A split multi-station die drawing device and its drawing method

Abstract

The present invention relates to the technical field of stamping dies, and discloses a split multi-station die drawing device and a drawing method thereof. Among them, a split multi-station die drawing device includes a driver, and further includes a press machine slidably connected inside the driver, a plurality of bottom dies arranged equidistantly and connected inside the driver, and a push rod slidably connected inside an I-shaped sleeve. A workpiece is placed on the top of the I-shaped sleeve. When the pressing die moves from the initial position to the set position, the positioning member and the positioning block are pushed by a circular pressing rod to position the inside and outside of the workpiece. When the pressing die reaches the processing position, the workpiece is released from positioning. When the press machine moves downward, it drives the circular pressing rod to extrude the positioning member, so that the positioning member cooperates with the positioning block under the guidance of the guiding frame, ensuring that the workpiece is always in the correct processing position, ensuring the stability of the workpiece during the processing process, greatly improving the processing accuracy of the workpiece, and avoiding problems such as uneven wall thickness and inconsistent stretching deformation caused by workpiece displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping dies, and in particular to a split multi-station die drawing device and a drawing method thereof. Background Art

[0002] The multi-station die drawing device is equivalent to a combination of multiple dies and multiple presses. It is a unit in a multi-station stamping production line, and the multi-station stamping production line is an integration of multi-station dies, a quick die change system, a loading system, a feeding system, an electrical control and a network control system. The multi-station stamping production line can continuously stretch the workpiece through the press and the die, and at the same time, cooperate with the manipulator of the feeding system to transfer the workpiece between stations, that is, work with continuous strokes, replacing the single-machine single-time working mode, and improving the production efficiency.

[0003] However, in the prior art, the position of the manipulator is usually set on both sides of the multi-station die. Its structure is set as an arc-shaped piece. During work, two such arc-shaped pieces squeeze and grab the cylindrical workpiece in the middle from both sides, and then, driven by the mechanical structure, move back and forth on the guide rail to achieve the displacement transfer of the workpiece between different stations. However, when the equipment is in the working state, mechanical vibrations will occur. At the same time, during the process of the manipulator quickly grabbing and transferring the workpiece, due to the change in its own movement speed, inertia will be generated, making the originally grabbed workpiece extremely prone to offset during the transfer and placement process, resulting in uneven wall thickness stretching after stamping and stretching processing in the die later, causing unqualified product quality, and easily directly damaging the workpiece during the stretching process. Therefore, currently, a circular convex ring is set on the top of the die to limit the workpiece. Using its annular structure, after the workpiece is transferred, it restricts the workpiece from the inside, thus effectively avoiding the offset of the workpiece due to equipment vibration and the movement inertia of the manipulator, reducing the probability of workpiece offset. However, in the actual large-scale processing process, as the number of processing times increases, the workpiece will frequently collide with the circular convex ring during the transfer and stretching process. At the same time, the upper pressing die will also continuously collide and rub against the circular convex ring during the working process. This continuous collision and friction cause great damage to the material and structure of the circular convex ring, making the circular convex ring extremely prone to wear and surface unevenness, unable to effectively position the workpiece, and the workpiece will still offset during the transfer, seriously affecting the processing effect of the workpiece, easily affecting the processing effect of the workpiece, resulting in an increase in the defective rate of the product, increasing the production cost and production cycle, and the sizes of the workpieces at different stations are different, and thus the required driving lengths are also different. Therefore, each station requires a different driving source, which is difficult to apply. At the same time, the existing positioning structure needs to be located around the workpiece, which will seriously affect the displacement work of the manipulator.

[0004] For this reason, a split multi-station die drawing device and a drawing method thereof are proposed to avoid workpiece offset and ensure effective stretching of the workpiece. Summary of the Invention

[0005] The purpose of the present invention is to provide a split multi-station die drawing device and a drawing method thereof, which solve the problem that workpieces cannot be effectively limited and offset during mass production.

[0006] On the one hand, the present invention proposes: a split multi-station die drawing device, including a driver, and further including a press slidably connected inside the driver, a plurality of bottom dies arranged equidistantly and connected inside the driver, an I-shaped sleeve fixedly connected to the top of the bottom die, a plurality of guide frames fixedly connected inside the driver, a positioning member slidably connected between two guide frames, an arc-shaped block slidably connected inside the guide frame, a plurality of circular pressing rods connected to the bottom of the press, a compression block, a positioning block and an upward pushing ring slidably connected inside the I-shaped sleeve, a return spring connected between the upward pushing ring and the I-shaped sleeve, a connecting rod connected between the upward pushing ring and the positioning block, and a push rod slidably connected inside the I-shaped sleeve. A workpiece is placed on the top of the I-shaped sleeve. Two guide frames are symmetrically arranged on both sides of the bottom die. A pressing die is arranged at the bottom of the press. The pressing die includes an initial position and a processing position. When the pressing die moves from the initial position to the set position, the positioning member and the positioning block are pushed by the circular pressing rod to position the inside and outside of the workpiece. When the pressing die reaches the processing position, the workpiece is released from positioning.

[0007] Further, the guide frame includes a support frame fixedly connected to the top of the driver, a limiting plate fixedly connected to one side of the support frame, and a guide plate fixedly connected to the top of the support frame. The guide plate is provided with a guide slot and a limiting slot. The guide slot is divided into an inclined section and a horizontal section.

[0008] Further, when the pressing die is in the initial position, the positioning member is located below the workpiece. The positioning member includes a round shaft slidably connected inside the guide slot, two positioning frames fixedly connected to the top of the round shaft, a positioning wheel rotatably connected to one end of the positioning frame, only one arc-shaped pressing rod connected to one side of the positioning frame, and two square blocks respectively clamped at both ends of the round shaft. The arc-shaped pressing rod is located on the side of the positioning frame close to the compression block.

[0009] Further, the bottom die includes a support sleeve fixedly connected to the top of the driver, a telescopic sleeve slidably connected to the outside of the support sleeve, and an inner die fixedly connected inside the driver. The I-shaped sleeve is fixedly connected to the top of the telescopic sleeve.

[0010] Further, a square slot is opened inside the arc-shaped block. A strong spring is connected between the arc-shaped block and the guide plate. A limiting strip is fixedly connected to the bottom of the square slot. The limiting strip is located inside the limiting slot. The square block is located inside the square slot.

[0011] Further, circular pressure rods are provided on both sides of the I-shaped sleeve. The circular pressure rod includes a straight rod clamped with the driver, two spring telescopic rods connected to the bottom of the straight rod, and an inclined arc rod connected to the two spring telescopic rods. The inclined arc rod is located directly above the arc-shaped block. The bottom of the inclined arc rod close to the limiting plate is an arc surface. When the pressing die is in the initial position, the distance between the inclined arc rod and the arc-shaped block is always smaller than the distance between the pressing die and the workpiece.

[0012] Further, the positioning block slides horizontally, the pressed block slides vertically, and two arc-shaped strips are provided on the outside of the upward pushing ring. The push rod always fits against the arc-shaped strips.

[0013] Further, the pressed block includes a pressed strip slidably connected inside the I-shaped sleeve, a cylinder fixedly connected to the bottom of the pressed strip, and a return spring connecting the cylinder and the I-shaped sleeve. The top of the pressed strip extends above the I-shaped sleeve.

[0014] Further, a plurality of through grooves are provided at the top of the I-shaped sleeve. The positioning block is located inside the through grooves. Two sliding rods are provided inside the I-shaped sleeve. The pressed block and the push rod are both slidably connected to the outside of the sliding rods. The number of the through grooves, the positioning blocks, and the connecting rods is equal.

[0015] On the other hand, the present invention provides a drawing method for a split multi-station die drawing device, including the following steps:

[0016] Preparation work: Select the pressing die and the bottom die according to the workpiece and install and debug them. Check the equipment, set parameters, and feed the workpiece to the bottom die through the feeding system.

[0017] Equipment startup and positioning: The press is started, the circular pressure rod pushes the arc-shaped block, and the positioning part cooperates with the positioning block under the guidance of the guiding frame to complete the internal and external positioning of the workpiece.

[0018] Drawing process: The press drives the pressing die to apply pressure, and the workpiece deforms according to the shape of the bottom die, and the pressure is controlled to ensure normal drawing.

[0019] Processing completion and unloading: The press moves back, and the robotic arm transfers the workpiece.

[0020] The beneficial effects of the present invention:

[0021] When the press moves downward, it drives a circular pressure rod to extrude the positioning part, so that the positioning part cooperates with the positioning block under the guidance of the guide frame, effectively positioning the inside and outside of the workpiece, further improving the machining accuracy and quality of the workpiece, reducing the defective rate, increasing the production efficiency, continuously dynamically positioning the workpiece, and timely correcting the small offsets caused by equipment vibration or inertia, ensuring that the workpiece is always in the correct machining position, ensuring the stability of the workpiece during the machining process, greatly improving the machining accuracy of the workpiece, and avoiding problems such as uneven wall thickness and inconsistent stretching deformation caused by workpiece displacement.

[0022] When the press moves downward, it drives a circular pressure rod to accurately press on the arc-shaped block. The arc-shaped block is deflected under pressure and pushes the positioning part to move under the guidance of the guide frame, thereby positioning the workpiece. And only by adjusting the circular pressure rod to change the contact point of the relative position between the circular pressure rod and the arc-shaped block can the positioning of workpieces of different sizes be continuously carried out, ensuring that the workpiece is always in the correct machining position, which guarantees the stability of workpieces of different sizes during machining and avoids problems such as uneven wall thickness and inconsistent stretching deformation caused by displacement.

[0023] Just connect the circular pressure rod to the bottom of the press to achieve power transmission, thus quickly completing the installation and integration of the structure. At the same time, placing the positioning part below the workpiece can effectively avoid affecting the displacement work and does not affect the normal operation of the equipment, shortening the equipment transformation cycle, enabling the enterprise to put the equipment into a new production process in a short time. Each time the press moves downward, the circular pressure rod can quickly respond, press on the arc-shaped block, complete the workpiece positioning, and can quickly enter production, enhancing the flexibility and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the first perspective of the present invention;

[0025] Figure 2 It is a structure schematic diagram of the bottom die of the present invention;

[0026] Figure 3 It is a structure schematic diagram of the arc-shaped block of the present invention;

[0027] Figure 4 It is a top view of the bottom die of the present invention;

[0028] Figure 5 It is of the present invention Figure 4 Cross-sectional view at A-A in;

[0029] Figure 6 It is of the present invention Figure 5 Enlarged schematic diagram at B in;

[0030] Figure 7 It is a structure schematic diagram of the guide frame of the present invention;

[0031] Figure 8 Schematic structural diagram of the positioning member of the present invention;

[0032] Figure 9 Cross-sectional view of the I-shaped sleeve of the present invention;

[0033] Figure 10 Schematic structural diagram of the upward pushing ring of the present invention;

[0034] Figure 11 Front view of the driver of the present invention.

[0035] In the figure:

[0036] 1. Driver; 2. Press; 21. Die; 3. Bottom die; 31. Support sleeve; 32. Telescopic sleeve; 33. Inner die; 4. I-shaped sleeve; 41. Through groove; 42. Slide bar; 5. Guide frame; 51. Support frame; 52. Limit plate; 53. Guide plate; 531. Guide groove opening; 5311. Inclined section; 5312. Horizontal section; 532. Limit groove opening; 6. Positioning member; 61. Round shaft; 62. Positioning frame; 63. Positioning wheel; 64. Arc-shaped pressing rod; 65. Square block; 7. Arc-shaped block; 71. Square groove opening; 72. Strong spring; 73. Limit bar; 8. Round pressing rod; 81. Straight rod; 82. Spring telescopic rod; 83. Inclined arc rod; 9. Compressed block; 91. Compressed strip; 92. Cylinder; 93. Return spring; 10. Positioning block; 11. Upward pushing ring; 111. Arc-shaped strip; 12. Return spring; 13. Link; 14. Push rod; 15. Workpiece. Specific embodiments

[0037] To make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0038] Example 1, referring to Figures 1-11, which is the first embodiment of the present invention, provides a split multi-station die drawing device, including a driver 1, and further including a press 2 slidably connected inside the driver 1, a plurality of bottom dies 3 arranged at equal intervals and connected inside the driver 1, an I-shaped sleeve 4 fixedly connected to the top of the bottom die 3, a plurality of guide frames 5 fixedly connected inside the driver 1, a positioning member 6 slidably connected between the two guide frames 5, an arc-shaped block 7 slidably connected inside the guide frame 5, a plurality of circular pressure rods 8 connected to the bottom of the press 2, a pressure-receiving block 9, a positioning block 10 and an upward-pushing ring 11 slidably connected inside the I-shaped sleeve 4, a return spring 12 connected between the upward-pushing ring 11 and the I-shaped sleeve 4, a connecting rod 13 connected between the upward-pushing ring 11 and the positioning block 10, and a push rod 14 slidably connected inside the I-shaped sleeve 4. A workpiece 15 is placed on the top of the I-shaped sleeve 4. Two guide frames 5 are symmetrically arranged on both sides of the bottom die 3. A pressing die 21 is arranged at the bottom of the press 2. The pressing die 21 includes an initial position and a processing position. When the pressing die 21 moves from the initial position to the set position, the positioning member 6 and the positioning block 10 are pushed by the circular pressure rod 8 to position the inside and outside of the workpiece 15. When the pressing die 21 reaches the processing position, the workpiece 15 is de-positioned, that is, when the pressing die 21 reaches the processing position, the workpiece 15 is de-positioned. At this time, the press 2 can constrain the workpiece 15. The design of de-positioning during processing avoids the positioning member 6 and the positioning block 10 from interfering with the workpiece 15 any more, ensuring the smooth progress of processing.

[0039] Specifically, when the pressing die 21 contacts the workpiece 15, the pressing die 21 reaches the processing position, and the guide frame 5 plays a guiding role. During the operation of the device, the positioning member 6 and the arc-shaped block 7 need to move precisely under the constraint of the guide frame 5 to ensure the accuracy of the movement of each component, thereby ensuring the accurate positioning of the workpiece 15.

[0040] In addition, compared with the traditional circular convex ring positioning method, the positioning block 10 not only positions more precisely from the inside of the workpiece 15, but also because the positioning block 10 only contacts the workpiece 15 briefly, and the width of the positioning block 10 is small and the contact area between the two is small. At the same time, when the pressing die 21 is in the initial position, the positioning block 10 does not contact the workpiece 15, reducing the loss of the positioning components due to collision and friction, ensuring that the positioning block 10 can always effectively position the workpiece 15 during long-term and large-batch processing.

[0041] Among them, two guide frames 5 are arranged on both sides of a single bottom die 3, so there are a total of four guide frames 5 on both sides of the bottom die 3, two guide frames 5 on one side, and there is a positioning member 6 between the two guide frames 5, and there is an arc-shaped block 7 inside the guide frame 5. Since the upper part of the first bottom die 3 is a circular plate and does not need to be positioned, except for the first bottom die 3, the number and position of the positioning structures on both sides of the remaining bottom dies 3 correspond one by one.

[0042] Refer to Figures 1-7, when the die 21 is in the initial position, the positioning member 6 is located below the workpiece 15, which can not affect the operation of the robotic arm. The guiding frame 5 includes a support frame 51 fixedly connected to the top of the driver 1, a limiting plate 52 fixedly connected to one side of the support frame 51, and a guiding plate 53 fixedly connected to the top of the support frame 51. The guiding plate 53 is provided with a guiding notch 531 and a limiting notch 532. The guiding notch 531 is divided into an inclined section 5311 and a horizontal section 5312. The inclined section 5311 will guide the positioning member 6 to move upward when the positioning member 6 is driven.

[0043] Specifically, the guiding plate 53 can guide the movement trajectories of the positioning member 6 and the arc-shaped block 7. During the process of the press 2 driving the die 21 to move from the initial position to the processing position, under the guidance of the inclined section 5311 of the guiding notch 531, the positioning member 6 moves from below to a position at the same height as the bottom of the workpiece 15 to position the outside of the workpiece 15.

[0044] In addition, the limiting plate 52 can limit the circular pressing rod 8, so that the circular pressing rod 8 moves when it touches the limiting plate 52, and the circular pressing rod 8 no longer extrudes the positioning member 6 and the arc-shaped block 7. Then the positioning member 6 and the arc-shaped block 7 move back. At this time, the positioning member 6 and the arc-shaped block 7 have completed the positioning of the workpiece 15. At the same time, the die 21 also reaches the processing position, and at this time, the positioning member 6 and the arc-shaped block 7 no longer need to be positioned.

[0045] Refer to Figures 1-8 , the positioning member 6 includes a round shaft 61 slidably connected inside the guiding notch 531, two positioning brackets 62 fixedly connected to the top of the round shaft 61, a positioning wheel 63 rotatably connected to one end of the positioning bracket 62, only one arc-shaped pressing rod 64 connected to one side of the positioning bracket 62, and two square blocks 65 respectively clamped at both ends of the round shaft 61. The arc-shaped pressing rod 64 is located on the side of the positioning bracket 62 close to the pressure-receiving block 9, so that the arc-shaped pressing rod 64 can drive the pressure-receiving block 9 when moving, and the positioning block 10 positions the inside and outside of the workpiece 15.

[0046] Specifically, the two square blocks 65 limit the rotation of the round shaft 61, so that the round shaft 61 is always in a single state. Then the positioning wheel 63 is always in a horizontal state, so that the positioning wheel 63 can contact the outer surface of the workpiece 15, ensuring that the workpiece 15 does not shift and is always in the correct processing position. At the same time, since the positioning wheel 63 can rotate freely, when contacting the workpiece 15, it can effectively reduce the resistance generated by friction and avoid scratching the surface of the workpiece 15.

[0047] Refer to Figures 2-5 , the bottom die 3 includes a support sleeve 31 fixedly connected to the top of the driver 1, a telescopic sleeve 32 slidably connected to the outside of the support sleeve 31, an inner die 33 fixedly connected to the inside of the driver 1, and an I-shaped sleeve 4 fixedly connected to the top of the telescopic sleeve 32.

[0048] Specifically, the workpiece 15 is located at the top of the inner mold 33, and the inner mold 33 does not move. After the interior of the workpiece 15 is subjected to the pressure of the die 21, the interior will change to the shape of the inner mold 33, and at the same time, the telescopic sleeve 32 is compressed and moved downward. After the die 21 moves back, the telescopic sleeve 32 moves back to push up the workpiece 15, so that it is shifted by the robot.

[0049] Reference Figures 2-10 A square slot 71 is provided inside the arc block 7, a strong spring 72 is connected between the arc block 7 and the guide plate 53, a limit strip 73 is fixedly connected to the bottom of the square slot 71, the limit strip 73 is located inside the limit strip 532, the limit strip 73 is limited by the limit strip 532, so that the arc block 7 can only move horizontally, the square block 65 is located inside the square slot 71, to prevent the circular shaft 61 from rotating due to its circular shape, and the top of the arc block 7 is arc-shaped, so that the arc block 7 can be compressed.

[0050] Reference Figures 2-10 , circular pressure rods 8 are provided on both sides of the I-shaped sleeve 4, and the circular pressure rods 8 include a straight rod 81 clamped with the driver 1, two spring telescopic rods 82 connected to the bottom of the straight rod 81, and an oblique arc rod 83 connected to the two spring telescopic rods 82. The oblique arc rod 83 is located directly above the arc block 7, and the bottom of the oblique arc rod 83 close to the limit plate 52 is an arc surface. The oblique arc rod 83 moves downward and is blocked by the limit plate 52, and moves to compress the spring telescopic rod 82. At this time, the arc block 7 is reset, and the oblique arc rod 83 is also blocked by the arc block 7 and cannot move back. It can only be reset when the oblique arc rod 83 is not in contact with the arc block 7.

[0051] When the die 21 is in the initial position, the distance between the oblique arc rod 83 and the arc block 7 is always smaller than the distance between the die 21 and the workpiece 15, ensuring that the die 21 does not reach the processing position before contacting the workpiece 15.

[0052] Specifically, by utilizing the pressure of the circular pressure rod 8 as the press 2 presses downwards, the arc-shaped block 7 is pressured and displaced, and thus the arc-shaped block 7 compresses the strong spring 72. When dealing with workpieces 15 of different sizes, it is only necessary to adjust the relative position between the circular pressure rod 8 and the arc-shaped block 7. That is, the descending distance of the inclined arc rod 83 is fixed, and the height position of the limit plate 52 is fixed. When the inclined arc rod 83 contacts the limit plate 52, it will be displaced. At this time, the inclined arc rod 83 can no longer drive the arc-shaped block 7, so the arc-shaped block 7 will not position the workpiece 15 by using the positioning member 6. Therefore, by moving the entire circular pressure rod 8 away from the arc-shaped block 7, the relative position between the two changes, and the contact point between the inclined arc rod 83 and the arc-shaped block 7 will change. It can be understood that when the inclined arc rod 83 originally presses the arc-shaped block 7, the arc-shaped block 7 will move from one end of the inclined arc rod 83 to the other end. At this time, the arc-shaped block 7 moves ten centimeters. However, due to the movement of the inclined arc rod 83, the contact point between the two changes, and the arc-shaped block 7 only contacts the middle of the inclined arc rod 83, resulting in the inclined arc rod 83 only being able to press the arc-shaped block 7 to move eight centimeters. Thus, by adjusting the position of the circular pressure rod 8, it is possible to deal with workpieces 15 of different sizes.

[0053] Refer to Figures 1-11 , the positioning block 10 slides horizontally, the pressure-receiving block 9 slides vertically, and two arc-shaped strips 111 are provided on the outside of the upper push ring 11. The push rod 14 always fits against the arc-shaped strips 111. After the pressure-receiving block 9 is squeezed by the arc-shaped pressure rod 64, the pressure-receiving block 9 will move vertically downwards. The pressure-receiving block 9 will utilize the push rod 14 to cause the bottom of the arc-shaped strip 111 to be pressured, and then the upper push ring 11 moves upwards to drive the connecting rod 13, causing the positioning block 10 to slide to position from inside the workpiece 15.

[0054] Refer to Figures 1-11 , the pressure-receiving block 9 includes a pressure-receiving strip 91 slidably connected inside the I-shaped sleeve 4, a cylinder 92 fixedly connected to the bottom of the pressure-receiving strip 91, and a return spring 93 connecting the cylinder 92 and the I-shaped sleeve 4. The top of the pressure-receiving strip 91 extends above the I-shaped sleeve 4 and can be displaced by being squeezed by the arc-shaped pressure rod 64.

[0055] Refer to Figures 1-11 , a plurality of through grooves 41 are provided at the top of the I-shaped sleeve 4. The positioning block 10 is located inside the through grooves 41. Two sliding rods 42 are provided inside the I-shaped sleeve 4. The pressure-receiving block 9 and the push rod 14 are both slidably connected to the outside of the sliding rods 42. The number of the through grooves 41, the positioning block 10, and the connecting rod 13 is equal.

[0056] The working principle of the present invention is as follows: the press 2 is located inside the driver 1, in the initial position and has not moved, and the die 21 is not in contact with the workpiece 15. At this time, the positioning member 6 is located below the workpiece 15, and does not affect the robot arm to transfer the workpiece 15 to the bottom die 3 on the top of the I-shaped sleeve 4. The workpiece 15 is placed on the top of the inner die 33. The press 2 is started, driving the die 21 to move from the initial position to the processing position. The circular pressure rod 8 is pressed down as a whole with the press 2, and the oblique arc rod 83 first contacts the arc block 7, pushing the arc block 7 to move horizontally, compressing The strong spring 72 drives the arc block 7 to move the round shaft 61 through the square block 65. The round shaft 61 drives the positioning frame 62 to move upward under the guidance of the inclined section 5311 of the guide slot 531. The positioning wheel 63 moves to the same height as the bottom of the workpiece 15. Then the round shaft 61 reaches the horizontal section 5312 of the guide slot 531 to position the outside of the workpiece 15. At the same time, when the round shaft 61 moves, the arc pressure rod 64 squeezes the pressure strip 91, and the pressure strip 91 moves vertically downward, and the cylinder 92 The circular pressure rod 8 moves downward synchronously to compress the return spring 93, and at the same time, the cylinder 92 squeezes the push rod 14, so that the push rod 14 squeezes the bottom of the arc strip 111, so that the upper push ring 11 moves upward, driving the connecting rod 13, so that the positioning block 10 is positioned from the inside of the workpiece 15, and the inside and outside precise positioning of the workpiece 15 is achieved. At this time, because the circular pressure rod 8 moves downward to contact the limit plate 52, it no longer squeezes the arc block 7. The arc block 7 drives the positioning member 6 to move back as a whole under the action of the strong spring 72, and the pressure block 9 also moves back as a whole and no longer positions the workpiece 15 The die 21 is about to reach the processing position to limit the workpiece 15. The positioning block 10 is positioned to constrain the die 21 to punch and stretch the workpiece 15. The workpiece 15 is at the top of the inner die 33 and is deformed according to the shape of the inner die 33 under the action of pressure. At the same time, the telescopic sleeve 32 is compressed and moves downward. After the processing is completed, the press 2 drives the die 21 to move back, and the telescopic sleeve 32 moves back under its own action to push up the workpiece 15, making it convenient for the manipulator to shift the workpiece 15 to proceed to the next process or remove the finished product, thereby repeating this process continuously.

[0057] Example 2, refer to Figures 1-11 , which is a second embodiment of the present invention, provides: a split multi-station die drawing device drawing method, comprising the following steps:

[0058] Preparation: Select the die 21 and the bottom die 3 according to the workpiece 15, install and debug them, check the equipment, set parameters, and load the materials to the bottom die 3 through the loading system.

[0059] Equipment startup and positioning: The press machine 2 is started, the circular pressure rod 8 pushes the arc block 7, and the positioning member 6 cooperates with the positioning block 10 under the guidance of the guide frame 5 to complete the internal and external positioning of the workpiece 15.

[0060] Drawing process: The press machine 2 drives the die 21 to apply pressure, and the workpiece 15 is deformed according to the shape of the bottom die 3. The pressure is controlled to ensure normal drawing.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A split multi-station die drawing device, including a driver, characterized in that: The invention also includes a press slidably connected to the inside of the driver, a plurality of bottom molds equidistantly arranged and connected to the inside of the driver, an I-shaped sleeve fixedly connected to the top of the bottom mold, a plurality of guide frames fixedly connected to the inside of the driver, a positioning piece slidably connected between the two guide frames, an arc block slidably connected to the inside of the guide frame, a plurality of circular pressure rods connected to the bottom of the press, a pressure block, a positioning block and an upper push ring slidably connected to the inside of the I-shaped sleeve, a return spring connected between the upper push ring and the I-shaped sleeve, a connecting rod connected between the upper push ring and the positioning block, and a push rod slidably connected to the inside of the I-shaped sleeve, a workpiece is placed on the top of the I-shaped sleeve, two guide frames are symmetrically arranged on both sides of the bottom mold, a pressing die is arranged at the bottom of the press, the pressing die includes an initial position and a processing position, when the pressing die moves from the initial position to the set position, the positioning piece and the positioning block are pushed by the circular pressure rod to position the workpiece inside and outside, and the workpiece is released when the pressing die reaches the processing position; The guide frame includes a support frame fixedly connected to the top of the driver, a limit plate fixedly connected to one side of the support frame, and a guide plate fixedly connected to the top of the support frame, the guide plate is provided with a guide slot and a limit slot, and the guide slot is divided into an oblique section and a horizontal section; When the die is in the initial position, the positioning member is located below the workpiece, and the positioning member includes a circular shaft slidably connected to the inside of the guide slot, two positioning frames are provided and fixedly connected to the top of the circular shaft, a positioning wheel is rotatably connected to one end of the positioning frame, only one arc-shaped pressure rod is provided and connected to one side of the positioning frame, and two square blocks are respectively clamped at both ends of the circular shaft, and the arc-shaped pressure rod is located on the side of the positioning frame close to the pressure block; The bottom mold comprises a support sleeve fixedly connected to the top of the driver, a telescopic sleeve slidably connected to the outside of the support sleeve, an inner mold fixedly connected to the inside of the driver, and the I-shaped sleeve fixedly connected to the top of the telescopic sleeve.

2. The split multi-station die drawing equipment according to claim 1, characterized in that: A square notch is provided inside the arc block, a strong spring is connected between the arc block and the guide plate, a limit bar is fixedly connected to the bottom of the square notch, the limit bar is located inside the limit notch, and the square block is located inside the square notch.

3. The split multi-station die drawing equipment according to claim 2 is characterized in that: Circular pressure rods are provided on both sides of the I-shaped sleeve, and the circular pressure rods include a straight rod clamped with a driver, two spring telescopic rods connected to the bottom of the straight rod, and an inclined arc rod connected to the two spring telescopic rods, the inclined arc rod is located directly above the arc block, and the bottom of the inclined arc rod close to the limiting plate is an arc surface. When the die is in the initial position, the distance between the inclined arc rod and the arc block is always smaller than the distance between the die and the workpiece.

4. The split multi-station die drawing equipment according to claim 1, characterized in that: The positioning block slides horizontally, the pressure block slides vertically, two arc strips are arranged on the outside of the upper push ring, and the push rod is always in contact with the arc strips.

5. The split multi-station die drawing equipment according to claim 1, characterized in that: The pressure block comprises a pressure strip slidably connected inside the I-shaped sleeve, a cylinder fixedly connected to the bottom of the pressure strip, and a return spring connected between the cylinder and the I-shaped sleeve. The top of the pressure strip extends above the I-shaped sleeve.

6. The split multi-station die drawing equipment according to claim 1, characterized in that: The top of the I-shaped sleeve is provided with a plurality of through slots, the positioning blocks are located inside the through slots, two sliding rods are arranged inside the I-shaped sleeve, the pressure block and the push rod are both slidably connected to the outside of the sliding rods, and the number of the through slots, positioning blocks and connecting rods is equal.

7. A deep drawing method of a split multi-station die drawing device, using the split multi-station die drawing device according to claim 1, characterized in that: The following steps are involved: Preparation: Select the die and bottom die according to the workpiece, install and debug, check the equipment, set parameters, and load the material to the bottom die through the loading system; Equipment startup and positioning: The press starts, the round pressure rod pushes the arc block, and the positioning piece cooperates with the positioning block under the guidance of the guide frame to complete the internal and external positioning of the workpiece; Deep drawing: The press drives the die to apply pressure, and the workpiece deforms according to the shape of the bottom die. The pressure is controlled to ensure normal deep drawing; Processing completion and unloading: the press moves back and the robotic arm transfers the workpiece.

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