Profile length measuring equipment

Abstract

The utility model relates to a profile length measuring device comprising a transmission rack which comprises a base, the top of the base is provided with a plurality of driving wheel sets used for driving a profile to move linearly, one end of the base is provided with a first sensor, and the other end of the base is provided with a second sensor; and the measuring assembly comprises a mounting plate fixed at the top of the machine base, the mounting plate is provided with a synchronizing wheel used for converting the linear motion of the section bar into self-rotation motion, and the synchronizing wheel is connected with an encoder. The distance between the first sensor and the second sensor is known, so that the actual length of the profile can be automatically and accurately measured by subtracting the displacement length when the encoder measures that the profile reaches the second sensor from the distance between the first sensor and the second sensor. Automatic measurement is adopted, the measurement process is simplified, the measurement efficiency and the measurement accuracy are improved, and meanwhile the labor cost and the time cost are effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of profile length measurement, and particularly relates to a profile length measurement device. Background Art

[0002] Generally, the lengths of raw materials purchased on the market are designed according to the factory specifications, and the raw materials are measured and cut according to the actual required length during use. Currently, there are two common measurement methods. One is manual measurement with the help of traditional measurement tools, and the other is measurement with a measuring instrument.

[0003] Manual measurement is carried out with tools such as a tape measure and a vernier caliper. Although this measurement method is relatively convenient, when high accuracy is required, its measurement speed is slow, and it is difficult for ordinary operators to achieve relatively high precision. Moreover, for different operators, the reading angle will also affect the final measurement result.

[0004] The measuring instrument uses an image projector for measurement. Although this measurement method has high precision, the measurement process is complex, the speed is slow, and high requirements are imposed on the operator.

[0005] It can be seen that the existing methods for measuring raw materials have the following defects: (1) Manual measurement has certain errors, poor accuracy, and consumes time and labor costs, resulting in low work efficiency; (2) Measuring with a measuring instrument has a complex measurement process, slow speed, and high requirements for the operator. Summary of the Invention

[0006] The embodiments of this application provide a profile length measurement device to solve the problems of poor measurement accuracy, and time and labor cost consumption in the manual measurement of the length of profiles in related technologies.

[0007] The first aspect of the embodiments of this application provides a profile length measurement device, including:

[0008] A transmission bench, the transmission bench includes a machine base, a plurality of driving wheel sets for driving the profile to move linearly are arranged on the top of the machine base, a first sensor is arranged at one end of the machine base, and a second sensor is arranged at the other end of the machine base;

[0009] A measurement component, the measurement component includes a mounting plate fixed on the top of the machine base, a synchronous pulley for converting the linear motion of the profile into its own rotational motion is arranged on the mounting plate, and the synchronous pulley is connected with an encoder.

[0010] In some embodiments, the drive wheel set includes a rotating shaft rotatably connected to the machine base through a bearing block. A drive wheel and a sprocket are coaxially and fixedly connected to the rotating shaft. The sprockets of adjacent two drive wheel sets are synchronously rotationally connected through a transmission chain. A drive motor is connected to the rotating shaft of any one of the drive wheel sets.

[0011] In some embodiments, both the first sensor and the second sensor are electrically connected to the drive motor through a controller. When the first sensor detects the profile, the drive motor drives multiple drive wheel sets to drive the profile to move towards the direction of the second sensor. When the second sensor detects the profile, the controller controls the drive motor to stop.

[0012] In some embodiments, the measuring assembly further includes an encoder measuring box slidably connected to the mounting plate in the vertical direction. An encoder bracket is slidably connected inside the encoder measuring box. The synchronous pulley is rotationally connected to the encoder bracket through a pin shaft. The encoder is fixed on the encoder bracket.

[0013] In some embodiments, a sliding rail and a slider that are slidably connected to each other are provided between the encoder measuring box and the mounting plate. The sliding rail is fixed on the mounting plate. The slider is fixedly connected to the encoder measuring box. A first air cylinder for driving the encoder measuring box to reciprocate along the length direction of the sliding rail is provided on the mounting plate.

[0014] In some embodiments, one end of the pin shaft is fixedly connected with a first gear. The input shaft of the encoder is fixedly connected with a second gear meshing with the first gear. A second air cylinder for driving the encoder bracket to move up and down is provided on the encoder measuring box.

[0015] In some embodiments, a notch for the profile to enter is formed on the mounting plate. An idler pulley located below the synchronous pulley is provided in the notch. The idler pulley is rotationally connected to the mounting plate and upwardly rotationally supports the linear movement of the profile.

[0016] In some embodiments, it further includes a feeding bench. The feeding bench is located on one side of the transmission bench and its height gradually decreases in the direction approaching the transmission bench. A limiting plate for preventing the profile from rolling is provided on the feeding bench.

[0017] A feeding mechanism is provided on the machine base. The feeding mechanism includes multiple groups of feeding plates rotationally connected to the machine base and a linkage mechanism for driving the feeding plates to flip. One end of the feeding plate partially extends into the feeding bench. A limiting groove for guiding the profile onto the drive wheel set is formed on the feeding plate.

[0018] In some embodiments, the feeding plate is connected with a turning shaft, the turning shaft is rotatably connected to the machine base through a bearing seat, the linkage mechanism includes a transmission rod, a swing arm fixedly connected to one end of each turning shaft is rotatably connected to the transmission rod, and the transmission rod is connected with a third air cylinder for driving each feeding plate to turn over.

[0019] In the second aspect of the embodiments of the present application, a measurement method for the length of a profile is provided. The method uses the profile length measurement device described in any of the above embodiments. The method includes:

[0020] Place the profile to be measured on the feeding table frame. The linkage mechanism drives the feeding plate to turn from a horizontal state to a vertical state, lift a profile and enter the limiting groove.

[0021] After the profile entering the limiting groove freely slides onto the driving wheel set, the driving wheel set drives the profile to move linearly in a direction approaching the first sensor.

[0022] When the first sensor detects the profile, the driving wheel set stops moving. The synchronous wheel moves downward and contacts the profile, and the encoder starts to detect the rotation information of the synchronous wheel.

[0023] The driving wheel set drives the profile to move linearly in a direction approaching the second sensor, and the encoder records the rotation information of the synchronous wheel.

[0024] When the second sensor detects the profile, the driving wheel set stops moving, and the encoder sends the rotation information of the synchronous wheel to the controller.

[0025] The controller converts the rotation information of the synchronous wheel recorded by the encoder into displacement information, and subtracts the displacement information from the distance between the first sensor and the second sensor to obtain the length of the profile.

[0026] The beneficial effects brought by the technical solution provided by the present application include:

[0027] The embodiments of the present application provide a profile length measurement device. Since the profile length measurement device of the present application is provided with a transmission table frame, the transmission table frame includes a machine base, a plurality of driving wheel sets for driving the profile to move linearly are arranged at the top of the machine base, a first sensor is arranged at one end of the machine base, and a second sensor is arranged at the other end of the machine base; a measurement component, the measurement component includes a mounting plate fixed on the top of the machine base, a synchronous wheel for converting the linear motion of the profile into its own rotational motion is arranged on the mounting plate, and the synchronous wheel is connected with an encoder.

[0028] Therefore, after the profile length measuring device of the present application places the profile on the driving bench, the driving wheel set of the driving bench first linearly moves the profile to the position of the first sensor and then stops. Then, after the synchronous wheel of the measuring assembly presses down the profile, the driving wheel set of the driving bench linearly moves the profile to the position of the second sensor and then stops. The encoder connected to the synchronous wheel can measure the displacement length of the profile when it reaches the second sensor. Since the distance between the first sensor and the second sensor is known, subtracting the displacement length of the profile measured by the encoder when it reaches the second sensor from the distance between the first sensor and the second sensor can automatically and accurately measure the actual length of the profile. The present application adopts automated measurement, simplifies the measurement process, improves measurement efficiency and accuracy, and effectively reduces labor costs and time costs. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is the main structural view of the embodiment of the present application;

[0031] Figure 2 is the top structural view of the embodiment of the present application;

[0032] Figure 3 is Figure 2 the partial enlarged view at A in

[0033] Figure 4 is the side structural view of the embodiment of the present application;

[0034] Figure 5 is the main structural view of the measuring assembly of the embodiment of the present application;

[0035] Figure 6 is the side structural view of the measuring assembly of the embodiment of the present application.

[0036] Reference Signs:

[0037] 100, driving bench; 110, machine base; 111, first sensor; 112, second sensor; 120, driving wheel set; 121, bearing seat; 122, rotating shaft; 123, driving wheel; 124, sprocket; 125, drive chain; 130, loading mechanism; 131, loading plate; 132, turning shaft; 133, swing arm; 134, transmission rod; 135, third cylinder; 136, limit groove;

[0038] 200, Measuring component; 210, Mounting plate; 211, Synchronous pulley; 212, Encoder; 213, Encoder measuring box; 214, First cylinder; 215, Slide rail; 216, Slide block; 217, Encoder bracket; 218, Second cylinder; 219, Idler pulley; 220, Notch; 221, First gear; 222, Second gear;

[0039] 300, Feeding bench; 301, Limiting plate; 400, Profile. Detailed implementation manner

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0041] The embodiments of the present application provide a profile length measuring device, which can solve the problems of poor measurement accuracy, time consumption, and labor cost in the manual measurement of the length of profiles in the related art.

[0042] See Figures 1 to 6 As shown, in the first aspect of the embodiments of the present application, a profile length measuring device is provided, including:

[0043] A transmission bench 100, which includes a machine base 110. The machine base 110 extends along the length direction of the profile 400 and the length of the machine base 110 is greater than the length of the profile 400. A plurality of driving wheel sets 120 for driving the profile 400 to move linearly are provided on the top of the machine base 110, and the plurality of driving wheel sets 120 are arranged at intervals in sequence along the length direction of the machine base 110. A first sensor 111 for detecting the position of the profile 400 is provided at one end of the machine base 110, and a second sensor 112 for detecting the position of the profile 400 is provided at the other end of the machine base 110. The distance between the first sensor 111 and the second sensor 112 is fixed and greater than the length of the profile 400.

[0044] Measuring assembly 200, the measuring assembly 200 includes a mounting plate 210 fixed to the top of the machine base 110. The mounting plate 210 is located at the middle position between the first sensor 111 and the second sensor 112 on the top of the machine base 110. The distance between the mounting plate 210 and the first sensor 111 is less than the length of the profile 400. A synchronous pulley 211 for converting the linear motion of the profile 400 into its own rotational motion is provided on the mounting plate 210. The synchronous pulley 211 is connected to an encoder 212, and the encoder 212 is used to detect the rotation information of the synchronous pulley 211, such as the number of rotation turns or the rotation angle information.

[0045] After the profile length measuring device of the embodiment of the present application places the profile 400 on the driving table frame 100, the driving wheel set 120 of the driving table frame 100 first linearly moves the profile 400 to the position of the first sensor 111 and then stops. Then, after the synchronous pulley 211 of the measuring assembly 200 presses down the profile 400, the driving wheel set 120 of the driving table frame 100 linearly moves the profile 400 to the position of the second sensor 112 and then stops. The encoder 212 connected to the synchronous pulley 211 can measure the displacement length when the profile 400 reaches the second sensor 112.

[0046] Since the distance between the first sensor 111 and the second sensor 112 is known, subtracting the displacement length measured by the encoder 212 when the profile 400 reaches the second sensor 112 from the distance between the first sensor 111 and the second sensor 112 can automatically and accurately measure the actual length of the profile 400. The present application adopts automated measurement, simplifies the measurement process, increases the measurement efficiency and accuracy, and effectively reduces the labor cost and time cost.

[0047] In some alternative embodiments: Refer to Figure 2 and Figure 3 As shown, the embodiment of the present application provides a profile length measuring device. The driving wheel set 120 of the profile length measuring device includes a rotating shaft 122 rotatably connected to the machine base 110 through a bearing seat 121. A driving wheel 123 and a sprocket 124 are coaxially and fixedly connected to the rotating shaft 122. An annular groove for placing the profile 400 is formed on the outer circle of the driving wheel 123, and the profile 400 is linearly moved along a set direction by the driving wheel 123 in the annular groove of the driving wheel 123. The sprockets 124 of two adjacent driving wheel sets 120 are synchronously rotationally connected through a transmission chain 125, and a driving motor is connected to the rotating shaft 122 of any one of the driving wheel sets 120.

[0048] When the profile 400 falls onto the driving wheels 123 of multiple groups of driving wheel sets 120, the driving motor synchronously drives the driving wheels 123 of each driving wheel set 120 to rotate in the reverse direction through the transmission chain 125 and the sprocket 124, and then linearly moves the profile located above the driving wheels 123 to the position of the first sensor 111 to the left. When the first sensor 111 detects the profile 400, the driving motor stops and starts to synchronously drive the driving wheels 123 of each driving wheel set 120 to rotate in the forward direction through the transmission chain 125 and the sprocket 124, and then linearly moves the profile located above the driving wheels 123 to the position of the second sensor 112 to the right.

[0049] In some alternative embodiments: Refer to Figure 2 and Figure 3 As shown, the embodiment of the present application provides a profile length measuring device. The first sensor 111 and the second sensor 112 of the profile length measuring device are both electrically connected to the driving motor through a controller. When the first sensor 111 detects the left end of the profile 400, the first sensor 111 sends a detection signal to the controller, and the controller controls the driving motor to stop rotating. The controller controls the driving motor to drive multiple driving wheel sets 120 to drive the profile 400 to move towards the second sensor 112. When the second sensor 112 detects the right end of the profile 400, the second sensor 112 sends a detection signal to the controller, and the controller controls the driving motor to stop.

[0050] In some alternative embodiments: Refer to Figures 4 to 6 As shown, the measuring assembly 200 of the profile length measuring device provided by the embodiment of the present application further includes an encoder measuring box 213 slidably connected to the mounting plate 210 in the vertical direction. An encoder bracket 217 is slidably connected in the encoder measuring box 213. The synchronous wheel 211 is rotatably connected to the encoder bracket 217 through a pin shaft, and the encoder 212 is fixed to the encoder bracket 217.

[0051] A slide rail 215 and a slider 216 that are slidably connected to each other are provided between the encoder measuring box 213 and the mounting plate 210. The slide rail 215 is fixed to the mounting plate 210, and the slider 216 is fixedly connected to the encoder measuring box 213. The encoder measuring box 213 linearly moves up and down relative to the mounting plate 210 under the guiding action of the slide rail 215 and the slider 216. A first cylinder 214 for driving the encoder measuring box 213 to reciprocate along the length direction of the slide rail 215 is provided on the mounting plate 210.

[0052] When the profile 400 falls onto the driving wheels 123 of multiple groups of driving wheel sets 120, the first cylinder 214 drives the encoder measurement box 213 to move downward along the length direction of the slide rail 215, so that the encoder measurement box 213, the encoder bracket 217, the synchronous pulley 211 and the encoder 212 connected to the encoder measurement box 213 move downward synchronously until the synchronous pulley 211 contacts and presses the profile 400 and then stops. After the length of the profile 400 is measured, the first cylinder 214 drives the encoder measurement box 213 to move upward along the length direction of the slide rail 215, so that the synchronous pulley 211 disengages from the profile 400.

[0053] In some alternative embodiments: Refer to Figures 4 to 6 As shown, the embodiment of the present application provides a profile length measuring device. One end of the pin shaft of the profile length measuring device is fixedly connected with a first gear 221, the input shaft of the encoder 212 is fixedly connected with a second gear 222 meshing with the first gear 221, and a second cylinder 218 for driving the encoder bracket 217 to move up and down is arranged on the encoder measurement box 213. A long hole connected to the encoder measurement box 213 is arranged on the encoder bracket 217, and a limit pin penetrating into the long hole is arranged on the encoder measurement box 213. The second cylinder 218 can make the encoder bracket 217 move up and down along the length direction of the long hole, thereby floatingly adjusting the position height of the synchronous pulley 211.

[0054] A notch 220 for the profile 400 to enter is formed on the mounting plate 210. An idler wheel 219 is arranged below the synchronous pulley 211 in the notch 220. The idler wheel 219 is rotatably connected to the mounting plate 210 and rotatably supports the linear movement of the profile 400 upward. The notch 220 on the mounting plate 210 is used for the profile 400 to fall onto the top of the idler wheel 219. The idler wheel 219 is used for rotatably supporting the profile 400 upward, and the idler wheel 219 is directly below the synchronous pulley 211, so that the idler wheel 219 and the synchronous pulley 211 jointly clamp the profile 400 and move linearly along the set direction.

[0055] In some alternative embodiments: Refer to Figures 2 to 4 As shown, the embodiment of the present application provides a profile length measuring device. The profile length measuring device further includes a feeding bench 300. The feeding bench 300 is located on one side of the transmission bench 100 and its height gradually decreases in the direction approaching the transmission bench 100, so that the profile 400 on the feeding bench 300 rolls towards the transmission bench 100 by itself. A limit plate 301 for preventing the profile 400 from rolling is arranged on the side of the feeding bench 300 close to the transmission bench 100.

[0056] A feeding mechanism 130 is provided on the machine base 110. The feeding mechanism 130 includes multiple groups of feeding plates 131 rotatably connected to the machine base 110 and a linkage mechanism for driving the feeding plates 131 to flip. One end of the feeding plate 131 partially extends into the feeding table frame 300, and a limiting groove 136 for guiding the profile 400 onto the driving wheel set 120 is formed on the feeding plate 131. The limiting groove 136 is of a "V" - shaped structure.

[0057] When the feeding plate 131 is a steel plate with a set thickness, when the linkage mechanism drives the feeding plate 131 to flip to the horizontal state, one end of the feeding plate 131 is located below the closest profile 400 to the transmission table frame 100. When the linkage mechanism drives the feeding plate 131 to flip from the horizontal state to the vertical state, one end of the feeding plate 131 lifts the closest profile 400 to the transmission table frame 100, and under the guiding action of the limiting groove 136, the profile 400 slides onto the driving wheel set 120 on the machine base 110.

[0058] In some alternative embodiments: Refer to Figure 3 and Figure 4 As shown, an embodiment of the present application provides a profile length measuring device. The feeding plate 131 of the profile length measuring device is connected with a turning shaft 132. The turning shaft 132 is rotatably connected to the machine base 110 through a bearing seat 121. The linkage mechanism includes a transmission rod 134. A swing arm 133 fixedly connected to one end of each turning shaft 132 is rotatably connected to the transmission rod 134. One end of the transmission rod 134 is connected with a third cylinder 135 for driving each feeding plate 131 to flip.

[0059] Refer to Figures 1 to 6 As shown, a second aspect of the embodiment of the present application provides a measuring method for profile length. The method uses the profile length measuring device described in any of the above - mentioned embodiments. The method includes:

[0060] Step 101: Place the profile 400 to be measured on the feeding table frame 300. The linkage mechanism drives the feeding plate 131 to flip from the horizontal state to the vertical state and lift a profile 400 into the limiting groove 136.

[0061] Step 102: After the profile 400 entering the limiting groove 136 freely slides onto the driving wheel set 120, the linkage mechanism drives the feeding plate 131 to flip from the vertical state to the horizontal state, and the driving wheel set 120 drives the profile 400 to move linearly in the direction approaching the first sensor 111.

[0062] Step 103: When the first sensor 111 detects the profile 400, the driving wheel set 120 stops moving. The synchronous wheel 211 moves downward and contacts the profile 400, and the encoder 212 starts to detect the rotation information of the synchronous wheel 211.

[0063] Step 104: The driving wheel set 120 drives the profile 400 to move linearly in the direction approaching the second sensor 112. The synchronous wheel 211 converts the linear motion of the profile 400 into its own rotational motion, and the encoder 212 records the rotational information of the synchronous wheel 211.

[0064] Step 105: When the second sensor 112 detects the profile 400, the driving wheel set 120 stops moving, and the encoder 212 sends the rotational information of the synchronous wheel 211 to the controller.

[0065] Step 106: The controller converts the rotational information of the synchronous wheel 211 recorded by the encoder 212 into displacement information, and subtracts the displacement information from the distance between the first sensor 111 and the second sensor 112 to obtain the length of the profile 400.

[0066] Working principle

[0067] The embodiment of the present application provides a profile length measuring device. Since the profile length measuring device of the present application is provided with a transmission bench 100, the transmission bench 100 includes a machine base 110. A plurality of driving wheel sets 120 for driving the linear motion of the profile 400 are provided on the top of the machine base 110. A first sensor 111 is provided at one end of the machine base 110, and a second sensor 112 is provided at the other end of the machine base 110; a measuring assembly 200, the measuring assembly 200 includes a mounting plate 210 fixed on the top of the machine base 110. A synchronous wheel 211 for converting the linear motion of the profile 400 into its own rotational motion is provided on the mounting plate 210, and the synchronous wheel 211 is connected with an encoder 212.

[0068] Therefore, after the profile 400 is placed on the transmission bench 100 of the present application, the driving wheel set 120 of the transmission bench 100 first linearly moves the profile 400 to the position of the first sensor 111 and then stops. Then, after the synchronous wheel 211 of the measuring assembly 200 presses down the profile 400, the driving wheel set 120 of the transmission bench 100 linearly moves the profile 400 to the position of the second sensor 112 and then stops. The encoder 212 connected to the synchronous wheel 211 can measure the displacement length when the profile 400 reaches the second sensor 112.

[0069] Since the distance between the first sensor 111 and the second sensor 112 is known, subtracting the displacement length when the profile 400 reaches the second sensor 112 measured by the encoder 212 from the distance between the first sensor 111 and the second sensor 112 can automatically and accurately measure the actual length of the profile 400. The present application adopts an automated measurement, simplifies the measurement process, improves the measurement efficiency and accuracy, and effectively reduces the labor cost and time cost.

[0070] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0071] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0072] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A profile length measuring device, characterized in that, Including: A transmission bench (100), the transmission bench (100) includes a machine base (110), a plurality of driving wheel sets (120) for driving the straight-line movement of the profile (400) are arranged on the top of the machine base (110), a first sensor (111) is arranged at one end of the machine base (110), and a second sensor (112) is arranged at the other end of the machine base (110); A measuring component (200), the measuring component (200) includes a mounting plate (210) fixed on the top of the machine base (110), a synchronous pulley (211) for converting the straight-line movement of the profile (400) into its own rotational movement is arranged on the mounting plate (210), and the synchronous pulley (211) is connected with an encoder (212).

2. The profile length measuring device according to claim 1, wherein: The driving wheel set (120) includes a rotating shaft (122) rotatably connected to the machine base (110) through a bearing seat (121), a driving wheel (123) and a sprocket (124) are coaxially and fixedly connected to the rotating shaft (122), the sprockets (124) of adjacent two driving wheel sets (120) are synchronously rotationally connected through a transmission chain (125), and a driving motor is connected to the rotating shaft (122) of any one of the driving wheel sets (120).

3. The profile length measuring device according to claim 2, wherein: Both the first sensor (111) and the second sensor (112) are electrically connected to the driving motor through a controller. When the first sensor (111) detects the profile (400), the driving motor drives a plurality of driving wheel sets (120) to drive the profile (400) to move towards the second sensor (112). When the second sensor (112) detects the profile (400), the controller controls the driving motor to stop.

4. The profile length measuring device according to claim 1, wherein: The measuring component (200) further includes an encoder measuring box (213) slidably connected to the mounting plate (210) in the vertical direction. An encoder bracket (217) is slidably connected in the encoder measuring box (213). The synchronous pulley (211) is rotatably connected to the encoder bracket (217) through a pin shaft, and the encoder (212) is fixed on the encoder bracket (217).

5. The profile length measuring device according to claim 4, wherein: A slide rail (215) and a slider (216) which are slidably connected to each other are arranged between the encoder measuring box (213) and the mounting plate (210). The slide rail (215) is fixed on the mounting plate (210), the slider (216) is fixedly connected to the encoder measuring box (213), and a first cylinder (214) for driving the encoder measuring box (213) to reciprocate along the length direction of the slide rail (215) is arranged on the mounting plate (210).

6. The profile length measuring device according to claim 4, wherein: One end of the pin shaft is fixedly connected to a first gear (221), an input shaft of the encoder (212) is fixedly connected to a second gear (222) meshing with the first gear (221), and a second cylinder (218) for driving the encoder bracket (217) to move up and down is provided on the encoder measuring box (213).

7. The profile length measuring device according to claim 1, characterized in that: A notch (220) for the profile (400) to enter is formed on the mounting plate (210), an idler wheel (219) is arranged below the synchronous wheel (211) in the notch (220), and the idler wheel (219) is rotatably connected to the mounting plate (210) and rotatably supports the linear movement of the profile (400) upward.

8. The profile length measuring device according to claim 1, characterized in that: It further includes a feeding bench (300), the feeding bench (300) is located on one side of the transmission bench (100) and its height gradually decreases in the direction approaching the transmission bench (100), and a limiting plate (301) for preventing the profile (400) from rolling is provided on the feeding bench (300); A feeding mechanism (130) is provided on the machine base (110), the feeding mechanism (130) includes a plurality of feeding plates (131) rotatably connected to the machine base (110), and a linkage mechanism for driving the feeding plates (131) to turn over; One end of the feeding plate (131) partially extends into the feeding bench (300), and a limiting groove (136) for guiding the profile (400) onto the driving wheel set (120) is formed on the feeding plate (131).

9. The profile length measuring device according to claim 8, characterized in that: The feeding plate (131) is connected to a turning shaft (132), the turning shaft (132) is rotatably connected to the machine base (110) through a bearing seat (121), the linkage mechanism includes a transmission rod (134), a swing arm (133) fixedly connected to one end of each turning shaft (132) is rotatably connected to the transmission rod (134), and the transmission rod (134) is connected to a third cylinder (135) for driving each feeding plate (131) to turn over.

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