CN220392906U - Flexible cable coiling machine - Google Patents

Abstract

The utility model relates to the technical field of coiling machines, in particular to a flexible cable coiling machine which improves the working efficiency, reduces manual operation, ensures better balance during coiling, avoids the inclination condition and improves the working stability; the device comprises a base and a portal frame, wherein the portal frame is arranged at the top end of the base; the device comprises a gantry, a wire coiling device, a driving device, a guiding device, a plurality of groups of first guiding columns and two groups of lifting blocks, wherein the first guiding columns are respectively arranged at the left and right parts of the outer side wall of the gantry, the two groups of lifting blocks are respectively sleeved on the first guiding columns in a sliding manner up and down through the driving device, the wire coiling device is arranged between the outer side walls of the two groups of lifting blocks, the wire coiling device is used for coiling flexible cables, the guiding device is arranged on the outer side wall of the gantry, and the guiding device is used for guiding and conveying the flexible cables during coiling.

Description

Flexible cable coiling machine

Technical Field

The utility model relates to the technical field of coiling machines, in particular to a flexible cable coiling machine.

Background

At present, in the packaging process of flexible cables, the flexible cables need to be wound to be coiled and then aligned for packaging, at present, in the existing flexible cable coiling machine, cantilever type assemblies are generally adopted for coiling the cables, stability is poor, for example, the patent of the utility model with the authority bulletin number of CN206427859U is issued, the coiling machine comprises a machine case, an operation platform is fixedly welded on the upper end face of the machine case, a rotating roller is arranged above the operation platform and is in an inverted circular table shape, a lifting rod is in threaded connection with the upper end face of the rotating roller, the lifting rod is a hydraulic rod, the upper end of the lifting rod is connected with a power device for providing rotating power for the lifting rod, the power device comprises a rotary disc, a conveyor belt and a motor, the rotary disc is fixedly connected with the upper end of the lifting rod through the threads, the rotating power is transmitted between the rotary disc and the motor through the conveyor belt, a support is welded on the upper end face of the machine case, and the motor is fixedly arranged on the support.

But the stability that this equipment was used discovers through lifter counter-rotating rod support is relatively poor to the cable has increased personnel's manual operation's complexity when the coiling, has reduced work efficiency.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the flexible cable coiling machine which improves the working efficiency, reduces manual operation, ensures that the balance is better during coiling, avoids the inclination condition and improves the working stability.

The utility model relates to a flexible cable coiling machine, which comprises a base and a portal frame, wherein the portal frame is arranged at the top end of the base; the device comprises a gantry, a wire coiling device, a driving device, a guiding device, a plurality of groups of first guiding columns and two groups of lifting blocks, wherein the plurality of groups of first guiding columns are respectively arranged at the left and right parts of the outer side wall of the gantry, the two groups of lifting blocks are respectively sleeved on the plurality of groups of first guiding columns through the driving device in a vertical sliding way, the wire coiling device is arranged between the outer side walls of the two groups of lifting blocks, the wire coiling device is used for coiling flexible cables, the guiding device is arranged on the outer side wall of the gantry, and the guiding device is used for guiding and conveying the flexible cables when coiling; the flexible cable is conveyed into the wire coiling device through the guide device, the two groups of lifting blocks are driven to slide upwards through the driving device, the two groups of lifting blocks drive the wire coiling device to move upwards, so that the wire coiling machine coils the flexible cable from bottom to top, the working efficiency is improved, manual operation is reduced, the sliding guide of the plurality of groups of first guide posts on the two groups of lifting blocks is improved, the lifting stability of the two groups of lifting blocks is improved, the lifting blocks are arranged on two sides of the portal frame, the wire coiling device is enabled to be better in balance during lifting, the inclined condition is avoided, and the working stability of the wire coiling machine is improved.

Preferably, the wire coiling device comprises a power device, a reciprocating device, an annular frame, a circular ring, a sliding block, a first motor, a first belt pulley, a second belt pulley, a third belt pulley, a fourth belt pulley, a supporting wheel and two groups of conveying belts, wherein the annular frame is arranged between the outer side walls of the two groups of lifting blocks, the circular ring is rotatably arranged on the inner side wall of the annular frame through the power device, the circular ring is provided with the reciprocating device, the sliding block horizontally moves through the reciprocating device, the first motor is arranged on the outer side wall of the sliding block, the first belt pulley is rotatably arranged on the outer side wall of the sliding block, the output end of the first motor is concentrically connected with the first belt pulley, the second belt pulley is rotatably arranged on the outer side wall of the sliding block, the first group of conveying belts are sleeved on the first belt pulley and the second belt pulley, the third belt pulley, the fourth belt pulley and the supporting wheel are rotatably arranged on the outer side wall of the sliding block, and the positions of the two groups of conveying belts are oppositely arranged up and down; the flexible cable is conveyed to the position between the two groups of conveyor belts through the guide device, when the coiling starts, the synchronous encoder is controlled by the starting photoelectric switch to respectively give signals to the power device and the reciprocating device, so that the power device drives the circular ring to rotate, the reciprocating device drives the sliding block to horizontally reciprocate, then a signal is given to the first motor through the synchronizer, the first motor drives the first belt pulley to rotate, the first belt pulley drives the second belt pulley to rotate through the first group of conveyor belts, the first group of conveyor belts are matched with the cable to drive the second group of conveyor belts to rotate after rotating, the two groups of conveyor belts are matched with each other in a rotating way to pay off the cable, the coiling machine can carry out left and right wire arrangement on the flexible cable to form a coil, when the coiling stops, the power device is interrupted by the stay cord encoder, so that the coiling work is stopped, the working efficiency of the flexible cable forming coil is improved, the complexity of manual operation of personnel is reduced, the cable is conveyed through the matching of the two groups of conveyor belts, the contact area of the cable conveying is increased, the situation of losing or slipping is difficult to occur, and the smoothness of the flexible cable conveying is improved.

Preferably, the guiding device comprises a second guiding column, a bracket, a second guiding wheel, a plurality of groups of third guiding wheels and a plurality of groups of second guiding rods, wherein the second guiding column is arranged on the right side wall of the portal frame, the bracket slides up and down through a traction component and is rotationally sleeved on the outer side wall of the second guiding column, the second guiding wheel is arranged on the outer side wall of the bracket, the plurality of groups of third guiding wheels are respectively matched and arranged on the outer side wall of the portal frame, the plurality of groups of second guiding rods are respectively arranged on the portal frame and the outer side wall of the bracket, and the positions of the plurality of groups of second guiding rods are matched with the positions of the second guiding wheels and the positions of the plurality of groups of third guiding wheels; the flexible cables are guided and conveyed between the two groups of conveyor belts through the cooperation of the second guide wheels, the multiple groups of third guide wheels and the multiple groups of second guide rods, so that the convenience of conveying the flexible cables is improved, and the fluency of conveying the flexible cables is improved.

Preferably, the reciprocating device comprises a third guide post, a fixed seat, a screw rod and a second motor, wherein the third guide post is arranged on the outer side wall of the circular ring, the sliding block is sleeved on the outer side wall of the third guide post in a sliding way, the fixed seat is arranged on the outer side wall of the third guide post, the screw rod is rotatably arranged on the outer side wall of the fixed seat, the sliding block is matched with the screw rod to be screwed on the outer side wall of the screw rod, the second motor is arranged on the outer side wall of the fixed seat, and the output end of the second motor is concentrically connected with the screw rod; and the second motor is turned on to drive the screw rod to rotate, and the slide block is driven to move after the screw rod rotates, so that the convenience of coiling the flexible cable is improved.

Preferably, the power device comprises a belt and a third motor, one end of the belt is sleeved on the outer side wall of the circular ring, the third motor is installed on the outer side wall of the circular frame, the output end of the third motor is provided with a driving wheel, and the other end of the belt is sleeved on the driving wheel; the third motor is turned on to drive the driving wheel to rotate, so that the driving wheel drives the circular ring to rotate through the belt.

Preferably, the driving device comprises a reel, traction ropes and a fourth motor, the reel is rotatably arranged on the inner side wall of the portal frame, the top ends of the two groups of traction ropes are connected with the outer side wall of the reel, the bottom ends of the two groups of traction ropes are respectively connected with the two groups of lifting blocks, the fourth motor is arranged on the outer side wall of the portal frame, and the output end of the fourth motor is concentrically connected with the reel; and the fourth motor is opened to drive the reel to rotate, and the reel is wound or unwound for the two groups of traction ropes after rotating, so that the lifting and sliding convenience of the two groups of lifting blocks is improved.

Preferably, the multifunctional electric bicycle further comprises a plurality of groups of universal wheels, and the universal wheels are arranged at the bottom end of the base; the convenience of the movement of the disk forming machine is improved.

Compared with the prior art, the utility model has the beneficial effects that: through setting up the slip direction of multiunit first guide post to two sets of lifting blocks, improve the stability that two sets of lifting blocks go up and down, through setting up the lifting block in portal frame both sides, the equilibrium is better when making the dish line device go up and down, avoids the condition of slope, improves the work stationarity of a dish machine.

Drawings

FIG. 1 is a schematic illustration of an axially measured structure of the present utility model;

FIG. 2 is a schematic illustration of a partial structure of an axial measurement of the connection of a ring frame with a circular ring or the like;

FIG. 3 is a schematic illustration of an isometric structure of a base to gantry connection, etc.;

FIG. 4 is a schematic illustration of a portion of an axial structure of a bracket coupled to a second guide wheel or the like;

the reference numerals in the drawings: 1. a base; 2. a portal frame; 3. a first guide post; 4. a lifting block; 5. an annular frame; 6. a circular ring; 7. a slide block; 8. a first motor; 9. a first pulley; 10. a second pulley; 11. a second guide post; 12. a bracket; 13. the second guide wheel; 14. a third guide wheel; 15. a second guide bar; 16. a third guide post; 17. a fixing seat; 18. a screw rod; 19. a second motor; 20. a belt; 21. a third motor; 22. a reel; 23. a traction rope; 24. a fourth motor; 25. a universal wheel; 26. a third pulley; 27. a fourth pulley; 28. a support wheel; 29. a conveyor belt.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Example 1

As shown in fig. 1 to 4, the flexible cable coiling machine comprises a base 1 and a portal frame 2, wherein the portal frame 2 is arranged at the top end of the base 1; the device comprises a gantry 2, a wire coiling device, a driving device, a guiding device, a plurality of groups of first guiding columns 3 and two groups of lifting blocks 4, wherein the plurality of groups of first guiding columns 3 are respectively arranged at the left and right parts of the outer side wall of the gantry 2, the two groups of lifting blocks 4 are respectively sleeved on the plurality of groups of first guiding columns 3 in a sliding way up and down through the driving device, the wire coiling device is arranged between the outer side walls of the two groups of lifting blocks 4, the wire coiling device is used for coiling flexible cable, the guiding device is arranged on the outer side wall of the gantry 2, and the guiding device is used for guiding and conveying the flexible cable when coiling;

as shown in fig. 2, the wire coiling device comprises a power device, a reciprocating device, an annular frame 5, a circular ring 6, a sliding block 7, a first motor 8, a first belt pulley 9, a second belt pulley 10, a third belt pulley 26, a fourth belt pulley 27, a supporting wheel 28 and two groups of conveying belts 29, wherein the annular frame 5 is arranged between the outer side walls of the two groups of lifting blocks 4, the circular ring 6 is rotatably arranged on the inner side wall of the annular frame 5 through the power device, the circular ring 6 is provided with the reciprocating device, the sliding block 7 horizontally moves through the reciprocating device, the first motor 8 is arranged on the outer side wall of the sliding block 7, the first belt pulley 9 is rotatably arranged on the outer side wall of the sliding block 7, the output end of the first motor 8 is concentrically connected with the first belt pulley 9, the second belt pulley 10 is rotatably arranged on the outer side wall of the sliding block 7, the first group of conveying belts 29 are sleeved on the first belt pulley 9 and the second belt pulley 10, the third belt pulley 26, the fourth belt pulley 27 and the supporting wheel 28 are rotatably arranged on the outer side wall of the sliding block 7, the second group of conveying belts 29 are sleeved on the third belt pulley 26, the fourth belt pulley 27 and the supporting wheel 28, and the two groups of conveying belts 29 are oppositely arranged at the upper and lower positions are oppositely arranged;

in this embodiment, get into on the dish line device with the flexible cable through guider's transport, drive two sets of elevating block 4 upwards slide simultaneously through drive arrangement, two sets of elevating block 4 drive dish line device upwards remove, thereby make the dish machine coil into the dish with the flexible cable from down upwards, improve work efficiency, reduce manual operation, through setting up the slip direction of multiunit first guide post 3 to two sets of elevating block 4, improve the stability that two sets of elevating block 4 go up and down, through setting up elevating block 4 in portal frame 2 both sides, the equilibrium is better when making a dish line device go up and down, avoid the condition of slope, improve the operational stability of dish machine.

Example 2

As shown in fig. 1 to 4, the flexible cable coiling machine comprises a base 1 and a portal frame 2, wherein the portal frame 2 is arranged at the top end of the base 1; the device comprises a gantry 2, a wire coiling device, a driving device, a guiding device, a plurality of groups of first guiding columns 3 and two groups of lifting blocks 4, wherein the plurality of groups of first guiding columns 3 are respectively arranged at the left and right parts of the outer side wall of the gantry 2, the two groups of lifting blocks 4 are respectively sleeved on the plurality of groups of first guiding columns 3 in a sliding way up and down through the driving device, the wire coiling device is arranged between the outer side walls of the two groups of lifting blocks 4, the wire coiling device is used for coiling flexible cable, the guiding device is arranged on the outer side wall of the gantry 2, and the guiding device is used for guiding and conveying the flexible cable when coiling;

as shown in fig. 2, the wire coiling device comprises a power device, a reciprocating device, an annular frame 5, a circular ring 6, a sliding block 7, a first motor 8, a first belt pulley 9, a second belt pulley 10, a third belt pulley 26, a fourth belt pulley 27, a supporting wheel 28 and two groups of conveying belts 29, wherein the annular frame 5 is arranged between the outer side walls of the two groups of lifting blocks 4, the circular ring 6 is rotatably arranged on the inner side wall of the annular frame 5 through the power device, the circular ring 6 is provided with the reciprocating device, the sliding block 7 horizontally moves through the reciprocating device, the first motor 8 is arranged on the outer side wall of the sliding block 7, the first belt pulley 9 is rotatably arranged on the outer side wall of the sliding block 7, the output end of the first motor 8 is concentrically connected with the first belt pulley 9, the second belt pulley 10 is rotatably arranged on the outer side wall of the sliding block 7, the first group of conveying belts 29 are sleeved on the first belt pulley 9 and the second belt pulley 10, the third belt pulley 26, the fourth belt pulley 27 and the supporting wheel 28 are rotatably arranged on the outer side wall of the sliding block 7, the second group of conveying belts 29 are sleeved on the third belt pulley 26, the fourth belt pulley 27 and the supporting wheel 28, and the two groups of conveying belts 29 are oppositely arranged at the upper and lower positions are oppositely arranged;

as shown in fig. 1, the guiding device comprises a second guiding column 11, a bracket 12, a second guiding wheel 13, a plurality of groups of third guiding wheels 14 and a plurality of groups of second guiding rods 15, wherein the second guiding column 11 is installed on the right side wall of the portal frame 2, the bracket 12 is sleeved on the outer side wall of the second guiding column 11 in a sliding and rotating way through a traction assembly, the second guiding wheel 13 is installed on the outer side wall of the bracket 12, the plurality of groups of third guiding wheels 14 are respectively installed on the outer side wall of the portal frame 2 in a matching way, the plurality of groups of second guiding rods 15 are respectively installed on the portal frame 2 and the outer side wall of the bracket 12, and the positions of the plurality of groups of second guiding rods 15 are matched with the positions of the second guiding wheels 13 and the plurality of groups of third guiding wheels 14;

as shown in fig. 2, the reciprocating device comprises a third guide post 16, a fixed seat 17, a screw rod 18 and a second motor 19, wherein the third guide post 16 is installed on the outer side wall of the circular ring 6, the sliding block 7 is slidably sleeved on the outer side wall of the third guide post 16, the fixed seat 17 is installed on the outer side wall of the third guide post 16, the screw rod 18 is rotatably installed on the outer side wall of the fixed seat 17, the sliding block 7 is matched and screwed on the outer side wall of the screw rod 18, the second motor 19 is installed on the outer side wall of the fixed seat 17, and the output end of the second motor 19 is concentrically connected with the screw rod 18;

as shown in fig. 2, the power device comprises a belt 20 and a third motor 21, one end of the belt 20 is sleeved on the outer side wall of the circular ring 6, the third motor 21 is mounted on the outer side wall of the annular frame 5, the output end of the third motor 21 is provided with a driving wheel, and the other end of the belt 20 is sleeved on the driving wheel;

as shown in fig. 1, the driving device comprises a scroll 22, traction ropes 23 and a fourth motor 24, the scroll 22 is rotatably installed on the inner side wall of the portal frame 2, the top ends of the two groups of traction ropes 23 are connected with the outer side wall of the scroll 22, the bottom ends of the two groups of traction ropes 23 are respectively connected with the two groups of lifting blocks 4, the fourth motor 24 is installed on the outer side wall of the portal frame 2, and the output end of the fourth motor 24 is concentrically connected with the scroll 22;

as shown in fig. 1, the device further comprises a plurality of groups of universal wheels 25, wherein the plurality of groups of universal wheels 25 are all arranged at the bottom end of the base 1;

in this embodiment, the flexible cable is conveyed between the two groups of conveyor belts 29 through the guiding device, when the coiling starts, the synchronous encoder is controlled by starting the photoelectric switch to respectively give a signal to the power device and the reciprocating device, so that the power device drives the circular ring 6 to rotate, the reciprocating device drives the sliding block 7 to horizontally reciprocate, then a signal is given to the first motor 8 through the synchronizer, the first motor 8 drives the first belt pulley 9 to rotate, the first belt pulley 9 drives the second belt pulley 10 through the first group of conveyor belts 29, the first group of conveyor belts 29 are matched with the cable to drive the second group of conveyor belts 29 to rotate after rotating, the two groups of conveyor belts 29 are matched with the cable to pay off the cable in a rotating manner, the coiling machine is enabled to carry out left and right wire arrangement on the flexible cable to coil the flexible cable, when the coiling stops, the power device is interrupted by the power distribution signal through the pull rope encoder, so that the coiling work is stopped, the working efficiency of the flexible cable coiling is improved, the complexity of manual operation of personnel is reduced, the contact area of the cable conveying is increased when the two groups of conveyor belts 29 are matched to drive the cable conveying, the flexible cable conveying is not easy to lose or slip is avoided, and the smoothness of the flexible cable conveying is improved.

When the flexible cable coiling machine works, the flexible cable is conveyed between two groups of conveying belts 29 through the guide device, the driving device drives the two groups of lifting blocks 4 to slide upwards when coiling starts, the two groups of lifting blocks 4 drive the annular frame to move upwards, the photoelectric switch is started to control the synchronous encoder to respectively give a signal to the power device and the reciprocating device, the power device drives the annular 6 to rotate, the reciprocating device drives the sliding block 7 to horizontally reciprocate, then the synchronizer gives a signal to the first motor 8, the first motor 8 drives the first belt pulley 9 to rotate, the first belt pulley 9 drives the second belt pulley 10 to rotate through the first group of conveying belts 29, the first group of conveying belts 29 are matched with the cable to drive the second group of conveying belts 29 to rotate after rotating, and the two groups of conveying belts 29 are matched with the cable to pay off the cable, so that the coiling machine can carry out left and right wire arrangement on the flexible cable to coil.

The first motor 8, the second motor 19, the third motor 21 and the fourth motor 24 of the flexible cable coiling machine are purchased in the market, and a person skilled in the art only needs to install and operate according to the attached using instruction without creative labor of the person skilled in the art.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (7)

1. A flexible cable coiling machine comprises a base (1) and a portal frame (2), wherein the portal frame (2) is arranged at the top end of the base (1); the flexible cable coiling device is characterized by further comprising a coiling device, a driving device, a guiding device, a plurality of groups of first guiding columns (3) and two groups of lifting blocks (4), wherein the plurality of groups of first guiding columns (3) are respectively arranged on the left and right parts of the outer side wall of the portal frame (2), the two groups of lifting blocks (4) are respectively sleeved on the plurality of groups of first guiding columns (3) through the driving device in a vertically sliding manner, the coiling device is arranged between the outer side walls of the two groups of lifting blocks (4), the coiling device is used for coiling flexible cable coiling, the guiding device is arranged on the outer side wall of the portal frame (2), and the guiding device is used for guiding and conveying the flexible cable coiling.

2. A flexible cable coiling machine as in claim 1 wherein the coiling device comprises a power device, a reciprocating device, a ring frame (5), a circular ring (6), a slide block (7), a first motor (8), a first belt pulley (9), a second belt pulley (10), a third belt pulley (26), a fourth belt pulley (27), a supporting wheel (28) and two groups of conveyor belts (29), the ring frame (5) is mounted between the outer side walls of the two groups of lifting blocks (4), the circular ring (6) is rotatably mounted on the inner side wall of the ring frame (5) through the power device, the reciprocating device is arranged on the circular ring (6), the slide block (7) is horizontally moved through the reciprocating device, the first motor (8) is mounted on the outer side wall of the slide block (7), the first belt pulley (9) is rotatably mounted on the outer side wall of the slide block (7), the output end of the first motor (8) is concentrically connected with the first belt pulley (9), the second belt pulley (10) is rotatably mounted on the outer side wall of the slide block (7), the first group of conveyor belts (29) are sleeved on the first belt pulley (9) and the third belt pulley (26) are rotatably mounted on the outer side wall of the slide block (7) The fourth belt pulley (27) and the supporting wheel (28) are arranged on the upper and lower opposite positions of the two groups of conveyor belts (29).

3. A flexible cable coiling machine as in claim 1, wherein the guiding device comprises a second guiding column (11), a bracket (12), a second guiding wheel (13), a plurality of groups of third guiding wheels (14) and a plurality of groups of second guiding rods (15), the second guiding column (11) is arranged on the right side wall of the portal frame (2), the bracket (12) is sleeved on the outer side wall of the second guiding column (11) in a sliding and rotating way through a traction component, the second guiding wheel (13) is arranged on the outer side wall of the bracket (12), the plurality of groups of third guiding wheels (14) are respectively matched and arranged on the outer side walls of the portal frame (2) and the outer side walls of the bracket (12), and the plurality of groups of second guiding rods (15) are respectively arranged on the positions of the second guiding wheels (13) and the plurality of groups of third guiding wheels (14) in a matching way.

4. A flexible cable coiling machine as in claim 2, wherein the reciprocating means comprises a third guide post (16), a fixed seat (17), a lead screw (18) and a second motor (19), the third guide post (16) is mounted on the outer side wall of the circular ring (6), the sliding block (7) is slidingly sleeved on the outer side wall of the third guide post (16), the fixed seat (17) is mounted on the outer side wall of the third guide post (16), the lead screw (18) is rotatably mounted on the outer side wall of the fixed seat (17), the sliding block (7) is matched and screwed on the outer side wall of the lead screw (18), the second motor (19) is mounted on the outer side wall of the fixed seat (17), and the output end of the second motor (19) is concentrically connected with the lead screw (18).

5. A flexible cable coiling machine as in claim 2 wherein the power means comprises a belt (20) and a third motor (21), one end of the belt (20) is sleeved on the outer side wall of the circular ring (6), the third motor (21) is mounted on the outer side wall of the annular frame (5), the output end of the third motor (21) is provided with a driving wheel, and the other end of the belt (20) is sleeved on the driving wheel.

6. A flexible cable coiling machine as in claim 1, wherein the driving device comprises a scroll (22), traction ropes (23) and a fourth motor (24), the scroll (22) is rotatably mounted on the inner side wall of the portal frame (2), the top ends of the two groups of traction ropes (23) are connected with the outer side wall of the scroll (22), the bottom ends of the two groups of traction ropes (23) are respectively connected with the two groups of lifting blocks (4), the fourth motor (24) is mounted on the outer side wall of the portal frame (2), and the output end of the fourth motor (24) is concentrically connected with the scroll (22).

7. A flexible cable coiling machine as in claim 1 further comprising a plurality of sets of universal wheels (25), wherein the plurality of sets of universal wheels (25) are mounted at the bottom end of the base (1).