A deep cavity pressing mold for automobile fender that is easy to demould

Abstract

The utility model aims to provide a deep-cavity pressing mold for automobile fenders, which can prevent the peripheral edge of the fender from being pulled into the cavity of the lower mold during the fender pressing process. An easy-to-demold automobile fender deep-cavity pressing mold comprises an upper mold and a lower mold, a demoulding push plate is provided on the outer side of the lower mold, the demoulding push plate and the top wall of the lower mold are flush, a plurality of puncture nails are installed on the outer wall of the demoulding push plate, these puncture nails protrude upward to the top wall of the demoulding push plate, the top of the puncture nails temporarily support the peripheral edge of the fender, the upper mold presses down the middle of the fender to drive the peripheral edge of the fender to move downward until it is pierced by the puncture nails and is laterally limited, the upper mold continues to press down until the middle of the fender is pressed into the cavity of the lower mold by the middle of the bottom wall of the upper mold for compression molding; the demoulding push plate can move upward, and the demoulding push plate moves upward after the upper mold moves upward and resets, so as to lift the peripheral edge of the fender to demould.

Description

Technical Field

[0001] The utility model relates to the field of automobile fender production, in particular to an easy-to-demold automobile fender deep-cavity pressing mold. Background Art

[0002] Some car fenders are made of engineering plastics, which are formed by pressing a flat fender into shape through a pressing mold. Figure 1 As shown, the existing automobile fender deep cavity pressing mold includes an upper mold 1 and a lower mold 2, the fender edge 3 is placed on the top wall edge of the lower mold 2, and the middle part 10 of the fender is located directly above the mold cavity of the lower mold 2, and is pressed into the mold cavity of the lower mold 2 by the upper mold 1 to be formed; then the fender edge 3 is manually cut off, and the remaining part is the finished fender. The middle part 10 of the fender shrinks during the process of being pressed into the mold cavity of the lower mold 2 by the upper mold 1, resulting in waste (the fender edge 3) being pulled into the mold cavity of the lower mold 2 and pressed together, resulting in the fender being unqualified. Utility Model Content

[0003] The utility model aims to provide a deep cavity pressing die for automobile fenders, which can prevent the peripheral edge 3 of the fender from being pulled into the die cavity of a lower die 2 during the fender pressing process.

[0004] The utility model discloses a deep cavity pressing mold for an automobile fender which is easy to demold, comprising an upper mold and a lower mold, a demolding push plate is arranged on the outer side of the lower mold, the top walls of the demolding push plate and the lower mold are flush, a plurality of puncture nails are arranged on the outer side wall of the demolding push plate, the puncture nails protrude upward to the top wall of the demolding push plate, the top ends of the puncture nails temporarily support the peripheral edge of the fender, the upper mold presses down the middle part of the fender to drive the peripheral edge of the fender to move downward until it is pierced by the puncture nails and is laterally limited, the upper mold continues to press down until the middle part of the fender is pressed into the mold cavity of the lower mold by the middle part of the bottom wall of the upper mold for compression molding; the demolding push plate can be moved upward, and the demolding push plate moves upward after the upper mold is moved upward and reset, so as to lift the peripheral edge of the fender to demold.

[0005] Furthermore, a vertical push cylinder is installed on the outer side wall of the lower mold, and a demoulding push plate is installed on the top of the vertical push cylinder and is driven by the vertical push cylinder to move upward.

[0006] Furthermore, a pressure vertical cylinder is installed on the outer side wall of the upper mold, and a pressure plate is installed at the lower end of the pressure vertical cylinder. The outer side wall of the demoulding push plate equipped with puncture nails is flush with the corresponding side wall of the pressure plate. The pressure plate is driven by the pressure vertical cylinder to press the edge of the mudguard located on the top wall of the demoulding push plate.

[0007] Furthermore, the pressure plate is in a square frame shape, surrounding the bottom of each side wall of the upper mold.

[0008] Furthermore, the demoulding push plate is in a square frame shape, surrounding the top of each side wall of the lower mold.

[0009] Furthermore, a concave deep mold cavity is provided on the top wall of the lower mold, and a convex portion is correspondingly provided on the bottom wall of the upper mold.

[0010] The beneficial effect is that the edge of the fender is pierced by the puncture nail and is laterally limited, so it will not move from the demoulding push plate into the mold cavity of the lower mold. After the upper mold is moved up and reset, the demoulding push plate moves up to lift the edge of the fender to demould. The contact surface between the demoulding push plate and the edge of the fender is large, so it will not apply too much thrust to the part of the edge of the fender, and it is not easy to tear the part of the edge of the fender. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an exploded view of an existing automobile fender deep cavity pressing die;

[0012] Figure 2 It is an exploded view of the deep cavity pressing mold of the automobile fender of the utility model;

[0013] Figure 3 It is a front view of the deep cavity pressing mold for automobile fender of the utility model, the fender has been placed on the lower mold (2), and the peripheral edge (3) of the fender has been pierced by the piercing nail (6);

[0014] Figure 4 This is a front view of the deep cavity pressing mold for automobile fenders of the utility model, in which the upper mold (1) has been pressed down. Figure 3 fenders in;

[0015] Figure 5 This is a front view of the deep cavity pressing mold for automobile fenders of the utility model. Figure 4 The upper mold (1) has been moved upward and reset, and the demoulding push plate (5) has lifted the fender edge (3);

[0016] In the figure: 1. upper mold; 2. lower mold; 3. peripheral edge; 4. pressure plate; 5. demoulding push plate; 6. puncture nail; 7. pressure vertical cylinder; 8. push vertical cylinder; 10. middle part of fender; 11. mold cavity; 12. lower convex part. DETAILED DESCRIPTION

[0017] The invention of the utility model is further described in detail below in conjunction with specific implementation methods.

[0018] like Figure 2 and Figure 3As shown, the deep cavity pressing mold of the automobile fender comprises an upper mold 1 and a lower mold 2. The bottom wall of the upper mold 1 is provided with a lower convex portion 12. The outer side wall of the upper mold 1 is provided with a downward pressure vertical cylinder 7. The bottom of the outer side wall of the upper mold 1 is provided with a square frame-shaped pressure plate 4 to surround the upper mold 1. The pressure plate 4 is installed at the bottom end of the pressure vertical cylinder 7. The pressure plate 4 and the bottom wall of the non-lower convex portion 12 of the upper mold 1 are flush. The outer side wall of the lower mold 2 is provided with an upward push vertical cylinder 8. The top of the outer side wall of the lower mold 2 is provided with a square frame-shaped demoulding push plate 5 to surround the lower mold 2. The demoulding push plate 5 is installed at the top of the push vertical cylinder 8. The demoulding push plate 5 and the top wall of the non-mold cavity 11 of the lower mold 2 are flush. The outer side walls of the demoulding push plate 5 and the pressure plate 4 are flush. A plurality of puncture nails 6 are installed on the outer side wall of the demoulding push plate 5. These puncture nails 6 protrude upward to the top wall of the demoulding push plate 5. The working process of the deep cavity pressing mold of the utility model is described in detail below.

[0019] The fender edge 3 is placed on the top of the puncture nails 6 for support, and the upper mold 1 presses down the fender middle part 10 through its lower protrusion 12, thereby driving the fender edge 3 to move down until it is pierced by the puncture nails 6. Figure 4 As shown, the lower convex portion 12 continues to press down until the middle part 10 of the fender is pressed into the mold cavity 11 of the lower mold 2 for pressing and forming, and the fender edge 3 is not pulled into the mold cavity 11 of the lower mold 2 because it is laterally limited by the puncture nail 6. At the same time, the pressure plate 4 is driven by the pressure vertical cylinder 7 to press the fender edge 3 located on the top wall of the demoulding push plate 5, further preventing the fender edge 3 from being pulled into the mold cavity 11 of the lower mold 2.

[0020] The fender has been pressed into shape and needs to be demoulded. Figure 5 As shown, the upper mold 1 and the pressure plate 4 are moved up and reset, and the demoulding push plate 5 is driven by the vertical push cylinder 8 to move up so as to lift the fender edge 3 to demoulding. The fender is manually removed, and the fender edge 3 is cut off to obtain a finished fender.

[0021] The above is only an implementation method of the utility model, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the utility model, which still fall within the scope of patent protection.

Claims

1. An easy-to-release automobile fender deep-cavity pressing mold, characterized in that: The upper mold comprises an upper mold and a lower mold, a demoulding push plate is arranged on the outer side of the lower mold, the top walls of the demoulding push plate and the lower mold are flush, a plurality of puncture nails are installed on the outer side wall of the demoulding push plate, these puncture nails protrude upward to the top wall of the demoulding push plate, the top ends of the puncture nails temporarily support the peripheral edge of the mudguard, the upper mold presses down the middle part of the mudguard to drive the peripheral edge of the mudguard to move downward until it is pierced by the puncture nails and is laterally limited, the upper mold continues to press down until the middle part of the mudguard is pressed into the mold cavity of the lower mold by the middle part of the bottom wall of the upper mold for pressing and forming; the demoulding push plate can be moved upward, and the demoulding push plate moves upward after the upper mold is moved upward and reset, so as to lift the peripheral edge of the mudguard to demould.

2. The deep cavity pressing mold for automobile fender according to claim 1, characterized in that: A push vertical cylinder is arranged on the outer side wall of the lower mold, and a demoulding push plate is arranged on the top of the push vertical cylinder and is driven by the push vertical cylinder to move upward.

3. The deep cavity pressing mold for automobile fender according to claim 1, characterized in that: A pressure vertical cylinder is installed on the outer side wall of the upper mold, and a pressure plate is installed at the lower end of the pressure vertical cylinder. The outer side wall of the demoulding push plate with puncture nails is flush with the corresponding side wall of the pressure plate. The pressure plate is driven by the pressure vertical cylinder to press the peripheral edge of the mud guard located on the top wall of the demoulding push plate.

4. The deep cavity pressing mold for automobile fender according to claim 3, characterized in that: The pressure plate is in the shape of a square frame, surrounding the bottom of each side wall of the upper mold.

5. The deep cavity pressing mold for automobile fender according to claim 1, characterized in that: The demoulding push plate is in the shape of a square frame, surrounding the top of each side wall of the lower mold.

6. The deep cavity pressing mold for automobile fender according to claim 1, characterized in that: The top wall of the lower mold is provided with a deep concave mold cavity, and the bottom wall of the upper mold is correspondingly provided with a lower convex portion.

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