Automatic treatment equipment in tungsten filament shaping process based on heat treatment

Abstract

The invention discloses automatic treatment equipment in a tungsten filament shaping process based on heat treatment, relates to the technical field of infrared lamp production, and aims at a heat treatment process of a tungsten filament core assembly in an infrared heating lamp, a self-heating heat source supply mode is adopted, and an automatic operation mode is provided on the basis. The automatic feeding device is essentially characterized in that the reciprocating movement process of a tungsten filament core assembly relative to the interior of a heating furnace is achieved through the reciprocating winding process of a guide rope in a guide ring, the automatic feeding mode of the tungsten filament core assembly is automatically completed, and on this basis, firstly, connection of the guide rope relative to the tungsten filament core assembly is improved; on one hand, the electrifying process of the tungsten filament core is maintained, on the other hand, the stretching degree of the tungsten filament core assembly is maintained, the heat treatment process of the tungsten filament core assembly is indirectly fed back further according to the pressure detection mode in the jumper detection section, and on the basis of maintaining the heat treatment quality of the tungsten filament core assembly, the heat treatment efficiency is improved. The method is mainly used for maintaining the shaping degree of the tungsten filament core assembly.

Description

Technical Field

[0001] The invention relates to the technical field of infrared lamp production, in particular to automatic processing equipment in a tungsten wire shaping process based on heat treatment. Background Art

[0002] Referring to publication numbers CN1883230A and CN102056352A, a brief description of the infrared heating lamp is given. The key structure is the internal tungsten filament assembly. Supplementary explanation is given on the production process of the tungsten filament assembly: the tungsten filament is continuously wound around the core rod and then wrapped around the bracket. Finally, the tungsten filament assembly is heat treated to complete the shaping.

[0003] The heat treatment process of tungsten filament components is different from conventional heat treatment methods (external heating). Instead, it adopts a combined heat treatment method of self-heating + external heating. The essence of self-heating is to directly apply electricity to the tungsten filament components to generate self-heating. The operation process requires the cooperation of two operators, and the operation is very simple. After fixing the tungsten filament components, the two people work together to pull the tungsten filament components into the furnace and connect the power. The processing time is mainly controlled by empirical parameters. It can be explained that two operators are required on a single process line, but the actual operation process is only the loading and unloading process of the tungsten filament components, and the work efficiency is relatively low.

[0004] The key point to be explained is that the purpose of heat treatment of tungsten wire components is mainly to improve mechanical properties. Because the length of tungsten wire components is relatively long, with specifications including 1.2m, 1.8m, 2.5m, 3.8m, etc., there is an obvious drooping force in the tungsten wire components when fixing them. If manual operation is mainly used, it is difficult for operators to discover this problem in time. Then, after the tungsten wire components are drooped in the middle and the heat treatment is completed, the finalized tungsten wire components will show local bending. This application proposes a solution to this problem. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic processing equipment in the tungsten wire shaping process based on heat treatment. The heat treatment process of the tungsten wire assembly in the infrared heating lamp is different from the external heating method in the conventional heat treatment method. Also, because the length of the tungsten wire assembly is relatively long, the efficiency is low during manual operation, and it is also difficult to grasp the heat treatment status in the furnace, resulting in quality problems of varying degrees in the tungsten wire assembly that has completed the heat treatment.

[0006] The object of the present invention can be achieved by the following technical solution: an automatic processing device in a tungsten wire shaping process based on heat treatment, comprising a long-distance tooling table and a power box assembly, wherein a heating furnace is installed at one end of the long-distance tooling table, and guide rings are provided at both ends of the long-distance tooling table, and a closed-loop retractable structure is provided through the guide rings, and the closed-loop retractable structure includes a guide rope and an installation box;

[0007] A central through pipe corresponding to the guide rope is installed inside the heating furnace. The guide rope is respectively provided with a wire-releasing section and an autonomous heating section at positions on the upper surface of the long-distance workbench, and a wire-reeling section and a wire-jumping detection section at positions on the lower surface of the long-distance workbench. The wire-releasing section is provided with an end seat, an installation bracket and a heat-resistant steel rope, and the installation bracket is used to place a tungsten wire core assembly.

[0008] It is further configured as follows: a plurality of air ports are opened on the outer wall of the central through pipe, a heat-resistant air pipe is installed at the upper end of the heating furnace, the heat-resistant air pipe is used to inject inert protective gas into the interior of the heating furnace, and the autonomous heating section corresponds to the length area of the heating furnace.

[0009] It is further configured as follows: two guide ropes are provided along the setting position of the line-paying segment, the end seats are respectively installed on one end position of the two guide ropes, one of the mounting brackets is installed in the end seat and is set to a fixed position, and the heat-resistant steel rope is installed in the middle position of the end seat in the two fixed positions.

[0010] It is further configured as follows: each of the mounting brackets is slidably connected in the heat-resistant steel cable and is configured as an adjustment position, and the mounting brackets are arranged at equal distances according to the length of the tungsten wire core assembly.

[0011] It is further configured that: electrical connectors corresponding to the tungsten wire core component and the power box assembly are provided on the two end seats.

[0012] It is further configured as follows: the end seat is conical in a direction close to the central through tube, and the outer edge diameter of the end seat is equal to the inner diameter of the central through tube.

[0013] It is further configured as follows: the take-up section is arranged at the position of the corresponding installation box, a take-up wheel with a corresponding guide rope is rotatably installed inside the installation box, and a drive motor is installed inside the installation box, a cooperative gear set is installed at the output end position of the drive motor and the center point position of the outer wall of the take-up wheel, and the other end position of the guide rope is tied to the take-up wheel.

[0014] It is further configured as follows: a pressure sensing component is installed on the lower surface of the long-distance workbench corresponding to the jumper detection section, a mounting seat is installed on the output end of the pressure sensing component, and a pressure wheel corresponding to the guide rope is rotatably installed in the mounting seat.

[0015] It is further configured as follows: the wire jumper detection section is located at both ends of the wire take-up section, the guide rope located in the wire jumper detection section is in an upwardly curved arch shape, and a balancing guide wheel is provided at the middle position of the long-distance workbench corresponding to the wire jumper detection section and the wire take-up section.

[0016] The present invention has the following beneficial effects:

[0017] 1. The heat treatment process of the tungsten filament core components in infrared heating lamps is different from conventional heat treatment methods. Instead, it adopts a self-heating heat source supply method. Specifically, the tungsten filament core components are heated by electricity. The key is to realize the automatic loading and unloading process of the tungsten filament core components through the reciprocating winding process of the guide rope relative to the heating furnace. Compared with the conventional manual operation method, a single person can complete the operation requirements of two or even more process lines. Specifically, the pay-off section is the key part. The end seat can maintain the electrical connection of the tungsten filament core components and can also meet the heat treatment requirements of tungsten filament core components of different lengths by adjusting the placement of multiple mounting brackets.

[0018] 2. Supplementary explanation based on the above content: The end seat serves the purpose of maintaining the tension of the tungsten wire core assembly. The key lies in: the jumper detection section set at the lower side of the long-distance workbench is mainly used to change the bending degree of the guide wire during the continuous winding process. Specifically, the pressure wheel bears the tension change during the conduction process of the guide wire. Its essence is to feedback the straightening state of the tungsten wire core assembly in the heating furnace according to the pressure change on the pressure wheel, and can also cooperate with the power output process of the power box assembly to jointly feedback the heat treatment process of the tungsten wire core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the automatic processing equipment in the tungsten wire shaping process based on heat treatment proposed by the present invention;

[0021] Figure 2 is a cross-sectional view of the heating furnace of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the line segment in the present invention;

[0023] Figure 4 It is a working schematic diagram of the present invention;

[0024] Figure 5 Schematic diagram of the structure of the take-up segment in the present invention;

[0025] Figure 6 It is a structural diagram of the jumper detection section in the present invention.

[0026] In the figure: 1. Long-distance workbench; 2. Guide ring; 3. Mounting box; 301. Take-up wheel; 302. Cooperative gear set; 303. Drive motor; 4. Heating furnace; 401. Center through-tube; 5. Heat-resistant air pipe; 6. Power box assembly; 7. End seat; 8. Mounting bracket; 9. Heat-resistant steel cable; 10. Pressure wheel; 11. Mounting seat; 12. Pressure sensor assembly. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0028] Example 1: Regarding the heat treatment process of the tungsten filament assembly in the infrared heating lamp, because it is different from the external heating method in the conventional heat treatment method, and because the tungsten filament assembly is relatively long, the manual operation efficiency is low, and it is also difficult to control the heat treatment status in the furnace. As a result, the tungsten filament assembly that has completed the heat treatment has quality problems to varying degrees. The following technical solutions are proposed:

[0029] Reference Figures 1 to 6 The automatic processing equipment in the tungsten wire shaping process based on heat treatment in this embodiment includes a long-distance tooling table 1 and a power box assembly 6. A heating furnace 4 is installed at one end of the long-distance tooling table 1, and guide rings 2 are provided at both ends of the long-distance tooling table 1. A closed-loop retractable structure is provided through the guide rings 2. The closed-loop retractable structure includes a guide rope and an installation box 3.

[0030] A central through pipe 401 corresponding to the guide rope is installed inside the heating furnace 4. The guide rope is respectively provided with a pay-off section and an autonomous heating section at positions on the upper surface of the long-distance workbench 1, and a take-up section and a jumper detection section are respectively provided at positions on the lower surface of the long-distance workbench 1. The pay-off section is provided with an end seat 7, an installation bracket 8 and a heat-resistant steel rope 9. The installation bracket 8 is used to place a tungsten wire core assembly. Multiple air ports are opened on the outer wall of the central through pipe 401. A heat-resistant air pipe 5 is installed at the upper end of the heating furnace 4. The heat-resistant air pipe 5 is used to inject inert protective gas into the inside of the heating furnace 4. The autonomous heating section corresponds to the length area of the heating furnace 4.

[0031] Basic Principle: A brief description of the tungsten filament shaping process in infrared heating lamps: The tungsten filament core assembly has a relatively simple structure. It is essentially a core rod wrapped with tungsten filament and is not completely horizontal. Therefore, conventional methods improve the mechanical properties through heat treatment. To ensure that the tungsten filament core assembly is placed in the quartz tube in a completely centered manner, the tungsten filament core assembly needs to be in a completely straight state after heat treatment. Therefore, the present invention proposes to use a guide rope as the basic structure for loading and unloading the guide rope;

[0032] by Figure 4 For example, Figure 4 The position in the middle represents the basic position of the tungsten wire core component during the heat treatment process. After the tungsten wire core component to be treated is placed in the pay-off section, the take-up section is used to drive the entire guide rope to wind in a clockwise direction, so that the tungsten wire core component located in the pay-off section continues to enter the self-heating section in the horizontal direction, which means that the tungsten wire core component directly enters the heating furnace. The heat treatment method of the tungsten wire core component is different from the conventional heat treatment method. Specifically, the power box assembly 6 is used to continuously energize and heat the tungsten wire core component, and the heat treatment process of the tungsten wire core component is completed in a self-heating manner.

[0033] Example 2: Based on Example 1, the following describes the line segments:

[0034] There are two guide ropes set along the setting position of the line-laying section, and the end seats 7 are respectively installed at one end position of the two guide ropes, one of the mounting brackets 8 is installed in the end seat 7 and set to a fixed position, and the heat-resistant steel rope 9 is installed in the middle position of the end seat 7 in the two fixed positions. In addition, each mounting bracket 8 is slidably connected in the heat-resistant steel rope 9 and is set to an adjustment position, and the mounting brackets 8 are arranged equidistantly according to the length of the tungsten wire core assembly. The two end seats 7 are provided with electrical connectors corresponding to the tungsten wire core assembly and the power box assembly 6. The end seat 7 is conical in the direction close to the central through tube 401, and the outer edge diameter of the end seat 7 is equal to the inner diameter of the central through tube 401.

[0035] Solution Description: Refer to Figure 4It can be seen that the guide rope is a closed loop structure, but the guide rope in the present invention is a blank section in the pay-off section, so it can be understood that: there are actually two guide ropes in the closed loop structure in the present invention, and the pay-off section is located in the middle of the two guide ropes. First, a mounting bracket 8 is installed in the end seat 7. The end seat 7 and the mounting bracket 8 can both use insulating heat-resistant materials, such as ceramic materials, but a heat-resistant steel rope 9 is installed between the two end seats 7. The heat-resistant steel rope needs to have certain flexibility and good heat resistance. This can be understood as: the heat-resistant steel rope and the two guide ropes are combined to form a complete closed loop structure, and in the heat-resistant steel rope 9, the setting direction of the mounting bracket 8 in each adjustment position can be adjusted according to the length of the tungsten core component, but it must be ensured that the two ends of the tungsten core component must be tied to the electrical connector on the end seat 7, so that the tungsten core component can be energized through the electrical connector through the power box assembly 6;

[0036] After the unwinding section enters the heating furnace 4 during the winding process, the end seat 7 therein will also enter the interior of the central through tube 401. The end seat 7 is mainly used to simply seal the two ends of the central through tube 401. When the power is turned on for heating, it is necessary to use an air pump structure to continuously pump inert protective gas into the heating furnace 4 through the heat-resistant air pipe 5. The main purpose is to pump out the air inside the heating furnace and make the interior of the heating furnace completely filled with inert protective gas. The end seat 7 not only plays the role of electrical connection, but also serves to isolate the heat source.

[0037] Example 3: Combining the wire receiving section and the wire jump detection section for illustration:

[0038] The wire-taking section is arranged at the position corresponding to the installation box 3, and a wire-taking wheel 301 corresponding to the guide rope is rotatably installed inside the installation box 3, and a driving motor 303 is installed inside the installation box 3, and a cooperative gear set 302 is installed at the output end position of the driving motor 303 and the center point position of the outer wall of the wire-taking wheel 301. The other end position of the guide rope is bound to the wire-taking wheel 301, and a pressure sensing component 12 is installed on the lower surface position of the jumper detection section of the long-distance workbench 1, and a mounting seat 11 is installed at the output end position of the pressure sensing component 12. A pressure wheel 10 corresponding to the guide rope is rotatably installed in the mounting seat 11, and the jumper detection sections are located at both ends of the wire-taking section, and the guide rope located at the jumper detection section is in the shape of an upwardly curved arch, and a balancing guide wheel is provided at the middle position between the jumper detection section and the wire-taking section of the long-distance workbench 1.

[0039] Solution Description: Refer to Figure 5Explanation of the take-up section: Both guide ropes are tied to the winding wheel 301, and the essence of the cooperative gear set 302 is gear one installed on the winding wheel 301 and gear two in the drive motor 303. The two gear ones are not meshed with each other, but gear two is meshed with both gear ones. Therefore, when the drive motor 303 drives gear two to rotate counterclockwise, the two winding wheels will rotate clockwise, thereby limiting the binding direction of the guide ropes on the winding wheel 301. Specifically, when one of the winding wheels is taking up the line, the other winding wheel is paying out the line. The purpose is to ensure that the two guide ropes are wound synchronously without any interference process, and during the winding process of the guide ropes, the tungsten core component in the pay-out section will not be accidentally deformed.

[0040] Further explanation is provided with reference to the second embodiment: first, it is necessary to ensure that the tungsten wire core assembly remains relatively straight during the pay-off section as it passes through the two end mounts 7. Since the two guide ropes are wound synchronously, the tungsten wire core assembly will also remain relatively straight after entering the heating furnace 4.

[0041] However, during the actual heat treatment process, the tungsten wire core assembly may undergo slight changes due to heat changes. In addition, because the tungsten wire core assembly is long, the tungsten wire core assembly undergoes slight length changes due to stress changes during the heat treatment process, resulting in sagging of the tungsten wire core assembly at some locations. If the heat treatment process is completed in this state, the entire tungsten wire core assembly will be slightly bent. Then, after the tungsten wire core assembly in this state is placed in the quartz tube, the centering state of the tungsten wire core assembly cannot be guaranteed. For this purpose, a jumper detection section is added, as shown below:

[0042] Reference Figure 4 and Figure 6 , the guide rope on the pressure wheel 10 does not remain horizontal, but presents an upward curved arch shape. Then, during the normal winding process of the guide rope, the guide rope will generate a stable downward pressure on the pressure wheel 10, which is specifically manifested as a change in the tension of the guide rope on the pressure wheel 10. It should be noted that: this stable state is in the theoretical state that the tungsten core component is completely straight. However, in actual situations, the tension of the guide rope on the pressure wheel 10 changes due to the stress change of the tungsten core component.

[0043] by Figure 4 As a basis for explanation, the jumper detection section on the right side is closest to the heating furnace. When the tungsten wire core assembly in the heating furnace 4 is bent, the tension of the guide rope on the pressure wheel 10 is reduced. In this regard, the pressure sensing assembly 12 is explained. In essence, it is one of the oil cylinder / electric push cylinder / pneumatic cylinder. The oil cylinder is taken as an example.

[0044] In the initial state, the tension in the guide rope is sufficient to drive the pressure wheel downward, so that the hydraulic oil volume or oil pressure inside the oil cylinder is in a relatively stable state. However, when the tungsten core assembly partially sags, the tension of the guide rope on the pressure wheel is reduced. This situation is fed back by the change in the hydraulic oil pressure inside the oil cylinder, and the two guide ropes are driven to be wound simultaneously by the winding wheel 301 again, so that the guide ropes and the tungsten core assembly are tightened again. It should also be noted that the pressure sensing components 12 in the two positions can also be used to jointly judge the shape maintenance process of the tungsten core assembly during the heat treatment process.

[0045] The calculation and analysis process of the parameter of the hydraulic oil pressure inside the oil cylinder is not limited in the present invention, and is only expressed as: when the tungsten wire core component is heat treated, the tension change on the pressure wheel is used to feedback the tension state of the tungsten wire core component. As for the heat treatment process of the tungsten wire core component, it is supplemented that: because it is mainly based on the current of the power box assembly 6, if the tungsten wire core component is powered on and heated, its resistance will change significantly. Therefore, the current value output from the power box assembly 5 to the tungsten wire core component and the current value after passing through the tungsten wire core component can also be used as one of the basis for judging the heat treatment state of the tungsten wire core component. This process is not introduced in the present invention.

[0046] In summary: For the heat treatment process of tungsten filament core components in infrared heating lamps, a self-heating heat source supply method is adopted, and an automated operation method is proposed based on this. Its essence is to realize the reciprocating movement process of the tungsten filament core component relative to the inside of the heating furnace through the reciprocating winding process of the guide rope in the guide ring, thereby automatically completing the automatic feeding method of the tungsten filament core component. Based on this, the connection of the guide rope relative to the tungsten filament core component is first improved. Based on multiple mounting brackets, on the one hand, it maintains the power-on process of the tungsten filament core, and on the other hand, it is mainly used to maintain the stretching degree of the tungsten filament core component, and further indirectly feedbacks the heat treatment process of the tungsten filament core component according to the pressure detection method in the jumper detection section. On the basis of maintaining the heat treatment quality of the tungsten filament core component, it is mainly used to maintain the shaping degree of the tungsten filament core component.

[0047] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic processing device for a tungsten wire shaping process based on heat treatment, comprising a long-distance tooling table (1) and a power supply box assembly (6), characterized in that: A heating furnace (4) is installed at one end of the long-distance tooling platform (1), and guide rings (2) are provided at both ends of the long-distance tooling platform (1). A closed-loop retractable structure is provided through the guide rings (2), and the closed-loop retractable structure includes a guide rope and an installation box (3); A central through pipe (401) corresponding to the guide rope is installed inside the heating furnace (4), and the positions of the guide rope corresponding to the upper surface of the long-distance tooling platform (1) are respectively provided with a wire-releasing section and an autonomous heating section, and the positions of the guide rope corresponding to the lower surface of the long-distance tooling platform (1) are respectively provided with a wire-receiving section and a wire-jumping detection section, and the wire-releasing section is provided with an end seat (7), an installation card seat (8) and a heat-resistant steel rope (9), and the installation card seat (8) is used to place a tungsten wire core component.

2. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 1 is characterized in that: A plurality of gas ports are provided on the outer wall of the central through pipe (401), and a heat-resistant gas pipe (5) is installed at the upper end of the heating furnace (4). The heat-resistant gas pipe (5) is used to inject inert protective gas into the interior of the heating furnace (4). The autonomous heating section corresponds to the length region of the heating furnace (4).

3. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 1 is characterized in that: Two guide ropes are provided along the setting position of the line-laying section, and the end seats (7) are respectively installed at one end position of the two guide ropes, one of the mounting brackets (8) is installed in the end seat (7) and is set to a fixed position, and the heat-resistant steel rope (9) is installed in the middle position of the end seat (7) in the two fixed positions.

4. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 3 is characterized in that: In addition, each of the mounting brackets (8) is slidably connected in the heat-resistant steel cable (9) and is set to an adjustment position, and the mounting brackets (8) are arranged at equal distances according to the length of the tungsten wire core assembly.

5. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 3 is characterized in that: The two end seats (7) are provided with electrical connectors corresponding to the tungsten filament core components and the power box assembly (6).

6. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 3, characterized in that: The end seat (7) is conical in a direction close to the central through tube (401), and the outer diameter of the end seat (7) is equal to the inner diameter of the central through tube (401).

7. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 1 is characterized in that: The wire-taking section is arranged at a position corresponding to the installation box (3); a wire-taking wheel (301) corresponding to the guide rope is rotatably installed inside the installation box (3); a driving motor (303) is installed inside the installation box (3); a cooperating gear set (302) is installed at the output end of the driving motor (303) and the center point of the outer wall of the wire-taking wheel (301); and the other end of the guide rope is bound to the wire-taking wheel (301).

8. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 1 is characterized in that: A pressure sensing assembly (12) is installed on the lower surface of the long-distance tooling platform (1) corresponding to the jumper detection section, a mounting seat (11) is installed at the output end of the pressure sensing assembly (12), and a pressure wheel (10) corresponding to the guide rope is rotatably installed in the mounting seat (11).

9. The automatic processing equipment in the tungsten wire shaping process based on heat treatment according to claim 8, characterized in that: The wire jumper detection section is located at both ends of the wire take-up section, the guide rope located at the wire jumper detection section is in an upwardly curved arch shape, and the long-distance tooling platform (1) is provided with a balancing guide wheel at a middle position corresponding to the wire jumper detection section and the wire take-up section.

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