A metal stamping die with buffer function

Abstract

The utility model discloses a metal stamping die with a buffering function, which relates to the technical field of stamping dies and comprises a base, a support structure is installed on the top of the base, an upper die structure and a lower die structure are installed on the support structure, an oil tank structure is installed on the upper wall of the base, an oil outlet structure and an oil inlet structure are installed between the oil tank structure and the lower die structure, the lower die structure comprises a lower stamping die and a buffer hydraulic pressure relief valve, and the lower stamping die is movably mounted on four light rods. The utility model replaces the existing spring buffering form with a hydraulic buffering form, and the hydraulic buffering can provide a stable buffering force, which will not change due to the stroke, so the buffering effect is better than that of the spring, and at the same time avoids the problems of uneven force and easy metal fatigue in the spring buffering process, so that the stamping operation process is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a metal part stamping die with a buffer function. Background Art

[0002] A stamping die is a process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). Among them, a cold stamping die (commonly known as a cold stamping die) is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation, thereby obtaining the desired parts.

[0003] Existing stamping dies use direct stamping, which directly contacts the material with a hard force, making the punch easily damaged, and in severe cases causing damage to the press. The "A stamping die with a buffering function" with publication number CN220781997U is reference document 1. In reference document 1, springs are installed to achieve buffering of stamping between dies, thereby avoiding hard collisions between dies, preventing damage to the dies, and extending the service life of the dies to a certain extent. However, the spring is a mechanical component, and after long-term use, metal fatigue and other problems will occur, directly leading to spring breakage. For the stamping die, if the buffer spring breaks, it is equivalent to returning to a hard collision between the dies, which can easily cause damage to the stamping die.

[0004] The comparative document 2 is "A stamping die with a buffer structure" with publication number CN215941252U. It is pointed out in the comparative document 2 that conventional stamping die buffering is mainly achieved by springs. Since the force distribution of the spring support is point-like, there is an uneven force problem in the gaps, which affects the buffering effect.

[0005] In summary, in the prior art, stamping dies generally use springs to achieve buffering. During the spring buffering process, there are problems such as uneven force and easy metal fatigue, which affects the stamping operation. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A metal stamping die with a buffering function comprises a base, a support structure is installed on the top of the base, an upper die structure and a lower die structure are installed on the support structure, an oil tank structure is installed on the upper wall of the base, and an oil outlet structure and an oil inlet structure are installed between the oil tank structure and the lower die structure;

[0009] The support structure comprises: a lower support plate, four polished rods and an upper top plate;

[0010] The lower support plate is mounted on the upper wall of the base, the four polished rods are respectively mounted on the upper wall of the lower support plate, the upper top plate is mounted on the upper wall of the four polished rods, the upper top plate is provided with a through hole, and the lower support plate is provided with a through hole;

[0011] The lower die structure comprises: a lower punching die and a buffer hydraulic pressure regulator;

[0012] The lower punching die is movably mounted on four polished rods, the buffer hydraulic device is mounted on the lower wall surface of the lower support plate, and the driving end of the buffer hydraulic device passes through the through hole of the lower support plate and is mounted on the lower wall surface of the lower punching die.

[0013] As a further solution of the utility model: the upper die structure comprises: an upper stamping die and a stamping hydraulic press;

[0014] The upper punching die is movably mounted on four polished rods, the punching hydraulic press is mounted on the upper wall of the upper top plate, and the driving end of the punching hydraulic press passes through the through hole of the upper top plate and is mounted on the upper wall of the upper punching die.

[0015] As a further solution of the utility model: the oil tank structure comprises: a hydraulic oil tank, an oil inlet and an oil pump;

[0016] The hydraulic oil tank is installed on the upper wall of the base, the oil inlet is installed on the upper wall of the hydraulic oil tank, and the oil pump is installed on the upper wall of the hydraulic oil tank.

[0017] As a further solution of the utility model: the oil outlet structure comprises: an oil outlet one-way valve and an oil outlet pipe;

[0018] The oil outlet one-way valve is installed on the side wall of the buffer hydraulic pressure relief device, and the two ends of the oil outlet pipe are installed inside the oil outlet one-way valve and the oil inlet respectively.

[0019] As a further solution of the utility model: the oil inlet structure comprises: an oil inlet one-way valve and an oil inlet pipe;

[0020] The oil inlet one-way valve is installed on the side wall of the buffer hydraulic pressure relief device, and the two ends of the oil inlet pipe are installed inside the oil inlet one-way valve and the oil pump respectively.

[0021] As a further solution of the utility model: the base includes a base plate and a fixing rod, the fixing rod is fixed at the corners of the base plate, and the fixing rod forms an accommodating space on the base plate.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] The utility model replaces the existing spring buffer form with a hydraulic buffer form. The hydraulic buffer can provide a stable buffer force, and this buffer force will not change due to the stroke, so the buffer effect is better than that of the spring. At the same time, it avoids the problems of uneven force and easy metal fatigue in the spring buffer process, making the stamping process more stable.

[0024] The utility model is provided with a support structure, which is the main structure for supporting the upper mold structure and the lower mold structure, and can limit the movement distance and direction of the upper mold structure and the lower mold structure, and can make the upper mold structure and the lower mold structure bite, so as to complete the stamping;

[0025] The utility model is provided with an upper die structure and a lower die structure. The upper stamping die can realize stamping with the lower stamping die under the action of the stamping hydraulic press, wherein the buffer hydraulic press can provide a buffer, which can change the extrusion force during the engagement process of the upper stamping die and the lower stamping die from a sudden increase to a slow change, thereby avoiding collision between the upper stamping die and the lower stamping die, thereby increasing the service life of the upper stamping die and the lower stamping die. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0027] Figure 2 This is a three-dimensional diagram of the oil tank structure in the utility model;

[0028] Figure 3 It is a three-dimensional diagram of the upper mold structure and the lower mold structure of the utility model;

[0029] Figure 4 It is a three-dimensional diagram of the support structure in the utility model;

[0030] The reference numerals and names in the figures are as follows:

[0031] 1. Base; 2. Lower support plate; 3. Polish rod; 4. Upper top plate; 5. Upper stamping die; 6. Stamping hydraulic press; 7. Lower stamping die; 8. Buffer hydraulic pressure regulator; 9. Hydraulic oil tank; 10. Oil inlet; 11. Oil pump; 12. Oil outlet check valve; 13. Oil outlet pipe; 14. Oil inlet check valve; 15. Oil inlet pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-4 A metal stamping die with a buffering function comprises: a base 1, a support structure is installed on the top of the base 1, an upper die structure and a lower die structure are installed on the support structure, an oil tank structure is installed on the upper wall of the base 1, and an oil outlet structure and an oil inlet structure are installed between the oil tank structure and the lower die structure;

[0034] The support structure comprises: a lower support plate 2, four polished rods 3 and an upper top plate 4;

[0035] The lower support plate 2 is installed on the upper wall of the base 1, the four light rods 3 are respectively installed on the upper wall of the lower support plate 2, the upper top plate 4 is installed on the upper wall of the four light rods 3, the upper top plate 4 is provided with a through hole, and the lower support plate 2 is provided with a through hole. The bracket structure is the main structure for supporting the upper mold structure and the lower mold structure, which can limit the movement distance and direction of the upper mold structure and the lower mold structure, and enable the upper mold structure and the lower mold structure to bite, thereby completing the stamping.

[0036] Specifically, the upper mold structure includes: an upper stamping mold 5 and a stamping hydraulic press 6; the upper stamping mold 5 is movably mounted on four light rods 3, the stamping hydraulic press 6 is installed on the upper wall of the upper top plate 4, and the driving end of the stamping hydraulic press 6 is installed on the upper wall of the upper stamping mold 5 through the through hole of the upper top plate 4, and the lower mold structure includes: a lower stamping mold 7 and a buffer hydraulic press 8; the lower stamping mold 7 is movably mounted on four light rods 3, the buffer hydraulic press 8 is installed on the lower wall of the lower support plate 2, and the driving end of the buffer hydraulic press 8 is installed on the lower wall of the lower stamping mold 7 through the through hole of the lower support plate 2. The upper stamping mold 5 can be stamped with the lower stamping mold 7 under the action of the stamping hydraulic press 6, wherein the buffer hydraulic press 8 can provide buffering, which can change the extrusion pressure during the engagement process of the upper stamping mold 5 and the lower stamping mold 7 from a sudden increase to a slow change, thereby avoiding collision between the upper stamping mold 5 and the lower stamping mold 7, thereby increasing the service life of the upper stamping mold 5 and the lower stamping mold 7.

[0037] Specifically, the oil tank structure includes: a hydraulic oil tank 9, an oil inlet 10 and an oil pump 11; the hydraulic oil tank 9 is installed on the upper wall of the base 1, the oil inlet 10 is installed on the upper wall of the hydraulic oil tank 9, and the oil pump 11 is installed on the upper wall of the hydraulic oil tank 9, and the oil outlet structure includes: an oil outlet check valve 12 and an oil outlet pipe 13; the oil outlet check valve 12 is installed on the side wall of the buffer hydraulic pressure vessel 8, and the two ends of the oil outlet pipe 13 are respectively installed inside the oil outlet check valve 12 and the oil inlet 10, and the oil inlet structure includes: an oil inlet check valve 14 and an oil inlet pipe 15; the oil inlet check valve 14 is installed on the side wall of the buffer hydraulic pressure vessel 8, and the two ends of the oil inlet pipe 15 are respectively installed inside the oil inlet check valve 14 and the oil pump 11, and the oil tank structure is used to store hydraulic oil, and provide the buffer hydraulic pressure vessel 8 with hydraulic oil that can realize the buffering function through the oil outlet structure and the oil inlet structure.

[0038] Working principle: When using the utility model, first connect the external AC power supply to the utility model to provide energy for the electrical appliances in the utility model. The operator first places the raw material metal plate to be stamped inside the lower stamping die 7, and then starts the stamping hydraulic press 6. The stamping hydraulic press 6 extends out, driving the upper stamping die 5 to move downward on the four light rods 3 until the upper stamping die 5 and the lower stamping die 7 are completely engaged to complete the stamping operation. During the stamping operation, the buffer press 8 will react with the stamping action. When the upper stamping die 5 just contacts the raw material metal plate, the lower stamping die 7 that holds the raw material metal plate will be subjected to positive pressure, and this pressure will be directly transmitted to the driving end of the buffer press 8. The driving end of the buffer press 8 that is subjected to pressure contracts, and the driving end of the stamping hydraulic press 6 continues to extend, and the buffer press The pressure on the driving end of 8 continues to increase until the pressure exceeds the threshold of the oil outlet one-way valve 12. The oil outlet one-way valve 12 opens, and the hydraulic oil inside the buffer hydrostatic accumulator 8 enters the interior of the hydraulic oil tank 9 through the oil outlet pipe 13. At this time, the driving end of the buffer hydrostatic accumulator 8 contracts, so that the driving end of the buffer hydrostatic accumulator 8 follows the stamping action for real-time buffering. The lower stamping die 7 is located above the lower support plate 2, and the upper stamping die 5 and the lower stamping die 7 are completely closed to complete the stamping operation. Then the driving end of the stamping hydraulic press 6 drives the upper stamping die 5 to reset, and the stamping hydraulic press 6 drives the upper stamping die 5 to shrink until the upper stamping die 5 and the upper top plate 4 are fitted. During the resetting of the upper stamping die 5, the oil pump 11 starts working, and the hydraulic oil inside the hydraulic oil tank 9 passes through the oil inlet pipe 15 and the oil inlet one-way valve 14 to allow the buffer hydrostatic accumulator 8 to drive the lower stamping die 7 to reset.

[0039] Through the buffering and resetting of the buffer hydraulic pressure regulator 8, the lower stamping die 7 can follow the stamping operation and perform real-time buffering and resetting operations. The operation process is smooth and the buffering effect is good. Moreover, the external hydraulic oil tank 9, oil inlet 10, oil pump 11, oil outlet check valve 12, oil outlet pipe 13, oil inlet check valve 14 and oil inlet pipe 15 are easy to repair, with low maintenance cost and high visualization. Faults in the operation process can be discovered in time, the operation failure rate can be reduced, and the overall operation effect of the utility model is more stable.

[0040] The spring follows Hooke's law during elastic deformation, that is, the force applied by the spring to the object is linearly related to the change in length. In other words, the greater the change in the spring, the greater the elastic force. In addition, two different springs are used for parallel buffering in Comparative Document 1. During each stamping operation, the press needs to overcome the elastic deformation of multiple groups of springs, resulting in additional energy consumption and increasing the processing cost of stamping. The utility model adopts hydraulic buffering. During the downward stamping process, the upper stamping die 5 does not need to overcome the elastic force of the spring, which is beneficial to energy saving and environmental protection, while saving production costs.

[0041] The fixing rod forms a accommodating space on the base plate, so as to facilitate the installation of the hydraulic oil tank 9, the oil outlet structure and the oil inlet structure. At the same time, a transparent cover can be installed in the accommodating space to form a relatively independent accommodating space with good visual effect, which is convenient for the inspection and maintenance of the hydraulic oil tank 9, the oil outlet structure and the oil inlet structure.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A metal stamping die with a buffering function, comprising: The base (1) is characterized in that a support structure is installed on the top of the base (1), an upper mold structure and a lower mold structure are installed on the support structure, an oil tank structure is installed on the upper wall of the base (1), and an oil outlet structure and an oil inlet structure are installed between the oil tank structure and the lower mold structure; The support structure comprises: a lower support plate (2), four bare rods (3) and an upper top plate (4); The lower support plate (2) is mounted on the upper wall surface of the base (1), the four polished rods (3) are respectively mounted on the upper wall surface of the lower support plate (2), the upper top plate (4) is mounted on the upper wall surface of the four polished rods (3), the upper top plate (4) is provided with a through hole, and the lower support plate (2) is provided with a through hole; The lower die structure comprises: a lower punching die (7) and a buffer pressure relief device (8); The lower punching die (7) is movably mounted on the four polished rods (3), the buffer depressurizer (8) is mounted on the lower wall surface of the lower support plate (2), and the driving end of the buffer depressurizer (8) passes through the through hole of the lower support plate (2) and is mounted on the lower wall surface of the lower punching die (7).

2. A metal stamping die with a buffering function according to claim 1, characterized in that: The upper die structure comprises: an upper stamping die (5) and a stamping hydraulic press (6); The upper punching die (5) is movably mounted on the four polished rods (3), the punching hydraulic press (6) is mounted on the upper wall surface of the upper top plate (4), and the driving end of the punching hydraulic press (6) passes through a through hole of the upper top plate (4) and is mounted on the upper wall surface of the upper punching die (5).

3. The metal stamping die with buffer function according to claim 1, characterized in that: The oil tank structure comprises: a hydraulic oil tank (9), an oil inlet (10) and an oil pump (11); The hydraulic oil tank (9) is mounted on the upper wall surface of the base (1), the oil inlet (10) is mounted on the upper wall surface of the hydraulic oil tank (9), and the oil pump (11) is mounted on the upper wall surface of the hydraulic oil tank (9).

4. The metal stamping die with buffer function according to claim 1, characterized in that: The oil outlet structure comprises: an oil outlet one-way valve (12) and an oil outlet pipe (13); The oil outlet check valve (12) is mounted on the side wall of the buffer hydraulic pressure relief device (8), and the two ends of the oil outlet pipe (13) are respectively mounted inside the oil outlet check valve (12) and the oil inlet (10).

5. The metal stamping die with buffer function according to claim 1, characterized in that: The oil inlet structure comprises: an oil inlet check valve (14) and an oil inlet pipe (15); The oil inlet check valve (14) is mounted on the side wall of the buffer hydraulic pressure regulator (8), and the two ends of the oil inlet pipe (15) are respectively mounted inside the oil inlet check valve (14) and the oil pump (11).

6. The metal stamping die with buffer function according to claim 1, characterized in that: The base (1) comprises a base plate and a fixing rod, wherein the fixing rod is fixed at four corners of the base plate, and an accommodation space is formed on the base plate by the fixing rod.

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