Bending tool for wiring

Abstract

The bending tool comprises a base, a line folding table is fixedly arranged above the base, a table plate is arranged on the surface of the line folding table, a line folding mechanism is arranged above the table plate, the line folding mechanism comprises a fixed rod and a movable arm, the fixed rod is fixedly arranged in the middle of the table plate, and the movable arm is arranged in the middle of the table plate. The movable arms are symmetrically arranged on the front side and the rear side of the fixed rod, a cable is placed between the fixed rod and the movable arms, movable grooves are formed in the surface of the platen, the movable arms are inserted into the movable grooves, and driving parts are arranged below the movable arms; the device does not need to be manually bent in the using process, the wiring operation efficiency is remarkably improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of power line auxiliary equipment, and specifically relates to a bending tool for wiring. Background Technology

[0002] In power engineering, the laying and maintenance of cables play a crucial role. As the core medium for power transmission, cables typically require precise bending to meet specific spatial layout and installation requirements when running in distribution boxes, switch cabinets, junction boxes, and within cabinets. However, traditional cable bending methods rely primarily on manual operation, with workers using simple tools such as pliers and wrenches to bend the cables. This method, however, has many drawbacks.

[0003] On the one hand, manual bending makes it difficult to guarantee the accuracy of bending angles and radii. The shape of cables bent by different workers or by the same worker under different conditions can vary significantly. This can lead to chaotic wiring layouts, affecting the overall aesthetics, and may even damage the internal structure of the cables due to excessive or improper bending, reducing their conductivity and lifespan, thus affecting the normal operation of the electrical system and increasing safety hazards. On the other hand, manual operation is inefficient, especially in large-scale electrical installation projects, which require a significant amount of time and manpower to complete the cable bending work. This not only increases project costs but may also extend the project cycle and affect the overall project progress. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and solve the problems mentioned in the above-mentioned technical background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bending tool for wiring, comprising a base, a bending table fixedly disposed above the base, a platform disposed on the surface of the bending table, a bending mechanism disposed above the platform, the bending mechanism comprising a fixed rod and a movable arm, the fixed rod being fixedly disposed in the middle of the platform, the movable arm being symmetrically disposed on the front and rear sides of the fixed rod, a cable being placed between the fixed rod and the movable arm, a movable groove being disposed on the surface of the platform, the movable arm being inserted into the movable groove, and a driving component being disposed below the movable arm.

[0006] Both the fixed rod and the movable arm are detachable, making it easy to adapt to different cable types and bending angle requirements.

[0007] The driving component includes a support column and a limiting frame. The support column is fixedly disposed inside the base, and the limiting frame is disposed outside the support column. The limiting frame can be translated along the outer side of the support column.

[0008] A middle cylinder is movably fitted onto the outer side of the support column. A gear is located at the bottom of the middle cylinder, and a first extension rod is located at the top of the middle cylinder. An outer cylinder is fitted onto the outer side of the middle cylinder. A gear is located at the bottom of the outer cylinder, and a second extension rod is located at the top of the outer cylinder. Movable arms are provided at the outer ends of both the first and second extension rods. The middle cylinder can rotate outside the support column, and the outer cylinder can rotate outside the middle cylinder.

[0009] The limiting frame includes an outer frame and an inner frame. The outer frame has a slot inside, and the inner frame is engaged with the slot. A left rack is provided on the left side of the inner frame, and a right rack is provided on the right side of the inner frame. The left rack meshes with the outer cylinder gear, and the right rack meshes with the middle cylinder gear.

[0010] There is a height difference between the left and right racks. This height difference perfectly matches the middle and outer cylinder gears.

[0011] A drive cylinder is fixedly installed on the outside of the base, and the piston rod inside the drive cylinder is fixedly connected to the inner frame.

[0012] The movable arm includes a housing and a lifting cover. A lifting screw is fixedly installed at the bottom of the lifting cover. The lifting screw is screwed to the housing, and a channel for cables to pass through is formed between the lifting cover and the housing.

[0013] A vertical rod is installed inside the housing, and the vertical rod is inserted into the lifting screw. An anti-detachment head is fixedly installed at the top of the vertical rod. The diameter of the anti-detachment head is larger than the diameter of the vertical rod.

[0014] A reverse bending mechanism is provided on the side of the bending table away from the bending mechanism. The reverse bending mechanism includes an arc-shaped platform, which is fixedly installed inside the bending table. Moving blocks are symmetrically and movably arranged inside the arc-shaped platform. Movable arms are provided above the two moving blocks. Moving block screws are fixedly installed on the outer side of the two moving blocks. A positioning groove is provided on the outer side of the arc-shaped platform, and the outer end of the moving block screw extends out of the positioning groove.

[0015] A positioning rack is provided on the upper side of the positioning groove, and a rotating sleeve is screwed to the outer side of the moving block screw. A pressure plate is rotatably provided on the side of the rotating sleeve near the positioning groove, and the pressure plate meshes with the positioning rack.

[0016] This invention provides a bending tool for wiring, which has the following advantages: The piston rod of the drive cylinder pushes the inner frame to move linearly. The left and right racks on the inner frame, with their height difference, drive the outer and middle cylinder gears respectively, thereby causing the two movable arms to rotate synchronously around the fixed rod, achieving a one-time, automated bending action. This process eliminates the need for manual bending, significantly improving the efficiency of wiring operations and reducing labor intensity.

[0017] The movement of the movable arm is driven by a precision gear and rack mechanism, ensuring stable and controllable stroke and a high degree of consistency in the angle and shape of each bend. This effectively avoids problems such as inconsistent angles and irregular shapes that may occur with manual bending, guaranteeing the connection quality of the wiring.

[0018] By adjusting the extension length of the piston rod of the drive cylinder, the moving distance of the inner frame can be adjusted, thereby changing the rotation angle of the movable arm around the fixed rod, which facilitates bending the cable at different angles.

[0019] The movable arm adopts a structure in which the lifting cover is screwed to the housing. The size of the cable channel can be adjusted by rotating the lifting cover, thereby firmly clamping cables of different diameters, making it highly versatile.

[0020] The reverse bending mechanism enables reverse bending of the cable ends at different angles and shapes, meeting the diverse needs of cable reverse bending in various complex wiring layouts. The positions of the two reverse bending movable arms can be flexibly adjusted and fixed by sliding blocks and locking them using the engagement of the pressure plate and positioning rack. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the operation process of a wiring bending tool according to the present invention.

[0022] Figure 2 This is a diagram showing the internal structure of the bending table of a wiring bending tool according to the present invention.

[0023] Figure 3 This is a support structure diagram of a bending tool for wiring according to the present invention.

[0024] Figure 4 This is a structural diagram of a limiting frame for a wiring bending tool according to the present invention.

[0025] Figure 5 This is a cross-sectional view of the inner frame of a wiring bending tool according to the present invention.

[0026] Figure 6 This is an overall structural diagram of the movable arm of a bending tool for wiring according to the present invention.

[0027] Figure 7 This is a cross-sectional view of the movable arm of a wiring bending tool according to the present invention.

[0028] Figure 8 This is a structural diagram of the reverse bending mechanism of a bending tool for wiring according to the present invention.

[0029] In the diagram: 1. Base; 2. Folding table; 3. Table plate; 4. Fixed rod; 5. Movable arm; 6. Movable groove; 7. Cable; 8. Drive component; 9. Support column; 10. Limiting frame; 11. Middle cylinder; 12. Middle cylinder gear; 13. First extension rod; 14. Outer cylinder; 15. Outer cylinder gear; 16. Second extension rod; 17. Outer frame; 18. Inner frame; 19. Slot; 20. Left rack; 21. Right rack; 22. Drive cylinder; 23. Piston rod; 24. Housing; 25. Lifting cover; 26. Lifting screw; 27. Vertical rod; 28. Empty slot; 29. ​​Anti-detachment head; 30. Reverse folding mechanism; 31. Arc-shaped table; 32. Moving block; 33. Moving block screw; 34. Positioning groove; 35. Positioning rack; 36. Rotating sleeve; 37. Pressure plate. Detailed Implementation

[0030] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention. Example 1

[0031] Please see Figures 1 to 5 A bending tool for wiring includes a base 1, a bending table 2 fixedly mounted on the base 1, a platform 3 mounted on the surface of the bending table 2, a bending mechanism mounted on the platform 3, the bending mechanism including a fixed rod 4 and a movable arm 5, the fixed rod 4 fixedly mounted in the middle of the platform 3, the movable arm 5 symmetrically mounted on the front and rear sides of the fixed rod 4, a cable 7 placed between the fixed rod 4 and the movable arm 5, a movable groove 6 mounted on the surface of the platform 3, the movable arm 5 inserted into the movable groove 6, and a driving component 8 mounted below the movable arm 5.

[0032] Furthermore, the driving component 8 includes a support column 9 and a limiting frame 10. The support column 9 is fixedly disposed inside the base 1, and the limiting frame 10 is disposed outside the support column 9.

[0033] Furthermore, a middle cylinder 11 is movably sleeved on the outer side of the support column 9. A middle cylinder gear 12 is provided at the bottom of the middle cylinder 11, and a first extension rod 13 is provided at the top of the middle cylinder 11. An outer cylinder 14 is sleeved on the outer side of the middle cylinder 11, and an outer cylinder gear 15 is provided at the bottom of the outer cylinder 14. A second extension rod 16 is provided at the top of the outer cylinder 14. Movable arms 5 are provided at the outer ends of both the first extension rod 13 and the second extension rod 16. The middle cylinder 11 and the outer cylinder 14 are sleeved on the support column 9 and constrained by the limiting frame 10, which ensures the smoothness of the transmission process and avoids the movable arms 5 from shaking or misaligning during movement.

[0034] Furthermore, the limiting frame 10 includes an outer frame 17 and an inner frame 18. The outer frame 17 has a slot 19 inside, and the inner frame 18 is engaged with the slot 19. A left rack 20 is provided on the left side of the inner frame 18, and a right rack 21 is provided on the right side of the inner frame 18. The left rack 20 meshes with the outer cylinder gear 15, and the right rack 21 meshes with the middle cylinder gear 12.

[0035] Furthermore, there is a height difference between the left rack 20 and the right rack 21.

[0036] Furthermore, a drive cylinder 22 is fixedly installed on the outer side of the base 1, and the piston rod 23 inside the drive cylinder 22 is fixedly connected to the inner frame 18.

[0037] Before using this device, carefully inspect all components to ensure they are intact and undamaged. If any component is found to be damaged or abnormal, it should be repaired or replaced promptly to ensure the tool is in good working order.

[0038] In use, place the prepared cable 7 above the bending table 2, positioning it between the fixed rod 4 and the movable arm 5 of the bending mechanism. Adjust the position of the cable 7 according to its diameter and bending requirements to ensure it is accurately placed in the appropriate position and that the cable 7 is subjected to uniform force during bending. Activate the drive cylinder 22 on the outside of the base 1 using the control device (not shown in the figure). The piston rod 23 inside the drive cylinder 22 will extend outward, pushing the inner frame 18, which is fixedly connected to it, to move within the slot 19 of the outer frame 17 of the limiting frame 10. The left rack 20 and right rack 21 drive the outer cylinder gear 15 and the middle cylinder gear 12 to rotate, which in turn drives the first extension rod 13 to rotate via the middle cylinder 11 and the second extension rod 16 to rotate via the outer cylinder 14, causing the two movable arms 5 to move along the movable groove 6, thereby bending the cable 7.

[0039] During the bending process, the opening and closing angle of the movable arm 5 is precisely adjusted by regulating the extension and retraction length of the piston rod 23 according to the actual required bending angle, ensuring that the bending angle meets the requirements. Once the cable 7 is bent to the required angle, the operation of the drive cylinder 22 is stopped. At this point, the cable 7 has completed the bending process. The shape and quality of the bent portion are checked to ensure it meets the usage requirements. In large-scale electrical installation projects, cable bending operations can be completed quickly in batches. Example 2

[0040] Please see Figures 1 to 7A bending tool for wiring includes a base 1, a bending table 2 fixedly mounted on the base 1, a platform 3 mounted on the surface of the bending table 2, a bending mechanism mounted on the platform 3, the bending mechanism including a fixed rod 4 and a movable arm 5, the fixed rod 4 fixedly mounted in the middle of the platform 3, the movable arm 5 symmetrically mounted on the front and rear sides of the fixed rod 4, a cable 7 placed between the fixed rod 4 and the movable arm 5, a movable groove 6 mounted on the surface of the platform 3, the movable arm 5 inserted into the movable groove 6, and a driving component 8 mounted below the movable arm 5.

[0041] Furthermore, the driving component 8 includes a support column 9 and a limiting frame 10. The support column 9 is fixedly disposed inside the base 1, and the limiting frame 10 is disposed outside the support column 9.

[0042] Furthermore, a middle cylinder 11 is movably sleeved on the outer side of the support column 9. A middle cylinder gear 12 is provided at the bottom of the middle cylinder 11, and a first extension rod 13 is provided at the top of the middle cylinder 11. An outer cylinder 14 is sleeved on the outer side of the middle cylinder 11, and an outer cylinder gear 15 is provided at the bottom of the outer cylinder 14. A second extension rod 16 is provided at the top of the outer cylinder 14. Movable arms 5 are provided at the outer ends of both the first extension rod 13 and the second extension rod 16. The middle cylinder 11 and the outer cylinder 14 are sleeved on the support column 9 and constrained by the limiting frame 10, which ensures the smoothness of the transmission process and avoids the movable arms 5 from shaking or misaligning during movement.

[0043] Furthermore, the limiting frame 10 includes an outer frame 17 and an inner frame 18. The outer frame 17 has a slot 19 inside, and the inner frame 18 is engaged with the slot 19. A left rack 20 is provided on the left side of the inner frame 18, and a right rack 21 is provided on the right side of the inner frame 18. The left rack 20 meshes with the outer cylinder gear 15, and the right rack 21 meshes with the middle cylinder gear 12.

[0044] Furthermore, there is a height difference between the left rack 20 and the right rack 21.

[0045] Furthermore, a drive cylinder 22 is fixedly installed on the outer side of the base 1, and the piston rod 23 inside the drive cylinder 22 is fixedly connected to the inner frame 18.

[0046] Furthermore, the movable arm 5 includes a housing 24 and a lifting cover 25. A lifting screw 26 is fixedly provided at the bottom of the lifting cover 25. The lifting screw 26 is screwed to the housing 24. A channel for cable passage is formed between the lifting cover 25 and the housing 24.

[0047] Furthermore, a vertical rod 27 is provided inside the housing 24, which is inserted into the lifting screw 26. An anti-detachment head 29 is fixedly provided at the top of the vertical rod 27. The design of the vertical rod 27 and the anti-detachment head 29 inside the movable arm 5 effectively prevents the lifting screw 26 from coming out of the housing 24 during adjustment or under pressure, thereby enhancing the durability and operational safety of the tool.

[0048] In another embodiment, the structure of the movable arm 5 can be adjusted according to the cable specifications to facilitate the clamping and limiting of the cable 7. The movable arm 5 structure is preferably as follows: Hold the lifting cover 25 by hand and rotate it according to the diameter of the cable 7. Since the lifting screw 26 at the bottom of the lifting cover 25 is screwed to the housing 24, rotating the lifting cover 25 will cause the lifting screw 26 to rise or fall within the housing 24. During the rotation of the lifting cover 25, closely observe the change in the height of the cable passage formed between the lifting cover 25 and the housing 24. By continuously adjusting, the height of the passage is made slightly larger than the diameter of the cable 7, ensuring that the cable 7 can be easily inserted into the passage while having sufficient space during bending to avoid excessive compression.

[0049] Furthermore, the vertical rod 27 inside the housing 24 is inserted into the lifting screw 26, and the top of the vertical rod 27 is provided with an anti-detachment head 29. During the lifting adjustment and bending operation of the movable arm 5, the anti-detachment head 29 can effectively prevent the lifting cover 25 from separating from the housing 24, avoiding safety accidents and tool damage caused by the detachment of parts. Example 3

[0050] Please see Figures 1 to 8 A bending tool for wiring includes a base 1, a bending table 2 fixedly mounted on the base 1, a platform 3 mounted on the surface of the bending table 2, a bending mechanism mounted on the platform 3, the bending mechanism including a fixed rod 4 and a movable arm 5, the fixed rod 4 fixedly mounted in the middle of the platform 3, the movable arm 5 symmetrically mounted on the front and rear sides of the fixed rod 4, a cable 7 placed between the fixed rod 4 and the movable arm 5, a movable groove 6 mounted on the surface of the platform 3, the movable arm 5 inserted into the movable groove 6, and a driving component 8 mounted below the movable arm 5.

[0051] Furthermore, the driving component 8 includes a support column 9 and a limiting frame 10. The support column 9 is fixedly disposed inside the base 1, and the limiting frame 10 is disposed outside the support column 9.

[0052] Furthermore, a middle cylinder 11 is movably sleeved on the outer side of the support column 9. A middle cylinder gear 12 is provided at the bottom of the middle cylinder 11, and a first extension rod 13 is provided at the top of the middle cylinder 11. An outer cylinder 14 is sleeved on the outer side of the middle cylinder 11, and an outer cylinder gear 15 is provided at the bottom of the outer cylinder 14. A second extension rod 16 is provided at the top of the outer cylinder 14. Movable arms 5 are provided at the outer ends of both the first extension rod 13 and the second extension rod 16. The middle cylinder 11 and the outer cylinder 14 are sleeved on the support column 9 and constrained by the limiting frame 10, which ensures the smoothness of the transmission process and avoids the movable arms 5 from shaking or misaligning during movement.

[0053] Furthermore, the limiting frame 10 includes an outer frame 17 and an inner frame 18. The outer frame 17 has a slot 19 inside, and the inner frame 18 is engaged with the slot 19. A left rack 20 is provided on the left side of the inner frame 18, and a right rack 21 is provided on the right side of the inner frame 18. The left rack 20 meshes with the outer cylinder gear 15, and the right rack 21 meshes with the middle cylinder gear 12.

[0054] Furthermore, there is a height difference between the left rack 20 and the right rack 21.

[0055] Furthermore, a drive cylinder 22 is fixedly installed on the outer side of the base 1, and the piston rod 23 inside the drive cylinder 22 is fixedly connected to the inner frame 18.

[0056] Furthermore, the movable arm 5 includes a housing 24 and a lifting cover 25. A lifting screw 26 is fixedly provided at the bottom of the lifting cover 25. The lifting screw 26 is screwed to the housing 24. A channel for cable passage is formed between the lifting cover 25 and the housing 24.

[0057] Furthermore, a vertical rod 27 is provided inside the housing 24, which is inserted into the lifting screw 26. An anti-detachment head 29 is fixedly provided at the top of the vertical rod 27. The design of the vertical rod 27 and the anti-detachment head 29 inside the movable arm 5 effectively prevents the lifting screw 26 from coming out of the housing 24 during adjustment or under pressure, thereby enhancing the durability and operational safety of the tool.

[0058] Furthermore, a reverse bending mechanism 30 is provided on the side of the bending table 2 away from the bending mechanism. The reverse bending mechanism 30 includes an arc-shaped platform 31, which is fixedly installed inside the bending table 2. Shifting blocks 32 are symmetrically and movably arranged inside the arc-shaped platform 31. Movable arms 5 are provided above each of the two shifting blocks 32. Shifting block screws 33 are fixedly installed on the outer sides of the two shifting blocks 32. A positioning groove 34 is provided on the outer side of the arc-shaped platform 31, and the outer end of the shifting block screw 33 extends out of the positioning groove 34.

[0059] Furthermore, a positioning rack 35 is provided on the upper side of the positioning groove 34, and a rotating sleeve 36 is screwed onto the outer side of the moving block screw 33. A pressure plate 37 is rotatably provided on the side of the rotating sleeve 36 near the positioning groove 34, and the pressure plate 37 meshes with the positioning rack 35. In the reverse bending mechanism 30, the meshing of the pressure plate 37 and the positioning rack 35 can firmly lock the position of the moving block 32, prevent displacement during bending, and ensure the accuracy of the reverse bending angle.

[0060] In another embodiment, when some cables require reverse bending on both sides of the bending section, a reverse bending mechanism can be added to the upper side of the bending table. The reverse bending mechanism is preferably a [specific type of mechanism].

[0061] Based on the required folding position and angle of cable 7, determine the appropriate positions of the two moving blocks 32 within the arc-shaped platform 31. Hold the outer end of the moving block screw 33 and push it to move the moving block 32 to the target position within the arc-shaped platform 31. Once the moving block 32 is in the appropriate position, rotate the rotating sleeve 36 screwed to the outside of the moving block screw 33, causing it to move towards the positioning groove 34. A pressure plate 37 is rotatably mounted on the side of the rotating sleeve 36 closest to the positioning groove 34. As the rotating sleeve 36 moves, the pressure plate 37 gradually approaches the positioning rack 35. Continue rotating the rotating sleeve 36 until the pressure plate 37 and the positioning rack 35 mesh. Because the positioning rack 35 has a fixed tooth profile, once the pressure plate 37 meshes with the positioning rack 35, the moving block screw 33 will be fixed in the current position of the positioning groove 34, thus preventing the moving block 32 from moving during use. When the cable bent by the bending mechanism encounters the movable arm 5 on the upper side of the moving block 32, its movement is restricted, and the bending mechanism continues to operate to complete the reverse bending action.

Claims

1. A bending tool for wiring, comprising a base, characterized in that: A folding platform is fixedly installed above the base. A platform plate is provided on the surface of the folding platform. A folding mechanism is provided above the platform plate. The folding mechanism includes a fixed rod and a movable arm. The fixed rod is fixedly installed in the middle of the platform plate. The movable arm is symmetrically arranged on the front and rear sides of the fixed rod. A cable is placed between the fixed rod and the movable arm. A movable groove is provided on the surface of the platform plate. The movable arm is inserted into the movable groove. A driving component is provided below the movable arm.

2. The bending tool for wiring as described in claim 1, characterized in that: The driving component includes a support column and a limiting frame. The support column is fixedly installed inside the base, and the limiting frame is installed outside the support column.

3. A bending tool for wiring as described in claim 2, characterized in that: A middle cylinder is movably sleeved on the outside of the support column. A middle cylinder gear is provided at the bottom of the middle cylinder. A first extension rod is provided at the top of the middle cylinder. An outer cylinder is sleeved on the outside of the middle cylinder. An outer cylinder gear is provided at the bottom of the outer cylinder. A second extension rod is provided at the top of the outer cylinder. Movable arms are provided at the outer ends of both the first and second extension rods.

4. A bending tool for wiring as described in claim 3, characterized in that: The limiting frame includes an outer frame and an inner frame. The outer frame has a slot inside, and the inner frame is engaged with the slot. A left rack is provided on the left side of the inner frame, and a right rack is provided on the right side of the inner frame. The left rack meshes with the outer cylinder gear, and the right rack meshes with the middle cylinder gear.

5. A bending tool for wiring as described in claim 4, characterized in that: There is a height difference between the left and right racks.

6. A bending tool for wiring as described in claim 5, characterized in that: A drive cylinder is fixedly installed on the outside of the base, and the piston rod inside the drive cylinder is fixedly connected to the inner frame.

7. A bending tool for wiring as described in claim 1, characterized in that: The movable arm includes a housing and a lifting cover. A lifting screw is fixedly installed at the bottom of the lifting cover. The lifting screw is screwed to the housing, and a channel for cables to pass through is formed between the lifting cover and the housing.

8. A bending tool for wiring as described in claim 7, characterized in that: A vertical rod is provided inside the housing, which is inserted into the lifting screw, and an anti-detachment head is fixedly provided at the top of the vertical rod.

9. A bending tool for wiring as described in claim 1, characterized in that: A reverse bending mechanism is provided on the side of the bending table away from the bending mechanism. The reverse bending mechanism includes an arc-shaped platform, which is fixedly installed inside the bending table. Moving blocks are symmetrically and movably arranged inside the arc-shaped platform. Movable arms are provided above the two moving blocks. Moving block screws are fixedly installed on the outer side of the two moving blocks. A positioning groove is provided on the outer side of the arc-shaped platform, and the outer end of the moving block screw extends out of the positioning groove.

10. A bending tool for wiring as described in claim 9, characterized in that: A positioning rack is provided on the upper side of the positioning groove, and a rotating sleeve is screwed to the outer side of the moving block screw. A pressure plate is rotatably provided on the side of the rotating sleeve near the positioning groove, and the pressure plate meshes with the positioning rack.

Images