Patent Publication Number: US-9410740-B2

Title: Baking transmission mechanism

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a baking transmission mechanism 
     2. Description of Related Art 
     When housings of mobile phones and electronic devices are painted by a spraying apparatus, they are baked by a baking transmission apparatus. Transfer apparatuses are used for transferring a large number of workpieces at a fixed speed for spraying and baking. However, it is not suitable for transferring a small batch of workpieces. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the disclosure can be better understood with reference to the following figures. The components in the figures are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
         FIG. 1  is a schematic view of a baking transmission mechanism. 
         FIG. 2  is a schematic view of a dustproof assembly of the baking transmission mechanism shown in  FIG. 1 . 
         FIG. 3  is a schematic view of a first transportation assembly of the baking transmission mechanism shown in  FIG. 1 . 
         FIG. 4  is a schematic view of a second transportation assembly of the baking transmission mechanism shown in  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIG. 1  and  FIG. 4 , a baking transmission mechanism is used for transmitting small products for baking. The baking transmission mechanism includes a dustproof assembly  10 , a main conveyor belt (not labeled), a first transportation assembly  20 , and a second transportation assembly  30 . The main conveyor belt includes a first conveyor belt portion  15 , a second conveyor belt portion  25 , and a third conveyor belt portion  35 . The first conveyor belt portion  15  is a portion of the main conveyor belt located in the dustproof assembly  10 . The second conveyor belt portion  25  is a portion of the main conveyor belt located in the first transportation assembly  20 . The third conveyor belt portion  35  is a portion of the main conveyor belt located in the second transportation assembly  30 . The first transportation assembly  20  is mounted between the dustproof assembly  10  and the second transportation assembly  30 , and the second conveyor belt portion  25  is connected to the first conveyor belt portion  15  and the third conveyor belt portion  35 . 
     The dustproof assembly  10  includes a box  11 , a support table  12 , two main transport wheels  13 , and a driving module  14 . The box  11  includes a bottom plate  111 , a separator  112 , and two side plates  113 . The bottom plate  111  and the separator  112  are spaced apart and are connected between the two side plates  113 . Each of the side plates  113  defines two holes  114 . The support table  12  is mounted on one of the side plates  113 . One end of the support table  12  has a limit portion  115  for preventing the first conveyor belt portion  15  from deflection. The two main transport wheels  13  are respectively fixed adjacent to opposite ends of the supporting table  12 . The first conveyor belt portion  15  passes through the limit portion  115  and wraps around the two main transport wheels  13 . The two main transport wheels  13  rotate along a same direction to drive the first conveyor belt portion  15  to move. Two ends of the first conveyor belt portion  15  pass through the holes  114 , respectively, and are respectively connected to one end of the second conveyor belt portion  25  and one end of the third transport belt portion  35  (Referring to  FIG. 4 ). The driving module  14  includes a drive motor  141  and a main drive wheel  142 . The drive motor  141  is mounted on the bottom plate  111  of the box  11 . The main drive wheel  142  is mounted on the drive motor  141  and is driven by the drive motor  141 . The main drive wheel  142  has a main drive belt  143  protruding out of the box  11  from one of the side plates  113 . 
     Referring to  FIG. 2 , the first transportation assembly  20  includes a first box  21 , a first pulley assembly  22 , a second pulley assembly  23 , a first feed wheel  24 , a first discharge wheel  28 , a first oven assembly  26  and a connection wheel  27 . The first box  21  includes a first bottom wall  211 , a first top wall  212  opposite to the first bottom wall  211 , and two first side walls  213 . The two first side walls  213  are connected between the first bottom wall  211  and the first top wall  212 . The first pulley assembly  22  is mounted to one of the first side walls  213 , and includes an upper pulley  221  and a lower pulley  222  coaxially arranged with the upper pulley  221 . The lower pulley  222  connects to the main drive belt  143  extending out of the box  11 . The second pulley assembly  23  is mounted to the other first side wall  213 . The second pulley assembly  23  has a same structure as the first pulley assembly  22 , and includes an upper drive pulley  231  and a lower drive pulley  232 . 
     The first oven assembly  26  is mounted to the first bottom wall  211  between the first pulley assembly  22  and the second pulley assembly  23 . The first oven assembly  26  includes a first oven  260 , a first main driving shaft  261 , three first driven shafts  262 , and a first transmission belt  29 . The first oven  260 , the main driving shaft  261  and the first driven shafts  262  are located between the first bottom wall  211  and the first top wall  212 . The workpiece enters into the first oven assembly  26  from first feed opening  216  and is disposed on first transport belt portion  25 . Therefore, the workpiece can be baked in the first oven  260 . The first main driving shaft  261  includes a first rotation wheel  263  and a first driving wheel  264 . The first transmission belt  29  is wrapped around the first rotation wheel  263  and the upper pulley  221 . 
     The first main driving shaft  261  has a plurality of rotating wheels  265 . The first driven shafts  262  is provided with a plurality of rotating wheels  266 . The first main driving shaft  261  and one of the first driven shafts  262  are located opposite to each other to form a first discharge and transmission mechanism. Additionally, the other two first driven shafts  262  are located opposite to each other to form a first feeding and transmission mechanism. The rotating wheels  265  of the first main driving shaft  261  and the rotating wheels  266  of the first driven shafts  262  are staggered to each other. The first feed wheel  24  and the first discharge wheel  28  are mounted on the first top wall  212  and are spaced from each other. A baffle  215  is positioned at one side of the first top wall  212 . The baffle  215  defines a first feed opening  216  and a first discharge opening  217 . The first feed opening  216  and the first discharge opening  217  are located between the first feed wheel  24  and the first discharge wheel  28 . The first top wall  212  has a divert wheel  282 . The divert wheel  282  is located opposite to the first discharge opening  217 . Two positioning frames  241  are located adjacent to the first feed wheel  24  for guiding the second conveyor belt portion  25 . Two positioning frames  281  are located adjacent to the first discharge wheel  28 . 
     One end of the second conveyor belt portion  25  extending out of one of the side walls  213  is connected to one end of the first conveyor belt portion  15 . The other end of the second conveyor belt portion  25  passes through the positioning frames  241  to wind around the first feed wheel  24 . The divert wheel  282  drives the second conveyor belt portion  25  to pass through the first feed opening  216 . Thus, the second conveyor belt portion  25  winds around the rotating wheels  266  of two first driven shafts  262 . After the second conveyor belt portion  25  winds around the rotating wheels  266  of the first feeding and transmission mechanism, the second conveyor belt portion  25  winds around the rotating wheels  265  of the first discharge and transmission mechanism in the same manner and then passes through the first discharge opening  217 . The second conveyor belt portion winds around the divert wheel  282 . The second conveyor belt portion  25  then passes through the positioning frames  281  to wind around the first discharge wheel  28  and the connection wheel  27 , and then extends out of the other sidewall  213  into the second transportation assembly  30 . The first driving wheel  264  of the first main driving shaft  261  is connected to the lower drive pulley  232  via a first transmission convection belt  267  coiling around the first driving wheel  264  and the lower drive pulley  232 . A second transmission belt  233  is wrapped around the upper drive pulley  231  of the second pulley assembly  23 . 
     Referring to  FIG. 3 , the second transportation assembly  30  has substantially a same structure as the first transportation assembly  20 . The second transportation assembly  30  includes a second housing  31 , a third pulley assembly  32 , a fourth pulley assembly  33 , a second feed wheel  34 , a second oven assembly  36 , a coupling wheel  37 , and a second discharge wheel  38 . The second housing  31  includes a second bottom wall  311 , a second top wall  312  opposite to the second bottom wall  311 , and two second side walls  313 . The third pulley assembly  32  is mounted on the second bottom wall  311  adjacent to one of the second side walls  313 , and includes an upper pulley  321  and a lower pulley  322  coaxially connected to the upper pulley  321 . The lower pulley  322  is connected to one end of the second transmission belt  233  of the second pulley assembly  23 . The fourth pulley assembly  33  is mounted on the second bottom wall  311  adjacent to the other side wall  313 . The fourth pulley assembly  33  has substantially a same structure as the third pulley assembly  32 , and includes an upper drive pulley  331  and a lower drive pulley  332 . 
     The second oven assembly  36  is mounted on the second bottom wall  311  between the third pulley assembly  32  and the fourth pulley assembly  33 , and includes a second oven  360 , a second main driving shaft  361 , three second driven shafts  362 , and a third transmission belt  39 . The second oven  360 , the second main driving shaft  361  and the three second driven shafts  362  are located between the second bottom wall  311  and a second top wall  312 . The workpiece enters into the second oven assembly  36  from second feed opening  316  and is disposed on third transport belt portion  35  Therefore, the workpiece can be baked in the second oven  360 . One end of the second main driving shaft  361  has a second rotation wheel  363  and a second drive wheel  364 . The second rotation wheel  363  and the second drive wheel  364  are located adjacent to the second bottom wall  311 . The second drive wheel  364  and the fourth pulley assembly  33  are provided with a movable belt  334 . The third transmission belt  39  is wrapped around the second rotation wheel  363  and the upper pulley  321 . The second main driving shaft  361  has a plurality of wheels  365 , and the second driving shafts  362  have a plurality of wheels  366 . The second main driving shaft  361  and one of the second driven shafts  362  are located opposite to each other to form a second discharge and transmission mechanism. The other two second driven shafts  362  are located opposite to each other to form a second feed and transmission mechanism. The second feed wheel  34  and the second discharge wheel  38  are mounted on the second top wall  312  and are spaced from each other. The second top wall  312  includes a baffle  315 . The baffle  315  defines a second feed opening  316  and a second discharge opening  317 . The second feed opening  316  and the second discharge opening  317  are defined between the second feed wheel  34  and the second discharge wheel  38 . The top wall  312  has a divert wheel  382 . The divert wheel  382  is located opposite to the second discharge opening  317 . Two positioning frames  341  are mounted on the top wall  312  adjacent to the second feed wheel  34 , and two positioning frames  381  are mounted adjacent to the second discharge wheel  38 . A bracket  40  is mounted outside a sidewall  313  of the second oven assembly  36 . Two discharge wheels  41  are mounted on the bracket  40 . 
     A first end of the third transport belt portion  35  extending out of one of the side walls  313  is connected to one end of the second conveyor belt portion  25 . A second end of the third transport belt portion  35  passes through the positioning frames  341  and the second feed wheel  34 , and is driven by the divert wheel  382  to pass through the second feed opening  316 . The third transport belt portion  35  wraps around the wheels  366  of two second driven shafts  362  of the second feed and transmission mechanism. The third conveyor belt portion  35  then wraps around the wheels  365  of the second discharge and transmission mechanism in the same manner and then passes through the second discharge opening  317 . The third conveyor belt portion  35  then passes through the positioning frames  381  and wraps around the second discharge wheel  38  and the connection wheel  37 , and lastly passes out of the other sidewall  313 . The third conveyor belt portion  35  wraps around the two discharge wheels  41  to connect with one end of the first conveyor belt portion  15 , so that the second conveyor belt portion  25  is connected with the first conveyor belt portion  15  and the third transport belt portion  35  to form the main conveyor belt. The transmission belt  334  is wrapped around the first drive wheel  364  and the lower drive pulley  332 . 
     In use, a workpiece (not shown) is mounted on the first transport belt portion  15  of the main conveyor belt, and the baking transmission mechanism is started. The main drive wheel  142  is driven by the drive motor  141  to rotate to move the main drive belt  143  to move. The main drive belt  143  rotates the lower pulley  222  of the first pulley assembly  22 , and the lower pulley  222  rotates the upper pulley  221  to move the first belt  29 . The first belt  29  rotates the first rotation wheel  263 , causing the first main driving shaft  261  and the first driven shafts  262  to rotate simultaneously. 
     The main conveyor belt carries the workpiece from the first feed opening  216  into the first feed and transmission mechanism. That is, the main conveyor belt is transmitted two driven shafts  262 . Then, the main conveyor belt is transmitted by the first discharge and transmission mechanism. That is, the main conveyor belt is transmitted by the first driving shaft  261  and then by the other one driven shaft  262 . When the main conveyor belt carries workpiece passed the first feed and transmission mechanism and the first discharge and transmission mechanism, the workpiece located above the first oven  260  can be baked by the first oven  260 . Then, the first discharge and transmission mechanism carries the workpiece out of the first oven assembly  26  from the first discharge opening  217  after the workpiece is baked in the first oven assembly  26 . Then, the workpiece enters the second transportation assembly  30  driven by the first discharge wheel  28  and the divert wheel  282 . Meanwhile, the second pulley assembly  23  drives the second transmission belt  233  to pull the lower pulley  322  of the third pulley assembly  32  to rotate. The second driving wheel  363  is pulled to drive the second main driving shaft  361  and the second driven shafts  362  to rotate. The workpiece is carried into the second oven assembly  36  by the third conveyer belt portion  35 , and is carried out of the second oven assembly  36  after the workpiece is baked in a substantially similar manner as that for the second transportation assembly. Lastly, the baked workpiece is transported to the discharge wheel  41  by the divert wheel  382 . 
     It is believed that the exemplary embodiment and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its advantages, the examples hereinbefore described merely being preferred or exemplary embodiment of the disclosure.