Bending auxiliary device suitable for industrial pure titanium medium plate

Abstract

The invention belongs to the technical field of machining, and particularly relates to a bending auxiliary device suitable for an industrial pure titanium medium-thickness plate. Comprising a workbench used for placing a to-be-heated workpiece; the heating module is composed of a heating base plate, a vertical position heating rod, a horizontal position heating rod, a heating controller and a heat preservation cotton plate; the temperature measurement module is composed of a ventilation protection cover, a fixing strip, a thermocouple and a temperature measurement display device; vent holes are formed in the cover shell walls of the left end and the right end of the ventilation protection cover and used for introducing argon into the cover shell in the heating process; a fixing strip is installed in the middle of the interior of the ventilation protection cover, a plurality of thermocouples which are linearly distributed at intervals are installed on the fixing strip, and the detection ends of the thermocouples make contact with the upper surface of a workpiece to be heated. According to the invention, the area near the bending line is effectively and accurately heated, and the device can be matched with various types of conventional bending equipment for use so as to realize the bending forming of a plate with the thickness of 4mm and above.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a bending auxiliary device suitable for industrial pure titanium medium and thick plates. Background Art

[0002] High-purity titanium has good plasticity, but as the impurity content increases, its strength increases and its ductility decreases. In other words, it becomes hard and brittle. For the same grade, as the plate thickness increases, its ductility gradually decreases. In addition, industrial pure titanium has no obvious yield point during cold deformation. Its yield strength is close to the tensile strength, and its yield strength is relatively high. For pure titanium plates with lower purity grades, especially medium and thick plates, there is a greater tendency to crack during cold deformation processing. In addition, titanium has a small elastic modulus, a large amount of springback during forming processing, and is difficult to form. For pure titanium thin plates, conventional bending equipment is used in daily life, which can basically form well, but when the plate thickness exceeds 3mm, large tear marks often appear on the extended surface of the plate.

[0003] In addition, there are few thick titanium profiles on the market. When there is a demand for such applications, they are either customized, which takes a long time and is costly, or welded, which makes it difficult to control deformation and greatly increases the difficulty of processing. There are also attempts to use flames to directly heat the area near the bending line before bending, but the heating temperature and range are difficult to control, especially when the bending line is long, it is even more difficult to ensure the synchronization of heating, and the entire construction process is completely exposed to the air, and an oxide layer is easily formed in the heated area, which has an adverse effect on the performance of the sheet.

[0004] Therefore, the present invention designs a bending auxiliary device suitable for pure titanium medium and thick plates to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a bending auxiliary device suitable for industrial pure titanium medium and thick plates, which utilizes the good forming properties of titanium alloy at temperature to effectively and accurately heat the area near the bending line. It can be used in conjunction with various types of conventional bending equipment to achieve bending forming of plates with a thickness of 4 mm and above.

[0006] In order to solve the above technical problems, the present invention provides a bending auxiliary device suitable for industrial pure titanium medium and thick plates to achieve bending forming of plates with a thickness of 4 mm or more; comprising:

[0007] A workbench is used to place the workpiece to be heated; a boss protruding upward is provided in the middle of the workbench, and a receiving groove is provided on the boss to receive and fix the heating module;

[0008] The heating module is composed of a heating pad, a vertical heating rod, a horizontal heating rod, a heating controller and a heat-insulating cotton board; the upper surface of the heating pad is a flat and smooth surface, which serves as a workpiece contact surface; the lower part of the heating pad is a corrugated structure, and vertical deep holes and horizontal deep holes are orderly arranged on the corrugated structure at intervals, and the vertical deep holes are used to insert the vertical heating rods, and the horizontal deep holes are staggered on the front and back sides of the corrugated structure for inserting the horizontal heating rods, so that the horizontal heating rods are staggered on the front and back sides, and the vertical heating rods and the horizontal heating rods are connected to the heating controller for controlling the start and stop of heating; the lower surface of the heating pad is covered with a cotton board heat-insulating layer;

[0009] The temperature measurement module is composed of a ventilation protection cover, a fixing bar, a thermocouple and a temperature measuring display; ventilation holes are opened on the cover walls at the left and right ends of the ventilation protection cover, which are used to introduce argon gas into the cover during the heating process; a fixing bar is installed on the middle part of the interior of the ventilation protection cover, and a plurality of the thermocouples arranged at linear intervals are installed on the fixing bar, the detection end of the thermocouple is in contact with the upper surface of the workpiece to be heated, and the other end of the thermocouple is connected to the temperature measuring display to realize real-time measurement and display of the temperature of the upper surface of the workpiece to be heated.

[0010] Preferably, the left and right ends of the boss further include U-shaped pads, the thickness of the U-shaped pads is the same as the thickness of the workpiece to be heated, and a passage for the workpiece to be heated to pass through is formed between the left and right U-shaped pads.

[0011] Preferably, a plurality of magnetic columns are arranged on the U-shaped pad, the top of the boss also includes a plurality of countersunk holes and a plurality of through holes are opened on the U-shaped pad, the through holes are used to plug in the magnetic columns, so that the lower end of the magnetic column is inserted into the countersunk hole and the upper end limits the bottom outer edge of the ventilation protective cover.

[0012] Preferably, the workbench on the front and rear sides of the boss also includes a number of rollers evenly arranged, which are used to quickly transfer the workpiece to be heated from the workbench to the processing area of ​​the bending equipment after heating.

[0013] Preferably, it further comprises a plurality of arc-shaped slots, in which limiting gaskets are installed for limiting the upper part of the rotating roller.

[0014] Preferably, the heating pad is made of copper, which can heat up quickly and conduct heat; the front and rear sides of the heating pad also include a number of fixing lugs arranged at intervals, which are used to lock and fix with the threaded holes opened on the accommodating groove.

[0015] Preferably, the fixing bar also includes a plurality of mounting holes, the upper portion of the mounting hole is a threaded hole, and the lower portion is a light hole whose aperture is larger than the outer diameter of the threaded hole, and the detection end of the thermocouple with an armored structure is screwed into the ventilation protective cover through the mounting hole until the end of the detection end contacts the upper plane of the workpiece to be heated.

[0016] Preferably, the workbench and the ventilation protection cover are both made of carbon steel, and the longitudinal width of the boss is adapted to the width of the workpiece to be heated.

[0017] Preferably, it also includes mechanical lifting support feet, which are respectively arranged at the four corners of the bottom of the workbench, and the workbench is adjusted to the corresponding height according to the height of the processing area of ​​the matching bending equipment.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention avoids the use of traditional welding or uneven flame heating for pure titanium medium and thick plate workpieces that need to be bent and formed, and can achieve synchronous and accurate heating of the center line of the to-be-bent position and the surrounding area to a suitable temperature, and then immediately push the workpiece into the processing area of ​​a matching conventional bending equipment, thereby reducing temperature loss during operation and shortening the time the warm state is exposed to the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a bending auxiliary device applicable to industrial pure titanium medium and thick plates provided by the present invention;

[0021] Figure 2 It is a structural schematic diagram of the main plate provided by the present invention.

[0022] Figure 3 It is a structural schematic diagram of the heating module provided by the present invention.

[0023] Figure 4 It is a structural schematic diagram of a heating pad.

[0024] Figure 5 It is a structural schematic diagram of the temperature measurement module provided by the present invention.

[0025] In the figure: 1-workbench, 11-main plate, 12-roller, 13-limiting gasket, 14-pad, 15-magnetic column, 2-heating module, 21-heating pad, 22-vertical position heating rod, 23-horizontal position heating rod, 24-heating controller, 25-insulation cotton board, 3-temperature measuring module, 31-ventilation protection cover, 32-fixing bar, 33-thermocouple, 34-temperature measuring indicator, 4-mechanical lifting support foot. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] like Figures 1 to 5 As shown, an embodiment of the present invention specifically provides a bending auxiliary device suitable for industrial pure titanium medium and thick plates, including a workbench 1, a heating module 2, a temperature measurement module 3, and a mechanical lifting support foot 4.

[0028] The main body of the workbench 1 is made of carbon steel and is used to place the workpiece to be heated. The longitudinal center is partially raised to form a boss. The lateral width of the boss is equivalent to the width of the workpiece to be heated. The inside of the boss is recessed and grooved. There are threaded holes on both sides of the groove for accommodating the fixed heating module 2. There are several countersunk holes on the plane of the boss. After the workpiece is put in place, the remaining two ends of the boss are leveled with pads of matching thickness. The magnetic column passes through the pad, and the bottom surface contacts the bottom surface of the countersunk hole on the boss, and the upper surface contacts the edge of the protective cover to prevent the ventilation protective cover 31 from shifting; the two side areas support the workpiece and are evenly distributed with several slots for accommodating rollers 12. The upper periphery of the rollers is limited by gaskets 13. The upper end of the roller 12 is flush with the plane on the boss, which reduces the contact between the non-heating area of ​​the workpiece and the workbench 1, and facilitates the rapid transfer of the workbench from the workbench to the matching bending equipment processing area after heating.

[0029] The heating module 2 is composed of a heating pad 21, a vertical heating rod 22, a horizontal heating rod 23, a heating controller 24 and a heat preservation cotton board 25. The heating pad 21 is made of copper, and is bolted to the inside of the boss of the workbench 1 through the corresponding countersunk holes on the side lug-shaped parts to reduce its contact range with the workbench 1. The upper surface is flat and smooth. After being installed in the workbench 1, it is flush with the boss surface and is the contact surface of the workpiece. The lower part is corrugated, with vertical deep holes and horizontal deep holes arranged in an orderly manner. The vertical deep holes are used to insert the vertical position heating rod 22, and the horizontal deep holes are arranged alternately on the left and right sides for inserting the horizontal position heating rod 23. All heating rods are connected to the heating controller 24. The exposed surface of the lower part of the heating pad 21 is applied with a heat preservation cotton board 25 to reduce heat loss.

[0030] The temperature measurement module 3 is composed of a ventilation protection cover 31, a fixing bar 32, a thermocouple 33 and a temperature measuring display 34. The ventilation protection cover 31 is a sheet metal cover made of carbon steel, with ventilation holes on both sides of the length direction, which are used to introduce argon gas into the cover during the heating process; the fixing bar 32 is welded and fixed to the longitudinal center line of its inner surface, and there are evenly distributed mounting holes on it. The upper part of the hole is a threaded structure, and the lower part is a light hole with an aperture larger than the outer diameter of the screw hole. The detection end of the armored thermocouple 33 is screwed into the cover through this mounting hole until the end contacts the upper plane of the workpiece. The other end of the thermocouple 33 is connected to the temperature measuring display 34, so as to realize real-time measurement and display of the temperature of the upper surface of the workpiece. Through real-time monitoring, the bending area of ​​the workpiece can be heated to a more accurate temperature range while considering the temperature loss during the workpiece transmission process.

[0031] The mechanical lifting support foot 4 can adjust the workbench to a corresponding height according to the height of the processing area of ​​the matching bending equipment.

[0032] In summary, the present invention avoids the use of traditional welding or uneven flame heating for pure titanium medium and thick plate workpieces that need to be bent and formed, and can achieve synchronous and accurate heating of the center line of the bending position and the surrounding area to an appropriate temperature, and then immediately push it into the processing area of ​​a matching conventional bending equipment, thereby reducing temperature loss during operation and shortening the time the warm state is exposed to the air.

[0033] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A bending auxiliary device suitable for industrial pure titanium medium and thick plates to achieve bending forming of plates with a thickness of 4 mm or more; characterized in that: include: A workbench is used to place the workpiece to be heated; a boss protruding upward is provided in the middle of the workbench, and a receiving groove is provided on the boss to receive and fix the heating module; The heating module is composed of a heating pad, a vertical heating rod, a horizontal heating rod, a heating controller and a heat-insulating cotton board; the upper surface of the heating pad is a flat and smooth surface, which serves as a workpiece contact surface; the lower part of the heating pad is a corrugated structure, and vertical deep holes and horizontal deep holes are orderly arranged on the corrugated structure at intervals, and the vertical deep holes are used to insert the vertical heating rods, and the horizontal deep holes are staggered on the front and back sides of the corrugated structure for inserting the horizontal heating rods, so that the horizontal heating rods are staggered on the front and back sides, and the vertical heating rods and the horizontal heating rods are connected to the heating controller for controlling the start and stop of heating; the lower surface of the heating pad is covered with a cotton board heat-insulating layer; The temperature measurement module is composed of a ventilation protection cover, a fixing bar, a thermocouple and a temperature measuring display; ventilation holes are opened on the cover walls at the left and right ends of the ventilation protection cover, which are used to introduce argon gas into the cover during the heating process; a fixing bar is installed on the middle part of the interior of the ventilation protection cover, and a plurality of the thermocouples arranged at linear intervals are installed on the fixing bar, the detection end of the thermocouple is in contact with the upper surface of the workpiece to be heated, and the other end of the thermocouple is connected to the temperature measuring display to realize real-time measurement and display of the temperature of the upper surface of the workpiece to be heated.

2. A bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 1, characterized in that: The left and right ends of the boss also include U-shaped pads, the thickness of the U-shaped pads is the same as the thickness of the workpiece to be heated, and a passage is formed between the left and right U-shaped pads for the workpiece to be heated to pass through.

3. A bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 2, characterized in that: A number of magnetic columns are arranged on the U-shaped pad strip, and the top of the boss also includes a number of countersunk holes and a number of through holes are opened on the U-shaped pad strip. The through holes are used to plug in the magnetic columns, so that the lower end of the magnetic column is inserted into the countersunk hole and the upper end limits the bottom outer edge of the ventilation protective cover.

4. The bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 1, characterized in that: The workbench on the front and rear sides of the boss also includes a number of rollers that are evenly arranged, which are used to quickly transfer the workpiece to be heated from the workbench to the processing area of ​​the bending equipment after heating.

5. A bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 4, characterized in that: It also includes a plurality of arc-shaped slots, in which limiting gaskets are installed for limiting the upper part of the rotating roller.

6. The bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 1, characterized in that: The heating pad is made of copper and can heat up quickly and conduct heat. The front and rear sides of the heating pad also include a number of fixed lugs arranged at intervals for locking and fixing with the threaded holes opened on the receiving groove.

7. The bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 1, characterized in that: The fixing bar also includes a plurality of mounting holes, the upper portion of the mounting hole is a threaded hole, and the lower portion is a light hole whose aperture is larger than the outer diameter of the threaded hole. The detection end of the thermocouple with an armored structure is screwed into the ventilation protective cover through the mounting hole until the end of the detection end contacts the upper plane of the workpiece to be heated.

8. The bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in claim 1, characterized in that: The workbench and the ventilation protection cover are both made of carbon steel, and the longitudinal width of the boss is adapted to the width of the workpiece to be heated.

9. A bending auxiliary device suitable for industrial pure titanium medium and thick plates as claimed in any one of claims 1 to 8, characterized in that: It also includes mechanical lifting support feet, which are respectively arranged at the four corners of the bottom of the workbench, and the workbench is adjusted to a corresponding height according to the height of the processing area of ​​the matching bending equipment.

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