CN116174239A

CN116174239A - Rotary hollow glass production device

Info

Publication number: CN116174239A
Application number: CN202211635129.0A
Authority: CN
Inventors: 颜平安; 危元旦; 颜海波
Original assignee: Xinning Zhongkai Tempered Glass Co ltd
Current assignee: Xinning Zhongkai Tempered Glass Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-30

Abstract

The invention discloses a rotary hollow glass production device, which belongs to the field of hollow glass production and comprises a rotating arm rotating around a vertical axis, a rubberizing mechanism and an assembling mechanism, wherein the rubberizing mechanism and the assembling mechanism are arranged in an annular array along the rotating axis of the rotating arm, the tail end of the rotating arm is provided with a picking and placing mechanism, the picking and placing mechanism comprises a support and a clamping group, the support is connected with the rotating arm, the clamping group comprises clamping plates which are arranged transversely and oppositely, the distance between the two clamping plates is adjustable, the rubberizing mechanism comprises a workbench, the upper end of the workbench is provided with a movable seat, the upper end of the movable seat is provided with a sliding seat moving along the edge of a spacing frame, the sliding seat is provided with rubberizing parts at intervals along the vertical direction, and the moving direction of the sliding seat and the movable seat is vertical to a horizontal projection plane. The invention aims to provide a rotary hollow glass production device, which aims to improve the automation level of sizing and reduce the labor intensity of operators.

Description

Rotary hollow glass production device

Technical Field

The invention relates to the field of double-layer glass production, in particular to a rotary hollow glass production device.

Background

The production flow of the hollow glass (multi-layer glass) is as follows: bending hollow aluminum strips, plastic steel and other pipes to form spacer frames, and filling molecular sieves into the spacer frames; after the processing of the spacer frame is finished, smearing or spraying butyl rubber and the like on the side walls of the two sides of the spacer frame to form a first sealant; the steps are carried out, and meanwhile, the glass is cleaned and dried, so that no impurities are generated on the glass; after the spacer frame and the glass are processed, an operator installs the glass on two sides of the spacer frame and sends the glass into a sheet combining machine so that the glass and the spacer frame are bonded together, and finally, sheet combining and glue sealing are carried out and packaging are carried out. Vacuum pumping or injection of protective gas such as argon gas between two layers of glass can be carried out according to the requirement.

In the above step, the spacer frame is manually held during the first sealant feeding process, and then the spacer frame is moved between the two sealant feeding heads so as to smear or spray the sealant onto the spacer frame, and in the sealant feeding process, an operator rotates the spacer frame so as to glue the whole circle of spacer frame. In the above process, the worker needs to completely take and move the spacer frame to the glue applying position, then hold the spacer frame to slide between the glue applying heads in the glue applying process, and when one edge is glued, the spacer frame needs to be rotated to replace the processing edge, and in the glue applying process of the first sealant, the above actions need to be repeated for a plurality of times. Taking rectangular double-layer glass as an example, the whole gluing process is to finish three times of overturning and four times of moving of the spacer frame, and when the spacer frame is manually held for gluing in batch production, great workload is brought to operators.

Disclosure of Invention

The invention aims to solve the problems and provide a rotary hollow glass production device which can improve the automation level of sizing and reduce the labor intensity of operators.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a rotation type cavity glass apparatus for producing, it includes around vertical axis pivoted swinging boom to and rubberizing mechanism, the equipment mechanism that sets up along swinging boom axis of rotation annular array, the end of swinging boom is provided with gets and puts the mechanism, get and put the mechanism and include the support and the centre gripping group of being connected with the swinging boom, the centre gripping group includes the grip block that set up along horizontal relatively, and the distance between two grip blocks is adjustable, and rubberizing in-process, the grip block is rotatory with the spacer frame, rubberizing mechanism includes the workstation, the workstation upper end is provided with the movable seat, the movable seat upper end is provided with the sliding seat that removes along the spacer frame border, be provided with rubberizing portion along vertical direction interval on the sliding seat, the sliding seat is perpendicular on the horizontal projection face with the direction of movement of movable seat. The clamping plate moves to the gluing mechanism with the spacing frame, and the gluing is automatically completed through the rotation of the spacing frame and the movement of the sliding seat and the moving seat; after the gluing is finished, the clamping plate can move to the assembling mechanism with the spacing frame, so that the spacing frame is arranged on the glass, and the labor intensity of operators is further reduced.

Further, in order to glue the in-process, can rotate with the spacer frame through the grip block to glue all sides of spacer frame, the support lower extreme rotates with the roating seat upper end and is connected, be provided with on the support and be used for driving roating seat pivoted rotary driving mechanism.

Further, in order not to interfere with the movement of the slide seat, the holding plate holds the spacer frame from the inside, so that when the spacer frame is lowered, a drag mark is left on the glass; the lower end of the rotating seat is connected with the bracket through the connecting rod, the middle part of the bracket is provided with a mounting hole in a penetrating way, the clamping plate is rotatably arranged in the mounting hole, the side wall of the clamping plate is provided with a passive part, and the passive part extends to the inner side of the bracket; the rotary seat is provided with a clamping driving mechanism, the pushing plate moves vertically under the action of the clamping driving mechanism, and the driven part is positioned below the pushing plate and on the moving path of the pushing plate. When the pushing plate moves downwards, the lower end of the clamping plate swings towards the outer side of the support, so that the spacing frame is clamped, when the pushing plate moves upwards, the clamping face of the lower end of the clamping plate swings towards the inner side of the support, so that the spacing frame is loosened, in the process, the lower end of the clamping plate during clamping is nearest to the glass, and when the spacing frame is loosened, the clamping plate cannot contact the glass, so that a dragging mark is left on the glass.

Further, for the spacer frame of adaptation not unidimensional, be provided with adjustment portion between support and the grip block, adjustment portion follows lateral shifting to can adjust the distance between the both sides grip block, in this scheme, the grip block middle part is connected through pivot and adjustment portion lateral wall rotation.

Further, in order to move the adjusting part, a screw is transversely arranged on the support, one end of the screw extends into the mounting hole and is connected with a bearing on the adjusting part, and the other end of the screw extends to the outer side of the support and is connected with the handle.

Further, after the pushing plate moves upwards, in order to ensure that the lower end of the clamping plate can swing towards the inner side of the bracket, a spring is transversely arranged on one side of the clamping plate on the adjusting part, and the spring is arranged below the rotating joint of the clamping plate.

Further, in order to avoid the grip block to overturn excessively to influence next production or lead to the spacer frame to warp, adjustment portion is provided with spacing portion and lower spacing portion along vertical range in grip block one side.

Further, in order to further improve the automation level, the automatic feeding device further comprises a storage part with an open upper end, wherein the storage part is positioned on a moving path of the picking and placing mechanism, a bearing plate moving vertically is arranged in the storage part, and the automatic feeding of the spacer frame is realized by utilizing the rising of the bearing plate.

Further, the assembly mechanism comprises a lower transmission part, the lower transmission part comprises a lower rack, lower transmission rollers are arranged on the lower rack in a transverse arrangement mode, and the cleaned and dried glass moves to an assembly station under the conveying of the lower transmission rollers; the lower adsorption part is arranged between the lower driving rollers and arranged on the lower lifting seat, the lower end of the lower lifting seat is connected with the upper end of the cross beam, the lower end of the cross beam is connected with the vertical driving mechanism, and the lower lifting seat is driven to rise through the vertical driving mechanism, so that the lower adsorption part is used for fixing glass and lifting the glass from the lower driving rollers, and the lower end of the spacing frame is bonded with the glass.

Further, in order to mount another piece of glass on the upper end of the spacer frame, the assembly mechanism further comprises an upper transmission part, wherein the upper transmission part is positioned obliquely above the lower transmission part; the upper adsorption part is arranged above the upper transmission part and connected with the material taking driving mechanism, and the material taking driving mechanism is provided with a translation seat which transversely moves.

The invention has the beneficial effects that: the lower part of the clamping plate swings to the outer side of the bracket, so that the spacer frame is fixed, then the clamping plate moves to the gluing mechanism along with the spacer frame, and the gluing of the first sealant is automatically completed along with the movement of the gluing part and the rotation of the spacer frame, so that automatic gluing is realized, and the labor intensity of operators is reduced. Meanwhile, after the gluing is finished, the rotating arm moves the spacing frame to the assembling mechanism so as to install glass at two ends of the spacing frame, and in the process of assembling the spacing frame and the glass, the clamping plate can be prevented from leaving a drag mark on the glass in the process of loosening the spacing frame.

Drawings

Fig. 1 is a schematic view of the arrangement of the mechanisms in a plan view.

Fig. 2 is a schematic diagram of a cooperation structure of the gluing mechanism and the picking and placing mechanism in a side view state.

Fig. 3 is a schematic side view of the pick-and-place mechanism.

Fig. 4 is a schematic side view of the storage section.

Fig. 5 is a schematic side view of the assembly mechanism.

The text labels in the figures are expressed as: 1. a rotating arm; 2. a sizing mechanism; 201. a work table; 202. a movable seat; 203. a sliding seat; 204. a sizing part; 3. an assembly mechanism; 301. a lower transmission part; 302. a lower frame; 303. a lower driving roller; 304. a lower adsorption part; 305. a lower lifting seat; 306. a vertical driving mechanism; 307. an upper transmission part; 308. an upper adsorption part; 309. a material taking driving mechanism; 310. a translation seat; 4. a picking and placing mechanism; 401. a support; 402. a clamping plate; 403. a rotating seat; 404. a rotary driving mechanism; 405. a bracket; 406. a mounting hole; 407. a passive part; 408. a clamping driving mechanism; 409. a pushing plate; 410. an adjusting part; 411. a screw; 412. a handle; 413. a spring; 414. an upper limit part; 415. a lower limit part; 5. a spacer frame; 6. a storage unit; 601. and a bearing plate.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.

Example 1: a rotary hollow glass production device, as shown in fig. 1-2, comprising a rotary arm 1 rotating around a vertical axis, wherein the arrow in fig. 1 shows the rotation direction of the rotary arm 1; the swinging boom 1 accessible motor etc. drive, swinging boom 1 can set up a plurality ofly around the rotation axis, like this when follow-up production, can glue simultaneously, equipment etc. improves production efficiency, and it still includes rubberizing mechanism 2, the equipment mechanism 3 that follow swinging boom 1 axis of rotation annular array set up, the end of swinging boom 1 is provided with gets and puts mechanism 4.

The picking and placing mechanism 4 comprises a support 401 connected with the rotating arm 1 and a clamping group installed on the support 401, the clamping group comprises clamping plates 402 which are arranged transversely and oppositely, the distance between the two clamping plates 402 is adjustable, in the gluing process, the clamping plates 402 rotate with the spacer frame 5, the gluing mechanism 2 comprises a workbench 201, the upper end of the workbench 201 is provided with a movable seat 202, the upper end of the movable seat 202 is provided with a sliding seat 203 which moves along the edge of the spacer frame 5, the movable seat 202 and the sliding seat 203 can be driven by an air cylinder and the like, in the embodiment, the movable seat 202 and the sliding seat 203 are respectively in threaded connection with the movable screw and the sliding screw, the movable seat 202 and the sliding seat 203 are driven to move by the rotation of the movable screw and the sliding screw, the movable seat 202 is arranged in a sliding groove at the upper end of the workbench 201, the sliding seat 203 is provided with a gluing part 204 along the vertical direction at intervals, the gluing part 204 can adopt a spray head or a glue spreader and the like, a runner is arranged in the sliding seat 203 and is connected with a mechanism which stores sealing glue, and the sealing glue is sprayed on the upper end face or the upper end face of the sealing part 204 along the upper part or the lower end face of the sliding seat 204 under the action of a pump and the like.

The specific working process comprises the following steps: the spacer frame 5 is placed outside the holding plate 402, and the holding plate 402 is moved to the outside of the holder 401 to hold the spacer frame 5 from the inside, so that the spacer frame can be moved between the rubberizing portions 204 in a flat posture, and the holding plate 402 does not interfere with the normal movement of the rubberizing portions 204.

Then, the clamping plate 402 moves to the gluing mechanism 2 along with the rotation of the rotating arm 1 along with the spacer frame 5, at this time, one edge of the spacer frame 5 is located between the upper and lower gluing portions 204, along with the movement of the gluing portions 204, the upper and lower end faces of the edge of the spacer frame 5 are glued, after the gluing of one edge is completed, the moving seat 202 moves away from the spacer frame 5 along with the sliding seat 203, then the spacer frame 5 rotates, after the rotation of the spacer frame 5 is completed, the moving seat 202 moves closer to the spacer frame 5 along with the sliding seat 203, the gluing is performed again, and the above actions are repeated until the gluing of all edges is completed.

After the sizing is completed, the pick-and-place mechanism 4 moves to the assembling mechanism 3 with the spacer frame 5 to mount the glass on the spacer frame 5.

Example 2: as shown in fig. 3, in other structures and working processes of this embodiment, reference may be made to embodiment 1, but in this embodiment, the lower end of the support 401 is connected to the upper end of the rotating base 403 through a bearing, a rotation driving mechanism 404 for driving the rotating base 403 to rotate is provided on the support 401, the rotation driving mechanism 404 may use a driving gear driven by a rotating motor, a driven gear meshed with the driving gear is provided on the rotating base 403, and a center line between a rotation axis of the rotating base 403 and the clamping plate coincides.

The lower end of the rotating seat 403 is connected with a bracket 405 through a connecting rod, a mounting hole 406 is formed in the middle of the bracket 405 in a penetrating manner, the clamping plate 402 is rotatably arranged in the mounting hole 406, a passive part 407 is arranged on the side wall of the clamping plate 402, and the passive part 407 extends to the inner side of the bracket 405; the rotating seat 403 is provided with a clamping driving mechanism 408, the pushing plate 409 moves vertically under the action of the clamping driving mechanism 408, the passive part 407 is located below the pushing plate 409, and the passive part 407 is located on the moving path of the pushing plate 409.

The specific working process comprises the following steps: when the clamping plate 402 is in the vertical state, the lower end of the clamping plate 402 extends out of the bracket, and the lower end surface of the clamping plate 402 is located at the lowest position which can be reached. During clamping, the pushing plate 409 moves downward to contact with the passive part 407, and at this time, the clamping plate 402 is driven to be in a vertical state and contact with the inner wall of the spacer frame 5 due to the movement of the pushing plate 409, so that the clamping of the spacer frame 5 is completed.

When the spacer frame 5 needs to be released, the pushing plate 409 swings upwards, at this time, the passive part 407 loses the limit of the pushing plate 409, and the clamping plate 402 swings towards the inner side of the bracket 405 under the action of the swinging cylinder or the balancing weight at the upper end of the clamping plate 402, at this time, the distance between the lower ends of the brackets 405 at two sides is reduced, so that the spacer frame 5 is released.

Example 3: as shown in fig. 3, in the embodiment, although reference may be made to embodiment 2 for other structures and working processes, in the embodiment, an adjusting portion 410 is disposed between the support 405 and the clamping plate 402, the adjusting portion 410 is pushed by an air cylinder or the like to move in a lateral direction, in the embodiment, a screw 411 is disposed on the support 405 in the lateral direction, one end of the screw 411 extends into the mounting hole 406 to be connected with a bearing on the adjusting portion 410, and the other end of the screw 411 extends to the outside of the support 405 and is connected with a handle 412

The middle part of the clamping plate 402 is rotatably connected with the side wall of the adjusting part 410 through a rotating shaft; the adjusting portion 410 is provided with an upper limiting portion 414, a lower limiting portion 415, and a spring 413 in sequence from top to bottom along the vertical direction on one side of the clamping plate 402, and the upper limiting portion 414, the lower limiting portion 415, and the spring 413 extend toward the inner side of the bracket 405.

In specific operation, when the clamping plate 402 is in a vertical state, the lower limiting portion 415 is in contact with the side wall of the clamping plate 402, the lower end of the clamping plate 402 is limited to swing to a vertical state at maximum due to the arrangement of the lower limiting portion 415, the spring 413 is in a compressed state, and when the pushing plate 409 moves upwards, the spring 413 stretches and resets, so that the clamping plate 402 swings until the upper limiting portion 414 is in contact with the side wall of the clamping plate 402, so that the passive portion 407 is located on the moving path of the pushing plate 409.

Example 4: as shown in fig. 4, other structures and working processes of the present embodiment can refer to embodiments 1-3, but in the present embodiment, the apparatus further includes a storage portion 6 with an open upper end, the storage portion 6 is located on a moving path of the pick-and-place mechanism 4, and a vertically moving carrier plate 601 is disposed in the storage portion 6.

In a specific working process, when the spacer frame 5 needs to be clamped, the support moves to the upper side of the spacer frame 5 with the clamping plate 402, then the bearing plate 601 is driven by the air cylinder or rises along with the rotation of the vertically arranged feeding screw rod, an induction unit such as a proximity switch and a photoelectric sensor can be arranged at a designated position, when the uppermost spacer frame 5 in the storage part 6 extends out of the storage part 6, the induction unit sends a signal to the control unit, after the control unit processes the signal, the bearing plate 601 is controlled to stop rising, and the lower end of the clamping plate 402 swings to the outer side of the support, so that the spacer frame 5 is clamped.

Example 5: as shown in fig. 5, other structures and working processes of the present embodiment can refer to embodiments 1-4, but in the present embodiment, the assembly mechanism 3 includes a lower transmission portion 301, where the lower transmission portion 301 includes a lower frame 302, and lower transmission rollers 303 are disposed on the lower frame 302 in a transverse arrangement; be provided with lower adsorption part 304 between the lower driving roller 303, the in-process of lower driving roller 303 conveying glass, the up end of lower adsorption part 304 is less than the up end of lower driving roller 303, lower adsorption part 304 sets up on lower lift seat 305, lower lift seat 305 lower extreme is connected with the crossbeam upper end, the crossbeam lower extreme is connected with vertical actuating mechanism 306.

The assembly mechanism 3 further comprises an upper transmission part 307, wherein the upper transmission part 307 can adopt a belt conveyor, a roller conveyor and the like, and the upper transmission part 307 is positioned obliquely above the lower transmission part 301; the upper adsorption part 308 is arranged above the upper transmission part 307, the upper adsorption part 308 and the lower adsorption part 304 can adopt vacuum suction cups, the upper adsorption part 308 is connected with the material taking driving mechanism 309, the material taking driving mechanism 309 and the vertical driving mechanism 306 can adopt linear driving structures in the prior art such as electric push rods, the material taking driving mechanism 309 is provided with a translation seat 310, and the translation seat 310 transversely moves under the action of the linear driving structure.

Positioning plates can be arranged on two sides of the glass moving path and in front of the moving path to ensure that the installation position of the same batch is kept unchanged, the production quality is improved, then a proximity switch, a visual sensor and the like are matched to detect the position of glass, detected signals are sent to a control system, and after the control system analyzes data, the assembly mechanism 3 is controlled to work.

The specific working process comprises the following steps: when the glued spacer frame moves to the assembly mechanism 3, the lower adsorption part 304 is lifted and extends out from between the lower driving rollers 303 to drive the glass to lift from the lower driving part 301 to be glued with the lower end of the spacer frame 5, then the clamping plate releases the spacer frame 5 and moves away from the assembly mechanism 3, the upper adsorption part 308 adsorbs the glass and then moves above the spacer frame 5, the material taking driving mechanism 309 drives the upper adsorption part 308 to descend, so that the glass is mounted on the upper end of the spacer frame 5, and then the glass is mounted on the upper end and the lower end of the spacer frame 5, and the upper end and the lower end of the spacer frame 5 in the embodiment are all limited by the horizontally-arranged spacer frame 5 for convenience of description, but the specific structure is not limited.

After the glass is installed, an operator can take away the vacuum glass, or the lower adsorption part 304 is lowered to be lower than the upper end surface of the lower transmission roller 303, and the lower transmission part 301 is used for taking away the vacuum glass.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.

Claims

1. The utility model provides a rotation type cavity glass apparatus for producing, its characterized in that includes swivel arm (1) around vertical axis pivoted to and rubberizing mechanism (2), equipment mechanism (3) that follow swivel arm (1) axis of rotation annular array set up, the end of swivel arm (1) is provided with gets and puts mechanism (4), get and put mechanism (4) including support (401) and the clamping group of being connected with swivel arm (1), the clamping group is including along transversely opposite clamping plate (402) that set up, and the distance between two clamping plates (402) is adjustable, and rubberizing in-process, clamping plate (402) are rotatory along spacer frame (5), rubberizing mechanism (2) are including workstation (201), workstation (201) upper end is provided with movable seat (202), movable seat (202) upper end is provided with sliding seat (203) along spacer frame (5) border removal, be provided with rubberizing portion (204) along vertical direction interval on sliding seat (203), on sliding seat (203) and movable seat (202) moving direction perpendicular to horizontal projection face.

2. The rotary hollow glass production device according to claim 1, wherein the lower end of the support (401) is rotatably connected with the upper end of the rotary seat (403), and a rotary driving mechanism (404) for driving the rotary seat (403) to rotate is arranged on the support (401).

3. The rotary hollow glass production device according to claim 2, wherein the lower end of the rotary seat (403) is connected with the bracket (405) through a connecting rod, a mounting hole (406) is formed in the middle of the bracket (405) in a penetrating manner, the clamping plate (402) is rotatably arranged in the mounting hole (406), a passive part (407) is arranged on the side wall of the clamping plate (402), and the passive part (407) extends to the inner side of the bracket (405); the rotary seat (403) is provided with a clamping driving mechanism (408), the pushing plate (409) moves vertically under the action of the clamping driving mechanism (408), the driven part (407) is located below the pushing plate (409) and the driven part (407) is located on the moving path of the pushing plate (409).

4. A rotary hollow glass production device according to claim 3, wherein an adjusting part (410) is arranged between the bracket (405) and the clamping plate (402), the adjusting part (410) moves transversely, and the middle part of the clamping plate (402) is rotatably connected with the side wall of the adjusting part (410) through a rotating shaft.

5. The rotary hollow glass production device according to claim 4, wherein a screw rod (411) is transversely arranged on the bracket (405), one end of the screw rod (411) extends into the mounting hole (406) to be connected with a bearing on the adjusting part (410), and the other end of the screw rod (411) extends to the outer side of the bracket (405) and is connected with the handle (412).

6. The apparatus according to claim 4, wherein the adjusting portion (410) is provided with a spring (413) in a lateral direction on one side of the holding plate (402).

7. The apparatus according to claim 4, wherein the adjusting portion (410) is provided with an upper limit portion (414) and a lower limit portion (415) vertically arranged on one side of the holding plate (402).

8. A rotary hollow glass production device according to claim 1, further comprising a storage part (6) with an open upper end, wherein the storage part (6) is located on the moving path of the picking and placing mechanism (4), and a vertically moving bearing plate (601) is arranged in the storage part (6).

9. A rotary hollow glass production device according to any one of claims 1-8, wherein the assembly mechanism (3) comprises a lower transmission part (301), the lower transmission part (301) comprises a lower frame (302), and lower transmission rollers (303) are arranged on the lower frame (302) along the transverse direction; be provided with lower adsorption part (304) between lower driving roller (303), lower adsorption part (304) set up on lower lift seat (305), lower extreme and crossbeam upper end of lower lift seat (305) are connected, the crossbeam lower extreme is connected with vertical actuating mechanism (306).

10. A rotary hollow glass production device according to claim 9, characterized in that the assembly mechanism (3) further comprises an upper transmission part (307), the upper transmission part (307) being located obliquely above the lower transmission part (301); an upper adsorption part (308) is arranged above the upper transmission part (307), the upper adsorption part (308) is connected with a material taking driving mechanism (309), the material taking driving mechanism (309) is provided with a translation seat (310), and the translation seat (310) transversely moves.