Clamping device and steel mesh measuring machine

Abstract

The utility model relates to a clamping device and a steel mesh measuring machine, two ends of a track rod synchronously move up and down in parallel through the synchronous rotation of two groups of rotating pieces, the two ends of the track rod are simultaneously clamped, and the clamping effect is better. The two sets of rotating pieces are connected through the connecting rod, the connecting rod enables the multiple sets of rotating pieces to synchronously rotate by the same angle, the number of the air cylinders is reduced, and meanwhile parallel up-and-down movement of the rail rod is guaranteed. The abrasion-resistant strip is arranged on the rail rod, scratches caused by friction between the rail and the steel mesh are avoided, the guide wheel is arranged between the rail rod and the steel mesh rail, the guide wheel is higher than the abrasion-resistant strip when the air cylinder does not act, the steel mesh can be conveniently inserted into a clamping area, friction force is smaller, and then the driving device drives the rotating piece to rotate synchronously. Under the action of the guide block, the rail rod can move up and down in parallel to adapt to steel meshes with different thicknesses, the two ends of the rail rod can be clamped, and the steel mesh clamping device can adapt to the steel meshes with different sizes and different thicknesses in cooperation with left-right movement of the steel mesh rail.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping device field, especially a kind of clamping device and steel net measuring machine. BACKGROUND

[0002] Steel net is widely used in SMT production line, and its main function is to help the printing of solder paste;The purpose is to transfer the accurate amount of solder paste to the accurate position on empty PCB, so the width of steel net determines the amount of solder paste on PCB, and the clamping device for clamping steel net plays a decisive role in the width of steel net, and also needs to clamp the steel net.The traditional steel net clamping device uses two cylinders to clamp, which can easily cause one end to clamp and the other end to clamp;At the same time, since the steel net frame is made of aluminum alloy material, obvious scratches can be caused when entering and exiting the track, which affects subsequent use.

[0003] Chinese patent publication No.CN219337469U relates to a synchronous width-adjusting steel net clamping device and steel net measuring machine, which includes a steel net two-end support clamping device for clamping the detected steel net, two steel net two-end support clamping devices are connected by a main width-adjusting slide rail device at both ends, the two steel net two-end support clamping devices slide on the main width-adjusting slide rail device, and each end of the two steel net two-end support clamping devices is connected with a drag chain. The two steel net two-end support clamping devices slide synchronously and in parallel towards or away from each other on the main width-adjusting slide rail device, and two limit seats are arranged on one of the main width-adjusting slide rails. Two symmetrical ball screw devices are used to realize the synchronous width-adjusting movement of the two ends of the steel net two-end support clamping device, and the symmetrical ball screw devices are connected by bevel gears to realize synchronous rotation through synchronous width-adjusting connecting rod devices, so as to avoid the appearance of horn mouth when the steel net clamping device moves. At the same time, the setting of bevel gears also prolongs the service life of rotation transmission and improves the use time of the machine. The patent uses cylinders to lift both ends for clamping, which can easily cause the two cylinders to move asynchronously or have different clamping degrees, resulting in one end clamping and the other end not clamping tightly, which causes the steel net track to be unable to clamp tightly.

[0004] The utility model discloses a kind of steel mesh clamping devices, including base, the top of the base both sides is fixedly installed with slide rail, two groups of slide rail both ends are slidably connected with slide block, the top of two groups of slide block adjacent in longitudinal direction is fixedly connected with limit side plate, the bottom of one end of two groups of limit side plate is fixedly installed with connecting block, the top of base and between two groups of limit side plate clamping steel mesh main body, the other end of two groups of limit side plate is fixedly installed with side baffle, the top of base and between two groups of slide rail inner side are fixedly installed with three groups of support plate with equal spacing, the top of the inner side of each group of support plate and the edge of steel mesh main body bottom is equipped with clamping piece, the utility model discloses by design improves the practicality and convenience of existing steel mesh clamping device. Utility model content

[0005] The utility model discloses a kind of steel mesh clamping devices, including base, the top of the base both sides is fixedly installed with slide rail, two groups of slide rail both ends are slidably connected with slide block, the top of two groups of slide block adjacent in longitudinal direction is fixedly connected with limit side plate, the bottom of one end of two groups of limit side plate is fixedly installed with connecting block, the top of base and between two groups of limit side plate clamping steel mesh main body, the other end of two groups of limit side plate is fixedly installed with side baffle, the top of base and between two groups of slide rail inner side are fixedly installed with three groups of support plate with equal spacing, the top of the inner side of each group of support plate and the edge of steel mesh main body bottom is equipped with clamping piece, the utility model discloses by design improves the practicality and convenience of existing steel mesh clamping device.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of clamping device is constructed, including two groups of oppositely arranged clamping tracks, and the slide rail track connected to the two ends of the two groups of clamping tracks, the clamping track includes fixed clamping arm, and movable clamping arm corresponding to fixed clamping arm, the fixed clamping arm and movable clamping arm form clamping area between them, and the clamping device further includes driving device, and rotating member connected with movable clamping arm, the rotating member rotates under the action of driving device and drives movable clamping arm to move up and down in parallel to change the height of clamping area.

[0008] Preferably, the clamping device is provided with at least two groups of rotating members, and the at least two groups of rotating members are connected to the movable clamping arm at both ends of the movable clamping arm, the at least two groups of rotating members rotate the same angle under the action of driving device and drive both ends of the movable clamping arm to move up and down simultaneously to make the movable clamping arm move up and down in parallel.

[0009] Preferably, the at least two groups of rotating members are connected by connecting rod, and the driving device is provided as a group, wherein the first rotating member rotates under the action of driving device and drives the connecting rod to move, the connecting rod is connected with other rotating members and makes other rotating members rotate the same angle as the first rotating member under the action of the connecting rod.

[0010] Preferably, the rotating member comprises a force receiving end in contact with the driving device or connecting rod, and a driven end connected with the movable clamping, a rotating shaft is arranged between the force receiving end and the driven end, a synchronous block is further arranged on the force receiving end, the synchronous block is connected with the connecting rod, and the driving device or the connecting rod drives the force receiving end to rotate along the rotating shaft and drives the driven end to rotate along the rotating shaft.

[0011] Preferably, a limiting wheel is further arranged on the rotating member, the limiting wheel rotates synchronously when the rotating member rotates, a limiting groove is arranged on the movable clamping arm corresponding to the limiting wheel, the limiting wheel moves in the limiting groove and drives the movable clamping arm to move in the up-down direction.

[0012] Preferably, guide blocks are further arranged on both sides of the movable clamping arm, the guide blocks enable the movable clamping arm to move only in a direction perpendicular to the clamping area.

[0013] Preferably, a guide wheel is further arranged between the movable clamping arm and the clamping rail, a wear-resistant strip is arranged on the movable clamping arm, and the height of the guide wheel in the Y direction is higher than the upper surface of the wear-resistant strip when the movable clamping arm is in the initial state.

[0014] Preferably, a reach sensor for detecting the clamping state is further arranged on the movable clamping arm, and the driving device will stop further driving when the reach sensor detects that the clamping is in place.

[0015] Preferably, a plurality of groups of sensors are arranged on the side surface of the clamping rail, the sensors are staggered and distributed at different heights in the Y direction, a width adjusting transmission shaft is further arranged at the lower end of the clamping rail, a rail width adjusting screw is arranged at the lower end of the slide rail, and the rail width adjusting screw is connected with the width adjusting transmission shaft, when the width adjusting transmission shaft rotates, the two groups of rail width adjusting screws are driven to rotate synchronously, and the clamping rail moves synchronously in the same direction or opposite direction on the slide rail.

[0016] A steel mesh measuring machine comprising the clamping device is constructed, and the clamping device clamps and fixes the steel mesh to be processed.

[0017] The utility model discloses an advantageous effect lies in: through the synchronous rotation of two groups of rotators makes the synchronous up and down parallel motion of track bar both ends, to realize the simultaneous clamping of track bar both ends, and the clamping effect is better. Two groups of rotators are connected through connecting rod, and connecting rod makes a plurality of rotators keep synchronous rotation same angle, reduces the number of cylinder, guarantees the parallel up and down motion of track bar simultaneously. And set up wear -resisting strip on track bar to avoid the scratch of track and steel net friction, set up guide wheel between track bar and steel net track, and the height of guide wheel is higher than wear -resisting strip when cylinder does not act, more convenient with steel net is inserted to the clamping area, and the friction is smaller, and then by drive arrangement drive rotator synchronous rotation, and realize the up and down parallel motion of track bar under the action of guide block, to adapt to different thickness's steel net, and both ends can realize clamping, cooperate the left and right movement of steel net track, to make steel net clamping device adapt to different size, different thickness's steel net, and both ends can realize clamping, to facilitate the subsequent process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the utility model will be further described below in combination with the drawings and embodiments, and the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings:

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the steel net clamping device of the preferred embodiment of the utility model,

[0020] Figure 2 It is the front view structure schematic diagram of the steel net track of the preferred embodiment of the utility model,

[0021] Figure 3 It is the structure schematic diagram of the steel net track (initial state) of the preferred embodiment of the utility model,

[0022] Figure 4 It is the structure schematic diagram of the steel net track (clamping state) of the preferred embodiment of the utility model,

[0023] Figure 5 It is the structure schematic diagram of the second rotator (not rotating state) of the preferred embodiment of the utility model,

[0024] Figure 6 It is the structure schematic diagram of the second rotator (rotating state) of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] The clamping device of the preferred embodiment of the utility model; the clamping device is widely used in industry, and it often clamps the workpiece to be processed to facilitate the subsequent machining process, and is commonly used for the clamping of steel mesh by steel mesh measuring machine and other applications. The present application is specifically described by the steel mesh clamping device, as shown in Figure 1 The two groups of steel mesh tracks are connected through the slide rail track 40 at both ends, and the two groups of steel mesh tracks can simultaneously move synchronously on the slide rail track in the same direction or in the opposite direction, so as to change the distance between the steel mesh tracks, thereby adapting to steel meshes of different sizes.

[0027] Specifically, as shown in Figures 1-4 The steel mesh track 10 includes a fixed clamping arm 100 and a track rod 101 arranged below the fixed clamping arm, and a steel mesh clamping area 102 is formed between the track rod and the fixed clamping arm. After the steel mesh is inserted into the steel mesh clamping area, the track rod is moved upward to clamp the steel mesh between the fixed clamping arm and the track rod, and the subsequent process is performed. In order to keep the both ends of the track rod 101 moving upward synchronously at the same speed to clamp the both ends of the steel mesh, a horizontal air cylinder 106 is arranged on the steel mesh track, and a first rotating member 107 and a second rotating member 108 are arranged to connect the both ends of the track rod 101. The first rotating member and the second rotating member rotate by a certain angle at the same time to realize the synchronous parallel movement of the both ends of the track rod toward the fixed clamping arm to clamp the steel mesh.

[0028] Further, as shown in Figures 2-6As shown, the cylinder 106 drives the cylinder shaft 1060 to extend or retract, the cylinder shaft end connects the second rotating member 108, the first rotating member 107 and the second rotating member 108 are connected through the connecting rod 109, the second rotating member includes the force receiving end 1080 connected with the cylinder shaft, and the driven end 1082 connected with the track rod, the force receiving end and the driven end are connected through the rotating shaft 1081, when the cylinder shaft drives the force receiving end to move, the force receiving end will rotate with the rotating shaft as the center, with the distance from the force receiving end to the rotating shaft as the radius, at the same time, the driven end 1082 will rotate with the rotating shaft as the center, with the distance from the driven end to the rotating shaft as the radius, the synchronous block 1084 is further connected on the force receiving end, the synchronous block moves forward and backward with the rotation of the force receiving end, the first rotating member and the second rotating member are the same in structure, the difference is that the second rotating member rotates under the action of the cylinder, while the first rotating member rotates synchronously with the second rotating member under the action of the connecting rod, so that the force receiving ends of the first rotating member and the second rotating member move synchronously and in the same direction in the vertical direction, the limiting wheel 1083 is arranged on the force receiving end, the stroke groove is arranged on the track rod corresponding to the limiting wheel, the stroke groove is arranged in the direction parallel to the track rod, the limiting wheel is arranged in the stroke groove, when the limiting wheel rotates under the action of the rotating member, the track rod will also move synchronously up and down, at the same time, in order to ensure that the track rod moves only in the vertical direction, the track rod is connected with the steel mesh track through the guide block 105 on both sides under the action of the guide block, the left and right direction movement of the track rod is limited, so that the track rod 101 can only move in the vertical direction, and due to the action of the rotating member, parallel up and down movement in the vertical direction can be realized, and the two ends of the steel mesh can be clamped simultaneously. Through the parallelogram mechanism composed of the track rod 101, the connecting rod 109, the first rotating member 107 and the second rotating member 108, when the driving mechanism drives the second rotating member to rotate, the second rotating member transmits the force to the first rotating member through the connecting rod, so that the first rotating member and the second rotating member rotate simultaneously by a certain angle, the first rotating member and the second rotating member are connected with the track rod through the limiting wheel, so that the track rod can be lifted parallel to clamp the steel mesh.

[0029] Further, as Figures 2-4As shown, in order to facilitate the steel mesh into the steel mesh clamping area, the steel mesh track is also provided with a plurality of guide wheels 103, when the cylinder is not driven, the distance between the track rod 101 and the fixed clamping arm 100 is the largest, the height of the guide wheel in the vertical direction is higher than the height of the upper surface of the track rod, and the wear-resistant strip 104 can be arranged on the track rod. After arranging the wear-resistant strip, the upper surface of the track rod can also be lower than the guide wheel. When the steel mesh is inserted into the steel mesh clamping area 102, the steel mesh first contacts the wear-resistant strip and rubs with the wear-resistant strip, which can avoid scratches on the steel mesh caused by contact and friction between the steel mesh and the track rod. After continuously inserting the steel mesh into the steel mesh clamping area, the steel mesh will be placed on the guide wheel 103, and the rolling action of the guide wheel reduces the friction when the steel mesh is inserted, which makes it easier to insert the steel mesh into the steel mesh clamping area. Then under the action of the cylinder, the track rod moves parallel to the fixed clamping arm and pushes the steel mesh towards the fixed clamping arm until the steel mesh is clamped at both ends.

[0030] Further, as shown in the drawings, Figures 2-4 The steel mesh track 10 is provided with a plurality of optical fiber sensors 50 on the side, and the optical fiber sensors are installed in an upper and lower staggered manner, so that the presence or absence of the steel mesh can be sensed for steel meshes of different thicknesses in the track. At the same time, a steel mesh positioning sensor 110 can be arranged on the track rod, and the steel mesh positioning sensor communicates with the cylinder. When the steel mesh positioning sensor detects that the steel mesh is clamped in place, it sends a signal to the cylinder, and the cylinder stops working to clamp the steel mesh.

[0031] Further, as shown in the drawings, Figure 1 The steel mesh clamping device further comprises a width adjusting rotating shaft 20 and a track width adjusting screw 30 connected with the width adjusting rotating shaft. The track width adjusting screw is provided in two groups, and the two groups of track width adjusting screws 30 are respectively connected with the two ends of the steel mesh track 10, and both groups of track width adjusting screws are connected with the two ends of the width adjusting track shaft. When the width adjusting track shaft rotates, it drives the two groups of width adjusting track screws 30 to rotate at the same speed in the same direction, and the two groups of steel mesh tracks move synchronously at the same speed in the same direction or in the opposite direction on the track width adjusting screw 30, so as to adapt to steel meshes of different sizes. The specific structure of the width adjusting transmission shaft and the structure for driving the track width adjusting screw to rotate simultaneously are described in the patent No. CN219337469U, entitled "Synchronous width adjusting steel mesh clamping device and steel mesh measuring machine", which has the same structure and will not be repeated here.

[0032] In use, the width adjustment transmission shaft 20 is first rotated according to the width of the steel mesh to drive the two sets of track width adjustment screws 30 to rotate synchronously, thereby driving the two sets of steel mesh tracks 10 to move towards each other on the slide rail track 30 to the same width as the steel mesh and stop. Then the steel mesh is inserted into the steel mesh clamping area 102, the steel mesh is first placed on the wear-resistant strip 104 and inserted into the guide wheel 103, the steel mesh is continuously inserted into the steel mesh clamping area 102, when inserted in place, the air cylinder 106 drives the second rotating part 108 to rotate, the second rotating part rotates while pushing the connecting rod 109 to move, and at the same time the first rotating part 107 and the second rotating part 108 are kept at the same angle of rotation under the action of the connecting rod 109, thereby driving the track rod 101 to move upwards synchronously at both ends to clamp the steel mesh, when the approaching in-place sensor 110 detects that the steel mesh is clamped in place, the air cylinder stops working, at this time the clamping of the two ends of the steel mesh can be realized and subsequent processes can be carried out.

[0033] The steel mesh measuring machine of the preferred embodiment of the utility model comprises the clamping device described above, and subsequent processes are carried out after the steel mesh is clamped by the clamping device; the specific clamping device structure is the same as described above, and no repeated description is given here.

[0034] It should be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A clamping device, comprising two sets of clamping rails arranged opposite to each other, and a slide rail connecting the two ends of the two sets of clamping rails, wherein each clamping rail includes a fixed clamping arm and a movable clamping arm corresponding to the fixed clamping arm, and a clamping area is formed between the fixed clamping arm and the movable clamping arm, characterized in that: The clamping device further comprises a driving device and a rotating member connected with the movable clamping arm, which rotates under the action of the driving device and drives the movable clamping arm to move up and down in parallel to change the height of the clamping area.

2. The clamping device of claim 1, wherein: The clamping device is provided with at least two groups of rotating members, which are distributed at both ends of the movable clamping arm and connected with the movable clamping arm, and rotate by the same angle under the action of the driving device to drive both ends of the movable clamping arm to move up and down simultaneously to make the movable clamping arm move up and down in parallel.

3. The clamping device of claim 2, wherein: The at least two groups of rotating members are connected by a connecting rod, and the driving device is arranged as a group, wherein the first rotating member rotates under the action of the driving device and drives the connecting rod to move, and the connecting rod is connected with other rotating members and drives them to rotate by the same angle as the first rotating member under the action of the connecting rod.

4. The clamping device of claim 3, wherein: The rotating member comprises a force receiving end in contact with the driving device or the connecting rod and a driven end connected with the movable clamping, and a rotating shaft is arranged between the force receiving end and the driven end, and a synchronous block is further arranged on the force receiving end, which is connected with the connecting rod, and the driving device or the connecting rod drives the force receiving end to rotate along the rotating shaft and drives the driven end to rotate along the rotating shaft.

5. The clamping device of claim 3, wherein: A limiting wheel is further arranged on the rotating member, which rotates synchronously when the rotating member rotates, and a limiting groove corresponding to the limiting wheel is arranged on the movable clamping arm, and the limiting wheel moves in the limiting groove and drives the movable clamping arm to move in the up and down direction.

6. The clamping device of claim 5, wherein: A guide block is further arranged on both sides of the movable clamping arm, which enables the movable clamping arm to move only in a direction perpendicular to the clamping area.

7. The clamping device of claim 1, wherein: A guide wheel is further arranged between the movable clamping arm and the clamping rail, and a wear-resistant strip is arranged on the movable clamping arm, and when the movable clamping arm is in the initial state, the height of the guide wheel in the Y direction is higher than the upper surface of the wear-resistant strip.

8. The clamping device of claim 7, wherein: A position sensor for detecting the clamping state is further arranged on the movable clamping arm, and when the position sensor detects that the clamping is in place, the driving device will stop further driving.

9. The clamping device of claim 1, wherein: A plurality of sensors are arranged on the side surface of the clamping rail, which are staggered at different heights in the Y direction, and a width adjusting transmission shaft is further arranged at the lower end of the clamping rail, and a rail width adjusting screw is arranged at the lower end of the slide rail, which is connected with the width adjusting transmission shaft, and when the width adjusting transmission shaft rotates, it drives two groups of rail width adjusting screws to rotate synchronously, and drives the clamping rail to move synchronously in the same direction or opposite direction on the slide rail.

10. A wire measuring machine comprising a clamping device according to any one of claims 1-9, characterized in that The clamping device clamps and fixes the steel mesh to be processed.

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