Positioning device

Abstract

The utility model relates to the technical field of mechanical equipment positioning, in particular to a positioning device which comprises a driving piece, a transmission assembly used for changing the transmission direction, and a pin shaft connected with the output end of the transmission assembly, and the output end of the driving piece is connected with the input end of the transmission assembly. The driving piece indirectly drives the pin shaft to do linear reciprocating motion through the transmission assembly. The transmission assembly is used for converting a driving form, so that the pin shaft and the driving piece are separated, the pin shaft is prevented from being directly connected with the driving piece, the output end of the pin shaft and the output end of the transmission assembly bear main external force loads, the upper limit of the overall bearable load of the device is increased, and the device can adapt to more working conditions; meanwhile, external force is prevented from being directly transmitted to the driving part, the driving part is prevented from being damaged, long-term stable operation of the device is guaranteed, and the working stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment positioning technical field more particularly, relate to a positioning device. BACKGROUND

[0002] In automobile production and manufacturing, automatic production can improve production efficiency and product quality, in the automatic production line, the load that track conveying line can bear is higher, is widely used in the field of automobile manufacturing. In the track conveying line, the mobile mechanism carries the material to move to the set position, and the positioning mechanism is locked and positioned to the mobile mechanism to ensure that the material is accurately stopped at the designated position in the conveying process. In the positioning mechanism, the telescopic positioning pin is more common, when the material moves to the designated position, the pin shaft is driven to extend by the cylinder or other power source, and is inserted into the pin hole on the mobile mechanism, realizing the positioning function of the mobile mechanism. The existing telescopic positioning pin mostly directly uses the cylinder, the piston rod of the cylinder directly acts as the pin shaft, the piston rod is directly stressed during operation, the radial force received will be transmitted to the cylinder, which is easy to cause the deformation of the cylinder body, and further causes the extension to be out of position or the retraction to be out of position, affecting the normal conveying of the material, and also easily causing the overall damage of the cylinder, and the working stability is low. SUMMARY

[0003] The utility model discloses to overcome the defect that the telescopic positioning pin in the prior art uses the cylinder as the driving component, the piston rod of the cylinder is directly stressed, and the cylinder is easy to be damaged, provides a positioning device, avoids the damage of the driving component directly stressed, and improves the working stability of the device.

[0004] To solve the above technical problems, the utility model adopts the technical scheme: a positioning device, comprising: driving piece, the transmission assembly for changing the transmission direction, the pin shaft is connected with the output end of the transmission assembly, the output end of the driving piece is connected with the input end of the transmission assembly, and the driving piece drives the pin shaft to carry out linear reciprocating motion through the transmission assembly.

[0005] The driving member is used to drive the transmission assembly, and then indirectly drives the pin shaft to perform linear reciprocating motion, the pin shaft is positioned when it is extended, and the external moving mechanism or the material is fixed, and the pin shaft is reset when it is retracted, so that the external moving mechanism or the material continues to move; specifically, the driving member adopts a rotary motor, a linear driving motor, a rotary cylinder or a common cylinder with linear driving; the transmission assembly is used to transmit power of the driving member to the pin shaft, and change the transmission direction in the process of power transmission, the transmission structure of the transmission assembly is matched with the driving form of the driving member, when the driving member selects a rotary driving form, the transmission assembly needs to convert the rotary driving into linear driving, for example, gear and rack transmission, belt transmission, chain transmission and crank rocker transmission, when the driving member selects linear driving, linear driving can be first converted into rotary driving, and then converted into linear driving; through the conversion of the driving form by the transmission assembly, the pin shaft is separated from the driving member, so that the pin shaft and the output end of the transmission assembly bear the main external force load, the upper limit of the load that can be borne by the whole device is improved, the device can adapt to more working conditions, and meanwhile, the external force is avoided from being directly transmitted to the driving member, so as to avoid damaging the driving member and ensure that the device can stably operate for a long time, and the working stability of the device is improved.

[0006] Preferably, the device further comprises a support, the transmission assembly comprises a first gear connected with the output end of the driving member, and a first rack in sliding connection with the support, and the first gear and the first rack are in meshing connection with each other.

[0007] The first rack is in sliding connection with the support, so that the sliding precision of the first rack is ensured, and the pin shaft is connected with the first rack, so that the reciprocating precision of the pin shaft is ensured, and the pin shaft is prevented from being skewed when moving, the first gear is connected with the output end of the driving member, the driving member directly or indirectly drives the first gear, and then drives the first rack and the pin shaft to perform linear reciprocating motion.

[0008] Preferably, the transmission assembly further comprises a second gear connected with the output end of the driving member, the second gear is in meshing connection with the first gear, and the first gear is in rotary connection with the support.

[0009] The second gear is arranged between the driving member and the first gear, the second gear is in meshing connection with the first gear, and the second gear is arranged to further separate the pin shaft and the driving member, so as to further prevent the external force from being transmitted to the driving member; further, the first gear and the second gear have three forms, one is that the first gear and the second gear have the same diameter; two is that the second gear has a larger diameter than the first gear, at this time, the second gear drives the first gear, and the acceleration effect of the first gear can be realized, so as to improve the response speed of the pin shaft; three is that the second gear has a smaller diameter than the first gear, at this time, the second gear drives the first gear, and the deceleration effect of the first gear can be realized, so as to improve the moving precision of the pin shaft.

[0010] Preferably, the transmission assembly further comprises a second rack connected with the output end of the driving member, the second rack is in meshing connection with the second gear, the second gear is in rotational connection with the support, and the second rack is in sliding connection with the support.

[0011] The second rack is arranged between the second gear and the driving member, and is used for changing the driving mode of the driving member, and is used for selecting the driving member with linear driving. The second rack is also in sliding connection with the support, so as to ensure the movement accuracy of the second rack. Further, the driving member is selected as a common cylinder with linear driving, so as to reduce the cost of the device.

[0012] Preferably, the transmission assembly further comprises a sliding rail assembly, the first rack and the second rack are respectively in sliding connection with the support through the sliding rail assembly.

[0013] The sliding rail assembly is adopted to further improve the sliding smoothness and movement accuracy of the first rack and the second rack.

[0014] Preferably, the support comprises an L-shaped frame and a protective frame, the first rack is in sliding connection with the L-shaped frame through the sliding rail assembly, the first gear and the second gear are respectively in rotational connection with the protective frame, and the second rack is in sliding connection with the protective frame through the sliding rail assembly.

[0015] The L-shaped frame is used for connecting with external equipment and is also used for mounting the first rack. The protective frame is used for connecting with external equipment and is also used for mounting the first gear and the second gear. Further, the L-shaped frame is further provided with an inclined reinforcing rib, which is used for increasing the overall strength of the L-shaped frame.

[0016] Preferably, the protective frame is provided with a mounting groove, the first gear and the second gear are arranged in the mounting groove respectively, and the first rack is located at the opening of the mounting groove.

[0017] The mounting groove is arranged for mounting the first gear and the second gear, and also plays a protective role for the first gear and the second gear. The first rack is arranged at the opening of the mounting groove, is in meshing connection with the first gear, and also facilitates the lubricating oil on the first gear and the second gear at the opening of the mounting groove.

[0018] Preferably, the protective frame is further provided with a through hole, the first rack and the second rack are perpendicular to each other, and the second rack passes through the through hole and extends out of the opening of the mounting groove.

[0019] The first rack and the second rack are perpendicular to each other, so as to fully realize the isolation of the external force on the pin shaft and fully avoid the transmission of the external force to the driving member.

[0020] Preferably, the first gear and the second gear are arranged along the moving direction of the first rack, and the second gear is provided with an annular avoiding portion for avoiding the first rack.

[0021] The first gear and the second gear are arranged along a first rack moving direction, and the second gear is provided with an annular clearance for avoiding the first rack, so that the structure is relatively compact and the occupied space is reduced.

[0022] Preferably, the pin shaft is fixedly connected with the first rack through a pin.

[0023] The connection mode of the pin shaft and the first rack includes detachable connection and fixed connection, the detachable connection includes threaded connection and bolt connection, and the fixed connection includes welding and pin connection. When the pin connection is arranged, the pin axis is consistent with the moving direction of the external moving mechanism, so that the pin shaft is prevented from being deflected by external force.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] 1. The transmission assembly is used for converting the driving mode, the pin shaft is separated from the driving part, the pin shaft and the output end of the transmission assembly bear the main external force load, the upper limit of the load that can be borne by the device as a whole is improved, the device can adapt to more working conditions, the external force is prevented from being directly transmitted to the driving part, the driving part is prevented from being damaged, the device can be stably operated for a long time, and the working stability of the device is improved.

[0026] 2. The protective frame is arranged for mounting the first gear and the second gear, the first gear and the second gear are stably driven, and the first gear and the second gear are protected. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic view of a positioning device of the utility model;

[0028] Figure 2 It is a whole structure schematic view of another angle of a positioning device of the utility model;

[0029] Figure 3 It is an internal structure schematic view of a positioning device of the utility model;

[0030] Figure 4 It is a side view structure schematic view of a positioning device of the utility model.

[0031] In the drawing: 1, driving part; 2, transmission assembly; 3, pin shaft; 4, first gear; 5, first rack; 6, second gear; 7, second rack; 8, slide rail assembly; 9, L-shaped frame; 10, protective frame; 11, mounting groove; 12, through hole; 13, annular clearance. DETAILED DESCRIPTION

[0032] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0035] Example 1

[0036] like Figure 1 As shown, a positioning device includes: a driving component 1, a transmission assembly 2 for changing the transmission direction, and a pin 3 connected to the output end of the transmission assembly 2. The output end of the driving component 1 is connected to the input end of the transmission assembly 2, and the driving component 1 indirectly drives the pin 3 to perform linear reciprocating motion through the transmission assembly 2.

[0037] The driving component 1 drives the transmission assembly 2, which in turn indirectly drives the pin 3 to perform linear reciprocating motion. When the pin 3 extends, it positions and fixes the external moving mechanism or material. When it retracts, it resets and allows the external moving mechanism or material to continue moving. Specifically, the driving component 1 can be a rotary motor, a linear drive motor, a rotary cylinder, or a linear drive cylinder. The transmission assembly 2 is used to transmit the power of the driving component 1 to the pin 3 and change the transmission direction during the power transmission process. The transmission structure of the transmission assembly 2 is matched with the driving form of the driving component 1. When the driving component 1 selects a rotary drive, the transmission assembly 2 needs to convert the rotary drive into a linear drive, such as a gear and rack drive, belt drive, chain drive, or crank-rocker drive. When the driving component 1 selects a linear drive, it can be converted into a rotary drive first and then back into a linear drive.

[0038] The beneficial effects of the embodiment are: through the conversion of the driving form by the transmission assembly 2, the pin shaft 3 is separated from the driving part 1, avoiding the direct connection of the pin shaft 3 and the driving part 1, so that the pin shaft 3 and the output end of the transmission assembly 2 bear the main external force load, which improves the upper limit of the load that the device can bear as a whole, so that the device can adapt to more working conditions, and at the same time, it also avoids the direct transmission of external force to the driving part 1, avoids damaging the driving part 1, ensures that the device can operate stably for a long time, and improves the working stability of the device.

[0039] Embodiment 2

[0040] The embodiment is further limited on the basis of embodiment 1, and the difference between the embodiment and embodiment 1 is:

[0041] As shown in Figures 1-4 , it also includes a support, the transmission assembly 2 includes a first gear 4 connected with the output end of the driving part 1, and a first rack 5 slidingly connected with the support, the first gear 4 and the first rack 5 are meshed with each other. The transmission assembly 2 further includes a second gear 6 connected with the output end of the driving part 1, the second gear 6 and the first gear 4 are meshed with each other, and the first gear 4 is rotatably connected with the support. The transmission assembly 2 further includes a second rack 7 connected with the output end of the driving part 1, the second rack 7 and the second gear 6 are meshed with each other, the second gear 6 is rotatably connected with the support, and the second rack 7 is slidingly connected with the support.

[0042] By setting the first rack 5 to be slidingly connected with the support, the sliding accuracy of the first rack 5 is ensured, and the pin shaft 3 is connected with the first rack 5, so that the accuracy of the reciprocating motion of the pin shaft 3 can be ensured, and the pin shaft 3 is prevented from being skewed when moving. The first gear 4 is connected with the output end of the driving part 1, the driving part 1 directly or indirectly drives the first gear 4, and then drives the first rack 5 and the pin shaft 3 to perform linear reciprocating motion. The second gear 6 is arranged between the driving part 1 and the first gear 4, the second gear 6 is meshed with the first gear 4, and the second gear 6 is arranged to further separate the pin shaft 3 and the driving part 1, and further avoid the transmission of external force to the driving part 1. Further, the first gear 4 and the second gear 6 have three forms, one is that the first gear 4 and the second gear 6 have the same diameter; two is that the diameter of the second gear 6 is greater than that of the first gear 4, at this time the second gear 6 drives the first gear 4, which can realize the acceleration effect of the first gear 4 and improve the response speed of the pin shaft 3; three is that the diameter of the second gear 6 is smaller than that of the first gear 4, at this time the second gear 6 drives the first gear 4, which can realize the deceleration effect of the first gear 4 and improve the moving accuracy of the pin shaft 3. The second rack 7 is arranged between the second gear 6 and the driving part 1, which is used to change the driving mode of the driving part 1, and is used to select the driving part 1 for linear driving. The second rack 7 is also slidingly connected with the support, which ensures the moving accuracy of the second rack 7. Further, the driving part 1 selects a common cylinder for linear driving, which reduces the cost of the device.

[0043] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1.

[0044] Embodiment 3

[0045] On the basis of Embodiment 1 or Embodiment 2, Embodiment 1 or Embodiment 2 is further limited in that:

[0046] As Figures 1-4 shown, further comprising a slide rail assembly 8, the first rack 5 and the second rack 7 are respectively connected with the bracket through the slide rail assembly 8. The bracket comprises an L-shaped bracket 9 and a protective bracket 10, the first rack 5 is connected with the L-shaped bracket 9 through the slide rail assembly 8, the first gear 4 and the second gear 6 are respectively connected with the protective bracket 10, and the second rack 7 is connected with the protective bracket 10 through the slide rail assembly 8. The protective bracket 10 is provided with a mounting groove 11, the first gear 4 and the second gear 6 are respectively arranged in the mounting groove 11, and the first rack 5 is located at the opening of the mounting groove 11. The protective bracket 10 is further provided with a through hole 12, the first rack 5 and the second rack 7 are perpendicular to each other, the second rack 7 passes through the through hole 12 and extends out of the opening of the mounting groove 11. The first gear 4 and the second gear 6 are arranged along the moving direction of the first rack 5, and the second gear 6 is provided with an annular avoiding part 13 for avoiding the first rack 5. The pin shaft 3 is fixedly connected with the first rack 5 through a pin.

[0047] The slide rail assembly 8 is adopted to further improve the smoothness and moving accuracy of the first rack 5 and the second rack 7. The L-shaped bracket 9 is used for connecting with external equipment and also used for mounting the first rack 5, the protective bracket 10 is used for connecting with external equipment and also used for mounting the first gear 4 and the second gear 6, and further, the L-shaped bracket 9 is further provided with an inclined reinforcing rib for increasing the overall strength of the L-shaped bracket 9. The mounting groove 11 is arranged for mounting the first gear 4 and the second gear 6, and also plays a protective role for the first gear 4 and the second gear 6, the first rack 5 is arranged at the opening of the mounting groove 11 and engaged with the first gear 4, and also facilitates lubricating oil on the first gear 4 and the second gear 6 at the opening of the mounting groove 11. The first rack 5 and the second rack 7 are perpendicular to each other, which fully realizes the isolation of external force on the pin shaft 3 and fully avoids the transmission of external force to the driving part 1. The first gear 4 and the second gear 6 are arranged along the moving direction of the first rack 5, and the second gear 6 is provided with the annular avoiding part 13 for avoiding the first rack 5, which is relatively compact in structure and reduces the occupied space. The connection mode of the pin shaft 3 and the first rack 5 includes detachable connection and fixed connection, the detachable connection includes threaded connection and bolt connection, and the fixed connection includes welding and pin connection. When the pin connection is arranged, the pin axis is consistent with the moving direction of the external moving mechanism, so as to avoid the deflection of the pin shaft 3 under external force.

[0048] The remaining working principles and working processes of this embodiment are consistent with those of Embodiment 1 or Embodiment 2.

[0049] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the description.

[0050] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A positioning device, characterized in that, include: The drive component (1), the transmission assembly (2) for changing the transmission direction, and the pin (3) connected to the output end of the transmission assembly (2) are provided. The output end of the drive component (1) is connected to the input end of the transmission assembly (2). The drive component (1) indirectly drives the pin (3) to perform linear reciprocating motion through the transmission assembly (2).

2. The positioning device according to claim 1, characterized in that: It also includes a bracket, and the transmission assembly (2) includes a first gear (4) connected to the output end of the drive member (1) and a first rack (5) slidably connected to the bracket, wherein the first gear (4) and the first rack (5) mesh with each other.

3. A positioning device according to claim 2, characterized in that: The transmission assembly (2) further includes a second gear (6) connected to the output end of the drive member (1), the second gear (6) meshing with the first gear (4), and the first gear (4) being rotatably connected to the bracket.

4. A positioning device according to claim 3, characterized in that: The transmission assembly (2) further includes a second rack (7) connected to the output end of the drive member (1), the second rack (7) meshing with the second gear (6), the second gear (6) being rotatably connected to the bracket, and the second rack (7) being slidably connected to the bracket.

5. A positioning device according to claim 4, characterized in that: It also includes a slide rail assembly (8), wherein the first rack (5) and the second rack (7) are slidably connected to the bracket via the slide rail assembly (8).

6. A positioning device according to claim 4, characterized in that: The bracket includes an L-shaped frame (9) and a protective frame (10). The first rack (5) is slidably connected to the L-shaped frame (9) via a slide rail assembly (8). The first gear (4) and the second gear (6) are rotatably connected to the protective frame (10) respectively. The second rack (7) is slidably connected to the protective frame (10) via the slide rail assembly (8).

7. A positioning device according to claim 6, characterized in that: The protective frame (10) is provided with a mounting groove (11), and the first gear (4) and the second gear (6) are respectively disposed in the mounting groove (11), and the first rack (5) is located at the opening of the mounting groove (11).

8. A positioning device according to claim 7, characterized in that: The protective frame (10) is also provided with a through hole (12), the first rack (5) and the second rack (7) are perpendicular to each other, the second rack (7) passes through the through hole (12) and extends out from the opening of the mounting groove (11).

9. A positioning device according to claim 8, characterized in that: The first gear (4) and the second gear (6) are arranged along the moving direction of the first rack (5), and the second gear (6) is provided with an annular clearance part (13) for avoiding the first rack (5).

10. A positioning device according to claim 2, characterized in that: The pin (3) is fixedly connected to the first rack (5) by a pin.

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