Lock catch one-time forming die and machining process thereof

Abstract

The invention relates to the technical field of lock catch forming dies, in particular to a lock catch one-time forming die and a machining process thereof.The lock catch one-time forming die comprises a base, a supporting plate is fixedly connected to the surface of the base, and a first extrusion mechanism is arranged at the lower end of the supporting plate and comprises a shell; the device comprises a shell, a first sliding rod is slidably connected to the interior of the shell, a first mold is slidably connected to the surface of the first sliding rod, a spraying mechanism is arranged in the shell, a second extrusion mechanism is arranged at the lower end of the shell, and a pushing mechanism is arranged at the upper end of the first mold. Firstly, the martensitic stainless steel lock catch is preliminarily bent through the shell, part of internal stress is released, after preliminary pressing, the surface of a material possibly has tiny concave-convex parts, friction between the material and a mold is larger during extrusion, extreme pressure emulsion is sprayed to the bent position, the emulsion looks like a layer of lubricating oil, and the situation that the lock catch is scratched or clamped by the mold due to too large friction is avoided; and surface cracks are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lock buckle forming dies, in particular to a lock buckle one-step forming die and a processing technology thereof. Background Art

[0002] The one-shot molding die for a lock buckle is a special mold that can complete the final shape of the lock buckle part through a single processing step. Its core lies in the "one-shot molding" technology, that is, the material (such as ABS engineering plastic, stainless steel plate, etc.) is directly formed into a finished product that meets the design requirements after a one-time injection molding, stamping or molding process in the mold, without the need for secondary processing or assembly. The typical structure includes upper and lower mold components, a guide system (such as guide columns and guide column bushings) and a demolding mechanism (such as an inclined ejector rod or an inclined guide column slider). The coaxiality error of some high-precision molds (such as U-shaped car door lock buckle molds) can be controlled within ±0.003mm. The one-shot molding die for the lock buckle achieves efficient, precise and low-cost production through a single processing, and is widely used in automobiles, smart homes, electronics and other fields.

[0003] In the existing lock buckle one-shot molding die, the bending and cracking of the lock buckle during the one-shot molding process is closely related to the mechanical properties of the material (such as ductility, toughness, brittleness), component characteristics and molding process. The core reason for the cracking of the lock buckle during the bending one-shot molding process is that the material cannot release the tensile and compressive stresses generated by bending through plastic deformation, resulting in local stress exceeding the fracture strength. Martensitic stainless steel (such as 420 and 440 series) has a high carbon content (0.15%~1.2%) and a hard and brittle martensite structure at room temperature. It has a strong tendency to work hardening when bent, and the outer tensile stress can easily lead to cracking. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a lock buckle one-step molding die and a processing technology thereof.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a one-time molding mold for a lock buckle, comprising a base, a support plate fixedly connected to the surface of the base, a first extrusion mechanism for preliminarily extruding and bending the lock buckle at the lower end of the support plate, the first extrusion mechanism comprising a shell, a first sliding rod slidably connected to the interior of the shell, a first mold slidably connected to the surface of the first sliding rod, a spraying mechanism for spraying extreme pressure emulsion on the bent part of the preliminarily extruded and bent lock buckle at the interior of the shell, a second extrusion mechanism for further extruding the lock buckle into a U shape at the lower end of the shell, and a pushing mechanism for pushing the formed lock buckle to the ground at the upper end of the first mold.

[0006] Preferably, the first extrusion mechanism includes a hydraulic cylinder, the non-output end of the hydraulic cylinder is installed on the surface of the support plate, the output end of the hydraulic cylinder is fixedly connected to a shell, the lower end of the first mold is fixedly connected to a second sliding rod, the outside of the second sliding rod is provided with a first spring, the lower end of the first spring is in contact with the upper end of the base, the surface of the second sliding rod is slidably connected to the base, a first hollow groove is provided inside the shell, a plurality of small holes are provided inside the shell, and the upper end of the shell is fixedly connected to a telescopic barrel.

[0007] Preferably, the first extrusion mechanism further includes a telescopic plate, and the interior of the telescopic barrel is elastically connected to the telescopic plate via a compression spring.

[0008] Preferably, the spraying mechanism includes a first sleeve, the first sleeve is fixedly connected to the first sliding rod, the upper end of the first sleeve is fixedly connected to a second spring, the upper end of the second spring is fixedly connected to the shell, the interior of the shell is fixedly connected to a first piston, the inner bottom end of the first sleeve is fixedly connected to a hose, and the hose is fixedly connected to the shell.

[0009] Preferably, the second extrusion mechanism includes a first connecting rod, which is fixedly connected to the shell, the lower end of the first connecting rod is fixedly connected to a first inclined slider, one end of the first inclined slider is fitted with a second inclined slider, and the surface of the second inclined slider is fixedly connected to a second mold.

[0010] Preferably, the second extrusion mechanism further includes a sliding block, one end of the second mold is fixedly connected to the sliding block, and one end of the sliding block is elastically connected to the second sleeve via a compression spring.

[0011] Preferably, the pushing mechanism includes a third sliding rod, which is fixedly connected to the shell, the lower end of the third sliding rod is fixedly connected to the second piston, the outer sleeve of the second piston is provided with a fifth sleeve, the upper end of the second piston is fixedly connected to a third spring, the upper end of the third spring is fixedly connected to the fifth sleeve, the inner part of the fifth sleeve is slidably connected to the fourth sliding rod, and the interior of the fourth sliding rod is provided with a second hollow groove.

[0012] Preferably, the pushing mechanism also includes a third sleeve, the outer portion of the fourth sliding rod is sleeved with a third sleeve, the third sleeve is fixedly connected to the inside of the fifth sleeve, a third hollow groove is opened inside the fifth sleeve, the surface of the fifth sleeve is fixedly connected to the fourth sleeve, one end of the fourth sleeve is fixedly connected to the first mold, the inner portion of the fourth sleeve is slidably connected to the third piston, one end of the third piston is fixedly connected to the second connecting rod, one end of the third piston is fixedly connected to the fourth spring, one end of the fourth spring is fixedly connected to the fourth sleeve, and one end of the second connecting rod is fixedly connected to the baffle.

[0013] Preferably, the method specifically includes the following steps: S1, when in use, the hydraulic cylinder is started to move downward, and the housing is driven to move downward by the downward movement of the hydraulic cylinder, and the downward movement of the housing performs a preliminary bending on the lock buckle; S2, through the structure set, after the lock is initially bent, the shell continues to press downward, which will drive the liquid inside the first hollow groove in the shell to be discharged through the small hole to the bend of the lock; S3: After adding liquid to the bend of the lock buckle, the housing continues to move downward, driving the first connecting rod downward. The downward movement of the first connecting rod drives the two second molds closer together, and the two second molds squeeze the lock buckle again. At step S4, as the housing continues to move downward, the telescopic plate compresses the compression spring inside the telescopic barrel. As the two second molds squeeze the lock buckle again, the telescopic plate retracts into the telescopic barrel. At this point, the housing continues to move downward and fits into the first mold, further squeezing the lock buckle into a U shape. S5, when the hydraulic cylinder drives the shell to move upward and the telescopic plate moves away from the first mold, after the telescopic plate moves away from the first mold, the shell moves upward and drives the baffle to push the lock to the ground, pushing the rear baffle to automatically reset.

[0014] Beneficial effects of the present invention: The lock buckle one-step forming mold and the processing technology thereof described in the present invention adopt a hydraulic cylinder that moves downward to drive the shell to move downward, and the shell performs preliminary bending on the lock buckle during the downward movement.

[0015] The lock buckle one-time molding mold described in the present invention has a set structure. After the lock buckle is initially bent, the shell continues to press downward. At this time, the liquid inside the first hollow groove in the shell will be discharged through the small hole to the bent part of the lock buckle. The liquid is an extreme pressure emulsion with the following ingredients: mineral oil base + extreme pressure additive.

[0016] The lock buckle one-time molding mold described in the present invention adopts a set structure. After liquid is added to the bend of the lock buckle, the shell continues to move downward to drive the two second molds to approach each other. The two second molds squeeze the lock buckle again. Combined with the mixed extreme pressure emulsion, the lock buckle can be lubricated, cooled and anti-wear to avoid scratches and cracking.

[0017] The lock buckle one-time forming mold described in the present invention has a set structure. While the two second molds squeeze the lock buckle again, the telescopic plate shrinks into the telescopic barrel. At this time, the shell continues to move downward to fit with the first mold. In this process, the lock buckle is further squeezed into a U shape. Through the set structure, when the hydraulic cylinder drives the shell to move upward and the telescopic plate moves away from the first mold, after the telescopic plate moves away from the first mold, the shell moves upward and drives the baffle to push the lock buckle to the ground, and then pushes the rear baffle to automatically reset.

[0018] The lock buckle one-time forming mold described in the present invention first performs a preliminary bending on the martensitic stainless steel lock buckle through the shell to release some of the internal stress. After the initial pressing, there may be slight bumps on the surface of the material, and the friction with the mold will be greater during further extrusion. Extreme pressure emulsion is sprayed at the bend, and the emulsion is like a layer of lubricating oil, which prevents the lock buckle from being scratched or stuck by the mold due to excessive friction, thereby reducing surface cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 Schematic diagram of the connection structure between the support plate and the hydraulic cylinder; Figure 3 It is a schematic diagram of the connection structure between the shell and the telescopic barrel; Figure 4 Schematic diagram of the connection structure between the third sliding rod and the fifth sleeve; Figure 5 Schematic diagram of the connection structure between the first connecting rod and the first inclined sliding block; Figure 6 Schematic diagram of the connection structure between the baffle and the first mold; Figure 7 Schematic diagram of the connection structure between the housing and the first sliding rod; Figure 8 is a cross-sectional view of the interior of the shell; Figure 9 Schematic diagram of the connection structure between the second piston and the third spring; Figure 10 for Figure 9 The enlarged structural diagram of part A is shown.

[0021] In the figure: 100, base; 200, support plate; 300, first extrusion mechanism; 301, hydraulic cylinder; 302, housing; 3021, first hollow groove; 3022, small hole; 303, first sliding rod; 304, first mold; 305, second sliding rod; 306, first spring; 307, telescopic barrel; 308, telescopic plate; 400, spraying mechanism; 401, first sleeve; 402, second spring; 403, first piston; 404, hose; 500, second extrusion mechanism; 501, first connecting Rod; 502, first inclined sliding block; 503, second inclined sliding block; 504, second mold; 505, sliding block; 506, second sleeve; 600, pushing mechanism; 601, third sliding rod; 602, second piston; 603, third spring; 604, fourth sliding rod; 6041, second hollow groove; 605, third sleeve; 606, fourth sleeve; 607, third piston; 608, second connecting rod; 609, fourth spring; 610, baffle; 611, fifth sleeve; 6111, third hollow groove. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1-10 As shown, a lock buckle one-time molding mold described in the present invention includes a base 100, a support plate 200 is fixedly connected to the surface of the base 100, and a first extrusion mechanism 300 for preliminarily extruding and bending the lock buckle is provided at the lower end of the support plate 200, and the first extrusion mechanism 300 includes a shell 302, a first sliding rod 303 is slidably connected to the interior of the shell 302, and a first mold 304 is slidably connected to the surface of the first sliding rod 303, and a spraying mechanism 400 for spraying extreme pressure emulsion on the bent part of the lock buckle that is preliminarily extruded and bent is provided inside the shell 302, and a second extrusion mechanism 500 for further extruding the lock buckle into a U shape is provided at the lower end of the shell 302, and a pushing mechanism 600 for pushing the formed lock buckle to the ground is provided at the upper end of the first mold 304.

[0024] Specifically, the first extrusion mechanism 300 includes a hydraulic cylinder 301, the non-output end of the hydraulic cylinder 301 is mounted on the surface of the support plate 200, the output end of the hydraulic cylinder 301 is fixedly connected to a housing 302, the lower end of the first mold 304 is fixedly connected to a second sliding rod 305, the outer portion of the second sliding rod 305 is sleeved with a first spring 306, the lower end of the first spring 306 is in contact with the upper end of the base 100, the surface of the second sliding rod 305 is slidably connected to the base 100, the interior of the housing 302 is provided with a first hollow groove 3021, the interior of the housing 302 is provided with several The small hole 3022, the upper end of the shell 302 is fixedly connected to the telescopic barrel 307, and the interior of the telescopic barrel 307 is elastically connected to the telescopic plate 308 through a compression spring; when in use, the hydraulic cylinder 301 is started to move downward, and the downward movement of the hydraulic cylinder 301 will drive the shell 302 to move downward, and the downward movement of the shell 302 will drive the first sliding rod 303 to move downward. At this time, the shell 302 will be close to the first mold 304, and the downward movement of the shell 302 will perform a preliminary bend on the lock buckle; the downward movement of the hydraulic cylinder 301 is used to drive the shell 302 to move downward, and the shell 302 performs a preliminary bend on the lock buckle when it moves downward.

[0025] In addition, the spraying mechanism 400 includes a first sleeve 401, which is fixedly connected to the first sliding rod 303, and the upper end of the first sleeve 401 is fixedly connected to the second spring 402, and the upper end of the second spring 402 is fixedly connected to the shell 302, and the interior of the shell 302 is fixedly connected to the first piston 403, and the internal bottom end of the first sleeve 401 is fixedly connected to the hose 404, and the hose 404 is fixedly connected to the shell 302; the shell 302 is filled with liquid, the height of the liquid is lower than the height of the first piston 403, and the liquid is an extreme pressure emulsion, with ingredients: mineral oil base + extreme pressure additives containing sulfur and phosphorus compounds + emulsifiers, and the water-based use concentration after dilution is 8%~12%, and the extreme pressure agent forms a chemical reaction film with the stainless steel at the contact interface mold, withstands compressive stress of more than 1000MPa, reduces the friction coefficient to below 0.05, and ordinary engine oil is 0.15, and the water-based system absorbs bending friction heat and temperature. The temperature can be controlled below 60°C to inhibit the aggravation of work hardening. After the lock buckle is initially bent, the shell 302 continues to press downward. The shell 302 continues to press downward, and the first sliding rod 303 will move upward, driving the first sleeve 401 to move upward. The upward movement of the first sleeve 401 will compress the second spring 402. The first sleeve 401 is similar to an upward-opening container. When the first sleeve 401 moves upward and contacts the first piston 403, the first piston 403 will squeeze out the liquid in the first sleeve 401. The liquid in the first sleeve 401 is squeezed out through the hose 404 into the first hollow groove 3021. The liquid inside the first hollow groove 3021 in the shell 302 will be discharged to the bent part of the lock buckle through the small hole 3022. Through the provided structure, after the lock buckle is initially bent, the shell 302 continues to press downward, which will drive the liquid inside the first hollow groove 3021 in the shell 302 to be discharged to the bent part of the lock buckle through the small hole 3022.

[0026] Furthermore, the second extrusion mechanism 500 includes a first connecting rod 501, which is fixedly connected to the shell 302, and the lower end of the first connecting rod 501 is fixedly connected to a first inclined slider 502, one end of the first inclined slider 502 is attached to a second inclined slider 503, and the surface of the second inclined slider 503 is fixedly connected to a second mold 504, one end of the second mold 504 is fixedly connected to a sliding block 505, and one end of the sliding block 505 is elastically connected to a second sleeve 506 through a compression spring; when the shell 302 moves downward, the first connecting rod 501 will move downward, and the downward movement of the first connecting rod 501 will drive the first inclined slider 502 to move downward, and the first inclined slider 504 will move downward. 02's downward movement will cooperate with the second inclined slider 503. The downward movement of the first inclined slider 502 drives the two second inclined sliders 503 to approach each other. The approach of the two second inclined sliders 503 to each other will drive the two second molds 504 to approach each other. The second mold 504 is limited by the sliding block 505 and the second sleeve 506, so that the second mold 504 can only move horizontally. The two second molds 504 approaching each other will squeeze the lock buckle again. With the set structure, after adding liquid at the bend of the lock buckle, the shell 302 continues to move downward to drive the two second molds 504 to approach each other. The two second molds 504 squeeze the lock buckle again. Combined with the mixed extreme pressure emulsion, the lock buckle can be lubricated, cooled and anti-wear to avoid scratches and cracking.

[0027] When the locking cam 306 is in the closed position, the locking cam 306 is in the closed position, and ...

[0028] It is worth mentioning that the pushing mechanism 600 includes a third sliding rod 601, which is fixedly connected to the housing 302, and the lower end of the third sliding rod 601 is fixedly connected to the second piston 602, and the outer portion of the second piston 602 is provided with a fifth sleeve 611, and the upper end of the second piston 602 is fixedly connected to a third spring 603, and the upper end of the third spring 603 is fixedly connected to the fifth sleeve 611, and the inner portion of the fifth sleeve 611 is slidably connected to the fourth sliding rod 604, and the inner portion of the fourth sliding rod 604 is provided with a second hollow groove 6041, and the outer portion of the fourth sliding rod 604 is provided with a third sleeve 605. The third sleeve 605 is fixedly connected to the interior of the fifth sleeve 611. A third hollow groove 6111 is formed inside the fifth sleeve 611. A fourth sleeve 606 is fixedly connected to the surface of the fifth sleeve 611. One end of the fourth sleeve 606 is fixedly connected to the first mold 304. A third piston 607 is slidably connected to the interior of the fourth sleeve 606. One end of the third piston 607 is fixedly connected to a second connecting rod 608. One end of the third piston 607 is fixedly connected to a fourth spring 609. One end of the fourth spring 609 is fixedly connected to the fourth sleeve 606. One end of the second connecting rod 608 is fixedly connected to a baffle 610.The initial position of the second piston 602 is at the upper end of the fifth sleeve 611. At this time, the third spring 603 is in a reset state. After the lock is formed, the second piston 602 is at the bottom end of the fifth sleeve 611. At this time, the outside air enters the fifth sleeve 611 through the third hollow groove 6111. The upward movement of the second piston 602 compresses the air in the fifth sleeve 611. When the third sliding rod 601 moves upward, it drives the second piston 602 to move upward. The upward movement of the second piston 602 compresses the air inside the fifth sleeve 611, and the air inside the fifth sleeve 611 enters the fourth sleeve 606. The air inside the fourth sleeve 606 pushes the third piston 607 to move to one end. The movement of the third piston 607 to one end drives the second connecting rod 608 to move to one end. The movement of the second connecting rod 608 to one end drives the baffle 610 to one end. The movement of the baffle 610 to one end pushes the processed lock to the ground. 2 is provided with a groove inside the lower end. When the shell 302 is fitted with the first mold 304, the second connecting rod 608 and the baffle 610 will enter the groove at the lower end of the shell 302. The upward movement of the second piston 602 will drive the fourth sliding rod 604 to move upward. The upward movement of the fourth sliding rod 604 will drive the second hollow groove 6041 away from the third sleeve 605. After the fourth sliding rod 604 is away from the third sleeve 605, the high-pressure gas inside the fourth sleeve 606 and the fifth sleeve 611 will be discharged from the second hollow groove 6041 to the outside air. At this time, the third piston 607 will be reset to a position close to the fourth sliding rod 604 under the elastic force of the fourth spring 609. Through the structure provided, when the hydraulic cylinder 301 drives the shell 302 to move upward and the telescopic plate 308 is away from the first mold 304, after the telescopic plate 308 is away from the first mold 304, the upward movement of the shell 302 will drive the baffle 610 to push the lock to the ground, pushing the rear baffle 610 to automatically reset. ;

[0029] Working principle: When the present invention is in use, the hydraulic cylinder 301 is started to move downward, and the downward movement of the hydraulic cylinder 301 will drive the shell 302 to move downward, and the downward movement of the shell 302 will drive the first sliding rod 303 to move downward. At this time, the shell 302 will be close to the first mold 304, and the shell 302 will perform a preliminary bend on the lock buckle when it moves downward; the hydraulic cylinder 301 is set to move downward to drive the shell 302 to move downward, and the shell 302 will perform a preliminary bend on the lock buckle when it moves downward.

[0030] The shell 302 is filled with liquid, the height of the liquid is lower than the height of the first piston 403, the liquid is an extreme pressure emulsion, the composition: mineral oil base + extreme pressure additives containing sulfur and phosphorus compounds + emulsifier, the water base concentration after dilution is 8%~12%, the extreme pressure agent forms a chemical reaction film with the mold and stainless steel at the contact interface, withstands more than 1000MPa of compressive stress, reduces the friction coefficient to below 0.05, and ordinary engine oil is 0.15. The water-based system absorbs the bending friction heat temperature and can be controlled below 60°C, which inhibits the aggravation of work hardening. After the lock is initially bent, the shell 302 continues to press downward. The shell 302 continues to press downward, and the first sliding rod 303 will move upward, driving the first sleeve 401 to move upward. The upward movement of a sleeve 401 will compress the second spring 402. The first sleeve 401 is similar to an upward-opening container. When the first sleeve 401 moves upward and contacts the first piston 403, the first piston 403 will squeeze out the liquid in the first sleeve 401. The liquid in the first sleeve 401 is squeezed out through the hose 404 into the interior of the first hollow groove 3021. The liquid inside the first hollow groove 3021 in the shell 302 will be discharged to the bend of the lock through the small hole 3022; through the set structure, after the lock is initially bent, the shell 302 continues to press downward, which will drive the liquid inside the first hollow groove 3021 in the shell 302 to be discharged to the bend of the lock through the small hole 3022.

[0031] When the shell 302 moves downward, it will drive the first connecting rod 501 to move downward, and the downward movement of the first connecting rod 501 will drive the first inclined slider 502 to move downward. The downward movement of the first inclined slider 502 will cooperate with the second inclined slider 503. The downward movement of the first inclined slider 502 drives the two second inclined sliders 503 to approach each other, and the two second inclined sliders 503 approaching each other will drive the two second molds 504 to approach each other. The second mold 504 is limited by the sliding block 505 and the second sleeve 506, so that the second mold 504 can only move horizontally. The two second molds 504 approaching each other will squeeze the lock buckle again; with the set structure, after adding liquid at the bend of the lock buckle, the shell 302 continues to move downward, driving the two second molds 504 to approach each other, and the two second molds 504 squeeze the lock buckle again. Combined with the mixed extreme pressure emulsion, the lock buckle can be lubricated, cooled and anti-wear to avoid scratches and cracking.

[0032] When the shell 302 continues to move downward, it will drive the telescopic plate 308 to compress the compression spring inside the telescopic barrel 307. The elastic force of the compression spring inside the telescopic barrel 307 is very large. In the present invention, only the hydraulic cylinder 301 can push the compression spring inside the telescopic barrel 307. At this time, the telescopic plate 308 is retracted into the telescopic barrel 307, and the shell 302 continues to move downward to fit with the first mold 304 and drive the first mold 304 to move downward. The downward movement of the first mold 304 will drive the second sliding rod 305 to move downward. During the downward movement of the first mold 304, the first spring 306 is compressed, and the first mold 304 completes further extrusion and forming of the lock buckle in this process; through the set structure, the two second molds 504 squeeze the lock buckle again while the telescopic plate 308 is retracted into the telescopic barrel 307. At this time, the shell 302 continues to move downward to fit with the first mold 304, and in this process, the lock buckle is further extruded into a U shape.

[0033] The initial position of the second piston 602 is at the upper end of the fifth sleeve 611. At this time, the third spring 603 is in a reset state. After the lock is formed, the second piston 602 is at the bottom end of the fifth sleeve 611. At this time, the outside air enters the fifth sleeve 611 through the third hollow groove 6111. The upward movement of the second piston 602 compresses the air in the fifth sleeve 611. When the third sliding rod 601 moves upward, it drives the second piston 602 to move upward. The upward movement of the second piston 602 compresses the air inside the fifth sleeve 611, and the air inside the fifth sleeve 611 enters the fourth sleeve 606. The air inside the fourth sleeve 606 pushes the third piston 607 to move to one end. The movement of the third piston 607 to one end drives the second connecting rod 608 to move to one end. The movement of the second connecting rod 608 to one end drives the baffle 610 to one end. The movement of the baffle 610 to one end pushes the processed lock to the ground. 2 is provided with a groove inside the lower end. When the shell 302 is fitted with the first mold 304, the second connecting rod 608 and the baffle 610 will enter the groove at the lower end of the shell 302. The upward movement of the second piston 602 will drive the fourth sliding rod 604 to move upward. The upward movement of the fourth sliding rod 604 will drive the second hollow groove 6041 away from the third sleeve 605. After the fourth sliding rod 604 is away from the third sleeve 605, the high-pressure gas inside the fourth sleeve 606 and the fifth sleeve 611 will be discharged from the second hollow groove 6041 to the outside air. At this time, the third piston 607 will be reset to a position close to the fourth sliding rod 604 under the elastic force of the fourth spring 609. Through the structure provided, when the hydraulic cylinder 301 drives the shell 302 to move upward and the telescopic plate 308 is away from the first mold 304, after the telescopic plate 308 is away from the first mold 304, the upward movement of the shell 302 will drive the baffle 610 to push the lock to the ground, pushing the rear baffle 610 to automatically reset.

[0034] Initially pressing the stainless steel lock buckle to bend is equivalent to allowing the material to "adapt" to deformation, releasing some of the internal stress first. When it is subsequently pressed to the target shape, the deformation becomes smaller, just like breaking a piece of wire twice, with less force each time, which is naturally less likely to crack. After the initial pressing, the material surface may have slight bumps and grooves. When it is squeezed again, the friction with the mold will be greater, like rubbing your hands dry, causing heat and astringency. Extreme pressure emulsion is sprayed on the bend. The emulsion is like pouring a layer of lubricating oil, forming a thin film between the material and the mold. During extrusion, the material can "flow" more smoothly, avoiding scratches or jams caused by excessive friction in the mold, and reducing surface cracks. During extrusion, the deformation of the material generates heat, such as repeatedly bending an iron sheet will cause it to become hot. As the temperature rises, the toughness of the material decreases, like glass becoming brittle after being heated red, and prone to cracking. The water in the emulsion can quickly carry away the heat, keeping the material "soft" and more "resistant" when deformed.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-step molding die for a lock buckle, comprising a base (100), a support plate (200) being fixedly connected to the surface of the base (100), characterized in that: The lower end of the support plate (200) is provided with a first extrusion mechanism (300) for performing preliminary extrusion and bending on the lock buckle, the first extrusion mechanism (300) comprises a shell (302), the interior of the shell (302) is slidably connected to a first sliding rod (303), the surface of the first sliding rod (303) is slidably connected to a first mold (304), the interior of the shell (302) is provided with a spraying mechanism (400) for spraying extreme pressure emulsion on the bent portion of the preliminarily extruded lock buckle, the lower end of the shell (302) is provided with a second extrusion mechanism (500) for further extruding the lock buckle into a U-shape, and the upper end of the first mold (304) is provided with a pushing mechanism (600) for pushing the formed lock buckle to the ground.

2. The one-step molding die for a lock buckle according to claim 1, characterized in that: The first extrusion mechanism (300) includes a hydraulic cylinder (301), a non-output end of the hydraulic cylinder (301) is mounted on the surface of the support plate (200), the output end of the hydraulic cylinder (301) is fixedly connected to a housing (302), the lower end of the first mold (304) is fixedly connected to a second sliding rod (305), the second sliding rod (305) is sleeved with a first spring (306), the lower end of the first spring (306) is in contact with the upper end of the base (100), the surface of the second sliding rod (305) is slidably connected to the base (100), a first hollow groove (3021) is provided inside the housing (302), a plurality of small holes (3022) are provided inside the housing (302), and the upper end of the housing (302) is fixedly connected to a telescopic barrel (307).

3. The one-step molding die for a lock buckle according to claim 2, characterized in that: The first extrusion mechanism (300) further comprises a telescopic plate (308), and the interior of the telescopic barrel (307) is elastically connected to the telescopic plate (308) via a compression spring.

4. The one-step molding die for a lock buckle according to claim 3, characterized in that: The spraying mechanism (400) comprises a first sleeve (401), the first sleeve (401) is fixedly connected to the first sliding rod (303), the upper end of the first sleeve (401) is fixedly connected to a second spring (402), the upper end of the second spring (402) is fixedly connected to a housing (302), the interior of the housing (302) is fixedly connected to a first piston (403), the interior bottom end of the first sleeve (401) is fixedly connected to a hose (404), and the hose (404) is fixedly connected to the housing (302).

5. The one-step molding die for a lock buckle according to claim 4, characterized in that: The second extrusion mechanism (500) includes a first connecting rod (501), the first connecting rod (501) is fixedly connected to the shell (302), the lower end of the first connecting rod (501) is fixedly connected to a first inclined slider (502), one end of the first inclined slider (502) is attached to a second inclined slider (503), and the surface of the second inclined slider (503) is fixedly connected to a second mold (504).

6. The one-step molding die for a lock buckle according to claim 5, characterized in that: The second extrusion mechanism (500) further comprises a sliding block (505), one end of the second die (504) is fixedly connected to the sliding block (505), and one end of the sliding block (505) is elastically connected to the second sleeve (506) via a compression spring.

7. The one-step molding die for a lock buckle according to claim 6, characterized in that: The pushing mechanism (600) includes a third sliding rod (601), the third sliding rod (601) is fixedly connected to the housing (302), the lower end of the third sliding rod (601) is fixedly connected to the second piston (602), the outer portion of the second piston (602) is provided with a fifth sleeve (611), the upper end of the second piston (602) is fixedly connected to a third spring (603), the upper end of the third spring (603) is fixedly connected to the fifth sleeve (611), the interior of the fifth sleeve (611) is slidably connected to the fourth sliding rod (604), and the interior of the fourth sliding rod (604) is provided with a second hollow groove (6041).

8. The one-step molding die for a lock buckle according to claim 7, characterized in that: The pushing mechanism (600) further comprises a third sleeve (605), the third sleeve (605) being sleeved on the outside of the fourth sliding rod (604), the third sleeve (605) being fixedly connected to the inside of the fifth sleeve (611), the inside of the fifth sleeve (611) being provided with a third hollow groove (6111), the surface of the fifth sleeve (611) being fixedly connected to the fourth sleeve (606), one end of the fourth sleeve (606) being fixedly connected to the first mold (304), the inside of the fourth sleeve (606) being slidably connected to the third piston (607), one end of the third piston (607) being fixedly connected to the second connecting rod (608), one end of the third piston (607) being fixedly connected to the fourth spring (609), one end of the fourth spring (609) being fixedly connected to the fourth sleeve (606), and one end of the second connecting rod (608) being fixedly connected to the baffle (610).

9. A one-step forming process for a lock buckle, applicable to a one-step forming mold for a lock buckle according to any one of claims 1 to 8, characterized in that: The specific steps include: S1, when in use, the hydraulic cylinder (301) is activated to move downward, and the housing (302) is driven downward by the downward movement of the hydraulic cylinder (301), and the downward movement of the housing (302) preliminarily bends the lock buckle; S2, through the provided structure, after the lock buckle is initially bent, the housing (302) continues to press downward, which drives the liquid inside the first hollow groove (3021) in the housing (302) to be discharged through the small hole (3022) to the bent part of the lock buckle; S3, after adding liquid to the bend of the lock buckle, the shell (302) continues to move downward, driving the first connecting rod (501) to move downward, and the downward movement of the first connecting rod (501) drives the two second molds (504) to move closer to each other, and the two second molds (504) squeeze the lock buckle again; S4, when the housing (302) continues to move downward, it drives the telescopic plate (308) to compress the compression spring inside the telescopic barrel (307), and while the two second molds (504) squeeze the lock buckle again, the telescopic plate (308) shrinks into the telescopic barrel (307). At this time, the housing (302) continues to move downward to fit with the first mold (304), and in this process, the lock buckle is further squeezed, so that the lock buckle is squeezed into a U shape; S5, when the hydraulic cylinder (301) drives the housing (302) to move upward and the telescopic plate (308) moves away from the first mold (304), after the telescopic plate (308) moves away from the first mold (304), the housing (302) moves upward and drives the baffle (610) to push the lock to the ground, pushing the rear baffle (610) and then automatically reset.

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