CN116618527A - Adjustable resistance stamping die and adjusting method thereof - Google Patents

Abstract

The invention discloses an adjustable resistance stamping die and an adjusting method thereof, which belong to the technical field of stamping dies and comprise a die carrier, wherein the die carrier is arranged on an external machine tool; the upper pressing plate is internally provided with a movable tool apron, the tool apron is provided with a punch, and the punch protrudes out of the surface of the upper pressing plate; and the lower pressing plate is provided with a stamping groove, and the stamping groove corresponds to the punch in position. According to the invention, the driving assembly is adopted to drive the tool apron, so that the position of the punch on the tool apron is changed, when the punching operation is required to be carried out on the positions of different tool depths of the alloy resistor, the position of the tool depth of the punching die is further adjusted by adjusting the position of the tool apron, the punching operation of the alloy resistor is realized, the alloy resistor is not required to be moved, the alloy resistor is ensured to be stably punched, the cost is effectively reduced, and the operation is more convenient.

Description

An adjustable resistance stamping die and its adjustment method

technical field

The invention belongs to the technical field of stamping dies, in particular to an adjustable resistance stamping die and an adjusting method thereof.

Background technique

Alloy resistors are mainly used to detect current, so they are also called current detection resistors, sampling resistors or sampling resistors and so on. The material of alloy resistors is mainly copper alloy. Each manufacturer has different material ratios in production and research and development. The more common alloy resistor materials on the market are: manganese-copper alloy, iron-chromium-aluminum alloy, constantan alloy, nickel-chromium alloy , Karma alloy, nickel copper alloy and so on. With low resistance, high stability, high power and other characteristics.

For alloy resistors, the stamping process is usually performed at a fixed knife depth position. When the resistivity of the stamping raw material of the alloy resistor changes, it is necessary to use different knife depth positions for stamping operations, so the knife depth of the stamping die needs to be moved. The effect of fine-tuning can be achieved, but the existing stamping dies are often fixed stamping, that is, the stamping dies are fixed on the machine tool and then stamped. Therefore, the existing stamping dies cannot meet the stamping requirements of alloy resistance raw materials. If the alloy resistor is stamped, when there is a certain difference in the resistivity of the raw material of the alloy resistor, it is necessary to change the cutting depth of the stamping die or to repair the stamped sheet. On the one hand, there will be inconvenience in operation and increase manufacturing cost.

Contents of the invention

The invention overcomes the deficiencies of the prior art and provides an adjustable resistance stamping die and its adjustment method to solve the problems existing in the prior art.

In order to achieve the above purpose, the technical solution adopted by the present invention is: an adjustable resistance stamping die, comprising

a mold base mounted on an external machine tool;

An upper platen, the upper platen is provided with a movable knife seat, the knife seat is provided with a punch, and the punch protrudes from the surface of the upper platen;

The lower pressing plate is provided with punching grooves, and the punching grooves correspond to the positions of the punches.

In a preferred embodiment of the present invention, an opening is provided at the bottom of the upper platen, and the diameter of the opening is larger than the moving stroke of the punch.

In a preferred embodiment of the present invention, a driving assembly is arranged inside the upper pressing plate, and the driving assembly drives the knife seat.

In a preferred embodiment of the present invention, the driving assembly includes a driving motor and a lead screw located at the end of the rotating shaft of the drive motor, and the tool seat cooperates with the lead screw and moves along the length direction of the lead screw.

In a preferred embodiment of the present invention, a cavity is provided in the upper platen, and a buffer member for buffering the driving motor is provided in the cavity.

In a preferred embodiment of the present invention, the buffer member includes buffer cotton and a buffer spring, the buffer cotton is filled in the cavity, the buffer spring is arranged on the side of the drive motor, and is connected to the inside of the tool holder. conflict.

In a preferred embodiment of the present invention, a power supply is provided in the cavity, and the power supply is electrically connected to the driving motor.

In a preferred embodiment of the present invention, a control system is also included, and the control system controls the driving of the tool seat.

In a preferred embodiment of the present invention, a return spring is provided between the upper pressing plate and the lower pressing plate.

The invention also discloses an adjustment method, comprising the following steps:

S1. Transfer the resistance to be punched to the lower platen to be punched;

S2. The control system starts the power supply and the drive motor, and the drive motor drives the screw to rotate to adjust the position of the tool holder;

S3. After the position of the tool seat is determined, the external machine tool drives the upper platen to move through the mold frame, and the punch head performs punching processing on the resistance to be punched.

The present invention solves the defect existing in the background technology, and the present invention has the following beneficial effects:

(1) The present invention uses a drive assembly to drive the knife seat, thereby changing the position of the punch on the knife seat. When it is necessary to perform stamping operations on different knife depth positions of the alloy resistance, the position of the knife seat is adjusted, and then the stamping die is adjusted. The deep position of the knife realizes the stamping operation of the alloy resistor without moving the alloy resistor, ensuring stable stamping of the alloy resistor, effectively reducing costs and making the operation more convenient;

(2) The existence of the buffer member can effectively buffer the driving motor, avoid the damage of the driving motor due to vibration during the stamping process, and ensure the stable position adjustment of the tool holder;

(3) The existence of the control system can precisely adjust the position of the tool seat through external control, without manual adjustment of the mold, making the operation more convenient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described;

Fig. 1 is the overall structure schematic diagram of the preferred embodiment of the present invention;

Fig. 2 is the front view of preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the upper platen in the preferred embodiment of the present invention;

Fig. 4 is a schematic structural view of the lower platen in a preferred embodiment of the present invention;

Fig. 5 is the flowchart of preferred embodiment of the present invention;

In the figure: 10, mold base; 20, upper pressing plate; 21, knife seat; 22, punch; 23, opening; 24, cavity; 30, lower pressing plate; 31, stamping groove; 40, driving assembly; 41, driving Motor; 42, leading screw; 50, buffer member; 51, buffer cotton; 52, buffer spring; 60, power supply; 70, return spring; 100, resistance to be punched.

Detailed ways

A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention, but are only for the purpose of distinguishing the following The components or operations described by the same technical terms are only used, but should not be understood as indicating or implying their relative importance or implying the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

As shown in Figure 1 and Figure 2, this embodiment provides an adjustable resistance stamping die, including a mold base 10, an upper platen 20 and a lower platen 30; the mold base 10 is installed on an external machine tool, and the external machine tool passes through the mold base 10 The upper pressing plate 20 is driven to press down to realize the stamping operation of the resistor 100 to be punched.

As shown in Figure 3, the upper platen 20 is provided with a movable knife seat 21, the knife seat 21 is provided with a punch 22, the punch 22 protrudes from the surface of the upper platen 20, and the movable knife seat 21 can align the position of the punch To adjust, by changing the position of the punch 22, the punching operation is performed at different knife depth positions of the punching resistor 100 .

Specifically, the upper platen 20 is provided with a drive assembly 40, the drive assembly 40 drives the tool holder 21, the drive assembly 40 includes a drive motor 41 and a lead screw 42 positioned at the end of the drive motor 41 shaft, the tool holder 21 cooperates with the lead screw 42 and Moving along the length direction of the lead screw 42, the drive motor 41 adopts a servo motor to drive the lead screw 42 to rotate, thereby driving the tool holder 21, and adjusting the position of the tool holder 21. The servo motor and the ball screw 42 can be used for precise adjustment. The position of the knife seat 21 has high adjustment accuracy.

Further, in the present embodiment, an opening 23 is provided at the bottom of the upper pressing plate 20, and the diameter of the opening 23 is larger than the moving stroke of the punch 22, so as to ensure that the knife holder 21 moves stably in the upper pressing plate 20, and avoid the position of the opening 23 for punching from being in contact with the punch. 22 conflicts arise.

In this embodiment, a cavity 24 is provided in the upper platen 20, and a buffer member 50 and a power supply 60 for buffering the drive motor 41 are arranged in the cavity 24. The buffer member 50 includes a buffer cotton 51 and a buffer spring 52. The buffer cotton 51 is filled in the cavity 24, the buffer spring 52 is arranged on the side of the driving motor 41, and conflicts with the inside of the tool holder 21, the power supply 60 is electrically connected to the driving motor 41, and during the actual stamping operation, the driving motor 41 will be affected by the stamping operation. The vibration caused by the shock, and the existence of the buffer cotton 51 and the buffer spring 52 can effectively buffer the drive motor 41, avoid the drive motor 41 from being damaged due to vibration during the stamping process, and ensure the stable position adjustment of the tool holder 21, and the power supply The power supply 60 can supply power to the driving motor 41 without using an external power supply for power supply processing, thus realizing the simplification of the mold structure.

As shown in Figure 4, the lower platen 30 is provided with a stamping groove 31, the stamping groove 31 corresponds to the position of the punch 22, and the resistor 100 to be punched is placed on the lower platen 30, and under the action of an external machine tool, the mold frame 10 is aligned with the upper platen 20. Drive to make the punch 22 on the upper platen 20 punch the resistance 100 to be punched on the lower platen 30, and the existence of the stamping groove 31 can ensure that the punch 22 can effectively punch the resistance 100 to be punched, ensuring the accuracy of punching. precision.

In this embodiment, a control system is also included, and the control system controls the drive of the knife seat 21. In the prior art, an external control computer is usually used to control the power supply 60 and the drive motor 41, without manual adjustment of the mold, so that the operation more convenient.

Further, a return spring 70 is arranged between the upper press plate 20 and the lower press plate 30. After the stamping operation is completed, the return spring 70 can automatically reset the upper press plate 20, and the return spring 70 can also play a shock absorbing effect to avoid During the stamping process, the upper platen 20 vibrates too much.

In the specific use of the mold of this embodiment, the mold frame 10 is fixed on the external machine tool, the resistance 100 to be punched is placed on the lower platen 30, corresponding to the position of the stamping groove 31 on the lower platen 30, and the rear tool seat 21 is driven by the driving assembly 40. Under the action, it moves to the predetermined stamping position. At this time, the punch 22 is at the predetermined stamping position. The external machine tool drives the upper platen 20 to move through the mold frame 10, and performs stamping operation on the resistance 100 to be punched. After the stamping is completed, the external machine tool drives the die The frame 10 resets, and the upper pressing plate 20 automatically resets under the action of the return spring 70, and the waste materials produced by stamping are automatically discharged from the stamping groove 31.

As shown in Figure 5, this embodiment also discloses an adjustment method, which includes the following steps:

S1. Transfer the resistance 100 to be punched to the lower platen 30 to be punched. At this time, the resistance 100 to be punched corresponds to the position of the punching groove 31, and the punch 22 is located above the punching groove 31, and the two are set correspondingly;

S2. The control system starts the power supply 60 and the drive motor 41, and the drive motor 41 drives the screw to rotate to adjust the position of the knife seat 21. During the movement of the knife seat 21, the punch 22 moves accordingly to change the resistance of the punching resistance 100. Stamping position, and the punch 22 is always corresponding to the position of the stamping groove 31 during the movement process, so as to ensure that the punch 22 can smoothly rush into the stamping groove 31, and realize the stamping process of the resistance 100 to be punched;

S3. After the position of the tool holder 21 is determined, the external machine tool drives the upper platen 20 to move through the formwork 10, and the punch 22 performs stamping processing on the resistance 100 to be punched. After the stamping is completed, the formwork 10 is reset under the action of the external machine tool, and the upper platen 20 Reset automatically under the action of back-moving spring 70 .

In this embodiment, according to alloy resistance machining, there will be cases where the center is thicker and the sides are thinner. The mold design fully considers the material processing characteristics, and optimizes the mold to a single-row moving knife depth, which conforms to the material characteristics and improves the yield of stamping parts.

In a word, the present invention adopts the drive assembly 40 to drive the knife seat 21, thereby changing the position of the punch 22 on the knife seat 21. When it is necessary to perform stamping operations on different knife depth positions of the alloy resistance, the position of the knife seat is adjusted to further adjust The knife depth position of the stamping die realizes the stamping operation of the alloy resistor without moving the alloy resistor, ensuring stable stamping of the alloy resistor, effectively reducing costs and making the operation more convenient.

While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is to say, the methods, systems or devices discussed above are all examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different from that described, and/or various stages may be added, omitted, and/or combined. Also, features described with respect to certain configurations may be combined in various other configurations. Different aspects and elements of configuration can be combined in a similar fashion. Also, many elements are examples only and do not limit the scope of the present disclosure or claims as technology develops.

Specific details are given in the description to provide a thorough understanding of example configurations including implementations. However, configurations may be practiced without these specific details. For example, well-known circuits, procedures, algorithms, structures and techniques have been shown without unnecessary detail in order to avoid obscuring the configuration. This description provides example configurations only, and does not limit the scope, applicability, or configurations of the claims. Rather, the preceding description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

Also, although each operation may describe operations as a sequential process, many operations may be performed in parallel or simultaneously. Additionally, the order of operations can be rearranged. A process may have other steps. Furthermore, examples of methods may be implemented by hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments for performing the necessary tasks may be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor to perform the described tasks .

In conclusion, it is intended that the foregoing detailed description be regarded as illustrative rather than restrictive, and that it be understood that the claims, including all equivalents, are intended to define the spirit and scope of the invention. The above embodiments should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, skilled persons can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims (10)

1. An adjustable resistance stamping die, which is characterized by comprising

The die carrier (10), the said die carrier (10) is installed on external machine tool;

an upper pressing plate (20), wherein a movable tool apron (21) is arranged in the upper pressing plate (20), a punch (22) is arranged on the tool apron (21), and the punch (22) protrudes out of the surface of the upper pressing plate (20);

and the lower pressing plate (30), wherein a punching groove (31) is formed in the lower pressing plate (30), and the punching groove (31) corresponds to the punch (22) in position.

2. An adjustable resistor stamping die according to claim 1, characterized in that an opening (23) is provided at the bottom of the upper platen (20), the aperture of the opening (23) being larger than the travel of the punch (22).

3. An adjustable resistor stamping die as claimed in claim 1, characterized in that a driving assembly (40) is arranged in the upper pressing plate (20), and the driving assembly (40) drives the tool holder (21).

4. An adjustable resistor stamping die according to claim 3, characterized in that the driving assembly (40) comprises a driving motor (41) and a screw (42) positioned at the rotating shaft end of the driving motor (41), and the tool holder (21) is matched with the screw (42) and moves along the length direction of the screw (42).

5. An adjustable resistor stamping die as claimed in claim 4, wherein a cavity (24) is provided in the upper platen (20), and a buffer member (50) for buffering the driving motor (41) is provided in the cavity (24).

6. The adjustable resistor stamping die according to claim 5, wherein the buffer member (50) comprises buffer cotton (51) and a buffer spring (52), the buffer cotton (51) is filled in the cavity (24), and the buffer spring (52) is arranged on the side surface of the driving motor (41) and is abutted against the inside of the tool apron (21).

7. An adjustable resistor stamping die as claimed in claim 5, characterized in that a power supply (60) is arranged in the cavity (24), the power supply (60) being electrically connected to the drive motor (41).

8. An adjustable resistance stamping die as claimed in claim 1, further comprising a control system controlling the drive of the tool holder (21).

9. An adjustable resistor stamping die according to claim 1, characterized in that a return spring (70) is arranged between the upper platen (20) and the lower platen (30).

10. An adjusting method applied to the adjustable resistance stamping die as claimed in any one of claims 1 to 9, comprising the steps of:

s1, transferring a resistor (100) to be punched to a lower pressing plate (30) for punching treatment;

s2, starting a power supply (60) and a driving motor (41) by the control system, driving a screw rod to rotate by the driving motor (41), and adjusting the position of the tool apron (21);

s3, after the position of the tool apron (21) is determined, an external machine tool drives the upper pressing plate (20) to move through the die carrier (10), and the punch (22) performs punching processing on the resistor (100) to be punched.