TWI749597B - Forming mold for PVC foamed wood-like blade - Google Patents

Abstract

The present invention relates to a molding die for PVC foamed wood-like blades, which includes two main flow channels, which are symmetrically arranged with respect to a central axis and respectively have an inlet section and an outlet section, and two main flow channels. The inlet section of the two main flow channels is connected to an inlet, and the outlet sections of the two main flow channels are connected to an outlet port respectively. In addition, the length extension direction of the inlet section of the two main flow channels and the central axis respectively have an included angle. The total angle range is between 44.2-48.8 degrees. The cross-sectional width of the two main channels increases from the inlet to the outlet, and the cross-sectional height of the two main channels decreases from the inlet to the outlet. . Thereby, the molding die of the present invention can effectively improve the production efficiency and increase the stability of the product manufacturing process.

Description

Forming mold for PVC foamed wood-like blades

The present invention is related to blade molding equipment, and particularly refers to a molding die for polyvinyl chloride foamed wood-like blades.

In the past, curtain blades were mainly made of aluminum or iron thin slices that were processed into an arc-shaped section and then painted on the surface. However, such traditional blades have high raw material costs, heavy finished products, and easy heat absorption, resulting in poor heat insulation. And other shortcomings. In order to improve the above-mentioned problems, some companies have developed blades made of plastic materials such as polyvinyl chloride foam materials to achieve cost reduction, weight reduction, and good thermal insulation effects. However, the current molding dies used to manufacture PVC foam material blades mainly adopt a one-in-one-out design, that is, there is only one inlet and one outlet, which will lead to the problem of low production efficiency.

The main purpose of the present invention is to provide a molding die for PVC foamed wood-like blades, which can improve production efficiency.

In order to achieve the above main purpose, the molding die of the present invention includes one inlet, two outlets and two main runners. The main runners are symmetrically arranged with respect to a central axis and respectively have an inlet section and an outlet section. One of the inlet sections of the main runners The ends are jointly connected to the inlet, and there is a first included angle between the length extending direction of the inlet section of the main runners and the central axis, and the sum of the angles of the first included angles is between 44.2-48.8 degrees. In between, one end of the outlet section of the main runners is respectively connected with the discharge port. In addition, the cross-sectional width of the main runners gradually increases from the inlet toward the outlets, and the cross-sectional height of the main runners gradually decreases from the inlet toward the outlets. .

It can be seen from the above that the molding die of the present invention uses a one-in-two-out design, and then matches the symmetrical configuration of the main channels and a special angle change design, which can effectively improve the production efficiency and make the manufactured products have good quality stability.

Preferably, the cross-sectional width of the inlet section of each main flow channel is consistent from beginning to end, and the cross-sectional height of the inlet section of each main flow channel is consistent from beginning to end.

Preferably, the cross-sectional width of the outlet section of each main flow channel is consistent from beginning to end, and the length extension direction of each outlet section is parallel to the central axis, and the cross-sectional height of the outlet section of each main flow channel is consistent from beginning to end. .

Preferably, each main flow channel further has a connecting section before connecting the inlet section, a connecting section after connecting the outlet section, and a connecting section connected among the front and rear connecting sections, wherein: the front connecting sections The section height gradually decreases from the entrance section toward the middle connecting sections, and the section widths of the front connecting sections remain consistent from beginning to end, and the length extension direction of the front connecting sections is separated from the central axis. There is a second included angle, and the total range of the second included angles is between 36.9-61.9 degrees; the cross-sectional height of the middle connecting sections gradually decreases from the front connecting sections toward the rear connecting sections, and The cross-sectional width of the middle connecting section gradually increases from the front connecting section toward the rear connecting section, and the middle connecting section There is a third included angle between the length extension direction of the inner side wall of the connecting section and the central axis, and the sum of the angles of the third included angles is between 5.7-8.6 degrees, and the length of the side wall outside the middle connecting section There is a fourth included angle between the extension direction and the central axis, and the total angle of the fourth included angles is between 28.1-41.1 degrees; the cross-sectional heights of the rear connecting sections are from the middle connecting sections toward the The direction of the outlet section gradually decreases, and the cross-sectional width of the rear connecting sections remains consistent from beginning to end. With the above technical features, the polyvinyl chloride foam material can be quickly and stably passed through the main channels after being injected into the inlet, and then the shape of the product can be formed from the outlets.

Preferably, the forming mold further includes a secondary runner and two branch runners. The secondary runners are located between the connecting sections behind the main runners and extend downward from the top surface of the forming mold. One end of the branch runners respectively connects with a connecting section behind the main runner, and the other of the branch runners One end is connected to the bottom end of the secondary flow channel. With the above technical features, the skin material is injected into the secondary channel and flows through the branch channels to the connecting section after the main channel, and then mixed with the aforementioned polyvinyl chloride foam material to form the skin layer of the product.

The detailed structure, characteristics, assembling or use method of the molding die for the PVC foamed wood-like blade provided by the present invention will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of the present invention should be able to understand that these detailed descriptions and specific examples for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

10: Forming mold

12: Inlet

α: opening angle

14: Outlet

16: Mainstream

A: Central axis

18: Entry section

H1a: The cross-sectional height of the inner wall of the entrance section

H1b: The cross-sectional height of the side wall outside the entrance section

W1: Sectional width of the entrance section

20: Exit section

H2: The section height of the exit section

W2: the cross-sectional width of the exit section

θ1: The first included angle

22: Front connection section

H3: The section height of the front connecting section

W3: the cross-sectional width of the front connecting section

θ2: second included angle

24: Middle connecting section

H4: The section height of the middle connecting section

W4: the cross-sectional width of the middle connecting section

θ3: The third included angle

θ4: The fourth included angle

26: Rear connection section

H5: The section height of the rear connecting section

W5: the cross-sectional width of the rear connecting section

28: secondary runner

30: branch runner

32: The first module

34: The second module

36: The third module

38: fourth module

40: fifth module

42: sixth module

L1: The length of the first module

L2: The length of the second module

L3: The length of the third module

L4: Length of the fourth module

L5: The length of the fifth module

L6: The length of the sixth module

Fig. 1 is a top view of the molding die of the present invention.

Figure 2 is a side view of the molding die of the present invention.

3 is a top view of the first module and the second module provided by the molding die of the present invention.

Fig. 4 is an end view of the second module provided by the forming mold of the present invention.

5 is a side cross-sectional view of the first module and the second module provided by the molding die of the present invention.

Fig. 6 is a top view of the third module provided by the forming mold of the present invention.

Fig. 7 is an end view of the third module provided by the forming mold of the present invention.

Fig. 8 is a side cross-sectional view of the third module provided by the molding die of the present invention.

Fig. 9 is a top view of the fourth module provided by the molding die of the present invention.

Fig. 10 is an end view of the fourth module provided by the forming mold of the present invention.

11 is a side cross-sectional view of the fourth module provided by the molding die of the present invention.

Fig. 12 is a top view of the fifth module provided by the molding die of the present invention.

Figure 13 is an end view of the fifth module provided by the molding die of the present invention.

14 is a side cross-sectional view of the fifth module provided by the molding die of the present invention.

Fig. 15 is a top view of the sixth module provided by the molding die of the present invention.

Figure 16 is an end view of the sixth module provided by the molding die of the present invention.

Figure 17 is a side cross-sectional view of the sixth module provided by the molding die of the present invention.

The applicant first explains here that throughout the specification, including the following embodiments and claims in the scope of the patent application, the terms related to directionality are based on the directions in the drawings. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or their structural features.

Please refer to FIGS. 1 and 2. The forming mold 10 of the present invention has an inlet 12 and two outlets 14, wherein the inlet 12 has an opening angle α between 105 and 115 degrees (such as As shown in Figure 3). The molding die 10 of the present invention further has two main runners 16, which are symmetrically arranged with respect to a central axis A. The cross-sectional height of the two main runners 16 gradually decreases from the inlet 12 to the direction of the outlet 14 (e.g. 2), and the cross-sectional width of the two main runners 16 gradually increases from the inlet 12 to the outlet 14 (as shown in FIG. 1).

Furthermore, the two main runners 16 each have an inlet section 18, and one end of the two inlet sections 18 is connected to the inlet 12 together. As shown in FIGS. 4 and 5, the cross-sectional shape of the two inlet sections 18 is Trapezoid, the cross-sectional height H1a of the inner side wall of the two entrance sections 18 is 20mm, and the cross-sectional height H1b of the outer side wall of the two entrance sections 18 is 14.01mm, both of them are consistent from beginning to end. As for the cross section of the two entrance sections 18 The width W1 is also consistent from beginning to end (W1 is 42mm in this embodiment). In addition, as shown in Fig. 3, there is a first included angle θ1 between the length extension direction of the two inlet sections 18 and the central axis A, respectively, and the total angle range of the two first included angles θ1 is between 44.2-48.8 degrees ( The smallest sum of angles is 44.2 degrees, and the largest sum of angles is 48.8 degrees).

As shown in Figures 1 and 2, the two main runners 16 each have an outlet section 20. One end of the two outlet sections 20 is connected to an outlet 14 respectively. The cross-sectional shape of the two outlet sections 20 is rectangular, as shown in Figure 16. As shown in Figure 17, the cross-sectional height H2 of the two outlet sections 20 remains the same from beginning to end (H2 is 2.8mm in this embodiment), and the cross-sectional width W2 of the two outlet sections 20 remains the same from beginning to end (W2 is in In this embodiment, it is 51 mm). In addition, as shown in FIG. 15, the length extension direction of the two outlet sections 20 is parallel to the central axis A.

As shown in Figures 1 and 2, each main runner 16 further has a front connecting section 22, a middle connecting section 24 and a rear connecting section 26. One end of the front connecting section 22 is connected to the inlet section 18, and the middle connecting section 24 is connected to Between the front connecting section 22 and the rear connecting section 26, one end of the rear connecting section 26 is connected to the outlet section 20, where: as shown in Figures 7 and 8, the cross-sectional height H3 of the front connecting section 33 is connected to the center from the inlet section 18 The direction of the section 24 gradually decreases (H3 is reduced from 19.99 mm to 13.4 mm in this embodiment), and the cross-sectional width W3 of the front connecting section 22 remains the same from beginning to end (W3 is 44 mm in this embodiment). In addition, as shown in FIG. 6, there is a second included angle θ2 between the length extension direction of the two front connecting sections 22 and the central axis A respectively, and the sum of the angles of the two second included angles θ2 ranges between 36.9-61.9 degrees. (The smallest sum of angles is 36.9 degrees, and the largest sum of angles is 61.9 degrees).

As shown in Figures 10 and 11, the section height H4 of the middle connecting section 24 gradually decreases from the front connecting section 22 to the rear connecting section 26 (H4 is reduced from 13.4 mm to 8.4 mm in this embodiment), and the middle connecting section The cross-sectional width W4 of 24 gradually increases from the front connecting section 22 to the rear connecting section 26 (W4 increases from 44 mm to 51 mm in this embodiment). In addition, as shown in FIG. 9, the length extension direction of the inner side wall of the two middle connecting sections 24 and the central axis A are respectively separated from each other. There is a third included angle θ3, the sum of the angles of the two third included angles θ3 ranges between 5.7-8.6 degrees (the smallest sum of angles is 5.7 degrees, and the largest sum of angles is 8.6 degrees), and two middle connecting sections 24 There is a fourth included angle θ4 between the extension direction of the outer side wall and the central axis A. The sum of the two fourth included angles θ4 ranges between 28.1-41.1 degrees (the smallest angle sums 28.1 degrees, the largest angle The total is 41.1 degrees); as shown in Figures 12 to 14, the cross-sectional height H5 of the rear connecting section 26 gradually decreases from the middle connecting section 24 to the direction of the outlet section 20 (H5 is reduced from 8.2mm to 2.4mm in this embodiment ), and the cross-sectional width W5 of the two rear connecting sections 26 gradually increases from the middle connecting section 24 toward the outlet section 20 (W5 increases from 50.6 mm to 51 mm in this embodiment).

On the other hand, as shown in FIG. 1, the molding die 10 of the present invention is composed of six modules, and the five modules are sequentially from the first module 32, the second module 34, the third module 36, and the fourth module. 38. The fifth module 40 and the sixth module 42. In terms of length, the length L1 of the first module 32 is 70mm, the length L2 of the second module 34 is 25-35mm, the length L3 of the third module 36 is 20-30mm, and the length L4 of the fourth module 38 is 20-30mm. , The length L5 of the fifth module 40 is 25-30 mm, and the length of the sixth module L6 is 30-40. In addition, in terms of the configuration of the main runner 16, the inlet 12 is located in the first module 32, the inlet section 18 is located in the first module 32 and the second module 34, the front connecting section 22 is located in the third module 36, and the middle connecting section 24 is located in the second module. In the fourth module 38, the rear connecting section 26 is located in the fifth module 40, and the outlet section 20 is located in the sixth module 42.

In addition, as shown in FIGS. 1 and 2, the molding die 10 of the present invention further has a secondary runner 28 and two branch runners 30. The secondary runner 28 is located between the connecting section 26 behind the two primary runners 16 and extends from the fifth The top surface of the module 40 extends straight down, and one end of the two branch runners 30 share a common Same as the bottom end of the secondary flow passage 28, the other end of the two branch flow passages 30 connects the two main flow passages 16 and the connecting section 26 in a one-to-one manner.

When in use, a polyvinyl chloride foam material with a specific gravity of 1.550~1.750 and high foaming characteristics is injected into the inlet 12, and then flows from the inlet 12 to the two main runners 16, and then flows through the two main runners 16. During the process, on the one hand, the changes in the cross-sectional height of the two main runners 16 are used, and on the other hand, the changes in the cross-sectional width and angle of the two main runners 16 are used to gradually squeeze the polyvinyl chloride foam material, and finally The shape of the product will be formed when the two discharge ports 14 are discharged. As for the size of the product is 63.5mm±0.2mm (width)×2.8mm±0.1mm (thickness), the weight is 28g±1g per inch, and the surface hardness is It has a Shore hardness (Shore) of 85A or more. In addition, when the PVC foaming material flows through the two main channels 16, a skin material (such as PVC, ABS, ASA, etc.) with a specific gravity of 1.450 to 1.650 and high strength and low foaming characteristics (such as PVC, ABS, ASA, etc.) is injected into the secondary channel 28 Inside, the skin material flows from the secondary runner 28 through the two branch runners 30 to the two main runners 16 and the connecting section 26 respectively, and the skin material is mixed with the PVC foam material passing here to form the skin of the product Floor.

In summary, the molding die 10 of the present invention uses a one-in-two-out design, and is then matched with the symmetrical configuration of two main runners 16 and a special angle design, so that the PVC foam material can be quickly and stably passed through and formed The shape of the product, and makes the manufactured product have the characteristics of light weight, good hardness, strong rigidity and stable quality.

10: Forming mold

12: Inlet

14: Outlet

16: Mainstream

A: Central axis

18: Entry section

20: Exit section

22: Front connection section

24: Middle connecting section

26: Rear connection section

28: secondary runner

30: branch runner

32: The first module

34: The second module

36: The third module

38: fourth module

40: fifth module

42: sixth module

L1: The length of the first module

L2: The length of the second module

L3: The length of the third module

L4: Length of the fourth module

L5: The length of the fifth module

L6: The length of the sixth module

Claims (17)

A molding die for polyvinyl chloride foamed wood-like blades includes an inlet, two outlets, and two main channels. The main channels are symmetrically arranged with respect to a central axis and respectively have an inlet section and an inlet section. Outlet section, one end of the inlet section of the main runners is connected to the inlet, and there is a first included angle between the length extension direction of the inlet section of the main runners and the central axis. The first included angles The total range of angles is between 44.2-48.8 degrees. One end of the outlet section of the main runners is connected to a discharge port, and the cross-sectional width of the main runners is from the inlet to the direction of the discharge ports. It increases step by step, and the cross-sectional height of the main runners decreases step by step from the inlet to the outlet. The molding die for PVC foamed wood-like blades as described in claim 1, wherein the cross-sectional width of the entrance section of each main flow channel is consistent from beginning to end. The molding die for PVC foamed wood-like blades as described in claim 1, wherein the cross-sectional height of the entrance section of each main flow channel is consistent from beginning to end. The molding die for polyvinyl chloride foamed wood-like blades according to claim 1, wherein the cross-sectional width of the outlet section of each main flow channel is consistent from beginning to end, and the length extension direction of each outlet section is parallel to The central axis. The molding die for PVC foamed wood-like blades as described in claim 1, wherein the cross-sectional height of the outlet section of each main flow channel is consistent from beginning to end. The molding die for polyvinyl chloride foamed wood-like blades according to claim 1, wherein each main runner has a front connecting section, a middle connecting section and a rear connecting section, and one end of the front connecting section The inlet section is connected, the middle connecting section is connected between the front connecting section and the rear connecting section, and one end of the rear connecting section is connected with the outlet section. The molding die for a polyvinyl chloride foamed wood-like blade according to claim 6, wherein the cross-sectional width of each front connecting section gradually increases from the entrance section toward the middle connecting section. The molding die for PVC foamed wood-like blades according to claim 7, wherein the length extension direction of the front connecting sections and the central axis respectively have a second included angle, and the second included angles The total range of angles is between 36.9-61.9 degrees. The molding die for polyvinyl chloride foamed wood-like blades according to claim 6, wherein the cross-sectional height of the front connecting sections gradually decreases from the entrance section toward the middle connecting sections. The molding die for PVC foamed wood-like blades according to claim 6, wherein the cross-sectional width of each middle connecting section gradually increases from the front connecting section toward the rear connecting section. The molding die for PVC foamed wood-like blades according to claim 10, wherein the length extension direction of the inner side walls of the middle connecting sections and the central axis respectively have a third included angle, the The total angle of the third included angle ranges from 5.7 to 8.6 degrees. There is a fourth included angle between the length extension direction of the outer side walls of the middle connecting sections and the central axis respectively, and the total angle of the fourth included angles is in the range Between 28.1-41.1 degrees. The molding die for polyvinyl chloride foamed wood-like blades according to claim 6, wherein the cross-sectional height of the middle connecting sections gradually decreases from the front connecting sections to the rear connecting sections. The molding die for PVC foamed wood-like blades according to claim 6, wherein the cross-sectional width of each rear connecting section gradually increases from the middle connecting section toward the outlet section. The molding die for polyvinyl chloride foamed wood-like blades according to claim 6, wherein the cross-sectional height of the rear connecting sections gradually decreases from the middle connecting sections toward the exit sections. The molding die for PVC foamed wood-like blades as described in claim 6, which further has a secondary runner and two branch runners. The secondary runner is located between the connecting sections after the primary runners and extends from the The top surface of the forming mold extends downward, one end of the branch runners is respectively connected with a connecting section after the main runner, and the other end of the branch runners is connected with the bottom end of the secondary runner together. The molding die for polyvinyl chloride foamed wood-like blades according to claim 15, wherein the inlet is located in a first module of the molding die, and the inlet sections are located in the first module of the molding die With a second module connected to the first module, the front connecting sections are located at one of the forming molds to connect to the third module of the second module, and the middle connecting sections are located at one of the forming molds to connect to the third module of the third module. The fourth module, the rear connecting sections, the secondary runners, and the branch runners are located in one of the forming molds to connect to the fifth module of the fourth module, and the outlet sections are located in one of the forming molds to connect to the fifth module The sixth module of the module. The molding die for polyvinyl chloride foamed wood-like blades according to claim 6, wherein the inlet is located in a first module of the molding die, and the inlet sections are located in the first module of the molding die With a second module connected to the first module, the front connecting sections are located at one of the forming molds to connect to the third module of the second module, and the middle connecting sections are located at the One of the forming molds is connected to the fourth module of the third module, one of the rear connecting sections is located in the forming mold, and the fifth module of the fourth module is connected, and the outlet sections are located in one of the forming molds and connected to the fifth module The sixth module.

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