High load light weight water float blow molding mold

Abstract

The utility model provides a kind of high bearing light weight water float blow molding die, belong to mould technical field.It includes upper die, middle die and bottom die, the upper die and bottom die are respectively inwardly recessed and provided with upper forming groove and lower forming groove, the middle die is presented and is set between upper die and middle die, the upper forming groove, middle die and lower forming groove combination form forming cavity.By setting inner sealing edge on upper die and middle die and abutting, and setting porous exhaust structure outside inner sealing edge, it can guarantee stable exhaust of forming cavity at the same time, utilize the abutting cooperation of inner sealing edge, effectively reduce the size of flash, realize the double effect of stable exhaust and reduce flash.

Description

Technical Field

[0001] This utility model belongs to the field of blow molding technology, and relates to a blow molding mold for high load-bearing and lightweight floating pontoons. Background Technology

[0002] Floating pontoons are typically formed using a blow molding process, in which the mold's venting performance directly affects product quality and production efficiency. In existing technologies, blow molding dies are often designed with large vents to ensure smooth gas escape during molding and prevent defects such as bubbles and dents. However, this design causes molten material to easily overflow from the large vents during high-pressure molding, forming noticeable and large flash at the vent location. This flash not only requires additional trimming, increasing production time and costs, but incomplete trimming can also affect the pontoon's surface flatness and assembly accuracy. Therefore, the industry urgently needs a blow molding die that can achieve stable venting, ensure molding quality, effectively reduce flash size, and simplify the production process.

[0003] For example, a Chinese patent discloses a double-blade mechanism for blow molding of a floating pontoon [application number: 202221612994.9], which includes a pontoon forming bottom mold, a bottom forming cavity inside the pontoon forming bottom mold, and a middle forming mold and a blow molding main board above the pontoon forming bottom mold. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a high-load-bearing, lightweight blow molding die for floating pontoons.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A blow molding mold for high load-bearing and lightweight floating pontoons includes an upper mold, a middle mold, and a bottom mold. The upper mold and the bottom mold are respectively provided with an upper forming groove and a lower forming groove. The middle mold is rectangular and located between the upper mold and the middle mold. The upper forming groove, the middle mold, and the lower forming groove are combined to form a forming cavity. A blow molding port connected to the forming cavity is provided between the upper mold and the middle mold. The upper mold and the middle mold are provided with protruding inner sealing strips that are arranged along the outer edge of the forming cavity and abut against each other. The outer side of the inner sealing strips is provided with a porous venting structure.

[0006] In the above-mentioned high load-bearing lightweight floating pontoon blow molding mold, the porous venting structure includes several sinking venting grooves set in the upper mold and the middle mold. The inner end of the sinking venting groove extends to the inclined surface outside the inner sealing strip. The corresponding sinking venting grooves on the upper mold and the middle mold are combined to form venting holes. Several ultra-flat venting ports corresponding to the venting holes are formed between the inner sealing strips on the upper mold and the middle mold.

[0007] In the above-mentioned high load-bearing lightweight floating pontoon blow molding mold, an outer sealing strip is also provided on the outside of the inner sealing strip, the outer side of the sinking vent groove is connected to the outer sealing strip, and there is a gap between the outer sealing strips on the upper mold and the middle mold.

[0008] In the aforementioned high load-bearing lightweight floating pontoon blow molding mold, the side wall of the molding cavity is also provided with a side reinforcing rib molding structure.

[0009] In the aforementioned high load-bearing lightweight floating pontoon blow molding mold, the side reinforcing rib forming structure includes several inwardly recessed side reinforcing rib forming grooves disposed on the side wall of the forming cavity, and the side reinforcing rib forming grooves are arranged vertically.

[0010] In the aforementioned high load-bearing lightweight floating pontoon blow molding mold, four fixing parts forming structures are provided between the upper mold and the middle mold, and the four fixing parts forming structures are respectively set at the four corners of the forming cavity.

[0011] In the above-mentioned high load-bearing lightweight floating pontoon blow molding mold, the fixing part molding structure includes fixing part molding grooves recessed inward on the upper mold and the middle mold, and the fixing part molding grooves on the upper mold and the middle mold are correspondingly arranged and combined to form a fixing part molding chamber.

[0012] In the aforementioned high load-bearing lightweight floating pontoon blow molding mold, four inner sealing strips and four outer sealing strips are provided, and they are respectively arranged between the two fixing part forming grooves. The two ends of the inner sealing strips and the outer sealing strips are respectively connected to the outer edge of the fixing part forming groove.

[0013] In the aforementioned high load-bearing lightweight waterborne pontoon blow molding mold, a through-hole molding block is also provided in the middle of the forming groove of the fixing part.

[0014] In the aforementioned high load-bearing lightweight floating pontoon blow molding mold, the bottom of the lower molding groove is also provided with several blade-shaped anti-slip molding grooves.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. By setting inner sealing strips to abut against each other on the upper and middle molds, and setting a porous venting structure on the outside of the inner sealing strips, the flash size can be effectively reduced by utilizing the abutting fit of the inner sealing strips while ensuring stable venting of the molding cavity. This achieves the dual effect of stable venting and flash reduction.

[0016] 2. The multi-hole exhaust structure uses a combination of sunken exhaust grooves to form exhaust holes, and forms an ultra-flat exhaust port between the inner sealing strips. The combination of ultra-flat design and multi-hole design of the exhaust port not only ensures smooth gas discharge, but also greatly limits the amount of material overflow, solving the problem of excessive flash caused by traditional large-size exhaust ports, and further optimizing exhaust stability and flash control effect.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a partial structural diagram of the product before it is demolded; Figure 3 This is a structural diagram of the middle mold and the bottom mold; Figure 4 This is a schematic diagram of the upper mold structure. Detailed Implementation

[0019] like Figures 1-4 As shown, a blow molding mold for a high load-bearing, lightweight floating pontoon includes an upper mold 1, a middle mold 2, and a bottom mold 3. The upper mold 1 and the bottom mold 3 are respectively provided with an upper forming groove 4 and a lower forming groove 5 recessed inward. The middle mold 2 is rectangular and annular and is located between the upper mold 1 and the middle mold 2. The upper forming groove 4, the middle mold 2, and the lower forming groove 5 are combined to form a forming cavity 6. A blow molding port 7 connected to the forming cavity 6 is provided between the upper mold 1 and the middle mold 2. An inner sealing strip 8 is provided on the upper mold 1 and the middle mold 2, and is arranged along the outer edge of the forming cavity 6, with the inner sealing strip 8 on the upper mold 1 and the middle mold 2 abutting each other. A porous venting structure 9 is provided on the outer side of the inner sealing strip 8.

[0020] In this invention, by setting inner sealing strips to abut against each other on the upper mold and the middle mold, and setting a porous venting structure on the outside of the inner sealing strips, the flash size can be effectively reduced by utilizing the abutting fit of the inner sealing strips while ensuring stable venting of the molding cavity. This achieves the dual effect of stable venting and flash reduction.

[0021] Specifically, the porous venting structure 9 includes several recessed venting grooves 10 embedded in the upper mold 1 and the middle mold 2. The inner ends of the recessed venting grooves 10 extend to the inclined surface on the outer side of the inner sealing strip 8. The corresponding recessed venting grooves 10 on the upper mold 1 and the middle mold 2 combine to form venting holes. Several ultra-flat venting openings corresponding to the venting holes are formed between the inner sealing strips 8 on the upper mold 1 and the middle mold 2. The porous venting structure uses recessed venting grooves to form venting holes and ultra-flat venting openings between the inner sealing strips. The combination of ultra-flat and porous designs of the venting openings ensures smooth gas discharge and significantly limits material overflow, solving the problem of excessive flash caused by traditional large-size venting openings, and further optimizing venting stability and flash control.

[0022] Specifically, an outer sealing strip 11 is provided on the outside of the inner sealing strip 8. The outer side of the sunken venting groove 10 is connected to the outer sealing strip 11, and there is a gap between the outer sealing strips 11 on the upper mold 1 and the middle mold 2. The addition of an outer sealing strip on the outside of the inner sealing strip, the connection between the outer side of the sunken venting groove and the outer sealing strip, and the maintenance of a gap between the outer sealing strips form a double-sealed venting path. The outer sealing strip can block material overflow a second time, further reducing flash. At the same time, the gap design ensures unobstructed venting channels, enhancing the synergistic effect of venting and edge control.

[0023] Specifically, the sidewall of the molding cavity 6 is also provided with a side reinforcing rib molding structure. Specifically, the side reinforcing rib molding structure includes several inwardly recessed side reinforcing rib molding grooves 12 arranged vertically on the sidewall of the molding cavity 6. The side reinforcing rib molding structure on the sidewall of the molding cavity forms reinforcing ribs on the sidewall of the molded floating pontoon, improving the structural strength and load-bearing capacity of the pontoon. While achieving a lightweight design, it solves the problem of insufficient load-bearing capacity of traditional pontoons. The vertically arranged side reinforcing rib molding grooves ensure that the molded reinforcing ribs are distributed vertically, which is more in line with the stress characteristics of the pontoon, further improving the longitudinal load-bearing strength and overall structural stability of the pontoon, and enhancing the pontoon's resistance to deformation in water.

[0024] Specifically, four fixing forming structures 13 are provided between the upper mold 1 and the middle mold 2, and the four fixing forming structures 13 are respectively located at the four corners of the forming cavity 6. This design forms fixing parts at the four corners of the pontoon, which enhances the structural strength of the pontoon connection parts, facilitates the assembly and fixing between pontoons, and improves the stability when the pontoons are used in combination.

[0025] Specifically, the fixing part forming structure 13 includes fixing part forming grooves 14 recessed inwardly on the upper mold 1 and the middle mold 2. The fixing part forming grooves 14 on the upper mold 1 and the middle mold 2 are correspondingly arranged and combined to form a fixing part forming chamber. The fixing part forming structure uses the fixing part forming grooves correspondingly arranged on the upper and lower molds to form a fixing part forming chamber, ensuring that the fixing part is formed completely and with accurate dimensions. This makes the fit between the float fixing part and other components tighter, improves the connection reliability, and avoids the connection loosening problem caused by the irregular forming of the traditional fixing part.

[0026] Specifically, four inner sealing strips 8 and four outer sealing strips 11 are provided, respectively, and are positioned between the two fixing part forming grooves 14. The two ends of the inner sealing strips 8 and the outer sealing strips 11 are connected to the outer edges of the fixing part forming grooves 14. This design makes the sealing strips and the fixing part form an integral structure, enhancing the sealing strength and structural stability of the mold edge, and ensuring that the venting and edge control effects are uniform and consistent throughout the entire area. Specifically, a through-hole forming block 15 protrudes from the center of the fixing part forming groove 14. The through-hole forming block in the center of the fixing part forming groove forms a through hole in the pontoon fixing part, which facilitates the use of bolts and other connecting parts for fixing, improves the convenience of pontoon assembly and the connection firmness, and at the same time ensures the forming accuracy of the through hole, avoiding additional costs caused by subsequent processing.

[0027] Specifically, the bottom of the lower forming groove 5 is also provided with several blade-shaped anti-slip forming grooves 16. The presence of several blade-shaped anti-slip forming grooves at the bottom of the lower forming groove creates blade-shaped anti-slip parts at the bottom of the pontoon, increasing the friction between the pontoon and the contact surface, improving the anti-slip performance when the pontoon is placed, solving the problem of easy slippage of traditional pontoons, and enhancing the stability of use.

[0028] The working principle of this utility model is as follows: by setting inner sealing strips to abut against each other on the upper mold and the middle mold, and setting a porous venting structure on the outside of the inner sealing strips, it can ensure stable venting of the molding cavity, and at the same time, effectively reduce the flash size by utilizing the abutting cooperation of the inner sealing strips, thus achieving the dual effect of stable venting and flash reduction. The porous venting structure uses a combination of sunken venting grooves to form venting holes, and forms an ultra-flat venting port between the inner sealing strips. The combination of ultra-flat and porous venting port design ensures smooth gas discharge and significantly limits material overflow, solving the problem of excessive flash caused by traditional large-size venting ports. It further optimizes venting stability and flash control effect. An outer sealing strip is added to the outside of the inner sealing strip, and the outside of the sunken venting groove is connected to the outer sealing strip, with gaps maintained between the outer sealing strips. This design forms a double-sealed venting path. The outer sealing strip can block material overflow a second time, further reducing flash. At the same time, the gap design ensures unobstructed venting channels and enhances the synergistic effect of venting and edge control. The sidewall of the molding cavity is equipped with a side reinforcing rib molding structure, which strengthens the sidewall of the molded float, improving its structural strength and load-bearing capacity. While achieving a lightweight design, it solves the problem of insufficient load-bearing capacity of traditional floats. The vertically arranged side reinforcing rib molding grooves distribute the reinforcing ribs vertically, which is more in line with the stress characteristics of the float, further improving the longitudinal load-bearing strength and overall structural stability of the float, and enhancing the float's resistance to deformation in water. The fixing part molding structure uses a combination of fixing part molding grooves set in the upper and lower molds to form a fixing part molding chamber, ensuring that the fixing part is molded completely and dimensionally accurate. This makes the fit between the float fixing part and other components tighter, improving connection reliability and avoiding the loosening problem caused by irregular molding of traditional fixing parts. Several blade-shaped anti-slip molding grooves are set at the bottom of the lower molding groove, forming blade-shaped anti-slip parts at the bottom of the float, increasing the friction between the float and the contact surface, improving the anti-slip performance when the float is placed, solving the problem of easy sliding of traditional floats, and enhancing the stability of use.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model 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 utility model or exceeding the scope defined by the appended claims.

Claims

1. A blow molding mold for high load-bearing and lightweight floating pontoons, comprising an upper mold (1), a middle mold (2), and a bottom mold (3), characterized in that, The upper mold (1) and the bottom mold (3) are respectively provided with an upper forming groove (4) and a lower forming groove (5) recessed inward. The middle mold (2) is rectangular and is located between the upper mold (1) and the middle mold (2). The upper forming groove (4), the middle mold (2) and the lower forming groove (5) are combined to form a forming cavity (6). A blow molding port (7) connected to the forming cavity (6) is provided between the upper mold (1) and the middle mold (2). An inner sealing strip (8) is provided on the upper mold (1) and the middle mold (2) along the outer edge of the forming cavity (6), and the inner sealing strip (8) on the upper mold (1) and the middle mold (2) abuts against each other. A porous venting structure (9) is provided on the outer side of the inner sealing strip (8).

2. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 1, characterized in that, The porous venting structure (9) includes several recessed venting grooves (10) set on the upper mold (1) and the middle mold (2). The inner end of the recessed venting groove (10) extends to the inclined surface on the outer side of the inner sealing strip (8). The corresponding recessed venting grooves (10) on the upper mold (1) and the middle mold (2) are combined to form venting holes. Several ultra-flat venting ports corresponding to the venting holes are formed between the inner sealing strips (8) on the upper mold (1) and the middle mold (2).

3. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 2, characterized in that, The inner sealing strip (8) is also provided with an outer sealing strip (11) on the outside. The outer side of the sunken vent groove (10) is connected to the outer sealing strip (11). There is a gap between the outer sealing strip (11) on the upper mold (1) and the middle mold (2).

4. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 3, characterized in that, The side wall of the molding cavity (6) is also provided with a side reinforcing rib molding structure.

5. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 4, characterized in that, The side reinforcing rib forming structure includes several side reinforcing rib forming grooves (12) recessed inward on the side wall of the forming cavity (6), and the side reinforcing rib forming grooves (12) are vertically arranged.

6. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 3, characterized in that, Four fixing parts forming structures (13) are provided between the upper mold (1) and the middle mold (2), and the four fixing parts forming structures (13) are respectively set at the four corners of the forming cavity (6).

7. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 6, characterized in that, The fixing part forming structure (13) includes a fixing part forming groove (14) recessed inward on the upper mold (1) and the middle mold (2). The fixing part forming grooves (14) on the upper mold (1) and the middle mold (2) are correspondingly arranged and combined to form a fixing part forming chamber.

8. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 7, characterized in that, The inner sealing strip (8) and the outer sealing strip (11) are each provided in four strips, and are respectively provided between the two fixing part forming grooves (14). The two ends of the inner sealing strip (8) and the outer sealing strip (11) are respectively connected to the outer edge of the fixing part forming groove (14).

9. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 8, characterized in that, The fixing part forming groove (14) is also provided with a through hole forming block (15) protruding in the middle.

10. The high load-bearing, lightweight waterborne pontoon blow molding mold according to claim 1, characterized in that, The bottom of the lower forming groove (5) is also provided with several blade-shaped anti-slip forming grooves (16).

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