Split type multi-station die drawing equipment and drawing method thereof

Abstract

The invention relates to the technical field of stamping dies, and discloses split type multi-station die deep drawing equipment and a deep drawing method.The split type multi-station die deep drawing equipment comprises a driver and further comprises a press connected to the interior of the driver in a sliding mode and a plurality of bottom dies arranged at equal intervals and connected to the interior of the driver; 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 piece and the positioning block are pushed through the circular pressing rod to position the inside and the outside of the workpiece, and when the pressing die reaches the machining position, positioning of the workpiece is relieved. When the pressing machine moves downwards, the circular pressing rod is driven to extrude the positioning piece, so that the positioning piece is matched with the positioning block under the guide of the guide frame, it is ensured that a workpiece is always located at the correct machining position, the stability of the workpiece in the machining process is ensured, and the machining precision of the workpiece is greatly improved; and the problems of non-uniform wall thickness, inconsistent tensile deformation and the like caused by workpiece displacement are avoided.

Description

Technical Field

[0001] The 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] Multi-station die drawing equipment is equivalent to a collection 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, quick die change systems, loading systems, feeding systems, electrical control and network control systems. 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, to work in continuous stroke, replacing the single-machine single-time working mode, thereby improving production efficiency.

[0003] However, in the prior art, the position of the manipulator is usually set on both sides of the multi-station mold, and its structure is set as an arc-shaped piece. When working, the cylindrical workpiece in the middle is squeezed and grasped from both sides by two such arc-shaped pieces, and then reciprocated on the guide rail by the drive of the mechanical structure, so as to realize the transfer and displacement of the workpiece between different stations. However, when the equipment is in a working state, mechanical vibration will be generated. At the same time, in the process of rapid grasping and transferring of the workpiece by the manipulator, inertia will be generated due to the change of its own movement speed, so that the originally grasped workpiece is very easy to deviate during the transfer and placement process, resulting in the subsequent stamping and stretching processing in the mold. This leads to uneven wall thickness stretching, resulting in unqualified product quality and easy direct damage to the workpiece during the stretching process. Therefore, a circular convex ring is currently set on the top of the mold to limit the workpiece. By utilizing its annular structure, the workpiece is constrained from the inside after the workpiece is transferred, thereby effectively avoiding the workpiece from being offset due to equipment vibration and robot movement inertia, reducing the probability of workpiece offset. However, in actual large-scale processing, as the number of processing times continues to increase, the workpiece will frequently collide with the circular convex ring during the transfer and stretching process. At the same time, the upper die will also continuously collide and rub against the circular convex ring during operation. This continuous collision and friction has caused great damage to the material and structure of the circular convex ring, making the circular convex ring very prone to wear and uneven surface, and unable to effectively position the workpiece. The workpiece will still shift during transfer, seriously affecting the processing effect of the workpiece, which is very likely to affect the processing effect of the workpiece, resulting in an increase in the defective rate of products, increased production costs and production cycles, and the workpieces of different workstations are of different sizes, and thus require different drive lengths. Therefore, each workstation requires a different drive 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 of the robot.

[0004] Therefore, a split multi-station die drawing device and a drawing method thereof are proposed to avoid workpiece deviation and ensure effective stretching of the workpiece. Summary of the invention

[0005] The object of the present invention is to provide a split multi-station die drawing device and a drawing method thereof, so as to solve the problem that workpieces cannot be effectively limited and deviate during large-scale processing.

[0006] On the one hand, the present invention proposes: a split multi-station mold drawing equipment, including a driver, and also including 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 die is arranged at the bottom of the press, the die includes an initial position and a processing position, when the die moves from the initial position to the set position, the circular pressure rod pushes the positioning piece and the positioning block to position the workpiece inside and outside, and the workpiece is released when the die reaches the processing position.

[0007] Furthermore, 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.

[0008] Furthermore, 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 groove, 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.

[0009] Furthermore, the bottom mold includes a supporting sleeve fixedly connected to the top of the driver, a telescopic sleeve slidably connected to the outside of the supporting 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.

[0010] Furthermore, a square slot is provided inside the arc block, a strong spring is connected between the arc 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, and the square block is located inside the square slot.

[0011] Furthermore, 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 limit 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.

[0012] Furthermore, the positioning block slides horizontally, the pressure block slides vertically, two arc-shaped bars are arranged on the outside of the upper push ring, and the push rod is always in contact with the arc-shaped bars.

[0013] Furthermore, the pressure block includes a pressure strip slidably connected to the inside of 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, and the top of the pressure strip extends to the top of the I-shaped sleeve.

[0014] Furthermore, a plurality of through slots are provided on the top of the I-shaped sleeve, the positioning blocks are located inside the through slots, two sliding rods are provided 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.

[0015] Another aspect of the present invention provides: a deep drawing method of a split multi-station die drawing device, comprising the following steps: 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.

[0016] Equipment start-up and positioning: The press is started, the circular 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.

[0017] Drawing process: The press drives the die to apply pressure, the workpiece deforms according to the shape of the bottom die, and the pressure is controlled to ensure normal drawing.

[0018] Processing completion and unloading: the press moves back and the robotic arm transfers the workpiece.

[0019] Beneficial effects of the present invention: When the press moves downward, it drives the circular pressure rod to squeeze the positioning piece, so that the positioning piece cooperates with the positioning block under the guidance of the guide frame to effectively position the workpiece inside and outside, further improving the processing accuracy and quality of the workpiece, reducing the defective rate, and improving production efficiency. It continuously performs dynamic positioning on the workpiece, and promptly corrects slight deviations caused by equipment vibration or inertia to ensure 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 tensile deformation caused by workpiece displacement.

[0020] The circular pressure rod is driven by the downward movement of the press to accurately apply pressure to the arc block. The arc block is offset due to the pressure, and the positioning part is pushed to move under the guidance of the guide frame, thereby positioning the workpiece. By simply adjusting the circular pressure rod to change the relative position contact point between the circular pressure rod and the arc block, workpieces of different sizes can be continuously positioned to ensure that the workpiece is always in the correct processing position. This ensures that workpieces of different sizes maintain stability during processing and avoids problems such as uneven wall thickness and inconsistent tensile deformation caused by displacement.

[0021] Simply by connecting the circular pressure rod to the bottom of the press, power can be transmitted, thereby quickly completing the installation and integration of the structure. At the same time, placing the positioning part under the workpiece can effectively avoid affecting the shifting work and the normal operation of the equipment, shortening the equipment transformation cycle and enabling enterprises to put the equipment into new production processes in a short time. Every time the press moves down, the circular pressure rod can respond quickly, apply pressure to the arc block, complete the workpiece positioning, and quickly enter production, enhancing the flexibility and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a three-dimensional structure of the present invention from a first viewing angle; Figure 2 It is a structural schematic diagram of the bottom mold of the present invention; Figure 3 It is a structural schematic diagram of the arc block of the present invention; Figure 4 A top view of the bottom mold of the present invention; Figure 5 For the present invention Figure 4 The cross-sectional view at AA in the middle; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 It is a structural schematic diagram of the guide frame of the present invention; Figure 8 It is a structural schematic diagram of the positioning member of the present invention; Fig. 9 It is a cross-sectional view of the I-shaped sleeve of the present invention; Fig.10 It is a structural schematic diagram of the push-up ring of the present invention; Fig.11 It is a front view of the driver of the present invention.

[0023] In the figure: 1. Driver; 2. Press; 21. Pressing die; 3. Bottom die; 31. Support sleeve; 32. Telescopic sleeve; 33. Inner die; 4. I-shaped sleeve; 41. Through slot; 42. Slide bar; 5. Guide frame; 51. Support frame; 52. Limit plate; 53. Guide plate; 531. Guide notch; 5311. Oblique section; 5312. Horizontal section; 532. Limit notch; 6. Positioning piece; 61. Round shaft; 62. Positioning frame; 63. Positioning wheel ; 64, arc-shaped pressure rod; 65, square block; 7, arc-shaped block; 71, square notch; 72, strong spring; 73, limit strip; 8, round pressure rod; 81, straight rod; 82, spring telescopic rod; 83, oblique arc rod; 9, pressure block; 91, pressure strip; 92, cylinder; 93, return spring; 10, positioning block; 11, upper push ring; 111, arc-shaped strip; 12, return spring; 13, connecting rod; 14, push rod; 15, workpiece. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] Embodiment 1, refer to Figure 1-Figure 11, which is the first embodiment of the present invention, provides a split multi-station die drawing device, including a driver 1, and also includes a press 2 slidably connected to the inside of the driver 1, a plurality of bottom molds 3 equidistantly arranged and connected to the inside of the driver 1, an I-shaped sleeve 4 fixedly connected to the top of the bottom mold 3, a plurality of guide frames 5 fixedly connected to the inside of the driver 1, a positioning member 6 slidably connected between the two guide frames 5, an arc block 7 slidably connected to the inside of the guide frame 5, a plurality of circular pressure rods 8 connected to the bottom of the press 2, a pressure block 9, a positioning block 10 and an upper push ring 11 slidably connected to the inside of the I-shaped sleeve 4, a return spring 12 connected between the upper push ring 11 and the I-shaped sleeve 4, and a return spring 12 connected between the upper push ring 11 and the positioning block 10. A connecting rod 13 is provided between the two parts, and a push rod 14 is slidably connected to the inside of 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 provided on both sides of the bottom die 3. A die 21 is provided at the bottom of the press 2. The die 21 includes an initial position and a processing position. When the die 21 moves from the initial position to the set position, the circular pressure rod 8 pushes the positioning member 6 and the positioning block 10 to position the workpiece 15 inside and outside. When the die 21 reaches the processing position, the workpiece 15 is released from the positioning, that is, when the die 21 reaches the processing position, the workpiece 15 is released from the positioning. At this time, the press 2 can constrain the workpiece 15. The design of releasing the positioning during processing avoids the positioning member 6 and the positioning block 10 from interfering with the workpiece 15, thereby ensuring the smooth progress of the processing.

[0026] Specifically, when the die 21 contacts the workpiece 15, the die 21 reaches the processing position, and the guide frame 5 plays a guiding role. During the operation of the equipment, the positioning member 6 and the arc block 7 need to be moved 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.

[0027] In addition, compared with the traditional circular convex ring positioning method, the positioning block 10 is not only more accurate in positioning from the inside of the workpiece 15, but also because the positioning block 10 and the workpiece 15 will only be in contact for a short time, and the positioning block 10 is relatively small in width and the contact area between the two is relatively small, and at the same time, when the 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, and ensuring that the positioning block 10 can always effectively position the workpiece 15 during long-term, large-scale processing.

[0028] Among them, two guide frames 5 are arranged on both sides of a single bottom mold 3, that is, there are a total of four guide frames 5 on both sides of the bottom mold 3, with two guide frames 5 on one side, and a positioning piece 6 between the two guide frames 5, and an arc block 7 inside the guide frame 5. Since the top of the first bottom mold 3 is a circular plate and does not need to be positioned, except for the first bottom mold 3, the number and positions of the positioning structures on both sides of the remaining bottom molds 3 correspond one to one.

[0029] Reference Figure 1-Figure 7When the die 21 is in the initial position, the positioning member 6 is located below the workpiece 15, which will not affect the operation of the robot arm. The guide frame 5 includes a support frame 51 fixedly connected to the top of the driver 1, a limit plate 52 fixedly connected to one side of the support frame 51, and a guide plate 53 fixedly connected to the top of the support frame 51. The guide plate 53 is provided with a guide slot 531 and a limit slot 532. The guide slot 531 is divided into an oblique section 5311 and a horizontal section 5312. The oblique section 5311 will guide the positioning member 6 to move upward when the positioning member 6 is driven.

[0030] Specifically, the guide plate 53 can guide the movement trajectory of the positioning member 6 and the arc block 7. In the process of the press 2 driving the die 21 to move from the initial position to the processing position, the positioning member 6 is guided by the inclined section 5311 of the guide groove 531, and the positioning member 6 moves from the bottom to a position at the same height as the bottom of the workpiece 15 to position the outside of the workpiece 15.

[0031] In addition, the limiting plate 52 can limit the circular pressure rod 8, so that the circular pressure rod 8 moves when it contacts the limiting plate 52, and the circular pressure rod 8 no longer squeezes the positioning member 6 and the arc block 7, and then the positioning member 6 and the arc block 7 move back. At this time, the positioning member 6 and the arc block 7 have completed the positioning of the workpiece 15, and the die 21 will also reach the processing position. At this time, the positioning member 6 and the arc block 7 do not need to be positioned again.

[0032] Reference Figure 1-Figure 8 The positioning member 6 includes a circular shaft 61 slidably connected to the inside of the guide groove 531, two positioning frames 62 are provided and fixedly connected to the top of the circular shaft 61, a positioning wheel 63 is rotatably connected to one end of the positioning frame 62, only one arc pressure rod 64 is provided and connected to one side of the positioning frame 62, and two square blocks 65 are respectively clamped at both ends of the circular shaft 61. The arc pressure rod 64 is located on the side of the positioning frame 62 close to the pressure block 9, so that the arc pressure rod 64 can drive the pressure block 9 when moving, so that the positioning block 10 positions the workpiece 15 inside and outside.

[0033] Specifically, the two square blocks 65 limit the rotation of the circular shaft 61, so that the circular shaft 61 is always in a single state, and 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 will not deviate 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 caused by friction and avoid scratching the surface of the workpiece 15.

[0034] Reference Figure 2-Figure 5 The bottom mold 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 mold 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.

[0035] 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.

[0036] Reference Figure 2-Figure 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.

[0037] Reference Figure 2-Figure 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. 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.

[0038] Specifically, the circular pressure rod 8 is used to press down with the pressure of the press machine 2, so that the arc block 7 is pressed and deflected, and then the arc block 7 compresses the strong spring 72. When dealing with workpieces 15 of different sizes, the relative position of the circular pressure rod 8 and the arc block 7 can be adjusted, 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 deflect. At this time, the inclined arc rod 83 cannot drive the arc block 7, and the arc block 7 will not use the positioning member 6 to position the workpiece 15. Therefore, the circular pressure rod 8 is adjusted as a whole. When the arc block 7 moves to a position away from the arc block 7, the relative position of the two changes, and the contact point between the inclined arc rod 83 and the arc block 7 will change. It can be understood that when the inclined arc rod 83 originally squeezes the arc block 7, the arc block 7 will move from one end of the inclined arc rod 83 to the other end of the inclined arc rod 83. At this time, the arc block 7 moves ten centimeters, but due to the movement of the inclined arc rod 83, the contact point of the two changes, and the arc block 7 will only contact the middle part of the inclined arc rod 83, resulting in the inclined arc rod 83 can only squeeze the arc block 7 to move eight centimeters, so that the position of the circular pressure rod 8 is adjusted to cope with workpieces 15 of different sizes.

[0039] Reference Figure 1-Figure 11 The positioning block 10 slides horizontally, and the pressure block 9 slides vertically. Two arc-shaped strips 111 are arranged on the outside of the upper push ring 11, and the push rod 14 is always in contact with the arc-shaped strip 111. After the pressure block 9 is squeezed by the arc-shaped pressure rod 64, the pressure block 9 will move vertically downward. The pressure block 9 will use the push rod 14 to press the bottom of the arc-shaped strip 111, and then the upper push ring 11 moves upward to drive the connecting rod 13, so that the positioning block 10 slides and is positioned from the inside of the workpiece 15.

[0040] Reference Figure 1-Figure 11 The pressure block 9 includes a pressure strip 91 slidably connected to the inside of the I-shaped sleeve 4, a cylinder 92 fixedly connected to the bottom of the pressure strip 91, and a return spring 93 connecting the cylinder 92 and the I-shaped sleeve 4. The top of the pressure strip 91 extends to the top of the I-shaped sleeve 4 and can be moved by being squeezed by the arc pressure rod 64.

[0041] Reference Figure 1-Figure 11 A plurality of through slots 41 are provided on the top of the I-shaped sleeve 4, the positioning block 10 is located inside the through slots 41, two slide bars 42 are provided inside the I-shaped sleeve 4, the pressure block 9 and the push rod 14 are both slidably connected to the outside of the slide bar 42, and the number of through slots 41, positioning blocks 10 and connecting rods 13 is equal.

[0042] 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.

[0043] Example 2, refer to Figure 1-Figure 11 , which is a second embodiment of the present invention, provides: a split multi-station die drawing device drawing method, comprising the following steps: 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.

[0044] 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.

[0045] 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.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A split multi-station die drawing device, comprising a driver (1), characterized in that: It also includes a press (2) slidably connected to the inside of the driver (1), a plurality of base molds (3) equidistantly arranged and connected to the inside of the driver (1), an I-shaped sleeve (4) fixedly connected to the top of the base mold (3), a plurality of guide frames (5) fixedly connected to the inside of the driver (1), a positioning member (6) slidably connected between the two guide frames (5), an arc block (7) slidably connected to the inside of the guide frame (5), a plurality of circular pressure rods (8) connected to the bottom of the press (2), a pressure block (9), a positioning block (10) and an upper push ring (11) slidably connected to the inside of the I-shaped sleeve (4), and a return spring connected between the upper push ring (11) and the I-shaped sleeve (4). (12), a connecting rod (13) connected between the upper push ring (11) and the positioning block (10), and a push rod (14) slidably connected to the inside of 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 mold (3), and a pressing die (21) is arranged at the bottom of the press (2), and 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 pressing rod (8) to position the workpiece (15) inside and outside. When the pressing die (21) reaches the processing position, the workpiece (15) is released from the positioning.

2. The split multi-station die drawing equipment according to claim 1, characterized in that: The guide frame (5) comprises a support frame (51) fixedly connected to the top of the driver (1), a limit plate (52) fixedly connected to one side of the support frame (51), and a guide plate (53) fixedly connected to the top of the support frame (51), the guide plate (53) being provided with a guide slot (531) and a limit slot (532), and the guide slot (531) being divided into an oblique section (5311) and a horizontal section (5312).

3. The split multi-station die drawing equipment according to claim 2 is characterized in that: When the die (21) is located at the initial position, the positioning member (6) is located below the workpiece (15), and the positioning member (6) includes a circular shaft (61) slidably connected to the inside of the guide slot (531), two positioning frames (62) are provided and fixedly connected to the top of the circular shaft (61), a positioning wheel (63) is rotatably connected to one end of the positioning frame (62), only one arc-shaped pressure rod (64) is provided and connected to one side of the positioning frame (62), and two square blocks (65) are respectively clamped at both ends of the circular shaft (61), and the arc-shaped pressure rod (64) is located on one side of the positioning frame (62) close to the pressure block (9).

4. The split multi-station die drawing equipment according to claim 2 is characterized in that: The bottom mold (3) comprises 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), and an inner mold (33) fixedly connected to the inside of the driver (1); the I-shaped sleeve (4) is fixedly connected to the top of the telescopic sleeve (32).

5. The split multi-station die drawing equipment according to claim 3 is characterized in that: A square notch (71) is provided inside the arc-shaped block (7), a strong spring (72) is connected between the arc-shaped block (7) and the guide plate (53), a limit strip (73) is fixedly connected to the bottom of the square notch (71), the limit strip (73) is located inside the limit notch (532), and the square block (65) is located inside the square notch (71).

6. The split multi-station die drawing equipment according to claim 2, characterized in that: A circular pressure rod (8) is provided on both sides of the I-shaped sleeve (4), the circular pressure rod (8) comprising 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) being located directly above the arc block (7), the bottom of the oblique arc rod (83) close to the limiting plate (52) being an arc surface, and 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).

7. The split multi-station die drawing equipment according to claim 1, characterized in that: The positioning block (10) slides horizontally, the pressure block (9) slides vertically, two arc-shaped strips (111) are arranged outside the upper push ring (11), and the push rod (14) is always in contact with the arc-shaped strips (111).

8. The split multi-station die drawing equipment according to claim 1, characterized in that: The pressure block (9) comprises a pressure strip (91) slidably connected to the inside of the I-shaped sleeve (4), a cylinder (92) fixedly connected to the bottom of the pressure strip (91), and a return spring (93) connecting the cylinder (92) and the I-shaped sleeve (4). The top of the pressure strip (91) extends to the top of the I-shaped sleeve (4).

9. The split multi-station die drawing equipment according to claim 1, characterized in that: The top of the I-shaped sleeve (4) is provided with a plurality of through slots (41), the positioning blocks (10) are located inside the through slots (41), two sliding rods (42) are provided inside the I-shaped sleeve (4), the pressure block (9) and the push rod (14) are both slidably connected to the outside of the sliding rods (42), and the through slots (41), the positioning blocks (10) and the connecting rods (13) are equal in number.

10. 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 pressing die (21) and the bottom die (3) according to the workpiece (15), install and debug, check the equipment, set parameters, and load the material to the bottom die (3) through the loading system; Equipment startup and positioning: the press (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); Deep drawing processing: the press (2) drives the die (21) to apply pressure, and the workpiece (15) is deformed according to the shape of the bottom die (3), and the pressure is controlled to ensure normal deep drawing; Processing completion and unloading: the press (2) moves back and the robot arm transfers the workpiece (15).

Images