CN215151379U

CN215151379U - Three-plate type sliding rail injection mold

Info

Publication number: CN215151379U
Application number: CN202121351583.4U
Authority: CN
Inventors: 李道文
Original assignee: Zhuhai Seikawa Products Co ltd
Current assignee: Zhuhai Seikawa Products Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-14
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a three board-like slide rail injection mold, including the deflector, guide bar and gangbar, first waist type groove and second waist type groove have been seted up to the deflector, the front template is provided with first reference column, back template is provided with the second reference column, first reference column is located first waist type inslot, the second reference column is located second waist type inslot, the axle shoulder head of guide bar can support and press the one end of keeping away from the runner plate at the front template, the pole portion of guide bar supports and presses on the first terminal surface of runner plate, advance the terminal surface that the runner plate was kept away from to the plywood and seted up the spacing groove, the gangbar is including the connecting rod that connects gradually, axle shoulder pole and head, the connecting rod is connected with the pole portion of guide bar, the axle shoulder pole runs through into the plywood and supports and press on the second terminal surface of runner plate, the head is located the spacing inslot, in the mould direction that opens and shuts, the height that highly is greater than the head of spacing groove. The slide rail injection mold has the advantages of accurate and stable work, convenient operation and maintenance, high production efficiency and long service life, and is suitable for production of large-size products.

Description

Three-plate type sliding rail injection mold

Technical Field

The utility model relates to an injection moulding production technical field especially relates to a three board-like slide rail injection mold.

Background

The slide rail injection mold is the biggest difference compared with the traditional guide post mold, and the slide rail injection mold does not need to use a guide post to guide a front mold and a rear mold to open and close the molds at correct positions. Therefore, the slide rail injection mold has the advantages of simple structure, short mold manufacturing period, small overall size of the mold, low development cost of the mold and the like compared with the traditional guide column mold.

However, the existing slide rail injection mold is basically a two-plate injection mold, and is only suitable for injection molding production of various medium and small products, and injection molding production of large-size products still needs to depend on the traditional guide post mold for injection molding production, so that the application range of the slide rail injection mold is limited, the slide rail injection mold is difficult to be widely used, and popularization and use are not facilitated.

Disclosure of Invention

The utility model aims at providing a three board-like slide rail injection mold who is applicable to jumbo size product production, accurate stable, the operation maintenance convenience of work, production efficiency height and long service life to widen slide rail injection mold's application range, the mould development cost is low moreover, and can shorten mould development cycle greatly.

In order to realize the main object of the utility model, the utility model provides a three-plate slide rail injection mold, which comprises a rear template, a front template, a runner plate and a rubber feeding plate which are arranged in sequence in the mold opening and closing direction, wherein the rubber feeding plate is provided with a first slide rail which extends in the mold opening and closing direction, the front template is provided with a first slide seat which is matched with the first slide rail in a sliding way, the front template is provided with a second slide rail which extends in the mold opening and closing direction, the rear template is provided with a second slide seat which is matched with the second slide rail in a sliding way, the three-plate slide rail injection mold also comprises a guide plate, a guide rod and a linkage rod, the guide plate is provided with a first waist-shaped groove and a second waist-shaped groove which are arranged side by side in the mold opening and closing direction and extend in the mold opening and closing direction, the front template is provided with a first positioning column, the rear template is provided with a second positioning column, the first positioning column is located in the first waist-shaped groove, the second positioning column is located in the second waist-shaped groove, the shaft shoulder head of the guide rod can be abutted against one end, far away from the runner plate, of the front template, the rod portion of the guide rod penetrates through the front template in the opening and closing mold direction and extends and abuts against the first end face, close to the front template, of the runner plate, the end face, far away from the runner plate, of the rubber plate is provided with a limiting groove, the linkage rod comprises connecting rods, the shaft shoulder rod and a head portion which are connected in sequence, the connecting rods penetrate through the runner plate and are connected with the rod portion of the guide rod, the shaft shoulder rod penetrates through the rubber plate and abuts against the second end face, close to the rubber plate, of the runner plate, the head portion is located in the limiting groove, and in the opening and closing mold direction, the height of the limiting groove is larger than that of the head portion.

According to the scheme, the front template can be movably supported on the first sliding rail in the mold opening and closing direction of the injection mold through the first sliding seat, so that the working accuracy and stability of the front template are improved. Simultaneously, the guider of the mould during operation that opens and shuts between preceding template and the back template is constituteed to second slide rail and second slide to reduce traditional mould because of setting up the volume that guide pillar guide pin bushing increased, slide rail injection mold's simple structure, the processing cost is low, and the die sinking efficiency is high, has shortened mould development cycle greatly, and improves the mould operating accuracy and the stability that opens and shuts of back template. Furthermore, the utility model relates to a three board-like slide rail injection mold is when opening the mould action on the mould direction that opens and shuts, and the template removes before the control back template moves the back mold core and keeps away from, and the second reference column on the back template slides in step at the second waist type inslot of deflector this moment. When the second positioning column on the rear template slides and abuts against one end, far away from the front template, of the second waist-shaped groove, the mold splitting action is completed between the rear mold core of the rear template and the front mold core of the front template, the water gap flow channel in the front template is separated from the injection product at the moment, then the rear template continuously keeps away from the front template to move along with the rear template, the rear template drives the guide plate to synchronously keep away from the front template to move through the second positioning column, and the first waist-shaped groove of the guide plate slides relative to the first positioning column on the front template at the moment. When the one end slip butt that the back template was kept away from in first waist type groove was on the first reference column in the front template, along with the back template continues to keep away from the runner board and removes, the back template drives the deflector through the second reference column and keeps away from the runner board removal in step, and the deflector keeps away from the runner board removal through the synchronous drive front template of first reference column. When the front template is far away from the runner plate and moves to the butt on the shaft shoulder head of guide bar, the mouth of a river runner in the front template breaks away from and keeps on the runner plate from the front template, moves along with the front template continues to keep away from into the offset plate, and the synchronous drive guide bar is far away from the runner plate and moves. The rod part of the guide rod penetrates through the front template in the opening and closing direction of the injection mold, extends and is abutted against the first end face, close to the front template, of the runner plate, the connecting rod of the linkage rod penetrates through the runner plate and is connected with the rod part of the guide rod, the shaft shoulder rod of the linkage rod penetrates through the rubber inlet plate and is abutted against the second end face, close to the rubber inlet plate, of the runner plate, so that the front template drives the guide rod to move away from the rubber inlet plate, meanwhile, the guide rod synchronously drives the linkage rod to force the runner plate to move away from the rubber inlet plate, the runner channel kept on the runner plate is separated from the rubber inlet channel of the rubber inlet plate, the runner channel can be ejected out of the runner plate through the ejection mechanism, the automatic taking-out of the runner channel is realized, the runner channel is not manually taken out, and the production automation is realized. Because the head of the linkage rod is positioned in the limiting groove of the rubber plate, and in the mold opening and closing direction of the injection mold, the height H of the limiting groove is larger than the height H of the head, so that the head of the linkage rod has a moving stroke relative to the limiting groove in the mold opening and closing direction of the injection mold, when the runner plate continues to be far away from the rubber plate to move, the linkage rod is synchronously driven to be far away from the rubber plate to move, and the head of the linkage rod is pressed against the bottom surface of the limiting groove of the rubber plate to complete the taking-out action of the water gap runner. The utility model relates to a three board-like slide rail injection mold's work accuracy is stable, and operation maintenance is convenient, and degree of automation is high, and production efficiency is high, long service life to be applicable to jumbo size product production, thereby widen slide rail injection mold's application range, mould development cost is low moreover, can shorten mould development cycle greatly.

In a further scheme, in the mold opening and closing direction, the length of the second waist-shaped groove is greater than that of the first waist-shaped groove.

A first positioning column is a first bolt, a first screw of the first bolt penetrates through the first waist-shaped groove and is in threaded connection with the front template, a first bolt head of the first bolt is positioned on one side, far away from the front template, of the guide plate, and the diameter of the outer peripheral wall of the first bolt head is larger than that of the first waist-shaped groove; and/or the second positioning column is a second bolt, a second screw of the second bolt penetrates through the second waist-shaped groove and is in threaded connection with the rear template, a second bolt head of the second bolt is positioned on one side, away from the rear template, of the guide plate, and the diameter of the outer peripheral wall of the second bolt head is larger than that of the second waist-shaped groove.

A first positioning column comprises a first annular cylinder and a first annular shoulder which are sequentially connected, the first annular cylinder is positioned in the first waist-shaped groove, the first annular shoulder is positioned on one side, away from the front template, of the guide plate, the diameter of the outer peripheral wall of the first annular shoulder is larger than that of the first waist-shaped groove, and a first fastener penetrates through the first annular shoulder and the first annular cylinder and is connected with the front template; and/or the second positioning column comprises a second annular cylinder and a second annular shoulder which are sequentially connected, the second annular cylinder is located in the second waist-shaped groove, the second annular shoulder is located on one side, away from the rear template, of the guide plate, the diameter of the outer peripheral wall of the second annular shoulder is larger than that of the second waist-shaped groove, and the second fastener penetrates through the second annular shoulder and the second annular cylinder and is connected with the rear template.

According to a further scheme, the three-plate type sliding rail injection mold further comprises a moving block and an inclined guide post, the moving block is movably located on the end face, close to the front mold plate, of the rear mold plate, the inclined guide post is obliquely arranged relative to the mold opening and closing direction, the first end of the inclined guide post is arranged on the front mold plate, the second end of the inclined guide post is slidably inserted into the moving block, and the moving block can move in the direction perpendicular to the mold opening and closing direction.

According to a further scheme, a first limiting column is convexly arranged on the end face, close to the front template, of the rear template, a rear mold core is arranged on the end face, close to the front template, of the rear template, the moving block can form a cavity with the rear mold core, and the first limiting column is located on one side, away from the rear mold core, of the moving block in the moving direction of the moving block.

According to a further scheme, the three-plate type sliding rail injection mold further comprises a driving plate, the driving plate is located on one side, away from the front template, of the rear template, the rear template is installed on the driving plate through a supporting plate, and the free end of the second sliding rail can penetrate through the supporting plate and can be inserted into a positioning hole of the driving plate.

A further scheme is, three board-like slide rail injection mold still includes push pedal and oblique ejector pin, and the push pedal is located the one side that the front mould board was kept away from to the rear mould board, is provided with the fixing base in the push pedal, and the spout has been seted up to the fixing base, and the spout extends on the mould direction that opens and shuts of perpendicular to, and the ejector pin runs through the rear mould board setting with inclining to the mould direction that opens and shuts relatively, and the one end of ejector pin is provided with the guide rail structure, guide rail structure slidable ground and spout cooperation.

According to a further scheme, the guide rail structure comprises a first pulley, a shaft rod and a second pulley which are sequentially connected, the shaft rod penetrates through one end of the oblique ejector rod, the first pulley and the second pulley are respectively located on two side faces of the oblique ejector rod, the cross section of the sliding groove is in a T shape, and the first pulley and the second pulley are respectively matched with grooves on two sides of the sliding groove in a sliding mode.

The push plate is provided with a first limiting column which is arranged on the end face of the rear template in a protruding mode.

Drawings

Fig. 1 is a first view structural diagram of an embodiment of a three-plate type slide rail injection mold of the present invention.

Fig. 2 is a second view structure diagram of an embodiment of the injection mold for three-plate type sliding rails of the present invention.

Fig. 3 is an exploded view of an embodiment of a three-plate type slide rail injection mold of the present invention.

Fig. 4 is a first view structural diagram of a first local structure of an injection mold for a three-plate slide rail according to the present invention.

Fig. 5 is a second view structure diagram of the first local structure of the three-plate slide rail injection mold according to the present invention.

Fig. 6 is a first view structure diagram of a second partial structure of the injection mold for three-plate type sliding rails according to the present invention.

Fig. 7 is a second view structure diagram of a second partial structure of the injection mold for three-plate type sliding rails according to the present invention.

Fig. 8 is an exploded view of a second partial structure of an injection mold for three-plate sliding rails according to the present invention.

Fig. 9 is a structural diagram of a third partial structure of an injection mold for three-plate type sliding rails according to the present invention.

Fig. 10 is a cross-sectional view of the embodiment of the injection mold for three-plate sliding rail according to the present invention, wherein the fixing seat and the lifter rod are matched with each other.

Fig. 11 is an exploded view of the embodiment of the injection mold for three-plate slide rails according to the present invention, wherein the fixing base and the lifter are engaged with each other.

Fig. 12 is a structure diagram of the guide plate, the first positioning column and the second positioning column of the three-plate slide rail injection mold according to the present invention.

Fig. 13 is a cross-sectional view of the guide plate, the first positioning column and the second positioning column in an embodiment of the injection mold with three-plate type slide rails of the present invention.

Fig. 14 is a first perspective sectional view of an embodiment of a three-plate sliding rail injection mold of the present invention.

Fig. 15 is a second perspective sectional view of an embodiment of a three-plate sliding rail injection mold of the present invention.

Fig. 16 is a third perspective sectional view of an embodiment of a three-plate sliding rail injection mold of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1 to 3, the embodiment discloses a three-plate slide rail injection mold 1, which includes a drive plate 7, a push plate 17, a rear template 5, a front template 4, a runner plate 3 and a glue inlet plate 2, which are sequentially arranged in a mold opening and closing direction of the injection mold, i.e., the push plate 17 is located on one side of the rear template 5 away from the front template 4, and the drive plate 7 is located on one side of the rear template 5 away from the front template 4. Wherein, the end surface of the front template 4 close to the rear template 5 is provided with a front mold core 110 (see fig. 4), the end surface of the rear template 5 close to the front template 4 is provided with a rear mold core 111 (see fig. 6), and a cavity can be formed between the front mold core 110 and the rear mold core 111.

Referring to fig. 4 to 16, the rubber plate 2 of the present embodiment is provided with a first slide rail 8, the first slide rail 8 extends in a mold opening and closing direction of the injection mold, the front mold plate 4 is provided with a first slide seat 9, and the first slide seat 9 is slidably engaged with the first slide rail 8. Specifically, the number of the first slide rails 8 and the first slide seats 9 in this embodiment is two, the two first slide rails 8 are arranged side by side in the direction perpendicular to the mold opening and closing direction, and one first slide seat 9 is slidably matched with one first slide rail 8. The front platen 4 is supported on the first slide rail 8 by the first slide 9 so as to be movable in the mold opening and closing direction of the injection mold, thereby improving the working accuracy and stability of the front platen 4.

In this embodiment, the front mold plate 4 is provided with a second slide rail 10, the second slide rail 10 extends in a mold opening and closing direction of the injection mold, the rear mold plate 5 is provided with a second slide seat 11, and the second slide seat 11 is slidably matched with the second slide rail 10. The guide device for the die opening and closing work between the front template 4 and the rear template 5 is composed of the second slide rail 10 and the second slide seat 11, so that the volume of the traditional die increased by arranging the guide pillar and the guide sleeve is reduced, the slide rail injection mold 1 is simple in structure, low in processing cost and high in die opening efficiency, the development period of the die is greatly shortened, and the die opening and closing work accuracy and stability of the rear template 5 are improved. The rear template 5 of the present embodiment is mounted on the driving plate 7 through the supporting plate 6, and the free end of the second slide rail 10 can penetrate through the supporting plate 6 and can be inserted into the positioning hole 71 of the driving plate 7, so as to further improve the working accuracy and stability of the rear template 5. Specifically, the number of the second slide rails 10 and the second slide seats 11 in this embodiment is four, two second slide rails 10 are located on the first side surface of the front template 4, and the two second slide rails 10 are respectively disposed close to the third side surface and the fourth side surface of the front template 4, and the third side surface and the fourth side surface of the front template 4 are disposed oppositely. The other two second slide rails 10 are located on a second side surface of the front template 4 opposite to the first side surface, the two second slide rails 10 located on the first side surface of the front template 4 are respectively arranged in one-to-one correspondence with the other two second slide rails 10 located on the second side surface of the front template 4, and one second slide 11 is slidably matched with one second slide rail 10, so that the working accuracy and stability of the rear template 5 are further improved.

The three-plate type slide rail injection mold 1 further comprises a guide plate 12, a guide rod 18 and a linkage rod 19, wherein a first waist-shaped groove 121 and a second waist-shaped groove 122 are formed in the guide plate 12, the first waist-shaped groove 121 and the second waist-shaped groove 122 are arranged side by side in the opening and closing mold direction of the injection mold and extend in the opening and closing mold direction of the injection mold, a first positioning column 14 is arranged on the front mold plate 4, a second positioning column 13 is arranged on the rear mold plate 5, the first positioning column 14 is located in the first waist-shaped groove 121, and the second positioning column 13 is located in the second waist-shaped groove 122. The shaft shoulder 181 of the guide rod 18 can press against one end of the front mold plate 4 far away from the runner plate 3, and the rod part of the guide rod 18 penetrates through the front mold plate 4 in the mold opening and closing direction of the injection mold to extend and press against the first end face of the runner plate 3 close to the front mold plate 4. The end face, far away from the runner plate 3, of the rubber plate 2 is provided with a limiting groove 21, the linkage rod 19 comprises a connecting rod 191, a shaft shoulder rod 192 and a head 193 which are connected in sequence, the connecting rod 191 of the linkage rod 19 penetrates through the runner plate 3 and is connected with the rod part of the guide rod 18, the shaft shoulder rod 192 of the linkage rod 19 penetrates through the rubber plate 2 and is abutted against the second end face, close to the rubber plate 2, of the runner plate 3, and the head 193 of the linkage rod 19 is located in the limiting groove 21. In the mold opening and closing direction of the injection mold, the height H2 of the limiting groove 21 is greater than the height H1 of the head 193, so that the head 193 of the linkage rod 19 has a moving stroke relative to the limiting groove 21 in the mold opening and closing direction of the injection mold. In order to improve the working accuracy and reliability of the three-plate slide rail injection mold 1 of the present embodiment, the shaft shoulder 181 of the guide bar 18 of the present embodiment is movably inserted into the rear mold plate 5.

When the three-plate sliding rail injection mold 1 of the embodiment opens the mold in the mold opening and closing direction, the driving plate 7 controls the rear mold plate 5 through the supporting plate 6 to drive the rear mold core 111 to move away from the front mold plate 4, and at this time, the second positioning column 13 on the rear mold plate 5 synchronously slides in the second waist-shaped groove 122 of the guide plate 12. When the second positioning column 13 on the rear template 5 abuts against one end, far away from the front template 4, of the second waist-shaped groove 122 in a sliding manner, the mold splitting action is completed between the rear mold core 111 of the rear template 5 and the front mold core 110 of the front template 4, at this time, the nozzle runner in the front template 4 is separated from the injection product, then, the rear template 5 continues to move away from the front template 4 along with the rear template 5, the rear template 5 drives the guide plate 12 to move away from the front template 4 synchronously through the second positioning column 13, and at this time, the first waist-shaped groove 121 of the guide plate 12 slides relative to the first positioning column 14 on the front template 4. When the end of the first waist-shaped groove 121 far away from the rear template 5 is slidably abutted to the first positioning column 14 on the front template 4, along with the fact that the rear template 5 continues to be far away from the runner plate 3 to move, the rear template 5 drives the guide plate 12 to synchronously be far away from the runner plate 3 through the second positioning column 13 to move, and the guide plate 12 synchronously drives the front template 4 to be far away from the runner plate 3 through the first positioning column 14 to move. When the front mold plate 4 moves away from the runner plate 3 to abut against the shoulder 181 of the guide rod 18, the nozzle runner in the front mold plate 4 is separated from the front mold plate 4 and held on the runner plate 3, and the guide rod 18 is synchronously driven to move away from the runner plate 3 as the front mold plate 4 continues to move away from the inlet plate 2. Because the rod part of the guide rod 18 penetrates through the front template 4 in the mold opening and closing direction of the injection mold and extends and is abutted against the first end face, close to the front template 4, of the runner plate 3, the connecting rod 191 of the linkage rod 19 penetrates through the runner plate 3 and is connected with the rod part of the guide rod 18, the shaft shoulder rod 192 of the linkage rod 19 penetrates through the rubber inlet plate 2 and is abutted against the second end face, close to the rubber inlet plate 2, of the runner plate 3, the guide rod 18 drives the guide rod 18 to move away from the rubber inlet plate 2 while the guide rod 18 synchronously drives the linkage rod 19 to force the runner plate 3 to move away from the rubber inlet plate 2, so that the water gap flow channel kept on the runner plate 3 is separated from the rubber inlet flow channel of the rubber inlet plate 2, the water gap flow channel can be ejected out of the runner plate 3 through the ejection mechanism, the automatic taking-out of the water gap flow channel is realized, the manual taking-out of the water gap flow channel is not required, and the production automation is realized. Because the head 193 of the linkage rod 19 is positioned in the limiting groove 21 of the rubber plate 2, and in the mold opening and closing direction of the injection mold, the height H2 of the limiting groove 21 is greater than the height H1 of the head 193, so that the head 193 of the linkage rod 19 has a moving stroke relative to the limiting groove 21 in the mold opening and closing direction of the injection mold, when the runner plate 3 continues to move away from the rubber plate 2, the linkage rod 19 is synchronously driven to move away from the rubber plate 2, and the head 193 of the linkage rod 19 is pressed against the bottom surface of the limiting groove 21 of the rubber plate 2, namely, the taking-out action of the runner of the water gap is completed. The three-plate type sliding rail injection mold 1 has the advantages of accurate and stable work, convenient operation and maintenance, high automation degree, high production efficiency and long service life, is suitable for production of large-size products, widens the application range of the sliding rail injection mold 1, is low in mold development cost, and can greatly shorten the mold development period.

Specifically, in the mold opening and closing direction of the injection mold, the length of the second waist-shaped groove 122 is greater than the length of the first waist-shaped groove 121. The number of the guide plates 12 is two in the present embodiment, and the two guide plates 12 are located on the first side and the second side of the front mold plate 4, respectively, and are diagonally arranged. Correspondingly, the number of the first positioning columns 14 and the second positioning columns 13 is two, and one first positioning column 14 and one second positioning column 13 are matched with one guide plate 12. The number of the guide rods 18 and the linkage rods 19 is four in the embodiment, the four linkage rods 19 are respectively arranged at four corner positions of the injection mold, and one linkage rod 19 is matched with one guide rod 18, so that the working accuracy and the stability of the slide rail injection mold 1 are improved.

In the embodiment of this embodiment, the first positioning column 14 includes a first annular cylinder 1421 and a first annular shoulder 1422, which are connected in sequence, the first annular cylinder 1421 is located in the first waist-shaped groove 121, the first annular shoulder 1422 is located on one side of the guide plate 12 away from the front mold plate 4, the diameter of the outer peripheral wall of the first annular shoulder 1422 is greater than the diameter of the first waist-shaped groove 121, and the first fastening member 131 passes through the first annular cylinder 1421 and the first annular cylinder 1422 and is connected with the front mold plate 4. The second positioning column 13 includes a second annular barrel 1321 and a second annular shoulder 1322 connected in sequence, the second annular barrel 1321 is located in the second waist-shaped groove 122, the second annular shoulder 1322 is located on one side of the guide plate 12 away from the rear mold plate 5, the diameter of the outer peripheral wall of the second annular shoulder 1322 is larger than that of the second waist-shaped groove 122, and the second fastener 131 penetrates through the second annular shoulder 1322 and the second annular barrel 1321 and is connected with the rear mold plate 5. The first waist-shaped groove 121 of the guide plate 12 can slide in the mold opening and closing direction of the injection mold relative to the first ring barrel 1421 of the first positioning column 14, the second waist-shaped groove 122 of the guide plate 12 can slide in the mold opening and closing direction of the injection mold relative to the second ring barrel 1321 of the second positioning column 13, the first ring shoulder 1422 of the first positioning column 14 blocks one side of the guide plate 12 away from the front mold plate 4, and the second ring shoulder 1322 of the second positioning column 13 blocks one side of the guide plate 12 away from the rear mold plate 5, so that the matching accuracy and stability of the first waist-shaped groove 121 and the second waist-shaped groove 122 with the first positioning column 14 and the second positioning column 13 are improved. Specifically, the first fastener 131 and the second fastener 131 are both locking bolts in this embodiment. In order to improve the assembling accuracy of the first positioning column 14 and the front template 4, a first flange 1423 is convexly arranged on the outer peripheral wall of one end of the first annular cylinder 1421, which is far away from the first annular shoulder 1422, a first positioning groove is formed in the side surface of the front template 4, and the first flange 1423 is located on one side of the guide plate 12, which is close to the front template 4, and is located in the first positioning groove, so that the position of the first positioning column 14 on the side surface of the front template 4 is defined. In order to improve the assembling accuracy of the second positioning pillars 13 and the rear mold plate 5, a second flange 1323 is convexly provided on an outer peripheral wall of an end of the second collar 1321 away from the second shoulder 1322, a second positioning slot 51 is formed on a side surface of the rear mold plate 5, and the second flange 1323 is located on a side of the guide plate 12 close to the rear mold plate 5 and located in the second positioning slot 51, so as to limit the positions of the second positioning pillars 13 on the side surface of the rear mold plate 5.

In another embodiment, the first positioning column 14 is a first bolt, a first screw of the first bolt penetrates through the first waist-shaped groove 121 and is in threaded connection with the front template 4, a first bolt head of the first bolt is located on one side of the guide plate 12 away from the front template 4, and the diameter of the outer peripheral wall of the first bolt head is larger than that of the first waist-shaped groove 121. The second positioning column 13 is a second bolt, a second screw of the second bolt penetrates through the second waist-shaped groove 122 and is in threaded connection with the rear template 5, a second bolt head of the second bolt is located on one side, away from the rear template 5, of the guide plate 12, and the diameter of the outer peripheral wall of the second bolt head is larger than that of the second waist-shaped groove 122.

The three-plate sliding rail injection mold 1 further comprises a moving block 113 and an inclined guide post 112, the moving block 113 is movably located on the end face, close to the front mold plate 4, of the rear mold plate 5, the inclined guide post 112 is obliquely arranged relative to the mold opening and closing direction, the first end of the inclined guide post 112 is arranged on the front mold plate 4, the second end of the inclined guide post 112 is slidably inserted into the moving block 113, the moving block 113 can move in the direction perpendicular to the mold opening and closing direction, and therefore demolding can be conducted on the outer side buckling position of a product. Wherein a cavity is formed among the moving block 113, the front mold core 110 and the rear mold core 111. The number of the moving blocks 113 and the number of the inclined guide posts 112 in this embodiment are four, and one moving block 113 is adapted to one inclined guide post 112. Four forming cavities can be formed among the front mold core 110, the rear mold core 111 and the four moving blocks 113, namely, the injection mold can produce four products by one-time injection molding, and the production efficiency of the injection mold is greatly improved.

In order to improve the accuracy and stability of the operation of the moving block 113, a first limit column 114 is convexly disposed on the end surface of the rear template 5 close to the front template 4, a rear mold core 111 is disposed on the end surface of the rear template 5 close to the front template 4, the moving block 113 and the rear mold core 111 may form a cavity, and in the moving direction of the moving block 113, the first limit column 114 is located on one side of the moving block 113 far from the rear mold core 111. When the moving block 113 performs a demolding operation, the moving block 113 is driven by the rear mold plate 5 to move away from the front mold plate 4, and the inclined guide post 112 inclined relative to the mold opening and closing direction is arranged on the front mold plate 4, and the second end of the inclined guide post 112 is slidably inserted into the moving block 113, so that the inclined guide post 112 forces the moving block 113 to move away from the rear mold core 111 in the direction perpendicular to the mold opening and closing direction, and the demolding of the outer side buckling position of the product is realized. When the moving block 113 moves away from the rear mold core 111 in the direction perpendicular to the mold opening and closing direction and abuts against the first limit post 114, the first limit post 114 forces the moving block 113 to stop moving, so that the moving block 113 is prevented from being separated from the rear mold plate 5, and the moving block 113 and the inclined guide post 112 can be smoothly matched when the mold is closed. To further improve the accuracy and stability of the operation of the moving block 113, the guide groove 115 is provided on the end surface of the rear mold plate 5 adjacent to the front mold plate 4, the moving block 113 is provided with a guide rail 1131, the guide rail 1131 extends in the moving direction of the moving block 113, and the guide rail 1131 slidably engages with the guide groove 115.

The three-plate sliding rail injection mold 1 further comprises an inclined ejector rod 116, a fixed seat 117 is arranged on the push plate 17, a sliding groove 1171 is formed in the fixed seat 117, and the sliding groove 1171 extends in the mold opening and closing direction perpendicular to the injection mold. The lifter 116 is disposed to penetrate the rear platen 5 obliquely with respect to the mold opening and closing direction, and one end of the lifter 116 is provided with a rail structure 118, and the rail structure 118 is slidably engaged with the chute 1171. And a cavity can be formed among the other end of the inclined ejector rod 116, the moving block 113, the front mold core 110 and the rear mold core 111. The push plate 17 is controlled to move towards the rear template 5, the fixed seat 117 and the inclined ejector rod 116 are synchronously driven to move towards the rear template 5, the inclined ejector rod 116 obliquely penetrates through the rear template 5 relative to the mold opening and closing direction, the guide rail structure 118 of the inclined ejector rod 116 is slidably matched with the sliding groove 1171, along with the movement of the push plate 17 towards the rear template 5, the guide rail structure 118 at one end of the inclined ejector rod 116 slides in the sliding groove 1171, meanwhile, the other end of the inclined ejector rod 116 moves away from the rear mold core 111 in the vertical relative mold opening and closing direction, so that the inner buckling position of a product is demolded, and then, the ejector pin 120 on the push plate 17 can eject the product out and demold.

Specifically, the guide rail structure 118 of this embodiment includes a first pulley 1181, a shaft 1183, and a second pulley 1182 that are connected in sequence, the shaft 1183 is disposed through one end of the oblique top rod 116, and the first pulley 1181 and the second pulley 1182 are respectively located on two side surfaces of the oblique top rod 116. The cross section of the chute 1171 is T-shaped, and the first pulley 1181 and the second pulley 1182 are slidably engaged with the grooves on both sides of the chute 1171, respectively, so that the stability of the sliding engagement is improved. In order to improve the working accuracy and reliability of the push plate 17, in this embodiment, a second limiting column 119 is convexly disposed on an end surface of the push plate 17 close to the rear mold plate 5, the second limiting column 119 can abut against the rear mold plate 5, a stabilizer bar 16 is disposed on the push plate 17, a free end of the stabilizer bar 16 extends in a mold opening and closing direction of the injection mold and is inserted into the rear mold plate 5, a pressure spring 15 is sleeved on the stabilizer bar 16, and two ends of the pressure spring 15 abut against between the push plate 17 and the rear mold plate 5 respectively. In addition, in order to adapt to one or four molding cavities, the number of the oblique ejector rods 116 and the fixed seats 117 is four, and one fixed seat 117 is adapted to one oblique ejector rod 116.

Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.

Claims

1. The utility model provides a three board-like slide rail injection mold, includes back template, preceding template, runner plate and the offset plate that sets gradually on the mould direction that opens and shuts, its characterized in that:

the glue inlet plate is provided with a first slide rail, the first slide rail extends in the die opening and closing direction, the front die plate is provided with a first slide seat, and the first slide seat is slidably matched with the first slide rail;

the front template is provided with a second slide rail, the second slide rail extends in the mold opening and closing direction, the rear template is provided with a second slide seat, and the second slide seat is slidably matched with the second slide rail;

the three-plate type slide rail injection mold further comprises a guide plate, a guide rod and a linkage rod, wherein the guide plate is provided with a first waist-shaped groove and a second waist-shaped groove which are arranged side by side in the mold opening and closing direction and extend in the mold opening and closing direction, the front template is provided with a first positioning column, the rear template is provided with a second positioning column, the first positioning column is located in the first waist-shaped groove, and the second positioning column is located in the second waist-shaped groove;

the shaft shoulder head of the guide rod can be pressed against one end of the front template, which is far away from the runner plate, and the rod part of the guide rod penetrates through the front template in the die opening and closing direction, extends and is pressed against the first end face, which is close to the front template, of the runner plate;

advance the offset plate and keep away from the spacing groove has been seted up to the terminal surface of runner plate, the gangbar is including the connecting rod, axle shoulder pole and the head that connect gradually, the connecting rod runs through the runner plate and with the pole portion of guide bar is connected, the axle shoulder pole runs through advance the offset plate and support press the runner plate is close to on the second terminal surface of advancing the offset plate, the head is located the spacing inslot in the mould direction that opens and shuts, the height in spacing groove is greater than the height of head.

2. The three-plate sliding rail injection mold according to claim 1, characterized in that:

in the die opening and closing direction, the length of the second waist-shaped groove is greater than that of the first waist-shaped groove.

3. The three-plate sliding rail injection mold according to claim 1, characterized in that:

the first positioning column is a first bolt, a first screw of the first bolt penetrates through the first waist-shaped groove and is in threaded connection with the front template, a first bolt head of the first bolt is positioned on one side, away from the front template, of the guide plate, and the diameter of the outer peripheral wall of the first bolt head is larger than that of the first waist-shaped groove; and/or the like, and/or,

the second positioning column is a second bolt, a second screw of the second bolt penetrates through the second waist-shaped groove and is in threaded connection with the rear template, a second bolt head of the second bolt is located on one side, away from the rear template, of the guide plate, and the diameter of the outer peripheral wall of the second bolt head is larger than that of the second waist-shaped groove.

4. The three-plate sliding rail injection mold according to claim 1, characterized in that:

the first positioning column comprises a first annular cylinder and a first annular shoulder which are sequentially connected, the first annular cylinder is positioned in the first waist-shaped groove, the first annular shoulder is positioned on one side, away from the front template, of the guide plate, the diameter of the outer peripheral wall of the first annular shoulder is larger than that of the first waist-shaped groove, and a first fastener penetrates through the first annular shoulder and the first annular cylinder and is connected with the front template; and/or the like, and/or,

the second reference column includes a second ring section of thick bamboo and the second ring shoulder that connects gradually, the second ring section of thick bamboo is located second waist type inslot, the second ring shoulder is located the deflector is kept away from one side of back template, just the periphery wall diameter that the second ring was shouldered is greater than the diameter of second waist type groove, the second fastener passes the second ring shoulder with the second ring section of thick bamboo and with the back template is connected.

5. The three-plate sliding rail injection mold according to claim 1, characterized in that:

the three-plate sliding rail injection mold further comprises a moving block and an inclined guide post, the moving block is movably located on the end face, close to the front mold plate, of the rear mold plate, the inclined guide post is obliquely arranged relative to the mold opening and closing direction, the first end of the inclined guide post is arranged on the front mold plate, the second end of the inclined guide post is slidably inserted into the moving block, and therefore the moving block can move in the direction perpendicular to the mold opening and closing direction.

6. The three-plate sliding rail injection mold according to claim 5, wherein:

the end face of the rear template, which is close to the front template, is convexly provided with a first limiting column, the end face of the rear template, which is close to the front template, is provided with a rear mold core, and the moving block and the rear mold core can form a forming cavity;

in the moving direction of the moving block, the first limiting column is located on one side, away from the rear mold core, of the moving block.

7. The three-plate sliding rail injection mold according to claim 1, characterized in that:

the three-plate type sliding rail injection mold further comprises a driving plate, the driving plate is located on one side, away from the front template, of the rear template, the rear template is installed on the driving plate through a supporting plate, and the free end of the second sliding rail can penetrate through the supporting plate and can be inserted into a positioning hole of the driving plate.

8. The injection mold of any one of claims 1 to 7, wherein:

the three-plate sliding rail injection mold further comprises a push plate and an inclined ejector rod, the push plate is positioned on one side, away from the front template, of the rear template, a fixed seat is arranged on the push plate, a sliding groove is formed in the fixed seat, and the sliding groove extends in a direction perpendicular to the mold opening and closing direction;

the oblique ejector rod obliquely penetrates through the rear template relative to the die opening and closing direction, and one end of the oblique ejector rod is provided with a guide rail structure which is matched with the sliding groove in a sliding mode.

9. The three-plate slide rail injection mold according to claim 8, wherein:

the guide rail structure comprises a first pulley, a shaft lever and a second pulley which are sequentially connected, the shaft lever penetrates through one end of the oblique ejector rod, and the first pulley and the second pulley are respectively positioned on two side surfaces of the oblique ejector rod;

the cross section of the sliding groove is T-shaped, and the first pulley and the second pulley are respectively matched with the grooves on the two sides of the sliding groove in a sliding mode.

10. The three-plate slide rail injection mold according to claim 8, wherein:

the end face, close to the rear template, of the push plate is convexly provided with a second limiting column, and the second limiting column can be pressed on the rear template in a propping mode.