Stainless steel hardware castings and process for making same

Abstract

This invention discloses a stainless steel hardware casting and its manufacturing process, belonging to the field of stainless steel hardware technology. It includes a support base, with a lower forming mold detachably fixed to the top of the support base via a locking assembly. A gantry frame is fixedly connected to the top of the support base, and a lifting cylinder is fixedly installed on the top of the gantry frame. An upper forming mold is fixedly connected to the output end of the lifting cylinder, and at least one injection port is fixedly connected to the top of the upper forming mold. The upper forming mold and the lower forming mold are movably connected. At least one side of the lower forming mold is provided with a liquid storage tank. A drive motor in the displacement adjustment mechanism cooperates with a transmission screw to drive a movable support to move horizontally along a guide groove, so that the pouring nozzle of the liquid storage tank is precisely aligned with the injection port of the upper forming mold. In the tilting mechanism, a rotary motor drives an adjusting screw to rotate and deflect through the vertical meshing of an active cone wheel and a driven cone wheel. Combined with the constraint of a translation slider and a traction rod, the liquid storage tank is tilted smoothly to complete the pouring process.

Description

Technical Field

[0001] This invention relates to the field of stainless steel hardware technology, and more specifically, to a stainless steel hardware casting and its manufacturing process. Background Technology

[0002] Stainless steel hardware castings are produced by pouring molten stainless steel into a mold, which then cools and solidifies to form the desired shape. Due to their excellent corrosion resistance, high strength, and good surface texture, stainless steel hardware is widely used in architectural decoration, kitchen and bathroom fixtures, machinery, and medical devices. With the continuous development of industrial manufacturing technology, the market has placed higher demands on the dimensional accuracy, internal quality, and production efficiency of stainless steel hardware castings. Currently, casting equipment typically includes an upper mold, a lower mold, and a gating system. The lower mold is fixed to a base, and after the upper and lower molds are closed, molten stainless steel is manually or through auxiliary devices poured into the mold cavity.

[0003] The prior art, disclosed in CN121104019A, discloses a metal hardware casting and forming device, including a housing. A door panel is provided on one side of the housing. Support feet are provided on both sides of the bottom of the housing. A support plate is horizontally inserted between the support feet. A rotating lifting component is provided on one side of the top of the support plate, penetrating the housing. A lower mold clamping part is provided at the center of the side of the housing away from the rotating lifting component. A lower template is provided on the lower mold clamping part, and a matching upper template is provided above the lower template. Side pressure plates are provided on both sides of the bottom of the upper template. A driving part is provided on the top of the upper template and installed on the top of the housing. Symmetrical upper mold clamping parts are provided on both sides of the housing corresponding to the sides of the upper template. A strip-shaped opening is provided on one side of the top of the housing, and a feed pipe is provided inside the strip-shaped opening, communicating with the upper template. Beneficial effects: It facilitates rapid cooling of the cast hardware parts, improving work efficiency.

[0004] Although the device is beneficial for rapidly cooling the cast hardware parts and improving work efficiency, the casting process requires pouring high-temperature stainless steel liquid into the mold. Existing equipment mostly relies on manual operation to pour the liquid. The temperature of the stainless steel liquid can reach over 1500℃. If the operation is improper or the equipment shakes, it is very easy to cause splashing and burns, posing a serious safety hazard. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a stainless steel hardware casting and its manufacturing process, thus solving the aforementioned problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a manufacturing process for stainless steel hardware castings, comprising a support base, a lower forming mold detachably fixedly connected to the top of the support base via a locking assembly, a gantry frame fixedly connected to the top of the support base, a lifting cylinder fixedly installed on the top of the gantry frame, an upper forming mold fixedly connected to the output end of the lifting cylinder, at least one liquid injection port fixedly connected to the top of the upper forming mold, the upper forming mold and the lower forming mold being movably connected, and a liquid storage tank provided on at least one side of the lower forming mold, further comprising: At least one set of tilting mechanisms, located to the side of the lower forming mold and connected to the liquid storage tank, is used to pour the stainless steel liquid in the liquid storage tank into the upper forming mold and the lower forming mold. At least one set of displacement adjustment mechanisms, located on the side of the lower molding die, is used to adjust the position of the liquid storage tank to tilt according to different positions of the injection port; The locking component is located between the bearing base and the lower forming mold, and is used to quickly fix the lower forming mold onto the bearing base; It also includes the following steps: S1: The lower mold is quickly installed and fixed onto the support base using the locking assembly; S2: Activate the lifting cylinder to drive the upper forming mold and the lower forming mold to close; S3: Drive the liquid storage tank to move horizontally through the displacement adjustment mechanism so that the pouring nozzle of the liquid storage tank is aligned with the liquid injection port of the upper mold. S4: Start the tilting mechanism to drive the liquid storage tank to tilt and inject the stainless steel liquid into the cavity formed by the upper and lower forming molds through the injection port; S5: After the casting has cooled and solidified, drive the upper mold to open and remove the stainless steel hardware casting. S6: Release the clamping of the lower molding die by operating the locking assembly, and replace or disassemble the lower molding die.

[0007] Preferably, the top of the bearing base is provided with symmetrically distributed guide grooves, and a movable support is slidably connected inside the guide groove.

[0008] Preferably, the displacement adjustment mechanism includes a drive motor and a transmission screw. The transmission screw is rotatably connected to the inner wall of the bearing base, and the drive motor is fixedly installed on the outer surface of the bearing base. The output end of the drive motor is fixedly connected to the end of the transmission screw, and the transmission screw is sleeved with the movable support.

[0009] Preferably, the pouring mechanism includes a rotating motor, an adjusting screw, a driving bevel gear, a driven bevel gear, and a hinge seat. The inner wall of the movable support is rotatably connected with the driving bevel gear. The outer surface of the driving bevel gear is vertically meshed with the driven bevel gear. The inside of the driving bevel gear is fixedly connected with a driving rotating shaft. The driving rotating shaft is located on the outer surface of the inner side of the movable support and is rotatably connected. The outer surface of the driving rotating shaft is fixedly connected with a hinge seat. The outer surface of the hinge seat is rotatably connected with an adjusting screw. The adjusting screw is fixedly connected with the driven bevel gear. The outer surface of the movable support is fixedly installed with a rotating motor. The output end of the rotating motor is fixedly connected with the end of the driving rotating shaft.

[0010] Preferably, the pouring mechanism further includes a translation slider, a positioning block, and a traction rod. The outer surface of the adjusting screw is sleeved with a translation slider. The translation slider is rotatably connected with the outer surface of the liquid storage tank. The top of the movable support is fixedly connected with a positioning block. The outer surfaces of both sides of the positioning block are rotatably connected with a traction rod. The other ends of the two traction rods are rotatably connected with the outer surface of the other side of the liquid storage tank.

[0011] Preferably, the locking component includes a clamping arm, a linkage rod, a return spring, an eccentric wheel, a transmission block, and a holding handle. A transverse slideway is opened at the top of the bearing base. The two clamping arms are slidably connected in the transverse slideway. The forming lower die is located between the two clamping arms. At least one linkage rod is movably sleeved between the two clamping arms. A return spring is sleeved on the outer surface of the linkage rod. The end of the linkage rod is fixedly connected with a transmission block. The top of the bearing base is rotatably connected with an eccentric wheel. The eccentric wheel is located between the transmission block and the adjacent clamping arm. A holding handle is fixedly installed at the bottom of the eccentric wheel.

[0012] Preferably, the locking component further includes a loosening prevention mechanism. The loosening prevention mechanism includes a limiting collar, a receiving groove, a positioning hole, and a locking pin. A receiving groove is opened on the outer surface of the transmission block. The limiting collar is slidably connected inside the receiving groove. The locking pin is inserted on the outer surface of the limiting collar. A plurality of equally spaced positioning holes are opened inside the receiving groove. The locking pin is movably inserted into the corresponding positioning hole; the limiting collar is sleeved with the holding handle.

[0013] Preferably, the gantry is arranged in a "U" - shaped structure. Vertical grooves are opened on the outer surfaces of the gantry close to each other. Guide sliders are slidably connected inside the two vertical grooves. The forming upper die is fixedly connected between the two guide sliders.

[0014] Preferably, a pouring nozzle is fixedly connected to the outer surface of the liquid storage tank close to the forming lower die. The pouring nozzle is adapted to the liquid injection port.

[0015] A stainless steel hardware casting is manufactured using the manufacturing process described above.

[0016] Compared with the prior art, the present invention provides a stainless steel hardware casting and its manufacturing process, which has the following beneficial effects: This invention relates to a stainless steel hardware casting and its manufacturing process. By incorporating a locking assembly, the rotation of an eccentric wheel drives the clamping arms to move in opposite directions, achieving rapid clamping and fixing of the lower mold. Simultaneously, an anti-loosening mechanism is added to the self-locking structure of the eccentric wheel, forming a double locking mechanism. After the operator rotates the handle to clamp the lower mold, the limiting collar is slid to the appropriate position, and the locking pin is inserted into the positioning hole, effectively preventing the eccentric wheel from rotating or the clamping arms from loosening due to equipment vibration or misoperation. When the lower mold needs to be replaced, simply pull out the locking pin and rotate the handle in the opposite direction; the return spring will automatically push the clamping arms back to their original position. Compared to traditional bolt fixing, this invention achieves tool-free, rapid disassembly and assembly of the lower mold, shortening mold change time and significantly improving equipment utilization and work efficiency in the production of multiple casting models.

[0017] This invention relates to a stainless steel hardware casting and its manufacturing process. Through the coordinated operation of a displacement adjustment mechanism and a tilting mechanism, it achieves automatic positioning and precise pouring of molten stainless steel. In the displacement adjustment mechanism, the drive motor and transmission screw work together to drive the movable support to move horizontally along the guide groove, ensuring that the pouring nozzle of the storage tank is precisely aligned with the injection port of the upper mold. In the tilting mechanism, a rotary motor, through the vertical meshing of the driving and driven conical wheels, simultaneously drives the adjusting screw to rotate and deflect. Combined with the constraint of the translation slider and the traction rod, this allows the storage tank to tilt smoothly to complete the pouring process. The entire process eliminates the need for manual contact with the high-temperature molten stainless steel, fundamentally avoiding the burn accidents commonly seen in aluminum casting equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B in the middle; Figure 5 This is a schematic diagram of the guide groove structure of the present invention; Figure 6 This is a schematic diagram of the locking component structure of the present invention; Figure 7 This is a schematic diagram of the eccentric wheel structure of the present invention; Figure 8 This is a schematic diagram of the locking pin structure of the present invention.

[0019] In the diagram: 1. Support base; 2. Gantry frame; 3. Lifting cylinder; 4. Upper forming mold; 5. Lower forming mold; 6. Movable support; 7. Tilting mechanism; 701. Rotary motor; 702. Adjusting screw; 703. Driving cone wheel; 704. Driven cone wheel; 705. Hinge seat; 706. Translation slider; 707. Positioning block; 708. Traction rod; 8. Liquid storage tank; 9. Shift adjustment mechanism; 901. Drive motor; 902. 10. Drive screw; 11. Guide slider; 12. Locking assembly; 13. Clamping arm; 14. Linkage rod; 15. Return spring; 16. Transverse slide; 17. Eccentric wheel; 18. Transmission block; 19. Limiting collar; 10. Grip handle; 1102. Receiving groove; 1113. Positioning hole; 1114. Locking pin; 10. Guide groove; 1115. Injection port; 16. Pouring nozzle. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 The present invention provides a technical solution: A stainless steel hardware casting includes a support base 1. A lower forming mold 5 is detachably fixed to the top of the support base 1 via a locking assembly 11. A gantry frame 2, shaped like a "U", is fixedly connected to the top of the support base 1, and a lifting cylinder 3 is fixedly mounted on its top. An upper forming mold 4 is fixedly connected to the output end of the lifting cylinder 3. Vertical grooves are formed on the inner walls of the two adjacent sides of the gantry frame 2, and guide sliders 10 are slidably connected within these grooves. The two guide sliders 10 are fixedly connected to the upper forming mold 4. A liquid injection port 13 is fixedly connected to the top of the upper forming mold 4. The upper forming mold 4 and the lower forming mold 5 are movably fitted together, forming a casting cavity after mold closing.

[0022] Liquid storage tanks 8 are provided on both sides of the lower molding die 5. Accordingly, the equipment includes two sets of tilting mechanisms 7 and two sets of shifting adjustment mechanisms 9, located on the left and right sides of the lower molding die 5, respectively.

[0023] The top of the support base 1 has two symmetrically distributed guide grooves 12, and a movable support 6 is slidably connected in each guide groove 12. The displacement adjustment mechanism 9 includes a drive motor 901 and a transmission screw 902. The transmission screw 902 is rotatably connected to the inner wall of the support base 1, and the drive motor 901 is fixedly installed on the outer surface of the support base 1. The output end of the drive motor 901 is fixedly connected to the end of the transmission screw 902. The transmission screw 902 is threadedly sleeved with the movable support 6. When the drive motor 901 rotates forward and backward, it drives the transmission screw 902 to rotate, thereby driving the movable support 6 to move horizontally back and forth along the guide groove 12.

[0024] The tilting mechanism 7 includes a rotary motor 701, an adjusting screw 702, a driving conical wheel 703, a driven conical wheel 704, a hinge seat 705, a translation slider 706, a positioning block 707, and a traction rod 708. The driving conical wheel 703 is rotatably connected to the inner wall of the movable support 6, and the driven conical wheel 704 is perpendicularly engaged with the outer surface of the driving conical wheel 703. A drive shaft is fixedly connected inside the driving conical wheel 703, located inside the movable support 6 and rotatably connected. The hinge seat 705 is fixedly connected to the outer surface of the drive shaft, and the adjusting screw 702 is rotatably connected to the outer surface of the hinge seat 705. The adjusting screw 702 is fixedly connected to the driven conical wheel 704. The rotary motor 701 is fixedly mounted on the outer surface of the movable support 6, and the output end of the rotary motor 701 is fixedly connected to the end of the drive shaft. The translation slider 706 is sleeved on the outer surface of the adjusting screw 702, and the translation slider 706 is rotatably connected to the outer surface of the storage tank 8. A positioning block 707 is fixedly connected to the top of the movable support 6. Traction rods 708 are rotatably connected to both outer surfaces of the positioning block 707. The other ends of the two traction rods 708 are rotatably connected to the other outer surface of the liquid storage tank 8.

[0025] The locking assembly 11 includes clamping arms 1101, linkage rods 1102, return springs 1103, eccentric wheels 1105, transmission blocks 1106, and grips 1108. A transverse slide 1104 is provided on the top of the support base 1, and two clamping arms 1101 are slidably connected within the transverse slide 1104. The lower forming mold 5 is located between the two clamping arms 1101. Two symmetrically distributed linkage rods 1102 are movably sleeved between the two clamping arms 1101, and a return spring 1103 is sleeved on the outer surface of each linkage rod 1102. Transmission blocks 1106 are fixedly connected to the ends of the linkage rods 1102. An eccentric wheel 1105 is rotatably connected to the top of the support base 1, and the eccentric wheel 1105 is located between the transmission block 1106 and the adjacent clamping arms 1101. A grip 1108 is fixedly installed at the bottom of the eccentric wheel 1105. The locking assembly 11 also includes an anti-loosening mechanism, which includes a limiting collar 1107, a receiving groove 1109, positioning holes 1110, and a locking pin 1111. The outer surface of the transmission block 1106 has a receiving groove 1109, and the limiting collar 1107 is slidably connected inside the receiving groove 1109. The locking pin 1111 is inserted into the outer surface of the limiting collar 1107, and the receiving groove 1109 has multiple equidistantly distributed positioning holes 1110. The limiting collar 1107 is sleeved with the grip handle 1108.

[0026] Each liquid storage tank 8 is fixedly connected to a pouring nozzle 14 near the outer surface of the lower mold 5, and the pouring nozzle 14 is adapted to the liquid injection port 13. The bottom of the lower mold 5 has multiple equidistant venting grooves 15, which are used to expel gas in the cavity during pouring and prevent the formation of porosity defects.

[0027] The manufacturing of stainless steel hardware castings includes the following steps: S1: Install the lower mold. Place the lower mold 5 on the support base 1, between the two clamping arms 1101. Manually rotate the grip handle 1108 to rotate the eccentric wheel 1105. The convex surface of the eccentric wheel 1105 pushes the transmission block 1106 to move. The transmission block 1106 drives the two clamping arms 1101 to slide towards each other through the linkage rod 1102, clamping the lower mold 5. Then slide the limiting collar 1107 along the receiving groove 1109, so that the locking pin 1111 is inserted into the corresponding positioning hole 1110, completing the locking.

[0028] S2: Mold closing. Activate the lifting cylinder 3 to drive the upper forming mold 4 to move downwards, and the guide slider 10 slides along the vertical groove until the upper forming mold 4 and the lower forming mold 5 are tightly closed.

[0029] S3: Horizontal positioning. Start the drive motors 901 on both sides, drive the transmission screws 902 to rotate, so that the movable support 6 moves the liquid storage tank 8 horizontally until the pouring nozzles 14 on both sides are aligned with the liquid injection ports 13 of the upper mold 4. Since there is only one liquid injection port, in actual operation, the displacement adjustment mechanism 9 on one side can be started first to complete the positioning and pouring, and then the other side can be started.

[0030] S4: Tilting and Pouring. Start the rotary motor 701, driving the rotating shaft to deflect the hinge seat 705, simultaneously rotating the adjusting screw 702 via the bevel gear pair. The translation slider 706 moves axially along the adjusting screw 702, and with the constraint of the traction rod 708, tilts the liquid storage tank 8. The molten stainless steel in the storage tank 8 is injected into the mold cavity through the pouring nozzle 14 and the injection port 13. During pouring, the venting groove 15 expels air from the mold cavity.

[0031] S5: Cooling and Mold Opening. After the molten stainless steel cools and solidifies, the lifting cylinder 3 reverses its direction, causing the upper forming mold 4 to rise and open. The formed stainless steel hardware casting is then removed.

[0032] S6: Remove the lower mold. Pull out the locking pin 1111, rotate the grip 1108 in the opposite direction, the return spring 1103 pushes the clamping arm 1101 to return to its original position, release the forming lower mold 5, and you can replace it with the next model of lower mold 5.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing process of a stainless steel hardware cast piece, comprising a load-bearing base (1), characterized in that: The top of the support base (1) is detachably fixedly connected to a lower molding die (5) via a locking assembly (11). The top of the support base (1) is fixedly connected to a gantry frame (2). A lifting cylinder (3) is fixedly installed on the top of the gantry frame (2). The output end of the lifting cylinder (3) is fixedly connected to an upper molding die (4). At least one liquid injection port (13) is fixedly connected to the top of the upper molding die (4). The upper molding die (4) is movably connected to the lower molding die (5). At least one side of the lower molding die (5) is provided with a liquid storage tank (8). The system also includes: At least one set of tilting mechanisms (7) is located on the side of the lower forming mold (5) and connected to the liquid storage tank (8) for pouring the stainless steel liquid in the liquid storage tank (8) into the upper forming mold (4) and the lower forming mold (5); At least one set of shift adjustment mechanisms (9) located on the side of the lower molding die (5) are used to adjust the position of the liquid storage tank (8) to pour according to the different positions of the injection port (13); The locking assembly (11) is located between the bearing base (1) and the lower forming mold (5) and is used to quickly fix the lower forming mold (5) onto the bearing base (1); It also includes the following steps: S1: The lower mold (5) is quickly installed and fixed on the support base (1) by means of the locking component (11); S2: Start the lifting cylinder (3) to drive the upper forming mold (4) and the lower forming mold (5) to close; S3: Drive the liquid storage tank (8) to move horizontally through the shift adjustment mechanism (9) so that the liquid storage tank (8) is aligned with the liquid injection port (13) of the upper mold (4). S4: Start the tilting mechanism (7), drive the liquid storage tank (8) to tilt, and inject the stainless steel liquid into the cavity formed by the upper forming mold (4) and the lower forming mold (5) through the injection port (13); S5: After the casting has cooled and solidified, drive the upper mold (4) to open the mold and take out the stainless steel hardware casting. S6: Release the clamping of the lower molding die (5) by operating the locking assembly (11), and replace or disassemble the lower molding die (5).

2. A process for manufacturing a stainless steel hardware castings as claimed in claim 1 wherein: The top of the bearing base (1) is provided with symmetrically distributed guide grooves (12), and the inside of the guide grooves (12) is slidably connected with movable supports (6).

3. A process for manufacturing a stainless steel hardware castings as claimed in claim 2 wherein: The displacement adjustment mechanism (9) includes a drive motor (901) and a transmission screw (902). The transmission screw (902) is rotatably connected to the inner wall of the bearing base (1). The drive motor (901) is fixedly installed on the outer surface of the bearing base (1). The output end of the drive motor (901) is fixedly connected to the end of the transmission screw (902). The transmission screw (902) is sleeved with the movable support (6).

4. A process for manufacturing a stainless steel hardware casting as claimed in claim 3, wherein: The tilting mechanism (7) includes a rotary motor (701), an adjusting screw (702), a driving cone wheel (703), a driven cone wheel (704), and a hinge seat (705). The inner wall of the movable support (6) is rotatably connected to the driving cone wheel (703). The outer surface of the driving cone wheel (703) is perpendicularly engaged with the driven cone wheel (704). The inside of the driving cone wheel (703) is fixedly connected to a drive shaft. The drive shaft is located on the inner outer surface of the movable support (6) and is rotatably connected. The outer surface of the drive shaft is fixedly connected to the hinge seat (705). The outer surface of the hinge seat (705) is rotatably connected to the adjusting screw (702). The adjusting screw (702) is fixedly connected to the driven cone wheel (704). The outer surface of the movable support (6) is fixedly mounted with the rotary motor (701). The output end of the rotary motor (701) is fixedly connected to the end of the drive shaft.

5. A process for manufacturing a stainless steel hardware castings as claimed in claim 4 wherein: The tilting mechanism (7) also includes a translation slider (706), a positioning block (707), and a traction rod (708). The outer surface of the adjusting screw (702) is fitted with the translation slider (706), which is rotatably connected to the outer surface of the storage tank (8). The top of the movable support (6) is fixedly connected with the positioning block (707), and the outer surfaces of both sides of the positioning block (707) are rotatably connected with the traction rod (708). The other ends of the two traction rods (708) are rotatably connected to the other outer surface of the storage tank (8).

6. The manufacturing process of a stainless steel hardware casting according to claim 5, characterized in that: The locking assembly (11) includes clamping arms (1101), linkage rods (1102), return springs (1103), eccentric wheels (1105), transmission blocks (1106), and grips (1108). A transverse slide (1104) is provided on the top of the bearing base (1). The two clamping arms (1101) are slidably connected in the transverse slide (1104). The lower forming mold (5) is located between the two clamping arms (1101), and the two clamping arms (1101) can move between each other. At least one linkage rod (1102) is sleeved on the linkage rod (1102), and a return spring (1103) is sleeved on the outer surface of the linkage rod (1102). A transmission block (1106) is fixedly connected to the end of the linkage rod (1102). An eccentric wheel (1105) is rotatably connected to the top of the bearing base (1). The eccentric wheel (1105) is located between the transmission block (1106) and the adjacent clamping arm (1101). A gripping handle (1108) is fixedly installed at the bottom of the eccentric wheel (1105).

7. The manufacturing process of a stainless steel hardware casting according to claim 6, characterized in that: The locking component (11) further includes a loosening prevention mechanism, and the loosening prevention mechanism includes a limiting collar (1107), a receiving groove (1109), a positioning hole (1110) and a locking pin (1111). A receiving groove (1109) is formed on the outer surface of the transmission block (1106). A limiting collar (1107) is slidably connected inside the receiving groove (1109). A locking pin (1111) is inserted into the outer surface of the limiting collar (1107). A plurality of equally spaced positioning holes (1110) are formed inside the receiving groove (1109). The locking pin (1111) is movably inserted into the corresponding positioning hole (1110). The limiting collar (1107) is sleeved on the holding handle (1108).

8. The manufacturing process of a stainless steel hardware casting according to claim 7, characterized in that: The gantry (2) is arranged in a "U" - shaped structure. Vertical grooves are formed on the outer surfaces of the gantry (2) close to each other. Guide sliders (10) are slidably connected inside the two vertical grooves. The forming upper die (4) is fixedly connected between the two guide sliders (10).

9. The manufacturing process of a stainless steel hardware casting according to claim 8, characterized in that: A pouring nozzle (14) is fixedly connected to the outer surface of the liquid storage tank (8) close to the forming lower die (5). The pouring nozzle (14) is adapted to the liquid injection port (13).

10. A stainless steel hardware casting, characterized in that, Manufactured by using the manufacturing process according to any one of claims 1 to 9.

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