CN111331289A

CN111331289A - Transmission device and vacuum welding equipment

Info

Publication number: CN111331289A
Application number: CN202010355995.9A
Authority: CN
Inventors: 胡新荣
Original assignee: Shenzhen Dongxin Technology Co ltd
Current assignee: Shenzhen Dongxin Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-06-26

Abstract

The invention discloses a transmission device and vacuum welding equipment. The transmission device is used for transmitting the lead frame, and the lead frame is plate-shaped. The transmission device includes: the supporting structure comprises a supporting seat and a sliding seat in sliding connection with the supporting seat; the conveying structure comprises a plurality of conveying rods, one end of each conveying rod is connected with the sliding seat, the other end of each conveying rod extends horizontally, the conveying rods are sequentially arranged at intervals and used for supporting the lead frame, and the distance between every two conveying rods is adjustable; and the driving structure is used for driving the sliding seat to slide along the axial direction of the transmission rods relative to the supporting seat, and each transmission rod moves horizontally along with the sliding seat and transmits the lead frame to a preset position. The invention can improve the compatibility of the transmission device and effectively transmit the lead frame.

Description

Transmission device and vacuum welding equipment

Technical Field

The invention belongs to the field of vacuum welding technical equipment, and particularly relates to a transmission device and vacuum welding equipment.

Background

At present, lead frames are generally placed on a chain, and the transmission from a first station to a second station is realized through the rotation of the chain.

However, chain transmission is prone to jitter and poor in compatibility, and cannot effectively transmit lead frames with small sizes, thin thicknesses or soft thicknesses.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a transmission device, which aims to solve the problem of how to improve the compatibility of the transmission device to transmit different types of lead frames.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a transporting device for transporting an object, wherein the object has a plate shape, the transporting device comprising:

the supporting structure comprises a supporting seat, a sliding seat in sliding connection with the supporting seat and a supporting table in opposite connection with the supporting seat;

the conveying structure comprises a plurality of conveying rods, one end of each conveying rod is connected with the sliding seat, the other end of each conveying rod extends horizontally and is connected with the supporting table, the conveying rods are sequentially arranged at intervals and used for supporting the target, and the distance between every two conveying rods is adjustable;

the lifting structure comprises a bottom plate, lifting plates, a cam rotating shaft and a driving wheel, wherein the lifting plates are arranged opposite to the bottom plate, the cam rotating shaft is positioned between the bottom plate and the lifting plates and is rotationally connected with the bottom plate, the driving wheel is connected with the cam rotating shaft, the driving wheel is arranged in an eccentric wheel mode, the driving wheel is abutted against a plate surface, arranged downwards, of the lifting plates, the two lifting structures are arranged, the supporting seat is positioned on one of the lifting plates, and the supporting seat is positioned on the other lifting plate; and

the driving structure comprises a first driver and a second driver, the first driver is used for driving the sliding seat to slide along the axial direction of the conveying rods relative to the supporting seat, each conveying rod horizontally moves along with the sliding seat and conveys the target object to a preset position, and the second driver is used for driving the two cam rotating shafts to synchronously rotate so as to synchronously lift or synchronously lower the two lifting plates.

In one embodiment, the conveying rod is provided with positioning grooves for limiting the object to move axially along the conveying rod, and two ends of the object are respectively clamped in the two corresponding positioning grooves.

In one embodiment, the sliding seat is provided with an adjusting groove, an extending path of the adjusting groove is staggered with the axial direction of the conveying rods, the conveying structure further comprises adjusting blocks, one ends of the adjusting blocks are arranged in the adjusting groove, the number of the adjusting blocks is matched with the number of the conveying rods, the other ends of the adjusting blocks are respectively connected with one conveying rod, and the positions of the adjusting blocks in the adjusting groove are adjustable.

In one embodiment, the supporting seat comprises two horizontal guide shafts arranged at intervals, the axial direction of each horizontal guide shaft is the same as that of the conveying rod, the sliding seat is provided with two guide holes matched with the guide rods at intervals, and the sliding seat is in sliding fit with the two horizontal guide shafts through the two guide holes.

In one embodiment, the sliding seat comprises a sliding plate, an adjusting beam and a connecting upright post connecting the sliding plate and the adjusting beam, the adjusting groove is arranged on the adjusting beam, and the two guide holes are arranged on the sliding plate.

In one embodiment, the supporting platform includes two supporting arms disposed at intervals, a supporting beam having two ends respectively connected to the two supporting arms, and a plurality of sliders connected to the supporting beam, each of the sliders is disposed in one-to-one correspondence with each of the conveying rods, the supporting beam is provided with a sliding slot, one end of each slider is detachably connected to the sliding slot, and the other end of each slider is provided with a guide slot for supporting the conveying rod and guiding the conveying rod to slide.

In one embodiment, the driving structure further includes a screw mechanism connected to the first driver, the screw mechanism includes two screw side plates, a ball screw and a screw nut, the two screw side plates are disposed along the axial direction of the conveying rod at intervals, the sliding seat is located between the two screw side plates, the screw nut is connected to the sliding seat, two ends of the ball screw are respectively connected to the two screw side plates, the screw nut is in threaded fit with the ball screw, and the first driver is connected to one end of the ball screw and drives the ball screw to rotate.

In one embodiment, the lifting plate is provided with a through hole, and the lifting structure further comprises a follower wheel which is rotatably connected to the lifting plate and is in butt fit with the driving wheel at the through hole.

In one embodiment, the lifting structure further comprises a guide mechanism for guiding the lifting plate to lift in a reciprocating manner, the guide mechanism comprises a guide post connected with the bottom plate and a guide sleeve connected with the lifting plate and in sliding fit with the guide post, and the guide mechanism is arranged in a plurality at intervals.

It is a further object of the present invention to provide a vacuum welding apparatus comprising a transfer device as described above.

The invention has the beneficial effects that: through setting up many transfer bars to adjust the interval between two adjacent transfer bars, thereby make the range of each transfer bar and the size, thickness and the hardness adaptation of lead frame, improved the compatibility of conveying structure. The lead frame is released to the conveying rods at the first station, and then the conveying rods are driven to horizontally slide along the axial direction of the conveying rods through the driving structure, so that the lead frame is moved to the second station from the first station, and then the lifting plate descends and releases the lead frame to the second station, or the lifting plate ascends to the second station and lifts off the lead frame. The transmission rod does not shake in the process of parallel movement, so that stable transmission of the lead frame is facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a vacuum welding apparatus according to an embodiment of the present invention;

FIG. 2 is an exploded view of a transfer device of the vacuum welding apparatus of one embodiment of FIG. 1;

FIG. 3 is an exploded view of a transfer device of the vacuum welding apparatus in another embodiment of FIG. 1;

FIG. 4 is a schematic perspective view of a lifting structure of the vacuum welding apparatus in the further embodiment of FIG. 1;

fig. 5 is a perspective view of a cooling station of the vacuum welding apparatus in yet another embodiment of fig. 1.

Wherein, in the figures, the respective reference numerals:

100. vacuum welding equipment; 10. a support structure; 11. a supporting seat; 12. a sliding seat; 112. a horizontal guide shaft; 111. supporting the side plates; 20. a transfer structure; 21. a transfer rod; 13. a support table; 101. a welding station; 102. a vacuum station; 103. a cooling station; 30. a drive structure; 31. a first driver; 32. a second driver; 33. a speed reducer; 34. a second belt; 35. a lead screw mechanism; 211. positioning a groove; 124. an adjustment groove; 36. an adjusting block; 121. adjusting the cross beam; 122. a sliding plate; 123. connecting the upright posts; 351. a lead screw nut; 352. a ball screw; 353. a lead screw side plate; 311. a first belt; 40. a lifting structure; 41. a base plate; 42. a lifting plate; 43. a cam shaft; 44. a driving wheel; 45. a follower wheel; 451. a through hole; 46. a guide mechanism; 461. a guide sleeve; 462. a guide post; 131. a support arm; 132. a support beam; 133. a slider; 134. a chute; 47. a longitudinal stop lever; 47. a longitudinal stop lever; 48. a transverse limiting rod; 411. mounting holes; 113. a guide hole; 33. a speed reducer; 38. a driven wheel.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 and 3, a conveying device for conveying a target object from a first station to a second station is provided according to an embodiment of the present invention. In the present embodiment, the target is a plate-shaped lead frame. The transfer device comprises a support structure 10, a transfer structure 20, a drive structure 30 and a lifting structure 40. The support structure 10 includes a support base 11 and a sliding base 12 slidably coupled to the support base 11. Alternatively, the supporting seat 11 is disposed on a workbench or a ground, and the sliding seat 12 is driven by an external force to slide horizontally relative to the supporting seat 11. The transmission structure 20 includes a transmission rod 21, one end of the transmission rod 21 is connected to the sliding seat 12, and the other end of the transmission rod 21 is horizontally extended, it can be understood that when the sliding seat 12 horizontally slides along a predetermined direction, the transmission rod 21 horizontally slides along with the sliding seat 12 towards the predetermined direction. Wherein the transfer rod 21 is provided with a plurality of pieces. The conveying rods 21 are arranged at intervals in sequence and used for supporting the lead frame, and the distance between the conveying rods 21 is adjustable. Alternatively, the lead frame abuts downward against each of the transfer levers 21 and moves together with the movement of the transfer levers 21. The driving mechanism 30 includes a first driver 31 and a second driver 32, the first driver 31 is used for driving the sliding seat 12 to slide along the axial direction of the conveying rod 21 relative to the supporting seat 11, and each conveying rod 21 moves horizontally together with the sliding seat 12 and conveys the lead frame to the second station. The lifting structure 40 is used for driving the support structure 10 to reciprocate up and down. The lifting structure 40 includes a bottom plate 41, a lifting plate 42 disposed opposite to the bottom plate 41, a cam rotating shaft 43 disposed between the bottom plate 41 and the lifting plate 42 and rotatably connected to the bottom plate 41, and a driving wheel 44 connected to the cam rotating shaft 43, wherein the driving wheel 44 abuts against a downward plate surface of the lifting plate 42, and the driving wheel 44 is disposed in an eccentric manner. Specifically, during the rotation of the driving wheel 44 along with the cam rotating shaft 43, the rotation center of the driving wheel 44 is not coincident with the geometric center thereof, so that the driving wheel 44 is in an eccentric arrangement during the rotation. Alternatively, the driver 44 is a cam. Optionally, a plurality of lifting structures 40 are provided, each lifting structure 40 is sequentially linearly arranged, the lifting plates 42 of the two head-tail lifting structures 40 are provided with the supporting seats 11, and the lifting plate 42 of each lifting structure 40 located in the middle is provided with the supporting table 13. The second driver 32 is a servo motor and is used for driving the two cam rotating shafts 43 to rotate synchronously, and alternatively, the power of the second driver 32 can be transmitted to the two cam rotating shafts 43 respectively through a connecting mechanism. It can be understood that the transfer rod 21 realizes the material taking and blanking of the lead frames during the up-down lifting process.

By arranging the plurality of conveying rods 21 and adjusting the distance between two adjacent conveying rods 21, the arrangement of the conveying rods 21 is matched with the size, thickness and hardness of the lead frame, and the compatibility of the conveying structure 20 is improved. The lead frame is released onto the conveying rods 21 at the first station, and then each conveying rod 21 is driven by the driving structure 30 to horizontally slide along the axial direction of the conveying rod, so that the lead frame is moved from the first station to the second station. And then lowered by the lift plate 42 and released from the lead frame at the second station, or the lift plate 42 is raised and lifted off the lead frame at the second station. Since the transfer bar 21 does not shake during the parallel movement, smooth transfer of the lead frame is facilitated.

Alternatively, the cam shafts 43 are integrally formed and coaxially disposed, and the second driver 32 drives the cam shafts 43 to synchronously rotate, so that the two lifting plates 42 are synchronously lifted. Further, the lifting plate 42 is provided with two support tables 13, and the two support tables 13 are provided at intervals in the axial direction of the transfer rod 21.

Referring to fig. 4 and 5, in one embodiment, the sliding seat 12 is provided with an adjusting groove 124, and an extending path of the adjusting groove 124 is staggered with the axial direction of the transmission rod 21. Specifically, the extending path of the regulating groove 124 is disposed orthogonal to the axial direction of the transfer rod 21. The conveying structure 20 further includes adjusting blocks 36 having one end disposed in the adjusting groove 124, the number of the adjusting blocks 36 is adapted to the number of the conveying rods 21, the other end of each adjusting block 36 is connected to one conveying rod 21, and the position of the adjusting block 36 in the adjusting groove 124 is adjustable. Specifically, the adjustment slot 124 is a dovetail slot, and the shape of one end of the adjustment block 36 is adapted to the shape of the dovetail slot. The adjusting block 36 slides along the adjusting groove 124, so that the distance between two adjacent conveying rods 21 can be adjusted, a threaded hole communicated with the adjusting groove 124 is formed in the adjusting block 36, and after the adjusting block 36 is adjusted in place, the adjusting block 36 can be screwed in the adjusting groove 124 through a bolt, so that the connecting position of the conveying rods 21 and the sliding seat 12 is fixed.

In one embodiment, the conveying rod 21 is provided with positioning grooves 211 for limiting the lead frame to move axially along the conveying rod 21, and two ends of the lead frame are respectively clamped in the two corresponding positioning grooves 211. It can be understood that the conveying rod 21 is provided with a plurality of positioning slots 211, and the positioning slots 211 are arranged at intervals along the axial direction of the conveying rod 21. Each of the transfer bars 21 is formed with a plurality of positioning grooves 211 so that a plurality of lead frames can be transferred at the same time. Further, the driving structure 30 drives each of the conveying rods 21 to move step by step, and the distance of a single movement is equal to the distance between two adjacent positioning slots 211 on the same conveying rod.

In one embodiment, the supporting seat 11 includes two horizontal guiding shafts 112 arranged at intervals, the axial direction of the horizontal guiding shafts 112 is the same as the axial direction of the conveying rod 21, the sliding seat 12 is provided with two guiding holes 113 matched with the guiding rods, the two guiding holes 113 are arranged at intervals, and the sliding seat 12 is slidably matched with the two horizontal guiding shafts 112 through the two guiding holes 113. Specifically, the sliding seat 12 includes a sliding plate 122, an adjusting beam 121, and a connecting pillar 123 connecting the sliding plate 122 and the adjusting beam 121, the adjusting groove 124 is opened in the adjusting beam 121, and the guide hole 113 is opened in the sliding plate 122.

Referring to fig. 1 and fig. 3, in an embodiment, the driving structure 30 further includes a screw mechanism 35 connected to the first driver 31, the screw mechanism 35 includes two screw side plates 353, a ball screw 352, and a screw nut 351, the two screw side plates 353 are disposed at intervals along an axial direction of the transmission rod 21, the sliding seat 12 is located between the two screw side plates 353, the screw nut 351 is connected to the sliding plate 122, two ends of the ball screw 352 are respectively connected to the two screw side plates 353, the screw nut 351 is in threaded engagement with the ball screw 352, and the first driver 31 is connected to one end of the ball screw 352 and drives the ball screw 352 to rotate. The driving structure 30 further includes a first belt 311, the first driver 31 is a servo motor, the first belt 311 transmits the rotational power of the first driver 31 to the ball screw 352 and drives the ball screw 352 to rotate, and the ball screw 352 converts the rotational motion into the linear motion of the sliding plate 122 through the screw nut 351. It will be appreciated that by changing the direction of rotation of the servo motor, the direction of movement of the slide plate 122 can be changed, thereby causing the transfer bar 21 to reciprocate between the first and second stations.

In one embodiment, the driving mechanism 30 further includes a speed reducer 33, a driven pulley 38 connected to the cam shaft 43, and a second belt 34. One end of the second belt 34 is wound around the driven pulley 38, and the other end of the second belt 34 is connected to the speed reducer 33, so that the rotational power of the second driver 32 can be transmitted to the cam rotating shaft 43 through the second belt 34, so that the driving pulley 44 eccentrically rotates and drives the lifting plate 42 to reciprocate up and down

It can be understood that the belt transmission has the characteristics of impact and vibration alleviation, smooth movement, no noise and the like. The servo motor drives the transmission rod 21 through belt transmission, so that the transmission structure is stable in transmission and high in efficiency.

Optionally, the supporting base 11 further includes supporting side plates 111, and both ends of the horizontal guiding shaft 112 are respectively connected to the lifting plate 42 through the two supporting side plates 111.

Referring to fig. 4 and 5, in one embodiment, the lifting plate 42 is provided with a through hole 451, and the lifting structure 40 further includes a follower wheel 45 rotatably connected to the lifting plate 42 and engaged with the driving wheel 44 at the through hole 451. Through the butt cooperation of action wheel 44 and follow-up wheel 45 to can realize the up-and-down movement of lifter plate 42, roll connection between follow-up wheel 45 and action wheel 44 moreover still reduces the friction loss between action wheel 44 and the follow-up wheel 45.

Referring to fig. 3 and 5, in one embodiment, the lifting structure 40 further includes a guiding mechanism 46 for guiding the lifting plate 42 to lift and lower reciprocally, and the guiding mechanism 46 includes a guiding post 462 connected to the bottom plate 41 and a guiding sleeve 461 connected to the lifting plate 42 and cooperating with the guiding post 462. The guide mechanisms 46 are provided in plurality at intervals, and in the present embodiment, four guide mechanisms 46 are provided at intervals. The elevating plate 42 can be smoothly moved relative to the base plate 41 by the guide mechanism 46.

In one embodiment, the bottom plate 41 has a mounting groove corresponding to the driving wheel 44, the lifting structure 40 further includes two longitudinal position-limiting rods 47 having one ends connected to the lifting plate 42 and two ends connected to the two longitudinal position-limiting rods 47, respectively, the driving wheel 44 is located between the two longitudinal position-limiting rods 47, and the transverse position-limiting rods 48 are located in the mounting groove. The two longitudinal restraint rods 47 and the transverse restraint rod 48 jointly restrain the position of the driving wheel 44 and protect the driving wheel 44.

In one embodiment, the supporting structure 10 further includes a supporting platform 13 for supporting the other end of the conveying rod 21 and spaced apart from the supporting base 11, the supporting platform 13 includes two supporting arms 131 spaced apart from each other, a supporting beam 132 having two ends respectively connected to the two supporting arms 131, and a plurality of sliders 133 connected to the supporting beam 132, each slider 133 is respectively disposed corresponding to each conveying rod 21, the supporting beam 132 is provided with a sliding slot 134, one end of each slider 133 is detachably connected to the sliding slot 134, and the other end of each slider 133 is provided with a guiding slot for supporting the conveying rod 21 and guiding the conveying rod 21 to slide.

Referring to fig. 1 and fig. 3, the present invention further provides a vacuum welding apparatus 100, the vacuum welding apparatus 100 includes a transmission device, the specific structure of the transmission device refers to the above embodiments, and since the vacuum welding apparatus 100 adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not repeated herein.

In one embodiment, the vacuum welding apparatus 100 includes a plurality of lifting structures 40, each lifting structure 40 being linearly arranged in sequence. Wherein, two lifting structures 40 located at the head and the tail are respectively provided with a supporting structure 10 and a driving structure 30, and the other lifting structures 40 are respectively provided with two supporting platforms 13.

Optionally, the first driver 31 and the second driver 31 can work in a linkage manner or independently; the first and the last second drivers 32 can work in a linkage mode or can work independently. The two first drivers 31 synchronously drive the two transmission rods 21 to reciprocate at the two ends of the transmission rods 21, so that the transmission stability of the transmission rods 21 is improved. Similarly, the two second drivers 32 may simultaneously drive the lifting plates 42 to synchronously lift.

Referring to fig. 1 and 3, in the present embodiment, a welding station 101, a vacuum station 102, and a cooling station 103 are optionally sequentially disposed along the arrangement direction of each lifting structure 40.

The processing flow of the lead frame is explained below by combining the structural features of the vacuum welding apparatus 100:

s1: placing a lead frame at one end of a vacuum welding device 100 in a welding station 101 by a manipulator;

s2: after welding, the second driver 32 at one end of the vacuum welding device 100 drives the cam rotating shaft 43 to rotate, and the lifting plate 42 is lifted upwards to drive the conveying rod 21 to move upwards and lift the lead frame;

s3: the first driver 31, which is located at the same end as the second driver 32 above, drives the transfer bar 21 to move and transfer the lead frame to above the next bonding station 101;

s4: the second driver 32 continues to drive the cam rotating shaft 43 to rotate, the lifting plate 42 descends and releases the lead frame to the welding station 101, and simultaneously the first driver 31 rotates reversely to enable each transmission rod 21 to return to the original position;

repeating steps S2-S4 until all lead frames are sequentially conveyed to the vacuum station 102;

s5: after the lead frame is processed at the vacuum station 102, the second driver 32 at the other end of the vacuum welding device 100 drives the lifting plate 42 to lift upwards, the conveying rods 21 lift the lead frame, and then the first driver 31 at the other end of the vacuum welding device 100 drives each conveying rod 21 to move so as to convey the lead frame to the cooling station 103 for cooling.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveying device for conveying an object, wherein the object has a plate shape, the conveying device comprising:

the supporting structure (10) comprises a supporting seat (11), a sliding seat (12) connected with the supporting seat (11) in a sliding mode and a supporting seat (13) connected with the supporting seat (11) in an opposite mode;

the conveying structure (20) comprises conveying rods (21), one end of each conveying rod (21) is connected with the sliding seat (12), the other end of each conveying rod (21) extends horizontally and is connected with the supporting table (13), a plurality of conveying rods (21) are arranged, each conveying rod (21) is sequentially arranged at intervals and is used for supporting the target, and the distance between every two conveying rods (21) is adjustable;

the lifting structure (40) comprises a bottom plate (41), lifting plates (42) arranged opposite to the bottom plate (41), cam rotating shafts (43) located between the bottom plate (41) and the lifting plates (42) and rotatably connected with the bottom plate (41), and driving wheels (44) connected with the cam rotating shafts (43), wherein the driving wheels (44) are arranged in an eccentric manner, the driving wheels (44) are abutted against the downward plate surfaces of the lifting plates (42), the lifting structure (40) is provided with two lifting structures, the supporting seat (11) is located on one of the lifting plates (42), and the supporting seat (13) is located on the other lifting plate (42); and

the driving structure (30) comprises a first driver (31) and a second driver (32), the first driver (31) is used for driving the sliding seat (12) to slide along the axial direction of the conveying rods (21) relative to the supporting seat (11), each conveying rod (21) horizontally moves along with the sliding seat (12) and conveys the target object to a preset position, and the second driver (32) is used for driving the two cam rotating shafts (43) to synchronously rotate so as to synchronously lift or synchronously lower the two lifting plates (42).

2. The transmission apparatus of claim 1, wherein: the conveying rod (21) is provided with positioning grooves (211) used for limiting the target object to move along the axial direction of the conveying rod (21), and two ends of the target object are respectively clamped in the two corresponding positioning grooves (211).

3. The transmission apparatus of claim 1, wherein: the sliding seat (12) is provided with an adjusting groove (124), the extending path of the adjusting groove (124) and the axial direction of the conveying rods (21) are arranged in a staggered mode, the conveying structure (20) further comprises adjusting blocks (36) with one ends arranged in the adjusting groove (124), the number of the adjusting blocks (36) is matched with the number of the conveying rods (21), the other ends of the adjusting blocks (36) are respectively connected with one conveying rod (21), and the positions of the adjusting blocks (36) in the adjusting groove (124) are adjustable.

4. The transmission apparatus of claim 3, wherein: the supporting seat (11) comprises two horizontal guide shafts (112) arranged at intervals, the axial direction of the horizontal guide shafts (112) is the same as the axial direction of the conveying rod (21), two guide holes (113) matched with the guide rods are formed in the sliding seat (12), the two guide holes (113) are arranged at intervals, and the sliding seat (12) is in sliding fit with the two horizontal guide shafts (112) through the two guide holes (113).

5. The transmission apparatus of claim 4, wherein: the sliding seat (12) comprises a sliding plate (122), an adjusting beam (121) and a connecting upright post (123) for connecting the sliding plate (122) and the adjusting beam (121), the adjusting groove (124) is arranged on the adjusting beam (121), and the two guide holes (113) are arranged on the sliding plate (122).

6. The transmission apparatus according to any one of claims 1 to 4, wherein: support bench (13) are including two support arms (131), the both ends that the interval set up connect two respectively support beam (132) of support arm (131) and connect a plurality of sliders (133) of support beam (132), each slider (133) respectively with each conveying rod (21) one-to-one sets up, spout (134) have been seted up in support beam (132), the one end detachably of slider (133) connect in spout (134), the support has been seted up to the other end of slider (133) conveying rod (21) and guide conveying rod (21) gliding guide way.

7. The transmission apparatus according to any one of claims 1 to 4, wherein: the driving structure (30) further comprises a screw mechanism (35) connected with the first driver (31), the screw mechanism (35) comprises two screw side plates (353), a ball screw (352) and a screw nut (351), the two screw side plates (353) are arranged at intervals along the axial direction of the conveying rod (21), the sliding seat (12) is located between the two screw side plates (353), the screw nut (351) is connected with the sliding seat (12), two ends of the ball screw (352) are respectively connected with the two screw side plates (353), the screw nut (351) is in threaded fit with the ball screw (352), and the first driver (31) is connected with one end of the ball screw (352) and drives the ball screw (352) to rotate.

8. The transmission apparatus according to any one of claims 1 to 4, wherein: the lifting plate (42) is provided with a through hole (451), and the lifting structure (40) further comprises a follow-up wheel (45) which is rotatably connected to the lifting plate (42) and is in butt fit with the driving wheel (44) at the through hole (451).

9. The transmission apparatus according to any one of claims 1 to 4, wherein: the lifting structure (40) further comprises a guide mechanism (46) used for guiding the lifting plate (42) to reciprocate, the guide mechanism (46) comprises a guide post (462) connected with the bottom plate (41) and a guide sleeve (461) connected with the lifting plate (42) and matched with the guide post (462) in a sliding mode, and the guide mechanism (46) is arranged in a plurality at intervals.

10. A vacuum welding apparatus (100) comprising a transfer device according to any of claims 1-9.