Intelligent heat treatment production line for circular saw blades

Abstract

The invention provides an intelligent heat treatment production line for circular saw blades, and belongs to the technical field of circular saw blade manufacturing. The problem that in the production process of an existing circular saw blade, the product performance is unbalanced due to the poor constant-temperature uniformity of the heat treatment technology is solved. The device comprises a tempering furnace used for carrying out a high-temperature tempering process and a storage box used for storing the circular saw blades at intervals and putting the circular saw blades into the tempering furnace for a tempering reaction; the storage box comprises a bottom plate, two transverse side plates and two longitudinal side plates, the two transverse side plates and the two longitudinal side plates are fixed to the bottom plate, a plurality of discharging rod sets are transversely and fixedly arranged between the two transverse side plates at intervals, each discharging rod set comprises two discharging rods, a gap between the two discharging rods is large enough to contain a single circular saw blade, and a plurality of through holes are formed in the transverse side plates and the longitudinal side plates.

Description

Technical Field

[0001] This invention belongs to the field of circular saw blade manufacturing technology and relates to an intelligent heat treatment production line for circular saw blades. Background Technology

[0002] Heat treatment is a crucial step in the production of high-speed steel circular saw blades, determining their lifespan, cutting performance, and precision stability. During high-temperature tempering heat treatment, circular saw blades are batched and placed into a high-temperature tempering furnace.

[0003] In existing technologies, a large number of circular saw blade substrates are typically stacked directly and placed into a high-temperature tempering furnace. However, this stacking of circular saw blades during tempering directly leads to severe uneven performance between the blades. The outer blades are fully heated and tempered properly, while the middle blades are underheated and fail to meet tempering standards, ultimately resulting in problems such as hardness deviations, toughness imbalances, and residual internal stress. This is because stacked saw blades experience hindered heat transfer, uneven heat preservation, and asynchronous cooling during heat treatment, which directly disrupts the uniformity of the tempering temperature.

[0004] Therefore, it is of great significance to develop a device that can automatically place circular saw blades in staggered layers, ensuring sufficient gaps between them, and that can automatically load and unload the circular saw blades. Summary of the Invention

[0005] The purpose of this invention is to address the problem that poor temperature uniformity in the heat treatment process can easily lead to product performance imbalance in existing circular saw blade production processes, and to propose an intelligent heat treatment production line for circular saw blades.

[0006] The objective of this invention can be achieved through the following technical solutions: A smart heat treatment production line for circular saw blades includes a tempering furnace for high-temperature tempering and a storage bin for storing circular saw blades at intervals and placing them into the tempering furnace for tempering reaction. The tempering furnace is equipped with an intelligent temperature control system that automatically regulates the temperature. The intelligent temperature control system can automatically complete the tempering process of heating, holding, and cooling the circular saw blades in the furnace, and constantly monitor and regulate the temperature inside the furnace. The intelligent temperature control system executes the tempering process at least three times. The storage bin includes a base plate and two horizontal side plates and two vertical side plates fixed on the base plate. Multiple sets of feeding rods are fixedly arranged horizontally between the two horizontal side plates. Each feeding rod set includes two feeding rods with a gap between them large enough to accommodate a single circular saw blade. Several through holes are opened on the horizontal and vertical side plates.

[0007] In the aforementioned intelligent heat treatment production line for circular saw blades, the storage box can also be detachably equipped with an adjusting rod that can automatically arrange multiple circular saw blades at intervals. The adjusting rod includes an outer rod and an inner rod. The outer rod has a through hole of the same size as the inner rod. The inner rod is movably disposed in the through hole of the outer rod. One end of the through hole of the outer rod is closed by a plug, and the other end of the through hole of the outer rod is not closed, with the inner rod extending outward from that end. Multiple limiting discs are fixedly arranged at intervals on the outer rod. Multiple limiting notches of the same number as the limiting discs are also spaced apart on the outer rod. The limiting notches are connected to the through hole. The limiting discs and limiting notches are arranged alternately in pairs. Multiple limiting plates of the same number as the limiting notches are fixedly arranged on the outer wall of the inner rod. The multiple limiting plates are arranged one-to-one with the multiple limiting notches so that the limiting plates are movably disposed in the limiting notches. When the limiting plate moves to the limiting disc closest to the limiting notch, the limiting plate and the limiting disc form a gap of the thickness of a single circular saw blade.

[0008] In the aforementioned intelligent heat treatment production line for circular saw blades, a spring made of nickel-based high-temperature alloy is fixedly connected to the end of the inner rod at the plug. This spring pushes the inner rod to the position furthest from the adjacent limiting plate in its natural state. The end of the inner rod extending out of the through hole is provided with an arc head. A vertical slot with the same size as the outer rod is opened on one longitudinal side plate of the storage box, and a segmented slot with the same size as the arc head is opened at the corresponding position on the other side plate. The vertical slot and the segmented slot are at the same height. The upper part of the guide channel is an inclined slot and the lower part is a straight slot. The distance between the top end of the inclined slot and the vertical slot is the same as the length of the adjusting rod when it is extended. The distance between the straight slot and the vertical slot is the same as the length of the adjusting rod when it is shortened.

[0009] In the above-mentioned intelligent heat treatment production line for circular saw blades, the tempering furnace is equipped with a rotating platform for placing the storage box. The bottom of the rotating platform is equipped with a rotating assembly for slow rotation. The bottom of the storage box is equipped with support legs, and the storage box is placed on the rotating platform by placing the support legs.

[0010] In the above-mentioned intelligent heat treatment production line for circular saw blades, a conveyor line is provided between the tempering furnace and the storage bin. The conveyor line includes a fixed base frame, and a slide rail is provided between the base frame and the inlet and outlet of the tempering furnace. The bottom of the storage bin is provided with a slider, which is slidably mounted on the slide rail.

[0011] In the aforementioned intelligent heat treatment production line for circular saw blades, the feeding rod assembly has two rows, one above the other.

[0012] In the aforementioned intelligent heat treatment production line for circular saw blades, the intelligent temperature control system includes thermocouple temperature probes set at multiple points for monitoring the temperature inside the furnace, a temperature transmitter and acquisition module for converting temperature signals into electrical signals, a PLC programmable controller for performing calculations based on electrical signals and issuing instructions, and heating actuators, hot air circulation actuators, and cooling actuators for temperature control adjustment according to the issued instructions.

[0013] In the aforementioned intelligent heat treatment production line for circular saw blades, the heating actuators include partitioned stainless steel electric heating tubes and solid-state relays, the hot air circulation actuators include centrifugal hot air circulation fans, and the cooling actuators include electric dampers and cold air inlet valves.

[0014] Compared with existing technologies, this intelligent heat treatment production line can automatically complete the heat treatment process during tempering through an intelligent temperature control system. Furthermore, the entire tempering process ensures sufficient spacing between each circular saw blade, good permeability, and uniform heating. Attached Figure Description

[0015] Figure 1 This is the first structural schematic diagram of this intelligent heat treatment production line; Figure 2 This is the second structural schematic diagram of this intelligent heat treatment production line; Figure 3 This is a schematic diagram illustrating the structural principle of the adjusting rod before and after aligning the circular saw blade. Figure 4 This is a schematic diagram illustrating the structural principle of the adjusting rod before and after its extension and retraction behind the concealed outer rod. Figure 5 This is the first structural schematic diagram of the storage bin; Figure 6 This is the second structural schematic diagram of the storage bin; In the diagram, 1. Tempering furnace; 2. Material storage bin; 3. Horizontal side plate; 4. Vertical side plate; 5. Material release rod; 6. Through hole; 7. Outer rod; 8. Inner rod; 9. Blocking part; 10. Limiting plate; 11. Limiting notch; 12. Limiting plate; 13. Spring; 14. Vertical slot; 15. Segmented slot; 16. Rotating platform; 17. Support legs; 18. Base frame; 19. Slide rail. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 and Figure 2 As shown, this intelligent heat treatment production line for circular saw blades includes a tempering furnace 1 for high-temperature tempering and a storage bin 2 for storing circular saw blades at intervals and placing them into the tempering furnace 1 for tempering reaction.

[0018] The tempering furnace 1 is equipped with an intelligent temperature control system that automatically regulates the temperature. The intelligent temperature control system can automatically complete the tempering process of heating, holding and cooling the circular saw blade in the furnace, and monitor and regulate the temperature in the furnace at all times. The intelligent temperature control system executes the tempering process at least 3 times.

[0019] The storage box 2 includes a base plate and two horizontal side plates 3 and two vertical side plates 4 fixed on the base plate. Multiple sets of material feeding rods are fixedly arranged between the two horizontal side plates 3 at a horizontal interval. Each set of material feeding rods includes two material feeding rods 5 with a gap between them large enough to accommodate a single circular saw blade. Several through holes 6 are opened on the horizontal side plates 3 and the vertical side plates 4.

[0020] The storage bin 2 is made of high-temperature resistant material. Compared with the ordinary technique of directly stacking them together and putting them into the tempering furnace 1, the present invention uses a storage bin 2. The circular saw blades are placed in the storage bin 2 with staggered spacing before tempering, which can ensure the uniformity of heating between each circular saw blade.

[0021] If the circular saw blade is placed directly between the material feeding rods 5, the support of the circular saw blade will be provided by the base plate. However, since the core element of the circular saw blade is its edge blades, the bottom blade pressing on the base plate to support the entire circular saw blade before tempering may affect the performance of the bottom blades. Therefore, a better solution is to use the center hole of the circular saw blade for support, so as to avoid any edge blades being subjected to support force.

[0022] Therefore, the present invention also adopts the following technical solutions: like Figure 3 and Figure 4 As shown, the storage box 2 can also be detachably equipped with an adjusting rod that can automatically arrange multiple circular saw blades at intervals. The adjusting rod includes an outer rod 7 and an inner rod 8. The outer rod 7 has a through hole of the same size as the inner rod 8. The inner rod 8 is movably disposed in the through hole of the outer rod 7. One end of the through hole of the outer rod 7 is closed by a plug 9, and the other end of the through hole of the outer rod 7 is not closed, with part of the inner rod 8 extending outward from that end. Multiple limiting discs 10 are fixedly arranged at intervals on the outer rod 7, and multiple limiting discs 10 are also spaced apart on the outer rod 7 in the same number. The limiting notch 11 is connected to the through hole. The limiting plate 10 and the limiting notch 11 are staggered in pairs. The outer wall of the inner rod 8 is fixed with a number of limiting plates 12 that are the same as the number of limiting notches 11. The multiple limiting plates 12 are set one-to-one with the multiple limiting notches 11 so that the limiting plates 12 are movably set in the limiting notches 11. When the limiting plate 12 moves to the limiting plate 10 closest to the limiting notch 11, the limiting plate 12 and the limiting plate 10 form a gap of a single circular saw blade thickness.

[0023] The adjusting rod achieves two effects: first, by hanging the circular saw blade through the center hole of the adjusting rod, the bottom of the circular saw blade will not come into contact with the base plate, thus affecting the blade performance; second, the adjusting rod can automatically complete the alignment and positioning of all the hanging circular saw blades. This is because the reliability of simply using the limiting plate 10 and the limiting plate 12 for positioning is not high. The gap of the feeding rod is still used to limit the circular saw blades again. If the circular saw blades are not aligned, under uncertain conditions, each circular saw blade will bend and shift, making it impossible to accurately insert them through the gap of the feeding rod assembly.

[0024] During operation, the circular saw blade is manually hung between the corresponding limiting plate 10 and the limiting plate 12. No positioning and alignment are required; the inner rod 8 and the outer rod 7 can automatically align it. Therefore, the process of hanging the circular saw blade can also be completed by a robotic arm. The robotic arm does not require particularly high precision positioning function because the adjusting rod itself has positioning function.

[0025] like Figures 3-6 As shown, a spring 13 made of nickel-based high-temperature alloy is fixedly connected to the end of the plug portion 9 and the inner rod 8. The spring 13 pushes the inner rod 8 to the position furthest from the adjacent limiting plate 10 in its natural state. The end of the inner rod 8 extending out of the through hole is provided with an arc head. A vertical slot 14 with the same size as the outer rod 7 is opened on one of the longitudinal side plates 4 of the storage box 2. A segmented slot 15 with the same size as the arc head is opened at the corresponding position on the other side plate. The vertical slot 14 and the segmented slot 15 are at the same height. The upper part of the guide channel is an inclined slot and the lower part is a straight slot. The distance between the top end of the inclined slot and the vertical slot 14 is the same as the length when the adjusting rod is extended. The distance between the straight slot and the vertical slot 14 is the same as the length when the adjusting rod is shortened.

[0026] After placing the adjustment rod, which is covered with circular saw blades, into the vertical slot 14 and the segmented slot 15, it gradually falls under the weight of the adjustment rod itself, which is supported by multiple circular saw blades. Under the action of the inclined slot, the inner rod 8 is compressed and shortened relative to the outer rod 7. At the same time, the spring 13 is compressed until the arc head gradually moves to the bottom of the inclined slot and enters the straight slot. Then the adjustment rod is shortened to its shortest state. In this state, the limiting plate 12 and the limiting disk 10 are closest to each other to squeeze and straighten the circular saw blades between them.

[0027] Therefore, the positioning and alignment process of this invention does not require manual operation. It automatically positions itself when the adjusting rod is mounted on the two longitudinal side plates 4, thus automating the positioning and alignment of the circular saw blade. Using this technology, this invention can be perfectly applied to a robotic arm system, making it feasible to use one robotic arm to hold the adjusting rod and another robotic arm to automatically load and unload the circular saw blade.

[0028] In the diagram, the straight groove and segmented groove 15 appear to be shorter. In reality, the straight groove has a relatively high height. When the adjusting rod is shortened and introduced into the straight groove, the bottom of the circular saw blade does not enter the gap of the feeding rod assembly. The circular saw blade will only enter the gap of the feeding rod assembly after the adjusting rod continues to descend.

[0029] like Figure 1 and Figure 2 As shown, the tempering furnace 1 is provided with a rotating platform 16 for placing the storage box 2. The bottom of the rotating platform 16 is provided with a rotating assembly for slow rotation. The bottom of the storage box 2 is provided with a support leg 17, and the storage box 2 is placed on the rotating platform 16 by placing the support leg 17.

[0030] To improve the uniformity of heating, it is better to rotate the storage bin 2 to change its position.

[0031] like Figure 1 and Figure 2 As shown, a conveyor line is provided between the tempering furnace 1 and the storage bin 2. The conveyor line includes a fixed base frame 18. A slide rail 19 is provided between the base frame 18 and the inlet and outlet of the tempering furnace 1. A slider is provided at the bottom of the storage bin 2 and is slidably mounted on the slide rail 19 through the slider.

[0032] To improve the reliability of positioning, the feeding rod assembly has two rows, one above the other.

[0033] The intelligent temperature control system includes thermocouple temperature probes set at multiple points for monitoring the temperature inside the furnace, a temperature transmitter and acquisition module for converting temperature signals into electrical signals, a PLC programmable controller that performs calculations based on electrical signals and issues instructions, and heating actuators, hot air circulation actuators, and cooling actuators that adjust the temperature according to the issued instructions.

[0034] The heating actuators include partitioned stainless steel electric heating tubes and solid-state relays; the hot air circulation actuators include centrifugal hot air circulation fans; and the cooling actuators include electric dampers and cold air inlet valves.

[0035] It should be understood that in the claims and description of this invention, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0036] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A smart heat treatment production line for circular saw blades, characterized in that: It includes a tempering furnace for high-temperature tempering and a storage bin for storing circular saw blades at intervals and placing them into the tempering furnace for tempering. The tempering furnace is equipped with an intelligent temperature control system that automatically regulates the temperature. The intelligent temperature control system can automatically complete the tempering process of heating, holding, and cooling the circular saw blades in the furnace, and constantly monitor and regulate the temperature inside the furnace. The intelligent temperature control system executes the tempering process at least three times. The storage bin includes a bottom plate and two horizontal side plates and two vertical side plates fixed on the bottom plate. Multiple sets of material feeding rods are fixedly installed between the two horizontal side plates at a horizontal interval. Each set of material feeding rods includes two rods with a gap between them large enough to accommodate a single circular saw blade. Several through holes are opened on the horizontal and vertical side plates.

2. The intelligent heat treatment production line for circular saw blades according to claim 1, characterized in that: The storage box is also detachably equipped with an adjusting rod that automatically arranges multiple circular saw blades at intervals. The adjusting rod includes an outer rod and an inner rod. The outer rod has a through hole of the same size. The inner rod is movably disposed in the through hole of the outer rod. One end of the through hole of the outer rod is closed by a plug, and the other end of the through hole of the outer rod is not closed, with the inner rod extending outward from that end. Multiple limiting discs are fixedly arranged at intervals on the outer rod. Multiple limiting notches of the same number as the limiting discs are also spaced apart on the outer rod. The limiting notches are connected to the through hole. The limiting discs and limiting notches are arranged alternately. Multiple limiting plates of the same number as the limiting notches are fixedly arranged on the outer wall of the inner rod. The multiple limiting plates are arranged one-to-one with the multiple limiting notches so that the limiting plates are movably disposed in the limiting notches. When the limiting plate moves to the limiting disc closest to the limiting notch, the limiting plate and the limiting disc form a gap of the thickness of a single circular saw blade.

3. The intelligent heat treatment production line for circular saw blades according to claim 2, characterized in that: The plug portion is fixedly connected to the end of the inner rod by a spring made of nickel-based high-temperature alloy. This spring pushes the inner rod to the position furthest from the adjacent limiting plate in its natural state. The end of the inner rod extending out of the through hole is provided with an arc head. One longitudinal side plate of the storage box is provided with a vertical slot of the same size as the outer rod. The corresponding position on the other side plate is provided with a segmented slot of the same size as the arc head. The vertical slot and the segmented slot are at the same height. The upper part of the guide channel is an inclined slot and the lower part is a straight slot. The distance between the top end of the inclined slot and the vertical slot is the same as the length of the adjusting rod when it is extended. The distance between the straight slot and the vertical slot is the same as the length of the adjusting rod when it is shortened.

4. The intelligent heat treatment production line for circular saw blades according to claim 1, characterized in that: The tempering furnace is equipped with a rotating platform for placing the storage box. The bottom of the rotating platform is equipped with a rotating assembly for slow rotation. The bottom of the storage box is equipped with support legs, which are used to place the storage box on the rotating platform.

5. The intelligent heat treatment production line for circular saw blades according to claim 1, characterized in that: A conveyor line is provided between the tempering furnace and the storage bin. The conveyor line includes a fixed base frame. A slide rail is provided between the base frame and the inlet and outlet of the tempering furnace. A slider is provided at the bottom of the storage bin and is slidably mounted on the slide rail.

6. The intelligent heat treatment production line for circular saw blades according to claim 1, characterized in that: The feeding rod assembly has two rows, one above the other.

7. The intelligent heat treatment production line for circular saw blades according to claim 1, characterized in that: The intelligent temperature control system includes a multi-point thermocouple temperature probe for monitoring the temperature inside the furnace, a temperature transmitter and acquisition module for converting temperature signals into electrical signals, a PLC programmable controller for performing calculations based on electrical signals and issuing instructions, and heating actuators, hot air circulation actuators, and cooling actuators for temperature control adjustment according to the issued instructions.

8. The intelligent heat treatment production line for circular saw blades according to claim 7, characterized in that: The heating actuators include partitioned stainless steel electric heating tubes and solid-state relays; the hot air circulation actuators include centrifugal hot air circulation fans; and the cooling actuators include electric dampers and cold air inlet valves.

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