A heat shield stamping fixture facilitating demolding

Abstract

The utility model belongs to punch clamp technical field, concretely relates to a heat shield punch clamp convenient to demould, including lower die seat, the top fixedly connected with lower mould of lower die seat, the top arc shape of lower mould is arranged, the vertical fixedly connected with a plurality of baffle strips of axial both ends symmetry of lower mould, the both sides symmetry of baffle strip is provided with a pair of slide rails, the horizontal sliding connection with lifting plate between the slide rails, the top fixedly connected with a plurality of stoppers of lifting plate symmetry, the bottom vertical fixedly connected with a plurality of spring ejector pin of lifting plate. The utility model has the advantages that by being provided with baffle strip and stopper, can limit the edge of plate material when stamping, avoid the deflection of plate material when stamping, thereby improve the stamping accuracy of heat shield, still be provided with spring ejector pin, can automatically lift heat shield after stamping, and it is convenient to demould heat shield.

Description

Technical Field

[0001] This utility model relates to the field of stamping fixture technology, specifically a heat insulation cover stamping fixture that facilitates demolding. Background Technology

[0002] Heat shields, as crucial thermal protection components, play an indispensable role in numerous fields. Their core function is to isolate high-temperature heat sources and protect surrounding components from high-temperature damage. From a functional perspective, heat shields achieve thermal protection primarily through physical isolation, heat dissipation structure design, and material insulation. Physical isolation directly blocks high-temperature heat sources from contacting surrounding components; heat dissipation structures, such as cooling channels and air gaps, accelerate heat dissipation; and material insulation utilizes high-temperature resistant materials or coatings to reflect and absorb heat, reducing heat transfer efficiency. In the aerospace field, critical components such as rocket engines and aircraft engines rely heavily on heat shields for protection. In the automotive industry, heat shields are used on engines, exhaust pipes, and other parts to extend component lifespan and improve safety; there are also specialized automotive sunshade heat shields. Shipbuilding also uses them to cover liquid fuel tanks.

[0003] Most heat insulation covers are formed by stamping flat sheet metal. For curved heat insulation covers, curved molds and grooves are required for stamping. However, when flat sheet metal is placed on the curved surface of the mold for stamping, it is easy to become skewed, which affects the forming accuracy of the heat insulation cover. Moreover, after stamping, the heat insulation cover is tightly attached to the stamping fixture, making it difficult to demold. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing heat insulation cover stamping fixture is prone to skewing of the sheet metal during stamping and is not easy to demold.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A heat insulation cover stamping fixture for easy demolding includes a lower die base. A lower mold is fixedly connected to the top of the lower die base. The top of the lower mold is arc-shaped. Several stop bars are symmetrically and vertically fixedly connected to both ends of the lower mold along its axial direction. A pair of slide rails are symmetrically arranged on both sides of the stop bars. A lifting plate is horizontally slidably connected between the slide rails facing each other. Several blocks are symmetrically fixedly connected to the top of the lifting plate. Several spring push rods are vertically fixedly connected to the bottom of the lifting plate. The bottom ends of the spring push rods are slidably connected to the lower die base. The blocks and stop bars have inclined surfaces on the top side of the lower mold facing one side. Several spring pins are slidably connected to the top of the lower mold. The spring pins are perpendicular to the axis of the lower mold.

[0007] Furthermore, a number of guide rods are vertically fixedly connected to the top of the lower mold base, and an outer sleeve is slidably connected to the top of the guide rods. An upper mold base is horizontally fixedly connected between the outer sleeves.

[0008] Furthermore, an upper mold is fixedly connected to the bottom of the upper mold base, and a cavity is opened at the bottom of the upper mold, the size and shape of which match the lower mold.

[0009] Furthermore, a pair of mounting blocks are fixedly connected to the bottom sides of the upper mold base, and a punching head is vertically fixedly connected to the bottom of the mounting blocks.

[0010] Furthermore, a number of spring telescopic rods are vertically fixedly connected to the bottom of the upper mold base. The movable end of the spring telescopic rod is slidably connected to the upper mold and extends to the bottom of the cavity. A number of spring limiting pins are vertically slidably connected inside the upper mold, and the bottom end of the spring limiting pin extends to the bottom of the cavity.

[0011] Furthermore, the spring telescopic rod and the spring limiting pin are located directly above the axis of the lower mold.

[0012] Furthermore, the lower mold and the lower mold base have through holes inside, the through holes are coaxially arranged with the punch head, and a pair of receiving boxes are detachably provided at the bottom of the lower mold base, the receiving boxes being located at the bottom of the through holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The present invention provides a heat insulation cover stamping fixture that facilitates demolding. By setting a stop bar and a stop block, the edge of the sheet metal can be limited during stamping to prevent the sheet metal from deflecting during stamping, thereby improving the stamping accuracy of the heat insulation cover. It is also equipped with a spring top pin, which can automatically lift the heat insulation cover after stamping, making it easy to demold the heat insulation cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a heat insulation cover stamping fixture that facilitates demolding according to this utility model.

[0016] Figure 2 This is a schematic diagram of the lower mold structure of a heat insulation cover stamping fixture for easy demolding according to the present invention.

[0017] Figure 3 This is a cross-sectional view of a heat insulation cover stamping fixture that facilitates demolding according to this utility model.

[0018] Figure 4 This is a schematic diagram of the heat insulation cover structure of a heat insulation cover stamping fixture that facilitates demolding according to this utility model.

[0019] In the diagram: 1. Lower mold base; 2. Upper mold base; 3. Upper mold; 4. Slide rail; 5. Lifting plate; 6. Spring push rod; 7. Guide rod; 8. Lower mold; 9. Stop block; 10. Stop bar; 11. Spring push pin; 12. Material receiving box; 13. Spring telescopic rod; 14. Mounting block; 15. Punch head; 16. Through hole; 17. Spring limit pin; 18. Inclined surface; 19. Outer sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 The heat insulation cover stamping fixture for easy demolding in this embodiment includes a lower die base 1. A lower die 8 is fixedly connected to the top of the lower die base 1. The top of the lower die 8 is arc-shaped. Several baffles 10 are symmetrically and vertically fixedly connected to both ends of the lower die 8. A pair of slide rails 4 are symmetrically arranged on both sides of the baffles 10. A lifting plate 5 is horizontally slidably connected between the opposing slide rails 4. Several blocks 9 are symmetrically fixedly connected to the top of the lifting plate 5. Several spring push rods 6 are vertically fixedly connected to the bottom of the lifting plate 5. The bottom end of the spring push rods 6 is slidably connected to the lower die base 1. An inclined surface 18 is provided on the top of the side of the block 9 and the baffles 10 facing the lower die 8. Several spring pins 11 are slidably connected to the top of the lower die 8. The spring pins 11 are perpendicular to the axis of the lower die 8. Before punching, the lifting plate 5 is positioned at the top of the slide rail 4 under the elastic force of the spring rod 6. At this time, the flat plate is placed between the stop bars 10, so that the two ends of the plate abut against the stop bars 10 respectively. The stop bars 10 can limit the two ends of the plate. At the same time, the two sides of the plate are respectively located between the inclined surfaces 18 on the top of the stop block 9. The stop block 9 and the inclined surfaces 18 can support and limit the two sides of the plate, so that the plate is horizontally positioned directly above the lower mold 8 before punching, avoiding the plate from tilting and affecting the forming accuracy of the heat insulation cover. After forming, the heat insulation cover is attached to the top surface of the lower mold 8. The spring pin 11 can automatically lift the formed heat insulation cover, making it easy to demold.

[0022] Several guide rods 7 are vertically fixedly connected to the top of the lower die base 1. An outer sleeve 19 is slidably connected to the top of the guide rods 7. An upper die base 2 is horizontally fixedly connected between the outer sleeves 19. An upper mold 3 is fixedly connected to the bottom of the upper die base 2. The bottom of the upper mold 3 has a cavity, the size and shape of which match the lower die 8. During stamping, the upper die base 2 is driven by the stamping press to move along the guide rods 7 towards the lower die base 1, causing the upper mold 3 to move accordingly until the cavity at the bottom of the upper mold 3 fits against the top of the lower die 8, thus stamping the sheet metal between the upper mold 3 and the lower die 8. During the movement of the upper mold 3, its two side edges first abut against the lifting plate 5, generating a downward pushing force on the lifting plate 5, causing the stop block 9 at the top of the lifting plate 5 to disengage from the sheet metal, preventing interference between the stop block 9 and the sheet metal.

[0023] A pair of mounting blocks 14 are fixedly connected to the bottom sides of the upper mold base 2, and a punch head 15 is vertically fixedly connected to the bottom of the mounting blocks 14. During stamping, the mounting blocks 14 and the punch head 15 move with the upper mold 3. At this time, the punch head 15 first contacts the sheet metal and punches the sheet metal synchronously during the forming process.

[0024] Several spring telescopic rods 13 are vertically fixedly connected to the bottom of the upper mold base 2. The movable ends of the spring telescopic rods 13 are slidably connected to the upper mold 3 and extend to the bottom of the cavity. Several spring limiting pins 17 are vertically slidably connected inside the upper mold 3, and the bottom ends of the spring limiting pins 17 extend to the bottom of the cavity. The spring telescopic rods 13 and spring limiting pins 17 are located directly above the axis of the lower mold 8. During stamping, the upper mold base 2 and the upper mold 3 drive the spring telescopic rods 13 and spring limiting pins 17 to move synchronously. At this time, the spring telescopic rods 13 and spring limiting pins 17 extend to the bottom of the upper mold 3 under the action of elastic force, so that they first contact the centerline of the sheet metal, limit and fix the sheet metal, prevent the sheet metal from deflecting during the stamping process, and further improve the stamping accuracy.

[0025] The lower die 8 and the lower die base 1 have through holes 16 inside, which are coaxially arranged with the punch head 15. A pair of receiving boxes 12 are detachably installed at the bottom of the lower die base 1, and the receiving boxes 12 are located at the bottom of the through holes 16. During punching, excess waste material is discharged along the through holes 16 to the receiving boxes 12, which facilitates the centralized processing of waste material.

[0026] Working principle: Before punching, the lifting plate 5 is positioned at the top of the slide rail 4 under the elastic force of the spring rod 6. At this time, the flat plate is placed between the stop bars 10, so that both ends of the plate abut against the stop bars 10. The stop bars 10 can limit the ends of the plate. At the same time, the two sides of the plate are located between the inclined surfaces 18 on the top of the stop block 9. The stop block 9 and the inclined surfaces 18 can support and limit the two sides of the plate, so that the plate is horizontally positioned directly above the lower mold 8 before punching, avoiding the plate from tilting and affecting the forming accuracy of the heat insulation cover. During punching, the upper mold base 2 is driven by the punch press to move along the guide rod 7 towards the lower mold base 1, so that the upper mold 3 moves accordingly until the cavity at the bottom of the upper mold 3 fits against the top of the lower mold 8, thereby punching the plate between the upper mold 3 and the lower mold 8. During the movement of the upper mold 3, its two sides first abut against the lifting plate 5, generating force on the lifting plate 5. The downward thrust causes the stop block 9 at the top of the lifting plate 5 to detach from the plate, preventing interference between the stop block 9 and the plate. During stamping, the mounting block 14 and the punch head 15 move with the upper mold 3. At this time, the punch head 15 first contacts the plate and punches the plate synchronously during the forming process. During stamping, the upper mold base 2 and the upper mold 3 drive the spring telescopic rod 13 and the spring limit pin 17 to move synchronously. At this time, the spring telescopic rod 13 and the spring limit pin 17 extend to the bottom of the upper mold 3 under the action of elasticity, so that they first contact the center line of the plate and limit and fix the plate, preventing the plate from deflecting during the stamping process and further improving the stamping accuracy. After forming, the heat insulation cover is attached to the top surface of the lower mold 8. The spring top pin 11 can automatically lift the formed heat insulation cover for easy demolding. During punching, excess waste material is discharged through the through hole 16 to the receiving box 12, which facilitates the centralized processing of waste material.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat insulation cover stamping fixture for easy demolding, characterized in that: The device includes a lower mold base (1), a lower mold (8) is fixedly connected to the top of the lower mold base (1), the top of the lower mold (8) is arc-shaped, several baffles (10) are symmetrically and vertically fixedly connected to both ends of the lower mold (8), a pair of slide rails (4) are symmetrically arranged on both sides of the baffles (10), a lifting plate (5) is horizontally slidably connected between the slide rails (4) facing each other, several blocks (9) are symmetrically fixedly connected to the top of the lifting plate (5), several spring push rods (6) are vertically fixedly connected to the bottom of the lifting plate (5), the bottom end of the spring push rods (6) is slidably connected to the lower mold base (1), the blocks (9) and the baffles (10) are inclined surfaces (18) on the top of one side of the lower mold (8), several spring pins (11) are slidably connected to the top of the lower mold (8), and the spring pins (11) are perpendicular to the axis of the lower mold (8).

2. The heat insulation cover stamping fixture for easy demolding according to claim 1, characterized in that: The top of the lower mold base (1) is vertically fixedly connected to several guide rods (7), the top of the guide rods (7) is slidably connected to an outer sleeve (19), and the upper mold base (2) is horizontally fixedly connected between the outer sleeves (19).

3. The heat insulation cover stamping fixture for easy demolding according to claim 2, characterized in that: The bottom of the upper mold base (2) is fixedly connected to the upper mold (3), and the bottom of the upper mold (3) has a cavity, the size and shape of which match the lower mold (8).

4. A heat insulation cover stamping fixture for easy demolding according to claim 2, characterized in that: A pair of mounting blocks (14) are fixedly connected to the bottom sides of the upper mold base (2), and a punch head (15) is vertically fixedly connected to the bottom of the mounting block (14).

5. A heat insulation cover stamping fixture for easy demolding according to claim 4, characterized in that: The bottom of the upper mold base (2) is vertically fixedly connected with several spring telescopic rods (13). The movable end of the spring telescopic rod (13) is slidably connected to the upper mold (3) and extends to the bottom of the cavity. The interior of the upper mold (3) is vertically slidably connected with several spring limiting pins (17). The bottom end of the spring limiting pins (17) extends to the bottom of the cavity.

6. A heat insulation cover stamping fixture for easy demolding according to claim 5, characterized in that: The spring telescopic rod (13) and the spring limiting pin (17) are located directly above the axis of the lower mold (8).

7. A heat insulation cover stamping fixture for easy demolding according to claim 4, characterized in that: The lower mold (8) and the lower mold base (1) are provided with through holes (16), the through holes (16) are coaxially arranged with the punch head (15), and a pair of receiving boxes (12) are detachably provided at the bottom of the lower mold base (1), the receiving boxes (12) are located at the bottom of the through holes (16).

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