KR910007989B1 - Mould clamping device for injection moulding machine - Google Patents

Abstract

The device suitable for a heavy-duty injection molding machine, has an adjusting plate (2), a moving plate (3), a fixed plate (4), which are mounted on a bed (1); a toggle link (5), a guide bar (6), an ejector plate (7) between (8a) of a cylinder (8) at the center of the link (5); a tie rod (10) on the plate (4) via (2) and (3); a safety rod mounted on the plate (3). The structural design of the device relating to the stress distribution, prevents safety accidents from the stress concentration or cracks on moving parts, reduces necessary energy from having hollow structure but enough stiffness and simplifies the assembly or disassembly with special clamping of the die and a moving plate.

Description

Molding Device of Injection Molding Machine

1 is a perspective view showing an appearance of a mold clamping device according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a partially cutaway perspective view showing an adjustment plate of the mold clamping device of the present invention.

4 is a cross-sectional view taken along the line B-B in FIG.

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

6 is an exploded perspective view showing a toggle lint of the present invention clamping device (Toggle Lind).

7 is a cross-sectional view taken along the line D-D of FIG.

8 is a cross-sectional view taken along the line E-E of FIG.

9 is a cross-sectional view showing a link connecting portion of FIG.

10 is an exploded perspective view showing a moving plate of the mold clamping device according to the present invention.

11 is a sectional view taken along the line F-F in FIG.

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

13 is a cross-sectional view taken along the line H-H in FIG.

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

FIG. 15 is a cross-sectional view taken along the line J-J of FIG. 10. FIG.

FIG. 16 is a partially cutaway exploded perspective view illustrating an assembly fixing method of a movable plate or a fixed plate and a mold in the mold clamping device according to the present invention.

* Explanation of symbols for main parts of the drawings

2: control plate 3: moving plate

3A, 3B, 21, 22 ': Sheet portion 3c, 3d, 22, 22': Reinforcement protrusion

3e: Shaft 3f, 3g: Fixed groove

3h: ejector pin hole 3i, 4c: opening

4: fixing plate 4a: injection hole

4b, 7a, 82: recessed groove 5: toggle link

6: guide bar 7: ejector plate

8: piston 8a, 89: piston rod

8b: screw portion 9: operating plate

9a, 9b: storage part 9c: support part

10: tie rod 23, 24: rod ball

25, 73, 86: Baogong 27: opening

31, 32, 33, 34: Fixed bracket 35, 36, 37, 38: A-link

39, 40, 41, 42: 1-character link 43, 44: Annular unit link

68, 69: shaft ball 70: center hole

71: shaft 72: fixed piece

74, 74 ', 101: Bush 75, 75', 91, 91 ': Cap

76: open groove 77, 96: retaining ring

78, 105, 105 ': fixing cap 83: space part

88: 90, 90 ', 93', 93 ', 104' and 104 ': slide bush

90a: Through hole 92: Oil hole

94: protective cap 95: o-ring

102: gear 103: dignity

The present invention relates to a mold clamping device in an injection molding machine, and more particularly to a structure of a mold clamping device suitable for a large capacity.

In general, injection molding machines are classified into direct pressure type and toggle type.

In the case of the direct pressure type, a conventional clamping motor or a servomotor is used for driving an injection molding machine, or sometimes hydraulic pressure is used as a driving force to obtain a clamping force or a dead power through a mechanical power transmission means. However, the problem with the direct pressure type is that it is very difficult to obtain a large clamping force or dead power due to the structural characteristics when applied to a large-capacity injection molding machine, and the hydraulic pressure used to obtain the above clamping force or dead power There is a problem that the cylinder becomes too large, and if it is operated continuously for a long time, the correct operation function may be deformed in the active part of the machine itself, and the application is not possible because it may adversely affect the quality of the injection product. There is a difficult difficulty.

It is well known that the toggle type has been frequently applied to a high-capacity injection molding machine in view of the fact that the toggle type can compensate for the problems in the high-capacity type described above. In such a conventional toggle type molding machine, a series of associative configurations such as a control plate, a movable plate, a fixed plate, a toggle link, a tie rod, and a guide bar may impede proper stress and smooth operation due to the distribution of forces generated during mold clamping or separation. If repeated operation is performed continuously for a long time, the entire composition is severely deformed or damaged, resulting in a bad phenomenon that degrades the quality of the injected product. Especially in the case of a large capacity, the components related to the adjusting plate, the moving plate, and the fixed plate are more than necessary. As a result of excessive weight, unnecessary load factors are added during operation, which leads to unnecessary waste of energy.

In addition, the combined configuration of the adjusting plate, movable plate and the fixed plate and the guide bar may cause stress concentration during operation due to geometric or installation structure problems, and if a long time elapses, a crack or crack may occur in the adjusting plate, the movable plate or the fixed plate. Problems such as the occurrence of defects, shortened service life, and even safety accidents due to breakage of these components are present.

The present invention has been made to solve the problems of the prior art as described above has the following object.

The first object of the present invention is to manufacture a series of associative components consisting of a control plate, a movable plate, a fixed plate, a toggle link, a tie rod and a guide bar as basic components of the mold clamping device in consideration of the force distribution or proper stress during operation. As a result, smooth operation can be achieved even during repeated mold clamping or separation for a long time, and even if it is operated repeatedly for a long time because the uniform force distribution or stress is maintained, the mold clamping can greatly extend the service life. To provide a device.

The second object of the present invention is to provide a mold clamping device that can minimize the unnecessary load factors during operation by making the structure of the adjusting plate, the movable plate and the fixed plate to have a sufficient structural strength while the interior is empty. It is.

It is a third object of the present invention to provide a mold clamping device which can be a high quality product without adversely affecting the quality of an injection product by allowing accurate operation even when the basic components are repeatedly operated for a long time.

A fourth object of the present invention is to provide a mold clamping device that can be quickly and easily disassembled by adopting a coupling method by a unique fastening assembly unlike the conventional fastening fixing method of the movable plate and the mold.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 and 2, the inventors of the present invention consist of an adjusting plate 2, a movable plate 3, and a fixed plate 4 positioned on an upper side of the bed 1. The piston rod of the drive cylinder 8, which is installed between the toggle link 5, the guide bar 6, and the ejector plate 7 and the toggle link 5, which is installed between the movable plate 3, It is provided on the upper side of the operating plate 9 fixed to the 8a), the tie rod 10 is installed on the fixed plate 4 via the adjusting plate 2 and the movable plate 3 and the movable plate 3 The safety rod 11 is made of a combination.

As shown in FIGS. 1 to 5, the adjustment plate 2 is provided with an outer circumference protruding from the front to fix the fixing brackets 31 and 32 of the toggle link 5 to be described later. Sheet portions 21 and 21 'are provided, respectively, reinforcement protrusions 22 and 22' are integrally formed on both sides, and the adjusting plate 2 is moved in the axial direction by the tie rods 10 on the corners. The rod hole 23 is formed so as to enable each of them, and at the same time, the rod hole 24 is formed so that the piston rod 8a of the driving cylinder 8 can reciprocate in the center thereof. On both sides, the lower bar bar 25 is formed symmetrically up and down about the rod hole 24 to allow the guide bar 6 to reciprocate, respectively, the sheet portions 21 and 21 A hollow space 26 is formed inside the rod hole, and the rod hole 23, the rod hole 24, and the bar hole 25 are formed regularly. A plurality of openings 27 are formed to form a reinforcing piece between the openings 27, and a gear case 28 and a protective cap for accommodating the tie rod 10 on the back of the adjustment plate 2; A protective cap 29 'for accommodating the guide bar 6 having 29 and one protruding end 6a is installed, and a driving cylinder 8 is fixedly installed at the center, and the tie rod 10 is a rod. It is fitted in the ball 23, but one end is fixed to the bushing 101 and the gear 102 and the gear 102 is fixed to the worm 103, while the guide bar 6 is a bar ball (25) It is fitted in the slide bush (104, 104 ') on the inside, the fixing cap 105, 105' on both sides is made of fastening and fastening.

Toggle link (5) and the operating plate (9) as shown in Figures 1, 2 and 6 to 9 are divided into upper and lower, respectively installed bar bar fixing brackets 31 32, 33, 34, A-link (35, 36) (37, 38), 1-way link (39, 40) (41, 42) and annular unit link (43) (44) It is made, but the annular unit link (43, 44) is one side is arranged in the A-link (39, 40) (41, 42), respectively, and the other side is formed in the upper, lower portion of the automatic plate (9), respectively.

The fixing brackets 31 and 32 are provided with fixing sheets on the rear surface and a plurality of fastening holes 31 'and 32' are formed on both sides of the fixing brackets 31 and 32 to the sheet portions 21 and 21 'of the adjusting plate 2 described above. Fastened and fixed, several fixed end unit 45 is made of a triangle, but between each fixed end unit 445, the reinforcing end 46 is formed integrally, and the reinforcement protrusions on both sides of the front end of each fixed end unit 45 Each formed shaft hole 47 is drilled, but the fixing groove 48 (the other side is not shown) is formed on both reinforcement protrusions to fit one end of the A-shaped links 39, 40, 41, 42 and the shaft 49. Then, the fixing piece 50 is inserted into the fixing groove 48 and the shaft can be fixed by fastening the bolt through the fastening hole.

The fixing brackets 33 and 34 are provided with fixing sheets on the rear surface, and a plurality of fastening holes 33 'and 34' are formed on both sides, and the fastening brackets 33 and 34 are fastened to the sheet portions 3a and 3b of the movable plate 3 to be described later. The fixed end unit 45 is made of a triangle, but the shaft hole 47 is formed in each of the front end of each fixed end unit 45 is formed with reinforcement protrusions on both sides of the one-way link (39, 41) (40, 42) One side of the) is fitted and the shaft fixing can be made like the above-described fixing bracket (31,32).

At this time, the fixing bracket 32 is the same as the form turned upside down by changing the fixing bracket 31 up and down, and the fixing bracket 34 is the same as the form turned upside down by changing the fixing bracket 33 up and down.

A-link (35, 36) is formed by a plurality of shaft holes 52, 53, 54 (55, 56, 57) formed by two reinforcing pieces 51 and integrally formed with reinforcement protrusions on both sides Although the fixing groove 58 is formed in the reinforcement protrusion of the shaft hole 54, the shaft 59 is inserted through the shaft holes 55 and 57 together with the annular unit link 43 to be described later, and the fixing piece 60 is formed. ) Is inserted into the fixing groove 58, the shaft can be fixed by fastening the bolt through the fastening hole and the shaft holes 52 and 55 are fixed bracket 31 and the shaft holes 53 and 56 are one-shaped. It is rotatably arranged with the links 39 and 41, respectively. A-shaped links 37 and 38 have the same shape as the A-shaped links 35 and 36 described above, and A-shaped links 37 and 38 are fixed brackets 32, 1-shaped links 40 and 42, and annular unit links. It is housed with 44.

The one-way link (39, 40) is made of a unit having a shaft hole (61, 62) having reinforcement protrusions on both sides is formed integrally by the reinforcement piece 63, but the fixing grooves (64, 65) are respectively And both sides are formed in the shaft hole 53 of the A-shaped links 35 and 37 and the shaft hole 47 of the fixing brackets 33 and 34, respectively. 40) similar form, except that the number of units is small and the one-way link (41,421) is also the hole (5,6) of the a-link (36,38) and the hole (47) of the fixing bracket (33,34) Are built on each.

The annular unit link 43 is formed by forming up and down shaft holes 66 and 66 'having reinforcement protrusions at both sides, and the annular unit link 44 also has shaft holes 67 and 67' as the same shape. The shaft holes 66 and 67 of one side are constructed between the shaft holes 54 and 57 and 54 and 57 of the A-links 35 and 36 and 37 and 38, and the other shaft holes 66 'and 67' are formed. The upper and lower parts of the operating plate 9 are respectively arranged.

The operating plate 9 is divided into a plurality of units for accumulating the annular unit links 43 and 44, and the accumulating parts 9a and 9b formed with shaft holes 68 and 69 are located on the upper and lower parts, and guide bars on both sides. The support portion (9c) made to reciprocate along the outer periphery of (6) is formed in a diagonal direction up and down, and the center hole 70 for supporting and fixing the piston rod (8a) is formed in the center, In the upper and lower shaft holes 68 and 69, annular unit links 43 and 44 are formed by the shaft 71 (the lower part is not shown for convenience), and the shaft 71 is fastened by the fixing piece 72. It is fixed, a bar hole (73) is formed on the inner side of the support (9c), the slide bush (74, 74 ') is sandwiched between the guide bar (6) and the bar hole (73), caps (75, 75') on both sides ) Are fastened and fastened to each other, and an opening groove 76 is provided at one side of the central hole 70 so that the end of the piston rod 8 having the threaded portion 8b is fitted with a step, and the opening groove 76 is fitted. The fixing ring 77 and the fixing cap 78 and the thread formed in the inner thread is fixed to each other and the fixing ring 77 and the fixing cap 78 is a bolt fastening is made.

In addition, as described above, the fixed brackets 31, 32, 33, 34, A-shaped links 35, 36, 37, 38, single-shaped links 39, 40, 51, 42, annular unit links 43, 44) in the mutually accumulating portions of the operating plate 9 and the fixing brackets 31 and 32 and the a-links 35, 36, 37 and 38, and the shaft holes as shown in FIG. 52 and 55, the slide bush (79) is fitted and the shaft (49) is fitted in each of the shaft hole 47 and the slide bush (79), the fixing piece (50) is inserted into the fixing groove formed in the reinforcement protrusions on both sides. U-bolt (35, 36, 37, 38), single-shaped link (39, 40, 41, 42) and ring unit link Only 43 and 44 are movable, and other snowfalls are laid in the same way.

Next, the movable plate 3 and the ejector plate 7 shown in FIGS. 1, 2 and 10 to 15 will be described.

Movable plate 3 has one side of the upper, lower, left, and right side protruding to form sheet portions 3a and 3b for fixing the fixing brackets 33 and 34 of the toggle link 5 described above. Are respectively provided and the reinforcement protrusions 3c and 3d are integrally formed at both sides, and the shaft holes 3e are respectively formed to allow the movable plate 3 to move in the axial direction by riding the tie rod 10 at the corners. At the same time, the fixing groove 3f for fixing the ends of the piston rod 89 of the ejector cylinders 84 and 85 which will be described later on the left and right sides of the center and the fixing groove 3g for fixing the ends of the guide bar 6. While the upper and lower parts are formed symmetrically, a plurality of ejector pin holes (3h) are formed in the center portion, but a plurality of fastening holes (80, 81) are formed in the sheet portions (3a, 3b) and the fixing groove (3f). , 3g) has an end portion formed on the inner side thereof, and a plurality of fastening holes are formed at the end portion thereof, and the upper, lower, left and right outer peripheral sides of the movable plate 3 The ball 3i is formed and the safety rod 11 is screwed and fixed to the upper portion, and a plurality of grooves 82 having a "凸" cross-sectional shape are formed on the rear in the vertical and horizontal directions, The space portion 83 with the recessed portion is formed.

The ejector plate 7 is fastened and fastened to the ejector cylinders 84 and 85 on both sides, and the bar holes 86 are formed on the outer upper and lower portions of the ejector cylinders 84 and 85 symmetrically with the upper and lower parts of the guide bar. (, 6,6) is passed through, the groove portion (7a) is located on one side up and down, while the other ejector pin (87) is made of screwed together, the ejector cylinder (84,85) is stepped Is inserted into the recessed portion 88 is fixed by the bolt fastening method and the piston rod 89 is capable of reciprocating through the through hole (90a), the guide bars (6,6) of the bar hole (86) It is inserted through the slide bush (90, 90 ') fitted to the inside, and the oil leakage prevention caps (91, 91') at both ends of the bar hole (86) is fastened and fixed by bolting at the same time the bar hole (86) At the top of the oil hole 92 is formed.

At this time, the tie rod 10 is fitted in the shaft hole (3e) formed in the movable plate 3, as shown in Figure 11, the slide bush (93, 93 ') between the shaft hole (3e) and the tie rod 10 Respectively fitted, one side of the shaft hole (3e), the protective cap 94 is bolted and fixed, the other side is fitted with the 0 ring 95 and the fixing ring 96 is fitted. In addition, grooves 6a and 89a are formed at the ends of the guide bars 6 and 6 and the piston rods 89 of the ejector cylinders 84 and 85, respectively, and semicircular grooves 97a, 98a, 99a and 100a are formed at the center thereof. Semi-cylindrical fasteners 97, 98, 99, and 100 formed on the inner side and having a plurality of fastening holes are formed on the front side, and a pair of fasteners 97, 98, 99, 100 are disposed on the upper and lower portions of the recessed portions 6a and 89a. The guide bar (6) and the piston rod (89) are fixed to the movable (3) by engaging and fitting into the above-mentioned fixing grooves (3g, 3f), respectively, and then tightened with bolts.

In the mold normally installed on the rear surface of the movable plate 3, its installation structure will be described.

As shown in Figs. 1, 15 and 16, the head 106a of the bolt 106 having a quadrangular head is usually inserted into the groove portion 82 having a “凸” -shaped cross-sectional shape. It is positioned in accordance with the position of the fastening hole 107a formed in the mold 107 and inserted through the fastening hole 107a, and then fastened and fixed with a nut 108. At this time, the number or position of the fastening bolt may vary depending on the number of the fastening holes 107a formed in the mold 107 or the position thereof, but in the case of the movable plate 3 of the present invention, the vertical recess 8a and the horizontal yaw It is possible to form a plurality of grooves 82b so that the bolt 106 can be inserted into the grooves 82 at an appropriate position in an appropriate number, and the mold 107 can be fixed.

As shown in FIGS. 1, 2 and 16, the fixing plate 4 can be fastened and fixed to the upper part of the bed 1, and the injection inlet 4a is centered in the same manner as the conventional fixing plate. Is formed, but the fixing plate 4 of the present invention forms a plurality of grooves (4b) on the outer periphery of the injection inlet (4a) and form a reinforcing piece between each of the grooves (4b) corners The end of the tie rod 11 is screwed and fixed, and a plurality of openings 4C are formed on the upper, lower, left, right, and outer circumferential sides, and at the same time, the front is vertical as the rear part of the movable plate 3 described above. And a plurality of grooves 82 having a "凸" cross-sectional shape in the horizontal direction, respectively, while the safety rod 11 is slidably fitted thereon.

In addition, since the installation structure of the mold installed on the front surface of the fixed plate 4 has the same structure as the installation structure of the mold installed on the rear surface of the movable plate 3 described above, a detailed description thereof will be omitted.

As shown in FIGS. 1 to 4, the tie rod 10 has threaded portions 10a and 10b formed at both ends thereof, and grooves 10c and 10d are formed adjacent to the threaded portions 10a and 10b. A separate recess 100e is formed between both recesses 10c and 10d.

At this time, the both grooves (10c, 10d) and the recessed portion (10e) is applied to the tie rod 10 with the force on the adjusting plate (2) and the fixed plate (4) when the movable plate (3) described above reciprocating In accordance with the repetitive force while absorbing the stretching relationship of the tie rod 10 itself, it is possible to prevent the breakage of the tie rod 10 by reducing the impact.

Next, the operation and effects of the present invention clamping device will be described. First, the desired predetermined molds 107, which are usually in pairs, are fixed to the movable plate 3 and the fixed plate 4 with the bolts 106 and the nuts 108, respectively, according to the above-described installation method, and the driving cylinder ( When the 8 is operated, the operating plate 9 fixed to the end of the piston rod 8a is also reciprocated according to the reciprocating motion of the piston rod 8a. The movable plate 3 also has a bed (1) in accordance with the mutual link movement of the type unit link (43) (44), the single link (39, 40, 41, 42) and the A-link (35, 36, 37, 38). The reciprocating motion together.

At this time, the operating plate 9 performs a reciprocating motion while sliding along the guide bar 6 and the movable plate 3 performs a reciprocating motion while sliding along the tie rod 10.

The ejector plate 7 is reciprocated according to the operation of the ejector cylinders 84 and 85. When the ejector cylinders 84 and 85 operate, the piston rod 89 is fixed to the movable plate 3 so that the ejector A plurality of ejector pins 87 enter and exit the mold 107 through the pin hole 3h of the movable plate 3 while the plate 7 performs the reciprocating motion with the guide bar 6. A process of extracting a product to be molded therein is performed.

In addition, when the movable plate 3 reciprocates, the guide bar 6 is reciprocated in the protective cap 29 'through the rod hole 23 of the adjusting plate 2 since one side of the guide bar 6 is fixed to the movable plate 3. Will exercise.

Accordingly, the mold clamping device of the present invention having a series of associated configurations consisting of the adjusting plate 2, the movable plate 3, the toggle link 5, the tie rod 10, the guide bar 6, and the like has the following excellent effects. Has

In the case of the adjusting plate 2, the reinforcement protrusions 22 and 22 'are formed, and the bar hole 25 is symmetrically formed up and down, and the interior of the empty space 26 is formed. Regularly symmetrical is made in the form of reinforcing pieces between each other, in the case of the movable plate (3) reinforcement protrusions (3c, 3d) is formed and a plurality of openings (3i) is formed on the outer periphery, fixed groove (35) The upper and lower parts are symmetrically formed and at the same time, a space portion 83 is formed inside, and in the case of the fixed plate 4, a plurality of recesses 4b are formed, and the recesses 4b are reinforced with each other. A plurality of openings (4c) is formed on the outer circumferential side at the same time, in the case of the toggle link (5) fixed brackets (31,32) (33,34), a-link (35,36) (37,38), single ring (39,40) (41,42) and annular unit link (43) (44) are linking structure by unique construction On the other hand, in the case of the ejector plate 7, the recess 7A is formed at one side, and the bar hole 86 is formed symmetrically with each other up and down, and in the case of the operating plate 9, a plurality of units The snow shafts 68a and 69b are formed in the upper and lower parts, and the support parts 9c are formed in the upper and lower diagonal directions, and in the case of the guide bar 6, the adjusting plate ( Fixing groove of the movable plate 3 through the bar hole 25 of 2), the bar hole 73 located in the support part 9c of the operating plate 9, and the bar hole 86 of the ejector plate 7; A series of components fixedly installed at 3f and passing through the rod hole 23 of the adjustment plate 2 and the shaft hole 3e of the movable plate 3 in the case of the tie rod 10 to be fixed to the fixed plate 4. Since the control plate (2), the movable plate (3), the fixed plate (4) can greatly improve the sensitivity while minimizing its weight, and in particular, the guide bar (6) is installed in up-down symmetry. In terms of furnace strength and durability, it can have an innovative synergistic effect that can not be compared with the case of horizontal installation as in the prior art, and the shaft is fixed by the fixing pieces (50, 60, 72) in the form of a plurality of units ( Toggling 5, which is linked to 49,59,71 (some not shown), has sufficient strength with sufficient reciprocation of the movable plate 3 and sufficient transmission of the pressing force.

In the structure in which the mold is provided on the rear surface of the movable plate 3 and the front surface of the fixed plate 4, the recessed portion 82 and the quadrilateral head portion formed of a plurality of vertical recessed portions 82a and horizontal recessed portions 82b are provided. By adopting the assembly method of the bolt 106 and the nut 108 having the 106a), it is possible to select appropriately according to the number or position of the fastening holes to be formed of the mold, so that the assembly can be quickly and firmly assembled and separated from each other.

In the case of the tie rod 10, the grooves 10c and 10d and the grooves 10e are formed to have the expansion and contraction margin of the tie rod 10 even when excessive force is applied to the tie rod 10 during operation. As a result, it is possible to prevent breakage of itself with sufficient absorption effect against instantaneous impact or other factors.

Claims (6)

In the toggle type mold clamping device of an injection molding machine in which a movable plate is installed between the adjusting plate and the fixed plate, the adjusting plate 2 is formed with the upper and lower sheet portions 21, 22 'and the reinforcing protrusions 22, 22' integrally formed and loaded. The ball 23, the rod ball 24 and the bar ball 25 is formed, the space 26 is formed in the sheet portion (21, 21 ') and the rod hole (23, 24) and A plurality of openings 27 are formed between the bar holes 25, and the rod hole 23 is fitted with a tyrodo 10, and is fixed to the bush 101 and the gear 102 at one end thereof. The gear 102 is fixed to the worm 103, while the rod hole 24 and the piston rod 8a of the drive cylinder 8 are reciprocated, and the bar hole 25 and the guide bar 6 are fixed. The inner side of the slide bush (104, 104 ') and the fixing caps (105, 105') of both sides are installed, the movable plate (3) is the upper and lower sheet portions (3a, 3b) and reinforcement protrusions (3c, 3d) ) Formed integrally The high shaft hole (3e), the fixing groove (3f, 3g), a plurality of ejector pin hole (3h) and the opening 3i of the outer peripheral side is provided, the fixing groove (3f, 3g) is formed with an end on the inner side At the end, a plurality of fastening holes are formed, and at the back, a plurality of concave portions 82 having a "엔" cross-sectional shape are formed at the same time, and a space portion 83 having a plurality of concave portions is formed at the inner side, and the shaft hole 3e is a tie rod ( 10) The slide bush (93, 93 ') is fitted, but the protective cap 94 on one side of the shaft hole (3e) is made of the 0 ring 95 and the fixing ring 96 is installed on the other side, the fixed plate (4) Is formed in the outer periphery of the injection inlet (4a) a plurality of grooves (4b) and forms a reinforcing piece form between each of the grooves (4b) and a plurality of openings (4c) on the outer peripheral side and at the front "凸 "cross-sectional groove portion 82 is formed, while the toggle link 5 is fixed brackets 31, 32 (33, 34), a-shaped link (35, 36) (37, 38) 1 on both sides 1 Zarlink (39,40) (41,42) The annular unit links 43 and 44 are formed to be laid out from each other, but the annular unit links 43 and 44 are formed on the L-shaped links 39 and 40 on one side and the other side of the operation plate. At the same time, the ejector plate 7 fastens the ejector cylinders 84 and 85 on both sides, and the bar holes 86 and the concave portion 7a are formed on both sides, and the ejector cylinders 84, 85 is fitted to the stepped recessed portion 88 and the piston rod 89 is capable of reciprocating through the through hole 90a, while the guide bars 6 and 6 are provided in the bar hole 86. Is inserted through the slide bush (90, 90 '), the oil leakage preventing caps (91, 91') are fastened and fixed at both ends of the bar hole (86), the oil hole 92 is formed at the top The operating plate 9 is divided into a plurality of units in the upper and lower parts, and the storage parts 9a and 9b in which the shaft holes 68 and 69 are formed, the support part 9c in which the bar holes 73 on both sides are formed, and Deep hole 70 is provided, the upper and lower shaft holes (68, 69) in the ring-shaped unit links (43, 44) are formed by the shaft 71 and the shaft 71 is fastened by the fixing piece (72) The bar hole (73) and the guide bar (6) is fitted to the slide bush (74, 74 '), while the caps (75, 57') are fastened and fixed at both sides, and the open red (76) is provided The end of the piston rod 8a having the threaded portion 8b formed in the center hole 70 is fitted, and the fixing ring 77 and the fixing cap 78 are screwed and fixed to the opening groove 76. ) And the fixing cap 78 is fastened and fastened to the guide bar (6) is a bar hole (73) and ejector plate located in the bar hole 25 of the adjustment plate (2), the support portion (9c) of the operating plate (9) The rod hole 23 and the movable plate of the adjusting plate 2 are fixedly installed in the fixing recess 3f of the movable plate 3 through the bar hole 86 of the movable plate 3. Pass through the shaft hole 3e of 3) and fix it to the fixing plate 4 A mold clamping device of an injection molding machine, characterized in that the sum is fixed. The fixing brackets 31 and 32 of claim 1, wherein the fixing brackets 31 and 32 are provided with fixing sheets on the rear surface and a plurality of fastening holes 31 'and 32' are formed on both sides of the fixing brackets 31 and 32. ') Reinforcement end 46 is integrally formed between several fixed end units 45, and shaft holes 47 formed with reinforcement protrusions are formed on both sides of the front end, and fixing recesses 48 are formed at both reinforcement protrusions. The shaft is fixed by one side end of the A-link (39, 40, 41, 42) and the shaft 49 and the fixing piece 50, the fixing bracket (33, 34) is a fixing sheet on the back And a plurality of fastening holes 33 'and 34' are formed at both sides to be fastened and fixed to the sheet portions 3a and 3b of the movable plate 3, and shaft holes 47 each having reinforcement protrusions are drilled at both ends of the front end. The one-side link (39, 41) (40, 42) of the one side and the shaft can be fixed, the a-link (35, 36) is formed integrally by the reinforcing piece 51 and on both sides A plurality of shaft holes (52, 53, 54) (55, 56, 57) formed by reinforcing protrusions are formed, respectively, but the fixing grooves (58) are formed in the reinforcement protrusions of the shaft hole (54) to form an annular unit link (43). The shaft is fixed by the shaft 59 and the fixing piece 60, and the fixing bracket 31 and the shaft holes 53 and 56 are arranged with the single-shaped links 39 and 41, respectively. A-shaped link (37, 38) is the same shape as the A-shaped link (35, 36) is made to be fixed with the fixed bracket 32, one-way link (40, 42) and the annular unit link 44, and at the same time Link 39, 40 is a unit having a shaft hole (61, 62) formed with reinforcement protrusions on both sides is made integrally by the reinforcing piece (63) and a r-link (35, 37) and the fixing bracket (33, 34) The one-way link (41,42) is laid in a similar form to the one-way link (39,40), and differs only in the number of units and is built up with the A-link (36,38) and the fixing bracket (33,34), respectively Meanwhile, annular uni The link 43 has shaft holes 66 and 66 'having reinforcement protrusions formed on both sides thereof, and is formed up and down. The annular unit link 44 has the same shape as that of the annular unit link 43. 67 '), with one shaft hole 66,67 being constructed between the shaft holes 54,57 and 54,57 of the a-link 35,36 (37,38) and the other shaft hole 66'. , 67 ') is formed in the upper and lower parts of the operating plate (9), respectively, the mold clamping device of the injection molding machine. 2. The groove portion 82 of the cross section of the movable plate 3 and the groove portion 82 of the cross section of the fixed plate 4 are formed of a plurality of vertical groove portions 82a. It consists of a horizontal groove portion (82b), the bolt 106 having a quadrilateral head (106a) is inserted into the groove portion 82 and the bolt 106 is inserted into the fastening hole (107a) of the mold 107 The mold clamping device of the injection molding machine, characterized in that the nut 108 can be fastened and fixed. The grooves 6a and 89a of the guide bar 6 and the piston rods 89 of the ejector cylinders 84 and 85 are respectively formed, and the semicircular grooves 97a, 98a, 99a and 100a are formed in the center. ) Is formed, the inner side is empty, and a plurality of fasteners 97, 98, 99, 100 having a plurality of fastening holes are formed on the front side, and the pair of fasteners 97, 98, 99, 100 is disposed on the recesses 6a, 89a. It is made so that the guide bar (6) and the piston rod (89) to the movable plate (3) by coupling to and fitted into the fixing grooves (3g, 3f) of the movable plate (3), respectively, and then fastened and fixed. A mold clamping device for an injection molding machine. 2. The tie rod 10 has threaded portions 10a, 10b formed at both ends thereof, and recessed portions 10c, 10d are formed adjacent to the threaded portions 10a, 10b, and both recessed portions 10c, 10d are formed. The mold clamping device of the injection molding machine, characterized in that a separate recess (10e) is formed between. 2. The fixing hole of the bar hole 25 of the adjusting plate 2, the bar hole 73 of the operating plate 9, the bar hole 86 of the ejector plate 7, and the movable plate 3, 3g) is formed in the up and down symmetry, the mold clamping device of the injection molding machine.

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