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

Abstract

The mold head comprises an upper mold, an upper middle mold, a lower middle mold and a lower mold, an upper mold lip is connected to the front end of the upper mold, a lower mold lip is connected to the front end of the lower mold, mounting grooves are formed in the lower portion of the front end of the upper middle mold and the upper portion of the front end of the lower middle mold in the breadth direction, and flow guide inserts are arranged in the mounting grooves. The front end face of the upper middle die and the front end face of the lower middle die are connected with a die core, a first runner is arranged between the upper die and the upper middle die, a second runner is arranged between the upper middle die and the lower middle die, a third runner 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, and 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, the lower extrusion channel is communicated with the third flow channel, a middle extrusion channel is arranged in the mold core from back to front, a flow guide channel is arranged in the flow guide insert, and the middle extrusion channel, the flow guide channel and the second flow channel are communicated with one another. The double-color special-shaped hollow grid plate product can be extruded.

Description

Technical Field

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

[0002] The two-color special-shaped hollow lattice die is a mold used to produce two-color special-shaped hollow lattice. It allows the injection of plastic containing color, and through the design of the die, the final product has a two-color or multi-layered appearance. Hollow lattice is 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 two-color hollow lattice is usually assembled, which has low production efficiency and high production cost. Summary of the invention

[0003] In view of the above problems, the present invention aims to provide an insert-containing two-color special-shaped hollow grid plate die head, which can extrude two-color special-shaped hollow grid plate products.

[0004] The technical solution of the present invention is an insert-containing two-color special-shaped hollow grid plate die head, comprising an upper die, an upper middle die, a lower middle die and a lower die, the front end of the upper die is connected to an upper die lip, the front end of the lower die is connected to a lower die lip, the lower part of the front end of the upper middle die and the upper part of the front end of the lower middle die are provided with mounting grooves along the width direction, guide inserts are arranged in the mounting grooves, the front end surfaces of the upper middle die and the lower middle die are connected to 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 lower middle die, a third 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, and the The upper extrusion channel is connected with the first flow channel, the lower extrusion channel is connected with the third flow channel, an intermediate extrusion channel is arranged inside the mold core from back to front, a guide channel is arranged in the guide insert, and the intermediate extrusion channel, the guide channel and the second flow channel are interconnected; the primary color raw materials enter from the first flow channel and the third flow channel and are extruded through the upper extrusion channel and the lower extrusion channel respectively, and the colored raw materials enter from the second flow channel and are extruded from the intermediate extrusion channel after passing through the guide 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, and the primary color raw materials are extruded from the vertical rib feed channel to form vertical ribs to support the transverse thin-walled plate for extrusion of the colored raw materials.

[0005] Preferably, the guide channel in the guide insert extends from back to front to the upper and lower sides respectively to form an upper extension channel and a lower extension channel, and the middle extrusion channel in the mold core includes two independent upper and lower extrusion channels a and b, the extrusion channel a is connected to the upper extension channel, and the extrusion channel b is connected to the lower extension channel.

[0006] 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.

[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 one rotation of the adjusting nut pushes the adjusting screw forward or backward by 1 mm.

[0010] The present invention can extrude a hollow grid plate with a double-color special-shaped structure, and can adjust the die lip gap according to actual production needs to produce products of 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 for Figure 1 A schematic diagram of the structure from another perspective; 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—lower middle die; 4—lower die; 5—upper die lip; 6—lower die lip; 7—flow guide insert; 71—flow guide channel; 711—upper extension channel; 712—lower extension channel; 8—mold core; 81—middle extrusion channel; 82—vertical rib feeding channel; 811—a extrusion channel; 812—b extrusion channel; 9—first flow channel; 10—second flow channel; 11—third flow channel; 12—upper extrusion channel; 13—lower extrusion channel; 14—deformation groove; 15—push-pull fine-tuning device; 151—fixed pressure block; 152—fixed nut; 153—adjusting nut; 154—adjusting screw; 155—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 die head for a double-color special-shaped hollow grid plate containing an insert, comprising an upper die 1, an upper middle die 2, a lower middle die 3 and a lower die 4, wherein the front end of the upper die 1 is connected to an upper die lip 5, the front end of the lower die 4 is connected to a lower die lip 6, the lower front end of the upper middle die 2 and the upper front end of the lower middle die 3 are provided with mounting grooves along the width direction, and guide inserts 7 are arranged in the mounting grooves, the front end surfaces of the upper middle die 2 and the lower middle die 3 are connected to a die core 8, a first flow channel 9 is arranged between the upper die 1 and the upper middle die 2, a second flow channel 10 is arranged between the upper middle die 2 and the lower middle die 3, a third flow channel 11 is arranged between the lower middle die 3 and the lower die 4, an upper extrusion channel 12 is arranged between the upper die lip 5 and the die core 8, a lower extrusion channel 13 is arranged between the lower die lip 6 and the die core 8, and the upper extrusion channel 12 is connected with the first flow channel 9, the lower extrusion channel 13 is connected with the third flow channel 11, an intermediate extrusion channel 81 is arranged inside the core 8 from back to front, a guide channel 71 is arranged in the guide insert 7, and the intermediate extrusion channel 81, the guide channel 71 and the second flow channel 10 are connected with each other; the primary color raw material enters from the first flow channel 9 and the third flow channel 11 and is extruded through the upper extrusion channel 12 and the lower extrusion channel 13 respectively, and the colored raw material enters from the second flow channel 10 and passes through the guide channel 71 and is extruded from the intermediate extrusion channel 81; a vertical rib feed channel 82 is arranged in the core 8, and the vertical rib feed channel 82 is connected with the upper extrusion channel 12 or the lower extrusion channel 13, and the primary color raw material is extruded from the vertical rib feed channel 82 to form vertical ribs to support the transverse thin-walled plate extruded by the colored raw material.

[0014] On the basis of the above scheme, the guide channel 71 in the guide insert 7 extends from the back to the front to the upper and lower sides respectively to form an upper extension channel 711 and a lower extension channel 712, and the middle extrusion channel 81 in the mold core 8 includes two independent upper and lower extrusion channels a 811 and b extrusion channels 812, the extrusion channel a 811 is connected to the upper extension channel 711, and the extrusion channel b 812 is connected to the lower extension channel 712.

[0015] Specifically, the front part of the extrusion channel a 811 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 812 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 811 and the extrusion channel b 812 are symmetrically arranged up and down about the center line of the mold core 8.

[0016] In addition, the upper die lip 5 and the lower die lip 6 are both provided with a deformation groove 14 and a push-pull type fine adjustment device 15 .

[0017] Specifically, the push-pull fine-tuning device 15 includes a fixed pressure block 151 fixedly connected to the surface of the upper die lip 5 and / or the lower die lip 6, the fixed pressure block 151 is provided with a through hole, and the fixing nut 152 passes through the through hole of the fixed pressure block 151 and is fixed to the corresponding die lip through the fixed pressure block 151 and is limited by a flat key to prevent rotation, the fixing nut 152 is internally threadedly connected with an adjusting nut 153, and the adjusting nut 153 is internally threadedly connected with an adjusting screw 154, the front end of the adjusting screw 154 is connected to the pull rod 155, and the pull rod 155 passes through the inner hole of the corresponding die lip and the deformation groove 14 and is connected to the die lip inside the deformation groove 14, the pitch of the external thread of the adjusting nut 153 is greater than the pitch of the internal thread; turning the adjusting nut 153 pushes the adjusting screw 154 forward or backward by means of differential threads.

[0018] Furthermore, the pitch of the external thread of the adjusting nut 153 is 3.5 mm, the pitch of the internal thread of the adjusting nut 153 is 2.5 mm, and the adjusting nut 153 rotates one circle to push the adjusting screw 154 forward or backward by 1 mm.

[0019] In the present invention, the primary color raw materials enter from the first flow channel 9 and the third flow channel 11 respectively, and enter the upper extrusion channel 12, the lower extrusion channel 13, and the vertical rib feeding channel 82 respectively. The colored raw materials enter from the second flow channel 10, pass through the guide channel 71, and are extruded from the middle extrusion channel 81. In the final product, the middle colored raw material is a transverse thin-wall structure, and the primary color raw materials at the top and bottom are transverse thin-wall structures. The two are connected as a whole through the vertical rib structure of the primary color raw materials, and finally a product with a two-color special-shaped hollow lattice structure 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 die head for double-color and special-shaped hollow grid plates containing inserts, characterized in that: The invention comprises an upper die (1), an upper middle die (2), a lower middle die (3) and a lower die (4), wherein the front end of the upper die (1) is connected to an upper die lip (5), the front end of the lower die (4) is connected to a lower die lip (6), the lower front end of the upper middle die (2) and the upper front end of the lower middle die (3) are provided with mounting grooves along the width direction, guide inserts (7) are arranged in the mounting grooves, the front end surfaces of the upper middle die (2) and the lower middle die (3) are connected to a die core (8), the upper die (1) ) and the upper middle die (2), a first flow channel (9) is provided between the upper middle die (2) and the lower middle die (3), a second flow channel (10) is provided between the upper middle die (2) and the lower middle die (3), a third flow channel (11) is provided between the lower middle die (3) and the lower die (4), an upper extrusion channel (12) is provided between the upper die lip (5) and the die core (8), a lower extrusion channel (13) is provided between the lower die lip (6) and the die core (8), and the upper extrusion channel (12) is connected to the first flow channel (9). The mold core (8) is connected with the first flow channel (9), the lower extrusion channel (13) is connected with the third flow channel (11), an intermediate extrusion channel (81) is arranged inside the mold core (8) from the back to the front, a guide channel (71) is arranged inside the guide insert (7), and the intermediate extrusion channel (81), the guide channel (71) and the second flow channel (10) are connected with each other; the primary color raw material enters from the first flow channel (9) and the third flow channel (11) and is extruded through the upper extrusion channel (12) and the lower extrusion channel (13) respectively, and the colored raw material enters from the second flow channel (10) and passes through the guide channel (71) and is extruded from the intermediate extrusion channel (81); a vertical rib feeding channel (82) is arranged inside the mold core (8), and the vertical rib feeding channel (82) is connected with the upper extrusion channel (12) or the lower extrusion channel (13); the primary color raw material is extruded from the vertical rib feeding channel (82) to form vertical ribs to support the transverse thin-walled plate extruded by the colored raw material.

2. The insert-containing two-color special-shaped hollow grid plate die head according to claim 1, characterized in that: The guide channel (71) in the guide insert (7) extends from the back to the front to the upper and lower sides respectively to form an upper extension channel (711) and a lower extension channel (712); the middle extrusion channel (81) in the mold core (8) includes two upper and lower independent extrusion channels a (811) and b extrusion channels (812); the extrusion channel a (811) is connected to the upper extension channel (711), and the extrusion channel b (812) is connected to the lower extension channel (712).

3. The insert-type double-color special-shaped hollow grid plate die head according to claim 2, characterized in that: The front part of the extrusion channel a (811) is a straight section, and the rear part is an inclined section that inclines downward from the back to the front, while the inner diameter of the channel gradually decreases; the front part of the extrusion channel b (812) is a straight section, and the rear part is an inclined section that inclines upward from the back to the front, while the inner diameter of the channel gradually decreases; the extrusion channel a (811) and the extrusion channel b (812) are symmetrically arranged up and down about the center line of the mold core (8).

4. The insert-containing two-color special-shaped hollow grid plate die head according to claim 1, characterized in that: The upper die lip (5) and the lower die lip (6) are both provided with a deformation groove (14) and a push-pull type fine adjustment device (15).

5. The insert-type double-color special-shaped hollow grid plate die head according to claim 4, characterized in that: The push-pull fine-tuning device (15) comprises a fixed pressure block (151) fixedly connected to the surface of the upper die lip (5) and / or the lower die lip (6), wherein the fixed pressure block (151) is provided with a through hole, and the fixed nut (152) passes through the through hole of the fixed pressure block (151) and is fixed to the corresponding die lip through the fixed pressure block (151) and is limited by a flat key to prevent rotation, the fixed nut (152) is internally threadedly connected to an adjusting nut (153), and the adjusting nut (153) is internally threadedly connected to an adjusting screw (154), the front end of the adjusting screw (154) is connected to a pull rod (155), and the pull rod (155) passes through the inner hole of the corresponding die lip and the deformation groove (14) and is connected to the die lip inside the deformation groove (14), and the pitch of the external thread of the adjusting nut (153) is greater than the pitch of the internal thread; the adjusting nut (153) is turned to push the adjusting screw (154) forward or backward by means of a differential thread.

6. The insert-containing two-color special-shaped hollow grid plate die head according to claim 5, characterized in that: The pitch of the external thread of the adjusting nut (153) is 3.5 mm, the pitch of the internal thread of the adjusting nut (153) is 2.5 mm, and one rotation of the adjusting nut (153) pushes the adjusting screw rod (154) forward or backward by 1 mm.

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