High-precision stamping die

Abstract

The utility model relates to the technical field of high-precision stamping dies, and discloses a high-precision stamping die. The carrier is used for fixedly supporting a lower die, the upper die is fixed at the movable end of the hydraulic cylinder, the upper die and the lower die are coaxial, a ring groove forming ring is arranged on the lower die, the upper die extends into the ring groove forming ring after being pressed downwards, and a circular raw material flatly placed on the lower die is subjected to punch forming. And a through exhaust hole is formed in the upper die. The pneumatic part is additionally arranged in the die, so that raw materials can be adsorbed and fixed before stamping, displacement of the raw materials caused by vibration in the moving process of a machine is avoided, and stamping precision is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of high-precision stamping die technology, and in particular to a high-precision stamping die. Background Technology

[0002] The bottom of existing thermos cups is formed by stamping. However, the positioning components of existing stamping dies cannot provide a good pre-fixing effect on the raw material. Furthermore, the stamping machine inevitably vibrates during operation, which can cause the raw material to shift before forming, resulting in asymmetry of the entire stamped part. In addition, the efficiency of removing the stamped part is low.

[0003] This proposal is put forward in order to improve and optimize the above-mentioned problems or shortcomings. Utility Model Content

[0004] A high-precision stamping die, comprising:

[0005] The base is a carrier that securely supports the lower mold.

[0006] The hydraulic cylinder and the upper mold fixed to the movable end of the hydraulic cylinder are coaxial. The upper mold and the lower mold are provided with an annular groove forming ring. After the upper mold is pressed down, it extends into the annular groove forming ring to stamp the circular raw material placed flat on the lower mold. The upper mold is provided with a through vent hole.

[0007] A pneumatic compensator is installed on the lower die and attracts the bottom of the circular raw material. Under the action of an external air pump, it generates suction to hold the circular raw material in place, ensuring that it does not shift during the stamping process and improving the stamping accuracy. After the stamping is completed, the pneumatic compensator expands between the upper end face of the lower die and the stamped part under the action of another matching air pump, which facilitates the ejection of the stamped part after the upper die is lifted, making it easy to pick up and effectively improving efficiency.

[0008] Preferably, the pneumatic compensation member comprises a gas pump A, a gas pump B, a gas supply pipeline, a three-way valve and a composite suction nozzle, wherein a multi-stage counterbore is arranged in the middle of the lower die, the composite suction nozzle is slidingly inserted into the multi-stage counterbore, a spring is further arranged in the multi-stage counterbore for lifting the composite suction nozzle, the upper end of the composite suction nozzle protrudes from the upper end surface of the lower die under no external pressure to facilitate the adsorption of a circular raw material, the upper end surface of the composite suction nozzle is flush with the upper end surface of the lower die under external pressure through the extension stroke of the spring to avoid the deformation of the circular raw material, the gas pump B and the gas pump A are respectively communicated with the three-way valve through independent gas supply pipelines, the three-way valve is communicated with the composite suction nozzle through a gas supply hose, the three-way valve selectively communicates the gas pump B or the gas pump A with the composite suction nozzle, one of the gas pump A or the gas pump B is used for suction and the other is used for injection, so that suction is generated at the upper end of the composite suction nozzle when the circular raw material is placed, and expansion force is generated to lift the stamping part after the forming is completed.

[0009] Preferably, the composite suction nozzle comprises a cylindrical metal base and a rubber suction nozzle fixed on the metal base, the gas supply hose is communicated with the rubber suction nozzle through the metal base, and the spring abuts against the bottom wall of the metal base, and the metal base is in gap sliding fit with the inner wall of the multi-stage counterbore on the lower die.

[0010] Preferably, the lower die is provided with a lower die forming guide arc surface, and the upper die is provided with an upper die forming guide arc surface, so as to facilitate rapid guiding and forming during stamping and facilitate metal extension.

[0011] Preferably, the lower die is provided with a lower die forming guide arc surface, and the upper die is provided with an upper die forming guide arc surface, so as to facilitate rapid guiding and forming during stamping and facilitate metal extension.

[0012] Preferably, the inner wall of the bracket is fixedly provided with a sliding rail, a sliding block is slidingly arranged on the sliding rail, an auxiliary stabilizing connecting rod is fixedly arranged between the sliding blocks by bolts, and the auxiliary stabilizing connecting rod is sleeved and clamped on the outer side of the telescopic rod of the hydraulic cylinder.

[0013] The utility model discloses the advantages and positive effects are:

[0014] 1. By adopting the pneumatic component in the mould can be fixed to the raw material before stamping avoids the vibration during the machine movement and leads to the displacement of raw material, effectively guarantees the precision of stamping.

[0015] 2. Through the inflation effect of the pneumatic component after stamping, the stamping part is quickly lifted, and the working efficiency is effectively improved. DRAWINGS

[0016] The utility model is further illustrated below in combination with the drawings and examples.

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the gas circuit connecting part in the utility model.

[0021] Mark in the drawing: 10, air pump A;11, air pump B;12, three-way valve;13, compound suction nozzle;14, base;15, support;16, slide rail;17, sliding block;18, auxiliary stabilizing link;19, hydraulic cylinder;20, upper die;21, exhaust hole;22, lower die forming guide camber;23, upper die forming guide camber;24, lower die;25, gas supply pipeline;26, gas supply hose;27, ring groove forming ring. Specific implementation

[0022] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic diagrams, only illustrate the basic structure of the utility model in a schematic way, therefore it only shows the relevant components of the utility model.

[0023] If the application examples involve directional indication or position relation terms (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), then such terms are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings);If the specific posture changes, then the directional indication or position relationship also changes accordingly. In addition, the application examples involve "first", "second" and other terms, only for the convenience of description, and cannot be understood as indicating or implying relative importance.

[0024] The utility model examples are further described below in combination with the drawings:

[0025] As Figures 1-3 Indicated, a high-precision stamping die of the utility model, comprising;

[0026] Base 14, the carrier of fixed support lower die 24;

[0027] Hydraulic cylinder 19 and fixed in the movable end of the hydraulic cylinder 19 upper die 20, the upper die 20 and the lower die 24 coaxial, the lower die 24 is provided with ring groove forming ring 27, the upper die 20 after pressing into the ring groove forming ring 27, the circular raw material is punched into the lower die 24, the upper die 20 is provided with a through exhaust hole 21;

[0028] Pneumatic compensation, provided on the lower die 24 and circular raw material bottom suction and in the external air pump under the action of suction force will circular raw material adsorbed to ensure that there is no displacement in the process of stamping, improve the precision of stamping, the pneumatic compensation in the lower die 24 after the completion of the upper end face and stamping between the gas expansion in turn facilitate in the upper die 20 after lifting the stamping out of the way to take, effectively improve the efficiency.

[0029] Preferably, the pneumatic compensation includes air pump A10, air pump B11, gas supply pipeline 25, three-way valve 12, composite suction nozzle 13, wherein the lower die 24 is provided with a plurality of stepped hole in the middle, the composite suction nozzle 13 is slidably inserted in the stepped hole, and the stepped hole is also provided with a spring for lifting the composite suction nozzle 13, the upper end of the composite suction nozzle 13 is protruded relative to the upper end face of the lower die 24 without external pressure, which is convenient for adsorbing the circular raw material, the upper end face of the composite suction nozzle 13 is flush with the upper end face of the lower die 24 under the action of external pressure, which avoids deformation of the circular raw material, the air pump B11 and the air pump A10 are respectively communicated with the three-way valve 12 through independent gas supply pipeline 25, the three-way valve 12 is communicated with the composite suction nozzle 13 through the gas supply hose 26, the three-way valve 12 can selectively communicate the air pump B11 or the air pump A10 with the composite suction nozzle 13, one of the air pump A10 or the air pump B11 is air suction and the other is air injection, so that the suction force is generated at the upper port of the composite suction nozzle 13 when the circular raw material is placed, and the expansion force is generated to lift the stamping after forming.

[0030] Preferably, the composite suction nozzle 13 includes a cylindrical metal base and a rubber suction nozzle fixed on the metal base, the gas supply hose 26 is communicated with the rubber suction nozzle through the metal base, and the spring is abutted against the bottom wall of the metal base, the metal base and the inner wall of the stepped hole on the lower die 24 are gap slidingly fitted.

[0031] Preferably, the lower die 24 is provided with a lower die forming guide arc surface 22, and the upper die 20 is provided with an upper die forming guide arc surface 23, which facilitates rapid guiding and forming during stamping and facilitates metal extension.

[0032] Preferably, a support 15 is further included, which is fixed on the base 14, and the hydraulic cylinder 19 is fixed on the support 15, so that the carriers of the upper die 20 and the lower die 24 are fixedly connected, and the accumulated errors generated in the assembling and mechanical movement process are smaller.

[0033] Preferably, the inner wall of the support 15 is fixedly provided with sliding rails 16, the sliding rails 16 are slidably provided with sliding blocks 17, the sliding blocks 17 are fixedly provided with auxiliary stabilizing links 18 through bolts, and the auxiliary stabilizing links 18 are sleeved and clamped and fixed on the telescopic rods of the hydraulic cylinders 19.

[0034] It should be emphasized that the embodiments of the utility model are illustrative rather than restrictive, and thus the utility model is not limited to the embodiments described in the specific embodiments, and any other embodiments derived by those skilled in the art according to the technical scheme of the utility model also belong to the protection scope of the utility model.

Claims

1. A high-precision stamping die, comprising; characterized in that: a base (14) fixedly supporting a carrier of a lower die (24); a hydraulic cylinder (19) and an upper die (20) fixed to the movable end of the hydraulic cylinder (19), the upper die (20) and the lower die (24) being coaxial, the lower die (24) being provided with a ring groove forming ring (27), the upper die (20) being lowered into the ring groove forming ring (27) to stamp a circular raw material placed on the lower die (24), the upper die (20) being provided with a through exhaust hole (21); a pneumatic compensation element arranged on the lower die (24) to attract the bottom of the circular raw material and generate suction under the action of an external air pump to ensure that the circular raw material does not displace during stamping, thereby improving the precision of stamping, the pneumatic compensation element forming an inflation between the upper end surface of the lower die (24) and the stamped part under the action of another air pump matched therewith after stamping is completed, thereby facilitating the ejection of the stamped part after the upper die (20) is lifted, and improving the efficiency.

2. The high-precision stamping die according to claim 1, characterized in that: The pneumatic compensation element comprises an air pump A (10), an air pump B (11), a gas supply pipeline (25), a three-way valve (12), and a composite suction nozzle (13), wherein a multi-stage counterbore is arranged in the middle of the lower die (24), the composite suction nozzle (13) is slidingly inserted into the multi-stage counterbore, and a spring is further arranged in the multi-stage counterbore to lift the composite suction nozzle (13), the upper end of the composite suction nozzle (13) protrudes relative to the upper end surface of the lower die (24) under the action of no external pressure to facilitate the suction of the circular raw material, the upper end surface of the composite suction nozzle (13) is flush with the upper end surface of the lower die (24) under the action of external pressure through the extension stroke of the spring to avoid deformation of the circular raw material, the air pump B (11) and the air pump A (10) are respectively connected to the three-way valve (12) through independent gas supply pipelines (25), the three-way valve (12) is connected to the composite suction nozzle (13) through a gas supply hose (26), the three-way valve (12) can selectively connect the air pump B (11) or the air pump A (10) to the composite suction nozzle (13), one of the air pump A (10) or the air pump B (11) is used for suction and the other is used for injection, thereby generating suction at the upper port of the composite suction nozzle (13) when placing the circular raw material and generating inflation to lift the stamped part after forming.

3. A high-precision stamping die according to claim 2, characterized in that: The composite suction nozzle (13) comprises a cylindrical metal base and a rubber suction nozzle fixed to the metal base, the gas supply hose (26) passes through the metal base and is connected to the rubber suction nozzle, and the spring abuts against the bottom wall of the metal base, the metal base and the inner wall of the multi-stage counterbore on the lower die (24) are gap slidingly fitted.

4. The high-precision stamping die according to claim 3, characterized in that: The lower die (24) is provided with a lower die forming guide arc surface (22), and the upper die (20) is provided with an upper die forming guide arc surface (23), thereby facilitating rapid guide forming during stamping and facilitating metal extension.

5. A high-precision stamping die according to claim 4, characterized in that: Also include a bracket (15), the bracket (15) is fixed on the base (14), the hydraulic cylinder (19) is fixed on the bracket (15), so that the carrier of the upper die (20) and the carrier of the lower die (24) are fixedly connected, and the cumulative error generated in the assembly and mechanical movement process is smaller.

6. A high-precision stamping die according to claim 5, characterized in that: The inner wall of the bracket (15) is fixedly provided with a sliding rail (16), the sliding rail (16) is slidably provided with a sliding block (17), the sliding blocks (17) are fixedly provided with auxiliary stabilizing links (18) through bolts, and the auxiliary stabilizing links (18) are sleeved and clamped and fixed on the telescopic rod of the hydraulic cylinder (19).

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