Bending method for insulating glass spacer bar, and heating device therefor

Abstract

The present invention relates to the technical field of insulating glass manufacturing. Disclosed are a bending method for an insulating glass spacer bar, and a heating device therefor. The bending method for an insulating glass spacer bar comprises: passing an electric current through a corresponding area of an insulating glass spacer bar that needs to be bent, so as to heat said area; and after passing the electric current through the area for heating, bending the area of the insulating glass spacer bar. The present application can solve the problem of an insulating glass spacer bar being prone to defects such as wrinkles, tears, dents, and depressions at a bending position during bending, and can also solve the problem of the insulating glass spacer bar distorting easily during bending and having a bent surface that is prone to deformation, making the bent insulating glass spacer bar unable to lie flat in the same plane.

Description

Bending method and heating device for insulating glass spacer

[0001] Related applications

[0002] The present invention claims priority of the Chinese invention patent with patent application number 202310982906.7 and invention name “Bending method of insulating glass spacer and heating device thereof”. Technical Field

[0003] The present invention relates to the technical field of insulating glass manufacturing, and in particular to a bending method for insulating glass spacer strips and a heating device thereof. Background Art

[0004] Most of the existing insulating glass spacer bending mechanisms are used to bend insulating glass spacers made of aluminum. Some mechanisms can also be used to bend warm edge, composite, and stainless steel spacers. When simply bending insulating glass spacers made of materials with poor toughness, such as insulating glass spacers made of stainless steel, the wall thickness at the minimum bending point needs to be greater than or equal to about 0.16mm. Even so, the forming is unstable after bending, and there are defects such as wrinkles, tears, dents, and depressions at the bending point after bending. It is difficult to completely avoid the above defects, and there are relatively few perfect bent products. The entire existing technology cannot effectively and stably perform bending.

[0005] Once a bend is defective, it can cause air leakage during the first coat of butyl sealant sealing of the insulating glass due to surface defects in the spacer strips. This can completely render the molecular sieve inside the insulating glass spacers ineffective, resulting in significant quality issues. Furthermore, due to the poor plasticity and tensile properties of many spacer strips, such as stainless steel, the bending machine typically adjusts the over-bending angle of the spacer strips to stabilize them at 90° or other angles. This sometimes requires a backbend, which is inefficient and requires a very high clamping force on the spacer strips during bending. This places extremely high demands on the stability of the bending machine. During bending, the insulating glass spacers are prone to distortion and deformation, resulting in the spacers being unable to lie flat after bending. If the bent area is squeezed, expands, deforms, and widens, the dimensions will not meet subsequent use standards and cannot be used normally, resulting in a high loss rate.

[0006] Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a bending method and a heating device for an insulating glass spacer, which can solve the problem that the insulating glass spacer is prone to wrinkles, tears, dents, depressions and other defects at the bending point when bending. At the same time, it can also solve the problem that the insulating glass spacer is easily twisted when bending and the bending surface is easily deformed, resulting in the insulating glass spacer after bending being unable to be flattened in the same plane.

[0008] In order to achieve the above-mentioned purpose, the technical solutions adopted by the present invention are specifically as follows:

[0009] A method for bending a hollow glass spacer, the method comprising:

[0010] The area where the insulating glass spacer needs to be bent is electrified to heat the area;

[0011] After the region is electrically heated, the region of the insulating glass spacer is bent.

[0012] A heating device for insulating glass spacers used in any of the above-mentioned methods for bending insulating glass spacers, the heating device for insulating glass spacers comprising:

[0013] Electrode mounting bracket unit;

[0014] A first electrode member and a second electrode member are provided on the electrode mounting bracket unit, wherein the first electrode member has a first interference portion, the second electrode member has a second interference portion, and a preset distance is provided between the first interference portion and the second interference portion;

[0015] a telescopic unit connected to the electrode mounting bracket unit, the telescopic unit being capable of driving the electrode mounting bracket unit to move along a first preset direction, or the telescopic unit being capable of supporting or clamping the insulating glass spacer to drive the insulating glass spacer to move along the first preset direction; under the action of the telescopic unit, the first interference portion and the second interference portion being capable of contacting a first surface or a surface of the same side of the two side surfaces of the insulating glass spacer;

[0016] The electric output unit has a first output end electrically connected to the first electrode member and a second output end electrically connected to the second electrode member.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The bending method of the insulating glass spacer in the present application can be applied to the bending of various insulating glass spacers. The area corresponding to the insulating glass spacer that needs to be bent is energized so that the area is preheated. This can improve the plasticity and tensile properties of the insulating glass spacer at the bend. After that, the insulating glass spacer is bent, which is conducive to the stable bending and forming of the insulating glass spacer. During the entire bending process, the bending part is not prone to cracking, tearing, wrinkling on both sides, dents, depressions and other defects, which can improve the molding quality of the insulating glass spacer bending and effectively increase the percentage of perfect bent products. In this way, the possibility of the insulating glass spacer leaking due to surface defects can be greatly reduced, and the possibility of the molecular sieve inside the insulating glass spacer failing can be reduced. In addition, during the entire bending process, the insulating glass spacer is not easy to twist and the bending surface is not easy to deform. In this way, the insulating glass spacer after bending can be flattened in the same plane, meeting the subsequent use standards and can be used normally. Finally, the use of electric heating is faster and more convenient, which can make production more efficient, and the entire process has low energy consumption, energy saving, environmental protection, stability and reliability.

[0019] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a flowchart of the steps of a bending method for insulating glass spacers according to a first embodiment of the present invention;

[0021] FIG2 is a flowchart of the steps of a second embodiment of a method for bending insulating glass spacers according to an embodiment of the present invention;

[0022] FIG3 is a schematic diagram of a hollow glass spacer when electrically heated according to an embodiment of the present invention;

[0023] FIG4 is a schematic diagram of the insulating glass spacer before being bent in cooperation with the first bending tool and the second bending tool in an embodiment of the present invention;

[0024] FIG5 is a schematic diagram of an insulating glass spacer bent to 90 degrees in an embodiment of the present invention;

[0025] FIG6 is a schematic structural diagram of a heating device for insulating glass spacers according to an embodiment of the present invention.

[0026] The figure marks of the above drawings are: 1. insulating glass spacer; 11. first surface; 12. second surface; 13. side; 2. first electrode member; 3. second electrode member; 4. area; 5. first bending tool; 51. interference end; 6. second bending tool; 61. first rotating member; 62. second rotating member; 7. electrode mounting bracket unit; 71. mounting rod; 72. first electrode fixing member; 73. second electrode fixing member; 74. first insulating gasket; 75. second insulating gasket; 76. pre-pressing roller; 8. telescopic unit; 9. electric output unit; 91. first wire; 92. second wire; 93. first wire pressing nose; 94. second wire pressing nose; 95. first wire pressing guide; 96. second wire pressing guide; 97. first fastener; 98. second fastener. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention object, the specific implementation methods, structures, features and effects of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments:

[0028] In order to solve the problem that the insulating glass spacer is prone to wrinkles, tears, dents, depressions and other defects when bending, and to solve the problem that the insulating glass spacer is easily twisted when bending and the bending surface is easily deformed, resulting in the insulating glass spacer being unable to lie flat in the same plane after bending, a bending method for insulating glass spacer is proposed in the present application. FIG1 is a flowchart of the steps of the bending method for insulating glass spacer in an embodiment of the present invention. As shown in FIG1 , the bending method for insulating glass spacer may include the following steps:

[0029] S101 : energizing the area 4 of the insulating glass spacer 1 corresponding to the area to be bent, so as to heat the area 4 .

[0030] In this step, Figure 3 is a schematic diagram of the insulating glass spacer when it is electrically heated in an embodiment of the present invention. As shown in Figure 3, the area 4 corresponding to the insulating glass spacer 1 that needs to be bent can be energized to preheat the area 4, and then the insulating glass spacer 1 can be bent. This can improve the plasticity and tensile properties of the bending part of the insulating glass spacer 1, which is conducive to the stable bending and forming of the insulating glass spacer 1. At the same time, the use of electrical heating is faster and more convenient, which can make production more efficient.

[0031] The above steps may specifically include the following steps:

[0032] S201: Place the first electrode member 2 and the second electrode member 3 in contact with the first surface 11 or one of the two side surfaces of the insulating glass spacer 1. The insulating glass spacer 1 has a first extension direction. In the first extension direction, the first electrode member 2 and the second electrode member 3 are located on either side of the region 4. The first surface 11 is the side of the insulating glass spacer 1 that faces outward when bent. The side surface 13 is the side of the insulating glass spacer 1 that is in close contact with the glass.

[0033] In this step, as shown in Figure 3, the insulating glass spacer 1 can be placed horizontally, with the first surface 11 of the insulating glass spacer facing upward and the second surface 12 of the insulating glass spacer facing downward; or one side surface 13 of the insulating glass spacer facing upward. The bottoms of the first electrode member 2 and the second electrode member 3 are simultaneously in contact with the surface of the first surface 11 or the surface of the upward side surface 13 of the insulating glass spacer 1. The first electrode member 2 and the second electrode member 3 are respectively located on both sides of the region 4 in the horizontal direction. They can be completely outside the two sides of the region 4, or they can be located near the two sides of the region 4. As shown in Figure 2, the region with a length of X in the horizontal direction is the above-mentioned region 4. The distance of the length X of the region 4 can be adjusted according to the size and radius of the bending angle of the insulating glass spacer 1. As feasible, the distance of the length X of the region 4 can cover the bending part required for complete heating as much as possible.

[0034] S202 : After the first electrode member 2 and the second electrode member 3 contact the first surface 11 or the side surface 13 of the insulating glass spacer 1 , energize the first electrode member 2 and the second electrode member 3 to heat the region 4 .

[0035] In this step, after the first electrode member 2 and the second electrode member 3 contact the first surface 11 or the side surface 13 of the insulating glass spacer 1, the first electrode member 2 and the second electrode member 3 are energized. Since the insulating glass spacer 1 itself has resistance, the area 4 will be heated after energization.

[0036] Alternatively, direct current or alternating current may be supplied to the first electrode member 2 and the second electrode member 3 to heat the region 4. Furthermore, to ensure safety during the heating process and avoid danger to operators, the voltage supplied to the first electrode member 2 and the second electrode member 3 is generally no higher than 36V. In practical applications, any voltage other than 36V may be used.

[0037] As a feasible method, the duration of energizing the first electrode member 2 and the second electrode member 3 is generally controlled to be between 0.2 seconds and 3 seconds. This can achieve both efficiency and avoid partial discoloration of the insulating glass spacer 1 due to instantaneous high-power heating, which would affect the appearance.

[0038] As a feasible approach, when the first electrode member 2 and the second electrode member 3 are energized to heat the area, a protective gas may be introduced around the area of ​​the insulating glass spacer to prevent localized oxidation of the area of ​​the insulating glass spacer, which could affect the service life of the insulating glass spacer. The protective gas may be an inert gas, such as argon, or another type of gas capable of preventing oxidation of the area of ​​the insulating glass spacer, such as nitrogen.

[0039] When the insulating glass spacer 1 is electrically heated by using the first electrode member 2 and the second electrode member 3, the first electrode member 2 and the second electrode member 3 can be in contact with the surface of the first side 11 or the surface of the same side 13 of the two side surfaces of the insulating glass spacer 1. In this way, when power is turned on, the current of the first side 11 or the side 13 is larger than that of other places. In this way, at the place where bending is required, the temperature of the surface of the first side 11 or the side 13 rises more, especially higher than the temperature of the second side 12, thereby ensuring as much as possible that the material of the second side 12 of the insulating glass spacer 1 does not change color, and does not affect the aesthetics of the insulating glass spacer 1 after being bent and installed in the insulating glass.

[0040] As a feasible method, when the first electrode member 2 and the second electrode member 3 are brought into contact with the first surface 11 of the insulating glass spacer 1, the width of the first electrode member 2 and the second electrode member 3 is less than the width of the first surface 11 of the insulating glass spacer 1. The above method can prevent the two side surfaces 13 of the insulating glass spacer 1 that play a sealing role from being excessively oxidized when heated by electricity due to being too close to the first electrode member 2 or the second electrode member 3, thereby affecting the sealing effect. Furthermore, the width of the first electrode member 2 and the second electrode member 3 is less than or equal to 95% of the width of the first surface 11 of the insulating glass spacer 1. Furthermore, when the first electrode member 2 and the second electrode member 3 are brought into contact with the first surface 11 of the insulating glass spacer 1, the first electrode member 2 and the second electrode member 3 are located as close as possible to the middle of the first surface 11 of the insulating glass spacer 1 in the width direction.

[0041] Similarly, when the first electrode member 2 and the second electrode member 3 are brought into contact with the surface of the same side surface 13 of the two side surfaces of the insulating glass spacer 1, the widths of the first electrode member 2 and the second electrode member 3 are less than the width of the surface of the side surface 13 of the insulating glass spacer 1. Furthermore, when the first electrode member 2 and the second electrode member 3 are brought into contact with the surface of the same side surface 13 of the insulating glass spacer 1, the widths of the first electrode member 2 and the second electrode member 3 are less than or equal to 95% of the width of the surface of the side surface 13 of the insulating glass spacer 1. Furthermore, when the first electrode member 2 and the second electrode member 3 are brought into contact with the surface of the same side surface 13 of the two side surfaces of the insulating glass spacer 1, the first electrode member 2 and the second electrode member 3 are positioned as close as possible to the middle of the surface of the side surface 13 of the insulating glass spacer 1 in the width direction.

[0042] S103: After the region 4 is electrically heated, the region 4 of the insulating glass spacer 1 is bent.

[0043] In this step, after the region 4 is electrically heated, the region 4 of the insulating glass spacer strip 1 that needs to be bent is at the heated temperature. At this time, FIG4 is a schematic diagram of the insulating glass spacer strip in accordance with an embodiment of the present invention cooperating with the first bending tool and the second bending tool before bending. As shown in FIG4 , the abutting end 51 of the first bending tool 5 can be used to contact the second surface 12 of the insulating glass spacer strip 1, and the center of the region 4 corresponding to the insulating glass spacer strip 1 that needs to be bent is aligned with the center offset distance Y of the abutting end 51 of the first bending tool 5 and the rotation center of the second bending tool 6, so that the two are on the same vertical line in the horizontal direction. The second bending tool 6 includes a first rotating member 61 and a second rotating member 62 that are hinged to each other, and the center of the hinge is the rotation center of the second bending tool 6.

[0044] The first and second rotating members 61 and 62 of the second bending tool 6 are simultaneously placed horizontally on the first surface 11 of the insulating glass spacer 1. The second rotating member 62 of the second bending tool 6 is then rotated clockwise by a certain angle, thereby bending region 4 of the insulating glass spacer 1. For example, FIG5 is a schematic diagram of an insulating glass spacer after being bent 90 degrees in an embodiment of the present invention. As shown in FIG5 , the second rotating member 62 of the second bending tool 6 can be rotated 90 degrees clockwise, thereby bending the insulating glass spacer 1 90 degrees. After the entire insulating glass spacer 1 is bent multiple times, a rectangular spacer frame can be formed.

[0045] The bending mechanism comprising the first bending fixture 5 and the second bending fixture 6 requires greater bending force than conventional bending mechanisms, placing higher demands on the friction material and causing relatively severe wear. The electrical heating method reduces the bending force and effectively increases the service life of the friction material.

[0046] In the above embodiment, the region 4 of the insulating glass spacer 1 that needs to be bent can be bent while the region 4 is electrically heated.

[0047] In other feasible embodiments, the region of the insulating glass spacer strip that needs to be bent can be heated by electrical heating before the region is bent. FIG2 is a flow chart of the steps of the bending method of the insulating glass spacer strip in the second embodiment of the present invention. As shown in FIG2 , the bending method of the insulating glass spacer strip can include:

[0048] S102: After a preset condition is met, power supply to area 4 is stopped.

[0049] This step may be performed after step S101 and before step S103.

[0050] Correspondingly, the step of bending the region 4 of the insulating glass spacer 1 after electrically heating the region 4 includes: bending the region 4 of the insulating glass spacer 1 after stopping electrically heating the region 4 .

[0051] In this step, the preset condition may be the time of power-on heating or the temperature at which the insulating glass spacer 1 is heated.

[0052] Specifically, when the insulating glass spacer 1 is made of stainless steel, the preset condition may be that the heated temperature of the insulating glass spacer 1 is greater than or equal to 150 degrees Celsius. Furthermore, the heated temperature of the insulating glass spacer 1 is unlikely to be too high. For example, when the insulating glass spacer is made of 201 stainless steel, the heated temperature of the insulating glass spacer is unlikely to exceed 650 degrees Celsius; when the insulating glass spacer is made of 304 stainless steel, the heated temperature of the insulating glass spacer is unlikely to exceed 1400 degrees Celsius. For another example, when the insulating glass spacer is a warm edge spacer, the heated temperature of the insulating glass spacer is unlikely to exceed 300 degrees Celsius.

[0053] In other feasible embodiments, since the time of power-on heating is very short, it is not easy to control the power-on and power-off of the first electrode member 2 and the second electrode member 3 according to the temperature of the area 4 corresponding to the insulating glass spacer 1 that needs to be bent. Therefore, it is preferred to first adjust the power of the power output unit to control the time of power-on heating, and stop energizing the area 4 when the power-on time is reached. The power-on time can be determined in advance according to actual conditions. According to the different materials of the insulating glass spacer 1, different heating temperatures, and different sizes of the corresponding areas 4 that need to be bent, the power-on time needs to be adjusted in advance to the appropriate parameters. Although the parameter directly controlled when heating the insulating glass spacer 1 is time, the determination of this time is also based on the temperature to which different insulating glass spacer 1 materials need to be heated. Therefore, it also has a certain indirect relationship with the temperature to which the insulating glass spacer 1 needs to be heated.

[0054] To achieve the above-mentioned purpose, namely, heating the region 4 of the insulating glass spacer 1 corresponding to the required bending to a corresponding appropriate temperature, when the first electrode member 2 and the second electrode member 3 are energized, the power input to the first electrode member 2 and the second electrode member 3 can be adjusted according to the duration of the energization, so that the region 4 is heated to the desired temperature of the insulating glass spacer 1 at the time of energization or at the end of the energization period. For example, the desired temperature of the insulating glass spacer 1 can be the desired temperature of the insulating glass spacer 1 material. Therefore, the preset condition can be the duration of the energization of the first electrode member 2 and the second electrode member 3.

[0055] To efficiently and quickly heat the bend of an insulating glass spacer, this application proposes a heating device for insulating glass spacers. Figure 6 is a schematic structural diagram of the heating device for insulating glass spacers according to an embodiment of the present invention. As shown in Figure 6, the heating device for insulating glass spacers may include: an electrode mounting bracket unit 7; a first electrode member 2 and a second electrode member 3 disposed on the electrode mounting bracket unit 7; a telescopic unit 8; and an electrical output unit 9. This heating device for insulating glass spacers is suitable for heating metal insulating glass spacers.

[0056] As shown in FIG6 , the first electrode member 2 has a first contact portion 21, and the second electrode member 3 has a second contact portion 31. A preset distance exists between the first contact portion 21 and the second contact portion 31. The first contact portion 21 and the second contact portion 31 are used to contact the surface of the first side 11 or the surface of the same side 13 of the two side surfaces 13 of the hollow glass spacer. As a feasible method, the preset distance can be roughly equal to the length of the corresponding area 4 of the hollow glass spacer 1 that needs to be bent, or slightly less than the length of the corresponding area 4 of the hollow glass spacer 1 that needs to be bent, so that the heating device of the hollow glass spacer can achieve the effect of saving energy when heating the hollow glass spacer 1. Of course, the preset distance can also be greater than the length of the corresponding area 4 of the hollow glass spacer 1 that needs to be bent.

[0057] As shown in Figure 6, in a feasible embodiment, the telescopic unit 8 is connected to the electrode mounting bracket unit 7, and the telescopic unit 8 can drive the electrode mounting bracket unit 7 to move along the first preset direction. In another feasible embodiment, the telescopic unit 8 can support or clamp the insulating glass spacer to drive the insulating glass spacer 1 to move along the first preset direction. In the above two methods, one is to drive the electrode mounting bracket unit 7 to move toward the insulating glass spacer, and the other is to drive the insulating glass spacer to move toward the electrode mounting bracket unit 7. Under the action of the telescopic unit 8, the first resistance part 21 and the second resistance part 31 can contact the surface of the first side 11 of the insulating glass spacer 1 or the surface of the same side 13 of the two side surfaces 13. The telescopic unit 8 can have a variety of different structures. For example, the telescopic unit 8 can include a slide groove and a motor with gears. The electrode mounting bracket unit 7 can be installed in the slide groove, and can move along the first preset direction in the slide groove. The electrode mounting bracket unit 7 has a rack portion, and the gear of the motor cooperates with the rack portion. When the motor rotates forward or reverse, the electrode mounting bracket unit 7 can be driven to move along the first preset direction in the slide groove, so that the first contact portion 21 and the second contact portion 31 can contact the surface of the first side 11 of the insulating glass spacer 1 or the surface of the same side 13 of the two side surfaces 13.

[0058] As shown in FIG6 , the electrical output unit 9 has a first output end electrically connected to the first electrode member 2 and a second output end electrically connected to the second electrode member 3. The electrical output unit 9 can transmit electricity to the first and second electrode members 2 and 3 as needed, thereby causing the first and second electrode members 2 and 3 to heat the insulating glass spacer 1 between the first and second contact portions 21 and 31. The heating primarily heats the first surface 11 or the same of the two side surfaces 13 of the insulating glass spacer 1 where the first and second contact portions 21 and 31 contact. Alternatively, the electrical output unit 9 can output alternating current or direct current.

[0059] As shown in Figure 6, the electrode mounting bracket unit 7 includes: a mounting rod 71 extending along a first preset direction; a first electrode fixing member 72 and a second electrode fixing member 73 connected to the mounting rod 71; the first electrode member 2 is mounted on the first electrode fixing member 72, and the second electrode member 3 is mounted on the second electrode fixing member 73, and the first electrode member 2 and the first electrode fixing member 72 are insulated from each other, and the second electrode member 3 and the second electrode fixing member 73 are insulated from each other.

[0060] As shown in FIG6 , the electrode mounting bracket unit 7 may include: a mounting rod 71 extending along a first preset direction; a first electrode fixing member 72 and a second electrode fixing member 73 connected to the mounting rod 71; the first electrode member 2 mounted on the first electrode fixing member 72, the second electrode member 3 mounted on the second electrode fixing member 73, the first electrode member 2 and the first electrode fixing member 72 being insulated from each other, and the second electrode member 3 and the second electrode fixing member 73 being insulated from each other. The first preset direction may be toward the insulating glass spacer 1 or away from the insulating glass spacer 1. This method can achieve insulated installation between the first electrode member 2, the second electrode member 3, and the electrode mounting bracket unit 7, preventing current from being transferred to the electrode mounting bracket unit 7 when the first electrode member 2 and the second electrode member 3 are energized.

[0061] Specifically, in a feasible embodiment, as shown in FIG6 , a first insulating gasket 74 is provided between the first electrode member 2 and the first electrode fixing member 72 , and a second insulating gasket 75 is provided between the second electrode member 3 and the second electrode fixing member 73 .

[0062] Furthermore, as shown in Figure 6, the first electrode fixing member 72 and the second electrode fixing member 73 can be fixedly arranged on both sides of the mounting rod 71. The first electrode fixing member 72 and the second electrode fixing member 73 are L-shaped, with the vertical portions of the first electrode fixing member 72 and the second electrode fixing member 73 fixedly connected to the mounting rod 71; the lower end surfaces of the horizontal portions of the first electrode fixing member 72 and the second electrode fixing member 73 are respectively connected to the first electrode member 2 and the second electrode member 3. This structure can facilitate the formation of an accommodation space between the first electrode member 2 and the second electrode member 3. The electrode fixing member can be fixed to the mounting rod 71 by welding, screw connection, or other methods, which are not limited in this application.

[0063] As a feasible approach, as shown in FIG6 , the heating device for the insulating glass spacer may include: a first wire 91 and a second wire 92. The first output end is connected to one end of the first wire 91, the other end of the first wire 91 is connected to a first wire pressing nose 93, the first wire pressing nose 93 is connected to a first wire pressing guide 95, and the first wire pressing guide 95 is fixed to the first electrode member 2 via a first fastener 97. The second output end is connected to one end of the second wire 92, the other end of the second wire 92 is connected to a second wire pressing nose 94, the second wire pressing nose 94 is connected to a second wire pressing guide 96, and the second wire pressing guide 96 is fixed to the second electrode member 3 via a second fastener 98. This allows the first wire pressing guide 95 to be detachably connected to the first electrode member 2, facilitating replacement of the first electrode member 2; similarly, the second wire pressing guide 96 to be detachably connected to the second electrode member 3, facilitating replacement of the second electrode member 3. Furthermore, the above connection method allows the electrode members and the wires to be tightly connected, making it less likely to generate sparks and thus avoiding damage to the heating device for the insulating glass spacer.

[0064] 6 , the first wire pressing guide 95 and the second wire pressing guide 96 are connected to opposite sides of the first electrode member 2 and the second electrode member 3. This can reduce the possibility of the first wire 91 and the second wire 92 being entangled or interfering with each other.

[0065] As feasible, as shown in Figure 6, a pre-pressing roller 76 is installed at the lower end of the mounting rod 71 via a shaft. The pre-pressing roller 76 can rotate around the shaft.

[0066] Furthermore, when the electrode mounting bracket unit 7 moves toward the insulating glass spacer 1 along the first predetermined direction under the action of the telescopic unit 8, the pre-pressing roller 76 contacts the surface of the first side 11 or the surface of the same of the two side surfaces 13 of the insulating glass spacer 1 before the first and second abutting portions 21 and 31. Furthermore, the center of the pre-pressing roller 76 is located in the middle of the first and second abutting portions 21 and 31.

[0067] The pre-stressing roller 76 serves to position the insulating glass spacer 1. The contact point between the pre-stressing roller 76 and the insulating glass spacer 1 is the center portion of the insulating glass spacer 1 where the bend is to be performed. If the contact point between the pre-stressing roller 76 and the insulating glass spacer 1 is not the center portion of the insulating glass spacer 1 where the bend is to be performed, the position of the insulating glass spacer 1 will need to be adjusted. In this case, the pre-stressing roller 76 can roll directly on the surface of the insulating glass spacer 1 without hindering the position adjustment of the insulating glass spacer 1.

[0068] In order to prevent the current from being transmitted to the mounting rod 71 when the first electrode member 2 and the second electrode member 3 are energized, the contact point between the pre-pressing roller 76 and the insulating glass spacer 1 can be made of insulating material. Of course, the entire pre-pressing roller 76 can be made of insulating material.

[0069] In order to make the pre-pressing roller 76 contact the surface of the first side 11 or the surface of the same side 13 of the two side surfaces 13 of the insulating glass spacer 1 before the first contact portion 21 and the second contact portion 31, and then the first contact portion 21 and the second contact portion 31 can both contact the surface of the first side 11 or the surface of the same side 13 of the two side surfaces 13 of the insulating glass spacer 1, it is feasible that the lower end of the mounting rod 71 can have a structure that can retract upward a small distance after being subjected to an upward force, so that after the pre-pressing roller 76 contacts the surface of the first side 11 or the surface of the same side 13 of the two side surfaces 13 of the insulating glass spacer 1, it retracts upward a small distance, so that the first contact portion 21 and the second contact portion 31 can both contact the surface of the first side 11 or the surface of the same side 13 of the two side surfaces 13 of the insulating glass spacer 1. When the cam 72 is in the closed position, the locking cam 72 is in the closed position, and the cam 72 is in the closed position, so that the cam 72 is in the closed position and the locking cam 72 is in the closed position.

[0070] The bending method of the insulating glass spacer in the present application can be applied to the bending of various insulating glass spacers 1. By energizing the corresponding area 4 of the insulating glass spacer 1 to be bent, the area 4 is preheated. This improves the plasticity and tensile properties of the bend of the insulating glass spacer 1. The insulating glass spacer 1 is then bent, which is conducive to the stable bending and forming of the insulating glass spacer 1. During the entire bending process, the bent area is less likely to crack, tear, have wrinkles on both sides, have dents, or depressions, which can improve the bending quality of the insulating glass spacer 1 and effectively increase the percentage of perfect bent products. In this way, the possibility of insulating glass leakage caused by surface defects in the insulating glass spacer 1 can be greatly reduced, and the possibility of molecular sieve failure inside the insulating glass spacer 1 can be reduced. In addition, during the entire bending process, the insulating glass spacer 1 is not easily twisted, and the bending surface is not easily deformed. Therefore, after being bent, the insulating glass spacer 1 can be flattened and can be in the same plane, meeting the subsequent use standards and can be used normally. Finally, the use of electric heating is faster and more convenient, which can make production more efficient, and the entire process has low energy consumption, energy saving, environmental protection, stability and reliability.

[0071] The bending method of the insulating glass spacer in the present application is particularly suitable for insulating glass spacers with a wall thickness of less than or equal to 0.16 mm. Due to the extremely thin wall thickness, this type of insulating glass spacer is particularly prone to cracking, tearing, wrinkles on both sides, dents, depressions and other defects when bending. The bending method of the insulating glass spacer of the present invention can particularly improve the molding quality of the above-mentioned insulating glass spacer when bending, and greatly reduce the manufacturing cost of this type of insulating glass spacer when bending.

[0072] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A method for bending a hollow glass spacer, wherein: The bending method of the insulating glass spacer comprises: The area corresponding to the insulating glass spacer strip that needs to be bent is energized to heat the area; After the region is electrically heated, the region of the insulating glass spacer is bent.

2. The method for bending insulating glass spacers according to claim 1, wherein: The bending method of the insulating glass spacer also includes: After the preset conditions are met, power supply to the area is stopped; The step of bending the region of the insulating glass spacer after electrically heating the region comprises: bending the region of the insulating glass spacer after electrically heating the region stops.

3. The method for bending insulating glass spacers according to claim 2, wherein: The insulating glass spacer is made of stainless steel, and the preset condition is that the heating temperature of the insulating glass spacer is greater than or equal to 150 degrees Celsius.

4. The method for bending insulating glass spacers according to claim 1, wherein: The wall thickness of the insulating glass spacer strip is less than or equal to 0.16 mm.

5. The method for bending insulating glass spacers according to claim 1, wherein: The step of energizing the area corresponding to the insulating glass spacer strip that needs to be bent to heat the area includes: The first electrode member and the second electrode member are contacted with the first surface or the same surface of the two side surfaces of the insulating glass spacer, the insulating glass spacer has a first extension direction, and in the first extension direction, the first electrode member and the second electrode member are respectively located on both sides of the region; the first surface is the side of the insulating glass spacer facing outward when the insulating glass spacer is bent, and the side surface is the side of the insulating glass spacer used to be in close contact with the glass; After the first electrode member and the second electrode member contact the first surface or the side surface of the insulating glass spacer, the first electrode member and the second electrode member are energized to heat the area.

6. The method for bending insulating glass spacers according to claim 5, wherein: Direct current or alternating current is supplied to the first electrode member and the second electrode member to heat the region.

7. The method for bending insulating glass spacers according to claim 5, wherein: The time for energizing the first electrode member and the second electrode member is between 0.2 seconds and 3 seconds.

8. The method for bending insulating glass spacers according to claim 5, wherein: When the first electrode member and the second electrode member are energized, the power input to the first electrode member and the second electrode member is adjusted according to the energization time, so that the area is heated to the temperature to which the insulating glass spacer strip needs to be heated when the power is turned on.

9. The method for bending insulating glass spacers according to claim 2, wherein: The step of energizing the area corresponding to the insulating glass spacer strip that needs to be bent to heat the area includes: contacting the first electrode member and the second electrode member with the first surface or the same surface of the two side surfaces of the insulating glass spacer strip; The preset condition is the time for the first electrode member and the second electrode member to be energized when the temperature required for the insulating glass spacer to be smoothly bent is reached.

10. The method for bending insulating glass spacers according to claim 5, wherein: When the first electrode member and the second electrode member are brought into contact with the first surface of the insulating glass spacer, the widths of the first electrode member and the second electrode member are smaller than the width of the first surface of the insulating glass spacer; When the first electrode member and the second electrode member contact the surface of the same side surface of the two side surfaces of the insulating glass spacer, the widths of the first electrode member and the second electrode member are smaller than the widths of the side surfaces of the insulating glass spacer.

11. The method for bending insulating glass spacers according to claim 10, wherein: When the first electrode member and the second electrode member are in contact with the first surface of the insulating glass spacer, the width of the first electrode member and the second electrode member is less than or equal to 95% of the width of the first surface of the insulating glass spacer; When the first electrode member and the second electrode member contact the surface of the same side of the insulating glass spacer, the width of the first electrode member and the second electrode member is less than or equal to 95% of the width of the side surface of the insulating glass spacer.

12. The method for bending insulating glass spacers according to claim 1, wherein: The step of energizing the area corresponding to the insulating glass spacer strip that needs to be bent to heat the area includes: When the area is heated, a protective gas is introduced around the area to prevent the insulating glass spacer from being oxidized.

13. A heating device for insulating glass spacers used in the method for bending insulating glass spacers as claimed in any one of claims 1 to 12, wherein: The heating device for the insulating glass spacer comprises: Electrode mounting bracket unit; A first electrode member and a second electrode member are arranged on the electrode mounting bracket unit, wherein the first electrode member has a first contact portion, the second electrode member has a second contact portion, and a preset distance exists between the first contact portion and the second contact portion; A telescopic unit, wherein the telescopic unit is connected to the electrode mounting bracket unit, and the telescopic unit can drive the electrode mounting bracket unit to move along a first preset direction, or the telescopic unit can support or clamp the insulating glass spacer to drive the insulating glass spacer to move along the first preset direction; under the action of the telescopic unit, the first abutment portion and the second abutment portion can contact the first surface or the same surface of the two side surfaces of the insulating glass spacer; The electric output unit has a first output end electrically connected to the first electrode member and a second output end electrically connected to the second electrode member.

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