JPH0614978Y2 - Mold clamp - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a mold clamp that facilitates a mold mounting work quickly and easily. When a plastic is injection-molded, compression-molded or transfer-molded, the mold of the product to be manufactured must be attached to the main body of the molding machine.

[Prior art]

For this reason, the upper, lower, left and right parts of the die are fixed with die clamps. As shown in FIG. 11, the conventional mold clamp has a Matsuba A
It is made up of a hammer B and a bolt C, and two split molds are attached so as to face each other. There are two locations, four on the top, bottom, left and right, for a total of eight locations. Eleventh is a schematic plan view of a die mounting portion of an injection molding machine or the like as seen from above. The bolt C, which has passed through the matsuba A, is screwed onto the mounting seat D of the molding machine. Mold E has a vertical mold mounting plate F at the front and rear ends.
Is provided, and this peripheral edge is pressed by a mold clamp. 12thly, the perspective view of Matsuba A is shown. This is an elongated block having a long groove G formed therein, through which a bolt C is inserted. However, such a mold clamp requires a long mounting time and is inefficient. In addition, depending on the thickness of the mold mounting plate F, it is necessary to mount a caster having a different wall thickness. There must always be a variety of beetles. In order to solve such a difficulty, the present applicant has devised a mold clamp that is convenient for attachment and detachment and does not need to prepare a large number of blades. It is the actual public Sho 58-54990 (S58.12.15). This is a diversified pine wood material having a stepped portion, a rectangular parallelepiped shaving material having long sides P and short sides Q on its side surfaces, and a connecting metal fitting having a long hole for rotatably connecting the shavings material and the sardine wood material. , The pressing plate that holds the mataba material and the tightening bolts that are loosely fitted in the bolt through holes of the pressing plate and that attach the pressing plate to the mold mounting board. This has the advantage that the mold can be installed and removed quickly, and it is safe and does not require a lot of staking.

[Problems to be solved by the device]

In Japanese Utility Model Publication No. 58-54990, the Matsuba wood was composed of three members. Two parallel gripping pieces and a spacer piece connecting these at the rear end. The parallel gripping piece and the spacer piece were integrated by welding. In the case of welding, the parallel gripping pieces may not be parallel due to thermal strain. Welding work itself requires technology and equipment,
This is a time-consuming task. Also, a long rivet penetrated the rear end of the pinewood material. Further, a set screw was screwed into the bezel material by being screwed into the screw hole. The rivet and the set screw are members to which the spring end is fitted and which are loosely inserted into the elongated holes of the connecting fitting. However, there are the following difficulties in passing a long rivet to the left and right so that the rivets are projected evenly at both ends. A long hole must be drilled through the rear end of the pinewood to allow the long rivet to pass through. This is a time consuming task. After making the hole, the rivet is inserted, but the end of the part that has passed through the hole must be caulked and expanded. The left and right protruding lengths of the rivets must be the same when unfolded. Further, a screw hole is drilled in the beak material and a screw is screwed into the screw hole. In this way it is not necessary to drill long holes. But,
It is necessary to drill the female screw holes and screw in the screws.
This is also a relatively time-consuming task. It is an object of the present invention to provide a mold clamp that can be manufactured in a short working time without welding work.

[Means for Solving the Problems]

In the mold clamp of the present invention, the pine nut material is connected by press-fitting both ends of the spacer piece into the holes of the two parallel gripping pieces. Instead of penetrating a longer rivet to the left or right or screwing a screw into a screw hole, a short rivet is press-fitted into a smooth short hole to fix the rivet to a pine wood or a beetle. It will be described with reference to the drawings. 1 is an exploded perspective view of a mold clamp of the present invention, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a sectional view taken along line IV-IV in FIG. The mold clamp 1 of the present invention has two rod-shaped parallel gripping pieces 8 having a step portion 12 at one end and a stopper hole 14 at the rear end, and a lowt 10 which is provided with a riveting hole 15 in the longitudinal direction. A spacer piece 9 that connects the parallel gripping sides 8 in parallel by holding the small diameter insertion portion 13 at both ends and inserting the insertion portion 13 into the stop hole 14, and a rectangular side surface composed of the long side P and the short side Q. A rectangular parallelepiped machining material 3 having a revetted hole 18 on both sides is engraved, and a lowt 17 is engraved. The rivets 19 inserted into the rivet holes 18 on both sides of the beveled castor material 3, the springs 7 for elastically coupling the rivets 16 and the rivets 19 on both sides, and the rivets 16 of the spacer piece 9 having the slot 21. 3 of beetle A connecting metal fitting 6 for rotatably connecting the sill material to the spacer piece by passing the rivet 19 through the long hole 21.
A plate-shaped pressing plate 4 having a bolt through hole 22 for pressing the parallel gripping piece 8, and a tightening bolt 5 which is inserted into the bolt through hole 22 of the pressing plate 4 to attach the pressing plate to the mold mounting plate, It is more important than that.

[Action]

Figure 10 shows the mounting procedure. The tightening bolt 5 passed through the bolt through hole 22 of the retainer plate 4 is screwed to the die mounting portion of the molding machine. The sill material 3 is appropriately rotated with respect to the pine nut material 2 to bring the mold clamp 1 into a state corresponding to the thickness of the mold mounting plate F of the mold. This means that the height of the back surface of the parallel gripping piece 8 is adjusted to the thickness of the die mounting plate. This will be explained later. Then, the parallel gripping piece 8 of the matoba material is passed under the pressing plate 4 so that the back surface of the parallel gripping piece 8 presses the mold mounting plate. Tighten the tightening bolt 5. The holding plate 4 holds down the pineapple material. The rear end of the pinewood material contacts the sill material and the front end contacts the mold mounting plate. The parallel gripping piece 8 is held parallel to the die mounting surface. It will be described how to adjust the height of the back surface of the parallel gripping piece 8 of the Matsuba material. An intuitive explanation will be given with reference to FIGS. The height of the step of the parallel gripping piece 8 is R. It is assumed that the side surface of the shavings is a rectangle having a long side P and a short side Q. The mold mounting plate F is pressed by the tips of the parallel gripping pieces 8 of the mataba material, but the distance X between the extension line of the bottom of the scabbard material and the tip of the parallel gripping pieces of the mataba material is equal to the thickness of the mounting plate. is necessary. You can use matsuba wood on both the front and back,
Any of the short sides can be brought into contact with the matba material and the die mounting surface. Therefore, X becomes the following five types. The states of (1) X = R + P (2) X = R + Q (3) X = P (4) X = Q (5) X = R (1) to (5) are shown in FIGS. FIG. 5 shows the mounting state when the mounting plate has the maximum thickness. The step portion 12 holds down the mounting plate F. The long-sided vertical side of the swordwood is used. In Fig. 6, the short side of the swordwood is used vertically. 7th
In FIGS. 8A and 8B, the mounting plate F is pressed by the back surface of the pine nut material.
In order to change the state of FIG. 5 and FIG. 6 to the state of FIG. 7 and FIG. In order to obtain the state shown in FIG. 7 to FIG. 8, the scorpion material 3 may be rotated 90 ° on the spot.

【Example】

A mold clamp according to an embodiment will be described with reference to FIGS. 1 to 4. The mold clamp 1 is composed of a generally U-shaped bristle material 2 with a front branch, a cuboid material 3 that is a rectangular parallelepiped member, a holding plate 4, a fastening bolt 5, and the like. The matba material 2 and the sill material 3 are connecting metal fittings 6 with long holes,
It is connected by the spring 7. The pine nut material 2 is formed by connecting two parallel gripping pieces 8 and 8 at a rear end with a spacer piece 9. Therefore, it has a U shape. It is characterized by the means of connection. A step portion 12 is provided at one end of the parallel gripping piece 8 of the pine nut material 2.
A wide stop hole 14 is formed at the other end. The spacer side 9 is a columnar member. Although it is cylindrical,
Both ends thereof are small-diameter insertion portions 13. Insert 13
Has a diameter substantially equal to the inner diameter of the stop hole 14 of the parallel gripping piece 8. Actually, the inner diameter of the stop hole is made slightly narrower than the diameter of the insertion portion 13. The length of the insertion portion 13 is substantially equal to the length of the stop hole 14. The surface of the insertion portion 13 is engraved with a lowlet, which is a collection of axially small grooves. A small riveting hole 16 is formed in the center of the end face of the insertion portion 13. In order to combine the spacer piece 9 and the parallel gripping piece 8, the insertion portion 13 of the spacer piece 9 is press-fitted into the stop hole 14 of the parallel gripping piece 8. Since the inner diameter of the stop hole 14 and the outer diameter of the insertion portion 13 are equal, when the insertion portion 13 is put into the stop hole 14 and strongly pressed, the insertion portion 13 enters the stop hole 14 and both are fixed. Because of the vertical (axial) loulette 10, the spacer piece 9 does not rotate with respect to the parallel gripping piece 8. Since it is press-fitted, it is easy to assemble. No complicated work such as welding is required. In this way, a roughly U-shaped matsuba material 2 is formed. Connect the pinewood material 2 and the sill material 3 to the metal fitting 6 and the spring 7.
And loosely connect. For this reason, the rivets 16 and 19 are fixed to both sides of the mandrel material 2 and both sides of the bezel material 3. The fixing mode of the rivet is also a feature of the present invention. Rivet holes 15 having an inner diameter slightly smaller than the outer diameter of the rivet 16 are formed in both end surfaces of the insertion portion 13 of the spacer piece 9. On a part of the surface of the rivet 16, a rowlet 17 which is a set of vertical fine grooves is engraved. When the tip of the rivet 16 is applied to the rivet hole 15 and the head of the rivet 16 is strongly pressed, the rivet 16 enters into the rivet hole 15. A strong frictional force is generated between these members. This alone prevents the rivet 16 from coming off.
There is no easy way out. Since the rivet hole 15 is not a through hole, it can be easily drilled. The same applies to the fixation of the bezel material 3 and the rivets 19. Rivet holes 18 having an inner diameter slightly smaller than the outer diameter of the rivet 19 are drilled in both end faces of the shaving material. The rivet 19 is a lowt 20 which is a collection of axially small grooves on its surface.
Is engraved. When the tip of the rivet 19 is applied to the rivet hole 18 and the head of the rivet 19 is strongly pressed, the rivet 19 enters into the rivet hole 18. As a result, the rivet 19 is fixed. Unlike the case of screwing, the installation is easy. Both ends of the spring 7 are locked to the rivets 16 and 19. The spring 7 attracts the sill material 3 to the pine nut material 2 to keep them together. With this, the mold clamp 1
Is easy to handle. The connecting fitting 6 is a thin and long fitting having a long hole 21 in the longitudinal direction. The rivets 16 and 19 are passed through the long holes 21. Since the long hole 21 has a sufficient length, the shaving material 3 can rotate around the rivet 19. The long side P of the bezel material 3 may contact the parallel gripping piece 8 and the short side Q may contact the parallel gripping piece 8. The holding plate 4 is a plate that holds the parallel gripping piece 8 of the pine nut material 2. There is a bolt through hole 22 in the center. Insert the tightening bolt 5 here. The tips of the tightening bolts 5 are screwed into the mold mounting portion of the molding machine in a predetermined case. Since the pineapple material 2 is U-shaped, an insertion hole 11 is formed in the middle. The tightening bolt 5 passes through here. Depending on the size of the tightening bolt, the insertion hole 11 expands, that is, the spacer piece 9
The length of the large diameter part of is different. In this example, the holding plate 4 is asymmetric with respect to the center of the bolt through hole 22. Therefore, as shown in FIG. 10, the holding plate is stationary in the vertical direction. It is easy to insert the pineapple material 2 from the side. However, the pressing plate 4 may be symmetrical with respect to the center of the bolt through hole 22. [Example 1] One example will be described. Length of long side of swordwood 35 mm Length of short side of swordwood 30 mm Height of step 10 mm Length of pine wood material 150 mm Width of pine wood material 61 mm Width of parallel support piece 20 mm Width of insertion hole 21 mm pine wood material In this case, P = 35mm, Q = 30mm, R = 10mm.
Values of X = 45, 40, 35, 30, 10 mm can be taken. [Example 2] Another example will be described. Length of long side of swordwood 25mm Short side of swordwood 20mm Height of step 10mm Length of pine wood 100mm Width of pinewood 46.5mm Width of parallel support piece 15mm Width of insertion hole 16.5mm In this case, P = 25mm, Q = 20mm, R = 10mm,
X = 35, 30, 25, 20, 10mm can be taken. [Example 3] A third example will be described. Length of long side of swordwood 25.2mm Length of short side of swordwood 20.2mm Height of step 10mm Length of pine wood 80mm Width of pinewood 30.5mm Width of parallel support piece 9mm Width of insertion hole 12.5 mm In this case, since P = 25.2 mm, Q = 20.2 mm and R = 10 mm, X = 35.2, 30.2, 25.2, 20.2 mm can be taken.

[Effect of device]

(1) The spacer piece and the parallel gripping piece are connected by press fitting instead of welding. Although it is somewhat difficult to finish the surface of the insertion portion 13 and the inner surface of the stopper hole 14, the assembly process is simple. Since no heat is applied, no distortion occurs. In the present invention, the parallel gripping pieces 8, 8 are precisely parallel. (2) Both the rivets 16 fixed to the mataba material and the rivets 19 fixed to the swordwood material are simply press-fitted into the rivet holes, so that the assembly is extremely simple. In the case of screwing, a male hole must be drilled and a male screw must be screwed in. This is not necessary in the present invention. (3) The thickness of the die mounting plate is often standardized and takes discrete values. For example, it is a discrete value such as 20mm, 25mm, 30mm, .... In the present invention, since the swordwood material having long and short sides and the pinewood material having the step portion are combined, it is possible to conveniently cope with discrete thickness differences. (4) The tightening bolt 5 can be left attached to the molding machine side without being completely removed. All you have to do is remove the pinewood from the side. Then the bolt 5 need only be loosened or tightened slightly. Work can be done quickly and easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a mold clamp of the present invention. FIG. 2 is a plan view of the mold clamp of the present invention. FIG. 3 is a front view of the mold clamp of the present invention. FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a schematic view showing a state in which a mold having the maximum thickness is mounted. FIG. 6 is a schematic view showing a state in which a die having the second thickness is attached. FIG. 7 is a schematic view showing a state in which the die having the third thickness is attached. FIG. 8 is a schematic view showing a state in which the die having the fourth thickness is attached. FIG. 9 is a schematic view showing a state in which a die having a fifth thickness is attached. FIG. 10 is an exploded perspective view showing a mounting procedure. FIG. 11 is a plan view of a mold attached state by a conventional mold clamp. FIG. 12 is a perspective view of a matsuba material of a conventional mold clamp. 1 …… Mold clamp 2 …… Matsuba material 3 …… Stick material 4 …… Holding plate 5 …… Tightening bolt 6 …… Coupling metal 7 …… Spring 8 …… Parallel gripping piece 9 …… Spacer piece 11 …… Insert hole 12 ... Step 13 ... Insert 14 ... Stop hole 15 ... Rivet hole 16 ... Rivet 17 ... Loret 18 ... Rivet hole 19 ... Rivet 20 ... Loret 21 ... Oblong hole 22 ... Bolt through hole

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped parallel gripping piece 8 having a step portion 12 at one end and a stop hole 14 at the rear end, and a knurled carved rivet hole 15 drilled in the longitudinal direction for a small diameter difference. A spacer piece 9 for connecting the parallel grasping pieces 8 in parallel by holding the inserting portions 13 at both ends and press-fitting the inserting portions 13 into the stop holes 14, and a rectangular side surface having long sides P and short sides Q. A rectangular parallelepiped chamfered material 3 having a rivet hole 18 in its surface, a rivet 16 engraved with knurls 17 and press-fitted into the rivet holes 15 on both sides of the spacer piece 9, and a knurled 20 engraved material. Rivet holes 18 on both sides of 3
The rivet 19 inserted into the rivet 16, the spring 7 elastically connecting the rivets 16 on both sides and the rivet 19, and the rivet 16 of the spacer piece 9 and the rivet 19 of the camel material 3 to the slot 21. A connecting fitting 6 for rotatably connecting the sill material to the spacer piece by passing it through, a plate-like pressing plate 4 having a bolt through hole 22 for pressing the parallel gripping piece 8, and a bolt through hole 22 for the pressing plate 4. A mold clamp, characterized in that it comprises a tightening bolt (5) that is inserted into the mold to attach the pressing plate to the mold mounting board.