Quench-polish-quench (QPQ) part charging tool

Abstract

The utility model relates to the technical field of charging tools, and particularly discloses a QPQ part charging tool which comprises a fixing basket, the fixing basket comprises a first bottom plate, the first bottom plate is in a grid shape, a center column is fixedly connected to the center of the first bottom plate, and a plurality of positioning holes are evenly formed in the two sides of the outer end of the center column at intervals. The outer end of the central column is sleeved with a plurality of adjusting baskets, and the adjusting baskets are mutually stacked above the fixed basket; and the adjusting basket comprises a second bottom plate, the second bottom plate is in a grid shape, a second outer protection ring is fixedly connected to the periphery of the upper portion of the second bottom plate through a connecting rod, a guardrail assembly is slidably connected to the outer side of the second outer protection ring, and a clamping assembly is fixed to the middle of the upper end face of the second bottom plate. According to the utility model, the adjusting baskets are arranged, the mounting and adjusting positions of the adjusting baskets can be adjusted, and the guardrail assembly is arranged, so that the guardrail assembly can ensure that the guardrail assembly still has a protection effect after the space is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace loading tooling, in particular to a QPQ parts furnace loading tooling. Background Art

[0002] QPQ stands for "Quench-Polishing-Quench," originally meaning quenching-polishing-quenching. QPQ technology is now widely used in industry as a surface modification technique.

[0003] QPQ treatment primarily involves two processes: salt-bath nitriding and salt-bath oxidation. First, the part undergoes nitriding in a salt bath containing active nitrogen atoms. The nitrogen atoms penetrate the part surface, forming a nitride layer. The nitrided part then undergoes oxidation in an oxidizing salt bath, forming an oxide film on the surface. QPQ-treated parts exhibit improved wear resistance and corrosion resistance.

[0004] During the QPQ process, various parts need to be placed in a high-temperature salt bath furnace for nitriding and oxidation. This requires a loading fixture to orderly position the parts. Fixed loading fixtures, however, have fixed spacing between each layer, limiting the types of workpieces they can accommodate. This also results in low space utilization when loading smaller workpieces. While fixtures with adjustable spacing between the upper and lower layers can address this issue, increasing the spacing between the upper and lower layers increases the risk of parts falling due to the lack of protection and restraint provided by the edges of the housing. Therefore, those skilled in the art have developed a QPQ part loading fixture to address the issues raised in the background art. Utility Model Content

[0005] The purpose of the utility model is to provide a QPQ parts furnace loading tool to solve the above technical problems.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A QPQ parts furnace loading tool comprises a fixed basket, the fixed basket comprising a bottom plate 1, the bottom plate 1 being in a grid shape, a center column being fixedly connected to the center of the bottom plate 1, and a plurality of positioning holes being evenly spaced on both sides of the outer end of the center column;

[0008] The outer end of the central column is sleeved with a plurality of adjustment baskets, and the plurality of adjustment baskets are stacked on top of the fixed basket;

[0009] The adjustment basket includes a second bottom plate, which is in a grid shape. An outer guard ring 2 is fixedly connected to the upper periphery of the second bottom plate through a connecting rod. A guardrail assembly is slidably connected to the outer side of the second outer guard ring. A clamping assembly is fixed to the middle of the upper end surface of the second bottom plate, and the clamping assembly is clamped to the positioning hole.

[0010] Furthermore, the guardrail assembly includes an upper guard ring, the inner side of which is fixedly connected to a plurality of connecting sleeves, the connecting sleeves being slidably connected to the connecting rods between the second bottom plate and the second outer guard ring, and the lower side of the upper guard ring being fixedly connected to the lower side of the upper guard ring via the connecting rods;

[0011] Furthermore, a second convex edge is fixedly connected to the outer side of the second outer guard ring;

[0012] Furthermore, the clamping assembly includes a collar, the central column passes through the collar, both sides of the collar are slidably connected to a hexagonal shaft, the inner end of the hexagonal shaft is fixedly connected to a clamping column, the clamping column is plugged into the positioning hole, and the outer end of the hexagonal shaft is fixedly connected to a handle;

[0013] Furthermore, pins are inserted into both sides of the upper end surface of the collar, and the lower ends of the pins pass through the hexagonal shaft;

[0014] Furthermore, the upper periphery of the bottom plate 1 is fixedly connected to an outer guard ring 1 via a connecting rod, and the outer side of the outer guard ring 1 is fixedly connected to a convex edge 1;

[0015] Furthermore, the upper end of the central column is fixedly connected with a lifting ring;

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model proposes a QPQ parts furnace loading tooling, which is provided with an adjustment basket. The multiple adjustment baskets can be adjusted in the installation position, so that the space between the adjustment baskets can be changed by changing the different installation spacing and installation quantity of the adjustment baskets to adapt to workpieces of different sizes. It has a wide range of applications and high space utilization.

[0018] 2. The utility model proposes a QPQ parts furnace loading tooling, which is provided with a guardrail assembly. The guardrail assembly can ensure that the protection effect is still there after the space is expanded. At the same time, the guardrail assembly adopts a sliding connection method and can fall freely by gravity without additional structural adjustment, which is convenient for differentiated adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 This is the overall structural diagram of a QPQ parts furnace loading tooling proposed by the utility model;

[0021] Figure 2 This is a connection structure diagram of the fixed frame and the center column in a QPQ parts furnace loading tooling proposed by the utility model;

[0022] Figure 3 This is a structural diagram of an adjustment basket in a QPQ parts furnace loading tooling proposed by the utility model;

[0023] Figure 4 This is a structural diagram of a clamping assembly in a QPQ parts furnace loading tooling proposed by the utility model.

[0024] Reference numerals:

[0025] 1. Fixed basket; 11. Bottom plate (1); 12. Outer guard ring (1); 13. Raised edge (1); 2. Adjustable basket; 21. Bottom plate (2); 22. Outer guard ring (2); 23. Raised edge (2); 24. Guardrail assembly; 241. Upper guard ring; 242. Connecting sleeve; 243. Lower guard ring; 25. Snap-fit ​​assembly; 251. Ring; 252. Hexagonal shaft; 253. Snap-fit ​​column; 254. Handle; 255. Latch; 3. Center column; 4. Positioning hole; 5. Lifting ring. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please see the attached Figures 1 to 4 As shown, a QPQ parts furnace loading tool in an embodiment of the present invention includes a fixed basket 1, the fixed basket 1 includes a bottom plate 11, the bottom plate 11 is in a grid shape, a center column 3 is fixedly connected to the center of the bottom plate 11, and a plurality of positioning holes 4 are evenly spaced on both sides of the outer end of the center column 3;

[0028] The outer end of the central column 3 is sleeved with multiple adjustment baskets 2, and the multiple adjustment baskets 2 are stacked on top of the fixed basket 1. The multiple adjustment baskets 2 can adjust the installation position, so that the space between the adjustment baskets 2 can be changed by changing the different installation spacing and installation quantity of the adjustment baskets 2 to adapt to workpieces of different sizes, and the application range is wide.

[0029] Specifically, the adjustment basket 2 includes a bottom plate 21, which is in a grid shape. The upper periphery of the bottom plate 21 is fixedly connected to an outer guard ring 22 through a connecting rod. The outer side of the outer guard ring 22 is slidably connected to a guardrail assembly 24. A clamping assembly 25 is fixed to the middle of the upper end surface of the bottom plate 21, and the clamping assembly 25 is clamped with the positioning hole 4. When in use, the parts are placed inside the fixed basket 1 and the adjustment basket 2. The grid-shaped bottom plate 21 can ensure the fluidity of the salt bath in the tooling, ensuring that parts of different sizes can fully contact the salt bath components. The outer guard ring 22 is provided to play a protective role to prevent parts from falling out.

[0030] Among them, the guardrail assembly 24 is set to play a shielding role on the adjustment basket 2 or fixed basket 1 below after the position of each adjustment basket 2 is adjusted, ensuring that there is still a protective effect after the space is expanded, preventing the expanded space from having no protective structure and the parts from falling easily. At the same time, the guardrail assembly 24 adopts a sliding connection method, which can use gravity to fall freely without additional structural adjustment, and is convenient for differentiated adjustment; and the provided clamping assembly 25 is used to fix the adjustment basket 2 and the positioning hole 4 of the center column 3, and the unlocking and locking operations are performed through the clamping assembly 25 when in use.

[0031] As an embodiment of the present invention, the guardrail assembly 24 includes an upper guard ring 241, and a plurality of connecting sleeves 242 are fixedly connected to the inner side of the upper guard ring 241. The connecting sleeves 242 are slidably connected to the connecting rod between the bottom plate 21 and the outer guard ring 22. The lower part of the upper guard ring 241 is fixedly connected to the lower guard ring 243 through the connecting rod. A ring-shaped guardrail structure is formed between the upper guard ring 241 and the lower guard ring 243. When the upper and lower spaces are reduced, the lower guard ring 243 will be subjected to force and the upper guard ring 241 will be retracted. When the space expands, the guardrail assembly 24 will naturally fall and unfold due to gravity, thereby adapting to the protection needs of workpieces of different sizes. At the same time, each guardrail assembly 24 can be adjusted independently, which is also convenient for differentiated adjustment and has strong flexibility in use.

[0032] In addition, a second convex edge 23 is fixedly connected to the outer side of the second outer guard ring 22. The second convex edge 23 is provided to serve as the contact surface of the lower guard ring 243. When the lower guard ring 243 falls, it will contact the second convex edge 23, thereby limiting the position of the lower guard ring 243.

[0033] As an embodiment of the present invention, the snap-fit ​​assembly 25 includes a ring 251, the center column 3 passes through the ring 251, and the inner sides of the ring 251 are slidably connected with a hexagonal shaft 252. The inner end of the hexagonal shaft 252 is fixedly connected with a snap-fit ​​column 253, and the snap-fit ​​column 253 is plugged into the positioning hole 4. The outer end of the hexagonal shaft 252 is fixedly connected with a handle 254. When the snap-fit ​​assembly 25 is in use, the handle 254 is used to drive the snap-fit ​​column 253 to move, thereby plugging and separating the snap-fit ​​column 253 from the positioning hole 4, so that the adjustment basket 2 and the center column 3 are connected, fixed and unlocked.

[0034] In addition, in order to ensure the stability between the clamping column 253 and the positioning hole 4, pins 255 are inserted on both sides of the upper end surface of the ring 251, and the lower end of the pin 255 passes through the hexagonal shaft 252. After the clamping column 253 is plugged into the positioning hole 4, the pin 255 can be inserted to ensure that the clamping column 253 will not be accidentally separated from the positioning hole 4, thereby improving reliability.

[0035] As an embodiment of the present invention, the upper periphery of the bottom plate 11 is fixedly connected to the outer guard ring 12 through a connecting rod, and the outer side of the outer guard ring 12 is fixedly connected to the convex edge 13. The convex edge 13 and the convex edge 23 have the same function, both of which are used to limit the position of the lower guard ring 243.

[0036] As an embodiment of the present invention, a lifting ring 5 is fixedly connected to the upper end of the central column 3. The lifting ring 5 is provided to facilitate lifting, and the lifting ring 5 is provided at the upper end of the central column 3, and the weight is evenly distributed, which can ensure the stability of lifting.

[0037] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A QPQ parts furnace loading tool, comprising a fixed basket (1), characterized in that: The fixed basket (1) comprises a bottom plate (11) having a grid shape, a center column (3) being fixedly connected to the center of the bottom plate (11), and a plurality of positioning holes (4) are evenly spaced on both sides of the outer end of the center column (3); The outer end of the central column (3) is sleeved with a plurality of adjustment baskets (2), and the plurality of adjustment baskets (2) are stacked on top of the fixed basket (1); The adjustment basket (2) includes a second bottom plate (21), the second bottom plate (21) is in a grid shape, the upper periphery of the second bottom plate (21) is fixedly connected to the second outer guard ring (22) via a connecting rod, the outer side of the second outer guard ring (22) is slidably connected to a guardrail assembly (24), and a clamping assembly (25) is fixed at the middle of the upper end surface of the second bottom plate (21), and the clamping assembly (25) is clamped to the positioning hole (4).

2. The QPQ parts furnace loading tool according to claim 1, characterized in that: The guardrail assembly (24) comprises an upper guard ring (241), a plurality of connecting sleeves (242) being fixedly connected to the inner side of the upper guard ring (241), the connecting sleeves (242) being slidably connected to the connecting rods between the second bottom plate (21) and the second outer guard ring (22), and a lower guard ring (243) being fixedly connected to the lower side of the upper guard ring (241) via the connecting rods.

3. A QPQ parts furnace loading tool according to claim 2, characterized in that: The outer side of the second outer guard ring (22) is fixedly connected with a second convex edge (23).

4. The QPQ parts furnace loading tool according to claim 1, characterized in that: The clamping assembly (25) comprises a collar (251), the center column (3) passes through the collar (251), both sides of the interior of the collar (251) are slidably connected to a hexagonal shaft (252), the inner end of the hexagonal shaft (252) is fixedly connected to a clamping column (253), the clamping column (253) is plugged into the positioning hole (4), and the outer end of the hexagonal shaft (252) is fixedly connected to a handle (254).

5. The QPQ parts furnace loading tool according to claim 4, characterized in that: Pins (255) are inserted into both sides of the upper end surface of the collar (251), and the lower end of the pin (255) passes through the hexagonal shaft (252).

6. The QPQ parts furnace loading tool according to claim 1, characterized in that: The upper periphery of the bottom plate (11) is fixedly connected to an outer guard ring (12) via a connecting rod, and the outer side of the outer guard ring (12) is fixedly connected to a convex edge (13).

7. The QPQ parts furnace loading tool according to claim 1, characterized in that: The upper end of the central column (3) is fixedly connected to a lifting ring (5).

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