Continuous heating furnace for heating elastic strips

Abstract

The continuous heating furnace comprises a furnace body, a plurality of top electric heating pipes are fixedly connected to the top face of the inner side of the furnace body, and the left side and the right side of the upper portion of the inner side of the furnace body are each provided with a set of side wall electric heating pipes. The conveying belt and the feeding box are arranged, the conveying belt for preheating the elastic strips is arranged on the lower portion of the furnace body, and along with conveying of the conveying belt, the elastic strips pass through the furnace body through the conveying belt before being heated, so that heat of the lower portion of the furnace body preheats the elastic strips; at the moment, a winch is started to wind a steel wire rope, the steel wire rope pulls the lifting hopper to ascend, and when the height of a discharging opening of the lifting hopper corresponds to the height of a material guiding hopper of the feeding box, a knocking hammer is started in combination with the arrangement of the knocking hammer; and the elastic strips arranged in the lifting hopper are transferred to the guide hopper from the discharge port under the action of the bottom slope surface of the lifting hopper, and are transferred to the electric roller from the guide hopper, so that the purpose of efficiently heating the elastic strips is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring bar processing, in particular to a continuous heating furnace for heating the spring bars. Background Art

[0002] The spring clip is a key component of the spring clip type fastening. It is used to fix the rails. It mainly utilizes the energy stored during elastic deformation to alleviate the vibration and impact during driving. In the process of making the spring clip, it is necessary to heat the spring clip raw material to facilitate the subsequent bending of the spring clip raw material. Continuous heating furnaces are now mostly used to complete the heating work of the spring clip. In actual use, it has the advantages of high work efficiency, safe use and simple operation.

[0003] After searching, the application number CN201821686670.3 is a cooling device (1) for a continuous heating furnace, characterized in that it has: a tunnel-shaped shell (2) connected to the furnace body of the continuous heating furnace; a conveying unit (3) for conveying the object to be processed inside the shell; an upper cooling unit, arranged above the shell; a lower cooling unit, arranged below the shell; and a side cooling unit, arranged on the side of the shell, wherein the side cooling unit includes an indirect cooling side cooling jacket (33). According to the cooling device involved in the utility model, even if the heat treatment time is shortened and the weight of the object to be processed is increased, the temperature at the outlet of the cooling device can be effectively reduced without lengthening the device.

[0004] However, the above-mentioned continuous heating furnace is not provided with a preheating structure, and there is a problem that the heating effect of the spring bar is not good when the spring bar passes through the furnace body at one time.

[0005] To this end, a continuous heating furnace for spring bar heating is proposed, which has the advantages of convenient spring bar preheating, high thermal energy utilization rate and convenient rotary loading, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a continuous heating furnace for spring bar heating.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a continuous heating furnace for spring bar heating, comprising a furnace body, a plurality of top electric heating tubes are fixedly connected to the top surface of the inner side of the furnace body, and a group of side wall electric heating tubes are respectively arranged on the left and right sides of the upper inner side of the furnace body, a feed port and a discharge port are respectively opened at both ends of the furnace body, and a plurality of electric rollers are equidistantly arranged between the feed port and the discharge port, a conveyor belt is arranged in parallel below the plurality of electric rollers, and both ends of the conveyor belt extend to the outer side of the furnace body, and the furnace A feeding box is movably provided at the right end of the body, and a guide hopper extending to the feeding port is provided on the upper surface of the feeding box, and a receiving port is provided on the lower surface of the feeding box corresponding to the conveyor belt, a lifting bucket is provided at the bottom inner side of the feeding box, and a pneumatic percussion hammer is fixedly connected to the slope surface of the bottom of the lifting bucket, a winch is fixedly installed on the top of the feeding box, and a steel wire rope is wound around the drum of the winch, the steel wire rope passes through the feeding box and is connected with a rope buckle at the open end of the lifting bucket, and a discharge port is provided on the side of the lifting bucket facing the receiving port.

[0008] As a further description of the above technical solution: a sliding rod is welded at the inner edge of the loading box, and a sliding sleeve connected to the side wall of the lifting bucket is sleeved on the surface of the sliding rod.

[0009] As a further description of the above technical solution: the side of the lifting bucket with the discharge port is in contact with the inner wall of the loading box, and a visual window is embedded and installed on the side wall of the loading box corresponding to the lifting bucket.

[0010] As a further description of the above technical solution: a material guide inclined plate is welded to the inner bottom of the receiving port, and one end of the material guide inclined plate is tangent to the arc portion of the end of the conveyor belt.

[0011] As a further description of the above technical solution: the cross-section of the guide hopper is a U-shaped structure, and the guide hopper is inclined relative to the loading box.

[0012] As a further description of the above technical solution: rectangular openings are provided at both ends of the lower part of the furnace body corresponding to the conveyor belts.

[0013] As a further description of the above technical solution: a hot air pipe is connected between the furnace body and the loading box, and an induced draft fan is arranged on the surface of the hot air pipe.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides a conveyor belt and a loading box, and provides a conveyor belt for preheating spring bars at the lower part of the furnace body. As the conveyor belt is transported, the spring bars pass through the furnace body via the conveyor belt before being heated, so that the heat at the lower part of the furnace body preheats the spring bars until the preheated spring bars fall into the lifting bucket of the loading box under the action of the guide inclined plate. At this time, the winch is started to reel in the wire rope, and the wire rope pulls the lifting bucket up. When the height of the discharge port of the lifting bucket corresponds to the height of the guide bucket of the loading box, combined with the setting of starting the percussion hammer, the spring bars built into the lifting bucket are transferred from the discharge port to the guide bucket under the action of the bottom slope surface thereof, and then transferred from the guide bucket to the electric roller, so as to achieve the purpose of efficient heating of the spring bars. Compared with the prior art, the furnace body is equipped with a conveyor belt and a loading box, which has the advantages of convenient preheating of the spring bars, high thermal energy utilization rate and convenient rotary loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a continuous heating furnace for spring bar heating according to the utility model;

[0017] Figure 2 This is a cross-sectional view of the furnace body of the continuous heating furnace for spring-bar heating of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the structure of the loading box of the continuous heating furnace for spring bar heating.

[0019] Legend:

[0020] 1. Furnace body; 2. Top electric heating tube; 3. Side wall electric heating tube; 4. Feed port; 5. Discharge port; 6. Electric roller; 7. Conveyor belt; 8. Loading box; 9. Guide hopper; 10. Winch; 11. Wire rope; 12. Slide bar; 13. Lifting bucket; 14. Slide sleeve; 15. Pneumatic hammer; 16. Discharge port; 17. Visual window; 18. Receiving port; 19. Guide ramp. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] According to an embodiment of the utility model, a continuous heating furnace for spring bar heating is provided.

[0023] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, the continuous heating furnace for spring strip heating according to the embodiment of the utility model comprises a furnace body 1, a plurality of top electric heating tubes 2 are fixedly connected to the inner top surface of the furnace body 1, and a group of side wall electric heating tubes 3 are respectively arranged on the left and right sides of the inner upper part of the furnace body 1, a feed port 4 and a discharge port 5 are respectively opened at both ends of the furnace body 1, and a plurality of electric rollers 6 are equidistantly arranged between the feed port 4 and the discharge port 5, a conveyor belt 7 is arranged in parallel below the plurality of electric rollers 6, and both ends of the conveyor belt 7 extend to the outside of the furnace body 1, a loading box 8 is movably arranged at the right end of the furnace body 1, and a guide hopper 9 extending to the feed port 4 is arranged on the upper surface of the loading box 8, and a receiving port 18 is opened on the lower surface of the loading box 8 corresponding to the conveyor belt 7, a lifting bucket 13 is arranged at the inner bottom of the loading box 8, and a pneumatic percussion hammer 15 is fixedly connected to the slope surface of the bottom of the lifting bucket 13, and the top of the loading box 8 is fixedly installed A winch 10 is installed, and a steel wire rope 11 is wound and connected on the drum of the winch 10. The steel wire rope 11 passes through the loading box 8 and is connected to the open end rope buckle of the lifting bucket 13. A discharge port 16 is provided on the side of the lifting bucket 13 facing the receiving port 18. The control method of the utility model is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply belong to the common knowledge in this field, and the utility model is mainly used to protect the mechanical device, so the utility model does not explain the control method and wiring arrangement in detail. In order to increase the uniformity of heating, a number of top electric heating tubes 2 and two groups of side wall electric heating tubes 3 are set, and the heating range is wider. The top electric heating tube 2 and the side wall electric heating tube 3 can be turned on as needed. The principle of the electric roller 6 and the conveyor belt 7 is an existing known technology, and there are mature products, so the principle is not further explained;

[0024] In one embodiment, a slide rod 12 is welded at the inner edge of the loading box 8, and a slide sleeve 14 connected to the side wall of the lifting bucket 13 is sleeved on the surface of the slide rod 12. Through the arrangement of the slide rod 12 and the slide sleeve 14, the smoothness of the lifting bucket 13 can be increased, wherein the connection between the slide rod 12 and the slide sleeve 14 does not affect the subsequent vibration discharging of the lifting bucket 13.

[0025] In one embodiment, a side of the lifting bucket 13 with a discharge port 16 is in contact with the inner wall of the loading box 8, and a visual window 17 is embedded in the side wall of the loading box 8 corresponding to the lifting bucket 13. The visual window 17 can be used to observe the height of the lifting bucket 13, which is beneficial to the rotation and loading of the spring strip.

[0026] In one embodiment, a material guide inclined plate 19 is welded to the inner bottom of the receiving port 18, and one end of the material guide inclined plate 19 is tangent to the arc portion of the end of the conveyor belt 7. Through the setting of the material guide inclined plate 19, the preheated elastic strips can be guided so that they can enter the lifting bucket 13.

[0027] In one embodiment, the cross-section of the guide hopper 9 is U-shaped, and the guide hopper 9 is inclined relative to the loading box 8. Through the setting of the guide hopper 9, the elastic strips can be transferred to the electric roller 6, so as to achieve the purpose of heating the elastic strips while conveying them.

[0028] In one embodiment, rectangular openings are provided at both ends of the lower portion of the furnace body 1 corresponding to the conveyor belt 7 , and the conveyor belt 7 is easily placed by providing the rectangular openings.

[0029] In one embodiment, a hot air duct is connected between the furnace body 1 and the loading box 8, and an induced draft fan is arranged on the surface of the hot air duct. Through the arrangement of the hot air duct and the induced draft fan, the hot air in the furnace body 1 can be easily introduced into the loading box 8 to compensate for the heat loss in the preheating rotation stage of the spring bar and ensure the efficient heating of the spring bar.

[0030] Working principle:

[0031] When in use, first place the spring strip to be heated on the conveyor belt 7, then start the conveyor belt 7 to convey the spring strip. As the conveyor belt 7 is conveyed, the spring strip passes through the furnace body 1 via the conveyor belt 7 before being heated, so that the heat from the lower part of the furnace body 1 preheats the spring strip until the preheated spring strip falls into the lifting bucket 13 of the loading box 8 under the guidance of the guide ramp 19. When the lifting bucket 13 is fully loaded with spring strips, start the winch 10 to reel in the wire rope 11, and the wire rope 11 pulls the lifting bucket 13 up, and the discharge of the lifting bucket 13 is completed. When the height of the opening 16 corresponds to the height of the guide hopper 9 of the loading box 8, the percussion hammer is started, so that the percussion hammer forces the lifting bucket 13 to vibrate, and the elastic bars built into the lifting bucket 13 are transferred from the discharge opening 16 to the guide hopper 9 under the action of the bottom slope surface thereof, and then transferred from the guide hopper 9 to the electric roller 6. As the electric roller 6 conveys the elastic bars, combined with the opening of the top electric heating tube 2 and the side wall electric heating tube 3 built into the furnace body 1, the elastic bars are efficiently heated, and the heated elastic bars are discharged from the furnace body 1 through the discharge opening 5, and then cooled.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous heating furnace for spring bar heating, comprising a furnace body (1), characterized in that: A plurality of top electric heating tubes (2) are fixedly connected to the inner top surface of the furnace body (1), and a group of side wall electric heating tubes (3) are respectively arranged on the left and right sides of the inner upper part of the furnace body (1), a feed port (4) and a discharge port (5) are respectively opened at both ends of the furnace body (1), and a plurality of electric rollers (6) are equidistantly arranged between the feed port (4) and the discharge port (5), a conveyor belt (7) is arranged in parallel below the plurality of electric rollers (6), and both ends of the conveyor belt (7) extend to the outside of the furnace body (1), a loading box (8) is movably arranged at the right end of the furnace body (1), and a top surface of the loading box (8) is arranged extending to the feed port (4) and a guide hopper (9), and a receiving port (18) is provided on the lower surface of the loading box (8) corresponding to the conveyor belt (7), a lifting bucket (13) is provided at the inner bottom of the loading box (8), and a pneumatic percussion hammer (15) is fixedly connected to the slope surface at the bottom of the lifting bucket (13), a winch (10) is fixedly installed on the top of the loading box (8), and a steel wire rope (11) is wound around the drum of the winch (10), the steel wire rope (11) passes through the loading box (8) and is connected to the open end rope buckle of the lifting bucket (13), and a discharge port (16) is provided on the side of the lifting bucket (13) facing the receiving port (18).

2. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: A sliding rod (12) is welded at the inner edge of the loading box (8), and a sliding sleeve (14) connected to the side wall of the lifting bucket (13) is sleeved on the surface of the sliding rod (12).

3. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: The side of the lifting bucket (13) with the discharge port (16) is in contact with the inner wall of the loading box (8), and a visual window (17) is embedded and installed on the side wall of the loading box (8) corresponding to the lifting bucket (13).

4. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: A material guide inclined plate (19) is welded to the inner bottom of the receiving port (18), and one end of the material guide inclined plate (19) is tangent to the arc portion of the end of the conveyor belt (7).

5. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: The cross section of the guide hopper (9) is a U-shaped structure, and the guide hopper (9) is arranged obliquely with respect to the loading box (8).

6. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: Both ends of the lower part of the furnace body (1) are provided with rectangular openings corresponding to the conveyor belt (7).

7. The continuous heating furnace for spring bar heating according to claim 1, characterized in that: A hot air pipe is connected between the furnace body (1) and the loading box (8), and an induced draft fan is arranged on the surface of the hot air pipe.

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