JP2015199247A - Apparatus and method for production of rubber roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for production of a rubber roll which can suppress variation of the thickness of rubber members coated on a core metal, in the peripheral direction of a core material, relative to a target value.SOLUTION: A second core metal 22C is delivered to a rubber member 72, while its one end is pressed toward the bottom surface of a chuck 114 through a third core metal 22D, and the other end of the second core metal 22C is supported to the bottom surface of a chuck 146 through a first core metal 22B. The configuration suppresses variation of the thickness of rubber members 72 coated on the core metal 22, in the peripheral direction of the core metal 22, relative to a target value.

Description

  The present invention relates to a rubber roll manufacturing apparatus and a rubber roll manufacturing method.

  Patent Document 1 describes a core metal supply unit that supplies a metal core to an extrusion unit that extrudes a rubber material supplied from a rubber material supply unit into a cylindrical shape. And this core metal supply part is comprised including several pairs of rollers.

JP 2013-103473 A

  The subject of this invention is suppressing that the thickness of the rubber member coat | covered with the metal core varies with respect to the target value in the circumferential direction of the core material.

  The rubber roll manufacturing apparatus according to claim 1 includes: an extrusion mechanism that extrudes a rubber material as a cylindrical rubber member; and the rubber member that is extruded by the extrusion mechanism while pressing one end of the columnar core metal. And a support mechanism for supporting the other end of the metal core, the one end of which is pressed by the output mechanism and covered with the rubber member.

  The rubber roll manufacturing apparatus according to claim 2 is the rubber roll manufacturing apparatus according to claim 1, wherein the feeding mechanism includes a plurality of pressing members that press one end of the core metal, and one pressing member is the one core. After pressing one end of the metal, the other pressing member presses one end of the other core metal to sequentially feed the core metal to the rubber member, and the support mechanism supports the other end of the core metal. A plurality of supporting members are provided, and after one supporting member supports the other end of the one core bar, another supporting member sequentially supports the other end of the other cored bar.

  The rubber roll manufacturing method according to claim 3 presses one end of a columnar cored bar, and feeds the cored bar from the other end of the cored bar to a rubber member pushed out in a cylindrical shape to the rubber member. And a supporting step of supporting one end of the cored bar covered with the rubber member by pressing one end and feeding the rubber member from the other end.

  The rubber roll manufacturing method according to claim 4 is the rubber roll manufacturing method according to claim 3, wherein in the covering step, after one pressing member presses one end of the one core metal, the other pressing member is the other. One end of the core metal is pressed to sequentially feed the core metal to the rubber member. In the support step, after one support member supports the other end of the one core metal, the other support member The other end of the other cored bar is sequentially supported.

  According to the rubber roll manufacturing apparatus of claim 1, compared with the case where the other end of the core material fed to the rubber member is not supported while one end is pressed, the thickness of the rubber member covered with the core metal is It is possible to suppress variation with respect to the target value in the circumferential direction of the cored bar.

  According to the rubber roll manufacturing apparatus of claim 2, compared to the case where at least one of the pressing member and the supporting member is provided, the core metal can be efficiently fed to the rubber member, and the rubber member The other end of the core metal covered with can be efficiently supported.

  According to the rubber roll manufacturing method of claim 3, as compared with the case where the other end of the core material fed to the rubber member is not supported while one end is pressed, the thickness of the rubber member covered with the core metal is It is possible to suppress variation with respect to the target value in the circumferential direction of the cored bar.

  According to the rubber roll manufacturing method of claim 4, compared to a case where at least one of the pressing member and the supporting member is provided, the core metal can be efficiently sent to the rubber member, and the rubber member The other end of the coated metal core can be efficiently supported.

It is the schematic block diagram which showed the rubber roll manufacturing apparatus which concerns on embodiment of this invention. (A) (B) (C) It is the operation | movement figure which showed operation | movement of the holding | grip module with which the metal core supply mechanism of the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) (C) It is the operation | movement figure which showed operation | movement of the support module with which the support mechanism of the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. It is the block diagram which showed the metal core supply mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. It is the block diagram which showed the support mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. It is the front view which showed the lower part of the extrusion mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped, and the upper part of the support mechanism. (A) (B) (C) It is the operation | movement figure which showed operation | movement of the metal core supply mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) (C) It is the operation | movement figure which showed operation | movement of the metal core supply mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) It is the operation | movement figure which showed operation | movement of the support mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) It is the operation | movement figure which showed operation | movement of the support mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) It is the operation | movement figure which showed operation | movement of the support mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. (A) (B) It is the operation | movement figure which showed operation | movement of the support mechanism with which the rubber roll manufacturing apparatus which concerns on embodiment of this invention was equipped. It is sectional drawing which showed the rubber roll manufactured by the rubber roll manufacturing apparatus which concerns on embodiment of this invention. It is the schematic block diagram which showed the rubber roll manufacturing apparatus which concerns on embodiment of this invention.

  An example of a rubber roll manufacturing apparatus and a rubber roll manufacturing method according to an embodiment of the present invention will be described with reference to FIGS. In the figure, an arrow V indicates the vertical direction of the apparatus and the vertical direction, and an arrow H indicates the horizontal direction of the apparatus and the horizontal direction.

  The rubber roll (rubber-coated shaft body) manufactured by the rubber roll manufacturing apparatus and the rubber roll manufacturing method according to the present embodiment is obtained by coating a cylindrical rubber member on the outer peripheral surface of a cylindrical cored bar. This rubber roll is used, for example, as a charging roll that contacts an image carrier (photosensitive drum) of an image forming apparatus and rotates in a driven manner to charge the outer peripheral surface of the image carrier.

(Rubber roll manufacturing equipment)
As shown in FIG. 1, the rubber roll manufacturing apparatus 10 includes an extruding mechanism 12 composed of a so-called cross head die, a separating mechanism 14 disposed below the extruding mechanism 12 in the vertical direction, and a vertical direction of the separating mechanism 14. And a support mechanism 16 disposed below. Furthermore, the rubber roll manufacturing apparatus 10 includes a rubber material supply mechanism 18 disposed on one side of the extrusion mechanism 12 in the horizontal direction (right side in FIG. 1), and a core metal supply mechanism disposed above the extrusion mechanism 12 in the vertical direction. 24 (an example of a delivery mechanism).

[Rubber material supply mechanism]
The rubber material supply mechanism 18 has a screw 28 inside a cylindrical main body 26 extending in the horizontal direction. The screw 28 is rotated by a drive motor 30. On the drive motor 30 side of the main body portion 26, an insertion port 32 for introducing a rubber material is provided. A heater 20 for heating the rubber material introduced into the main body portion 26 from the insertion port 32 is attached to the main body portion 26.

  In the above configuration, the rubber material charged from the charging port 32 is heated by the heater 20 inside the main body portion 26 and is sent out toward the extrusion mechanism 12 while being kneaded by the rotating screw 28. The speed at which the rubber material is fed out is adjusted by adjusting the rotational speed of the screw 28.

(Extrusion mechanism)
The extruding mechanism 12 includes a cylindrical case 34 connected to the left end of the rubber material supply mechanism 18 and extending in the vertical direction, a columnar mandrel 36 disposed in the center of the case 34, and a lower part of the mandrel 36. And a discharge head 38 disposed on the surface.

  The mandrel 36 is held in the case 34 by a holding member 40, and the discharge head 38 is held in the case 34 by a holding member 42. An annular flow of the rubber material between the outer peripheral surface of the mandrel 36 (in part, the outer peripheral surface of the holding member 40) and the inner peripheral surface of the holding member 42 (in part, the inner peripheral surface of the discharge head 38). A flow path 44 is formed.

  Further, a supply hole 46 for supplying the cylindrical cored bar 22 is formed in the central portion of the mandrel 36 so as to extend in the vertical direction. The lower portion of the mandrel 36 in the vertical direction has a tapered shape toward the lower end (tip). In addition, a region below the lower end of the mandrel 36 is a joining region 48 where the core metal 22 supplied from the supply hole 46 and the rubber material supplied from the annular flow path 44 merge. That is, the rubber material is pushed out as the cylindrical rubber member 72 toward the merging region 48, and the cored bar 22 is fed out (inserted) into the central portion of the rubber member 72 pushed out into the cylindrical shape. Yes.

[Core metal supply mechanism]
The cored bar supply mechanism 24 includes a pressing unit 80 as an example of a pressing member that presses one end of the cored bar 22 and a pressing unit 82 as an example of a pressing member. Note that a primer is applied in advance to the outer peripheral surface of the cored bar 22 in order to improve the adhesion to the rubber member 72. Details of the cored bar supply mechanism 24 will be described later.

(Separation mechanism)
As shown in FIG. 6, the separation mechanism 14 includes a pair of separation members 60 disposed below the discharge head 38 in the vertical direction. The pair of separation members 60 are discharged from the extrusion mechanism 12 and are arranged to face each other so as to sandwich the rubber roll portion 56 in which the rubber member 72 is covered with the cored bar 22. Each separating member 60 is formed with a cutting portion 60A that protrudes toward the rubber roll portion 56 and has a sharp tip. Each separating member 60 is moved in the left-right direction in the drawing so that the leading ends of the respective cutting portions 60A are in contact with or separated from each other by a drive mechanism (not shown).

  In the above configuration, the rubber roll portion 56 is separated into the rubber roll body 74 divided for each cored bar 22 by moving the separating member 60 to contact the tip of the separated cutting portion 60A. (See FIG. 10A).

[Support mechanism]
As shown in FIG. 1, the support mechanism 16 is disposed below the separation mechanism 14 in the vertical direction, and a support unit 130 as an example of a support member that supports the other end of the cored bar 22, and an example of a support member The support unit 132 is provided. Details of the support mechanism 16 will be described later.

(Function)
Next, the operation (rubber roll manufacturing method) of the rubber roll manufacturing apparatus 10 will be described.

  As shown in FIG. 1, the rubber material introduced into the insertion port 32 of the rubber material supply mechanism 18 is heated by the heater 20 inside the main body portion 26 and directed toward the extrusion mechanism 12 while being kneaded by the rotating screw 28. Sent out.

  The rubber material fed from the rubber material supply mechanism 18 to the extrusion mechanism 12 and supplied to the extrusion mechanism 12 can be annularly formed through an annular flow path 44 formed inside the extrusion mechanism 12. The rubber material flowing through the annular flow path 44 flows toward the joining area 48 and is pushed out as a cylindrical rubber member 72 in the joining area 48.

  On the other hand, the cored bar 22 is supplied to the supply hole 46 of the mandrel 36 by the cored bar supply mechanism 24. The core metal 22 supplied by the core metal supply mechanism 24 presses the front core metal 22 existing in the supply hole 46 of the mandrel 36, so that the front core metal 22 is pushed out in a cylindrical shape in the merge area 48. The rubber member 72 is sent to the center. As a result, the rubber roll portion 56 in which the outer peripheral surface of the cored bar 22 is covered with the rubber member 72 is discharged from the discharge head 38 (covering step).

  Here, the front metal core 22 is fed out to the center of the rubber member 72 in a state where the front metal core 22 is further supported by the support unit 130 of the support mechanism 16 with respect to the front metal core 22. (Support process: details will be described later).

  Furthermore, in a state where the movement of the cored bar 22 is once stopped, which will be described later, as shown in FIGS. They move in the horizontal direction so that their tips approach each other, and touch each other's tips. As a result, the rubber roll portion 56 is separated into rubber roll bodies 74 for each cored bar 22. Then, the pair of separation members 60 moves in the horizontal direction so as to separate the tips of the cutting portions 60 </ b> A, and the passage of the rubber roll portion 56 between the pair of separation members 60 is allowed.

  The separated rubber roll body 74 is recovered after being supported by the support mechanism 16 and further vulcanized. Further, the rubber member 72 covering the end side of the rubber roll body 74 is cut off from the vulcanized rubber roll body 74 by a not-shown cutting unit, and the rubber roll 76 shown in FIG. 13 is manufactured.

(Main part configuration)
[Core metal supply mechanism]
Next, the core metal supply mechanism 24 will be described.

  As shown in FIG. 4, the core metal supply mechanism 24 includes a pressing unit 80 and a pressing unit 82 that are arranged with the center line C of the supply hole 46 of the mandrel 36 interposed therebetween.

  The pressing unit 80 includes a so-called ball screw structure, and includes a rod 84 that extends in the vertical direction, and a moving member 86 that is screwed and supported by the rod 84 and moves up and down as the rod 84 rotates. Further, the pressing unit 80 includes a servo motor 90 (hereinafter simply referred to as “motor 90”) that rotates the rod 84 forward and backward through a plurality of gears (not shown) in the gear box 88.

  A grip module 92 that grips the end side of the cored bar 22 is attached to the center line C side with respect to the moving member 86. The grip module 92 includes a concave chuck 94 that grips one end (upper end) of the core bar 22 supplied to the supply hole 46 and presses one end (upper end) of the core bar 22, and the other end side of the core bar 22. And a concave chuck 96 for gripping (lower end side). The chuck 96 is disposed above the chuck 94. Further, the grip module 92 includes a main body 98 that supports the chuck 94 and the chuck 96, and the main body 98 is attached to the moving member 86.

  The chuck 94 and the chuck 96 are telescopic, and move to an extended position extending toward the center line C and a contracted position away from the center line C.

  For example, when the other end side of the cored bar 22 is gripped, the chuck 96 moves from the contracted position to the extended position as shown in FIGS. When the other end side of the cored bar 22 is supplied into the chuck 96, the chuck 96 grips the other end side of the cored bar 22 as shown in FIG. The chuck 94 has the same configuration as the chuck 96 except that the concave opening direction is the reverse direction and the one end side of the cored bar 22 is gripped.

  On the other hand, the pressing unit 82 has the same configuration as the pressing unit 80. The pressing unit 82 includes a rod 104 corresponding to the rod 84 of the pressing unit 80 and a moving member corresponding to the moving member 86, as shown in FIG. 106. Further, the pressing unit 82 includes a servo motor 110 (hereinafter simply referred to as “motor 110”) that corresponds to the motor 90 of the pressing unit 80 and rotates the rod 104 via a plurality of gears (not shown) in the gear box 108. Yes. Further, a grip module 112 corresponding to the grip module 92 is attached to the moving member 106, and the grip module 112 includes a chuck 114, a chuck 116, and a main body 118 corresponding to the chuck 94, the chuck 96, and the main body 98. I have.

  When the chucks 94 and 96 grip or release the core bar 22, if the chucks 94 and 96 interfere with the core bar 22, the chucks 94 and 96 move once in the horizontal direction to cause interference. It is designed to avoid it.

[Support mechanism]
Next, the support mechanism 16 will be described.

  As shown in FIG. 5, the support mechanism 16 includes a support unit 130 and a support unit 132 that are arranged with the center line C interposed therebetween.

  The support unit 130 includes a so-called ball screw structure, and includes a rod 134 that extends in the vertical direction, and a moving member 136 that is screwed and supported by the rod 134 and moves up and down as the rod 134 rotates. Further, the support unit 130 includes a servo motor 140 (hereinafter simply referred to as “motor 140”) that rotates the rod 134 forward and backward through a plurality of gears (not shown) in the gear box 138.

  A support module 142 that grips the end side of the rubber roll body 74 (rubber roll portion 56) is attached to the center line C side with respect to the moving member 136. The support module 142 grips the other end side (lower end side) of the rubber roll body 74 and holds the one end side of the rubber roll body 74 with a concave chuck 146 that supports the other end (lower end) of the core metal 22 in the rubber roll portion 56. And a concave chuck 144 for gripping. The chuck 144 is disposed below the chuck 146. Furthermore, the support module 142 includes a chuck 144 and a main body 148 that supports the chuck 146, and the main body 148 is attached to the moving member 136.

  The chuck 146 and the chuck 144 are extendable, and move to an extended position extending toward the center line C and a contracted position away from the center line C.

  For example, when the other end of the rubber roll body 74 is gripped to support the other end of the cored bar 22, the chuck 146 is moved from the contracted position to the extended position as shown in FIGS. Move to. When the other end side of the rubber roll portion 56 is inserted into the chuck 96, the chuck 146 grips the other end side of the rubber roll portion 56 as shown in FIG. The other end of the gold 22 is supported. The chuck 144 has the same configuration as the chuck 146 except that the concave opening direction is reversed.

  On the other hand, the support unit 132 has the same configuration as the support unit 130. The support unit 132 includes a rod 154 corresponding to the rod 134 of the support unit 130 and a moving member corresponding to the moving member 136, as shown in FIG. 156. Further, the support unit 132 includes a servo motor 160 (hereinafter simply “motor 160”) that corresponds to the motor 140 of the support unit 130 and rotates the rod 154 via a plurality of gears (not shown) in the gear box 158. Yes. Further, a support module 162 corresponding to the support module 142 is attached to the moving member 156, and the support module 162 includes a chuck 164, a chuck 166, and a main body 168 corresponding to the chuck 144, the chuck 146, and the main body 148. I have.

  If the chucks 114 and 116 interfere with the rubber roll body 74 (rubber roll portion 56) when the chucks 114 and 116 grip or release the rubber roll body 74 (rubber roll portion 56), the chucks 114 and 116 are affected. Is once moved horizontally to avoid interference.

(Effects of main components)
Next, regarding the operation of the main part configuration (rubber roll manufacturing method), a supply step in which one end of the cored bar 22 is pressed and the cored bar 22 is supplied to the extrusion mechanism 12, and the cored bar 22 is covered with the rubber member 72 The process and the support process for supporting the other end of the cored bar 22 whose one end is pressed will be described separately. Each process is performed simultaneously.

[Supply process]
As shown in FIG. 7A, in the non-operating state of the rubber roll manufacturing apparatus 10, the grip modules 92 and 112 of the pressing units 80 and 82 are positioned at the upper end position on the upper end side of the rods 84 and 104 (hereinafter referred to as “the grip upper end position”). )). Further, the chucks 94, 96, 114 and 116 are located at the contracted positions.

  The rubber roll manufacturing apparatus 10 is in an operating state, and the core metal 22 (hereinafter referred to as “first core metal 22B” for convenience of explanation) from the core metal storage unit (not shown) disposed above the core metal supply mechanism 24 is the center line. It is sent to the cored bar supply mechanism 24 along C. Then, as shown in FIG. 7B, the chuck 96 moves from the contracted position to the extended position. The chuck 96 moved to the extended position grips the other end side of the first core bar 22B.

  When the chuck 96 grips the other end side of the first mandrel 22B, the motor 90 rotates the rod 84, so that the grip module 92 is positioned at the lower end position on the lower end side of the rod 84 as shown in FIG. (Hereinafter referred to as “grip bottom position”). Further, when the grip module 92 moves to the grip bottom position, the chucks 114 and 116 of the grip module 112 move from the contracted position to the extended position. The chuck 114 grips one end side of the first mandrel 22B, and the chuck 116 grasps the other end side of the mandrel 22 (hereinafter, “second mandrel 22C” for convenience of explanation) sent from the mandrel storage unit. Grab.

  When the chuck 114 grips one end side of the first mandrel 22B, the chuck 96 releases the grip on the other end side of the first mandrel 22B and contracts from the extended position, as shown in FIG. 8A. Move to position.

  When the chuck 96 moves to the contracted position, the motor 90 rotates the rod 84, whereby the grip module 92 moves from the grip bottom position to the grip top position, as shown in FIG. 8B. Further, when the motor 110 rotates the rod 104, the grip module 112 moves from the grip upper end position to the grip lower end position. When the grip module 112 moves from the grip top position to the grip bottom position, the bottom surface of the chuck 114 presses one end of the first cored bar 22B downward in the vertical direction. Thereby, the first cored bar 22B is supplied from the other end of the first cored bar 22B to the supply hole 46 of the mandrel 36.

  On the other hand, when the grip module 92 moves to the grip upper end position, the chucks 94 and 96 move from the contracted position to the extended position, and the chuck 94 grips one end side of the second core metal 22C. Further, the chuck 96 grips the other end side of the cored bar 22 (hereinafter, “third cored bar 22D” for convenience of description) sent from the cored bar storage unit.

  When the chuck 94 grips one end side of the second cored bar 22C, the chuck 116 releases the grip on the other end side of the second cored bar 22C, and the chuck 114 moved to the extended position moves to the one end side of the first cored bar 22B. Release the grip. Further, the chucks 114 and 116 move from the extended position to the contracted position. In this state, the other end of the second metal core 22C and one end of the first metal core 22B are separated from each other.

  Then, when the motor 110 rotates the rod 104, the grip module 112 moves from the grip bottom position to the grip top position, as shown in FIG. 8C. Further, when the motor 90 rotates the rod 84, the grip module 92 moves from the grip upper end position to the grip lower end position.

  When the grip module 92 moves from the grip top position to the grip bottom position, the bottom surface of the chuck 94 presses one end of the second cored bar 22C downward in the vertical direction. Thereby, the other end of 22 C of 2nd metal bars and the end of 1st metal bar 22B contact. The other end of the second metal core 22C presses one end of the first metal core 22B, and the second metal core 22C is supplied from the other end of the second metal core 22C to the supply hole 46 of the mandrel 36.

  Here, the first core bar supplied to the supply hole 46 of the mandrel 36 until the other end of the second core bar 22C comes into contact with one end of the first core bar 22B and the first core bar 22B is pressed. The 22B movement is temporarily stopped (temporarily stopped). The other end of the once stopped cored bar 22B is located at a position between the pair of cutting portions 60A.

  On the other hand, when the grip module 112 moves to the grip upper end position, the chucks 114 and 116 move from the contracted position to the extended position, and the chuck 114 grips one end side of the third cored bar 22D. Further, the chuck 116 grips the other end side of the cored bar 22 (“fourth cored bar 22E”) sent from the cored bar storage unit. By repeating this process, the cored bar supply mechanism 24 sequentially supplies the cored bar 22 to the supply hole 46.

[Coating process]
The first cored bar 22B pressed by the other end of the second cored bar 22C (pressed by the pressing unit 80 via the second cored bar 22C) is sent out to the cylindrical rubber member 72 in the merge area 48. . As a result, as shown in FIG. 6, the rubber roll portion 56 (hereinafter referred to as “first rubber roll portion 56 </ b> B” for convenience of explanation) whose outer peripheral surface of the first core bar 22 </ b> B is covered with the rubber member 72 is discharged from the discharge head 38. The

[Support process]
As shown in FIG. 9A, in the non-operating state of the rubber roll manufacturing apparatus 10, the support modules 142 and 162 of the support units 130 and 132 are positioned at the upper end position (hereinafter, “support upper end position” of the rods 134 and 154. )). Further, the chucks 144, 146, 164 and 166 are located at the contracted positions. Further, the ends of the pair of cutting portions 60A are separated from each other.

  When the first rubber roll portion 56B is discharged from the discharge head 38 and once stopped, the chuck 146 moves from the contracted position to the extended position, as shown in FIG. 9B. Then, the chuck 146 moved to the extended position grips the other end side of the first rubber roll portion 56B. The other end of the first metal core 22B is supported by the bottom surface of the chuck 146. Then, as shown in FIG. 10A, the pair of separating members 60 moves in the horizontal direction so that the tips of the pair of cutting portions 60A are close to each other, and the tips of the pair of cutting portions 60A come into contact with each other. Thereby, the first rubber roll portion 56B is separated into rubber roll bodies 74 (hereinafter referred to as “first rubber roll body 74B” for convenience of description) for each cored bar 22. When the first rubber roll portion 56B is the first rubber roll body 74B, the pair of separating members 60 moves in the horizontal direction so that the ends of the pair of cutting portions 60A are separated from each other.

  Further, the motor 140 rotates the rod 134 while the other end of the first core bar 22B constituting the first rubber roll body 74B is supported by the chuck 146. Accordingly, as shown in FIG. 10B, the support module 142 moves to the lower end position on the lower end side of the rod 134 (hereinafter referred to as “support lower end position”).

  At this time, as shown in FIG. 14, in the core metal supply mechanism 24, the motor 110 rotates the rod 104 so that the grip module 112 moves from the grip upper end position to the grip lower end position. When the grip module 112 moves from the grip upper end position to the grip lower end position, the bottom surface of the chuck 114 presses one end of the third metal core 22D downward in the vertical direction. Thereby, the other end of the third core metal 22D presses one end of the second core metal 22C, and the second core metal 22C whose one end is pressed is sent out from the other end of the second core metal 22C to the rubber member 72. . Further, the other end of the second metal core 22C fed to the rubber member 72 presses one end of the first metal core 22B constituting the first rubber roll body 74B. The other end of the first mandrel 22B whose one end is pressed is supported by the bottom surface of the chuck 146 as described above.

  Thus, the first core bar 22B, the second core bar 22C, and the third core bar 22D move in the vertical direction while being sandwiched between the chuck 114 of the core bar supply mechanism 24 and the chuck 146 of the support mechanism 16. To do. Then, the second cored bar 22C is sent out to the rubber member 72 as described above during this movement.

  Then, after the grip module 112 is moved from the grip upper end position to the grip lower end position and the cored bar 22 is temporarily stopped, the support module 142 further moves downward to move the support module 142 to the support lower end position. To do. Thus, one end of the first rubber roll body 74B is separated from the other end of the rubber roll portion 56 (hereinafter, “second rubber roll portion 56C” for convenience of explanation) in which the outer peripheral surface of the second cored bar 22C is covered with the rubber member 72. To do.

  When one end of the first rubber roll body 74B is separated from the other end of the second rubber roll portion 56C, the chucks 164 and 166 of the support module 162 move from the contracted position to the extended position, as shown in FIG. To do. Then, the chuck 164 grips one end side of the first rubber roll body 74B. The chuck 166 holds the other end side of the second rubber roll portion 56C. Thereby, the other end of the second cored bar 22C is supported by the bottom surface of the chuck 166.

  Then, as shown in FIG. 11A, the chuck 146 moves from the extended position to the contracted position. Furthermore, the separating member 60 moves in the horizontal direction so that the tips of the cutting portions 60A approach each other, and brings the tips of each other into contact with each other. As a result, the second rubber roll portion 56C is separated into rubber roll bodies 74 (hereinafter referred to as “second rubber roll body 74C” for convenience of explanation) for each cored bar 22.

  Then, as shown in FIG. 11B, the separating member 60 moves in the horizontal direction so that the tips of the cutting portions 60A are separated from each other. Furthermore, when the motor 160 rotates the rod 154, the support module 162 moves to the support lower end position. Further, as the motor 140 rotates the rod 134, the support module 142 moves from the support lower end position to the support upper end position.

  In the same manner as described above, one end of the second rubber roll body 74C and the outer peripheral surface of the third cored bar 22D are covered with the rubber member 72 (hereinafter referred to as “third rubber roll portion 56D” for convenience of explanation). Is spaced apart from the other end.

  When one end of the first rubber roll body 74B is separated from the other end of the second rubber roll portion 56C, the chucks 144 and 146 of the support module 142 move from the contracted position to the extended position. Then, the chuck 144 grips one end side of the second rubber roll body 74C. Further, the chuck 146 grips the other end side of the third rubber roll portion 56D. As a result, the other end of the third cored bar 22D is supported by the bottom surface of the chuck 146.

  Then, as shown in FIG. 12A, the separating member 60 moves in the horizontal direction so that the distal ends of the cutting portions 60A approach each other, thereby bringing the distal ends into contact with each other. Thereby, the third rubber roll portion 56D is separated into rubber roll bodies 74 (hereinafter referred to as “third rubber roll body 74D” for convenience of explanation) for each cored bar 22.

  Further, as shown in FIG. 12B, the chuck 166 moved to the extended position releases the grip on the other end side of the second rubber roll body 74C, and the chuck 164 moved to the extended position becomes the first rubber roll body 74B. Release the grip on one end. Thereby, the first rubber roll body 74B falls and is collected in the collection box 180.

(Summary of main components)
As described above, the bottom surface of the chuck 114 of the grip module 112 presses one end of the third cored bar 22D downward in the vertical direction. As a result, the other end of the third metal core 22D presses one end of the second metal core 22C, and the second metal core 22C is supplied from the other end of the second metal core 22C to the supply hole 46 of the mandrel 36. The other end of the second metal core 22C supplied to the supply hole 46 presses one end of the first metal core 22B. The other end of the first mandrel 22 </ b> B whose one end is pressed is supported by the bottom surface of the chuck 146 of the support module 142. That is, the first core bar 22B, the second core bar 22C, and the third core bar 22D move in the vertical direction while being sandwiched between the chuck 114 and the chuck 146. In other words, the other end of the second metal core 22C fed to the rubber member 72 while one end is pressed against the bottom surface of the chuck 114 via the third metal core 22D is connected to the bottom surface of the chuck 146 via the first metal core 22B. It is supported.

  For this reason, in the rubber roll manufacturing apparatus 10, slip generated between the roll and the core metal 22 is generated as compared with the case where the core metal 22 is sent to the rubber member 72 by rotating the roll while sandwiching the core metal between the roll pairs. It is suppressed. Thereby, it is suppressed that the thickness of the rubber member 72 covered by the cored bar 22 varies with respect to the target value in the longitudinal direction of the cored bar 22.

  Further, in the rubber roll manufacturing apparatus 10, the cored bar 22 that moves in the merging region 48 is horizontal compared to the case where the cored bar 22 is sent to the rubber member 72 by rotating the roll while sandwiching the cored bar between the roll pair. It is possible to suppress the shift to the (left and right direction on the paper surface). Thereby, it is suppressed that the thickness of the rubber member 72 covered by the cored bar 22 varies with respect to the target value in the circumferential direction of the cored bar 22.

  As described above, in the rubber roll manufacturing apparatus 10 and the rubber roll manufacturing method according to the present embodiment, the thickness of the rubber member 72 covered with the core metal 22 is in the longitudinal direction of the core metal 22 and in the circumferential direction of the core metal 22. , Variation from the target value is suppressed. In addition, when the other end side of the metal core 22 covered with the rubber member 72 protrudes outside from the discharge head 38, the metal core 22 is temporarily stopped. For this reason, it is conceivable that the thickness of the rubber member 72 coated on the other end side of the core metal 22 varies, but the rubber member 72 coated on both end sides of the rubber roll body 74 is cut off by a not-shown cutting unit. Therefore, the rubber member 72 in this portion is not used for the rubber roll 76.

  Further, the core metal supply mechanism 24 includes two pressing units 80 and 82, and the support mechanism 16 includes two support units 130 and 132. For this reason, compared with the case where at least one of the pressing unit and the support unit is provided, the cored bar 22 is efficiently fed to the rubber member 72 and the cored bar covered with the rubber member 72 is provided. The other end of 22 is supported efficiently.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments can be taken within the scope of the present invention. This will be apparent to those skilled in the art. For example, in the above embodiment, the cored bar supply mechanism 24 includes the two pressing units 80 and 82, but may be one or three or more. Similarly, the support mechanism 16 includes the two support units 130 and 132, but may be one or three or more.

  Moreover, in the said embodiment, although the press unit 80 and the press unit 82 are arrange | positioned on both sides of the center line C, the center line C does not need to be pinched | interposed.

  Moreover, in the said embodiment, although the support unit 130 and the support unit 132 are arrange | positioned on both sides of the centerline C, the centerline C does not need to be pinched | interposed.

  Although not particularly described in the above embodiment, for example, when the thickness of the rubber member 72 covered by the core metal 22 is changed along the longitudinal direction of the core metal 22, the core metal 22 is changed. What is necessary is just to change the moving speed gradually on the way.

DESCRIPTION OF SYMBOLS 10 Rubber roll manufacturing apparatus 12 Extrusion mechanism 16 Support mechanism 22 Core metal 22B 1st metal core 22C 2nd metal core 22D 3rd metal core 22E 4th metal core 24 Core metal supply mechanism (an example of sending mechanism)
72 rubber member 80 pressing unit (an example of a pressing member)
82 pressing unit (an example of a pressing member)
130 Support unit (an example of a support member)
132 Support unit (an example of a support member)

Claims (4)

An extrusion mechanism for extruding a rubber material as a cylindrical rubber member;
A feeding mechanism that feeds a cored bar from the other end of the cored bar to the rubber member pushed out by the extrusion mechanism while pressing one end of a cylindrical cored bar;
A support mechanism for supporting the other end of the metal core, one end of which is pressed by the delivery mechanism and covered with the rubber member;
A rubber roll manufacturing apparatus comprising: The delivery mechanism includes a plurality of pressing members that press one end of the cored bar, and after one pressing member presses one end of the one cored bar, the other pressing member is one end of the other cored bar. The cored bar is sequentially sent out to the rubber member by pressing
The support mechanism includes a plurality of support members that support the other end of the core metal, and after the one support member supports the other end of the one core metal, the other support member supports the other core metal. The rubber roll manufacturing apparatus according to claim 1, which sequentially supports the other end of each. A coating step of pressing one end of a cylindrical metal core, sending the metal core from the other end of the metal core to a rubber member extruded into a cylindrical shape, and covering the rubber member on the metal core;
One end is pressed and sent out from the other end to the rubber member, and a supporting step for supporting the other end of the core metal covered with the rubber member;
A rubber roll manufacturing method comprising: In the covering step, after one pressing member presses one end of the one core metal, the other pressing member presses one end of the other core metal and sequentially sends the core metal to the rubber member,
The rubber roll manufacturing method according to claim 3, wherein, in the supporting step, after one supporting member supports the other end of the one core metal, the other supporting member sequentially supports the other end of the other core metal. .

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