Die stroke rod with wear-resistant head capable of being quickly replaced

Abstract

The invention relates to the technical field of mold stroke rods, and discloses a mold stroke rod with a wear-resistant head capable of being quickly replaced, the mold stroke rod comprises a supporting seat and a guide supporting column connected with an external drawing equipment body, the guide supporting column comprises the wear-resistant head and a telescopic rod, and the telescopic rod is provided with a combination assembly used for quickly mounting and dismounting the wear-resistant head. Cohesion sets are symmetrically arranged in the guide supporting column, an adjusting assembly is arranged below the telescopic rod, a combination assembly comprises a mounting plate provided with a circular groove, two locking grooves with different heights are downwards formed in the inner wall of the circular groove, and two matching pieces are fixedly arranged on the upper end face of the mounting plate. The mold stroke rod with the wear-resistant head capable of being quickly replaced can effectively solve the problems that in the prior art, guide supporting columns usually need to be integrally replaced, the maintenance cost is remarkably increased, and due to the fact that part of the guide supporting columns are large in size and complex in structure, replacement work is particularly tedious, and the replacement cost is high. And adverse effects are brought to production efficiency and maintenance convenience.

Description

Technical Field

[0001] The present invention relates to the technical field of die stroke rods, and particularly to a die stroke rod with a replaceable wear-resistant head. Background Art

[0002] A drawing die, also known as a deep drawing die or a stretching die, its core function is to precisely shape a metal sheet into a workpiece with a specific shape through plastic deformation. It mainly consists of key components such as a punch, a die, a blank holder, a fixed seat, and an ejector. During the working process, the upper die presses down and closely fits with the lower die to achieve precise drawing of the sheet.

[0003] In this precise drawing process, the guiding pillar with a telescopic function plays a crucial role. It not only provides stable shock absorption support between the upper and lower dies, ensuring the stable operation of the die in a high-speed and high-pressure working environment, but also undertakes the important task of precise guiding, guaranteeing the accurate alignment between the dies, so as to ensure the high quality and consistency of the drawn workpiece.

[0004] Although the guiding pillar plays an indispensable role in the drawing work, with the accumulation of working time, the contact surface between the guiding pillar and the upper die will inevitably wear, which not only affects the guiding accuracy, but also may damage the overall performance of the die. Currently, the guiding pillar usually needs to be replaced as a whole, which not only significantly increases the maintenance cost, but also due to the large volume and complex structure of some guiding pillars, the replacement work is particularly cumbersome, bringing adverse effects to production efficiency and maintenance convenience. Summary of the Invention

[0005] Aiming at the above-mentioned drawbacks of the prior art, the present invention provides a die stroke rod with a replaceable wear-resistant head, which can effectively solve the problems in the prior art that the guiding pillar usually needs to be replaced as a whole, not only significantly increasing the maintenance cost, but also due to the large volume and complex structure of some guiding pillars, the replacement work is particularly cumbersome, bringing adverse effects to production efficiency and maintenance convenience.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: The present invention provides a die stroke rod with a replaceable wear-resistant head, comprising: A support seat; The guiding strut connected to the external drawing equipment body, the guiding strut includes a wear-resistant head, the wear-resistant head is arranged inside the guiding strut through a telescopic rod and coaxially installed with the guiding strut. The outer wall of the telescopic rod is symmetrically provided with two rectangular grooves distributed in the up and down directions according to the center of the circle. A coupling assembly for quickly installing and disassembling the wear-resistant head is arranged on the telescopic rod. Inside the guiding strut and symmetrically arranged on the outer wall of the wear-resistant head is a clamping group. Below the telescopic rod is an adjusting assembly for adjusting the position of the clamping group; Among them, the top end of the wear-resistant head is arranged in a conical shape, that is, the diameter of the top end of the wear-resistant head gradually decreases from bottom to top. The lower end surface of the wear-resistant head is fixedly provided with an installation post with an installation groove opened along the circumferential direction. One side of the installation post away from the wear-resistant head is fixedly provided with a locking block. Two strip-shaped grooves extending in the up and down directions and symmetrically arranged according to the center of the installation post are opened on the outer wall of the installation groove; Among them, the coupling assembly includes an installation plate fixedly arranged on the upper end surface of the telescopic rod and fittingly attached to the lower end surface of the installation post. A circular groove is opened downward at the center position of the installation plate. Two locking grooves with different heights are opened downward on the inner wall of the circular groove. And two fitting parts are fixedly arranged on the upper end surface of the installation plate. The two fitting parts are arranged inside the installation groove of the installation post and symmetrically installed according to the fitting groove.

[0007] Furthermore, the fitting part includes an inverted L-shaped bearing plate fixedly arranged on the upper end surface of the installation plate. One end of the inverted L-shaped bearing plate close to the circular groove is fixedly provided with an arc-shaped slider located inside the installation groove through a connecting rod. A pressing rod is slidably arranged inside the arc-shaped slider. One end of the pressing rod penetrates through the arc-shaped slider and is intermittently matched with the outer wall of the installation post. The other end of the pressing rod slidably penetrates through the connecting plate and the inverted L-shaped bearing plate and is in contact with the inner wall of the guiding strut.

[0008] Furthermore, the guiding strut is a telescopic part and is fixedly arranged on the upper end surface of the support seat. Two semi-circular groove groups symmetrically arranged according to its center are opened on the inner wall of the guiding strut. The two clamping groups are respectively arranged inside the two semi-circular groove groups. Each semi-circular groove group includes three arc-shaped grooves distributed in the up and down directions. Wedge-shaped grooves corresponding to the positions of the two pressing rods are also opened on the inner wall of the guiding strut. The inclined surface of the wedge-shaped groove gradually decreases from top to bottom.

[0009] Furthermore, the clamping group includes three arc-shaped plates slidably arranged inside the corresponding arc-shaped grooves. A plurality of roller shafts distributed in the up and down directions and in contact with the outer wall of the wear-resistant head are rotatably arranged on one side wall of the three arc-shaped plates close to the wear-resistant head. The plurality of roller shafts are slidably arranged on the outer wall of the arc-shaped plate through springs. By arranging the plurality of roller shafts, the friction between the wear-resistant head and the guiding strut when the wear-resistant head is pressed downward by force is reduced, and the service life of the wear-resistant head is prolonged. The other sides of the three arc-shaped plates are jointly fixedly provided with an M-shaped connecting frame through connecting rods. The M-shaped connecting frame connects the three arc-shaped plates into a whole and a chamfer is opened on the lower end surface of the M-shaped connecting frame. An adjusting part is also connected inside the guiding strut and below the M-shaped connecting frame.

[0010] Further, the adjusting member includes two strip plates corresponding to the positions of the M-shaped connecting frames and sliding through the guiding struts. Chamfers are also formed at the positions of the two strip plates corresponding to the chamfers of the M-shaped connecting frames, and a number of rollers are rotatably installed on the inclined surfaces at the chamfers of the strip plates. Rectangular through grooves are respectively formed on one side of the two strip plates close to each other. A wedge-shaped top block is slidably installed inside the rectangular through grooves and the other end of which is located inside the rectangular groove of the telescopic rod. The upper end surface of the wedge-shaped top block is in contact with the upper inner wall of the rectangular through groove.

[0011] Further, the adjusting assembly includes a circular plate located inside the guiding strut and fixedly connected to the lower end surface of the telescopic rod. Two waist-shaped telescopic plates are hinged to the lower end surface of the circular plate. The other ends of the waist-shaped telescopic plates are hinged to a sliding block slidably installed inside the guiding strut through a tension spring. A driving group is also arranged between the two waist-shaped telescopic plates and below the circular plate.

[0012] Further, the driving group includes a double-sided rack fixedly arranged on the lower end surface of the circular plate. The teeth on both sides of the double-sided rack are respectively meshed with gears rotatably connected to the guiding strut and internally installed with volute springs. The other sides of the two gears away from the double-sided rack are respectively meshed with mating racks sliding in the guiding strut in the up and down direction.

[0013] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: The present invention is provided with two arc-shaped sliders that fit against the outer wall of the wear-resistant head. By closely adhering the arc-shaped sliders to the wear-resistant head, it is ensured that the wear-resistant head will not deviate in the radial direction. While completing the radial limit of the wear-resistant head, the locking block rotates downward and enters the installation plate and completes the limit with the installation plate, thereby ensuring that the locking block will not deviate in the axial position inside the locking groove. The limit work of the wear-resistant head can be synchronously completed through the same installation step, which not only simplifies the installation efficiency of the wear-resistant head but also ensures the stability of the installation of the wear-resistant head. Finally, when replacing the wear-resistant head, only need to rotate the wear-resistant head in the opposite direction of the locking groove and then lift it upward. After lifting, continue to repeat the rotation action. Finally, after aligning the connecting plate with the strip groove, the wear-resistant head to be replaced can be taken out. The quick installation and disassembly method of the wear-resistant head enables it to be quickly disassembled and replaced when it is severely worn, without the need to replace the whole stroke rod, reducing the maintenance cost and improving the use efficiency and economy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 Schematic diagram of the three-dimensional structure in the embodiment of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the guiding pillar in the embodiment of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the internal part mechanism of the guiding pillar in the embodiment of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the wear-resistant head in the embodiment of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the combination component in the embodiment of the present invention; Figure 6 Schematic diagram of the positional relationship between the wear-resistant head and the combination component in the embodiment of the present invention; Figure 7 Schematic diagram of the three-dimensional separated structure of the clamping group in the embodiment of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the adjusting component in the embodiment of the present invention; Figure 9 is the embodiment of the present invention Figure 8 Schematic diagram of the partial enlargement at position A in the embodiment; Figure 10 is the embodiment of the present invention Figure 8 Schematic diagram of the partial enlargement at position B in the embodiment; Figure 11 Schematic diagram of the three-dimensional separated structure of the cooperating rack and the strip plate in the embodiment of the present invention; Figure 12 Schematic diagram of the three-dimensional state transformation of the wear-resistant head, the clamping group and the adjusting component in the embodiment of the present invention.

[0016] The reference numerals in the figure respectively represent: 0, drawing equipment body; 1, support seat; 2, guiding pillar; 21, wear-resistant head; 211, mounting post; 212, locking block; 22, telescopic rod; 23, combination component; 231, mounting plate; 232, locking groove; 233, cooperating part; 2331, inverted L-shaped bearing plate; 2332, arc-shaped sliding block; 2333, abutting rod; 24, clamping group; 241, arc-shaped plate; 242, M-shaped connecting frame; 243, adjusting part; 2431, strip plate; 2432, wedge-shaped top block; 25, adjusting component; 251, waist-shaped telescopic plate; 252, sliding block; 253, driving group; 2531, bilateral rack; 2532, gear; 2533, cooperating rack; 26, arc-shaped groove; 27, wedge-shaped groove. Detailed implementation manners

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Embodiment:

[0020] Please refer to Figures 1 - 12 , the present invention provides a technical solution: a die stroke rod with a quickly replaceable wear-resistant head, including: A support base 1; A guiding pillar 2 connected to the external drawing equipment body 0. The guiding pillar 2 includes a wear-resistant head 21. The wear-resistant head 21 is arranged inside the guiding pillar 2 through a telescopic rod 22 and coaxially installed with the guiding pillar 2. Two rectangular grooves distributed in the up-and-down direction are symmetrically opened on the outer wall of the telescopic rod 22 according to the center of the circle. A coupling assembly 23 for quickly installing and disassembling the wear-resistant head 21 is arranged on the telescopic rod 22. A clamping group 24 is symmetrically arranged inside the guiding pillar 2 and on the outer wall of the wear-resistant head 21. An adjusting assembly 25 for adjusting the position of the clamping group 24 is arranged below the telescopic rod 22; Among them, the top of the wear-resistant head 21 is arranged in a conical shape, that is, the diameter of the top of the wear-resistant head 21 gradually decreases from bottom to top. An installation column 211 with an installation groove opened in the circumferential direction is fixedly arranged on the lower end surface of the wear-resistant head 21. A locking block 212 is fixedly arranged on one side of the installation column 211 away from the wear-resistant head 21. Two strip-shaped grooves extending in the up-and-down direction and symmetrically arranged according to the center of the installation column 211 are opened on the outer wall of the installation groove; Among them, the coupling assembly 23 includes an installation plate 231 fixedly arranged on the upper end surface of the telescopic rod 22 and fittingly attached to the lower end surface of the installation column 211. A circular groove is opened downward at the center position of the installation plate 231. Two locking grooves 232 with different heights are opened downward on the inner wall of the circular groove. Two fitting parts 233 are fixedly arranged on the upper end surface of the installation plate 231. The two fitting parts 233 are arranged inside the installation groove of the installation column 211 and symmetrically installed according to the fitting groove.

[0021] The fitting 233 includes an inverted L-shaped bearing plate 2331 fixedly arranged on the upper end surface of the mounting plate 231. One end of the inverted L-shaped bearing plate 2331 close to the circular groove is fixedly provided with an arc-shaped slider 2332 located inside the mounting groove through a connecting rod. An abutting rod 2333 is slidably arranged inside the arc-shaped slider 2332. One end of the abutting rod 2333 penetrates through the arc-shaped slider 2332 and is in intermittent fit with the outer wall of the mounting column 211. The other end of the abutting rod 2333 slidably penetrates through the connecting plate and the inverted L-shaped bearing plate 2331 and abuts against the inner wall of the guiding pillar 2.

[0022] The guiding pillar 2 is a telescopic member and is fixedly arranged on the upper end surface of the support base 1. Two semi-circular groove groups symmetrical about its center are provided on the inner wall of the guiding pillar 2. Two holding groups 24 are respectively arranged inside the two semi-circular groove groups. Each semi-circular groove group includes three arc-shaped grooves 26 distributed in the up and down direction. The inner wall of the guiding pillar 2 is also provided with wedge-shaped grooves 27 corresponding to the positions of the two abutting rods 2333. The inclined surface of the wedge-shaped groove 27 gradually decreases from top to bottom.

[0023] The holding group 24 includes three arc-shaped plates 241 slidably arranged inside the corresponding arc-shaped grooves 26. A plurality of axle rollers distributed in the up and down direction and abutting against the outer wall of the wear-resistant head 21 are rotatably arranged on one side wall of the three arc-shaped plates 241 close to the wear-resistant head 21. The plurality of axle rollers are slidably arranged on the outer wall of the arc-shaped plate 241 through springs. By arranging the plurality of axle rollers, the friction between the wear-resistant head 21 and the guiding pillar 2 when the wear-resistant head 21 is pressed downward by force is reduced, and the service life of the wear-resistant head 21 is prolonged. The other sides of the three arc-shaped plates 241 are fixedly provided with an M-shaped connecting frame 242 through a connecting rod. The M-shaped connecting frame 242 connects the three arc-shaped plates 241 into a whole and a chamfer is provided on the lower end surface of the M-shaped connecting frame 242. An adjusting member 243 is also connected inside the guiding pillar 2 and below the M-shaped connecting frame 242.

[0024] The adjusting member 243 includes two strip-shaped plates 2431 corresponding to the position of the M-shaped connecting frame 242 and slidably penetrating through the guiding pillar 2. The two strip-shaped plates 2431 are also provided with chamfers corresponding to the chamfers of the M-shaped connecting frame 242, and a plurality of rotating rollers are rotatably installed on the inclined surface at the chamfer of the strip-shaped plates 2431. Rectangular through grooves are respectively provided on one side of the two strip-shaped plates 2431 close to each other. A wedge-shaped top block 2432 slidably arranged inside the guiding pillar 2 and with the other end located inside the rectangular groove of the telescopic rod 22 is fitted and installed inside the rectangular through grooves. The upper end surface of the wedge-shaped top block 2432 abuts against the upper inner wall of the rectangular through groove.

[0025] The adjusting assembly 25 includes a circular plate located inside the guiding strut 2 and fixedly connected to the lower end surface of the telescopic rod 22. Two waist-shaped telescopic plates 251 are hinged to the lower end surface of the circular plate. The other end of the waist-shaped telescopic plate 251 is hinged with a sliding block 252 slidably arranged inside the guiding strut 2 through a tension spring. A driving group 253 is also arranged between the two waist-shaped telescopic plates 251 and below the circular plate.

[0026] The driving group 253 includes a bilateral rack 2531 fixedly arranged on the lower end surface of the circular plate. On both sides of the bilateral rack 2531, teeth are respectively meshed with gears 2532 which are internally installed with volute springs and rotatably connected to the guiding strut 2. On one side of the two gears 2532 away from the bilateral rack 2531, engaging racks 2533 slidably arranged in the guiding strut 2 in the up-and-down direction are respectively meshed.

[0027] During specific operation, for the quick installation of the wear-resistant head 21: Before the drawing die is actually used, first, the whole wear-resistant head 21 is moved into the circular groove of the mounting plate 231. And by initially adjusting the position of the locking block 212 on the mounting post 211, the locking block 212 rotates after entering the upper locking groove 232 (the upper locking groove 232 is provided with a rectangular chute for the locking block 212 to slide in downward. When the locking block 212 enters the rectangular chute, it rotates 90 degrees along the upper locking groove 232 and then enters the entrance communicating with the lower locking groove 232. After the mounting post 211 rotates 90 degrees and is pressed downward, at this time, the locking block 212 gradually enters the lower locking groove 232. Subsequently, the mounting post 211 is continuously rotated, so that the locking block 212 rotates along the lower locking groove 232 and enters and is clamped into the lower locking groove 232. Finally, the locking work with the lower locking groove 232 is completed through the locking block 212.

[0028] Meanwhile, when the mounting post 211 moves downward and enters the circular groove, the connecting rod and the arc-shaped slider 2332 will gradually slide into the mounting groove along the strip groove (in the initial state, the position of the strip groove on the mounting post 211, the position of the rectangular chute opened on the locking groove 232, and the position of the connecting rod are in the same vertical direction. During the downward movement of the mounting post 211, the preliminary positioning work of the mounting post 211 and the mounting plate 231 can be completed. At the same time, the height of the strip groove is relatively high. When the connecting rod enters the strip groove, there is still a certain distance between its upper end surface and the top of the strip groove. The purpose is to provide a pressing space for the mounting post 211 in the later stage. Subsequently, during the rotation process of the mounting post 211, the arc-shaped slider 2332 and the strip groove are staggered in position and enter the mounting groove. Due to the lack of an opening below, the arc-shaped slider 2332 and the connecting rod cannot be separated from the mounting post 211. Immediately, when the mounting post 211 is pressed downward, the pressing space reserved in the strip groove enables the connecting rod not to be blocked.

[0029] It should be noted that during the installation process of the wear-resistant head 21 and the mounting post 211, the outer walls of the two arc-shaped sliders 2332 are used to fit with the outer wall of the wear-resistant head 21. Since the centers of the two arc-shaped sliders 2332 coincide with the center of the mounting plate 231, after the two arc-shaped sliders 2332 enter the installation groove, the relative positions of the wear-resistant head 21 and the mounting plate 231 during the installation process can be ensured, and it is ensured that there will be no radial offset. While completing the radial limit of the wear-resistant head 21, the locking block 212 rotates downward and enters the inside of the mounting plate 231 to complete the limit with the mounting plate 231, and then ensure that the locking block 212 is located inside the locking groove 232 and there will be no axial position offset. The limit work of the wear-resistant head 21 can be synchronously completed through the same installation step, which not only simplifies the installation efficiency of the wear-resistant head 21 but also ensures the stability of the installation of the wear-resistant head 21. Finally, when the wear-resistant head 21 is connected to the mounting plate 231 as a whole and enters the guiding pillar 2, several arc-shaped plates 241 provided on the inner wall of the guiding pillar 2 and the shaft rollers provided on the arc-shaped plates 241 will adaptively complete the hugging limit work on the outer wall of the wear-resistant head 21, thereby further improving the stability of the wear-resistant head 21 during the later use process.

[0030] The change process of the guiding pillar 2 cooperating with the upper die during the downward pressing operation: When the wear-resistant head 21 completes the rapid installation, control the upper die of the drawing equipment to move downward. Since the upper end surface of the guiding pillar 2 is higher than the upper surface of the lower die, when the upper die moves downward, it will first contact the wear-resistant head 21 (in the initial state, when the wear-resistant head 21 completes the rapid installation, its conical top is higher than the top of the guiding pillar 2 and first contacts the upper die. When the upper die moves downward and contacts the wear-resistant head 21, if there is a slight deviation or angular error between the upper die and the wear-resistant head 21, the conical wear-resistant head 21 will play a certain compensation role, and due to the geometric characteristics of the cone, the wear-resistant head 21 will guide the upper die and the lower die to gradually align, and adjust the relative position between the upper die and the lower die in advance before the upper and lower dies contact, avoiding problems such as difficult adjustment and damage to the sheet caused by the upper die moving downward too far. As the upper die is gradually pressed down, the contact area between the conical wear-resistant head 21 and the upper die gradually increases. Through the increased contact area, the pressure can be gradually dispersed and transmitted, avoiding sudden pressure concentration causing impact and vibration of the die, and then protecting the die from damage. At the same time, when the wear-resistant head 21 is gradually pressed down and moves, several shaft rollers provided on the arc-shaped plate 241 inside the guiding pillar 2 rotate after contacting the outer wall of the wear-resistant head 21, and the smoothness of the wear-resistant head 21 during the downward movement is improved during the rotation process. By setting several shaft rollers, the wear-resistant head 21 is prevented from directly contacting the inner wall of the guiding pillar 2, reducing the friction between the wear-resistant head 21 and the guiding pillar 2 during the sliding process, thereby extending the service life of the wear-resistant head 21.

[0031] When the wear-resistant head 21 is pressed downward into the inside of the guide pillar 2 by the upper die, the upper die and the guide pillar 2 are in close contact with each other. The telescopic rod 22 is compressed, and the upper and lower rectangular grooves are connected. At this time, the abutting rods 2333 inside the two arc-shaped sliders 2332 approach synchronously under the pushing of the inclined surface of the wedge-shaped groove 27, and the outer wall of the wear-resistant head 21 is closely attached to the approaching ends of the two abutting rods 2333. The abutting work with the wear-resistant head 21 is gradually completed through the cooperation of the two abutting rods 2333 and the wedge-shaped groove 27, avoiding the vibration of the wear-resistant head 21 during the downward compression by the upper die.

[0032] As the upper die continues to move downward, the guide pillar 2 is gradually compressed downward. During the compression process, the two waist-shaped telescopic plates 251 hinged on the circular plate preferentially change the inclination direction. The sliding block 252 and the tension spring disperse the downward pressure on the guide pillar 2. The waist-shaped telescopic plate 251 arranged below the circular plate and the sliding block 252 connected by the tension spring can further complete the shock absorption work of the guide pillar 2, reducing the vibration between the guide pillar 2 and the lower die through the transmission of pressure. The multi-stage shock absorption can effectively avoid the damage of the guide pillar 2 caused by sudden pressure concentration during the working process.

[0033] During the compression process of the guide pillar 2, the bilateral rack 2531 arranged on the circular plate is driven to move downward. When the bilateral rack 2531 moves, the corresponding gears 2532 are driven to rotate through the meshing of the racks on both sides. When the two gears 2532 rotate, the scroll springs arranged inside them will be compressed first. The mating racks 2533 meshing on the far sides of the two gears 2532 move upward synchronously under the rotation of the corresponding gears 2532. During the upward movement of the two mating racks 2533, their upper end faces gradually come into close contact with the lower end faces of the corresponding strip plates 2431 and then push the strip plates 2431 upward. During the upward movement of the two strip plates 2431, the rectangular through grooves opened on their end faces gradually push the corresponding wedge-shaped top blocks 2432. The two wedge-shaped top blocks 2432 enter the rectangular grooves opened on the telescopic rod 22 during the synchronous approach process, thus completing the locking work of the telescopic rod 22. The synchronous approach of the two wedge-shaped top blocks 2432 ensures that the telescopic rod 22 will not rebound during the downward pressing work of the upper die. This protection method can avoid the vibration of the guide pillar 2 caused by the sudden spring-up of the telescopic rod 22 during the working process of the drawing equipment.

[0034] As the guiding pillar 2 is continuously pressed downwards, the strip plates 2431 on both sides move upwards and push against the corresponding M-shaped connecting brackets 242 upwards. After the two M-shaped connecting brackets 242 are pushed against synchronously, they approach each other. A number of roller shafts provided on the arc-shaped plate 241 are squeezed by the outer wall of the wear-resistant head 21 and enter the inside of the arc-shaped plate 241. Through the switching of the roller shafts and the arc-shaped plate 241, further radial limitation of the wear-resistant head 21 is achieved, ensuring that when the lower die is under pressure, the wear-resistant head 21 is held and limited and will not displace in the radial direction, so that it always remains concentric and coaxial with the guiding pillar 2.

[0035] The change process of the guiding pillar 2 during the reset process of the upper die: When the upper die completes the drawing of the sheet metal and resets upwards, due to the disappearance of the upper pressure, the circular plate drives the double-sided rack 2531 to move upwards preferentially. At this time, the volute springs inside the two side gears 2532 drive their respective gears 2532 to rotate during the reset process. When the rack 2533 and the strip plate 2431 move downwards, due to the disappearance of the pushing force on the outer walls of the two M-shaped connecting brackets 242, the arc-shaped plates 241 on both sides move away from each other and the roller shafts are re-fitted to the outer wall of the wear-resistant head 21. At this time, the wedge-shaped top blocks 2432 on both sides are still located inside the telescopic rod 22. Therefore, the wear-resistant head 21 is still in the locked state at this time. As the upper die resets, after the pressure on the guiding pillar 2 disappears, the double-sided rack 2531 inside it moves to the initial position, and the rectangular through grooves opened on the strip plates 2431 on both sides move to the same horizontal height as the wedge-shaped top blocks 2432. At this time, the wedge-shaped top blocks 2432 quickly reset and enter the inside of the rectangular through grooves. Then, the telescopic rod 22 drives the wear-resistant head 21 to reset. Through the sequential reset of the wear-resistant head 21 and the guiding pillar 2 after the drawing work is completed, it is avoided that the wear-resistant head 21 is suddenly bounced up by the force of the reset of the telescopic rod 22 and directly contacts the lower surface of the upper die, thereby damaging the die and the wear-resistant head 21.

[0036] The quick disassembly work of the wear-resistant head 21: As the wear-resistant head 21 is used for a long time, its wear will affect the alignment accuracy between the upper and lower dies. At this time, when replacing the wear-resistant head 21, only need to rotate the wear-resistant head 21 in the opposite direction of the locking groove 232 and then lift it upwards. After lifting, continue to repeat the rotation action. Finally, after aligning the connecting plate with the strip groove, the wear-resistant head 21 to be replaced can be taken out.

[0037] It should be emphasized that the die stroke rod with a quickly replaceable wear-resistant head has the following advantages: Advantage 1: During the installation process of the wear-resistant head 21 and the mounting post 211, the outer walls of the two arc-shaped sliders 2332 are used to achieve the fitting with the outer wall of the wear-resistant head 21, ensuring that it will not shift in the radial direction. While completing the radial limit of the wear-resistant head 21, the locking block 212 rotates downward and enters the interior of the mounting plate 231 to complete the limit with the mounting plate 231. Subsequently, it is ensured that the locking block 212 is located inside the locking groove 232 and will not shift axially. The limit work of the wear-resistant head 21 can be synchronously completed through the same installation step, which not only simplifies the installation efficiency of the wear-resistant head 21 but also ensures the stability of the installation of the wear-resistant head 21. Finally, when replacing the wear-resistant head 21, only need to rotate the wear-resistant head 21 in the opposite direction of the locking groove 232 and then lift it upward. After lifting, continue to repeat the rotation action. Finally, when the connecting plate is aligned with the strip groove, the wear-resistant head 21 to be replaced can be taken out. The quick installation and disassembly method of the wear-resistant head 21 enables it to be quickly disassembled and replaced when it is severely worn, without the need to replace the entire stroke rod, reducing the maintenance cost and improving the use efficiency and economy of the equipment.

[0038] Advantage 2: When the upper die moves downward and contacts the wear-resistant head 21, the conical wear-resistant head 21 will play a certain compensation role. And due to the geometric characteristics of the cone, the wear-resistant head 21 will guide the upper die and the lower die to gradually align. The increasing contact area can gradually disperse and transfer the pressure, avoiding the impact and vibration of the die caused by sudden pressure concentration, and then protecting the die from damage.

[0039] Advantage 3: When the wear-resistant head 21 is gradually pressed down and moves, several roller shafts arranged on the inner arc plate 241 of the guide pillar 2 rotate after contacting the outer wall of the wear-resistant head 21. During the rotation process, the smoothness of the wear-resistant head 21 moving downward is improved. By arranging several roller shafts, it is avoided that the wear-resistant head 21 directly contacts the inner wall of the guide pillar 2, reducing the friction between the wear-resistant head 21 and the guide pillar 2 during the sliding process, thereby prolonging the service life of the wear-resistant head 21.

[0040] Advantage 4: When the guide pillar 2 is continuously pressed down, the strip plates 2431 on both sides move upward and push the corresponding M-shaped connecting frames 242 upward. After the two M-shaped connecting frames 242 are synchronously pushed, they approach each other. Several roller shafts arranged on the arc plate 241 are squeezed by the outer wall of the wear-resistant head 21 and enter the interior of the arc plate 241. Through the switching between the roller shafts and the arc plate 241, the purpose is to further limit the radial direction of the wear-resistant head 21 by the clamping of the arc plate 241, ensuring that when the lower die is under pressure, the wear-resistant head 21 will not shift in the radial direction due to being clamped and limited, so that it is always concentric and coaxial with the guide pillar 2.

[0041] Advantage Five: During the downward pressing of the upper mold, the two wedge-shaped top blocks 2432 enter the interior of the rectangular slots formed on the telescopic rod 22 during the synchronous approaching process to complete the locking of the telescopic rod 22. As the upper mold resets, after the pressure on the guiding pillar 2 disappears, the double-sided rack 2531 inside it moves to the initial position, and the rectangular through slots formed on the two side strip plates 2431 move to the position at the same horizontal height as the wedge-shaped top blocks 2432. At this time, the wedge-shaped top blocks 2432 quickly reset and enter the interior of the rectangular through slots. Then, the telescopic rod 22 drives the wear-resistant head 21 to reset. Through the sequential reset of the wear-resistant head 21 and the guiding pillar 2 after the drawing operation, it is avoided that the wear-resistant head 21 suddenly bounces up due to the force of the reset of the telescopic rod 22 and directly contacts the lower surface of the upper mold, thereby damaging the mold and the wear-resistant head 21.

[0042] 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 foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mold travel rod with a quickly replaceable wear-resistant head, characterized in that: include: Support seat; A guide pillar connected to the external drawing equipment body, the guide pillar comprising a wear-resistant head, the wear-resistant head is arranged inside the guide pillar through a telescopic rod and is coaxially installed with the guide pillar, the outer wall of the telescopic rod is symmetrically provided with two rectangular grooves, the telescopic rod is provided with a combination component for quick installation and removal of the wear-resistant head, the inner part of the guide pillar and the outer wall of the wear-resistant head are symmetrically provided with an embracing group, and an adjusting component for adjusting the position of the embracing group is provided below the telescopic rod; The top of the wear-resistant head is set in a cone shape, the lower end surface of the wear-resistant head is fixedly provided with a mounting column with a mounting groove along the circumferential direction, a locking block is fixedly provided on the side of the mounting column away from the wear-resistant head, and the outer wall of the mounting groove is provided with two strip grooves; Among them, the combining assembly includes a mounting plate fixedly arranged on the upper end surface of the telescopic rod and abutting against the lower end surface of the mounting column, a circular groove is opened downward at the center position of the mounting plate, and two locking grooves of different heights are opened downward on the inner wall of the circular groove, and two matching parts are fixedly arranged on the upper end surface of the mounting plate, and the two matching parts are located inside the mounting groove of the mounting column and are symmetrically installed according to the matching groove.

2. A mold travel rod with a quickly replaceable wear-resistant head according to claim 1, characterized in that: The mating part includes an inverted L-shaped supporting plate fixedly arranged on the upper end surface of the mounting plate, and an arc-shaped sliding block located inside the mounting groove is fixedly arranged on one end of the inverted L-shaped supporting plate close to the circular groove through a connecting rod, and a clamping rod is slidably arranged inside the arc-shaped sliding block, one end of the clamping rod passes through the arc-shaped sliding block and intermittently cooperates with the outer wall of the mounting column, and the other end of the clamping rod slides through the connecting plate and the inverted L-shaped supporting plate and abuts against the inner wall of the guide pillar.

3. A mold travel rod with a quickly replaceable wear-resistant head according to claim 1, characterized in that: The guide pillar is a telescopic part and is fixedly arranged on the upper end surface of the support seat. The inner wall of the guide pillar is provided with two semicircular groove groups symmetrically according to its center of circle. The two engaging groups are respectively arranged inside the two semicircular groove groups. Each semicircular groove group includes three arc grooves distributed in the up and down directions. The inner wall of the guide pillar is also provided with a wedge-shaped groove corresponding to the position of the two clamping rods, and the inclined surface of the wedge-shaped groove gradually decreases from top to bottom.

4. A mold travel rod with a quickly replaceable wear-resistant head according to claim 3, characterized in that: The holding group includes three arc plates slidably arranged inside corresponding arc grooves, and one side wall of the three arc plates close to the wear-resistant head is rotatably provided with a plurality of axial rollers distributed in the up and down directions and attached to the outer wall of the wear-resistant head, and the plurality of axial rollers are slidably arranged on the outer wall of the arc plate by springs, and the friction between the wear-resistant head and the guide pillar when the wear-resistant head is pressed downward by the plurality of axial rollers is reduced, thereby extending the service life of the wear-resistant head, and an M-type connecting frame is fixedly arranged on the other side of the three arc plates through a connecting rod, and the M-type connecting frame connects the three arc plates into a whole and is provided with a chamfer on the lower end surface of the M-type connecting frame, and an adjustment part is also connected to the inside of the guide pillar and below the M-type connecting frame.

5. A mold travel rod with a quickly replaceable wear-resistant head according to claim 4, characterized in that: The adjustment member includes two strip plates corresponding to the positions of the M-shaped connecting frame and slidingly passing through the guide pillars. The two strip plates corresponding to the chamfered positions of the M-shaped connecting frame are also provided with chamfers, and a number of rollers are rotatably installed on the inclined surfaces of the chamfers of the strip plates. Rectangular through grooves are respectively provided on the sides where the two strip plates are close to each other. A wedge-shaped top block is installed inside the rectangular through groove, which is slidably arranged inside the guide pillar and the other end of which is located inside the rectangular groove of the telescopic rod. The upper end surface of the wedge-shaped top block is in contact with the upper inner wall of the rectangular through groove.

6. A mold travel rod with a quickly replaceable wear-resistant head according to claim 1, characterized in that: The adjustment component includes a circular plate located inside the guide pillar and fixedly connected to the lower end surface of the telescopic rod. The lower end surface of the circular plate is hingedly provided with two waist-shaped telescopic plates. The other end of the waist-shaped telescopic plate is hingedly provided with a sliding block that is slidably arranged inside the guide pillar through a tension spring. A driving group is also arranged between the two waist-shaped telescopic plates and below the circular plate.

7. A mold travel rod with a quickly replaceable wear-resistant head according to claim 6, characterized in that: The driving group includes a double-sided rack fixedly arranged on the lower end surface of the circular plate, and the teeth on both sides of the double-sided rack are respectively meshed with gears with internally installed spiral springs and rotatably connected to the guide pillars. The two sides of the two gears away from the double-sided racks are respectively meshed with matching racks that slide inside the guide pillars along the up and down directions.

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