Product sinking forming die

Abstract

The invention provides a forming die for product sinking. The forming die comprises an upper die plate (1), a male die (3), a female die (4), a lower die base (5) and a positioning pin (7). The lower die holder (5) is an assembly and comprises a base plate and a cantilever structure, and a cantilever beam of the cantilever structure is parallel to the base plate; the female die (4) is arranged above the tail end of the cantilever beam; a positioning pin (7) is arranged on the female die (4); the thicknesses of the cantilever beam and the female die (4) are smaller than the inner diameter of the end face of the product tail section; the female die (4) is sleeved with a product, and the positioning pin (7) is sleeved with a bottom hole in the position, to be machined, of the product. The male die (3) is fixed below the upper die plate (1), and the upper die plate (1) is fixed below a sliding block of an oil press. A positioning hole matched with the positioning pin (7) is formed in the male die (3); product sunken molded surfaces are correspondingly designed on the male die (3) and the female die (4). The tail-section skin with the small opening inner diameter size can be assembled and disassembled on the mold, and sinking forming on the skin is achieved; and the problem of interference between the inner surface of the skin with the small opening inner diameter size and a cantilever of the press machine is solved.

Description

Technical Field

[0001] The invention belongs to the field of special process equipment, and in particular relates to a product sinking forming die. Background Art

[0002] The tail section skin of a certain existing product has a recessed cavity for assembling the tail swivel seat so that the tail swivel seat and the skin are fitted in a flat surface for easy sealing.

[0003] like Figure 3 and 4 As shown, the skin part is a cone, and the depression is close to the small end of the skin.

[0004] When a conventional sinking die is installed on a cantilever press to form a sinking cavity, the inner surface of the skin will interfere with the cantilever of the press due to the small inner diameter of the tail section skin, making it difficult to form using conventional methods. Summary of the invention

[0005] The purpose of the present invention is to provide a product sinking forming die, in order to achieve the sinking dimple forming requirements on a small-caliber skin, achieve the consistency of sinking dimple forming, and improve production efficiency.

[0006] The present invention provides a product sinking forming die, comprising: an upper die plate 1, a male die 3, a female die 4, a lower die seat 5, and a positioning pin 7;

[0007] The lower die base 5 is a combination, including: a base plate and a cantilever structure, the cantilever beam of the cantilever structure is parallel to the base plate; the die 4 is arranged above the end of the cantilever beam; the die 4 is provided with a positioning pin 7; the thickness of the cantilever beam and the die 4 is smaller than the inner diameter of the end face of the product tail section;

[0008] The product is sleeved on the die 4, and the bottom hole of the product to be processed is sleeved on the positioning pin 7;

[0009] The punch 3 is fixed below the upper mold plate 1, and the upper mold plate 1 is fixed below the slide block of the hydraulic press;

[0010] The punch 3 is provided with a positioning hole matching the positioning pin 7;

[0011] The convex die 3 and the concave die 4 are correspondingly designed with a surface for sinking the product.

[0012] Optionally, the lower mold base 5 further includes two groups of inclined reinforcement ribs distributed on both sides of the vertical pole, one group connecting the cantilever beam and the vertical pole of the cantilever structure, and the other group connecting the vertical pole and the base plate.

[0013] Optionally, the length of the base plate is not less than 40 cm, and the cantilever beam is projected within the outline of the base plate when viewed from above.

[0014] Optionally, the punch 3 is made of T12A carbon tool steel and quenched to HRC60-64.

[0015] Optionally, the lower die base 5 is made of No. 45 steel.

[0016] Optionally, the product sinking forming die further includes: a first set screw 2 and a second set screw 6;

[0017] The upper mold plate 1 and the punch 3 are fixedly connected by a first set screw 2 , and the punch 3 and the cantilever beam are fixedly connected by a second set screw 6 .

[0018] Optionally, when the product is sleeved on the die 4, the end of the product is sleeved with a partially inclined reinforcement rib connecting the cantilever beam and the vertical rod;

[0019] One end of the diagonal reinforcement connecting the vertical pole and the base plate is connected to the top of the vertical pole.

[0020] Optionally, the upright pole is welded to the base plate, and the height of the fillet weld between the upright pole and the base plate is not less than 8 mm.

[0021] The present invention provides a product sinking forming die, which has the advantages of enabling a tail section skin with a smaller inner diameter at the mouth to be loaded and unloaded on the die, thereby realizing sinking forming on the skin; and solving the interference problem between the inner surface of the skin with a smaller inner diameter at the mouth and the cantilever of a press. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of the forming die for sinking the product;

[0024] Figure 2 It is the left view of the forming die;

[0025] Figure 3 It is the main section view of the part;

[0026] Figure 4 This is a partial enlarged view of the part;

[0027] Description of reference numerals:

[0028] Upper template 1, first set screw 2, punch 3, die 4, lower die base 5, second set screw 6, positioning pin 7. DETAILED DESCRIPTION

[0029] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. The following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the protection scope of the specific claims of the present invention.

[0030] The product sinking forming die provided by the present invention is explained below in conjunction with the accompanying drawings.

[0031] The present invention provides a product sinking forming die, comprising: an upper die plate 1, a male die 3, a female die 4, a lower die seat 5, and a positioning pin 7;

[0032] The lower die base 5 is a combination, including: a base plate and a cantilever structure, the cantilever beam of the cantilever structure is parallel to the base plate; the die 4 is arranged above the end of the cantilever beam; the die 4 is provided with a positioning pin 7; the thickness of the cantilever beam and the die 4 is smaller than the inner diameter of the end face of the product tail section;

[0033] The product is sleeved on the die 4, and the bottom hole of the product to be processed is sleeved on the positioning pin 7;

[0034] The punch 3 is fixed below the upper mold plate 1, and the upper mold plate 1 is fixed below the slide block of the hydraulic press;

[0035] The punch 3 is provided with a positioning hole matching the positioning pin 7;

[0036] The convex die 3 and the concave die 4 are correspondingly designed with a surface for sinking the product.

[0037] Optionally, the lower mold base 5 further includes two groups of inclined reinforcement ribs distributed on both sides of the vertical pole, one group connecting the cantilever beam and the vertical pole of the cantilever structure, and the other group connecting the vertical pole and the base plate.

[0038] Optionally, the length of the base plate is not less than 40 cm, and the cantilever beam is projected within the outline of the base plate when viewed from above.

[0039] Optionally, the punch 3 is made of T12A carbon tool steel and quenched to HRC60-64.

[0040] Optionally, the lower die base 5 is made of No. 45 steel.

[0041] Optionally, the product sinking forming die further includes: a first set screw 2 and a second set screw 6;

[0042] The upper mold plate 1 and the punch 3 are fixedly connected by a first set screw 2 , and the punch 3 and the cantilever beam are fixedly connected by a second set screw 6 .

[0043] Optionally, when the product is sleeved on the die 4, the end of the product is sleeved with a partially inclined reinforcement rib connecting the cantilever beam and the vertical rod;

[0044] One end of the diagonal reinforcement connecting the vertical pole and the base plate is connected to the top of the vertical pole.

[0045] Optionally, the upright pole is welded to the base plate, and the height of the fillet weld between the upright pole and the base plate is not less than 8 mm.

[0046] like Figure 1 and Figure 2 As shown, the product sinking forming die provided by the present invention comprises: an upper forming die template 1, a first fixing screw 2, a punch 3, a concave die 4, a lower die seat 5, a second fixing screw 6, and a positioning pin 7.

[0047] The small end of the tail section skin (such as Figure 3 and Figure 4 ) is loaded into the die 4 from the left side of the loading, and is positioned by the locating pin 7. The upper template 1 drives the punch 3 to move downward. Under the interaction between the punch 3 and the die 4, qualified parts can be formed.

[0048] A punch 3 is installed on the upper mold plate 1. The punch is made of T12A carbon tool steel and is quenched to HRC60-64 to achieve wear resistance and ensure the strength and rigidity of the punch.

[0049] The lower die base 5 is a composite part, the main material of which is No. 45 steel, and has a cantilever structure, so that the small end of the skin can be easily placed therein; in order to increase the strength and rigidity, the lower die base adopts a design of two sets of inclined reinforcement ribs to ensure the strength and rigidity of the lower die base.

[0050] The length of the base plate of the lower die seat 5 is appropriately lengthened to increase the moment resistance capacity of the relative stress point; the cantilever beam is projected within the bottom plate contour in a top view to ensure the stability of the center of gravity of the entire lower die seat, prevent eccentric tipping, and ensure safe use.

[0051] The molding die wearing parts can be disassembled to facilitate the repair of damaged parts.

[0052] The assembly and positioning surfaces of the upper mold plate 1 and the punch 3, the concave mold 4 and the lower mold base 5 are all ground flat to ensure that the force direction of the mold is perpendicular to the bottom surface of the lower mold base 5.

[0053] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A product sinking forming die, characterized in that: include: An upper mold plate (1), a male mold (3), a female mold (4), a lower mold base (5), and a positioning pin (7); The lower die base (5) is a combined component, comprising: a base plate and a cantilever structure, wherein the cantilever beam of the cantilever structure is parallel to the base plate; the die (4) is arranged above the end of the cantilever beam; a positioning pin (7) is arranged on the die (4); the thickness of the cantilever beam and the die (4) is smaller than the inner diameter of the end face of the product tail section; The product is sleeved on the concave die (4), and the bottom hole of the product to be processed is sleeved on the positioning pin (7); The punch (3) is fixed below the upper mold plate (1), and the upper mold plate (1) is fixed below the slide block of the hydraulic press; The male mold (3) is provided with a positioning hole matching the positioning pin (7); The convex die (3) and the concave die (4) are correspondingly designed with a mold surface for sinking the product.

2. The product sinking forming die according to claim 1, characterized in that: The lower die base (5) also includes two groups of inclined reinforcement ribs distributed on both sides of the vertical pole, one group connecting the cantilever beam of the cantilever structure and the vertical pole, and the other group connecting the vertical pole and the base plate.

3. The product sinking forming die according to claim 1, characterized in that: The length of the base plate shall not be less than 40cm, and the cantilever beam shall be projected within the outline of the base plate when viewed from above.

4. The product sinking forming die according to claim 1, characterized in that: The punch (3) is made of T12A carbon tool steel and quenched to HRC60-64.

5. The product sinking forming die according to claim 1, characterized in that: The lower die base (5) is made of No. 45 steel.

6. The product sinking forming die according to claim 1, characterized in that: Also includes: A first set screw (2) and a second set screw (6); The upper mold plate (1) and the punch (3) are fixedly connected via a first fixing screw (2), and the punch (3) and the cantilever beam are fixedly connected via a second fixing screw (6).

7. The product sinking forming die according to claim 2, characterized in that: When the product is sleeved on the concave die (4), the end of the product is sleeved with a portion of the oblique tension reinforcement ribs connecting the cantilever beam and the vertical rod; One end of the diagonal reinforcement connecting the vertical pole and the base plate is connected to the top of the vertical pole.

8. The product sinking forming die according to claim 2, characterized in that: The vertical pole is welded to the base plate, and the height of the fillet weld between the vertical pole and the base plate shall not be less than 8mm.

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