Bidirectional traction mechanism

Abstract

The utility model belongs to the field of body-in-white welding, and particularly relates to a bidirectional traction mechanism. The bidirectional traction mechanism comprises a fixing unit and a transplanting unit, the fixing unit comprises a transmission assembly and a positioning guide mechanism, the transplanting unit comprises a driven assembly and a positioning moving mechanism, the transplanting unit further comprises a traction connecting piece, and the transmission assembly is used for transmitting components on the transplanting unit so as to drive the transplanting unit to move on the positioning guide mechanism; the driven assembly is used for receiving the transmission force from the transmission assembly so as to drive the positioning moving mechanism to move on the positioning guide mechanism; the utility model provides a bidirectional traction mechanism to solve the problems that in the prior art, the overall cost of a flexible clamp switching system is high, and the motion of an existing traction mechanism is smaller than the length of the traction mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of white car body welding, specifically relates to a bidirectional traction mechanism. BACKGROUND

[0002] With the increasing demand and importance of social automobile products, the automation degree of automobile white car body welding production line is also improved, and along with the automation of white car body welding production line becoming mature, the automation requirement of multi-model inline production is gradually improved.

[0003] In order to realize multi-model inline production, the white car body welding production line is often equipped with a flexible clamp switching system, in which the tooling clamp usually needs to be stored in the clamp library, the clamp library is located on both sides of the conveying slide, and the switching is realized by driving the traction mechanism.

[0004] The existing traction mechanism is mainly distributed in the library, so as to realize the movement of the tooling clamp between the conveying slide and the library where the tooling clamp is located, therefore, each library needs a set of traction mechanism, which leads to high overall cost of the flexible clamp switching system, and if the traction mechanism is installed on the conveying slide, the traction mechanism must be able to pull the clamp in the library on both sides, that is, the movement stroke of the traction mechanism must exceed the length of the traction mechanism itself, but the movement stroke of the existing traction mechanism is less than the length of the traction mechanism itself, which cannot meet the requirement. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a bidirectional traction mechanism to solve the problems of high overall cost of the flexible clamp switching system in the prior art and the movement stroke of the existing traction mechanism being less than the length of the traction mechanism itself.

[0006] One scheme of the utility model provides a bidirectional traction mechanism, which comprises:

[0007] The fixed unit comprises a transmission assembly and a positioning guide mechanism, the transmission assembly is used for driving the components on the transplanting unit to move the transplanting unit on the positioning guide mechanism;

[0008] The transplanting unit comprises a driven assembly and a positioning moving mechanism, the driven assembly is connected with the transmission assembly, the positioning moving mechanism is movably connected with the positioning guide mechanism, and the driven assembly is used for receiving the driving force from the transmission assembly to drive the positioning moving mechanism to move on the positioning guide mechanism (12);

[0009] The transplanting unit further comprises a traction connecting piece, and the traction connecting piece is used for pulling the external clamp unit to move;

[0010] The transmission assembly, the driven assembly and the transplanting unit are provided with transmission elements, the transmission elements on the transmission assembly are in transmission connection with the transmission elements on the driven assembly, and the transmission elements on the driven assembly are in transmission connection with the transmission elements on the transplanting unit.

[0011] It should be noted that the transmission assembly is externally connected with a driving device for driving the transmission assembly, and the transmission assembly drives the driven assembly in the transplanting unit under the driving of the driving device, the driven assembly drives the positioning moving mechanism to move on the positioning guide mechanism, so as to drive the movement of the transplanting unit on the fixed unit, and further drive the traction connecting piece for traction of the external clamp unit to realize the traction of the external clamp unit.

[0012] It should be noted that the number of the transplanting unit can be specifically set to two and located at two ends of the fixed unit, and the two transplanting units can all traction the external clamp unit through the traction connecting piece, and when the two transplanting units work on the fixed unit under the transmission of the transmission assembly, the effect of simultaneously traction of the external clamp units on both sides of the fixed unit can be realized.

[0013] It should be additionally noted that the fixed unit in the utility model is specifically installed on the conveying slide table, and the external clamp unit is specifically installed in the storage position of the clamp warehouse, the fixed unit is conveyed to the corresponding storage position through the conveying slide table, the transplanting unit is controlled to stretch out from the fixed unit to both sides, the traction connecting piece is connected with the external clamp unit, at this time, the transplanting unit is controlled to shrink to the fixed unit, and the traction of the external clamp unit can be completed.

[0014] In the scheme, through the cooperation between the transmission assembly, the positioning guide mechanism, the driven assembly and the positioning moving mechanism, the transplanting unit can be moved on the fixed unit according to actual production needs, and then the traction connecting piece on the transplanting unit is connected with the external clamp unit, and the external clamp units on both sides of the fixed unit are synchronously traction.

[0015] In one of the schemes, the fixed unit further comprises a fixing piece, and the transmission assembly and the positioning guide mechanism are both installed on the fixing piece.

[0016] In one of the schemes, the transmission assembly comprises a driving gear and a transmission gear installed on the fixing piece, the driving gear is in meshing connection with the transmission gear, and the transmission gear is in meshing connection with the rack in the driven assembly.

[0017] It should be noted that the fixing member is specifically a bottom plate mounted on the conveying sliding table, and the driving gear and the transmission gear are both mounted on the bottom plate. When the driving gear rotates under the driving of the external driving device, the transmission gear rotates synchronously with the driving gear due to the meshing of the driving gear and the transmission gear, and the transplanting unit is mounted with a second rack meshing with the transmission gear, and the transmission gear drives the transplanting unit to move on the bottom plate through the second rack.

[0018] It should be noted that the positioning guide mechanism is also mounted on the bottom plate, and the positioning guide mechanism is specifically a bearing set. The positioning moving mechanism in the transplanting unit is specifically a guide rail, and the transplanting unit is movably connected to the bearing set through the guide rail, and moves on the fixed unit through the second rack meshing with the transmission gear, the transmission gear and the driven gear.

[0019] In this scheme, the power provided by the external driving device to the driving gear is converted into the power for moving the transplanting unit on the fixed unit through the transmission assembly meshing with the transplanting unit and the positioning moving mechanism on the transplanting unit cooperating with the positioning guide mechanism, so as to realize the traction of the external clamp unit through the traction connecting piece on the transplanting unit.

[0020] In one of the schemes, the transmission assembly further comprises a first rack, which is mounted on the fixing member and is in meshing connection with the driven assembly.

[0021] It should be noted that the first rack is specifically mounted on the bottom plate and is in meshing connection with the driven gear in the driven assembly.

[0022] In one of the schemes, the transplanting unit further comprises a first transplanting member and a second transplanting member, and the second transplanting member is movably mounted on the first transplanting member.

[0023] In one of the schemes, the positioning moving mechanism is mounted on the first transplanting member, and the traction connecting piece is mounted on the second transplanting member.

[0024] In this scheme, the second transplanting member is specifically slidably connected to the first transplanting member, which can increase the traction distance of the traction connecting piece itself on the transplanting unit to the external clamp unit.

[0025] In one of the schemes, the driven assembly further comprises a second rack, which is mounted on the first transplanting member and is in meshing connection with the transmission assembly.

[0026] It should be noted that the second rack is in meshing connection with the transmission gear in the transmission assembly.

[0027] In one of the schemes, the driven assembly further comprises a third rack, which is mounted on the second transplanting member, and the driven assembly is mounted between the first transplanting member and the second transplanting member.

[0028] In one of the schemes, the driven assembly comprises a plurality of mutually meshed driven gears, which are in meshing connection with the third rack.

[0029] In the scheme, the driven gears can drive the second transplanting member to slide on the first transplanting member through the third rack mounted on the second transplanting member, thereby synchronously driving the traction connecting members on the second transplanting member to move synchronously, and traction of the external clamp units is realized.

[0030] In one of the schemes, the transplanting unit is provided with at least two.

[0031] In the scheme, the at least two transplanting units are provided, so that the utility model can at least traction the external clamp units located on both sides of the fixed unit. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in these drawings without creative labor.

[0033] Figure 1 The overall structure schematic diagram of the utility model;

[0034] Figure 2 It is one of the internal structure schematic diagrams of the utility model;

[0035] Figure 3 It is another internal structure schematic diagram of the utility model;

[0036] Figure 4 It is Figure 2 The internal structure schematic diagram of connecting external clamp unit;

[0037] Figure 5 It is the structure schematic diagram of external clamp unit in the utility model.

[0038] Wherein, 1, fixed unit; 11, transmission assembly; 111, drive gear; 112, transmission gear; 113, first rack; 12, positioning guide mechanism; 13, fixing piece; 2, transplanting unit; 21, driven assembly; 22, positioning movement mechanism; 23, traction connecting piece; 24, first transplanting piece; 25, second transplanting piece; 26, second rack; 27, third rack; 28, driven gear; 3, external clamp unit; 31, drive pin hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0042] Please refer to Figures 1-5 In one embodiment, a bidirectional traction mechanism is provided, comprising:

[0043] The fixed unit 1 comprises a transmission assembly 11 and a positioning guide mechanism 12, the transmission assembly 11 is used to drive the components on the transplanting unit 2 to drive the transplanting unit 2 to move on the positioning guide mechanism 12;

[0044] The transplanting unit 2 comprises a driven assembly 21 connected with the transmission assembly 11 and a positioning moving mechanism 22 movably connected with the positioning guide mechanism 12, the driven assembly 21 is used to receive the transmission power from the transmission assembly 11 to drive the positioning moving mechanism 22 to move on the positioning guide mechanism 12;

[0045] The transplanting unit 2 further comprises a traction connecting piece 23 used to drive the external clamp unit 3 to move;

[0046] The transmission assembly 11, the driven assembly 21 and the transplanting unit 2 are all provided with transmission elements, the transmission elements on the transmission assembly 11 are in transmission connection with the transmission elements on the driven assembly 21, and the transmission elements on the driven assembly 21 are in transmission connection with the transmission elements on the transplanting unit 2.

[0047] It should be noted that the transmission elements are used to transmit the energy generated by the power source (such as motor, engine, etc.) to the actuator (such as mechanical arm, wheel, pump, etc.) or transmit the energy generated by the power source among multiple actuators.

[0048] Therefore, the transmission elements include but are not limited to: mechanical transmission elements such as gear and rack, gear and gear, turbine and worm; or fluid transmission elements such as hydraulic cylinder and hydraulic push rod, pneumatic motor and pneumatic push rod.

[0049] Only in this embodiment, the mechanical transmission elements are described: the transmission assembly 11, the driven assembly 21 and the transplanting unit 2 all comprise gears and racks, the transmission assembly 11 and the driven assembly 21 are connected by gear and rack meshing, and the driven assembly 21 and the transplanting unit 2 are also connected by gear and rack meshing.

[0050] It should be noted that the transmission assembly 11 is externally connected with a driving device for driving the transmission assembly 11, under the driving of the driving device, the transmission assembly 11 drives the driven assembly 21 in the transplanting unit 2, the driven assembly 21 drives the positioning moving mechanism 22 to move on the positioning guide mechanism 12, so as to drive the transplanting unit 2 to move on the fixing unit 1, and further drive the traction connecting piece 23 for driving the external clamp unit 3 to realize the traction of the external clamp unit 3.

[0051] It should be further noted that, referring to Figure 3The number of the transplanting units 2 can be specifically set as two and located at two ends of the fixed unit 1 respectively, and the two transplanting units 2 can pull the external clamp units 3 through the traction connecting pieces 23, and when the two transplanting units 2 work on the fixed unit 1 simultaneously under the transmission of the transmission assembly 11, the effect of simultaneously pulling the external clamp units 3 on both sides of the fixed unit 1 can be realized.

[0052] It needs to be additionally explained that the fixed unit 1 in the utility model is specifically installed on the conveying slide table, the external clamp unit 3 is specifically installed in the storage position of the clamp warehouse, the fixed unit 1 is conveyed to the corresponding storage position through the conveying slide table, the transplanting unit 2 is controlled to stretch out from the fixed unit 1 to both sides, the traction connecting piece 23 is connected with the external clamp unit 3, at this time, the transplanting unit 2 is controlled to shrink to the fixed unit 1, and the pulling of the external clamp unit 3 can be completed.

[0053] In addition, in the embodiment, the traction connecting piece 23 is specifically a telescopic bolt, and at least two telescopic bolts are arranged, and the external clamp unit 3 is provided with a driving pin hole 31 matched with the telescopic bolt; when the external clamp unit 3 is pulled, one of the telescopic bolts is connected to the driving pin hole 31 on one of the external clamp units 3, and the other telescopic bolt is connected to the driving pin hole 31 on the other external clamp unit 3, and when the transplanting unit 2 moves on the fixed unit 1, the traction connecting piece 23 can synchronously pull the two external clamp units 3.

[0054] In the embodiment, through the cooperation between the transmission assembly 11, the positioning guide mechanism 12, the driven assembly 21 and the positioning moving mechanism 22, the transplanting unit 2 can move on the fixed unit 1 according to actual production needs, and then the traction connecting piece 23 on the transplanting unit 2 is connected with the external clamp unit, and the external clamp unit 3 on both sides of the fixed unit 1 is synchronously pulled.

[0055] In one of the embodiments, the fixed unit 1 further comprises a fixing piece 13, and the transmission assembly 11 and the positioning guide mechanism 12 are both installed on the fixing piece 13.

[0056] In one of the embodiments, the transmission assembly 11 comprises a driving gear 111 and a transmission gear 112 installed on the fixing piece 13, the driving gear 111 is engaged with the transmission gear 112, and the transmission gear 112 is engaged with the rack in the driven assembly 21.

[0057] It should be noted that the fixing member 13 is specifically a bottom plate mounted on the conveying slide table, and the driving gear 111 and the transmission gear 112 are both mounted on the bottom plate. When the driving gear 111 is driven to rotate by the external driving device, the transmission gear 112 rotates synchronously with the driving gear 111 due to the meshing with the driving gear 111, and the transplanting unit 2 is mounted with the second rack 26 meshing with the transmission gear 112, so that the transmission gear 112 drives the transplanting unit 2 to move on the bottom plate through the second rack 26.

[0058] It should be noted that the positioning guide mechanism 12 is also mounted on the bottom plate, and the positioning guide mechanism 12 is specifically a bearing set. The positioning moving mechanism 22 in the transplanting unit 2 is specifically a guide rail, and the transplanting unit 2 is movably connected to the bearing set through the guide rail, and moves on the fixed unit 1 by cooperating with the transmission gear 112 and the driven gear 28 through the second rack 26 meshing with the transmission gear 112.

[0059] In this embodiment, the transmission assembly 11 engaged by the transplanting unit 2, and the positioning guide mechanism 12 cooperating with the positioning moving mechanism 22 on the transplanting unit 2, can convert the power provided by the external driving device to the driving gear 111 into the power for moving the transplanting unit 2 on the fixed unit 1, so as to realize the traction of the external clamp unit 3 through the traction connecting piece 23 on the transplanting unit 2.

[0060] In one embodiment, the transmission assembly 11 further comprises a first rack 113 mounted on the fixing member 13, and the first rack 113 is in meshing connection with the driven assembly 21.

[0061] It should be noted that the first rack 113 is specifically mounted on the bottom plate and is in meshing connection with the driven gear 28 in the driven assembly 21.

[0062] In one embodiment, the transplanting unit 2 further comprises a first transplanting member 24 and a second transplanting member 25, and the second transplanting member 25 is movably mounted on the first transplanting member 24.

[0063] It should be noted that the first transplanting member 24 and the second transplanting member 25 are specifically fork arms.

[0064] In one embodiment, the positioning moving mechanism 22 is mounted on the first transplanting member 24, and the traction connecting piece 23 is mounted on the second transplanting member 25.

[0065] In this embodiment, the second transplanting member 25 is specifically slidably connected to the first transplanting member 24, and such design can increase the traction distance of the traction connecting piece 23 itself on the transplanting unit 2 to the external clamp unit 3.

[0066] In one embodiment, the driven assembly 21 further comprises a second rack 26, which is mounted on the first moving member 24, and the second rack 26 is in meshing connection with the transmission assembly 11.

[0067] It should be noted that the second rack 26 is in meshing connection with the transmission gear 112 in the transmission assembly 11.

[0068] In one embodiment, the driven assembly 21 further comprises a third rack 27, which is mounted on the second moving member 25, and the driven assembly 21 is mounted between the first moving member 24 and the second moving member 25.

[0069] In one embodiment, the driven assembly 21 comprises a plurality of driven gears 28 in meshing connection with each other, and the driven gears 28 are in meshing connection with the third rack 27.

[0070] In this embodiment, the driven gears 28 can drive the second moving member 25 to slide on the first moving member 24 through the third rack 27 mounted on the second moving member 25, so as to synchronously drive the traction connecting member 23 on the second moving member 25 to move synchronously, thereby achieving traction of the external clamp unit 3.

[0071] In one embodiment, the moving unit 2 is provided with at least two.

[0072] In this embodiment, at least two moving units 2 are provided, which can enable the utility model to at least traction the external clamp unit 3 located on both sides of the fixed unit 1. Figure 3

[0073] The above description is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the utility model concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.​

Claims

1. A bidirectional traction mechanism, characterized in that, include: The fixed unit (1) includes a transmission assembly (11) and a positioning guide mechanism (12). The transmission assembly (11) is used to drive the components on the transplanting unit (2) to move the transplanting unit (2) on the positioning guide mechanism (12). The transplanting unit (2) includes a driven component (21) and a positioning and moving mechanism (22). The driven component (21) is connected to the transmission component (11), and the positioning and moving mechanism (22) is movably connected to the positioning and guiding mechanism (12). The driven component (21) is used to receive the transmission force from the transmission component (11) to drive the positioning and moving mechanism (22) to move on the positioning and guiding mechanism (12). The transplanting unit (2) also includes a traction connector (23), which is used to pull the external clamp unit (3) to move. The transmission assembly (11), the driven assembly (21), and the transplanting unit (2) are all provided with transmission elements. The transmission elements on the transmission assembly (11) are connected to the transmission elements on the driven assembly (21), and the transmission elements on the driven assembly (21) are connected to the transmission elements on the transplanting unit (2).

2. The bidirectional traction mechanism as described in claim 1, characterized in that, The fixing unit (1) also includes a fixing member (13), and the transmission assembly (11) and the positioning guide mechanism (12) are both installed on the fixing member (13).

3. A bidirectional traction mechanism as described in claim 2, characterized in that, The transmission assembly (11) includes a drive gear (111) and a transmission gear (112) mounted on the fixing member (13), the drive gear (111) meshing with the transmission gear (112), and the transmission gear (112) meshing with the rack in the driven assembly (21).

4. A bidirectional traction mechanism as described in claim 2, characterized in that, The transmission assembly (11) further includes a first rack (113), which is mounted on the fixing member (13) and is engaged with the driven assembly (21).

5. A bidirectional traction mechanism as described in claim 1, characterized in that, The transplanting unit (2) further includes a first transplanting component (24) and a second transplanting component (25), wherein the second transplanting component (25) is mounted on the first transplanting component (24).

6. A bidirectional traction mechanism as described in claim 5, characterized in that, The positioning and moving mechanism (22) is installed on the first transplanting member (24), and the traction connecting member (23) is movably installed on the second transplanting member (25).

7. A bidirectional traction mechanism as described in claim 5, characterized in that, The driven component (21) further includes a second rack (26), which is mounted on the first transplanting member (24) and is engaged with the transmission component (11).

8. A bidirectional traction mechanism as described in claim 5, characterized in that, The driven component (21) further includes a third rack (27) which is mounted on the second transplanter (25), and the driven component (21) is mounted between the first transplanter (24) and the second transplanter (25).

9. A bidirectional traction mechanism as described in claim 8, characterized in that, The driven assembly (21) includes a plurality of meshing driven gears (28), which are meshed with the third rack (27).

10. A bidirectional traction mechanism as described in claim 1, characterized in that, The transplanting unit (2) has at least two units.

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