JP3198790U - Clamping device - Google Patents

Abstract

A clamp device is provided in which a spacer wall portion can be added to a pressing surface side of an output portion by attaching a detachable spacer to an output portion of a clamp lever of a clamp body. An inverted gate-type detachable spacer 5 that is detachably attached to an output portion 16 of a clamp lever 3 and can be provided with a spacer wall 22 on the pressing surface 17 side of the output portion 16, and both ends of the output portion 16 A pair of support pins 6 that are provided so as to protrude to the side and can support the middle portion of the removable spacer 5 are provided. The detachable spacer 5 includes a pair of side wall portions that are separated so that the output portion 16 can be introduced, a spacer wall portion 22 that integrally connects the end portions of the side wall portions, and an inner surface side portion of the pair of side wall portions. A pair of engagement grooves 21 formed so that a pair of support pins 6 can be introduced respectively, and a pair of support pins 6 are introduced into the pair of engagement grooves 21 so that the detachable spacer 5 is output from the clamp lever 3. And a pair of permanent magnets 23 respectively mounted on the pair of side wall portions so that the pair of side wall portions are attracted to the pair of pivot wall portions 12 in a surface contact state in a state of being mounted on the portion 16. It is characterized by that. [Selection] Figure 1

Description

  The present invention relates to a lever-type clamp device that swings and drives a clamp lever by a fluid pressure cylinder, and more particularly to a device that includes a detachable spacer that is attached to one end of the clamp lever.

  Conventionally, in a clamp device, a clamp lever pivotally attached to a pair of pivot parts of a clamp body via a pin member is driven by a hydraulic cylinder, and the clamp object is a base on the clamp lever pressing part. Press and fix to a bolster or table.

  The clamping device described in Patent Document 1 is a T-groove insertion type hydraulic clamp for clamping a die used in a press machine or an injection molding machine or a workpiece used for machining, and a clamp lever is clamped by a fluid pressure cylinder A free piston is provided to transmit the reaction force of the fluid force to the upper surface of the base when driving. In the clamped state, the reaction force of the fluid pressure to drive the clamp acts on the free piston, and comes into contact with the upper surface of the base via the free piston.

  Then, when the clamp lever is driven to be clamped by the fluid pressure cylinder, it acts as an upward load on the pair of pivot portions of the clamp body, so that the clamp body is driven to be pushed upward while maintaining the horizontal posture. The T-shaped leg portion is in contact with the upper end wall surface of the T-groove over its entire length.

JP2013-94950A

  In ordinary lever-type clamp devices including the clamp device of Patent Document 1, the movable range of the pressing portion (output portion) of the clamp lever is small, so the thickness of the fixed plate portion of the mold that can be pressed and fixed by the clamp device is constant. There was a problem that it was limited to the thing of the range. Therefore, a plurality of types of clamp devices having a movable range corresponding to the thickness of the fixed plate portion of the mold are required, and the equipment cost is high.

Moreover, when exchanging the clamp device according to the thickness of the fixed plate portion of the mold, the clamp device is removed after sliding the clamp device along the T-groove of the substrate, and another clamp device is used as the T-groove of the substrate. Since it had to be moved along, it took a great deal of work to replace the clamping device.
Therefore, it is conceivable to increase the stroke of the fluid pressure cylinder and expand the movable range of the pressing part of the clamp lever.However, the clamp device becomes larger and the swing angle of the clamp lever increases, The problem of indentation on the surface remains.

  An object of the present invention is to provide a clamp device in which a spacer wall portion can be added to the pressing surface side of the output portion of the clamp lever by attaching a detachable spacer to the output portion of the clamp lever of the clamp body.

  The clamp device according to claim 1 includes a clamp body, a clamp lever that is rotatably mounted on a pair of pivot wall portions of the clamp body via a pivot pin, and the clamp lever can be driven to clamp. A lever-type clamp device comprising a fluid pressure cylinder, configured to input a driving force of the fluid pressure cylinder to one end portion of the clamp lever, and to press an object to be clamped by a pressing surface of an output portion on the other end side of the clamp lever Inverted gate-type attachment / detachment spacers that are detachably attached to the output unit so that a spacer wall can be added to the pressing surface side of the output unit, and projecting on both sides of the output unit, A pair of support pins capable of supporting the part, and the detachable spacer includes a pair of side walls spaced apart so that the output part can be introduced, and a spacer wall part integrally connecting the end parts of the side walls A pair of engaging grooves formed so that a pair of supporting pins can be introduced into the inner surface side portion of the pair of side wall portions, and a pair of supporting pins introduced into the pair of engaging grooves. The pair of side walls are attached to the pair of side walls so that the pair of side walls are attracted to the pair of pivot walls in a surface contact state with the detachable spacer attached to the output part of the clamp lever. And a permanent magnet.

  According to a second aspect of the present invention, there is provided a clamp device, a clamp lever mounted on a pair of pivot walls of the clamp body through a pivot pin so as to be able to rotate in the middle, and the clamp lever can be driven to be clamped. A lever-type clamp device comprising a fluid pressure cylinder, configured to input a driving force of the fluid pressure cylinder to one end portion of the clamp lever, and to press an object to be clamped by a pressing surface of an output portion on the other end side of the clamp lever Inverted gate-type attachment / detachment spacers that are detachably attached to the output unit so that a spacer wall can be added to the pressing surface side of the output unit, and projecting on both sides of the output unit, A pair of support pins capable of supporting the part, and the detachable spacer includes a pair of side walls spaced apart so that the output part can be introduced, and a spacer wall part integrally connecting the end parts of the side walls And a pair of engagement grooves formed so that a pair of support pins can be introduced into the inner surface side portions of the pair of side wall portions, respectively, and a pair of support pins is provided in the pair of engagement grooves. Introduced and attached to the pair of pivot walls so that the pair of side walls are attracted to the pair of pivot walls in surface contact with the detachable spacer attached to the output part of the clamp lever. And a pair of permanent magnets.

  According to a third aspect of the present invention, there is provided the clamp device according to the first or second aspect, wherein the clamp body is slidably engaged with a T groove of a base member on which the clamp body is installed, and has an inverted T-shaped T-shaped leg portion. It is characterized by having.

  Since the device of the present application has the configuration described in the column “Problem Solving Means”, the following effects can be obtained. According to the first aspect of the present invention, a pair of support pins projecting from both sides of the output portion of the clamp lever, and a pair of engagement grooves formed on the inner surface side portion of the pair of side walls of the detachable spacer By introducing the pair of support pins respectively, the detachable spacer can be attached to and detached from the pressing portion of the clamp lever, so that the detachable spacer can be easily attached and detached.

  A pair of permanent magnets are mounted on the pair of side walls of the detachable spacer, respectively, and the pair of support pins are introduced into the pair of engaging grooves of the detachable spacer to mount the detachable spacer on the output portion of the clamp lever. In this state, the pair of side wall portions of the detachable spacer is configured to be adsorbed to the pair of pivot wall portions of the clamp lever in a surface contact manner, so that the detachable spacer can be easily and securely attached to the output portion of the clamp lever. The detachable spacer can be stably held so as not to rattle.

  By installing a detachable spacer, it is possible to easily add a spacer wall to the pressing surface of the output part of the clamp lever. However, the clamping device can be applied.

  According to the invention of claim 2, it differs from the invention of claim 1 in that a pair of permanent magnets are provided on a pair of pivot walls, but the effect of the pair of permanent magnets is claimed in claim 1. Therefore, the same effect as that of the invention of claim 1 can be obtained.

According to the invention of claim 3, the clamp body has a T-shaped leg portion having an inverted T-shaped cross section.
The inside of the T-slot can be slid in a state where the clamp body is engaged with the T-slot of the base member on which the clamp body is installed, and the positioning of the clamp device with respect to the end of the mold can be facilitated.

It is a disassembled perspective view of the clamp apparatus which concerns on Example 1 of this invention, and a detachable spacer. It is a perspective view of the state which attached the detachable spacer to the clamp device. It is a perspective view of a detachable spacer. It is a front view of a detachable spacer. It is a side view of a clamp device (clamp state). It is a front view of a clamp device (clamp state). It is a disassembled perspective view of the clamp apparatus which concerns on Example 2, and a detachable spacer.

  Hereinafter, the form for inventing is demonstrated based on an Example.

  In the clamping device according to the present embodiment, a clamp target (mold, workpiece, etc.) such as a mold or a workpiece is fixed to the upper surface of a base member (base, table, bolster, etc.). This is a lever-type clamp device configured to input a driving force of a pressure cylinder and press a clamp target with a pressing surface of an output portion on the other end side of the clamp lever.

  As shown in FIGS. 1 and 2, the clamp device 1 includes a clamp body 2 and a pair of pivot wall portions 12 of the clamp body 2 that are provided with a middle portion rotatably via a pivot pin 4. A lever 3 and a fluid pressure cylinder 8 formed of a hydraulic cylinder capable of driving the clamp lever 3 are provided. The driving force of the fluid pressure cylinder 8 is input to a driven portion 15 (input portion) at one end of the clamp lever 3. The clamping object 19 is pressed by the pressing surface 17 of the output portion 16 on the other end side of the clamp lever 3. In the present embodiment, the direction of arrow F is assumed to be the front, and the direction of arrow R is assumed to be the rear.

  The steel clamp body 2 is integrally formed with the base surface 10 supported by the upper surface 7 a of the base member 7, and protrudes downward from the base surface 10 to the clamp body 2. A T-shaped leg portion 11 that engages with the groove 7 b and a pair of left and right pivot wall portions 12 that are formed on the upper portion of the clamp body 2 and pivotally support the pivot pin 4 are provided. The pivot wall 12 is formed with a horizontal pivot pin hole 13 in the left-right direction.

  The T-shaped leg portion 11 has an inverted T-shaped longitudinal section when viewed from the front, is formed over the entire length of the center portion in the width direction of the clamp body 2, and is engaged with the T-groove 7 b of the base member 7. It is possible to move in the T groove 7b. The base surface 10 is formed in a horizontal plane on the left and right sides of the upper end portion of the T-shaped leg portion 11.

  As shown in FIGS. 1 to 6, the clamp lever 3 is a steel member elongated in the front-rear direction, and an output portion 16 that presses the clamp object 19 is formed at the front end of the clamp lever 3. A driven portion 15 that is clamped upward by the fluid pressure cylinder 8 is formed at the rear end portion, and a horizontal pin hole 18 is formed in the middle in the length direction of the clamp lever 3. By inserting the pivot pin 4 through the pin hole 18 and the pivot pin hole 13 of the pair of pivot walls 12, the clamp lever 3 is connected to the pair of pivot walls 12 via the pivot pin 4. It is pivotally attached so that it can swing.

  A pair of support pins 6 for supporting the middle part of the detachable spacer 5 are provided horizontally and projecting outward on the left and right sides of the vicinity of the lower end of the output part 16 of the clamp lever 3. The detachable spacer 5 is detachably attached to the output portion 16 of the clamp lever 3 via the pair of support pins 6 so that the spacer wall portion 22 can be added to the pressing surface 17 of the output portion 16. .

  The detachable spacer 5 has an inverted gate shape, and is a spacer that integrally couples a pair of side wall portions 20 that are separated so that the output portion 16 of the clamp lever 3 can be introduced, and lower end portions of these side wall portions 20. And a wall portion 22. A receiving groove 24 is formed between the pair of side wall portions 20 so that the lower end portion of the output portion 16 can be inserted with almost no gap. A pair of engaging grooves 21 into which the pair of support pins 6 can be respectively introduced are formed horizontally on the inner surface side portion of the pair of side wall portions 20 in the front-rear direction over the entire length.

  A pair of holes 20a is formed horizontally in the front-rear direction at the rear part of the vicinity of the lower end of the pair of side wall parts 20, and a pair of cylindrical permanent magnets 23 are fitted and attached to the holes 20a. It is adsorbed and fixed to the side wall portion 20 by magnetic force. The rear end surfaces of the pair of permanent magnets 23 are flush with the rear end surfaces of the pair of side wall portions 20, and the rear end surfaces of the pair of side wall portions 20 of the removable spacer 5 are attracted by the attraction force of the pair of permanent magnets 23. It is comprised so that it may adsorb | suck to the front-end surface of a pair of pivot wall part 12 in the surface contact form, respectively. Although the front-rear width of the detachable spacer 5 is not particularly limited, a front-rear width comparable to the front-rear width of the pressing surface 17 of the output unit 16 is desirable. As the permanent magnet 23, it is desirable to employ a strong magnet such as a neodymium magnet.

The operation and effect of the clamping device 1 described above will be described.
As shown in FIG. 2, the detachable spacer 5 is brought close to the front of the clamp body 2, and the pair of support pins 6 provided on the output portion 16 of the clamp lever 3 are set in the pair of engaging grooves 21 of the detachable spacer 5. Are engaged and introduced, the rear end surfaces of the pair of permanent magnets 23 fitted in the holes 20a of the removable spacer 5 and the rear end surfaces of the pair of side wall portions 20 form the clamp body 2 made of steel. The attachment / detachment spacer 5 is attached to the output portion 16 of the clamp lever 3 by adhering to the front end surfaces of the pair of pivotal wall portions 12 in a surface contact manner.

  When the detachable spacer 5 is mounted on the output portion 16 of the clamp lever 3, the front end surfaces of the pair of pivot wall portions 12 and the lower end surface of the spacer wall portion 22 of the detachable spacer 5 are substantially orthogonal. Therefore, even when the clamp lever 3 is driven to swing and the pressing surface 17 of the clamp lever 3 is inclined, the spacer wall portion 22 of the detachable spacer 5 can be maintained in a substantially horizontal state. It is possible to press the upper surface of the clamped object 19 over the entire lower end surface of the spacer wall portion 22 and to exert a clamping force as in the case where the detachable spacer 5 is not mounted.

  Furthermore, as shown in FIG. 6, there is a gap below the support pin 6 with the detachable spacer 5 attached to the output portion 16 of the clamp lever 3, so when clamping the clamp object 19, a pair of left and right Since no load is applied to the support pins 6, the pair of support pins 6 can be prevented from being damaged.

  When removing the detachable spacer 5 from the output portion 16 of the clamp lever 3, if the detachable spacer 5 is pulled horizontally in the forward state with the clamp state released, the adsorption by the permanent magnet 23 is released, and the output of the clamp lever 3 is released. The pair of support pins 6 provided in the portion 16 slide in the pair of engaging grooves 21 of the detachable spacer 5, and the pair of permanent magnets 23 of the detachable spacer 5 is paired with the pair of pivot wall portions 12. The detachable spacer 5 can be easily removed away from the front end surface.

  As shown in FIGS. 5 and 6, the clamp body 2 has a T-shaped leg portion 11 having an inverted T-shaped cross section, so that the T-groove is engaged with the T-groove 7 b of the base member 7 on which the clamp body 2 is installed. 7b can be slid, and the positioning of the clamping device 1 with respect to the end of the clamping object 19 can be facilitated.

  Since the clamping device 1A of the second embodiment is different from the clamping device 1 of the first embodiment only in the mounting part of the pair of permanent magnets 23A, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. Only different configurations will be described.

  As shown in FIG. 7, of the vicinity of the front end of the pair of pivot wall portions 12, the output portion 16 is attached to the detachable spacer 5 </ b> A and corresponds to the rear end surface of the pair of side wall portions 20 of the detachable spacer 5 </ b> A. A pair of permanent magnets 23 </ b> A is attached to the part to be operated. Therefore, in a state where the pair of support pins 6 are introduced into the pair of engaging grooves 21 and the detachable spacer 5A is attached to the output portion 16, the pair of side wall portions 20 is moved by the magnetic force of the pair of permanent magnets 23A. It is comprised so that it may adsorb | suck to the front-end surface of a pair of pivot wall part 12 in the surface contact form, respectively. When the clamp lever 3 is clamp-driven, the detachable spacer 5 </ b> A moves together with the output unit 16 toward the object to be clamped while the pair of side wall portions 20 is kept in the attracted state with the pair of pivot wall portions 12. The permanent magnet 23A is mounted in a mounting hole formed on the pivot wall 12 in the front-rear direction so that the front end is open, and the mounting state is maintained by magnetic force.

Next, an example in which the above embodiment is partially changed will be described.
(1) As the pair of permanent magnets 23 and 23A, cylindrical ones are adopted, but the magnets are not limited to this shape. Further, the permanent magnets 23 and 23A may be fixed with bolts or screws.

(2) In the clamp device 1, the case where a hydraulic cylinder is employed as the fluid pressure cylinder has been described as an example. However, the present invention can be similarly applied to a clamp device employing an air cylinder instead of the hydraulic cylinder. .
(3) Those skilled in the art can implement the present invention in various forms with various modifications without departing from the spirit of the present invention, and the present invention includes such modifications.

DESCRIPTION OF SYMBOLS 1,1A Clamp apparatus 2 Clamp main body 3 Clamp lever 4 Pivoting pin 5, 5A Detachable spacer 6 A pair of support pins 7 Base member 7b T groove 8 Fluid pressure cylinder 11 T-shaped leg part 15 Driven part 16 Output part 17 Press Surface 20 A pair of side walls 21 A pair of engaging grooves 22 Spacer walls 23, 23A A pair of permanent magnets

Claims (3)

A clamp body, a clamp lever mounted on a pair of pivot walls of the clamp body so that a middle portion thereof is rotatable via a pivot pin, and a hydraulic cylinder capable of driving the clamp lever. In the lever-type clamp device configured to input the driving force of the fluid pressure cylinder to one end of the lever and press the clamp target with the pressing surface of the output portion on the other end of the clamp lever.
An inverted gate-type attachment / detachment spacer that is detachably attached to the output portion and can be provided with a spacer wall on the pressing surface side of the output portion, and a middle portion of the attachment / detachment spacer that protrudes from both sides of the output portion. A pair of support pins that can be supported;
The removable spacer is
A pair of side walls spaced apart to allow introduction of the output;
A spacer wall portion integrally connecting the end portions of these side wall portions;
A pair of engagement grooves formed so that a pair of support pins can be respectively introduced into the inner surface side portion of the pair of side wall portions;
A pair of support pins are introduced into the pair of engaging grooves, and a pair of side wall portions are attracted to a pair of pivot wall portions in a surface contact state with a detachable spacer attached to the output portion of the clamp lever. As described above, a clamping device having a pair of permanent magnets respectively attached to a pair of side wall portions. A clamp body, a clamp lever mounted on a pair of pivot walls of the clamp body so that a middle portion thereof is rotatable via a pivot pin, and a hydraulic cylinder capable of driving the clamp lever. In the lever-type clamp device configured to input the driving force of the fluid pressure cylinder to one end of the lever and press the clamp target with the pressing surface of the output portion on the other end of the clamp lever.
An inverted gate-type attachment / detachment spacer that is detachably attached to the output portion and can be provided with a spacer wall on the pressing surface side of the output portion, and a middle portion of the attachment / detachment spacer that protrudes from both sides of the output portion. A pair of support pins that can be supported;
The removable spacer is
A pair of side walls spaced apart to allow introduction of the output;
A spacer wall portion integrally connecting the end portions of these side wall portions;
A pair of engaging grooves formed so that a pair of support pins can be respectively introduced into the inner surface side portion of the pair of side wall portions;
A pair of support pins are introduced into the pair of engaging grooves, and a pair of side wall portions are attracted to a pair of pivot wall portions in a surface contact state with a detachable spacer attached to the output portion of the clamp lever. As described above, a clamping device having a pair of permanent magnets respectively attached to a pair of pivot walls.   The clamp apparatus according to claim 1 or 2, wherein the clamp body has a T-shaped leg portion having an inverted T-section that is slidably engaged with a T groove of a base member on which the clamp body is installed. .