Combined stamping die

Abstract

The invention provides a combined stamping die, and relates to the field of stamping dies. Two rotating blocks are rotationally connected to the supporting component, four lower dies are installed on the upper end face of the lower rotating block in an annular array shape, and four upper dies are installed on the bottom end face of the upper rotating block in an annular array shape. Through cooperation of a rotating block and a clamping and fixing mechanism, when the stamping die needs to be replaced, a bolt does not need to be screwed with the help of a tool, and therefore the convenience and the replacement efficiency of the stamping die during replacement are greatly improved; the stamping die solves the problems that in the using process of a traditional stamping die, when the stamping die is replaced according to needs, bolts need to be unscrewed and taken down with the help of a tool, then a lower die and an upper die in another stamping die are fixed to a workbench of a press machine and a sliding block of the press machine through the bolts correspondingly, and the stamping die cannot be replaced. And therefore, the convenience and the replacement efficiency of the stamping die during replacement are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping dies, in particular to a combined stamping die. Background Art

[0002] Stamping is a forming process that uses a press and a die to apply external force to sheet metal, strip, tube, or profile, causing plastic deformation or separation, thereby obtaining a workpiece (stamped part) of the desired shape and size. The die used in stamping is called a stamping die. Stamping dies are specialized tools used to mass-process materials (metal or non-metal) into the desired parts.

[0003] However, during the use of traditional stamping dies, when the stamping dies are replaced as needed, since the lower die and upper die in the stamping dies are generally fixed to the workbench of the press and the slide of the press respectively by a large number of bolts, when replacing the stamping dies, it is necessary to use tools to loosen and remove these bolts first, and then fix the lower die and upper die in another stamping die to the workbench of the press and the slide of the press respectively by bolts, thereby reducing the convenience and efficiency of replacing the stamping dies. In addition, during the stamping process of traditional stamping dies, the bolts used to fix the stamping dies are easily loosened due to stress, which causes the lower die and upper die in the stamping dies to be easily misaligned during the stamping process, thereby reducing the stamping accuracy of the stamping dies. Summary of the Invention

[0004] The disclosed embodiment relates to a combined stamping die, which, through the cooperation of a rotating block and a clamping and fixing mechanism, can replace the stamping die without the need to tighten the bolts with the aid of tools, thereby greatly improving the convenience and efficiency of replacing the stamping die; through the cooperation of a locking gear and a locking mechanism, can effectively avoid the loosening of the fixing bolts after tightening them, thereby avoiding the phenomenon of the lower die and the upper die in the stamping die being misaligned during the stamping process, thereby improving the stamping accuracy of the stamping die.

[0005] In a first aspect of the present disclosure, a combined stamping die is provided, specifically comprising: a supporting component; two rotating blocks are rotatably connected to the supporting component, and the upper end surface of a lower rotating block is provided with four lower molds in a circular array, and the bottom end surface of an upper rotating block is provided with four upper molds in a circular array; two clamping and fixing mechanisms are provided on the supporting component, and eight fixing bolts are movably inserted on the supporting component, and a locking gear is fixedly connected to each fixing bolt; eight locking mechanisms are installed on the supporting component, and eight one-way limit mechanisms are provided on the supporting component.

[0006] In at least some embodiments, the support component includes a lower support body, an upper support body, a guide slide, a guide slide, a mounting plate, a blanking opening, a rectangular opening, a circular through hole and a T-shaped connecting groove. A guide slide is fixedly connected to the four corners of the upper end face of the lower support body, and a guide slide is fixedly connected to the four corners of the upper support body, and the four guide slides are slidably connected to the four guide slides; two mounting plates are provided on the front and rear sides of the lower support body and the upper support body, and a blanking opening is provided in the middle of the front side of the bottom end face of the lower support body; two rectangular openings and eight circular through holes are provided on the left end faces of the lower support body and the upper support body, and a T-shaped connecting groove is provided in the middle of the opposite surfaces of the lower support body and the upper support body.

[0007] In at least some embodiments, a T-shaped connecting block is fixedly connected to the middle of the back sides of the two rotating blocks, and the T-shaped connecting grooves opened on the opposite sides of the lower support body and the upper support body are respectively rotatably connected to the T-shaped connecting blocks on the two rotating blocks; the bottom end surface of the lower rotating block is provided with four rectangular discharge openings in a circular array.

[0008] In at least some embodiments, the clamping and fixing mechanism includes a clamping screw, a driving block, a sprocket, a rotating handwheel, a sliding rod, a clamping block and a rectangular plug-in slot. The number of the clamping screws is two, and the two clamping screws in the upper clamping and fixing mechanism are rotatably connected to the two rectangular through-holes opened on the upper support body, and the two clamping screws in the lower clamping and fixing mechanism are rotatably connected to the two rectangular through-holes opened on the lower support body; the outside of each clamping screw is symmetrically provided with two reverse threads, and each clamping screw is ... The outside of the tightening screw is connected to two driving blocks through two reverse threads, and each driving block is provided with a clamping block. A sprocket is fixedly installed on the left and right sides of the outside of each clamping screw, and each two adjacent sprockets are connected by a chain transmission. A rotating handwheel is provided at the left and right ends of each clamping screw, and each rotating handwheel is provided with a hexagonal groove; four sliding rods are fixedly connected to each of the driving blocks, and the sliding rods can be slidably connected to the circular through holes; each of the driving blocks is provided with a rectangular plug-in slot.

[0009] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0010] In at least some embodiments, when the locking mechanism is in the locked limit state, the two locking bars are in close contact with the outer peripheral surface of the locking gear.

[0011] In at least some embodiments, the one-way limit mechanism includes a frame, a rectangular sliding block, a plug-in block, an L-shaped pull rod and a limit plate. The frames of the four lower one-way limit mechanisms are fixedly installed on the outside of the lower support body, and the frames of the four upper one-way limit mechanisms are fixedly installed on the outside of the upper support body. The inside of the frame is slidably connected with a rectangular sliding block, and the head end face of the rectangular sliding block is provided with a plug-in block passing through the head of the frame, and the corners on one side of the head end face of the plug-in block are set as chamfers; the tail end face of the rectangular sliding block is rotatably connected with an L-shaped pull rod, and the outside of the L-shaped pull rod is located inside the frame and is provided with a spring; the tail end face of the frame is provided with a limit plate, and the tail end of the limit plate is provided with a notch groove.

[0012] In at least some embodiments, when the one-way limiting mechanism is in the limiting state, the plug-in block is plugged into the rectangular plug-in slot.

[0013] In at least some embodiments, when the clamping and fixing mechanism is in the clamping and fixing state, the left and right clamping blocks are in close contact with the left and right end surfaces of the rotating block respectively.

[0014] The present invention provides a combined stamping die, which has the following beneficial effects: 1. Through the cooperation of the rotating block and the clamping and fixing mechanism, when the stamping die needs to be replaced, the left and right driving blocks can be driven to move outward at the same time by rotating the clamping screw, so that the rotating block loses its clamping and fixing function. Then, the two rotating blocks are rotated to realize the rotation switching work with the four lower dies and the four upper dies. After switching, the clamping and fixing effect of the rotating block can be achieved by rotating the clamping screw in the opposite direction. As a result, during the replacement process of the stamping die, there is no need to use tools to tighten the bolts, thereby greatly improving the convenience and replacement efficiency of the stamping die.

[0015] 2. Through the cooperation of the locking gear and the locking mechanism, when the fixing bolt is tightened, the handle stuck in the inner side of the concave limit block can be taken out, and then the rectangular slider moves toward the head end with the locking strip under the action of the spring force inside the rectangular slide, so that the locking strip is in close contact with the outer peripheral surface of the locking gear, effectively avoiding the loosening of the fixing bolt and avoiding the deviation of the lower die and the upper die in the stamping die during the stamping process, thereby improving the stamping accuracy of the stamping die.

[0016] 3. Through the cooperation of the rectangular plug-in slot and the one-way limit mechanism, after the rotating block is clamped and fixed, the plug-in block can be inserted into the rectangular plug-in slot so that the driving blocks on the left and right sides can no longer move outward, thereby improving the reliability of the clamping and fixing mechanism when clamping and fixing the rotating block, avoiding the occurrence of movement of the rotating block, and thus improving the accuracy of the stamping die during the stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure: Figure 1 A structural diagram showing the overall structure of the present application; Figure 2 A schematic diagram showing the structure of the present application from a bottom perspective is shown; Figure 3 A schematic diagram showing the structure of the present application in a split state is shown; Figure 4 A schematic diagram of a partial cross-section of the lower support body and the upper support body of the present application is shown; Figure 5 Shows a schematic structural diagram of a rotating block at the bottom of the present application; Figure 6 It shows a schematic diagram of the structure of the clamping and fixing mechanism of the present application after being disassembled; Figure 7 A schematic structural diagram of the fixing bolt, locking gear, and locking mechanism of the present application is shown; Figure 8 It shows a schematic diagram of the structure of the locking mechanism of the present application after being disassembled; Figure 9 A schematic structural diagram of the one-way limiting mechanism of the present application is shown; Figure 10 A schematic diagram showing the structure of a lower rotating block of the present application in a state where the clamping and fixing function is lost; Figure 11 Shows the application Figure 10 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0020] Reference Signs List 1. Support components; 101. Lower support body; 102. Upper support body; 103. Guide slide; 104. Guide slide; 105. Mounting plate; 106. Blanking opening; 107. Rectangular opening; 108. Circular through hole; 109. T-shaped connecting groove; 2. Rotating block; 201. T-type connecting block; 3. Lower mold; 4. Upper mold; 5. Clamping and fixing mechanism; 501. Clamping screw; 502. Driving block; 503. Sprocket; 504. Rotating hand wheel; 505. Sliding rod; 506. Clamping block; 507. Rectangular plug-in slot; 6. Fixing bolt; 601. Locking gear; 7. Locking mechanism; 701. Rectangular slide; 702. Rectangular slider; 703. Limit slider; 704. Sliding block; 705. Concave limit block; 706. Square sliding column; 707. Locking strip; 8. One-way limiting mechanism; 801. Frame; 802. Rectangular sliding block; 803. Connecting block; 804. L-shaped pulling rod; 805. Limiting plate. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 11 : The present invention proposes a combined stamping die, comprising: a support component 1; two rotating blocks 2 are rotatably connected to the support component 1, and the upper end surface of the lower rotating block 2 is installed with four lower molds 3 in a ring array, and the bottom end surface of the upper rotating block 2 is installed with four upper molds 4 in a ring array; two clamping and fixing mechanisms 5 are provided on the support component 1, and eight fixing bolts 6 are movably inserted on the support component 1, and each fixing bolt 6 is fixedly connected to a locking gear 601; eight locking mechanisms 7 are installed on the support component 1, and eight one-way limiting mechanisms 8 are provided on the support component 1, which are used to limit the driving block 502 in one direction.

[0023] The support component 1 includes a lower support body 101, an upper support body 102, a guide slide 103, a guide slide 104, a mounting plate 105, a blanking port 106, a rectangular port 107, a circular through hole 108 and a T-shaped connecting groove 109. The four corners of the upper end surface of the lower support body 101 are fixedly connected to a guide slide 103, and the four corners of the upper support body 102 are fixedly connected to a guide slide 104, and the four guide slides 104 slide with the four guide slides 103. Connection; two mounting plates 105 are provided on the front and rear sides of the lower support body 101 and the upper support body 102, and a blanking opening 106 is provided in the middle of the front side of the bottom end face of the lower support body 101; two rectangular openings 107 and eight circular through holes 108 are provided on the left end faces of the lower support body 101 and the upper support body 102, and a T-shaped connecting groove 109 is provided in the middle of the opposite surfaces of the lower support body 101 and the upper support body 102; through the setting of the support component 1, it is used to install the lower mold 3 and the upper mold 4.

[0024] The two rotating blocks 2 are fixedly connected to a T-shaped connecting block 201 in the middle of the back surface of each other, and the T-shaped connecting grooves 109 on the opposite surfaces of the lower support body 101 and the upper support body 102 are respectively rotatably connected to the T-shaped connecting blocks 201 on the two rotating blocks 2; the bottom end surface of the lower rotating block 2 is provided with four rectangular unloading openings in a circular array; the clamping and fixing mechanism 5 includes a clamping screw 501, a driving block 502, a sprocket 503, a rotating handwheel 504, a sliding rod 505, a clamping block 506 and The rectangular plug-in slot 507, the number of the clamping screws 501 is two, the two clamping screws 501 in the upper clamping and fixing mechanism 5 are rotatably connected to the two rectangular through-holes 107 opened on the upper support body 102, and the two clamping screws 501 in the lower clamping and fixing mechanism 5 are rotatably connected to the two rectangular through-holes 107 opened on the lower support body 101; the outside of each clamping screw 501 is symmetrically provided with two reverse threads, and the outside of each clamping screw 501 is symmetrically provided with two reverse threads, and the outside of each clamping screw 501 is symmetrically provided with two reverse threads, and the outside of each clamping screw 501 is symmetrically provided with two reverse threads, and the inside ... the There are two driving blocks 502 connected by two reverse threads, each of which is provided with a clamping block 506, and a sprocket 503 is fixedly installed on the left and right sides of each clamping screw 501, and each two adjacent sprockets 503 are connected by chain transmission, and each clamping screw 501 is provided with a rotating handwheel 504 at both ends, and each rotating handwheel 504 is provided with a hexagonal groove; each driving block 502 is fixedly connected to four sliding rods 505, and the sliding rods 505 can be slidably connected to the circular through hole 108; each driving block 502 is provided with a rectangular plug-in slot 507; when the clamping and fixing mechanism 5 is in a clamping and fixing state, the clamping blocks 506 on the left and right sides are respectively in close contact with the left and right end surfaces of the rotating block 2; through the cooperation between the rotating block 2 and the clamping and fixing mechanism 5, the stamping die does not need to be tightened with the help of tools during the replacement process, thereby greatly improving the convenience and replacement efficiency of the stamping die during replacement.

[0025] The locking mechanism 7 includes a rectangular slide 701, a rectangular slider 702, a limiting slider 703, a sliding block 704, a concave limiting block 705, a square sliding column 706 and a locking strip 707. The rectangular slide 701 is fixedly mounted on the mounting plate 105, and the rectangular slide 701 is slidably connected to the inside of the rectangular slide 702. A rectangular sliding opening is provided on one side of the rectangular slide 701, and a concave limiting block 705 is fixedly connected to one side of the rectangular slide 701; the limiting slider 703 is fixedly connected to the rectangular sliding opening provided on the rectangular slide 701, and the limiting slider 703 is slidably connected to the rectangular sliding opening; the limiting slider 703 is fixedly connected to the square sliding column 706, and the square sliding column 706 slides outside It is dynamically connected with a sliding block 704, and a handle is fixedly connected to the sliding block 704. A circular limit plate is provided at the other end of the square sliding column 706, and a spring is sleeved on the outside of the square sliding column 706 between the circular limit plate and the sliding block 704; two locking strips 707 are provided at the head end of the rectangular slider 702, and a spring is installed inside the rectangular slide cylinder 701 at the tail end of the rectangular slider 702; when the locking mechanism 7 is in the locking limit state, the two locking strips 707 are in close contact with the outer peripheral surface of the locking gear 601; through the cooperation between the locking gear 601 and the locking mechanism 7, the loosening of the fixing bolt 6 is effectively avoided, thereby avoiding the phenomenon of the lower die 3 and the upper die 4 in this stamping die being offset during the stamping process.

[0026] Example 2, based on Example 1, Figure 1 、 Figure 9 、 Figure 10 and Figure 11 As shown, the one-way limiting mechanism 8 includes a frame 801, a rectangular sliding block 802, a plug-in block 803, an L-shaped pull rod 804 and a limiting plate 805. The frame 801 of the four lower one-way limiting mechanisms 8 is fixedly mounted on the outside of the lower support body 101, and the frame 801 of the four upper one-way limiting mechanisms 8 is fixedly mounted on the outside of the upper support body 102. The rectangular sliding block 802 is slidably connected to the inside of the frame 801, and the end face of the rectangular sliding block 802 is provided with a plug-in block 803 that passes through the head of the frame 801, and the corners on one side of the end face of the plug-in block 803 are set as chamfers; the rectangular sliding block 80 2 The tail end face is rotatably connected with an L-shaped pulling rod 804, and the outside of the L-shaped pulling rod 804 is located inside the frame 801 and is provided with a spring; the tail end face of the frame 801 is provided with a limiting plate 805, and the tail end of the limiting plate 805 is provided with a notch; when the one-way limiting mechanism 8 is in the limited state, the plug-in block 803 is plugged into the rectangular plug-in groove 507; through the cooperation of the rectangular plug-in groove 507 and the one-way limiting mechanism 8, when the rotating block 2 is clamped and fixed, the driving blocks 502 on the left and right sides can no longer move outward, thereby improving the reliability of the clamping and fixing mechanism 5 when clamping and fixing the rotating block 2.

[0027] After the cam 708 is in the unlock state, the locking bar 707 is locked and the locking cam 708 is in the unlock state, and the locking cam 708 is locked in the unlock state.

[0028] During the stamping process, the workpiece can be stamped by moving the upper support body 102 and the upper die 4 downward quickly through the slider of the press.

[0029] When the stamping die needs to be replaced, first manually pull the L-shaped pull rod 804 toward its tail end, and then the rectangular sliding block 802 and the plug-in block 803 can be moved toward the tail end of the L-shaped pull rod 804, so that the plug-in block 803 is pulled out from the rectangular plug-in slot 507. Then, a clamping screw 501 in a clamping and fixing mechanism 5 at the lower part is rotated, and then the other clamping screw 501 is rotated synchronously with the cooperation of the sprocket 503 and the chain, and then the left and right driving blocks 502 are locked in the clamping screw 501. Under the action of the upper reverse thread, they move outward at the same time, thereby causing the lower rotating block 2 to lose its clamping and fixing effect. At this time, the lower rotating block 2 is rotated to realize the switching of the four lower molds 3. The four upper molds 4 can be switched according to the same operation as above. After the lower mold 3 and the corresponding upper mold 4 are switched, it is only necessary to rotate the clamping screw 501 in the reverse direction to make the left and right side driving blocks 502 move inward at the same time under the action of the reverse thread on the clamping screw 501, thereby clamping and fixing the rotating block 2, thereby completing the replacement work of this stamping mold.

[0030] When the rotating block 2 is clamped and fixed, by inserting the plug-in block 803 into the rectangular plug-in slot 507, the driving blocks 502 on the left and right sides can no longer move outward, thereby improving the reliability of the clamping and fixing mechanism 5 when clamping and fixing the rotating block 2.

[0031] In this article, there are several points to note: 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0032] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0033] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A combined stamping die, comprising: A support component (1); two rotating blocks (2) are rotatably connected to the support component (1), and the upper end surface of a lower rotating block (2) is provided with four lower molds (3) in a ring array, and the bottom end surface of an upper rotating block (2) is provided with four upper molds (4) in a ring array; it is characterized in that two clamping fixing mechanisms (5) are provided on the support component (1), and eight fixing bolts (6) are movably inserted on the support component (1), and each fixing bolt (6) is fixedly connected to a locking gear (601); eight locking mechanisms (7) are installed on the support component (1), and eight one-way limit mechanisms (8) are provided on the support component (1).

2. The combined stamping die according to claim 1, characterized in that: The support component (1) comprises a lower support body (101), an upper support body (102), a guide slide (103), a guide slide cylinder (104), a mounting plate (105), a blanking opening (106), a rectangular opening (107), a circular through hole (108) and a T-shaped connecting groove (109), wherein the four corners of the upper end surface of the lower support body (101) are fixedly connected to a guide slide (103), the four corners of the upper support body (102) are fixedly connected to a guide slide cylinder (104), and the four guide slide cylinders (10 4) Slidingly connected with four guide slides (103); two mounting plates (105) are provided on the front and rear sides of the lower support body (101) and the upper support body (102), and a blanking opening (106) is provided in the middle of the front side of the bottom end face of the lower support body (101); two rectangular openings (107) and eight circular through holes (108) are provided on the left end faces of the lower support body (101) and the upper support body (102), and a T-shaped connecting groove (109) is provided in the middle of the opposite faces of the lower support body (101) and the upper support body (102).

3. The combined stamping die according to claim 2, characterized in that: A T-shaped connecting block (201) is fixedly connected to the middle of the opposite back surfaces of the two rotating blocks (2); T-shaped connecting grooves (109) provided on the opposite surfaces of the lower support body (101) and the upper support body (102) are rotatably connected to the T-shaped connecting blocks (201) on the two rotating blocks (2); and four rectangular feed openings are provided on the bottom end surface of the lower rotating block (2) in a circular array.

4. The combined stamping die according to claim 2, characterized in that: The clamping and fixing mechanism (5) comprises a clamping screw (501), a driving block (502), a sprocket (503), a rotating hand wheel (504), a sliding rod (505), a clamping block (506) and a rectangular plug-in slot (507), wherein the number of the clamping screws (501) is two, the two clamping screws (501) in the upper clamping and fixing mechanism (5) are rotatably connected to the inside of two rectangular through-holes (107) opened on the upper support body (102), and the two clamping screws (501) in the lower clamping and fixing mechanism (5) are rotatably connected to the inside of two rectangular through-holes (107) opened on the lower support body (101); the outside of each clamping screw (501) is symmetrically provided with two reverse threads, and each clamping screw (501) is symmetrically provided with two reverse threads. The rod (501) is externally connected to two driving blocks (502) via two reverse threaded connections. Each driving block (502) is provided with a clamping block (506). A sprocket (503) is fixedly installed on the left and right sides of each clamping screw (501), and each two adjacent sprockets (503) are connected via a chain transmission. A rotating handwheel (504) is provided at the left and right ends of each clamping screw (501), and each rotating handwheel (504) is provided with a hexagonal groove. Four sliding rods (505) are fixedly connected to each of the driving blocks (502), and the sliding rods (505) can be slidably connected to the circular through hole (108). A rectangular plug-in slot (507) is provided on each of the driving blocks (502).

5. The combined stamping die according to claim 1, characterized in that: The locking mechanism (7) comprises a rectangular slide (701), a rectangular slider (702), a limiting slider (703), a sliding block (704), a concave limiting block (705), a square sliding column (706) and a locking strip (707), wherein the rectangular slide (701) is fixedly mounted on the mounting plate (105), and the rectangular slide (702) is slidably connected to the inside of the rectangular slide (701), a rectangular sliding opening is provided on one side of the rectangular slide (701), and the concave limiting block (705) is fixedly connected to one side of the rectangular slide (701); the limiting slider (703) is fixedly connected to the rectangular slider (702), and the limiting slider ( 703) is slidably connected to a rectangular sliding opening on the rectangular slide cylinder (701); a square sliding column (706) is fixedly connected to the limiting slider (703), and the outside of the square sliding column (706) is slidably connected to a sliding block (704), and a handle is fixedly connected to the sliding block (704), and the other end of the square sliding column (706) is provided with a circular limiting plate, and the outside of the square sliding column (706) is provided with a spring between the circular limiting plate and the sliding block (704); two locking strips (707) are provided at the head end of the rectangular slider (702), and a spring is installed inside the rectangular slide cylinder (701) at the tail end of the rectangular slider (702).

6. The combined stamping die according to claim 5, characterized in that: When the locking mechanism (7) is in the locking limit state, the two locking strips (707) are in close contact with the outer peripheral surface of the locking gear (601).

7. The combined stamping die according to claim 4, characterized in that: The one-way limiting mechanism (8) comprises a frame (801), a rectangular sliding block (802), a plug-in block (803), an L-shaped pull rod (804) and a limiting plate (805). The frames (801) of the four lower one-way limiting mechanisms (8) are fixedly mounted on the outside of the lower support body (101), and the frames (801) of the four upper one-way limiting mechanisms (8) are fixedly mounted on the outside of the upper support body (102). The rectangular sliding block (802) is slidably connected to the inside of the frame (801). 02), and the head end face of the rectangular sliding block (802) is provided with a plug-in block (803) that penetrates the head of the frame (801), and the corners on one side of the head end face of the plug-in block (803) are set as chamfers; the tail end face of the rectangular sliding block (802) is rotatably connected to an L-shaped pull rod (804), and the outside of the L-shaped pull rod (804) is located inside the frame (801) and is provided with a spring; the tail end face of the frame (801) is provided with a limit plate (805), and a notch groove is opened at the tail end of the limit plate (805).

8. The combined stamping die according to claim 7, characterized in that: When the one-way limiting mechanism (8) is in the limiting state, the plug-in block (803) is plugged into the rectangular plug-in slot (507).

9. The combined stamping die according to claim 4, characterized in that: When the clamping and fixing mechanism (5) is in the clamping and fixing state, the clamping blocks (506) on the left and right sides are in close contact with the left and right end surfaces of the rotating block (2), respectively.

Images