CN102615786B - PPR (pentatricopeptide repeats) pipe casing lamination-injection mould - Google Patents

Abstract

PPR pipe casing laminated injection mold, including upper and lower mold cavities composed of fixed mold cavity plate, movable mold cavity plate and movable template. There are plastic parts in the upper and lower mold cavities. The slider, the large slider is driven by the inclined guide post, the inner side of the large slider is installed with a slider core, and the slider core extends into the inner wall of the plastic part, and it is characterized in that the runner insert, The channel cutting mechanism and the top branch channel device, the channel cutting mechanism includes a shearing fixed block, the shearing fixed block connects the first and second shearing pieces through positioning pins, and the first and second shearing pieces are inserted into the flow channel insert Among them, the top branch flow channel device includes a connecting block, a limit screw is installed on the connecting block, the limit screw is connected to the large slider, the connecting block is connected to the inclined block of the top piece, and the runner thimble, the ejection spring and the top piece are installed in the movable template. , the head of the top sheet is placed on the diverter handle, the top sheet is shaped with a slanted groove, and the slanted block is matched with the slanted groove.

Description

PPR pipe sleeve lamination injection mold

technical field

The invention relates to a PPR pipe sleeve lamination injection mold, which is mainly used in a row mold with sliders on both sides of a plastic part, and belongs to the field of plastic molds.

Background technique

Plastic molds are used to produce plastic products, such as PPR pipe sleeves and other plastic parts. At present, a row of plastic molds with sliders on both sides of the mold template are generally used. The disadvantage is: due to the limitation of the length of the runner, only One mold with one cavity or one mold with few cavities, the utilization rate and production efficiency of the injection molding machine are low, and the cost is high.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a method for cutting off the flow channel (remaining material) by a cutting mechanism when the slider slides, and splitting the flow channel (handle) by the ejector mechanism, and then ejecting the plastic part. , realize the laminated structure of the double parting surface, produce two sets of mold products in one injection, and improve the utilization rate of the injection molding machine and the production efficiency of the PPR pipe sleeve laminated injection mold.

The technical scheme of the PPR pipe sleeve lamination injection mold of the present invention is: comprise fixed mold double plate and movable mold double plate, fixed mold double plate connects fixed mold cavity plate, movable mold complex plate connects movable mold cavity plate, movable mold cavity plate and A movable template is set between the fixed mold cavity plates, and the upper and lower sides of the movable template are respectively made with an upper mold cavity and a lower mold cavity. The lower mold cavity is formed between the plates, and there are injection-molded plastic parts in the upper mold cavity and the lower mold cavity. There are large sliders on the left and right sides of the movable template, and inclined guide columns are installed under the fixed mold cavity plate. , the oblique guide posts pass through two large sliders respectively, and the inner sides of the two large sliders are respectively equipped with core fixing plates, each of which is connected to the slider core, and the slider core extends into the inner wall of the plastic part , a fixed-distance mold opening mechanism is installed on the left and right sides of the fixed mold cavity plate and the movable mold cavity plate. The top branch channel device, the channel cutting mechanism includes a shear fixed block installed in the large slider, the shear fixed block connects the first shear piece and the second shear piece through a positioning pin, and the first shear piece and the second shear piece are inserted into the flow channel insert, and the top branch flow channel device includes a connecting block, a limit screw is installed on the connecting block, the limit screw is connected to the large slider, and the connecting block is connected to the top sheet oblique wedge block. There are runner thimbles, ejection springs and top pieces installed in the movable template. The head of the top piece is pushed against the diverter material handle. The top piece is formed with a slanted wedge groove, and the slanted wedge block is matched with the slanted wedge groove.

The invention discloses a PPR pipe sleeve laminated injection mold. When the injection molding machine is opened, under the action of a fixed-distance mold opening mechanism, the movable mold cavity plate and the movable template are opened and separated (partitioned), and when the mold is opened After a certain distance, the cavity plate of the fixed model and the movable platen are separated. During the mold opening process of the movable platen and the cavity plate of the fixed model, the inclined guide column installed under the cavity plate of the fixed model drives the large sliders on the left and right sides outward. Sliding, and at the same time drive the core fixing plate, slider core and runner insert to slide out the core. The shearing fixed block in the block drives the first shearing piece to cut off the flow channel with the large slider moving outward through the positioning pin, and the second shearing piece delays pulling out of the flow channel. At the same time, the large slider pulls the connecting block through the limit screw Moving outward, the connecting block drives the top sheet to move outward, and then drives the top sheet to push out the diverter material handle, and the diverter material handle drives the plastic part to fall off, and the demoulding is completed. This solution overcomes the limitation of the length of the runners during injection molding, and adopts the lamination mechanism of the double parting surface, which can double the production efficiency without replacing the equipment, improve the utilization rate of the injection molding machine, and save costs.

In the PPR pipe sleeve lamination injection mold of the present invention, the specific technical scheme of the described fixed-distance mold opening mechanism is the prior art, including a pull rod installed on the side wall of the cavity plate of the fixed mold, and a pull hook is formed on the pull rod, and the movable template The lock block and the lock block spring are installed on the side wall of the lock block. The lock block is matched with the pull hook. The side of the lock block is provided with a slope. The pull hook first pulls the lock block, and drives the movable template on which the lock block is installed to separate from the movable model cavity plate. When the mold is opened to a certain distance, the slope of the lock block contacts the pressure bar, and the spring of the lock block is compressed, so that the lock block and the pull hook Detach, continue to open the mold, separate the movable template from the fixed mold cavity plate, and complete the opening of the upper and lower mold cavities. A reset rod is installed in the movable template, which is beneficial to the reset of the runner thimble. The two sides of the large slider are respectively equipped with a bead, and the bead can slide smoothly and smoothly.

Description of drawings

Fig. 1 is the top view of the PPR pipe sleeve lamination injection mold of the present invention;

Fig. 2 is the A-A sectional schematic diagram of Fig. 1;

Fig. 3 is a schematic diagram of a fixed-distance mold opening mechanism of the present invention;

Fig. 4 is a schematic diagram of the channel cutting mechanism of the present invention;

Fig. 5 is a schematic diagram of the top branch flow channel device of the present invention.

Detailed ways

The present invention relates to a kind of PPR pipe casing lamination injection mold, as shown in Fig. 1-Fig. The plate 8 is connected with the movable model cavity plate 7, and the movable template 3 is arranged between the movable model cavity plate 7 and the fixed model cavity plate 2. The upper and lower sides of the movable template 3 are respectively formed with an upper cavity and a lower cavity, and the upper cavity The upper mold cavity is formed between the fixed mold cavity plate and the lower mold cavity is formed between the lower mold cavity and the movable mold cavity plate. There are injection-molded plastic parts 13 in the upper mold cavity and the lower mold cavity. On the left side of the movable template 3 , the right sides are respectively provided with large slide blocks 4,12, under the fixed mold cavity plate, oblique guide posts 6 are installed, and the oblique guide posts 6 pass through two large slide blocks 4,12 respectively, and the inboards of the two large slide blocks respectively There are core fixing plates 5,11, which are respectively connected to slide block cores 9,10 on the core fixing plates 5,11, and slide block cores 9,10 extend into the inner wall of the plastic part 13, and are fixed on the mold cavity plate 2 and The left and right sides of the movable model cavity plate 7 are equipped with a fixed-distance mold opening mechanism, which is characterized in that the large slider 4 is inlaid with a flow channel insert 23, and the large slider is equipped with a flow channel cutting mechanism and a top flow channel device. , the channel cutting mechanism includes a shearing fixed block 15 installed in the large slider 4, the shearing fixed block 15 connects the first shearing piece 16 and the second shearing piece 17 through the positioning pin 14, the first shearing The slice 16 and the second shearing piece 17 are inserted into the flow channel insert 23, and the top branch flow channel device includes a connecting block 28, and a limit screw 29 is installed on the connecting block 28, and the limit screw is connected to the large slider 12, connected to Block 28 connects top sheet oblique wedge block 27, is equipped with runner thimble 21, ejection spring 20 and top sheet 25 in movable template 3, and the head of top sheet 25 tops on the splitter material handle 24, and top sheet 25 is shaped on The oblique wedge groove 251, the oblique wedge block 27 is matched with the oblique wedge groove 251. When the injection molding machine opens the mold, under the action of the fixed-distance mold opening mechanism, the movable mold cavity plate 7 and the movable template 3 are opened and separated (partitioned), and after a certain distance is opened, the mold cavity plate 2 and the movable mold plate are fixed. The template is divided into 3 types. During the mold opening process of the movable template 3 and the fixed mold cavity plate 2, the inclined guide column 6 installed under the fixed mold cavity plate 2 drives the large sliders 4 and 12 on the left and right sides to slide outward, and at the same time Drive the core fixing plate, the slider core and the runner insert to slide the core out. At this time, the runner thimble 21 installed in the movable template 3 pushes the runner under the action of the ejection spring 20 and is installed on the large slider. The shearing fixing block 15 in the block 4 drives the first shearing piece 16 to cut off the flow channel with the movement of the large slider 4 through the positioning pin 14, and the second shearing piece 17 delays pulling out of the flow channel. At the same time, the large sliding block 12 The connecting block 28 is pulled outward by the limit screw, and the connecting block 28 drives the top sheet slanting block 27 to move outward, and then drives the top sheet 25 to eject the diverter handle 24, and the diverter handle 24 drives the plastic part 13 to fall off, and the mold is demoulded Finish. This solution overcomes the limitation of the length of the runners during injection molding, and adopts the lamination mechanism of the double parting surface, which can double the production efficiency without replacing the equipment, improve the utilization rate of the injection molding machine, and save costs. The fixed-distance mold opening mechanism includes a pull bar 30 installed on the side wall of the movable mold cavity plate, the pull bar is shaped on a pull hook 31, a lock block 32 and a lock block spring 35 are installed on the side wall of the movable template, the lock block and the pull hook Cooperate, the side of lock block 32 is shaped on inclined plane 33, and pressure rod 34 is installed on the side wall of fixed mold cavity plate, and pressure rod 34 cooperates with inclined plane 33, and when opening mold, drag hook first pulls lock block, drives and installs lock block The movable template is separated from the cavity plate of the movable model. When the mold is opened to a certain distance, the slope of the lock block contacts the pressure rod, and the spring of the lock block is compressed, so that the lock block and the pull hook are separated, and the mold is continued to open. The movable template and the fixed model The cavity plate is separated to complete the opening of the upper and lower cavity. The moving template 3 is equipped with a reset lever 22, which is beneficial to the reset of the runner thimble. The two sides of the large slider are respectively equipped with a bead 26. With the bead, the large slider slides smoothly and smoothly. .

Claims (4)

1.PPR pipe box lamination injection mold, comprise cover half compound plate (1) and dynamic model compound plate (8), cover half compound plate (1) connects cover half cavity plate (2), dynamic model compound plate (8) connects dynamic model cavity plate (7), between dynamic model cavity plate (7) and cover half cavity plate (2), moving platen (3) is set, moving platen (3) upper, lower both sides are shaped with respectively upper impression and lower impressions, between upper impression and cover half cavity plate, form upper cavity, between lower impressions and dynamic model cavity plate, form lower mode cavity, the plastic (13) that all has injection mo(u)lding in upper cavity and lower mode cavity, a left side in moving platen (3), right both sides are respectively provided with large slide block (4, 12), under cover half cavity plate, be equipped with Angle Pin (6), Angle Pin (6) is separately through two large slide blocks (4, 12), the inner side of two large slide blocks is equipped with core fixing plate (5 separately, 11), core fixing plate (5, 11) upper each connection sliding block fuse (9, 10), slide block fuse (9, 10) stretch in plastic (13) inwall, spacing die opening mechanism is installed in the left and right sides in cover half cavity plate (2) and dynamic model cavity plate (7), it is characterized in that studding with on described large slide block (4) runner insert (23), in large slide block, be equipped with and cut runner mechanism and top runner device, the described runner mechanism of cutting comprises the shearing fixed block (15) being arranged in large slide block (4), shear fixed block (15) and connect the first shearing sheet (16) and the second shearing sheet (17) by alignment pin (14), the first shearing sheet (16) and second is sheared sheet (17) insertion runner and is inserted in (23), described top runner device comprises contiguous block (28), on contiguous block (28), be equipped with stop screw (29), stop screw connects large slide block (12), contiguous block (28) connects top flat and tiltedly carves piece (27), in moving platen (3), be equipped with runner thimble (21), ejector spring (20) and top flat (25), the head of top flat (25) withstands on shunting material handle (24), in top flat (25), be shaped with and tiltedly carve groove (251), top flat is tiltedly carved piece (27) and is tiltedly carved groove (251) and match.

2. PPR pipe box lamination injection mold as claimed in claim 1; it is characterized in that described spacing die opening mechanism comprises the pull bar (30) being arranged on dynamic model cavity plate sidewall; on pull bar, be shaped with drag hook (31); lock dog (32) and lock dog spring (35) are installed on the sidewall of moving platen; lock dog matches with drag hook; the side of lock dog (32) is shaped with inclined-plane (33), and depression bar (34) is installed on cover half cavity plate sidewall, and depression bar (34) matches with inclined-plane (33).

3. PPR pipe box lamination injection mold as claimed in claim 1, is characterized in that being equipped with release link (22) in described moving platen (3).

4. PPR pipe box lamination injection mold as claimed in claim 1, is characterized in that described large slide block both sides are equipped with press strip (26) separately.

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