CN117601066A - Rotation method and rotation tool - Google Patents

Abstract

The invention relates to a rotation method and a rotation tool, which can improve the rotation force of the rotation tool. The rotation method includes a rotation step of rotating the rotation target using a rotation tool. The rotary tool is provided with: a rotation part which rotates in engagement with the outer periphery of the rotation object; a 1 st shank protruding radially outward from the rotating portion; and a 2 nd handle protruding radially outward from the rotating portion. The 1 st handle and the 2 nd handle are arranged at intervals in the rotation direction of the rotation part. The rotation procedure comprises the following steps: a step 1 of applying a force in a vertical direction upward, a vertical direction downward, or a horizontal direction to the 1 st handle in a state in which the rotating portion is engaged with the rotation object, thereby applying a force for rotating the rotating portion in the 1 st direction; and a step 2 of rotating the rotating unit in the 1 st direction by applying a force in a direction different from that of the 1 st handle and in a vertical direction downward, a vertical direction upward or a horizontal direction to the 2 nd handle in a state in which the rotating unit is engaged with the rotating object.

Description

Rotation method and rotation tool

Technical Field

The present application claims priority based on japanese patent application No. 2022-131747 filed on 22 th 8 of 2022. The entire contents of this japanese application are incorporated by reference into the present specification.

The invention relates to a rotation method and a rotation tool.

Background

Patent document 1 describes the use of a striking wrench when screwing or unscrewing a bolt and a nut. The worker screws in or unscrews the bolt and the nut by striking the shank of the striking wrench with a hammer.

Patent document 1: japanese patent laid-open publication No. 2014-108488

The rotary tool has: a rotating portion which engages with an outer periphery of the rotating object; and a handle protruding radially outward from the rotating portion. The rotation object can be rotated by applying a force to the lever to rotate the rotating portion.

Conventionally, the number of handles is 1. Therefore, the direction and method of applying force are limited, and there are cases where the rotational force applied to the rotating object is insufficient. Alternatively, there are problems such as an increase in rotational force applied by a hammer, for example, an increase in instantaneous force, an increase in vibration, and an increase in risk of damage to parts or failure of knocking.

Disclosure of Invention

One embodiment of the present invention provides a technique for increasing the rotational force of a rotary tool or reducing the rotational force applied with a hammer.

The rotation method according to one embodiment of the present invention includes a rotation step of rotating the rotation target object using a rotation tool. The rotating tool is provided with: a rotation unit that rotates in engagement with the outer periphery of the rotation target; a 1 st shank protruding radially outward from the rotating portion; and a 2 nd handle protruding radially outward from the rotating portion. The 1 st handle and the 2 nd handle are provided with a gap therebetween in a rotation direction of the rotation portion. The rotation process includes: a 1 st step of applying a force in a vertical direction upward, a vertical direction downward, or a horizontal direction to the 1 st handle in a state in which the rotating portion is engaged with the rotating object, thereby applying a force to rotate the rotating portion in the 1 st direction; and a 2 nd step of rotating the rotating unit in the 1 st direction by applying a force in a direction different from that of the 1 st handle to the 2 nd handle and a force in a vertical direction downward, a vertical direction upward, or a horizontal direction in a state in which the rotating unit is engaged with the rotating object.

ADVANTAGEOUS EFFECTS OF INVENTION

According to one aspect of the present invention, the rotational force of the rotary tool can be increased or the rotational force applied with the hammer can be reduced.

Drawings

Fig. 1 is a diagram showing a rotary tool according to an embodiment.

Fig. 2 is a diagram showing a rotary tool according to modification 1.

Fig. 3 is a diagram showing a rotary tool according to modification 2.

Fig. 4 is a diagram showing a rotary tool according to modification 3.

Fig. 5 is a cross-sectional view showing an example of an injection molding machine.

Fig. 6 is a plan view showing an example of an injection molding machine.

Fig. 7 is a plan view showing an example of a process of retreating the nozzle of fig. 6.

Fig. 8 is a diagram showing an example of a process of rotating the nozzle of fig. 7 with a rotating tool.

Fig. 9 is a diagram showing an example of a process of extracting a screw from a cylinder.

Description of symbols

10-rotating tool, 20-rotating part, 30-1 st handle, 40-2 nd handle, 90-rotating object.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding structures are denoted by the same reference numerals, and description thereof may be omitted.

A rotary tool 10 according to an embodiment will be described with reference to fig. 1. The turning tool 10 is used to turn the turning target 90. The rotation target 90 rotates about a horizontal rotation center line. The rotation target 90 has a screw thread, and the screw thread is screwed into a screw hole of the fixture 95. In addition, the arrangement of the screw thread and the screw hole may be reversed. The rotation object 90 may have a screw hole, and the fixture 95 may have a screw.

The screw thread may be any one of a positive screw thread screwed by turning clockwise and a negative screw thread screwed by turning counterclockwise. The rotary tool 10 is used for at least one of screwing in and unscrewing the threads, but may be used for both. The turning tool 10 for screwing in the thread and the turning tool 10 for unscrewing the thread may be prepared separately.

The rotation target 90 has an outer periphery 91 having a shape that engages with the rotation tool 10. The shape of the outer periphery 91 is, for example, a polygon, preferably a regular polygon. If the outer periphery 91 is rotationally symmetrical about the rotation center line, it is easy to adjust the 1 st and 2 nd handles 30, 40 described later to a desired orientation when the rotary tool 10 is engaged with the rotation target object 90.

However, the outer periphery 91 of the rotation target 90 may be in a shape that engages with the rotation tool 10. Although not shown, for example, the outer periphery 91 of the rotation target object 90 may have a shape in which a concave portion or a convex portion is provided at a part of the circumference, for example, a gear shape. The concave or convex portions are preferably provided in plurality at equal intervals along the circumference.

The rotary tool 10 includes: a rotating unit 20 that engages with an outer periphery 91 of the rotating object 90; a 1 st shank 30 protruding radially outward from the rotating portion 20; and a 2 nd shank 40 protruding radially outward from the rotating portion 20. The 1 st and 2 nd handles 30 and 40 are integrated with the rotating portion 20. By applying a force to the 1 st handle 30 and the 2 nd handle 40, the rotation object 90 rotates together with the rotation portion 20.

The rotating portion 20 is engaged with the outer periphery 91 of the rotating object 90. For example, the rotating portion 20 is annular and has a hole 21. The shape of the hole 21 is, for example, polygonal. The number of corners of the hole 21 is n times (n is an integer of 1 or more) the number of corners of the outer periphery 91 of the rotation object 90. In fig. 1 n is 2. The hole 21 preferably has a rotationally symmetrical shape centered on the rotation center line.

As described above, the rotating portion 20 has an annular shape. Thus, when the rotating unit 20 is rotated, the rotating unit 20 can be prevented from being separated from the rotation object 90 in a direction orthogonal to the rotation center line. The rotating portion 20 may not have an annular shape as long as it engages with the outer periphery 91 of the rotating object 90. For example, the rotating portion 20 may have a C-shape.

The 1 st handle 30 and the 2 nd handle 40 are provided with a gap therebetween in the rotational direction of the rotational portion 20. The 1 st shank 30 and the 2 nd shank 40 are disposed at equal intervals (here, intervals of 180 °) in the rotational direction of the rotating portion 20 so as to suppress radial runout of the rotating portion 20 due to deviation of torque. In addition, the 1 st shank 30 and the 2 nd shank 40 may be disposed at unequal intervals in the rotational direction of the rotating portion 20 within a range where there is no problem of radial runout.

The force applied to the 1 st shank 30 has a 1 st component orthogonal to the longitudinal direction (left-right direction in fig. 1) of the 1 st shank 30. The 1 st component contributes to the torque. The force applied to the 1 st shank 30 preferably does not have a 2 nd component along the length of the 1 st shank 30. The 2 nd component does not contribute to torque, and is therefore wasteful, and may cause radial runout of the rotating section 20.

When the force applied to the 1 st handle 30 has only the vertical component and does not have the horizontal component, the 1 st handle 30 is preferably horizontally arranged in a state where the rotating portion 20 is engaged with the rotating object 90. The force applied to the 1 st shank 30 can be used entirely for the torque. Further, radial runout of the rotating section 20 can be suppressed.

Similarly, the force applied to the 2 nd shank 40 preferably has only a component perpendicular to the longitudinal direction (left-right direction in fig. 1) of the 2 nd shank 40. When the 2 nd handle 40 is struck directly downward by a hammer, the 2 nd handle 40 is preferably disposed horizontally in a state where the rotating portion 20 is engaged with the rotating object 90. The force applied to the 2 nd handle 40 can be used entirely for the torque. Further, radial runout of the rotating section 20 can be suppressed. The 1 st handle 30 mechanically applied with force and the 2 nd handle 40 struck with a hammer are preferably disposed at intervals of 120 ° to 240 ° in the rotational direction of the rotating portion 20.

The 1 st handle 30 applies a force to rotate the rotating portion 20 in the 1 st direction (counterclockwise in fig. 1) by applying a force in the vertical direction upward, the vertical direction downward, or the horizontal direction (a force in the vertical direction upward in fig. 1). The 2 nd handle 40 applies a force in a direction different from that of the 1 st handle 30 and a force in a vertical direction downward, a force in a vertical direction upward, or a force in a horizontal direction (a force in a vertical direction downward in fig. 1), thereby applying a force for rotating the rotating portion 20 in the 1 st direction.

In the present specification, a force having a vertical component greater than a horizontal component when the force is decomposed into the vertical component and the horizontal component is referred to as a force in the vertical direction. The force having the upward vertical component among the forces in the vertical direction is referred to as the force having the upward vertical component among the forces in the vertical direction, and the force having the downward vertical component among the forces in the vertical direction is referred to as the force having the downward vertical component.

In the present specification, a force having a horizontal component larger than a vertical component when the force is decomposed into the vertical component and the horizontal component is referred to as a horizontal force. Among the horizontal forces, a force of a component in the horizontal direction to the left when the component in the horizontal direction is opposite to the rotating portion 20 is referred to as a force in the horizontal direction to the left, and a force of a component in the horizontal direction to the right when the component in the horizontal direction is opposite to the rotating portion 20 is referred to as a force in the horizontal direction to the right.

The force is classified into any one of 4 forces, i.e., a force in the vertical direction, a force in the horizontal direction to the left, and a force in the horizontal direction to the right. The different directional forces are, for example, a combination of any one of the 4 forces (for example, a force directed upward in the vertical direction) and any one of the remaining 3 forces (for example, a force directed downward in the vertical direction, a force directed leftward in the horizontal direction, and a force directed rightward in the horizontal direction).

According to the present embodiment, a force is applied to both the 1 st handle 30 and the 2 nd handle 40 to rotate the rotating portion 20 in the 1 st direction. The rotational force can be improved by rotating the rotating portion 20 in the 1 st direction by the resultant force of the plurality of forces. Further, the turning portion 20 can be turned in the 1 st direction by a plurality of mechanisms, and the turning force can be improved. The 1 st direction may be any one of a direction in which the screw is screwed and a direction in which the screw is loosened.

Further, according to the present embodiment, a plurality of mechanisms can be distributed around the rotation object 90, and operability can be improved. The plurality of mechanisms is, for example, a combination of a worker and a machine. The workers and the machines can be distributed and arranged, and the operability can be improved. And, the rotational force applied by the worker with the hammer can be reduced. In addition, a plurality of workers may be disposed without disposing the machine, or a plurality of machines may be disposed without disposing the workers.

Further, according to the present embodiment, the direction of the force applied to the 1 st shank 30 is different from the direction of the force applied to the 2 nd shank 40. A plurality of mechanisms with different directions of the applied force can be used to increase the rotational force. For example, the crane 96 and jack generate a force in the vertical direction. The counterweight generates a downward force in the vertical direction, but the direction of the force can be changed by the sheave. The winch generates a force in the horizontal direction, but the direction of the force can be changed by the pulley. The human force can generate force in any direction. However, the hammer preferably falls from top to bottom without counteracting gravity. Thus, the force of the hammer stroke is suitable for generating a force vertically downward.

The combination of forces applied to the 1 st and 2 nd handles 30, 40 can be appropriately selected. For example, a mechanical or weighted force (mechanical force in fig. 1) can be applied to the 1 st shank 30, and a human force can be applied to the 2 nd shank 40. The machine means a workpiece that performs a motion in which 2 or more resistive objects are combined with each other. The resistive material refers to a material that moves while being constrained from each other. The machine includes, for example, a crane 96, jack, or winch.

The crane 96 is, for example, a bridge crane, and lifts the 1 st handle 30. The jack is disposed below the 1 st handle 30 to jack up the 1 st handle 30. The winch pulls the 1 st handle 30 in a predetermined direction via a cable or rope. The weight pulls the 1 st handle 30 in a predetermined direction via a cable or rope, similarly to a winch.

The machine includes a machine that is operated by manpower. The jack may be any one of a jack operated by a human force and a jack operated by an electric force. The same is true of the winch. The winch is a mechanism that amplifies the rotational force of a manual handle or a motor with a decelerator, then transmits the amplified rotational force to a rotary drum, and winds a cable or rope around the rotary drum.

The winch and the counterweight can adjust the direction in which the 1 st handle 30 is pulled by changing the orientation of the cable or rope using the pulley. The winch and the counterweight can pull the 1 st handle 30 upward in the vertical direction, or can pull the 1 st handle 30 downward in the vertical direction. In addition, the winch and the counterweight are also capable of pulling the handle in a horizontal direction.

As shown in fig. 1, the 1 st shank 30 may have a transmission portion that transmits a mechanical or weighted force to the 1 st shank 30. The transfer portion includes, for example, an aperture 31 through which a cable 98 passes. The cable 98 is hung on the hook 97 of the crane 96, but may be pulled using a winch or a counterweight. In any event, a rope may be used in place of cable 98.

The hole 31 is provided in the side of the 1 st shank 30. The hole 31 is formed through the 1 st shank 30 in parallel with the rotation center line of the rotation portion 20. A hook, not shown, may be provided on the upper surface of the 1 st shank 30 instead of the hole 31. If the hooks are provided, the strength can be prevented from being lowered by the formation of the holes 31, and the durability of the 1 st shank 30 can be improved.

The 1 st shank 30 may have a plurality of transmission portions for transmitting mechanical or weight force to the 1 st shank 30 at intervals in the longitudinal direction of the 1 st shank 30. For example, a plurality of holes 31 are provided at intervals in the longitudinal direction of the 1 st shank 30. Thus, the transmission path of the mechanical or counterweight force can be selected so as not to interfere with the peripheral member. For example, the hole 31 through which the cable 98 passes can be selected so that the crane 96 does not interfere with the peripheral components.

The 1 st and 2 nd handles 30 and 40 may be the same length or may be different lengths, but the 1 st and 2 nd handles 30 and 40 may be different lengths in consideration of interference with peripheral members. In the present embodiment, the 1 st shank 30 is longer than the 2 nd shank 40. The mechanism that applies the force to the handle is appropriately selected depending on the length of the handle.

Preferably, mechanical or counter-weight force is applied to the long 1 st shank 30 and manual force is applied to the short 2 nd shank 40. The machine includes a crane 96, jack, or winch. The human force includes a force pushed by a hand, a force pulled by a hand, or a force struck with a hammer. The mechanical or weight force can be generated stably for a long period of time as compared with the manual force.

The momentary force (e.g., the force of a hammer strike) produces an impact, and thus the momentary load applied to the handle is greater. Further, the longer the length of the shank, the lower the durability of the shank. By applying a steady force to the long 1 st shank 30 and an instantaneous force to the short 2 nd shank 40, breakage of the 1 st shank 30 and the 2 nd shank 40 can be prevented.

The force of the machine or counterweight is greater than human. The larger the force, and the longer the distance of the point of action of the force from the rotation center line, the larger the rotational force (torque). By applying a large but stable mechanical force to the long 1 st shank 30 and applying a force pushed or pulled by a small man power to the short 2 nd shank 40, a stable rotational force from which an instantaneous force is removed can be improved.

As shown in fig. 2, an extension shaft 41 may be detachably mounted on the short 2 nd shank 40. The extension shaft 41 protrudes radially outward from the 2 nd shank 40, and the extension shaft 41 can substantially extend the shank length, thereby increasing the rotational force. The extension shaft 41 includes, for example, a tube. The extension shaft 41 is detachably provided as the case may be, to avoid interference with the peripheral member.

Next, a method of rotation using the above-described rotary tool 10 will be described. The rotation method includes a rotation step of rotating the rotation target 90 using the rotation tool 10. The rotation procedure comprises the following steps: in a state where the rotating portion 20 of the rotary tool 10 is engaged with the rotation target object 90, a force for rotating the rotating portion 20 in the 1 st direction is applied to the 1 st handle 30 and the 2 nd handle 40. The rotation process includes a 1 st process and a 2 nd process. In step 1, a force is applied to the 1 st handle 30 in the vertical direction, the downward direction, or the horizontal direction, thereby rotating the rotating portion 20 in the 1 st direction. In step 2, the turning portion 20 is turned in the 1 st direction by applying a force in a direction different from that of the 1 st handle 30 to the 2 nd handle 40 and a force in a vertical direction downward, a vertical direction upward, or a horizontal direction.

Next, a rotary tool 10 according to modification 2 will be described with reference to fig. 3. The following mainly describes differences from the above embodiment and the above modification 1. The rotary tool 10 includes a 3 rd shank 50 in addition to the rotary part 20, the 1 st shank 30, and the 2 nd shank 40. The 3 rd shank 50 protrudes radially outward from the rotating portion 20, similarly to the 1 st shank 30 and the 2 nd shank 40.

The 1 st handle 30, the 2 nd handle 40 and the 3 rd handle 50 are provided in this order with an interval in the rotational direction of the rotating portion 20. The 1 st, 2 nd and 3 rd shanks 30, 40 and 50 are disposed at equal intervals (here, intervals of 120 °) in the rotational direction of the rotating portion 20 so as to suppress radial runout of the rotating portion 20 due to deviation of torque. In addition, the 1 st, 2 nd and 3 rd shanks 30, 40 and 50 may be disposed at unequal intervals in the rotational direction of the rotating portion 20 within a range where there is no problem of radial runout.

As described above, the 1 st shank 30 and the 2 nd shank 40 struck with a hammer by mechanically applying force are preferably disposed at intervals of 120 ° to 240 ° in the rotational direction of the rotating portion 20. Further, the 3 rd shank 50, which is supposed to be pushed or pulled manually, is preferably not on the extension line of the direction in which the 2 nd shank 40 is struck with a hammer. Therefore, the 2 nd and 3 rd handles 40 and 50 are preferably provided at intervals of 120 ° or more in the rotational direction of the rotating portion 20.

The 1 st handle 30 applies a force in the vertical direction, thereby applying a force to rotate the rotating portion 20 in the 1 st direction (counterclockwise in fig. 3). The 2 nd handle 40 applies a force to rotate the rotating portion 20 in the 1 st direction by applying a force in the vertical direction downward (a force in the vertical direction obliquely downward in fig. 3). The 3 rd handle 50 applies a force in the horizontal direction, thereby applying a force to rotate the rotating portion 20 in the 1 st direction.

In a state where the rotating portion 20 is engaged with the rotating object 90, the 3 rd shank 50 protrudes from the rotating portion 20 directly downward. At this time, the 3 rd shank 50 may be shorter than the 1 st shank 30 and the 2 nd shank 40 to prevent interference with the floor or peripheral components of the building. In the case where there is no peripheral component right under the rotating portion 20, and the distance between the rotating portion 20 and the floor of the building is sufficiently long, as shown by a broken line in fig. 3, the extension shaft 51 may be detachably mounted to the 3 rd handle 50.

The extension shaft 51 protrudes radially outward from the 3 rd shank 50, and the extension shaft 51 can substantially extend the shank length, thereby increasing the rotational force. The extension shaft 51 includes, for example, a tube. The extension shaft 51 is detachably provided according to circumstances to avoid interference with the floor or peripheral components of the building.

According to this modification, a force is applied to the 1 st, 2 nd, and 3 rd handles 30, 40, and 50 to rotate the rotating portion 20 in the 1 st direction. By increasing the number of handles, the rotational force can be further increased. The 1 st direction may be any one of a direction in which the screw is screwed and a direction in which the screw is loosened. Further, according to this modification, the operability can be further improved by increasing the number of handles. Further, according to the present modification, the direction of force applied to the 1 st shank 30, the direction of force applied to the 2 nd shank 40, and the direction of force applied to the 3 rd shank 50 are different. A plurality of mechanisms with different directions of the applied force can be used to increase the rotational force.

Next, a rotary tool 10 according to modification 3 will be described with reference to fig. 4. The following mainly describes differences from the above-described embodiment, the 1 st modification and the 2 nd modification. The rotary tool 10 includes a 4 th handle 60 in addition to the rotary part 20, the 1 st handle 30, the 2 nd handle 40, and the 3 rd handle 50. The 4 th handle 60 protrudes radially outward from the rotating portion 20, as in the 1 st handle 30, the 2 nd handle 40, and the 3 rd handle 50.

The 1 st, 2 nd, 3 rd, 50, and 4 th handles 30, 40 are provided in this order with a gap therebetween in the rotational direction of the rotating portion 20. The 1 st, 2 nd, 3 rd and 4 th shanks 30, 40, 50 and 60 are disposed at equal intervals (here, at intervals of 90 °) in the rotational direction of the rotating portion 20 so as to suppress radial runout of the rotating portion 20 due to deviation of torque. In addition, the 1 st, 2 nd, 3 rd, and 4 th shanks 30, 40, 50, and 60 may be disposed at unequal intervals in the rotational direction of the rotating portion 20 within a range where there is no problem of radial runout.

The 1 st handle 30 applies a force in the vertical direction, thereby applying a force to rotate the rotating portion 20 in the 1 st direction (counterclockwise in fig. 4). The 2 nd handle 40 applies a force in the horizontal direction, thereby applying a force to rotate the rotating portion 20 in the 1 st direction. The 3 rd handle 50 applies a force to rotate the rotating portion 20 in the 1 st direction by applying a force in the vertical direction downward. The 4 th handle 60 applies a force in a horizontal direction opposite to the 2 nd handle 40, thereby applying a force to rotate the rotating portion 20 in the 1 st direction.

In a state where the rotating portion 20 is engaged with the rotating object 90, the 2 nd handle 40 protrudes directly above the rotating portion 20, and the 4 th handle 60 protrudes directly below the rotating portion 20. At this time, the 2 nd and 4 th handles 40 and 60 may be shorter than the 1 st and 3 rd handles 30 and 50 to prevent interference with the floor or peripheral components of the building.

In the case where there is no peripheral member directly below the rotating portion 20, and the distance between the rotating portion 20 and the floor of the building is sufficiently long, the extension shaft 61 may be detachably attached to the 4 th handle 60. The extension shaft 61 protrudes radially outward from the 4 th handle 60, and the extension shaft 61 can substantially extend the length of the handle, thereby increasing the rotational force. The extension shaft 61 includes, for example, a tube. The extension shaft 61 is detachably provided according to circumstances to avoid interference with the floor or peripheral components of the building.

According to this modification, a force is applied to the 1 st, 2 nd, 3 rd, and 4 th handles 30, 40, 50, and 60 to rotate the rotating portion 20 in the 1 st direction. By increasing the number of handles, the rotational force can be further increased. The 1 st direction may be any one of a direction in which the screw is screwed and a direction in which the screw is loosened. Further, according to this modification, the operability can be further improved by increasing the number of handles. Further, according to the present modification, the direction of force applied to the 1 st shank 30, the direction of force applied to the 2 nd shank 40, the direction of force applied to the 3 rd shank 50, and the direction of force applied to the 4 th shank 60 are different. A plurality of mechanisms with different directions of the applied force can be used to increase the rotational force.

Next, an example of the injection molding machine 100 will be described with reference to fig. 5 to 7. The nozzle 122 of the injection molding machine 100 is an example of the rotating object 90, and the cylinder 121 of the injection molding machine 100 is an example of the stationary object 95. The screw of the nozzle 122 is screwed into the screw hole of the cylinder 121. The rotation of the nozzle 122 is performed using the rotary tool 10. Before explaining the rotation of the nozzle 122 with reference to fig. 8, the injection molding machine 100 will be described with reference to fig. 5 to 7. In fig. 5 to 9, the X-axis direction and the Y-axis direction represent horizontal directions, and the Z-axis direction represents vertical directions.

The injection molding machine 100 includes: a mold clamping device 110 for opening and closing the mold device 190; an injection device 120 for injecting a molding material such as a resin into the mold device 190; a moving device 130 that advances and retracts the injection device 120 with respect to the mold device 190; and a frame 140 supporting the respective constituent elements of the injection molding machine 100.

The mold clamping device 110 performs mold closing, pressure increasing, mold clamping, pressure reducing, and mold opening of the mold device 190. The mold device 190 includes a fixed mold 191 and a movable mold 192. The mold clamping device 110 is, for example, horizontal, and the mold opening/closing direction is the horizontal direction (X-axis direction). The mold clamping device 110 includes a fixed platen 111 to which a fixed mold 191 is attached and a movable platen 112 to which a movable mold 192 is attached.

The fixed platen 111 is fixed to the frame 140. A stationary mold 191 is attached to a surface of the stationary platen 111 facing the movable platen 112. The movable platen 112 is disposed so as to be movable in the mold opening and closing direction with respect to the frame 140. The movable mold 192 is attached to a surface of the movable platen 112 facing the fixed platen 111.

The mold clamping device 110 advances and retreats the movable platen 112 with respect to the fixed platen 111 under the control of the control device, thereby closing, boosting, clamping, depressurizing, and opening the mold of the mold device 190. During the mold closing, a cavity space is formed between the movable mold 192 and the fixed mold 191, and the injection device 120 fills the cavity space with a liquid molding material. By curing the filled molding material, a molded article can be obtained.

The injection device 120 is provided on a slide base 141, and the slide base 141 is disposed so as to be movable relative to the frame 140. The injection device 120 is disposed so as to be movable in and out of the mold device 190. The injection device 120 is in contact with the mold device 190 to fill the cavity space within the mold device 190 with the molding material.

The injection device 120 includes, for example: a cylinder 121 for heating the molding material; a nozzle 122 provided at a front end portion of the cylinder 121; and an injection frame 123 to which the rear end portion of the cylinder 121 is mounted. The injection device 120 fills the mold device 190 with the molding material melted inside the cylinder 121 from the nozzle 122.

The moving means 130 advances and retreats the injection means 120 with respect to the mold means 190. And, the moving device 130 presses the nozzle 122 against the die device 190. The moving device 130 has, for example, a hydraulic cylinder 131. A plurality (for example, 2) of hydraulic cylinders 131 may be symmetrically arranged around nozzle 122.

The hydraulic cylinder 131 includes a cylinder tube 132 fixed to the injection frame 123 and a piston rod 133 protruding forward from the cylinder tube 132. A flange 135 is provided at the front end of the piston rod 133. The flange 135 is fastened to the fixed platen 111 by bolts or the like. A piston 134 is provided at the rear end of the piston rod 133. The piston 134 divides the interior of the cylinder tube 132 into a front chamber 132a and a rear chamber 132b.

By supplying oil to the front chamber 132a of the cylinder 132, the injection device 120 is pushed forward. The injection device 120 is advanced, and the nozzle 122 is brought into the through hole 111a of the fixed platen 111 and is press-fitted to the fixed mold 191 (refer to fig. 6). On the other hand, by supplying oil to the rear chamber 132b of the cylinder 132, the injection device 120 is pushed rearward. The injection device 120 is retracted, the nozzle 122 is separated from the fixed mold 191, and is pulled out from the through hole 111a of the fixed platen 111 (see fig. 7).

Next, an example of rotation of the nozzle 122 using the rotary tool 10 will be described with reference to fig. 8. As shown in fig. 8, the rotation of the nozzle 122 is performed in the following state: the nozzle 122 is retracted relative to the fixed platen 111, and the flange 135 is removed from the fixed platen 111, such that the flange 135 is retracted relative to the nozzle 122.

The operator hangs the rotary part 20 of the rotary tool 10 on the root of the nozzle 122, and applies a force to the 1 st and 2 nd handles 30 and 40 in a state where the rotary part 20 is engaged with the nozzle 122. The direction of the force applied is the direction in which the nozzle 122 is released, but may be the direction in which the nozzle 122 is screwed in. The configuration of the 1 st and 2 nd handles 30, 40 may be reversed when the nozzle 122 is loosened and the nozzle 122 is screwed in.

The nozzle 122 is mounted to the front end of the cylinder 121. The rear end of the cylinder 121 is mounted to the injection frame 123. The cylinder 121 is cantilever-supported by the injection frame 123. Therefore, it is important to suppress radial runout of the nozzle 122 so as not to apply bending stress to the cylinder 121 due to rotation of the nozzle 122. By using the rotary tool 10, radial runout of the nozzle 122 can be controlled as described above.

After the step of removing the nozzle 122 from the cylinder 121 (see fig. 8), the step of extracting the screw 124 from the cylinder 121 (see fig. 9) may be performed. In the step of extracting the screw 124, a bolt and a nut, not shown, for fixing the injection frame 123 to the slide base 141 are first removed, and the injection frame 123 is rotated. In this state, the screw 124 is pulled out from the cylinder 121.

The step of removing the nozzle 122 from the cylinder 121 is performed before rotating the injection frame 123, and is performed in a state where the injection frame 123 is fixed to the slide mount 141 (a state where the cylinder 121 is parallel to the mold opening/closing direction (X-axis direction) (refer to fig. 8). Thus, the nozzle 122 can be removed from the cylinder 121 in a state where the cylinder 121 is stabilized.

The rotation method and the rotation tool according to the present invention have been described above, but the present invention is not limited to the above embodiments and the like. Various changes, modifications, substitutions, additions, deletions and combinations can be made within the scope described in the claims. These matters are of course within the technical scope of the present invention.

Claims (10)

1. A rotation method includes a rotation step of rotating a rotation target object using a rotation tool, wherein,

the rotating tool is provided with: a rotation unit that rotates in combination with an outer side Zhou Nie of the rotation target; a 1 st shank protruding radially outward from the rotating portion; and a 2 nd shank protruding radially outward from the rotating portion, the 1 st shank and the 2 nd shank being provided with a gap therebetween in a rotation direction of the rotating portion,

the rotation process includes:

a 1 st step of applying a force in a vertical direction upward, a vertical direction downward, or a horizontal direction to the 1 st handle in a state in which the rotating portion is engaged with the rotating object, thereby applying a force to rotate the rotating portion in the 1 st direction; and

And a step 2 of rotating the rotating unit in the 1 st direction by applying a force in a direction different from that of the 1 st handle and in a vertical direction downward, a vertical direction upward, or a horizontal direction to the 2 nd handle in a state in which the rotating unit is engaged with the rotating object.

2. The method of claim 1, wherein,

in the step 1, a mechanical or weight force is applied to the 1 st shank,

in the step 2, a human force is applied to the handle 2.

3. The rotation method according to claim 2, wherein,

the 1 st handle is longer than the 2 nd handle.

4. A method of rotating according to claim 2 or 3, wherein,

in the step 2, the step 2 is performed by striking the step 2 handle with a hammer to apply a manual force to the step 2 handle.

5. A method of rotating according to claim 2 or 3, wherein,

the 1 st shank has a plurality of transmission portions at intervals in a longitudinal direction of the 1 st shank, the transmission portions transmitting a mechanical or counterweight force to the 1 st shank.

6. A rotation method according to any one of claim 1 to 3, wherein,

the rotating tool is provided with a 3 rd handle protruding radially outwards from the rotating part,

the 1 st handle, the 2 nd handle and the 3 rd handle are arranged in this order with intervals in the rotation direction of the rotation part,

the rotation process comprises the following steps: in a state where the rotating portion is engaged with the rotation object, a force for rotating the rotating portion in the 1 st direction is applied to the 1 st handle, the 2 nd handle, and the 3 rd handle.

7. A rotation method according to any one of claim 1 to 3, wherein,

the rotating object is a nozzle of an injection molding machine.

8. A rotary tool for rotating an object to be rotated, comprising:

a rotating portion that engages with an outer periphery of the rotating object; a 1 st shank protruding radially outward from the rotating portion; and a 2 nd handle protruding radially outward from the rotating portion,

the 1 st handle and the 2 nd handle are arranged at intervals of 120-240 degrees in the rotation direction of the rotation part.

9. The rotary tool of claim 8, wherein,

comprises a 3 rd handle protruding radially outward from the rotating part,

the 1 st handle, the 2 nd handle and the 3 rd handle are arranged in this order with intervals in the rotation direction of the rotation part,

the 2 nd and 3 rd handles are provided at an interval of 120 ° or more in a rotation direction of the rotating portion.

10. The rotary tool of claim 8 or 9, wherein,

the 1 st handle is longer than the 2 nd handle.