Material receiving device for combined machining of sectional materials

Abstract

The utility model discloses a material receiving device for composite processing of section bars, which comprises a horizontally arranged bottom plate, a material screening mechanism for accommodating the section bars is arranged above the bottom plate, a material selecting mechanism and a conveying mechanism are sequentially arranged below the bottom plate, the bottom plate is provided with a through material port, and the material screening mechanism is communicated with the material selecting mechanism through the material port. Firstly, the profiles enter from the top of the feeding frame, and the vibration motor drives the feeding frame to vibrate left and right, so that the profiles are stacked and placed in the feeding frame and enter the feeding hole through the material opening. And then, the material selecting seat is switched to be in a closed state, that is, the feeding hole is communicated, the discharging hole is closed, and the profile enters the material selecting hole from the feeding hole and stays in the material selecting hole. And then, the material selecting seat is switched to be in an open state, that is, the feeding hole is closed, the discharging hole is communicated, and the sectional materials enter the discharging hole from the material selecting hole and flow out to the conveying belt. And finally, the sectional material is conveyed to the tail end along the conveying belt, and the material pushing block ejects the sectional material out and conveys the sectional material to the next procedure.

Description

Technical Field

[0001] The utility model relates to the technical field of composite processing equipment for profiles, in particular to a material receiving device for composite processing of profiles. Background Art

[0002] Profiles are the most widely used type of non-ferrous metal structural materials in industry. With the acceleration of industrialization, the demand for profile products is increasing, and they are widely used in the fields of aviation, aerospace, automobiles, machinery, ships, and construction. In the production process, profiles need to go through multiple processes such as aluminum bar smelting, profile casting, extrusion molding, and surface treatment. If profile products with specific shapes are to be processed, profile composite processing equipment is required. In order to improve the flow efficiency of each processing link, it is often used in conjunction with a material receiving device.

[0003] Patent No. ZL 202320790886.9 discloses an aluminum profile forming unloading mechanism, which solves the problem that the existing unloading mechanism uses a conveyor belt to unload materials, which easily leads to untimely collection by staff, blockage and affects stacking efficiency by setting a bottom plate, a fixed plate, a transmission rod, a first gear, a transmission belt, a partition, a limit shell, an adjustment component and a slide. However, the above patent solution can only improve the convenience and stability of receiving materials. Operators are still required to manually collect materials in the future before they can be stacked and stored in batches. It is impossible to achieve the effects of material quantity control, step-by-step conveying, and orderly arrangement of profiles, which is not conducive to improving production efficiency. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and to provide a material receiving device for composite processing of profiles.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A material receiving device for composite processing of profiles, comprising a horizontally arranged bottom plate, a material screening mechanism for accommodating profiles is arranged above the bottom plate, a material selection mechanism and a transportation mechanism are arranged in sequence below the bottom plate, a material port is provided through the bottom plate, and the material screening mechanism is connected with the material selection mechanism through the material port, and is characterized in that:

[0007] The screening mechanism includes a feeding frame slidably connected to the bottom plate, and a vibration motor driving the feeding frame to vibrate left and right. The top of the feeding frame is open, and the bottom of the feeding frame is connected to the material port.

[0008] The material selection mechanism includes a feed hole connected to the material port, a discharge hole offset below the feed hole, and a material selection seat capable of switching and closing the feed hole and the discharge hole, wherein the material selection seat is provided with material selection holes corresponding to the feed hole and the discharge hole;

[0009] The transport mechanism comprises a conveyor belt located below the discharge hole and a pusher block slidably arranged at the end of the conveyor belt.

[0010] Preferably, the material selection mechanism includes a feed seat and a discharge seat arranged up and down, a plurality of feed plates are arranged at intervals on the feed seat, and a discharge seat is provided with a discharge plate staggered with the feed plate, the interval between two adjacent feed plates is a feed hole, and the interval between two adjacent discharge plates is a discharge hole.

[0011] Preferably, the top of the feed plate is provided with a guiding inclined surface, the bottom of the feed plate corresponds to the position of the discharge hole, the top of the discharge plate is a flat surface, and the bottom of the discharge plate is provided with a guide sliding surface inclined toward the middle and corresponding to the position of the conveyor belt.

[0012] Preferably, the material selection seat is horizontally slidably connected between the feed seat and the discharge seat, the material selection seat is connected to a material selection cylinder, and the material selection seat is provided with material selection plates that can switchably close the feed hole and the discharge hole, and the material selection hole is between two adjacent material selection plates.

[0013] Preferably, the widths of the feed plate, discharge plate and selection plate are all equal to the diameter of the profile, the widths of the feed hole, discharge hole and selection hole are all equal to the diameter of the profile, and the height of the selection plate is equal to a multiple of the profile diameter.

[0014] Preferably, the transport mechanism includes a pushing port opened at the end of the conveyor belt, one side of the pushing port is slidably connected to a pushing block, the pushing block is connected to a pushing cylinder, and the other side of the pushing port is connected to a conveying slide.

[0015] Preferably, a limiting plate extending toward the conveyor belt is provided on the top of the pushing block, the width of the pushing block is equal to the length of the profile, and the distance from the bottom of the limiting plate to the surface of the conveyor belt is equal to the diameter of the profile.

[0016] Preferably, a plurality of vertically arranged baffles are provided on the surface of the conveyor belt, and the baffles are evenly arranged along the conveyor belt, and the distance between two adjacent baffles is equal to the length of the profile.

[0017] The utility model has the following beneficial effects:

[0018] The utility model is used for composite processing of profiles and can be installed at the end of the processing equipment for receiving materials. First, the profile enters from the top of the feeding frame, and the vibration motor drives the feeding frame to vibrate left and right, so that the profile is stacked and placed inside the feeding frame, and enters the feeding hole through the material port, so as to achieve orderly arrangement of the profile. Then, the material selection seat is switched to a closed state, that is, the feeding hole is connected and the discharging hole is closed, and the profile enters the material selection hole from the feeding hole and stays in the material selection hole, so as to control the conveying quantity of the profile. Then, the material selection seat is switched to an open state, that is, the feeding hole is closed and the discharging hole is connected, and the profile enters the discharging hole from the material selection hole and flows out onto the conveyor belt, so as to achieve intermittent feeding of the profile. Finally, the profile is transported to the end along the conveyor belt, and the push block pushes the profile out and sends it to the next process. The utility model receives the profile, achieves the effects of orderly arrangement of the profile, control of the conveying quantity, intermittent feeding of the profile, and transportation and delivery of the profile, which is conducive to improving work efficiency and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the assembly of the material receiving device of the utility model

[0020] Figure 2 The schematic diagram of the structure of the screening mechanism of the utility model is

[0021] Figure 3 This is a structural schematic diagram of the material selection seat of the utility model being switched to a closed state.

[0022] Figure 4 This is a structural schematic diagram of the material selection seat of the utility model being switched to an open state.

[0023] Figure 5 This is a structural diagram of the material selection mechanism of the utility model.

[0024] Description of the drawings: bottom plate 1, material selection mechanism 2, material port 3, feeding frame 4, vibration motor 5, conveyor belt 6, pushing block 7, feed seat 8, feed plate 9, feed hole 10, discharge seat 11, discharge plate 12, discharge hole 13, material selection seat 14, material selection plate 15, material selection hole 16, material selection cylinder 17, pushing cylinder 18, conveyor slide 19, baffle 20. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figures 1 to 5, an embodiment provided by the utility model:

[0027] A material receiving device for composite processing of profiles, comprising a horizontally arranged base plate 1, a screening mechanism for accommodating profiles is arranged above the base plate 1, a material selection mechanism 2 and a transportation mechanism are arranged in sequence below the base plate 1, the base plate 1 is provided with a penetrating material port 3, the screening mechanism is connected with the material selection mechanism 2 through the material port 3, the screening mechanism comprises a feeding frame 4 slidably connected with the base plate 1, and a vibration motor 5 driving the feeding frame 4 to vibrate left and right, the top of the feeding frame 4 is open, and the bottom of the feeding frame 4 is connected with the material port 3; the material selection mechanism 2 comprises a feeding hole 10 connected with the material port 3, a discharging hole 13 offset below the feeding hole 10, and a material selection seat 14 that can switch to close the feeding hole 10 and the discharging hole 13, the material selection seat 14 is provided with a material selection hole 16 corresponding to the feeding hole 10 and the discharging hole 13; the transportation mechanism comprises a conveyor belt 6 located below the discharging hole 13, and a pushing block 7 slidably arranged at the end of the conveyor belt 6.

[0028] The material receiving device is used for composite processing of profiles and is suitable for cylindrical profiles. It can be installed at the end of the processing equipment for material receiving, for example, at the end of the profile cutting equipment. After the profile is cut, it enters the material receiving device for orderly arrangement and intermittent transportation. The material receiving device includes a base plate 1, a screening mechanism, a material selection mechanism 2, and a transportation mechanism. The base plate 1 is horizontally arranged for mounting components. The screening mechanism is located above the base plate 1 for accommodating profiles. The material selection mechanism 2 is located below the base plate 1 for screening profiles. The transportation mechanism is located below the material selection mechanism 2 for transporting profiles. The base plate 1 is provided with a through material port 3, the width of the material port 3 is equal to the length of the profile, and the screening mechanism is connected to the material selection mechanism 2 through the material port 3.

[0029] The feeding frame 4 is located above the bottom plate 1 and is slidably connected to the bottom plate 1. The feeding frame 4 is an inverted trapezoidal structure that is wide at the top and narrow at the bottom. The top of the feeding frame 4 is open, and the bottom of the feeding frame 4 is connected to the material port 3. The width of the feeding frame 4 is equal to the length of the profile. The feeding frame 4 is connected to the vibration motor 5. Driven by the vibration motor 5, the feeding frame 4 vibrates in the left and right directions, so that the profiles located inside the feeding frame 4 are neatly stacked and gathered at the bottom of the feeding frame 4. The profiles enter the material selection mechanism 2 from the material port 3.

[0030] The feed seat 8, the material selection seat 14, and the discharge seat 11 are arranged from top to bottom. The feed seat 8 is fixedly connected to the bottom plate 1. The feed hole 10 is opened in the feed seat 8, and the upper part of the feed hole 10 is connected to the material port 3. The discharge seat 11 is fixedly connected to the lower part of the feed seat 8, and the discharge hole 13 is opened in the discharge seat 11, and the upper part of the discharge hole 13 is staggered with the feed hole 10. The material selection seat 14 is slidably connected between the feed seat 8 and the discharge seat 11, and the material selection hole 16 is opened in the material selection seat 14. The material selection hole 16 matches the shape and position of the feed hole 10 and the discharge hole 13, and the width of the feed hole 10, the discharge hole 13, and the material selection hole 16 is equal to the diameter of the profile. The material selection seat 14 can adjust the position by horizontal sliding to close the feed hole 10 or the discharge hole 13. When the material selection seat 14 is switched to the closed state, that is, the feed hole 10 is connected and the discharge hole 13 is closed, the profile enters the material selection hole 16 from the feed hole 10 and stays in the material selection hole 16, thereby controlling the conveying quantity of the profile. When the material selection seat 14 is switched to the open state, that is, the feed hole 10 is closed and the discharge hole 13 is connected, the profile enters the discharge hole 13 from the material selection hole 16 and flows out to the conveyor belt 6, thereby realizing intermittent feeding of the profile.

[0031] The conveyor belt 6 is located below the material selection mechanism 2, corresponding to the position of the discharge hole 13. After the profile flows out of the discharge hole 13, it falls onto the surface of the conveyor belt 6. The pusher block 7 is slidably arranged at the end of the conveyor belt 6. As the conveyor belt 6 is transported to the end, the pusher block 7 pushes out the profile, so that it exits the conveyor belt 6 and is sent to the next process, thereby realizing the transportation and delivery of the profile.

[0032] The utility model is used for composite processing of profiles and can be installed at the end of the processing equipment for material connection. First, the profile enters from the top of the feeding frame 4, and the vibration motor 5 drives the feeding frame 4 to vibrate left and right, so that the profile is stacked and placed inside the feeding frame 4, and enters the feed hole 10 through the material port 3, so as to achieve orderly arrangement of the profile. Then, the material selection seat 14 is switched to a closed state, that is, the feed hole 10 is connected and the discharge hole 13 is closed, and the profile enters the material selection hole 16 from the feed hole 10 and stays in the material selection hole 16, so as to control the conveying quantity of the profile. Subsequently, the material selection seat 14 is switched to an open state, that is, the feed hole 10 is closed and the discharge hole 13 is connected, and the profile enters the discharge hole 13 from the material selection hole 16 and flows out to the conveyor belt 6, so as to achieve intermittent feeding of the profile. Finally, the profile is transported to the end along the conveyor belt 6, and the push block 7 pushes the profile out and sends it to the next process. The utility model receives the profiles, achieves the effects of orderly arranging the profiles, controlling the conveying quantity, intermittently conveying the profiles, and transporting and delivering the profiles, which is beneficial to improving work efficiency and saving labor costs.

[0033] In this embodiment, as a preference, the material selection mechanism 2 includes a feed seat 8 and a discharge seat 11 arranged up and down, the feed seat 8 is provided with a plurality of feed plates 9 at intervals, the discharge seat 11 is provided with a discharge plate 12 offset from the feed plate 9, the interval between two adjacent feed plates 9 is a feed hole 10, and the interval between two adjacent discharge plates 12 is a discharge hole 13.

[0034] The feed seat 8 and the discharge seat 11 are arranged up and down, and the feed seat 8 is provided with a plurality of feed plates 9 at intervals, and the interval between two adjacent feed plates 9 is a feed hole 10, and the discharge seat 11 is provided with a plurality of discharge plates 12 at intervals, and the interval between two adjacent discharge plates 12 is a discharge hole 13, and the feed plates 9 and the discharge plates 12 are staggered, and the feed holes 10 and the discharge holes 13 are staggered. It can be understood that the feed seat 8 is provided with a through feed window, and the feed window and the material port 3 are matched in size and aligned with each other, and the feed plates 9 are arranged at intervals in the feed window, and the feed window is divided into a plurality of feed holes 10. The discharge seat 11 is provided with a through discharge window, and the discharge window and the feed window are matched in size and staggered, and the staggered distance can be equal to the diameter of the profile, and the discharge plates 12 are arranged at intervals in the discharge window, and the discharge window is divided into a plurality of discharge holes 13.

[0035] In this embodiment, preferably, a guiding inclined surface is provided on the top of the feed plate 9, the bottom of the feed plate 9 corresponds to the position of the discharge hole 13, the top of the discharge plate 12 is a flat surface, and the bottom of the discharge plate 12 is provided with a guide sliding surface inclined toward the middle and corresponding to the position of the conveyor belt 6.

[0036] The inclined surface is located at the top of the feed plate 9, and is inclined from the center of the feed plate 9 to both sides. The profile is connected to the inclined surface by rolling, and the profile inside the feeding frame 4 is guided to the feed hole 10. The bottom of the feed plate 9 corresponds to the position and size of the discharge hole 13, thereby guiding the profile. The top of the discharge plate 12 is a flat surface, which supports the profile in the selection hole 16. The bottom of the discharge plate 12 is provided with a guide surface, and is inclined toward the middle of the discharge plate 12, so that the profile converges to the middle and flows downward to the conveyor belt 6, thereby gathering the profile.

[0037] In this embodiment, as a preference, the material selection seat 14 is horizontally slidably connected between the feed seat 8 and the discharge seat 11, the material selection seat 14 is connected to a material selection cylinder 17, and the material selection seat 14 is provided with material selection plates 15 that can switchably close the feed hole 10 and the discharge hole 13, and the material selection hole 16 is between two adjacent material selection plates 15.

[0038] The material selection seat 14 is horizontally arranged between the material feed seat 8 and the material discharge seat 11, and the sliding distance can be equal to the diameter of the profile. It can be understood that the material selection seat 14 is provided with a through material selection window, the material selection window matches the size of the material feed window and the material discharge window, and the material selection plate 15 is arranged in the material selection window at intervals, and the material selection window is divided into a plurality of material selection holes 16. The material selection seat 14 is connected to a material selection cylinder 17, and under the drive of the material selection cylinder 17, the material selection seat 14 reciprocates in the left and right directions.

[0039] When the material selection seat 14 is switched to the closed state, the feed plate 9 is aligned with the material selection plate 15, the feed hole 10 is aligned with the material selection hole 16, the discharge plate 12 is misaligned with the material selection plate 15, and the discharge hole 13 is misaligned with the material selection hole 16, so that the feed hole 10 is connected and the discharge hole 13 is closed. The profile enters the material selection hole 16 from the feed hole 10, the top of the discharge plate 12 contacts the profile, and the profile stays in the material selection hole 16, thereby controlling the conveying amount of the profile. When the material selection seat 14 is switched to the open state, the feed plate 9 is misaligned with the material selection plate 15, the feed hole 10 is misaligned with the material selection hole 16, the discharge plate 12 is aligned with the material selection plate 15, and the discharge hole 13 is aligned with the material selection hole 16, so that the feed hole 10 is closed and the discharge hole 13 is connected. The material selection plate 15 pushes the profile to move horizontally, and the profile enters the discharge hole 13 from the material selection hole 16 and flows out onto the conveyor belt 6, thereby realizing intermittent feeding of the profile.

[0040] In this embodiment, preferably, the widths of the feed plate 9, the discharge plate 12 and the selection plate 15 are all equal to the diameter of the profile, the widths of the feed hole 10, the discharge hole 13 and the selection hole 16 are all equal to the diameter of the profile, and the height of the selection plate 15 is equal to a multiple of the profile diameter.

[0041] The widths of the feed plate 9, the discharge plate 12, and the selection plate 15 are all equal to or slightly larger than the diameter of the profile, and the widths of the feed hole 10, the discharge hole 13, and the selection hole 16 are all equal to or slightly larger than the diameter of the profile, which limit the profile and improve the transportation stability. The height of the selection plate 15 is equal to a multiple of the profile diameter, which can be three times the profile diameter. When the selection seat 14 is switched to the closed state, the profile enters the selection hole 16 from the feed hole 10, and three profiles are vertically stacked in the selection hole 16; when the selection seat 14 is switched to the open state, the profile enters the discharge hole 13 from the selection hole 16, and the three profiles fall into the conveyor belt 6 through the discharge hole 13 in turn, thereby controlling the conveying quantity of the profile.

[0042] In this embodiment, as a preference, the transport mechanism includes a pushing port opened at the end of the conveyor belt 6, one side of the pushing port is slidably connected to the pushing block 7, the pushing block 7 is connected to the pushing cylinder 18, and the other side of the pushing port is connected to the conveying slide 19.

[0043] The push port is opened at the end of the conveyor belt 6. Side plates are arranged on both sides of the conveyor belt 6. The push port is set through the side plates. The push block 7 is slidably connected to one side of the push port. The push block 7 is connected to the push cylinder 18. The feed chute 19 is connected to the other side of the push port. The profiles flowing out of the discharge hole 13 are arranged side by side and move to the end position with the conveyor belt 6. Driven by the push cylinder 18, the push block 7 moves toward the conveyor belt 6, pushing the profile out of the conveyor belt 6, making it fall into the feed chute 19 and transported to the next process, realizing the transportation and delivery of the profile.

[0044] In this embodiment, preferably, a limiting plate extending toward the conveyor belt 6 is provided on the top of the push block 7, the width of the push block 7 is equal to the length of the profile, and the distance from the bottom of the limiting plate to the surface of the conveyor belt 6 is equal to the diameter of the profile.

[0045] The push block 7 is an L-shaped structure. The limit plate is arranged on the top of the push block 7 and extends toward the conveyor belt 6. The limit plate covers the top of the profile. The width of the push block 7 is equal to the length of the profile, ensuring horizontal contact with the profile and improving the stability of ejection. The distance from the bottom of the limit plate to the surface of the conveyor belt 6 is equal to the diameter of the profile, which plays a limiting role to prevent the profiles from stacking on each other during the ejection process.

[0046] In this embodiment, as a preference, a plurality of vertically arranged baffles 20 are provided on the surface of the conveyor belt 6 , and the baffles 20 are evenly arranged along the conveyor belt 6 , and the distance between two adjacent baffles 20 is equal to the length of the profile.

[0047] The baffle 20 is installed on the surface of the conveyor belt 6. The baffle 20 is vertically arranged and evenly arranged along the conveyor belt 6. The height of the baffle 20 is greater than or equal to the diameter of the profile. The distance between two adjacent baffles 20 is greater than or equal to the length of the profile. The baffle 20 and the side plate enclose the profile to play a limiting role. The conveyor belt 6 may be connected to a stepper motor, and the stepping stroke is the distance between two adjacent baffles 20. The profile intermittently falls into the conveyor belt 6 through the screening mechanism, and the conveyor belt 6 moves step by step to achieve an intermittent transportation effect.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material receiving device for composite processing of profiles, comprising a horizontally arranged bottom plate, a material screening mechanism for accommodating profiles is arranged above the bottom plate, a material selection mechanism and a transportation mechanism are arranged in sequence below the bottom plate, the bottom plate is provided with a through material port, the material screening mechanism is connected with the material selection mechanism through the material port, and is characterized in that: The screening mechanism includes a feeding frame slidably connected to the bottom plate, and a vibration motor driving the feeding frame to vibrate left and right. The top of the feeding frame is open, and the bottom of the feeding frame is connected to the material port. The material selection mechanism includes a feed hole connected to the material port, a discharge hole offset below the feed hole, and a material selection seat capable of switching and closing the feed hole and the discharge hole, wherein the material selection seat is provided with material selection holes corresponding to the feed hole and the discharge hole; The transport mechanism comprises a conveyor belt located below the discharge hole and a pusher block slidably arranged at the end of the conveyor belt.

2. A material receiving device for composite processing of profiles according to claim 1, characterized in that: The material selection mechanism includes a feed seat and a discharge seat arranged up and down, a plurality of feed plates are arranged at intervals on the feed seat, and a discharge seat is provided with a discharge plate staggered with the feed plate, the interval between two adjacent feed plates is a feed hole, and the interval between two adjacent discharge plates is a discharge hole.

3. A material receiving device for composite processing of profiles according to claim 2, characterized in that: The top of the feed plate is provided with a guiding inclined surface, the bottom of the feed plate corresponds to the position of the discharge hole, the top of the discharge plate is a flat setting, and the bottom of the discharge plate is provided with a guide sliding surface inclined toward the middle and corresponding to the position of the conveyor belt.

4. A material receiving device for composite processing of profiles according to claim 3, characterized in that: The material selection seat is horizontally slidably connected between the feed seat and the discharge seat, the material selection seat is connected to a material selection cylinder, and the material selection seat is provided with material selection plates that can switch to close the feed hole and the discharge hole, and the material selection hole is between two adjacent material selection plates.

5. A material receiving device for composite processing of profiles according to claim 4, characterized in that: The widths of the feed plate, discharge plate and selection plate are all equal to the diameter of the profile, the widths of the feed hole, discharge hole and selection hole are all equal to the diameter of the profile, and the height of the selection plate is equal to a multiple of the profile diameter.

6. The material receiving device for composite processing of profiles according to claim 1, characterized in that: The transport mechanism comprises a pushing port opened at the end of the conveyor belt, one side of the pushing port is slidably connected to a pushing block, the pushing block is connected to a pushing cylinder, and the other side of the pushing port is connected to a conveying slideway.

7. A material receiving device for composite processing of profiles according to claim 6, characterized in that: A limiting plate extending toward the conveyor belt is provided on the top of the push block, the width of the push block is equal to the length of the profile, and the distance from the bottom of the limiting plate to the surface of the conveyor belt is equal to the diameter of the profile.

8. A material receiving device for composite processing of profiles according to claim 7, characterized in that: The surface of the conveyor belt is provided with a plurality of vertically arranged baffles, which are evenly arranged along the conveyor belt, and the distance between two adjacent baffles is equal to the length of the profile.

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