Insert-containing type three-color special-shaped hollow grid plate die head

Abstract

The mold head comprises an upper mold, an upper middle mold, a middle mold, a lower middle mold and a lower mold, the front end of the upper mold is connected with an upper mold lip, the front end of the lower mold is connected with a lower mold lip, and mounting grooves are formed in the lower portion of the front end of the upper middle mold, the upper portion of the front end of the middle mold and the upper portion of the front end of the lower middle mold in the breadth direction. The front end faces of the upper middle mold, the middle mold and the lower middle mold are connected with mold cores, a first runner is arranged between the upper mold and the upper middle mold, a second runner is arranged between the upper middle mold and the middle mold, a third runner is arranged between the middle mold and the lower middle mold, and a fourth runner is arranged between the lower middle mold and the lower mold. An upper extrusion channel is arranged between the upper die lip and the die core, a lower extrusion channel is arranged between the lower die lip and the die core, the upper extrusion channel is communicated with the first runner, and the lower extrusion channel is communicated with the fourth runner. The three-color special-shaped hollow grid plate can be extruded.

Description

Technical Field

[0001] The invention relates to a die head, in particular to an insert-containing three-color special-shaped hollow grid plate die head. Background Art

[0002] The three-color special-shaped hollow grid sheet die is a mold used to produce three-color special-shaped hollow grid sheets. It allows two different colors of plastic to be injected at the same time, plus the original color of the raw material. Through the design of the die, the final product has a three-color or multi-layered appearance. Hollow grid sheets are usually used in construction, decoration or other applications that require lightweight and high-strength materials. The design requirements of this die are high, and it is necessary to ensure the smooth mixing and accurate molding of the two plastics. Existing three-color hollow grid sheets are usually assembled, which has low production efficiency and high production costs. Summary of the invention

[0003] In view of the above problems, the present invention aims to provide a die head containing three-color special-shaped hollow grid plates with inserts, which can extrude three-color special-shaped hollow grid plate products.

[0004] The technical solution of the present invention is a three-color special-shaped hollow grid plate die head containing inserts, characterized in that it comprises an upper die, an upper middle die, an intermediate die, a lower middle die and a lower die, the front end of the upper die is connected with an upper die lip, the front end of the lower die is connected with a lower die lip, the lower part of the front end of the upper middle die, the intermediate die and the upper part of the front end of the lower middle die are provided with mounting grooves along the width direction, a guide insert is arranged in the mounting groove, the front end surfaces of the upper middle die, the intermediate die and the lower middle die are connected with a die core, a first flow channel is arranged between the upper die and the upper middle die, a second flow channel is arranged between the upper middle die and the intermediate die, a third flow channel is arranged between the intermediate die and the lower middle die, a fourth flow channel is arranged between the lower middle die and the lower die, an upper extrusion channel is arranged between the upper die lip and the die core, a lower extrusion channel is arranged between the lower die lip and the die core, the upper extrusion channel is communicated with the first flow channel, and the The lower extrusion channel is connected with the fourth flow channel, and two independent upper and lower extrusion channels a and b are arranged inside the mold core from back to front. The guide insert is provided with independent upward channel and downward channel. The second flow channel, the upward channel, and the extrusion channel a are connected, and the third flow channel, the downward channel, and the extrusion channel b are connected; the primary color raw materials enter from the first flow channel and the fourth flow channel and are extruded through the upper extrusion channel and the lower extrusion channel respectively. The A color raw material enters from the second flow channel and passes through the upward channel and then is extruded from the a extrusion channel. The B color raw material enters from the third flow channel and passes through the downward channel and then is extruded from the b extrusion channel; a vertical rib feed channel is arranged in the mold core, and the vertical rib feed channel is connected with the upper extrusion channel or the lower extrusion channel. The primary color raw materials are extruded from the vertical rib feed channel to form vertical ribs to support the horizontal thin-walled plates formed by the extrusion of the A color raw materials and the B color raw materials.

[0005] Preferably, the front part of the extrusion channel a is a straight section, and the rear part is an inclined section, which inclines downward from the back to the front, and the inner diameter of the channel gradually decreases; the front part of the extrusion channel b is a straight section, and the rear part is an inclined section, which inclines upward from the back to the front, and the inner diameter of the channel gradually decreases; the extrusion channel a and the extrusion channel b are symmetrically arranged up and down about the center line of the mold core.

[0006] Preferably, buffer grooves for slowing down the raw materials are arranged along the width direction at the feed ends of the upward channel and the downward channel; the buffer groove at the upward channel is formed by expanding the diameter at the junction of the guide insert, the upper middle mold and the middle mold; the buffer groove at the downward channel is formed by expanding the diameter at the junction of the guide insert, the lower middle mold and the middle mold.

[0007] Preferably, both the upper die lip and the lower die lip are provided with deformation grooves and push-pull fine-tuning devices.

[0008] Preferably, the push-pull fine-tuning device includes a fixed pressure block fixedly connected to the surface of the upper die lip and / or the lower die lip, the fixed pressure block is provided with a through hole, the fixed nut passes through the through hole of the fixed pressure block and is fixed to the corresponding die lip through the fixed pressure block and is limited by a flat key to prevent rotation, the fixed nut is connected to an adjusting nut through the internal thread of the fixing nut, the adjusting nut is connected to an adjusting screw through the internal thread of the adjusting nut, the front end of the adjusting screw is connected to the pull rod, the pull rod passes through the inner hole of the corresponding die lip and the deformation groove and is connected to the die lip inside the deformation groove, the pitch of the external thread of the adjusting nut is greater than the pitch of the internal thread; turning the adjusting nut pushes the adjusting screw forward or backward by means of differential threads.

[0009] Preferably, the pitch of the external thread of the adjusting nut is 3.5 mm, the pitch of the internal thread of the adjusting nut is 2.5 mm, and the adjusting nut rotates one circle to push the adjusting screw forward or backward by 1 mm.

[0010] The present invention can extrude three-color special-shaped hollow grid plate products, and can adjust the die lip gap according to actual production needs to produce products with different thicknesses, thereby better ensuring the uniformity of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention; Figure 3 It is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 4 It is a structural schematic diagram of the push-pull fine-tuning device in the present invention; Among them: 1—upper die; 2—upper middle die; 3—middle die; 4—lower middle die; 5—lower die; 6—upper die lip; 7—lower die lip; 8—guide insert; 81—upward channel; 82—downward channel; 9—mold core; 91—a extrusion channel; 92—b extrusion channel; 93—vertical rib feeding channel; 10—first flow channel; 11—second flow channel; 12—third flow channel; 13—fourth flow channel; 14—upper extrusion channel; 15—lower extrusion channel; 16—buffer groove; 17—deformation groove; 18—push-pull fine-tuning device; 181—fixed pressure block; 182—fixed nut; 183—adjusting nut; 184—adjusting screw; 185—pull rod. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] like Figures 1 to 4 As shown, the present invention provides a three-color special-shaped hollow grid plate die head containing an insert, comprising an upper die 1, an upper middle die 2, an intermediate die 3, a lower middle die 4 and a lower die 5, wherein the front end of the upper die 1 is connected to an upper die lip 6, the front end of the lower die 5 is connected to a lower die lip 7, the lower front end of the upper middle die 2, the intermediate die 3 and the upper front end of the lower middle die 4 are provided with mounting grooves along the width direction, a guide insert 8 is arranged in the mounting groove, the front end surfaces of the upper middle die 2, the intermediate die 3 and the lower middle die 4 are connected to a mold core 9, and the A first flow channel 10 is provided between the upper die 1 and the upper middle die 2, a second flow channel 11 is provided between the upper middle die 2 and the middle die 3, a third flow channel 12 is provided between the middle die 3 and the lower middle die 4, a fourth flow channel 13 is provided between the lower middle die 4 and the lower die 5, an upper extrusion channel 14 is provided between the upper die lip 6 and the die core 9, a lower extrusion channel 15 is provided between the lower die lip 7 and the die core 9, the upper extrusion channel 14 is connected to the first flow channel 10, and the lower extrusion channel 15 is connected to the third flow channel 12. The four flow channels 13 are connected, and the mold core 9 is provided with two independent upper and lower extrusion channels a 91 and b extrusion channels 92 from back to front. The guide insert 8 is provided with independent upward channels 81 and downward channels 82. The second flow channel 11, the upward channel 81, and the extrusion channel a 91 are connected, and the third flow channel 12, the downward channel 82, and the extrusion channel b 92 are connected; the primary color raw material enters from the first flow channel 10 and the fourth flow channel 13 through the upper extrusion channel 14 and the lower extrusion channel 14 respectively. The A-color raw material enters from the second flow channel 11 through the upward channel 81 and is extruded from the a extrusion channel 91. The B-color raw material enters from the third flow channel 12 through the downward channel 82 and is extruded from the b extrusion channel 92. A vertical rib feed channel 93 is provided in the mold core 9. The vertical rib feed channel 93 is connected to the upper extrusion channel 14 or the lower extrusion channel 15. The primary color raw materials are extruded from the vertical rib feed channel 93 to form vertical ribs to support the transverse thin-walled plate formed by the extrusion of the A-color raw material and the B-color raw material.

[0014] In the above scheme, the front part of the extrusion channel a 91 is a straight section, and the rear part is an inclined section that tilts downward from the back to the front while the inner diameter of the channel gradually decreases; the front part of the extrusion channel b 92 is a straight section, and the rear part is an inclined section that tilts upward from the back to the front while the inner diameter of the channel gradually decreases; the extrusion channel a 91 and the extrusion channel b 92 are symmetrically arranged up and down about the center line of the mold core 9.

[0015] Specifically, buffer grooves 16 for slowing down the raw materials are arranged along the width direction at the feed ends of the upward channel 81 and the downward channel 82. The buffer groove 16 at the upward channel 81 is formed by expanding the diameter at the junction of the guide insert 8, the upper middle mold 2, and the middle mold 3; the buffer groove 16 at the downward channel 82 is formed by expanding the diameter at the junction of the guide insert 8, the lower middle mold 4, and the middle mold 3.

[0016] In addition, the upper die lip 6 and the lower die lip 7 are both provided with a deformation groove 17 and a push-pull type fine adjustment device 18 .

[0017] Furthermore, the push-pull fine-tuning device 18 includes a fixed pressure block 181 fixedly connected to the surface of the upper die lip 6 and / or the lower die lip 7, the fixed pressure block 181 is provided with a through hole, and the fixing nut 182 passes through the through hole of the fixed pressure block 181 and is fixed to the corresponding die lip through the fixed pressure block 181 and is limited by a flat key to prevent rotation, the fixing nut 182 is internally threadedly connected with an adjusting nut 183, and the adjusting nut 183 is internally threadedly connected with an adjusting screw 184, the front end of the adjusting screw 184 is connected to the pull rod 185, and the pull rod 185 passes through the inner hole of the corresponding die lip and the deformation groove 17 and is connected to the die lip inside the deformation groove 17, the pitch of the external thread of the adjusting nut 183 is greater than the pitch of the internal thread; turning the adjusting nut 183 pushes the adjusting screw 184 forward or backward by means of differential threads.

[0018] Specifically, the pitch of the external thread of the adjusting nut 183 is 3.5 mm, the pitch of the internal thread of the adjusting nut 183 is 2.5 mm, and the adjusting nut 183 rotates one circle to push the adjusting screw 184 forward or backward by 1 mm.

[0019] In the present invention, the primary color raw materials enter from the first flow channel 10 and the fourth flow channel 13 respectively, and are extruded through the upper extrusion channel 14 and the lower extrusion channel 15 respectively, forming horizontal primary color raw material thin-walled plates at the top and bottom. The A color raw material enters from the second flow channel 11, passes through the upward channel 81, and is extruded from the a extrusion channel 91, forming a horizontal A color raw material thin-walled plate. The B color raw material enters from the third flow channel 12, passes through the downward channel 82, and is extruded from the b extrusion channel 92, forming a horizontal B color raw material thin-walled plate. The primary color raw materials simultaneously enter from the vertical rib feed channel 93 and are extruded to form vertical connecting ribs. The vertical connecting ribs of the primary color raw materials support the A color raw material thin-walled plate and the B color raw material thin-walled plate, and the above four parts of the extruded products are connected into an integrated structure, and finally a three-color special-shaped hollow lattice plate is formed.

[0020] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A three-color, special-shaped hollow grid plate die head containing an insert, characterized in that: The invention comprises an upper die (1), an upper middle die (2), an intermediate die (3), a lower middle die (4) and a lower die (5), wherein the front end of the upper die (1) is connected to an upper die lip (6), the front end of the lower die (5) is connected to a lower die lip (7), the lower front end of the upper middle die (2), the intermediate die (3) and the upper front end of the lower middle die (4) are provided with mounting grooves along the width direction, a guide insert (8) is arranged in the mounting groove, the front end surfaces of the upper middle die (2), the intermediate die (3) and the lower middle die (4) are connected to a die core (9), a first flow A second flow channel (11) is provided between the upper middle die (2) and the middle die (3), a third flow channel (12) is provided between the middle die (3) and the lower middle die (4), a fourth flow channel (13) is provided between the lower middle die (4) and the lower die (5), an upper extrusion channel (14) is provided between the upper die lip (6) and the die core (9), a lower extrusion channel (15) is provided between the lower die lip (7) and the die core (9), the upper extrusion channel (14) is connected to the first flow channel (10), and the lower extrusion channel (15) is connected to the fourth flow channel (13). 3) are connected, the mold core (9) is provided with two independent extrusion channels a (91) and b (92) from the back to the front, the guide insert (8) is provided with an upward channel (81) and a downward channel (82) that are independent of each other, the second flow channel (11), the upward channel (81), and the extrusion channel a (91) are connected, and the third flow channel (12), the downward channel (82), and the extrusion channel b (92) are connected; the primary color raw material enters from the first flow channel (10) and the fourth flow channel (13) and passes through the upper extrusion channel (14) and the lower extrusion channel (15) respectively. The A-color raw material enters from the second flow channel (11), passes through the upward channel (81), and is then extruded from the a extrusion channel (91); the B-color raw material enters from the third flow channel (12), passes through the downward channel (82), and is then extruded from the b extrusion channel (92); a vertical rib feed channel (93) is provided in the mold core (9); the vertical rib feed channel (93) is connected to the upper extrusion channel (14) or the lower extrusion channel (15); the primary color raw material is extruded from the vertical rib feed channel (93) to form vertical ribs to support the transverse thin-walled plate formed by the extrusion of the A-color raw material and the B-color raw material.

2. The die head for three-color hollow grid plates containing inserts according to claim 1, characterized in that: The front portion of the extrusion channel a (91) is a straight section, and the rear portion is an inclined section that inclines downward from the rear to the front while the inner diameter of the channel gradually decreases; the front portion of the extrusion channel b (92) is a straight section, and the rear portion is an inclined section that inclines upward from the rear to the front while the inner diameter of the channel gradually decreases; the extrusion channel a (91) and the extrusion channel b (92) are symmetrically arranged up and down about the center line of the mold core (9).

3. The die head for hollow grid plates with three colors and special shapes containing inserts according to claim 1, characterized in that: Buffer grooves (16) for decelerating the raw material are arranged along the width direction at the feed ends of the upward channel (81) and the downward channel (82); the buffer grooves (16) at the upward channel (81) are formed by expanding the diameter at the intersection of the guide insert (8), the upper middle mold (2) and the middle mold (3); and the buffer grooves (16) at the downward channel (82) are formed by expanding the diameter at the intersection of the guide insert (8), the lower middle mold (4) and the middle mold (3).

4. The die head for hollow grid plates with three colors and special shapes containing inserts according to claim 1, characterized in that: The upper die lip (6) and the lower die lip (7) are both provided with a deformation groove (17) and a push-pull type fine adjustment device (18).

5. The die head for hollow grid plates with three colors and special shapes containing inserts according to claim 1, characterized in that: The push-pull fine-tuning device (18) comprises a fixed pressure block (181) fixedly connected to the surface of the upper die lip (6) and / or the lower die lip (7), the fixed pressure block (181) being provided with a through hole, the fixed nut (182) passing through the through hole of the fixed pressure block (181) and then being fixed to the corresponding die lip through the fixed pressure block (181) and being limited by a flat key to prevent rotation, the fixed nut (182) being internally threadedly connected to an adjusting nut (183), the adjusting nut (183) being internally threadedly connected to an adjusting screw (184), the front end of the adjusting screw (184) being connected to a pull rod (185), the pull rod (185) passing through the inner hole of the corresponding die lip and the deformation groove (17) and then being connected to the die lip inside the deformation groove (17), the pitch of the external thread of the adjusting nut (183) being greater than the pitch of the internal thread; turning the adjusting nut (183) pushes the adjusting screw (184) forward or backward by means of a differential thread.

6. The die head for hollow grid plates with three colors and special shapes containing inserts according to claim 1, characterized in that: The pitch of the external thread of the adjusting nut (183) is 3.5 mm, the pitch of the internal thread of the adjusting nut (183) is 2.5 mm, and the adjusting nut (183) rotates one circle to push the adjusting screw rod (184) forward or backward by 1 mm.

Images