Positioning structure and stamping device

Abstract

The present invention relates to a positioning structure and a stamping device. The positioning structure is used for a stamping device, and includes a fixing part and a supporting assembly. The fixing part is used to be fixed to the stamping fixed die of the stamping device. The supporting assembly is arranged on the fixing part, and includes a floating positioning part and a supporting power part. The floating positioning part can move relative to the fixing part and is used to resist the workpiece located at the stamping fixed die, and the supporting power part applies a supporting force to the workpiece through the floating positioning part. Among them, the floating positioning part is constructed to be able to move relative to the fixing part following the position change of the workpiece, and to maintain resistance against the workpiece under the action of the supporting power part. The supporting power part of the above-mentioned positioning structure drives the floating positioning part to move relative to the fixing part and resist on the workpiece, applying a supporting force thereto, thereby producing a positioning effect. At the same time, since the floating positioning part can move relative to the positioning part, it can provide an adjustment margin for the workpiece within its range of movement while maintaining resistance against the workpiece, thereby meeting the adjustment requirements.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, and in particular to a positioning structure and a stamping device. Background Art

[0002] The cold stamping drawing die is the first step in the forming of automotive panels. During the forming process, multiple positioning structures are required to limit the sheet material to be stamped on the die pressing surface to ensure the forming accuracy of the part.

[0003] Currently, there are many types and functions of positioning structures in cold stamping and drawing dies, but they all fall into the category of plate-type positioning, which is fixed by screws in the positioning mounting grooves on the pressing surface. During production and commissioning, for various reasons, the movement of the sheet metal may exceed the positioning adjustment amount. In such cases, the plate-type positioning is limited by the position of the fixing screw holes or the positioning mounting grooves, resulting in insufficient adjustment margin, which can lead to the sheet metal being unable to be positioned. Summary of the Invention

[0004] Based on this, it is necessary to provide a positioning structure and a stamping device with sufficient adjustment margin to address the above problems.

[0005] A positioning structure for a stamping device, the positioning structure comprising:

[0006] A fixing member, used for fixing to the stamping fixed die of the stamping device; and

[0007] a holding component, provided on the fixing member, and comprising a floating positioning member and a holding power member, wherein the floating positioning member is movable relative to the fixing member and is used to hold against a workpiece located on the stamping fixed die, and the holding power member applies a holding force to the workpiece through the floating positioning member;

[0008] The floating positioning member is configured to move relative to the fixing member following the position change of the workpiece, and to maintain contact with the workpiece under the action of the contact power member.

[0009] The aforementioned positioning structure's abutting force generates a holding force that drives the floating positioning member to move relative to the fixed member fixed to the stamping die, causing it to abut against the workpiece within the die. This force then applies to the workpiece, effectively positioning it. Furthermore, because the floating positioning member can move relative to the positioning member, it maintains contact with the workpiece under the action of the abutting force member while providing margin for adjustment within its range of motion, meeting any adjustment requirements.

[0010] In one embodiment, the supporting power member includes a main body and a push pin provided at one end of the main body, the push pin is against the side of the floating positioning member facing away from the workpiece, and the push pin is constructed to be able to extend and retract following the movement of the floating positioning member, and to apply the supporting force to the floating positioning member and keep the floating positioning member against the workpiece during the extension and retraction process.

[0011] In one embodiment, a receiving cavity is constructed in the body;

[0012] The ejector pin further includes an elastic member and a pin body. The elastic member is disposed in the accommodating cavity and between the inner wall of the accommodating cavity and the pin body. The deformation direction of the elastic member is consistent with the extension and contraction direction of the ejector pin. The pin body is in contact with the floating positioning member.

[0013] In one embodiment, the body is operable to move along its own axial direction relative to the fixing member, and the extension and retraction direction of the ejector pin is parallel to the axial direction of the body.

[0014] In one embodiment, the supporting assembly further includes a stroke adjusting member, which is provided on the fixing member and is constructed with an internal thread. At least a portion of the outer surface of the main body is constructed with an external thread, and is threadedly engaged with the stroke adjusting member. When the main body is operably rotated around its own axis, it moves relative to the fixing member along its own axis through the stroke adjusting member.

[0015] In one embodiment, the ejector pin is detachably connected to the body.

[0016] In one embodiment, the floating positioning member is rotatably connected to the fixed member, and the workpiece and the supporting power member control the floating positioning member to rotate in the opposite direction relative to the fixed member.

[0017] In one embodiment, the floating positioning member includes a positioning plate and a guide plate connected thereto, the positioning plate is used to abut against the workpiece, and the guide plate is rotatably connected to the fixing member;

[0018] The guide plate is bent and connected to the positioning plate, and the surface thereof facing away from the fixing member is a guide surface, and the guide surface is used to guide the inserted workpiece to abut against the positioning plate.

[0019] In one embodiment, the fixing member includes a positioning base plate and a support plate, wherein the support plate is provided on the positioning base plate and is arranged on the movable path of the floating positioning member;

[0020] The supporting power member is arranged through the supporting plate.

[0021] A stamping device is characterized in that it includes a stamping fixed die, a stamping movable die and the above-mentioned positioning structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a schematic structural diagram of a positioning structure in one embodiment of the present invention;

[0024] Figure 2 for Figure 1 Another perspective structural diagram of the positioning structure shown;

[0025] Figure 3 for Figure 1 The schematic diagram of the structure of the positioning structure and the punching device shown.

[0026] Description of reference numerals:

[0027] 100. Positioning structure; 10. Fixing member; 11. Positioning base plate; 13. Support plate; 15. Reinforcement plate; 30. Retaining assembly; 31. Floating positioning member; 311. Positioning plate; 313. Guide plate; 33. Retaining power member; 331. Main body; 333. Ejector pin; 3331. Pin body; 35. Stroke adjusting member; 50. Rotating member; 200. Stamping device; 201. Stamping fixed die; 203. Stamping movable die; S. Guide surface; B. Avoidance gap. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] See also Figures 1 to 3 Some embodiments of the present invention provide a positioning structure 100 for a stamping device 200, including a fixing member 10 and a supporting assembly 30. The fixing member 10 is used to be fixed to the stamping fixed die 201 of the stamping device 200. The supporting assembly 30 is arranged on the fixing member 10, and includes a floating positioning member 31 and a supporting power member 33. The floating positioning member 31 can move relative to the fixing member 10 and is used to resist a workpiece (not shown) located on the stamping fixed die 201. The supporting power member 33 applies a supporting force to the workpiece through the floating positioning member 31. The floating positioning member 31 is constructed to be able to move relative to the fixing member 10 following the position change of the workpiece, and to maintain resistance against the workpiece under the action of the supporting power member 33.

[0035] The stamping device 200 usually includes a relatively fixed stamping die 201 and a stamping movable die 203 that presses down the workpiece to be processed and formed. The supporting power member 33 is used to generate a supporting force on the workpiece and is applied to the workpiece through the floating positioning member 31. The floating positioning member 31 can move relative to the fixed member 10, so that it can approach and support the workpiece under the action of the supporting power member 33. During the production and debugging process, when the workpiece needs to move, overcoming the supporting force can enable the floating positioning member 31 to follow its movement. The relative movement of the floating positioning member 31 to the fixed member 10 can be offset sliding, rotation, etc., as long as it can be displaced relative to the fixed member 10 and obtain an adjustment margin within its range of movement. The power source of the supporting power member 33 can be an elastic force such as a torsion spring, a magnetic force, etc., as long as it can generate a driving force for the floating positioning member 31 to generate a supporting force on the workpiece and allow the floating positioning member 31 to move back and forth. No specific limitation is made here.

[0036] The abutting power member 33 of the positioning structure 100 generates a holding force and drives the floating positioning member 31 to move relative to the fixed member 10 fixed on the stamping fixed die 201 and abut against the workpiece located on the stamping fixed die 201, thereby applying the holding force to the workpiece to produce a positioning effect. At the same time, since the floating positioning member 31 can move relative to the fixed member 10, it can provide an adjustment margin for the workpiece within its range of motion while maintaining abutment with the workpiece under the action of the abutting power member 33, thereby meeting the adjustment requirements. Traditional plate-type positioning devices require expanding the groove for installing the positioning device on the stamping fixed die 201 and the hole for avoiding the positioning device on the stamping movable die 203 in order to obtain an adjustment margin. However, this is not necessary for the present positioning structure 100. Sufficient adjustment margin can be obtained through the floating positioning member 31, saving a lot of costs for expansion processing and post-processing, and avoiding damage to the original structure of the mold. Without changing the main body of the stamping device 200, even if the mold is changed, the adjustment margin can be used to adapt and continue to exert the positioning effect.

[0037] Furthermore, the fixing member 10 includes a positioning base plate 11 and a support plate 13 . The support plate 13 is disposed on the positioning base plate 11 and is arranged on the movable path of the floating positioning member 31 . The supporting power member 33 is disposed through the support plate 13 .

[0038] The positioning base plate 11 is used to fix the stamping fixed die 201. The support plate 13 is located in the movable path of the floating positioning member 31. When the floating positioning member 31 moves to the support plate 13, it is blocked in one direction by the support plate 13. The abutting power member 33 is installed through the support plate 13, and one end abuts the side of the floating positioning member 31 facing away from the workpiece.

[0039] On the one hand, the support plate 13 provides a basic positioning function for the floating positioning member 31. When the floating positioning member 31 moves to abut against the support plate 13, it can be stably supported. On the other hand, the support member provides a fixed mounting position for the abutting power member 33. The abutting power member 33 passes through the support plate 13 and can abut against the floating positioning member 31. It is understood that the abutting power member 33 can also be connected to the fixed member 10 through other means, such as directly fixing it to the positioning base plate 11, etc., which are not specifically limited here.

[0040] Furthermore, the fixing member 10 further includes a reinforcing plate 15, which is disposed between the positioning base plate 11 and the support plate 13, with the three being perpendicular to each other. The reinforcing plate 15 strengthens the structural strength of the fixing member 10, making it more impact-resistant and meeting the strength requirements of stamping positioning.

[0041] In some embodiments, the supporting power member 33 includes a main body 331 and a push pin 333 provided at one end of the main body 331. The push pin 333 is against the side of the floating positioning member 31 facing away from the workpiece. The push pin 333 is constructed to be able to extend and retract following the movement of the floating positioning member 31, and to apply a supporting force to the floating positioning member 31 and keep the floating positioning member 31 against the workpiece during the extension and retraction process.

[0042] The supporting power member 33 acts on the floating positioning member 31 through its push pin 333, and while transmitting the supporting force through the floating positioning member 31, the floating positioning member 31 is allowed to move within a certain range through the extension and contraction of the push pin 333, so as to leave adjustment margin while maintaining the support for the workpiece.

[0043] It is understood that in some embodiments, the supporting power member 33 may directly support the workpiece and generate a supporting force thereon without the aid of the floating positioning member 31. The supporting power member 33 may also be a power member such as a torsion spring, with the two torsion spring arms respectively supporting the fixed member 10 and the floating positioning member 31, thereby generating a supporting force on the workpiece by driving the floating positioning member 31.

[0044] Furthermore, a receiving cavity (not shown) is constructed within the body 331. The ejector pin 333 also includes an elastic member (not shown) and a pin body 3331. The elastic member is disposed within the receiving cavity and between the inner wall of the receiving cavity and the pin body 3331. The elastic member deforms in the same direction as the ejector pin 333's expansion and contraction. The pin body 3331 contacts the floating positioning member 31.

[0045] The elastic member, while maintaining a constant force on the workpiece by pushing the pin 3331 against it, also possesses a retractable property, allowing the pin 3331 to move back and forth along the axis of the main body 331 during expansion and contraction, thereby achieving overall expansion and contraction of the ejector pin 333. When the ejector pin 333 is contracted, at least a portion of the pin 3331 is retracted within the accommodating cavity.

[0046] It is understandable that in addition to using elastic parts such as springs, the ejector pin 333 can also be provided with repelling magnets in the accommodating cavity and on the pin body 3331, etc., as long as they can serve as the power source of the resisting force and allow the pin body 3331 to move axially along the main body 331.

[0047] In some embodiments, the body 331 is operable to move along its own axis relative to the fixing member 10 , and the extension and retraction direction of the ejector pin 333 is parallel to the axis of the body 331 .

[0048] The main body 331 is controllably movable, and the direction of movement is parallel to the direction of extension and retraction of the ejector pin 333. Therefore, as the main body 331 moves, the ejector pin 333 disposed thereon also moves with it, and the extension and retraction range of the ejector pin 333 relative to the fixing member 10 changes, thereby adjusting the adjustment margin range.

[0049] Furthermore, the supporting assembly 30 also includes a stroke adjusting member 35, which is arranged on the fixing member 10 and is constructed with an internal thread. At least part of the outer surface of the main body 331 is constructed with an external thread and is threadedly matched with the stroke adjusting member 35. When the main body 331 is operably rotated around its own axis, it moves relative to the fixing member 10 along its own axis through the stroke adjusting member 35.

[0050] The stroke adjustment member 35 is specifically disposed on one side of the support plate 13, and the abutting power member 33 is disposed between the stroke adjustment member 35 and the support plate 13. The body 331 is threadedly engaged with the stroke adjustment member 35, and rotation thereof allows the body 331 to move axially relative to the fixing member 10. The range of movement of the body 331 is determined by the area and length of its external thread structure. As the body 331 moves, the range of movement of the pin 3331 at one end of the body 331 naturally changes, thereby changing the floating range of the floating positioning member 31.

[0051] Specifically, the ejector pin 333 is positioned on the side of the support plate 13 facing away from the workpiece, with the pin body 3331 completely retracted within the accommodating cavity. The end of the ejector pin 3333 closest to the pin body 3331 is adjusted via the travel adjustment member 35 until it is concealed from the workpiece-facing surface of the support. This allows the floating locator 31 to retract and completely conceal the pin body 3331 from the support surface, allowing the floating locator 31 to move into contact with the support.

[0052] It is understandable that in some other embodiments, the main body 331 and the stroke adjustment member 35 can also be matched in other ways, such as snap-fitting, and provided with multiple snap-fitting protrusions or grooves, and the movement and position adjustment of the main body 331 can be achieved by replacing different protrusions or grooves.

[0053] In some embodiments, the ejector pin 333 is detachably connected to the body 331 .

[0054] The ejector pin 333 is available in multiple sizes and can be disassembled and selected to mate with the main body 331. Specifications for the ejector pin 333 include, but are not limited to, varying lengths and diameters. Replacement can be done by replacing just the pin body 3331 or by replacing both the pin body 3331 and the elastic member. When replacing both the elastic member and the pin body 3331, it is also possible to replace elastic members with different elastic forces. This allows the use of ejector pins 333 of varying sizes to alter the holding effect and the range of adjustment margin.

[0055] In one embodiment, the working length of the pin 3331 is 15 mm. In other words, the pin 3331 can be retracted to a length of 15 mm. The main body 331 can be adjusted along its own axis via the stroke adjustment member 35 within a range of 0 mm to 15 mm. Therefore, the maximum adjustable abutment stroke of the abutting power member 33 is 30 mm. It is understood that this maximum stroke can be changed by adjusting the size and removing or replacing the ejector pin 333.

[0056] In some embodiments, the floating positioning member 31 is rotatably connected to the fixed member 10 , and the workpiece and the supporting power member 33 control the floating positioning member 31 to rotate in the opposite direction relative to the fixed member 10 .

[0057] The workpiece can push the floating positioning member 31 to rotate toward the fixed member 10, while the holding member 33 can push the floating positioning member 31 to rotate away from the fixed member 10. Therefore, the floating positioning member 31 is affected by the workpiece and the holding member 33 on both sides. In other words, the floating positioning member 31 is located between the two, and the holding member 33 exerts a holding force on the workpiece through the floating positioning member 31. The rotation range of the floating positioning member 31 is the adjustment margin range.

[0058] Driven by the abutting force member 33, the floating locating member 31 can always be abutted against the workpiece. When the force acting on the workpiece is greater than the abutting force, the workpiece can push the floating locating member 31 to achieve adjustment. Simultaneously, the abutting force member 33 abuts the side of the floating locating member 31 facing away from the workpiece. This rotational motion can expand the range of motion of the abutting force member 33 and increase the margin for adjustment. Furthermore, when the stamping die 203 is closed and pressed downward, the positioning plate 311 is also driven by the pressure of the stamping die 203 to rotate, gradually retracting relative to the fixed member 10 and avoiding the stamping die 311 until the stamping die 203 presses against the workpiece to complete the stamping.

[0059] Furthermore, the floating positioning member 31 includes a connected positioning plate 311 and a guide plate 313. The positioning plate 311 is used to abut against the workpiece, and the guide plate 313 is rotatably connected to the fixed member 10. The guide plate 313 is bent and connected to the positioning plate 311, and its surface facing away from the fixed member 10 is a guide surface S, which is used to guide the inserted workpiece to abut against the positioning plate 311.

[0060] When the workpiece is unloaded into the stamping die 201, it is guided by the guide surface S and gradually falls into the area of the positioning plate 311, where it is positioned and held by the positioning plate 311. The guide plate 313 is bent and connected to the positioning plate 311. When the positioning plate 311 is completely vertical, the guide plate 313 still has a certain inclination angle, maintaining its guiding function. Moreover, the guide plate 313 bent relative to the positioning plate 311 is more conducive to forming a rotational connection with the fixing member 10.

[0061] Furthermore, the positioning structure 100 further includes a rotating member 50. The floating positioning member 31 is rotatably connected to the fixed member 10 via the rotating member 50. Specifically, the rotating member 50 includes a fixed portion and a rotating portion rotatable relative to the fixed portion. The fixed portion is fixed to both the support plate 13 and the reinforcing plate 15, and the rotating portion is connected to the guide plate 313.

[0062] It is understood that the floating positioning member 31 can also achieve rotation through other means, such as a shaft connection. In addition, the movement of the floating positioning member 31 is not limited to rotation, and can also be translation. It only needs to be able to adjust the positional relationship between the floating positioning member 31 and the fixed member 10 during the movement to achieve floating positioning. The connection method can also be adaptively modified to a sliding connection, etc., and is not specifically limited here.

[0063] When the positioning structure 100 is in use, the workpiece to be processed and formed is first guided to the positioning plate 311 via the guide surface S. The positioning plate 311 then abuts and secures the workpiece under the action of the abutting member 33. The abutting member 33 can be extended and retracted to accommodate various positioning requirements via the ejector pin 333. During mold closing, as the movable die 203 is pressed downward, the floating positioning member 31 gradually rotates in response to the downward pressure, completing the positioning process. Furthermore, the adjustment margin range can be changed by replacing or rotating the ejector pin 333.

[0064] The present invention further provides a stamping device 200 , which includes a stamping fixed die 201 , a stamping movable die 203 and the above-mentioned positioning structure 100 .

[0065] The fixed die 201 is provided with a mounting groove, in which the positioning structure 100 is disposed. The movable die 203 is provided with an avoidance notch B to avoid the positioning structure 100 during stamping. When the movable die 203 is pressed down, the floating positioning member can gradually rotate until it is completely accommodated in the avoidance notch B.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A positioning structure for a stamping device, characterized in that: The positioning structure includes: A fixing member, used for fixing to the stamping fixed die of the stamping device; and a holding component, provided on the fixing member, and comprising a floating positioning member and a holding power member, wherein the floating positioning member is movable relative to the fixing member and is used to hold against a workpiece located on the stamping fixed die, and the holding power member applies a holding force to the workpiece through the floating positioning member; Wherein, the floating positioning member is configured to move relative to the fixed member following the position change of the workpiece, and to maintain contact with the workpiece under the action of the supporting power member; The supporting power member includes a body and a push pin provided at one end of the body, the push pin abuts against a side of the floating positioning member facing away from the workpiece, and the push pin is configured to extend and retract following the movement of the floating positioning member, and during the extension and retraction process, applies the supporting force to the floating positioning member and keeps the floating positioning member and the workpiece in contact with each other; The floating positioning member is rotatably connected to the fixed member, and the workpiece and the supporting power member control the floating positioning member to rotate in the opposite direction relative to the fixed member.

2. The positioning structure according to claim 1, characterized in that: The body is provided with a receiving cavity; The ejector pin further includes an elastic member and a pin body. The elastic member is disposed in the accommodating cavity and between the inner wall of the accommodating cavity and the pin body. The deformation direction of the elastic member is consistent with the extension and contraction direction of the ejector pin. The pin body is in contact with the floating positioning member.

3. The positioning structure according to claim 2, characterized in that: The main body is operable to move along its own axial direction relative to the fixing member, and the extension and retraction direction of the ejector pin is parallel to the axial direction of the main body.

4. The positioning structure according to claim 3, characterized in that: The supporting assembly also includes a stroke adjusting member, which is arranged on the fixing member and is constructed with an internal thread. At least part of the outer surface of the main body is constructed with an external thread and is threadedly matched with the stroke adjusting member. When the main body is operably rotated around its own axis, it moves along its own axis relative to the fixing member through the stroke adjusting member.

5. The positioning structure according to claim 1, characterized in that: The ejector pin is detachably connected to the body.

6. The positioning structure according to claim 1, characterized in that: The floating positioning member includes a positioning plate and a guide plate connected thereto, the positioning plate being used to abut against the workpiece, and the guide plate being rotatably connected to the fixing member; The guide plate is bent and connected to the positioning plate, and the surface thereof facing away from the fixing member is a guide surface, and the guide surface is used to guide the inserted workpiece to abut against the positioning plate.

7. The positioning structure according to claim 1, characterized in that: The fixing member includes a positioning base plate and a support plate, wherein the support plate is arranged on the positioning base plate and is arranged on the movable path of the floating positioning member; The supporting power member is arranged through the supporting plate.

8. A punching device, characterized in that: The stamping device includes a stamping fixed die, a stamping movable die and a positioning structure according to any one of claims 1 to 7.

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