Workpiece ejection structure for gas heating of a blank

Abstract

The utility model discloses a workpiece pop -out structure for blank gas heating specifically related to pop -out structure technical field, including two placing plate of being located at the rear side of furnace door, and the placing plate is located in the furnace body when heating, and the workpiece of being heated is placed at the top end of placing plate, the rear side of furnace door is equipped with fixed plate, two drive shafts are rotatably connected to the bottom of fixed plate, and the bottom of two drive shafts is connected at the front end of two placing plate respectively, the bottom fixed plate is equipped with end plate, and two end plates are fixedly arranged at the front end of two placing plate, and the outer end of two drive shafts is fixedly equipped with worm wheel, and the worm wheel between two worm wheels is equipped with worm. The utility model discloses through the elastic force of torsion spring drive drive shaft rotation, and drives two placing plate bifurcation, so that blank can automatically avoid the opening of furnace body after moving from the inside of furnace body, and then avoid the heat of gushing, reduce the influence of high temperature to personnel and equipment, can be more convenient to take down blank.

Description

Technical Field

[0001] This utility model relates to the field of ejector structure technology, specifically to an ejector structure for gas heating of blanks. Background Technology

[0002] A blank refers to a workpiece that has only undergone rough machining in the mechanical manufacturing process. To improve the various properties of the blank, it will undergo a series of processing steps, including heating. For example, in automobile production, to improve the strength of the blank, a special gas furnace is used to heat it. Only after the furnace temperature reaches the preset value and the holding time is sufficient can the furnace door be opened, the blank be removed, and transferred to a stamping machine for the next step of processing.

[0003] During the heating process, the furnace door is sealed, and the temperature inside the furnace reaches hundreds or even thousands of degrees Celsius. When removing the workpiece, the furnace door needs to be opened to remove it and move it to the next processing step. However, currently, when the furnace door is opened, the high-temperature gas inside the furnace rushes out rapidly, creating a significant hot airflow impact. On the one hand, the high-temperature airflow directly affects the operating area in front of the furnace door. If operators do not avoid it in time or are not adequately protected, it can easily cause burns to exposed areas such as the face and hands, posing a serious safety hazard. On the other hand, the blanks that have just been taken out of the furnace are directly facing the furnace door and are most affected by the high temperature inside the furnace, making it inconvenient to move the workpiece. Utility Model Content

[0004] The purpose of this utility model is to provide a workpiece ejection structure for gas-fired heating of billets, which enables the billet to automatically avoid the furnace opening after being removed from the furnace body, thereby avoiding the surging heat, reducing the impact of high temperature on personnel and equipment, and making it easier to remove the billet.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a workpiece ejection structure for gas heating of billets, installed on the furnace door on the front side of the furnace body, including two placement plates on the rear side of the furnace door. During heating, the placement plates are located in the furnace body, and the workpiece to be heated is placed on the top of the placement plates. A fixing plate is provided on the rear side of the furnace door. Two drive shafts are rotatably connected to the bottom end of the fixing plate. The bottom ends of the two drive shafts are respectively connected to the front ends of the two placement plates. An end plate is fixedly provided at the bottom end of the drive shaft, and the two end plates are respectively fixedly provided at the front ends of the two placement plates.

[0006] Two drive shafts are each fixedly equipped with a worm gear at their outer ends. A worm is provided between the two worm gears. The worm meshes with the two worm gears. An extension shaft is fixedly provided at the front end of the worm. The extension shaft is rotatably connected to the furnace door. A torsion spring is provided at the outer end of the extension shaft. An annular protrusion is fixedly provided at the rear end of the torsion spring. The annular protrusion is fixedly provided at the outer end of the extension shaft. The front end of the torsion spring is connected to the furnace door.

[0007] Furthermore, the top of the furnace door is provided with two connecting plates, the rear ends of which are slidably connected to the top of the furnace body.

[0008] Furthermore, a protective railing is fixedly provided at the top of the placement plate, and a roller is rotatably connected to the bottom of the protective railing. When the placement plate is inside the furnace body, the roller contacts the inner wall of the furnace body.

[0009] Furthermore, the front end of the extension shaft extends to the front side of the furnace door and is fixedly provided with a connecting seat. A slot with a square cross-section is opened at the center of the front end of the connecting seat, and a ceramic heat insulation sleeve is fixedly provided at the outer end of the connecting seat.

[0010] Furthermore, a detachable baffle is provided on the front side of the furnace door, and a through-hole is provided on the baffle, which is located directly in front of the connecting seat.

[0011] Furthermore, a movable plate is provided on the front side of the shield, and two sliding rods are provided on the movable plate. The rear end of the sliding rods is connected to the furnace door, and the movable plate can slide back and forth along the sliding rods.

[0012] Furthermore, a handwheel is provided on the front side of the movable plate. The axle of the handwheel passes through the movable plate and is fixedly provided with a plug. The axle is rotatably connected to the movable plate. The plug is located directly in front of the connecting seat and matches the slot on the connecting seat.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This invention uses the elastic force of a torsion spring to drive the drive shaft to rotate, thereby automatically separating the placement plate after it is pulled out of the furnace body. This allows the billet to move from the position directly facing the furnace opening to the side of the opening. It can automatically avoid the heat surging out of the furnace without the need for an additional power source, which reduces the threat of high temperature to personnel safety and the damage to surrounding equipment, while also providing convenience for the subsequent removal of the billet. It takes into account safety, energy saving and ease of operation. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the furnace door in the closed state according to this utility model;

[0016] Figure 2 This is a rear view structural diagram of the present invention;

[0017] Figure 3 This is the main view of the present invention.

[0018] Figure 4 This is a structural diagram of the worm gear and worm wheel connection of this utility model;

[0019] Figure 5 This is a structural diagram of the worm gear of this utility model;

[0020] Figure 6 This is a structural diagram of the movable plate of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Furnace body; 2. Furnace door; 201. Connecting plate; 202. Fixing plate; 3. Baffle plate; 4. Handwheel; 5. Moving plate; 501. Connector; 502. Slide rod; 6. Placement plate; 601. Guardrail; 602. Drive shaft; 603. Worm gear; 7. Worm; 8. Extension shaft; 801. Torsion spring; 9. Connecting seat; 10. Ceramic heat insulation sleeve. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figures 1-6 The workpiece ejection structure for gas heating of billets shown is installed on the furnace door 2 on the front side of the furnace body 1. It includes two placement plates 6 on the rear side of the furnace door 2. The top of the furnace door 2 is provided with two connecting plates 201. The rear end of the connecting plates 201 is slidably connected to the top of the furnace body 1. During heating, the placement plates 6 are located in the furnace body 1.

[0025] The workpiece to be heated is placed on the top of the placement plate 6. A protective railing 601 is fixedly provided on the top of the placement plate 6. A roller is rotatably connected to the bottom of the protective railing 601. When the placement plate 6 is inside the furnace body 1, the roller contacts the inner wall of the furnace body 1.

[0026] The billet to be heated is placed on top of the placement plate 6. During heating, the furnace door 2 is closed, and both the billet and the placement plate 6 are inside the furnace body 1. The billet is heated inside the furnace body 1. After heating is completed, the furnace door 2 is pulled forward, and the connecting plate 201 slides at the top of the furnace body 1. The placement plate 6 connected to the back of the furnace door 2 moves forward as the furnace door 2 is pulled. During the forward movement, the rollers roll on the inner wall of the furnace body 1 to prevent the placement plate 6 from sliding and rubbing against the inner wall of the furnace body 1. After the placement plate 6 is completely pulled out of the furnace body 1, the two placement plates 6 are separated by elastic force, thereby ejecting the billet. The guardrail 601 plays a protective role to prevent the billet from being thrown off during the separation of the placement plates 6.

[0027] After the heated workpiece is removed, the two placement plates 6 automatically pop out and separate to the sides, as... Figures 2-4As shown, a fixing plate 202 is provided on the rear side of the furnace door 2. Two drive shafts 602 are rotatably connected to the bottom end of the fixing plate 202. The rotation of the drive shafts 602 is damped, so that when the spring force of the torsion spring 801 drives the drive shafts 602 to rotate, the drive shafts 602 can rotate slowly, so as to avoid the placement plates 6 spreading out too fast and affecting the blanks. The bottom ends of the two drive shafts 602 are respectively connected to the front ends of the two placement plates 6. The bottom ends of the drive shafts 602 are fixedly provided with end plates, and the two end plates are respectively fixedly provided at the front ends of the two placement plates 6.

[0028] Two drive shafts 602 are each fixedly provided with a worm gear 603 at their outer ends. A worm 7 is provided between the two worm gears 603. The worm 7 meshes with the two worm gears 603. An extension shaft 8 is fixedly provided at the front end of the worm 7. The extension shaft 8 is rotatably connected to the furnace door 2. A torsion spring 801 is provided at the outer end of the extension shaft 8. An annular protrusion is fixedly provided at the rear end of the torsion spring 801. The annular protrusion is fixedly provided at the outer end of the extension shaft 8. The front end of the torsion spring 801 is connected to the furnace door 2.

[0029] Inside the furnace body 1, the two placement plates 6 are joined together, and the torsion spring 801 is in a tightened state. The placement plates 6 are blocked by the inner wall of the furnace body 1. When the placement plates 6 are pulled out from inside the furnace body 1, the placement plates 6 are unrestrained, the elastic force of the torsion spring 801 is released, and the extension shaft 8 and the worm gear 7 are driven to rotate. After the worm gear 7 rotates, it drives the worm wheel 603 and the drive shaft 602 to rotate. The rotation of the drive shaft 602 drives the placement plates 6 to rotate, so that the two placement plates 6 are separated. After they are separated, the position of the placement plates 6 and the blanks on the placement plates 6 changes. From the original position facing the opening of the furnace body 1, they move to the side of the opening of the furnace body 1. In this way, the heat surging out of the furnace body 1 can be avoided, reducing the impact of high temperature on personnel and equipment, so that the blanks can be removed from the placement plates 6.

[0030] To drive the worm gear 7 to rotate, such as Figure 4 , Figure 5 As shown, the front end of the extension shaft 8 extends to the front side of the furnace door 2 and is fixedly provided with a connecting seat 9. A slot with a square cross-section is opened at the center of the front end of the connecting seat 9, and a ceramic heat insulation sleeve 10 is fixedly provided at the outer end of the connecting seat 9.

[0031] A detachable baffle plate 3 is provided on the front side of the furnace door 2. The baffle plate 3 has a through-hole that passes through it. The through-hole is located directly in front of the connecting seat 9. The baffle plate 3 blocks the front of the connecting seat 9 and acts as a barrier to prevent the connecting seat 9 and the ceramic heat insulation sleeve 10 from coming into contact with the human body and causing burns. The ceramic heat insulation sleeve 10 also acts as a heat insulation to reduce the heat dissipation of the connecting seat 9.

[0032] After the heated blank is removed, a new blank to be heated needs to be placed on the placement plate 6. After placement, the connecting seat 9 needs to be rotated, which in turn drives the extension shaft 8 to rotate in the opposite direction. The torsion spring 801 is tightened again. After the extension shaft 8 rotates in the opposite direction, it drives the worm gear 603 and the drive shaft 602 to rotate, which causes the originally separated placement plates 6 to merge again. Then, the furnace door 2 is pushed to move backward, so that the placement plate 6 is pushed back into the furnace body 1 until the furnace door 2 completely closes the opening of the furnace body 1, thereby heating the blank to be heated.

[0033] To drive the two placement plates 6 to close together, as follows Figure 3 , Figure 5 and Figure 6 As shown, a movable plate 5 is provided on the front side of the shielding plate 3. Two sliding rods 502 are provided on the movable plate 5, and the rear end of the sliding rods 502 is connected to the furnace door 2. The movable plate 5 can slide back and forth along the sliding rods 502.

[0034] The movable plate 5 is provided with a handwheel 4 on its front side. The axle of the handwheel 4 passes through the movable plate 5 and is fixedly provided with a connector 501. The axle is rotatably connected to the movable plate 5. The connector 501 is located in front of the connecting seat 9 and matches the slot on the connecting seat 9.

[0035] To drive the connecting seat 9 to rotate, the moving plate 5 is pushed backward, causing it to slide backward along the slide rod 502. The plug 501 then moves backward. After adjusting the angle of the plug 501, it can be inserted into the slot of the connecting seat 9. Then, turning the handwheel 4 will drive the plug 501 and drive the connecting seat 9 to rotate, thereby causing the placement plate 6 to merge. After the placement plate 6 enters the furnace body 1, the moving plate 5 is moved forward, causing the plug 501 to separate from the connecting seat 9. This driving method can avoid direct contact between the human body and the connecting seat 9 to prevent burns while driving the connecting seat 9 to rotate. The plug 501 only contacts the connecting seat 9 for a short time and is not greatly affected by the high temperature. During the backward movement, the plug 501 needs to pass through the through hole on the baffle plate 3 to be inserted into the slot on the connecting seat 9.

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A workpiece ejection structure for gas-fired heating of billets, installed on the furnace door (2) on the front side of the furnace body (1), comprising two placement plates (6) disposed on the rear side of the furnace door (2), characterized in that: The furnace door (2) is provided with a fixing plate (202) on the rear side. The bottom end of the fixing plate (202) is rotatably connected to two drive shafts (602). The bottom ends of the two drive shafts (602) are respectively connected to the front ends of the two placement plates (6). Two drive shafts (602) are each fixedly provided with a worm gear (603) at their outer ends. A worm (7) is provided between the two worm gears (603). The worm (7) meshes with the two worm gears (603). An extension shaft (8) is fixedly provided at the front end of the worm (7). The extension shaft (8) is rotatably connected to the furnace door (2). A torsion spring (801) is provided at the outer end of the extension shaft (8).

2. The workpiece ejection structure for gas heating of blanks according to claim 1, characterized in that: The furnace door (2) is provided with two connecting plates (201) at the top, and the rear end of the connecting plates (201) is slidably connected to the top of the furnace body (1).

3. The workpiece ejection structure for gas heating of blanks according to claim 1, characterized in that: The top of the placement plate (6) is fixedly provided with a guardrail (601), and the bottom of the guardrail (601) is rotatably connected with a roller.

4. The workpiece ejection structure for gas heating of blanks according to claim 1, characterized in that: The front end of the extension shaft (8) extends to the front side of the furnace door (2) and is fixedly provided with a connecting seat (9). A slot with a square cross-section is opened at the center of the front end of the connecting seat (9), and a ceramic heat insulation sleeve (10) is fixedly provided at the outer end of the connecting seat (9).

5. The workpiece ejection structure for gas heating of blanks according to claim 4, characterized in that: The furnace door (2) is provided with a shield (3) on the front side, and the shield (3) has a through opening.

6. The workpiece ejection structure for gas heating of a blank according to claim 5, characterized in that: The front side of the shield (3) is provided with a movable plate (5), and the movable plate (5) is provided with two sliding rods (502) that pass through the movable plate (5). The rear end of the sliding rods (502) is connected to the furnace door (2).

7. The workpiece ejection structure for gas heating of a blank according to claim 6, characterized in that: The movable plate (5) is provided with a handwheel (4) on the front side. The axle of the handwheel (4) passes through the movable plate (5) and is fixedly provided with a connector (501).

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