Clamp and positioner

Abstract

The clamp is suitable for being assembled on the positioner and comprises a fixing seat and a positioning mechanism, the fixing seat is connected with a positioner seat of the positioner and is provided with a fixing face used for bearing a workpiece, and the fixing face is provided with a reference position; the positioning mechanism comprises a positioning driving part and a pushing and blocking part, the positioning driving part is arranged on the fixed seat, and the pushing and blocking part is in transmission connection with the positioning driving part and can push a workpiece to move; the multiple positioning mechanisms can push the workpiece to move at least in the first direction and the second direction with the included angle so that the workpiece can be moved to the reference position. Thus, the fixing position of the workpiece on the fixing face is determined, programming of automatic welding is facilitated, then, automatic welding modes such as robot welding can be used for replacing traditional manual welding, and then the welding efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering equipment manufacturing, in particular to a clamp and a positioner. Background Art

[0002] The machine room chassis is too large, complex and heavy. In the existing machine room chassis preparation process, a crane or auxiliary crane is generally used to flip the workpiece. Not only is the flipping process dangerous, but it is also easy to affect the normal progress of the construction period due to the resources of the crane and auxiliary crane. At the same time, under this flipping and positioning method, the placement or fixed position of the machine room chassis to be welded is difficult to control, and the different components of the machine room chassis can only be connected by manual welding, which affects the preparation efficiency of the machine room chassis. Utility Model Content

[0003] In view of this, the utility model is dedicated to providing a fixture, which is suitable for being assembled on a positioner to assist the positioner in flipping and positioning the workpiece. At the same time, the fixture is provided with a positioning mechanism, which can push the workpiece to a reference position, so as to facilitate the programming of automatic welding, thereby improving the welding efficiency. In addition, the utility model also provides a positioner including the above fixture.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] A fixture, suitable for being assembled on a positioner, comprises:

[0006] A fixed seat connected to the positioner seat of the positioner and having a fixed surface for carrying a workpiece, wherein the fixed surface has a reference position;

[0007] The positioning mechanism comprises a positioning driving member and a push member, wherein the positioning driving member is arranged on the fixing seat, and the push member is in transmission connection with the positioning driving member and can push the workpiece to move;

[0008] There are multiple positioning mechanisms, and the multiple positioning mechanisms can push the workpiece to move at least along a first direction and a second direction having an angle, so as to move the workpiece to the reference position.

[0009] Preferably, it includes:

[0010] A first position-limiting member is disposed on the fixing seat and is located on a moving path of the workpiece in the first direction;

[0011] A second limiting member is disposed on the fixing seat and is located on a moving path of the workpiece in the second direction;

[0012] Wherein, when both the first limiting member and the second limiting member are in contact with the workpiece, the workpiece is in a reference position.

[0013] Preferably, the positioning drive member is a thread drive mechanism, comprising:

[0014] A positioning seat, fixedly arranged on the fixing seat;

[0015] A positioning motor, fixedly disposed on the positioning seat or the fixing seat;

[0016] The screw rod is connected to the output end of the positioning motor and is rotatably disposed on the positioning seat. The screw rod is threadedly connected to the push member so that the positioning motor can drive the push member to move along the extension direction of the screw rod.

[0017] Preferably, a guide assembly is provided on the positioning seat, and the guide assembly is slidably connected to the push member to constrain the moving direction of the push member.

[0018] Preferably, it comprises a clamping assembly for cooperating with the fixing seat to fix the workpiece, and a plurality of the clamping assemblies are provided, and the plurality of the clamping assemblies are respectively arranged on the fixing seat and / or the push member.

[0019] Preferably, the clamping assembly comprises a hydraulic clamping assembly, and the hydraulic clamping assembly comprises:

[0020] A first base, disposed on the fixing base and / or the pushing member;

[0021] A hydraulic driving component, fixedly disposed on the first base;

[0022] The first pressing head is connected to the hydraulic driving component through a connecting member, and can move toward the fixing surface under the driving of the hydraulic driving component to fix the workpiece.

[0023] Preferably, the first base is provided with a guide hole extending in the height direction;

[0024] The connecting member is a connecting rod, which passes through the guide hole, and one end of which is rotatably connected to the output end of the hydraulic driving member, and the other end of which is connected to the first pressure head;

[0025] Wherein, one of the guide hole and the connecting rod is provided with a spiral groove, and the other is provided with a protrusion matching the spiral groove, so that the first pressing head can rotate with the connecting rod as the axis.

[0026] Preferably, the clamping assembly further comprises a mechanical clamping assembly, and the mechanical clamping assembly comprises a second base, a threaded column, and a second pressing head slidably disposed on the second base;

[0027] Wherein, the second base is arranged on the fixing base and / or the push-stop member, one of the second base and the second pressing head is rotatably connected to the threaded column, and the other is threadably connected to the threaded column.

[0028] Preferably, the fixing seat comprises:

[0029] A first fixed support and a second fixed support are arranged at intervals, and the first fixed support and the second fixed support are arranged on different positioner bases of the positioner;

[0030] The third fixed support is located between the first fixed support and the second fixed support.

[0031] Preferably, the third fixed support is a liftable support.

[0032] A positioner, comprising:

[0033] Positioner seat,

[0034] A lifting assembly is arranged on the positioner base and has a lifting base that moves in the height direction;

[0035] The clamp is the above-mentioned clamp, which is rotatably arranged on the lifting seat.

[0036] Preferably, the lifting assembly comprises:

[0037] A lifting motor is fixedly arranged on the positioner base;

[0038] A lifting screw rod connected to the output end of the lifting motor;

[0039] The lifting seat is threadedly connected with the lifting screw rod and is slidably connected with the positioner seat.

[0040] It can be seen from the above technical solutions that the clamp provided by the utility model is suitable for being assembled on a positioner to assist the positioner in flipping and repositioning the workpiece. In this way, the danger in the process of flipping the workpiece can be effectively reduced, and the construction period will not be affected by the resources of the crane and auxiliary crane. In addition, a reference position is set on the fixed seat of the clamp, as well as a positioning mechanism that can push the workpiece to the reference position. When using the clamp to fix the workpiece, first, place the workpiece to be processed on the fixed surface, then start the positioning mechanism, use the positioning mechanism to push the workpiece to the reference position, and then fix the workpiece. In this way, the fixed position of the workpiece on the fixed surface is determined, which is conducive to the programming of automatic welding, and then the traditional manual welding can be replaced by automatic welding methods such as robot welding, which can effectively improve the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1Shown is a front view of a clamp provided in an embodiment of the utility model;

[0042] Figure 2 Shown Figure 1 a top view of the fixture shown;

[0043] Figure 3 Shown is a front view of a positioning mechanism provided in an embodiment of the utility model;

[0044] Figure 4 Shown Figure 3 A top view of the positioning mechanism shown;

[0045] Figure 5 Shown is a front view of a hydraulic clamping assembly provided in an embodiment of the utility model;

[0046] Figure 6 Shown Figure 5 a side view of the hydraulic clamping assembly shown;

[0047] Figure 7 Shown is a front view of a mechanical clamping assembly provided in an embodiment of the utility model;

[0048] Figure 8 The figure shows a front view of a positioner provided in an embodiment of the utility model;

[0049] Fig. 9 Shown Figure 8 A top view of the positioner shown;

[0050] Fig.10 Shown is a schematic diagram of a positioner base provided in an embodiment of the utility model;

[0051] Fig.11 Shown Fig.10 The cross-sectional view of the positioner along the AA direction;

[0052] Fig.12 Shown Fig.11 The cross-sectional view of the positioner along the BB direction;

[0053] Fig.13 Shown Fig.11 A partial enlarged view of the positioner in area C.

[0054] exist Figure 1-Figure 13 middle:

[0055] 1-fixed seat, 2-hydraulic clamping assembly, 3-positioning mechanism, 4-mechanical clamping assembly; 5-first limiter, 6-second limiter, 7-positioning base, 8-lifting assembly, 9-rotating assembly;

[0056] 11-first fixed support, 12-second fixed support, 13-third fixed support;

[0057] 21-first base, 22-hydraulic drive member, 23-first pressure head, 24-connecting rod;

[0058] 31-thrusting member, 32-positioning motor, 33-positioning seat, 34-screw;

[0059] 41-second base, 42-threaded column, 43-second pressure head;

[0060] 81-lifting motor, 82-reducer, 83-lifting screw, 84-lifting seat;

[0061] 91-rotating motor, 92-input gear, 93-output gear, 94-rotating seat;

[0062] 431-pressing head body, 432-guide column. DETAILED DESCRIPTION

[0063] The embodiment of the utility model provides a clamp suitable for being assembled on a positioner to fix the workpiece, so that the danger in the process of turning the workpiece can be effectively reduced, and the construction period will not be affected by the resources of the crane and the auxiliary crane; at the same time, it can adjust the position of the workpiece to the reference position by setting the positioning mechanism 3, so as to facilitate the programming of automatic welding. In addition, the embodiment of the utility model also provides a positioner, including the above-mentioned clamp, which is suitable for turning and positioning the workpiece to be connected by welding. It should be noted that the above-mentioned workpiece can be a large structural part, that is, a structural part with a relatively large volume and weight, such as a machine room chassis.

[0064] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0065] like Figure 1-Figure 7As described, the fixture in the embodiment of the utility model includes a fixed seat 1 and a positioning mechanism 3, wherein the fixed seat 1 is connected to the positioner seat 7 of the positioner (a device capable of controlling the flipping and lifting of the workpiece), and has a fixed surface for carrying the workpiece, and the fixed surface has a reference position (or zero position); the positioning mechanism 3 includes a positioning drive and a push member 31, the positioning drive is arranged on the fixed seat 1, the push member 31 is transmission-connected with the positioning drive, and can push the workpiece to move; and the positioning mechanism 3 is provided with multiple, multiple positioning mechanisms 3 can push the workpiece to move at least along a first direction and a second direction with an angle (the angle between the first direction and the second direction can be adaptively designed as needed, such as 60° or 90°, etc.; in addition, the push member 31 can also push the workpiece to move along three or four different directions, and the utility model does not make specific restrictions on this), so as to move the workpiece to the reference position; when the fixture is used to fix the workpiece, first, the workpiece to be processed is placed on the fixed surface, and then the positioning mechanism 3 is started, and the positioning mechanism 3 is used to push the workpiece to the reference position, and then the workpiece is fixed. In this way, the fixed position of the workpiece on the fixed surface is determined, which is conducive to the programming of automatic welding, and then automatic welding methods such as robot welding can be used to replace traditional manual welding, thereby effectively improving welding efficiency.

[0066] It should be noted that the number of positioning mechanisms 3 can be adaptively designed according to needs, and the utility model does not specifically limit this. For example, in some embodiments, three positioning mechanisms 3 are set on the fixed surface of the fixed seat 1, and two of the positioning mechanisms 3 can push the workpiece to move in the first direction, and the remaining positioning mechanisms 3 can push the workpiece to move in the second direction. In other embodiments, six positioning mechanisms 3 are set on the fixed surface of the fixed seat 1, and four of the positioning mechanisms 3 can push the workpiece to move in the first direction, and the remaining positioning mechanisms 3 can push the workpiece to move in the second direction.

[0067] It should also be noted that when multiple positioning mechanisms 3 jointly drive the positioning mechanism 3 to move in a certain direction, in order to ensure the consistency of the movement of the multiple positioning mechanisms 3, in some preferred embodiments, a displacement encoder is provided to control the positioning mechanism 3 that drives the workpiece to move in the same direction so that they can start and stop synchronously.

[0068] like Figure 2As shown, in some embodiments, the fixing seat 1 is further provided with a first stopper 5 and a second stopper 6, and the first stopper 5 is provided on the moving path of the workpiece in the first direction, and the second stopper 6 is provided on the moving path of the workpiece in the second direction. When the first stopper 5 and the second stopper 6 are both in contact with the workpiece, the workpiece is in the reference position. During use of the fixture, the first stopper 5 is used to control the movement of the workpiece in the first direction, that is, when the workpiece contacts the first stopper 5, the positioning mechanism 3 used to push the workpiece to move along the first direction stops working; similarly, the second stopper 6 controls the movement of the workpiece in the second direction, and when the workpiece contacts the second stopper 6, the positioning mechanism 3 used to push the workpiece to move along the second direction stops working; in this way, under the action of the first stopper 5 and the second stopper 6, in cooperation with the pushing action of the positioning mechanism 3, the workpiece can be accurately moved to the reference position.

[0069] In an exemplary embodiment, the first stopper 5 and the second stopper 6 are both mechanical structural parts, such as baffles, blocks, and other structures that can block the movement of the workpiece. At the same time, in order to ensure that the positioning mechanism 3 can stop working after the workpiece contacts the first stopper 5 and the second stopper 6, in some preferred embodiments, pressure sensors are set on the first stopper 5 and the second stopper 6, and the pressure sensors are used to detect the force of the workpiece acting on the first stopper 5 and the second stopper 6, and the pressure sensors are connected to the control system signal that controls the movement of the positioning mechanism 3, and when the pressure detected by the pressure sensor reaches a preset value (the size of the preset value can be adaptively designed according to actual needs), the control system controls the corresponding positioning mechanism 3 to stop working. Under this setting mode, the first stopper 5 and the second stopper 6 can prevent the movement of the workpiece, and its reliability is higher.

[0070] In another exemplary embodiment, the first limit member 5 and the second limit member 6 are both position sensors, such as photoelectric sensors. The position sensor is arranged on the fixed surface, and detects whether the workpiece moves to the reference position through a detection signal. It should be noted that, under this setting, the workpiece contacts the first limit member 5 and the second limit member 6 at the same time, which means that the detection signals emitted by the first limit member 5 and the second limit member 6 simultaneously show that the workpiece has reached the preset position (that is, when the workpiece is in the reference position, the first limit member 5 and the second limit member 6 detect the position of the workpiece). Under this setting, the first limit member 5 and the second limit member 6 are less affected by the structural shape of the workpiece, thereby improving the applicability of the clamp.

[0071] In addition, in some other embodiments, a position sensor and a mechanical structure capable of limiting the position are provided at the same time.

[0072] It should be understood that the above only takes the example that the limit member includes the first limit member 5 and the second limit member 6 as an example to illustrate the setting method of the limit member, but the embodiment of the utility model is not limited to this, and the third limit member and the fourth limit member can also be set as needed.

[0073] As mentioned above, the push member 31 pushes the workpiece to move along a preset direction (such as a first direction or a second direction) under the drive of the positioning drive member. The positioning drive member here can be a threaded drive mechanism or a hydraulic drive mechanism. The embodiment of the utility model does not specifically limit this. For example:

[0074] In some embodiments, Figure 3 and Figure 4 As shown, the positioning drive member is a threaded drive mechanism, including a positioning seat 33, a positioning motor 32 and a screw 34, wherein the positioning seat 33 is fixedly arranged on the fixed seat 1, the positioning motor 32 is fixedly arranged on the positioning seat 33, the screw 34 is connected to the output end of the positioning motor 32, and is rotatably arranged on the positioning seat 33, and the screw 34 is threadedly connected with the push member 31, so that the positioning motor 32 can drive the push member 31 to move along the extension direction of the screw 34. Under this setting mode, the push member 31 moves under the action of the threaded structure, and the threaded structure can amplify a small torque and convert it into a large linear force, thereby making the clamp in this embodiment suitable for structural parts with a larger weight, and the threaded structure has good self-locking property and precision, which can effectively ensure the positioning accuracy of the workpiece.

[0075] Furthermore, in a specific embodiment, the positioning seat 33 is detachably arranged on the fixed seat 1 by a bolt structure, and protruding grooves are arranged at both ends of the positioning seat 33 along the extension direction of the screw rod 34, and the two ends of the groove along the length direction have through holes allowing the screw rod 34 to pass through, and the screw rod 34 passes through the above-mentioned through holes and realizes its rotation connection with the positioning seat 33 through a bearing. In addition, the positioning motor 32 is fixedly arranged on the positioning seat 33 by bolts and is located at one end of the screw rod 34, and the output shaft of the positioning motor 32 can be connected to the screw rod 34 through a coupling, and a protrusion matching the above-mentioned groove is arranged on the push member 31, and a threaded hole that realizes the threaded connection between the push member 31 and the screw rod 34 is arranged on the protrusion. In this way, under the limiting action of the screw rod 34, the protrusion and the groove, the push member 31 can move along the extension direction of the screw rod 34 under the drive of the positioning motor 32.

[0076] In other embodiments, the positioning drive member is a hydraulic drive mechanism. Different from the above embodiment, in this embodiment, the driving structure for driving the push member 31 to move is a positioning hydraulic cylinder, and the telescopic end of the positioning hydraulic cylinder can move toward the first direction or the second direction, so that the positioning hydraulic cylinder can drive the push member 31 to move along the first direction or the second direction. In this embodiment, since the positioning seat 33 does not need to be provided with a groove or other structure for accommodating the screw rod 34, and the push member 31 does not need to be provided with a protrusion or other structure that cooperates with the groove, the structure of the positioning seat 33 and the push member 31 is simpler, easier to process, and can reduce equipment costs.

[0077] On the basis of the above-mentioned arrangement of the positioning drive member, in some embodiments, a guide assembly slidably connected to the push member 31 is arranged on the positioning seat 33, and the moving direction of the push member 31 is synchronously constrained by the guide assembly to reduce the wear between the protrusion and the groove, and at the same time, make the movement of the push member 31 more stable. Exemplarily, the guide assembly is a slide groove and slide rail structure, specifically, the surface of the positioning seat 33 facing the push member 31 is provided with a slide rail, and the slide rail extends in the length direction of the screw 34, and a slide groove matching the slide rail is arranged at the position corresponding to the slide rail on the push member 31, so that when the push member 31 moves under the drive of the positioning motor 32, the above-mentioned slide groove and slide rail can assist in constraining the moving direction of the push member 31, and the force on the push member is more balanced during the movement, so that the movement can be more stable.

[0078] Furthermore, in some embodiments, a friction reduction device is provided on the positioning seat 33 in the moving area corresponding to the pusher to reduce the friction between the positioning seat 33 and the pusher 31, further improve the stability of the movement of the pusher 31, and simultaneously improve the service life of the positioning mechanism 3. Exemplarily, the friction reduction device can be a bull's eye mechanism provided in the above-mentioned area of ​​the positioning seat 33, which reduces the friction between the positioning seat 33 and the pusher 31 by converting the sliding friction into rolling friction. In addition, the friction reduction device can also be a friction reduction coating provided on the above-mentioned drive of the positioning seat 33, which reduces the friction between the positioning seat 33 and the pusher 31 by reducing the friction coefficient.

[0079] It should be understood that the above is only an example of the positioning drive member including the positioning seat 33, which is an illustrative description of the setting method of the positioning drive member, but the present invention is not limited to this, that is, the positioning drive member may not be provided with the positioning seat 33, but the positioning seat 33 may be replaced by the fixed seat 1, and the drive motor (or drive hydraulic cylinder), guide assembly and other structures are directly set on the fixed seat 1.

[0080] like Figure 1 and Figure 2As shown, the clamp in the embodiment of the utility model includes a clamping assembly, which is used to cooperate with the fixing seat 1 to fix the workpiece. In some preferred embodiments, multiple clamping assemblies are provided, and the multiple clamping assemblies are respectively provided on the fixing seat 1 and / or the push-stop member 31. By providing multiple clamping assemblies to cooperate with each other to fix the workpiece, the reliability of the fixation can be improved. Further, as Figure 2 As shown, on the basis of providing a plurality of clamping assemblies, the clamping assemblies are arranged in groups of two on the fixing seat 1 and / or the push-stop member 31 to improve the reliability of fixing the workpiece.

[0081] It should be noted here that the clamping assembly is preferably fully or partially arranged on the push member 31. In this way, the clamping assembly moves with the movement of the push member 31, which can effectively avoid the situation where the clamping assembly cannot fix the workpiece after the workpiece moves to the reference position under the action of the positioning mechanism 3, thereby making the clamp suitable for more types of workpieces.

[0082] In addition, it should be pointed out that the clamping assembly in this embodiment can be a hydraulic clamping assembly 2 or a mechanical clamping assembly 4, and can be adaptively designed according to needs. For example:

[0083] In some embodiments, the clamping assembly is a hydraulic clamping assembly 2, including a first base 21, a hydraulic drive member 22 and a first ram 23, wherein the first base 21 is disposed on the fixed seat 1 and / or the push member 31, the hydraulic drive member 22 is fixedly disposed on the first base 21, the first ram 23 is connected to the hydraulic drive member 22 through a connecting member, and can move toward the fixed surface under the drive of the hydraulic drive member 22 to fix the workpiece. Specifically, as Figure 5 and Figure 6 As shown, the first base 21 is a door-type structure, including two spaced support columns and a crossbeam connecting the two support columns, a connecting member passes through the crossbeam and is slidably connected to the crossbeam, and one end of the connecting member is connected to the first pressure head 23, and the other end is connected to the hydraulic drive member 22. In this way, the first pressure head 23 can move back and forth in the height direction under the action of the hydraulic drive member 22, and then can cooperate with the fixing surface of the fixing seat 1 to achieve clamping and fixing of the workpiece. Under this structural setting, it is more conducive to realizing the automation of workpiece fixing.

[0084] Further, in some embodiments, the connecting member is a connecting rod 24, a guide hole is opened in the crossbeam of the first base 21 so that the connecting rod 24 can pass through the crossbeam, and one of the guide hole and the connecting rod 24 is provided with a spiral groove, and the other is provided with a protrusion matching the spiral groove, so that the first press head 23 can rotate with the connecting rod 24 as an axis, so that the influence of the first press head 23 on the placement of the workpiece can be effectively avoided. Specifically, in an exemplary embodiment, the inner wall of the guide hole is provided with a spiral groove, the end of the spiral groove away from the fixed surface is the starting end, and the end close to the fixed surface is the ending end, and the projections of the starting end and the ending end on the fixed surface do not overlap, and the connecting rod 24 is provided with a protrusion matching the spiral groove, and when the protrusion is on the side of the starting end, the projection of the first press head 23 toward the fixed surface falls on the outside of the area where the workpiece is located, that is, in the height direction, at this time, the first press head 23 does not overlap with the area to be fixed of the workpiece, so that the interference between the first press head 23 and the workpiece during the process of placing or removing the workpiece from the fixed surface can be avoided. When the first pressing head 23 moves toward the fixed surface driven by the connecting rod 24, the connecting rod 24 rotates around the connecting rod 24 as the axis under the constraint of the protrusion and the spiral groove, and the projection of the first pressing head 23 toward the fixed surface gradually approaches the workpiece and finally falls on the workpiece to ensure that the first pressing head 23 can act on the workpiece.

[0085] In other embodiments, the clamping assembly is a mechanical clamping assembly 4, including a second base 41, a threaded column 42, and a second pressing head 43 slidably disposed on the second base 41, wherein the second base 41 is disposed on the fixed seat 1 and / or the push-stop member 31, and one of the second base 41 and the second pressing head 43 is rotatably connected to the threaded column 42, and the other is threadedly connected to the threaded column 42. In an exemplary embodiment, as Figure 7 As shown, the second ram 43 includes a ram body 431 and a guide column 432 (the number of guide columns 432 can be adaptively designed as needed), and the second ram 43 is rotatably connected to the threaded column 42, and a threaded hole is provided at a position of the second base 41 corresponding to the threaded column 42 to achieve a threaded connection between the second base 41 and the threaded column 42. In addition, a guide hole is provided at a position of the second base 41 corresponding to the guide column 432, so that when the threaded column 42 rotates, the second ram 43 can be driven to move along the extension direction (i.e., height direction) of the threaded column 42, and then the second ram 43 can be used to cooperate with the fixing surface to achieve the clamping and fixing of the workpiece. Under this structural setting, the second ram 43 fixes the workpiece through a mechanical structure, and it is less likely to fail.

[0086] In addition, in some other embodiments, a plurality of clamping assemblies are provided, and among the plurality of clamping assemblies, there are both hydraulic clamping assemblies 2 and mechanical clamping assemblies 4 .

[0087] like Figure 1As shown, in some embodiments, the fixed seat 1 includes a first fixed support 11 and a second fixed support 12 arranged at intervals, and a third fixed support 13 arranged between the first fixed support 11 and the second fixed support 12, wherein the first fixed support 11 and the second fixed support 12 are respectively arranged on different positioner seats 7 of the positioner; thus, on the one hand, in the process of adjusting the workpiece to the reference position by using the positioning mechanism 3, the first fixed support 11 and the second fixed support 12 can be controlled to be higher than the third fixed support 13, thereby reducing the contact area between the workpiece and the fixed seat 1, so as to reduce the friction between the workpiece and the fixed seat 1. On the other hand, the total length of the fixed seat 1 can also be changed by replacing the third fixed support 13 with different lengths, thereby increasing the scope of application of the clamp.

[0088] Furthermore, in some embodiments, the third fixed support 13 is a liftable support, so that the relative heights of the first fixed support 11, the second fixed support 12 and the third fixed support 13 can be changed by adjusting the height of the third fixed support 13.

[0089] In addition, if Figure 8-Figure 13 As shown, the embodiment of the utility model also provides a positioner, including a positioner base 7, a lifting assembly 8 and the above-mentioned clamp, wherein the lifting assembly 8 is arranged on the positioner base 7, and has a lifting seat 84 that moves along the height direction, and the clamp is the clamp in the above-mentioned embodiment, and is rotatably arranged on the lifting seat 84, so that the workpiece fixed by the clamp can be turned over and lifted under the control of the positioner base 7, thereby replacing the technical solution of using a crane or a crane to turn the workpiece in the prior art, and can effectively avoid the problem of crane and crane resources affecting the construction period. In addition, it should be noted that since the positioner in this embodiment includes the above-mentioned clamp, the beneficial effects brought about by the clamp to the positioner are discussed in detail above and will not be repeated here.

[0090] In addition, it should be noted that the number of positioner seats 7 can be adaptively designed according to needs. For example, when the volume and weight of the workpiece to be welded are not too large, only one positioner seat 7 can be provided, and the fixed seat 1 is located on one side of the positioner seat 7. When the volume and weight of the workpiece to be welded are large, two positioner seats 7 can be provided, and the clamp is located between the two positioner seats 7, and the two positioner seats 7 jointly control the lifting and flipping of the clamp.

[0091] In some embodiments, Fig.11As shown, the lifting assembly 8 includes a lifting motor 81, a lifting screw 83 and a lifting seat 84, wherein the lifting motor 81 is fixedly arranged on the positioner seat 7, the lifting screw 83 is connected to the output end of the lifting motor 81, and the lifting seat 84 is threadedly connected to the lifting screw 83 and slidably connected to the positioner seat 7. In this way, the lifting and lowering of the workpiece is realized by using the threaded structure, and the entire lifting process is more stable, thereby reducing the probability of the workpiece falling during the lifting and turning process, and improving the safety in the production process. The threaded structure has a good self-locking ability, which can effectively prevent the lifting seat 84 from falling when it is raised to a high position, thereby improving the safety in the production process. Further preferably, in some embodiments, a reducer 82 is also arranged between the lifting motor 81 and the lifting screw 83 to increase the output torque of the motor.

[0092] Of course, in specific implementation, a hydraulic drive structure may be used to replace the above-mentioned thread lifting structure. The specific setting method of the hydraulic drive structure can refer to the prior art, and the utility model will not be repeated here.

[0093] In addition, in some embodiments, the clamp is rotatably arranged on the lifting seat 84 through a rotating component 9, and the rotating component 9 includes a rotating motor 91, a gear group and a rotating seat 94, wherein the rotating motor 91 is fixedly arranged on the lifting seat 84, and the gear group includes an input gear 92 and an output gear 93, the input gear 92 is fixedly connected to the output end of the rotating motor 91, the output gear 93 is rotatably arranged on the lifting seat 84, and the output gear 93 is fixedly connected to the rotating seat 94, and the rotating seat 94 is fixedly connected to the fixed seat 1 of the clamp; in this way, when the lifting seat 84 is lifted and lowered under the action of the lifting motor 81, the entire rotating component 9 can be synchronously lifted and lowered under the drive of the lifting seat 84, so that the clamp can be lifted and lowered under the control of the lifting motor 81; in addition, when the workpiece needs to be flipped, the rotating motor 91 is controlled to start, and the rotating seat 94 can transmit the torque of the motor to the above-mentioned clamp under the transmission of the gear group, so that the clamp can rotate under the drive of the rotating motor 91 to realize the flipping of the workpiece.

[0094] It should be pointed out that the transmission ratio of the gear set in the rotating assembly 9 can be adaptively designed according to needs, and the present invention does not make specific restrictions on this, but it should ensure that the rotating motor 91 can control the workpiece to complete the flipping through the gear set.

[0095] In addition, based on the fact that multiple positioner bases 7 are provided, in some preferred embodiments, a height encoder is provided to control the synchronous start and stop of the lifting components 8 in different positioner bases 7. At the same time, an angle encoder is provided to control the synchronous start and stop of the rotating components 9 in different positioner bases 7. In this way, the stability of the workpiece during the lifting and flipping process can be effectively improved.

[0096] In addition, the basic steps of using the positioner in this embodiment to process the workpiece are as follows:

[0097] S1: Move the workpiece to the fixed surface of the fixture;

[0098] S2: Move the workpiece to the reference position using the positioning mechanism 3;

[0099] S3: Fix the workpiece using a clamping assembly;

[0100] S4: Operate the positioner to move to the highest position and flip the workpiece as required;

[0101] S5: lower the workpiece to the lowest position for welding;

[0102] S6: Repeat the above S4 and S5 until welding is completed;

[0103] S7: Release the fixed state of the workpiece and move the workpiece out.

[0104] It should be noted that in the above step S4, depending on the structural shape and size of the workpiece, the workpiece may not be turned over by raising the workpiece to the highest position during specific implementation.

[0105] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. must be possessed by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not limitation, and the above details do not limit the present invention to be implemented by adopting the above specific details.

[0106] It should also be noted that in the device, apparatus and method of the present invention, each component or each step can be decomposed and / or reassembled, and such decomposition and / or reassembly shall be regarded as an equivalent solution of the present invention.

[0107] In addition, it should be understood that the qualifiers "first" and "second" used in the description of the embodiments of the present invention are only used to more clearly illustrate the technical solution and cannot be used to limit the protection scope of the present invention.

[0108] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the utility model to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A clamp, characterized in that: Suitable for assembly on positioners, including: A fixed seat connected to the positioner seat of the positioner and having a fixed surface for carrying a workpiece, wherein the fixed surface has a reference position; The positioning mechanism comprises a positioning driving member and a push member, wherein the positioning driving member is arranged on the fixing seat, and the push member is in transmission connection with the positioning driving member and can push the workpiece to move; There are multiple positioning mechanisms, and the multiple positioning mechanisms can push the workpiece to move at least along a first direction and a second direction having an angle, so as to move the workpiece to the reference position.

2. The clamp according to claim 1, characterized in that: include: A first limiting member is disposed on the fixing seat and is located on a moving path of the workpiece in the first direction; A second limiting member is disposed on the fixing seat and is located on a moving path of the workpiece in the second direction; Wherein, when both the first limiting member and the second limiting member are in contact with the workpiece, the workpiece is in a reference position.

3. The clamp according to claim 1 or 2, characterized in that: The positioning drive member is a thread drive mechanism, comprising: A positioning seat, fixedly arranged on the fixing seat; A positioning motor, fixedly arranged on the positioning seat or the fixing seat; The screw rod is connected to the output end of the positioning motor and is rotatably disposed on the positioning seat. The screw rod is threadedly connected to the push member so that the positioning motor can drive the push member to move along the extension direction of the screw rod.

4. The clamp according to claim 3, characterized in that: A guide assembly is arranged on the positioning seat, and the guide assembly is slidably connected with the push-blocking member to constrain the moving direction of the push-blocking member.

5. The clamp according to claim 3, characterized in that: It comprises a clamping assembly for cooperating with the fixing seat to fix the workpiece, and a plurality of the clamping assemblies are provided, and the plurality of the clamping assemblies are respectively arranged on the fixing seat and / or the push member.

6. The clamp according to claim 5, characterized in that: The clamping assembly comprises a hydraulic clamping assembly, and the hydraulic clamping assembly comprises: A first base, disposed on the fixing base and / or the pushing member; A hydraulic driving component, fixedly disposed on the first base; The first pressing head is connected to the hydraulic driving member through a connecting member, and can move toward the fixing surface under the driving of the hydraulic driving member to fix the workpiece.

7. The clamp according to claim 6, characterized in that The first base is provided with a guide hole extending in the height direction; The connecting member is a connecting rod, which passes through the guide hole, and one end of the connecting rod is rotatably connected to the output end of the hydraulic driving member, and the other end is connected to the first pressure head; Wherein, one of the guide hole and the connecting rod is provided with a spiral groove, and the other is provided with a protrusion matching the spiral groove, so that the first pressing head can rotate with the connecting rod as the axis.

8. The clamp according to claim 6, characterized in that: The clamping assembly further comprises a mechanical clamping assembly, wherein the mechanical clamping assembly comprises a second base, a threaded column and a second pressing head slidably disposed on the second base; Wherein, the second base is arranged on the fixing base and / or the push-stop member, one of the second base and the second pressing head is rotatably connected to the threaded column, and the other is threadably connected to the threaded column.

9. The clamp according to claim 1, characterized in that: The fixing seat comprises: A first fixed support and a second fixed support are arranged at intervals, and the first fixed support and the second fixed support are arranged on different positioner bases of the positioner; The third fixed support is located between the first fixed support and the second fixed support.

10. The clamp according to claim 9, characterized in that The third fixed support is a liftable support.

11. A positioner, characterized in that: include: Positioner seat, A lifting assembly is arranged on the positioner base and has a lifting base that moves in the height direction; The clamp is the clamp according to any one of claims 1 to 10, and is rotatably arranged on the lifting seat.

12. The positioner according to claim 11, characterized in that: The lifting assembly comprises: A lifting motor is fixedly arranged on the positioner base; A lifting screw rod connected to the output end of the lifting motor; The lifting seat is threadedly connected with the lifting screw rod and is slidably connected with the positioner seat.

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