4b, wherein after the push block 4b passes through the avoidance rotating block 5d, the avoidance rotating block 5d will be reset by gravity, and it is only necessary to ensure that the center of gravity of the avoidance rotating block 5d is on the right side of the hinge. The avoidance rotating block 5d can only rotate downward, and it is only necessary to set a block on the swing arm 5a to support and limit the bottom of the avoidance rotating block 5d.

[0035] By the above method, the bed sheet pressing mechanism 5 can be ensured to move faster and react quickly within two seconds of the movement of the squeezing plate 4. The reaction process includes the rapid withdrawal of the pressing plate 5b during the compression of the squeezing plate 4 and the rapid re-insertion of the pressing plate 5b after the compression of the squeezing plate 4 is completed.

[0036] In order to prevent the fitted sheet 10 to be transported from moving left and right during the withdrawal of the pressing plate 5b, Figure 7 As shown, the fitted sheet stacking and collecting device also includes a fitted sheet limiting mechanism 6, which includes a staggered pushing mechanism 6c, a guide seat 6d, a connecting plate 6e, two baffles 6a and two guide posts 1-6b. The guide seat 6d is fixedly mounted on the mounting frame 15, the two guide posts 1-6b are slidably connected to the guide seat 6d, the connecting plate 6e is fixedly connected to the two guide posts 1-6b, the two baffles 6a are fixedly mounted on the ends of the two guide posts 1-6b, respectively, the staggered pushing mechanism 6c is fixedly mounted on the guide seat 6d, one end of the two guide posts 1-6b is transmission-connected to the connecting plate 6e, and the other end of the staggered pushing mechanism 6c is transmission-connected to the synchronous external pulling mechanism 5c. When the pressing plate 5b is pushed outward, the staggered pushing mechanism 6c will push the guide post 1-6b inward through the power of the synchronous external pulling mechanism 5c. When the pressing plate 5b moves downward to the preset final position, the side of the baffle 6a fits against the two sides of the two fitted sheets 10. When the pressing plate 5b moves, there is a probability that the folding conveying device 1 will move to the left or right. At this time, in order to solve this problem, when the pressing plate 5b moves, the synchronous outward pulling mechanism 5c will move along with it, and the synchronous outward pulling mechanism 5c will drive the wrong direction pushing mechanism 6c to move, and the wrong direction pushing mechanism 6c will push the connecting plate 6e to move inward, so that the connecting plate 6e pushes the guide post 1 6b to move inward, so that the baffle 6a can push and position the sides of the two fitted sheets 10, so that the left and right positions of the fitted sheets 10 can be positioned. And during the movement of the pressing plate 5b, the baffle 6a can push because the fitted sheet 10 is not completely squeezed by the squeezing plate 4, so that the fitted sheet 10 can be pushed and positioned by the baffle 6a.

[0037] In order to enable the pressing plate 5b to move horizontally, and when the swing arm 5a rotates, the synchronous pulling mechanism 5c can be driven to move, and in order to enable the pressing plate 5b to be quickly inserted into the top of the multi-layer fitted sheet 10 after the swing arm 5a is released, for this purpose, Figure 7As shown in the figure, the synchronous outward pulling mechanism 5c includes a second guide post 5c1, a mounting plate 5c2, a first transmission post 5c3, a limit connecting plate 5c4, and a return spring 5c5. The pressing plate 5b is fixedly installed on the mounting plate 5c2. One end of the second guide post 5c1 is fixedly connected to the mounting plate 5c2, and the second guide post 5c1 is slidably connected to the guide seat 6d. The limit connecting plate 5c4 is fixedly installed on the second guide post 5c1, the first transmission post 5c3 is fixedly installed on the limit connecting plate 5c4, and the return spring 5c5 is sleeved on the second guide post 5c1. The return spring 5c5 is used to provide an elastic force for the mounting plate 5c2 to move away from the guide seat 6d. The first hinge seat 5c6 is fixedly installed on the mounting frame 15, and the swing arm 5a is rotatably installed on the first hinge seat 5c6. A first kidney-shaped hole is formed in the first hinge seat 5c6, and the first transmission post 5c3 is inserted into the first kidney-shaped hole. When the swing arm 5a moves downward, the swing arm 5a will push the first transmission post 5c3 to slide outward along the first kidney-shaped hole. At the same time, the first transmission post 5c3 will pull the limit connecting plate 5c4 to move, so that the limit connecting plate 5c4 pulls the pressing plate 5b to move outward through the second guide post 5c1 and the mounting plate 5c2, so that the pressing plate 5b can be separated from the fitted sheet 10. After the swing arm 5a is released, through the elastic force of the return spring 5c5, the pressing plate 5b will be quickly reset and inserted into the tops of multiple fitted sheets 10 to ensure the positioning of multiple fitted sheets 10.

[0038] In order to drive the baffle 6a to move while the synchronous outward pulling mechanism 5c is moving, and to ensure that the left and right sides of the fitted sheet 10 can be quickly positioned within a short time when the pressing plate 4 compresses downward, for this reason, as Figure 8 and Figure 9 shown, the misaligned pushing mechanism 6c includes a rotating plate 6c1, a second hinge seat 6c2, a second transmission post 6c3, and a third transmission post 6c4. The second transmission post 6c3 is fixedly connected to the connecting plate 6e, the third transmission post 6c4 is fixedly connected to the mounting plate 5c2, the second hinge seat 6c2 is fixedly installed on the guide seat 6d, the upper middle part of the rotating plate 6c1 is hinged to the second hinge seat 6c2, and a second kidney-shaped hole for the second transmission post 6c3 to slide is formed in the rotating plate 6c1. When the mounting plate 5c2 moves, the mounting plate 5c2 will push the rotating plate 6c1 to rotate along the second hinge seat 6c2 through the third transmission post 6c4, so that the rotating plate 6c1 pushes the second transmission post 6c3 to move horizontally, that is, the second transmission post 6c3 can be made to push the connecting plate 6e to move horizontally, so that the connecting plate 6e drives the baffle 6a to move horizontally, that is, it can be realized that the baffle 6a can make a quick response while the synchronous outward pulling mechanism 5c is moving, shortening the time.

[0039] Since the fitted sheet 10 has different models, its length and width after folding will also be different. However, for the change in the length direction of the fitted sheet 10, it is only necessary to adjust the position of the horizontal moving slide 14. For the change in the width direction of the fitted sheet 10, the final positions of the baffle 6a and the pressure plate 5b need to be changed. For this purpose, Figure 7 As shown, a threaded tube 6f is provided in the middle of the guide post 1 6b, and the guide post 1 6b is divided into two sections along the threaded tube 6f, and the two sections of the guide post 1 6b are meshed and connected with the connecting plate 6e. By rotating the threaded tube 6f, the threaded tube 6f can extend or shorten the distance between the two sections of the guide post 1 6b through meshing, and the length position of the baffle 6a can be changed, so that the final position of the movement of the baffle 6a is changed to be suitable for mattress covers 10 of different widths. At the same time, a sleeve 5c7 is fixedly provided on the mounting plate 5c2, and the pressing plate 5b is inserted into the sleeve 5c7, and a screw is provided on the top of the sleeve 5c7, and the screw is meshed and installed on the top of the sleeve 5c7, and the bottom of the screw passes through the sleeve 5c7 and contacts the pressing plate 5b. When the position of the baffle 6a is changed, the position of the pressing plate 5b also needs to be changed, because the width of the fitted sheet 10 increases, which causes the pressing plate 5b to remain pressed on the top of the fitted sheet 10 when the pressing plate 5b moves outward to the final position. Therefore, in this way, the pressing plate 5b can be separated from the fitted sheet 10. When adjusting the baffle 6a and the pressing plate 5b, it is best to move them to the final position of the baffle 6a to ensure that the end of the pressing plate 5b is level with the end of the baffle 6a.

[0040] like Figure 10 As shown, the elastic pushing mechanism 4c includes a resisting spring 4c1, a guide post 4c2, a blocking plate 4c3 and a guide plate 4c4, the guide plate 4c4 is fixedly mounted on the extrusion plate 4, the guide post 4c2 is slidably connected with the limit connecting plate 5c4, the push block 4b is fixedly mounted on one end of the guide post 4c2, the blocking plate 4c3 is fixedly mounted on the other end of the guide post 4c2, the resisting spring 4c1 is sleeved on the guide post 4c2, and the resisting spring 4c1 is used to provide an elastic force for the push block 4b to be away from the guide plate 4c4. When the swing arm 5a cannot be pushed and rotated further, the push block 4b will be pushed, so that the resisting spring 4c1 is compressed, that is, the push block 4b can avoid the baffle 6a.

[0041] like Figure 11 As shown, a stopper 5e is fixedly arranged on the swing arm 5a, and the bottom of the avoidance rotating block 5d conflicts with the stopper 5e. The stopper 5e blocks the avoidance rotating block 5d, so that the avoidance rotating block 5d can only rotate upwards, but cannot rotate downwards.

[0042] During use, when the bed sheet 10 to be transported moves above the pressing arm of the bed sheet pressing mechanism 5, the clamping and blanking device 3 releases the clamping of the bed sheet 10 to be transported, and the bed sheet 10 to be transported will fall onto the pressing arm of the bed sheet pressing mechanism 5. Subsequently, the horizontal movement slide table 14 is reset, so that the extrusion plate 4 moves back to directly above the bed sheet 10 to be transported, and then the pressing mechanism 11 presses the extrusion plate 4 downward.

[0043] During the downward movement of the extrusion plate 4, when the pushing block 4b contacts the avoiding rotating block 5d, it will push the bed sheet pressing mechanism 5 to move, so that the pressing plate 5b is withdrawn from the bed sheet 10. When the avoiding rotating block 5d and the swing arm 5a can no longer rotate downward, the elastic pushing mechanism 4c will be compressed, so that the pushing block 4b is separated from the avoiding rotating block 5d. When separated, the multi-layer bed sheet 10 is compressed to the final position, and at the same time, the synchronous pulling mechanism 5c pushes the pressing plate 5b to extend out to limit and fix the multi-layer bed sheet 10. During the downward rotation of the swing arm 5a, the baffle 6a will move inward to limit and adjust the left and right sides of the bed sheet 10.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A fitted sheet packaging machine for folding and packaging fitted sheets, characterized in that: The invention comprises a fitted sheet stacking and collecting device, which is used for stacking and collecting fitted sheets. The fitted sheet stacking and collecting device comprises an extrusion plate (4), a fitted sheet pressing mechanism (5), a pressing mechanism (11), a second conveyor belt (12), a lifting slide (13), a horizontal movable slide (14) and a mounting frame (15). The mounting frame (15) is located beside the folding conveying device (1). The clamping and unloading device (3) and the pressing mechanism (11) are both fixedly mounted on a horizontal conveying seat of the horizontal movable slide (14). The extrusion plate (4) is fixedly mounted on the bottom of the pressing mechanism (11). The pressing mechanism (11) is used to push the extrusion plate downward. (4) to extrude the fitted sheet (10), the second conveyor belt (12) is located below the extrusion plate (4), the second conveyor belt (12) is used to receive the fitted sheet (10) clamped and transported by the clamping and unloading device (3), the second conveyor belt (12) is fixedly mounted on the vertical conveying seat of the lifting slide (13), and whenever a fitted sheet (10) is placed, the lifting slide (13) drives the second conveyor belt (12) to convey the thickness of a fitted sheet (10) downward, the fitted sheet pressing mechanism (5) is fixedly mounted on the mounting frame (15), and the fitted sheet pressing mechanism (5) is used to press and fix the topmost fitted sheet (10) after the extrusion plate (4) is moved away.

2. A fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 1, characterized in that: The invention also comprises a folding conveying device (1), a flattening platform (2), and a clamping and unloading device (3). The flattening platform (2), the folding conveying device (1), and the clamping and unloading device (3) are arranged in sequence. A conveying belt 1 (2a) is provided on the flattening platform (2). The conveying belt 1 (2a) is used to convey the flattened fitted sheet to the folding conveying device (1). The folding conveying device (1) is used to fold and shrink the fitted sheet.

3. A fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 2, characterized in that: The fitted sheet pressing mechanism (5) comprises two symmetrically arranged single-sided pressing mechanisms, the two single-sided pressing mechanisms are fixedly mounted on a mounting frame (15), and the two single-sided pressing mechanisms are used to press the fitted sheet (10) onto a second conveyor belt (12), each single-sided pressing mechanism comprises a swing arm (5a), a pressure plate (5b), a synchronous external pulling mechanism (5c), and an avoidance turning block (5d), the tail of the swing arm (5a) is rotatably mounted on the mounting frame (15), the avoidance turning block (5d) is rotatably mounted on the end of the swing arm (5a), one end of the avoidance turning block (5d) is located below the positive projection of the extrusion plate (4), the hinge between the avoidance turning block (5d) and the swing arm (5a) is located outside the positive projection of the extrusion plate (4), the synchronous external pulling mechanism (5c) is fixedly mounted on the mounting frame (15), the swing arm (5a) is transmission-connected to the synchronous external pulling mechanism (5c), and when the swing arm (5a) When rotating downward, the synchronous external pulling mechanism (5c) pulls the pressure plate (5b) to move outward, the pressure plate (5b) is fixedly mounted on the displacement seat of the synchronous external pulling mechanism (5c), the extrusion plate (4) is provided with an avoidance notch 1 (4a) for avoiding the avoidance rotating block (5d), and the extrusion plate (4) is provided with an avoidance notch 2 (4d) for avoiding the pressure plate (5b), the extrusion plate (4) is provided with a push block (4b) and an elastic pushing mechanism (4c), the push block (4b) is located above the avoidance notch 1 (4a), the push block (4b) is used to contact the avoidance rotating block (5d), the push block (4b) is fixedly mounted on the displacement seat of the elastic pushing mechanism (4c), the elastic pushing mechanism (4c) is fixedly mounted in the extrusion plate (4), and the elastic pushing mechanism (4c) is used to pull the push block (4b) inward when the avoidance rotating block (5d) cannot be pushed by the push block (4b); When the extrusion plate (4) moves downward, the end of the push stopper (4b) contacts the avoidance rotating block (5d) and continues to push, causing the swing arm (5a) to rotate downward, and the synchronous external pulling mechanism (5c) pulls the pressure plate (5b) outward; When the swing arm (5a) cannot rotate, the pressing plate (5b) is completely separated from the fitted sheet (10), the push block (4b) is pushed inward, and the elastic push mechanism (4c) is compressed; When the end of the push stopper (4b) is separated from the top of the avoidance rotating block (5d), the multi-layered fitted sheet (10) is completely compressed, the synchronous external pulling mechanism (5c) pushes the swing arm (5a) to rotate upward, and the pressing plate (5b) is inserted to the top of the topmost fitted sheet (10).

4. The fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 3, characterized in that: The fitted sheet stacking and collecting device further comprises a fitted sheet limiting mechanism (6), the fitted sheet limiting mechanism (6) comprising a staggered pushing mechanism (6c), a guide seat (6d), a connecting plate (6e), two baffles (6a) and two guide posts (6b); the guide seat (6d) is fixedly mounted on a mounting frame (15); the two guide posts (6b) are slidably connected to the guide seat (6d); the connecting plate (6e) is fixedly connected to the two guide posts (6b); the two baffles (6a) are respectively fixedly mounted on the ends of the two guide posts (6b); The driving mechanism (6c) is fixedly mounted on the guide seat (6d); one end of the two guide posts (6b) is transmission-connected to the connecting plate (6e); the other end of the misaligned driving mechanism (6c) is transmission-connected to the synchronous external pulling mechanism (5c); when the pressing plate (5b) is pushed outward, the misaligned driving mechanism (6c) pushes the guide post (6b) inward through the power of the synchronous external pulling mechanism (5c); when the pressing plate (5b) moves downward to a preset final position, the side surface of the baffle (6a) fits against the two sides of the two fitted sheets (10).

5. The fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 4, characterized in that: The synchronous external pulling mechanism (5c) comprises a guide column 2 (5c1), a mounting plate (5c2), a transmission column 1 (5c3), a limit connecting plate (5c4) and a return spring (5c5); the pressure plate (5b) is fixedly mounted on the mounting plate (5c2); one end of the guide column 2 (5c1) is fixedly connected to the mounting plate (5c2); the guide column 2 (5c1) is slidably connected to the guide seat (6d); the limit connecting plate (5c4) is fixedly mounted on the guide column 2 (5c1); the transmission column 1 (5c 3) is fixedly mounted on the limit connecting plate (5c4), the return spring (5c5) is sleeved on the guide column 2 (5c1), the return spring (5c5) is used to provide an elastic force for the mounting plate (5c2) to move away from the guide seat (6d), the hinge seat 1 (5c6) is fixedly mounted on the mounting frame (15), the swing arm (5a) is rotatably mounted on the hinge seat 1 (5c6), the hinge seat 1 (5c6) is provided with a waist-shaped hole 1, and the transmission column 1 (5c3) is inserted into the waist-shaped hole 1.

6. The fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 5, characterized in that: The misaligned driving mechanism (6c) comprises a rotating plate (6c1), a second hinge seat (6c2), a second transmission column (6c3) and a third transmission column (6c4); the second transmission column (6c3) is fixedly connected to the connecting plate (6e); the third transmission column (6c4) is fixedly connected to the mounting plate (5c2); the second hinge seat (6c2) is fixedly mounted on the guide seat (6d); the middle and upper part of the rotating plate (6c1) is hinged to the second hinge seat (6c2); the rotating plate (6c1) is provided with two waist-shaped holes for the second transmission column (6c3) to slide; and the rotating plate (6c1) is provided with two waist-shaped holes for the second transmission column (6c3) to slide.

7. A fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 6, characterized in that: A threaded tube (6f) is provided in the middle of the guide column 1 (6b), and the guide column 1 (6b) is divided into two left and right sections along the threaded tube (6f), and the two sections of the guide column 1 (6b) are both meshed and connected with the connecting plate (6e). At the same time, a sleeve (5c7) is fixedly provided on the mounting plate (5c2), and the pressing plate (5b) is inserted into the sleeve (5c7), and a screw is provided on the top of the sleeve (5c7), and the screw is meshed and installed on the top of the sleeve (5c7), and the bottom of the screw passes through the sleeve (5c7) and contacts the pressing plate (5b).

8. The fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 7, characterized in that: The elastic pushing mechanism (4c) comprises a resisting spring (4c1), a guide column three (4c2), a blocking plate (4c3) and a guide plate (4c4); the guide plate (4c4) is fixedly mounted on the extrusion plate (4); the guide column three (4c2) is slidably connected to the limit connecting plate (5c4); the push block (4b) is fixedly mounted on one end of the guide column three (4c2); the blocking plate (4c3) is fixedly mounted on the other end of the guide column three (4c2); the resisting spring (4c1) is sleeved on the guide column three (4c2); and the resisting spring (4c1) is used to provide an elastic force for the push block (4b) to move away from the guide plate (4c4).

9. The fitted sheet packaging machine for folding and packaging a fitted sheet as claimed in claim 8, characterized in that: A stopper (5e) is fixedly provided on the swing arm (5a) to prevent the bottom of the rotating block (5d) from coming into contact with the stopper (5e).

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