Automatic capping machine for disinfectant filling production

Abstract

The utility model relates to the technical field of disinfectant production, in particular to an automatic capping machine for disinfectant filling production, which comprises a seat body, a transmission part is mounted at a slot position on the inner side of the seat body, a cap screwing part positioned on the upper side of the transmission part is mounted on the right side of the upper part of the seat body, and a controller is mounted on the front side of the seat body. A supporting plate located on the rear side of the conveying part is fixedly connected to the left side of the upper portion of the base, a capping part is installed on the front side of a transverse plate at the upper end of the supporting plate, a transfer part located on the lower side of the capping part is installed on the supporting plate, and a conveying returning part located on the lower side of the transfer part is installed on the supporting plate. The conveying and returning part comprises a motor fixed on the inner side of a track of the supporting plate, and through the arrangement of the conveying part, the capping part, the transfer part, the conveying and returning part and other structures, the automatic capping machine for disinfectant filling production can automatically install bottle caps with liquid extraction pipes on bottle bodies filled with disinfectants.

Description

Technical Field

[0001] The utility model relates to the technical field of disinfectant production, in particular to an automatic capping machine for disinfectant filling production. Background Art

[0002] Disinfectant is a liquid disinfectant, which is characterized by strong bactericidal ability and fast action speed. After production, the disinfectant needs to be filled into the bottle, and then the bottle is sealed with a capping machine for subsequent transportation and sales.

[0003] The existing capping machines usually straighten the bottle caps through a vibrating plate, output them from a discharging chute, and then transfer the bottle caps to the bottle bodies by a robot. Since the bottle caps used for some disinfectants are integrated caps of a nozzle and a cap body, a liquid extraction tube is provided on the lower side of the nozzle. This capping method using a robot arm usually only clamps the bottle cap to the bottle mouth, but does not straighten and position the liquid extraction tube of the bottle cap nozzle. As a result, if the liquid extraction tube of the bottle cap nozzle is greatly deflected during installation, it cannot be correctly inserted into the bottle mouth of the bottle body, resulting in installation failure. Therefore, based on the above problems, an automatic capping machine for disinfectant filling production is proposed. Utility Model Content

[0004] The utility model aims to provide an automatic capping machine for disinfectant filling production to solve the problem that the existing automatic capping machine for disinfectant filling production is usually only suitable for installing ordinary bottle caps, and the installation of bottle caps with liquid extraction tubes is easy to fail due to the large deviation of the liquid extraction tube and the inability to correctly insert it into the bottle mouth of the bottle body.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic capping machine for disinfectant filling production comprises a seat body, a transmission part is installed at the inner groove of the seat body, a capping part located on the upper side of the transmission part is installed on the upper right side of the seat body, a controller is installed on the front side of the seat body, a support plate located on the rear side of the transmission part is fixedly connected to the upper left side of the seat body, a capping part is installed on the front side of the upper cross plate of the support plate, a transfer part located on the lower side of the capping part is installed on the support plate, a conveying homing part located on the lower side of the transfer part is installed on the support plate, and the conveying homing part comprises a motor fixed on the inner side of the track of the support plate, and the motor The end of the output shaft of the machine is fixedly connected with a screw rod, and the outer side of the screw rod is spirally connected with a screw block, the screw rod and the screw block are both arranged on the inner side of the track of the support plate, the screw block is slidably connected to the track of the support plate, the front side of the screw block is fixedly connected with a finger cylinder, the outer sides of the left and right output ends of the front side of the finger cylinder are fixedly connected with clamping strips, the lower sides of the clamping strips are fixedly connected with connecting strips, the lower side holes of the connecting strips are rotatably connected with a return piece, the outer side of the front side block of the return piece is fixedly connected with a shifting strip, and the front side of the connecting strip is fixedly connected with an electric push rod whose output end contacts the shifting strip.

[0007] Preferably, the transfer part includes a servo motor, the rear side of the support plate is fixedly connected to the servo motor, the end of the output shaft of the servo motor is fixedly connected to a rotating shaft, the front end of the rotating shaft passes through the support plate and is fixedly connected to a rotating wheel, a group of material troughs distributed at equal angles are provided on the inner side of the outer curved surface of the rotating wheel, suction holes connected to the inner side of the material troughs are provided on the outer side of the material troughs, and the left side of the support plate is fixedly connected to an air pump, the air suction end of the air pump is connected to an air suction pipe, the other end of the air suction pipe is connected to an air suction ring mounted in the annular groove of the rotating wheel, and the air suction ring is connected to the rotating wheel.

[0008] Preferably, the covered part is composed of a hopper and a material conveying tube shell, a channel is arranged on the right side of the lower part of the material conveying tube shell of the covered part, the inner channel of the material conveying tube shell of the covered part is aligned with the material trough up and down, the runner is a circular shell with an annular groove, a through hole connected to the inner side of the runner is opened in the annular groove of the runner, and the front and rear end faces of the vacuum ring are in contact with the front and rear inner walls of the annular groove of the runner.

[0009] Preferably, an arc groove is provided on the inner side of the clamping strip, the homing member and the connecting strip are both provided just below the arc groove of the clamping strip, and the homing member is composed of a central axis rod and blocks on both sides.

[0010] Preferably, the transmission part is composed of a roller, a transmission belt and a drive motor, the output end of the controller is electrically connected to the input end of the drive motor, servo motor, electric motor, finger cylinder and electric push rod of the transmission part, and the cap screwing part is composed of a frame, an electric telescopic rod, a drive motor and multiple groups of rotating rods and rotating blocks.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the transmission part, the capping part, the transfer part and the conveying and returning part and other structures are provided, so that the transmission part can transmit the bottle body filled with disinfectant, and the bottle cap is conveyed downward to the transfer part through the capping part, and the bottle cap is transferred to the top of the bottle body through the transfer part. At this time, the motor of the conveying and returning part is controlled to rotate to rotate the screw rod, and the screw block and the finger cylinder are driven to move upward through the rotation of the screw rod, so that a group of clamping strips connected to the left and right output ends of the finger cylinder can be moved to the left and right sides of the cover body of the bottle cap to be installed. At this time, the finger cylinder is controlled to perform a clamping action, so that the left and right output ends of the finger cylinder drive the clamping strips on both sides to move toward each other to clamp the cover body of the bottle cap to be installed. At the same time, the relative displacement of the clamping strips on both sides will drive the connecting strips and the returning piece connected thereto to move toward each other, so as to return the liquid extraction pipe of the bottle cap spray head, so that the liquid extraction pipe that may be greatly tilted becomes a slightly tilted vertical state. At this time, the reverse rotation of the screw rod can make The thread block drives the finger cylinder, the clamping strip and the clamped bottle cap to move downward, so that the bottle cap is separated from the material trough of the transfer part, so that the liquid extraction tube of the bottle cap nozzle that has been reset can be inserted into the inner side of the bottle mouth of the bottle body, and then the electric push rod is controlled to extend to push the dial to rotate. The rotation of the dial can drive the homing part to rotate, so that the homing part rotates in the direction of the corresponding connecting strip, so that each homing part rotates to both sides of the bottle cap, so that there is no obstruction between the bottle cap and the bottle body. At this time, the clamping strips on both sides are reset and opened by resetting the finger cylinder, so that the bottle cap that loses the clamping falls on the bottle mouth of the bottle body, realizing that the automatic capping machine for disinfectant filling production can automatically install the bottle cap with the liquid extraction tube on the bottle body filled with disinfectant, solving the problem that the existing automatic capping machine for disinfectant filling production is usually only suitable for installing ordinary bottle caps, and the installation of the bottle cap with the liquid extraction tube is easy to fail due to the large deflection of the liquid extraction tube, and it cannot be correctly inserted into the bottle mouth of the bottle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A side view structural schematic diagram of;

[0015] Figure 3 It is a structural schematic diagram of the transfer part of the utility model;

[0016] Figure 4 This is a schematic diagram of the separation structure of the vacuum ring and the runner of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the conveying homing part of the utility model;

[0018] Figure 6 For this utility model Figure 5 A schematic diagram of the structure at A;

[0019] Figure 7 It is a structural schematic diagram of the return member of the utility model;

[0020] Figure 8 For this utility model Figure 5 Schematic diagram of the structure after the homing part is actuated.

[0021] In the figure: 1. base; 2. transmission part; 3. support plate; 4. capping part; 5. transfer part; 51. servo motor; 52. rotating shaft; 53. rotating wheel; 54. material trough; 55. suction hole; 56. vacuum pump; 57. vacuum pipe; 58. vacuum ring; 6. conveying and returning part; 61. motor; 62. screw rod; 63. screw block; 64. finger cylinder; 65. clamping strip; 66. connecting strip; 67. returning piece; 68. pull bar; 69. electric push rod; 7. capping part; 8. controller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0028] See also Figure 1-8 , the utility model provides a technical solution:

[0029] An automatic capping machine for disinfectant filling production includes a seat body 1, a transmission part 2 is installed at the inner groove of the seat body 1, a capping part 7 located on the upper side of the transmission part 2 is installed on the upper right side of the seat body 1, a controller 8 is installed on the front side of the seat body 1, a support plate 3 located on the rear side of the transmission part 2 is fixedly connected to the upper left side of the seat body 1, a capping part 4 is installed on the front side of the upper end cross plate of the support plate 3, a transfer part 5 located on the lower side of the capping part 4 is installed on the support plate 3, a conveying return part 6 located on the lower side of the transfer part 5 is installed on the support plate 3, and the conveying return part 6 includes a motor 61 fixed on the inner side of the track of the support plate 3, and the output shaft end of the motor 61 is fixed A screw rod 62 is fixedly connected, and a screw block 63 is spirally connected to the outer side of the screw rod 62. The screw rod 62 and the screw block 63 are both arranged on the inner side of the track of the support plate 3. The screw block 63 is slidably connected to the track of the support plate 3. The front side of the screw block 63 is fixedly connected to a finger cylinder 64. The outer sides of the left and right output ends of the front side of the finger cylinder 64 are fixedly connected to clamping strips 65. The lower sides of the clamping strips 65 are fixedly connected to connecting strips 66. The lower side holes of the connecting strips 66 are rotatably connected to return pieces 67. The outer side of the front side block of the return piece 67 is fixedly connected to a shifting strip 68. The front side of the connecting strip 66 is fixedly connected to an electric push rod 69 whose output end contacts the shifting strip 68.

[0030] The transfer part 5 includes a servo motor 51, and the servo motor 51 is fixedly connected to the rear side of the support plate 3. The end of the output shaft of the servo motor 51 is fixedly connected to the rotating shaft 52. The front end of the rotating shaft 52 passes through the support plate 3 and is fixedly connected to a rotating wheel 53. A group of material troughs 54 arranged at equal angles are opened on the inner side of the outer curved surface of the rotating wheel 53. The outer sides of the material troughs 54 are all provided with suction holes 55 connected to the inner side of the rotating wheel 53. An air pump 56 is fixedly connected to the left side of the support plate 3. The air suction end of the air pump 56 is connected to an air suction pipe 57. The other end of the air suction pipe 57 is connected to an air suction ring 58 set in the annular groove of the rotating wheel 53. The air suction ring 58 is connected to the rotating wheel 53, so that the servo motor 51 of the transfer part 5 can drive the rotating wheel 53 through the control of the controller 8. The wheel 53 rotates intermittently at an angle of 90° in the clockwise direction, and the air pump 56 cooperates with the air pumping pipe 57 and the air pumping ring 58 to exhaust air from the rotating wheel 53, and the rotating wheel 53 exhausts air through the suction holes 55 arranged at the material trough 54, so that the bottle caps entering the material trough 54 are adsorbed and positioned by the suction holes 55 with suction force, so that the bottle caps can be adsorbed and positioned on the inner side of the material trough 54, and the rotation of the rotating wheel 53 can drive the bottle caps to move; the capping part 4 is composed of a hopper and a material delivery tube shell, and a clearance is arranged on the right side of the lower part of the material delivery tube shell of the capping part 4, through which the liquid extraction tube of the bottle cap can be rotated out of the material delivery tube shell of the capping part 4, and the inner channel of the material delivery tube shell of the capping part 4 is aligned with the material trough 54 up and down, through which the liquid extraction tube of the bottle cap can be rotated out of the material delivery tube shell of the capping part 4 The falling bottle cap can enter the inner side of the material trough 54. The rotating wheel 53 is a circular shell with an annular groove. A through hole communicating with the inner side of the rotating wheel 53 is opened at the annular groove of the rotating wheel 53. The front and rear end surfaces of the air pumping ring 58 are in contact with the front and rear inner walls of the annular groove of the rotating wheel 53. Through this arrangement, the air pumping ring 58 can be connected with the rotating rotating wheel 53. The inner side of the clamping strip 65 is provided with an arc groove. Through this arrangement, the contact surface between the clamping strip 65 and the bottle cap cover body is increased, thereby improving the clamping ability of the clamping strip 65. The homing piece 67 and the connecting strip 66 are both arranged on the lower side of the arc groove of the clamping strip 65. The homing piece 67 is composed of a central axis rod and blocks on both sides. Through this arrangement, when the clamping strip 65 clamps the bottle cap, the homing piece 67 can be displaced accordingly to the lower side of the liquid extraction tube Return to its original position so that the liquid extraction tube can be inserted into the bottle mouth of the lower bottle body; the transmission part 2 is composed of a roller, a transmission belt and a drive motor, and the output end of the controller 8 is electrically connected to the input end of the drive motor, servo motor 51, motor 61, finger cylinder 64 and electric push rod 69 of the transmission part 2. Through this arrangement, the controller 8 can control the operation of each electrical appliance, and the cap screwing part 7 is composed of a frame, an electric telescopic rod, a drive motor and multiple groups of rotating rods and rotating blocks. Through this arrangement, the drive motor can drive each group of rotating rods and rotating blocks to rotate, and the electric telescopic rod can adjust the position of each group of rotating rods and rotating blocks so that each group of rotating rods and rotating blocks are in contact with the bottle cap, thereby driving the bottle cap to rotate, so that the cap screwing part 7 can tighten the bottle cap on the bottle body.

[0031] Workflow: The automatic capping machine for disinfectant filling production automatically installs bottle caps with liquid extraction tubes as follows: 1. All electrical appliances are connected to an external power supply and are controlled by the controller 8. 2. The bottles filled with disinfectant can be transmitted through the transmission part 2. The controller 8 will control the drive motor of the transmission part 2 to stop intermittently so that the bottles remain in a fixed position when the caps are installed. 3. The capping part 4 can transport the bottle caps to the feeding tube shell through the hopper. Since the bottle caps with liquid extraction tubes have heavier cap bodies, the bottle caps entering the feeding tube shell through the hopper will move downward with the cap body at the bottom and the liquid extraction tube at the top into the material trough 54 of the transfer part 5. 4. The servo motor 51 of the transfer part 5 is controlled by the controller 8. The control will drive the rotating wheel 53 to intermittently rotate at an angle of 90° in the clockwise direction, and the air pump 56 cooperates with the air suction pipe 57 and the air suction ring 58 to exhaust the rotating wheel 53, and the rotating wheel 53 exhausts air through the suction holes 55 set at the material trough 54, so that the bottle caps entering the material trough 54 are adsorbed and positioned by the suction holes 55 with suction force, so that the bottle caps can be adsorbed and positioned on the inner side of the material trough 54, so that the rotation of the rotating wheel 53 can drive the bottle caps to move; first, the transmission part 2 will transport the bottle body filled with disinfectant to the lower side of the transfer part 5, and the bottle caps are transported downward to the transfer part 5 through the capping part 4, and the bottle caps are transferred to the top of the bottle body through the transfer part 5. At this time, the motor 61 of the control conveying return part 6 is operated to rotate the screw rod 62, and the screw rod The rotation of 62 drives the wire block 63 and the finger cylinder 64 to move upward, so that a group of clamping strips 65 connected to the left and right output ends of the finger cylinder 64 can be moved to the left and right sides of the cover body of the bottle cap to be installed. At this time, the finger cylinder 64 is controlled to perform a clamping action, so that the left and right output ends of the finger cylinder 64 drive the clamping strips 65 on both sides to move toward each other to clamp the cover body of the bottle cap to be installed. At the same time, the relative displacement of the clamping strips 65 on both sides will drive the connecting strips 66 and the homing member 67 connected thereto to move toward each other, and the liquid extraction pipe of the bottle cap spray head is returned to its original position, so that the liquid extraction pipe that may be greatly tilted becomes a slightly tilted vertical state. At this time, the reverse rotation of the screw rod 62 can be used to make the wire block 63 drive the finger cylinder 64, the clamping strips 65 and the clamped bottle cap to move downward, so that the bottle cap is separated from the transfer part. 5, so that the bottle cap nozzle liquid extraction tube that has been reset can be inserted into the inner side of the bottle mouth of the bottle body, and then the electric push rod 69 is controlled to extend to push the dial bar 68 to rotate. The rotation of the dial bar 68 can drive the reset member 67 to rotate, so that the reset member 67 rotates in the direction of the corresponding connecting bar 66, so that each reset member 67 rotates to both sides of the bottle cap, so that there is no obstacle between the bottle cap and the bottle body. At this time, the clamping strips 65 on both sides are reset and opened by resetting the finger cylinder 64, so that the bottle cap that loses the clamping falls on the bottle mouth of the bottle body, completing the installation of the bottle cap, and then the bottle cap is tightened by the subsequent cap screwing part 7 to complete the sealing of the bottle body, so that the automatic capping machine for disinfectant filling production can automatically install the bottle cap with the liquid extraction tube on the bottle body filled with disinfectant.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic capping machine for disinfectant filling production, comprising a seat body (1), characterized in that: A transmission part (2) is installed at the inner groove of the seat body (1), a screwing cover part (7) located on the upper side of the transmission part (2) is installed on the upper right side of the seat body (1), a controller (8) is installed on the front side of the seat body (1), a support plate (3) located on the rear side of the transmission part (2) is fixedly connected to the upper left side of the seat body (1), a cover part (4) is installed on the front side of the upper end horizontal plate of the support plate (3), a transfer part (5) located on the lower side of the cover part (4) is installed on the support plate (3), a conveying return part (6) located on the lower side of the transfer part (5) is installed on the support plate (3), and the conveying return part (6) comprises a motor (61) fixed on the inner side of the track of the support plate (3), and a lead screw (62) is fixedly connected to the end of the output shaft of the motor (61). The outer side of the screw rod (62) is spirally connected to a screw block (63), the screw rod (62) and the screw block (63) are both arranged on the inner side of the track of the support plate (3), the screw block (63) is slidably connected to the track of the support plate (3), the front side of the screw block (63) is fixedly connected to a finger cylinder (64), the outer sides of the left and right output ends of the front side of the finger cylinder (64) are fixedly connected to clamping strips (65), the lower side of the clamping strips (65) are fixedly connected to connecting strips (66), the lower side holes of the connecting strips (66) are rotatably connected to return pieces (67), the outer side of the front side block of the return piece (67) is fixedly connected to a shifting strip (68), and the front side of the connecting strip (66) is fixedly connected to an electric push rod (69) whose output end contacts the shifting strip (68).

2. The automatic capping machine for disinfectant filling production according to claim 1, characterized in that: The transfer part (5) comprises a servo motor (51), the rear side of the support plate (3) is fixedly connected to the servo motor (51), the end of the output shaft of the servo motor (51) is fixedly connected to a rotating shaft (52), the front end of the rotating shaft (52) passes through the support plate (3) and is fixedly connected to a rotating wheel (53), a group of material troughs (54) arranged at equal angles are provided on the inner side of the outer curved surface of the rotating wheel (53), the outer sides of the material troughs (54) are all provided with suction holes (55) connected to the inner side of the rotating wheel (53), the left side of the support plate (3) is fixedly connected to an air pump (56), the air suction end of the air pump (56) is connected to an air suction pipe (57), the other end of the air suction pipe (57) is connected to an air suction ring (58) sleeved in the annular groove of the rotating wheel (53), and the air suction ring (58) is connected to the rotating wheel (53).

3. The automatic capping machine for disinfectant filling production according to claim 2 is characterized in that: The cover part (4) is composed of a hopper and a material conveying tube shell. A channel is provided on the right side of the lower part of the material conveying tube shell of the cover part (4). The inner channel of the material conveying tube shell of the cover part (4) is aligned with the material trough (54) in the upper and lower directions. The runner (53) is a circular shell with an annular groove. A through hole communicating with the inner side of the runner (53) is provided at the annular groove of the runner (53). The front and rear end surfaces of the air pumping ring (58) are in contact with the front and rear inner walls of the annular groove of the runner (53).

4. The automatic capping machine for disinfectant filling production according to claim 1 is characterized by: An arc groove is provided on the inner side of the clamping strip (65), the return piece (67) and the connecting strip (66) are both provided directly below the arc groove of the clamping strip (65), and the return piece (67) is composed of a central axis rod and blocks on both sides.

5. The automatic capping machine for disinfectant filling production according to claim 1 is characterized by: The transmission part (2) is composed of a rotating roller, a transmission belt and a driving motor. The output end of the controller (8) is electrically connected to the input ends of the driving motor, the servo motor (51), the electric motor (61), the finger cylinder (64) and the electric push rod (69) of the transmission part (2). The cap screwing part (7) is composed of a frame, an electric telescopic rod, a driving motor and a plurality of rotating rods and rotating blocks.

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