A continuous feeding device for a bolt heating furnace

Abstract

The utility model relates to bolt processing technical field discloses a kind of continuous feeding device of bolt heating furnace, including heating platform, the furnace body of heating furnace, multiple furnace mouths, and the position of each furnace mouth is positioned on heating platform and is provided with the support platform for reinforcing bar support, and the upper slide connection of support platform is slidably connected with the storage box for multiple reinforcing bars on heating platform, the lower end of storage box is provided with feeding pipe, the side of feeding pipe lower end is provided with two first guide pipes, first guide pipe is embedded with first clamping plate for supporting the last reinforcing bar of feeding pipe, the side of feeding pipe lower end and located away from first guide pipe is provided with two second guide pipes, second guide pipe is embedded with second clamping plate for supporting the second last reinforcing bar of feeding pipe, pull rod is provided between the end of two first clamping plates away from feeding pipe, connecting rod is provided between the end of two second clamping plates away from feeding pipe, and the end of pull rod and connecting rod is provided with linkage arm of L type.

Description

Technical Field

[0001] This utility model belongs to the field of bolt processing technology, and specifically relates to a continuous feeding device for a bolt heating furnace. Background Technology

[0002] Large bolts are frequently used in the connection of large equipment. In existing technology, the processing technology of large bolts is usually as follows: cutting - cutting steel bars into the length required for the bolt; heating in a heating furnace - pushing the cut steel bars into a heating furnace for heating to 1000 degrees Celsius; stamping - stamping the ends of the heated steel bars with a stamping machine to form the bolt head; cutting - using a lathe to cut the surface of the bolt shank; threading - using a spiral thread rolling machine to process the thread; testing - using a nut to test the thread.

[0003] Currently, Chinese patent publication number CN113862743A, published on December 31, 2021, discloses a surface treatment method for threaded fasteners, including the following steps: 1) placing the threaded fastener in a heating furnace and holding it at 320-400℃ for 45-60 minutes to remove oil from the threaded fastener; wherein, the threaded fastener is a bolt, and the threaded fastener includes a connected screw (11) and a bolt head (13), and the screw (11) is provided with threads (12); 2) using a thin... 1) Use one or more pickling solutions of hydrochloric acid, dilute sulfuric acid, and dilute nitric acid to remove oxides from threaded fasteners; 2) Use purified water to remove acidic solutions from the surface of bolts; 3) Activate the threaded fasteners in an activation solution; 4) Electroplat the threaded fasteners in a zinc-nickel alloy plating solution; 5) Dehydrogenate the threaded fasteners; 6) Passivate the threaded fasteners; 7) Immerse the threaded fasteners in a treatment solution for 1-3 minutes, then remove them and dry them at 60°C to form a protective layer.

[0004] The surface treatment method for this type of threaded fastener involves heating the threaded fastener by directly placing it into a heating furnace. In the prior art, in order to speed up production efficiency, a single operator often needs to operate multiple steel bars for heating at the same time. The operator usually needs to use pliers to remove the steel bars from the storage box one by one before putting them into the heating furnace, which makes the entire feeding process time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to provide a continuous feeding device for a bolt heating furnace, which can conveniently feed multiple steel bars into multiple furnace openings of the heating furnace.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a continuous feeding device for a bolt heating furnace, comprising a heating platform, a furnace body, and multiple furnace openings on the furnace body for the ends of reinforcing bars to extend into. A support platform for supporting reinforcing bars is provided on the heating platform at the position of each furnace opening. A storage box for storing multiple reinforcing bars is slidably connected to the heating platform above the support platform. A feeding pipe is provided at the lower end of the storage box. Two first guide pipes are provided on one side of the lower end of the feeding pipe. A first clamping plate for supporting the penultimate reinforcing bar of the feeding pipe is embedded in the first guide pipe. Two second guide pipes are provided at the lower end of the feeding pipe on the side away from the first guide pipes. A second clamping plate for supporting the penultimate reinforcing bar of the feeding pipe is embedded in the second guide pipe. A pull rod is provided between the ends of the two first clamping plates away from the feeding pipe. A connecting rod is provided between the ends of the two second clamping plates away from the feeding pipe. An L-shaped linkage arm is provided between the ends of the pull rod and the connecting rod.

[0007] A further feature of this invention is that: both sides of the storage box are provided with guide shafts extending in a horizontal direction, both sides of the storage box are provided with movable hanging ears for hanging on the guide shafts, and the end of the guide shaft is provided with a column connected to the heating table.

[0008] A further feature of this invention is that the bottom wall of the storage box is inclined downwards towards the side of the feeding pipe.

[0009] A further feature of this invention is that the cross-section of the support platform is V-shaped.

[0010] A further feature of this invention is that the end of the support platform is integrally provided with an extension arm for extending into the furnace opening.

[0011] A further feature of this invention is that: telescopic columns are provided at both ends of the lower surface of the support platform; a column sleeve is provided on the heating platform for the lower end of the telescopic column to be embedded; an internal threaded sleeve is provided at the upper end of the column sleeve; and an adjusting bolt for abutting against the outer wall of the telescopic column is threaded onto the internal threaded sleeve.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. When multiple steel bars need to be fed into the furnace opening, slide the storage box left and right so that the feeding pipe is aligned with the support platform below. Then pull the lever to move the first clamping plate away from the feeding pipe. At this time, the last steel bar in the feeding pipe will fall into the support platform below after losing the support of the first clamping plate. At the same time, as the first clamping plate moves away from the feeding pipe, the lever can drive the second clamping plate to move towards the feeding pipe through the linkage arm. Thus, the second clamping plate supports the second to last steel bar in the feeding pipe, preventing the second to last steel bar from falling with the last steel bar.

[0014] Then, the lever can be pulled in the opposite direction, causing the first clamping plate to move towards the side closer to the feed pipe, while the second clamping plate moves towards the side farther away from the feed pipe. The second-to-last rebar can then fall onto the first clamping plate, ready for the next rebar release. As the storage box passes through the various support platforms, multiple rebars can be placed on the platforms. Compared to existing technologies where operators need to use pliers to remove the rebars one by one from the storage box, this saves labor and facilitates the rapid, efficient, and continuous feeding of multiple rebars. Once all the rebars on the support platforms are in place, the operator only needs to push the rebars along the support platforms into the furnace opening, allowing the ends of the rebars to easily enter the furnace opening for heating. This allows for the convenient feeding of multiple rebars into the various furnace openings of the heating furnace.

[0015] 2. The storage box is hung on the guide shaft using movable hooks. At this time, the storage box can slide back and forth along the guide shaft. When a batch of steel bars in the storage box is used up, the storage box can be quickly removed from the two guide shafts.

[0016] 3. By tilting the bottom wall of the storage box downwards towards the side of the feeding pipe, the steel bars inside the storage box can fall smoothly and orderly along the feeding pipe.

[0017] 4. The V-shaped cross-section of the support platform allows for convenient storage of steel bars with different cross-sectional diameters, facilitating the processing of bolts of different sizes;

[0018] 5. The extension arm, which is integrally set at the end of the support platform and extends into the furnace opening, can support the end of the steel bar that extends into the furnace opening, thus preventing the steel bar from falling into the furnace body.

[0019] 6. In order to ensure that the end of the reinforcing bar is located in the center of the furnace opening so that the reinforcing bar is heated evenly, the lower side of the support platform uses an expansion column embedded in the column sleeve, and is locked and positioned using adjusting bolts. Finally, the height of the support platform can be adjusted according to the thickness of the reinforcing bar to ensure that the reinforcing bar extends into the center of the furnace opening. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the connection relationship between the support platform and the column sleeve in this utility model;

[0023] Figure 3 This is a structural diagram of the storage box in this utility model. At this time, the first card plate supports the last steel bar in the feed pipe.

[0024] Figure 4 This is a cross-sectional view of the storage box in this utility model. At this time, the first card plate releases the last steel bar in the material tube.

[0025] In the diagram, 1. Heating platform; 2. Furnace body; 21. Furnace opening; 3. Support platform; 31. Extension arm; 32. Telescopic column; 4. Storage box; 41. Feeding pipe; 411. First guide pipe; 412. First clamping plate; 4121. Pull rod; 413. Second guide pipe; 414. Second clamping plate; 4141. Connecting rod; 415. Linkage arm; 42. Moving lug; 5. Guide shaft; 51. Column; 6. Column sleeve; 61. Internal threaded sleeve; 62. Adjusting bolt. Detailed Implementation

[0026] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] A continuous feeding device for a bolt heating furnace, as described in the following figure. Figure 1 , Figure 2The continuous feeding device of this bolt heating furnace includes a heating platform 1, a furnace body 2, and multiple furnace openings 21. The furnace body 2 is installed on the heating platform 1, and the multiple furnace openings 21 are opened on the furnace body 2. The furnace openings 21 allow the ends of the reinforcing bars to be inserted for heating. At the same time, a support platform 3 for supporting the reinforcing bars is provided on the heating platform 1 at the position of each furnace opening 21. The cross-section of the support platform 3 is V-shaped. An extension arm 31 for extending into the furnace opening 21 is integrally provided at the end of the support platform 3. Telescopic columns 32 are welded to both ends of the lower surface of the support platform 3. At the same time, a column sleeve 6 for the lower end of the telescopic column 32 is welded on the heating platform 1. An internal threaded sleeve 61 is integrally provided on the upper end of the column sleeve 6. An adjusting bolt 62 for abutting against the outer wall of the telescopic column 32 is threaded onto the internal threaded sleeve 61.

[0028] Reference Figure 1 A storage box 4 for storing multiple steel bars is slidably connected on the heating platform 1 and above the support platform 3. The bottom wall of the storage box 4 is inclined downward towards the side of the feeding pipe 41. Guide shafts 5 extending in the horizontal direction are provided on both sides of the storage box 4. Movable hanging ears 42 for hanging on the guide shafts 5 are integrally provided on both sides of the storage box 4. At the same time, the end of the guide shaft 5 is welded to a column 51 that is fixedly connected to the heating platform 1 by bolts.

[0029] Reference Figure 1 , Figure 3 , Figure 4 The lower end of the storage box 4 is also integrally provided with a feeding pipe 41 extending vertically downward. Two first guide pipes 411 are integrally provided on one side of the lower end of the feeding pipe 41. A first clamping plate 412 for supporting the penultimate reinforcing bar of the feeding pipe 41 is embedded in the first guide pipe 411. Two second guide pipes 413 are integrally provided on the lower end of the feeding pipe 41 and on the side away from the first guide pipes 411. A second clamping plate 414 for supporting the penultimate reinforcing bar of the feeding pipe 41 is embedded in the second guide pipe 413. A pull rod 4121 is welded between the ends of the two first clamping plates 412 away from the feeding pipe 41. A connecting rod 4141 is welded between the ends of the two second clamping plates 414 away from the feeding pipe 41. An L-shaped linkage arm 415 is welded between the ends of the pull rod 4121 and the connecting rod 4141.

[0030] Principle: When multiple steel bars need to be fed into the furnace opening 21, the receiving box 4 slides left and right along the guide shaft 5 so that the feeding pipe is aligned with the support platform 3 below. Then, the pull rod 4121 is pulled, so that the first clamping plate 412 moves away from the feeding pipe 41. At this time, the last steel bar in the feeding pipe 41 loses the support of the first clamping plate 412 and can fall into the support platform 3 below. At the same time, as the first clamping plate 412 moves away from the feeding pipe 41, the pull rod 4121 can drive the second clamping plate 414 to move towards the feeding pipe 41 through the linkage arm 415. Thus, the second clamping plate 414 supports the second to last steel bar in the feeding pipe 41, preventing the second to last steel bar from falling with the first to last steel bar.

[0031] Then, the lever 4121 can be pulled in the opposite direction, causing the first clamping plate 412 to move towards the side closer to the feeding pipe 41, while the second clamping plate 414 moves towards the side farther away from the feeding pipe 41. The second-to-last rebar can then fall onto the first clamping plate 412, waiting for the next rebar release. As the storage box 4 passes through each support platform 3, multiple rebars can be placed on the multiple support platforms 3 respectively. Compared with the existing technology where operators need to use pliers to remove the rebars one by one from the storage box 4, this saves labor and facilitates the rapid, efficient, and continuous feeding of multiple rebars. After all the rebars on all the support platforms 3 have been placed, the operator only needs to push the rebars along the support platforms 3 into the furnace opening 21, which makes it easy for the ends of the rebars to enter the furnace opening 21 for heating. Finally, it is possible to conveniently send multiple rebars into the multiple furnace openings 21 of the heating furnace.

Claims

1. A continuous feeding device for a bolt heating furnace, comprising a heating platform (1), a furnace body (2), and a plurality of furnace openings (21) formed on the furnace body (2) for the ends of reinforcing bars to extend into, characterized in that: A support platform (3) for supporting reinforcing bars is provided on the heating platform (1) at each furnace opening (21). A storage box (4) for storing multiple reinforcing bars is slidably connected on the heating platform (1) above the support platform (3). A feeding pipe (41) is provided at the lower end of the storage box (4). Two first guide pipes (411) are provided on one side of the lower end of the feeding pipe (41). A first clamping plate (412) for supporting the last reinforcing bar of the feeding pipe (41) is embedded in the first guide pipe (411). The lower end of the feeding pipe (41) is located at the far end of the furnace opening (21). Two second guide tubes (413) are provided on one side away from the first guide tube (411). A second clamping plate (414) for supporting the second-to-last reinforcing bar of the feed tube (41) is embedded in the second guide tube (413). A pull rod (4121) is provided between the ends of the two first clamping plates (412) away from the feed tube (41). A connecting rod (4141) is provided between the ends of the two second clamping plates (414) away from the feed tube (41). An L-shaped linkage arm (415) is provided between the ends of the pull rod (4121) and the connecting rod (4141).

2. The continuous feeding device for a bolt heating furnace according to claim 1, characterized in that: The storage box (4) is provided with guide shafts (5) extending in the horizontal direction on both sides. The storage box (4) is provided with movable hanging ears (42) on both sides for hanging on the guide shafts (5). The end of the guide shaft (5) is provided with a column (51) connected to the heating table (1).

3. The continuous feeding device for a bolt heating furnace according to claim 1, characterized in that: The bottom wall of the storage box (4) is inclined downward toward the side facing the feeding pipe (41).

4. The continuous feeding device for a bolt heating furnace according to claim 1, characterized in that: The cross-section of the support platform (3) is V-shaped.

5. The continuous feeding device for a bolt heating furnace according to claim 4, characterized in that: The end of the support platform (3) is integrally provided with an extension arm (31) for extending into the furnace opening (21).

6. The continuous feeding device for a bolt heating furnace according to claim 4, characterized in that: Telescopic columns (32) are provided at both ends of the lower surface of the support platform (3). A column sleeve (6) is provided on the heating platform (1) for the lower end of the telescopic column (32) to be inserted. An internal threaded sleeve (61) is provided on the upper end of the column sleeve (6). An adjusting bolt (62) for abutting against the outer wall of the telescopic column (32) is threaded on the internal threaded sleeve (61).

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