Mechanism for rotating parts of interlocking tool machines

Abstract

To provide a mechanism used for rotating parts of an interlocking tool machine that simplifies components and reduces the volume of the mechanism. [Solution] A mechanism 100 used for rotating parts of an interlocking tool machine includes a base 10, a rotating shaft that penetrates the base so as to be rotatable on the spot and has an interlocked part, an interlocking member 30 that has an interlocking part that fits with the interlocked part of the rotating shaft and interlocks with it, and a drive unit. The drive unit reciprocates the interlocking member, thereby controlling the rotating shaft to rotate in the forward and reverse directions within a predetermined rotation range.

Description

[Technical field]

[0001] The present invention relates to a tool machine, and more particularly to a mechanism used to rotate parts of an interlocking tool machine. [Background technology]

[0002] Conventional tool machines have complex configurations and interlocking relationships, and often require the manipulation and rotation of specific parts to achieve specific operations, such as an exchange arm of an automatic tool exchange mechanism, a tool extraction part, or an exchange turntable.

[0003] A known mechanism used to perform the above-mentioned rotational motion is a rotation mechanism including a rotating shaft, gears, and a rack. This rotation mechanism converts linear motion into rotational motion, thereby realizing the rotational operation of the part. There is also another rotation mechanism consisting of a rotating shaft, a link mechanism, and a cylinder, which can also realize the rotational operation of the part. However, these two types of rotation mechanisms have a common problem: the volume of the entire rotation mechanism is too large. In particular, when components are stacked, their height may be excessive, protruding and occupying space, which may interfere with the arrangement of other parts. It also brings inconvenience to the working environment and goes against the development trend of miniaturization of tools and machines. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, an object of the present invention is to provide a mechanism for use in rotating parts of an interlocking tool machine, which simplifies the components and reduces the volume of the mechanism.

[0005] In order to achieve the above-mentioned object, the present invention provides a mechanism for rotating parts of an interlocking tool machine, comprising: a base; a rotating shaft which penetrates the base so as to be rotatable on the spot and has an interlocked part arranged along a circumferential surface, one end of which is connected to the part; an interlocking member having an interlocking part which engages with and interlocks with the interlocked part of the rotating shaft; and a drive unit which has at least one transmission member connected to the interlocking member and controlled to move back and forth, and is configured to rotate the rotating shaft in a first rotation direction or a second rotation direction opposite to the first rotation direction via the interlocking member during the process of switching the reciprocating movement of the at least one transmission member.

[0006] The effect of the present invention is that the stacking height of the parts can be effectively controlled, thereby reducing the volume of the mechanism and making the arrangement of other parts more flexible. [Brief description of the drawings]

[0007] [Figure 1] 1 is a perspective view of a mechanism used to rotate parts of an interlocking tool machine according to a preferred embodiment of the present invention; FIG. [Diagram 2] An exploded view of the mechanism shown in Figure 1. [Diagram 3] 2 is a plan view of the mechanism shown in FIG. 1, illustrating how the chain rotates in a first rotation direction. [Figure 4] A partially enlarged view of Figure 3. [Diagram 5] Cross-sectional view along line 5-5 in Figure 3. [Figure 6] Cross-sectional view along line 6-6 of Figure 3. [Figure 7] 3, but showing the chain rotating in a second rotation direction. [Figure 8] Cross-sectional view along line 8-8 of Figure 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] In order to more clearly explain the present invention, a preferred embodiment will be described in detail below with the accompanying drawings. As shown in Fig. 1 and Fig. 2, a mechanism 100 used for rotating a part of an interlocking tool machine according to a preferred embodiment of the present invention includes a base 10, a rotating shaft 20, an interlocking member 30, and a driving unit 40. The part includes, but is not limited to, an exchange arm, a tool extracting member, or an exchange platen of an automatic tool exchange mechanism. In this embodiment, a tool exchange arm 200 is taken as an example of the part.

[0009] A mounting seat 11 is fixed to one side of the base 10, and the mounting seat 11 is separable from the base 10. An accommodation space S is formed between the base 10 and the mounting seat 11. Fixed plates 12 and 13 are fixed to the surface of the base 10, and these fixed plates are arranged parallel to each other with a gap between them. In addition, the base 10 and the mounting seat 11 each have a circular hole on the same imaginary axis L, and a bearing 14 and a bearing 15 are installed in the circular hole, respectively.

[0010] 3 to 6, the rotating shaft 20 is coupled to the base 10 so as to be rotatable at its original position. The rotating shaft 20 has an interlocking portion corresponding to the accommodation space S, which is provided along the circumferential surface of the rotating shaft 20. In this embodiment, the rotating shaft 20 includes an axial shaft 22 and a sprocket 24. The axial shaft 22 is cylindrical, and both ends of the axial shaft 22 pass through the bearings 14 and 15, respectively. The sprocket 24 is fixed to the axial shaft 22 and constitutes the interlocking portion. The sprocket 24 includes a plurality of sprocket teeth 24a provided along the circumferential surface of the axial shaft 22. The axial shaft 22 and the sprocket 24 may be manufactured by integral molding. The axial shaft 22 further fixes a support plate 26 via one end of the bearing 14, and the support plate 26 is used to fixedly connect the shaft seat 201 of the tool change arm 200. One end of the shaft seat 201 is further fixed to a clamp arm seat 202, and both ends of the clamp arm seat 202 are provided with tool clamps 202a for gripping a tool.

[0011] The interlocking member 30 is an elongated body having a first end 30a and a second end 30b. An interlocking portion is formed between the first end 30a and the second end 30b, and the interlocking portion engages with the interlocked portion of the rotating shaft 20 to interlock with it. In this embodiment, since the interlocked portion is the sprocket 24, the interlocking member 30 is a chain in which a plurality of connecting links 32 are connected to form an elongated body. Different ends of the chain respectively constitute the first end 30a and the second end 30b. These connecting links 32 constitute the interlocking portion, and the connecting links 32 can be engaged with the sprocket teeth 24a of the sprocket 24.

[0012] The driving unit 40 includes at least one transmission member, which is connected to the interlocking member 30 and controlled to reciprocate. The at least one transmission member rotates the rotary shaft 20 via the interlocking member 30 during switching of reciprocating motion. In this embodiment, the driving unit 40 includes a first cylinder 42 and a second cylinder 44. As shown in FIG. 3, the first cylinder 42 includes a first cylinder body 42a, a first transmission member 42b, and a first piston head 42c, and the second cylinder 44 includes a second cylinder body 44a, a second transmission member 44b, and a second piston head 44c. The first cylinder 42 and the second cylinder 44 are pneumatic cylinders, but may also be hydraulic cylinders.

[0013] The first cylinder body 42a and the second cylinder body 44a are fixed between the fixed plate 12 and the fixed plate 13 via two nuts 46, respectively (see FIG. 4). A part of the first cylinder body 42a protrudes to the outside of the fixed plate 12 and the nuts 46, and this protruding part is defined as a first stopper part 42d. Similarly, a part of the second cylinder body 44a also protrudes to the outside of the fixed plate 12 and the nuts 46, and this protruding part is defined as a second stopper part 44d.

[0014] The first transmission member 42b and the second transmission member 44b are both long rod-shaped members, and both ends of the members penetrate the first cylinder body 42a and the second cylinder body 44a, respectively. The first piston head 42c is connected to the first transmission member 42b and is disposed inside the first cylinder body 42a. Similarly, the second piston head 44c is connected to the second transmission member 44b and is disposed inside the second cylinder body 44a. When the intake and exhaust of the first cylinder 42 and the second cylinder 44 are adjusted and controlled, respectively, the first transmission member 42b and the second transmission member 44b perform linear motion. In addition, the first transmission member 42b and the second transmission member 44b move in opposite directions. The intake and exhaust control of the cylinder is a known technique, so a detailed description will be omitted.

[0015] One end of the first transmission member 42b is connected to the first end 30a of the interlocking member 30 via the first shaft end connection portion 42e. The other end of the first transmission member 42b is provided with a first abutment portion 43, which contacts the first stopper portion 42d to limit the movement of the first transmission member 42b. Similarly, one end of the second transmission member 44b is connected to the second end 30b of the interlocking member 30 via the second shaft end connection portion 44e, and the other end is provided with a second abutment portion 45, which contacts the second stopper portion 44d to limit the movement of the second transmission member 44b. As shown in FIG. 2, the first abutment portion 43 of this embodiment includes a nut 43a and a cushion pad 43b. The nut 43a is fastened to the threaded rod shaft 42f of the first transmission member 42b, and the cushion pad 43b is attached to the first transmission member 42b and disposed near the nut 43a. Similarly, the second abutment portion 45 includes a nut 45a and a cushion pad 45b, the nut 45a is fastened to the threaded rod shaft 44f of the second transmission member 44b, and the cushion pad 45b is attached to the second transmission member 44b and positioned near the nut 45a.

[0016] As is clear from the above description, when the first transmission member 42b is controlled to retreat toward the first cylinder body 42a by the combination of the base 10, the rotating shaft 20, the interlocking member 30, and the drive unit 40, the chain (the interlocking member 30) synchronously pulls the second transmission member 44b outward from the second cylinder body 44a and rotates the rotating shaft 20 in the first rotation direction R1, as shown in FIG. 3. When the cushion pad 45b comes into contact with the second stopper portion 44d, the rotation of the rotating shaft 20 stops. Conversely, when the second transmission member 44b is controlled to retreat toward the second cylinder body 44a, as shown in FIG. 7, the chain (the interlocking member 30) pulls the first transmission member 42b outward from the first cylinder body 42a and rotates the rotating shaft 20 in the second rotation direction R2. This second rotation direction R2 is opposite to the first rotation direction R1. Similarly, when the cushion pad 43b comes into contact with the first stopper portion 42d, the rotation of the rotating shaft 20 stops. This not only stably maintains the tension of the chain (i.e., the interlocking member 30), but also achieves the purpose of rotating the arm holder 202 of the tool change arm 200 and switching the tool position by switching the rotating shaft 20 between the first rotation direction R1 and the second rotation direction R2. From the above, in the mechanism 100 of this embodiment, the method in which the interlocking member 30 is combined with the sprocket 24 of the rotating shaft 20 in the form of a chain has the effect of simplifying the component structure and reducing the size of the entire mechanism, compared to a conventional rotating mechanism that rotates a component (e.g., a tool change arm) using a link mechanism.

[0017] The cushion pad 43b and the cushion pad 45b are made of a non-metallic material, and resin is the most suitable. This can reduce the sound when the nut 43a (nut 45a) hits the first stopper portion 42d (second stopper portion 44d). The nut 43a can be tightened or loosened on the threaded rod shaft 42f of the first transmission member 42b, and the nut 45a can be tightened or loosened on the threaded rod shaft 44f of the second transmission member 44b. This can adjust the distance between the first contact portion 43 (second contact portion 45) and the first stopper portion 42d (second stopper portion 44d) to change the rotation position of the rotating shaft 20. Note that both the first contact portion 43 and the second contact portion 45 have a position adjustment function, but in actual use, it is also possible to provide the position adjustment function to only one of the first contact portion 43 or the second contact portion 45.

[0018] In order to ensure the rotational position of the rotary shaft 20, a sensor device may be added to the mechanism of the present invention. This sensor device detects the moving position of at least one of the first transmission member 42b and the second transmission member 44b, and preferably detects the first transmission member 42b and the second transmission member 44b individually. To achieve this purpose, the sensor device of this embodiment includes a first sensor set and a second sensor set. The first sensor set includes two sensors 50A attached to the outside of the first cylinder body 42a of the first cylinder 42 with a gap therebetween. Similarly, the second sensor set includes two sensors 50B attached to the outside of the second cylinder body 44a of the second cylinder 44 with a gap therebetween. As shown in FIG. 8, these sensors 50A and 50B are reed switches, and a first magnet 52 is installed on the first piston head 42c in accordance with the sensing principle of the reed switch. The first magnet 52 moves between the two sensors 50A in accordance with the movement of the first transmission member 42b. When either sensor 50A detects the first magnet 52, it emits a position determination signal, which is used for subsequent control. Similarly, a second magnet (not shown in the drawings) is also provided in the second piston head 44c, and detects the movement position of the second transmission member 44b in combination with the sensor 50B.

[0019] What has been described above is merely a preferred possible embodiment of the present invention, and any equivalent substitutions made by applying the scope of the utility model registration claims together with the specification of the present invention should be included in the scope of the utility model registration claims of the present invention. [Explanation of symbols]

[0020] 100: Mechanism 10: Bass 11: Mounting base 12: Fixed plate 13: Fixed plate 14: Bearings 15: Bearings 20: Rotation axis 22: Axle shaft 24: Sprocket 24a: sprocket teeth 26: Support plate 30: Interlocking parts 30a: 1st end 30b: 2nd end 32: Link 40: Drive unit 42: First cylinder 42a: First cylinder body 42b: First transmission member 42c: First piston head 42d: First stopper part 42e: First shaft end connection 42f: Threaded rod shaft 43:First contact part 43a: Nut 43b: Cushion pad 44: 2nd cylinder 44a: 2nd cylinder body 44b: Second transmission member 44c: 2nd piston head 44d: Second stopper part 44e: Second shaft end connection 44f: Threaded rod shaft 45:Second contact part 45a: Nut 45b: Cushion pad 46: Nut 50A, 50B: Sensor 52: First magnet L: Axis line R1: First rotation direction R2: Second rotation direction S: Storage space 200: Tool change arm 201: Shaft seat 202: Clamp arm seat 202a: Tool clamp

Claims

1. In a mechanism used for rotating parts of an interlocking tool machine, With the base, A rotation shaft having an interlocking part that penetrates the base so as to be rotatable on the spot and is arranged along a circumferential surface, and one end of the rotation shaft is connected to the part; an interlocking member having an interlocking portion that engages with the interlocked portion of the rotating shaft to interlock with the interlocked portion; a drive unit including at least one transmission member connected to the interlocking member and controlled to reciprocate, the drive unit being configured to rotate the rotation shaft in a first rotation direction or a second rotation direction opposite to the first rotation direction via the interlocking member during a process in which the at least one transmission member switches between reciprocating movements; A mechanism used to rotate parts of an interlocking tool machine including a

2. the interlocking member is an elongated body having a first end and a second end, and the interlocking portion is located between the first end and the second end, the drive unit includes a first cylinder having a first transmission member connected to the first end of the interlocking member, and a second cylinder having a second transmission member connected to the second end of the interlocking member; The first transmission member can be moved in and out of the body of the first cylinder, the second transmission member can be moved in and out of the body of the second cylinder, and the movement of the first transmission member and the movement of the second transmission member are reversed to each other.

2. A mechanism for use in rotating parts of an interlocking tool machine according to claim 1.

3. The body of the first cylinder has a first stopper portion, The body of the second cylinder has a second stopper portion, the first transmission member is a long rod-shaped body having both ends penetrating the main body of the first cylinder, one end of the first transmission member is connected to the first end of the interlocking member, and the other end is provided with a first abutment portion; the second transmission member is a long rod-shaped body having both ends penetrating the body of the second cylinder, one end of the second transmission member is connected to the second end of the interlocking member, and the other end is provided with a second abutment portion; The first contact portion is configured to contact the first stopper portion to limit the movement of the first transmission member, and the second contact portion is configured to contact the second stopper portion to limit the movement of the second transmission member.

3. A mechanism for use in rotating parts of an interlocking tool machine according to claim 2.

4. The mechanism for rotating parts of an interlocking tool machine as described in claim 3, characterized in that at least one of the first abutment portion and the second abutment portion is arranged to be movable relative to the first transmission member or the second transmission member to which it is respectively connected, so as to change the distance to the first stopper portion or the second stopper portion.

5. The first transmission member and / or the second transmission member have a threaded rod shaft, the first contact portion and / or the second contact portion have a nut and a cushion pad, the nut is screwed to the threaded rod shaft, and the cushion pad is provided between the nut and the first stopper portion and / or the second stopper portion.

5. A mechanism for use in rotating parts of an interlocking tool machine according to claim 4.

6. 3. The mechanism for rotating parts of an interlocking tool machine according to claim 2, further comprising a sensor device for detecting a moving position of at least one of the first transmission member and the second transmission member.

7. the sensor device includes a first sensor set and a second sensor set; the first sensor set and the second sensor set each include two sensors disposed on the first cylinder and the second cylinder, respectively; The two sensors of the first sensor set detect a moving position of the first transmission member, The two sensors of the second sensor set detect the moving position of the second transmission member.

7. A mechanism for use in rotating parts of an interlocking tool machine according to claim 6.

8. Each sensor of the sensor device is a reed switch disposed outside the body of the first cylinder and the body of the second cylinder, a first magnet is provided in the first cylinder body and moves between the two reed switches as the first transmission member moves; The second transmission member is provided with a second magnet that is disposed in the second cylinder body and moves between the two reed switches as the second transmission member moves.

8. A mechanism for use in rotating parts of an interlocking tool machine according to claim 7.

9. The rotating shaft includes an axle shaft that rotatably passes through the base, and a sprocket that is fixedly connected to the axle shaft and that constitutes the interlocked portion, The sprocket has a plurality of sprocket teeth formed along a circumferential surface of the axial shaft; The interlocking member includes a chain having a plurality of connecting links, and the connecting links form the interlocking portion.

3. A mechanism for use in rotating parts of an interlocking tool machine according to claim 1 or 2.

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