Clamping device with large clamping range

Abstract

The utility model relates to the technical field of clamps, in particular to a clamping device with a large clamping range, which comprises a rack, a linear displacement unit, two groups of clamping end components and a clamping power part, the clamping end components are fixedly connected to the output end of the clamping power part, and the linear displacement unit is arranged on the rack. The linear displacement unit controls the clamping power part to slide on the rack, the clamping power part comprises a clamping motor, the clamping motor is fixedly connected to the linear displacement unit, and a driving wheel is fixed to the output end of the clamping motor; the driven wheel is rotationally connected to the linear displacement unit; the synchronous belt is arranged on the driving wheel and the driven wheel in a sleeving mode, and the two end clamping assemblies are fixed to the two sections, opposite in moving direction, of the synchronous belt correspondingly; the clamping device has the advantages of being large in clamping range and capable of being matched with iron buckets of various sizes.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping device with a large clamping range. Background Technology

[0002] The production process of rolling iron plates into iron drums involves multiple steps, including feeding, forming, welding, coating, sealing, leak testing, and stacking. In some steps, such as sealing and leak testing, the rolled iron drums need to be directionally transported to a preset station. In this process, a stop structure is first used to block the flow of the iron drums, and then a clamping structure is used to clamp the stopped iron drums to the preset station.

[0003] The current clamping structure operates by using a cylinder to drive a clamping plate to hold the iron drum. When clamping the rolled iron drum, the cylinder's output shaft extends, driving the clamping plate to hold the drum. A linear displacement structure moves the clamping plate, cylinder, and rolled iron drum to a preset position. The cylinder's output shaft then retracts, releasing the drum. While this clamping structure can quickly clamp rolled iron drums, it has some drawbacks. For example, due to the use of a cylinder, the clamping range is narrow, affecting the production specifications of the iron drum. Therefore, this application proposes a clamping device with a larger clamping range. Utility Model Content

[0004] The purpose of this invention is to provide a clamping device with a large clamping range to solve the problem of narrow clamping range in the current clamping structure for rolled iron drums.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A clamping device with a large clamping range includes a frame, a linear displacement unit, clamping end assemblies, and a clamping power unit. Two sets of clamping end assemblies are provided, and each clamping end assembly is fixedly connected to the output end of the clamping power unit. The linear displacement unit controls the clamping power unit to slide on the frame. The clamping power unit includes:

[0007] A clamping motor is fixedly connected to the linear displacement unit, and a drive wheel is fixed to the output end of the clamping motor;

[0008] Driven wheel, the driven wheel being rotatably connected to the linear displacement unit;

[0009] A timing belt is fitted onto the driving pulley and the driven pulley, and two clamping end assemblies are respectively fixed to two segments of the timing belt that move in opposite directions.

[0010] Furthermore, a first track is fixedly connected to the frame, and a first slider slides on the first track. The linear displacement unit includes:

[0011] The skateboard has a flat plate structure, the first slider is fixedly connected to the skateboard, and the skateboard is connected to the frame;

[0012] A linear drive unit, the output end of which is connected to the slide plate to drive the slide plate to slide, and a clamping power unit is mounted on the slide plate.

[0013] Furthermore, the linear drive unit includes:

[0014] A linear drive motor, which is fixedly connected to the frame;

[0015] A crank and a rotating seat, wherein one end of the crank is fixed to the output end of the linear drive motor, and the end of the crank away from the linear drive motor is rotatably connected to the rotating seat;

[0016] The second slider is fixedly connected to the rotating seat.

[0017] The second track is fixedly connected to the slide plate and is perpendicular to the first track. The second slider is slidably connected to the second track.

[0018] Furthermore, the linear displacement unit also includes:

[0019] The first position detection unit is used to detect the position of the slide plate.

[0020] Furthermore, the linear displacement unit also includes:

[0021] The second position detection unit is used to detect the rotation angle of the output end of the linear drive motor.

[0022] Furthermore, the clamping assembly includes:

[0023] Clamping end;

[0024] A clamping arm assembly is fixedly connected to the timing belt, and the clamping end is fixedly connected to the belt.

[0025] Furthermore, the clamping end includes:

[0026] A clamping plate, which is fixedly connected to the clamping arm assembly by bolts;

[0027] A clamping rod, which is fixedly connected to the clamping plate;

[0028] The chuck is made of soft rubber and is sleeved on the end of the clamping rod away from the clamping plate. There are two clamping rods.

[0029] Furthermore, the clamping power unit also includes:

[0030] The third position detection unit is used to detect the position of the clamping arm assembly.

[0031] Furthermore, the clamping assembly also includes:

[0032] A distance sensor is used to detect the distance between the clamping plate and the rolled iron drum.

[0033] In summary, this utility model has the following advantages compared with the prior art:

[0034] The clamping device with a large clamping range disclosed in this embodiment of the utility model uses a synchronous belt structure to drive the two clamping end components to move closer and further apart, so that the clamping end components clamp the iron bucket. Since the clamping end components are controlled by the synchronous belt structure to clamp the iron bucket, compared with the traditional clamping mechanism, this utility model has the advantages of a large clamping range and can be adapted to a variety of iron bucket sizes. Attached Figure Description

[0035] Figure 1 This is a first-view structural schematic diagram of the clamping device with a large clamping range disclosed in Embodiment 1 of this utility model.

[0036] Figure 2 This is a second-view structural schematic diagram of the clamping device with a large clamping range disclosed in Embodiment 1 of this utility model.

[0037] Figure 3 for Figure 2 A magnified view of a section at point I.

[0038] Figure 4 This is a third-view structural schematic diagram of the clamping device with a large clamping range disclosed in Embodiment 1 of this utility model.

[0039] Figure 5 This is a schematic diagram of the structure of the clamping device with a large clamping range disclosed in Embodiment 2 of this utility model.

[0040] Figure 6 for Figure 5 A magnified view of section II in the middle.

[0041] Figure label:

[0042] 100, Frame; 110, First track; 120, First slider; 200, Linear displacement unit; 210, Slide plate; 220, Linear drive unit; 221, Linear drive motor; 222, Crank; 223, Rotary seat; 224, Second slider; 225, Second track; 230, First position detection unit; 231, First sensor; 232, First follower; 233, First bracket; 240, Second position detection unit; 241, Second sensor; 242, Second follower; 243, Second bracket; 300, Clamping end assembly; 310, Clamping end; 3 11. Clamping plate; 312. Clamping rod; 313. Chuck; 320. Clamping arm assembly; 321. Crossbeam; 322. Connecting arm; 323. Clamping arm; 324. Vertical plate; 325. Clamping plate; 330. Guide assembly; 331. Third guide rail; 332. Third slider; 340. Distance sensor; 400. Clamping power unit; 410. Clamping motor; 420. Drive wheel; 430. Driven wheel; 440. Synchronous belt; 450. Clamping bracket; 460. Third position detection unit; 461. Third sensor; 462. Third follower; 463. Third bracket. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0044] Example 1

[0045] like Figures 1 to 4As shown, one embodiment of this utility model provides a clamping device with a large clamping range. The clamping device includes a frame 100, a linear displacement unit 200, a clamping end assembly 300, and a clamping power unit 400. Two sets of clamping end assemblies 300 are provided, and each clamping end assembly 300 is fixedly connected to the output end of the clamping power unit 400. The clamping power unit 400 controls the two sets of clamping end assemblies 300 to move closer or further apart to achieve clamping and releasing actions. The clamping power unit 400 is slidably connected to the frame 100 and fixedly connected to the output end of the linear displacement unit 200. The linear displacement unit 200 controls the clamping power unit 400 to slide on the frame 100. The clamping power unit 400 includes a clamping motor 410, a driving wheel 420, a driven wheel 430, and a synchronous belt 440. The clamping motor 410 is fixedly connected to the linear displacement unit 200. The driving wheel 420 and the driven wheel 430 are rotatably connected to the linear displacement unit 200. The synchronous belt 440 is sleeved on the driving wheel 420 and the driven wheel 430. The output shaft of the clamping motor 410 is fixedly connected to the driving wheel 420 to drive it to rotate. The two clamping end assemblies 300 are respectively fixed to two segments of the synchronous belt 440 with opposite directions of movement, so that when the synchronous belt 440 rotates, it drives the clamping end assemblies 300 to move closer or further away from each other to achieve the function of clamping or releasing.

[0046] In this embodiment, when transferring the iron drum, the linear displacement unit 200 controls the clamping power unit 400 and the clamping end assembly 300 to move to a preset position. The clamping power unit 400 controls the two clamping end assemblies 300 to move closer to each other to clamp the iron drum. After the clamping end assembly 300 clamps the drum, the linear displacement unit 200 drives the clamping end assembly 300 and the clamping power unit 400 to move to a preset workstation. The clamping power unit 400 controls the two clamping end assemblies 300 to move further away from each other to release the iron drum, so that the iron drum is placed in the preset position. Since the clamping power unit 400 is a conveyor belt structure, and the two clamping end assemblies 300 are respectively fixed to two segments of the synchronous belt 440 with opposite directions of movement, the clamping end assemblies 300 can move as close as possible to each other and as far as to the two ends of the waist-shaped structure formed by the synchronous belt 440. Compared with the traditional cylinder-driven clamping structure, this application has a larger clamping range.

[0047] The clamping device with a large clamping range disclosed in this embodiment of the utility model uses a synchronous belt structure to drive the two clamping end components 300 to move closer and further apart, so that the clamping end components 300 clamp the iron bucket. Since the clamping end components 300 are controlled by the synchronous belt structure to clamp the iron bucket, compared with the traditional clamping mechanism, this utility model has the advantages of a large clamping range and can be adapted to a variety of iron bucket sizes.

[0048] Specifically, in this embodiment, the frame 100 is fixed by square tubes or profiles. For example, in this embodiment, the frame 100 is a frame structure. A first track 110 is fixedly connected to the frame 100 by bolts. A first slider 120 is slidably connected on the first track 110. The linear displacement unit 200 includes a slide plate 210 and a linear drive unit 220. The slide plate 210 is a flat plate structure. The first slider 120 is fixedly connected to the slide plate 210 by screws. The slide plate 210 is connected to the frame 100. The output end of the linear drive unit 220 is connected to the slide plate 210 to drive the slide plate 210 to slide. The clamping power unit 400 is installed on the slide plate 210. The clamping power unit 400 moves linearly along the slide plate 210. In this embodiment, the first track 110 is an I-shaped guide rail in the prior art, and the first slider 120 is a slider structure that cooperates with it.

[0049] As a preferred embodiment of this example, Figure 1 and Figure 2As shown, the linear drive unit 220 includes a linear drive motor 221, a crank 222, a rotating seat 223, a second slider 224, and a second track 225. The linear drive motor 221 is fixedly connected to the frame 100. If the frame 100 has a plate-shaped mounting structure (not shown in the figure), the linear drive motor 221 is fixedly connected to the plate-shaped mounting structure by bolts. The linear drive motor 221 is a geared motor. One end of the crank 222 is fixedly connected to the output end of the linear drive motor 221 by a thread or key shaft. The end of the crank 222 away from the linear drive motor 221 is rotatably connected to the rotating seat 223 through a bushing or bearing structure. The seat 223 and the second slider 224 are fixedly connected by screws. The second track 225 is fixedly connected to the slide plate 210. The second track 225 is perpendicular to the first track 110. The second slider 224 is slidably connected to the second track 225. When the linear drive motor 221 is energized and rotates, the linear drive motor 221 drives the second slider 224 to slide on the second track 225. As the second slider 224 slides on the second track 225, the second track 225 gradually moves closer to or further away from the linear drive motor 221, thereby driving the slide plate 210 to move in a straight line on the first track 110 through the second track 225.

[0050] In a preferred embodiment of this invention, the linear displacement unit 200 further includes a first position detection unit 230, which is used to detect the position of the slide plate 210, such as... Figure 1 As shown, in this embodiment, the first position detection unit 230 includes a first sensor 231, a first follower 232, and a first bracket 233. The first sensor 231 is fixedly connected to a preset position on the frame 100 via the first bracket 233. The first follower 232 is fixedly connected to the slide plate 210. The principle for setting the first sensor 231 is that when the slide plate 210 moves to the position to be detected, the first follower 232 follows the slide plate 210 to the detection end of the first sensor 231. The first sensor 231 is a proximity sensor, the first follower 232 is an iron sheet structure, and the first follower 232 is fixedly connected to the slide plate 210 by screws. The first bracket 233 is an L-shaped iron sheet, and the first bracket 233 is fixedly connected to the slide plate 210 and the frame 100 by screws. The number of first sensors 231 is set based on the number of positions to be detected on the slide plate 210.

[0051] Preferably, in this embodiment, the first sensor 231 is a sensor structure based on the Hall effect principle, and the first sensor 231 is a magnet or iron sheet.

[0052] As a preferred embodiment of this example, Figure 2 and Figure 3 As shown, the linear displacement unit 200 further includes a second position detection unit 240 for detecting the rotation angle of the output end of the linear drive motor 221. The second position detection unit 240 includes a second sensor 241, a second follower 242, and a second bracket 243. The second sensor 241 is fixedly connected to the frame 100 via the second bracket 243, and the second follower 242 is fixedly connected to the linear drive motor 221. The second bracket 243 is a sensor mounting structure in the prior art, such as an L-shaped structure with holes. The second bracket 243 is fixedly connected to the frame 100 by bolts. The second follower 242 is a nut structure. When the second follower 242 passes through the second sensor 241, it causes the second sensor 241 to generate a current change. In this embodiment, the second sensor 241 and the first sensor 231 have the same structure.

[0053] like Figure 4 As shown, the clamping end assembly 300 includes a clamping end 310, a clamping arm assembly 320, and a guide assembly 330. The clamping arm assembly 320 has a plate-like structure and is fixedly connected to the synchronous belt 440 by clamping. In this embodiment, the clamping arm assembly 320 includes a crossbeam 321, a connecting arm 322, a clamping arm 323, a vertical plate 324, and a clamping plate 325. The crossbeam 321 is used to connect multiple clamping ends 310, so that the clamping ends 310 on the same side are all fixed to the synchronous belt 440. On the crossbeam 321, the connecting arm 322 is fixedly connected to the crossbeam 321. Multiple connecting arms 322 are provided. The connecting arm 322 is fixedly connected to the clamping arm 323 through the upright plate 324. The connecting arm 322 is perpendicular to the upright plate 324. The clamping plate 325 is fixedly connected to the clamping arm 323 by bolts. The clamping plate 325 and the clamping arm 323 clamp the synchronous belt 440, so that the clamping arm assembly 320 can rotate with the synchronous belt 440.

[0054] The guide assembly 330 includes a third guide rail 331 and a third slider 332. The third guide rail 331 is fixedly connected to the slide plate 210, and the third slider 332 is slidably connected to the third guide rail 331. The third slider 332 is fixedly connected to the clamping arm 323.

[0055] In this embodiment, the fixed connection between the clamping arm assembly 320 and the guide assembly 330 can be achieved by bolts or welding.

[0056] As a preferred implementation method in this embodiment, such as Figure 4 As shown, the clamping end 310 includes a clamping plate 311, a clamping rod 312, and a chuck 313. The clamping plate 311 is a plate-shaped structure and is fixedly connected to the crossbeam 321 by bolts. The clamping rod 312 is fixedly connected to the clamping plate 311 by a threaded structure. The chuck 313 is made of soft rubber, such as a rubber sleeve. The chuck 313 is sleeved on the end of the clamping rod 312 away from the clamping plate 311. There are two clamping rods 312. When clamping the rolled iron drum, the two clamping rods 312 are located on both sides of the center line of the rolled iron drum. In this embodiment, one or more clamping plates 311 are provided on the crossbeam 321.

[0057] In this embodiment, a clamping bracket 450 is fixedly connected to the slide plate 210 by bolts. The clamping bracket 450 is a square block. The clamping motor 410 is fixedly connected to the clamping bracket 450 by bolts. The driven wheel 430 is rotatably connected to the clamping bracket 450.

[0058] As a preferred implementation method in this embodiment, such as Figure 4 As shown, the clamping power unit 400 also includes a third position detection unit 460, which is used to detect the position of the crossbeam 321 and prevent the crossbeam 321 from exceeding the limit position. The third position detection unit 460 includes a third sensor 461, a third follower 462, and a third bracket 463. The third sensor 461 is fixedly connected to the slide plate 210 through the third bracket 463, and the third follower 462 is fixedly connected to the crossbeam 321. The structure of the third sensor 461 is the same as that of the first sensor 231. The third bracket 463 is prior art, and the third follower 462 is an iron sheet.

[0059] Example 2

[0060] like Figure 5 and Figure 6 As shown, as another embodiment of the present invention, this embodiment differs from Embodiment 1 in that the clamping end assembly 300 further includes:

[0061] A distance sensor 340 is used to detect the distance between the clamping plate 311 and the rolled iron drum to prevent excessive clamping force. The distance sensor 340 is existing technology, such as an ultrasonic distance detection structure. The distance sensor 340 is fixedly connected to the clamping plate 311 and is located between the two clamping rods 312. Since the clamping rods 312 are made of soft rubber, they are compressed during clamping. The amount of compression of the clamping rods 312 increases with the magnitude of the compression force, and the compression force is the same as the clamping force. Therefore, by detecting the distance between the guide assembly 330 and the iron drum, the magnitude of the clamping force can be estimated to prevent the iron drum from deforming.

[0062] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0063] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping device with a large clamping range, the clamping device comprising a frame (100), a linear displacement unit (200), a clamping end assembly (300), and a clamping power unit (400), wherein two sets of clamping end assemblies (300) are provided, the clamping end assemblies (300) are fixedly connected to the output end of the clamping power unit (400), and the linear displacement unit (200) controls the clamping power unit (400) to slide on the frame (100), characterized in that, The clamping power unit (400) includes: A clamping motor (410) is fixedly connected to the linear displacement unit (200), and a drive wheel (420) is fixed to the output end of the clamping motor (410). Driven wheel, the driven wheel (430) is rotatably connected to the linear displacement unit (200); A timing belt (440) is fitted onto the driving pulley (420) and the driven pulley (430), and two clamping end assemblies (300) are respectively fixed to two segments of the timing belt (440) with opposite directions of movement.

2. The clamping device with a large clamping range according to claim 1, characterized in that, A first track (110) is fixedly connected to the frame (100), and a first slider (120) slides on the first track (110). The linear displacement unit (200) includes: The slide (210) is a flat plate structure, the first slider (120) is fixedly connected to the slide (210), and the slide (210) is connected to the frame (100); A linear drive unit (220) is provided, the output end of which is connected to the slide plate (210) to drive the slide plate (210) to slide, and a clamping power unit (400) is mounted on the slide plate (210).

3. The clamping device with a large clamping range according to claim 2, characterized in that, The linear drive unit (220) includes: A linear drive motor (221) is fixedly connected to the frame (100); A crank (222) and a rotating seat (223), one end of the crank (222) is fixed to the output end of the linear drive motor (221), and the end of the crank (222) away from the linear drive motor (221) is rotatably connected to the rotating seat (223); The second slider (224) is fixedly connected to the rotating seat (223); The second track (225) is fixedly connected to the slide plate (210). The second track (225) is perpendicular to the first track (110). The second slider (224) is slidably connected to the second track (225).

4. The clamping device with a large clamping range according to claim 3, characterized in that, The linear displacement unit (200) further includes: The first position detection unit (230) is used to detect the position of the slide plate (210).

5. The clamping device with a large clamping range according to claim 3, characterized in that, The linear displacement unit (200) further includes: The second position detection unit (240) is used to detect the rotation angle of the output end of the linear drive motor (221).

6. The clamping device with a large clamping range according to any one of claims 1-5, characterized in that, The clamping assembly (300) includes: Clamping end (310); A clamping arm assembly (320) is fixedly connected to the timing belt (440), and a clamping end (310) is fixedly connected to the (320).

7. The clamping device with a large clamping range according to claim 6, characterized in that, The clamping end (310) includes: A clamping plate (311) is bolted to the clamping arm assembly (320); A clamping rod (312) is fixedly connected to the clamping plate (311); The chuck (313) is made of soft rubber and is sleeved on the end of the clamping rod (312) away from the clamping plate (311). There are two clamping rods (312).

8. The clamping device with a large clamping range according to claim 6, characterized in that, The clamping power unit (400) also includes: The third position detection unit (460) is used to detect the position of the clamping arm assembly (320).

9. The clamping device with a large clamping range according to claim 7, characterized in that, The clamp assembly (300) further includes: A distance sensor (340) is used to detect the distance between the clamping plate (311) and the rolled iron drum.

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