Grabbing manipulator for all-steel radial tire production

Abstract

The invention relates to the technical field of tire grabbing mechanical arms, in particular to a grabbing mechanical arm for all-steel radial tire production, which comprises a moving machine base, a control table, a moving assembly and a grabbing assembly, the two moving assemblies are symmetrically arranged on the moving machine base and used for controlling the moving machine base to move, and the grabbing assembly is movably arranged on the moving machine base and used for grabbing tires and adjusting the positions of the tires. Compared with a traditional grabbing mechanical arm, a traditional single clamping mode is eliminated, the clamping stability of the large-size tire can be improved by clamping the tire in two directions, and the safety of the tire in the clamping and transporting process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of tire grasping manipulators, and more specifically, to a grasping manipulator for the production of all-steel radial tires. Background Art

[0002] An all-steel radial tire is defined as a tire in which the carcass cords are arranged in the meridian direction (arranged at 90° or close to 90° to the crown center line), and there is a belt layer that tightly binds the carcass with the cords arranged almost close to the circumferential direction. Such tires are called radial tires. This is also the fundamental difference between radial tires and bias tires.

[0003] During the production process of radial tires, it is necessary to use a grasping manipulator to carry the produced tires. The existing grasping manipulators still use a traditional and simple clamping structure to clamp and carry the tires. This method of imitating the human finger to clamp and transport the side of the tire is prone to the phenomenon that the tire falls from a height due to low clamping stability when clamping and fixing large-volume and heavy tires, and the risk factor is relatively high. Summary of the Invention

[0004] The purpose of the present invention is to provide a grasping manipulator for the production of all-steel radial tires to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A grasping manipulator for the production of all-steel radial tires includes a moving base and a control console. The control console is arranged on the base. The grasping manipulator further includes a moving component and a grasping component. The number of the moving components is two groups and they are symmetrically arranged on the moving base and used to control the movement of the moving base. The grasping component is movably arranged on the moving base and used to grasp the tire and adjust the position of the tire.

[0007] The grasping component includes a grasping mounting seat, a driving motor, a threaded rod, an adjusting member, an orientation adjusting member, and a clamping module. The mounting seat is movably arranged on the moving base. The orientation adjusting member is arranged on the mounting seat and used to adjust the orientation of the mounting seat. The adjusting member is arranged on the moving base and connected to the grasping mounting seat and used to adjust the position of the grasping mounting seat. The threaded rod is movably arranged on the grasping mounting seat. The driving motor is arranged on the grasping mounting seat and its output end is connected to the threaded rod. The clamping module is movably arranged on the grasping mounting seat and is in threaded cooperation with the threaded rod.

[0008] A further technical solution of the present application: The orientation adjusting member includes a steering base and a plurality of steering wheels. The steering base is movably arranged on the moving base. The grasping mounting seat is connected to the steering base. The plurality of steering wheels are movably arranged on the steering base.

[0009] A further technical solution of the present application: the positioning component includes a mounting ring seat, a guide groove and a No. 2 electric telescopic rod, the mounting ring seat is movably arranged on a through groove formed on the mobile base, the mounting ring seat is sleeved on the outer side of the grabbing mounting seat, and a guide groove is formed on the inner wall of the mounting ring seat that slides with the grabbing mounting seat, the No. 2 electric telescopic rod is arranged on the mobile base and its movable end is connected to the mounting ring seat.

[0010] A further technical solution of the present application is as follows: the clamping module includes a lifting seat and two sets of limiting structures, the lifting seat is movably arranged on a grabbing mounting seat, the threaded rod slides through the lifting seat and the two are threadedly matched, the two sets of limiting structures are symmetrically arranged on the lifting seat, and the limiting structures are used to clamp and fix the tire.

[0011] The present application has a further technical solution: the limiting structure includes a contact plate, a No. 3 electric telescopic rod, a mobile mounting plate, a No. 3 electric telescopic rod and an execution unit, the mobile mounting plate is movably arranged on the lifting seat, the No. 3 electric telescopic rod is arranged on the lifting seat and its movable end is connected to the mobile mounting plate, the contact plate is movably arranged on the mobile mounting plate and the two are elastically connected, the execution unit is arranged on the mobile mounting plate, and the execution units on two adjacent mobile mounting plates are started and work when they meet, and the execution unit performs clamping and fixing of the inner side of the tire.

[0012] The present application has a further technical solution: a plurality of resistance-increasing protrusions are arranged around the contact plate.

[0013] The present application has a further technical solution: the execution unit includes a moving rod, a sleeve, a tailstock and several groups of limit members, the sleeve is arranged between a moving mounting plate and a contact plate, the sleeve is connected to the moving mounting plate through the tailstock, a moving block is movably arranged in a mounting cavity formed in the sleeve, one end of the moving rod is slidably inserted in the mounting cavity and connected to the moving block, the moving block and the sleeve are elastically connected, a guide groove is provided on the sleeve that slides with the moving block, several groups of limit members are arranged on the outer wall of the sleeve, and when the moving rod moves relative to the sleeve, the limit member is controlled to expand and contact with the inner side of the tire, and a cross groove is provided on the contact plate that slides with the limit rod.

[0014] A further technical solution of the present application is as follows: the limit member includes a guide seat, a limit rod and a driving arm, the guide seat is arranged on the outer wall of one end of the sleeve close to the tail seat, the limit rod is movably arranged on the guide seat and the two are elastically connected, and the driving arm is movably connected between the limit rod and the moving block.

[0015] A further technical solution of the present application is as follows: a guide rail is arranged on the limit rod, a buffer block is movably arranged in the guide rail, the buffer block is connected to the limit rod through a spring, and the driving arm is movably arranged between the buffer block and the moving block.

[0016] A further technical solution of the present application is as follows: the mobile assembly includes a displacement power seat, a moving wheel, a lifting plate, a push arm, a slider and a No. 1 electric telescopic rod. The displacement power seat is in a group and is symmetrically and movably arranged on both sides of the moving base. The lifting plate is movably arranged on a matching groove formed on the moving base and is connected to the displacement power seat. The slider is movably arranged on the moving base and is movably connected through the push arm and the lifting plate. Several moving wheels are equidistantly and movably arranged on each of the displacement power seats. The No. 1 electric telescopic rod is arranged on the moving base and its movable end is connected to the slider.

[0017] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0018] The embodiment of the present invention sets a gripping assembly, uses a No. 3 electric telescopic rod to control the movement of the movable mounting plates toward each other so that the movable rods contact each other, controls the limit rod to automatically unfold, thereby automatically and adaptively clamping and fixing tires with different inner diameters, and can also use the contact plate to clamp and fix the side of the tire at the same time, thereby achieving two different clamping effects on the tire. Compared with traditional gripping manipulators, this device gets rid of the traditional single clamping method. The device clamps the tire in two directions, which can improve the clamping stability of large-size tires and ensure the safety of the tire during clamping and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a gripping manipulator for producing all-steel radial tires in an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a moving component in a grabbing manipulator for producing all-steel radial tires according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a grabbing assembly in a grabbing robot for producing all-steel radial tires in an embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a clamping module in a gripping robot for producing all-steel radial tires in an embodiment of the present invention;

[0023] Figure 5 This is a schematic structural diagram of a limiting structure in a grabbing robot for producing all-steel radial tires according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the execution unit in the gripper robot for the production of all-steel radial tires in the embodiments of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the limit member in the gripper robot for the production of all-steel radial tires in the embodiments of the present invention;

[0026] Figure 8 This is a half-sectional view of the sleeve in the gripper robot for the production of all-steel radial tires in the embodiments of the present invention.

[0027] Explanation of the reference numerals in the schematic diagram:

[0028] 1 - Mobile base, 2 - Displacement power seat, 3 - Mobile wheel, 4 - Lifting plate, 5 - Pushing arm, 6 - Slide block, 7 - First electric telescopic rod, 8 - Second electric telescopic rod, 9 - Mounting ring seat, 10 - Guide groove, 11 - Through groove, 12 - Gripping mounting seat, 13 - Driving motor, 14 - Console, 15 - Threaded rod, 16 - Steering base, 17 - Steering wheel, 18 - Lifting seat, 19 - Mobile mounting plate, 20 - Third electric telescopic rod, 21 - Contact plate, 22 - Guide groove, 23 - Resistance increasing protrusion, 24 - Mobile rod, 25 - Sleeve, 26 - Tail seat, 27 - Limit rod, 28 - Guide rail, 29 - Buffer block, 30 - Spring, 31 - Driving arm, 32 - Guide groove, 33 - Mounting cavity, 34 - Mobile block, 35 - Fitting groove. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The present invention will be further described below in conjunction with the embodiments.

[0030] Please refer to Figures 1-8 , in an embodiment of the present application, a gripper robot for the production of all-steel radial tires includes a mobile base 1 and a console 14. The console 14 is arranged on the base. The gripper robot further includes a mobile component and a gripping component. The number of the mobile components is two groups and they are symmetrically arranged on the mobile base 1 for controlling the movement of the mobile base 1. The gripping component is movably arranged on the mobile base 1 for gripping the tire and adjusting the position of the tire;

[0031] The grasping assembly includes a grasping mounting base 12, a driving motor 13, a threaded rod 15, an adjusting member, an aligning member, and a clamping module. The mounting base is movably arranged on the moving base 1. The aligning member is arranged on the mounting base and is used for adjusting the orientation of the mounting base. The adjusting member is arranged on the moving base 1 and is connected to the grasping mounting base 12 for adjusting the position of the grasping mounting base 12. The threaded rod 15 is movably arranged on the grasping mounting base 12. The driving motor 13 is arranged on the grasping mounting base 12 and its output end is connected to the threaded rod 15. The clamping module is movably arranged on the grasping mounting base 12 and is in threaded cooperation with the threaded rod 15.

[0032] In a specific case of this embodiment, the aligning member includes a steering base 16 and a plurality of steering wheels 17. The steering base 16 is movably arranged on the moving base 1. The grasping mounting base 12 is connected to the steering base 16. A plurality of the steering wheels 17 are movably arranged on the steering base 16.

[0033] In another specific case of this embodiment, the adjusting member includes a mounting ring seat 9, a guide groove 10, and a second electric telescopic rod 8. The mounting ring seat 9 is movably arranged on a through groove 11 formed on the moving base 1. The mounting ring seat 9 is sleeved outside the grasping mounting base 12. A guide groove 10 that is slidably matched with the grasping mounting base 12 is formed on the inner wall of the mounting ring seat 9. The second electric telescopic rod 8 is arranged on the moving base 1 and its movable end is connected to the mounting ring seat 9.

[0034] During actual application, the entire device is moved to the working position by the moving assembly. By controlling the clamping module to work, the tire can be grasped and clamped. Then, the driving motor 13 is controlled to be energized and rotate through the control console 14, driving the threaded rod 15 to rotate. Under the action of the threaded cooperation between the threaded rod 15 and the clamping module, the clamping module is driven to move vertically along the grasping mounting base 12, thereby raising the tire. Then, the steering wheels 17 are controlled to work to drive the steering base 16 and the grasping mounting base 12 to rotate, so that the tire follows the grasping mounting base 12 to turn 180°. Then, the second electric telescopic rod 8 is controlled to contract, driving the mounting ring seat 9 to move, thereby driving the grasping mounting base 12 to move horizontally, so as to be able to transport the tire from one side of the moving base 1 to the other side, realizing the grasping work of the tire.

[0035] Please refer to Figures 1-8 , as another preferred embodiment of this application, the clamping module includes a lifting seat 18 and two groups of limiting structures. The lifting seat 18 is movably arranged on the grasping mounting base 12. The threaded rod 15 slidably penetrates through the lifting seat 18 and the two are in threaded cooperation. The two groups of limiting structures are symmetrically arranged on the lifting seat 18. The limiting structures are used for clamping and fixing the tire.

[0036] In a specific case of the present embodiment, the limiting structure includes a contact plate 21, a No. 3 electric telescopic rod 20, a movable mounting plate 19, a No. 3 electric telescopic rod 20 and an execution unit, the movable mounting plate 19 is movably arranged on the lifting seat 18, the No. 3 electric telescopic rod 20 is arranged on the lifting seat 18 and its movable end is connected to the movable mounting plate 19, the contact plate 21 is movably arranged on the movable mounting plate 19 and the two are elastically connected, the execution unit is arranged on the movable mounting plate 19, and the execution units on two adjacent movable mounting plates 19 are started and work when they meet, and the execution unit performs clamping and fixing of the inner side of the tire.

[0037] In another specific case of this embodiment, a plurality of resistance-increasing protrusions 23 are arranged around the contact plate 21 .

[0038] When the tire is being grabbed, the No. 3 electric telescopic rod 20 is controlled to extend, driving the movable mounting plate 19, the contact plate 21 and the execution unit to move toward the tire, and the contact plate 21 and the side of the tire come into contact to achieve the clamping of the side of the tire, and when the execution units are controlled to meet, the execution units can be controlled to work and clamp and fix the inner side of the tire, and the drive motor 13 is controlled to work to drive the threaded rod 15 to rotate, thereby driving the lifting seat 18 and the tire to move up along the grabbing mounting seat 12, thereby achieving the adjustment of the position of the tire.

[0039] See also Figures 1-8 As another preferred embodiment of the present application, the execution unit includes a moving rod 24, a sleeve 25, a tailstock 26 and several groups of limiting members. The sleeve 25 is arranged between the moving mounting plate 19 and the contact plate 21, and the sleeve 25 is connected to the moving mounting plate 19 through the tailstock 26. A moving block 34 is movably arranged in the mounting cavity 33 formed in the sleeve 25. One end of the moving rod 24 is slidably inserted in the mounting cavity 33 and connected to the moving block 34. The moving block 34 is elastically connected to the sleeve 25. The sleeve 25 is provided with a guide groove 32 that slidably cooperates with the moving block 34. Several groups of limiting members are arranged on the outer wall of the sleeve 25. When the moving rod 24 moves relative to the sleeve 25, the limiting member is controlled to be unfolded and to contact the inner side of the tire. The contact plate 21 is provided with a cross groove 22 that slidably cooperates with the limiting rod 27.

[0040] In a specific case of this embodiment, the limiting member includes a guide seat, a limiting rod 27 and a driving arm 31. The guide seat is arranged on the outer wall of one end of the sleeve 25 close to the tail seat 26. The limiting rod 27 is movably arranged on the guide seat and the two are elastically connected. The driving arm 31 is movably connected between the limiting rod 27 and the moving block 34.

[0041] In another specific case of this embodiment, a guide rail 28 is provided on the limit rod 27, a buffer block 29 is movably provided in the guide rail 28, the buffer block 29 is connected to the limit rod 27 through a spring 30, and the driving arm 31 is movably provided between the buffer block 29 and the moving block 34.

[0042] It should be supplemented that the mobile assembly includes a displacement power seat 2, a moving wheel 3, a lifting plate 4, a push arm 5, a slider 6 and a No. 1 electric telescopic rod 7. The displacement power seat 2 is in a group and is symmetrically and movably arranged on both sides of the mobile base 1. The lifting plate 4 is movably arranged on a matching groove 35 formed on the mobile base 1 and is connected to the displacement power seat 2. The slider 6 is movably arranged on the mobile base 1 and is movably connected to the lifting plate 4 through the push arm 5. A number of moving wheels 3 are equidistantly and movably arranged on each of the displacement power seats 2. The No. 1 electric telescopic rod 7 is arranged on the mobile base 1 and its movable end is connected to the slider 6.

[0043] In such Figure 1 When the vehicle is in the state shown, the whole device is stably placed on the ground with high stability. When the whole device needs to be moved to the next transport position, the No. 1 electric telescopic rod 7 is controlled to be energized and retracted, thereby driving the slider 6 to move. Under the action of the push arm 5, the lifting plate 4 and the displacement power seat 2 can be driven to move downward, so that the moving wheel 3 contacts the ground and lifts the moving machine base 1, which is convenient for moving the whole device. The No. 3 electric telescopic rod 20 controls the two relative moving rods 24 to move toward each other, so that the moving rods 24 conflict with each other, and the moving rod 24 and the moving block 34 move relative to the sleeve 25. Under the action of the driving arm 31, the limit rod 27 is driven to expand relative to the sleeve 25 and finally conflict with the inner side of the tire to achieve the clamping and fixing work of the inner side of the tire. In addition, by setting the spring 30, the buffer block 29 and the guide rail 28, the buffering work when the moving rod 24 conflicts can be achieved, and the clamping and fixing work of tires with different inner diameters can be achieved.

[0044] How this application works:

[0045] In such Figure 1In the state shown, the entire device is stably placed on the ground with high stability. When it is necessary to move the entire device to the next handling position, by controlling the first electric telescopic rod 7 to be energized and contracted, the slider 6 is driven to move. Under the action of the push arm 5, the lifting plate 4 and the displacement power seat 2 can be driven to move downward, so that the moving wheels 3 contact the ground and lift the moving base 1, facilitating the movement of the entire device. And the third electric telescopic rod 20 controls the relative two moving rods 24 to move towards each other, and then the moving rods 24 are in contact with each other. The moving rods 24 and the moving blocks 34 move relative to the sleeve 25. Thus, under the action of the driving arm 31, the limiting rod 27 is driven to expand relative to the sleeve 25 and finally contact and fit with the inner side of the tire, realizing the clamping and fixing work on the inner side of the tire. And by setting the spring 30, the buffer block 29 and the guide rail 28, the buffer work when the moving rods 24 are in contact can be realized, and the clamping and fixing work on tires with different inner diameters can be realized. By controlling the driving motor 13 to work, the threaded rod 15 is driven to rotate, and then the lifting seat 18 and the tire are driven to move upward along the grasping and mounting seat 12, so as to realize the adjustment of the position of the tire. Controlling the steering wheel 17 to work drives the steering base 16 and the grasping and mounting seat 12 to rotate, so that the tire follows the grasping and mounting seat 12 to turn 180°. Then, controlling the second electric telescopic rod 8 to contract drives the mounting ring seat 9 to move, and then drives the grasping and mounting seat 12 to move in the horizontal direction, so that the tire can be transported from one side of the moving base 1 to the other side, realizing the grasping work on the tire.

[0046] The above schematically describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural forms and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

[0047] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gripping manipulator for the production of all-steel radial tires, comprising a mobile base and a control console, the control console being arranged on the base, characterized in that, The grabbing manipulator further includes a moving assembly and a grabbing assembly. The moving assembly is in two groups and symmetrically arranged on the moving base, and is used to control the movement of the moving base. The grabbing assembly is movably arranged on the moving base, and is used to grab the tire and adjust the position of the tire. The grabbing assembly includes a grabbing mounting seat, a driving motor, a threaded rod, a positioning member, a direction adjusting member and a clamping module. The mounting seat is movably arranged on the mobile base. The direction adjusting member is arranged on the mounting seat and is used to adjust the orientation of the mounting seat. The positioning member is arranged on the mobile base and is connected to the grabbing mounting seat and is used to adjust the position of the grabbing mounting seat. The threaded rod is movably arranged on the grabbing mounting seat. The driving motor is arranged on the grabbing mounting seat and its output end is connected to the threaded rod. The clamping module is movably arranged on the grabbing mounting seat and is threadably matched with the threaded rod.

2. The gripping manipulator for the production of all-steel radial tires according to claim 1, wherein The steering member comprises a steering base and a plurality of steering wheels, the steering base is movably arranged on a moving machine base, the grabbing mounting seat is connected to the steering base, and the plurality of steering wheels are movably arranged on the steering base.

3. The gripping manipulator for the production of all-steel radial tires according to claim 1, wherein, The positioning component includes a mounting ring seat, a guide groove and a No. 2 electric telescopic rod. The mounting ring seat is movably arranged on a through groove formed on the mobile base. The mounting ring seat is sleeved on the outer side of the grabbing mounting seat. The inner wall of the mounting ring seat is formed with a guide groove that slides with the grabbing mounting seat. The No. 2 electric telescopic rod is arranged on the mobile base and its movable end is connected to the mounting ring seat.

4. The grasping manipulator for the production of all-steel radial tires according to claim 1, characterized in that, The clamping module includes a lifting seat and two sets of limiting structures. The lifting seat is movably arranged on a grabbing mounting seat. The threaded rod slides through the lifting seat and the two are threadedly matched. The two sets of limiting structures are symmetrically arranged on the lifting seat. The limiting structures are used to clamp and fix the tire.

5. The gripping manipulator for the production of all-steel radial tires according to claim 4, characterized in that, The limiting structure includes a contact plate, a No. 3 electric telescopic rod, a mobile mounting plate, a No. 3 electric telescopic rod and an execution unit. The mobile mounting plate is movably arranged on the lifting seat. The No. 3 electric telescopic rod is arranged on the lifting seat and its movable end is connected to the mobile mounting plate. The contact plate is movably arranged on the mobile mounting plate and the two are elastically connected. The execution unit is arranged on the mobile mounting plate. When the execution units on two adjacent mobile mounting plates meet, they are started and work. The execution unit performs clamping and fixing of the inner side of the tire.

6. The gripping manipulator for the production of all-steel radial tires according to claim 5, characterized in that, The abutment plate is provided with a plurality of resistance-increasing protrusions arranged around it.

7. The grasping manipulator for all-steel radial tire production according to claim 5, characterized in that, The execution unit includes a moving rod, a sleeve, a tailstock and several groups of limiting members, the sleeve is arranged between a moving mounting plate and a contact plate, the sleeve is connected to the moving mounting plate through the tailstock, a moving block is movably arranged in a mounting cavity formed in the sleeve, one end of the moving rod is slidably inserted in the mounting cavity and connected to the moving block, the moving block and the sleeve are elastically connected, a guide groove is provided on the sleeve that slidably cooperates with the moving block, several groups of limiting members are annularly arranged on the outer wall of the sleeve, and when the moving rod moves relative to the sleeve, the limiting member is controlled to unfold and contact with the inner side of the tire, and a cross groove is provided on the contact plate that slidably cooperates with the limiting rod.

8. The gripping manipulator for the production of all-steel radial tires according to claim 7, characterized in that, The limiting member includes a guiding seat, a limiting rod and a driving arm. The guiding seat is arranged on the outer wall of one end of the sleeve close to the tailstock. The limiting rod is movably arranged on the guiding seat and elastically connected therebetween. The driving arm is movably connected between the limiting rod and the moving block.

9. The grasping manipulator for all-steel radial tire production according to claim 8, wherein A guide rail is arranged on the limiting rod. A buffer block is movably arranged in the guide rail. The buffer block is connected to the limiting rod through a spring. The driving arm is movably arranged between the buffer block and the moving block.

10. The gripping manipulator for all-steel radial tire production according to claim 1, characterized in that, The moving assembly includes a displacement power seat, moving wheels, a lifting plate, a pushing arm, a sliding block and a first electric telescopic rod. The number of the displacement power seats is one group and they are symmetrically and movably arranged on both sides of the moving base. The lifting plate is movably arranged on a mating groove formed on the moving base and is connected to the displacement power seat. The sliding block is movably arranged on the moving base and is movably connected to the lifting plate through the pushing arm. A plurality of moving wheels are equidistantly and movably arranged on each displacement power seat. The first electric telescopic rod is arranged on the moving base and its movable end is connected to the sliding block.

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