Floating connecting mechanism

Abstract

The invention provides a floating connection mechanism, which relates to the technical field of connection structures, and comprises a linear motor, a first floating connection assembly, a second floating connection assembly, a third floating connection assembly and a mounting head, the other end of the first floating connection assembly is movably connected with one end of the second floating connection assembly, the other end of the second floating connection assembly is movably connected with one end of the third floating connection assembly, and the other end of the third floating connection assembly is rotatably connected with the mounting head; therefore, the connection rigidity of the mounting head and the linear motor is reduced, and the normal work of the mounting head is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of connection structures, and in particular to a floating connection mechanism. Background Art

[0002] The existing connection between the placement head and the linear motor is usually a rigid connection. In order to realize the vertical reciprocating motion of the placement head, it is necessary to ensure that the motor and the placement head are installed in parallel, and the placement head needs to be slidably connected with the external structure to maintain a smooth sliding process. This puts high demands on the processing accuracy and debugging requirements of each connecting component. For 10 identical placement heads, using the same motor parameters for driving may lead to differences in driving effects (such as unsmooth reciprocating sliding) due to differences in processing accuracy and installation and debugging. Even after the linear motor and the placement head are locked, the parallelism is not high enough, resulting in excessive friction, resulting in the inability to drive the undebugged placement head. In this case, the performance of the motor can only be sacrificed as a compromise to ensure the normal operation of each placement head.

[0003] Therefore, it is necessary to propose a floating connection mechanism to reduce the connection rigidity between the placement head and the linear motor, thereby ensuring the normal operation of the placement head. Summary of the invention

[0004] In order to solve the above problem, the present invention proposes a floating connection mechanism to reduce the connection rigidity between the placement head and the linear motor, thereby ensuring the normal operation of the placement head.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention proposes a floating connection mechanism, including a linear motor, a first floating connection component, a second floating connection component, a third floating connection component, and a mounting head. The pushing end of the linear motor is fixedly connected to one end of the first floating connection component, the other end of the first floating connection component is movably connected to one end of the second floating connection component, the other end of the second floating connection component is movably connected to one end of the third floating connection component, and the other end of the third floating connection component is rotatably connected to the mounting head.

[0007] Furthermore, the other end of the first floating connection component forms a rotational connection with one end of the second floating connection component in a first plane, the other end of the second floating connection component forms a rotational connection with one end of the third floating connection component in a second plane, and the other end of the third floating connection component forms a rotational connection with the placement head in a third plane.

[0008] Furthermore, the first floating connection assembly includes a first connecting member, a first bearing group, and a first locking member. One end of the first connecting member is fixedly connected to the pushing end, and the other end of the first connecting member is longitudinally provided with a mounting protrusion. The first bearing group is embedded in the mounting protrusion. The first locking member passes through the first bearing group and is fixedly connected to the inner ring of the first bearing group. One end of the first locking member is fixedly connected to one end of the second floating connection assembly, so that the second floating connection assembly relies on the first bearing group to form a rotational connection on the first plane.

[0009] Furthermore, the first bearing group includes at least two bearings and a limit ring, at least two of the bearings and the limit rings are coaxially arranged in sequence, at least two of the bearings are transversely embedded in the mounting protrusion, the limit ring is located between the mounting protrusion and the second floating connection assembly, the first locking member passes through the two bearings and the limit rings in sequence, and the first locking member is fixedly connected to the inner ring of the bearing.

[0010] Furthermore, the mounting protrusion is provided with a first embedding groove, and at least two of the bearings are embedded in the first embedding groove.

[0011] Furthermore, the second floating connection component includes a second connecting member, a second bearing group, and a second locking member. A connecting plate is provided at one end of the second connecting member, and the connecting plate forms a rotational connection with one end of the first floating connection component in a first plane. The second bearing group is longitudinally embedded in the other end of the second connecting member. The second locking member passes through the second bearing group and is fixedly connected to the inner ring of the second bearing group. One end of the second locking member is fixedly connected to one end of the third floating connection component, so that the third floating connection component relies on the second bearing group to form a rotational connection in a second plane.

[0012] Furthermore, the third floating connection component includes a third connecting member, a third bearing group, a sealing ring, and a cover plate member. One end of the third connecting member forms a rotational connection with the other end of the second floating connection component in a second plane. The third bearing group and the sealing ring are coaxially arranged and are both embedded in the third connecting member and are covered and fixed by the cover plate member. One end of the mounting head passes through the third bearing group and is fixedly connected to the inner ring of the third bearing group through a locking nut. The sealing ring is sleeved on one end of the mounting head and seals the periphery of one end of the mounting head, so that the mounting head relies on the third bearing group to form a rotational connection in the third plane. The mounting head passes through the cover plate member.

[0013] Furthermore, the third connecting member is laterally provided with an installation groove, the third bearing group and the sealing ring are both embedded in the installation groove, the outer peripheral side of the sealing ring is tightly attached to the groove wall of the installation groove, and the installation groove is connected to the rear end of the third connecting member.

[0014] Furthermore, the sealing ring is provided with an elastic abutment, which is in an annular structure. The elastic abutment includes a first sealing ring, an annular avoidance groove, and a second sealing ring. The first sealing ring is located on the outer peripheral side of the annular avoidance groove and is tightly attached to the groove wall of the mounting groove. The second sealing ring is located on the inner peripheral side of the annular avoidance groove and is tightly attached to the outer side wall of one end of the mounting head.

[0015] Furthermore, the third floating connection assembly also includes a ventilation connection block, which is fixedly connected to the rear end of the third connection member and communicated with the installation groove.

[0016] Beneficial effects of the present invention:

[0017] The present invention adopts a first floating connection component, a second floating connection component, and a third floating connection component as the connection structure between the linear motor and the placement head. Since the second floating connection component forms an active connection with the first floating connection component and the third floating connection component respectively, and the third floating connection component forms an active connection with the placement head, while ensuring a stable connection, the connection rigidity of the placement head can also be reduced. Even if there is an angle deviation between the installation of the linear motor and the placement head, or the processing accuracy of the connecting part is insufficient, or the installation position is not good, the floating connection between the linear motor and the placement head can be achieved, ensuring that the placement head can slide smoothly under the connection cooperation of the three floating connection components; in summary, the connection rigidity between the placement head and the linear motor is reduced, thereby ensuring the normal operation of the placement head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the floating connection mechanism of the present invention;

[0019] Figure 2 An exploded view of the floating connection mechanism of the present invention;

[0020] Figure 3 is a cross-sectional view of the floating connection mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the sealing ring of the floating connection mechanism of the present invention.

[0022] The reference numerals are as follows:

[0023] Linear motor 1, driving end 11;

[0024] A first floating connection assembly 2, a first connection member 21, a mounting protrusion 211, a first embedding groove 2111, a first bearing assembly 22, a bearing 221, a limiting ring 222, and a first locking member 23;

[0025] A second floating connection assembly 3, a second connection member 31, a connection plate 311, and a second locking member 33;

[0026] A third floating connection assembly 4, a third connection member 41, a mounting groove 411, a third bearing assembly 42, a sealing ring 43, an elastic abutment portion 431, a first sealing ring 4311, an annular avoidance groove 4312, a second sealing ring 4313, a cover member 44, a locking nut 45, and a ventilation connection block 46;

[0027] Placement head 5. DETAILED DESCRIPTION

[0028] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0029] Please refer to Figure 1-Figure 4 The present invention proposes a floating connection mechanism, including a linear motor 1, a first floating connection component 2, a second floating connection component 3, a third floating connection component 4, and a mounting head 5. When the linear motor 1 is in operation, it performs a reciprocating motion of extending and retracting through a pushing end 11. The pushing end 11 of the linear motor 1 is fixedly connected to one end of the first floating connection component 2, the other end of the first floating connection component 2 is movably connected to one end of the second floating connection component 3, the other end of the second floating connection component 3 is movably connected to one end of the third floating connection component 4, the other end of the third floating connection component 4 is rotatably connected to the mounting head 5, and the mounting head 5 is rod-shaped and is used to mount components to be processed.

[0030] In this embodiment, the first floating connection component 2, the second floating connection component 3, and the third floating connection component 4 are used as the connection structure between the linear motor 1 and the mounting head 5. Since the second floating connection component 3 forms an active connection with the first floating connection component 2 and the third floating connection component 4 respectively, and the third floating connection component 4 forms an active connection with the mounting head 5, while ensuring the connection is stable, the connection rigidity of the mounting head 5 can also be reduced. Even if there is a deviation angle between the installation of the linear motor 1 and the mounting head 5, or the processing accuracy of the connecting part is not enough, or the installation position is not good, the floating connection between the linear motor 1 and the mounting head 5 can be achieved, so that the linear motor 1 can drive the mounting head 5 to slide smoothly through the connection cooperation of the three floating connection components.

[0031] In summary, the connection rigidity between the placement head and the linear motor is reduced to ensure the normal operation of the placement head.

[0032] In this embodiment, the other end of the first floating connection component 2 forms a rotational connection with one end of the second floating connection component 3 in the first plane, the other end of the second floating connection component 2 forms a rotational connection with one end of the third floating connection component 3 in the second plane, and the other end of the third floating connection component 4 forms a rotational connection with the mounting head 5 in the third plane; the first plane is the X-axis plane, the second plane is the Y-axis plane, and the third plane is the Z-axis plane. Having degrees of freedom in all three planes enables the mounting head 5 to have enough degrees of freedom to compensate for the deviation angle between the installation of the linear motor 1 and the mounting head 5, thereby enabling the mounting head 5 to slide smoothly in a straight line.

[0033] In this embodiment, the first floating connection component 2 includes a first connection member 21, a first bearing group 22, and a first locking member 23. One end of the first connection member 21 is fixedly connected to the pushing end 11, and the other end of the first connection member 21 is longitudinally provided with a mounting protrusion 211. The first bearing group 22 is embedded in the mounting protrusion 211. The first locking member 23 penetrates the first bearing group 22 and is fixedly connected to the inner ring of the first bearing group 22. The first locking member 23 is a component with a thread at one end and a shaft in the middle. The shaft part is inserted into the first bearing group 22, and the threaded end is screwed into one end of the second floating connection component 3 for fixing. One end of the first locking member 23 is fixedly connected to one end of the second floating connection component 3, so that the second floating connection component 3 relies on the first The bearing group 22 forms a rotational connection in the first plane; during installation, it is necessary to first assemble the first connecting member 21 and the first bearing group 22, and fix one end of the first connecting member 21 to the pushing end 11 by bolts, and then embed the first bearing group 22 into the mounting protrusion 211, and then pass the first locking member 23 through the first bearing group 22 and twist it into one end of the second floating connection component 3 for fixed connection. At this time, the second floating connection component 3 will rely on the first bearing group 22 to form a rotational connection in the first plane, and the installation of the first floating connection component 2 is completed. The setting of the mounting protrusion 211 reserves a suitable rotation amplitude for the second floating connection component 3 to avoid the rotation amplitude of the second floating connection component 3 being too large, which is not conducive to the kinetic energy transmission of the linear motor 1.

[0034] In this embodiment, the first bearing group 22 includes at least two bearings 221 and a limiting ring 222. The at least two bearings 221 and the limiting ring 222 are arranged coaxially in sequence. The at least two bearings 221 are both laterally embedded in the mounting protrusion 211. The limiting ring 222 is located between the mounting protrusion 211 and the second floating connection component 3. The first locking member 23 passes through the two bearings 221 and the limiting ring 222 in sequence. The first locking member 23 is fixedly connected to the inner ring of the bearing 221. Since the second floating connection component 3, the third floating connection component 4, and the mounting head 5 have weight, the provision of at least two bearings 221 can provide sufficient rotation support force for the first locking member 23, so that the first locking member 23 will not deviate from the axis when rotating, thereby improving the connection accuracy. The limiting ring 222 is used to provide a spacing for the installation of the second floating connection component 3 to prevent the second floating connection component 3 from being too close to the mounting protrusion 211.

[0035] In this embodiment, a first embedding groove 2111 is provided on the mounting protrusion 211, and at least two bearings 221 are embedded in the first embedding groove 2111; the first embedding groove 2111 is used to provide an installation space for at least two bearings 221, and at least two bearings 221 are installed in the first embedding groove 2111 with an interference fit.

[0036] In this embodiment, the second floating connection component 3 includes a second connection member 31, a second bearing group 32, and a second locking member 33. A connection plate 311 is provided at one end of the second connection member 31. The connection plate 311 forms a rotation connection with one end of the first floating connection component 2 in a first plane. The second bearing group 32 is longitudinally embedded in the other end of the second connection member 31. The second locking member 33 penetrates the second bearing group 32 and is fixedly connected to the inner ring of the second bearing group 32. One end of the second locking member 33 is fixedly connected to one end of the third floating connection component 4, so that the third floating connection Component 4 relies on the second bearing group 32 to form a rotational connection in the second plane; during installation, it is necessary to first embed the second bearing group 32 into the second connecting member 31 for fixation, and then fix the connecting plate 311 on one end of the first locking member 23. At this time, the second connecting member 31 establishes a rotational connection in the first plane with the first floating connection component 2, and then the second locking member 33 passes through the second bearing group 32 and is twisted into the third floating connection component 4 for fixation. At this time, the third floating connection component 4 relies on the second bearing group 32 to form a rotational connection in the second plane.

[0037] In this embodiment, the third floating connection component 4 includes a third connection member 41, a third bearing group 42, a sealing ring 43, and a cover member 44. One end of the third connection member 41 forms a rotation connection with the other end of the second floating connection component 3 in the second plane. The third bearing group 42 and the sealing ring 43 are coaxially arranged and are both embedded in the third connection member 41 and are covered and fixed by the cover member 44. One end of the mounting head 5 passes through the third bearing group 42 and is fixedly connected to the inner ring of the third bearing group 42 through a locking nut 45. The sealing ring 43 is sleeved on one end of the mounting head 5 and seals the periphery of one end of the mounting head 5, so that the mounting head 5 relies on the third bearing group 42 to form a rotation connection. The mounting head 5 passes through the cover plate 44 to form a rotational connection on the third plane. When installing, the mounting head 5 needs to pass through the third bearing group 42 and the sealing ring 43 first, and then the third bearing group 42 and the sealing ring 43 are embedded in the third connecting member 41 and fixed through the cover plate 44. After the fixation is completed, the mounting head 5 relies on the third bearing group 42 to form a rotational connection on the third plane, and then one end of the third connecting member 41 is fixed to one end of the second locking member 33, that is, the rotational connection on the second plane formed by the third floating connection component 4 and the second floating connection component 3 is completed; the first bearing group 22 has the same structure as the second bearing group 32 and the third bearing group 42.

[0038] In this embodiment, the third connecting member 41 is laterally provided with a mounting groove 411, the third bearing group 42 and the sealing ring 43 are both embedded in the mounting groove 411, the outer peripheral side of the sealing ring 43 is in close contact with the groove wall of the mounting groove 411, and the mounting groove 411 is connected to the rear end of the third connecting member 41; the mounting groove 411 is used to provide a stable mounting structure for the third bearing group 42 and the sealing ring 43, and also provides a channel for the airflow to enter the mounting head 5.

[0039] In this embodiment, the sealing ring 43 is provided with an elastic abutment portion 431, which is an annular structure. The elastic abutment portion 431 includes a first sealing ring 4311, an annular avoidance groove 4312, and a second sealing ring 4313. The first sealing ring 4311 is an outward expansion structure. The first sealing ring 4311 is located on the outer peripheral side of the annular avoidance groove 4312 and is tightly attached to the groove wall of the mounting groove 411. The second sealing ring 4313 is located on the inner peripheral side of the annular avoidance groove 4312 and is tightly attached to the outer side wall of one end of the mounting head 5. The second sealing ring 4313 is an inwardly extending structure; when the sealing ring 43 is installed at one end of the mounting head 5, the second sealing ring 4313 will be squeezed by the outer wall of the mounting head 5, and then elastically deformed toward the annular avoidance groove 4312, thereby increasing the sealing performance of the mounting head 5; when the sealing ring 43 is installed in the mounting groove 411, the first sealing ring 4311 is squeezed by the groove wall of the mounting groove 411, and then elastically deformed toward the annular avoidance groove 4312, thereby increasing the sealing performance of the mounting groove 411.

[0040] In this embodiment, the third floating connection assembly 4 also includes a ventilation connection block 46, which is fixedly connected to the rear end of the third connection member 41 and communicates with the mounting groove 411; the ventilation connection block 46 is used to connect the air pipe at the rear end so that the air flow can flow into the mounting groove 411 and then enter the mounting head 5.

[0041] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A floating connection mechanism, It is characterized in that It includes a linear motor, a first floating connection component, a second floating connection component, a third floating connection component, and a mounting head. The pushing end of the linear motor is fixedly connected to one end of the first floating connection component, the other end of the first floating connection component is movably connected to one end of the second floating connection component, the other end of the second floating connection component is movably connected to one end of the third floating connection component, and the other end of the third floating connection component is rotatably connected to the mounting head.

2. The floating connection mechanism according to claim 1, It is characterized in that The other end of the first floating connection component forms a rotational connection with one end of the second floating connection component in a first plane, the other end of the second floating connection component forms a rotational connection with one end of the third floating connection component in a second plane, and the other end of the third floating connection component forms a rotational connection with the placement head in a third plane.

3. The floating connection mechanism according to claim 2, It is characterized in that The first floating connection component includes a first connecting member, a first bearing group, and a first locking member. One end of the first connecting member is fixedly connected to the pushing end, and the other end of the first connecting member is longitudinally provided with a mounting protrusion. The first bearing group is embedded in the mounting protrusion. The first locking member penetrates the first bearing group and is fixedly connected to the inner ring of the first bearing group. One end of the first locking member is fixedly connected to one end of the second floating connection component, so that the second floating connection component relies on the first bearing group to form a rotational connection on the first plane.

4. The floating connection mechanism according to claim 3, It is characterized in that The first bearing group includes at least two bearings and a limit ring. At least two of the bearings and the limit ring are coaxially arranged in sequence. At least two of the bearings are transversely embedded in the mounting protrusion. The limit ring is located between the mounting protrusion and the second floating connection component. The first locking member passes through the two bearings and the limit ring in sequence. The first locking member is fixedly connected to the inner ring of the bearing.

5. The floating connection mechanism according to claim 4, It is characterized in that The mounting protrusion is provided with a first embedding groove, and at least two of the bearings are embedded in the first embedding groove.

6. The floating connection mechanism according to claim 2, It is characterized in that The second floating connection component includes a second connecting member, a second bearing group, and a second locking member. A connecting plate is provided at one end of the second connecting member. The connecting plate and one end of the first floating connection component form a rotational connection in a first plane. The second bearing group is longitudinally embedded in the other end of the second connecting member. The second locking member penetrates the second bearing group and is fixedly connected to the inner ring of the second bearing group. One end of the second locking member is fixedly connected to one end of the third floating connection component, so that the third floating connection component relies on the second bearing group to form a rotational connection in a second plane.

7. The floating connection mechanism according to claim 2, It is characterized in that The third floating connection component includes a third connection member, a third bearing group, a sealing ring, and a cover plate member. One end of the third connection member forms a rotational connection with the other end of the second floating connection component in a second plane. The third bearing group and the sealing ring are coaxially arranged and are both embedded in the third connection member and are covered and fixed by the cover plate member. One end of the placement head passes through the third bearing group and is fixedly connected to the inner ring of the third bearing group through a locking nut. The sealing ring is sleeved on one end of the placement head and seals the periphery of one end of the placement head, so that the placement head relies on the third bearing group to form a rotational connection in the third plane. The placement head passes through the cover plate member.

8. The floating connection mechanism according to claim 7, It is characterized in that The third connecting member is laterally provided with an installation groove, the third bearing group and the sealing ring are both embedded in the installation groove, the outer peripheral side of the sealing ring is tightly attached to the groove wall of the installation groove, and the installation groove is connected to the rear end of the third connecting member.

9. The floating connection mechanism according to claim 8, It is characterized in that The sealing ring is provided with an elastic abutment, which is an annular structure. The elastic abutment includes a first sealing ring, an annular avoidance groove, and a second sealing ring. The first sealing ring is located on the outer peripheral side of the annular avoidance groove and is tightly attached to the groove wall of the mounting groove. The second sealing ring is located on the inner peripheral side of the annular avoidance groove and is tightly attached to the outer side wall of one end of the mounting head.

10. The floating connection mechanism according to claim 8, It is characterized in that The third floating connection assembly further includes a ventilation connection block, which is fixedly connected to the rear end of the third connection member and communicates with the installation groove.

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