Pneumatic type deep drawing die

Abstract

The utility model discloses a pneumatic type deep drawing die which comprises an upper die mechanism, a lower die mechanism arranged under the upper die mechanism and an air compressor connected with the lower die mechanism, and is characterized in that the lower die mechanism comprises a die table, a lower die arranged on the die table and a plurality of air cylinders arranged on the die table; the plurality of cylinders are arranged in an array; a plurality of guide holes are formed in the mold table, and a plurality of guide columns are arranged on the lower mold; a plurality of cylinder cavities are formed in the mold table; the cylinder cavities are far longer, wider and higher than the cylinders; the output ends of the air cylinders are fixedly connected with the lower die, an output shaft of each air cylinder is sleeved with a spring, one end of each spring abuts against the lower die, and the other end of each spring abuts against the die table. The upper die mechanism comprises an upper die air cylinder, an upper die top plate arranged on the upper die air cylinder and an upper die arranged on the upper die top plate. Compared with a traditional deep drawing die only using a spring, the deep drawing die provided by the utility model provides better pressure control and impact reduction capability.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a pneumatic drawing die. Background Art

[0002] A mold is a tool used to make formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the outer shape of articles by changing the physical state of the formed material.

[0003] Currently, the prior art CN216938007U discloses a drawing die, which uses a spring to drive a material bearing ring to press tightly against a sheet material to fix the position of the sheet material during the drawing process of the sheet material.

[0004] The above prior art also has the following problems:

[0005] 1. Lack of a buffering mechanism, the impact on the material when the mold closes is relatively large, which may cause local damage or uneven deformation of the material.

[0006] 2. Lack of an adsorption mechanism, a huge impact force is generated on the material when the mold closes, which may cause the material to fly away or shift, resulting in dangerous accidents.

[0007] Therefore, it is necessary to provide a pneumatic drawing die to solve the above technical problems. Summary of the Invention

[0008] The utility model overcomes the deficiencies of the prior art and provides a pneumatic drawing die.

[0009] To achieve the above object, the technical solution adopted by the utility model is: a pneumatic drawing die, including an upper die and a lower die, characterized in that:

[0010] A pneumatic drawing die, including an upper die mechanism, a lower die mechanism disposed directly below the upper die mechanism, and an air compressor connected to the lower die mechanism, characterized in that:

[0011] The lower die mechanism includes a mold table, a lower die disposed on the mold table, and a plurality of cylinders disposed on the mold table; the plurality of cylinders are arranged in an array; a plurality of guide holes are provided on the mold table, and a plurality of guide posts are provided on the lower die; a plurality of cylinder cavities are internally provided on the mold table, and the length, width, and height of the cylinder cavity are much larger than those of the cylinder;

[0012] The output ends of the plurality of cylinders are fixedly connected to the lower die, and a spring is sleeved on each output shaft of the cylinder. One end of each of the plurality of springs abuts against the lower die, and the other end abuts against the mold table;

[0013] The upper die mechanism includes: an upper die cylinder, an upper die top plate provided on the upper die cylinder, and an upper die provided on the upper die top plate.

[0014] In a preferred embodiment of the present invention, a plurality of the guide holes are matched with the guide posts, and the plurality of guide posts are slidably connected to the plurality of guide holes.

[0015] In a preferred embodiment of the present invention, a plurality of cylinder grooves are provided on the die table, the cylinder grooves are matched with the cylinder cavities, and each cylinder groove communicates with the corresponding cylinder cavity.

[0016] In a preferred embodiment of the present invention, the cylinders are matched with the cylinder cavities, and each cylinder is sleeved in the matched cylinder cavity.

[0017] In a preferred embodiment of the present invention, a lower die groove is provided on the die table, the lower die groove is matched with the shape of the lower die; air holes are provided at the bottom of the lower die groove.

[0018] In a preferred embodiment of the present invention, a lubricating fluid collecting groove is provided on the die table, and the lubricating fluid collecting groove is connected to the air holes;

[0019] In a preferred embodiment of the present invention, the air compressor is connected to the air holes.

[0020] In a preferred embodiment of the present invention, heating wires are provided at the corners of the upper die.

[0021] In a preferred embodiment of the present invention, a spray gun is provided on the upper die top plate.

[0022] In a preferred embodiment of the present invention, a forming groove is provided on the lower die, and the forming groove is matched with the shape of the upper die.

[0023] The present invention solves the defects existing in the background art, and the present invention has the following beneficial effects:

[0024] (1) In the present invention, the output ends of a plurality of cylinders are fixedly connected to the lower die, and springs are sleeved on the output shafts of each cylinder. This component plays a role of buffering and resetting during the operation of the overall equipment, reducing the mechanical stress of the upper die on the lower die. Compared with the traditional deep drawing die that only uses springs, the present invention provides better pressure control and the ability to reduce impact.

[0025] (2) The lower die mechanism in the present utility model creates negative air pressure in the lower die groove through an air compressor to achieve the adsorption of the blanking plate. This component plays a role in stabilizing the blanking plate during the operation of the overall equipment, ensuring the fixed position of the blanking plate during the drawing process. Compared with the traditional spring-driven material supporting ring, pneumatic adsorption provides a more uniform adsorption force, reducing the offset of the blanking plate caused by uneven spring force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0027] Figure 1 is the overall three-dimensional structure diagram of the preferred embodiment of the present utility model;

[0028] Figure 2 is the three-dimensional structure diagram of the lower die mechanism of the preferred embodiment of the present utility model;

[0029] In the figure: 1. Upper die mechanism; 2. Lower die mechanism; 3. Die table; 4. Lower die; 5. Cylinder; 6. Spring; 7. Upper die cylinder; 8. Upper die top plate; 9. Upper die; 10. Spray gun. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present utility model will now be further described in detail in conjunction with the drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0031] As Figure 1 , Figure 2 shown, a pneumatic drawing die includes an upper die mechanism 1, a lower die mechanism 2 disposed directly below the upper die mechanism 1, and an air compressor connected to the lower die mechanism 2;

[0032] The blanking plate is placed on the lower die 4, and the air compressor creates negative air pressure in the lower die groove through the air holes, and the lower die 4 adsorbs the blanking plate.

[0033] The lower die mechanism 2 includes a die table 3, a lower die 4 disposed on the die table 3, and a plurality of cylinders 5 disposed on the die table 3; the plurality of cylinders 5 are arranged in an array; a plurality of guide holes are provided on the die table 3, and a plurality of guide posts are provided on the lower die 4; a plurality of cylinder cavities are internally provided on the die table 3, and the length, width, and height of the cylinder cavity are much larger than those of the cylinder 5; the lower die mechanism 2 cooperates with the upper die mechanism 1 to support the sheet material and form the space required for drawing. Through the arrangement of the die table 3, the lower die 4, and the cylinders 5, stable support and positioning are provided for the sheet material. Ensure the stability of the sheet material during the drawing process, reducing deformation and offset.

[0034] The lower die 4 is provided with a forming groove, and the forming groove is matched with the shape of the upper die 9. The forming groove is matched with the shape of the upper die 9 for forming the sheet; the sheet is pressed into the forming groove by the upper die 9 to realize deep drawing forming. The forming groove ensures the consistency and accuracy of sheet forming and improves the geometric accuracy of the product.

[0035] The output ends of several cylinders 5 are fixedly connected to the lower die 4, and a spring 6 is sleeved on the output shaft of each cylinder 5. One end of several springs 6 abuts against the lower die 4, and the other end abuts against the die table 3;

[0036] The upper die mechanism 1 includes: an upper die cylinder 7, an upper die top plate 8 provided on the upper die cylinder 7, and an upper die 9 provided on the upper die top plate 8. The upper die mechanism 1 is the main component applying pressure during the deep drawing process. The upper die 9 is driven by the cylinder 5 to move downward to apply pressure to the sheet. The coordinated work of the upper die cylinder 7, the upper die top plate 8 and the upper die 9 realizes the deep drawing forming of the sheet. Ensure that the sheet is uniformly stressed during the deep drawing process and improve the forming accuracy and quality.

[0037] Heating wires are arranged at the corners of the upper die 9. The heating wires are used for local heating of the sheet to reduce the hardness of the sheet. During the deep drawing process, the heating wires preheat the sheet to improve the plasticity of the sheet. Heating the sheet reduces cracks and defects during the deep drawing process and improves the forming quality.

[0038] A spray gun 10 is provided on the upper die top plate 8. The spray gun 10 is used for spraying lubricant. During the deep drawing process, the spray gun 10 sprays lubricant onto the surface of the sheet to reduce friction.

[0039] Several guide holes are matched with guide posts, and several guide posts are slidably connected with several guide holes. The guide holes and guide posts ensure the precise guidance between the cylinder 5 and the die table 3. The guide posts slide in the guide holes to ensure the stable movement of the output shaft of the cylinder 5; improve the positioning accuracy of the die and reduce the processing error.

[0040] Several cylinder grooves are provided on the die table 3, and the cylinder grooves are matched with the cylinder cavities. Each cylinder groove communicates with the corresponding cylinder cavity. The cylinder grooves are matched with the cylinder cavities to ensure the correct position and stable operation of the cylinder 5

[0041] The cylinder 5 is matched with the cylinder cavity, and each cylinder 5 is sleeved in the matched cylinder cavity. The cylinder cavity provides an installation space for the cylinder 5, and the size of the cylinder cavity is larger than that of the cylinder 5 to ensure convenient installation of the cylinder 5;

[0042] A lower die groove is provided on the die table 3, and the lower die groove is matched with the shape of the lower die 4; air holes are provided at the bottom of the lower die groove. The lower die groove provides an installation space for the lower die 4.

[0043] A lubricant collection groove is provided on the die table 3, and the lubricant collection groove is connected with the air holes. The lubricant collection groove is used for storing lubricant to realize the economical use of lubricant.

[0044] The air compressor is connected to the air holes. The air compressor creates negative air pressure to adsorb the material plate.

[0045] When the present utility model is in use, place the material plate on the lower die 4 and align it with the forming groove on the lower die 4; the air compressor creates negative air pressure in the lower die groove through the air holes to make the lower die 4 adsorb the material plate; start the cylinder 5, and the spring 6 lifts the lower die 4 upward by a certain height; start the upper die cylinder 7 to drive the upper die 9 to press downward; during the downward pressing process, the upper die 9 applies pressure to the plate, and the lower die 4 starts to reset. The spring 6 has a certain buffering effect, reducing the mechanical stress of the upper die 9 on the lower die 4, and the upper die 9 continues to press the entire lower die 4 downward. The forming grooves of the upper die 9 and the lower die 4 cooperate to achieve the deep drawing forming of the plate. After the plate forming is completed, turn off the air compressor, disconnect the negative air pressure, and the lower die 4 releases the material plate.

[0046] Based on the ideal embodiments of the present utility model as inspiration, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A pneumatic drawing die, comprising an upper die mechanism (1), a lower die mechanism (2) arranged directly below the upper die mechanism (1), and an air compressor connected to the lower die mechanism (2), characterized in that: The lower mold mechanism (2) comprises a mold table (3), a lower mold (4) arranged on the mold table (3), and a plurality of cylinders (5) arranged on the mold table (3); the plurality of cylinders (5) are arranged in an array; the mold table (3) is provided with a plurality of guide holes, and the lower mold (4) is provided with a plurality of guide columns; the mold table (3) is provided with a plurality of cylinder cavities, and the length, width and height of the cylinder cavities are much greater than those of the cylinders (5); The output ends of the cylinders (5) are fixedly connected to the lower mold (4), and a spring (6) is sleeved on the output shaft of each cylinder (5). One end of the springs (6) abuts against the lower mold (4), and the other end abuts against the mold table (3); The upper die mechanism (1) comprises: an upper die cylinder (7), an upper die top plate (8) arranged on the upper die cylinder (7), and an upper die (9) arranged on the upper die top plate (8).

2. A pneumatic drawing die according to claim 1, characterized in that: A plurality of the guide holes are matched with the guide posts, and a plurality of the guide posts are slidably connected with a plurality of the guide holes.

3. A pneumatic drawing die according to claim 1, characterized in that: The mold table (3) is provided with a plurality of cylinder grooves, the cylinder grooves match the cylinder cavities, and each of the cylinder grooves is connected to the corresponding cylinder cavity.

4. The pneumatic drawing die according to claim 1, characterized in that: The cylinder (5) matches the cylinder cavity, and each cylinder (5) is sleeved in the matching cylinder cavity.

5. The pneumatic drawing die according to claim 1, characterized in that: The mold table (3) is provided with a lower mold groove, the shape of which matches that of the lower mold (4); and an air hole is provided at the bottom of the lower mold groove.

6. A pneumatic drawing die according to claim 5, characterized in that: The mold platform (3) is provided with a lubricating liquid collecting tank, and the lubricating liquid collecting tank is connected to the air hole.

7. The pneumatic drawing die according to claim 5, characterized in that: The air compressor is connected to the air hole.

8. The pneumatic drawing die according to claim 1, characterized in that: Heating wires are arranged at the corners of the upper die (9).

9. The pneumatic drawing die according to claim 1, characterized in that: A spray gun (10) is arranged on the upper mold top plate (8).

10. The pneumatic drawing die according to claim 1, characterized in that: The lower die (4) is provided with a molding groove, and the molding groove matches the shape of the upper die (9).

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