JPH0664842U - Residual solids removal device in extrusion head - Google Patents

Abstract

(57) [Summary] [Purpose] Extrusion passages 28, 33, 36 and 43 are extrusion heads.
A plurality of extruders 11 are vertically separated from each other in the inside 11.
Be sure to remove residual solids 29, 34, 37, 44 from the. [Composition] The extrusion head 12 is opened, and the gripping means 74 is moved up and down until it coincides with the extrusion passage 33.
Since the gripping means 74 grips the residual solid matter 34, the residual solid matter 34 can be taken out from the extruder 11 as described above. Moreover, since the residual solid matter 34 adhered to the tip of the screw 18 before the rotation is separated from the tip of the screw 18 by the rotation, the residual solid matter 34
There is no need to disconnect it from the middle, so it can be taken out securely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a take-out device for taking out residual solid matter in an extrusion head.

[0002]

[Prior art]

 For example, in the tire industry, extruders are used to manufacture continuous rubber sheets such as treads and side treads, but the type of rubber extruded in such extruders has changed. In this case, in order to empty the inside of the extruder, the rubber remaining in the extrusion head must be taken out after stopping the extruder once.

Conventionally, as a device for taking out the residual solid matter in such an extrusion head, for example, the one described in Japanese Patent Application Laid-Open No. 3-13312 already proposed by the present applicant is known. This is one in which a gripping means capable of gripping the residual solid matter in the extrusion head with the cover removed, and a gripping means between the gripping position in the extrusion head and the discharge position on the side of the extrusion head. The moving means for moving, the releasing means for applying a force to the residual solid matter to separate the residual solid matter from the grasping means when the grasping means reaches the discharge position and releases the grasping for the residual solid matter, and the grasping means. Means, moving means, and control means for controlling the operation of the releasing means.

[0004]

[Problems to be solved by the device]

 However, the residual solid substance that can be taken out by such a conventional residual solid substance removing device in the extrusion head is in a so-called opposite type extruder in which only one extrusion passage is formed downward. However, it cannot be taken out as it is from the so-called picker type extruder in which a plurality of extrusion passages are provided vertically separated in the extrusion head. Moreover, in such a picker-type extruder, the residual solid matter adheres to the tip of the screen, so if you try to grasp and take out the solid matter as it is, the residual solid matter will be cut off from the middle and removed. There is a problem that it may be incomplete.

The present invention is suitable for taking out a residual solid substance from an extruder having a plurality of pushing passages vertically separated from each other in the pushing head, and can take out the solid substance surely. The purpose is to provide.

[0006]

[Means for Solving the Problems]

 The purpose is to remove residual solids in the extrusion head by sequentially removing the residual solids remaining in a plurality of extrusion passages in the extrusion head separated from each other in the vertical direction while opening the extrusion head. And a gripping means for piercing and gripping the residual solid matter and separating the gripped residual solid matter from the tip of the screw by relatively rotating the residual solid matter with the screw of the extruder. An elevating means for elevating and lowering the means to a height position of the extrusion passage, and a moving means for moving the gripping means between a gripping position for gripping the residual solid matter and a discharging position for discharging the residual solid matter. It can be achieved by providing.

[0007]

[Action]

 In order to remove the residual solids from any of the extrusion passages in the extrusion head, first, the extrusion head is opened to expose the residual solids, and the lifting means adjusts the gripping means to the height position of the extrusion passages. Raise and lower until Next, the moving means is operated to move the gripping means to a gripping position for gripping the residual solid matter, and then the gripping means pierces and grips the residual solid matter. Next, while the residual solid material is gripped by the gripping means, the residual solid material and the screw of the extruder are relatively rotated to separate the residual solid material from the tip of the screw. After that, the moving means is operated to separate the gripping means from the extrusion head, and at the time of this separation, the residual solid matter adhering to the tip of the screw before turning is cut from the tip of the screw by the turning. Since they are separated from each other, the residual solid matter is not cut off from the middle thereof, which ensures that the entire residual solid matter is taken out from the extrusion head. The residual solid matter taken out of the extrusion head in this way is moved from the holding position to the discharging position by the moving means while being held by the holding means. Then, when reaching the discharge position, the residual solid matter is released from the grasping means and the residual solid matter is released from the grasping means. Next, the residual solid matter in an extrusion passage different from the above-mentioned extrusion passage is taken out. In this case, the extrusion head is opened and the elevating means is activated to take out the gripping means next. Raise and lower until it matches the height of the aisle. Then, by the same operation as described above, the residual solid matter in the extrusion passage is taken out and discharged. By repeating such an operation, the residual solid matter in all the extrusion passages is taken out and discharged.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 11 is a picker type extruder, and an extrusion head 12 of the extruder 11 has a main body 13 in which a plurality of, in this case, four screws extending in the front-back direction are provided. Holes 14, 15, 16, 17 are formed, and these screw holes 14, 15, 16, 17 are arranged at a predetermined distance in the vertical direction. Then, rotating screws 18, 19, 20, and 21 are housed in the respective screw holes 14, 15, 16, and 17, and as a result, when these screws 18, 19, 20, and 21 rotate, Different kinds of extruded materials, for example, raw rubber, are fed forward in the screw holes 14, 15, 16 and 17, respectively. Further, a central head portion 25 protruding forward is integrally formed in the main body 13 between the two screw holes 15 and 16 in the central portion, and the central head portion 25 has a vertical wall thickness as it goes forward. Taper to make it thinner. Reference numeral 26 denotes a middle upper head portion that is swingably connected to the upper end portion of the main body 13 via a pin 27. The middle upper head portion 26 has a closed position shown by a solid line in FIG. , Swings between the closed position and the open position that swings upward. When the middle upper head portion 26 is in the closed position, the middle upper head portion 26 approaches the central head portion 25 and forms a narrow extruding passage 28 extending in the front-rear direction between the central upper portion 25 and the screw hole. The extruded material supplied through 15 is guided forward, and when in the open position, the extruded material remaining in the extruding passage 28, that is, the residual solid material 29 is exposed. Reference numeral 30 denotes an upper head portion swingably connected to the main body 13 via the pin 27, and the upper head portion 30 has a closed position when the piston rod 32 of the cylinder 31 is projected or retracted. , And swings between the closed position and the open position that swings upward. When the upper head portion 30 is in the closed position, the upper head portion 30 approaches the middle upper head portion 26 to form a narrow extruding passage 33 extending in the front-rear direction between the middle upper head portion 26 and the screw hole. The extruded material supplied through 14 is guided forward, and when in the open position, the extruded material remaining in the extruding passage 33, that is, the residual solid material 34 is exposed. Reference numeral 35 denotes a lower middle head portion that is swingably connected to the lower end portion of the main body 13 via a pin 38. The middle lower head portion 35 is closed by a cylinder (not shown) and is moved downward from the closed position. It swings between the open position and the open position. When the middle lower head portion 35 is in the closed position, the middle lower head portion 35 approaches the central head portion 25 and forms a narrow extruding passage 36 extending in the front-rear direction between the central head portion 25 and the screw hole 16. The extruded material to be fed is guided forward, and when in the open position, the extruded material remaining in the extruding passage 36, that is, the residual solid material 37 is exposed. Reference numeral 40 denotes a lower head portion swingably connected to the main body 13 via the pin 38, and the lower head portion 40 has a closed position when the piston rod 42 of the cylinder 41 projects or retracts. , And swings between the closed position and the open position that swings downward. When the lower head portion 40 is in the closed position, the lower head portion 40 approaches the middle lower head portion 35 and forms a narrow extruding passage 43 extending in the front-rear direction between the lower middle portion 35 and the middle lower head portion 35. The extruded material supplied through 17 is guided forward, and when in the open position, the extruded material remaining in the extruding passage 43, that is, the residual solid matter 44 is exposed. Thus, a plurality, here four, of extrusion passages 28, 33, 36, 43 are formed in the extrusion head 12 so as to be vertically separated. Reference numeral 46 denotes a die mounted on the front ends of the middle upper head portion 26, the upper head portion 30, the middle lower head portion 35, and the lower head portion 40 when they are all in the closed position. The extruded material from the extruding passages 28, 33, 36, 43 is extruded to form a continuous rubber sheet such as a tread or a side tread.

In FIGS. 1, 2, and 3, reference numeral 50 denotes a take-out device provided in front of the extrusion head 12. The take-out device 50 is mounted on a pair of rails 52 laid on the floor surface 51 and extending in the left-right direction. It has a movable carriage 53 which can move along it, and rollers 54 rolling on the rail 52 are rotatably supported at the four corners of the lower surface of the movable carriage 53. In addition, a vertically extending screw shaft 55 is rotatably supported by the moving carriage 53, and a vertically extending guide rod 56 is fixed, and the guide rod 56 is slidably inserted into the screw shaft 55. The lift table 57 is screwed. A pair of rails 58 extending in the front-rear direction are laid on the lifting platform 57, and a plurality of slide bearings 49 mounted on the lower surface of the movable platform 59 are slidably engaged with the rails 58. . A rotary actuator 60 is fixed to the tip (rear end) of the movable table 59, and a cylindrical body 62 is rotatably supported on the outside of the rotary actuator 60 via a bearing 61.

A connecting body 63 is fixed to the rear end of the cylindrical body 62, and the tip of a rotary shaft 64 of the rotary actuator 60 is connected to the connecting body 63. A head side of a cylinder 65 extending in the front-rear direction is connected to the connecting body 63, and a connecting plate 67 is attached to the tip of a piston rod 66 of the cylinder 65. The base ends of a pair of grip claws 68 and 69 are rotatably connected to the connecting plate 67, and the base ends of transmission links 70 and 71 are connected to the connecting body 63. , 71 are connected to the central portions of the holding claws 68, 69. As a result, when the cylinder 65 operates and the piston rod 66 retracts, the gripping claws 68 and 69 swing and close so that they approach each other around the base end, and the tip end of the gripping claws 68 and 69 is retained. Stick into solid objects 29, 34, 37, 44 and hold them. Here, the tips of the gripping claws 68, 69 are curved inward and sharply pointed so that the residual solid matters 29, 34, 37, 44 can be reliably gripped. The cylindrical body 62, the connecting body 63, the cylinder 65, the connecting plate 67, the gripping claws 68, 69, and the transmission links 70, 71 as a whole, as a whole, the residual solids 29, 34, A gripping means 74 capable of piercing and gripping 37, 44 is configured, and when the gripping means 74 grips the residual solids 29, 34, 37, 44, rotation of the rotary actuator 60. When the shaft 64 is rotated, for example, alternately rotated in the forward and reverse directions by about 45 degrees, the residual solids 29, 34, 37, 44 are rotated relative to the screws 18, 19, 20, 21 respectively. , The residual solids 29, 34, 37, 44 are separated from the tips of the screws 18, 19, 20, 21 respectively.

A motor 76 is mounted on the moving carriage 53, and the rotation of the motor 76 is transmitted to the screw shaft 55 via a belt 77 to rotate the screw shaft 55. As a result, the ascending / descending table 57, the movable table 59, and the gripping means 74 are integrally moved up and down until they coincide with the desired height position of the extrusion passages 28, 33, 36, 43. The above-mentioned motor 76 and belt 77 together constitute an elevating means 78 for elevating and lowering the gripping means 74 until they coincide with the height positions of the push-out passages 28, 33, 36, 43.

A motor 80 is mounted on the moving carriage 53, and the rotation of the motor 80 is transmitted via a belt 81 to a rotary shaft 82 connecting the pair of rollers 54. As a result, when the motor 80 operates, the rollers 54 rotate, and the moving carriage 53, the lifting platform 57, and the movable platform 59 are separated along the rail 52 to the position immediately before the extrusion head 12 and the lateral side of the extrusion head 12. It moves to a position immediately before the installed discharge conveyor 83. Further, a cylinder 86 extending in the front-rear direction is attached to a bracket 85 attached to the front end of the elevating table 57, and the tip of a piston rod 87 of this cylinder 86 is connected to the movable table 59. As a result, when the movable carriage 53 is located immediately in front of the extrusion head 12, and the piston rod 87 of the cylinder 86 projects, the gripping means 74 grips the desired residual solids 29, 34, 37, 44. When the piston rod 87 of the cylinder 86 projects when the moving carriage 53 is located immediately before the discharge conveyor 83, the gripping means 74 grips the residual solid matter 29, 34, 37, 44 is moved to the discharge position B just above the upstream end of the discharge conveyor 83. The roller 54, the motor 80, the belt 81, the rotating shaft 82, and the cylinder 86 described above as a whole include a gripping position A at which the gripping means 74 grips the residual solids 29, 34, 37, 44, and the residual solids 29, 34 ,. A moving means 88 for moving between 37 and 44 and the discharging position B for discharging is formed.

Reference numerals 91 and 92 denote cylinders installed in the vicinity of the gripping means 74. These cylinders 91 and 92 are attached to the movable table 59 via a bracket (not shown). A plurality of contact plates 95 and 96 are fixed to the tips of the piston rods 93 and 94 of these cylinders 91 and 92, respectively, and these contact plates 95 and 96 are gripped by the operation of the cylinders 91 and 92. It can be inserted into slits 97 and 98 formed at the tips of 68 and 69. When the contact plates 95, 96 are inserted into the slits 97, 98 and the residual solids 29, 34, 37, 44 are attached to the grip claws 68, 69, the contact plates 95, 96 are An impact force is applied to the residual solids 29, 34, 37, 44 to separate the residual solids 29, 34, 37, 44 from the gripping means 74. The cylinders 91, 92 and the contact plates 95, 96 described above as a whole are configured to apply a force to the residual solids 29, 34, 37, 44 at the discharge position B to remove the residual solids 29, 34, 37, 44. A detaching means 99 for detaching from the gripping means 74 is configured. Although the cylinders 91 and 92 are attached to the movable table 59 in this embodiment, they may be attached to the discharge portion via a bracket (not shown).

Next, the operation of the embodiment of the present invention will be described. It is now assumed that the screws 18, 19, 20, 21 of the extruder 11 are rotating. At this time, different types of extruded materials are fed forward through the screw holes 14, 15, 16, 17 and the extrusion passages 28, 33, 36, 43, and are extruded through the die 46 to form a continuous rubber sheet. Become. Next, when such an extruding operation is completed, the rotation of each of the screws 18, 19, 20, 21 is stopped, but at this time, the residual solids 29 in the respective extruding passages 28, 33, 36, 43 are stopped. , 34, 37, 44 remain, these residual solids 29, 34, 37, 44 must be removed from each extrusion passage 28, 33, 36, 43 so as not to interfere with the next extrusion operation.

In this case, first, the residual solids on the outer side are sequentially extracted from the residual solids 34 in the extrusion passage 33 in this case, and the extraction operation is as follows. That is, first, the motor 80 is actuated to rotate the roller 54, and the moving carriage 53, the lifting platform 57, the movable platform 59, and the gripping means 74 are moved along the rail 52 from the position immediately before the discharge conveyor 83 to the extrusion head 12. Move to the previous position. Next, the piston rod 32 of the cylinder 31 is retracted, and the upper head 30 is swung upward from the closed position to the open position to expose the residual solid matter 34 in the pushing passage 33. At this time, the motor 76 is operated to rotate the screw shaft 55, and the elevating table 57 is moved up and down until the gripping means 74 coincides with the height position of the extrusion passage 33. Next, the piston rod 87 of the cylinder 86 is projected to move the gripping means 74 to the gripping position A, that is, the position for gripping the residual solid matter 34.

Next, by retracting the piston rod 66 of the cylinder 65 and closing the gripping claws 68, 69, the tips of the gripping claws 68, 69 are pierced into the residual solid material 34 and are gripped. Next, while the residual solid matter 34 is being grasped by the grasping means 74, the rotary shaft 64 of the rotary actuator 60 is repeatedly rotated about 45 degrees in the forward and reverse directions for 4 or 5 times, and the residual solid matter 34 and the extruder are rotated. Relative rotation is repeatedly generated between the screw 11 and the screw 18. At this time, the residual solid matter 34 adheres to the tip of the screw 18 that does not rotate, but the relative solid matter 34 separates the residual solid matter 34 from the tip of the screw 18. After that, the motor 76 is operated to slightly raise the lifting table 57 and the gripping means 74 to remove the residual solid matter 34 from the middle upper head portion 26, and the piston rod 87 of the cylinder 86 is retracted to move the gripping means 74 forward. And the residual solid material 34 is separated from the extrusion head 12 while being held by the holding means 74. At the time of this separation, the residual solid matter 34 adhered to the tip of the screw 18 before the rotation is separated from the tip of the screw 18 by the rotation, so that the residual solid matter 34 may not be cut from the middle. Rather, this ensures that the entire residual solid 34 is removed from the extrusion head 12.

The residual solid matter 34 taken out from the extrusion head 12 in this manner is conveyed from the position immediately before the extrusion head 12 to the position immediately before the carry-out conveyor 83 by the operation of the motor 80, and thereafter, the piston rod of the cylinder 86. When 87 is projected, it is moved to the discharge position B while being held by the holding means 74. When the residual solid 34 reaches the discharge position B, the piston rod 66 of the cylinder 65 is projected to open the gripping claws 68 and 69, thereby releasing the residual solid 34 from the grip of the gripping means 74. When the residual solid matter 34 adheres to the gripping means 74 at this time, the residual solid matter 34 may not be easily separated from the gripping means 74. At this time, the piston rods 93, 94 of the cylinders 91, 92 are projected, the contact plates 95, 96 are passed through the slits 97, 98 of the gripping claws 68, 69 and pressed against the residual solid matter 34. As a result, an impact force is applied to the residual solid matter 34, and the residual solid matter 34 is reliably separated from the gripping means 74 and transferred to the discharge conveyor 83. Next, the discharge conveyor 83 is operated to discharge the residual solid matter 34 for kneading. At this time, the piston rods 87, 93, 94 of the cylinders 86, 91, 92 are retracted, the gripping means 74 is retracted, and the contact plates 95, 96 are pulled out from the slits 97, 98.

Next, the remaining solid matter 29 in the extrusion passage different from the above-mentioned extrusion passage 33, here the extrusion passage 28 is taken out. In this case, the motor 80 is operated to push out the movable carriage 53. After moving to the position immediately before the head 12, the middle upper head part 26 is swung from the closed position to the open position to expose the residual solid matter 29 in the extrusion passage 28. At this time, the motor 76 is operated to lower the elevating table 57 until the gripping means 74 matches the height position of the pushing passage 28. Thereafter, the residual solid matter 29 is taken out and discharged in the same manner as described above. The same applies to the removal of the residual solids 37, 44 in the extrusion passages 36, 43, but in this case, the residual solids on the outer side, that is, the residual solids 44, 37 are removed in this order. In this way, the residual solid matter in all the extrusion passages is taken out and discharged.

In the embodiment described above, the rotary actuator 60 is operated to cause relative rotation between the residual solid matter 34 and the screw 18 of the extruder 11. In the above, while the rotary actuator 60 is omitted and the gripping step 74 is kept stopped, the screws 18, 19, 20, and 21 are rotated by a predetermined angle so that the residual solid matter and the screw of the extruder 11 are separated from each other. It is also possible to cause relative rotation.

[0020]

[Effect of device]

 As described above, according to the present invention, it is possible to take out the residual solids from the extruder provided with a plurality of extrusion passages separated in the upward and downward directions in the extrusion head, and also to take out the solids reliably. be able to.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is a plan sectional view thereof.

FIG. 3 is a plan view of the vicinity of a gripping means.

[Explanation of symbols]

 12 ... Extrusion head 18, 19, 20, 21 ... Screw 28, 33, 36, 43 ... Extrusion passage 29, 34, 37, 44 ... Residual solids 50 ... Extraction device 74 ... Grasping means 78 ... Lifting means 88 ... Moving means A ... Gripping position B ... Discharge position

Claims (1)

[Scope of utility model registration request] 1. An apparatus for removing residual solid matter in an extrusion head, wherein the residual solid matter remaining in a plurality of extrusion passages in an extrusion head separated in the vertical direction is sequentially taken out while the extrusion head is opened. The sticking means for piercing and gripping the residual solid matter and separating the gripped residual solid matter from the tip of the screw by relatively rotating the gripped residual solid matter with the screw of the extruder, Elevating means for elevating and lowering to a height position of the extrusion passage, and moving means for moving the gripping means between a gripping position for gripping the residual solid matter and a discharging position for discharging the residual solid matter are provided. A device for removing residual solids in an extrusion head, characterized by: