Insert-containing type three-color special-shaped hollow grid plate die head
By designing a die head for three-color special-shaped hollow gratings with inserts, the problems of low production efficiency and high cost of existing dies are solved, and efficient production of three-color special-shaped hollow gratings is achieved. The die head has an adjustment function to adapt to different thickness requirements and ensure product uniformity.
Patent Information
- Application Number
- CN202422878649.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The existing three-color hollow grid plate die head has low production efficiency and high cost, and it is difficult to achieve smooth mixing and accurate molding of the two plastics.
The die head with inserts for three-color special-shaped hollow grid plates is used. Through the design of upper and lower dies and middle dies, multiple flow channels and extrusion channels are set. Combined with guide inserts and fine-tuning devices, the independent conveying and mixing of the two raw materials are ensured to form three-color special-shaped hollow grid plates.
It improves production efficiency, reduces production costs, and can adjust the die lip gap as needed to produce products of different thicknesses to ensure product uniformity.
Smart Images
Figure CN223420028U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a die head, in particular to an insert-type three-color special-shaped hollow grid plate die head. Background Art
[0002] A die head for three-color, custom-shaped hollow grid sheeting is used to produce three-color, custom-shaped hollow grid sheeting. It allows for the simultaneous injection of two different plastic colors, combined with the original raw material color. Through die design, the final product achieves a three-color or multi-layered appearance. Hollow grid sheeting is commonly used in construction, decoration, and other applications requiring lightweight yet high-strength materials. This die head requires high design requirements to ensure smooth mixing and accurate molding of the two plastics. Existing three-color hollow grid sheeting is typically produced using an assembled assembly process, which is inefficient and costly. 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 an insert type, 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, which is characterized in that: it includes 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, and a guide insert is provided 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 provided between the upper die and the upper middle die, a second flow channel is provided between the upper middle die and the intermediate die, a third flow channel is provided between the intermediate die and the lower middle die, a fourth 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 upper extrusion channel is connected to the first flow channel, and the The lower extrusion channel is connected with the fourth flow channel. 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 and downward channels. The second flow channel, the upward channel, and the extrusion channel a are connected. 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 provided in the mold core. 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, 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.
[0006] Preferably, a buffer groove for slowing down the raw material is provided at the feed end of the upward channel and the downward channel along the width direction. 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 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 three-color special-shaped hollow grid plate products, and the die lip gap can be adjusted 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] Fig. 1 It is a structural schematic diagram of the present invention;
[0012] Fig. 2 A structural diagram of another perspective of the present invention;
[0013] Fig. 3 It is a schematic diagram of the internal cross-sectional structure of the present invention;
[0014] Fig. 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—intermediate 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—die core; 91—extrusion channel a; 92—extrusion channel b; 93—vertical rib feed 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
[0016] The present invention will be described in further detail below with reference to the accompanying drawings.
[0017] like Figs. 1 to 4 As shown, the present invention provides a die head for a three-color special-shaped hollow grid plate 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. The front end of the upper die 1 is connected to an upper die lip 6, and 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, and a guide insert 8 is provided 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. 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 intermediate die 3, a third flow channel 12 is provided between the intermediate 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 first flow channel 10. 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 and passes through the upper extrusion channel 14 and the lower extrusion channel respectively. Channel 15 is extruded, the A color raw material enters from the second flow channel 11 through the ascending channel 81 and is extruded from the a extrusion channel 91, and the B color raw material enters from the third flow channel 12 through the descending channel 82 and is extruded from the b extrusion channel 92; a vertical rib feed channel 93 is provided in the mold core 9, and the vertical rib feed channel 93 is connected with the upper extrusion channel 14 or the lower extrusion channel 15, and the primary color raw materials are extruded from the vertical rib feed channel 93 to form vertical ribs to support the horizontal thin-walled plate formed by the extrusion of the A color raw material and the B color raw material.
[0018] In the above scheme, the front part of the extrusion channel a 91 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 92 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 91 and the extrusion channel b 92 are symmetrically arranged up and down about the center line of the mold core 9.
[0019] Specifically, a buffer groove 16 for slowing down the raw material is provided at the feed end of the upward channel 81 and the downward channel 82 along the width direction. The buffer groove 16 at the upward channel 81 is formed by expanding the diameter at the intersection 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 intersection of the guide insert 8, the lower middle mold 4, and the middle mold 3.
[0020] 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 fine-tuning device 18 .
[0021] 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, and the fixed pressure block 181 is provided with a through hole. 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 internal thread of the fixed nut 182 is connected to the adjusting nut 183, and the internal thread of the adjusting nut 183 is connected to the 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.
[0022] Specifically, the pitch of the external thread of the adjusting nut 183 is 3.5 mm, and the pitch of the internal thread of the adjusting nut 183 is 2.5 mm. The adjusting nut 183 rotates one circle to push the adjusting screw 184 forward or backward by 1 mm.
[0023] In the present application, the primary color raw materials enter from the first flow channel 10 and the fourth flow channel 13 respectively, are extruded through the upper extrusion channel 14 and the lower extrusion channel 15 respectively, and form the primary color raw material thin-wall plates in the top and bottom transverse directions, the A color raw material enters from the second flow channel 11, is extruded from the a extrusion channel 91 after passing through the upper flow channel 81, and forms the A color raw material thin-wall plate in the transverse direction, the B color raw material enters from the third flow channel 12, is extruded from the b extrusion channel 92 after passing through the lower flow channel 82, and forms the B color raw material thin-wall plate in the transverse direction, the primary color raw materials are extruded from the vertical rib feeding channel 93 at the same time, and form the vertical connecting ribs, the vertical connecting ribs of the primary color raw materials support the A color raw material thin-wall plate and the B color raw material thin-wall plate, the extruded products of the above four parts are connected into an integrated structure, and finally the three-color special-shaped hollow lattice plate is formed.
[0024] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change or modification made according to the technical principles of the present application to the above embodiment still belongs to the scope of the technical solutions of the present application.
Claims
1. A die head for hollow grid plates with three colors and special shapes containing inserts, characterized by: 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, and a flow guide insert (8) is provided 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), and a first flow guide insert (8) 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 communicated with the first flow channel (10), the lower extrusion channel (15) is communicated with the fourth flow channel (1 3) are connected, 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 an independent upward channel (81) and downward channel (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 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 the second flow channel (11) through the ascending channel (81) and is extruded from the a extrusion channel (91); the B-color raw material enters the third flow channel (12) through the descending channel (82) and is extruded from the b extrusion channel (92); a vertical rib feed channel (93) is provided in the mold core (9), and 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.
2. The die head for hollow grid plates with three colors and special shapes 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 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 (92) 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 (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 slowing down the raw material are provided at the feed ends of the upward channel (81) and the downward channel (82) along the width direction. 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 die (2), and the middle die (3); and 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 die (4), and the middle die (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 fine-tuning device (18).
5. The die head for hollow grid plates with three colors and special shapes containing inserts according to claim 4, characterized in that: 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, the fixed 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 fixed nut (182) is internally threadedly connected to an adjusting nut (183), the adjusting nut (183) is internally threadedly connected to an adjusting screw (184), the front end of the adjusting screw (184) is connected to a pull rod (185), 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 a differential thread.
6. The die head for three-color special-shaped hollow grid plates containing inserts according to claim 5, characterized in that: The pitch of the external thread of the adjusting nut (183) is 3.5 mm, and the pitch of the internal thread of the adjusting nut (183) is 2.5 mm. One rotation of the adjusting nut (183) pushes the adjusting screw (184) forward or backward by 1 mm.