JPH0636733U - Clamp device - Google Patents

Abstract

(57) [Abstract] [Purpose] In the clamp device, the existing tapped holes on the board surface can be effectively used to enable mounting on the board surface, the position switching of the clamp device is simplified, and the workability of clamping and unclamping is improved. , Strengthening the clamping force, etc. The clamp device 10 includes a base member 11 fixed to the board surface 2 by a plurality of bolts so as to be able to be released, and a clamp mechanism 10 placed on the base member 11 so as to be movable in the front-rear direction by a guide mechanism 13. Clamp body 12 locked so as not to float from 11 and clamp body 12
The guide mechanism 13 includes a plurality of elongated guide holes 14 in the front-rear direction, a plurality of flanged bushes 17, and a plurality of flanged bushes 17.
It is composed of a plurality of bolts 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp device for fixing a mold or a work to be machined to a board surface of a board member.

[0002]

[Prior art]

 As a clamping device for clamping the mold of an injection molding machine or a press machine on a mold fixing plate, various clamp devices are disclosed, for example, in Japanese Utility Model Publication No. 48-44073 and Japanese Patent Publication No. 52-30371. The clamp device is put to practical use. In particular, in a horizontal injection molding machine, a vertically oriented mold fixing plate is provided, and clamping devices are provided on both left and right sides of the mold fixing plate.When exchanging molds, an overhead crane is used to remove the mold. It is common to exchange. When exchanging the mold, the wire of the crane is connected to the mold, the clamp of the clamp device is released, and the clamp device is retracted to the side, then lift the used mold upward and carry it out. , Another mold is suspended by a crane, lowered along the board surface, and the mold is fixed to the board surface by the clamp device while the clamp device is moved toward the mold. Further, even when the size of the mold is changed by exchanging the mold, it is necessary to change the mounting position of the clamp device.

Since the T-shaped groove is not formed on the board surface of the horizontal injection molding machine and only a plurality of tap holes are formed in a predetermined arrangement pattern, the clamping device is the tap hole. It is desirable to apply a clamp device that can be fixed to the board surface via the and that can be switched between positions when mounted on the board surface. As a clamp device that can meet this demand, the clamp device described in Japanese Utility Model Publication No. 58-54990 has been put to practical use. In this clamp device, a slit is formed in the clamp arm, and the bolt hole of the holding plate engaged with the upper end of the clamp arm and the fulcrum bolt inserted through the slit of the clamp arm are screwed into the bolt holes of the board surface. The rear end of the clamp arm is supported on the board surface via a spacer or a bolt member, and the fulcrum bolt is fastened to fix the mold to the board surface at the front end of the clamp arm.

[0004]

[Problems to be solved by the device]

 When changing the mold in the injection molding machine or the press machine, retract the clamp device, remove the mold, then load another mold, set the clamp device to the clamp position, It will be clamped. In the clamp device of Japanese Utility Model Publication No. 52-30371, since the clamp body is fixed to the board surface by bolts, it takes labor and time to switch the position of the clamp device when the die is replaced. The clamp device disclosed in Japanese Utility Model Laid-Open No. 48-44073 cannot be mounted on a board surface on which a T groove is not formed, such as the board surface of an injection molding machine.

On the other hand, the clamp device described in Japanese Utility Model Publication No. 58-54990 can be mounted by effectively utilizing the existing tap holes on the board surface, and the position of the clamp arm can be switched by loosening the fulcrum bolt. Is. However, when the clamp is released, the clamp arm and the fulcrum bolt are not connected at all, so they are likely to fall apart, and their handling and storage are troublesome. Since this clamp device is lightweight, it is suitable for fixing the mold to the vertical board surface of a horizontal injection molding machine, but since it cannot generate a strong clamping force, a large number of clamp devices are required. It is difficult to improve the workability of clamping and unclamping, and there are problems such as the risk of dropping parts when unclamping. The object of the present invention is to enable the clamp device to be mounted on the board surface by effectively utilizing the existing tapped holes on the board surface, to simplify the position switching of the clamp device, and to improve the workability of clamping and unclamping. , Strengthening the clamping force, etc.

[0006]

[Means for Solving the Problems]

 The clamp device according to claim 1 is a clamp device for fixing an object to be clamped to a board surface of a board member, wherein a thick plate-shaped base member is releasably fixed on the board surface, and a top of the base member. A guide mechanism that locks the clamp body, which is placed with the bottom surface in contact with the surface, with the base member so that the clamp body is movable in the front-rear direction and does not float above the top surface of the base member. A plurality of hydraulic cylinders, each of which is mounted orthogonally to the board surface at the output part provided at the front end of the clamp body and is capable of driving the piston rod to advance toward the board surface, in a direction orthogonal to the front-rear direction. And a plurality of hydraulic cylinders arranged in a line.

In the clamp device according to a second aspect, the guide mechanism includes a plurality of guide holes formed in the clamp body in the front-rear direction so as to be elongated and orthogonal to the board surface, and arranged in parallel, and the plurality of guide holes. A plurality of bushes with flanges respectively inserted into the base, and a plurality of bolts inserted into the plurality of bushes with flanges and screwed into bolt holes of the base member to fix the bushes with flanges to the top surface of the base member. It is composed of. Here, the guide hole is formed in a T-shaped hole having a stepped surface that is open at the top of the clamp body, and the flanged bush locks the stepped portion. The guide hole may be formed in a hole having a T-shaped cross section which is not opened at the top of the clamp body and has a step so that the bush with the collar locks the step. The guide hole may be open to the front end or the rear end of the clamp body (claim 4). In the clamp device of the fifth aspect, the output portion is provided with a hydraulic pressure supply port and an oil passage that connects the hydraulic pressure supply port with hydraulic chambers of a plurality of hydraulic cylinders.

In the clamp device according to claim 6, a hydraulic cylinder directed in the front-rear direction is provided inside the clamp body, and a front end side portion of a piston rod of the hydraulic cylinder extends outward from a rear end portion of the clamp body. A fixed metal fitting is provided for fixing the tip side portion of the piston rod to the board surface. In the clamp device according to claim 7, a hydraulic booster including a plunger inserted into a plunger chamber communicating with the oil passage and a hydraulic cylinder driving the plunger is provided inside the clamp body. . In the clamp device according to claim 8, the guide mechanism includes a plurality of guide holes formed in the clamp body in the front-rear direction so as to be elongated and orthogonal to the board surface, and the guide holes are inserted in parallel with each other. And a plurality of bolt members screwed into the bolt holes of the base member. 10. The clamp device according to claim 9, wherein the guide mechanism includes a T groove formed in one of the base member and the clamp body in a front-rear direction, and a guide groove formed in the other of the base member and the clamp body in the front-rear direction. It is configured with an engaging portion that slidably engages.

[0009]

[Operation and effect of the device]

 In the clamp device according to claim 1, the base member is fixed to the board surface by a fixing means such as a bolt, and the guide mechanism is such that the clamp body is movable back and forth with respect to the base member and at the top of the base member. It is locked so that it does not rise above the surface. In the unclamped state, the clamp body is in the retracted position retracted rearward, and when the clamp target is set on the board and clamped, the clamp body is advanced to the position where its output section wraps around the clamp target. When the hydraulic pressure is supplied to the hydraulic cylinders in this state, the piston rods of the hydraulic cylinders advance toward the board surface, that is, toward the object to be clamped, and fix the object to be clamped to the board surface. The clamp reaction force at this time is supported by the base member by the guide mechanism.

Therefore, the object to be clamped can be strongly clamped by the plurality of hydraulic cylinders provided in the output section. Further, in the released state of the clamp, the clamp main body can move in the front-rear direction, so that the position of the clamp device can be freely switched in the front-rear direction. Since it is clamped by multiple hydraulic cylinders, the workability of clamping and unclamping can be improved, and the clamping device does not separate from the board surface even in the unclamped state. Moreover, the front-rear position of the clamp body when clamping can be freely set within the range permitted by the guide mechanism according to the size of the object to be clamped, which is excellent in versatility. Also, the position of the clamp device can be changed by changing the mounting position of the base member on the board surface. Furthermore, since the clamp body, which has a complicated structure by incorporating multiple hydraulic cylinders and most of the guide mechanism structure, and the base member with a simple structure are separated, the clamp body can be manufactured. Since it is easy and it is advantageous in terms of material cost, the manufacturing cost of the clamp device can be reduced.

In the clamp device according to the second aspect, the guide mechanism includes a plurality of guide holes formed in the clamp body, a plurality of flanged bushes, and a plurality of bolts. Since it does not become so large, it is possible to reduce the machining cost of multiple guide holes. In the clamp device according to the third aspect, since the head of the bolt can be operated from outside the clamp main body, the clamp device can be easily attached and detached.

In the clamp device of the fourth aspect, since the guide hole is not opened at the top of the clamp body, foreign matter does not enter the guide hole. Therefore, the clamping device is suitable for clamping a machined work. In the clamp device of the fifth aspect, since the hydraulic pressure can be supplied from one hydraulic pressure supply port to the plurality of hydraulic cylinders, the hydraulic pressure supply system becomes simple.

In the clamp device according to the sixth aspect, the position of the clamp main body can be switched in the front-back direction by the hydraulic cylinder provided in the clamp main body in the front-back direction. In the clamp device according to the seventh aspect, the hydraulic booster can increase the hydraulic pressure of the plurality of hydraulic cylinders to strengthen the clamping force. In the clamp device of claim 8, basically, the same action and effect as the clamp device of claim 1 can be obtained, but the plurality of collared bushes are saved and the clamp body is directly locked by bolts. With this configuration, the structure of the clamp device is simplified. In the clamp device of the ninth aspect, since the guide mechanism is composed of the T groove and the engaging portion, the structure of the guide mechanism is simplified and the durability is excellent.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example in which the present invention is applied to a mold fixing plate of a horizontal injection molding machine and a clamp device for fixing the mold. As shown in FIGS. 1 and 2, dies 3 are arranged on a plate surface 2 of a pair of vertical mold fixing plates 1 of a horizontal injection molding machine, and each mold 3 has a pair of clamping devices 10. It is fixed to the board surface 3 by.

The structure of the clamp device 10 will be described with reference to FIGS. 3 to 5. The base member 11 is composed of a vertically long and slender rectangular thick plate metal member. For example, eight bolt holes 11a are arranged in the base member 11 at an arrangement pitch that matches the arrangement pitch of the bolt holes 4 on the board surface 2. The base member 11 is formed so as to be orthogonal to the board surface 2, and the bottom surface of the base member 11 is in contact with the board surface 2, and the bolts 11b inserted into the eight bolt holes 11a are screwed into the bolt holes 4 of the board surface 2. It is fixed to the board surface 2 so that it can be released.

The clamp main body 12 is substantially the same size as the base member 11 in the vertical size and the width size, and is composed of a metal plate member having a rectangular shape elongated in the vertical direction. It is arranged on the base member 11 so as to be in surface contact with the top surface 11c of the member 11. An output portion 12a facing the board surface 2 is formed at a front end portion of the clamp body 12 at a predetermined interval into which the fixed portion 3a of the mold 3 is inserted.

Next, the guide mechanism 13 that locks the clamp body 12 to the base member 11 so as to be movable back and forth and not to float from the base member 11 will be described. The guide mechanism 13 includes, for example, four guide holes 14 formed in the clamp body 12, four flanged bushes 17 inserted into the guide holes 14, and four flanged bushes 17 inserted into the guide holes 14, respectively. The four bolts 20 are screwed into the bolt holes 11d of the base member 11.

Explaining these in detail, four guide holes 14 elongated in the front-rear direction are formed in parallel in the upper part and the lower part of the clamp body 12 in the middle part of the clamp body 12 in the front-rear direction. Has been done. The guide hole 14 is formed in a T shape with the top end opened, and the guide hole 14 is composed of a narrow hole portion 14a and a wide hole portion 14b, and a step portion 16 is formed at the bottom of the wide hole portion 14b. There is.

A bushing 17 with a collar, which is composed of a tubular portion 18 and a flange portion 19 on the top thereof, is inserted into each guide hole 14, and the tubular portion 18 is in the narrow hole portion 14a and the collar portion 19 is in the wide hole portion. The cylindrical portions 18 are respectively arranged in the inner portions of 14b, and are formed to be slightly longer than the height of the narrow hole portion 14a. A bolt 20 is inserted from the outside into each flanged bush 17, and a tip end portion of the bolt 20 is screwed into a bolt hole 11d of the base member 11. Each flanged bush 17 is provided between the collar portion 19 and the step portion 16. It is fixed to the base member 11 by a bolt 20 which is inserted into the flanged bush 17 and screwed into the bolt hole 11d of the base member 11 with a slight gap left therebetween. Therefore, the clamp body 12 is movable in the front-rear direction with respect to the base member 11 within the range permitted by the guide mechanism 13, but the four flange portions 19 of the four flanged bushes 17 allow the base body 11 to move. It is locked so as not to float from the member 11. The guide hole 14 is formed so that the output portion 12a projects forward from the front end of the base member 11 when the clamp body 12 is advanced to the maximum extent. The head 20a of each bolt 20 is housed in the wide hole 14b.

The output section 12a is provided with eight hydraulic cylinders 30 arranged in a line in the vertical direction in a direction orthogonal to the board surface 2. With respect to each hydraulic cylinder 30, a cylinder chamber is formed by closing the bottom of the cylinder hole formed in the clamp body 12 with an annular member 31, and the piston 32 is accommodated in the cylinder chamber and extends from the piston 32 to the board surface 2 side. The piston rod 33 is inserted through the rod hole of the annular member 31, and the piston rod 33 is configured so as to be able to advance toward the board surface 2 from the output portion 12a. A chamber 34 is formed, and an air chamber 35 is formed on the board surface 2 side of the piston 32.

In order to supply the oil pressure to the oil chambers 34 of the eight hydraulic cylinders 30, the oil passage 36 communicating from the hydraulic pressure supply port 37 at the upper end of the clamp body 12 to the top of the eight oil chambers 34 is formed straight. A hydraulic hose 38 extending from a hydraulic supply device (not shown) is connected to the hydraulic supply port 37. In order to supply pressurized air to the air chambers 35 of the eight hydraulic cylinders 30, the air passages 41 that communicate with the eight air chambers 35 from the air supply ports 39 at the upper end of the clamp body 12 are formed straight. An air hose 40 extending from a pressurized air supply device (not shown) is connected to the supply port 39. However, the air chamber 36 may be configured as an oil chamber to supply hydraulic pressure, or a return spring may be attached to the air chamber 36 so that the piston 32 can be returned by the spring. May be.

The operation of the clamp device 10 described above will be described. In this clamp device 10, the base member 11 can be bolted to the board surface 2 by utilizing the eight bolt holes 4 in the board surface 2, and the clamp body 12 can be moved back and forth and floated by the guide mechanism 13. It is attached to the base member 11 so as not to do so. In the unclamped state, as shown in FIG. 4, the position can be switched between the retracted position shown by the solid line and the clamp position shown by the chain line, and the clamp body 12 is separated from the board surface 2 by the base member 11 and the guide mechanism 13. Never. When the clamp device 10 is switched to the clamp position and hydraulic pressure is supplied to the eight hydraulic cylinders 30, the eight piston rods 33 advance to strongly fix the fixed portion 3a of the die 3 to the board surface 2. The clamp reaction force in this clamped state is strongly supported by the base member 11 by the eight bolts 20 via the collar portions 19 of the eight collared bushes 17.

When the mold 3 is replaced, the mold 3 is replaced with the clamp released and switched to the retracted position. Then, after the mold 3 is replaced, the clamp body 12 is switched to the clamp position again and then brought into the clamped state. Since the clamp body 12 can freely adjust its position in the front-rear direction within the range permitted by the guide mechanism 13, the molds 3 of various sizes can be fixed. Further, by changing the mounting position where the base member 11 is mounted on the board 2, various sizes of dies 3 can be fixed. Since the configuration is such that eight hydraulic cylinders 30 are used for clamping, it is possible to easily perform clamp driving and unclamping.

Moreover, since the clamp body 12 having a complicated structure and requiring machining is separated from the base member 11 having a simple structure, it is easy to machine the clamp body 12, particularly the guide hole 14. In addition, since the material of the material of the clamp body 12 and the base member 11 is advantageous, the manufacturing cost of the clamp device 10 can be reduced. The guide hole 14, the flanged bush 17 and the bolt 20 are not limited to four sets, but two or more sets may be provided, and eight or less or eight or more hydraulic cylinders 30 may be provided. Further, the flanged bush 17 may be omitted, and the step portion 16 may be directly locked by the head 20a of the bolt 20.

Next, a plurality of modified examples in which a part of the clamp device is modified will be described. However, the same components as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 6, a hydraulic cylinder 45 oriented in the front-rear direction is provided inside the central portion of the clamp body 12A of the clamp device 10A, and its piston rod 46 projects rearward from the rear end portion of the clamp body 12A. The L-shaped fixing member 49 is fixed to the board surface 2 by the bolt 50, and the piston rod 46 is connected to the fixing member 49 by a pair of nuts 51. Hydraulic hoses 47 and 48 extending from a hydraulic supply device (not shown) are connected to the hydraulic cylinder 45. In the unclamped state, the hydraulic cylinder 45 can move the clamp device 10A in the front-rear direction to switch the position. With this configuration, the clamp drive, the clamp release, and the position switching of the clamp device 10A can be remotely controlled via the hydraulic pressure supply device. An air cylinder may be provided instead of the hydraulic cylinder 45.

As shown in FIG. 7, a hydraulic booster 60 oriented in the front-rear direction is provided inside the central portion of the clamp body 12B of the clamp device 10B. The hydraulic booster 60 includes a large-diameter cylinder hole 61, a piston 62 attached to the large-diameter cylinder hole 61, an oil chamber 63, and a spring 64 attached to the spring chamber (however, this can be omitted). A small diameter plunger hole 65, a plunger 66 extending from the piston 62 and inserted into the small diameter plunger hole 65, and a plunger chamber 67 connected to the oil passage 36. A hydraulic pressure can be supplied to the oil chamber 63 via a hydraulic hose 68 extending from a hydraulic pressure supply device (not shown).

When the hydraulic pressure is supplied to the eight hydraulic cylinders 30 before the hydraulic pressure is supplied to the oil chamber 63 in the state where the clamp device 10 B is switched to the clamp position, the hydraulic pressure is supplied from the oil passage 36 to the plunger chamber 67. It Next, when hydraulic pressure is supplied to the oil chamber 63 to drive the piston 62 forward, the plunger 66 increases the hydraulic pressure in the plunger chamber 67, the oil passage 36, and the oil chamber 34 of the eight hydraulic cylinders 30. Therefore, the clamping force can be strengthened. However, in order to prevent the hydraulic pressure from flowing backward toward the hydraulic hose 38, the hydraulic pressure supply device for supplying the hydraulic pressure to the hydraulic hose 38 is provided with an opening / closing valve or the like. When the hydraulic booster 60 is provided, the hydraulic pressure of the hydraulic cylinder 30 can be increased to remarkably enhance the clamping force, or the hydraulic cylinder 30 can be downsized. Instead of the hydraulic booster 60, a screw type hydraulic booster configured to pressurize the hydraulic pressure with a screw member may be provided. Alternatively, when the volume of the plunger chamber 67 of the hydraulic booster 60 is made large, the hydraulic hose 38 and the hydraulic supply port are omitted, and the hydraulic pressure is supplied from the hydraulic booster 60 to the eight hydraulic cylinders 30. You can also do it.

As shown in FIG. 8, when the clamp body 12C has a large thickness, the output section 12c is provided with eight hydraulic cylinders having a two-stage serial structure. An auxiliary hydraulic cylinder 30C is provided in series on the top side of each hydraulic cylinder 30 having substantially the same structure as the hydraulic cylinder 30, and an oil chamber 34 is formed in the piston 70 and the piston rod 71 of the auxiliary hydraulic cylinder 30C. It is connected to the oil chamber 73 through the oil passage 72, and is configured to be clamp-driven by the oil pressure of both hydraulic cylinders 30 and 30C. With this structure, the clamping force can be enhanced.

As shown in FIGS. 9 and 10, the guide mechanism 13D includes a plurality of guide holes 14D, a plurality of flanged bushes 17, and a plurality of bolts 20. That is, the plurality of guide holes 14D of the clamp body 12D of the clamp device 10D are formed in the top of the clamp body 12D as T-shaped cross-section holes that are not opened, and are opened at the rear end (or front end) of the clamp body 12D. ing. In the case of this clamp device 10D, the plurality of flanged bushes 17 are previously fixed to the base member 11 with the bolts 20, and then the clamp body 12D is moved from the front (or from the rear) and fixed with the bolts 20. The flanged bush 17 can be introduced into each guide hole 14D. Since the outside of the guide hole 14D is not open, foreign matter does not enter the guide hole 14D. Therefore, the clamp device is suitable for fixing a workpiece machined by a machine tool. The flanged bush 17 may be omitted and the step portion 16 may be directly locked by the head of the bolt 20, and the rear end portion of the guide hole 14D may be closed by a removable metal fitting. It may be configured to. The base member 11 is releasably fixed to the board surface 2 with a plurality of bolts.

As shown in FIGS. 11 and 12, the guide mechanism 13E includes a plurality of T-shaped grooves 14E formed in the clamp body 12E in the front-rear direction and a plurality of T-shaped grooves formed on the top of the base member 11E. It comprises a plurality of T-shaped engaging portions 21 which are slidably engaged with the grooves 14E and lock the clamp body 12E so as not to float. Since the rear end of the T groove 14E is opened, for example, a pin member 22 is provided on the clamp body 12E in order to prevent the base member 11E from being separated from the front of the clamp body 12E. A slender slit 23 may be formed in the front-rear direction in the portion 21, and the pin member 22 may be locked by the front end wall 23a of the slit 23. However, the guide mechanism 13E may be turned upside down to form the T groove 14E on the base member 11E side, and the engaging portion 21 may be formed on the clamp body 12E side.

As shown in FIGS. 13 and 14, the guide mechanism 13F includes a plurality of guide holes 14F and a plurality of bolts 20F which are respectively inserted into the guide holes 14F and screwed into the base member 11. Has been done. In the clamp body 12F of the clamp device 10F, a plurality of guide holes 14F having a rectangular cross section are formed instead of the guide holes 14, the flanged bush 17 is omitted, and a step inserted into each guide hole 14F. The attached bolt 20F is screwed into the bolt hole 11d of the base member 11, and a slight gap is formed between the head 20b of each bolt 20F and the top end surface of the clamp body 12F. 20b, the clamp body 12F is configured to be movable in the front-rear direction and locked so as not to float above the base member 11. In this clamp device 10F, the structure of the guide mechanism 13F is simplified, and since the flanged bush 17 can be omitted, the overall configuration is simplified.

The clamp device described above fixes not only the mold of the injection molding machine but also the mold of the press machine to the board surface of the bolster, and the workpiece machined by the machine tool is mounted on the machine tool table. It can also be applied to fix to the board surface or the board surface of a work pallet, and can be applied to fix the various works and tools to the board surface of the board member.

[Brief description of drawings]

FIG. 1 is a diagram showing a state in which a mold is fixed to a mold fixing plate of a horizontal injection molding machine by a clamp device according to an embodiment.

FIG. 2 is a perspective view of the mold and the clamp device of FIG.

3 is a side view of the clamp device of FIG. 1. FIG.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is a side view of a clamp device according to a modified example.

FIG. 7 is a side view of a clamp device according to a modification.

FIG. 8 is a partial view of a clamp device according to a modification corresponding to FIG. 4.

FIG. 9 is a view corresponding to FIG. 4 of a clamp device according to a modification.

10 is a sectional view taken along the line 10-10 of FIG.

11 is a view corresponding to FIG. 4 of a clamp device according to a modification.

12 is a sectional view taken along line 12-12 of FIG.

13 is a view corresponding to FIG. 4 of a clamp device according to a modification.

14 is a sectional view taken along line 14-14 of FIG.

[Explanation of symbols]

 1 mold fixing plate 2 plate surface 3 mold (object to be clamped) 10, 10A to 10F clamp device 11 base member 12, 12A to 12F clamp body 12a, 12c output unit 13, 13D, 13E, 13F guide mechanism 14, 14D, 14E, 14F Guide hole 16 Step portion 17 Bush with collar 20, 20F Bolt 30, 30C Hydraulic cylinder 33 Piston rod 36 Oil passage 37 Hydraulic supply port 45 Hydraulic cylinder 46 Piston rod 49 Fixing bracket 60 Hydraulic booster

Claims (9)

[Scope of utility model registration request] 1. A clamp device for fixing an object to be clamped to a board surface of a board member, comprising: a thick plate-like base member releasably fixed on the board surface; and a bottom surface on a top surface of the base member. And a guide mechanism for locking the clamp body to the base member so as to be movable in the front-rear direction and not to float above the top surface of the base member, and the clamp body. A plurality of hydraulic cylinders, each of which is mounted on the output portion provided at the front end portion of the cylinder in a direction orthogonal to the board surface and can drive the piston rod to advance toward the board surface, are arranged in one row in the direction orthogonal to the front-rear direction. And a plurality of hydraulic cylinders that are provided, and a clamping device. 2. The guide mechanism includes a plurality of guide holes, which are elongated in the front-rear direction and formed in the clamp body in a shape orthogonal to the board surface, and arranged in parallel, and a plurality of guide holes inserted in the plurality of guide holes, respectively. And a plurality of bolts that are respectively inserted into the plurality of collared bushes and screwed into the bolt holes of the base member to fix the collared bush to the top surface of the base member. The clamp device according to claim 1. 3. The guide hole is formed as a hole having a T-shaped cross section, which is open at the top of the clamp body and has a step.
The clamp device according to claim 2, wherein the flanged bush is configured to lock the step portion. 4. The guide hole is formed as a hole having a T-shaped cross section that is not opened at the top of the clamp body and has a step, and the bush with collar is configured to lock the step. The clamp device according to claim 2, wherein the guide hole is opened at a front end portion or a rear end portion of the clamp body. 5. The clamp according to claim 1, wherein the output portion is provided with a hydraulic pressure supply port and an oil passage that connects the hydraulic pressure supply port with the hydraulic chambers of the plurality of hydraulic cylinders. apparatus. 6. A hydraulic cylinder directed in the front-rear direction is provided inside the clamp body, and a tip side portion of a piston rod of the hydraulic cylinder extends outward from a rear end portion of the clamp body, and a tip side of the piston rod. The clamp device according to claim 1, further comprising a fixing bracket for fixing the portion to the board surface. 7. A hydraulic booster including a plunger inserted into a plunger chamber communicating with the oil passage, and a hydraulic cylinder driving the plunger is provided inside the clamp body. Item 5. A clamp device according to item 5. 8. The guide mechanism includes a plurality of guide holes formed in the clamp body in the front-rear direction so as to be elongated and orthogonal to the board surface, and arranged in parallel, and the guide holes are inserted into the plurality of guide holes, respectively. The clamp device according to claim 1, wherein the clamp device comprises a plurality of bolt members screwed into bolt holes of the member. 9. The guide mechanism is formed in one of a base member and a clamp body in a front-rear direction, and a T groove formed in the other of the base member and the clamp body in a front-rear direction so as to be slidable in the T groove. The clamping device according to claim 1, wherein the clamping device is configured to be engaged with.