In-mold turnover mechanism and equipment for stamping

Abstract

The invention relates to an in-mold turnover mechanism and equipment for stamping, the in-mold turnover mechanism for stamping comprises a supporting seat and a rigid plate body, the supporting seat is provided with a U-shaped groove, and the rigid plate body is movably connected with the supporting seat through a turnover driving assembly and is located in the U-shaped groove; the rigid plate body is provided with a first surface and a second surface, and a hollow groove penetrating through the first surface and the second surface of the rigid plate body is formed in the rigid plate body and used for containing workpieces. The first surface and the second surface are provided with a first supporting assembly and a second supporting assembly which are located in the hollowed-out groove and used for supporting the workpiece correspondingly, and when the workpiece is placed in the hollowed-out groove and needs to be turned over, the workpiece can be clamped; the supporting base is in positioning fit with the rigid plate body through the positioning assembly, and the rigid plate body is in guiding fit with the supporting base through the guiding assembly. While the rigid plate body is driven to turn over to drive the workpiece to turn over, the turning stability of the rigid plate body can be improved through the positioning assembly and the guide assembly, so that the accuracy of the position of the workpiece before and after turning over is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of automated mold processing, and more specifically, to an in-mold flipping mechanism and equipment for stamping. Background Art

[0002] In the field of automated mold processing technology, in order to stamp out burrs on both sides of a workpiece, it is usually necessary to change the direction of the workpiece. For this purpose, the existing technology has designed and developed a corresponding flipping mechanism. However, the existing flipping mechanisms are relatively simple. For example, the product is only fixed by a rigid component, and then the rigid component is driven to flip to a suitable position by the flipping mechanism, so as to adjust the orientation of the workpiece. Although it can play a role in driving the workpiece to flip, in actual application, the control of the flipping angle and position of the rigid component using this existing mechanism is not accurate enough, and it is difficult to ensure the accuracy of the position of the workpiece before and after flipping, which is easy to affect the subsequent processing quality and efficiency. Although some existing mechanisms will also consider using laser positioners to realize the positioning of the flipping angle and position of the rigid component, it is still impossible to avoid the problem of obvious offset when the rigid component is flipped.

[0003] Application Contents

[0004] The technical problem to be solved by the present application is to provide an in-mold flipping mechanism and equipment for stamping in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] On the one hand, the present application provides an in-mold flipping mechanism for stamping, including a support seat and a rigid plate body, the support seat is provided with a U-shaped groove, the rigid plate body is movably connected to the support seat through a flipping drive assembly and is located in the U-shaped groove, and the flipping drive assembly is used to drive the rigid plate body to flip in the U-shaped groove; the rigid plate body has a first surface and a second surface, and the rigid plate body is provided with a hollow groove running through the first surface and the second surface thereof to accommodate a workpiece; a first supporting assembly is provided on the first surface and located at the hollow groove to support the workpiece, and a second supporting assembly is provided on the second surface and located at the hollow groove to support the workpiece; when the workpiece is placed in the hollow groove, the first supporting assembly and the second supporting assembly are correspondingly located on two opposite sides of the workpiece to clamp the workpiece; the support seat is also provided with a positioning assembly that cooperates with the rigid plate body for positioning, and the rigid plate body is also provided with a guide assembly that cooperates with the guide of the support seat.

[0007] In some embodiments, the first support assembly includes a first telescopic cylinder and a first support column; at least two first telescopic cylinders are provided on the first surface at positions close to two opposite edges of the hollow groove, and the telescopic shaft heads of any two opposite first telescopic cylinders perform telescopic movement in the hollow groove in a direction close to or away from each other, and a first support column is provided on the telescopic shaft head of each of the first telescopic cylinders.

[0008] In some embodiments, the second support assembly includes a second telescopic cylinder and a second support column; at least two second telescopic cylinders are provided on the second surface at positions close to two opposite edges of the hollow groove, and the telescopic shaft heads of any two opposite second telescopic cylinders perform telescopic movements in the hollow groove in a direction close to or away from each other, and a second support column is provided on the telescopic shaft head of each second telescopic cylinder; a gap adapted to the thickness of the workpiece is formed between all the first support columns and the second support columns to clamp the workpiece.

[0009] In some embodiments, each of the first support columns is provided with a first L-shaped slot on the side facing the hollow groove; each of the second support columns is provided with a second L-shaped slot on the side facing the hollow groove; all of the first L-shaped slots and second L-shaped slots are used for the corresponding edges of the workpiece to be inserted.

[0010] In some embodiments, the flipping drive assembly includes a flipping cylinder, a first connecting shaft, a second connecting shaft and a ball bearing; the first connecting shaft and the second connecting shaft are correspondingly arranged on two opposite sides of the rigid plate body, and the central axes of the first connecting shaft and the second connecting shaft coincide with each other; the fixed end of the flipping cylinder is arranged on an outer wall surface of a support seat, and the end of the first connecting shaft away from the rigid plate body passes through the support seat and is fixedly connected to the driving shaft head of the flipping cylinder; the ball bearing is fixedly arranged on an inner wall surface of the support seat, and the end of the second connecting shaft away from the rigid plate body is fixedly connected to the inner ring of the ball bearing.

[0011] In some embodiments, the support seat includes a base plate, a first vertical plate and a second vertical plate that are integrally connected, and the first vertical plate and the second vertical plate are correspondingly located on two opposite sides of the base plate; the flip cylinder is arranged on the first vertical plate, the ball bearing is arranged on the second vertical plate, and the rigid plate body is arranged between the first vertical plate and the second vertical plate and is located above the base.

[0012] In some embodiments, the positioning assembly includes a third telescopic cylinder and a positioning pin; two third telescopic cylinders are provided on the outer wall surface of the second vertical plate facing away from the rigid plate body, and the two third telescopic cylinders are respectively arranged close to the left and right sides of the rigid plate body; the second vertical plate is also provided with two through holes corresponding to the telescopic shaft heads of the two third telescopic cylinders, and the telescopic shaft heads of the two third telescopic cylinders are also provided with a positioning pin, and the two positioning pins are movably arranged in the two through holes in a one-to-one manner; two positioning holes are provided on the side surface of the rigid plate body opposite to the second vertical plate, and the two positioning holes are respectively used for inserting two positioning pins.

[0013] In some embodiments, the guide assembly includes a guide column and a limiting protrusion; a circular groove and an annular groove surrounding the circular groove are provided on the inner wall surface of the second vertical plate facing the rigid plate body; the ball bearing is arranged in the circular groove; a guide column is also provided on one side surface of the rigid plate body facing the second vertical plate at a position close to the second connecting axis, and a limiting protrusion is provided at one end of the guide column away from the rigid plate body and extends into the annular groove.

[0014] In some embodiments, the inner side of the annular groove facing the rigid plate body is provided with four equally spaced limiting recesses, and the four limiting recesses are distributed upward, downward, left and right; the limiting protrusions are adapted and snapped into the limiting recesses at the corresponding positions one by one when the rigid plate body is flipped.

[0015] On the other hand, the present application also provides an in-mold turning device for stamping, comprising an in-mold turning mechanism for stamping as described in any of the above items.

[0016] The beneficial effects of the present application are as follows: different from the prior art, in the in-mold flipping mechanism for stamping of the present application, the rigid plate body can flip to a suitable angle in the U-shaped groove under the drive of the flipping drive assembly, thereby driving the workpiece to flip to a suitable angle for processing; the first surface and the second surface of the rigid plate body are respectively provided with a first support assembly and a second support assembly located at the hollow groove to support the workpiece, and when the workpiece is placed in the hollow groove and needs to be flipped, the workpiece can be clamped by the cooperation of the first support assembly and the second support assembly; the support seat is positioned and cooperated with the rigid plate body through the positioning assembly, and the rigid plate body is guided and cooperated with the support seat through the guide assembly; while driving the rigid plate body to flip to drive the workpiece to flip, the stability of the rigid plate body flipping can also be increased through the positioning assembly and the guide assembly to ensure the accuracy of the position of the workpiece before and after flipping, which helps to ensure the workpiece processing quality and improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic side view of the in-mold flipping mechanism for stamping in an embodiment of the present application;

[0018] Figure 2is another side view schematic diagram of the in-mold flipping mechanism for stamping in the embodiment of the present application;

[0019] Figure 3 is a front view schematic diagram of the second vertical plate in the embodiment of the present application;

[0020] Figure 4 is a schematic diagram of the distribution of the first support assembly on the rigid plate in an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of the distribution of the second support assembly on the rigid plate in an embodiment of the present application;

[0022] Figure 6 is a side view schematic diagram of a first support assembly in an embodiment of the present application;

[0023] Figure 7 is a side view schematic diagram of the second support assembly in an embodiment of the present application;

[0024] The names and serial numbers marked in the figure are: support seat-1; rigid plate body-2; hollow groove-201; first telescopic cylinder-3; first support column-31; second telescopic cylinder-4; second support column-41; first L-shaped slot-310; second L-shaped slot-410; flip cylinder-51; first connecting shaft-52; second connecting shaft-53; ball bearing-54; bottom plate-11; first vertical plate-12; second vertical plate-13; third telescopic cylinder-6; through hole-130; positioning pin-61; positioning hole-202; mounting frame-62; circular groove-131; annular groove-132; guide column-7; limiting protrusion-71; limiting recess-1320. DETAILED DESCRIPTION

[0025] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, workpiece or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, workpieces or devices.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0028] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" etc. indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0030] Embodiment 1: The present application embodiment provides a stamping die turning mechanism, such as Figures 1 to 5 As shown in, the in-mold flipping mechanism for stamping includes a support seat 1 and a rigid plate body 2, the support seat 1 is provided with a U-shaped groove, the rigid plate body 2 is movably connected to the support seat 1 through a flipping drive assembly and is located in the U-shaped groove, and the flipping drive assembly is used to drive the rigid plate body 2 to flip in the U-shaped groove; the rigid plate body 2 has a first surface and a second surface, and the rigid plate body 2 is provided with a hollow groove 201 running through the first surface and the second surface thereof to accommodate the workpiece; a first supporting assembly is provided on the first surface and located at the hollow groove 201 to support the workpiece, and a second supporting assembly is provided on the second surface and located at the hollow groove 201 to support the workpiece; when the workpiece is placed in the hollow groove 201, the first supporting assembly and the second supporting assembly are correspondingly located on two opposite sides of the workpiece to clamp the workpiece; a positioning assembly is also provided on the support seat 1 for positioning and cooperating with the rigid plate body 2, and a guiding assembly is also provided on the rigid plate body 2 for guiding and cooperating with the support seat 1.

[0031] In this embodiment, the first support assembly includes a first telescopic cylinder 3 and a first support column 31. Specifically, at least two first telescopic cylinders 3 are arranged at intervals on the first surface at positions close to two opposite edges of the hollow groove 201, and the telescopic shaft heads of any two opposite first telescopic cylinders 3 perform telescopic movements in the direction of approaching or moving away from each other at the hollow groove 201, and a first support column 31 is provided on the telescopic shaft head of each first telescopic cylinder 3. Further, the second support assembly includes a second telescopic cylinder 4 and a second support column 41. Specifically, at least two second telescopic cylinders 4 are arranged at intervals on the second surface at positions close to two opposite edges of the hollow groove 201, and the telescopic shaft heads of any two opposite second telescopic cylinders 4 perform telescopic movements in the direction of approaching or moving away from each other at the hollow groove 201, and a second support column 41 is provided on the telescopic shaft head of each second telescopic cylinder 4; a gap adapted to the thickness of the workpiece is formed between all the first support columns 31 and the second support columns 41 to clamp the workpiece.

[0032] In this embodiment, the hollow groove 201 cooperates with all the first support columns 31 and the second support columns 41 to effectively position the workpiece before, during and after flipping to prevent the workpiece from deviating. For example, at least four second telescopic cylinders 4 located below the rigid plate body 2 work together to make each second support column 41 extend together at the hollow groove 201 to form a support platform, thereby lifting the workpiece placed in the hollow groove 201. When the workpiece is properly placed, at least four first telescopic cylinders 3 located above the rigid plate body 2 work together to make each first support column 31 extend together at the hollow groove 201 to cooperate with each second support column 41 to clamp the workpiece, so that the workpiece is stably driven to flip while the rigid plate body 2 is flipped, so that the workpiece can be processed by other processing mechanisms later. In the current clamping state, when the workpiece needs to be taken out, the first telescopic cylinder 3 or the second telescopic cylinder 4 located above the rigid plate body 2 controls the corresponding first support column 31 or the second support column 41 to return to the original position. Wherein, under the action of the flip driving assembly, the optimal flip angle is 180°.

[0033] It can be understood that when the second surface of the rigid plate body 2 faces downward, at least four second telescopic cylinders 4 on the second surface are located below the rigid plate body 2, and at least four first telescopic cylinders 3 are located above the rigid plate body 2. Conversely, when the first surface of the rigid plate body 2 faces downward, at least four first telescopic cylinders 3 on the first surface are located below the rigid plate body 2, and at least four second telescopic cylinders 4 are located above the rigid plate body 2. Whether the first surface or the second surface of the rigid plate body 2 faces upward does not affect the clamping of the workpiece by the first support column 31 and the second support column 41.

[0034] In this embodiment, the at least four first telescopic cylinders 3 on the first surface are distributed in pairs in left and right correspondence, and the at least four second telescopic cylinders 4 on the second surface are also distributed in pairs in left and right correspondence; wherein the at least four second telescopic cylinders 4 can be arranged in one-to-one correspondence with the at least four first telescopic cylinders 3, or can be arranged in a staggered manner. In other embodiments, when the at least four first telescopic cylinders 3 on the first surface are distributed in pairs in left and right correspondence, the at least four second telescopic cylinders 4 on the second surface are distributed in pairs in front and back correspondence.

[0035] Further, such as Figure 6 and Figure 7 As shown in the figure, each first support column 31 is provided with a first L-shaped slot 310 on the side facing the hollow groove 201; each second support column 41 is provided with a second L-shaped slot 410 on the side facing the hollow groove 201; all the first L-shaped slots 310 and the second L-shaped slots 410 are used for the corresponding edges of the workpiece to be inserted, so as to position the workpiece, prevent deviation, increase the stability of clamping, and thus help to ensure processing accuracy.

[0036] In this embodiment, the flipping drive assembly includes a flipping cylinder 51, a first connecting shaft 52, a second connecting shaft 53 and a ball bearing 54; the first connecting shaft 52 and the second connecting shaft 53 are correspondingly arranged on two opposite sides of the rigid plate body 2, and the central axes of the first connecting shaft 52 and the second connecting shaft 53 coincide, thereby ensuring the stability of flipping; the fixed end of the flipping cylinder 51 is arranged on an outer wall surface of the support seat 1, and the end of the first connecting shaft 52 away from the rigid plate body 2 passes through the support seat 1 and is fixedly connected to the driving shaft head of the flipping cylinder 51; the ball bearing 54 is fixedly arranged on an inner wall surface of the support seat 1, and the end of the second connecting shaft 53 away from the rigid plate body 2 is fixedly connected to the inner ring of the ball bearing 54, thereby realizing the flipping drive operation of the rigid plate body 2.

[0037] In this embodiment, the support seat 1 includes a bottom plate 11, a first vertical plate 12 and a second vertical plate 13 which are integrally connected. The first vertical plate 12 and the second vertical plate 13 are correspondingly located at two opposite sides of the bottom plate 11; a U-shaped groove is formed between the bottom plate 11, the first vertical plate 12 and the second vertical plate 13. The heights of the first vertical plate 12 and the second vertical plate 13 are consistent. The flip cylinder 51 is disposed on the first vertical plate 12, the ball bearing 54 is disposed on the second vertical plate 13, and the rigid plate body 2 is disposed between the first vertical plate 12 and the second vertical plate 13 and located above the base.

[0038] In this embodiment, the positioning assembly includes a third telescopic cylinder 6 and a positioning pin 61. Two third telescopic cylinders 6 are arranged on the outer wall surface of the second vertical plate 13 facing away from the rigid plate body 2, and the two third telescopic cylinders 6 are respectively arranged near the left and right sides of the rigid plate body 2; the second vertical plate 13 is also provided with two through holes 130 corresponding to the telescopic shaft heads of the two third telescopic cylinders 6, and the telescopic shaft heads of the two third telescopic cylinders 6 are also provided with a positioning pin 61, and the two positioning pins 61 are movably arranged in the two through holes 130 in a one-to-one correspondence; two positioning holes 202 are provided on the side surface of the rigid plate body 2 opposite to the second vertical plate 13, and the two positioning holes 202 are respectively used for inserting the two positioning pins 61. When the rigid plate body 2 is flipped 180° or 360°, the rigid plate body 2 can be further positioned by the cooperation of the positioning pin 61 and the positioning hole 202. In this embodiment, the cross-sectional shape of any positioning pin 61 and the positioning hole 202 is polygonal, which effectively increases the stability of the plug-in fit. The purpose of flipping and positioning the flip cylinder 51 can be achieved by arranging a positioning device such as a laser positioner at a suitable position.

[0039] Furthermore, two mounting frames 62 are provided on the outer wall surface of the second vertical plate 13 facing away from the rigid plate body 2, and the fixed ends of the two third telescopic cylinders 6 are correspondingly arranged on the side plates in the two mounting frames 62; the telescopic shaft heads of the two third telescopic cylinders 6 respectively pass through the side plates in the corresponding mounting frames 62 and adapt to the two through holes 130 one by one; in the initial state, the telescopic shaft head of each third telescopic cylinder 6 partially extends into the corresponding through hole 130, so as to drive the positioning pin 61 to move an appropriate distance to insert into the positioning hole 202 or move out of the positioning hole 202.

[0040] In this embodiment, the guide assembly includes a guide column 7 and a limiting protrusion 71. A circular groove 131 and an annular groove 132 surrounding the circular groove 131 are provided on the inner wall surface of the second vertical plate 13 facing the rigid plate body 2; the ball bearing 54 is fixed in the circular groove 131. A guide column 7 is also provided on the side surface of the rigid plate body 2 facing the second vertical plate 13 at a position close to the second connecting shaft 53, and a limiting protrusion 71 extending into the annular groove 132 is provided at one end of the guide column 7 away from the rigid plate body 2, which is used to further increase the stability of the rigid plate body 2 when flipping, so that the rigid plate body 2 can flip in the correct direction. Among them, the limiting protrusion 71 is spherical in shape.

[0041] Furthermore, four equally spaced limiting recesses 1320 are provided on the inner side of the annular groove 132 facing the rigid plate body 2, and the four limiting recesses 1320 are distributed in the upper, lower, left and right directions. The concave shape of each limiting recess 1320 is hemispherical. When the rigid plate body 2 is flipped, the limiting protrusions 71 are adapted and snapped into the limiting recesses 1320 at the corresponding positions one by one to ensure that the rigid plate body 2 is flipped into place without deviation.

[0042] Embodiment 2: The embodiment of the present application provides an in-mold flipping device for stamping, which includes the in-mold flipping mechanism for stamping provided in Embodiment 1. For the description of the in-mold flipping mechanism for stamping, please refer to Embodiment 1, which will not be repeated in this embodiment.

[0043] It should be understood that ordinary technical workers in the field can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A stamping die turning mechanism, characterized in that: It includes a support seat and a rigid plate body, the support seat is provided with a U-shaped groove, the rigid plate body is movably connected to the support seat through a flipping drive assembly and is located in the U-shaped groove, and the flipping drive assembly is used to drive the rigid plate body to flip in the U-shaped groove; the rigid plate body has a first surface and a second surface, and the rigid plate body is provided with a hollow groove running through the first surface and the second surface thereof to accommodate a workpiece; a first support assembly is provided on the first surface and is located at the hollow groove to support the workpiece, and a second support assembly is provided on the second surface and is located at the hollow groove to support the workpiece; when the workpiece is placed in the hollow groove, the first support assembly and the second support assembly are correspondingly located on two opposite sides of the workpiece to clamp the workpiece; the support seat is also provided with a positioning assembly that cooperates with the rigid plate body for positioning, and the rigid plate body is also provided with a guide assembly that cooperates with the guide of the support seat.

2. The in-mold turning mechanism for stamping according to claim 1, characterized in that: The first supporting assembly includes a first telescopic cylinder and a first supporting column; at least two first telescopic cylinders are provided on the first surface at positions close to two opposite edges of the hollow groove, and the telescopic shaft heads of any two opposite first telescopic cylinders perform telescopic movement in the hollow groove in the direction of approaching or moving away from each other, and a first supporting column is provided on the telescopic shaft head of each of the first telescopic cylinders.

3. The in-mold turning mechanism for stamping according to claim 2, characterized in that: The second support assembly includes a second telescopic cylinder and a second support column; at least two second telescopic cylinders are provided on the second surface at positions close to two opposite edges of the hollow groove, and the telescopic shaft heads of any two opposite second telescopic cylinders perform telescopic movements in the hollow groove in the direction of approaching or moving away from each other, and a second support column is provided on the telescopic shaft head of each second telescopic cylinder; a gap adapted to the thickness of the workpiece is formed between all the first support columns and the second support columns to clamp the workpiece.

4. The in-mold turning mechanism for stamping according to claim 3, characterized in that: Each of the first support columns has a first L-shaped slot on one side facing the hollow groove; each of the second support columns has a second L-shaped slot on one side facing the hollow groove; all of the first L-shaped slots and second L-shaped slots are used for the corresponding edges of the workpiece to be inserted.

5. The in-mold turning mechanism for stamping according to claim 1, characterized in that: The flipping drive assembly includes a flipping cylinder, a first connecting shaft, a second connecting shaft and a ball bearing; the first connecting shaft and the second connecting shaft are correspondingly arranged on two opposite sides of the rigid plate body, and the central axes of the first connecting shaft and the second connecting shaft coincide with each other; the fixed end of the flipping cylinder is arranged on an outer wall surface of a support seat, and the end of the first connecting shaft away from the rigid plate body passes through the support seat and is fixedly connected to the driving shaft head of the flipping cylinder; the ball bearing is fixedly arranged on an inner wall surface of the support seat, and the end of the second connecting shaft away from the rigid plate body is fixedly connected to the inner ring of the ball bearing.

6. The in-mold turning mechanism for stamping according to claim 5, characterized in that: The support seat includes a bottom plate, a first vertical plate and a second vertical plate that are integrally connected, and the first vertical plate and the second vertical plate are correspondingly located on two opposite sides of the bottom plate; the flip cylinder is arranged on the first vertical plate, the ball bearing is arranged on the second vertical plate, and the rigid plate body is arranged between the first vertical plate and the second vertical plate and located above the base.

7. The in-mold turning mechanism for stamping according to claim 6, characterized in that: The positioning assembly includes a third telescopic cylinder and a positioning pin; two third telescopic cylinders are arranged on the outer wall surface of the second vertical plate facing away from the rigid plate body, and the two third telescopic cylinders are respectively arranged close to the left and right sides of the rigid plate body; the second vertical plate is also provided with two through holes corresponding to the telescopic shaft heads of the two third telescopic cylinders, and the telescopic shaft heads of the two third telescopic cylinders are also provided with a positioning pin, and the two positioning pins are movably arranged in the two through holes in a one-to-one manner; two positioning holes are provided on the side surface of the rigid plate body opposite to the second vertical plate, and the two positioning holes are respectively used for inserting two positioning pins.

8. The in-mold turning mechanism for stamping according to claim 6, characterized in that: The guide assembly includes a guide column and a limiting protrusion; a circular groove and an annular groove surrounding the circular groove are provided on the inner wall surface of the second vertical plate facing the rigid plate body; the ball bearing is arranged in the circular groove; a guide column is also provided on one side surface of the rigid plate body facing the second vertical plate at a position close to the second connecting axis, and a limiting protrusion is provided on the end of the guide column away from the rigid plate body and extends into the annular groove.

9. The in-mold turning mechanism for stamping according to claim 8, characterized in that: The inner side of the annular groove facing the rigid plate body is provided with four equally spaced limiting recesses, which are distributed upward, downward, left and right; the limiting protrusions are adapted and snapped into the limiting recesses at corresponding positions one by one when the rigid plate body is flipped.

10. A stamping die turning device, characterized in that: It comprises the in-mold turning mechanism for stamping as described in any one of claims 1-9.

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