Steel back flat gage movable positioning die

Abstract

The application belongs to the technical field of mold processing, and particularly relates to a steel back pressure edge movable positioning mold, and the following scheme is provided, which comprises a bottom plate, the top of the bottom plate is provided with a detachably installed lower base plate, the top of the lower base plate is provided with a lower mold plate, and the bottom plate, the lower base plate and the lower mold plate are connected through fixing screw assemblies and fixing pin assemblies; the top of the lower mold plate is provided with a detachably installed concave mold plate; the concave mold plate, the movable insert and the concave mold insert are arranged, so that the upper mold and the lower mold can be assembled by simply replacing the inserts without being replaced; the end of the movable insert and the concave mold insert in the opposite direction is designed in an arc structure, so that convenient chamfering operation can be performed in the stamping forming process of the brake steel back; meanwhile, the movable insert and the concave mold insert are in a resistance structure with the inner side of the concave mold plate, and the movable insert and the concave mold insert are installed through screws, so that corresponding inserts can be easily replaced when different size chamfering operations are performed.

Description

Technical Field

[0001] This invention relates to the field of mold processing technology, and in particular to a steel back pressing edge movable positioning mold. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses dies mounted on a press to apply pressure to materials at room temperature, causing them to separate or plastically deform, thereby obtaining the desired parts.

[0003] During the stamping process of brake steel backing, it is necessary to chamfer its arc edge to form a bevel. Existing bevel stamping processes usually rely on dedicated pneumatic punch presses and matching molds. The upper and lower dies of such molds are usually equipped with matching positioning rods and positioning holes (as positioning structures) and are integrally formed with the mold body to achieve positioning and avoidance during stamping.

[0004] However, when it comes to producing products, several drawbacks arise, mainly as follows: On the one hand, when producing different models of products, it is often necessary to replace the entire upper and lower molds, which is quite cumbersome. For general-purpose plate structures, a uniform stamping force is provided. Therefore, when changing different models of brake steel back products, only the inserts need to be replaced to adapt them. On the other hand, during the demolding process, when a small number of ejector pins are ejected, the ejection dimensions are prone to differences. Uneven ejection force can easily lead to product deformation or warping, or even product breakage.

[0005] Therefore, a steel-backed pressing edge movable positioning mold is needed. Summary of the Invention

[0006] This invention proposes a movable positioning mold for steel backing edge pressing, which solves the problem that in the prior art, when different models of products need to be produced, it is often necessary to replace the entire upper and lower molds, which is a relatively cumbersome operation. For general plate structures, it provides a uniform stamping force, so when changing different models of brake steel backing products, only the inserts need to be replaced to adapt. On the other hand, during the demolding process, when a small number of ejector pins are ejected, the ejection dimensions are prone to differences, which can easily lead to product deformation or warping due to uneven ejection force, or even product breakage.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A steel back pressing edge movable positioning mold includes a base plate, a detachable lower pad plate on the top of the base plate, and a lower template plate on the top of the lower pad plate. The base plate, the lower pad plate, and the lower template plate are connected by a fixing screw assembly and a fixing pin assembly.

[0009] The lower template has a detachable recessed template at its top, and the lower template and the recessed template are connected by a fixing screw assembly.

[0010] The inner side of the concave template is provided with a detachable movable insert, the side of the movable insert is provided with a material ejector core, and the side of the material ejector core is provided with a concave mold insert connected to the inner sidewall of the concave template.

[0011] Preferably, the opposite ends of the movable insert and the die insert are designed with an arc shape, and the movable insert and the die insert form a resisting structure with the inner side of the die plate.

[0012] Preferably, the fixing screw assembly includes a fixing screw top member, the outer periphery of the end of the fixing screw top member is provided with a wedge-shaped member for locking, the end of the fixing screw top member is fixedly connected to a screw shaft, the end of the screw shaft is threadedly sleeved with a screw sleeve, and the end of the screw sleeve is fixedly connected to a screw blade.

[0013] Preferably, the fixing pin assembly includes a fixing bottom pin, the end of which is designed with an arc-shaped groove, and a fixing pin sleeve is threaded onto the end of the fixing bottom pin. Circular slots are provided on both sides of the fixing pin sleeve near the end, and a limiting ball for limiting is provided inside the circular slot.

[0014] Preferably, the bottom of the base plate is provided with a pin mechanism, the outer side of the base plate is provided with a support bracket, the top and bottom sides of the support bracket are provided with a hydraulic press for lifting, and the bottom of the hydraulic press is provided with a detachable pressing mechanism.

[0015] Preferably, the bottom of the pressing mechanism is provided with a cover plate, and the bottom of the cover plate is provided with a detachable upper pad plate. The cover plate and the upper pad plate are connected by a fixing pin assembly. The bottom of the upper pad plate is provided with a detachable upper template plate. The upper pad plate and the upper template plate are connected by a fixing screw assembly.

[0016] Preferably, the bottom side of the ejector mechanism is provided with a servo motor, the output end of the servo motor is provided with a drive threaded blade, the top of the drive threaded blade is provided with a detachable drive gear, both ends of the drive gear are provided with rotating shafts, the side of the rotating shaft is provided with a sector-shaped driven gear, the end of the rotating shaft is provided with an outer frame for limiting the position, the side of the sector-shaped driven gear is provided with a detachable rack, the top of the rack is fixedly connected to an ejector pin, and the side of the rack is provided with a limiting groove fixed to the inner wall of the outer frame.

[0017] Preferably, the driving threaded blade is meshed with the driving gear, the driving gear and the sector driven gear are integrally fixed through a rotating shaft, the sector driven gear is meshed with the rack, the rack is limited and slidable with the limiting groove, and the ejector pin is through the base plate, the lower pad, the lower template and the concave template.

[0018] Preferably, the pressing mechanism includes a resisting rod located at the bottom of the hydraulic press. An upper tension spring connected to the bottom of the hydraulic press is sleeved around the upper half of the resisting rod. A limiting top plate is connected to the bottom of the tension spring. A limiting bottom plate is provided at the upper end of the lower half of the resisting rod. A lower tension spring sleeved around the lower half of the resisting rod is connected to the limiting bottom plate. A limiting slider is connected to the bottom of the lower tension spring. A limiting baffle is fixedly provided at the midpoint of the resisting rod. A connecting frame is sleeved around the outer side of the limiting slider.

[0019] Preferably, the limiting top plate and the limiting bottom plate are sleeved on the abutment rod to form a fixed structure, and the top of the connecting outer frame is provided with a rectangular groove for the limiting baffle to limit the position, and the limiting baffle has a sliding structure within the rectangular groove.

[0020] This invention proposes a movable positioning mold for steel back pressing edge. Compared with the prior art, the advantages of this invention are:

[0021] This invention, by setting up a concave template, a movable insert, and a concave die insert, allows for assembly by simply replacing the inserts without changing the upper and lower dies. Because the movable insert and the concave die insert have an arc-shaped design at their opposite ends, convenient chamfering can be performed during the stamping process of the brake steel backing. Simultaneously, the movable insert and the concave die insert form a resistive structure with the inner side of the concave template, and the movable insert and the concave die insert are installed with the lower template by screws, making it easy to replace the corresponding inserts when performing chamfering operations of different sizes.

[0022] This invention, by setting up an ejector pin mechanism, can avoid the problem of inconsistent ejection dimensions when the ejector pin is ejected. When the servo motor is operating, it drives the drive threaded blade to rotate. Through the meshing of the drive threaded blade with the drive gear, the drive gear, its associated rotating shaft, and the sector driven gear can be driven to rotate in tandem. Since the tooth patterns of the two sets of sector driven gears are aligned, the meshing structure between the sector driven gears and the rack can be used to control the lifting and lowering of the rack and ejector pin. At the same time, the limiting groove's limiting effect on the rack ensures that the rack and ejector pin remain vertical during lifting and lowering.

[0023] This invention, by setting a pressing mechanism, enables the lifting and lowering control of the upper template and the stamping operation. During hydraulic press operation, the resisting rod is driven downwards, connecting to a rectangular groove on the top of the outer frame. This groove serves as a limiting baffle, restricting the movement of the resisting rod. The size of the rectangular groove matches the pressing distance of the upper template. When the limiting baffle presses down to the bottom of the rectangular groove, the buffer structure formed by the limiting bottom plate, the lower tension spring, and the inner wall of the limiting slider, under the continuous action of the hydraulic press, provides the necessary buffering force during the stamping operation. Simultaneously, the connection structure between the hydraulic press, the upper tension spring, and the limiting top plate further enhances the buffering force.

[0024] 4. This invention, by setting a fixing screw assembly and a fixing pin assembly, can achieve the connection of the base plate, lower pad plate, and lower template, as well as the fixing of the cover plate, upper pad plate, and upper template. The wedge-shaped part set around the end of the fixing screw top piece can achieve the snap-fit ​​embedding of a single-layer template. The screw shaft and screw sleeve can achieve the merging and connection of multiple templates. The screw blade setting can achieve the merging and connection of additional templates. Simultaneously, the fixing pin assembly can achieve the snap-fit ​​connection of multiple templates. Because the end of the fixing bottom pin is designed with an arc-shaped groove, and the fixing pin sleeve has circular slots on both sides near the end, with limiting balls inside the circular slots for limiting the position, the spiral connection structure of the limiting balls, circular slots, and fixing bottom pin and fixing pin sleeve can achieve the snap-fit ​​connection of multiple templates. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a steel back pressure edge movable positioning mold in this invention;

[0026] Figure 2 This is a schematic diagram of the lower template structure of a steel back pressing edge movable positioning mold in this invention;

[0027] Figure 3 This is a schematic diagram of the upper template structure of a steel back pressing edge movable positioning mold in this invention;

[0028] Figure 4 This is an exploded view of the lower template structure of a movable positioning mold for steel back pressing edge in this invention;

[0029] Figure 5 This is a schematic diagram of the concave template structure of a steel back pressing edge movable positioning mold in this invention;

[0030] Figure 6 This is a schematic diagram of the ejector pin mechanism of a movable positioning mold for steel back pressing edge in this invention;

[0031] Figure 7This is a schematic diagram of the fixing screw top part and fixing bottom pin structure of a steel back pressing edge movable positioning mold in this invention;

[0032] Figure 8 This is an exploded view of the upper template structure of a movable positioning mold for steel back pressing edge in this invention;

[0033] Figure 9 This is a schematic diagram of the pressing mechanism of a movable positioning mold for steel back pressing edge in this invention.

[0034] In the diagram: 1. Base plate; 2. Lower pad plate; 3. Lower template; 4. Fixing screw top piece; 5. Screw shaft; 6. Screw sleeve; 7. Screw blade; 8. Fixing bottom pin; 9. Fixing pin sleeve; 10. Limiting ball; 11. Concave template; 12. Movable insert; 13. Concave mold insert; 14. Ejector core; 15. Ejector pin mechanism; 1501. Servo motor; 1502. Drive threaded blade; 1503. Drive gear; 1504. Rotating shaft; 1505. Sector-shaped driven gear 1506. Wheel; 1507. Outer frame; 1508. Rack; 1509. Ejector pin; 15000. Limiting slide groove; 16. Bracket; 17. Hydraulic press; 18. Pressing mechanism; 1801. Support rod; 1802. Upper tension spring; 1803. Limiting top plate; 1804. Limiting bottom plate; 1805. Lower tension spring; 1806. Limiting slider; 1807. Limiting baffle; 1808. Connecting outer frame; 19. Cover plate; 20. Upper pad; 21. Upper template. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-9 The present invention provides a technical solution: a steel back pressing edge movable positioning mold, including a base plate 1, a detachable lower pad 2 on the top of the base plate 1, a lower template 3 on the top of the lower pad 2, and the base plate 1, the lower pad 2 and the lower template 3 are connected by a fixing screw assembly and a fixing pin assembly.

[0037] The lower template 3 is provided with a detachable recessed template 11 at its top, and the lower template 3 and the recessed template 11 are connected by a fixing screw assembly;

[0038] The inner side of the concave template 11 is provided with a detachable movable insert 12, the side of the movable insert 12 is provided with a material ejector core 14, and the side of the material ejector core 14 is provided with a concave mold insert 13 connected to the inner side wall of the concave template 11.

[0039] Furthermore, the opposing ends of the movable insert 12 and the die insert 13 are designed with an arc shape, and the movable insert 12 and the die insert 13 form a resisting structure with the inner side of the die template 11. By using the die template 11, the movable insert 12, and the die insert 13, assembly can be completed by simply replacing the inserts without changing the upper and lower dies. Since the opposing ends of the movable insert 12 and the die insert 13 are designed with an arc shape, chamfering can be easily performed in the stamping process of the brake steel back. At the same time, the movable insert 12 and the die insert 13 form a resisting structure with the inner side of the die template 11, and the movable insert 12 and the die insert 13 are installed with the lower template 3 by screws, making it easy to replace the corresponding inserts when performing chamfering operations of different sizes.

[0040] Furthermore, the fixing screw assembly includes a fixing screw top part 4, the periphery of the end of the fixing screw top part 4 is provided with a wedge-shaped part for locking, the end of the fixing screw top part 4 is fixedly connected to a screw shaft 5, the end of the screw shaft 5 is threadedly sleeved with a screw sleeve 6, and the end of the screw sleeve 6 is fixedly connected to a screw blade 7; the wedge-shaped part provided on the periphery of the end of the fixing screw top part 4 can realize the locking and embedding function of a single layer template, the screw shaft 5 and the screw sleeve 6 can realize the merging and connection function of multiple sets of templates; and the screw blade 7 can realize the merging and connection function of additional templates.

[0041] Furthermore, the fixing pin assembly includes a fixing bottom pin 8, the end of which is designed with an arc-shaped groove. A fixing pin sleeve 9 is threaded onto the end of the fixing bottom pin 8. Circular slots are opened on both sides near the end of the fixing pin sleeve 9, and limiting balls 10 for limiting are provided inside the circular slots. The fixing pin assembly can be used to achieve the locking and connecting of multiple sets of templates. Because the end of the fixing bottom pin 8 is designed with an arc-shaped groove, and the fixing pin sleeve 9 has circular slots on both sides near the end, with limiting balls 10 for limiting inside the circular slots, the locking and connecting of multiple sets of templates can be achieved by using the limiting balls 10, the circular slots, and the spiral connection structure of the fixing bottom pin 8 and the fixing pin sleeve 9.

[0042] Furthermore, the bottom of the base plate 1 is provided with a pin mechanism 15, the outer side of the base plate 1 is provided with a support bracket 16, the top and bottom sides of the support bracket 16 are provided with a hydraulic press 17 for lifting, and the bottom of the hydraulic press 17 is provided with a detachable pressing mechanism 18. The setting of the pin mechanism 15 can avoid the problem of different ejection dimensions when the pin 1508 is ejected. The setting of the pressing mechanism 18 can realize the lifting control and stamping operation of the upper template 21.

[0043] Furthermore, the bottom of the pressing mechanism 18 is provided with a cover plate 19, and the bottom of the cover plate 19 is provided with a detachable upper pad 20. The cover plate 19 and the upper pad 20 are connected by a fixing pin assembly. The bottom of the upper pad 20 is provided with a detachable upper template 21, and the upper pad 20 and the upper template 21 are connected by a fixing screw assembly.

[0044] Furthermore, a servo motor 1501 is provided on the bottom side of the ejector mechanism 15. The output end of the servo motor 1501 is provided with a drive threaded blade 1502. A detachable drive gear 1503 is provided on the top of the drive threaded blade 1502. Rotating shafts 1504 are provided at both ends of the drive gear 1503. A sector-shaped driven gear 1505 is provided on the side of the rotating shaft 1504. An outer frame 1506 for limiting the position is provided at the end of the rotating shaft 1504. A detachable rack 1507 is provided on the side of the sector-shaped driven gear 1505. An ejector pin 1508 is fixedly connected to the top of the rack 1507. A limiting groove 1509 fixed to the inner wall of the outer frame 1506 is provided on the side of the rack 1507. By setting the ejector mechanism 15... This avoids the problem of inconsistent ejection dimensions when the ejector pin 1508 is ejected. When the servo motor 1501 is operating, it drives the drive threaded blade 1502 to rotate. Through the meshing of the drive threaded blade 1502 with the drive gear 1503, the drive gear 1503, its associated rotating shaft 1504, and the sector driven gear 1505 can be driven to rotate in tandem. Since the tooth patterns of the two sets of sector driven gears 1505 are aligned, the meshing structure between the sector driven gear 1505 and the rack 1507 can be used to control the lifting and lowering of the rack 1507 and the ejector pin 1508. At the same time, the limiting groove 1509 limits the rack 1507, ensuring that the rack 1507 and the ejector pin 1508 remain vertical during the lifting and lowering process.

[0045] Furthermore, the drive threaded blade 1502 meshes with the drive gear 1503, the drive gear 1503 and the sector driven gear 1505 are integrally fixed through the rotating shaft 1504, the sector driven gear 1505 meshes with the rack 1507, the rack 1507 and the limiting slide groove 1509 are in a limiting sliding structure, and the ejector pin 1508 is in a through structure with the base plate 1, the lower pad plate 2, the lower template 3 and the concave template 11; through the meshing of the drive threaded blade 1502 and the drive gear 1503, the drive gear 1503 and its associated rotating shaft 1504 and sector driven gear 1505 can be driven to rotate together; while the limiting slide groove 1509 limits the rack 1507, ensuring that the rack 1507 and the ejector pin 1508 remain vertical during the lifting and lowering process.

[0046] Furthermore, the pressing mechanism 18 includes a resisting rod 1801, which is located at the bottom of the hydraulic press 17. An upper tension spring 1802, connected to the bottom of the hydraulic press 17, is sleeved around the upper half of the resisting rod 1801. A limiting top plate 1803 is connected to the bottom of the tension spring 1802. A limiting bottom plate 1804 is provided at the upper end of the lower half of the resisting rod 1801. A lower tension spring 1805, sleeved around the lower half of the resisting rod 1801, is connected to the limiting bottom plate 1804. A limiting slider 1806 is connected to the bottom of the lower tension spring 1805. A limiting baffle 1807 is fixedly installed at the midpoint of the resisting rod 1801. A connecting frame 1808 is sleeved around the outer side of the limiting slider 1806. By setting the pressing mechanism 18, the upper template 21 can be pressed. The hydraulic press 17 performs lifting control and stamping operations. When the hydraulic press 17 is in operation, it will drive the resisting rod 1801 to press down. The rectangular groove opened on the top of the connecting outer frame 1808 can be used to limit the movement of the limit baffle 1807 during the movement of the resisting rod 1801. The size of the rectangular groove is consistent with the pressing distance of the upper template 21. When the limit baffle 1807 is pressed down to the bottom of the rectangular groove, the buffer structure formed by the limit bottom plate 1804, the lower tension spring 1805 and the inner wall of the limit slider 1806 under the continuous action of the hydraulic press 17 can realize the buffering force required during the stamping operation. At the same time, the connection structure between the hydraulic press 17 and the upper tension spring 1802 and the limit top plate 1803 can further enhance the buffering force.

[0047] Furthermore, the limiting top plate 1803 and the limiting bottom plate 1804 are sleeved on the abutment rod 1801 in a fixed structure. The top of the connecting outer frame 1808 is provided with a rectangular groove for the limiting baffle 1807 to limit the movement of the limiting baffle 1807. The limiting baffle 1807 has a sliding structure in the rectangular groove. The rectangular groove on the top of the connecting outer frame 1808 has the same size as the downward pressing distance of the upper template 21, which can be used to limit the movement of the limiting baffle 1807 during the movement of the abutment rod 1801. At the same time, when the limiting baffle 1807 is pressed down to the bottom of the rectangular groove, the buffer structure formed by the limiting bottom plate 1804, the lower tension spring 1805 and the inner wall of the limiting slider 1806 under the continuous action of the hydraulic press 17 can realize the buffer force required during the stamping operation.

[0048] Working principle: For this type of movable positioning mold for steel back pressing edge, the following operations can be performed;

[0049] First, the upper and lower mold components need to be assembled. The wedge-shaped part set on the periphery of the fixed screw top part 4 can realize the snap-fit ​​and embedding of a single layer of template. The screw shaft 5 and screw sleeve 6 can realize the merging and connection of multiple sets of templates. The screw blade 7 can realize the merging and connection of additional templates. At the same time, the fixed pin assembly can realize the snap-fit ​​and connection of multiple sets of templates. Since the end of the fixed bottom pin 8 is designed with an arc-shaped groove, and the fixed pin sleeve 9 has circular slots on both sides near the end, the inside of the circular slots is provided with a limiting ball 10 for limiting. The spiral sleeve structure of the limiting ball 10, the circular slots, and the fixed bottom pin 8 and the fixed pin sleeve 9 can realize the connection and snap-fit ​​of multiple sets of templates.

[0050] Next, by using the concave template 11, movable insert 12, and concave die insert 13, assembly can be completed by simply replacing the inserts without changing the upper and lower dies. Since the opposite ends of the movable insert 12 and the concave die insert 13 are designed with an arc shape, chamfering can be easily performed in the stamping process of the brake steel back. At the same time, the movable insert 12 and the concave die insert 13 form a resistive structure with the inner side of the concave template 11, and the movable insert 12 and the concave die insert 13 are installed with the lower template 3 by screws, making it easy to replace the corresponding inserts when performing chamfering operations of different sizes.

[0051] Next, a stamping operation is required. The hydraulic press 17 operates, driving the resisting rod 1801 to press down. The rectangular groove on the top of the connecting outer frame 1808 can be used to limit the movement of the resisting rod 1801 by the limiting baffle 1807. The size of the rectangular groove is consistent with the pressing distance of the upper template 21. When the limiting baffle 1807 is pressed down to the bottom of the rectangular groove, the buffer structure formed by the limiting bottom plate 1804, the lower tension spring 1805, and the inner wall of the limiting slider 1806 under the continuous action of the hydraulic press 17 can realize the buffering force required during the stamping operation. At the same time, the connection structure between the hydraulic press 17, the upper tension spring 1802, and the limiting top plate 1803 can further enhance the buffering force.

[0052] Finally, after the casting mold is completed, the top mold operation is required. The servo motor 1501 operates to drive the threaded blade 1502 to rotate. Through the meshing of the threaded blade 1502 with the drive gear 1503, the drive gear 1503, its associated rotating shaft 1504, and the sector driven gear 1505 can be driven to rotate in tandem. Since the tooth patterns of the two sets of sector driven gears 1505 are aligned, the meshing structure between the sector driven gear 1505 and the rack 1507 can be used to control the lifting and lowering of the rack 1507 and the ejector pin 1508. At the same time, the limiting groove 1509 limits the rack 1507, ensuring that the rack 1507 and the ejector pin 1508 remain vertical during the lifting and lowering process.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel backing edge movable positioning mold, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a detachable lower pad plate (2) at the top, and the lower pad plate (2) is provided with a lower template (3) at the top. The bottom plate (1), the lower pad plate (2) and the lower template (3) are connected by a fixing screw assembly and a fixing pin assembly. The lower template (3) is provided with a detachable recessed template (11) at its top, and the lower template (3) and the recessed template (11) are connected by a fixing screw assembly. The inner side of the concave template (11) is provided with a detachable movable insert (12), the side of the movable insert (12) is provided with a material ejector core (14), and the side of the material ejector core (14) is provided with a concave mold insert (13) connected to the inner side wall of the concave template (11). The bottom of the base plate (1) is provided with a pin mechanism (15), the outer side of the base plate (1) is provided with a support bracket (16), the top and bottom sides of the support bracket (16) are provided with a hydraulic press (17) for lifting, and the bottom of the hydraulic press (17) is provided with a detachable pressing mechanism (18). The pressing mechanism (18) includes a support rod (1801), which is located at the bottom of the hydraulic press (17). The upper half of the support rod (1801) is sleeved with an upper tension spring (1802) connected to the bottom of the hydraulic press (17). The bottom of the tension spring (1802) is connected to a limiting top plate (1803). The upper end of the lower half of the support rod (1801) is provided with a limiting bottom plate (1804). The limiting bottom plate (1804) is connected with a lower tension spring (1805) sleeved on the lower half of the support rod (1801). The bottom of the lower tension spring (1805) is connected to a limiting slider (1806). A limiting baffle (1807) is fixedly provided at the midpoint of the support rod (1801). The outer side of the limiting slider (1806) is sleeved with a connecting frame (1808). The limiting top plate (1803) and the limiting bottom plate (1804) are sleeved on the abutment rod (1801) to form a fixed structure. The top of the connecting outer frame (1808) is provided with a rectangular groove for the limiting baffle (1807) to limit the position. The limiting baffle (1807) has a sliding structure in the rectangular groove. The movable insert (12) and the die insert (13) are designed with an arc-shaped structure at their opposite ends, and the movable insert (12) and the die insert (13) are designed with a force-resisting structure against the inner side of the die plate (11). The fixing screw assembly includes a fixing screw top part (4), the outer periphery of the end of the fixing screw top part (4) is provided with a wedge-shaped part for locking, the end of the fixing screw top part (4) is fixedly connected to a screw shaft (5), the end of the screw shaft (5) is threadedly sleeved with a screw sleeve (6), and the end of the screw sleeve (6) is fixedly connected to a screw blade (7). The fixing pin assembly includes a fixing bottom pin (8), the end of which is designed with an arc-shaped groove, and a fixing pin sleeve (9) is threaded onto the end of the fixing bottom pin (8). The fixing pin sleeve (9) has circular slots on both sides near the end, and a limiting ball (10) for limiting is provided inside the circular slot. The bottom of the pressing mechanism (18) is provided with a cover plate (19), and the bottom of the cover plate (19) is provided with a detachable upper pad plate (20). The cover plate (19) and the upper pad plate (20) are connected by a fixing pin assembly. The bottom of the upper pad plate (20) is provided with a detachable upper template (21), and the upper pad plate (20) and the upper template (21) are connected by a fixing screw assembly.

2. The steel backing pressure edge movable positioning mold according to claim 1, characterized in that: The bottom side of the ejector mechanism (15) is provided with a servo motor (1501), the output end of the servo motor (1501) is provided with a drive thread blade (1502), the top of the drive thread blade (1502) is provided with a detachable drive gear (1503), the two ends of the drive gear (1503) are provided with a rotating shaft (1504), the side of the rotating shaft (1504) is provided with a sector driven gear (1505), the end of the rotating shaft (1504) is provided with an outer frame (1506) for limiting function, the side of the sector driven gear (1505) is provided with a detachable rack (1507), the top of the rack (1507) is fixedly connected with an ejector (1508), and the side of the rack (1507) is provided with a limiting groove (1509) fixed to the inner wall of the outer frame (1506).

3. The steel backing pressure edge movable positioning mold according to claim 2, characterized in that: The drive threaded blade (1502) meshes with the drive gear (1503), the drive gear (1503) and the sector driven gear (1505) are fixed together by a rotating shaft (1504), the sector driven gear (1505) meshes with the rack (1507), the rack (1507) and the limiting slide groove (1509) are in a limiting sliding structure, and the ejector pin (1508) is in a through structure with the base plate (1), the lower pad plate (2), the lower template (3) and the concave template (11).

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