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] A two-color, special-shaped hollow grid sheet die is used to produce two-color, special-shaped hollow grid sheets. It allows for the injection of colored plastics, resulting in a two-color or multi-layered appearance for the final product. Hollow grid sheets are commonly used in construction, decoration, and other applications requiring lightweight yet high-strength materials. This die design demands high standards, ensuring smooth mixing and accurate molding of the two plastics. Existing two-color hollow grid sheets are typically produced using an assembled assembly method, which is inefficient and costly. Summary of the Invention

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

[0004] The technical solution of the present invention is a die head for a double-color, special-shaped hollow grid plate containing an insert, 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 an installation groove along the width direction, a guide insert is provided in the installation groove, 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 provided between the upper die and the upper middle die, a second flow channel is provided between the upper middle die and the lower middle die, a third flow channel is provided between the lower middle die and the lower die, an upper extrusion channel is provided between the upper die lip and the die core, a lower extrusion channel is provided between the lower die lip and the die core, the The upper extrusion channel is connected with the first flow channel, and 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, and a guide channel is arranged in the guide insert. The intermediate extrusion channel, the guide channel and the second flow channel are connected with each other; 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. The primary color raw materials are extruded from the vertical rib feed channel to form vertical ribs to support the horizontal 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, the rear part is an inclined section, and it is inclined downward from the back to the front while the inner diameter of the channel gradually decreases; the front part of the extrusion channel b is a straight section, the rear part is an inclined section, and it is inclined upward from the back to the front while 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 fixing 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 internal thread of the fixed nut is connected to an adjusting nut, the internal thread of the adjusting nut is connected to an adjusting screw, 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 a hollow lattice 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;

[0012] Figure 2 for Figure 1 Structural diagram from another perspective;

[0013] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0014] Figure 4 It is a structural schematic diagram of the push-pull fine-tuning device in the present invention;

[0015] 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—guide insert; 71—guide channel; 711—upper extension channel; 712—lower extension channel; 8—die core; 81—middle extrusion channel; 82—vertical rib feed 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

[0016] The present invention will be described in further detail below with reference to the accompanying drawings.

[0017] 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, and the front end of the lower die 4 is connected to a lower die lip 6. The lower front end portion of the upper middle die 2 and the upper front end portion of the lower middle die 3 are provided with a mounting groove along the width direction, and a guide insert 7 is provided in the mounting groove. The front end surfaces of the upper middle die 2 and the lower middle die 3 are connected to a mold core 8, a first flow channel 9 is provided between the upper die 1 and the upper middle die 2, 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 mold core 8, a lower extrusion channel 13 is provided between the lower die lip 6 and the mold 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 provided inside the mold core 8 from back to front, a guide channel 71 is provided in the guide insert 7, and the intermediate extrusion channel 81, the guide channel 71 and the second flow channel 10 are connected to each other; the primary color raw materials enter from the first flow channel 9 and the third flow channel 11 and are extruded through the upper extrusion channel 12 and the lower extrusion channel 13 respectively, and the colored raw materials enter from the second flow channel 10 and pass through the guide channel 71 and are extruded from the intermediate extrusion channel 81; a vertical rib feed channel 82 is provided in the mold 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 materials are extruded from the vertical rib feed channel 82 to form vertical ribs to support the transverse thin-walled plate for extrusion of the colored raw materials.

[0018] 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 intermediate 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 and the upper extension channel 711 are connected, and the extrusion channel b 812 and the lower extension channel 712 are connected.

[0019] Specifically, the front part of the extrusion channel a 811 is a straight section, the rear part is an inclined section, and it 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, the rear part is an inclined section, and it 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.

[0020] 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 fine-tuning device 15 .

[0021] 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 internal thread of the fixed nut 152 is connected to the adjusting nut 153, and the internal thread of the adjusting nut 153 is connected to the 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.

[0022] Furthermore, the pitch of the external thread of the adjusting nut 153 is 3.5 mm, and the pitch of the internal thread of the adjusting nut 153 is 2.5 mm. The adjusting nut 153 rotates one circle to push the adjusting screw 154 forward or backward by 1 mm.

[0023] 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 feed 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 colored raw material in the middle is a horizontal thin-wall structure, and the primary color raw materials at the top and bottom are horizontal thin-wall structures. The two are connected as one 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.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the invention. Any simple modification, equivalent change or modification made to the above embodiment 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 by: The invention comprises an upper mold (1), an upper middle mold (2), a lower middle mold (3) and a lower mold (4), wherein the front end of the upper mold (1) is connected to an upper mold lip (5), the front end of the lower mold (4) is connected to a lower mold lip (6), the lower front end of the upper middle mold (2) and the upper front end of the lower middle mold (3) are provided with mounting grooves along the width direction, and a guide insert (7) is provided in the mounting grooves, the front end surfaces of the upper middle mold (2) and the lower middle mold (3) are connected to a mold core (8), the upper mold (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. The first and second flow channels (9) are connected, the lower extrusion channel (13) is connected to the third flow channel (11), an intermediate extrusion channel (81) is provided inside the mold core (8) from back to front, a guide channel (71) is provided inside the guide insert (7), and the intermediate extrusion channel (81), the guide channel (71), and the second flow channel (10) are connected to 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 provided inside the mold core (8), and the vertical rib feed channel (82) is connected to 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.

2. The die head for double-color hollow grid plates containing inserts according to claim 1, characterized in that: The guide channel (71) in the guide insert (7) extends from the back to the front toward the upper and lower sides 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 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).

3. The die head for double-color hollow grid plates containing inserts according to claim 2, characterized in that: The front portion of the extrusion channel a (811) is a straight section, and the rear portion is an inclined section that is inclined downward from the rear to the front while the inner diameter of the channel gradually decreases; the front portion of the extrusion channel b (812) is a straight section, and the rear portion is an inclined section that is inclined upward from the rear 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 die head for double-color hollow grid plates containing inserts 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 fine-tuning device (15).

5. The die head for double-color hollow grid plates containing inserts according to claim 4, characterized in that: 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, 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), 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), 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 thread.

6. The die head for double-color hollow grid plates containing inserts according to claim 5, characterized in that: The pitch of the external thread of the adjusting nut (153) is 3.5 mm, and the pitch of the internal thread of the adjusting nut (153) is 2.5 mm. One rotation of the adjusting nut (153) pushes the adjusting screw (154) forward or backward by 1 mm.

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