CN103863630A - Method and device for folding light thin-wall material - Google Patents

Abstract

A thin-walled lightweight material folding method and folding device, the method part includes the following steps: flatly spread the material to be folded on a platform, place a grabbing air cylinder with a first one-way air hole that can only inhale air on the One end of the material to be folded is gradually approaching the material to be folded. When one end of the material to be folded is adsorbed on the grabbing air cylinder, the grabbing air cylinder is self-propelled and the material to be folded is wound on the grabbing air cylinder. Then the grabbing air cylinder stops rotating and the The grab air cylinder wrapped around the object to be folded is transferred to another space for release and extrusion molding, and a folding device corresponding to the method is disclosed. The present invention realizes multi-layer folding by winding first and then pressing, which changes the mechanical folding method that requires multiple foldings, and greatly improves the folding efficiency.

Description

A thin-walled lightweight material folding method and folding device

technical field

The proposal relates to the technical field of folding and sorting equipment and methods for thin-walled lightweight materials (such as disposable film gloves, foot covers, headgear, etc.), specifically a thin-walled lightweight material folding method and a folding device.

Background technique

At present, for the folding of some thin-walled and lightweight materials, the folding packaging technology is relatively backward. For example, disposable gloves or shower caps or disposable foot covers and other irregularly shaped items are basically manually folded into a certain shape to reduce the volume. A lot of manpower and material resources are wasted in the transmission to the next packaging link.

In order to reduce the packaging volume, the existing thin-walled lightweight material folding technology folds the thin-walled materials separately and then folds them in half to form a multi-layer folding effect. There are also mechanical equipment for operations, but this type of folding machine requires more complicated requirements , expensive, high cost; cumbersome actions in the individual folding process, consume a lot of time and energy, low efficiency, which also increases production costs.

Contents of the invention

In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a method for folding thin-walled lightweight materials, which can realize multi-layer folding at one time, greatly improves the folding efficiency compared with the existing folding methods, and provides such a A folding device.

The technical scheme that the present invention solves its technical problem adopts is:

A thin-walled lightweight material folding method is characterized in that it comprises the following steps:

Step 1, spread the materials to be folded on a platform for subsequent grabbing actions,

Step 2: Place a grab air cylinder with a first one-way air hole that can only inhale air inwardly on one end of the material to be folded and gradually approach the material to be folded. When one end of the material to be folded is adsorbed on the grab air cylinder, The grabbing cylinder is self-propelled and the material to be folded is wound onto the grabbing cylinder, and then the grabbing cylinder stops rotating, completing a grabbing and winding action,

Step 3, transfer the grabbing air cylinder wrapped around the object to be folded to another space, the space is provided with pressure plates arranged in parallel up and down, and the grabbing air cylinder starts to reverse outwards through the second one-way air hole that can only go out. Blow air to the pulse type, so that the material to be folded is separated from the grab air cylinder by creating a gap, then the grab air cylinder stops blowing and withdraws from the parallel platen, and then the two parallel platens press the cylindrical material to be folded into a sheet, through extrusion Press to create the effect of multiple folds.

Further, in step 3, while the second one-way air hole blows air outward, it also includes an action of using a manipulator to assist in fixing the material to be folded. The manipulator is formed by two arc-shaped shielding bodies, And the two sides of the self-grabbing air cylinder are close to the grabbing air cylinder, so that the material to be folded is filled in the circular through hole composed of two shielding bodies. Because of the shielding bodies at both ends, the thin-walled material will not be blown away, and the cylinder is always kept shape, when the second one-way air hole stops blowing, the two shielding bodies automatically withdraw from the parallel platen.

A thin-walled lightweight material folding device is characterized in that it includes

Conveyor belt, the conveyor belt used to carry the materials to be folded moves in one direction at a constant speed, and the conveyor belt takes the materials to be folded from one station to another station during the movement,

The grabbing air cylinder adsorption and release unit includes a swing rod, a grabbing air cylinder, a positive pressure air source and a negative pressure air source. The grabbing air cylinder straddles the conveyor belt and is placed above the conveyor belt so that the distance between the grabbing air cylinder and the transmission belt is It is low enough to meet the requirements of allowing the material to be folded to pass through and to be able to absorb the material to be folded. The grab air cylinder is connected to the positive pressure air source and the negative pressure air source through a rotary joint, a three-way pipe, and a valve. , it connects with the negative pressure air source when the grabbing air cylinder sucks air, and connects with the positive pressure air source when the grabbing air cylinder blows air, so as to realize the actions of grabbing and releasing respectively, and the grabbing air cylinder is fixed on an electric spindle , can be rotated to complete an action of winding while absorbing, the electric spindle is fixed on a swing rod, and the swing rod is used for support,

Pressing plate mechanism, the pressing plate mechanism includes a second conveyor belt arranged behind the conveyor belt and a pressing plate capable of compressing the cylindrical material to be folded on the second conveyor belt, pressing down the pressing plate can squeeze the cylindrical flexible body into sheets, forming small volume folds,

The swing rod in the adsorption and release unit of the grabbing air cylinder is pivotally connected to the frame, and a first cylinder for driving the swing rod to swing is arranged between the two, so that the two limit positions of the grabbing air cylinder are respectively On the conveyor belt and the second conveyor belt.

Further, an air blowing hole is provided on the pressing plate, and the air blowing hole is connected with a positive pressure air source, and is used to assist the material to be folded to fall off from the grabbing air cylinder.

It also includes a manipulator, which includes a pair of symmetrically arranged shielding bodies and a driving mechanism that drives the shielding bodies to close and separate. The shielding body has an annular cavity composed of several flexible rubber strips, and the shielding body The body is assembled with the frame through the driving mechanism.

The driving mechanism is a cylinder linkage mechanism.

The driving mechanism is a telescopic cylinder.

Further, the pressing plate is located above the second conveyor belt, and the pressing plate can move up and down driven by the second cylinder.

Further, the pressing plate is located on the side above the second conveyor belt, and the pressing plate is driven by a rotatable driving mechanism to rotate at a certain angle.

The beneficial effect of the invention is that multi-layer folding is realized by winding first and then pressing, which changes the mechanical folding method that requires multiple foldings, and greatly improves the folding efficiency. A one-way air nozzle is used in the folding process, which can absorb well and achieve good winding. In the process of unwinding, reverse pulse blowing is carried out. Due to the winding structure, there is a certain degree of winding between each other. Therefore, a certain gap can be achieved for separation, which is convenient for the subsequent decanting process. The device structure of the method is relatively simple and is convenient for implementation.

Description of drawings

Figure 1 is a schematic diagram of grabbing the air cylinder.

Figure 2 is one of the schematic diagrams of the transfer process of grabbing the air cylinder.

Figure 3 is the second schematic diagram of the transfer process of grabbing the air cylinder.

Fig. 4 is a sectional perspective view of the grab air cylinder.

FIG. 5 is a partially enlarged view of A in FIG. 4 .

Figure 6 is the opening of the principle diagram of the one-way air nozzle.

Fig. 7 is the closing of the schematic diagram of the one-way air nozzle.

Fig. 8 is a schematic diagram of the suction action of grabbing the air cylinder.

Fig. 9 is a schematic diagram of the blowing action of grabbing the air cylinder.

Fig. 10 is the material to be folded rolled into a tube.

Fig. 11 is a perspective view of the suction and release unit of the grab air cylinder.

FIG. 12 is a full sectional view of FIG. 11 .

Fig. 13 is a transfer structure diagram of the grab air cylinder in the second embodiment.

Fig. 14 is a schematic diagram of the function of the blocking body in the second embodiment.

Fig. 15 is a perspective view of the blocking body.

Fig. 16 is a front view of the shielding body.

In the figure: 11 conveyor belt, 12 second conveyor belt, 13 pressure plate, 21 swing rod, 22 electric spindle, 23 first cylinder, 3 grabbing cylinder, 31 rotary joint, 32 coupling, 33 through hole, 34 long hole , 341 first one-way air nozzle, 342 second one-way air nozzle, 4 blocking body, 41 flexible rubber strip, 5 materials to be folded.

Detailed ways

As shown in Figures 1 to 12, a thin-walled lightweight material folding device includes

The conveyor belt 11 is used to carry the material to be folded 5 and moves in one direction at a constant speed, and is used to carry and transport the material to be folded. A second conveyor belt 12 is arranged on the rear side of the conveyor belt 11 for placing and conveying the folded materials. The two belts are arranged in staggered layers, which can save space. Of course, it can also be set at the same level.

The suction and release unit of the grab air cylinder includes a swing rod 21, an electric spindle 22, a grab air cylinder 3, a positive pressure air source and a negative pressure air source. The swing rod 21 is a rigid bracket, one end of which is pivotally connected to the frame through a round pin On the other end of the free end, an electric spindle 22 is fixed by a fastening screw, and a first cylinder 23 that drives the swing rod to swing is provided between the swing rod and the frame, and can be driven by the telescopic action of the first cylinder 23. The pendulum 21 swings at a certain angle, and the two limit positions of the swing are located on the conveyor belt 11 and the second conveyor belt 12 respectively. The gas cylinder can realize the conversion of the spatial position. The above-mentioned grabbing air cylinder 3 straddles the conveyor belt and is placed above the conveyor belt 11. The grabbing air cylinder is a cylinder with both ends blocked, and the inner cavity is an air flow channel. The through pipe is connected with the positive pressure air source and the negative pressure air source at the same time, and through the switching of the valve, the grabbing air cylinder has the action of inhaling and exhaling. At the same time, grabbing the air cylinder has an autopropagation action. Specifically, an electric spindle is provided on the swing rod 21, and one end of the grabbing air cylinder 3 is fixed on the output shaft of the electric spindle 22 through a coupling 32, and can be driven by the electric spindle. Realize the rotation of grabbing air cylinder. In order to cooperate with the rotation, an annular groove is provided on the grasping air cylinder 3, and several through holes 33 are arranged in the circumferential direction in the annular groove, and a rotary joint is sleeved at the annular groove to form the above-mentioned ventilation structure, so that the grasping The gas cylinder can also produce pulsed air supply action during the rotation process, forming a pulsed rotary joint 31. In order to increase air tightness, a mechanical labyrinth seal can be used at the joint of the rotary joint. Evenly distributed rectangular strip holes 34 are arranged in the circumferential direction of the grab cylinder, and a one-way air nozzle is installed in the long hole 34. The one-way air nozzle is made of rubber and has a one-way valve, similar to a one-way valve. When installing, one is installed in the way of only inhaling air, which is the first one-way air nozzle 341, and the rest is installed in the way of exhaling air outward, forming the second one-way air nozzle 342, see Figure 4 and Figure 5 for details middle. When the grab air cylinder is connected to the positive pressure air source, the second one-way air nozzle 342 works to form an air outlet action. When the grab air cylinder is connected to the negative pressure air source, the first one-way air nozzle 341 works to form an air suction action.

Platen mechanism, the platen mechanism comprises the second conveyer belt 12 and the press plate 13 that are arranged on the upper rear of the conveyer belt, the second conveyer belt 12 is positioned at the upper rear of the conveyer belt 11, when the first air cylinder drives the fork to swing, the grab air cylinder can be transferred to At the station below the platen, the transfer of the grabbing cylinder is completed.

The working process is as follows:

Step 1, lay the material 5 to be folded on the conveyor belt 11, and move forward along with the conveyor belt,

Step 2, place the grabbing air cylinder of a first one-way air hole 341 on one end of the material to be folded and gradually approach the material to be folded, the valve connected to the negative pressure air source is opened, and the electric spindle 22 starts to self-propagate at the same time, when the material to be folded When one end is adsorbed on the grabbing cylinder, the material to be folded is wound onto the grabbing cylinder along with the self-propagation of the grabbing cylinder, forming an action of adsorption and winding until it is completely wound.

Step 3, the first air cylinder 23 operates, and transfers the grabbing air cylinder wrapped around the material 5 to be folded to the compression station below the pressing plate, and the grabbing air cylinder starts outwards through the second one-way air hole 342 that can only output air outwards Reverse pulse air blowing, the material to be folded is separated from the grasping cylinder due to the gap between them. Since the material to be folded is in a occlusal relationship, and the air blowing is a pulse-type air outlet, it will not be blown apart. Then Grab the inflator to stop blowing air and withdraw the parallel platen at the same time, the upper platen 13 descends, and then press the cylindrical material to be folded into a sheet.

Embodiment 2, as shown in Figures 13 to 17,

The difference from Example 1 is:

It also includes a pair of symmetrically arranged shielding bodies 4 and a link mechanism to form a substantially expandable manipulator. There is an annular cavity composed of several flexible rubber strips 41 in the shielding body to form a barrier to cylindrical materials. , to prevent being blown away and deformed, and the shielding body is assembled with the frame through a linear drive mechanism. The shielding body forms a simple manipulator through a linear drive mechanism, which can be opened when not in use, and can be closed after use to form an O-shaped space.

Simultaneously, as Fig. 3, the second conveyor belt is arranged on the rear side of the conveyor belt, so the swing bar needs to swing 180 degrees, for this reason the pressing plate is arranged on the side, and can rotate to form a compression action.

In step 3, while blowing air from the one-way air hole, an action of auxiliary fixing of the material to be folded is also included. In the through hole formed by two shielding bodies, since there are shielding bodies at both ends, the thin-walled material will not be blown away, and the cylindrical shape will always be maintained. When the air outlet unidirectional air hole stops blowing, the shielding body will automatically withdraw from the parallel platen.

Embodiment 3, there is an air blowing hole on the pressure plate, and the air blowing hole is connected with a positive pressure air source. When in use,

In step 3, while blowing air from the air outlet unidirectional air hole, the blowing air on the pressure plate blows outward to form a blowing action, which is equivalent to forming a pneumatic auxiliary hand-held action, so that the thin-walled material will not It is blown open and always maintains a cylindrical shape. When the air outlet unidirectional air hole and the blowing air of the pressure plate stop blowing at the same time, the shielding body will automatically withdraw from the parallel pressure plate.

The above-mentioned core actions include three actions of winding, transferring, and compressing, and the above-mentioned purpose can be achieved through these three actions.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, those skilled in the art may make various modifications and improvements to the present invention. All should expand in the scope of protection as defined in the claims of the present invention.

Claims (10)

1. A kind of thin-walled lightweight material folding method is characterized in that, comprises the steps: Step 1, spread the materials to be folded on a platform, Step 2: Place a grab air cylinder with a first one-way air hole that can only inhale air inwardly on one end of the material to be folded and gradually approach the material to be folded. When one end of the material to be folded is adsorbed on the grab air cylinder, The grabbing air cylinder is self-propelled and the material to be folded is wound on the grabbing air cylinder, and then the grabbing air cylinder stops rotating, Step 3, transfer the grabbing air cylinder wrapped around the object to be folded to another space, the space is provided with pressure plates arranged in parallel up and down, and the grabbing air cylinder starts to reverse outwards through the second one-way air hole that can only go out. Blow air to the pulse type, so that the material to be folded is separated from the grasping air cylinder by a gap, then the grasping air cylinder stops blowing and withdraws from the parallel platen, and then the two parallel platens press the cylindrical material to be folded into a sheet. 2. A thin-walled lightweight material folding method according to claim 1, characterized in that, in step 3, while the second one-way air hole blows air outwards, it also includes a process of using a manipulator to assist the folded material Fixed action, the manipulator is formed by two arc-shaped shielding bodies, and is close to the grabbing air cylinder from both sides of the grabbing air cylinder, so that the material to be folded is filled in the circular through hole formed by the two shielding bodies. When the second one-way air hole stops blowing air, the two shielding bodies are automatically withdrawn from the parallel pressing plate. 3. A thin-walled lightweight material folding device, characterized in that it comprises a conveyor belt, the conveyor belt used to carry the materials to be folded moves in one direction at a constant speed, The grab air cylinder adsorption and release unit includes a swing rod, a grab air cylinder, a positive pressure air source and a negative pressure air source. The grab air cylinder straddles the conveyor belt and is placed above the conveyor belt, and the inner cavity of the grab air cylinder passes through in turn The rotary joint, the tee pipe and the valve are simultaneously connected with the positive pressure air source and the negative pressure air source, and the grab air cylinder is fixed on an electric spindle, and the electric spindle is fixed on a swing rod, A pressing plate mechanism, the pressing plate mechanism includes a second conveyor belt arranged behind the conveyor belt and a pressing plate capable of compressing the cylindrical material to be folded on the second conveyor belt, The swing rod in the adsorption and release unit of the grabbing air cylinder is pivotally connected to the frame, and a first cylinder for driving the swing rod to swing is arranged between the two, so that the two limit positions of the grabbing air cylinder are respectively On the conveyor belt and the second conveyor belt. 4 . The thin-walled lightweight material folding device according to claim 3 , wherein an air blowing hole is provided on the pressing plate, and the air blowing hole is connected to a positive pressure air source. 5. A thin-walled lightweight material folding device according to claim 3, further comprising a manipulator, said manipulator comprising a pair of symmetrically arranged shielding bodies and a driving mechanism for driving the shielding bodies to close and separate, There is an annular cavity formed by several flexible rubber strips in the shielding body, and the shielding body is assembled with the frame through a driving mechanism. 6 . The thin-walled lightweight material folding device according to claim 5 , wherein the driving mechanism is a cylinder linkage mechanism. 7. A thin-walled lightweight material folding device according to claim 5, wherein the driving mechanism is a telescopic cylinder. 8 . The thin-walled lightweight material folding device according to claim 3 , wherein the pressing plate is located above the second conveyor belt, and the pressing plate can move up and down driven by the second air cylinder. 9. A thin-walled lightweight material folding device according to claim 3, wherein the pressing plate is located on the side above the second conveyor belt, and the pressing plate is driven by a rotatable driving mechanism to rotate for a certain period of time. angle. 10. A thin-walled lightweight material folding device according to claim 3, characterized in that, the grabbing air cylinder is a cylinder with both ends blocked, and one end of the grabbing air cylinder is fixed on the side of the electric spindle through a coupling. On the output shaft, the electric spindle is fixed on the pendulum, and there is an annular groove on the grab cylinder, and several through holes are arranged in the annular groove along the circumference, and a rotary joint is set in the annular groove. There are evenly distributed rectangular long holes in the circumference of the air cylinder, and one-way air nozzles are installed in the long holes. When installing, one is installed in the way of only inhaling air, which is the first one-way air nozzle, and the rest are outward. Installed in a gas way to form a second one-way gas nozzle.

Images