Wedge resetting mechanism and wedge

Abstract

The utility model relates to the technical field of stamping dies, and discloses a tapered wedge reset mechanism, which comprises a guide pin, a first spring, a second spring and a gasket, the guide pin is sequentially provided with a connecting part, a first guide part, a second guide part and a mounting part along the length direction of the guide pin, the mounting part is provided with two planes which are oppositely arranged in parallel, and the planes provide acting points during mounting. And a bench worker can conveniently use a wrench and other tools to disassemble and assemble. The installation portion is arranged at the end away from the first guide portion, so that the size of the installation portion can be designed to be small, cost is reduced, the problem that the first spring is scratched due to the fact that the installation portion is arranged on the first guide portion is avoided, and the reset mechanism is not prone to being damaged. The embodiment of the utility model provides a wedge adopting the wedge reset mechanism, a guide pin can be conveniently installed on a sliding block seat, a first spring and a second spring can be stably stretched out and drawn back and prevented from shaking, and the service life of the first spring, the service life of the second spring and the service life of a gasket are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a wedge reset mechanism and a wedge. Background Technology

[0002] In the cold stamping die manufacturing process, standard wedges are often used for trimming and punching dies. For long-stroke wedges, a reset mechanism is used to return the slider to its original position after it reaches the working position. The reset mechanism inside the slider includes two springs and a spring guide pin. The two springs are separated by washers and have different diameters. The larger diameter spring is the heavy-duty spring, and the smaller diameter spring is the light-duty spring. After the light-duty spring is fully compressed, the heavy-duty spring begins to compress. The heavy-duty spring is used for unloading, and after unloading, the light-duty spring resets the slider. The dual-spring structure can simultaneously meet the requirements of long stroke and high final pressure. The guide pin is threaded to the slider. During installation, the connection is achieved by rotating the guide pin. However, existing guide pins are cylindrical, which is not conducive to fitter work during installation, is prone to slippage, and is inconvenient to install.

[0003] The prior art (CN201988626U) discloses a parallel double-spring wedge mechanism for hoisting wedges. The wedge mechanism mainly consists of a drive block, a slider, and a slider seat. The slider is mounted on the slider seat, and a spring mechanism is inserted into the slider mounting hole. Its key feature is that the spring mechanism uses two parallel return springs, which are fixedly connected to a baffle and a spring limiting mechanism respectively via guide pins. The spring limiting mechanism is fixed to the slider seat and installed within the slider mounting hole. This patent discloses that both the traditional wedge and the guide pin used are composed of two cylinders with different diameters connected together, which is inconvenient for fitter work during installation, prone to slippage, and difficult to install. Utility Model Content

[0004] The purpose of this utility model is to provide a wedge reset mechanism and wedge that are easy to install and not easily damaged.

[0005] To achieve the above objectives, this utility model provides a wedge resetting mechanism, including a guide pin, a first spring, a second spring, and a washer. The guide pin, from its first end along its length toward its second end, includes a connecting portion, a first guide portion, a second guide portion, and a mounting portion in sequence. The outer wall of the connecting portion is threaded. The diameter of the first guide portion is larger than the diameter of the second guide portion. The side of the mounting portion has two parallel and opposite planes. The outer diameter of the first spring is larger than the outer diameter of the second spring. The first spring is fitted onto the first guide portion, the second spring is fitted onto the second guide portion, and the washer is fitted onto the second guide portion and located between the first spring and the second spring.

[0006] As a preferred embodiment, the side of the mounting part is formed by a first arc surface, a first plane, a second arc surface, and a second plane. The diameters of the first arc surface and the second arc surface are the same as the diameter of the second guide part, and the first plane and the second plane are parallel and opposite to each other.

[0007] As a preferred embodiment, the length of the second guide portion is greater than the length of the first guide portion, and the length of the first guide portion is less than the length of the first spring.

[0008] As a preferred embodiment, the first guide portion includes a guide section and a transition section connected together. The guide section is connected to the connecting portion, and the transition section is connected to the second guide portion. The guide section is cylindrical, and the transition section is frustum-shaped. The diameter of the major diameter end face of the transition section is equal to the diameter of the guide section, and the diameter of the minor diameter end face of the transition section is equal to the diameter of the second guide portion.

[0009] As a preferred embodiment, the end face of the mounting portion away from the second guide portion is an arc surface.

[0010] As a preferred embodiment, the washer includes a first washer portion and a second washer portion connected to each other. The diameter of the first washer portion is larger than the diameter of the second washer portion, making the washer a T-shaped structure. The diameter of the second washer portion is larger than the outer diameter of the second spring and smaller than the inner diameter of the first spring. The second washer portion is inserted into the first spring.

[0011] As a preferred embodiment, the height of the second pad is greater than the height of the first pad.

[0012] As a preferred embodiment, the diameter of the first pad is smaller than the outer diameter of the first spring.

[0013] As a preferred embodiment, the end of the second pad that is away from the first pad has a tapered structure.

[0014] This utility model also provides a wedge, including a slider, a slider seat and the above-mentioned wedge reset mechanism. The slider seat is provided with a connecting hole, the slider is provided with a mounting hole, the connecting part is threadedly connected to the connecting hole, the first spring, the second spring and the washer are located in the mounting hole, and the guide pin is inserted into the mounting hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The guide pin of this invention comprises, along its length, a connecting portion, a first guide portion, a second guide portion, and a mounting portion. The mounting portion has two parallel, oppositely arranged planes. During installation, these planes provide a point of leverage, facilitating assembly and disassembly by a fitter using tools such as wrenches. Furthermore, the mounting portion is located at the end furthest from the first guide portion, allowing for a smaller design and reduced costs. It also avoids the problem of damaging the first spring if the mounting portion were located on the first guide portion, thus preventing damage to the reset mechanism of this invention. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the wedge according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the guide pin structure according to an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the gasket structure according to an embodiment of the present invention.

[0020] In the figure, 1-guide pin; 101-connecting part; 1011-thread; 102-first guide part; 1021-guide section; 1022-transition section; 103-second guide part; 104-mounting part; 2-first spring; 3-second spring; 4-washer; 401-first pad; 402-second pad; 5-slider; 501-mounting hole; 6-slider seat; 601-connecting hole. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0022] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, a preferred embodiment of the wedge resetting mechanism of this utility model includes a guide pin 1, a first spring 2, a second spring 3, and a washer 4. The guide pin 1, from its first end toward its second end along its length, includes a connecting portion 101, a first guide portion 102, a second guide portion 103, and a mounting portion 104. The outer wall of the connecting portion 101 is provided with a thread 1011. The diameter of the first guide portion 102 is larger than the diameter of the second guide portion 103. The side of the mounting portion 104 has two parallel and opposite planes. The outer diameter of the first spring 2 is larger than the outer diameter of the second spring 3. The first spring 2 is fitted onto the first guide portion 102, and the second spring 3 is fitted onto the second guide portion 103. The washer 4 is fitted onto the second guide portion 103 and located between the first spring 2 and the second spring 3. In this embodiment, the guide pin 1, along its length, consists of a connecting portion 101, a first guide portion 102, a second guide portion 103, and a mounting portion 104. The mounting portion 104 has two parallel and opposite planes, which provide a point of force during installation, facilitating disassembly and assembly by a fitter using tools such as wrenches. Furthermore, in this embodiment, the mounting part 104 is located at the end away from the first guide part 102, which allows the size of the mounting part 104 to be designed to be smaller, reducing costs. It also avoids the problem of scratching the first spring 2 caused by placing the mounting part 104 in the first guide part 102, making the reset mechanism of this embodiment less prone to damage.

[0027] Optionally, the side of the mounting portion 104 is formed by a first arc surface, a first plane, a second arc surface, and a second plane. The diameters of the first and second arc surfaces are the same as the diameter of the second guide portion 103, and the first and second planes are parallel and opposite to each other. It should be noted that the cross-section of the mounting portion 104 can also be a regular hexagon or a regular 2n-gon structure.

[0028] Furthermore, in this embodiment, the length of the second guide portion 103 is greater than the length of the first guide portion 102, and the length of the first guide portion 102 is less than the length of the first spring 2. The longer length of the second guide portion 103 allows the second spring 3 to be fully compressed. The first spring 2 is longer than the first guide portion 102. After the second spring 3 is compressed, the first spring 2 is pushed to compress through the shim. If the first guide portion 102 is too long, the first spring 2 may not be fully compressed, affecting the magnitude of the restoring force.

[0029] Furthermore, the first guide portion 102 in this embodiment includes a guide section 1021 and a transition section 1022 connected to each other. The guide section 1021 is connected to the connecting portion 101, and the transition section 1022 is connected to the second guide portion 103. The guide section 1021 is cylindrical, and the transition section 1022 is frustum-shaped. The diameter of the large-diameter end face of the transition section 1022 is equal to the diameter of the guide section 1021, and the diameter of the small-diameter end face of the transition section 1022 is equal to the diameter of the second guide portion 103. The transition section 1022 prevents damage to the first spring 2 and improves the strength of the guide pin 1.

[0030] In addition, the end face of the mounting part 104 away from the second guide part 103 is a curved surface. This is to prevent scratching of personnel and to prevent damage to the second spring 3.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, this embodiment provides a further explanation of the washer 4.

[0033] In this embodiment, the washer 4 includes a first washer portion 401 and a second washer portion 402 connected to each other. The diameter of the first washer portion 401 is larger than the diameter of the second washer portion 402, making the washer 4 a T-shaped structure. The diameter of the second washer portion 402 is larger than the outer diameter of the second spring 3, and smaller than the inner diameter of the first spring 2. The second washer portion 402 is inserted into the first spring 2. The T-shaped structure of the washer 4 and the insertion of the second washer portion 402 into the first spring 2 also serve as a guide for the first spring 2, and can push the first spring 2 to extend and retract smoothly, reducing the swaying of the first spring 2, thereby preventing the washer 4 from breaking due to impact deformation.

[0034] In this embodiment, the height of the second pad 402 is greater than the height of the first pad 401 to ensure the guiding function. The height of the second pad 402 in this embodiment is more than five times the height of the first pad 401.

[0035] Furthermore, in this embodiment, the diameter of the first pad 401 is smaller than the outer diameter of the first spring 2. This prevents the first pad 401 from hitting the wall of the mounting hole 501 of the slider 5 during operation, thereby preventing the washer 4 from affecting the extension and retraction of the first spring 2 and the second spring 3, and making the reset mechanism move more smoothly.

[0036] Furthermore, in this embodiment, the end of the second pad 402 away from the first pad 401 has a tapered structure. This makes it easier for the second pad 402 to be inserted into the first spring 2 and prevents the second pad 402 from scratching the first spring 2.

[0037] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0038] Example 3

[0039] like Figure 1 As shown, a preferred embodiment of the present invention provides a wedge comprising a slider 5, a slider seat 6, and a wedge reset mechanism as described in Embodiment 1 or Embodiment 2. The slider seat 6 has a connecting hole 601, and the slider 5 has a mounting hole 501. The connecting part 101 is threadedly connected to the connecting hole 601. The first spring 2, the second spring 3, and the washer 4 are located within the mounting hole 501, and the guide pin 1 is inserted into the mounting hole 501. The reset mechanism used in this embodiment facilitates the installation of the guide pin 1 on the slider seat 6 and enables the first spring 2 and the second spring 3 to extend and retract smoothly, preventing wobbling and improving the service life of the first spring 2, the second spring 3, and the washer 4.

[0040] The wedge reset mechanism in this embodiment is as described in Embodiment 1 and Embodiment 2, and will not be repeated here.

[0041] In summary, this utility model embodiment provides a wedge reset mechanism, in which the guide pin 1, along its length, comprises a connecting part 101, a first guide part 102, a second guide part 103, and a mounting part 104. The mounting part 104 has two parallel and opposite planes, which provide a point of force during installation, facilitating assembly and disassembly by a fitter using tools such as wrenches. Furthermore, the mounting part 104 is located at the end furthest from the first guide part 102, allowing for a smaller size and reduced cost. It also avoids the problem of damaging the first spring 2 caused by placing the mounting part 104 on the first guide part 102, making the reset mechanism less prone to damage. This utility model embodiment also provides a wedge using the above-described wedge reset mechanism, facilitating the installation of the guide pin 1 on the slider seat 6, and enabling the smooth extension and retraction of the first spring 2 and the second spring 3, preventing wobbling and improving the service life of the first spring 2, the second spring 3, and the washer 4.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A wedge resetting mechanism, characterized in that, The device includes a guide pin (1), a first spring (2), a second spring (3), and a washer (4). The guide pin (1) includes a connecting part (101), a first guide part (102), a second guide part (103), and a mounting part (104) in sequence from its first end to its second end along its length. The outer wall of the connecting part (101) is provided with a thread (1011). The diameter of the first guide part (102) is larger than the diameter of the second guide part (103). The side of the mounting part (104) has two parallel and opposite planes. The outer diameter of the first spring (2) is larger than the outer diameter of the second spring (3). The first spring (2) is fitted on the first guide part (102), and the second spring (3) is fitted on the second guide part (103). The washer (4) is fitted on the second guide part (103) and located between the first spring (2) and the second spring (3).

2. The wedge reset mechanism according to claim 1, characterized in that, The side of the mounting part (104) is surrounded by a first arc surface, a first plane, a second arc surface and a second plane. The diameters of the first arc surface and the second arc surface are the same as the diameter of the second guide part (103). The first plane and the second plane are parallel and opposite to each other.

3. The wedge reset mechanism according to claim 1, characterized in that, The length of the second guide portion (103) is greater than the length of the first guide portion (102), and the length of the first guide portion (102) is less than the length of the first spring (2).

4. The wedge reset mechanism according to claim 1, characterized in that, The first guide section (102) includes a guide section (1021) and a transition section (1022) connected to each other. The guide section (1021) is connected to the connecting section (101), and the transition section (1022) is connected to the second guide section (103). The guide section (1021) is cylindrical, and the transition section (1022) is frustum-shaped. The diameter of the major diameter end face of the transition section (1022) is equal to the diameter of the guide section (1021), and the diameter of the minor diameter end face of the transition section (1022) is equal to the diameter of the second guide section (103).

5. The wedge resetting mechanism according to claim 1, characterized in that, The end face of the mounting part (104) away from the second guide part (103) is an arc surface.

6. The wedge reset mechanism according to claim 1, characterized in that, The washer (4) includes a first washer portion (401) and a second washer portion (402) connected to each other. The diameter of the first washer portion (401) is larger than the diameter of the second washer portion (402), making the washer (4) a T-shaped structure. The diameter of the second washer portion (402) is larger than the outer diameter of the second spring (3), and the diameter of the second washer portion (402) is smaller than the inner diameter of the first spring (2). The second washer portion (402) is inserted into the first spring (2).

7. The wedge reset mechanism according to claim 6, characterized in that, The height of the second pad (402) is greater than the height of the first pad (401).

8. The wedge reset mechanism according to claim 6, characterized in that, The diameter of the first pad (401) is smaller than the outer diameter of the first spring (2).

9. The wedge reset mechanism according to claim 6, characterized in that, The end of the second pad (402) away from the first pad (401) has a tapered structure.

10. A wedge, characterized in that, The device includes a slider (5), a slider seat (6), and a wedge reset mechanism as described in any one of claims 1-9. The slider seat (6) is provided with a connecting hole (601), the slider (5) is provided with a mounting hole (501), the connecting part (101) is threadedly connected to the connecting hole (601), the first spring (2), the second spring (3), and the washer (4) are located in the mounting hole (501), and the guide pin (1) is inserted into the mounting hole (501).

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