Abstract:
A wooden debris compressor includes a storing tank, and a poking device under the storing tank provided with plural poking rods fixed spaced apart in a definite angle. Then alternate back-and-forth rotation of the poking rods controls the volume of wooden debris falling down, and at the same time ax-shaped knives at outer ends of the poking rods rotates also back and forth alternately to break bridged conditions of wooden debris to let wooden debris smoothly fall down through a feeding hole. Then a cutting device with a cutter is provided on a material room of a feeding device to cut wooden debris in bridged conditions in an upper portion of the material room to let it fall down in a lower portion. Then the compressor can carry out compressing operation continuously and smoothly.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to a wooden debris compressor, particularly to one compressing wooden debris into wooden debris blocks for use. 
   2. Description of the Prior Art 
   Common wooden machines produce lots of wooden debris in their operation, and light and fluffy wooden debris may easily fly around in the air, giving bad effect to the air quality and human health. In disposing it in a bag or container, it needs much space, and moreover, it is also very flammable, having potential danger of get burned to cause disaster to lives and real estates. 
   A conventional wooden debris compressor has been developed, storing wooden debris in a storing tank with a poking device provided therein, for poking wooden debris to fall into a compressing device. Then a pressing rod in the compressing device compresses wooden debris into debris blocks. 
   However, common wooden debris is not in power condition to cause bridged conditions in case it is deposited and accumulated in a vertical condition so wooden debris may not easily fall into the feeding device in the conventional wooden debris compressor just described above. Therefore a poking device is used in the conventional compressor for an attempt of breaking bridging conditions. But the poking device has an elongate poking rod with only a little dimension for poking, incapable to break bridging condition completely and leaving some unbroken portion of the bridging conditions of wooden debris. Therefore, wooden debris cannot smoothly be fed into the feeding device, interrupting the operation of the conventional wooden debris compressor. In addition, during the process of wooden debris falling from the bottom of the storing tank to the feeding rod, bridging conditions may also happen so enough wooden debris may not move into the compressing device, causing interruption of compressing operation. Besides, the compressing device may also operate even in case of no load, resulting in waste of time and troubles in operational process. 
   SUMMARY OF THE INVENTION 
   This invention has been devised to offer a wooden debris compressor, which is provided with a plural poking rods in a poking device under a storing tank, for controlling falling volume of wooden debris by back-and-forth rotation of the poking rods, and also for breaking bridging conditions of wooden debris by ax-shaped knives at the end of the poking rods so as to let wooden debris smoothly fall down through the feeding hole. Further, a cutting device with a cutter is provided on a material room of the feeding device so the bridging conditions of wooden debris formed in the upper portion of the material room can be also broken by the cutter to fall easily down to the bottom. Thus, the wooden debris compressor in the invention breaks in due time bridging conditions possible formed under the storing tank and on the feeding device to continuously and smoothly compress wooden debris, effectively getting rid of the drawbacks of the conventional wooden debris compressor, that is, interruption of compressing operation and idle running of the power under no load. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
     This invention will be better understood by referring to the accompanying drawings, wherein: 
       FIG. 1  is a perspective view of a wooden debris compressor in the present invention; 
       FIG. 2  is a perspective view of the combination of a compressing device, a feeding device, a reciprocating device, a cutting device and a clamping device in the present invention; 
       FIG. 3  is a perspective view of a storing tank and a poking device in the present invention; 
       FIG. 4  is a partial exploded perspective view of the feeding device and the cutting device in the present invention; 
       FIG. 5  is a perspective view of the poking device under a poking movement in the present invention; 
       FIG. 6  is a perspective view of the poking device under another poking movement in the present invention; 
       FIG. 7  is an upper view of the feeding device and the cutting device in the present invention, showing their moving direction in the present invention; and, 
       FIG. 8  is an upper view of the compressing device, the feeding device, the clamping device and a cooling device in the present invention, showing their moving direction. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   A preferred embodiment of a wooden debris compressor in the present invention, as shown in  FIGS. 1 ,  2  and  3 , includes a base  10 , a compressing device  20 , a feeding device  30 , a storing tank  40 , a poking device  50 , a reciprocating device  60 , a cutting device  70 , a cooling device  80 , and a clamping device  90  as main components. 
   The compressing device  20  consists of a base member  21 , a compress room  211  formed on the base member  21 , a liquid cylinder  22  with a compress rod  23  that extends and reciprocates in the compress room  211  for compressing wooden debris into blocks, and a pressure tube  24  fixed at the other end of he liquid tank  22  and communicating with the compress room  211 . The pressure tube  24  has two opposite lengthwise slots  241  to divide it into two half tubes  242  that can expand to some extent in case of pressure caused by wooden debris compressed therein. Further, a debris block outgoing tube  25  is fixed with an outer end of the pressure tube  24 , for finished debris blocks to stay therein temporarily and be gradually pushed out. 
   The feeding device  30  shown in  FIG. 4  is fixed with one side of the compress device  20 , consisting of a base member  31 , a material room  311  formed in the base member  31 , a dropping hole  312  formed on the material room  311 , and a feeding hole  313  formed under one side of the material room  311  and communicating with the compress room  211 , a liquid cylinder  32  fixed on the base member  31  and having a feeding rod  33  that reciprocates under the material room  311  for sealing up the feeding hole  313 . 
   The storing tank  40  is fixed on the feeding device  30 , having a storing hollow  41  to store wooden debris therein, a fall hole  42  formed in the bottom of the storing tank  41  and communicating with the dropping hole  312  of the feeding device  30  for wooden debris to fall from the fall hole  42  into the material room  311 . 
   The poking device  50  is located under the storing tank  41 , consisting of a rotary shaft  51  and three poking rods  52  all connected with and rotated simultaneously by the rotary shaft  51 , an ax-shaped knife  53  respectively formed at the ends of two of the three poking rods  52  and able to move back and forth on the hole  42  during back-and-forth rotation of the poking rods  52 . 
   The reciprocating device  60  is fixed under the poking device  50 , consisting of a pull rod  61  fixed at the outer side of the feeding rod  33  of the feeding device  30  and moving together with the feeding rod  33 , and a first connect rod  62  pivotally connected to the other end of the pull rod  61 , a second connect rod  63  pivotally connected with the other end of the first connect rod  62  and having its other end fixed firmly with the rotary shaft  51  so the rotary shaft  51  may be rotated back and forth, with the poking rods  52  rotated back and for the forth alternately. 
   The cutting device  70  is located on the material room  311  of the feeding device  30 , consisting of a liquid cylinder  71  with a piston rod having its outer end fixed with a cross-shaped cutter  72  so that the cutter  72  may move back and forth in the upper portion of the material room  311 . 
   The cooling device  80  is fixed on the base  10 , consisting of a blower  81 , and a wind pipe  82  connected to the blower  81  for sending cool air sucked into the pressure tube  24  to cool down the pressure tube  24  to prevent it from inflating by heat. 
   The clamping device  90  is fixed on the base  10 , consisting of a stationary clamping block  91 , a movable clamp block  92  and a liquid cylinder  93 . The stationary clamp block  91  is fixed on an outer surface of one of the two half tubes  242  of the pressure tube  24 , and the movable block  92  is connected to and moved back and forth by the piston rod of the liquid cylinder  93 , fixed on the other of the two half tubes  242  so that the pressure tube  24  may be clamped by the two blocks  91  and  92  together to restrict the expansion of the pressure tube  24 . Further, the liquid cylinder  93  can be adjusted in its liquid pressure for adjusting the density of wooden debris blocks to be compressed. 
   In operating the wooden debris compressor, referring to  FIGS. 5 and 6 , at first, wooden debris is poured in the storing tank  41 , the feeding device  30  is started to let the piston rod of the liquid cylinder  32  extending out to actuate the pull rod  61  of the reciprocating device  60 , rotating back and forth the rotary shaft  51  by mutual movement of the first and the second connect rods  62  and  63 . Then the poking rods  52  may be rotated subsequently, to control wooden debris to fall in a preset volume, and meanwhile the two ax-shaped knives  52  at the right and left side of the fall hole  42  moving back and forth on the hole  42  alternately, breaking bridging conditions of wooden debris possibly formed in the storing tank  41  so as to let the broken wooden debris fall down through the fall hole  42 . In case the piston rod of the liquid cylinder  32  is retreated, the ax-shaped knives  53  with the poking rods  52  are at once rotated backward. Then the wooden debris falling down through the fall hole  42  may continue to fall through the dropping hole  312  of the feeding device  30  and further falls to the upper portion of the material room  311  and then to the lower portion thereof. As shown in  FIG. 7 , at this time, the liquid cylinder  32  of the feeding device  30  may move its feeding rod  33  to push the wooden debris in the lower portion of the material room  311  through the feeding hole  313  into the compress room  211  of the compressing device  20 . Then the liquid cylinder  22  of the compressing device  20  may move the compress rod  23  outward to compress wooden debris in the compress room  211  into the pressure tube  24  so the wooden debris may be gradually compressed in the pressure tube  24  to become a debris block (a) of a certain length and in closely packed condition after a certain time of high pressure, and finally pushed into the debris block outgoing tube  25  to stay temporarily therein, as shown in  FIG. 8 . Thus, finished debris blocks (a) are gradually pushed out of the block outgoing tube  25   
   Next, it is necessary to mention that as shown in  FIG. 7 , whenever before the feeding rod retreats to push wooden debris, the liquid cylinder  71  of the cutting device  70  has to be started to let the cutter  72  move to the upper portion of the material room  311  to break wooden debris in the bridged condition therein before falling down to the lower portion of the material room  311 , for ensuring falling action of wooden debris and subsequently smoothing compressing operation without interruption. 
   The invention has the following advantages, as can be understood from the foresaid description. 
   1. Provision of the ax-shape knives fixed at the outer ends of he poking rods  52  and the cutting device  70  on the material room  311  of the feeding device  30  can break bridging conditions of wooden debris in due time, ensure smooth dropping of wooden debris through the fall hole  42  of the storing tank  41  and then in the lower portion of the material room  31 , carrying out compressing operating without interruption or idle operation. 
   2. As the ax-shape knives  53  of the poking rods  52  have the same size as the fall holes  42 , the volume of wooden debris dropping therethrough are almost the same every time so as to let the volume of the wooden debris falling down controllable. 
   3. As the pressure tube  24  is clamped elastically by the clamping device  90 , the pressure tube  24  can be restricted in its expansion by adjusting the liquid pressure in the liquid cylinder  9 , for controlling the density of the finished debris blocks (a), and besides, the liquid pressure can be adjusted according to the condition of wooden debris, such as its powder or particle or thin sheet shape, density, coarseness, etc., for making debris blocks (a) of a preset density. 
   4. The density of debris blocks can be effectively controlled, as the pressure tube  24  can be prevented from inflating caused by heat, as the cooling device  80  is matched with the compressing device  20  for cooling the pressure tube  24 . 
   5. The pull rod  61  of the reciprocating device  60  is moved by the liquid cylinder  32 , so the reciprocating device  60 , the poking device  50  and the feeding device  30  are all operated by the same liquid pressure system, saving the cost of the machine and ensuring accurate operational sequence of those devices. 
   While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.