Flat-extrusion five-color mold capable of adjusting width of color strip on line

Abstract

The invention provides a flat extrusion five-color on-line color strip width adjusting die which comprises an upper die body, an upper die lip, a lower die body, a lower die lip, a left side plate assembly and a right side plate assembly, a shaping extrusion channel is formed between the upper die lip and the lower die lip, five independent material runners are arranged at different width positions between the upper die body and the lower die body in the front-back direction, and the five independent material runners are communicated with the left side plate assembly and the right side plate assembly. An adjusting baffle mounting groove penetrating through the breadth direction is formed in the front area of the bottom face of the upper die body and the top face of the lower die body, four flow choking blocks for separating the five material flow channels are sequentially arranged in the adjusting baffle mounting groove in the breadth direction, and a first adjusting mechanism is connected to the position of the left side plate assembly to adjust the two flow choking blocks on the left side to move left and right; the right side plate assembly is connected with a second adjusting mechanism to adjust the two flow stopping blocks on the right side to move left and right. And the five raw materials are extruded from the front shaping extrusion channel after the widths of the five raw materials are adjusted by the four flow choking blocks. The width of the color bar can be flexibly adjusted, color crossing can be effectively prevented, and it is ensured that the boundary of the color bar is clear.

Description

Technical Field

[0001] This invention relates to the field of extrusion die technology, and in particular to a flat extrusion five-color adjustable stripe width die. Background Technology

[0002] With the widespread use of plastic products in decoration, building materials, and home furnishing, consumers are increasingly demanding higher aesthetic standards for product appearance. Multi-colored striped plastic profiles are highly favored due to their rich colors and excellent decorative effect.

[0003] Currently, the main methods for producing multi-color striped profiles include co-extrusion and post-processing (such as printing and lamination). Post-processing methods suffer from problems such as poor adhesion, easy fading, and complex processes. Traditional co-extrusion molds have complex structures, and different colored streams are prone to cross-contamination when they merge, resulting in blurred color stripe boundaries and low product yield. In addition, existing molds are difficult to flexibly adjust the width ratio and interface shape of each color stripe, requiring mold changes when producing products of different specifications, leading to high costs and low efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention aims to provide a flat extrusion five-color adjustable stripe width mold with a novel and reasonable structure. It can flexibly adjust the stripe width, effectively prevent color mixing, and ensure clear stripe boundaries.

[0005] The technical solution of this invention is a flat extrusion five-color adjustable stripe width mold, including an upper mold body, a lower mold body, a left side plate assembly, and a right side plate assembly. The upper mold body has an upper die lip at its front end, and the lower mold body has a lower die lip at its front end. A shaping extrusion channel is formed between the upper and lower die lips. The invention is characterized by: A material flow channel (A, B, C, D, and E) is sequentially arranged along the front-back direction between the upper and lower mold bodies at different width positions. An adjustment baffle mounting groove penetrating the width direction is provided on the bottom surface of the upper mold body and the top surface of the lower mold body in the front region. A first flow obstruction is sequentially arranged along the width direction within the adjustment baffle mounting groove. The system comprises a first flow-blocking block, a second flow-blocking block, a third flow-blocking block, and a fourth flow-blocking block. The first flow-blocking block is located between material A and material B; the second flow-blocking block is located between material B and material C; the third flow-blocking block is located between material C and material D; and the fourth flow-blocking block is located between material D and material E. A first adjustment mechanism is connected to the left side plate assembly to adjust the left and right movement of the first and second flow-blocking blocks, and a second adjustment mechanism is connected to the right side plate assembly to adjust the left and right movement of the third and fourth flow-blocking blocks. Materials A, B, C, D, and E are extruded from the front shaping extrusion channel after their widths are adjusted by the four flow-blocking blocks.

[0006] Preferably, the first adjustment mechanism includes a first bracket connected to the left side plate assembly. A first screw with a first rotating handle is rotatably mounted inside the first bracket. A first slider is threadedly connected to the first screw. The first slider has a threaded hole that engages with the threaded first screw, and the first slider is guided and limited by the first bracket. A first mounting portion extends from the lower end of the first slider. A first hollow rod is connected inside the first mounting portion. A first flow-blocking block is connected to the inner end of the first hollow rod. A first threaded rod passes through the first hollow rod. A second flow-blocking block is connected to the inner end of the first threaded rod. The outer end of the first threaded rod passes through the first mounting portion and is locked and adjusted by a first nut threadedly. Rotating the first rotating handle in either the forward or reverse direction controls the inward and outward translation of the first slider, thereby causing the first hollow rod and the first flow-blocking block to slide in and out. Rotating the first nut in either the forward or reverse direction controls the inward and outward movement of the first threaded rod, thereby causing the second flow-blocking block to move in and out.

[0007] Preferably, the second adjustment mechanism includes a second bracket connected to the right side plate assembly. A second screw with a second rotating handle is rotatably mounted inside the second bracket. A second slider is threadedly connected to the second screw. The second slider has a threaded hole that engages with the threaded second screw, and the second slider is guided and limited by the second bracket. A second mounting portion extends from the lower end of the second slider. A second hollow rod is connected inside the second mounting portion. A fourth flow-blocking block is connected to the inner end of the second hollow rod. A second threaded rod passes through the second hollow rod. A third flow-blocking block is connected to the inner end of the second threaded rod. The outer end of the second threaded rod passes through the second mounting portion and is locked and adjusted by a second nut threadedly. Rotating the second rotating handle in either the forward or reverse direction controls the inward and outward translation of the second slider, thereby causing the second hollow rod and the fourth flow-blocking block to slide in and out. Rotating the second nut in either the forward or reverse direction controls the inward and outward movement of the second threaded rod, thereby causing the third flow-blocking block to move in and out.

[0008] Preferably, a deformation groove is provided at the rear of the upper die lip, and a series of adjusting screws are provided on the top surface of the front end of the upper die body. The adjusting screws pass through the deformation groove and squeeze the upper die lip. The gap of the shaping extrusion channel is adjusted by tightening the adjusting screws to push the upper die lip to deform.

[0009] The present invention has the following beneficial effects: 1. Prevents color mixing and ensures clear boundaries: The pre-forming design of isolated main material channels and independent flow distribution units fundamentally avoids premature mixing of different colored molten materials in the mold, ensuring clear boundaries and pure colors between the color stripes in the final product.

[0010] 2. Flexible and adjustable, multi-purpose machine: Through the lead screw adjustment mechanism and adjustable die lip, the relative width and overall thickness of each color strip can be easily adjusted without changing the die, adapting to diverse and small-batch production needs and reducing production costs.

[0011] 3. Balanced flow rate and stable quality: The design of the flow obstruction block optimizes the pressure distribution and flow rate field within the flow channel, ensuring that each color strip is extruded at a consistent speed, avoiding defects such as profile bending and warping, and improving product quality stability.

[0012] 4. Compact structure and easy to process: The mold adopts a modular design, which not only facilitates machining and assembly, but also makes it easier to clean and maintain later. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one structure of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A structural diagram from another perspective; Figure 4 This is a schematic diagram of the internal flow channel and adjustment structure of the present invention from a top view. Figure 5 This is a cross-sectional view of the side structure of the present invention; Wherein: 1—Upper mold body; 1a—Upper mold lip; 1b—Deformation groove; 2—Lower mold body; 3—Left side plate assembly; 4—Right side plate assembly; 5—Shaping extrusion channel; 6—A material flow channel; 7—B material flow channel; 8—C material flow channel; 9—D material flow channel; 10—E material flow channel; 11—Adjusting baffle mounting groove; 12—First flow blocking block; 13—Second flow blocking block; 14—Third flow blocking block; 15—Fourth flow blocking block; 16—First bracket; 17—First rotating handle; 19—First slider; 191—First mounting part; 20—First hollow rod; 21—First threaded rod; 22—First nut; 23—Second bracket; 24—Second rotating handle; 26—Second slider; 261—Second mounting part; 27—Second hollow rod; 28—Second threaded rod; 29—Second nut; 30—Adjusting screw. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] like Figures 1 to 4As shown, this invention provides a flat extrusion five-color adjustable stripe width mold, including an upper mold body 1, a lower mold body 2, a left side plate assembly 3, and a right side plate assembly 4. The upper mold body 1 has an upper die lip 1a at its front end, and the lower mold body 2 has a lower die lip 2a at its front end. A shaping extrusion channel 5 is formed between the upper die lip 1a and the lower die lip 2a. The invention is characterized by: A material flow channel 6, a B material flow channel 7, a C material flow channel 8, a D material flow channel 9, and an E material flow channel 10 arranged sequentially along the front-back direction between the upper mold body 1 and the lower mold body 2 at different width positions. An adjusting baffle mounting groove 11 penetrating the width direction is provided on the bottom surface of the upper mold body 1 and the top surface of the lower mold body 2 in the front region. A first flow-blocking block 12 is sequentially arranged along the width direction within the adjusting baffle mounting groove 11. The system comprises a second flow-blocking block 13, a third flow-blocking block 14, and a fourth flow-blocking block 15. The first flow-blocking block 12 is located between material A flow channel 6 and material B flow channel 7. The second flow-blocking block 13 is located between material B flow channel 7 and material C flow channel 8. The third flow-blocking block 14 is located between material C flow channel 8 and material D flow channel 9. The fourth flow-blocking block 15 is located between material D flow channel 9 and material E flow channel 10. A first adjustment mechanism is connected to the left side plate assembly 3 to adjust the left and right movement of the first flow-blocking block 12 and the second flow-blocking block 13. A second adjustment mechanism is connected to the right side plate assembly 4 to adjust the left and right movement of the third flow-blocking block 14 and the fourth flow-blocking block 15. Materials A, B, C, D, and E are extruded from the front shaping extrusion channel 5 after their widths are adjusted by the above four flow-blocking blocks.

[0016] In the above scheme, the first adjustment mechanism includes a first bracket 16 connected to the left side plate assembly 3. A first screw with a first rotating handle 17 is rotatably mounted inside the first bracket 16. A first slider 19 is threadedly connected to the first screw. The first slider 19 has a threaded hole that engages with the threaded first screw, and the first slider 19 is guided and limited by the first bracket 16. A first mounting portion 191 extends from the lower end of the first slider 19. A first hollow rod 20 is connected inside the first mounting portion 191. A first... The flow-blocking block 12 has a first threaded rod 21 inserted inside the first hollow rod 20. The inner end of the first threaded rod 21 is connected to a second flow-blocking block 13. The outer end of the first threaded rod 21 passes through the first mounting part 191 and is locked and adjusted by the thread of the first nut 22. Rotating the first rotating handle 17 in the forward or reverse direction controls the translation of the first slider 19 in and out, thereby driving the first hollow rod 20 and the first flow-blocking block 12 to slide in and out. Rotating the first nut 22 in the forward or reverse direction controls the movement of the first threaded rod 21 in and out, thereby driving the movement of the second flow-blocking block 13 in and out.

[0017] Specifically, the second adjustment mechanism includes a second bracket 23 connected to the right side plate assembly 4. A second screw with a second rotating handle 24 is rotatably mounted inside the second bracket 23. A second slider 26 is threadedly connected to the second screw. The second slider 26 has a threaded hole that engages with the threaded second screw, and the second slider 26 is guided and limited by the second bracket 23. A second mounting portion 261 extends from the lower end of the second slider 26. A second hollow rod 27 is connected inside the second mounting portion 261. A fourth resistor is connected to the inner end of the second hollow rod 27. The flow block 15 has a second threaded rod 28 inserted inside the second hollow rod 27. The inner end of the second threaded rod 28 is connected to a third flow block 14. The outer end of the second threaded rod 28 passes through the second mounting part 261 and is locked and adjusted by the thread of the second nut 29. Rotating the second rotating handle 24 in the forward or reverse direction controls the translation of the second slider 26 in and out, thereby driving the second hollow rod 27 and the fourth flow block 15 to slide in and out. Rotating the second nut 29 in the forward or reverse direction controls the movement of the second threaded rod 28 in and out, thereby driving the movement of the third flow block 14 in and out.

[0018] Furthermore, a deformation groove 1b is provided at the rear of the upper die lip 1a, and a series of adjusting screws 30 are provided on the top surface of the front end of the upper die body 1, which are evenly distributed along the width direction. The adjusting screws 30 pass through the deformation groove 1b and squeeze the upper die lip 1a. By tightening the adjusting screws 30, the upper die lip 1a is pushed to deform, thereby adjusting the gap of the shaping extrusion channel 5.

[0019] The working principle of this invention is as follows: Material A enters from material A channel 6, material B from material B channel 7, material C from material C channel 8, material D from material D channel 9, and material E from material E channel 10. They flow forward to reach the regulating baffle mounting groove 11. The two ends of the regulating baffle mounting groove 11 are sealed by the left side plate assembly 3 and the right side plate assembly 4, respectively. The first flow blocking block 12, the second flow blocking block 13, the third flow blocking block 14, and the fourth flow blocking block 15 block different widths of the regulating baffle mounting groove 11. The first flow blocking block 12, the second flow blocking block 13, the third flow blocking block 14, the fourth flow blocking block 15, the left side plate assembly 3, and the right side plate assembly 4 work together to divide the regulating baffle mounting groove 11 into five independent width areas that are separated from each other. These five independent width areas correspond to materials A, B, C, D, and E, respectively.

[0020] The width of material A is adjusted by fixing the left boundary. The right boundary is determined by rotating the first rotating handle 17 to rotate the first screw, which in turn moves the first slider 19 inward or outward, thereby moving the first hollow rod 20 synchronously, and finally moving the first flow blocking block 12 inward or outward synchronously, thus determining the position of the right boundary of material A and the extrusion width.

[0021] The width adjustment of material B and the determination of its left boundary are achieved by rotating the first rotating handle 17 to rotate the first screw, which in turn moves the first slider 19 inward or outward, thereby causing the first hollow rod 20 to move synchronously, and finally causing the first flow-blocking block 12 to move synchronously inward or outward, thus determining the left boundary of material B. The right boundary is determined by rotating the first nut 22 in the forward or reverse direction to control the inward or outward movement of the first threaded rod 21, which in turn moves the second flow-blocking block 13 inward or outward, ultimately determining the extrusion width of material B and the positions of its left and right boundaries.

[0022] The width adjustment of material C is achieved by determining the left boundary through rotating the first nut 22 in either the forward or reverse direction, which controls the inward and outward movement of the first threaded rod 21, thereby causing the second flow-blocking block 13 to move in and outward, ultimately determining the left boundary position of material C. Similarly, the right boundary is determined by rotating the second nut 29 in either the forward or reverse direction, which controls the inward and outward movement of the second threaded rod 28, thereby causing the third flow-blocking block 14 to move in and outward, ultimately determining the right boundary position of material C. This process ultimately determines the extrusion width of material C and the positions of its left and right boundaries.

[0023] The width adjustment of material D is achieved by determining the left boundary through rotating the second nut 29 in either the forward or reverse direction to control the inward and outward movement of the second threaded rod 28, which in turn moves the third flow-blocking block 14 in and outward, ultimately determining the left boundary position of material D. The right boundary is determined by rotating the second rotating handle 24 in either the forward or reverse direction to control the inward and outward movement of the second slider 26, which in turn moves the second hollow rod 27 and the fourth flow-blocking block 15 in and outward, ultimately determining the right boundary position of material D. This process ultimately determines the extrusion width of material D and the positions of its left and right boundaries.

[0024] The width of material E is adjusted by fixing the right boundary. The left boundary is controlled by rotating the second rotating handle 24 in the forward or reverse direction to move the second slider 26 inward and outward, thereby driving the second hollow rod 27 and the fourth flow blocking block 15 to slide inward and outward, and finally determining the position of the left boundary of material E and the extrusion width.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A flat extrusion five-color on-line adjustable color strip width die, comprising an upper die body (1), a lower die body (2), a left side plate assembly (3) and a right side plate assembly (4), the upper die body (1) is provided with an upper die lip (1a) at the front end, the lower die body (2) is provided with a lower die lip (2a) at the front end, a shaping extrusion channel (5) is formed between the upper die lip (1a) and the lower die lip (2a), characterized in that: The upper die body (1) and the lower die body (2) are sequentially provided with A runner (6), B runner (7), C runner (8), D runner (9) and E runner (10) along the front-back direction at different width positions, the upper die body (1) bottom surface and the lower die body (2) top surface are provided with an adjusting baffle mounting slot (11) penetrating through the width direction in the front area, the adjusting baffle mounting slot (11) is sequentially provided with a first flow resistance block (12), a second flow resistance block (13), a third flow resistance block (14) and a fourth flow resistance block (15) along the width direction, the first flow resistance block (12) is located between the A runner (6) and the B runner (7), the second flow resistance block (13) is located between the B runner (7) and the C runner (8), the third flow resistance block (14) is located between the C runner (8) and the D runner (9), the fourth flow resistance block (15) is located between the D runner (9) and the E runner (10), the left side plate assembly (3) is connected with a first adjusting mechanism for adjusting the left and right movement of the first flow resistance block (12) and the second flow resistance block (13), the right side plate assembly (4) is connected with a second adjusting mechanism for adjusting the left and right movement of the third flow resistance block (14) and the fourth flow resistance block (15); A material, B material, C material, D material and E material are extruded from the front shaping extrusion channel (5) after the width is adjusted by the above four flow resistance blocks.

2. The five-color on-line adjustable width strip cast die according to claim 1, wherein: The first adjusting mechanism comprises a first support (16) connected to the left side plate assembly (3), a first screw rod with a first rotating handle (17) is rotatably installed in the first support (16), a first sliding block (19) is threadedly connected to the first screw rod, a threaded hole is provided in the first sliding block (19) and threadedly matched with the first screw rod, and the first sliding block (19) is guided and limited by the first support (16), a first mounting portion (191) extends downward from the first sliding block (19), a first hollow rod (20) is connected in the first mounting portion (191), the first flow resistance block (12) is connected to the inner end of the first hollow rod (20), a first threaded rod (21) is provided in the first hollow rod (20), the second flow resistance block (13) is connected to the inner end of the first threaded rod (21), and the outer end of the first threaded rod (21) is threadedly locked and adjusted by a first nut (22) after extending out of the first mounting portion (191); the first rotating handle (17) is rotated forward or reversely to control the inner and outer translation of the first sliding block (19), and then drive the inner and outer sliding of the first hollow rod (20) and the first flow resistance block (12); the first nut (22) is rotated forward or reversely to control the inner and outer movement of the first threaded rod (21), and then drive the inner and outer movement of the second flow resistance block (13).

3. The five-color on-line adjustable width strip cast die according to claim 2, wherein: The second adjusting mechanism comprises a second support (23) connected to the right side plate assembly (4), a second screw rod with a second rotating handle (24) is rotatably installed in the second support (23), a second sliding block (26) is threadedly connected to the second screw rod, a threaded hole is arranged in the second sliding block (26) and threadedly matched with the second screw rod, the second sliding block (26) is guided and limited by the second support (23), a second mounting portion (261) is extended from the lower end of the second sliding block (26), a second hollow rod (27) is connected to the second mounting portion (261), a fourth flow resistance block (15) is connected to the inner end of the second hollow rod (27), a second threaded rod (28) is arranged in the second hollow rod (27), a third flow resistance block (14) is connected to the inner end of the second threaded rod (28), and the outer end of the second threaded rod (28) is threadedly locked and adjusted by a second nut (29) after extending out of the second mounting portion (261); the second rotating handle (24) is rotated in a forward direction or a reverse direction to control the inner and outer translation of the second sliding block (26) and then drive the inner and outer sliding of the second hollow rod (27) and the fourth flow resistance block (15); the second nut (29) is rotated in a forward direction or a reverse direction to control the inner and outer movement of the second threaded rod (28) and then drive the inner and outer movement of the third flow resistance block (14).

4. The five-color on-line adjustable width striping cast film die of claim 1 wherein: The rear part of the upper die lip (1a) is provided with a deformation groove (1b), the front end top surface of the upper die body (1) is provided with a series of adjusting screw rods (30) which are uniformly distributed along the width direction, the adjusting screw rods (30) extrude the upper die lip (1a) after penetrating through the deformation groove (1b), and the gap of the shaping extrusion channel (5) is adjusted by deforming the upper die lip (1a) by tightening the adjusting screw rods (30).

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