Welding equipment for machining pilot valve assembly

Abstract

The invention belongs to the technical field of pilot valve assembly welding, and discloses a welding device for pilot valve assembly machining, which comprises a machine base, a plurality of ring rotating devices are fixedly connected to the outer wall of the top end of the machine base, and a welding gun is rotatably connected in each ring rotating device in a surrounding manner; workpiece fixing parts are arranged on the two sides of each annular rotating device. By means of negative-pressure contraction of the rubber air bag and self-adaptive multi-point abutting of the ball pressing plate, double fixation of internal contraction and external pressing is formed, pilot valve assembly parts in different shapes are adapted, the situation that a rigid clamp damages the surface of a workpiece can be avoided, high stability in the welding process is achieved, deviation caused by vibration is reduced, the structure is simplified, and the cost is lower than that of a traditional mechanical clamp. The method is suitable for small and medium-sized enterprise production lines, reduces the equipment investment threshold, and improves the welding yield.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding of pilot valve assemblies, and specifically relates to a welding device for pilot valve assembly processing. BACKGROUND

[0002] A pilot valve is a component that realizes device control by adjusting fluid pressure or flow, and is widely used in the fields of industrial automation, automobile braking and hydraulic systems. In a semi-trailer automobile ABS system (data in 2012), the pilot valve realizes precise switching of the pressurization, pressure maintenance and pressure reduction processes by controlling the pressure change of a brake chamber, prevents wheel locking, and in a pilot type solenoid valve, it is responsible for regulating the opening and closing of the main valve as a core component. At present, in the prior art, when welding the valve body and valve seat in the pilot valve assembly, most small and medium-sized factories will use a clamp driven by a bidirectional threaded rod to fix the pilot valve assembly, and then directly use manual welding for welding. However, the fixing precision of the workpiece is not enough, and the pilot valve workpiece may be offset or shaken during welding, which is not conducive to the overall welding operation. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the embodiments of the present application is to provide a welding device for pilot valve assembly processing, which can solve the technical problem of the prior art that when welding the valve body and valve seat in the pilot valve assembly, most small and medium-sized factories will use a clamp driven by a bidirectional threaded rod to fix the pilot valve assembly, and then directly use manual welding for welding. However, the fixing precision of the workpiece is not enough, and the pilot valve workpiece may be offset or shaken during welding, which is not conducive to the overall welding operation.

[0004] The embodiments of the present application provide a welding device for pilot valve assembly processing, which comprises a machine base, a plurality of ring turning devices are fixedly connected to the top end outer wall of the machine base, a welding gun is rotatably connected around each ring turning device, and a workpiece fixing part is arranged on the two sides of each ring turning device. Each workpiece fixing part comprises a rubber air bag, one end of each rubber air bag is provided with a piston structure for different degrees of negative pressure deformation of the inner cavity of the rubber air bag, a plurality of L-shaped slide rods are fixedly connected around the rubber air bag, a pressing plate is fixedly connected to the bottom end rod body of each L-shaped slide rod, two ball pressing plates are movably connected to the bottom end plate body of each pressing plate, the bottom end of each group of ball pressing plates can be fixed at multiple points according to the shape of the pilot valve workpiece positioned by the rubber air bag, and a meshing transmission structure is jointly arranged on each group of L-shaped slide rods.

[0005] Preferably, the workpiece fixing part further comprises a vertical plate frame fixedly connected to the outer wall of the top end of the machine base, a semicircular support plate is fixedly connected to the outer wall of one end of the vertical plate frame, the inner wall of the semicircular support plate is fixedly connected to the outer wall of the bottom end of the rubber air bag, and a pressure sensor is fixedly connected to the inner wall of one end of the plate body of the vertical plate frame.

[0006] Preferably, the piston structure comprises a flow guide pipe fixedly connected to one end of the rubber air bag, a piston cylinder is fixedly connected to the other end of the flow guide pipe, and a piston rod is slidingly connected to the inner wall of the piston cylinder.

[0007] Preferably, a connecting plate is fixedly connected to the outer wall of one end of the piston cylinder, the plate body of the connecting plate is fixedly connected to the plate body of the vertical plate frame, and a horizontal plate is fixedly connected to the outer wall of the top end of the piston rod.

[0008] Preferably, a machine plate is fixedly connected to the side of the plate body of the vertical plate frame, and an electric cylinder is fixedly connected to the outer wall of the top end of the machine plate.

[0009] Preferably, the meshing transmission structure comprises a meshing assembly arranged on the movable end of the electric cylinder, the meshing assembly comprises a straight gear and a toothed plate meshingly connected to one end of the straight gear, and the toothed plate is further composed of a short rack and a long smooth plate.

[0010] Preferably, a U-shaped groove plate is fixedly connected to the plate body of the vertical plate frame and slidingly connected to the toothed plate, an elastic expansion piece is fixedly connected to the outer wall of one end of the U-shaped groove plate, the outer plate body of the elastic expansion piece is made of metal, the bottom end plate body of the toothed plate is fixedly connected to the top end of the movable end of the electric cylinder, a magnetic layer capable of magnetically attracting the elastic expansion piece is coated on the plate body of the toothed plate, and the top end plate body of the toothed plate is intermittently connected to the side plate body of the bottom end of the horizontal plate.

[0011] Preferably, a T-shaped shaft rod is movably sleeved on the straight gear, the rod body of the T-shaped shaft rod is fixedly connected to the plate body of the vertical plate frame, and one end of the rod body of the T-shaped shaft rod is fixedly connected to the pressure sensor.

[0012] Preferably, a plurality of inclined arc grooves are formed in the straight gear in a surrounding manner, and the inner wall of each inclined arc groove is slidingly connected to the corresponding L-shaped slide rod.

[0013] Preferably, a bent sleeve rod is slidingly connected to one section of the rod body of each L-shaped slide rod, and one end of the rod body of each bent sleeve rod is fixedly connected to the outer wall of one end of the vertical plate frame.

[0014] The technical scheme provided by the embodiment of the application has at least the following beneficial effects: In the embodiment of the present application, through the negative pressure shrinkage of the rubber air bag and the self-adaptive multi-point pressure of the ball pressure plate, the "internal shrinkage and external pressure" double fixation is formed, which is suitable for different shape of the pilot valve assembly parts, and can also avoid the damage of the rigid clamp to the workpiece surface, realizes the high stability of the welding process, reduces the deviation caused by vibration, simplifies the structure, and is lower in cost than the traditional mechanical clamp, is suitable for small and medium enterprise production line, reduces the equipment investment threshold, and improves the welding yield. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0017] Figure 2 It is a schematic diagram of the local structure of the workpiece fixing part of the present application.

[0018] Figure 3 It is a schematic diagram of the local plane structure of the workpiece fixing part of the present application.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the rubber air bag and the piston cylinder of the present application.

[0020] Figure 5 It is a schematic diagram of the local cross-sectional structure of the vertical plate frame and the engaging assembly of the present application.

[0021] Figure 6 It is a schematic diagram of the overall structure of the U-shaped groove plate of the present application.

[0022] Figure 7 It is a schematic diagram of the inclined arc groove structure of the present application.

[0023] Figure 8 It is a schematic diagram of the local enlarged structure at A of the present application. Figure 4

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1 - machine base; 101 - ring turning equipment; 102 - welding gun; 2 - workpiece fixing part; 201 - vertical plate frame; 202 - half-arc support plate; 203 - pressure sensor; 204 - rubber air bag; 205 - flow guide pipe; 206 - piston cylinder; 207 - piston rod; 208 - horizontal plate; 209 - machine plate; 210 - electric cylinder; 211 - engaging assembly; 212 - T-shaped shaft rod; 213 - U-shaped groove plate; 214 - inclined arc groove; 215 - L-shaped slide rod; 216 - bent sleeve rod; 217 - pressure plate; 218 - ball pressure plate. ​DETAILED DESCRIPTION

[0025] In order to better understand the technical solutions in the embodiments of the present application, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that these descriptions are only exemplary, and are not used to limit the scope of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should be within the scope of protection of the present application.

[0026] In addition, in the following description, the description of the well-known structures and techniques is omitted to avoid unnecessary confusion of the concepts disclosed in the present application.

[0027] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, the same numbers refer to the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application.

[0028] Reference is made to the accompanying drawings that form a part of this description Figures 1 to 8 The present application provides a welding device for processing a pilot valve assembly, comprising a machine base 1, a plurality of ring rotating devices 101 are fixedly connected to the top outer wall of the machine base 1, a welding gun 102 is rotatably connected around each ring rotating device 101, and a workpiece fixing part 2 is arranged at both sides of each ring rotating device 101; Each workpiece fixing part 2 comprises a rubber air bag 204, one end of each rubber air bag 204 is provided with a piston structure for different degrees of negative pressure deformation of the inner cavity of the rubber air bag 204, a plurality of L-shaped slide rods 215 are fixedly connected around the rubber air bag 204, a pressing plate 217 is fixedly connected to the bottom end of the rod body of each L-shaped slide rod 215, two ball pressing plates 218 are pivotally connected to the bottom end of each pressing plate 217, the bottom end of each group of ball pressing plates 218 can be fixed at multiple points according to the shape of the pilot valve workpiece positioned by the rubber air bag 204, and meshing transmission structures are jointly arranged on each group of L-shaped slide rods 215.

[0029] Adopt the above scheme: the straight gear in rotating state will make multiple L-shaped slide bars 215 slide in the corresponding inclined arc grooves 214, and the passive sliding process of each L-shaped slide bar 215 will generate a guiding effect through the corresponding bent sleeve rod 216, and in the process of passive rotation of the straight gear driving multiple L-shaped slide bars 215 to the center of the rubber air bag 204, it will drive the abutting plate 217 and the two ball pressure plates 218 on the bottom end of the abutting plate 217 to move, until each group of ball pressure plates 218 can directly adhere to the inner ring of the rubber air bag 204. The bag body makes it tightly contact the workpiece in contact with the rubber air bag 204, and fixes it, and the continuously passive upward movement of the tooth plate will contact the horizontal plate 208 to drive it to move upward synchronously, and the upward movement of the horizontal plate 208 will drive the piston rod 207 to slide upward in the piston cylinder 206, so that the inner wall of the piston cylinder 206 generates a negative pressure suction force, which will pass through the flow guide pipe 205 to suck the gas in the rubber air bag 204, so that its form shrinks, so that the inner ring of the rubber air bag 204 will be tightly attached to the surface of the valve body workpiece, and the effect of fastening is achieved.

[0030] The workpiece fixing part 2 further comprises a vertical plate frame 201 fixedly connected to the top end outer wall of the machine base 1, and the vertical plate frame 201 is fixedly connected to the inner wall of the half-arc supporting plate 202 close to the top end outer wall. The inner wall of the half-arc supporting plate 202 is fixedly connected to the bottom end outer wall of the rubber air bag 204, and the inner wall of the one end plate body of the vertical plate frame 201 is fixedly connected with the pressure sensor 203. The piston structure comprises a flow guide pipe 205 fixedly connected to one end of the rubber air bag 204, and the other end of the flow guide pipe 205 is fixedly connected with the piston cylinder 206. The inner wall of the piston cylinder 206 is slidably connected with the piston rod 207, and the one end outer wall of the piston cylinder 206 is fixedly connected with the connecting plate. The one end plate body of the connecting plate is fixedly connected with the plate body of the vertical plate frame 201, and the top end outer wall of the piston rod 207 is fixedly connected with the horizontal plate 208.

[0031] Adopt the above scheme: under the drive of the electric cylinder 210, the rack continuously moves upward, which magnetically pulls the elastic expansion member in real time, so that the extension plate body continuously maintains the contraction state, until the smooth plate body is passively moved upward, causing the rack and the straight gear to disengage, at the same time, the elastic expansion member installed on the U-shaped groove plate 213 will automatically reset and no longer maintain the contraction state, thereby being able to be clamped with the teeth of the straight gear, playing a limiting role on the straight gear, and the continuously passively moving of the rack will touch the horizontal plate 208 to drive it to move upward synchronously, and the upward moving horizontal plate 208 will drive the piston rod 207 to slide upward in the piston cylinder 206, so that the inner wall of the piston cylinder 206 generates a negative pressure suction force, which will pass through the flow guide pipe 205 to suck the gas in the rubber air bag 204, causing it to shrink, so that the inner ring of the rubber air bag 204 tightly adheres to the surface of the valve body workpiece, playing a fastening effect, thereby the static friction force generated between the rubber air bag 204 and the valve body workpiece can resist external forces such as vibration and slight displacement, playing a double-layer fixing effect on the welding work between the valve body and the valve seat, improving the precision of the welding process.

[0032] The end plate body side of the vertical plate frame 201 is fixedly connected with a machine plate 209, and the top outer wall of the machine plate 209 is fixedly connected with an electric cylinder 210. The engagement transmission structure includes an engagement assembly 211 arranged on the movable end of the electric cylinder 210. The engagement assembly 211 is composed of a straight gear and a rack connected with one end of the straight gear. The rack is composed of a small rack and a long smooth plate. The plate body of the vertical plate frame 201 is fixedly connected with a U-shaped groove plate 213 which is in close sliding connection with the rack. The outer wall of one end of the U-shaped groove plate 213 is fixedly connected with an elastic expansion member. The appearance plate body of the elastic expansion member is made of metal material. The bottom plate body of the rack is fixedly connected with the movable end top of the electric cylinder 210. The plate body of the rack is coated with a magnetic layer which can magnetically attract the elastic expansion member. The top plate body of the rack can be intermittently connected with the bottom side plate body of the horizontal plate 208. A T-shaped shaft 212 is movably sleeved on the straight gear. The rod body of the T-shaped shaft 212 is fixedly connected with the plate body of the vertical plate frame 201. The end rod body of the T-shaped shaft 212 is fixedly connected with a pressure sensor 203. A plurality of inclined arc grooves 214 are arranged in the straight gear in a surrounding manner. The inner wall of each inclined arc groove 214 is in close sliding connection with each L-shaped slide rod 215, respectively. Each L-shaped slide rod 215 is further slidably connected with a bent sleeve rod 216. The end rod body of each bent sleeve rod 216 is fixedly connected with the outer wall of one end of the vertical plate frame 201.

[0033] Adopt the above scheme: when the pressure sensor 203 senses the pressure, it will detect the pressure change and convert it into an electrical signal, and then control the electric cylinder 210 on the top of the machine plate 209 to extend the rod body, so as to immediately drive the tooth plate in the meshing assembly 211 to move up in the U-shaped groove plate 213, and the tooth plate moving up will drive the spur gear to mesh and rotate, so that the spur gear in the rotating state will make the plurality of L-shaped slide rods 215 slide in the corresponding inclined arc grooves 214, and the passive sliding process of each L-shaped slide rod 215 will pass through the corresponding bent sleeve rod 216 to generate a guiding effect, and in the process of passive rotation of the spur gear driving the plurality of L-shaped slide rods 215 to slide to the center of the rubber air bag 204, the abutting plate 217 and the two ball pressing plates 218 on the bottom end of the abutting plate 217 will be moved, until each group of ball pressing plates 218 can directly adhere to the inner ring of the rubber air bag 204, so that it is tightly contacted with the workpiece in contact with the rubber air bag 204, and is positioned and fixed, and the shaft connection between each group of ball pressing plates 218 and the abutting plate 217 can automatically adjust the orientation according to the shape of the workpiece surface, so as to obtain the maximum area of contact with the workpiece surface, thereby forming multi-point positioning, greatly improving the fixing accuracy, and avoiding the events of deviation or shaking in the welding process.

[0034] The working principle and use process of the present application: by placing the valve body and valve seat in the pilot valve assembly on a set of opposite symmetrical vertical plate frames 201 respectively, the workpiece is respectively adhered to contact the inner ring of the rubber air bag 204 and the pressure sensor 203, when the pressure sensor 203 senses the pressure, it will detect the pressure change and convert it into an electrical signal, and then control the electric cylinder 210 on the top of the machine plate 209 to extend the rod body, so as to immediately drive the tooth plate in the meshing assembly 211 to move up in the U-shaped groove plate 213, and the tooth plate moving up will drive the spur gear to mesh and rotate, so that the spur gear in the rotating state will make the plurality of L-shaped slide rods 215 slide in the corresponding inclined arc grooves 214, and the passive sliding process of each L-shaped slide rod 215 will pass through the corresponding bent sleeve rod 216 to generate a guiding effect, and in the process of passive rotation of the spur gear driving the plurality of L-shaped slide rods 215 to slide to the center of the rubber air bag 204, the abutting plate 217 and the two ball pressing plates 218 on the bottom end of the abutting plate 217 will be moved, until each group of ball pressing plates 218 can directly adhere to the inner ring of the rubber air bag 204, so that it is tightly contacted with the workpiece in contact with the rubber air bag 204, and is positioned and fixed, and the shaft connection between each group of ball pressing plates 218 and the abutting plate 217 can automatically adjust the orientation according to the shape of the workpiece surface, so as to obtain the maximum area of contact with the workpiece surface, thereby forming multi-point positioning, greatly improving the fixing accuracy, and avoiding the events of deviation or shaking in the welding process; At this time, under the driving of the electric cylinder 210, the continuous upward movement of the rack will magnetically pull the elastic expansion member in real time, so that the extension plate body is kept in a contracted state, until the smooth plate body is passively moved upward, causing the rack and the spur gear to disengage, at the same time, the elastic expansion member installed on the U-shaped groove plate 213 will automatically reset and no longer keep the contracted state, thereby being able to be clamped with the teeth of the spur gear, playing a limiting role on the spur gear, and the continuous passive upward movement of the rack will touch the horizontal plate 208 to drive it to move upward synchronously, and the upward movement of the horizontal plate 208 will drive the piston rod 207 to slide upward in the piston cylinder 206, so that the inner wall of the piston cylinder 206 generates a negative pressure suction force, which will pass through the flow guide pipe 205 to suck the gas in the rubber air bag 204, so that the shape of the rubber air bag 204 is contracted, so that the inner ring of the rubber air bag 204 is tightly attached to the surface of the valve body workpiece, playing a fastening effect, so that the static friction force generated between the rubber air bag 204 and the valve body workpiece can resist external forces such as vibration and slight displacement, playing a double-layer fixing effect on the welding work between the valve body and the valve seat, improving the precision of the welding process, and the whole device is suitable for small and medium-sized enterprises.

[0035] It should be pointed out that the welding equipment for welding the valve body and the valve seat is the welding gun 102 and the ring rotating device 101 in the prior art, which realizes the omnidirectional rotary welding of the welding gun 102 in the ring rotating device 101, and the welding gun 102 can only adjust the diameter according to the welding position.

[0036] The present application covers any substitution, modification, equivalent method and scheme within the spirit and scope of the present application. In order to make the public have a thorough understanding of the present application, specific details are described in the preferred embodiments of the present application, and the present application can also be completely understood without the description of these details for those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. Any changes or replacements within the scope of the disclosed technology can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application.

Claims

1. A welding apparatus for pilot valve assembly machining, characterized by, Including machine base (1), the top end outer wall of machine base (1) is fixedly connected with multiple ring rotation devices (101), each ring rotation device (101) is rotatably connected with a welding gun (102), and each ring rotation device (101) is provided with a workpiece fixing part (2) at both sides; Each workpiece fixing part (2) includes a rubber air bag (204), and one end of each rubber air bag (204) is provided with a piston structure for different degrees of negative pressure deformation of the inner cavity of the rubber air bag (204), a plurality of L-shaped slide rods (215) are fixedly connected to the rubber air bag (204) in a surrounding manner, a pressing plate (217) is fixedly connected to the bottom end rod body of each L-shaped slide rod (215), and two ball pressing plates (218) are movably connected to the bottom end plate body of each pressing plate (217), the bottom end of each group of ball pressing plates (218) can be fixed at multiple points according to the pilot valve workpiece form positioned by the rubber air bag (204), and each group of L-shaped slide rods (215) is jointly provided with a meshing transmission structure.

2. The welding apparatus for pilot valve assembly machining of claim 1, wherein, The workpiece fixing part (2) further includes a vertical plate frame (201) fixedly connected to the top end outer wall of the machine base (1), a semicircular support plate (202) is fixedly connected to the end outer wall close to the top of the vertical plate frame (201), the inner wall of the semicircular support plate (202) is fixedly connected to the bottom end outer wall of the rubber air bag (204), and a pressure sensor (203) is fixedly connected to the inner wall of the one end plate body of the vertical plate frame (201).

3. The welding apparatus for pilot valve assembly machining of claim 1, wherein, The piston structure includes a flow guide pipe (205) fixedly connected to one end of the rubber air bag (204), a piston cylinder (206) is fixedly connected to the other end of the flow guide pipe (205), and a piston rod (207) is slidingly connected to the inner wall of the piston cylinder (206).

4. The welding apparatus for pilot valve assembly machining of claim 3, wherein, A connecting plate is fixedly connected to the one end outer wall of the piston cylinder (206), one end plate body of the connecting plate is fixedly connected to the plate body of the vertical plate frame (201), and a horizontal plate (208) is fixedly connected to the top end outer wall of the piston rod (207).

5. The welding apparatus for pilot valve assembly machining of claim 2, wherein, A machine plate (209) is fixedly connected to the one end plate body side of the vertical plate frame (201), and an electric cylinder (210) is fixedly connected to the top end outer wall of the machine plate (209).

6. The welding apparatus for pilot valve assembly machining of claim 2, wherein, The meshing transmission structure includes a meshing assembly (211) provided on the movable end of the electric cylinder (210), the meshing assembly (211) is composed of a spur gear and a toothed plate meshingly connected to one end of the spur gear, and the toothed plate is composed of a short gear rack and a long smooth plate.

7. The welding apparatus for pilot valve assembly machining of claim 6, wherein, The plate body of the vertical plate frame (201) is fixedly connected with a U-shaped groove plate (213) which is in close sliding connection with the tooth plate, one end of the U-shaped groove plate (213) is fixedly connected with an elastic expansion piece, the outer appearance plate body of the elastic expansion piece is made of metal material, the bottom plate body of the tooth plate is fixedly connected with the movable end top of the electric cylinder (210), the plate body of the tooth plate is coated with a magnetic layer which can be magnetically attracted to the elastic expansion piece, and the top plate body of the tooth plate can be intermittently connected with the bottom one side plate body of the horizontal plate (208).

8. The welding apparatus for pilot valve assembly machining of claim 7, wherein, The T-shaped shaft rod (212) is movably sleeved on the spur gear, the rod body of the T-shaped shaft rod (212) is fixedly connected with the plate body of the vertical plate frame (201), and one end of the rod body of the T-shaped shaft rod (212) is fixedly connected with the pressure sensor (203).

9. The welding apparatus for pilot valve assembly machining of claim 8, wherein, A plurality of inclined arc grooves (214) are annularly and throughly formed on the spur gear, and the inner walls of each inclined arc groove (214) are respectively and correspondingly in close sliding connection with each L-shaped slide rod (215).

10. The welding apparatus for pilot valve assembly machining of claim 9, wherein, Each L-shaped slide rod (215) is further slidably connected with a bent sleeve rod (216) on a section of the rod body, and one end of the rod body of each bent sleeve rod (216) is fixedly connected with one end of the outer wall of the vertical plate frame (201).

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