Automatic overturning device for double-sided printing of socks

Abstract

The automatic overturning device comprises a rack and a main shaft rotationally connected to the rack, the other end of the main shaft is connected with a sleeve plate, the rack is connected with a rotating piece, the rotating piece is used for driving the main shaft to rotate, the end, away from the rotating piece, of the main shaft is connected with a supporting plate, the supporting plate is provided with a connecting groove, and one end of the sleeve plate is embedded into the connecting groove; two clamping plates are connected into the connecting groove, the two clamping plates are distributed at intervals in the vertical direction, a clamping opening allowing the sleeve plate to be embedded is formed by the two clamping plates at intervals, the supporting plate is connected with a driving part, and the driving part is used for driving the clamping plates to be slidably connected into the connecting groove in the vertical direction and get close to each other or get away from each other. And when the sleeve plate is disassembled, the driving piece drives the two clamping plates to move in the vertical direction and get away from each other, so that the clamping openings are opened, and the sleeve plate is convenient to clean and replace.

Description

Technical Field

[0001] This application relates to the field of sock production equipment, and particularly to an automatic turning device for double-sided printing of socks. Background Art

[0002] Socks can also be decorated through techniques such as printing, weaving patterns, and embroidery, making them more artistically valuable, and they are clothing that can both protect the feet and possess aesthetics and fashionability.

[0003] The Chinese patent with the authorization announcement number CN2659681Y discloses a sock printing turning mechanism, which mainly includes a handle, a mounting plate, a sock plate, a rotating shaft, a turning shaft, etc. Two symmetrical sock plates are tightly clamped by a clamping plate. The clamping plate is fixed at one end of the rotating shaft. The other end of the rotating shaft is sleeved with a turning shaft, and a retaining ring and a set screw are provided to limit the axial movement of the rotating shaft. The axis lines of the rotating shaft and the turning shaft are in the same plane and perpendicular to each other. A turning shaft inclined surface sleeve and a handle inclined surface sleeve are sleeved outside the turning shaft. The inclined surfaces of the turning shaft inclined surface sleeve and the handle inclined surface sleeve face each other. The axial clearance of the turning shaft is adjustable. The handle inclined surface sleeve is connected to the handle, and a mounting plate is welded on the turning shaft inclined surface sleeve and connected to the printing table machine. The utility model has a simple structure. Moving the handle can flexibly control the simultaneous relaxation and simultaneous locking of the rotating shaft and the turning shaft. The sock plates can maintain a symmetrical pattern when rotated forward and backward, enabling socks and gloves to conveniently and quickly achieve color matching and symmetrical printing on the printing table machine.

[0004] In view of the above related technologies, the sock plate is tightly connected to the clamping plate by set screws. After long-term use, the sock plate is easily damaged or stained with color paste, and it is rather troublesome to disassemble the set screws, which is not convenient for cleaning and replacing the set plate. Content of the Utility Model

[0005] In order to facilitate the disassembly and assembly of the set plate and make it convenient to replace or clean the set plate, this application provides an automatic turning device for double-sided printing of socks.

[0006] The automatic turning device for double-sided printing of socks provided by this application adopts the following technical solutions:

[0007] An automatic turning device for double-sided printing of socks, including a frame and a main shaft rotatably connected to the frame. One end of the main shaft is connected to the frame, and the other end of the main shaft is connected with a sleeve plate. The length direction of the sleeve plate is consistent with the length direction of the main shaft. The frame is connected with a rotating member for driving the main shaft to rotate. One end of the main shaft away from the rotating member is connected with a support plate. The length direction of the support plate is consistent with the width direction of the main shaft. A connecting groove is opened on one side of the support plate away from the main shaft. The length direction of the connecting groove is consistent with the length direction of the support plate. One end of the sleeve plate along its length direction is embedded in the connecting groove. Two clamping plates are connected in the connecting groove. The length direction of the clamping plates is consistent with the length direction of the support plate. The two clamping plates are spaced apart in the vertical direction. A clamping opening for the sleeve plate to be embedded is formed between the two clamping plates. The support plate is connected with a driving member for driving the clamping plates to slide vertically in the connecting groove and move closer to or away from each other.

[0008] By adopting the above technical solution, before printing, the sock is sleeved on the sleeve plate. One end of the sleeve plate is embedded in the connecting groove. The driving member drives the two clamping plates to move along the vertical direction and makes the two clamping plates move closer to each other, so that the clamping plates clamp the sleeve plate, so that the sleeve plate is stably connected in the connecting groove. After printing one side of the sock, the rotating member drives the main shaft to rotate, so as to drive the sleeve plate to rotate, which is convenient for printing the other side of the sock. When disassembling the sleeve plate, the driving member drives the two clamping plates to move along the vertical direction and move away from each other, so that the clamping opening is opened, which is convenient for cleaning and replacing the sleeve plate.

[0009] Optionally, a moving groove is opened on the inner wall of one side of the connecting groove along the width direction of the support plate. The driving member is a threaded rod. The length direction of the threaded rod is consistent with the vertical direction. The threaded rod is rotatably connected in the moving groove. Both ends of the threaded rod along its length direction pass through the side wall of the moving groove. The threaded rod includes a positive thread section and a reverse thread section. One clamping plate is threadedly sleeved on the positive thread section, and the other clamping plate is threadedly sleeved on the reverse thread section. The clamping plate is slidably connected to the moving groove in the vertical direction.

[0010] By adopting the above technical solution, when installing the sleeve plate, one end of the sleeve plate is embedded in the clamping opening. Rotate the threaded rod to make the two clamping plates slide vertically in the moving groove and move closer to each other, so that the clamping plates clamp the sleeve plate and the sleeve plate is stably connected in the connecting groove.

[0011] Optionally, limiting blocks are connected to both sides of the clamping plate along the length direction of the support plate. Limiting grooves are opened on the inner walls of both sides of the moving groove along the length direction of the support plate. The length direction of the limiting grooves is consistent with the vertical direction. The limiting blocks are slidably connected to the limiting grooves in the vertical direction.

[0012] By adopting the above technical solution, when the clamping plate is slidably connected in the connecting groove along the vertical direction, the limiting block is slidably connected in the limiting groove along the vertical direction, thereby allowing the clamping plate to move stably in a predetermined direction.

[0013] Optionally, the support plate is rotatably connected to a limit plate on both sides along its length direction, one end of the limit plate is connected to the support plate, and the other end of the limit plate is in contact with a side wall of the sleeve plate along the length direction of the support plate. The support plate is also connected to a rotating assembly, which is used to drive the limit plate to rotate.

[0014] By adopting the above technical solution, when one end of the sleeve is embedded in the clamping mouth, the rotating assembly drives the limiting plate to rotate, the limiting plate rotates and drives the sleeve to move, and makes the sleeve located in the middle of the connecting groove, so as to position the sleeve and minimize the influence of the sleeve position offset on the printing effect.

[0015] The cam is connected to the support plate at both ends along its length direction, and the length direction of the rotation rod is consistent with the vertical direction, and the length direction of the rotation axis of the rotation rod is consistent with the vertical direction, and one end of the limit plate is connected to the rotation rod, and the rotation assembly includes a slider, a first rod, and a second rod, and the support plate is provided with a sliding hole, and the length direction of the sliding hole is consistent with the length direction of the sleeve plate, and the slider is slidably connected to the sliding hole along the width direction of the support plate, one end of the first rod is hinged to the slider, and the other end of the first rod is hinged to one end of the second rod, and the other end of the second rod is connected to the rotation rod, and the support plate is connected to a mounting plate on the side away from the sleeve plate, and the other end of the mounting plate is connected to the main shaft, and the mounting plate is connected to a pushing member, and the pushing member is used to drive the slider to slide along the width direction of the support plate and be connected in the sliding hole.

[0016] By adopting the above technical solution, the pusher drives the slider to slide along the width direction of the support plate and connect to the sliding hole, thereby driving the first rod to move, the second rod follows the movement of the first rod and drives the rotating rod to rotate, and the limit plate follows the rotation of the rotating rod, thereby facilitating the limit plate to position the sleeve plate.

[0017] Optionally, the pushing member includes a first cylinder and a connecting rod. The first cylinder is connected to the mounting plate. The length direction of the connecting rod is consistent with the length direction of the support plate. The connecting rod is connected to the piston rod of the first cylinder. The connecting rod is connected to two sliders at both ends along its length direction. The first cylinder is used to drive the connecting rod to move along the width direction of the support plate.

[0018] By adopting the above technical solution, the first cylinder drives the connecting rod to move along the width direction of the support plate, and the two sliders follow the connecting rod to move. The two sliders move synchronously along the width direction of the support plate, so that the rotation angles of the two limit plates are consistent, thereby improving the positioning effect of the limit plate on the sleeve plate.

[0019] Optionally, an elastic layer is connected to one side of the clamping plate close to the clamping opening, and the elastic layer contacts the sleeve plate.

[0020] By adopting the above technical solution, when the clamping plate clamps the sleeve plate, the elastic layer presses tightly against the sleeve plate, so that the sleeve plate is stably connected to the clamping plate.

[0021] Optionally, handles are connected to both ends of the threaded rod along its length direction.

[0022] By adopting the above technical solution, handles are added to facilitate the rotation of the threaded rod.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Before printing, the sock is sleeved on the sleeve plate, one end of the sleeve plate is embedded in the connection groove, the driving member drives the two clamping plates to move along the comb direction and makes the two clamping plates approach each other, so that the clamping plates clamp the sleeve plate, so that the sleeve plate is stably connected in the connection groove, and after printing one side of the sock, the rotating member drives the main shaft to rotate, so as to drive the sleeve plate to rotate, which is convenient for printing the other side of the sock. When disassembling the sleeve plate, the driving member drives the two clamping plates to move vertically and move away from each other, so that the clamping opening is opened, which is convenient for cleaning and replacing the sleeve plate;

[0025] 2. When installing the sleeve plate, one end of the sleeve plate is embedded in the clamping opening, the threaded rod is rotated, so that the two clamping plates are slidably connected in the moving groove along the vertical direction, and the two clamping plates approach each other, so that the clamping plates clamp the sleeve plate, and the sleeve plate is stably connected in the connection groove;

[0026] 3. When one end of the sleeve plate is embedded in the clamping opening, the rotating assembly drives the limiting plate to rotate, the limiting plate rotates and drives the sleeve plate to move, and the sleeve plate is located in the middle of the connection groove, so as to position the sleeve plate and avoid the influence of the sleeve plate position deviation on the printing effect as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the three-dimensional structure diagram of this embodiment.

[0028] Figure 2 is the top view of this embodiment.

[0029] Figure 3 is this embodiment Figure 2 The cross-sectional view taken along the line A-A in.

[0030] Figure 4 is the front view of this embodiment.

[0031] Figure 5 is this embodiment Figure 4 The cross-sectional view taken along the line B-B in.

[0032] Figure 6 is the enlarged view of part C in this embodiment Figure 1 .

[0033] Explanation of reference numerals: 100, frame; 110, first motor; 200, main shaft; 300, support plate; 310, connecting groove; 320, clamping plate; 321, elastic layer; 322, moving block; 323, limiting block; 330, clamping opening; 340, moving groove; 341, limiting groove; 350, rotating rod; 360, limiting plate; 370, connecting plate; 371, sliding hole; 380, mounting plate; 400, sleeve plate; 500, threaded rod; 510, right-handed thread section; 520, left-handed thread section; 530, handle; 600, rotating assembly; 610, slider; 620, first rod; 630, second rod; 700, pushing member; 710, first cylinder; 720, connecting rod. Detailed implementation manners

[0034] The following further elaborates on this application Figures 1-6 in conjunction with the attached drawings.

[0035] An embodiment of this application discloses an automatic turning device for double-sided printing of socks. Referring to Figure 1 and Figure 2 , an automatic turning device for double-sided printing of socks includes a frame 100 and a main shaft 200. The length direction of the main shaft 200 is consistent with the horizontal direction. One end of the main shaft 200 along its length direction is connected with a rotating member, and the rotating member is connected to the frame 100. The rotating member is used to drive the main shaft 200 to rotate. The other end of the main shaft 200 is connected with a support plate 300. The length direction of the support plate 300 is consistent with the horizontal direction, and the length direction of the support plate 300 is perpendicular to the length direction of the main shaft 200.

[0036] Referring to Figure 1 and Figure 3 , a connecting groove 310 is provided on one side of the support plate 300 along its width direction and away from the main shaft 200. The support plate 300 is connected with a sleeve plate 400. The length direction of the sleeve plate 400 is consistent with the length direction of the main shaft 200. One end of the sleeve plate 400 along its length direction is embedded in the connecting groove 310, and the sock is sleeved on the other end of the sleeve plate 400. Two clamping plates 320 are provided in the connecting groove 310. The length direction of the clamping plates 320 is consistent with the length direction of the support plate 300. The two clamping plates 320 are spaced apart in the vertical direction, and a clamping opening 330 for the sleeve plate 400 to be embedded is formed between the two clamping plates 320. The two clamping plates 320 are slidably connected in the connecting groove 310 in the vertical direction, and the two clamping plates 320 move closer to or away from each other. By driving the clamping plates 320 to move in the vertical direction and making the two clamping plates 320 move closer to or away from each other, it is convenient to replace and clean the sleeve plate 400.

[0037] Referring toFigure 3 and Figure 4 For the rotating member, it is provided for the first motor 110. The first motor 110 is connected to the frame 100, and the output shaft of the first motor 110 is connected to one end of the main shaft 200. A moving groove 340 is formed along the inner wall of one side in the width direction of the support plate 300, and the length direction of the moving groove 340 is consistent with the vertical direction. An elastic layer 321 is connected to the side of the clamping plate 320 close to the clamping opening 330. The elastic layer 321 is made of rubber material and contacts the sleeve plate 400. The support plate 300 is connected with a driving member, and the driving member is a threaded rod 5,000.

[0038] Referring to Figure 3 and Figure 5 , a moving block 322 is connected to one side of the clamping plate 320 in the width direction of the support plate 300. The moving block 322 is embedded in the moving groove 340, and the moving block 322 is slidably connected to the moving groove 340 in the vertical direction. The length direction of the threaded rod 500 is consistent with the vertical direction. The threaded rod 500 is rotatably connected to the moving groove 340. Both ends of the threaded rod 500 in its length direction pass through the side wall of the moving groove 340, and handles 530 are connected to both ends of the threaded rod 500 in its length direction. The threaded rod 500 includes a positive thread section 510 and a reverse thread section 520. One moving block 322 is threadedly sleeved on the positive thread section 510, and the other moving block 322 is threadedly sleeved on the reverse thread section 520.

[0039] Referring to Figure 3 and Figure 5 , limit blocks 323 are connected to both sides of the moving block 322 in the length direction of the support plate 300. Limiting grooves 341 for the limit blocks 323 to be embedded are formed on the inner walls of the opposite sides of the moving groove 340. The length direction of the limiting grooves 341 is consistent with the vertical direction, and the limit blocks 323 are slidably connected to the limiting grooves 341 in the vertical direction. Rotate the threaded rod 500 so that the two moving blocks 322 are slidably connected to the moving groove 340 in the vertical direction and drive the two clamping plates 320 to move vertically and approach or separate from each other.

[0040] Referring to Figure 1 and Figure 6 , rotating rods 350 are provided on the side walls of both sides of the support plate 300 in its length direction. The length direction of the rotating rods 350 is consistent with the vertical direction. The rotating rods 350 are rotatably connected to the support plate 300, and the rotation axis of the rotating rods 350 is collinear with the central axis of the rotating rods 350. A limiting plate 360 is fixedly connected to the circumferential side of the rotating rod 350. The length direction of the limiting plate 360 is consistent with the radial direction of the rotating rod 350. The other end of the limiting plate 360 contacts the side wall of one side of the sleeve plate 400 in the length direction of the support plate 300, and one side of the limiting plate 360 in its width direction contacts the sleeve plate 400.

[0041] Referring to Figure 1 andFigure 6 The support plate 300 is connected with a rotating assembly 600, and the rotating assembly 600 is used to drive the rotating rod 350 to rotate. The rotating assembly 600 includes a slider 610, a first rod 620, and a second rod 630. The support plate 300 is connected with a connecting plate 370 along its width direction and away from the sleeve plate 400. The length direction of the connecting plate 370 is the same as the width direction of the support plate 300. There are two connecting plates 370, and the two connecting plates 370 are respectively connected to both ends of the support plate 300 along the length direction of the support plate 300. A sliding hole 371 is formed on one side of the connecting plate 370 along the length direction of the support plate 300, and the depth direction of the sliding hole 371 is the same as the length direction of the support plate 300. The connecting plate 370 is provided with a sliding hole 371, and the length direction of the sliding hole 371 is the same as the width direction of the support plate 300. One connecting plate 370 corresponds to one rotating assembly 600.

[0042] Refer to Figure 1 and Figure 6 As shown in FIGS. and, the slider 610 is slidably connected in the sliding hole 371 along the width direction of the support plate 300. One end of the first rod 620 is hinged to one side of the slider 610 along the length direction of the support plate 300. The other end of the first rod 620 is hinged to one end of the second rod 630 along its length. The other end of the second rod 630 is fixedly connected to the periphery of the rotating rod 350. An installation plate 380 is connected to the side of the support plate 300 away from the sleeve plate 400. The length direction of the installation plate 380 is the same as the length direction of the main shaft 200, and the other end of the installation plate 380 is connected to the main shaft 200. The installation plate 380 is connected with a pushing member 700, and the pushing member 700 is used to drive the slider 610 to be slidably connected in the sliding hole 371 along the width direction of the support plate 300. The pushing member 700 includes a first cylinder 710 and a connecting rod 720. The first cylinder 710 is connected to the installation plate 380. The length direction of the connecting rod 720 is the same as the length direction of the support plate 300. The piston rod of the first cylinder 710 extends along the length direction of the main shaft 200, and the piston rod of the first cylinder 710 is connected to the connecting rod 720. Both ends of the connecting rod 720 along its length direction are respectively connected to the two sliders 610.

[0043] When installing the sleeve plate 400, the first cylinder 710 drives the connecting rod 720 to move along the length direction of the main shaft 200. The slider 610 follows the connecting rod 720 to move along the length direction of the main shaft 200. The slider 610 drives the first rod 620 to move, and the second rod 630 follows the first rod 620 to move, so as to drive the rotating rod 350 to rotate. The limiting plate 360 follows the rotating rod 350 to rotate. The limiting plate 360 contacts the sleeve plate 400, so as to drive the sleeve plate 400 to move to the middle of the support plate 300, and try to avoid the influence of the offset of the installation position of the sleeve plate 400 on the printing effect.

[0044] The implementation principle of an automatic flipping device for double-sided printing of socks in an embodiment of this application is as follows: When installing the mounting plate 400, one end of the plate 400 is inserted into the clamping opening 330. The first cylinder 710 drives the connecting rod 720 to move along the length direction of the main shaft 200. The connecting rod 720 drives the slider 610 to slide along the length direction of the main shaft 200 and is connected to the sliding hole 371. The slider 610 drives the first rod 620 to move, and the second rod 630 follows the first rod 620 to move. The second rod 630 drives the rotating rod 350 to rotate, and the limiting plate 360 follows the rotating rod 350 to rotate. The limiting plate 360 contacts the plate 400 and pushes the plate 400 to move to the middle of the support plate 300. After the positioning of the plate 400 is completed, turn the handle 530 to drive the threaded rod 500 to rotate, so that the two clamping plates 320 slide vertically in the connection groove 310 and the two clamping plates 320 approach each other, so that the clamping plates 320 clamp the plate 400, so that the plate 400 is stably connected in the connection groove 310. When replacing the plate 400, rotate the threaded rod 500 to make the two clamping plates 320 move away from each other, so as to facilitate the replacement and cleaning of the plate 400.

[0045] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An automatic turning device for double-sided printing of socks, characterized in that: It includes a frame (100) and a main shaft (200) rotatably connected to the frame (100). One end of the main shaft (200) is connected to the frame (100), and a sleeve plate (400) is connected to the other end of the main shaft (200). The length direction of the sleeve plate (400) is the same as that of the main shaft (200). The frame (100) is connected with a rotating member for driving the main shaft (200) to rotate. A support plate (300) is connected to the end of the main shaft (200) far from the rotating member. The length direction of the support plate (300) is the same as the width direction of the main shaft (200). A connecting groove (310) is formed on the side of the support plate (300) far from the main shaft (200). The length direction of the connecting groove (310) is the same as that of the support plate (300). One end of the sleeve plate (400) along its length direction is embedded in the connecting groove (310). Two clamping plates (320) are connected in the connecting groove (310). The length direction of the clamping plates (320) is the same as that of the support plate (300). The two clamping plates (320) are spaced apart in the vertical direction. A clamping opening (330) for the sleeve plate (400) to be embedded is formed between the two clamping plates (320). The support plate (300) is connected with a driving member for driving the clamping plates (320) to slide vertically in the connecting groove (310) and move closer to or away from each other.

2. The automatic turning device for double-sided printing of socks according to claim 1, characterized in that: A moving groove (340) is formed on the inner wall of one side of the connecting groove (310) along the width direction of the support plate (300). The driving member is a threaded rod (500). The length direction of the threaded rod (500) is the same as the vertical direction. The threaded rod (500) is rotatably connected in the moving groove (340). Both ends of the threaded rod (500) along its length direction pass through the side wall of the moving groove (340). The threaded rod (500) includes a positive thread section (510) and a reverse thread section (520). One clamping plate (320) is threadedly sleeved on the positive thread section (510), and the other clamping plate (320) is threadedly sleeved on the reverse thread section (520). The clamping plate (320) is slidably connected in the moving groove (340) in the vertical direction.

3. The automatic turning device for double-sided printing of socks according to claim 2, wherein: Limit blocks (323) are connected to both sides of the clamping plate (320) along the length direction of the support plate (300). Limit grooves (341) are formed on the inner walls of both sides of the moving groove (340) along the length direction of the support plate (300). The length direction of the limit grooves (341) is the same as the vertical direction. The limit blocks (323) are slidably connected in the limit grooves (341) in the vertical direction.

4. The automatic turning device for double-sided printing of a sock according to claim 2, characterized in that: Limit plates (360) are rotatably connected to both sides of the support plate (300) along its length direction. One end of the limit plate (360) is connected to the support plate (300), and the other end of the limit plate (360) contacts the side wall of the sleeve plate (400) along one side of the support plate (300) in the length direction. The support plate (300) is also connected with a rotating assembly (600) for driving the limit plate (360) to rotate.

5. The automatic turning device for double-sided printing of a sock according to claim 4, characterized in that: The support plate (300) is rotatably connected to rotating rods (350) at both ends along its length direction. The length direction of the rotating rods (350) is consistent with the vertical direction, and the length direction of the rotation axis of the rotating rods (350) is also consistent with the vertical direction. One end of the limiting plate (360) is connected to the rotating rod (350). The rotating assembly (600) includes a slider (610), a first rod (620), and a second rod (630). The support plate (300) is provided with a sliding hole (371), and the length direction of the sliding hole (371) is consistent with the length direction of the sleeve plate (400). The slider (610) is slidably connected in the sliding hole (371) along the width direction of the support plate (300). One end of the first rod (620) is hinged to the slider (610), the other end of the first rod (620) is hinged to one end of the second rod (630), and the other end of the second rod (630) is connected to the rotating rod (350). A mounting plate (380) is connected to the side of the support plate (300) away from the sleeve plate (400), and the other end of the mounting plate (380) is connected to the main shaft (200). The mounting plate (380) is connected with a pushing member (700), and the pushing member (700) is used to drive the slider (610) to be slidably connected in the sliding hole (371) along the width direction of the support plate (300).

6. The automatic turning device for double-sided printing of a sock according to claim 5, wherein: The pushing member (700) includes a first air cylinder (710) and a connecting rod (720). The first air cylinder (710) is connected to the mounting plate (380). The length direction of the connecting rod (720) is consistent with the length direction of the support plate (300). The connecting rod (720) is connected to the piston rod of the first air cylinder (710). Both ends of the connecting rod (720) along its length direction are respectively connected to two sliders (610). The first air cylinder (710) is used to drive the connecting rod (720) to move along the width direction of the support plate (300).

7. An automatic turning device for double-sided printing of socks according to claim 2, characterized in that: An elastic layer (321) is connected to the side of the clamping plate (320) close to the clamping opening (330), and the elastic layer contacts the sleeve plate (400).

8. The automatic turning device for double-sided printing of socks according to claim 2, characterized in that: Handles (530) are connected to both ends of the threaded rod (500) along its length direction.

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