Straight-edge double-body buoy blow molding mold

Abstract

The utility model provides a straight-edge double-body buoy blow molding die which comprises a lower mounting seat and an upper mounting seat, a lower die seat is fixedly mounted at the top end of the lower mounting seat, an upper die seat matched with the lower die seat is fixedly mounted at the bottom end of the upper mounting seat, two die cavities which are arranged in an axial symmetry mode are formed in each of the lower die seat and the upper die seat, and the lower die seat and the upper die seat are fixedly mounted on the lower mounting seat. Telescopic arc-shaped protruding blocks are arranged at the four corners and the two sides of the mold cavity correspondingly, blow molding openings are fixedly formed in one side of the lower mold base and one side of the upper mold base correspondingly, and feeding openings are fixedly formed in the other side of the lower mold base and the other side of the upper mold base correspondingly. The telescopic arc-shaped convex blocks are arranged at the four corners and the two sides of the mold cavity, so that the arc-shaped grooves are formed in the four corners of the two straight-edge double-body buoys formed through injection molding, meanwhile, in the demolding process, the arc-shaped convex blocks can be shrunk, and the situation that the demolding efficiency of the straight-edge double-body buoys is affected by the arc-shaped convex blocks is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of pontoon technology and relates to blow molding molds for straight-edged double-bodied pontoons. Background Technology

[0002] Straight-edged catamaran pontoons are a type of plastic component used for building floating bridges on water. By creating a hollow structure inside the pontoon, the buoyancy of the floating bridge is ensured. Straight-edged catamaran pontoons are mainly manufactured using blow molding.

[0003] Currently, straight-edged twin-hull pontoons are mainly formed by blow molding using injection molds and blow molding machines. However, during the processing of straight-edged twin-hull pontoons, we found that because the four corners of the pontoons are typically equipped with arc-shaped grooves to facilitate connection between them, the formed pontoons are difficult to demold, affecting processing efficiency. Therefore, we designed a blow molding mold for straight-edged twin-hull pontoons to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a blow molding mold for a straight-edged twin-bodied float to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: a straight-edge double-body float blow molding mold, including a lower mounting base and an upper mounting base. A lower mold base is fixedly installed at the top of the lower mounting base, and an upper mold base adapted to the lower mold base is fixedly installed at the bottom of the upper mounting base. Both the lower mold base and the upper mold base have two axially symmetrically arranged mold cavities inside. Retractable arc-shaped protrusions are provided at the four corners and both sides of the mold cavity. A blow molding port is fixedly provided on one side of both the lower mold base and the upper mold base, and a feed port is fixedly provided on the other side of both the lower mold base and the upper mold base.

[0006] In the above-mentioned straight-edge twin-body pontoon blow molding mold, multiple strip-shaped protrusions are fixedly arranged at equal intervals on the inner walls of the feed port and blow molding port of the lower mold base and the upper mold base, and a strip-shaped groove adapted to the strip-shaped protrusion is opened between two adjacent strip-shaped protrusions.

[0007] In the above-mentioned straight-edge twin-hull blow molding mold, the strip-shaped protrusion located on the upper mold base is inserted into the strip-shaped groove located on the lower mold base, and the strip-shaped protrusion located on the lower mold base is inserted into the strip-shaped groove located on the upper mold base.

[0008] In the above-mentioned straight-edge double-body float blow molding mold, grooves are provided at the four corners of the mold cavity and the middle of both sides of the inner wall. The arc-shaped protrusion is inserted into the corresponding groove. A first return spring is fixedly installed inside the groove. One end of the first return spring is fixedly connected to the end face of the arc-shaped protrusion. Vent holes communicating with the outside are provided on both sides of the bottom of the mold cavity.

[0009] In the above-mentioned straight-edge twin-bodied pontoon blow molding mold, rectangular grooves are provided at the four corners and the center of the front of the lower mold base and the upper mold base. An inclined column is inserted into the inside of each rectangular groove, and one end of the inclined column is inserted into the inside of the groove. An inclined groove is provided at the position where the arc-shaped protrusion is aligned with the inclined column, and the inclined surface of the inclined column is in contact with the inclined surface of the inclined groove.

[0010] In the above-mentioned straight-edge twin-hull blow molding mold, a pressure block adapted to the inner diameter of the rectangular groove is nested inside the rectangular groove, and the bottom end of the pressure block is fixedly connected to the other end of the inclined column.

[0011] In the above-mentioned straight-edge twin-bodied pontoon blow molding mold, a second return spring is nested on the surface of the inclined column. One end of the second return spring is fixedly connected to the bottom of the rectangular groove, and the other end of the second return spring is fixedly connected to the bottom end of the pressure block.

[0012] Compared with the prior art, the advantages of this utility model of straight-edge double-body float blow molding mold are:

[0013] 1. By setting retractable arc-shaped protrusions at the four corners and sides of the mold cavity, arc-shaped grooves are set at the four corners of the two injection-molded straight-edged twin-body floats. At the same time, the arc-shaped protrusions can shrink during the demolding process, thus avoiding the arc-shaped protrusions affecting the demolding efficiency of the straight-edged twin-body floats.

[0014] 2. By fixing multiple strip-shaped protrusions at equal intervals on the inner walls of the feed inlet and blow molding outlet of the lower mold base and the upper mold base, and by staggering the strip-shaped protrusions, when the lower mold base and the upper mold base separate, the formed straight-edge double-body float and the waste form an intermittent wire hole structure, which effectively facilitates the separation between the straight-edge double-body float and the waste, replacing the traditional manual separation by cutting, and improving the processing efficiency of the straight-edge double-body float. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the straight-edge double-body float blow molding mold of this utility model.

[0016] Figure 2 This is a schematic diagram of the unfolded structure of the straight-edge double-body float blow molding mold of this utility model.

[0017] Figure 3This is a cross-sectional structural diagram of the straight-edge double-body float blow molding mold of this utility model.

[0018] Figure 4 This utility model relates to a blow molding mold for a straight-edged double-bodied float. Figure 3 Enlarged view of a portion of point A in the middle.

[0019] Figure 5 This is a schematic diagram of the connection structure between the strip-shaped protrusion and the strip-shaped groove of the straight-edge double-body float blow molding mold of this utility model.

[0020] In the diagram, 1. Lower mounting base; 2. Upper mounting base; 3. Lower mold base; 4. Upper mold base; 5. Blow nozzle; 6. Mold cavity; 7. Strip groove; 8. Strip protrusion; 9. Vent hole; 10. Angled post; 11. Rectangular groove; 12. Pressure block; 13. Groove; 14. First return spring; 15. Arc-shaped protrusion; 16. Angled groove; 17. Second return spring. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1-5 As shown, the present invention relates to a straight-edge double-body float blow molding mold, comprising a lower mounting base 1 and an upper mounting base 2. A lower mold base 3 is fixedly mounted on the top of the lower mounting base 1, and an upper mold base 4 adapted to the lower mold base 3 is fixedly mounted on the bottom of the upper mounting base 2. Both the lower mold base 3 and the upper mold base 4 have two axially symmetrically arranged mold cavities 6 inside. Retractable arc-shaped protrusions 15 are provided at the four corners and both sides of the mold cavity 6. A blow molding port 5 is fixedly provided on one side of both the lower mold base 3 and the upper mold base 4, and a feed port is fixedly provided on the other side of both the lower mold base 3 and the upper mold base 4.

[0023] Specifically, by providing retractable arc-shaped protrusions 15 at the four corners and sides of the mold cavity 6, arc-shaped grooves are provided at the four corners of the two injection-molded straight-edged twin-body floats. At the same time, during the demolding process, the arc-shaped protrusions 15 can shrink, thus avoiding the arc-shaped protrusions 15 affecting the demolding efficiency of the straight-edged twin-body floats.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in the straight-edge double-body float blow molding mold of this utility model, multiple strip-shaped protrusions 8 are fixedly arranged at equal intervals on the inner walls of the feed port and blow molding port 5 of the lower mold base 3 and the upper mold base 4, and a strip-shaped groove 7 adapted to the strip-shaped protrusions 8 is opened between two adjacent strip-shaped protrusions 8.

[0025] The strip-shaped protrusion 8 located in the upper mold base 4 is inserted into the strip-shaped groove 7 located in the lower mold base 3, and the strip-shaped protrusion 8 located in the lower mold base 3 is inserted into the strip-shaped groove 7 located in the upper mold base 4.

[0026] Specifically, through the cooperation of the strip-shaped protrusion 8 and the strip-shaped groove 7, when the lower mold base 3 and the upper mold base 4 are separated, the formed straight-edge double-body float and the waste support form a groove, which facilitates the separation of the formed straight-edge double-body float and the waste.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention relates to a straight-edge double-body float blow molding mold. Grooves 13 are provided at the four corners of the mold cavity 6 and at the middle of both sides of the inner wall. Arc-shaped protrusions 15 are inserted into the corresponding grooves 13. A first return spring 14 is fixedly installed inside the groove 13. One end of the first return spring 14 is fixedly connected to the end face of the arc-shaped protrusion 15. Vent holes 9 communicating with the outside are provided on both sides of the bottom of the mold cavity 6.

[0028] Rectangular slots 11 are provided at the four corners and the center of the front of the lower mold base 3 and the upper mold base 4. An inclined column 10 is inserted into the inside of each rectangular slot 11, and one end of the inclined column 10 is inserted into the inside of the groove 13. An inclined slot 16 is provided at the position where the arc-shaped protrusion 15 is aligned with the inclined column 10. The inclined surface of the inclined column 10 fits into the inclined surface of the inclined slot 16. A pressure block 12 that matches the inner diameter of the rectangular slot 11 is nested inside the rectangular slot 11. The bottom end of the pressure block 12 is fixedly connected to the other end of the inclined column 10. A second return spring 17 is nested on the surface of the inclined column 10. One end of the second return spring 17 is fixedly connected to the bottom of the rectangular slot 11, and the other end of the second return spring 17 is fixedly connected to the bottom end of the pressure block 12.

[0029] Specifically, the second return spring 17 pushes the pressure block 12 to reset, and the reset of the pressure block 12 pulls the inclined column 10 to separate from the inclined groove 16. When the inclined column 10 separates from the inclined groove 16, the first return spring 14 pulls the arc-shaped protrusion 15 to move, so that the arc-shaped protrusion 15 moves into the interior of the groove 13, which facilitates the separation of the arc-shaped protrusion 15 from the formed straight-edge double-body float, and facilitates the demolding of the straight-edge double-body float.

[0030] In specific implementation, when using the straight-edged double-bodied pontoon blow molding mold to produce and process the straight-edged double-bodied pontoon, the straight-edged double-bodied pontoon blow molding mold is first fixedly installed in the blow molding machine. Then, the upper mold base 4 and the lower mold base 3 are pushed to close the mold by the electric hydraulic cylinder of the blow molding machine. During the process of the upper mold base 4 and the lower mold base 3 closing the mold, the extrusion block 12 moves into the interior of the rectangular groove 11. The extrusion block 12 pushes the inclined column 10 to move. The inclined column 10 and the inclined groove 16 cooperate to push the arc-shaped protrusion 15 to extend. When the material of the blow molding machine enters the interior of the blow molding mold from the feed port, it is blow molded through the two blow molding ports 5.

[0031] After the blow molding process is completed and the shape is set, the upper mold base 4 and the lower mold base 3 are separated by the electric hydraulic cylinder of the blow molding machine. When the upper mold base 4 and the lower mold base 3 are separated, the pressure block 12 is pushed to reset by the second reset spring 17. At this time, the inclined column 10 and the inclined groove 16 are separated, and the arc-shaped protrusion 15 is reset and retracted by the tension of the first reset spring 14, which facilitates separation from the formed straight-edge double-body float. At the same time, when the upper mold base 4 and the lower mold base 3 are separated, the strip protrusion 8 and the strip groove 7 are separated, so that a wire hole is formed between the formed straight-edge double-body float and the waste material, which facilitates the quick separation of the waste material from the straight-edge double-body float, replacing the traditional manual separation by cutting, and improving the processing efficiency of the straight-edge double-body float.

[0032] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A blow molding mold for a straight-edged twin-hull float, comprising a lower mounting base (1) and an upper mounting base (2), wherein a lower mold base (3) is fixedly mounted on the top end of the lower mounting base (1), and an upper mold base (4) adapted to the lower mold base (3) is fixedly mounted on the bottom end of the upper mounting base (2), characterized in that, The lower mold base (3) and the upper mold base (4) are each provided with two axially symmetrically arranged mold cavities (6). The four corners and both sides of the mold cavity (6) are provided with retractable arc-shaped protrusions (15). The lower mold base (3) and the upper mold base (4) are each provided with a blow molding port (5) on one side, and the lower mold base (3) and the upper mold base (4) are each provided with a feed port on the other side.

2. The straight-edge double-body float blow molding die according to claim 1, characterized in that, Multiple strip-shaped protrusions (8) are fixedly provided at equal intervals on the inner walls of the feed inlet and blow molding inlet (5) of the lower mold base (3) and the upper mold base (4), and a strip groove (7) adapted to the strip-shaped protrusions (8) is opened between two adjacent strip-shaped protrusions (8).

3. The straight-edge double-body float blow molding mold according to claim 2, characterized in that, The strip-shaped protrusion (8) located on the upper mold base (4) is inserted into the strip-shaped groove (7) located on the lower mold base (3), and the strip-shaped protrusion (8) located on the lower mold base (3) is inserted into the strip-shaped groove (7) located on the upper mold base (4).

4. The straight-edge double-body float blow molding die according to claim 1, characterized in that, The mold cavity (6) has grooves (13) at its four corners and in the middle of both sides of its inner wall. The arc-shaped protrusion (15) is inserted into the corresponding groove (13). A first reset spring (14) is fixedly installed inside the groove (13). One end of the first reset spring (14) is fixedly connected to the end face of the arc-shaped protrusion (15). The bottom of the mold cavity (6) has exhaust holes (9) on both sides that communicate with the outside.

5. The straight-edge double-body float blow molding die according to claim 4, characterized in that, Rectangular grooves (11) are provided at the four corners and the center of the front of the lower mold base (3) and the upper mold base (4). An inclined column (10) is inserted into the inside of each rectangular groove (11), and one end of the inclined column (10) is inserted into the inside of the groove (13). An inclined groove (16) is provided at the position where the arc-shaped protrusion (15) is aligned with the inclined column (10). The inclined surface of the inclined column (10) is in contact with the inclined surface of the inclined groove (16).

6. The straight-edge double-body float blow molding die according to claim 5, characterized in that, The rectangular groove (11) is internally nested with a pressure block (12) that is adapted to the inner diameter of the rectangular groove (11), and the bottom end of the pressure block (12) is fixedly connected to the other end of the inclined column (10).

7. The straight-edge double-bodied float blow molding die according to claim 6, characterized in that, The surface of the inclined column (10) is nested with a second reset spring (17). One end of the second reset spring (17) is fixedly connected to the bottom of the rectangular groove (11), and the other end of the second reset spring (17) is fixedly connected to the bottom end of the pressure block (12).

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