Surge protection device

Abstract

This invention discloses an impact overload protection device, connected to the output end of an external cylinder, comprising: an impact setting module and a pressure relief module; the impact setting module is connected to the pressure relief module, and is used to set the impact force; the pressure relief module is connected to an external pressure connector, and is used to unload excess impact force. This invention has a simple structure and provides rapid impact protection response.

Description

Technical Field

[0001] This invention relates to the field of workpiece stamping technology, and in particular to a punching overload protection device. Background Technology

[0002] Pneumatic cylinders are widely used as power sources for pressing or stamping workpieces. They are simple to control, reliable, fast-acting, and efficient. However, because they are pneumatically driven and controlled by solenoid valves, controlling the pressure applied to the workpiece is often difficult. The solenoid valve's action time is greater than 20ms, and the cylinder push rod speed is 1-2m / s. When electronic detection is used to detect excessive pressure on the workpiece, and the solenoid valve stops the cylinder, inertia prevents immediate stopping, and the force on the workpiece is not immediately unloaded. This can easily lead to excessive stress on the workpiece, causing it to fail or be damaged. Furthermore, due to deviations in the workpiece's inherent dimensions or changes in specifications, the point of force application is not fixed throughout the cylinder's stroke, making impact overload difficult to avoid. This can also lead to workpiece overload. Especially when the workpiece is a non-elastic material, the cylinder stopping delay and inertial impact can easily cause quality problems and workpiece damage. Summary of the Invention

[0003] According to an embodiment of the present invention, an impact overload protection device is provided, which is connected to the output end of an external cylinder and includes: an impact setting module and a pressure relief module;

[0004] The impact setting module is connected to the pressure relief module, and the impact setting module is used to set the impact force.

[0005] The pressure relief module is connected to an external pressure connector, and the pressure relief module unloads excess impact force.

[0006] Furthermore, the impact setting module includes: a screw, an impact adjustment assembly, and a locking element;

[0007] One end of the screw is connected to the cylinder, and the other end of the screw is connected to the pressure relief module;

[0008] The impact adjustment component is sleeved on the screw, and the impact adjustment component adjusts the required impact force.

[0009] The locking force adjustment assembly is located on the screw.

[0010] Furthermore, the impact adjustment assembly includes: several disc springs, an adjustment cylinder, and an adjustment ring;

[0011] Several disc springs are stacked inside the adjusting cylinder;

[0012] The adjusting ring is fitted onto the adjusting cylinder;

[0013] The other end of the screw passes through the disc spring and the adjusting cylinder in sequence, and is connected to the pressure relief module.

[0014] Furthermore, the outer wall of the adjusting cylinder is marked with graduations.

[0015] Furthermore, the impact adjustment assembly also includes a disc spring baffle, which is located at the bottom of the adjustment cylinder and in contact with the disc spring.

[0016] Furthermore, the pressure relief module includes: an outer cylinder, an inner cylinder, and a piston;

[0017] One end of the outer cylinder is connected to the adjusting cylinder;

[0018] One end of the piston abuts against the screw, and the other end of the piston is connected to one end of the inner cylinder;

[0019] One part of the inner cylinder is located inside the outer cylinder, and the other part of the inner cylinder is connected to the crimp connector.

[0020] Furthermore, the inner cylinder has several holes evenly distributed along its circumference, and each hole contains a wedge-shaped slider.

[0021] Furthermore, the inner wall of the outer cylinder is provided with an annular groove.

[0022] Furthermore, the longitudinal section of the annular groove is wedge-shaped.

[0023] Furthermore, the piston is a hollow piston, and a reset element is provided inside the piston for resetting the piston.

[0024] The impact overload protection device according to embodiments of the present invention has a simple structure and a rapid impact protection response.

[0025] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0026] Figure 1 This is a front view of the impact overload protection device according to an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the impact overload protection device according to an embodiment of the present invention;

[0028] Figure 3 This is an exploded view of an impact overload protection device according to an embodiment of the present invention. Implementation

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0030] First, combine Figures 1-3The impact overload protection device according to an embodiment of the present invention is connected to the output end of an external cylinder to press the enameled wire terminal into a plastic workpiece, and has a wide range of applications.

[0031] like Figure 1 As shown, the impact overload protection device of this embodiment of the invention has an impact setting module 1 and a pressure relief module 2.

[0032] Specifically, such as Figure 1 As shown, the impact setting module 1 is connected to the pressure relief module 2. The impact setting module 1 is used to set the impact force; the pressure relief module 2 is connected to the external pressure connector 3. The pressure relief module 2 is used to unload excess impact force; the terminal is pressed into the plastic workpiece through the pressure connector 3. The structure is simple and reliable.

[0033] Furthermore, such as Figure 2 As shown, the impact setting module 1 includes: a screw 11, an impact adjustment component 12, and a locking component 13; one end of the screw 11 is connected to the cylinder, and the other end of the screw 11 is connected to the pressure relief module 2; the impact adjustment component 12 is sleeved on the screw 11, and the impact adjustment component 12 adjusts the required impact force; the locking component 13 locks the impact adjustment component 12 on the screw 11.

[0034] Furthermore, such as Figure 2 , 3 As shown, the impact adjustment assembly 12 includes: several disc springs 121, an adjustment cylinder 122, and an adjustment ring 123; the disc springs 121 are stacked inside the adjustment cylinder 122, and the disc springs 121 are used to set the impact value; the adjustment ring 123 is sleeved on the adjustment cylinder 122; the other end of the screw 11 passes through the disc springs 121 and the adjustment cylinder 122 in sequence, and is connected to the pressure relief module 2. The outer wall of the adjustment cylinder 122 is provided with a scale. By rotating the adjustment ring 123 and then checking the scale on the adjustment cylinder 122, the impact value can be accurately set.

[0035] Furthermore, such as Figure 2 , 3 As shown, the impact adjustment assembly 12 also includes a disc spring baffle 124, which is located at the bottom of the adjustment cylinder 122 and is in contact with the disc spring 121.

[0036] Furthermore, such as Figure 2 , 3 As shown, the pressure relief module 2 includes an outer cylinder 21, an inner cylinder 22, and a piston 23; one end of the outer cylinder 21 is connected to the adjusting cylinder 122 by a thread; one end of the piston 23 abuts against the screw 11, and the other end of the piston 23 is connected to one end of the inner cylinder 22; a part of the inner cylinder 22 is located inside the outer cylinder 21, and the other part of the inner cylinder 22 is connected to the pressure connector 3. The inner cylinder 22 drives the pressure connector 3 to press down, thereby realizing terminal crimping.

[0037] Furthermore, such as Figure 2 ,3 As shown, the inner cylinder 22 has several holes 221 evenly distributed along its circumference, and each hole 221 contains a wedge-shaped slider 222. The inner wall of the outer cylinder 21 has an annular groove 211 with a wedge-shaped longitudinal section. In this embodiment, the inner cylinder 22 has four holes 221. During pressing, when the impact force does not exceed a set value (i.e., in the non-protected state), the wedge-shaped slider 222 in the hole 221 partially extends into the annular groove 211, locking the inner cylinder 22 and the outer cylinder 21 and preventing relative sliding between them. When the impact force exceeds the set value (i.e., in the protected state), the wedge-shaped slider 222 in the annular groove 211 slides out, allowing relative sliding between the inner cylinder 22 and the outer cylinder 21, thus unlocking them. The impact overload protection device in this embodiment can immediately unload the impact force when an impact overload occurs, with a fast response speed and no delay.

[0038] Furthermore, such as Figure 2 , 3 As shown, piston 23 is a hollow piston 23, and a reset member 231 is provided inside piston 23. The reset member 231 is used to reset piston 23. In this embodiment, the reset member 231 is a spring.

[0039] In use, the preset impact force is set by turning the adjusting ring 123. The cylinder drives the screw 11 to press down, and the screw 11 then drives the piston 23 to move. In the unprotected state, the wedge slider 222, under the action of the piston 23, engages and locks the outer cylinder 21 and the inner cylinder 22, preventing the inner cylinder 22 and the outer cylinder 21 from sliding relative to each other, thus ensuring that the cylinder pressure is fully transmitted to the workpiece. When an impact force overload occurs, and the cylinder's downward impact force exceeds the preset value of the disc spring 121, the mounting screw 11 presses down the piston 23. The wedge slider 222 moves inward under the action of the inclined surface of the annular groove 211 on the inner wall of the outer cylinder 21, unlocking the outer cylinder 21 and the inner cylinder 22. The inner cylinder 22 retracts upward, immediately unloading the impact force on the workpiece and protecting the pressed workpiece. When the cylinder punch returns, the piston 23 resets under the action of the spring, and the outer cylinder 21 and the inner cylinder 22 are repositioned and locked. The impact force overload protection device resets and is ready for the next overload protection.

[0040] Above, refer to Figures 1-3 An impact overload protection device according to an embodiment of the present invention is described. It has a simple structure and a rapid impact protection response.

[0041] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An impact overload protection device, connected to the output end of an external cylinder, characterized in that, The utility model relates to a punch force setting device, comprising: a punch force setting module and a relief force module; The punch force setting module is connected with the relief force module, and the punch force setting module is used for setting punch force; The relief force module is connected with an external compression joint, and the relief force module unloads excessive punch force; The punch force setting module comprises a screw rod, a punch force adjusting assembly and a locking piece; One end of the screw rod is connected with the air cylinder, and the other end of the screw rod is connected with the relief force module; The punch force adjusting assembly is sleeved on the screw rod, and the punch force adjusting assembly adjusts required punch force; The locking piece locks the punch force adjusting assembly on the screw rod; The punch force adjusting assembly comprises a plurality of disc springs, an adjusting barrel and an adjusting ring; an outer wall of the adjusting barrel is provided with a scale; The plurality of disc springs are stacked in the adjusting barrel; The adjusting ring is sleeved on the adjusting barrel; The other end of the screw rod sequentially penetrates the disc springs, the adjusting barrel and the relief force module; The relief force module comprises an outer cylinder, an inner cylinder and a piston; One end of the outer cylinder is connected with the adjusting barrel; One end of the piston is abutted with the screw rod, and the other end of the piston is connected with one end of the inner cylinder; Part of the inner cylinder is arranged inside the outer cylinder, and the other part of the inner cylinder is connected with the compression joint; A plurality of holes are formed in the inner cylinder, and the plurality of holes are uniformly distributed along the circumferential surface of the inner cylinder; each hole is provided with an inclined wedge sliding block; The piston is a hollow piston, and a reset piece is arranged in the piston; the reset piece is used for resetting the piston.

2. The surge protection device of claim 1, wherein The punch force adjusting assembly further comprises a disc spring stopper, which is arranged at the bottom of the adjusting barrel and in contact with the disc spring.

3. The surge protection device of claim 1, wherein the surge protection device is configured to be mounted on a printed circuit board. An annular groove is formed in the inner wall of the outer cylinder.

4. The surge protection device of claim 3, wherein the surge protection device is configured to be mounted on a printed circuit board. The longitudinal section of the annular groove is wedge-shaped.

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