Workpiece clamping mechanism and workpiece centering device

Abstract

The utility model provides a workpiece clamping mechanism and a workpiece centering device, and relates to the technical field of automobile production lines, the workpiece clamping mechanism comprises a clamping plate, a first telescopic part and a second telescopic part, the first telescopic part and the second telescopic part are located on the same side of the clamping plate, and the first telescopic part and the second telescopic part are located on the same side of the clamping plate. The telescopic end of the first telescopic part is hinged to one end of the clamping plate, the telescopic end of the second telescopic part is movably connected to the other end of the clamping plate, and the second telescopic part is used for driving the clamping plate to rotate around the hinge point of the second telescopic part and the first telescopic part. The side face of the clamping plate can make full contact with the surface of a workpiece, the contact area is relatively increased, stress concentration is prevented, and damage to the surface of the workpiece is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile production line, specifically, a workpiece clamping mechanism and workpiece centering device. BACKGROUND

[0002] In the automobile coating production line, the workpiece centering device is one of the key components, which is used to ensure that the workpiece such as the vehicle body can be accurately in the predetermined position, so as to ensure the coating quality. The workpiece centering device usually includes clamping mechanisms located on both sides of the workpiece conveying line, and the two clamping mechanisms clamp the workpiece together to realize the workpiece centering.

[0003] In the related art, the clamping mechanism usually has a clamping plate for clamping the workpiece. When the clamping mechanism is clamped, the clamping plate needs to be moved until the side surface of the clamping plate is in contact with the surface of the workpiece. However, the angle between the side surface of the clamping plate and the surface of the workpiece may not match, for example, the surface of the workpiece is inclined, and the side surface of the clamping plate is flat. At this time, the clamping plate is moved to contact the surface of the workpiece, and the side surface of the clamping plate is only in contact with the surface of the workpiece at one end, and the other end is not in contact with the surface of the workpiece. In this way, it is difficult to ensure sufficient contact between the two, which can result in a small contact area, thereby easily causing stress concentration and causing damage to the surface of the workpiece. SUMMARY

[0004] The problem solved by the utility model is how to reduce the damage to the surface of the workpiece caused by the clamping mechanism.

[0005] To solve the above problems, the utility model provides a workpiece clamping mechanism and a workpiece centering device.

[0006] In the first aspect, the utility model provides a workpiece clamping mechanism for automobile production line, the workpiece clamping mechanism includes clamping plate, first telescopic part and second telescopic part, the first telescopic part and the second telescopic part are located at the same side of the clamping plate, the telescopic end of the first telescopic part is hinged to one end of the clamping plate, the telescopic end of the second telescopic part is movably connected to the other end of the clamping plate, and the second telescopic part is used to drive the clamping plate to rotate around the hinge point of the clamping plate and the first telescopic part.

[0007] Optionally, the telescopic end of the second telescopic part is reciprocally movably connected to the clamping plate in the direction towards the hinge point of the clamping plate.

[0008] Optionally, one side of the clamping plate is provided with a mounting boss, a strip-shaped hole extending in the direction towards the hinge point of the clamping plate is formed in the mounting boss, and the telescopic end of the second telescopic part is provided with a connecting shaft inserted into the strip-shaped hole.

[0009] Optionally, one side of the clamping plate is provided with a mounting boss, a sliding groove extending towards the hinge point of the clamping plate is formed in the mounting boss, and the telescopic end of the second telescopic member is hingedly connected with a sliding block in sliding fit with the sliding groove.

[0010] Optionally, the mounting boss is further provided with a circular hole parallel to the axial direction of the strip-shaped hole, and the telescopic end of the first telescopic member is provided with a hinge shaft hingedly connected with the circular hole.

[0011] Optionally, the first telescopic member and the second telescopic member are both mounted on a support frame, the support frame is provided with a distance measuring device, and the clamping plate is provided with an identification device.

[0012] In a second aspect, the utility model provides a workpiece centering device which comprises a conveying line and the workpiece clamping mechanism as described above; the conveying line is used for conveying workpieces; two workpiece clamping mechanisms are arranged on the two sides of the conveying line and used for clamping the workpieces and driving the workpieces to move along the width direction of the conveying line.

[0013] Optionally, the conveying line comprises a mounting frame and a bearing plate used for bearing the workpieces, the mounting frame is provided with a sliding groove extending along the length direction of the conveying line, the bearing plate is arranged above the mounting frame, and the lower end surface of the bearing plate is provided with a sliding part in sliding fit with the sliding groove.

[0014] Optionally, the mounting frame comprises two support seats arranged side by side along the width direction of the conveying line, the upper end of each support seat is provided with a stepped groove, the opening of the stepped groove faces the other support seat, and the stepped grooves of the two support seats jointly define the sliding groove.

[0015] Optionally, the conveying line further comprises a driving mechanism and a transmission assembly, the transmission assembly comprises a first chain wheel, a second chain wheel and a chain, the first chain wheel and the second chain wheel are arranged at intervals on the mounting frame along the length direction of the conveying line, the chain is wound around the first chain wheel and the second chain wheel and connected with the bearing plate, and the driving mechanism is mounted on the mounting frame and used for driving the first chain wheel to rotate.

[0016] The workpiece clamping mechanism has the advantages that: the first telescopic member and the second telescopic member are arranged on the same side of the clamping plate, so that the two telescopic members can apply force to the clamping plate from the same side to drive the clamping plate to clamp the workpiece; the telescopic end of the first telescopic member is hingedly connected to one end of the clamping plate, so that the first telescopic member can drive the clamping plate to move towards the workpiece through telescopic movement of the first telescopic member, so that one end of the clamping plate is in contact with the workpiece; the telescopic end of the second telescopic member is movably connected to the other end of the clamping plate, and the second telescopic member can be used to drive the clamping plate to rotate around the hinged connection point of the second telescopic member through telescopic movement of the second telescopic member, so that the second telescopic member can continue to drive the clamping plate to rotate around the hinged connection point of the first telescopic member towards the workpiece when one end of the clamping plate is in contact with the workpiece, so that the other end of the clamping plate is also in contact with the workpiece, that is, the process of rotating the clamping plate is increased under the condition that the clamping plate has contacted the workpiece, so that the part of the surface of the clamping plate that has not contacted the workpiece can be attached to the surface of the workpiece, and the clamping plate can be fully in contact with the surface of the workpiece, the contact area is relatively increased, stress concentration is prevented, and damage to the surface of the workpiece is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of a workpiece clamping mechanism according to an embodiment of the present application, in which the first telescopic member and the second telescopic member are not extended;

[0018] Figure 2 FIG. 2 is a schematic view of the workpiece clamping mechanism according to the embodiment of the present application, in which the first telescopic member is extended;

[0019] Figure 3 FIG. 3 is a structural schematic view of the workpiece clamping mechanism according to the embodiment of the present application;

[0020] Figure 4 FIG. 4 is a structural schematic view of a workpiece centering device according to an embodiment of the present application;

[0021] Figure 5 FIG. 5 is a side view of the workpiece centering device according to the embodiment of the present application;

[0022] Figure 6 FIG. 6 is a top view of the workpiece centering device according to the embodiment of the present application;

[0023] Figure 7 FIG. 7 is a structural schematic view of a conveying line according to an embodiment of the present application, at an angle;

[0024] Figure 8 FIG. 8 is a structural schematic view of the conveying line according to the embodiment of the present application, at another angle; Figure 5

[0025] Figure 9

[0026] Figure 10 ​​The utility model discloses a structure schematic diagram of driving mechanism and transmission assembly of embodiment.

[0027] Mark explanation:

[0028] 10, workpiece clamping mechanism, 11, clamping plate, 111, strip hole, 112, antiskid piece, 113, mounting boss, 12, first telescopic piece, 121, articulated shaft, 13, second telescopic piece, 131, connecting shaft, 132, limiting portion, 14, identification device, 15, distance measuring device, 16, support frame, 161, stand, 1611, supporting leg, 162, support plate, 163, baffle, 17, protective cover, 20, conveying line, 21, mounting frame, 211, support seat, 2111, support plate, 2112, mounting cavity, 212, connecting plate, 213, base frame, 2131, supporting leg, 22, bearing plate, 23, sliding groove, 24, sliding part, 25, driving mechanism, 251, first pulley, 252, second pulley, 253, belt, 254, motor, 255, synchronous shaft, 26, transmission assembly, 261, first sprocket, 262, second sprocket, 263, chain. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. Although some embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for illustrative purposes, and are not used to limit the protection scope of the utility model.

[0030] The Z axis in the drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z axis represents the upper side, and the negative direction of the Z axis represents the lower side. The X axis in the drawings represents the horizontal direction, which is designated as the front-rear position, and the positive direction of the X axis represents the front side, and the negative direction of the X axis represents the rear side. The Y axis in the drawings represents the left-right position, and the positive direction of the Y axis represents the left side, and the negative direction of the Y axis represents the right side. It should be noted that the meanings of the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0031] The term "include" and variations thereof, as used in this document, mean "to include, without limitation"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optional" means "optional in some embodiments". Related definitions are given throughout the detailed description. It is to be noted that the concepts mentioned in the present application are illustrative and not restrictive, and those skilled in the art should understand that "one" "multiple" modification is illustrative and not restrictive, and unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0032] It should be noted that the modification of "one" "multiple" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that "one" "multiple" modification is illustrative and not restrictive, and unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0033] The utility model provides a workpiece clamping mechanism and workpiece centering device to reduce the surface damage generated when the workpiece is clamped. The following will be described in detail in combination with specific embodiments.

[0034] As Figure 1 shown, the utility model discloses a workpiece clamping mechanism 10 for automobile production line, the workpiece clamping mechanism includes clamping plate 11, first telescopic part 12 and second telescopic part 13, first telescopic part 12 and second telescopic part 13 are located at the same side of clamping plate 11, the telescopic end of first telescopic part 12 is hinged to one end of clamping plate 11, the telescopic end of second telescopic part 13 is movably connected to the other end of clamping plate 11, and second telescopic part 13 is used to drive clamping plate 11 to rotate around the hinge point of clamping plate 11 and first telescopic part 12.

[0035] Specifically, the automobile production line can be an automobile painting production line. It should be noted that the specific form of the first telescopic part 12 and the second telescopic part 13 is not limited, for example, it can be an electric push rod, a hydraulic cylinder, etc. In addition, the hinge mode of the first telescopic part 12 and the clamping plate 11 is not limited, which can be that the first telescopic part 12 is hinged to the clamping plate 11 through a hinge shaft 121, or the first telescopic part 12 is hinged to the clamping plate 11 through a spherical hinge. For the workpiece clamping mechanism 10, the process of clamping the workpiece is as follows: first, the first telescopic part 12 is extended (see Figure 2 ) to make one end of the clamping plate 11 contact the workpiece, and then the second telescopic part 13 is extended (the second telescopic part 13 continues to extend in the Figure 2 state) to make the clamping plate 11 rotate around the hinge point of the clamping plate 11 and the first telescopic part 12 to approach the workpiece, until the other end of the clamping plate 11 also contacts the workpiece, and finally the entire side surface of the clamping plate 11 is attached to the surface of the workpiece.

[0036] In the embodiment, the first telescopic member 12 and the second telescopic member 13 are arranged on the same side of the clamping plate 11, so that the two telescopic members can apply force to the clamping plate 11 from the same side of the clamping plate 11 to drive the clamping plate 11 to release the workpiece. The telescopic end of the first telescopic member 12 is hingedly connected to one end of the clamping plate 11, so that the first telescopic member 12 can drive the clamping plate 11 to move towards the workpiece by telescoping itself, so as to realize that one end of the clamping plate 11 is in contact with the workpiece. The telescopic end of the second telescopic member 13 is movably connected to the other end of the clamping plate 11, and the second telescopic member 13 can be used to drive the clamping plate 11 to rotate around the hinged point by telescoping itself, so that when one end of the clamping plate 11 is in contact with the workpiece, the second telescopic member 13 can continue to drive the clamping plate 11 to rotate around the hinged point towards the workpiece, so that the other end of the clamping plate 11 is also in contact with the workpiece. That is, in the case that the clamping plate 11 has contacted the workpiece, the process of rotating the clamping plate 11 is increased, so that the part of the surface of the clamping plate 11 not in contact with the workpiece can also be attached to the surface of the workpiece, thereby ensuring that the side surface of the clamping plate 11 is in full contact with the surface of the workpiece, the contact area is relatively increased, stress concentration is prevented, and damage to the surface of the workpiece is reduced.

[0037] Optionally, as shown in Figure 1 , the first telescopic member 12 and the second telescopic member 13 are arranged in the conveying direction of the automobile production line.

[0038] Specifically, the automobile production line can include a workpiece centering device, and the workpiece centering device can include a conveying line and a workpiece clamping mechanism located on both sides of the conveying line. The conveying direction of the automobile production line can be the length direction of the conveying line (i.e. the X-axis direction of Figure 4 .

[0039] In the optional embodiment, it can be understood that the length direction of the side surface of the workpiece is generally parallel to the conveying direction of the automobile production line after the workpiece enters the automobile production line. The first telescopic member 12 and the second telescopic member 13 are arranged in the conveying direction of the automobile production line, that is, the first telescopic member 12 and the second telescopic member 13 are arranged in parallel and spaced apart in the length direction of the workpiece, so that the workpiece can be uniformly stressed in the length direction when clamped, which is beneficial to improve the clamping stability and reduce damage to the workpiece.

[0040] Optionally, the telescopic end of the second telescopic member 13 is reciprocally movably connected to the clamping plate 11 in a direction towards the hinged point of the clamping plate 11.

[0041] It should be noted that the direction towards the hinged point of the clamping plate 11 is the direction from the non-hinged end of the clamping plate 11 to the hinged end of the clamping plate 11. For example, in Figure 1 , the direction towards the hinged point of the clamping plate 11 is the length direction of the clamping plate 11.

[0042] In the alternative embodiment, the telescopic end of the second telescopic member 13 is reciprocally movably connected to the clamping plate 11 in the direction towards the hinge point of the clamping plate 11, so that the telescopic end of the second telescopic member 13 can be moved towards or away from the hinge point of the clamping plate 11 when the second telescopic member 13 is telescoped, thereby enabling the clamping plate 11 to rotate smoothly about the hinge point.

[0043] In addition, the specific implementation of the reciprocally movable connection of the telescopic end of the second telescopic member 13 to the clamping plate 11 in the direction towards the hinge point of the clamping plate 11 is not limited.

[0044] For example, as shown in FIGS. 1, 2 and 3, the clamping plate 11 is provided with a mounting boss 113 on one side thereof, and the mounting boss 113 is provided with a strip-shaped hole 111 extending in the direction towards the hinge point of the clamping plate 11; the telescopic end of the second telescopic member 13 is provided with a connecting shaft 131 inserted into the strip-shaped hole 111. Figure 1 and Figure 2 For example, as shown in FIGS. 1, 2 and 3, the clamping plate 11 is provided with a mounting boss 113 on one side thereof, and the mounting boss 113 is provided with a strip-shaped hole 111 extending in the direction towards the hinge point of the clamping plate 11; the telescopic end of the second telescopic member 13 is provided with a connecting shaft 131 inserted into the strip-shaped hole 111.

[0045] In the alternative embodiment, the strip-shaped hole 111 extends in the direction towards the hinge point of the clamping plate 11, and the connecting shaft 131 is inserted into the strip-shaped hole 111, i.e., the strip-shaped hole 111 and the connecting shaft 131 are cooperated to achieve the reciprocally movable connection of the telescopic end of the second telescopic member 13 to the clamping plate 11 in the direction towards the hinge point of the clamping plate 11, so that when the second telescopic member 13 is telescoped, the second telescopic member 13 can move the connecting shaft 131 along the strip-shaped hole 111 and rotate the connecting shaft 131 in the strip-shaped hole 111, thereby enabling the clamping plate 11 to rotate about the hinge point with the first telescopic member 12, so as to ensure that the end side of the clamping plate 11 away from the first telescopic member 12 can also closely contact the surface of the workpiece, thereby ensuring the sufficiency of the contact of the side surface of the clamping plate 11 with the surface of the workpiece, greatly improving the stress concentration and reducing the damage to the workpiece when the workpiece is clamped and centered.

[0046] For example, as shown in FIGS. 1, 2 and 3, the clamping plate 11 is provided with a mounting boss 113 on one side thereof, and the mounting boss 113 is provided with a strip-shaped hole 111 extending in the direction towards the hinge point of the clamping plate 11; the telescopic end of the second telescopic member 13 is provided with a connecting shaft 131 inserted into the strip-shaped hole 111.

[0047] For example, as shown in FIGS. 1, 2 and 3, the clamping plate 11 is provided with a mounting boss 113 on one side thereof, and the mounting boss 113 is provided with a strip-shaped hole 111 extending in the direction towards the hinge point of the clamping plate 11; the telescopic end of the second telescopic member 13 is provided with a connecting shaft 131 inserted into the strip-shaped hole 111.

[0048] In the alternative embodiment, the first telescopic member 12 is hinged to one end of the clamping plate 11 through the circular hole and the hinge shaft 121, which is simple in structure and convenient to install.

[0049] Optionally, as shown in the figure, the second telescopic member 13 comprises two limiting parts 132 connected to the two ends of the connecting shaft 131 respectively extending out of the strip-shaped hole 111. Figure 1

[0050] In the alternative embodiment, since the two ends of the connecting shaft 131 are connected to the two limiting parts 132 on the upper and lower sides of the strip-shaped hole 111 respectively, the two limiting parts 132 neither interfere with the movement of the connecting shaft 131 relative to the strip-shaped hole 111 nor limit the connecting shaft 131 from being pulled out of the strip-shaped hole 111 along the axial direction of the connecting shaft 131, thereby improving the connection stability of the second telescopic member 13 and the clamping plate 11.

[0051] Optionally, as shown in the figure, Figure 1 The side of the clamping plate 11 away from the first telescopic member 12 and the second telescopic member 13 is provided with an anti-skid sheet 112.

[0052] Specifically, the anti-skid sheet 112 can be made of rubber, silicone or the like, which has good friction performance and certain flexibility and can be attached to the surface of the workpiece.

[0053] In the alternative embodiment, by providing the anti-skid sheet 112 on the side of the clamping plate 11, the friction between the side of the clamping plate 11 and the surface of the workpiece can be increased, thereby preventing the clamping plate 11 from sliding after clamping the workpiece and ensuring the centering effect of the workpiece.

[0054] Optionally, as shown in the figure, Figure 1 The workpiece clamping mechanism 10 further comprises a support frame 16, the first telescopic member 12 and the second telescopic member 13 are installed on the support frame 16, the support frame 16 is provided with a distance measuring device 15, and the clamping plate 11 is provided with an identification device 14.

[0055] Specifically, the support frame 16 can comprise a plurality of columns 161, a support plate 162 provided on the upper ends of the plurality of columns 161, and a baffle 163 provided on the upper end of the support plate 162, the first telescopic member 12 and the second telescopic member 13 can be installed on the support plate 162, and the fixed ends of the first telescopic member 12 and the second telescopic member 13 can be connected to the baffle 163, so as to support and stop the first telescopic member 12 and the second telescopic member 13 and ensure that they can be smoothly telescoped. In addition, as shown in the figures, Figure 1 and Figure 2 The lower end of each column can be provided with a supporting leg 1611, which can ensure that the support frame 16 is stably supported on the ground.

[0056] ​The identification device 14 can be used to identify the workpiece. For example, when the workpiece is a vehicle body, the identification device 14 can be used to identify the vehicle model of the vehicle body. It should be noted that the identification device 14 can be provided with one or more, which is not limited here, and preferably multiple, to ensure the accuracy of the identification of the workpiece type. Specifically, the identification device 14 can send the identified type information to the control system, and the control system can determine the size and shape of the workpiece based on the type information, and then determine the angle of rotation required for the clamping plate 11 to be attached to the surface of the workpiece based on the size and shape information, and then determine the extension amount of the second telescopic member 13 based on the angle of rotation and generate a corresponding control instruction to the second telescopic member 13 to control the corresponding telescopic action of the second telescopic member 13. The distance measuring device 15 can be used to detect the distance between the workpiece and the clamping plate 11, for example, the distance measuring device 15 can use a laser distance measuring sensor. Specifically, the distance measuring device 15 can send the detected distance information to the control system, and the control system can determine the extension amount of the first telescopic member 12 based on the distance information and generate a corresponding control instruction to the first telescopic member 12 to control the corresponding telescopic action of the first telescopic member 12.

[0057] In the optional embodiment, by arranging the distance measuring device 15 on the support frame 16, the distance measuring device 15 will not move with the telescopic member, which is beneficial to ensure the accuracy of the distance measurement. By arranging the identification device 14 on the clamping plate 11, the identification device 14 can be closer to the workpiece to be clamped, which is beneficial to improve the accuracy of the identification.

[0058] Optionally, as shown in Figure 3 The workpiece clamping mechanism 10 can further include a protective cover 17 arranged above the support plate 162 and covering the first telescopic member 12 and the second telescopic member 13 to protect the two telescopic members.

[0059] As shown in Figure 4 to Figure 6 The utility model embodiment provides a kind of workpiece centering device, including conveying line 20 and the workpiece clamping mechanism 10 as described above;The conveying line 20 is used to transport workpiece;Two described workpiece clamping mechanisms 10 are separately arranged at the two sides of the conveying line 20, for clamping the workpiece and driving the workpiece moves along the width direction of the conveying line 20.

[0060] The workpiece centering device centers the workpiece in the following manner: first, the workpiece is placed on the conveying line 20, then the workpiece is conveyed to a preset position by the conveying line 20, then the workpiece clamping mechanisms 10 on both sides of the conveying line 20 are synchronously extended to clamp the workpiece together, then it is detected whether the workpiece is centered in the preset position along the width direction of the conveying line 20, when it is detected that the workpiece is not centered, the two workpiece clamping mechanisms 10 are simultaneously adjusted, that is, the first telescopic member 12 and the second telescopic member 13 of each workpiece clamping mechanism 10 are synchronously extended or retracted to drive the workpiece to move relative to the preset position along the width direction of the conveying line 20 until the workpiece is centered, and finally the workpiece is centered.

[0061] In the embodiment, the workpiece is centered by respectively arranging the workpiece clamping mechanisms 10 on both sides of the conveying line 20 to clamp and move the workpiece together, so that the workpiece can be centered in the preset position, and the situation that the paint film on one side of the workpiece is too thick and the paint film on the other side is too thin during painting due to position deviation can be avoided, thereby improving the painting quality of the workpiece.

[0062] Optionally, as shown in Figure 7 and Figure 8 , the conveying line 20 comprises a mounting frame 21 and a carrying plate 22 for carrying the workpiece, the mounting frame 21 is provided with a sliding groove 23 extending along the length direction of the conveying line 20, and the carrying plate 22 is arranged above the mounting frame 21 and is provided with a sliding part 24 at the lower end surface thereof which is in sliding cooperation with the sliding groove 23.

[0063] In the optional embodiment, the carrying plate 22 is used as a component for carrying and conveying the workpiece, so that the workpiece is easy to place and move on the carrying plate 22 to achieve centering; in addition, the mounting frame 21 is provided with the sliding groove 23 extending along the length direction of the conveying line 20, and the carrying plate 22 is provided with the sliding part 24 at the lower end surface thereof which is in sliding cooperation with the sliding groove 23, so that the sliding part 24 slides along the sliding groove 23 to drive the carrying plate 22 to move stably along the length direction of the conveying line 20, thereby ensuring the stability of the workpiece conveying.

[0064] Optionally, as shown in Figure 7 and Figure 8 , the mounting frame 21 comprises two support seats 211 arranged side by side along the width direction of the conveying line 20, and each support seat 211 is provided with a stepped groove at the upper end thereof, the opening of the stepped groove faces the other support seat 211, and the stepped grooves of the two support seats 211 jointly define the sliding groove 23.

[0065] Specifically, the support seat 211 can include two support plates arranged at intervals along the width direction of the conveying line 20, and in the two support plates 2111 of the support seat 211, the upper end of the support plate 2111 close to the other support seat 211 is lower than the upper end of the support plate 2111 away from the other support seat 211, so that the two support plates 2111 have a height difference, and the upper ends of the two support plates 2111 form a stepped groove open to the other support seat 211, wherein the side surface of the upper end of the support plate 2111 away from the other support seat 211 forms the side surface of the stepped groove, and the top surface of the upper end of the support plate 2111 close to the other support seat 211 forms the bottom surface of the stepped groove. In addition, the mounting rack 21 can also include a connecting plate 212 connected between the two support seats 211 to improve the structural strength of the two support seats 211. Further, the mounting rack 21 can also include a base frame 213, and the two support seats 211 can be arranged at the upper end of the base frame 213, and the lower end of the base frame 213 can be provided with support feet 2131, which can ensure that the mounting rack 21 is stably supported on the ground.

[0066] In this alternative embodiment, the chute 23 is formed by the stepped grooves of the two support seats 211, so that the two support seats 211 not only serve to support the bearing plate 22, but also do not need to be additionally provided with a groove-shaped structure on the mounting rack 21 for the sliding part 24 to slide, which is conducive to simplifying the overall structure of the mounting rack 21.

[0067] Alternatively, as shown in Figure 9 and Figure 10 , the conveying line 20 further includes a driving mechanism 25 and a transmission assembly 26, the transmission assembly 26 includes a first sprocket 261, a second sprocket 262, and a chain 263, the first sprocket 261 and the second sprocket 262 are arranged at intervals along the length direction of the conveying line 20 on the mounting rack 21, the chain 263 is wound around the first sprocket 261 and the second sprocket 262 and connected with the bearing plate 22, and the driving mechanism 25 is installed on the mounting rack 21 and used to drive the first sprocket 261 to rotate.

[0068] Specifically, as shown in Figure 7 , an installation cavity 2112 can be formed in the support seat 211, and the transmission assembly 26 can be contained in the installation cavity 2112, so that the transmission assembly 26 can be protected in the installation cavity 2112, improving the service life. Further, as shown in Figure 7 and Figure 10As shown, two transmission assemblies 26 can be provided, and the two transmission assemblies 26 are respectively installed in the mounting cavities 2112 of the two support seats 211. The chains 263 of the two transmission assemblies 26 are respectively connected to the two ends of the bearing plate 22 along the width direction of the conveying line 20. The driving mechanism 25 is drivingly connected to the first sprockets 261 of the two transmission assemblies 26. In this way, when the driving mechanism 25 is started, the two ends of the bearing plate 22 can be synchronously moved by the chains 263 of the two transmission assemblies 26, so as to effectively prevent the bearing plate 22 from being laterally deviated during movement.

[0069] In the optional embodiment, the first sprocket 261 and the second sprocket 262 are arranged at intervals along the length direction of the conveying line 20 on the mounting frame 21. The chain 263 is arranged around the first sprocket 261 and the second sprocket 262 and is connected to the bearing plate 22. When the driving mechanism 25 drives the first sprocket 261 to rotate, the chain 263 can move around the first sprocket 261 and the second sprocket 262, thereby driving the bearing plate 22 to move along the length direction of the conveying line 20. In this way, the workpiece can be quickly and continuously conveyed, so as to ensure that the workpiece can timely enter the preset position, reduce the downtime and waiting time during conveying of the workpiece, improve the production efficiency and rhythm, and avoid the workpiece from being exposed in the air for a long time and being polluted on the surface.

[0070] Optionally, as shown in Figure 9 and Figure 10 The driving mechanism 25 includes a first pulley 251, a second pulley 252, a belt 253 and a motor 254. The first pulley 251 is coaxially connected with the first sprocket 261. The belt 253 is arranged around the first pulley 251 and the second pulley 252. The output end of the motor 254 is connected with the second pulley 252.

[0071] Specifically, two transmission assemblies 26 can be provided. The first sprockets 261 of the two transmission assemblies 26 can be connected with a synchronous shaft 255. The first pulley 251 can be integrally arranged with the synchronous shaft 255. When the motor 254 drives the first pulley 251 to rotate, the first pulley 251 can drive the first sprockets 261 of the two transmission assemblies 26 to synchronously rotate through the synchronous shaft 255, so as to synchronously drive the two first sprockets 261. In addition, the mounting frame 21 can further include a base frame 213. The motor 254 can be installed at the upper end of the base frame 213, so as to be supported and fixed.

[0072] In the alternative embodiment, since the first pulley 251 is coaxially connected with the first sprocket 261, the belt 253 is arranged around the first pulley 251 and the second pulley 252, and the motor 254 is connected with the second pulley 252, so when the motor 254 is started, the second pulley 252 can rotate, thereby driving the first pulley 251 to rotate through the belt 253, and further driving the first sprocket 261 to rotate, realizing the belt transmission between the motor 254 and the first sprocket 261, and the belt transmission structure is simple, which is conducive to reducing the complexity of disassembly during subsequent maintenance.

[0073] Although the utility model discloses as above, the protection scope of the utility model is not limited to this only. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will all fall into the protection scope of the utility model.

Claims

1. A workpiece clamping mechanism, characterized in that, For use in automotive production lines, the workpiece clamping mechanism includes a clamping plate (11), a first telescopic member (12), and a second telescopic member (13). The first telescopic member (12) and the second telescopic member (13) are located on the same side of the clamping plate (11). The telescopic end of the first telescopic member (12) is hinged to one end of the clamping plate (11), and the telescopic end of the second telescopic member (13) is movably connected to the other end of the clamping plate (11). The second telescopic member (13) is used to drive the clamping plate (11) to rotate around its hinge point with the first telescopic member (12).

2. The workpiece clamping mechanism according to claim 1, characterized in that, The telescopic end of the second telescopic member (13) is reciprocally connected to the clamping plate (11) along the direction toward the hinge point of the clamping plate (11).

3. The workpiece clamping mechanism according to claim 1 or 2, characterized in that, The clamping plate (11) has a mounting boss (113) on one side, and the mounting boss (113) has a strip hole (111) extending in the direction toward the hinge point of the clamping plate (11); the telescopic end of the second telescopic member (13) is provided with a connecting shaft (131) that is inserted into the strip hole (111).

4. The workpiece clamping mechanism according to claim 1 or 2, characterized in that, The clamping plate (11) has a mounting boss (113) on one side. The mounting boss (113) has a sliding groove extending in the direction toward the hinge point of the clamping plate (11). The telescopic end of the second telescopic member (13) is hinged to a slider that slides in cooperation with the sliding groove.

5. The workpiece clamping mechanism according to claim 3, characterized in that, The mounting boss (113) is also provided with a circular hole parallel to the axial direction of the strip hole (111), and the telescopic end of the first telescopic member (12) is provided with a hinge shaft (121) that is hinged to the circular hole.

6. The workpiece clamping mechanism according to claim 1, characterized in that, It also includes a support frame (16), the first telescopic member (12) and the second telescopic member (13) are both installed on the support frame (16), the support frame (16) is provided with a distance measuring device (15), and the clamping plate (11) is provided with an identification device (14).

7. A workpiece centering device, characterized in that, It includes a conveyor line (20) and a workpiece clamping mechanism (10) as described in any one of claims 1 to 6; the conveyor line (20) is used to convey workpieces; two workpiece clamping mechanisms (10) are respectively disposed on both sides of the conveyor line (20) for clamping the workpieces and driving the workpieces to move along the width direction of the conveyor line (20).

8. The workpiece centering device according to claim 7, characterized in that, The conveyor line (20) includes a mounting frame (21) and a support plate (22) for carrying the workpiece. The mounting frame (21) is provided with a groove (23) extending along the length of the conveyor line (20). The support plate (22) is located above the mounting frame (21), and its lower end face is provided with a sliding part (24) that slides with the groove (23).

9. The workpiece centering device according to claim 8, characterized in that, The mounting frame (21) includes two support seats (211) arranged side by side along the width direction of the conveyor line (20). Each support seat (211) has a stepped groove at its upper end, and the opening of the stepped groove faces the other support seat (211). The stepped grooves of the two support seats (211) together define the slide groove (23).

10. The workpiece centering device according to claim 8, characterized in that, The conveyor line (20) further includes a drive mechanism (25) and a transmission assembly (26). The transmission assembly (26) includes a first sprocket (261), a second sprocket (262), and a chain (263). The first sprocket (261) and the second sprocket (262) are spaced apart on the mounting frame (21) along the length of the conveyor line (20). The chain (263) is wound around the first sprocket (261) and the second sprocket (262) and connected to the support plate (22). The drive mechanism (25) is mounted on the mounting frame (21) and is used to drive the first sprocket (261) to rotate.

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