CN218024191U

CN218024191U - Material rack for automatic stacking of glass

Info

Publication number: CN218024191U
Application number: CN202221528580.8U
Authority: CN
Inventors: 施建斌; 谢煌明; 游建平
Original assignee: Fujian Shigao Intelligent Technology Co ltd
Current assignee: Fujian Shigao Intelligent Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-12-13
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to the field of glass stacking equipment, in particular to a material rack for automatic glass stacking, which comprises a frame, a lifting assembly, an upper moving part and a lower moving part, wherein the upper moving part and the lower moving part are arranged in the frame, the upper moving part and the lower moving part are opposite up and down, and the lifting assembly drives the upper moving part to move towards the lower moving part; the upper moving part and the lower moving part can move along the length direction of the frame, a plurality of spaced poking rods are arranged on the upper moving part, and a plurality of spaced fixing grooves are arranged on the lower moving part. The upper moving piece can move towards the lower moving piece through the lifting assembly, so that the specification and the size of stacked glass products between the upper moving piece and the lower moving piece can be adjusted; the separation of a plurality of glass products and the reduction of contact surfaces are realized by the matching of the poke rod and the fixed groove; the movement and stacking of the glass products are realized by the movement of the upper moving part and the lower moving part along the length direction of the frame.

Description

Material rack for automatic stacking of glass

Technical Field

The utility model relates to a glass pile up neatly equipment field especially relates to a work or material rest for automatic pile up neatly of glass.

Background

In the prior art, glass products need to be stacked in a material frame for subsequent storage after being produced, and because the sizes of the glass products are different, the traditional material frame can only manufacture a matched structure to stack the glass products with a single size; in the isolation mode between the glass products, the contact surface of the traditional isolating block, the traditional bearing block and the like to the glass products is large, certain contact pressure is provided for the glass products, and glass deformation and damage are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a can adapt the glass product of multiple specification, the work or material rest that is used for the automatic pile up neatly of glass to the contact surface of glass product when reducing the pile up neatly.

In order to solve the technical problem, the utility model discloses a technical scheme be: a material rack for automatic glass stacking comprises a frame, a lifting assembly, an upper moving piece and a lower moving piece, wherein the upper moving piece and the lower moving piece are arranged in the frame and are opposite up and down, and the lifting assembly drives the upper moving piece to move towards the lower moving piece; the upper moving part and the lower moving part can move along the length direction of the frame, a plurality of spaced poke rods are arranged on the upper moving part, and a plurality of spaced fixing grooves are arranged on the lower moving part.

Furthermore, the lifting assembly comprises a driving motor, a slide rail, a synchronous belt and a rotating wheel, the frame comprises an upright post, the slide rail is arranged on the upright post, the rotating wheel is arranged at one end, away from the upper side of the frame, of the slide rail, a slide block is arranged on the upper moving part, and the slide block is movably matched with the slide rail; the driving motor is arranged on the upper side of the frame, and the synchronous belt is sleeved with the rotating wheel and the output end of the driving motor respectively; the sliding block is fixedly connected with the synchronous belt.

Furthermore, the lifting assembly also comprises four transmission rods and two reversing assemblies, the number of the upright columns is four, and two upright columns are arranged on two sides of the upper moving part; sliding blocks are arranged on two sides of the front end and the rear end of the upper moving part and movably matched with the sliding rails on the adjacent stand columns; the driving motor is arranged in the middle of the upper side of the frame, driving ends extend towards two sides of the driving motor, and the driving ends are in transmission connection with the reversing assembly; the reversing assembly is provided with transmission rods extending from two sides of the upper moving piece in the length direction, and the transmission rods are connected with one end, close to the driving motor, of the synchronous belt.

Further, the lifting assembly further comprises a speed reducer, and the speed reducer is connected with the driving motor.

Furthermore, the upper moving part comprises a first chain and a first driving gear sleeved at two ends of the first chain, and the first chain moves along the length direction of the frame; a plurality of first mounting seats are sleeved on the first chain, and a base is arranged at one end of the poke rod; the base is locked with the first mounting base.

Furthermore, a plurality of the poke rods are obliquely arranged on the first mounting seat, and the inclination of the poke rods faces the length direction of the frame.

Furthermore, guide blocks are convexly arranged on two sides of the base; the upper moving piece further comprises a guide plate, the guide plate is L-shaped, the guide plate comprises a vertical portion and a horizontal portion, the vertical portion is connected between the two first driving gears, and the plurality of guide blocks of the base abut against the horizontal portion.

Further, the first chain is provided with two.

Furthermore, the lower moving part comprises a second chain, a second driving gear and a fixed seat, wherein the second driving gear and the fixed seat are sleeved at two ends of the second chain; and a plurality of second mounting seats are sleeved on the second chain, and the fixed seat is locked with the second mounting seats.

Further, two second chains are arranged; the fixing grooves of the fixing seats connected to the two second chains are inclined to the width direction of the frame, and the fixing grooves of the fixing seats connected to the two second chains are inclined oppositely.

The beneficial effects of the utility model reside in that: the upper moving piece can move towards the lower moving piece through the lifting assembly, so that the specification and the size of stacked glass products between the upper moving piece and the lower moving piece can be adjusted; the upper end and the lower end of the glass product can be respectively positioned between the adjacent poke rods and in the fixed grooves by matching the poke rods and the fixed grooves, so that the isolation of a plurality of glass products and the reduction of contact surfaces are realized; the glass products between the poking rod and the fixed groove are driven by the movement of the upper moving part and the lower moving part along the length direction of the frame, and then the stacking of the next glass product is realized.

Drawings

Fig. 1 is a schematic structural diagram of a rack for automatic stacking of glass according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1A;

FIG. 3 is an enlarged view of FIG. 1B;

fig. 4 is a front view of a rack for automatic stacking of glass according to an embodiment of the present invention;

FIG. 5 is an enlarged view of FIG. 4C;

fig. 6 is a side view of the material rack for automatic stacking of glass according to the embodiment of the present invention.

Description of reference numerals:

1. a frame; 11. a column;

2. a lifting assembly; 21. a drive motor; 22. a slide rail; 23. a synchronous belt; 24. a rotating wheel; 25. a transmission rod; 26. a commutation assembly; 27. a speed reducer;

3. an upper moving member; 31. a first chain; 32. a first drive gear; 33. a first mounting seat; 34. a poke rod; 35. a base; 36. a guide block; 37. a guide plate; 38. a slider;

4. a lower moving member; 41. a second chain; 42. a second drive gear; 43. a second mounting seat; 44. a fixed seat; 45. and fixing the grooves.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 6, a material rack for automatic stacking of glass comprises a frame 1, a lifting assembly 2, an upper moving member 3 and a lower moving member 4, wherein the upper moving member 3 and the lower moving member 4 are arranged in the frame 1, the upper moving member 3 and the lower moving member 4 are opposite to each other up and down, and the lifting assembly 2 drives the upper moving member 3 to move towards the lower moving member 4;

the upper moving part 3 and the lower moving part 4 can move along the length direction of the frame 1, a plurality of spaced poke rods 34 are arranged on the upper moving part 3, and a plurality of spaced fixing grooves 45 are arranged on the lower moving part 4.

From the above description, the beneficial effects of the present invention are: the upper moving part 3 can move towards the lower moving part 4 through the lifting assembly 2, so that the specification and the size of stacked glass products between the upper and lower moving parts 4 can be adjusted; the upper end and the lower end of each glass product can be respectively positioned between the adjacent poke rods 34 and in the fixing grooves 45 by matching the poke rods 34 and the fixing grooves 45, so that the isolation of a plurality of glass products is realized, and the contact surface is reduced; the glass products between the poking rod 34 and the fixing groove 45 are driven by the movement of the upper moving piece 3 and the lower moving piece 4 along the length direction of the frame 1, and then the stacking of the next glass product is realized.

Further, the lifting assembly 2 comprises a driving motor 21, a slide rail 22, a synchronous belt 23 and a rotating wheel 24, the frame 1 comprises an upright post 11, the slide rail 22 is arranged on the upright post 11, the rotating wheel 24 is arranged at one end of the slide rail 22 away from the upper side of the frame 1, a slide block 38 is arranged on the upper moving part 3, and the slide block 38 is movably matched with the slide rail 22; the driving motor 21 is arranged on the upper side of the frame 1, and the synchronous belt 23 is respectively sleeved with the rotating wheel 24 and the output end of the driving motor 21; the slide block 38 is fixedly connected with the timing belt 23.

As can be seen from the above description, the slide rail 22 provided on the upright post 11 of the frame 1 is matched with the slide block 38 of the upper moving member 3, and the driven timing belt 23 pulls the slide block 38 to move up and down along the upright post 11, so as to adjust the interval between the upper moving member 3 and the lower moving member 4 to adapt to glass products with different sizes.

Furthermore, the lifting assembly 2 further comprises four transmission rods 25 and two reversing assemblies 26, the number of the upright columns 11 is four, and two upright columns 11 are arranged on two sides of the upper moving member 3; the two sides of the front end and the rear end of the upper moving part 3 are respectively provided with a sliding block 38, and the sliding blocks 38 can be movably matched with the sliding rails 22 on the adjacent upright posts 11; the driving motor 21 is arranged in the middle of the upper side of the frame 1, driving ends extend towards two sides of the driving motor 21, and the driving ends are in transmission connection with the reversing assembly 26; the reversing assembly 26 is provided with transmission rods 25 extending from both sides of the upper moving member 3 in the length direction, and the transmission rods 25 are connected with one end of the synchronous belt 23 close to the driving motor 21.

As can be seen from the above description, by the arrangement of the multiple sliding blocks 38 on the upper moving member 3, the upper moving member 3 is smoothly moved up and down by the cooperation of the upper moving member 3 and the sliding rails 22 of the four upright posts 11, respectively; by the middle part setting of driving motor 21, the drive end that extends by driving motor 21 and the cooperation of switching-over subassembly 26 and transfer line 25 realize the rational arrangement in frame 1 upside, avoid influencing frame 1 intensity and the synchronization of four hold-in ranges 23 because of arranging the asymmetry.

Further, the lifting assembly 2 further comprises a speed reducer 27, and the speed reducer 27 is connected with the driving motor 21.

As can be seen from the above description, by the cooperation of the speed reducer 27 and the driving motor 21, the smooth transmission of the timing belt 23 is realized to ensure the stability of the up-and-down movement of the upper moving member 3.

Further, the upper moving member 3 includes a first chain 31 and a first driving gear 32 sleeved at two ends of the first chain 31, and the first chain 31 moves along the length direction of the frame 1; a plurality of first mounting seats 33 are sleeved on the first chain 31, and a base 35 is arranged at one end of the poke rod 34; the base 35 is locked with the first mounting seat 33.

As can be seen from the above description, the matching form of the first chain 31 and the first driving gear 32 is adopted, and the first mounting seat 33 on the first chain 31 and the base 35 of the tap lever 34 are locked, so that the tap lever 34 moves along the length direction of the frame 1, and the feeding of the device is realized.

Furthermore, a plurality of the poke rods 34 are obliquely arranged on the first mounting seat 33, and the inclination of the poke rods 34 faces to the length direction of the frame 1.

As can be seen from the above description, the inclined arrangement of the poke rod 34 on the first mounting seat 33 enables the glass product to be inclined due to the inclination of the poke rod 34 when the glass product is placed between the poke rod 34 and the fixing groove 45, so as to lower the gravity center of the glass product and ensure the stability of the glass product stored on the material rack.

Further, guide blocks 36 are convexly arranged on two sides of the base 35; the upper moving member 3 further includes a guide plate 37, the guide plate 37 is L-shaped, the guide plate 37 includes a vertical portion connected between the two first driving gears 32 and a horizontal portion on which the plurality of guide blocks 36 of the base 35 abut.

As can be seen from the above description, the guide block 36 of the base 35 abuts against the horizontal portion of the L-shaped guide plate 37, so that when the first chain 31 moves, the guide block 36 of the base 35 cooperates with the horizontal portion to perform a guiding function, and meanwhile, the situation that the tap lever 34 cannot support the glass product and is pressed down due to the loose locking is avoided, and the horizontal portion abuts against the guide block 36 of the base 35 to perform a certain anti-falling function.

Further, the first chain 31 is provided with two.

As can be seen from the above description, by providing two first chains 31 to abut the glass product by two tap levers 34 at the same time, a stable pushing of the glass product is ensured.

Further, the lower moving member 4 includes a second chain 41, a second driving gear 42 sleeved at two ends of the second chain 41, and a fixing seat 44, wherein the second chain 41 moves along the length direction of the frame 1, and a fixing groove 45 is formed on the fixing seat 44; the second chain 41 is sleeved with a plurality of second mounting seats 43, and the fixing seats 44 are locked with the second mounting seats 43.

As can be seen from the above description, the second chain 41 and the second driving gear 42 are engaged, the second mounting seat 43 on the second chain 41 is locked with the fixing seat 44, the fixing groove 45 in the fixing seat 44 receives the lower end of the glass product, so that the fixing seat 44 moves along the length direction of the frame 1, and the upper moving member 3 is engaged to feed the device.

Further, two second chains 41 are provided; the fixing grooves 45 of the fixing seats 44 connected to the two second chains 41 are inclined with respect to the width direction of the frame 1, and the fixing grooves 45 of the fixing seats 44 connected to the two second chains 41 are inclined with respect to each other.

As can be seen from the above description, the fixing grooves 45 of the fixing seats 44 on the two second chains 41 are arranged to incline toward each other, so that the two sides of the glass product placed between the two fixing grooves 45 can be abutted by the inclined surfaces of the two fixing grooves 45, thereby preventing the glass product from sliding laterally; meanwhile, the two inclined fixing grooves 45 form an approximately triangular structure, so that the placed glass product can move towards the center of the connecting line of the two fixing grooves 45, and the regular positioning of the stacked glass product is realized.

Referring to fig. 1 to 6, a first embodiment of the present invention is:

the utility model discloses an use the scene to do: the traditional glass stacking rack can only be adapted to glass products with single specification and size during stacking, corresponding isolating blocks and bearing blocks need to be customized, and other special racks can only be adopted when different glass products are required to be stacked; in addition, in the isolation mode between the glass products, the contact area between the isolation block and the glass products is large, so that the glass products are easily extruded and damaged.

As shown in fig. 1 to 6, the material rack for automatic stacking of glass according to the embodiment includes a frame 1, a lifting assembly 2, an upper moving member 3 and a lower moving member 4, wherein the lower moving member 4 is disposed on the lower side of the frame 1, the upper moving member 3 is disposed on the upper side of the frame 1, and the lifting assembly 2 is linked with the upper moving member 3 and controls the same to move towards the lower moving member 4; the upper moving part 3 and the lower moving part 4 can move along the length direction of the frame 1, a plurality of spaced poke rods 34 are arranged on the upper moving part 3, and a plurality of spaced fixing grooves 45 are arranged on the lower moving part 4.

As shown in fig. 1, 4 and 6, the lifting assembly 2 includes a driving motor 21, a speed reducer 27, a sliding rail 22, a synchronous belt 23, a rotating wheel 24, four transmission rods 25 and two reversing assemblies 26, the frame 1 includes four columns 11, each column 11 is provided with a sliding rail 22, and one end of the sliding rail 22 away from the upper side of the frame 1 is provided with a rotating wheel 24. Specifically, still include and rotate the seat, it pays on stand 11 to rotate the seat lock, the one end that frame 1 upside was kept away from to slide rail 22 is equipped with convex baffle, it is the L type to rotate the seat, the horizontal part and the baffle butt of rotating the seat, the vertical part of rotating the seat is towards frame 1 downside, the terminal of the vertical part of rotating the seat is rotationally located to the running wheel 24. The locking arrangement of the rotating seat can quickly adjust the position of the rotating seat on the upright post 11 according to the tightness requirement of the synchronous belt 23. Two upright posts 11 are arranged on two sides of the upper moving part 3; and sliding blocks 38 are arranged on two sides of the front end and the rear end of the upper moving part 3, and the sliding blocks 38 are movably matched with the sliding rails 22 on the adjacent upright posts 11.

As shown in fig. 1, the driving motor 21 is disposed in the middle of the upper side of the frame 1, the driving motor 21 is connected to a speed reducer 27, the driving motor 21 has driving ends extending towards both sides thereof, and the driving ends are in transmission connection with a reversing assembly 26; the reversing assembly 26 is provided with transmission rods 25 extending from two sides of the upper moving member 3 in the length direction, the transmission rods 25 are connected with one ends of the synchronous belts 23 close to the driving motor 21, the other ends of the synchronous belts 23 are connected with the rotating wheel 24, and each sliding block 38 is connected with the adjacent synchronous belt 23. The driving motor 21, the driving end, the reversing assembly 26 and the transmission rod 25 are matched to form an H-shaped structure.

As shown in fig. 1 and 2, the upper moving member 3 includes two first chains 31, a first driving gear 32 and a guide plate 37, which are sleeved at two ends of the first chains 31, the two first chains 31 are symmetrically arranged in the frame 1, and the first chains 31 move along the length direction of the frame 1; a plurality of first installation seats 33 are sleeved on the first chain 31, and a base 35 is arranged at one end of the poke rod 34; the base 35 is locked with the first mounting seat 33.

As shown in fig. 6, the plurality of the tap levers 34 are provided to the first mounting base 33 in an inclined manner, and the inclination of the tap levers 34 is directed in the longitudinal direction of the frame 1.

As shown in fig. 2, guide blocks 36 are convexly arranged on two sides of the base 35; the guide plate 37 is L-shaped, and the guide plate 37 includes a vertical portion connected between the two first driving gears 32 and a horizontal portion on which the plurality of guide blocks 36 of the base 35 abut. Specifically, a mounting plate is arranged between the two first driving wheels, the two mounting plates are connected by a connecting frame, two sides of the connecting frame extend to the adjacent upright posts 11, and the sliding blocks 38 are arranged on two sides of the connecting frame; and the guide plate 37 is attached to the mounting plate.

As shown in fig. 1 and 3, the lower moving member 4 includes two second chains 41, a second driving gear 42 sleeved at two ends of the second chains 41, and a fixing seat 44, the two second chains 41 are symmetrically arranged in the frame 1, the second chains 41 move along the length direction of the frame 1, and the fixing seat 44 is provided with a fixing groove 45; the second chain 41 is sleeved with a plurality of second mounting seats 43, and the fixing seats 44 are locked with the second mounting seats 43.

As shown in fig. 4, the fixing grooves 45 of the fixing seats 44 connected to the two second chains 41 are inclined with respect to the width direction of the frame 1, and the fixing grooves 45 of the fixing seats 44 connected to the two second chains 41 are inclined toward each other.

The utility model discloses a theory of operation: before glass products need to be stacked, the driving end of the driving motor 21 is operated to rotate according to the specification and the size of the glass products, and the glass products are reversed by the reversing assembly 26 and then transmitted to the transmission rod 25, so that the synchronous belt 23 moves, the moving synchronous belt 23 drives the sliding block 38 connected with the synchronous belt 23 to move up and down along the sliding rail 22 of the upright post 11, and further the interval between the upper moving part 3 and the lower moving part 4 is adjusted.

Then, the glass products are placed between the poke rod 34 of the upper moving part 3 and the fixing groove 45 of the lower moving part 4 through a mechanical arm and other grabbing devices, and the glass products are brought to the inner side of the device through synchronous rotation of the first chain 31 and the second chain 41 of the upper moving part 3 and the lower moving part 4, so that stacking of the device is achieved.

The upper mover 3 is provided with a guide plate 37 which is matched with a guide block 36 of a base 35 of the tap lever 34, so that the tap lever 34 is moved and guided, and the tap lever 34 can be prevented from being locked loosely and being pressed down by the abutted glass product. Due to the inclined arrangement of the poke rod 34, the center of gravity of the stacked glass products can be lowered, and the glass products are not easy to shake and break away; meanwhile, by combining the arrangement of the poke rod 34 and the fixed groove 45, the contact area between the glass products and the poke rod can be reduced when the glass products are isolated, and the glass products are prevented from being damaged due to compression; two fixed slots 45's slope in opposite directions sets up for the glass product of arranging in between two fixed slots 45 can tend to two fixed slot 45 middle parts and remove, avoids the glass product side direction to deviate from simultaneously.

In summary, the utility model provides a rack for automatic stacking of glass, which enables an upper moving part to move towards a lower moving part through a lifting component, so that the specification and size of stacked glass products between the upper and lower moving parts can be adjusted; the upper end and the lower end of each glass product can be respectively positioned between the adjacent poke rods and in the fixed grooves by matching the poke rods and the fixed grooves, so that the isolation of a plurality of glass products is realized, and the contact surface is reduced; the glass products between the poking rod and the fixed groove are driven by the movement of the upper moving part and the lower moving part along the length direction of the frame, and then the stacking of the next glass product is realized.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The material rack for automatic glass stacking is characterized by comprising a frame, a lifting assembly and a pushing assembly, wherein the pushing assembly comprises an upper moving piece and a lower moving piece, the upper moving piece and the lower moving piece are arranged in the frame and are opposite to each other up and down, and the lifting assembly drives the upper moving piece to move towards the lower moving piece; the upper moving part and the lower moving part can move along the length direction of the frame, a plurality of spaced poking rods are arranged on the upper moving part, and a plurality of spaced fixing grooves are arranged on the lower moving part.

2. The rack for automatically stacking glass according to claim 1, wherein the lifting assembly comprises a driving motor, a slide rail, a synchronous belt and a rotating wheel, the frame comprises an upright post, the upright post is provided with the slide rail, one end of the slide rail, which is far away from the upper side of the frame, is provided with the rotating wheel, the upper moving part is provided with a slide block, and the slide block is movably matched with the slide rail; the driving motor is arranged on the upper side of the frame, and the synchronous belt is sleeved with the rotating wheel and the output end of the driving motor respectively; the sliding block is fixedly connected with the synchronous belt.

3. The rack for automatically stacking glass as claimed in claim 2, wherein the lifting assembly further comprises four transmission rods and two reversing assemblies, the number of the columns is four, and two columns are arranged on two sides of the upper moving member; sliding blocks are arranged on two sides of the front end and the rear end of the upper moving part and movably matched with the sliding rails on the adjacent stand columns; the driving motor is arranged in the middle of the upper side of the frame, driving ends extend towards two sides of the driving motor, and the driving ends are in transmission connection with the reversing assembly; the reversing assembly is provided with transmission rods extending from two sides of the upper moving piece in the length direction, and the transmission rods are connected with one end, close to the driving motor, of the synchronous belt.

4. The rack for automatic stacking of glass as claimed in claim 2, wherein the lifting assembly further comprises a speed reducer connected to a drive motor.

5. The rack for automatically stacking glass as claimed in claim 1, wherein the upper moving member comprises a first chain and a first driving gear sleeved at two ends of the first chain, and the first chain moves along the length direction of the frame; a plurality of first mounting seats are sleeved on the first chain, and a base is arranged at one end of the poke rod; the base is locked with the first mounting seat.

6. The material rack for automatic glass stacking according to claim 5, wherein a plurality of poke rods are obliquely arranged on the first mounting seat, and the inclination of the poke rods faces the length direction of the frame.

7. The rack for automatically stacking glass according to claim 5, wherein guide blocks are convexly arranged on two sides of the base; the upper moving piece further comprises a guide plate, the guide plate is L-shaped, the guide plate comprises a vertical portion and a horizontal portion, the vertical portion is connected between the two first driving gears, and the plurality of guide blocks of the base abut against the horizontal portion.

8. A rack for the automatic stacking of glass according to claim 5, wherein said first chain is provided in two.

9. The rack for automatically stacking glass according to claim 1, wherein the lower moving member comprises a second chain, a second driving gear sleeved at two ends of the second chain, and a fixed seat, the second chain moves along the length direction of the frame, and a fixed groove is formed in the fixed seat; and a plurality of second mounting seats are sleeved on the second chain, and the fixed seat is locked with the second mounting seats.

10. The rack for the automatic stacking of glass according to claim 9, wherein there are two of said second chains; the fixing grooves of the fixing seats connected to the two second chains are inclined to the width direction of the frame, and the fixing grooves of the fixing seats connected to the two second chains are inclined in opposite directions.