JPH0623723U - Mounting structure for positioning member in mold - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Positioning members are fixed to the fixed mold and the moving mold so that they can be attached and detached by the work from the mold-parting surface side. The positioning member can be removed, and the holes for each mold can be manually drilled to reduce the number of machining steps and reduce the cost of mold processing. [Constitution] On each parting surface of the fixed mold and the moving mold,
The bottomed holes 42 and 43 of the same central axis are provided, the socket member 52 having a pin receiving hole is fitted into the bottomed hole of one mold, and the socket member is screwed into the bottom surface of the pin receiving hole 521 to screw one metal. The plug member 53 having the pin 531 fixed to the mold and inserted into the pin receiving hole 521 is fitted into the bottomed hole of the other mold, and the plug member is screwed into the other mold on the tip end surface of the pin. Fixed

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for a positioning member in a mold used for incorporating a fixed mold and a movable mold into a molding device, for example, a mold clamping mechanism of an injection molding machine without misalignment.

[0002]

[Industrial applications]

 In the mold clamping mechanism part of the injection molding device, as shown in FIG. 2, the fixed mold 2'is attached to the fixed plate 1 ', and the sprue -21' of the fixed mold 2'is communicated with the nozzle a of the injection machine. A movable plate 8'is slidably supported by a guide shaft 11 'attached to a fixed plate 1', and a movable mold 3'is attached to the movable plate 8'through a spacer block 7 '.

In FIG. 2, 71 'is an extruding plate, and 72' is an extruding pin having one end supported by the extruding plate 71 'and the other end penetrating the movable mold 3'to face the inner surface b of the cavity. FIG. 2 shows the mold clamping state. When the resin is charged into the cavity by the injection machine c and cooling is completed, the movable mold 8 ′ is moved in the n direction by the operation of the hydraulic cylinder d, and the mold is The mold is released by being opened and the extrusion pin 72 'protruding from the inner surface b of the cavity.

In the above, it is necessary to incorporate the fixed mold 2 ′ and the movable mold 3 ′ into the mold clamping mechanism while aligning them with each other in order to prevent burrs from occurring and prevent early damage to the mold. .

Therefore, in the past, in order to prevent positional deviation between the molds when the molds were assembled, as shown in FIG. 3, the parts of the molds 2 ′ and 3 ′ were parted. Positioning member Fitting holes 42 ', 43' are machined on the surface, bolt through holes 620 ', 630' reaching the holes 42 ', 43' from the back of each mold 2 ', 3'are countersunk, and pin receiving A socket member 52 having a hole 521 'and a female screw hole 522' is fitted into a positioning member fitting hole 42 'of one mold 2'and the socket member 52' is fitted with a bolt 62 'from the back surface of the mold 2'. On the other hand, the plug member 53 'having the pin 531' and the female screw hole 532 'inserted into the above-mentioned pin receiving hole 521' is screwed into the positioning member fitting hole 43 'of the other mold 3'. Fit and screw the plug member 53 'from the backside of the mold 3'to the bolt 63'. It is known that the molds 2'and 3'are attached to the fixed plate 1'and the movable plate 8'with the molds 2'and 3'aligned by inserting the plug members 53 'into the socket members 52' (Fig. In 3, 7'is a spacer block).

[0006]

[Problems to be solved by the device]

 However, since the injection pressure is generally high, it is necessary to make the thickness of each mold considerably thick in order to cope with this high pressure. Especially in the case of a mold with a large projected area, the thickness of the mold must be increased. I won't.

However, in order to perform the drilling of the through bolt holes 620 ′ and 630 ′ in the mold having such a large thickness, it is necessary to rely on the machining, and the number of man-hours for machining the mold is large. As the number increases, the cost of the mold becomes higher.

Further, it is difficult to remove the positioning members 52 ′ and 53 ′ after mounting the molds 2 ′ and 3 ′, and the socket member side of the positioning member is clogged with foreign matter, resulting in mold clamping failure and burrs. Easy to do.

An object of the present invention is to fix a positioning member to a fixed mold and a moving mold so that they can be attached and detached by a work from the mold-parting surface side, and to fix the positioning member after mounting each mold. It is possible to remove the metal mold and also to perform the drilling process for each mold by hand, thereby reducing the number of machining processes and reducing the mold machining cost.

[0010]

[Means for Solving the Problems]

 The mounting structure of the positioning member in the mold of the present invention has a bottomed hole having the same central axis on each of the fixed mold and the moving mold, and a socket member having a pin receiving hole is used for one mold. Insert it into the bottomed hole of the mold, fix the socket member to one mold by screwing the bolt at the bottom of the pin receiving hole, and plug the plug member with the pin inserted into the pin receiving hole into the other mold. The structure is characterized in that the plug member is fitted in a bottomed hole, and the plug member is fixed to the other mold by screwing a bolt on the tip end surface of the pin.

[0011]

[Action]

 Since the positioning members of the socket member and the plug member are fixed to each mold by screwing the bolts from the molding surface side of the mold, each positioning member is fixed to each mold. After the molds are aligned with each other and mounted on the fixed plate and movable plate, each positioning member can be removed while maintaining this mounting state.

[0012] Furthermore, it is sufficient to form a female screw hole in each die, which enables fixing of each positioning member by screwing a bolt from the parting surface side, and it is not necessary to use the bolt hole as a through hole. Since the bolt hole depth can be made sufficiently shallow, it is possible to perform the hole drilling manually.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of the present invention.

In FIG. 1, 1 is a fixed plate, and 2 is a fixed mold, which is fixed to the fixed plate 1 by bolts (not shown) screwed from the fixed plate side. 3 is a moving mold.

Numerals 42 and 43 are positioning member fitting holes common to the central axes machined on the parting surfaces of both molds 2 and 3, and are bottomed holes. Reference numeral 52 denotes a socket member having a pin receiving hole 521 in the center and a counterbore 522 in the axial direction from the bottom surface of the hole. The socket member 52 is screwed into a bolt (hexagon socket head bolt) 62 in the counterboring hole 522. It is fixed to the fixed mold 1.

Reference numeral 53 denotes a plug member having a pin 531 in the center and a counterbore hole 532 in the axial direction from the tip end surface of the pin. The plug member 53 is bolted in this counterbore hole 532 (a hexagon socket head cap screw). It is fixed to the movable mold 3 by screwing 63.

Reference numeral 7 is a spacer block, and 8 is a moving plate. A bolt (not shown) in which the moving die 3 is screwed into the moving plate 8 from the moving plate 8 side through the spacer block 7 is provided. It is fixed.

In the above, the fixed mold 2 is attached to the fixed plate 1, the movable plate 8 is movably inserted through the guide shaft (see 11 ′ in FIG. 2) attached to the fixed plate 1, and then the fixed mold is attached. The movable mold 3 is aligned with the socket member 52 by inserting the plug member 53 into the socket member 52, and the movable mold 3 is attached to the movable plate 8 via the spacer block 7 while maintaining this aligned state. With this, the fixed mold 2 and the movable mold 3 can be installed in the mold clamping mechanism at the regular position without being displaced.

In the above embodiment, the socket member is fixed to the fixed mold and the plug member is fixed to the movable mold. However, the plug member is fixed to the fixed mold and the socket member is fixed to the movable mold. You can also do it.

[0020]

[Effect of device]

 The mounting structure of the positioning member in the mold of the present invention is as described above, and unlike the conventional bolt through hole, the positioning member is mounted on the molding surface of the mold, unlike the conventional bolt through hole. Therefore, it is only necessary to have a sufficient depth to fix each mold by screwing the bolt, and since the hole depth can be made sufficiently shallow, it becomes possible to perform the drilling work manually. Therefore, the number of man-hours for machining the die can be reduced accordingly, and the die machining cost can be reduced.

Further, since the positioning members are attached and detached from the parting surface side of the mold, each mold is attached to the fixed plate and the movable plate in a predetermined alignment state, and then the position is determined. The member can be easily removed and the injection molding machine can be operated, and the occurrence of burrs due to improper mold clamping when foreign matter is caught in the positioning socket member can be eliminated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a mold clamping mechanism portion of an injection molding machine.

FIG. 3 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 2 Fixed mold 3 Moving mold 42 Bottomed hole 43 Bottomed hole 52 Socket member 521 Pin receiving hole 53 Plug member 531 pin 62 Bolt 63 Bolt

Claims (1)

[Scope of utility model registration request] 1. A bottomed hole having the same central axis is provided on each of the parting surfaces of the fixed mold and the movable mold, and a socket member having a pin receiving hole is fitted into the bottomed hole of one mold. The socket member is fixed to one mold by screwing a bolt at the bottom surface of the pin receiving hole, and a plug member having a pin to be inserted into the pin receiving hole is fitted into a bottomed hole of the other mold, and the plug member is attached. A structure for mounting a positioning member in a mold, characterized in that the pin tip surface is fixed to the other mold by screwing a bolt.