Press fitting device and subframe bushing press fitting method

Abstract

The application relates to the field of automobile manufacturing, and particularly discloses a press-fitting device and a sub-frame bushing press-fitting method. The press-fitting device comprises a main frame, a rotating disc rotatably connected to the main frame, a first driving member for driving the rotating disc to rotate, a plurality of loading assemblies distributed on the rotating disc along the circumferential direction of the rotating disc, and a press-fitting mechanism arranged on one side of a loading assembly. The loading assembly comprises a connecting seat connected to the rotating disc, an upper pressing head and a lower pressing head oppositely arranged along the up-down direction, a first connecting frame connecting the upper pressing head and the connecting seat, and a second connecting frame connecting the lower pressing head and the connecting seat. The first connecting frame is slidably connected to the connecting seat along the up-down direction. The press-fitting mechanism comprises a press machine arranged above the first connecting frame and used for pressing the first connecting frame downward. The press-fitting device and the sub-frame bushing press-fitting method can automatically press the bushing on the sub-frame, the press-fitting and feeding of the bushing can be simultaneously performed, and the time required for press-fitting of multiple bushings is compressed as a whole.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing, and more particularly to a press-fitting device and a method for press-fitting subframe bushings. Background Technology

[0002] In recent years, with the rapid development of the automotive industry, the demand for chassis components such as vehicle subframes and control arms has increased, thus requiring improvements in the production efficiency of subframes. During subframe production, bushings need to be press-fitted onto the subframe. In existing technologies, a pressing device is used to press-fit the bushings. During pressing, the bushings are first manually installed on the press head, and then the pressing device performs the pressing. The bushing loading and pressing are sequential, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a pressing device and a subframe bushing pressing method that enable simultaneous bushing pressing and feeding.

[0004] To achieve the above objectives, the present invention proposes a pressing device, comprising a main frame, a turntable rotatably connected to the main frame, a first driving member for driving the turntable to rotate, a plurality of loading components distributed on the turntable along the circumferential direction of the turntable, and a pressing mechanism corresponding to one side of a loading component. The loading component includes a connecting seat connected to the turntable, an upper pressing head and a lower pressing head arranged opposite each other in the vertical direction, a first connecting frame connecting the upper pressing head and the connecting seat, and a second connecting frame connecting the lower pressing head and the connecting seat. The first connecting frame is slidably connected to the connecting seat in the vertical direction. The pressing mechanism includes a press disposed above the first connecting frame for pressing down the first connecting frame. The loading component further includes a first resetting member disposed between the connecting seat and the first connecting frame. The first resetting member is used to drive the first connecting frame upward so that the first connecting frame can be reset after being pressed down by the press.

[0005] The pressing mechanism further includes a support frame that can be moved up and down relative to the main frame, and a second driving member for driving the support frame to move up and down. The support frame includes a support portion located below the second connecting frame for supporting the second connecting frame. The support frame has a first position where the support portion does not contact the second connecting frame, and a second position where the support portion contacts the second connecting frame after moving upward from the first position.

[0006] The loading assembly further includes a second stop connected to the connecting seat and located below the second connecting frame. The second stop restricts the downward movement of the second connecting frame. The second connecting frame is slidably connected to the connecting seat in the vertical direction. When the support frame moves upward, it can drive the second connecting frame to move upward.

[0007] As a further improvement of the present invention, the first reset member is an elastic member that elastically stretches and contracts in the vertical direction, and the loading assembly further includes a first stop member connected to the connecting seat and located above the first connecting frame, the first stop member being used to restrict the first connecting frame from moving upward.

[0008] As a further improvement of the present invention, the loading assembly further includes a second reset member disposed between the connecting seat and the second connecting frame. The second reset member is used to drive the second connecting frame downward so that the second connecting frame can be reset after being moved upward by the support frame.

[0009] As a further improvement of the present invention, the pressing mechanism further includes a sliding seat slidably connected to the main frame in the vertical direction, the press is connected to the sliding seat, and the support frame further includes a connecting part extending upward from the support portion and fixedly connected to the sliding seat.

[0010] As a further improvement of the present invention, the pressing device further includes a fall protection mechanism, which includes a first support seat located below the support frame, a connecting plate connected to the upper side of the first support seat, a slider slidably connected to the connecting plate in a horizontal direction, and a third driving member for driving the slider to slide. The slider includes a third position located between the support frame and the first support seat when the support frame is in the second position, and a fourth position not located between the support frame and the first support seat when the support frame is in the first position.

[0011] As a further improvement of the present invention, the pressing device further includes a second support seat disposed below the support frame, a buffer member and a limiting member connected to the upper side of the second support seat, wherein the buffer member is disposed beyond the limiting member in the vertical direction, and when the support frame is in the first position, it abuts against the limiting member in the vertical direction.

[0012] As a further improvement of the present invention, the plurality of loading components include at least two different upper pressure heads and / or at least two different lower pressure heads.

[0013] As a further improvement of the present invention, the pressing device includes a first detection component for identifying the loading assembly. The first detection component includes a plurality of first detection elements fixedly disposed on one side of the pressing mechanism relative to the main frame, a plurality of first detection positions corresponding to the plurality of first detection elements, and a plurality of feature block groups connected to the turntable and respectively located on one side of the plurality of loading assemblies. Each feature block group includes at least one feature block that can rotate with the turntable to the first detection position, and the correspondence between the feature blocks in at least two different feature block groups and the plurality of first detection elements is different.

[0014] The present invention also provides a method for pressing subframe bushings, wherein the subframe has multiple locations where bushings need to be installed, and the method for pressing subframe bushings uses the above-mentioned pressing device and includes the following steps:

[0015] S1. Install the bushing onto the lower pressure head of a loading assembly and position the loading assembly in a position corresponding to the pressing mechanism;

[0016] S2. Use a robot to move the subframe and move the position on the subframe where the bushing needs to be installed to between the upper and lower pressure heads on the loading component corresponding to the pressing mechanism. Then, the press drives the upper pressure head to press down and press the bushing onto the subframe.

[0017] S3. Rotate the turntable to move another loading component to the position corresponding to the pressing mechanism. Then, use the robot to move the sub-frame and move another position on the sub-frame where the bushing needs to be installed to between the upper and lower pressing heads on the loading component corresponding to the pressing mechanism. After that, the press drives the lower pressing head to press down and press the bushing onto the sub-frame.

[0018] S4. Repeat step S3 above multiple times;

[0019] S5. During steps S2-S4, the bushing is installed in parallel on the loading assembly that does not correspond to the pressing mechanism.

[0020] The beneficial effects of this invention are:

[0021] The pressing device and subframe bushing pressing method provided by the present invention can automatically press the bushing onto the subframe, and the pressing and feeding of the bushing can be carried out simultaneously, which reduces the time required for pressing multiple bushings and improves production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pressing device provided in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A side view of the pressing device after some parts have been removed;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the loading component;

[0025] Figure 4 for Figure 2 A magnified view of the lower half;

[0026] Figure 5 for Figure 1 A magnified diagram of point A in the middle;

[0027] Figure 6 This is a top view of the turntable, loading assembly, and feature block group in a pressing device according to an embodiment of the present invention.

[0028] Figure 7 This is a front view of the turntable and the first detection component in a pressing device provided according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the loading component and the second detection component in a pressing device provided according to an embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0031] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0032] Subframes used in automobiles require bushings to be press-fitted at multiple locations during production, such as... Figure 1-4 As shown, one embodiment of the present invention provides a pressing device 100, which is suitable for automatically pressing bushings onto a subframe.

[0033] The pressing device 100 includes a main frame 10, a turntable 20 rotatably connected to the main frame 10, a first driving member 21 for driving the turntable 20 to rotate, a plurality of loading components 30 distributed on the turntable 20 along the circumferential direction, and a pressing mechanism 40 corresponding to one side of a loading component 30. The plurality of loading components 30 are evenly distributed on the turntable 20. The first driving member 21 is specifically an indexing driving mechanism, which can drive the turntable 20 to rotate by a fixed angle each time. Multiple rotations of the turntable 20 can cause the plurality of loading components 30 to rotate sequentially to the pressing mechanism 40.

[0034] The loading assembly 30 includes a connecting seat 31 connected to the turntable 20, an upper pressure head 32 and a lower pressure head 33 arranged opposite each other in the vertical direction, a first connecting frame 34 connecting the upper pressure head 32 and the connecting seat 31, and a second connecting frame 35 connecting the lower pressure head 33 and the connecting seat 31, wherein the upper pressure head 32 is located above the lower pressure head 33; the first connecting frame 34 is slidably connected to the connecting seat 31 in the vertical direction. The pressing mechanism 40 includes a press 41 located above the first connecting frame 34, and the press 41 is used to press down the first connecting frame 34. When it is necessary to press the bushing onto the subframe, the bushing is first installed on the upper pressure head 32 or the lower pressure head 33, and the position on the subframe where the bushing needs to be pressed is located between the upper pressure head 32 and the lower pressure head 33. The press 41 presses down the first connecting frame 34, which can cause the upper pressure head 32 to move down and press the bushing onto the subframe. As can be imagined, when the bushing is installed on the upper pressure head 32, the upper pressure head 32 directly drives the bushing to press the bushing onto the subframe. When the bushing is installed on the lower pressure head 33, the upper pressure head 32 presses down on the subframe, so that the bushing is pressed onto the subframe.

[0035] While the pressing mechanism 40 presses the bushings on the corresponding loading components 30 onto the subframe, the bushings can also be installed on the upper pressing head 32 or lower pressing head 33 of other loading components 30 by a robot or manually. In this way, the pressing and feeding of bushings can be carried out simultaneously. As the turntable 20 rotates, multiple loading components 30 loaded with bushings can rotate sequentially to the pressing mechanism 40, so that the pressing mechanism 40 can continuously press the bushings onto the subframe.

[0036] The loading assembly 30 also includes a first reset member 36 disposed between the connecting seat 31 and the first connecting frame 34. The first reset member 36 is used to drive the first connecting frame 34 upward. The press 41 includes a pressure column 411 and a press body 412 for driving the pressure column 411 to move up and down. When pressing the bushing, the pressure column 411 moves down, contacts and presses down the first connecting frame 34, so as to drive the upper pressure head 32 to move down. After the bushing is pressed, the pressure column 411 moves up and separates from the first connecting frame 34. The first reset member 36 drives the first connecting frame 34 upward, so that the first connecting frame 34 can be reset upward, so that the press 41 can press down the first connecting frame 34 again.

[0037] In this embodiment, the first reset member 36 is an elastic member that stretches elastically in the vertical direction, and has the tendency to move the first connecting frame 34 upward relative to the connecting seat 31. Thus, the first connecting frame 34 can automatically reset upward after being pressed down. The loading assembly 30 also includes a first stop member 37 connected to the connecting seat 31 and located above the first connecting frame 34. The first stop member 37 is used to restrict the upward movement of the first connecting frame 34. During the upward movement driven by the first reset member 36, the first connecting frame 34 can no longer move upward after abutting against the first stop member 37. The first reset member 36 can hold the first connecting frame 34 in a preset position abutting against the first stop member 37, thus facilitating the robot to install the bushing on the upper pressure head 32.

[0038] During bushing pressing, the pressure output by the press 41 can reach several tons. To address this, the pressing mechanism 40 also includes a support frame 42 that is vertically movable relative to the main frame 10, and a second driving member 43 for driving the support frame 42 vertically. The support frame 42 includes a support portion 421 located below the second connecting frame 35 to support the second connecting frame 35. The support frame 42 has a first position where the support portion 421 is not in contact with the second connecting frame 35, and a second position where the support portion 421 contacts the second connecting frame 35 after moving upward from the first position. Before bushing pressing, the second driving member 43 drives the support frame 42 upward, moving it from the first position to the second position. When the support frame 42 is in the second position, the support portion 421 contacts the second connecting frame 35 to support it. Under the support of the support portion 421, the second connecting frame 35 can withstand significant pressure. After the bushing is pressed in, the support frame 42 moves from the second position to the first position under the drive of the second drive member 43. When the support frame 42 is in the first position, the support part 421 does not contact the second connecting frame 35, and there is a gap between them so that when the turntable 20 rotates, the second connecting frame 35 will not interfere with the support part 421.

[0039] Furthermore, the second connecting frame 35 is slidably connected to the connecting seat 31 in the vertical direction. When the support frame 42 moves upward, it can drive the second connecting frame 35 to move upward. In this way, the support part 421 can directly and effectively support the second connecting frame 35, and the bushing connected to the lower pressing head 33 can be partially guided into the position on the subframe for bushing installation before pressing, so as to facilitate the subsequent pressing of the bushing.

[0040] The loading assembly 30 also includes a second stop 39 connected to the connecting seat 31 and located below the second connecting frame 35. The second stop 39 is used to restrict the downward movement of the second connecting frame 35. When the second connecting frame 35 abuts against the second stop 39, it can no longer move downward.

[0041] Normally, after the second connecting frame 35 is moved upward by the support frame 42, it can automatically move downward and reset under the action of gravity. However, in order to prevent the second connecting frame 35 from failing to automatically reset under the action of gravity due to the large friction between the second connecting frame 35 and the connecting seat 31, the loading assembly 30 also includes a second reset member 38 disposed between the connecting seat 31 and the second connecting frame 35. The second reset member 38 is used to drive the second connecting frame 35 downward so that the second connecting frame 35 can reset after being moved upward by the support frame 42.

[0042] Furthermore, the second reset member 38 is an elastic member extending in the vertical direction, which has the tendency to move the second connecting frame 35 downward relative to the connecting seat 31. In this way, it can be ensured that the second connecting frame 35 can automatically move down to reset after being lifted by the support frame 42, and the second connecting frame 35 can also be kept in a preset position abutting against the second stop member 39. In this way, the robot can install the bushing on the lower pressure head 33.

[0043] In this embodiment, both the first reset member 36 and the second reset member 38 are nitrogen springs. The upper end of the first reset member 36 is connected to the first connecting frame 34, and the lower end is connected to the connecting seat 31. The upper end of the second reset member 38 is connected to the connecting seat 31, and the lower end is connected to the second connecting frame 35. In other embodiments, the first reset member 36 and the second reset member 38 may also be elastic components such as helical compression springs.

[0044] In other embodiments, the first reset member 36 and the second reset member 38 may also be driving members such as cylinders, so as to drive the first connecting frame 34 to move upward and the second connecting frame 35 to move downward, respectively.

[0045] In this embodiment, the pressing mechanism 40 further includes a sliding seat 44 slidably connected to the main frame 10 in the vertical direction, a press 41 connected to the sliding seat 44, and a connecting part 422 extending upward from the support part 421 and fixedly connected to the sliding seat 44. Thus, the press 41, the sliding seat 44, and the support frame 42 are connected as a whole and moved up and down together by the second driving member 43. During bushing pressing, the downward pressure output by the press 41 cancels out the upward supporting force of the support part 421 on the second connecting frame 35. Therefore, the pressure of the press 41 is mainly borne by the support frame 42, preventing damage to the main frame 10 and other structures due to stress.

[0046] As described above, the press 41, sliding seat 44, and support frame 42 are driven up and down as a whole by the second driving member 43. To prevent the press 41, sliding seat 44, and support frame 42 from falling due to the failure of the second driving member 43, the pressing device 100 also includes a fall protection mechanism 50. The fall protection mechanism 50 includes a first support seat 51 located below the support frame 42, a connecting plate 52 connected to the upper side of the first support seat 51, a slider 53 slidably connected to the connecting plate 52 in the horizontal direction, and a third driving member 54 for driving the slider 53 to slide. The slider 53 includes a third position located between the support frame 42 and the first support seat 51 when the support frame 42 is in the second position, and a fourth position not located between the support frame 42 and the first support seat 51 when the support frame 42 is in the first position.

[0047] When the support frame 42 is in the second position, the slider 53 can extend between the support frame 42 and the first support seat 51. If the press 41, the sliding seat 44, and the support frame 42 fall, the slider 53 will limit the falling distance of the support frame 42. The smaller the gap between the slider 53 and the support frame 42, the smaller the falling distance of the support frame 42. The press 41, the sliding seat 44, and the support frame 42 can be supported by the slider 53 in time after falling. After the slider 53 moves from the third position to the fourth position, the support frame 42 can be driven downward by the second driving member 43.

[0048] The pressing device 100 also includes a second support seat 60 located below the support frame 42, a buffer member 61 connected to the upper side of the second support seat 60, and a limiting member 62. The buffer member 61 extends beyond the limiting member 62 in the vertical direction. When the support frame 42 is in the first position, it abuts against the limiting member 62 in the vertical direction. The buffer member 61 prevents the support frame 42 from directly contacting the second support seat 60 when the support frame 42 moves from the second position to the first position, and alleviates the impact force of the support frame 42 on the second support seat 60. When the support frame 42 moves downward, it can no longer move downward after contacting the limiting member 62, thus preventing the support frame 42 from damaging the buffer member 61.

[0049] In this embodiment, a buffer 61 is also connected to the upper side of the first support seat 51, so as to further buffer the support frame 42.

[0050] The subframe has multiple locations where bushings need to be installed. The bushings installed in different locations will have different structures. In this embodiment, the multiple loading components include at least two different upper pressure heads 32 and / or at least two different lower pressure heads 33. The upper pressure heads 32 and lower pressure heads 33 with different structures are adapted to bushings with different structures. In this way, the multiple loading components 30 can load bushings with different structures, and the pressing device 100 can press bushings with different structures onto the subframe.

[0051] To distinguish between multiple loading components 30, station numbers 1-N can be assigned sequentially according to the circumferential direction of the turntable 20. When pressing bushes of different structures, the press 41 uses different pressing data. Therefore, before pressing, the press 41 needs to determine the station number of the loading component 30 so that the corresponding pressing data can be matched with it.

[0052] Continue to combine Figure 5-8 As shown, the pressing device 100 further includes a first detection component for identifying the loading assembly 30. The first detection component includes multiple first detection elements 71 fixedly disposed on one side of the pressing mechanism 40 relative to the main frame 10, multiple first detection positions corresponding to the multiple first detection elements 71, and multiple feature block groups 72 connected to the turntable 20 and respectively located on one side of the multiple loading assemblies 30. That is, each loading assembly 30 corresponds to a feature block group 72, and each feature block group 72 includes at least one feature block 721 that can rotate with the turntable 20 to the first detection position. The correspondence between the feature block 721 in at least two different feature block groups 72 and the multiple first detection elements 71 is different. By detecting whether there is a feature block 721 in the first detection position corresponding to the multiple first detection elements 71, the station number of the loading assembly 30 corresponding to the pressing mechanism 40 during bushing pressing can be determined.

[0053] Combination Figure 7 As shown, the following explanation will use the example of four first detection elements 71 to illustrate the point that "the correspondence between feature blocks 721 in at least two different feature block groups 72 and multiple first detection elements 71 is different". For ease of explanation, the four first detection elements 71 are represented by the codes a, b, c, and d. If the number of feature blocks 721 in two feature block groups 72 is the same, for example, two in each group, but the two feature blocks 721 in one group are located at the first detection positions corresponding to a and b, respectively, and the feature blocks 721 in the other group are located at the first detection positions corresponding to c and d, then it can be considered that the correspondence between feature blocks 721 in the two different feature groups and multiple first detection elements 71 is different. It can be imagined that in the example of four first detection elements 71 and two feature blocks 721 in feature block groups 72, six correspondences can be combined, and the four first detection elements 71 can identify up to six workstation numbers of loading components 30. Of course, the number of feature blocks 721 in the first detection element 71 and the feature block group 72 is not limited to this. For example, the first detection element 71 can be set to four or more, and the feature blocks 721 in the feature block group 72 can be set to three or more.

[0054] Furthermore, it can be inferred that if the number of feature blocks 721 in two different feature block groups 72 is different, then the correspondence between the feature blocks 721 in the two different feature groups and the multiple first detection elements 71 must be different.

[0055] In this embodiment, the loading assembly 30 is detachably connected to the turntable 20. There are at least two sets of loading assemblies 30, and each set of loading assemblies 30 includes a certain number of loading assemblies 30. When pressing bushings onto different models of subframes, different sets of loading assemblies 30 are selected respectively. To prevent the mixing of loading components 30 belonging to different sets, the pressing device 100 also includes a second detection component. The second detection component includes a plurality of second detection elements 81 fixedly disposed on one side of the pressing mechanism 40 relative to the main frame 10, a plurality of second detection positions corresponding to the plurality of second detection elements 81, and an identification block 82 connected to the connecting seat 31 of the loading component 30. The identification block 82 includes at least one identification strip 821 that can rotate with the turntable 20 to the second detection position. The identification blocks 82 on the same set of loading components 30 have the same structure, while the identification blocks 82 on the connecting seat 31 of loading components 30 that do not belong to the same set have different structures. Thus, the correspondence between the identification strip 821 on the identification block 82 of the loading components 30 belonging to different sets and the second detection elements 81 is different. By detecting whether there is an identification strip 821 in the second detection position corresponding to the plurality of second detection elements 81, it can be determined whether the loading component 30 is selected correctly.

[0056] The principle of how to combine the identification strips 821 on different identification blocks 82 and multiple second detection elements 81 to form different correspondences can be referred to the combination method of the first detection element 71 and the feature block 721 described above, and will not be repeated here. In this embodiment, the number of second detection elements 81 is preferably three, and the number of identification strips 821 on each identification block 82 is preferably two. The first detection element 71 and the second detection element 81 are preferably proximity sensors.

[0057] The pressing device 100 also includes multiple photoelectric sensors fixedly mounted on one side of the pressing mechanism 40 relative to the main frame 10. The photoelectric sensors can emit light to illuminate the object being tested, and then determine the position of the object being tested based on whether they receive reflected light from the object.

[0058] Among the multiple photoelectric sensors, there is a first photoelectric sensor 91 for detecting whether the first connecting frame 34 is in a preset position abutting against the first stop 37, and a second photoelectric sensor 92 for detecting whether the second connecting frame 35 is in a preset position abutting against the second stop 39. Specifically, a first reflector 911 corresponding to the first photoelectric sensor 91 is connected to the first connecting frame 34, and the first reflector 911 is used to reflect the light emitted by the first photoelectric sensor 91 back to the first photoelectric sensor 91; a second reflector 921 corresponding to the second photoelectric sensor 92 is connected to the second connecting frame 35, and the second reflector 921 is used to reflect the light emitted by the second photoelectric sensor 92 back to the second photoelectric sensor 92.

[0059] In some cases, when the upper pressure head 32 is connected to the first connecting frame 34, it cannot rotate around its own axis, and the upper pressure head 32 must be connected to the first connecting frame 34 at a preset installation angle. Similarly, when the lower pressure head 33 is connected to the second connecting frame 35, it cannot rotate around its own axis, and the lower pressure head 33 must be connected to the second connecting frame 35 at a preset installation angle. Among the multiple photoelectric sensors, a third photoelectric sensor 93 is used to detect whether the upper pressure head 32 is located at a preset installation angle, and a fourth photoelectric sensor 94 is used to detect whether the lower pressure head 33 is located at a preset installation angle. The upper pressure head 32 has a first through hole 321 through which the light emitted by the third photoelectric sensor 93 passes. A first reflector plate connected to the upper pressure head 32 is provided on the side of the first through hole 321 facing away from the third photoelectric sensor 93. If the light emitted by the third photoelectric sensor 93 can pass through the first through hole 321 and be reflected back to the third photoelectric sensor 93 by the first reflector plate, it can be determined that the upper pressure head 32 is at the correct installation angle. Similarly, a second through hole is provided on the pressing head 33 for the light emitted by the fourth photoelectric sensor 94 to pass through, and a second reflector plate connected to the pressing head 33 is provided on the side of the second through hole away from the third photoelectric sensor 93.

[0060] The multiple photoelectric sensors also include a fifth photoelectric sensor 95 for detecting whether the bushing is installed on the upper pressure head 32 or the lower pressure head 33.

[0061] By setting up the above-mentioned multiple photoelectric sensors, the pressing device 100 can grasp the situation on the loading component 30 before the press 41 presses down, so as to determine whether the press 41 can press down.

[0062] The present invention also provides a method for pressing a subframe bushing, the method using the above-described pressing device 100 and comprising the following steps:

[0063] S1. Install the bushing onto the upper pressure head 32 or lower pressure head 33 of a loading assembly 30, and position the loading assembly 30 in a position corresponding to the pressing mechanism 40.

[0064] S2. Use a robot to move the subframe and move the position on the subframe where the bushing needs to be installed to between the upper pressure head 32 and the lower pressure head 33 on the loading component 30 corresponding to the pressing mechanism 40. Then, the press 41 drives the upper pressure head 32 to press down and press the bushing onto the subframe.

[0065] S3. Rotate turntable 20 to move another loading component 30 to the position corresponding to the pressing mechanism 40. Then, use a robot to move the sub-frame and move another position on the sub-frame where the bushing needs to be installed to between the upper pressing head 32 and the lower pressing head 33 on the loading component 30 corresponding to the pressing mechanism 40. Then, press 41 drives the lower pressing head 33 to press down and press the bushing onto the sub-frame.

[0066] In steps S2 and S3, before the press head 32 is driven down by the press 41, the second drive member 43 drives the support frame 42, moving the support frame 42 from the first position to the second position, and the support frame 42 drives the second connecting frame 35 to move up. After the bushing is pressed onto the subframe, the second drive member 43 drives the support frame to move down to the first position.

[0067] S4. Repeat step S3 above multiple times so that the pressing device 100 can continuously press the bushing onto the subframe.

[0068] S5. During steps S2-S4, the bushings are installed in parallel on the loading assembly 30, which is not corresponding to the pressing mechanism 40. In this way, the pressing and feeding of the bushings can be carried out simultaneously, which reduces the time required to press multiple bushings and improves production efficiency.

[0069] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0070] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A press fitting device characterized by comprising: The device includes a main frame, a turntable rotatably connected to the main frame, a first driving member for driving the turntable to rotate, a plurality of loading components distributed on the turntable along the circumferential direction of the turntable, and a pressing mechanism corresponding to one side of a loading component. The loading component includes a connecting seat connected to the turntable, an upper pressing head and a lower pressing head arranged opposite each other in the vertical direction, a first connecting frame connecting the upper pressing head and the connecting seat, and a second connecting frame connecting the lower pressing head and the connecting seat. The first connecting frame is slidably connected to the connecting seat in the vertical direction. The pressing mechanism includes a press located above the first connecting frame for pressing down the first connecting frame. The loading component also includes a first reset member located between the connecting seat and the first connecting frame. The first reset member is used to drive the first connecting frame upward so that the first connecting frame can be reset after being pressed down by the press. The pressing mechanism further includes a support frame that can be moved up and down relative to the main frame, and a second driving member for driving the support frame to move up and down. The support frame includes a support portion located below the second connecting frame for supporting the second connecting frame. The support frame has a first position where the support portion does not contact the second connecting frame, and a second position where the support portion contacts the second connecting frame after moving upward from the first position. The loading assembly further includes a second stop connected to the connecting seat and located below the second connecting frame. The second stop restricts the downward movement of the second connecting frame. The second connecting frame is slidably connected to the connecting seat in the vertical direction. When the support frame moves upward, it can drive the second connecting frame to move upward.

2. The press device of claim 1, wherein The first reset member is an elastic member that can elastically extend and retract in the vertical direction. The loading assembly also includes a first stop member connected to the connecting seat and located above the first connecting frame. The first stop member is used to restrict the first connecting frame from moving upward.

3. The press device of claim 1, wherein, The loading assembly further includes a second reset member disposed between the connecting seat and the second connecting frame. The second reset member is used to drive the second connecting frame downward so that the second connecting frame can be reset after being moved upward by the support frame.

4. The press device of claim 1, wherein The pressing mechanism further includes a sliding seat that is slidably connected to the main frame in the vertical direction, the press is connected to the sliding seat, and the support frame further includes a connecting part that extends upward from the support part and is fixedly connected to the sliding seat.

5. The press device of claim 1, wherein, The pressing device further includes a fall protection mechanism, which includes a first support seat located below the support frame, a connecting plate connected to the upper side of the first support seat, a slider slidably connected to the connecting plate in a horizontal direction, and a third driving member for driving the slider to slide. The slider includes a third position when the support frame is in the second position, located between the support frame and the first support seat, and a fourth position when the support frame is in the first position, not located between the support frame and the first support seat.

6. The pressing device according to claim 1, characterized in that, The pressing device further includes a second support seat located below the support frame, a buffer member connected to the upper side of the second support seat, and a limiting member. The buffer member extends beyond the limiting member in the vertical direction. When the support frame is in the first position, it abuts against the limiting member in the vertical direction.

7. The pressing device according to claim 1, characterized in that, The plurality of loading components include at least two different types of upper pressure heads and / or at least two different types of lower pressure heads.

8. The pressing device according to claim 7, characterized in that, The pressing device further includes a first detection component for identifying the loading assembly. The first detection component includes a plurality of first detection elements fixedly disposed on one side of the pressing mechanism relative to the main frame, a plurality of first detection positions corresponding to the plurality of first detection elements, and a plurality of feature block groups connected to the turntable and respectively located on one side of the plurality of loading assemblies. Each feature block group includes at least one feature block that can rotate with the turntable to the first detection position. The correspondence between the feature blocks in at least two different feature block groups and the plurality of first detection elements is different.

9. A method for pressing subframe bushings, wherein the subframe has multiple locations where bushings need to be installed, characterized in that, The subframe bushing pressing method uses the pressing device described in any one of claims 1-8 and includes the following steps: S1. Install the bushing onto the lower pressure head of a loading assembly and position the loading assembly in a position corresponding to the pressing mechanism; S2. Use a robot to move the subframe and move the position on the subframe where the bushing needs to be installed to between the upper and lower pressure heads on the loading component corresponding to the pressing mechanism. Then, the press drives the upper pressure head to press down and press the bushing onto the subframe. S3. Rotate the turntable to move another loading component to the position corresponding to the pressing mechanism. Then, use the robot to move the sub-frame and move another position on the sub-frame where the bushing needs to be installed to between the upper and lower pressing heads on the loading component corresponding to the pressing mechanism. Then, the press drives the lower pressing head to press down and press the bushing onto the sub-frame. S4. Repeat step S3 above multiple times; S5. During steps S2-S4, the bushing is installed in parallel on the loading assembly that does not correspond to the pressing mechanism.

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