A rotary stamping die

Abstract

This invention discloses a rotary stamping die, comprising a lower die, an upper die, and a rotating mechanism. Both the lower and upper dies have corresponding openings to form tearing openings on the workpiece. The rotating mechanism includes a ratchet ring for driving the workpiece, a slide rail seat with a slide rail, a pawl slide seat slidably connected to the slide rail, a pawl for driving the ratchet ring to rotate, and a side pressure rod for contacting and driving the pawl slide seat to move. The slide rail seat has a reset element for resetting the pawl slide seat, and the pawl slide seat has a pawl groove for mounting the pawl and an elastic element for ejecting the pawl. This invention features a simple structure, low processing difficulty, and strong applicability.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and more particularly to a rotary stamping die. Background Art

[0002] When processing workpieces with multiple tear marks, especially those with densely distributed tear marks, one-time forming molds not only have high requirements for the molds but also have extremely high manufacturing costs and short service life.

[0003] On the other hand, different processing requirements for the specifications and quantity of tear marks necessitate the replacement of corresponding molds, resulting in high production costs and poor applicability for this type of workpiece. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a rotary stamping die that has a simple structure, low processing difficulty, and strong applicability.

[0005] To solve the above-mentioned technical problems, the present invention provides a rotary stamping die, including a lower die, an upper die driven to rise and fall, and a rotating mechanism for rotating a workpiece on the lower die. The lower die and the upper die are both provided with corresponding openings to form a tear on the workpiece.

[0006] The rotating mechanism includes a ratchet ring for driving the workpiece, a slide rail seat with a slide rail, a pawl slide seat slidably connected to the slide rail, a pawl for driving the ratchet ring to rotate, and a side pressure rod for contacting and driving the pawl slide seat to move.

[0007] The slide rail seat is provided with a reset member for resetting the pawl slide seat, and the pawl slide seat is provided with a pawl groove for mounting the pawl and an elastic member for ejecting the pawl;

[0008] The pawl contacts the ratchet ring via the elastic element. The side pressure rod is located on the upper mold and moves laterally by pushing the pawl slide a preset distance as the upper mold moves. The pawl moves with the pawl slide and drives the ratchet ring to rotate a preset angle.

[0009] As an improvement to the above solution, the side pressure rod includes a rod body connected to the upper mold and a drive head for contacting and driving the pawl slide. Both the drive head and the pawl slide have corresponding inclined surfaces.

[0010] As an improvement to the above solution, a positioning ring adapted to the ratchet ring is also included. The positioning ring is connected to the ratchet ring to rotate synchronously with the ratchet ring.

[0011] The positioning ring is provided with a positioning guide, and the upper mold is provided with a positioning post that is adapted to the positioning guide.

[0012] As an improvement to the above solution, both the port of the positioning guide and the end of the positioning post are provided with mutually compatible guide slopes.

[0013] As an improvement to the above solution, the positioning ring is provided with a positioning part for driving the workpiece, so as to adapt to the positioning notch of the workpiece.

[0014] As an improvement to the above solution, the lower mold includes a lower mold base and a bottom mold for shaping the workpiece, and the upper mold includes an upper mold base and a top mold adapted to the bottom mold.

[0015] The bottom mold and the top mold are respectively located on the lower mold and the upper mold, and are arranged correspondingly to each other.

[0016] The ratchet ring is fitted onto the bottom mold to rotate around it.

[0017] As an improvement to the above solution, both the bottom mold and the top mold are provided with corresponding mounting holes for mounting the opening component.

[0018] As an improvement to the above solution, the top die and / or bottom die are provided with an annular stamping track to provide stamping space for the formation of the tear, and the mounting holes are distributed on the annular stamping track.

[0019] As an improvement to the above solution, the lower mold base includes a lifting guide hole for limiting the lifting of the bottom mold and a lifting mechanism for lifting the bottom mold, and the bottom mold is provided with a lifting guide column that matches the lifting guide hole.

[0020] As an improvement to the above solution, the slide rail seat is located on one side of the lower mold, and the slide rail seat is provided with a side groove for accommodating the pawl slide. The side groove and the side wall of the lower mold are closed to form a directional sliding groove for limiting the stroke of the pawl slide.

[0021] Implementing this invention has the following beneficial effects:

[0022] This invention discloses a rotary stamping die, including a lower die, an upper die that is driven to rise and fall, and a rotating mechanism for rotating a workpiece on the lower die. The lower die and the upper die are each provided with corresponding openings, so that when the lower die and the upper die are closed, the openings stamp the workpiece to form a tear.

[0023] The rotating mechanism includes a ratchet ring for driving the workpiece, a slide rail seat with a slide rail, a pawl slide seat, a pawl for driving the ratchet ring to rotate, and a side pressure rod.

[0024] Furthermore, the slide rail seat is provided with a reset member for resetting the pawl slide seat, and the pawl slide seat is provided with a pawl groove for mounting the pawl and an elastic member for ejecting the pawl. Therefore, the pawl contacts the ratchet ring through the elastic member, and by utilizing the unidirectional motion principle between the ratchet and the pawl, the pawl moves with the pawl slide seat and drives the ratchet ring to rotate, thereby eliminating the need for the mold to have multiple openings or openings for forming tearing openings, thus simplifying the design and manufacturing requirements of the mold.

[0025] The side pressure rod is mounted on the upper mold and moves laterally to push the pawl slide a preset distance as the upper mold moves, thereby stably driving the ratchet ring to rotate a preset angle. At the same time, it can also perfectly coordinate with the opening and closing motion and rhythm of the upper mold to drive the workpiece to rotate. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the rotary stamping die of the present invention;

[0027] Figure 2 This is an exploded view of the rotary stamping die of the present invention;

[0028] Figure 3 This is a schematic diagram of the rotating mechanism of the present invention;

[0029] Figure 4 This is a cross-sectional view of the rotary stamping die of the present invention;

[0030] Figure 5 This is a schematic diagram of the top mold structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the workpiece structure applicable to this invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See Figure 1 , 2 According to embodiments 3 and 6, this invention provides a rotary stamping die, including a lower die, an upper die that is driven to rise and fall, and a rotating mechanism 1 for rotating a workpiece A on the lower die. Both the lower die and the upper die are provided with corresponding openings 2 to form a tear B on the workpiece.

[0034] The rotating mechanism 1 includes a ratchet ring 11 for driving the workpiece, a slide rail seat 12 with a slide rail 13, a pawl slide seat 14 slidably connected to the slide rail 13, a pawl 15 for driving the ratchet ring 11 to rotate, and a side pressure rod 16 for contacting and driving the pawl slide seat 14 to move.

[0035] The slide rail seat 12 is provided with a reset member 121 for resetting the pawl slide seat 14, and the pawl slide seat 14 is provided with a pawl groove 141 for mounting the pawl 15 and an elastic member 142 for ejecting the pawl 15.

[0036] The pawl 15 contacts the ratchet ring 11 through the elastic element 142. The side pressure rod 16 is provided on the upper mold to move the pawl slide 14 laterally a preset distance as the upper mold moves. The pawl 15 moves with the pawl slide 14 and drives the ratchet ring 11 to rotate a preset angle.

[0037] Specifically, the lower mold includes a lower mold base 3 and a bottom mold 31 for shaping the workpiece, and the upper mold includes an upper mold base 4 and a top mold 41 adapted to the bottom mold 31; the bottom mold 31 and the top mold 41 are respectively disposed on the lower mold base 3 and the upper mold base 4, and are arranged correspondingly to each other. The ratchet ring 11 is sleeved on the bottom mold 31 to rotate around the bottom mold 31.

[0038] The contact and closure of the bottom mold 31 allows for the stamping and shaping of the main body of the workpiece, while the opening 2 will also press out an upward-curving tear on the workpiece. The opening 2 is a columnar body with a pointed stamping end.

[0039] The side pressure rod 16 includes a rod body 161 connected to the upper mold base 4 and a drive head 162 for contacting and driving the pawl slide 14. Both the drive head 162 and the pawl slide 14 have corresponding inclined surfaces 1a. The inclined surfaces 1a allow the downward pressure of the side pressure rod 16 to be converted into a pushing force for the pawl slide 14 to move along the slide rail 13 when the inclined surfaces of the drive head 162 and the pawl slide 14 come into contact with each other. One end of the pawl slide 14 has a slot 143 for the drive head 162 to be inserted into, and the inclined surface of the pawl slide 14 is located on the inner wall of the slot 143. Correspondingly, the reset component 121 solves the problem of resetting the pawl slide 14 after the side pressure rod 16 is raised. The reset component 121 can be a spring, elastic sleeve, etc., sleeved on the slide rail 13. The elastic element 142 used to eject the pawl 15 is preferably a spring or a rubber part with large elastic deformation. The elastic element 142 is provided so that the pawl 15 can be squeezed and compressed into the pawl groove 141 when the pawl 15 does not need to drive the ratchet ring 11.

[0040] Furthermore, to ensure the processing accuracy of the tear and avoid the cumulative processing error after the rotating mechanism 1 has been operating for a long time, the present invention also includes a positioning ring 5 adapted to the ratchet ring 11. The positioning ring 5 is connected to the ratchet ring 11 to rotate synchronously with the ratchet ring 11. The positioning ring 5 is provided with a positioning guide 51, and the upper mold is provided with a positioning post 42 adapted to the positioning guide 51. The port of the positioning guide 51 and the end of the positioning post 42 are both provided with mutually adapted guide slopes. Preferably, the port of the positioning guide 51 is provided with an inner chamfer, and the end of the positioning post 42 is frustum-shaped to form the guide slopes respectively. Therefore, when the ratchet ring 11 is driven to rotate by the pawl 15, the rotation angle of the ratchet ring 11 will deviate very slightly from the preset rotation angle due to factors such as inertia. Thus, the positioning pin 42 can correct this deviation during each opening and closing process between the upper and lower molds, i.e., each time the pawl 15 drives the ratchet ring 11 to rotate. If the rotation of the ratchet ring 11 deviates, the positioning pin 42 and the positioning guide 51 will misalign, and the guide inclined surface will guide the positioning pin and the positioning guide 51 to coincide, thereby correcting the rotational deviation error of the ratchet ring 11. The positioning ring 5 is provided with a positioning part 52 for driving the workpiece, adapting to the positioning notch of the workpiece to determine the initial processing position of the workpiece.

[0041] See Figure 4 and Figure 5 Because the tearing process of the workpiece requires simultaneous rotation and stamping, to avoid affecting the already processed tear, both the bottom die 31 and the top die 41 are provided with corresponding mounting holes 6 for mounting the opening 2. The top die 41 and / or the bottom die are provided with an annular stamping track 7 to provide stamping space for the formation of the tear, and the mounting holes 6 are distributed on the annular stamping track 7. The annular stamping track 7 helps to protect the tear from contact and stamping by the top die 41.

[0042] The lower mold base 3 contains a lifting guide hole 32 for limiting the lifting and lowering of the bottom mold 31 and a lifting mechanism for lifting the bottom mold 31. The bottom mold 31 is provided with a lifting guide post 33 that matches the lifting guide hole 32. Therefore, after the workpiece is processed, it can be lifted by the lifting mechanism to facilitate the removal of the workpiece by a worker or robot. The lifting mechanism is a pneumatic telescopic rod mechanism, an electric push rod, or a hydraulic telescopic rod, etc., which are existing technologies. The lower mold base 3 is correspondingly provided with a lifting mounting hole for installing the lifting mechanism.

[0043] To facilitate maintenance and disassembly of the rotating mechanism 1, the slide rail seat 12 is located on one side of the lower mold. The slide rail seat 12 has a side groove 122 for accommodating the pawl slide 14. The side groove 122 closes with the side wall of the lower mold to form a directional sliding groove that limits the stroke of the pawl slide 14. Therefore, the pawl slide 14 can be disassembled simply by removing the slide rail seat 12.

[0044] The upper mold base 4 and the lower mold base 3 are provided with a main lifting guide column 91 for lifting and resetting and a main reset spring 92 for resetting, and the main reset spring 92 is sandwiched between the upper mold base 4 and the lower mold base 3.

[0045] In order to better stabilize the opening and closing movement between the upper mold and the lower mold, an auxiliary guide post 8 is provided between the upper mold base 4 and the lower mold base 3.

[0046] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A rotary stamping die, characterized in that, It includes a lower mold, a driven and lifted upper mold, a positioning ring, and a rotating mechanism for rotating the workpiece on the lower mold. Both the lower mold and the upper mold are provided with corresponding openings to form a tear in the workpiece. The rotating mechanism includes a ratchet ring for driving the workpiece, a slide rail seat with a slide rail, a pawl slide seat slidably connected to the slide rail, a pawl for driving the ratchet ring to rotate, and a side pressure rod for contacting and driving the pawl slide seat to move. The slide rail seat is provided with a reset member for resetting the pawl slide seat, and the pawl slide seat is provided with a pawl groove for mounting the pawl and an elastic member for ejecting the pawl; The pawl contacts the ratchet ring through the elastic element. The side pressure rod is provided on the upper mold so as to move the pawl slide by a preset distance as the upper mold moves. The pawl moves with the pawl slide and drives the ratchet ring to rotate by a preset angle. The positioning ring is adapted to the ratchet ring, and the positioning ring is connected to the ratchet ring so as to rotate synchronously with the ratchet ring; The positioning ring is provided with a positioning guide, and the upper mold is provided with a positioning post that is adapted to the positioning guide.

2. The rotary stamping die as described in claim 1, characterized in that, The side pressure rod includes a rod body connected to the upper mold and a drive head for contacting and driving the pawl slide. Both the drive head and the pawl slide have corresponding inclined surfaces.

3. The rotary stamping die as described in claim 1, characterized in that, Both the port of the positioning guide and the end of the positioning post are provided with mutually compatible guide slopes.

4. The rotary stamping die as described in claim 1, characterized in that, The positioning ring is provided with a positioning part for driving the workpiece to fit the positioning notch of the workpiece.

5. The rotary stamping die as described in claim 1, characterized in that, The lower mold includes a lower mold base and a bottom mold for shaping the workpiece; the upper mold includes an upper mold base and a top mold adapted to the bottom mold. The bottom mold and the top mold are respectively disposed on the lower mold and the upper mold, and are arranged correspondingly to each other; The ratchet ring is fitted onto the bottom mold to rotate around it.

6. The rotary stamping die as described in claim 5, characterized in that, Both the bottom mold and the top mold are provided with corresponding mounting holes for mounting the opening component.

7. The rotary stamping die as described in claim 6, characterized in that, The top mold and / or bottom mold are provided with an annular stamping track to provide stamping space for the formation of the tear, and the mounting holes are distributed on the annular stamping track.

8. The rotary stamping die as described in claim 5, characterized in that, The lower mold base contains a lifting guide hole for limiting the lifting and lowering of the bottom mold and a lifting mechanism for lifting the bottom mold. The bottom mold is provided with a lifting guide column that is adapted to the lifting guide hole.

9. The rotary stamping die as described in claim 1, characterized in that, The slide rail seat is located on one side of the lower mold. The slide rail seat has a side groove for accommodating the pawl slide. The side groove and the side wall of the lower mold are closed to form a directional sliding groove for limiting the stroke of the pawl slide.

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