CN216803163U - Automatic clamping tool - Google Patents

Abstract

The utility model relates to an automatic clamping tool which comprises a main mounting seat, an auxiliary mounting seat, a movable clamping plate, a telescopic driving mechanism and a guide rod, wherein two ends of the guide rod are respectively penetrated and slidably connected with the main mounting seat and the auxiliary mounting seat; the two ends of the main body part of the telescopic driving mechanism are respectively fixed on the main mounting seat and the auxiliary mounting seat, a telescopic rod of the telescopic driving mechanism penetrates through the main mounting seat, and the end part of the telescopic rod is connected with and drives the other end of the guide rod; a fixed clamping plate is arranged on the main mounting seat, and a pressure detection device is arranged on one side of the fixed clamping plate facing the movable clamping plate or/and one side of the movable clamping plate facing the fixed clamping plate; one side of the main mounting seat, which is far away from the movable clamping plate, is also provided with a first distance sensor, and the other end of the guide rod is provided with an end plate which is correspondingly arranged with the first distance sensor. The automatic clamping tool can realize automatic clamping control.

Description

Automatic clamping tool

Technical Field

The utility model relates to the technical field related to product assembling and clamping, in particular to an automatic clamping tool.

Background

Need the stationary part in product assembly, course of working, just need use and press from both sides tight frock, the kind that presss from both sides tight frock is various, can divide into general frock and special type frock altogether, also can divide into manual clamping frock and self-holding frock, places part or part in pressing from both sides tight frock inboardly, then moves the movable jaw and realizes pressing from both sides tightly, in order to guarantee to press from both sides the stability after pressing from both sides tightly, spare part needs a specific position of placing, then presss from both sides tightly.

The tool is used under the condition of unfamiliarity with the tool, the position of a part cannot be rightly placed in each clamping, and once the dislocation or other conditions occur, the tool is easy to damage parts after being clamped, and even potential safety hazards occur.

The current error-proofing solution is mainly positioning, namely a positioning part or a positioning structure is arranged on a clamp, when a workpiece is not installed according to a correct mode, a clamping tool cannot clamp the workpiece, or the workpiece cannot be matched with the clamping tool, so that the workpiece cannot be placed in the clamping tool.

The above-mentioned mode operation, must an assembly or manufacturing procedure of a part just need correspond a location structure, use the resource that consumes that the comparison is got up, moreover for some general frock, after the installation location structure, just can only use the processing at a part, lost the effect of general anchor clamps, when producing another kind of part, need dismantle the location structure and get off to change, very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic clamping tool for solving one or more technical problems in the prior art.

The technical scheme for solving the technical problems is as follows: an automatic clamping tool comprises a main mounting seat, an auxiliary mounting seat, a movable clamping plate, a telescopic driving mechanism and a guide rod, wherein two ends of the guide rod are respectively penetrated through and slidably connected with the main mounting seat and the auxiliary mounting seat, one end of the guide rod is connected with the movable clamping plate, and the movable clamping plate and the main mounting seat are respectively positioned on two sides of the auxiliary mounting seat; the two ends of the main body part of the telescopic driving mechanism are respectively fixed on the main mounting seat and the auxiliary mounting seat, a telescopic rod of the telescopic driving mechanism penetrates through the main mounting seat, and the end part of the telescopic rod is connected with and drives the other end of the guide rod; a fixed clamping plate is arranged on the main mounting seat, and a pressure detection device is arranged on one side of the fixed clamping plate facing the movable clamping plate or/and one side of the movable clamping plate facing the fixed clamping plate; one side of the main mounting seat, which is away from the movable clamping plate, is also provided with a first distance sensor, and the other end of the guide rod is provided with an end plate which is correspondingly arranged with the first distance sensor.

The beneficial effects of the utility model are: according to the automatic clamping tool, the main body part of the telescopic driving mechanism can automatically control and drive the telescopic rod to operate, so that the telescopic rod drives the guide rod to slide relative to the main mounting seat and the auxiliary mounting seat, the movable clamping plate is driven to be close to or far away from the fixed clamping plate, and the automatic clamping of a workpiece can be realized. The automatic clamping tool is more universal, has a wider application range, does not need to design structures aiming at different parts, greatly reduces the workload of personnel, and integrally reduces the production cost.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the number of the guide rods is at least two, the at least two guide rods are arranged in parallel, the other ends of the at least two guide rods are fixedly connected through an end plate, and the end part of the telescopic rod is connected with and drives the end plate.

The beneficial effect of adopting the further scheme is that: through setting up two piece at least guide arms, can make the operation of activity splint more stable.

Further, pressure measurement includes second distance sensor, spring and plate body, the activity splint orientation one side of solid fixed splint is equipped with the recess, second distance sensor fixes the tank bottom of recess, the both ends of spring respectively with the plate body and the tank bottom fixed connection of recess.

The beneficial effect of adopting the above further scheme is: through setting up second distance sensor, can detect the positional information of plate body, according to the elasticity variation parameter of spring, the pressure information that just can direct derivation received.

Further, a sleeve is fixed at the bottom of the groove, and the second distance sensor is positioned in the sleeve; one side of the plate body is connected with a movable column body, the movable column body is sleeved in the sleeve, and the spring is sleeved on the movable column body and the outer side of the sleeve.

The beneficial effect of adopting the further scheme is that: through setting up sleeve and activity cylinder, can provide the direction for the motion of plate body and spring, be favorable to improving measurement accuracy.

Further, the limiting plate is arranged on the inner side of the notch of the groove, and the limiting plate faces towards one side face of the plate body and the movable clamping plate faces towards the distance between one side face of the fixed clamping plate and the thickness of the plate body.

The beneficial effect of adopting the above further scheme is: through setting up the limiting plate, the limiting plate can restrict the plate body and enter into in the recess.

Further, a U-shaped groove is formed in the movable clamping plate, an alarm is arranged in the U-shaped groove, and the alarm is connected with the pressure detection device.

The beneficial effect of adopting the above further scheme is: through setting up U type groove to set up the alarm in U type groove, when the work piece clamping is not in place, the alarm can report to the police, and the suggestion staff carries out the clamping work piece again.

Furthermore, a first base plate is arranged on one side face, facing the fixed clamping plate, of the movable clamping plate, a second base plate is arranged on one side face, facing the fixed clamping plate, of the fixed clamping plate, and the first base plate and the second base plate are made of hard alloy materials respectively.

The beneficial effect of adopting the further scheme is that: through setting up carbide material backing plate, avoid the centre gripping work piece repeatedly, cause the backing plate damage.

Furthermore, one end of the guide rod is in threaded connection with the movable clamping plate, and one end of the guide rod is detachably connected with a protective sleeve.

The beneficial effect of adopting the further scheme is that: through setting up the lag, avoid the guide arm to deviate from movable clamp plate.

Furthermore, the main mounting seat and the auxiliary mounting seat are arranged side by side and in parallel, and a long slot hole is formed in the main mounting seat along the arrangement direction of the guide rod.

Further, one side of the fixed clamping plate facing the movable clamping plate is arranged in parallel with one side of the movable clamping plate facing the fixed clamping plate.

Drawings

FIG. 1 is a schematic perspective view of an automatic clamping tool according to the present invention;

FIG. 2 is a schematic structural view of the automatic clamping tool of the present invention;

FIG. 3 is a schematic top view of the automatic clamping tool of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged view of section A of FIG. 4 in accordance with the present invention;

FIG. 6 is a side view of the self-clamping tool of the present invention;

FIG. 7 is a perspective view of another aspect of the automated clamping assembly of the present invention;

FIG. 8 is a perspective view of the automatic clamping fixture of the present invention;

fig. 9 is a graph showing a relationship between the pressure detected by the pressure detecting device of the present invention and the distance detected by the first distance sensor.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a main mounting base; 101. a long slot hole;

2. an auxiliary mounting seat; 201. mounting holes; 202. a sliding sleeve member; 203. an installation port;

3. a U-shaped groove; 4. fixing the clamping plate; 5. a first backing plate;

6. a guide bar; 61. a threaded portion; 62. a nut;

7. a body portion; 71. a telescopic rod; 8. an end plate; 9. a first distance sensor; 10. a movable splint; 11. a second backing plate; 12. a protective sleeve; 13. a groove; 14. a through hole; 15. a limiting plate; 16. an alarm; 17. a second distance sensor; 18. a sleeve; 19. a spring; 20. a movable column; 21. a plate body.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 8, the automatic clamping tool of the present embodiment includes a main mounting seat 1, an auxiliary mounting seat 2, a movable clamping plate 10, a telescopic driving mechanism and a guide rod 6, two ends of the guide rod 6 respectively penetrate through and are slidably connected to the main mounting seat 1 and the auxiliary mounting seat 2, one end of the guide rod 6 is connected to the movable clamping plate 10, and the movable clamping plate 10 and the main mounting seat 1 are respectively located at two sides of the auxiliary mounting seat 2; two ends of a main body part 7 of the telescopic driving mechanism are respectively fixed on the main mounting seat 1 and the auxiliary mounting seat 2, a telescopic rod 71 of the telescopic driving mechanism penetrates through the main mounting seat 1, and the end part of the telescopic rod 71 is connected with and drives the other end of the guide rod 6; a fixed clamping plate 4 is arranged on the main mounting seat 1, and a pressure detection device is arranged on one side of the fixed clamping plate 4 facing the movable clamping plate 10 or/and one side of the movable clamping plate 10 facing the fixed clamping plate 4; one side of the main mounting seat 1, which is far away from the movable clamping plate 10, is further provided with a first distance sensor 9, and the other end of the guide rod 6 is provided with an end plate 8 which is arranged corresponding to the first distance sensor 9.

Specifically, the main body portion of the telescopic driving mechanism may be passed through the stationary platen 4, and the first distance sensor 9 may be mounted on an end surface of the main body portion passed through the stationary platen 4, and disposed opposite to the end plate 8.

Wherein, an alternative of this embodiment does, flexible actuating mechanism can adopt electric telescopic handle, can automatic flexible control.

As shown in fig. 1 and 3, the number of the guide rods 6 in this embodiment is at least two, at least two guide rods 6 are arranged in parallel, the other ends of at least two guide rods 6 are fixedly connected through an end plate 8, and the end of the telescopic rod 71 is connected to and drives the end plate 8. Through setting up two piece at least guide arms, can make the operation of activity splint more stable.

For example, when two guide rods 6 are used, the other ends of the guide rods 6 may be connected to the ends of the end plates 8, respectively.

One concrete scheme of this embodiment is, as shown in fig. 1-4, the one end of the guide arm 6 of this embodiment is equipped with screw thread portion 61, and the round hole has been seted up to movable clamp plate 10 side, and the round hole cover is established on guide arm 6, then connects on screw thread portion 61 through nut 62, fastens movable clamp plate 10, and when the guide arm removed, can drive movable clamp plate linear motion, realizes the relative movement between fixed clamp plate and the movable clamp plate, realizes pressing from both sides tightly and the action of unclamping.

As shown in fig. 1, the sub-mount 2 of this embodiment is provided with a sliding sleeve 202, the guide rod 6 can be slidably inserted into the sliding sleeve 202, and the two ends of the sub-mount 2 are respectively provided with a mounting hole 201 for mounting and positioning the sub-mount 2. The auxiliary mounting seat 2 of the present embodiment is provided with a mounting opening 203 towards the upper end of one side of the movable clamping plate 10, the mounting opening 203 can be arranged between the two guide rods 6, the tail end of the main body part 7 of the telescopic driving mechanism can be fixed at the mounting opening 203 through a screw, and the head end of the main body part 7 is fixedly connected with the fixed clamping plate 4 through a screw.

As shown in fig. 4 and 5, the pressure detecting device of the present embodiment includes a second distance sensor 17, a spring 19, and a plate body 21, wherein a groove 13 is disposed on one side of the movable clamp plate 10 facing the fixed clamp plate 4, the second distance sensor 17 is fixed at the bottom of the groove 13, and two ends of the spring 19 are respectively fixedly connected to the plate body 21 and the bottom of the groove 13. Through setting up second distance sensor, can detect the positional information of plate body, according to the elasticity variation parameter of spring, the pressure information that just can direct derivation received.

As shown in fig. 5, a sleeve is fixed on the bottom of the groove 13 of the present embodiment, and the second distance sensor 17 is located in the sleeve 18; a side face of the plate body 21 is connected with a movable column body 20, the movable column body 20 is sleeved in the sleeve 18, and the spring 19 is sleeved on the movable column body 20 and the outer side of the sleeve 18. Through setting up sleeve and activity cylinder, can provide the direction for the motion of plate body and spring, be favorable to improving measurement accuracy.

As shown in fig. 5 and 8, in this embodiment, there are two sleeves 18 and two movable columns 20, and the movable columns 20 are connected to the same plate 21. The second distance sensor 17 is located between two sleeves 18.

As shown in fig. 5, a limiting plate 15 is disposed inside the notch of the groove 13, and a distance between a side of the limiting plate 15 facing the plate body 21 and a side of the movable clamping plate 10 facing the fixed clamping plate 4 is the same as the thickness of the plate body 21. Through setting up the limiting plate, the limiting plate can restrict the plate body and enter into in the recess.

As shown in fig. 3, a U-shaped groove 3 is formed in the movable clamp plate 10 of the present embodiment, an alarm 16 is disposed in the U-shaped groove 3, and the alarm 16 is connected to the pressure detection device. Through setting up U type groove to set up the alarm in U type groove, when the work piece clamping is not in place, the alarm can report to the police, and the suggestion staff carries out the clamping work piece again.

As shown in fig. 1 and fig. 2, in this embodiment, a first pad 5 is disposed on a side of the movable clamp plate 10 facing the fixed clamp plate 4, a second pad 11 is disposed on a side of the fixed clamp plate 4 facing the movable clamp plate 10, and the first pad 5 and the second pad 11 are made of hard alloy materials respectively. The first cushion plate 5 and the second cushion plate 11 can be respectively fixed on the fixed splint 4 and the movable splint 10 by adopting a plurality of groups of countersunk head screws, and the first cushion plate 5 and the second cushion plate 11 are arranged in parallel. Through setting up carbide material backing plate, avoid the centre gripping work piece repeatedly, cause the backing plate damage. As shown in fig. 5, a second pad 11 may be provided

As shown in fig. 1 to 4, 7 and 8, one end of the guide rod 6 of the present embodiment is in threaded connection with the movable clamp plate 10, and one end of the guide rod 6 is detachably connected with a protective sleeve 12; the main mounting seat 1 and the auxiliary mounting seat 2 are arranged side by side and in parallel, and a long slotted hole 101 is formed in the main mounting seat 1 along the arrangement direction of the guide rod; one side of the fixed clamping plate 4 facing the movable clamping plate 10 is arranged in parallel with one side of the movable clamping plate 10 facing the fixed clamping plate 4. Through setting up the lag, avoid the guide arm to deviate from movable clamp plate.

As shown in fig. 5, a through hole 14 can be formed in the second pad 11, a plate body 21 is arranged on the inner side of the through hole 14, a movable cylinder 20 is fixed on one side surface of the plate body 21, the movable cylinder 20 can be inserted into an inner ring of the sleeve 18, a spring 19 is sleeved on the outer side of the sleeve 18, the spring 19 provides an outward thrust for the plate body 21, so that the plate body 21 is in an outward protruding state in a natural state, a limiting plate 15 is fixedly connected to the inner side of the groove 13, the limiting plate 15 is located on the inner side of the through hole 14, the plate body 21 is compressed by the force applied to the spring 19 and moves towards the inner side of the through hole 14, and when the plate body moves to the limiting plate 15, the plate body cannot move continuously, the plate body 21 is flush with the second pad 11 at the moment, the second distance sensor 17 can detect the position information of the plate body 21, and the magnitude of the applied pressure can be directly obtained according to the elastic change parameters of the spring 19.

As shown in fig. 1 and 2, a notch is formed in the bottom of the movable clamping plate 10 in this embodiment, the protecting sleeve 12 can be disposed in the notch, the protecting sleeve 12 has two cylindrical portions, and can be sleeved on the end portion of the threaded portion 61 of the guide rod 6, so that the threaded structure is protected, and the precision of the clamp is prevented from being affected by impact.

The self-holding frock of this embodiment is when using, and is fixed main mount pad 1 through slotted hole 101 with main mount pad 1's bottom, at main mount pad 1's top fixed connection solid splint 4, a side of solid splint 4 is the clamping face, clamping face department is through the first backing plate 5 of multiunit countersunk screw connection, and the second backing plate 11 on first backing plate 5 and the movable splint 10 all adopts carbide material to support, can guarantee to press from both sides tightly the back can not be because of the material warp, and makes the tight work piece of clamp drop. Mounting plates are also arranged at two ends of the auxiliary mounting seat 2, and mounting holes 201 are formed in the mounting plates for fixing and mounting. The top fixedly connected with slip external member 202 of vice mount pad 2, have the slip hole on the both sides terminal surface of slip external member 202, solid fixed splint 4 and slip external member 202 parallel arrangement, the terminal surface of solid fixed splint 4 also is provided with the slip hole, and the inside sliding connection of these two slip holes has guide arm 6, can change the position of telescopic link according to the mounted position of guide arm, and aim at does not influence the work of anchor clamps.

The pressure detection device of the present embodiment may also employ an existing pressure sensor. The first distance sensor and the second distance sensor may employ an infrared sensor, a laser sensor, or the like.

An optional working manner of the automatic clamping tool of this embodiment is that, during the clamping process of the automatic clamping tool, when the workpiece is correctly clamped, the clamping distance detected by the first distance sensor and the clamping pressure detected by the pressure detecting device (or the distance detected by the second distance sensor) are in a linear relationship (as shown in fig. 9, the X axis is the distance detected by the first distance sensor, and the Y axis is the distance detected by the second distance sensor in fig. 9), during the actual clamping process of the workpiece, the clamping distance detected by the first distance sensor and the clamping pressure detected by the pressure detecting device (or the distance detected by the second distance sensor) may be compared with the linear relationship of the correctly clamped workpiece (manually, for example, the linear relationship is printed in a table form, and the specific data of the clamping distance detected by the first distance sensor and the clamping pressure (or the distance detected by the second distance sensor) are compared, and manually controlling the start and stop of the automatic clamping tool, and the like), and further the purpose of error prevention can be achieved.

Another optional working mode of the automatic clamping tool of this embodiment is, can be with first distance sensor 9 and pressure sensor or the second distance sensor 17 among the pressure detection device respectively with alarm communication connection, this alarm of detection information synchronous transmission of first distance sensor 9 and pressure sensor or second distance sensor 17, when the work piece clamping is not in place, the alarm can report to the police, the suggestion staff clamps the work piece again, thereby realize the function of mistake proofing, this mistake proofing is for current mistake proofing anchor clamps, through work piece shape structure, the design has the frock clamp that corresponds the structure, have the advantage of general strong. The working mode can be automatically controlled on the basis of the artificial comparison control.

The automatic clamping tool of the embodiment further provides a third working mode, the first distance sensor 9 and the second distance sensor 17 in the pressure sensor or the pressure detection device can be respectively in communication connection with the controller, the detection information of the first distance sensor 9 and the detection information of the pressure sensor or the second distance sensor 17 can be synchronously transmitted to the controller, the controller can automatically judge whether the workpiece is clamped in place or not according to the distance between the fixed clamping plate 4 and the movable clamping plate 10 and the clamping force, when the workpiece is not clamped in place, the alarm can be controlled to give an alarm, the worker is prompted to clamp the workpiece again, and therefore the mistake proofing function is achieved, the mistake proofing function is better than that of an existing mistake proofing clamp, the tool clamp with a corresponding structure is designed through the shape structure of the workpiece, and the tool clamp with the strong universality has the advantage. The alarm 16 may also be electrically connected to the controller. The working mode can be automatically controlled on the basis of the artificial comparison control.

The third working mode of the automatic clamping tool of the embodiment can adopt the following specific method during specific work, the pressure detection device is used for detecting pressure information in the process that the fixed clamping plate and the movable clamping plate clamp the workpiece and transmitting the pressure information to the controller, the first distance sensor is used for detecting distance information between the end plate and the fixed clamping plate and transmitting the distance information to the controller, and the controller is used for judging whether the workpiece is clamped in place according to the pressure information and the distance information. Specifically, when the pressure detection device contacts a workpiece (a point position) and the pressure detection device detects first preset pressure information, the first distance sensor detects first distance information; when the pressure detection device is completely retracted into the groove (b point position) and the pressure detection device detects second preset pressure information, the first distance sensor detects second distance information; when the pressure detection device detects third preset pressure information (the position of a c point), the first distance sensor detects third distance information; the controller is used for judging whether the first distance information accords with first preset distance information, whether the second distance information accords with second preset distance information and whether the third distance information accords with third preset distance information; the controller is further used for judging that the workpiece is not clamped in place when at least one of the first distance information, the second distance information and the third distance information does not accord with the corresponding preset distance information, and judging that the workpiece is clamped in place when the first distance information, the second distance information and the third distance information all accord with the corresponding preset distance information. As for the workpiece clamped in the standard mode, the distance information detected by the first distance sensor and the pressure information detected by the pressure detection device are in linear corresponding relation, whether the workpiece is clamped in place or not can be judged according to whether the pressure information and the distance information of three points in the clamping process are in linear corresponding relation or not, the condition that the workpiece is not clamped in place is judged, automatic clamping accurate control can be achieved, and misloading is prevented.

The third working mode of the automatic clamping tool in this embodiment may further adopt the following specific method during specific work, the pressure detection device is configured to detect pressure information during a process of clamping a workpiece by the fixed clamping plate and the movable clamping plate and transmit the pressure information to the controller, the first distance sensor is configured to detect distance information between the end plate and the fixed clamping plate and transmit the distance information to the controller, and the controller is configured to determine whether the workpiece is clamped in place according to the pressure information and the distance information. Specifically, when the first distance sensor detects that the first distance information accords with first preset distance information, the pressure sensor detects first pressure information; when the first distance sensor detects that the second distance information accords with second preset distance information, the pressure sensor detects second pressure information; when the first distance sensor detects that the third distance information accords with third preset distance information, the pressure sensor detects third pressure information; the controller is used for judging whether the first pressure information accords with first preset pressure information, whether the second pressure information accords with second preset pressure information and whether the third pressure information accords with third preset pressure information; the controller is further used for judging that the workpiece is not clamped in place when at least one of the first pressure information, the second pressure information and the third pressure information does not accord with corresponding preset pressure information, and judging that the workpiece is clamped in place when the first pressure information, the second pressure information and the third pressure information all accord with the corresponding preset pressure information. As for the workpiece clamped in the standard mode, the distance information detected by the first distance sensor and the pressure information detected by the pressure detection device are in linear corresponding relation, whether the workpiece is clamped in place or not can be judged according to whether the pressure information and the distance information of three points in the clamping process are in linear corresponding relation or not, the condition that the workpiece is not clamped in place is judged, automatic clamping accurate control can be achieved, and misloading is prevented.

The principle of the automatic clamping tool of the embodiment is as follows: the workpiece is placed between the fixed clamping plate 4 and the movable clamping plate 10, then the clamp works, the telescopic driving mechanism pushes the telescopic rod 71, further the end plate 8 and the guide rod 6 are pushed to move towards the left side (in the direction corresponding to the figures 2-4), the movable clamping plate 10 is driven to move towards the fixed clamping plate 4, clamping work is achieved, the plate body 21 can firstly contact the workpiece in the clamping process, a leftward force is given to the workpiece in the moving process of the plate body 21, a rightward force is given to the plate body 21 by the reaction force, at the moment, the spring 19 is compressed by the force, the relative distance between the plate body 21 and the second distance sensor 17 is reduced, the magnitude of the clamping force can be judged in real time in the whole process by the cooperation of the second distance sensor 17 and the spring 19, the magnitude of the clamping distance can be measured by the first distance sensor 9, three groups (or any group can be selected according to actual requirements) of data of the second distance sensor 17 and three groups of first distance sensors are selected according to actual requirements The data of the sensors 9 are compared one by one (namely the position data of the three points a, b and c in fig. 9), and when the three groups of comparison results meet the requirements, the workpiece clamping position is judged to be correct, otherwise, the alarm 16 is controlled to give an alarm.

When the automatic clamping tool of the embodiment clamps different workpieces, only the position data of the three points a, b and c in fig. 9 need to be adjusted (that is, the pressure information data or the distance information data of the three points are preset), that is, the first preset pressure information at the beginning of the stage where the stress of the plate body 21 starts to increase sharply (that is, the point a is when the plate body 21 contacts the workpiece) when the pre-clamping starts, and at this time, the first distance sensor 9 measures the first distance information; when the clamping is started, the plate body 21 is retracted into the through hole 14, and the fixed clamping plate 4 and the movable clamping plate 10 start to apply the clamping force (at the position of the b point), within a second preset pressure information range, at the moment, the first distance sensor 9 measures second distance information; when the clamping is completed, the second cushion plate 11 starts to bear the clamping force, the second cushion plate 11 further draws a small amount of the movable clamping plate 10, and the first distance sensor 9 measures the third distance information at the moment when the clamping force meets the requirement (the preset clamping force range of the position of the c point). When the pressure information of the three points a, b and c is taken as a reference, the pressure information obtained by the cooperation of the second distance sensor 17 and the spring 19 is preset at the three points, so that whether the clamping is in place can be judged in real time according to whether the distance data detected by the first distance sensor 9 accords with the preset distance information of the three points.

The automatic clamping tool of the embodiment can automatically control and drive the telescopic rod to operate by utilizing the main body part of the telescopic driving mechanism, so that the telescopic rod driving guide rod slides relative to the main mounting seat and the auxiliary mounting seat, the movable clamping plate is driven to be close to or far away from the fixed clamping plate, and the automatic clamping of a workpiece can be realized. The automatic clamping tool is more universal, has a wider application range, does not need to design structures aiming at different parts, greatly reduces the workload of personnel, and integrally reduces the production cost.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An automatic clamping tool is characterized by comprising a main mounting seat, an auxiliary mounting seat, a movable clamping plate, a telescopic driving mechanism and a guide rod, wherein two ends of the guide rod are respectively penetrated through and slidably connected with the main mounting seat and the auxiliary mounting seat, one end of the guide rod is connected with the movable clamping plate, and the movable clamping plate and the main mounting seat are respectively positioned on two sides of the auxiliary mounting seat; the two ends of the main body part of the telescopic driving mechanism are respectively fixed on the main mounting seat and the auxiliary mounting seat, a telescopic rod of the telescopic driving mechanism penetrates through the main mounting seat, and the end part of the telescopic rod is connected with and drives the other end of the guide rod; a fixed clamping plate is arranged on the main mounting seat, and a pressure detection device is arranged on one side of the fixed clamping plate facing the movable clamping plate or/and one side of the movable clamping plate facing the fixed clamping plate; one side of the main mounting seat, which is away from the movable clamping plate, is also provided with a first distance sensor, and the other end of the guide rod is provided with an end plate which is correspondingly arranged with the first distance sensor.

2. The automatic clamping tool according to claim 1, wherein the number of the guide rods is at least two, the at least two guide rods are arranged in parallel, the other ends of the at least two guide rods are fixedly connected through an end plate, and the end portion of the telescopic rod is connected with and drives the end plate.

3. The automatic clamping tool according to claim 1, wherein the pressure detection device comprises a second distance sensor, a spring and a plate body, a groove is formed in one side, facing the fixed clamping plate, of the movable clamping plate, the second distance sensor is fixed to the bottom of the groove, and two ends of the spring are fixedly connected with the plate body and the bottom of the groove respectively.

4. The automatic clamping tool of claim 3, wherein a sleeve is fixed on the bottom of the groove, and the second distance sensor is located in the sleeve; one side of the plate body is connected with a movable column body, the movable column body is sleeved in the sleeve, and the spring is sleeved on the movable column body and the outer side of the sleeve.

5. The automatic clamping tool according to claim 3, wherein a limiting plate is arranged on the inner side of the notch of the groove, and the distance between one side face of the limiting plate facing the plate body and one side face of the movable clamping plate facing the fixed clamping plate is equal to the thickness of the plate body.

6. The automatic clamping tool according to claim 1, wherein a U-shaped groove is formed in the movable clamping plate, an alarm is arranged in the U-shaped groove, and the alarm is connected with the pressure detection device.

7. The automatic clamping tool is characterized in that a first base plate is arranged on one side face, facing the fixed clamping plate, of the movable clamping plate, a second base plate is arranged on one side face, facing the movable clamping plate, of the fixed clamping plate, and the first base plate and the second base plate are made of hard alloy materials respectively.

8. The automatic clamping tool as claimed in claim 1, wherein one end of the guide rod is in threaded connection with the movable clamping plate, and a protecting sleeve is detachably connected to one end of the guide rod.

9. The automatic clamping tool according to claim 1, wherein the main mounting seat and the auxiliary mounting seat are arranged side by side and in parallel, and a long slot is formed in the main mounting seat along the arrangement direction of the guide rod.

10. The automatic clamping tool according to claim 1, wherein one side surface of the fixed clamping plate facing the movable clamping plate is arranged in parallel with one side surface of the movable clamping plate facing the fixed clamping plate.

Images