Correction device

Abstract

The present invention discloses a correction device, comprising: a workbench; a tray, which is used to support a workpiece; a top sleeve, which is located below the workpiece; a driving mechanism, which is at least used to drive the top sleeve to rise so as to push the workpiece off the tray and to drive the top sleeve to drive the workpiece to rotate after the top sleeve pushes the workpiece off the tray; a distance sensor, which is arranged on the workbench, and the distance sensor obtains a sudden change signal caused by the sudden change structure of the workpiece by the rotation of the workpiece; a controller, which determines the reference horizontal posture of the workpiece according to the sudden change signal, obtains a comparison result by comparing it with the preset horizontal posture, and controls the driving mechanism according to the comparison result, so that the top sleeve drives the workpiece to rotate from the reference horizontal posture to the preset horizontal posture.

Description

Technical Field

[0001] The invention relates to the technical field of assembly equipment, and in particular to a correction device. Background Art

[0002] In the assembly line, when two workpieces are assembled by bolts, there are generally two processes:

[0003] The first process is to place two workpieces to be assembled together in a certain matching manner, for example, the two workpieces are placed in an overlapping manner (of course, there is also a matching manner that combines overlapping and socketing). In this process, it is necessary to adjust the horizontal posture of one of the two workpieces relative to the other workpiece so that the through holes of the two workpieces are aligned (or coaxial), and then the two workpieces in this state are transported to the second process.

[0004] The second process is: inserting bolts into the aligned through holes of the two workpieces, and then inserting nuts onto the bolts manually or using automatic screwing equipment and tightening the nuts to complete the assembly of the two workpieces.

[0005] In the first process of the prior art, only the relative horizontal posture of the two workpieces is adjusted to an angle state in which the through holes are aligned, while the absolute horizontal posture of the two workpieces is not adjusted. This results in: in the second process, the working rod of the screwing equipment is usually not aligned with the bolt, which leads to the need to adjust the horizontal posture of the screwing equipment before the knob is turned so that the working rod and the bolt can be aligned to complete the tightening of the nut. What's worse is that the absolute horizontal posture of each pair of workpieces transported to the second process is different, which requires the screwing equipment to be adjusted before the screwing operation, reducing assembly efficiency.

[0006] The above-mentioned absolute horizontal state can be understood as: the horizontal posture of the two workpieces relative to other workpieces on the assembly line, for example, the horizontal posture relative to the screwing equipment.

[0007] The above-mentioned horizontal posture can be understood as the angular state of the workpiece. For example, if the workpiece has a through hole, the position of the through hole can represent the horizontal posture of the workpiece. Summary of the invention

[0008] In view of the above problems in the prior art, an object of the present invention is to provide a correction device to solve the above problems in the prior art.

[0009] In order to achieve the above object, the present invention provides a correction device, which is used to make a workpiece obtain a preset horizontal posture, wherein the workpiece has a sudden change structure, and the correction device comprises:

[0010] Workbench;

[0011] A tray, which is used to support the workpiece;

[0012] A top sleeve, which is located below the workpiece;

[0013] A driving mechanism, which is at least used to drive the top sleeve to rise so as to push the workpiece off the tray and to drive the top sleeve to rotate the workpiece after the top sleeve pushes the workpiece off the tray;

[0014] A distance sensor is disposed on the workbench, and the distance sensor obtains a sudden change signal caused by a sudden change structure of the workpiece by rotating the workpiece;

[0015] A controller determines the reference horizontal posture of the workpiece according to the mutation signal, obtains a comparison result by comparing it with a preset horizontal posture, and controls a driving mechanism according to the comparison result so that the top sleeve drives the workpiece to rotate from the reference horizontal posture to the preset horizontal posture.

[0016] In some optional embodiments, the mutation structure includes a groove having two opposite vertical groove walls and a horizontal groove bottom. The workpiece rotates so that the two groove walls of the groove pass through the distance sensor successively. The distance sensor obtains the mutation signal by detecting the distance difference between the bottom of the groove and the area outside the groove.

[0017] In some optional embodiments, the distance sensor is disposed below the workpiece and is located on a circle determined by the rotation of the sink as the workpiece rotates.

[0018] In some optional embodiments, the driving mechanism at least includes:

[0019] A first telescopic cylinder is disposed below the workbench and is used to drive the top sleeve to rise and fall so as to protrude above the tray or to descend below the tray;

[0020] A servo motor is controlled by the controller, and the servo motor is used to drive the top sleeve to rotate.

[0021] In some optional embodiments, the driving mechanism further comprises:

[0022] A first mounting plate connected to the bottom of the workbench by means of a first vertically disposed guide column;

[0023] The second mounting plate is arranged above the first mounting plate, and the first guide column passes through the second mounting plate; wherein:

[0024] The cylinder body of the first telescopic cylinder is fixed below the first mounting plate, and the telescopic rod of the first telescopic cylinder passes through the first mounting plate and is connected to the second mounting plate;

[0025] The top sleeve is arranged above the second mounting plate;

[0026] The servo motor is mounted on the second mounting plate to drive the top sleeve to rotate.

[0027] In some optional embodiments, the servo motor drives the top sleeve to rotate via a reducer.

[0028] In some optional embodiments, the driving mechanism further includes a second telescopic cylinder, which is used to drive the pallet to rise and fall, so as to allow the workpiece to move above the pallet by driving the pallet to descend, and to support the workpiece by driving the pallet to rise.

[0029] In some optional embodiments, the cylinder body of the second telescopic cylinder is arranged at the bottom of the workbench, and the telescopic rod of the second telescopic cylinder passes through the workbench and is connected to the tray; wherein:

[0030] A second vertical guide column is provided at the bottom of the pallet. The second guide column passes through the workbench so that when the second telescopic cylinder drives the pallet, the second guide column is used to guide the pallet so that the pallet can be strictly lifted vertically.

[0031] In some optional embodiments, when the workpiece is mounted on a plate-like body having a positioning groove at the bottom, a positioning column is formed on the tray, and the tray is raised so that the positioning column extends into the positioning groove of the plate-like body.

[0032] In some optional embodiments, the distance sensor is an infrared distance sensor.

[0033] Compared with the prior art, the beneficial effects of the correction device of the present invention are:

[0034] The correction device of the present invention utilizes the driven rotating top sleeve to make the distance sensor obtain a mutation signal, and obtains the reference horizontal posture of the workpiece according to the mutation signal, and obtains the preset horizontal posture matching the subsequent process by driving the top sleeve to rotate again, thereby avoiding the need to adjust the horizontal posture of the two workpieces as a whole again when assembling with another workpiece, thereby improving the work efficiency of the subsequent process.

[0035] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0036] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the disk.

[0039] Figure 2 This is the front view of the disk.

[0040] Figure 3 It is a schematic diagram of the three-dimensional structure of the disc body and the plate body.

[0041] Figure 4 A schematic diagram of the three-dimensional structure of the correction device provided by an embodiment of the present invention from a first viewing angle.

[0042] Figure 5 A schematic diagram of the three-dimensional structure of the correction device provided by an embodiment of the present invention from a second viewing angle.

[0043] Figure 6 for Figure 5 An enlarged view of detail A.

[0044] Figure 7 A schematic diagram of the three-dimensional structure of a driving mechanism in a correction device provided in an embodiment of the present invention.

[0045] Figure 8 A top view of a correction device provided by an embodiment of the present invention.

[0046] Fig. 9 for Figure 8 BB section view (the tray body has not yet moved to the top of the tray).

[0047] Fig.10 for Figure 8 BB section view (the tray has moved to the top of the tray).

[0048] Fig.11 for Figure 8 BB section view (the tray body has moved above the tray, and the tray rises to support the tray-shaped body).

[0049] Fig.12 for Figure 8 BB section view (the top sleeve has risen to push the disc body away from the plate-like body).

[0050] Fig.13 for Figure 8 BB section view (the top sleeve drives the disc to rotate).

[0051] Fig.14 The present invention is a three-dimensional structural diagram of an assembly line 300 for installing a correction device provided in an embodiment of the present invention.

[0052] Reference numerals:

[0053] 10-workbench; 20-tray; 21-positioning column; 30-top sleeve; 40-driving mechanism; 41-first telescopic cylinder; 411-telescopic rod; 42-servo motor; 421-reducer; 43-first mounting plate; 44-second mounting plate; 45-first guide column; 46-second guide column; 47-second telescopic cylinder; 471-telescopic rod; 50-distance sensor; 100-disc; 101-block; 102-sink; 1021-sink wall; 200-plate body; 201-positioning groove; 300-assembly line 300. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0057] The present invention aims to disclose a correction device, which is used to make one of the workpieces to be assembled obtain a preset horizontal posture. The so-called horizontal posture refers to: the angular state of the workpiece when it is in a horizontal state. For example, when a disc-shaped workpiece has a marking structure or a functional structure, the projection position of the structure relative to a reference object such as a placed component or a bearing component on a rotating plane reflects the angular state of the workpiece and reflects the horizontal posture of the workpiece.

[0058] The correction device disclosed in the present invention allows one of the workpieces to be assembled to obtain a preset horizontal posture and then be assembled with another workpiece that has also obtained a preset horizontal posture. This not only eliminates the need for the two workpieces to adjust their relative horizontal posture by rotating them during the process of placing them together, but more importantly, eliminates the need for synchronous horizontal posture adjustments in subsequent processes.

[0059] All the following embodiments of the present invention use the disc body 100 of the brake disc as the above-mentioned workpiece. However, this should not be understood as the correction device disclosed in the present invention can only adjust the disc body 100 to a preset horizontal posture. Any workpiece having the characteristics defined in the claims can be adjusted to a preset horizontal state by the correction device of the present invention.

[0060] The sudden change structure of the workpiece defined in the claims may be a process structure which is only intended to obtain a preset horizontal posture setting, or may be a functional structure possessed by the workpiece itself.

[0061] In addition, the correction device disclosed in the present invention can be set on the assembly line 300, and its working process is the previous process of the first process mentioned in the background technology. After the correction device adjusts the workpiece on it to a preset horizontal posture through horizontal transportation, the workpiece is transported to the first process mentioned in the background technology.

[0062] Before introducing the correction device of the present invention, the structure or composition of the disc body 100 selected as an exemplary workpiece and the brake disc to which the disc body 100 belongs are first introduced. The brake disc has a disc body 100 and a hub body, and the disc body 100 and the hub body are locked and assembled by bolts. The disc body 100 and the hub body are both provided with circumferentially arranged through holes, so that after the through holes of the disc body 100 and the hub body are aligned, the bolts can be simultaneously inserted into the aligned through holes and locked by nuts. When the disc body 100 is used as an exemplary workpiece, the purpose of the correction device for adjusting the disc body 100 to a preset horizontal posture is that when the disc body 100 is subsequently placed together with the hub body (the hub body also needs to be pre-adjusted to a preset horizontal posture so that the through holes can be aligned) (such as the first process mentioned in the background technology), the disc body 100 and the hub body can achieve the alignment of the through holes without adjustment, and the more important purpose is: when the nuts of the bolts set in the through holes of the disc body 100 and the hub body are subsequently screwed, all the working rods of the screwing machine for screwing the nuts can be aligned with the nuts without overall adjustment. That is to say, after the correction device adjusts the disc body 100 to the preset horizontal posture, when the disc body 100 is transported to the bottom of the screwing machine (it can be understood that the hub body will also be transported to the screwing machine), all the working rods of the screwing machine are aligned with the through holes of the disc body 100.

[0063] like Figure 1 and Figure 2 As shown, a circle of blocks 101 are arranged circumferentially on the hole wall of the inner hole of the disk body 100 at intervals, and a sink 102 is provided on at least one of the blocks 101. In a subsequent optional embodiment, the sink 102 is selected as a mutation structure.

[0064] like Figure 3 As shown, the tray body 100 is carried by the plate-shaped body 200 . In the subsequent optional embodiments, the correction device operates on the tray body 100 placed on the plate-shaped body 200 .

[0065] In an optional embodiment of the present invention, Figures 4 to 14 As shown, under the action of the assembly line 300 (or under the lifting of the lifting device), the plate body 200 and the tray body 100 can be transported to the top of the correction device. Figure 4 and Figure 5 As shown, the correction device includes: a workbench 10, a tray 20, a top cover 30, a driving mechanism 40, a distance sensor 50 and a controller. Fig.14 As shown, the workbench 10 is located below the assembly line 300. Figure 4 As shown, the workbench 10 is provided with a hollow portion, and the tray 100 is transported to the top of the hollow portion of the workbench 10 through the assembly line 300 (or hoisted by a hoisting device). Fig.10 and 11As shown, the tray 20 is located above the workbench 10. The tray 20 is used to support the tray 20-shaped body, and then support the tray 20 body. The tray 20 also has a hollow portion. The top sleeve 30 is used to pass through the hollow portion of the plate-like body 200 to abut against the tray body 100 (the middle of the plate-like body 200 also has a hollow portion). The driving mechanism 40 is configured to have three driving functions: first, to drive the tray 20 to rise and fall; second, to drive the top sleeve 30 to rise and fall; and third, to drive the top sleeve 30 to rotate. In addition, the driving mechanism 40 makes the order of the actions of the tray 20 and the top sleeve 30 as follows: first, as shown in FIG. Fig. 9 The driving mechanism 40 drives the tray 20 and the top cover 30 to descend to the lowest position, so as to avoid the plate-like body 200. Fig.10 As shown, the plate body 100 is transported to the top of the pallet 20 along with the plate-like body 200 under the action of the conveyor line (or under the lifting of the lifting device); then, as shown in Fig.11 As shown, the driving mechanism 40 drives the tray 20 to rise so that the tray 20 supports the tray 20 body; then, as shown in FIG. Fig.13 As shown, the driving mechanism 40 drives the top cover 30 to rise, and the top cover 30 moves up and passes through the hollow part of the tray 20 and the hollow part of the plate-like body 200 in sequence, and finally the upper end of the top cover 30 is pressed against the block 101 of the inner hole wall of the tray body 100, and the tray body 100 is pushed away from the plate-like body 200. At this time, the tray body 100 is no longer restricted by the plate-like body 200, and then, as shown in FIG. Fig.13 As described above, the driving mechanism 40 drives the top cover 30 to rotate, thereby driving the disc body 100 to rotate.

[0066] like Figures 4 to 6 As shown, the distance sensor 50 is arranged on the working platform, and is specifically arranged at a circumferential position corresponding to a circle with a radius from the sink 102 of the disk body 100 to the rotation center. In this way, when the disk body 100 rotates with the top sleeve 30, the sink 102 is bound to pass above the distance sensor 50. Since the distance between the bottom of the sink 102 and the distance sensor 50 is different from the distance between the area outside the sink 102 (the area outside the sink 102 is divided by the groove wall 1021 as the boundary) and the distance sensor 50, the distance sensor 50 generates a sudden change signal when passing through the sink 102. The controller is electrically connected to the distance sensor 50. After receiving the sudden change signal, the controller can determine the reference horizontal posture of the disk body 100, and calculate the angle difference between the reference horizontal posture and the preset horizontal posture by comparing with the preset horizontal posture. At the same time, the controller controls the driving mechanism 40 to rotate the driving mechanism 40 by the corresponding angle difference to rotate the disk body 100 to the preset horizontal posture.

[0067] It should state:

[0068] 1. When the tray 100 in a preset horizontal posture is linearly transported to the bottom of the screwing machine, the through hole on the tray 100 is directly opposite to the working hole of the screwing machine.

[0069] 2. The reference horizontal posture of the disk body 100 can be set to be the same as the preset reference posture of the disk body 100. At this time, when the distance sensor 50 obtains a sudden change signal, it is only necessary to control the driving mechanism 40 to stop the top sleeve 30 from rotating. However, the reference horizontal posture of the disk body 100 is made to differ from the preset horizontal posture of the disk body 100 by a certain angle as much as possible. The reason is that the driving mechanism 40 is actually unable to stop the rotation of the top sleeve 30 suddenly. If the two postures are the same, that is, when the angle difference is 0, when the controller obtains a sudden change signal from the distance sensor 50, the controller cannot stop the rotation of the top sleeve 30 by the driving mechanism 40, resulting in a large deviation between the actually adjusted horizontal posture of the disk body 100 and the preset horizontal posture. If the two postures are set to have a certain angle difference, when the controller obtains a sudden change signal, the controller enables the driving mechanism 40 to drive the top sleeve 30 to rotate by an angle corresponding to the angle difference, while the rotation speed of the top sleeve 30 can be gradually reduced, and when it rotates to the preset posture of the disk body 100, it stops rotating. In this way, the horizontal posture of the disk body 100 after adjustment is basically the same as the preset horizontal posture.

[0070] The correction device of the present invention utilizes the driven rotating top sleeve 30 to make the distance sensor 50 obtain a mutation signal, and obtains the reference horizontal posture of the workpiece according to the mutation signal, and obtains the preset horizontal posture matching the subsequent process by driving the top sleeve 30 to rotate again, thereby avoiding the need to adjust the horizontal posture of the two workpieces as a whole again when assembling with another workpiece, thereby improving the work efficiency of the subsequent process.

[0071] An optional embodiment of the present invention provides a driving mechanism 40 having the above three driving functions, such as Figures 9 to 13 , and combined with Figures 4 to 8As shown, the driving mechanism 40 includes: a first telescopic cylinder 41, a second telescopic cylinder 47, a servo motor 42, a reducer 421, a first mounting plate 43, a second mounting plate 44, a first guide column 45 and a second guide column 46. The first guide column 45 includes a plurality of first guide columns 45, which are arranged between the first mounting plate 43 and the bottom of the workbench 10, and are fixedly connected to the first mounting plate 43 and the workbench 10. The second mounting plate 44 is arranged above the first mounting plate 43, and the first guide column 45 penetrates the second mounting plate 44, so that the second mounting plate 44 can move vertically under the guidance of the first guide column 45. The cylinder body of the first telescopic cylinder 41 is fixed below the first mounting plate 43, and its telescopic rod 411 penetrates the first mounting plate 43 and is connected to the second mounting plate 44, so that when the telescopic rod 411 of the first telescopic cylinder 41 is extended and retracted, the first mounting plate 43 can be driven to be lifted and lowered. The servo motor 42 is arranged on the second mounting plate 44, the reducer 421 is fixed on the upper plate surface of the second mounting plate 44, the servo motor 42 is connected to the reducer 421 in transmission connection, the top sleeve 30 is connected to the output shaft of the reducer 421, and the top sleeve 30 is in a vertical state, and the top sleeve 30 is lifted and lowered with the vertical movement of the second mounting plate 44. The cylinder body of the second telescopic cylinder 47 is fixed to the bottom of the workbench 10, and its telescopic rod 471 penetrates the workbench 10 and extends out of the workbench 10 and is connected to the pallet 20, and the second guide column 46 includes a plurality of second guide columns 46, the upper ends of the plurality of second guide columns 46 are fixed to the bottom of the pallet 20, and the lower ends thereof penetrate the workbench 10, and the second telescopic cylinder 47 can be lifted and lowered vertically by the extension and retraction of the telescopic rod 471 and the telescopic guiding action of the second guide column 46.

[0072] The working process of the correction device having the above-mentioned driving mechanism 40 is described below:

[0073] like Fig. 9 As shown, when the disk body 100 installed on the plate-like body 200 has not moved to the top of the tray 20, the telescopic rod 411 of the first telescopic cylinder 41 and the telescopic rod 471 of the second telescopic cylinder 47 are in a retracted state, and at the same time the servo motor 42 is in a closed state. At this time, the tray 20 and the top cover 30 are in the lowest position.

[0074] like Fig.10 As shown, when the tray body 100 mounted on the plate-like body 200 moves to the top of the tray 20, first, as shown in Fig.11 As shown, the telescopic rod 471 of the second telescopic cylinder 47 is extended to drive the tray 20 to rise and support the plate-like body 200, and then, as shown in FIG. Fig.12 As shown, the telescopic rod 411 of the first telescopic cylinder 41 is extended to drive the top sleeve 30 to rise so as to push the tray body 100 away from the plate-like body 200 by penetrating the middle of the plate-like body 200, thereby releasing the restriction of the plate-like body 200 on the tray body 100.

[0075] Then, the servo motor 42 is controlled to operate, such as Fig.13 As shown, the reducer 421 drives the top sleeve 30 to drive the disk body 100 to rotate. When the sink 102 of the disk body 100 passes above the distance sensor 50, the distance sensor 50 obtains a sudden change signal, and the controller obtains that the disk body 100 has rotated to the reference horizontal posture. The controller controls the speed and rotation angle of the servo motor 42, so that the top sleeve 30 drives the disk body 100 to rotate to the preset horizontal posture, and then controls the motor to stop rotating, and the disk body 100 remains in the preset horizontal posture.

[0076] Then, the telescopic rod 411 of the first telescopic cylinder 41 is retracted to drive the top cover 30 to descend, and the tray 100 falls back on the plate-like body 200. Then, the telescopic rod 471 of the second telescopic cylinder 47 is retracted to drive the tray 20 to descend to release the restriction on the movement of the plate-like body 200. Under the action of the assembly line 300, the tray 100 moves with the plate-like body 200 and moves to the position and equipment mentioned in the background technology for implementing the first process.

[0077] To achieve the positioning of the tray 20 and the plate-like body 200, as Figure 3 and Fig. 9 As shown, a positioning column 21 is provided on the tray 20, and a positioning groove 201 is opened at the bottom of the plate-like body 200. When the plate-like body 200 falls or the tray 20 rises, the positioning column 21 extends into the positioning groove 201, thereby limiting the relative horizontal movement of the plate-like body 200 and the tray 20.

[0078] The distance sensor 50 mentioned above may be an infrared distance sensor 50 or other types of sensors.

[0079] It should be noted that the above-mentioned controller can be separately set in the distribution box of the correction device. The controller can be a PLC control circuit board or a chip-type controller integrated in a computer. The controller can also be configured to process and control data of components of subsequent processes (such as the two processes provided in the background technology).

[0080] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0081] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0082] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A correction device, used to make a workpiece obtain a preset horizontal posture, wherein the workpiece has a sudden change structure, characterized in that: The correction device comprises: Workbench; A tray, which is used to support the workpiece; A top sleeve, which is located below the workpiece; A driving mechanism, which is at least used to drive the top sleeve to rise so as to push the workpiece off the tray and to drive the top sleeve to rotate the workpiece after the top sleeve pushes the workpiece off the tray; A distance sensor is disposed on the workbench, and the distance sensor obtains a sudden change signal caused by a sudden change structure of the workpiece by rotating the workpiece; A controller, which determines a reference horizontal posture of the workpiece according to the mutation signal, obtains a comparison result by comparing it with a preset horizontal posture, and controls a driving mechanism according to the comparison result so that the top sleeve drives the workpiece to rotate from the reference horizontal posture to the preset horizontal posture; The driving mechanism at least comprises: A first telescopic cylinder is disposed below the workbench and is used to drive the top sleeve to rise and fall so as to protrude above the tray or to descend below the tray; A servo motor, which is controlled by the controller, and the servo motor is used to drive the top sleeve to rotate; The driving mechanism further comprises: A first mounting plate connected to the bottom of the workbench by means of a first vertically disposed guide column; The second mounting plate is arranged above the first mounting plate, and the first guide column passes through the second mounting plate; wherein: The cylinder body of the first telescopic cylinder is fixed below the first mounting plate, and the telescopic rod of the first telescopic cylinder passes through the first mounting plate and is connected to the second mounting plate; The top sleeve is arranged above the second mounting plate; The servo motor is mounted on the second mounting plate to drive the top sleeve to rotate; The servo motor drives the top sleeve to rotate via the reducer; The driving mechanism further includes a second telescopic cylinder, which is used to drive the pallet to rise and fall, so as to allow the workpiece to move above the pallet by driving the pallet to fall, and to support the workpiece by driving the pallet to rise; The cylinder body of the second telescopic cylinder is arranged at the bottom of the workbench, and the telescopic rod of the second telescopic cylinder passes through the workbench and is connected to the tray; wherein: A vertical second guide column is provided at the bottom of the pallet, and the second guide column passes through the workbench so that when the second telescopic cylinder drives the pallet, the second guide column is used to guide the pallet so that the pallet can be strictly lifted vertically; When the workpiece is mounted on a plate-like body having a positioning groove at the bottom, a positioning column is formed on the tray, and the tray is raised so that the positioning column extends into the positioning groove of the plate-like body.

2. The correction device according to claim 1, characterized in that: The mutation structure includes a groove having two opposite vertical groove walls and a horizontal groove bottom. The workpiece rotates so that the two groove walls of the groove pass through the distance sensor successively. The distance sensor obtains the mutation signal by detecting the distance difference between the groove bottom of the groove and the area outside the groove.

3. The correction device according to claim 2, characterized in that: The distance sensor is arranged below the workpiece and is located on a circle determined by the sink rotating with the workpiece.

4. The correction device according to claim 1, characterized in that: The distance sensor is an infrared distance sensor.

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