A liquid-cooled adjustable-width hydraulic clamping welding heating platform

Abstract

The present invention discloses a liquid-cooled adjustable-width hydraulic clamping welding heating platform, which comprises a platform support frame. A hydraulic valve system is installed on the platform support frame. A hydraulic station is arranged on one side of the platform support frame, and a water chiller is arranged on one side of the hydraulic station. A support heating mechanism is arranged on the platform support frame, and a steel plate fixing mechanism is arranged on the platform support frame. A cooling mechanism is arranged on the support heating mechanism and the steel plate fixing mechanism. The beneficial effects of the present invention are as follows: it can adapt to welds of different lengths, prevent the steel plate from moving, improve the welding effect, perform heat preservation during the welding process and after welding, the heating temperature is uniform and accurate, it can support a single copper heating plate, facilitate the replacement of damaged heating rods and thermocouples therein, prevent metal deformation during the welding process, prevent deformation due to high temperature during the welding process, can work continuously for a long time, and improve the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of metal welding, and more specifically, to a liquid-cooled adjustable-width hydraulic clamping welding heating platform. Background Art

[0002] Some metal materials need to be preheated before welding, kept warm during the welding process, and kept warm after welding. Currently, the more common methods are to use flame heating and ceramic infrared heating blankets for heating metal materials. However, the temperature and uniformity of flame heating are not precise, and the assembly and fixation of the heating blanket are not very convenient. Some special heating equipment has the situation of being dedicated to a specific machine, with poor versatility, unable to be adjusted, and not applicable to straight welds with different lengths and thicknesses.

[0003] It should be noted that the above content belongs to the technical cognition scope of the inventor and does not necessarily constitute the prior art. Summary of the Invention

[0004] In view of the above defects, the present invention provides a liquid-cooled adjustable-width hydraulic clamping welding heating platform to solve the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A liquid-cooled adjustable-width hydraulic clamping welding heating platform includes a platform support frame, on which a hydraulic valve system is installed. On one side of the platform support frame, there is a hydraulic station, and on one side of the hydraulic station, there is a water chiller. On the platform support frame, there is a support heating mechanism, and on the platform support frame, there is a steel plate fixing mechanism. A cooling mechanism is provided on the support heating mechanism and the steel plate fixing mechanism;

[0007] The support heating mechanism includes a bottom support plate arranged on the platform support frame. A left support beam is installed on the left side of the bottom support plate, and a right support beam is installed on the right side of the bottom support plate. An insulating plate is provided on the bottom support plate, and four copper heating plates are provided on the insulating plate. Opposite threaded holes are provided on the bottom support plate and the insulating plate, respectively located below the four copper heating plates. Bolts are threadedly connected to the threaded holes, and heating rods and thermocouples are installed in the copper heating plates;

[0008] The steel plate fixing mechanism includes a fixing part, a moving part, and a connecting part. The fixing part includes two oil cylinder fixing seats, a clamping plate oil cylinder, an upper left clamping plate, and an upper right clamping plate.

[0009] Further, the moving part includes an oil cylinder slide seat arranged on one side of the left support beam and the right support beam. A lower connecting plate is installed on the oil cylinder slide seat, and the lower connecting plate is slidably connected to the left support beam and the right support beam respectively. An upper connecting plate is installed on the oil cylinder slide seat, and the upper connecting plate is slidably connected to the left support beam and the right support beam respectively. A pressing oil cylinder is installed on the oil cylinder slide seat. A left upper clamping plate support is installed on the piston rod of the left pressing oil cylinder, and a right upper clamping plate support is installed on the piston rod of the right pressing oil cylinder. A left support plate is installed on one side of the left oil cylinder slide seat, and a right support plate is installed on one side of the right pressing oil cylinder.

[0010] Further, the connecting part includes a left dovetail groove opened on the surface of the left upper clamping plate. A left slider is installed at the bottom of the left upper clamping plate support, and the left slider is located in the left dovetail groove and is slidably connected to the left dovetail groove. A right dovetail groove is opened on the surface of the right upper clamping plate. A right slider is installed at the bottom of the right upper clamping plate support, and the right slider is located in the right dovetail groove and is slidably connected to the right dovetail groove.

[0011] Further, the temperature reduction mechanism includes cooling water channels arranged inside the bottom support plate, the left support beam, the right support beam, the left upper clamping plate, and the right upper clamping plate. A water inlet pipe is connected to one side of the left upper clamping plate. A connecting hose is connected between the left upper clamping plate and the right upper clamping plate. A water outlet pipe is connected to the right upper clamping plate. A water inlet hard pipe is installed on one side of the left support beam. A first hard connecting pipe is connected between the left support beam and the bottom support plate. A second hard connecting pipe is connected between the bottom support plate and the right support beam. A return water hard pipe is connected to the right support beam.

[0012] Further, guide sliding rails are provided on the left support beam and the right support beam. Sliders are installed on the left support plate and the right support plate, and the sliders are slidably connected to the guide sliding rails.

[0013] Further, a temperature sensor is installed inside the copper heating plate.

[0014] Further, wear-resistant heat insulation plates are installed on the left support plate and the right support plate.

[0015] Further, a number of heating rods and thermocouples are evenly distributed inside the copper heating plate, and the heating rods can be controlled in groups.

[0016] Further, the copper heating plate, the left support plate, the right support plate, the left support beam, and the right support beam are on the same horizontal plane, and the two clamping plate oil cylinders and the two pressing oil cylinders operate synchronously.

[0017] The beneficial effects of the present invention are as follows: The moving part can slide on the bottom support plate, can adjust its position, and adapt to welds of different lengths. The welded steel plates are fixed by the steel plate fixing mechanism to prevent the steel plates from moving, improving the welding effect.

[0018] The welding metal is heated by a support heating mechanism, heat preservation is carried out during the welding process and after welding, the heating temperature is uniform and accurate, preventing the metal from deforming during welding. The single copper heating plate can be supported by bolts, facilitating the replacement of damaged heating rods and thermocouples;

[0019] The bottom support plate, left support beam, right support beam, upper left clamping plate, and upper right clamping plate can be cooled by a cooling mechanism, preventing deformation due to high temperature during welding, enabling continuous operation for a long time, and improving the service life. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a liquid-cooled adjustable-width hydraulic clamping welding heating platform according to the present invention;

[0021] Figure 2 is a top view of the steel plate fixing mechanism;

[0022] Figure 3 is a side view of the fixing part;

[0023] Figure 4 is a side view of the moving part;

[0024] Figure 5 is a cross-sectional view of the copper heating plate;

[0025] Figure 6 is a top view of the support heating mechanism;

[0026] Figure 7 is a schematic diagram of the internal cooling water path of the bottom support plate;

[0027] Figure 8 is a top view of the left support plate;

[0028] In the figure, 1, platform support frame; 2, hydraulic valve system; 3, hydraulic station; 4, water chiller; 5, bottom support plate; 6, left support beam; 7, right support beam; 8, heat insulation board; 9, copper heating plate; 10, threaded hole; 11, bolt; 12, heating rod; 13, thermocouple; 14, fixing part; 15, moving part; 17, oil cylinder fixing seat; 18, clamping plate oil cylinder; 19, upper left clamping plate; 20, upper right clamping plate; 21, oil cylinder sliding seat; 22, lower connecting plate; 23, upper connecting plate; 24, pressing oil cylinder; 25, upper left clamping plate support; 26, upper right clamping plate support; 27, left support plate; 28, right support plate; 29, left dovetail groove; 30, left slider; 31, right dovetail groove; 32, right slider; 33, cooling water path; 34, water inlet pipeline; 35, connecting hose; 36, water outlet pipeline; 37, water inlet hard pipe; 38, hard connecting pipe 1; 39, hard connecting pipe 2; 40, return water hard pipe; 41, guiding slide rail; 42, slider; 43, temperature sensor; 44, wear-resistant heat insulation board. Detailed Description of the Invention

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] The embodiment of the present application provides a liquid-cooled adjustable-width hydraulic clamping welding heating platform. Please refer to Figures 1-8 : It includes a platform support frame 1, on which a hydraulic valve system 2 is installed. On one side of the platform support frame 1, there is a hydraulic station 3. On one side of the hydraulic station 3, there is a water chiller 4. The platform support frame 1 is provided with a support heating mechanism, a steel plate fixing mechanism, and a cooling mechanism is provided on the support heating mechanism and the steel plate fixing mechanism;

[0031] The support heating mechanism includes a bottom support plate 5 arranged on the platform support frame 1. A left support beam 6 is installed on the left side of the bottom support plate 5, and a right support beam 7 is installed on the right side of the bottom support plate 5. An insulating plate 8 is provided on the bottom support plate 5. Four copper heating plates 9 are provided on the insulating plate 8. Opposite threaded holes 10 are provided on the bottom support plate 5 and the insulating plate 8, and the threaded holes 10 are respectively located below the four copper heating plates 9. Bolts 11 are threadedly connected to the threaded holes 10. A heating rod 12 and a thermocouple 13 are installed in the copper heating plate 9;

[0032] The steel plate fixing mechanism includes a fixing part 14, a moving part 15, and a connecting part. The fixing part 14 includes two oil cylinder fixing seats 17, a clamping plate oil cylinder 18, an upper left clamping plate 19, and an upper right clamping plate 20.

[0033] Specifically in actual applications, the two clamping cylinders 18 of the fixed part 14, the two pressing cylinders 24 of the moving part 15, and the cooling water are led out from a whole hydraulic valve system 2 to a hydraulic station 3 and a water chiller 4. Two direction control valves are installed on the hydraulic valve system 2 to respectively control the pressing down and lifting of the left and right upper clamping plates, and complete the operations of loading and unloading the plates during the welding process. This belongs to the prior art, so no detailed description will be given. Before the metal to be welded is fixed, the steel plate fixing mechanism starts to work. The steel plate fixing mechanism drives the left upper clamping plate 19 and the right upper clamping plate 20 to move upward, places a metal plate to be welded on the left support plate 27, pushes the welding metal towards the copper heating plate 9, pushes the welding metal onto the copper heating plate 9, places another welding metal plate on the right support plate 28, pushes the welding metal towards the copper heating plate 9, and pushes the welding metal onto the copper heating plate 9. The two metals to be welded come into contact with each other and are clamped and fixed by the steel plate fixing mechanism. The copper heating plate 9 starts to work, and the copper heating plate 9 heats the metal to be welded. After the temperature reaches the set value, it enters the heat preservation state. The heating temperature is uniform and accurate, preventing the metal from deforming during the welding process. When the heating rods 12 and thermocouples 13 in the copper heating plate 9 are damaged and need to be replaced, the operator rotates the bolt 11. The bolt 11 rotates and moves in the threaded hole 10, and the copper heating plate 9 can be supported by the bolt 11, facilitating the replacement of the damaged heating rods 12 and thermocouples 13 therein.

[0034] Refer to the attached drawings of the specification Figure 1 , the attached drawings of the specification Figure 2 and the attached drawings of the specification Figure 4 , the moving part 15 includes an oil cylinder slide 21 arranged on one side of the left support beam 6 and the right support beam 7. A lower connecting plate 22 is installed on the oil cylinder slide 21. The lower connecting plate 22 is respectively slidably connected to the left support beam 6 and the right support beam 7. An upper connecting plate 23 is installed on the oil cylinder slide 21. The upper connecting plate 23 is respectively slidably connected to the left support beam 6 and the right support beam 7. A pressing cylinder 24 is installed on the oil cylinder slide 21. An upper left clamping plate support 25 is installed on the piston rod of the left pressing cylinder 24, and an upper right clamping plate support 26 is installed on the piston rod of the right pressing cylinder 24. A left support plate 27 is installed on one side of the left oil cylinder slide 21, and a right support plate 28 is installed on one side of the right pressing cylinder 24.

[0035] Specifically in actual applications, the moving part 15 is installed on the left support beam 6 and the right support beam 7 through the lower connecting plate 22 and the upper connecting plate 23, playing a role of sliding support. The left support plate 27 and the right support plate 28 follow the moving part 15 and slide on the left support beam 6 and the right support beam 7, and support the welding metal through the left support plate 27 and the right support plate 28. The sliding of the left support plate 27 and the right support plate 28 can meet the requirements of different weld lengths.

[0036] Refer to the attached drawings of the specification Figure 2 , the attached drawings of the specification Figure 3and the appended description Figure 4 The connecting part includes a left dovetail groove 29 formed on the surface of the upper left clamping plate 19. A left slider 30 is installed at the bottom of the upper left clamping plate support 25. The left slider 30 is located in the left dovetail groove 29 and is slidably connected to the left dovetail groove 29. A right dovetail groove 31 is formed on the surface of the upper right clamping plate 20. A right slider 32 is installed at the bottom of the upper right clamping plate support 26. The right slider 32 is located in the right dovetail groove 31 and is slidably connected to the right dovetail groove 31.

[0037] Specifically, in actual application, one end of the upper left clamping plate 19 and the upper right clamping plate 20 is fixed to the fixing part 14, and the other end is floating. The left slider 30 is slidably connected to the left dovetail groove 29, and the right slider 32 is slidably connected to the right dovetail groove 31. The other end is connected to the moving part 15, and the moving part 15 slides to adapt to welds of different lengths.

[0038] Refer to the appended description Figure 1 and the appended description Figure 2 and the appended description Figure 6 and the appended description Figure 7 The temperature reduction mechanism includes cooling water channels 33 arranged inside the bottom support plate 5, the left support beam 6, the right support beam 7, the upper left clamping plate 19, and the upper right clamping plate 20. A water inlet pipe 34 is connected to one side of the upper left clamping plate 19. A connecting flexible hose 35 is connected between the upper left clamping plate 19 and the upper right clamping plate 20. A water outlet pipe 36 is connected to the upper right clamping plate 20. A water inlet hard pipe 37 is installed on one side of the left support beam 6. A first hard connecting pipe 38 is connected between the left support beam 6 and the bottom support plate 5. A second hard connecting pipe 39 is connected between the bottom support plate 5 and the right support beam 7. A return water hard pipe 40 is connected to the right support beam 7.

[0039] Specifically, in actual application, the water cooler 4 is provided with two cooling water channels. One of the cooling water passes through the hydraulic valve system 2 and is connected to the water inlet pipe 34 through a hose and enters the upper left clamping plate 19. After circulating and cooling inside the upper left clamping plate 19, it enters the upper right clamping plate 20 through the connecting flexible hose 35. After circulating and cooling inside the upper right clamping plate 20, it flows through the water outlet pipe 36 through a hose into the hydraulic valve system 2 and then back to the water cooler 4. The other cooling water channel passes through the hydraulic valve system 2 and enters the left support beam 6 through the water inlet hard pipe 37. After circulating and cooling inside the left support beam 6, it enters the bottom support plate 5 through the first hard connecting pipe 38. After circulating and cooling inside the bottom support plate 5, it enters the right support beam 7 through the second hard connecting pipe 39. After circulating and cooling inside the right support beam 7, it is connected back to the hydraulic valve system 2 through the return water hard pipe 40, and the bottom support plate 5, the left support beam 6, the right support beam 7, the upper left clamping plate 19, and the upper right clamping plate 20 are cooled to prevent deformation due to high temperature during the welding process, enabling continuous operation for a long time and improving the service life.

[0040] Refer to the appended description Figure 6 and the appended description Figure 8, guide rails 41 are provided on the left support beam 6 and the right support beam 7, and sliders 42 are installed on the left support plate 27 and the right support plate 28. The sliders 42 are slidably connected to the guide rails 41.

[0041] Specifically in actual applications, when the left support plate 27 and the right support plate 28 slide, they drive the sliders 42 to slide along the guide rails 41, and the sliders 42 and the guide rails 41 play a role in guiding and limiting.

[0042] Refer to the attached Figure 5 , a temperature sensor 43 is installed in the copper heating plate 9.

[0043] Specifically in actual applications, the temperature of the copper heating plate 9 is measured by the temperature sensor 43, and after the temperature reaches the set value, it enters the heat preservation state.

[0044] Refer to the attached Figure 8 , wear-resistant heat insulation plates 44 are installed on the left support plate 27 and the right support plate 28.

[0045] Specifically in actual applications, wear-resistant heat insulation plates 44 are provided between the left support plate 27 and the right support plate 28 and the welded metal, playing a role in heat insulation.

[0046] Refer to the attached Figure 5 , a number of heating rods 12 and thermocouples 13 are evenly distributed in the copper heating plate 9, and the heating rods 12 can be grouped and controlled.

[0047] Specifically in actual applications, the heating rods 12 are grouped and controlled, and are logically connected to the position relationship of the moving part 15, and only heat the length space between the fixed part 14 and the moving part 15.

[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0049] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0054] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

Claims

1. A liquid-cooled adjustable-width hydraulic clamping welding heating platform, comprising a platform support frame (1), a hydraulic valve system (2) is installed on the platform support frame (1), a hydraulic station (3) is provided on one side of the platform support frame (1), and a water chiller (4) is provided on one side of the hydraulic station (3), characterized in that, A support heating mechanism is provided on the platform support frame (1), a steel plate fixing mechanism is provided on the platform support frame (1), and a cooling mechanism is provided on the support heating mechanism and the steel plate fixing mechanism; The support heating mechanism includes a bottom support plate (5) arranged on the platform support frame (1), a left support beam (6) is installed on the left side of the bottom support plate (5), a right support beam (7) is installed on the right side of the bottom support plate (5), a heat insulation plate (8) is provided on the bottom support plate (5), four copper heating plates (9) are provided on the heat insulation plate (8), opposite threaded holes (10) are provided on the bottom support plate (5) and the heat insulation plate (8), the threaded holes (10) are respectively located below the four copper heating plates (9), bolts (11) are threadedly connected to the threaded holes (10), and a heating rod (12) and a thermocouple (13) are installed in the copper heating plate (9); The steel plate fixing mechanism includes a fixing part (14), a moving part (15) and a connecting part. The fixing part (14) includes two oil cylinder fixing seats (17), a clamping plate oil cylinder (18), a left upper clamping plate (19) and a right upper clamping plate (20); The moving part (15) includes an oil cylinder sliding seat (21) arranged on one side of the left support beam (6) and the right support beam (7). A lower connecting plate (22) is installed on the oil cylinder sliding seat (21), the lower connecting plate (22) is respectively slidably connected to the left support beam (6) and the right support beam (7), an upper connecting plate (23) is installed on the oil cylinder sliding seat (21), the upper connecting plate (23) is respectively slidably connected to the left support beam (6) and the right support beam (7), a pressing oil cylinder (24) is installed on the oil cylinder sliding seat (21), a left upper clamping plate support (25) is installed on the piston rod of the left pressing oil cylinder (24), a right upper clamping plate support (26) is installed on the piston rod of the right pressing oil cylinder (24), a left support plate (27) is installed on one side of the left oil cylinder sliding seat (21), and a right support plate (28) is installed on one side of the right pressing oil cylinder (24); The connecting part includes a left dovetail groove (29) opened on the surface of the left upper clamping plate (19), a left slider (30) is installed at the bottom of the left upper clamping plate support (25), the left slider (30) is located in the left dovetail groove (29) and is slidably connected to the left dovetail groove (29), a right dovetail groove (31) is opened on the surface of the right upper clamping plate (20), a right slider (32) is installed at the bottom of the right upper clamping plate support (26), and the right slider (32) is located in the right dovetail groove (31) and is slidably connected to the right dovetail groove (31); Guide rails (41) are provided on the left support beam (6) and the right support beam (7), sliders (42) are installed on the left support plate (27) and the right support plate (28), and the sliders (42) are slidably connected to the guide rails (41); A number of groups of the heating rods (12) and the thermocouples (13) are evenly distributed in the copper heating plates (9), and the heating rods (12) can be grouped and controlled; the positional relationship between the heating rods (12) and the moving part (15) is logically connected, and only the length space between the fixing part (14) and the moving part (15) is heated; The copper heating plate (9), the left support plate (27), the right support plate (28), the left support beam (6), and the right support beam (7) are on the same horizontal plane.

2. The liquid-cooled adjustable-width hydraulic clamping welding heating platform according to claim 1, wherein, The temperature reduction mechanism includes cooling water channels (33) arranged inside the bottom support plate (5), the left support beam (6), the right support beam (7), the upper left clamping plate (19), and the upper right clamping plate (20). A water inlet pipe (34) is connected to one side of the upper left clamping plate (19). A connecting hose (35) is connected between the upper left clamping plate (19) and the upper right clamping plate (20). A water outlet pipe (36) is connected to the upper right clamping plate (20). A hard water inlet pipe (37) is installed on one side of the left support beam (6). A first hard connecting pipe (38) is connected between the left support beam (6) and the bottom support plate (5). A second hard connecting pipe (39) is connected between the bottom support plate (5) and the right support beam (7). A hard water return pipe (40) is connected to the right support beam (7).

3. The liquid-cooled adjustable-width hydraulic clamping welding heating platform according to claim 1, wherein A temperature sensor (43) is installed inside the copper heating plate (9).

4. The liquid-cooled adjustable-width hydraulic clamping welding heating platform according to claim 1, wherein Wear-resistant heat insulation plates (44) are installed on the left support plate (27) and the right support plate (28).

5. The liquid-cooled adjustable-width hydraulic clamping welding heating platform according to claim 1, wherein, The two clamping cylinders (18) and the two pressing cylinders (24) operate synchronously.

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