JPH056016Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a vise device in a cutting machine such as a band saw.

[Technical background of the invention and its problems] Conventionally, there is a vise device equipped with a fixed vise jaw and a movable vice jaw facing each other, with a structure in which the fixed vice jaw is provided so that it can be slightly retracted from the material clamping position. . A prior example of this type of vice device is, for example, the device described in Japanese Utility Model Publication No. 57-46093. In the vise device described in the previous example, the cylinder for slightly advancing and retracting the stationary vise yaw is relatively large and exposed, making it difficult to make the overall configuration of the stationary vise yaw compact and requiring protection of the cylinder. , there is a problem with improving safety.

[Purpose of the invention] This invention was made in view of the above-mentioned problems, and aims to provide a vise device that can easily downsize the fixed vise and protect the cylinder and improve safety. It is something.

[Structure of the invention] In order to achieve the above object, this invention provides a fixed vise jaw on one side of the vise base, and a movable vice jaw that faces the fixed vice jaw and clamps the material. On the other side of
A vice device is provided so as to be reciprocally movable toward and away from a stationary vise jaw, and the stationary vise jaw can be slightly retracted from a material clamping position. In the space surrounded by the reinforcing stays on both sides and the cover parts of both reinforcing stays provided between both sides of the guided part of the fixed vise jaw guided by the vise guide provided on the vise base. A small arranged cylinder is fixed to the vise guide, and a piston rod provided in the cylinder is connected to the fixed vise guide,
An elastic body is provided between a portion of the fixed vise jaw and the cylinder, and biases the fixed vice jaw in a direction to bring the fixed vice jaw into an unclamped state.

[Embodiment of the invention] Figures 1 to 3 show the entirety of a band saw machine 1 as a cutting machine, which feeds and cuts material in fixed size increments. This band saw machine 1 is composed of a cutting section 3 for cutting the material, a support section 5 for placing and supporting the material, and a vice mechanism section 7 for clamping and fixing the material and feeding the material to a fixed size. ing.

The cutting section 3 has a band saw blade 9 and a saw blade housing 11, and a pair of wheels for rotatably suspending the band saw blade 9 are installed inside the saw blade housing 11. Further, the support portion 5 includes support rollers 13, 13, . . . for placing and supporting materials, and a frame 15 for supporting the support rollers 13, 13, .
and a table 17.

The material is fed in fixed size increments over the support section 5 and is clamped and fixed by the vice mechanism section 7, but the support rollers 13, 13, . . . Several are placed.

The vice mechanism section 7 includes a main body vice mechanism 19 and a material feeding vice mechanism 21. The main body vice mechanism 19 is composed of a main body fixed vice jaw 23 and a main body movable vice jaw 25 that can freely move back and forth in directions toward and away from the fixed vice jaw 23, and is provided at a position immediately before the cutting position where the band saw blade 9 performs. . The material feeding vice mechanism 21 has a material feeding fixed vice jaw 2 similar to the main body vice mechanism 19.
7. Consisting of a material feeding movable vise 29,
The material feeding vice mechanism 21 is configured to be able to move toward and away from the main body vice mechanism 19.

Further, a front vice mechanism 31 is provided at the front position of the cutting section 3, and this front vice mechanism 31
The front fixed vise jaw 33 and the front movable vice jaw 35 are also constructed.

The material feeding vice mechanism 21 is capable of reciprocating in the material feeding direction by rotation of a feed screw 37 installed on the side of the frame 15 along the material feeding direction. Further, the front vice mechanism 31 can also be moved back and forth in the material feeding direction by a feed screw 39.

The operation of the band saw machine 1 having the above configuration will be explained next. The material is placed on the support rollers 13, 13, . In this state, the feed screw mechanism 21 is advanced by a predetermined distance by rotation of the feed screw 37. As a result, the material is fed to a fixed size in a state where it protrudes by a predetermined distance ahead of the saw blade running line. In this state, the front part of the material is then clamped and fixed by both vice jaws 23 and 25 of the main body vice mechanism 19, and at the same time, the front end of the material is clamped and fixed by the fixed vice jaw 33 and the movable vice jaw 35 of the front vice mechanism 31. .

Thereafter, the cutting section 3 is lowered and the saw blade 9 cuts a predetermined portion of the material.

After cutting the material, the feed screw 39 is driven to send the cut material forward by the front vice mechanism 31.

Thereafter, with the main body vice mechanism 19 clamping the material, the material feeding vice mechanism 21 releases the clamping of the material, moves backward by a fixed distance by reverse rotation of the feed screw 37, and clamps and fixes the material again. At this time, conversely, the main body vice mechanism 19 releases the clamping of the leading end of the material.

Subsequently, the feed vice mechanism 21 is moved forward again by a predetermined distance by the rotation of the feed screw 37, and feeds the material by a predetermined amount. Thereafter, the material is clamped and fixed by the main body vice mechanism 19 and the front vice mechanism 31 and cut using the same procedure as described above.

Next, the moving and fixing mechanisms of the fixed vice jaws 23, 27, and 33 of the main body vice mechanism 19, material feeding vice mechanism 21, and front vice mechanism 31 of the bandsaw machine 1 will be described next.

Vise base 4 as shown in Figures 4 and 5.
A fixed vice jaw 27 is movably provided at 1. This stationary vise jaw 27 is horizontally provided with a guided portion 49 guided by a vise guide 41G fixed to a vise base 41, and vertically provided with a material holding portion 27a for holding a material. A reinforcing stay 27 is provided between both sides of the rear surface of the guide portion 27a and both sides of the guided portion 49.
b, 27c are provided. The above-mentioned both reinforcing stays 27b, 27c and both reinforcing stays 27b,
A cylinder 43 is provided in the space surrounded by the cover portion 27d of the cover 27c, and a stud 45 is screwed into the cylinder 43. This stud 45 is attached to the base 4 by a bolt 51.
Attach the nut 47 to the vise guide 41G fixed to 1.
has been fixed through.

A piston rod 53 is movably provided within the cylinder 43, and a fixed vice jaw 27 is connected to the piston rod 53. Further, an elastic body 55 such as a spring is interposed between the outer end of the cylinder 43 and the fixed vise jaw 27, and applies a spring force to the fixed vice jaw 27 in a direction to bring it into an unclamped state. When a material is to be clamped by the fixed vise jaw 27, oil is allowed to flow into the cylinder 43 through the stud 45, and the piston rod 53 is moved to push the vise jaw 27. Due to this movement, the fixed vise jaw 27 moves a little while compressing the elastic body 55 and clamps the material.

When unclamping, the oil in the cylinder 43 is drained and the spring force of the elastic body 55 returns the vice jaw 27 to its original position.

Note that the material clamping portion 27a of the fixed vise jaw 27
A plate 57 is removably provided on the
When clamping materials with uneven shapes,
The plate 57 is removed for use. Also, in the case of the fixed vise jaw mentioned above, a spring return type single-acting cylinder was used, but
It is also possible to utilize a double-acting cylinder mechanism.
However, when this double-acting cylinder mechanism is used, one more oil pipe is required.

Furthermore, although the material feeding fixing vise 27 of the material feeding vise mechanism 21 has been described above, the main body fixing vise 23 of the main body vice mechanism 19 and the front fixing vise 3 of the front vice mechanism 31 have been described above.
3 has a similar configuration.

Next, the detailed structure of the movable vice 29 will be explained based on FIGS. 6 and 7. base 41
A cylinder guide 59 is provided at the top of the cylinder.
A cylinder 61 is slidably provided within the cylinder guide 59, and a movable vice jaw 29 is attached to one end of the cylinder 61 with a bolt 63. The other end of the cylinder 61 is connected to a guide bar 6 provided on a block 65 on the base 41.
Guided by 7.

A piston rod 71 having a piston 69 attached to its tip is provided within the cylinder 61, and an inner tube 73 passing through the piston 69 is further provided within the piston rod 71.

For this piston rod 71, the oil flow hole 7
5 is formed, and the internal space of the piston rod 71, which communicates with the oil introduction hole 77 formed in the block 65, is also communicated with the first oil chamber 79 of the cylinder 61. For oil introduction hole 77, oil pipe 81
is connected.

The inner pipe 73 communicates with a second oil chamber 83 of the cylinder 61 and also communicates with another oil pipe 85 at the block 65 to introduce oil into the second oil chamber 83.

To explain the operation of the movable vice jaw 29, when clamping a material, oil is introduced into the inner pipe 73 through the oil pipe 85, and from this inner pipe 73 the second
Oil is allowed to flow into the oil chamber 83. This inflow of oil pushes the cylinder 61 to the right in FIG. 6, causing the movable vice jaw 29 to move in the direction of clamping the material.

When unclamping the movable vice jaw 29 from the material, oil is introduced into the piston rod 71 using the oil pipe 81. This piston rod 7
When oil is introduced into the cylinder 61, the oil is introduced into the first oil chamber 79 of the cylinder 61 through the oil flow hole 75,
The cylinder 61 is moved to the left, and the movable vice jaw 29 is moved in the unclamping direction.

During the clamping and unclamping operations of the cylinder 61, the cylinder guide 59 fixed on the base 41 guides the operation of the cylinder 61, thereby realizing smooth movement of the movable vise. And a cylinder guide 59 fixed on the base 41
Since the movement of the cylinder 61 is supported by this, the rigidity of the movable vice jaw 29 can be increased. Although the material feeding movable vice jaw 29 of the material feeding vice mechanism 21 has been described above, the movable vice jaws 25 and 35 in the main body vice mechanism 19 and the front vice mechanism 31 can also have a similar configuration.

In the material support section 5, a sizing measuring device is required to feed the elongated material in sizing increments. FIG. 8 and FIG. 9 show an example of a fixed size feed material measuring device. A rack 89 extends in the material feeding direction and is fixed to the material feeding frame 15 that supports the support roller 13. A pinion 91 that meshes with the rack 89 is provided at the lower part of the material feeding vice mechanism 21. This pinion 91 is the holder 93
This holder 93 is swingably held by a bracket 97 via a shaft 95.

The holder 93 of the pinion 91 is further urged by a spring 99 in a direction where it will not collide with the rack 89. Further, a spring 101 is provided on the shaft 95 so that the holder 93 is supported on the bracket 97 without rattling.

A rotation speed detector 103 consisting of an encoder, potentiometer, etc. is connected to the pinion 91.

The base 41 of the material feeding vice mechanism 21 is guided in the material feeding direction by a guide shaft 105.

To explain the operation of the fixed size material feeding measuring device 87, when the base 41 of the material feeding vice mechanism 21 is moved in the material feeding direction along the guide shaft 105,
Along with this movement, the pinion 91 also moves in the material feeding direction. On the other hand, since the frame 15 is fixed,
The rack 89 fixed to the frame 15 is also stationary. Therefore, the pinion 91 that meshes with the rack 89 rotates with its own movement, and the number of rotations thereof is measured by the number of rotations detector 103, thereby measuring the size of the material being fed. And this rotation speed detector 10
When it is determined that the base 41 has moved by a certain distance based on the signal from the machine 3, the material feeding operation is stopped and the cutting operation is started.

The pinion 91 can mesh with the rack 89 reliably without any bumps due to the action of the shaft 95 and the spring 99.
The rotation speed of the pinion can be measured accurately. Further, since the holder 93 and the bracket 97 can be combined with the spring 101 without rattling, the number of revolutions can be measured even more accurately.

In the above case, the rack 89 was fixed and the pinion 91 was moved;
A similar configuration can be used even when the pinion is fixed. Furthermore, although the material feeding vice mechanism 21 has been described in the above case, the present invention can also be implemented in the front vice mechanism 31 that feeds out the cut material while holding it there.

[Effects of the invention] As can be understood from the above description of the embodiments, the present invention provides a fixed vice jaw 27 on one side of the vise base 41, and the material is placed opposite the fixed vice jaw 27. A movable vice jaw 29 for clamping is provided on the other side of the vice base 41 so that it can freely reciprocate toward and away from the stationary vice jaw 27, and the stationary vice jaw 27 can be slightly retracted from the material clamping position. With the vise device provided, fixed vise 2
Reinforcing stays 27b on both sides are provided between both sides of the rear surface of the material holding part 27a of No. 7 and both sides of the guided part 49 of the fixed vise jaw 27 guided by the vise guide 41G provided in the vise base 41. ，
27c and the cover portions 27d of both reinforcing stays 27b, 27c. 27, and between a part of the fixed vice jaw 27 and the cylinder 43, the fixed vice jaw 27 is connected to the cylinder 43.
An elastic body is provided which is biased in a direction that brings the clamp into an unclamped state.

With the above structure, according to the present invention, the overall structure of the fixed vise jaw 27 can be made compact, the cylinder 43 can be protected, and objects cannot be caught between the fixed vice jaw 27 and the cylinder 43. This will further improve safety.

[Brief explanation of drawings]

Fig. 1 is a plan view of a band saw machine as a cutting machine using an embodiment of this invention, Fig. 2 is a front view of the same band saw machine, Fig. 3 is a side view of the above band saw machine, and Fig. 4 is a fixed vise jaw. 5 is a side view of the stationary vise yaw, FIG. 6 is a sectional view of the movable vise yaw provided opposite the stationary vise yaw, FIG. 7 is a side view of the movable vise yaw, and FIG. FIG. 9 is a front view showing how the sizing material measuring device of the sizing material mechanism is installed, and FIG. 9 is a side view showing the installed state of the sizing material measuring device. 1... Band saw machine, 3... Cutting section, 5... Supporting section,
7... Vise mechanism section, 13... Support roller, 15
...Frame, 19...Body vice mechanism, 21...
...Material feeding vice mechanism, 23...Body fixed vise jaw, 25...Body movable vice jaw, 27...Material feeding fixed vice jaw, 29...Material feeding movable vice jaw, 31...Front vice mechanism, 33...Front fixed Vise jaw, 35...Front movable vice jaw, 37, 39...Feed screw, 41...Base,
43...Cylinder, 45...Stud, 53...
Piston rod, 55...Elastic body, 57...Plate, 59...Cylinder guide, 61...Cylinder, 65...Block, 67...Guide bar, 6
9... Piston, 71... Piston rod, 73
...Inner pipe, 79...First oil chamber, 81...Oil piping,
83...Second oil chamber, 85...Oil pipe, 87...Size feeding measuring device, 89...Rack, 91...Pinion, 93...Holder, 95...Shaft, 97
...Bracket, 99,101...Spring,
103... Rotation speed detector, 105... Guide shaft.

Claims (1)

[Scope of utility model registration request] A fixed vise jaw 27 is provided on one side of the vise base 41, and a movable vice jaw 29 that faces the fixed vice jaw 27 and holds the material.
Vise jaw 2 fixed on the other side of vise base 41
The material clamping portion 27a of the fixed vice jaw 27 is provided as a vise device in which the fixed vice jaw 27 is provided so as to be freely reciprocated in directions approaching and away from the material clamping position 7, and the fixed vice jaw 27 is slightly retractable from the material clamping position.
Reinforcing stays 27b and 27c on both sides provided between both sides of the rear surface and both sides of the guided part 49 of the fixed vise jaw 27 guided by the vise guide 41G provided in the vise base 41, and both reinforcement stays. A small cylinder 43 disposed in a space surrounded by the cover portions 27d of the stays 27b and 27c is fixed to the vice guide 41G, and a piston rod 53 provided in the cylinder 43 is connected to the fixed vice jaw 27. provided between a part of the fixed vise 27 and the cylinder 43,
A vise device for a cutting machine, characterized in that it is provided with an elastic body 55 that urges the fixed vise jaw 27 in a direction to bring it into an unclamped state.