A pin-shaft salt bath composite treatment rack

Abstract

This utility model relates to a pin-shaft salt bath composite treatment rack. Support plates are vertically fixed to the top sides of two sets of support bases. Lifting plates are slidably installed on the sides of the support plates, and hollow frames are fixedly installed on the sides of the lifting plates. Bearing plates are rotatably installed between the sides of the hollow frames. A flipping mechanism is provided inside the hollow frames. This utility model ensures that when the bearing plate lowers the pin-shaft into the salt bath, the bearing plate will not rotate arbitrarily, guaranteeing stable salt bath processing of the pin-shaft workpiece inside. Simultaneously, the pin-shaft workpiece after salt bath processing can rotate while being vertically lifted, causing it to flip and tip over. This allows the operator to simply catch the pin-shaft workpiece falling from the bottom of the bearing plate to complete the transfer of the salt-bath processed pin-shaft workpiece. This reduces the number of steps and labor required for sequentially pulling and transferring a large number of pin-shaft workpieces, thereby improving the efficiency of salt bath processing of pin-shaft workpieces.

Description

Technical Field

[0001] This utility model relates to the field of pin-shaft salt bath processing technology, specifically a pin-shaft salt bath composite treatment hanger. Background Technology

[0002] Pins are mechanical connecting parts used to transmit torque or fix components. Salt bath is a heat treatment process for pin-type parts. By immersing them in a molten salt bath for rapid heating and cooling, the salt bath medium has excellent thermal uniformity and temperature controllability, which can achieve efficient hardening or tempering treatment, significantly improving the surface hardness, wear resistance and fatigue strength of the pin, while maintaining the toughness of the core.

[0003] According to publicly available patent CN215050501U, a pin-shaft salt bath composite treatment hanger belongs to the field of mechanical equipment. This utility model includes a base, a support rod, a sleeve, a filter screen, a pad tube, a hanging mesh, a hanger, and a nut. The support rod is mounted on the base, and the filter screen, sleeve, hanging mesh, pad tube, and hanger are sequentially arranged on the support rod from bottom to top. The hanger is installed on the support rod by a nut. The hanger includes a hanger body, lifting lugs, lifting holes, and a support plate. The lifting lugs and support plate are both located on the hanger body, and the lifting holes are located on the lifting lugs. The hanger body is mounted on the support rod, and the support rod and nut are connected by threads. The lifting holes are used to mount the hooks of a crane. The hanger body has a circular ring structure, and a pin is hung on the hanging mesh. The length of the pin is less than the distance between the filter screen and the hanging screen. In actual use, after a large number of pins are vertically inserted into the mesh of the hanging screen and then subjected to salt bath processing, when transferring and changing the large number of pins, the operator can only lift them vertically one by one to remove them from the hanging screen. It is not possible to transfer them simultaneously, which results in more operation steps required for material transfer, which is time-consuming and labor-intensive. At the same time, it affects the feeding efficiency of other pins to be processed in the salt bath, and thus affects the overall salt bath processing efficiency of the pin workpieces.

[0004] For example, when dealing with a large number of pins that cannot be fully salt-bathed in a single mesh hanging process, operators need to insert the pins into the mesh openings in batches for suspension, then hoist them for salt bath processing. After salt bath processing, operators still need to transfer the pins. For large batches of pins, operators must vertically pull each pin sequentially to remove them from the mesh openings before proceeding with the remaining batches for salt bath processing. This process is labor-intensive, time-consuming, and reduces the efficiency of salt bath processing for the same batch of pins. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a pin-shaft salt bath composite treatment rack. This solves the current technical problem that when dealing with a large number of pin-shaft workpieces that cannot be completely salt-bathed in a single mesh hanging process, the operator needs to insert the pin-shaft workpieces into the mesh holes of the hanging mesh in batches for suspension and then hoist them for salt bath processing. After the salt bath, the operator still needs to transfer the pin-shafts. For a large number of pin-shafts, the operator needs to vertically lift the pin-shafts one by one to remove them from the mesh holes before the remaining batches of pin-shafts can be suspended for salt bath processing. The overall operation requires too much labor, is time-consuming and labor-intensive, and affects the efficiency of salt bath processing of the same batch of pin-shafts.

[0006] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a pin-shaft salt bath composite treatment rack, including two sets of support bases, support plates are vertically fixedly installed on the top side of the two sets of support bases, lifting plates are slidably installed on the side of the support plates, hollow frames are fixedly installed on the side of the lifting plates, and bearing plates are rotatably installed between the sides of the hollow frames.

[0007] The hollow frame is equipped with a flipping mechanism, which is connected to the support plate via a transmission. The support plate is equipped with a guide limiting mechanism on its outer side.

[0008] The support plate has a vertically penetrating placement slot, and there are several sets of placement slots. Each placement slot has a retaining arc plate movably installed on its inner sidewall. The support plate is equipped with a synchronization mechanism, and the synchronization mechanism is connected to the outer side of the retaining arc plate via a transmission.

[0009] Preferably, the flipping mechanism includes a transmission rack and a transmission gear. A rotating rod is rotatably mounted laterally inside the middle of each hollow frame via a bearing, and the top edge of the rotating rod is fixedly connected to the outer side of the support plate. The transmission gear is fixedly sleeved at the middle end of the rotating rod. A sliding groove is vertically opened on the side of each hollow frame. A fixing block is fixedly installed on the top side of each support plate. A transmission rack is vertically fixedly installed on the side of each fixing block, and the transmission rack and the sliding groove are in the same vertical position.

[0010] Preferably, a fixing plate is fixedly installed on the bottom side of the support base, an electric push rod is fixedly installed on the top middle of the fixing plate, a connecting plate is fixedly installed on the top of the electric push rod drive shaft, a connecting block is fixedly installed on the middle side of each connecting plate, and the top side of the connecting block is fixedly connected to the outer wall of the lifting plate. A guide groove is vertically opened in the middle of each support plate, and the connecting block is slidably inserted into the guide groove.

[0011] Preferably, the guiding and limiting mechanism includes a guide frame and a guide slider. Each support plate has a fixed plate fixedly installed longitudinally at both ends of its side. Each fixed plate has a guide frame fixedly installed on the side away from the support base. Each guide frame has a vertically opening limiting groove inside. Each bearing plate has a limiting slider fixedly installed at both ends of its side.

[0012] Preferably, the synchronization mechanism includes a push plate, a transmission plate, and a connecting rod. The push plate is slidably installed laterally on the inner side of the bearing plate, and the transmission plate is slidably installed laterally inside the bearing plate. The connecting rod is longitudinally fixed between the outer sides of the push plate and the transmission plate, as well as between the sides of two adjacent sets of transmission plates. An installation block is fixedly installed at the middle of the side of each abutting arc plate, and the side of the installation block is fixedly connected to the outer wall of the push plate and the transmission plate.

[0013] Preferably, the bearing plate has a first movable groove opened laterally inside, and the number of the first movable grooves is several sets. The push plate and the transmission plate are slidably installed inside the first movable groove. The bearing plate has a second movable groove opened longitudinally on both sides inside, and the connecting rod is slidably installed inside the second movable groove.

[0014] Preferably, an adjusting bolt is threaded through and screwed to the middle of the side of the bearing plate, and the top of the adjusting bolt is rotatably inserted into the side of the push plate through a bearing. Guide rods are longitudinally fixedly installed at both ends of the side of the push plate, and the guide rods are slidably inserted into the side of the bearing plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model features a vertically movable sliding plate and a hollow frame on the top of a support base. A rotating rod is used to rotatably mount a bearing plate on the outside of the hollow frame. This allows the electric actuator to provide synchronous vertical movement for the bearing plate and the pin-shaped workpiece inserted inside it during salt bath processing. After the bearing plate and pin-shaped workpiece are simultaneously lifted and moved out of the salt bath, the hollow frame is also lifted vertically and moved out of the salt bath. The hollow frame then moves synchronously and engages with the transmission rack. Through the meshing of the transmission rack and gear, as the bearing plate lifts the pin-shaped workpiece vertically, the transmission gear drives the rotating rod to rotate synchronously. This allows the rotating rod to drive the bearing plate... The plate then flips synchronously, and in conjunction with the limiting slider located on the outside of the support plate and the limiting groove inside the guide frame, the vertical guiding and limiting action of the limiting slider ensures that the support plate will not rotate arbitrarily when it drives the pin to descend into the salt bath. This ensures that the pin workpiece inside can be stably processed in the salt bath. At the same time, the pin workpiece after salt bath processing can rotate and flip over while being vertically lifted. This allows the operator to simply catch the pin workpiece falling from the bottom of the support plate to complete the transfer of the processed pin workpiece. This reduces the number of steps and labor required for the operator to pull and transfer a large number of pin workpieces sequentially, thereby improving the efficiency of salt bath processing of pin workpieces.

[0017] 2. This utility model features multiple sets of slidable transmission plates inside a support plate, connected by a connecting rod. These transmission plates are then linked to a push plate. Adjusting the transmission plates via the tightening of adjusting bolts on the side of the support plate causes them to move horizontally within the support plate. The connecting rod, acting as a transmission link, moves the transmission plates synchronously with the push plate. This, in turn, moves multiple sets of clamping arc plates inside the placement groove horizontally, adjusting the distance between the clamping arc plates and the inner wall of the placement groove. This provides a stop and limit mechanism for the multiple sets of pin workpieces inserted into the placement groove. While ensuring the stability of the pin workpieces during salt bath processing, this design further reduces the number of steps and labor required for fixing a large number of pin workpieces, thus improving the efficiency of salt bath processing for a large number of pin workpieces. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the flipping mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the guide and limiting mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the bearing plate of this utility model;

[0022] In the diagram: 1. Support base; 11. Support plate; 12. Lifting plate; 13. Bearing plate; 14. Placement slot; 15. Fixing plate; 16. Electric actuator; 17. Connecting plate; 18. Connecting block; 19. Guide groove;

[0023] 2. Hollow frame; 21. Rotating rod; 22. Transmission gear; 23. Fixing block; 24. Transmission rack; 25. Sliding groove; 26. Guide frame; 27. Limiting slider; 28. Limiting groove;

[0024] 3. Guide rod; 31. Adjusting bolt;

[0025] 4. First movable groove; 41. Second movable groove; 42. Push plate; 43. Transmission plate; 44. Connecting rod; 45. Mounting block; 46. Abutting arc plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Example 1: A pin-shaft salt bath composite treatment rack, see [link / reference] Figures 1 to 4 Two sets of support bases 1 have support plates 11 vertically fixedly installed on the top side of the top surface. Lifting plates 12 are slidably installed on the side of the support plates 11. Hollow frames 2 are fixedly installed on the side of the lifting plates 12. Bearing plates 13 are rotatably installed between the sides of the hollow frames 2. The bearing plates 13 have vertically penetrating placement grooves 14, and there are several sets of placement grooves 14. The diameter of the placement grooves 14 is smaller than the diameter of the top cap of the pin to be processed in the salt bath.

[0028] For details, see Figures 1 to 4 Each placement slot 14 has a retaining arc plate 46 movably installed on its inner side wall. The inside of the retaining arc plate 46 is a transparent mesh, so that when it is used to abut and limit the pin workpiece, the salt bath raw material can pass through the inside of the mesh frame retaining arc plate 46 and be processed with the outer wall of the pin workpiece.

[0029] An adjusting bolt 31 is threaded through and screwed onto the middle of the side of the bearing plate 13. The top of the adjusting bolt 31 is rotatably inserted into the side of the push plate 42 via a bearing. Guide rods 3 are longitudinally fixedly installed at both ends of the side of the push plate 42. The guide rods 3 are slidably inserted into the side of the bearing plate 13. Corresponding grooves are provided at both ends of the side of the bearing plate 13. The guide rods 3 are slidably inserted into the grooves to limit the horizontal movement of the push plate 42.

[0030] A push plate 42 is slidably installed on the inner side of the bearing plate 13, and a transmission plate 43 is slidably installed on the inner side of the bearing plate 13. There are several groups of transmission plates 43. A connecting rod 44 is longitudinally fixed between the outer sides of the push plate 42 and the transmission plate 43, as well as between the sides of two adjacent groups of transmission plates 43. An installation block 45 is fixedly installed at the middle of the side of each abutting arc plate 46, and the side of the installation block 45 is fixedly connected to the outer wall of the push plate 42 and the transmission plate 43.

[0031] The bearing plate 13 has a first movable groove 4 opened horizontally inside, and there are several sets of first movable grooves 4. The push plate 42 and the transmission plate 43 are slidably installed inside the first movable groove 4. The bearing plate 13 has a second movable groove 41 opened longitudinally on both sides inside, and the connecting rod 44 is slidably installed inside the second movable groove 41.

[0032] For example, when fixing the pin workpiece to be processed in the salt bath, the operator only needs to turn the adjusting bolt 31 at a single position. Under the connected transmission action of the push plate 42, transmission plate 43 and connecting rod 44, multiple sets of abutting arc plates 46 are provided with synchronous moving force, which can perform abutment and limit treatment on multiple sets of pin workpieces. In the traditional solution, the operator can only insert the pin workpiece into the placement mesh, but cannot fix it synchronously. As a result, the pin workpiece can move vertically or shake and fall off inside the mesh during vertical movement and salt bath processing, which affects the subsequent material transfer of the pin workpiece and the quality of salt bath processing.

[0033] In the specific implementation of this solution, when the pin workpiece needs to be salt bath processed, the pin workpiece is vertically inserted into the placement groove 14 in sequence, so that the top cap end of the pin workpiece is attached to the top surface of the bearing plate 13. Then, the adjusting bolt 31 is tightened, so that under the guiding and limiting action of the guide rod 3, the push plate 42 moves horizontally in the first movable groove 4, and the connecting rod 44 on its side moves horizontally in the second movable groove 41. Then, under the connecting transmission action of the connecting rod 44, multiple sets of transmission plates 43 on the side can move synchronously in the first movable groove 41 along with the movement of the push plate 42. The groove 4 moves horizontally inside, allowing multiple sets of abutting arc plates 46 to move synchronously inside the placement groove 14 until their sides abut against the outer wall of the pin workpiece, limiting its movement inside the placement groove 14. After the salt bath processing is completed, the electric push rod 16 rotates in reverse to drive the lifting plate 12 and the bearing plate 13 to move vertically synchronously, removing the pin workpiece inserted inside from the salt bath tank. Then, the adjusting bolt 31 is turned in reverse to repeat the above transmission steps, causing the abutting arc plates 46 to move away from the outer wall of the pin workpiece and lose their abutting limiting force, facilitating the subsequent flipping and tilting of the pin workpiece.

[0034] Further, see Figures 1 to 4 A fixed plate 15 is fixedly installed on the bottom side of the support base 1. An electric push rod 16 is fixedly installed on the top middle of the fixed plate 15. A connecting plate 17 is fixedly installed on the top of the drive shaft of the electric push rod 16. A connecting block 18 is fixedly installed on the middle side of each connecting plate 17. The top side of the connecting block 18 is fixedly connected to the outer wall of the lifting plate 12. A guide groove 19 is vertically opened in the middle of each support plate 11. The connecting block 18 is slidably inserted into the guide groove 19.

[0035] The electric actuator 16 is then turned on by an external control switch, causing it to rotate and drive the connecting plate 17 to descend vertically outside the support plate 11. Under the sliding action of the guide groove 19 on the connecting block 18, the connecting plate 17 can drive the lifting plate 12 to move vertically in sync. This allows the bearing plate 13 and the pin workpiece inserted inside it to move vertically while maintaining a horizontal state into the tank containing molten salt. During the rapid heating of the molten salt, the surface of the pin workpiece is subjected to salt bath processing.

[0036] It is worth noting that, see Figures 1 to 4 Each hollow frame 2 has a rotating rod 21 installed laterally inside the middle of its middle section via a bearing. The rotating rod 21 extends from the inside of the hollow frame 2 to its outside, and the top side of the rotating rod 21 is fixedly connected to the outside of the bearing plate 13. The middle end of the rotating rod 21 is fixedly sleeved with a transmission gear 22, and the transmission gear 22 is rotatably installed inside the hollow frame 2. The hollow frame 2 has a vertical sliding groove 25 on its side. Each support plate 11 has a fixed block 23 fixedly installed on its top side. Each fixed block 23 has a vertically fixed transmission rack 24 on its side, and the transmission rack 24 and the sliding groove 25 are in the same vertical position. When the transmission rack 24 is inside the sliding groove 25, the side of the transmission rack 24 meshes with the outside of the transmission gear 22.

[0037] For example, when transferring the pin workpieces processed in the salt bath from inside the support plate 13, the rotating rod 21 and the support plate 13 can be driven to rotate synchronously by the continuous vertical lifting drive of the electric push rod 16, combined with the meshing transmission of the transmission gear 22 and the transmission rack 24. This allows the pin workpieces inserted inside the support plate 13 to automatically fall out of the support plate 13 under their own gravity during the rotation process, thus enabling rapid transfer of a large number of pin workpieces. In the traditional solution, when transferring the pin workpieces processed in the salt bath, the operator can only manually pull the pin workpieces that are equidistantly inserted inside the support plate 13. For a large number of pin workpieces, the operation steps required to pull them out one by one are too cumbersome and labor-intensive, which also affects the efficiency of salt bath processing of the same batch of pins.

[0038] In the specific implementation of this solution, after the electric actuator 16 rotates and drives the bearing plate 13 to rise vertically in sync, the sliding plate and the hollow frame 2 can be driven to rise vertically in sync under the transmission action of the connecting plate 17 and the connecting block 18. After the limiting slider 27 moves out of the guide frame 26, the transmission rack 24 is inserted into the sliding groove 25 of the hollow frame 2 from the top. Under the meshing transmission action of the transmission rack 24 and the transmission gear 22, the bearing plate 13 drives the pin shaft workpiece to rise vertically in sync, and the transmission gear 22 drives the pin shaft workpiece to rise vertically in sync. The rotating rod 21 rotates synchronously, which in turn causes the bearing plate 13 to flip synchronously. This allows the pin workpiece after salt bath processing to be lifted vertically and rotated, causing it to flip and tip over. This allows the operator to simply catch the pin workpiece falling from the bottom of the bearing plate 13 to complete the transfer of the salt bath processed pin workpiece. This reduces the number of steps and labor required for the operator to pull and transfer a large number of pin workpieces sequentially, thereby improving the efficiency of salt bath processing of pin workpieces.

[0039] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0040] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A pin-shaft salt bath composite treatment rack, comprising two sets of support bases (1), characterized in that, Support plates (11) are vertically fixedly installed on the top side of the two sets of support bases (1), lifting plates (12) are slidably installed on the side of the support plates (11), hollow frames (2) are fixedly installed on the side of the lifting plates (12), and bearing plates (13) are rotatably installed between the sides of the hollow frames (2). The hollow frame (2) is provided with a flipping mechanism inside, and the flipping mechanism is connected to the bearing plate (13) in a transmission manner. The bearing plate (13) is provided with a guide limiting mechanism on the outside. The bearing plate (13) has a vertically penetrating groove (14), and there are several sets of grooves (14). Each groove (14) has a retaining arc plate (46) movably installed on its inner side wall. The bearing plate (13) is equipped with a synchronization mechanism, and the synchronization mechanism is connected to the outer side of the retaining arc plate (46) via a transmission.

2. The pin-shaft salt bath composite treatment rack as described in claim 1, characterized in that, The flipping mechanism includes a transmission rack (24) and a transmission gear (22). A rotating rod (21) is installed laterally inside the middle of each hollow frame (2) via a bearing. The top side of the rotating rod (21) is fixedly connected to the outside of the bearing plate (13). The middle end of the rotating rod (21) is fixedly sleeved with the transmission gear (22), and the transmission gear (22) is rotatably installed inside the hollow frame (2). A sliding groove (25) is vertically opened on the side of the hollow frame (2). A fixing block (23) is fixedly installed on the top side of each support plate (11). A transmission rack (24) is vertically fixedly installed on the side of each fixing block (23), and the transmission rack (24) and the sliding groove (25) are in the same vertical position.

3. The pin-shaft salt bath composite treatment rack as described in claim 2, characterized in that, A fixing plate (15) is fixedly installed on the bottom side of the support base (1). An electric push rod (16) is fixedly installed on the top middle of the fixing plate (15). A connecting plate (17) is fixedly installed on the top of the drive shaft of the electric push rod (16). A connecting block (18) is fixedly installed on the middle side of each connecting plate (17). The top side of the connecting block (18) is fixedly connected to the outer wall of the lifting plate (12). A guide groove (19) is vertically opened in the middle of each support plate (11). The connecting block (18) is slidably inserted into the guide groove (19).

4. The pin-shaft salt bath composite treatment rack as described in claim 3, characterized in that, The guide limiting mechanism includes a guide frame (26) and a guide slider. Each support plate (11) has a fixed plate (15) fixedly installed longitudinally at both ends of its side. Each fixed plate (15) has a guide frame (26) fixedly installed on the side away from the support base (1). The guide frame (26) is located outside the bearing plate (13). Each guide frame (26) has a vertically opened limiting groove (28) inside. Each bearing plate (13) has a limiting slider (27) fixedly installed at both ends of its side, and the limiting slider (27) is slidably inserted into the limiting groove (28).

5. The pin-shaft salt bath composite treatment rack as described in claim 1, characterized in that, The synchronization mechanism includes a push plate (42), a transmission plate (43), and a connecting rod (44). The push plate (42) is slidably installed on the inner side of the bearing plate (13). The transmission plate (43) is slidably installed on the inner side of the bearing plate (13). The connecting rod (44) is longitudinally fixed between the outer sides of the push plate (42) and the transmission plate (43) and between the sides of two adjacent sets of transmission plates (43). An installation block (45) is fixedly installed at the middle of the side of each abutting arc plate (46), and the side of the installation block (45) is fixedly connected to the outer wall of the push plate (42) and the transmission plate (43).

6. The pin-shaft salt bath composite treatment rack as described in claim 5, characterized in that, The bearing plate (13) has a first movable groove (4) opened horizontally inside. The push plate (42) and the transmission plate (43) are both slidably installed inside the first movable groove (4). The bearing plate (13) has a second movable groove (41) opened longitudinally on both sides inside. The connecting rod (44) is slidably installed inside the second movable groove (41).

7. The pin-shaft salt bath composite treatment rack as described in claim 6, characterized in that, The middle of the side of the bearing plate (13) is screwed with an adjusting bolt (31) through a thread, and the top of the side of the adjusting bolt (31) is inserted into the side of the push plate (42) through a bearing. Both ends of the side of the push plate (42) are longitudinally fixed with guide rods (3), and the guide rods (3) are slidably inserted into the side of the bearing plate (13).

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