Abstract:
The invention relates to a paper processing product and, in particular, to a shredder that crinkles paper stripes. The shredder has a shaft set driven by a motor. The shaft set includes at least two shafts rotating in opposite directions. Cutting blade sets are mounted on the shafts. Paper enters the entry of a paper passage formed by the shafts, and gets shredded into chips by the cutting blades. Since the exit of the paper passage is provided with a movable stopper, paper stripes are pushed by the rotating cutting blades to pass the stopper and become crinkled. The stopper is triggered to open by a certain force, letting the paper stripes fall. In addition to the functions of a usual shredder, the paper stripes thus made can be recycled.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of Invention 
     The invention relates to a shredder and, in particular, to a shredder whose paper stripes can be recycled. 
     2. Related Art 
     If waste paper in daily life is not properly processed, it will bring troubles to our tasks or even result in serious outcomes to the management. A traditional way is to burn the paper. This does not require a place for the furnace, but also cause serious air pollution. To avoid this, various kinds of shredders have been invented. 
     The shredder usually consists of a paper stripe bin and a shredding head. The shredder has a high-speed motor connected with a rigid gearbox, thereby transmitting the torque to two blade sets. The cutting blades on the blade set thus shred paper into chips. The cutting blades of the blade sets are disposed along two shafts. Once paper is cut by the cutting blades, the chips fall down through the exit of the shredder. That is, the paper stripes fall directly between the two shafts. 
     Although shredders bring us a lot of convenience, it is a waste to throw away the paper stripes they produce. It is therefore the objective of the invention to make further use of the paper stripes. 
     SUMMARY OF THE INVENTION 
     An objective of the invention is to provide a shredder that can recycle the shredded paper stripes thereof. 
     To achieve the above-mentioned objective, a first embodiment is the following. The shredder has a shaft set driven by a motor. The shaft set includes at least two shafts rotating in opposite directions. The shafts are mounted with blade sets. Paper enters via the entry of the paper passage formed between the shafts, and gets cut into chips by the blade sets. A movable or fixed stopper is provided at the exit of the paper passage. The paper stripes are pushed down by the rotating blade sets toward the exit. The stopper forms crinkles on the paper stripes by blocking them. The stopper is triggered to open under a certain force from the accumulated paper stripes, letting the crinkled paper stripes fall down. When the shredder is in the reverse mode, the clearing mechanism can be triggered by the sliding switch hat or the reversing power of the shredder. The stopper opens the paper exit under the action of the spring or the reversing mechanism of the shredder. In this case, paper is smoothly backed out without the pressure of the stopper. After the reversal is over, the sliding switch hat is put at any position other than reverse. The stopper is driven by a restoring mechanism to automatically restore its position via a mechanical restoring button or the forwarding power of the shredder. 
     In the first embodiment, the blade set includes: blades mounted on the corresponding shaft and spacers between each two adjacent blades. The paper passage is a passage formed by two opposite side surfaces of left and right guiding boards. 
     There are two types of spacers on the shafts: one having the same width as the width of paper stripes, and the other having a smaller width than the width of paper striped. These two types of spacers and the cutting blades are mounted alternately. The circumference of the cutting blade is formed with local bumps to increase the friction between the blades and the paper. The paper thus falls smoothly during the cutting process. Moreover, the cutting blades can be made smaller to reduce the production cost. 
     In the first embodiment, the left and right guiding boards are between the two shafts and each of them is integrally formed. There are grooves on the two opposite side surfaces for cutting blades to extend out. The guiding boards corresponding to the thin spacers can prevent paper jams in the cutting blades. The side surfaces at the paper exit of the left and right guiding boards can be made to have planar, wavy, or horn shape. Alternatively, each of the left and right guiding boards consists of several guiding units. The guiding units are mounted on the spacers of the shafts. 
     There are three schemes for the clearing mechanism. The first scheme is manual. The components include a sliding switch hat, a pulling bar, a transmission shaft, a lock, a stopper, a restoring switch, a pulling spring, and a torsional spring. The motion of the clearing mechanism can be rotational or translational. The power of the clearing mechanism can be a spring with an elastic potential. The restoring switch is a knob or button. The second scheme is semi-automatic. The components include a sliding switch hat, a pulling bar, a transmission shaft, a lock, a connecting bar, a cam, a pulling spring, and a restoring spring. The stopper is manually opened. Otherwise, the shafts drive the cam and the pulling bar to automatically close the stopper. The third scheme is fully automatic. The reversal of the shafts opens the stopper, and the forward rotation thereof closes the stopper. In one embodiment, the components include a pulling claw, a pulling bar, a spiral guiding groove, and a guiding chip. In a second embodiment, the components include a pulling claw, a pulling bar, and a one-way bearing. In a third embodiment, the components includes a forward claw, a reverse claw, a pawl, a pulling bar, and a restoring spring. 
     In the first embodiment, the clearing mechanism includes a sliding switch hat, a pulling bar, a transmission shaft, a lock, a stopper, a restoring switch, a pulling spring, and a torsional spring. The clearing mechanism performs a rotational or translational motion. The clearing mechanism is powered by a spring with an elastic potential or a power source through a gearbox. The restoring switch is a knob or button. 
     In a second embodiment of the invention, the shredder has a shaft set driven by a motor. The shaft set has at least two shafts rotating in opposite directions and with cutting blade sets mounted thereon. Paper enters the entry of a paper passage and is cut by the cutting blades into paper stripes. Paper feeding devices are provided under the exit of the paper passage. The paper feeding devices include two rollers operating in opposite directions and an elastic stopper at the exit of the two rollers. The paper stripes enter the entry of the two rollers of the paper feeding device and move toward the exit under the push of the rollers. The paper stripes are crinkled by the elastic stopper. The accumulated paper stripes push the elastic stopper open. 
     In the second embodiment, two paper feeding devices are disposed under the exit of the paper passage in a symmetrical way. The paper stripes out of the exit of the paper passage are guided by the guiding surfaces of left and right guiding boards into the two paper feeding devices. 
     In a third embodiment of the invention, the shredder has a shaft set driven by a motor. The shaft set has at least two shafts rotating in opposite directions and with cutting blade sets mounted thereon. Paper enters the entry of the paper passage between the shafts, and is cut by the cutting blades into paper stripes. The paper passage is formed by two opposite side surfaces of left and right guiding boards mounted on the shafts. A stopper is formed on each of the left and right guiding boards to block the exit of the paper passage. The paper stripes are pushed down by the rotating blades toward the exit. The stoppers form crinkles on the paper stripes. The stoppers open under the accumulated weight of the paper stripes or the trigger of a driving mechanism. 
     In the third embodiment, the blade set includes: blades mounted on the corresponding shaft and spacers between each two adjacent blades. The left and right guiding boards are mounted on the spacers. 
     In the third embodiment, the left and right guiding boards are formed with protrusions to urge against the elastic element. The paper stripes are pushed down by the blade sets toward the exit and crinkled by the two stoppers. The accumulated weight thereof overcomes the stopping force of the elastic element on the protrusions, thereby pushing the stoppers open. 
     In the third embodiment, the left and right guiding boards are formed with bumps connected with a driving mechanism. The driving mechanism drives the left and right guiding boards to swing through the connections with the bumps, thereby opening or closing the stoppers. 
     In addition, the invention proposes rolling paper designed for the above-mentioned shredder. The rolling paper is formed with alternating cuts. The rolling paper can be continuous listing paper. 
     According to the invention, the motor drives a long shaft and a short shaft through decelerating gears. Cutting blades on the shafts cut paper into chips. The paper stripes move downward through the paper passage between the shafts. An elastic chip or stopper is disposed at the paper exit. The paper stripes are crinkled by the blocking of the elastic chip or stopper. They can also be crinkled between the guiding boards and blades. Such crinkled paper stripes become resilient. The invention can be made small for mass production. Moreover, the crinkled paper stripes thus obtained are resilient and suitable for packaging and transportation. Therefore, the invention recycles waste paper and thus protects our environment. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features, aspects and advantages of the invention will become apparent by reference to the following description and accompanying drawings which are given by way of illustration only, and thus are not limitative of the invention, and wherein: 
         FIG. 1  is a top view showing the structure of the first embodiment of the invention; 
         FIG. 2  is a side view of the first embodiment; 
         FIG. 3  shows the structure of the first embodiment; 
         FIG. 4  is a three-dimensional view of the shaft set in the first embodiment; 
         FIGS. 4   a  to  4   d  are schematic views of the first embodiment with different kinds of cutting blades; 
         FIG. 5  is a schematic view showing that the stopper is closed in the first embodiment; 
         FIG. 6  is a schematic view showing that the stopper is open in the first embodiment; 
         FIG. 7  is a schematic view showing how the first embodiment works; 
         FIG. 8  is another schematic view showing how the first embodiment works; 
         FIG. 9  is a top view of a second embodiment of the invention; 
         FIG. 10  is a side view of the second embodiment; 
         FIG. 11  is a three-dimensional view of the shaft set in the second embodiment; 
         FIG. 12  shows the structure of the second embodiment; 
         FIGS. 13 and 14  shows how the third embodiment of the invention works; 
         FIGS. 15 and 16  shows how the fourth embodiment of the invention works; 
         FIG. 17  is a three-dimensional view of the shredder; 
         FIG. 18  is a three-dimensional view of the shredder being opened; 
         FIG. 19  schematically shows the internal structure of the shredder; 
         FIG. 20  is a schematic view of paper used by the shredder; 
         FIG. 21  schematically shows the paper stripes after cutting; 
         FIG. 22  shows the crinkled paper stripes produced by the disclosed shredder; 
         FIG. 23  schematically shows that the elastic chip in the manual clearing mechanism is closed; 
         FIG. 24  is a three-dimensional view showing that the elastic chip in the manual clearing mechanism is closed; 
         FIG. 25  schematically shows that the elastic chip in the manual clearing mechanism is opened; 
         FIG. 26  is a three-dimensional view showing that the elastic chip in the manual clearing mechanism is opened; 
         FIG. 27  schematically shows that the elastic chip in the automatic clearing mechanism is closed according to the first embodiment; 
         FIG. 28  schematically shows that the elastic chip in the automatic clearing mechanism is opened according to the first embodiment; 
         FIG. 29  is a three-dimensional view of the automatic clearing mechanism according to the first embodiment; 
         FIG. 30  schematically shows that the elastic chip in the automatic clearing mechanism is closed according to the second embodiment; 
         FIG. 31  schematically shows that the elastic chip in the automatic clearing mechanism is opened according to the second embodiment; 
         FIG. 32  is a three-dimensional view of the automatic clearing mechanism according to the second embodiment; 
         FIG. 33  schematically shows that the elastic chip in the semi-automatic clearing mechanism is closed; 
         FIG. 34  schematically shows that the elastic chip in the semi-automatic clearing mechanism is opened; 
         FIG. 35  is a three-dimensional view of the semi-automatic clearing mechanism. 
         FIG. 36  is a schematic view of a closed stopper according to the third embodiment of the fully automatic shredder; 
         FIG. 37  is a schematic view of an open stopper according to the third embodiment of the fully automatic shredder; and 
         FIG. 38  is a three-dimensional view of the fully automatic shredder. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements. 
     Please refer to  FIGS. 1 ,  2 ,  3 ,  4 ,  23 ,  25 ,  27 ,  28 ,  30 ,  31 ,  33 ,  34 ,  36  and  37  for a first embodiment of the invention. It includes: a motor  1 , a gear decelerating mechanism  10  connected to the motor  1 , a shaft set  3 , cutting blades fixed on the shaft set  3 , and a clearing mechanism. 
     The shaft set  3  in this embodiment includes one long shaft  31 , and one short shaft  32 . The shafts  31 ,  32  rotate synchronously via gears. The motor  1  drives the long shaft  31  through the gear decelerating mechanism  10 . Thus, the two shafts rotate concurrently in opposite directions. 
     The shafts  31 ,  32  are mounted with blade sets. Each of the blade sets includes: cutting blades  21  mounted on the shaft  31  or  32  and spacers  22   a , 22   b  between each two adjacent cutting blades  21 . The width of the spacer  22   a  is the same as that of the paper striped. The width of the spacer  22   b  is smaller than that of the paper stripes. The cutting blades  21  on the two shafts are arranged to provide a cutting effect, cutting paper  9  between the two shafts  31 ,  32  into paper stripes  91 . The cutting blade  21  can be designed to have different shapes, as shown in  FIGS. 4   a  to  4   d . The circumference of the cutting blade is formed with local bumps to increase the friction between the blades and the paper. The paper thus falls smoothly during the cutting process. Moreover, the cutting blades can be made smaller to reduce the production cost. 
     A paper passage  4  is formed between the two shafts  31 ,  32 . In this embodiment, the paper passage  4  is a passage formed by two opposite side surfaces of left and right guiding boards  61 ,  62 . The paper  9  enters via the entry above the paper passage  4 . The paper stripes  91  come out of the exit  42  at the lower end of the paper passage  4 . An openable stopper  5  is disposed at the exit  42  to block the exit  42 . 
     With reference to  FIGS. 3 and 22 , paper  9  enters the entry  41  of the paper passage  4  formed by the shafts  31 ,  32 , and is cut by the blade sets into paper stripes  91 . A stopper  5  is disposed at the exit  42  of the paper passage  4 . The paper stripes  91  are pushed by the rotating blade sets toward the exit  42 , and experience resistance. The paper stripes  91  are crinkled in this space. Once the paper stripes  91  are accumulated to a certain extent, its pressure pushes the stopper  5  open. The crinkled paper stripes  92  thus fall out of the exit  42 . 
     The left and right guiding boards  61 ,  62  are located between the two shafts  31 ,  32 . Each of the left and right guiding boards  61 ,  62  is integrally formed. The two opposite side surfaces are formed with grooves for the cutting blades  21  to extend out, as shown in  FIG. 4 . The guiding boards  61   a ,  62   a  can prevent paper jams at the cutting blades. 
     The stopper  5  is an elastic object. Under its own elasticity, the stopper  5  blocks the exit  42  of the paper passage  4 . It is pushed open under the gravity of the paper stripes  91  accumulated in the paper passage  4 . The elasticity of the stopper  5  can be due it its material, as shown in  FIGS. 3 and 4 . It can also be implemented by adding a torsional spring  50 . As shown in  FIGS. 5 ,  6 ,  7 , the rotating axis of the stopper  5  is disposed with a torsional spring  50  to implement the elasticity on the stopper  5 . The stopper  5  can rotate a certain angle so that the exit  42  of the paper passage  4  is completely open or closed. 
     Besides, the stopper  5  can be installed with a moving device. The moving device enables the stopper  5  to rotate to translate, thereby completely opening the exit  42 . In this case, the paper stripes  91  in the paper passage  4  experience no resistance, implementing the function of clearing paper. After paper stripes are cleared, the stopper  5  is restored by the moving device. 
     The stopper  5  can have various kinds of shapes. It is usually a flat board. Of course, it can also have a comb shape. 
     With reference to  FIG. 8 , the left and right guiding boards  61 ,  62  can consist of several guiding units  60  as well. The guiding units  60  are mounted on the spacers  22  of the shafts  31 ,  32 . The guiding units  60  on each of the shafts form the paper passage  4 . 
     Please refer to  FIGS. 23 ,  24 ,  25 , and  26 . The clearing mechanism consists of a sliding switch hat  101 , a pulling bar  102 , a transmission shaft  105 , a lock  107 , a stopper  5 , a restoring switch  103 , a pulling spring  104 , and a torsional spring  106 . When the shredder runs in the reverse mode, the sliding switch hat  101  pushes the pulling bar  102  to rotate. This action drives the lock  107  to rotate via the transmission shaft  105 . Under the pulling force of the spring, the stopper  5  moves backward to open the paper exit. The restoring switch  103  pops outward. After paper stripes are cleared, the sliding switch is moved to any position other than reverse. By pushing the restoring switch  103 , the stopper  5  moves forward and locks. The action of the torsional spring  106  implements the locking by rotating the stopper downward. 
     Please refer to  FIGS. 27 ,  28 , and  29 . The clearing mechanism includes a pulling claw  112 , a pulling bar  113 , a pulling bar  114 , a stopper  5 , a spiral guiding groove  111 , a guiding plate  110 , and a pulling spring  115 . When the shredder reverses, the spiral guiding groove  111  is driven by the guiding plate  110  to displace the pulling claw  112  outward. When the pulling claw  112  and the pulling bar  113   a  are on the same plane, the pulling claw  112  pushes the pulling bar  113  to rotate clockwise, bringing the pulling bar  114  and the stopper  5  to rotate counterclockwise at the same time. Thus the stopper  5  opens the paper exit. When the shredder runs forward, the spiral guiding groove  111  under the action of the guiding plate  110  displaces the pulling claw  112  inward. When the pulling claw  112  and the pulling bar  113   b  are on the same plane, the pulling claw  112  pushes the pulling bar  113  to rotate counterclockwise, bringing the pulling bar  114  and the stopper  5  to rotate clockwise. The stopper  5  is then in the state to crinkle paper. 
     Please refer to  FIGS. 30 ,  31 , and  32 . The clearing mechanism includes a forward pulling claw  116 , a reverse pulling claw  117 , a pulling bar  113 , a pulling bar  114 , and a stopper  5 . The forward pulling claw  116  has one-way mechanisms  118 ,  119 ,  120 . The reverse pulling claw  117  has one-way mechanisms  118 ,  119 ,  120 . The forward pulling claw  116  and the pulling bar  113   b  are on the same plane. The reverse pulling claw  117  and the pulling bar  113   a  are on the same plane. When the shredder reverses, the reverse pulling claw  117  drives the pulling bar  113   a , the pulling bar  114 , and the stopper  5  to rotate, thereby opening the paper exit. When the shredder runs forward, the pulling claw  116  drives the pulling bar  113   b , the pulling bar  114 , and the stopper  5  to rotate. The stopper is then in the state to crinkle paper. 
     Please refer to  FIGS. 33 ,  34 , and  35 . The clearing mechanism includes a sliding switch hat  101 , a pulling bar  102 , a pulling bar  130 , a pulling bar  131 , a cam  132 , a lock  107 , pulling springs  104 ,  106 , and a restoring spring  133 . When the sliding switch hat  101  is put at the reverse mode, the sliding switch hat  101  triggers the pulling bar  102  to rotate. The lock  107  is then unlocked. The stopper  5  is pulled by the pulling spring  104  to rotate and open the paper exit. At the same time, the sliding switch hat  101  pushes the pulling bar  130  to displace the cam  132  outward. Once the reversal is over and the switch is put at the AUTO mode, the shredder runs forward. The cam  132  is driven by the restoring spring  133  to restore its position and push the pulling bar  131 . The stopper  5  thus rotates to close the paper exit, resuming its state of crinkling paper. 
     Please refer to  FIGS. 36 ,  37 , and  38 . The clearing mechanism includes a forward claw  142 , a reverse claw  143 , a pulling rod  114 , and another pulling rod  140 . The pulling rod  140  has one-way pawls  140   a ,  140   b . The forward claw  142  and the one-way pawl  140   b  are on the same plane. These two elements have slant surfaces facing each other. The reverse claw  143  and the one-way pawl  140   a  are on the same plane. These two elements have slant surfaces facing each other. When the shredder runs forward, the forward claw  142  drives the one-way pawl  140   b , the pulling rod  140 , the pulling rod  114 , and the stopper  5  into rotations, closing the stopper  5 . In this case, due to the slant surfaces, the reverse claw  143  makes the pawl  140   a  rotate outward, realizing the one-way feature of the reverse claw  143  and the pawl  140   a . When the shredder runs in reverse, the reverse claw  143  rotates the one-way pawl  140   a , the pulling rod  140 , the pulling rod  114 , and the stopper  5 , opening the stopper  5 . Due to the slant surfaces, the forward claw  142  makes the pawl  140   b  rotate outward, realizing the one-way feature of the forward claw  142  and the pawl  140   b.    
     Please refer to  FIGS. 9 to 12  for a second embodiment of the invention. Similar to the first embodiment, the present embodiment includes: a motor  1 , a gear decelerating mechanism  10  connected to the motor  1 , a shaft set  3 , and blade sets fixed on the shaft set  3 . The blade sets are mounted on the two shafts  31 ,  32 . Each of the blade sets includes: cutting blades  21  mounted on the shaft  31  or  32  and spacers  22  between two adjacent cutting blades  21 . A paper passage  4  is formed between the two shafts  31 ,  32 . 
     A difference is that in the first embodiment, the crinkling process occurs in the paper passage  4 . In this embodiment, the crinkling process is accomplished by paper feeding devices  7 . The structure is described as follows. 
     Two paper feeding devices  7  are disposed under the exit  42  of the paper passage  4 . The paper feeding devices  7  include a pair of opposite rollers  71  and an elastic stopper  51  at the exit of the two rollers  71 . The paper stripes  91  enter the entry of the two rollers  71  of the two paper feeding devices  7 . They are pushed by the rollers  71  toward the exit. Through the blocking of the elastic stopper  51 , the paper stripes  91  are crinkled. An accumulated pushing force eventually pushes the elastic stopper  51  open. 
     The paper passage  4  is a passage formed by the two opposite side surfaces of the left and right guiding boards  611 ,  621  mounted on the shafts  31 ,  32 . The side surface of the paper passage  4  formed by the left guiding board  611  has a guiding curved surface toward the left paper feeding device  7 . The side surface of the paper passage  4  formed by the right guiding board  621  has a guiding curved surface toward the right paper feeding device  7 . The reason for this structure, as shown in  FIG. 10 , is that the two paper feeding devices  7  form a V shape under the exit  42 . In order for the paper stripes  91  to enter the paper feeding devices  7 , respectively, the two opposite side surfaces of the left and right guiding boards  611 ,  621  are made into smooth guiding curved surfaces. Once paper stripes  91  are formed, they are driven by the cutting blades  21  and their own tension to proceed along two directions. They then follow the corresponding guiding curved surfaces to enter the two paper feeding devices  7 . 
     According to the embodiment, the paper stripes  91  formed by the cutting blades  21  are divided into two parts via the left and right guiding boards  611 ,  612  to enter the corresponding underneath paper feeding devices  7 . Since the paper feeding devices  7  have a pair of oppositely running rollers  71 , the paper stripes  91  are driven by the rollers  71  downward. When the paper stripes  91  reach the elastic stopper  51 , they are crinkled between the elastic stopper  51  and the rollers  71  due to resistance. The paper stripes become resilient crinkle paper  92 . The accumulated resilient force eventually pushes the elastic stopper  51  open, and the resilient crinkle paper  92  drops out. 
     As in the first embodiment, the elastic stopper  51  in the second embodiment can open through a rotational or translation motion. The paper stripes  91  can directly escape without any resistance, thereby clearing the paper. After the paper is cleared, the elastic stopper  51  restores its position by rotation or translation. Besides, the material of the rollers  71  can be metal, plastic, or rubber. There can also be several sets of rollers  71 . 
     Please refer to  FIGS. 13 and 14 . The primary structure of this embodiment is the same as the previous two embodiments and is not further described. The only difference is the following. The paper passage  4  is formed by the two opposite side surfaces of the left and right guiding boards  612 ,  622  mounted on the shafts  31 ,  32 . Stops  613 ,  623  are formed on the left and right guiding boards  612 ,  622  to block the exit  42  of the paper passage  4 . The paper stripes  91  are pushed by the blade sets toward the exit  42 , and crinkled due to the blocking of the two stoppers  613 ,  623 . A force is accumulated to eventually open the stoppers  613 ,  623 . 
     The blade set in this embodiment includes cutting blades  21  mounted on the shafts  31 ,  32  and the spacers  22  between two adjacent cutting blades  21 . The left and right guiding boards  612 ,  622  are mounted on the spacers  22  in a rotatable way. The left and right guiding boards  612 ,  622  are formed with protrusions  614 ,  624 , respectively. The protrusions  614 ,  624  urge against the elastic element  52 . The paper stripes  91  are pushed by the blade sets toward the exit  42 . They form crinkles by the blocking of the two stoppers  613 ,  623 . A force is accumulated to eventually overcome the blocking force of the elastic element  52  on the protrusions  614 ,  624  and push the stoppers  613 ,  623  open. The resilient crinkled paper  92  thus falls between the two stoppers  613 ,  623 . 
     Please refer to  FIGS. 17 to 19  that show the structure of the disclosed shredder. In contrast of putting paper sheet by sheet to make resilient crinkle paper, the invention allows continuous production of resilient crinkle paper. 
     The upper part of the housing  8  of the invention has a flipping lid  81 . Specific rolling paper  90  is disposed inside the flipping cover  81 . A cutting knife  82  is installed on the flipping lid. By pulling a handle  83 , the cutting knife  82  starts high-speed rotations to cut the rolling paper  90 . To automatically produce resilient crinkle paper, one only needs to open the flipping lid  81  and insert the rolling paper  90 . Then one puts the beginning of the rolling paper into the paper passage  4 . By turning on the switch  84 , the invention starts its function to continuously generate crinkle paper. The power source of the rolling paper  90  can be the paper itself or from some gears and belts. 
     As shown in  FIG. 20 , this particular rolling paper  90  has cuts  900  by its vendor or some cutting machine. The cuts  900  alternate so that the resilient crinkle paper is in segments. Note that the cuts  900  can be arbitrarily arranged. 
     As shown in  FIG. 21 , a traditional shredder can cut a sheet of large-area paper into paper stripes  91 . However, the invention can turn the paper stripes into resilient crinkle paper, as shown in  FIG. 22 . This kind of crinkle paper  92  is formed by repeatedly folding the paper stripes  91 , attributing them the resilient nature like a spring. They can provide good buffer for packaging. Moreover, the resilient crinkle paper  92  can be used as fertilizers. Because of its resilience and empty space formed in between, the resilient crinkle paper  92  can provide sufficient air for fertilizer fermentation. 
     Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.