CN212291972U - Charging tray conveyor and welding equipment - Google Patents

Abstract

The application provides a charging tray conveyor and welding equipment. The material tray conveying device and the welding equipment comprise two material tray frames for storing material trays, a carrying mechanism for conveying the material trays on one material tray frame to an appointed working position and conveying the material trays at the appointed working position to the other material tray frame, a reciprocating driving mechanism for driving the carrying mechanism to reciprocate between the two material tray frames and a rack, wherein the two material tray frames and the reciprocating driving mechanism are both arranged on the rack, the two material tray frames are respectively positioned above two ends of the reciprocating driving mechanism, and the carrying mechanism is arranged on the reciprocating driving mechanism. The charging tray conveying device and the welding equipment adopt the charging tray frame, the charging tray is convenient to load and take out, the frequency of manual loading on the charging tray is reduced, the occupied manual work time is reduced, the automatic feeding of the equipment is promoted, and the production efficiency of products is improved.

Description

Charging tray conveyor and welding equipment

Technical Field

The application belongs to the technical field of welding, and more specifically relates to a charging tray conveyor and welding equipment.

Background

With the development of electronic devices, the demand for various electronic components (such as diodes) is increasing, and the automation degree of the devices is also increasing. During the production process of the diode, the tube seat and the tube cap need to be welded through an energy storage welding device to form the diode. The energy storage welding equipment adopts a suction head to suck the tube seat and the tube cap from the material tray and convey the tube seat and the tube cap to a welding center, and the finished diode is placed on one material tray through the suction head. When welding equipment carries out welding operation, because the positions of a charging tray and an empty tray (or a finished product tray) are arranged in front of the appointed working position of the suction head, after a tube seat or a tube cap on each tray is used up, the suction head needs to be moved out of the appointed working position of the tray so as to wait for manual replacement of the tray. Among the existing welding equipment, the loading and taking-out positions of the material tray are close to the designated working position of the material tray, so that the manual operation is inconvenient, and the equipment efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a charging tray conveying device to after tube socket or pipe cap used up on every charging tray of energy storage welding equipment who exists among the solution prior art, need wait for the manual work to change, occupy man-hour, influence the technical problem of equipment efficiency.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the material tray conveying device comprises two material tray frames for storing material trays, a conveying mechanism for conveying the material trays on one material tray frame to a designated working position and conveying the material trays on the designated working position to the other material tray frame, a reciprocating driving mechanism for driving the conveying mechanism to reciprocate between the two material tray frames and a rack, wherein the two material tray frames and the reciprocating driving mechanism are both arranged on the rack, the two material tray frames are respectively positioned above two ends of the reciprocating driving mechanism, and the conveying mechanism is arranged on the reciprocating driving mechanism; each tray rack comprises a cabinet for positioning and accommodating the tray, a support for supporting the cabinet and a support assembly for supporting and releasing the tray in the cabinet, a channel for the tray to enter and exit is formed in the bottom of the cabinet, the support is mounted on the rack, and the support assembly is mounted on the support.

Optionally, one side of the upper end of the cabinet is provided with a slot for the feeding disc to horizontally pass in and out.

Optionally, the cabinet includes two side plates disposed opposite to each other, a limit baffle respectively disposed on each of the side plates, and a connection plate respectively disposed at the bottom of each of the side plates, each of the connection plates is located at one side of the corresponding side plate, and each of the limit baffles is located at the other side of the corresponding side plate; the two connecting plates and the corresponding side edges of the two side plates form the slot.

Optionally, the support assembly comprises a support block and a first cylinder to drive the support block towards the cabinet; the first air cylinder is installed on the support, and the supporting components are arranged on two sides of the cabinet respectively.

Optionally, the top and the bottom of the connecting plate are respectively provided with two guiding slopes for guiding the tray to enter and exit the channel.

Optionally, the carrying mechanism includes a lifting seat for supporting the material tray, a lifting driving assembly for driving the lifting seat to lift, and a sliding seat for supporting the lifting seat, wherein the lifting driving assembly is installed on the sliding seat, and the sliding seat is installed on the reciprocating driving mechanism in a sliding manner.

Optionally, the lifting seat comprises a movable plate for bearing the material tray and a sliding rod for supporting the movable plate, the sliding seat comprises a supporting plate, a sliding sleeve sleeved on the sliding rod and a connecting frame for supporting the supporting plate, the movable plate is connected with the lifting driving assembly, the sliding sleeve is fixed on the supporting plate, and the connecting frame is connected with the reciprocating driving mechanism.

Optionally, two limiting plates for positioning the charging tray are respectively arranged on two adjacent sides of the supporting plate, and an ejector for ejecting the charging tray towards one corner adjacent to the two limiting plates is arranged on the supporting plate.

Optionally, the ejector comprises an ejector block and a second air cylinder for driving the ejector block to move.

The embodiment of the application also provides welding equipment, which comprises a welding center and the tray conveying device in any embodiment.

The application provides a charging tray conveyor and welding equipment's beneficial effect lies in: compared with the prior art, the material tray conveying device and the welding equipment have the advantages that the material tray frame is adopted, a plurality of material trays can be stored at one time, the conveying mechanism can convey the material trays on one material tray frame to the designated working position for feeding, and convey the empty material trays or the material trays filled with finished products to the other material tray frame for storage, so that the frequency of manual loading on the material trays is reduced, the occupied manual work time is reduced, the automatic feeding of the equipment is promoted, and the production efficiency of the products is improved; the two material tray frames are arranged above two ends of the reset driving mechanism respectively, so that the two material tray frames are prevented from being close to an appointed working position, the material trays can be conveniently loaded and taken out, the manual operation is facilitated, and the equipment efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, 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 perspective view of a welding apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view of a tray conveying device according to an embodiment of the present application;

FIG. 3 is an exploded view of the tray transport apparatus of FIG. 2;

fig. 4 is a schematic perspective view of the tray frame in fig. 2;

FIG. 5 is a schematic perspective view of the carrying mechanism in FIG. 2;

FIG. 6 is an exploded view of the handling mechanism of FIG. 5;

FIG. 7 is an enlarged view taken at A in FIG. 2;

FIG. 8 is an enlarged view at B in FIG. 3;

fig. 9 is a schematic perspective view of a tray provided in an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100-tray conveying device; 200-welding center; 1-material tray; 10-an adaptation surface; 2-a material tray frame; 21-a support; 22-a cabinet; 220-a channel; 2201-slotting; 2202-a bar groove; 221-side plate; 222-a limit stop; 223-connecting plate; 2231-a guide ramp; 23-a support assembly; 231-a support block; 232-a first cylinder; 3-a carrying mechanism; 31-a lifting seat; 311-a movable plate; 312-a slide bar; 32-a sliding seat; 321-a support plate; 322-a sliding sleeve; 323-connecting frame; 324-a slider; 325-a limiting plate; 33-a lift drive assembly; 331-a lifting motor; 332-a gear; 333-rack; 34-an ejector; 341-pushing block; 342-a second cylinder; 4-reciprocating drive mechanism; 41-a slide rail; 42-a reciprocating motor; and 5, a frame.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application 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 present application and are not intended to limit the present application.

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 that 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 thus should not be considered as limiting the present application.

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 application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to fig. 3, a tray conveying device 100 according to an embodiment of the present application will be described. The material tray conveying device 100 comprises two material tray frames 2, a carrying mechanism 3, a reciprocating driving mechanism 4 and a rack 5, wherein the material tray frames 2 are used for storing material trays 1, the carrying mechanism 3 is used for carrying the material trays 1 on one material tray frame 2 to a specified working position and carrying the material trays 1 in the specified working position to the other material tray frame 2, and the reciprocating driving mechanism 4 drives the carrying mechanism 3 to reciprocate between the two material tray frames 2. Two material tray racks 2 and reciprocating driving mechanism 4 are both installed on a machine frame 5, the two material tray racks 2 are respectively positioned above two ends of the reciprocating driving mechanism 4, and the carrying mechanism 3 is installed on the reciprocating driving mechanism 4. Two material tray frames 2 are adopted to store two groups of material trays 1, one material tray frame 2 can continuously complete the feeding of tube bases or tube caps on a plurality of material trays 1, and the other material tray frame 2 can receive empty material trays 1 or finished material trays 1. The frequency of loading and unloading of the material tray 1 is reduced, the working hours occupied by loading and unloading of the material tray 1 are reduced, continuous loading can be realized, the automation degree of equipment is improved, and the production efficiency of products is improved. Two material tray racks 2 are arranged at two ends of the reciprocating driving mechanism 4, enough space (such as a material tray loaded from the rear side of the welding center 200 and a material tray 1 taken from the front side of the welding center 200) can be reserved for loading or taking out the material tray 1, the material tray 1 is convenient to load and take out, the manual operation is convenient, and the welding efficiency of the welding center 200 is improved. Wherein: the designated work position is located between two tray racks 2, and the designated work position may be located adjacent to one tray rack 2; a material tray frame 2 can be used for storing material trays, and the material trays are stored with tube seats or tube caps; the other tray frame 2 can be used for storing an empty tray or a finished tray, the empty tray is taken away from a tube seat or a tube cap on the raw material tray and then is empty, and the finished tray 1 stores diode welding finished products.

Alternatively, referring to fig. 2 to 4, each tray rack 2 includes a cabinet 22, a support 21 and a support assembly 23, the cabinet 22 is used for positioning and accommodating the trays 1; the holder 21 supports a cabinet 22 and the support assembly 23 is used to support and release the tray 1 in the cabinet 22. The bottom of the cabinet 22 is provided with a channel 220, the channel 220 is used for feeding and discharging the feeding disc 1, the support 21 is installed on the frame 5, and the supporting component 23 is installed on the support 21. After the tray 1 rises and slides into the channel 220, the supporting component 23 can extend out to stop the tray 1 from falling down and support the tray 1, so that the tray 1 is stored in the cabinet 22; when the carrying mechanism 3 conveys the material tray 1 to the lower side of the material tray 1 again, the supporting component 23 retracts to release the material tray 1, the material tray 1 on the carrying mechanism 3 rises and slides into the channel 220, the material tray 1 is lifted upwards and lifted into the cabinet 22, at the moment, the supporting component 23 extends out again to support the material tray 1 lifted and lifted into the channel 220, the material tray 1 is supported, and the stacking and storage of the material tray 1 are realized. When the carrying mechanism 3 moves to the lower part of the cabinet 22, the supporting component 23 can release the material tray 1 stored in the cabinet 22, the material tray 1 slides to the carrying mechanism 3 through the channel 220, the carrying mechanism 3 descends, the supporting component 23 can extend out again to support the material tray 1 on the upper side, and therefore release of one material tray 1 is achieved. The support assembly 23 is used to support and release the trays 1 so that the tray rack 2 can control the storage and release of the trays 1.

Optionally, referring to fig. 2 to 4, the upper end of the cabinet 22 is provided with a slot 2201, and the slot 2201 is used for the feeding plate 1 to horizontally enter and exit the cabinet 22. Therefore, the charging tray 1 can horizontally enter and exit the cabinet 22, the charging tray 1 is prevented from being moved up and down when being loaded and taken out, and the workload of the charging tray 1 when being loaded and taken out is reduced. Optionally, a buffer table is arranged outside the slot 2201, and buffers the tray 1, and the buffer table is used for supporting the buffered tray 1 to slide into the cabinet 22 or storing the tray 1 sliding out of the cabinet 22. Optionally, the other side of the cabinet 22 is provided with a strip-shaped groove 2202, and the strip-shaped groove 2202 is formed to facilitate ejection of the tray 1 out of the groove 2201 from the cabinet 22 when the tray 1 is output.

In one embodiment of the present application, referring to fig. 2 to 4, the cabinet 22 includes two side plates 221, two limit baffles 222 and two connecting plates 223, the two side plates 221 are disposed opposite to each other, each connecting plate 223 is disposed on each side plate 221, each limit baffle 222 is disposed at the bottom of each side plate 221, each connecting plate 223 is located on one side of the corresponding side plate 221, and each limit baffle 222 is located on the other side of the corresponding side plate 221. The two connecting plates 223 and the corresponding sides of the two side plates 221 form a slot 2201 therebetween. The connecting plate 223, the side plate 221 and the limit baffle 222 define a channel 220 to guide the tray 1 to slide up and down; on the other hand, the connecting plate 223 and the side corresponding to the side plate 221 form a slot 2201, so that the feeding tray 1 can horizontally enter and exit the cabinet 22. Optionally, a strip-shaped groove 2202 is formed between the two limit baffles 222. This facilitates on the one hand pushing out the tray 1 in the cabinet 22 and on the other hand adjusting the position of the two side plates 221, facilitating the sliding of the tray 1 in the cabinet 22.

Alternatively, referring to fig. 2 to 4, the supporting assembly 23 includes a supporting block 231 and a first cylinder 232, and the first cylinder 232 drives the supporting block 231 to move toward the cabinet 22. After the supporting block 231 extends into the cabinet 22, the tray 1 in the cabinet 22 can be supported, so that the tray 1 is prevented from falling; after the first cylinder 232 drives the supporting block 231 to retract, the tray 1 can slide up and down. Alternatively, the first cylinder 232 is mounted on the support 21, and the support assemblies 23 are mounted on two sides of the cabinet 22. This can keep the stability of tray 1 in cabinet 22, avoid the charging tray 1 to incline one side. Alternatively, referring to fig. 2 to 4, the support assemblies 23 have four sets, two sets of support assemblies 23 are respectively disposed on the two limit baffles 222, and two sets of support assemblies 23 are respectively disposed on the two connecting plates 223. The four sets of supporting components 23 correspond to two sides of the channel 220, and are beneficial to supporting and releasing the material tray 1 in the channel 220. Of course, in other embodiments of the present application, the supporting blocks 231 may be provided on the side plates 221; a linear motor or an electromagnet may be used to drive the support block 231.

Alternatively, referring to fig. 2 to 4, the support 21 includes two support plates, the two support plates are disposed opposite to each other, the lower end of each support plate is connected to the frame 5, the upper end of one support plate is connected to the two connecting plates 223, and the upper end of the other support plate is connected to the lower ends of the two limit baffles 222, so that interference with the carrying mechanism 3 can be avoided.

Alternatively, referring to fig. 2, 4 and 8, the connecting plate 223 is provided with two guiding slopes 2231 at the top and the bottom, respectively, and the two guiding slopes 2231 are used for guiding the tray 1 into and out of the channel 220. The guiding inclined plane 2231 is adopted to facilitate the alignment of the tray 1 and the channel 220. Optionally, each support block 231 is located between two guide ramps 2231. In the tray 1 entrance/exit passage 220, the guiding slope 2231 facilitates guiding the tray 1 between the two pairs of supporting blocks 231, thereby positioning and supporting the tray 1.

In an embodiment provided by the present application, referring to fig. 2, fig. 5 and fig. 6, the carrying mechanism 3 includes a lifting seat 31, a lifting driving assembly 33 and a sliding seat 32, the lifting seat 31 is used for supporting the tray 1, the lifting driving assembly 33 drives the lifting seat 31 to lift, the sliding seat 32 supports the lifting seat 31, the lifting driving assembly 33 is installed on the sliding seat 32, and the sliding seat 32 is installed on the reciprocating driving mechanism 4 in a sliding manner. When the reciprocating drive mechanism 4 drives the conveying mechanism 3 to the lower part of each tray rack 2, the lifting drive assembly 33 can drive the lifting seat 31 to lift, so that the lifting seat 31 is in butt joint with the lower end of the channel 220. The sliding seat 32 slidably supports the lifting seat 31, which is beneficial to ensuring the stability of the lifting seat 31 in the lifting process.

Alternatively, referring to fig. 2, 5 and 6, the lifting seat 31 includes a movable plate 311 and a sliding rod 312, the movable plate 311 is used for carrying the tray 1, and the sliding rod 312 supports the movable plate 311; the sliding seat 32 comprises a support plate 321, a sliding sleeve 322 and a connecting frame 323, the sliding sleeve 322 is fixed on the support plate 321, and the sliding sleeve 322 is slidably sleeved on the sliding rod 312; the movable plate 311 is connected to the elevating driving unit 33, the supporting plate 321 is supported by the connecting frame 323, and the connecting frame 323 is connected to the reciprocating driving mechanism 4. The sliding sleeve 322 is matched with the sliding rod 312 to support the movable plate 311 to move up and down, so as to keep the movable plate 311 stable in the moving up and down process. The lifting driving assembly 33 is installed at the lower side of the supporting plate 321, the sliding sleeve 322 is fixed at the lower side of the supporting plate 321, and the supporting plate 321 supports the movable plate 311 after the movable plate 311 descends onto the supporting plate 321. Alternatively, the slide rods 312 are vertically arranged, and the movable plate 311 and the supporting plate 321 are horizontally arranged, so that the transportation of the tray 1 between the cabinet 22 and the movable plate 311 is facilitated.

Optionally, referring to fig. 5, fig. 6 and fig. 7, two adjacent sides of the supporting plate 321 are respectively provided with two limiting plates 325, the two limiting plates 325 are used for positioning the tray 1, the supporting plate 321 is provided with an ejector 34, and the ejector 34 is used for ejecting the tray 1 toward one corner of the two limiting plates 325. Adopt ejector 34 and two limiting plates 325 cooperation, can push charging tray 1 to two limiting plates 325, realize the location of charging tray 1, the charging tray 1 of being convenient for is at appointed operating position material loading. Optionally, the ejector 34 may also be used to clamp the tray 1, so as to prevent the tray 1 from sliding to affect the taking and placing of the tube seats (or the tube caps, the diodes) on the tray 1 when the carrying mechanism 3 moves or the tube seats (or the tube caps, the diodes) on the tray 1 are taken and placed.

Alternatively, referring to fig. 5, 7 and 9, the ejector 34 includes an ejector block 341 and a second cylinder 342, and the second cylinder 342 drives the ejector block 341 to move. The pushing block 341 is adopted to facilitate the tray 1 to move towards the included angle area of the two limiting plates 325 when the tray 1 is pushed, so as to prevent the tray 1 from deviating. Optionally, an adapting surface 10 matched with the pushing block 341 is provided at one corner of the tray 1, so that the tray 1 can be ensured to move stably when the pusher 34 pushes the tray 1.

Optionally, referring to fig. 5 and fig. 6, the lifting driving assembly 33 includes a rack 333, a gear 332, and a lifting motor 331, where the rack 333 is disposed parallel to the slide rod 312, the gear 332 is engaged with the rack 333, and the lifting motor 331 drives the gear 332 to rotate, so as to drive the rack 333 to lift; the top end of the rack 333 is fixedly connected with the movable plate 311, and the lifting motor 331 is fixed on the connecting frame 323. The gear 332 is meshed with the rack 333, so that the lifting position of the lifting seat 31 can be accurately controlled. Optionally, both sides of the movable plate 311 are provided with a rack 333 and a sliding rod 312, and both ends of the rotating shaft of the lifting motor 331 are provided with gears 332, so that the balanced stress of the lifting seat 31 can be ensured, and the lifting seat 31 can be stably lifted.

In an embodiment of the present application, referring to fig. 1 and fig. 2, the reciprocating driving mechanism 4 includes a sliding rail 41, a screw rod, a nut, and a reciprocating motor 42, the sliding rail 41 slidably supports the carrying mechanism 3, the screw rod is connected to the carrying mechanism 3, the reciprocating motor 42 is configured to drive the screw rod to rotate to drive the carrying mechanism 3 to move, and the screw rod is disposed parallel to the sliding rail 41. Alternatively, the reciprocating motor 42 is a servo motor. The slide rail 41 is adopted for driving, so that the movement position of the carrying mechanism 3 is convenient to control. Optionally, the two tray racks 2 are respectively located above two ends of the sliding rail 41, a sliding block 324 is slidably disposed on the sliding rail 41, the sliding block 324 supports the connecting frame 323 to move, and the screw rod is in threaded fit with the sliding block 324. Set up two charging tray framves 2 at the both ends of slide rail 41, can provide sufficient installation space for charging tray frame 2, the input and the output of the charging tray 1 of being convenient for can make things convenient for manual operation, also can conveniently set up the structure of other storage trays 1.

Referring to fig. 1 to 3, the welding apparatus includes a welding center 200 and the tray conveying device 100 according to any of the embodiments. The welding equipment adopts the material tray conveying device 100, so that the continuous automatic supply of the material trays 1 can be realized, the occupied labor hour is reduced, the automatic material supply of the equipment is promoted, and the production efficiency of products is improved; set up two charging tray frame 2 respectively in the top at the actuating mechanism both ends that resets, avoided two charging tray frame 2 to be close to appointed operating position, the charging tray 1 of being convenient for is packed into and is taken out, and the manual operation of being convenient for is favorable to improve equipment efficiency.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a charging tray conveyor which characterized in that: the automatic feeding and discharging device comprises two material tray frames for storing material trays, a carrying mechanism for conveying the material trays on one material tray frame to an appointed working position and conveying the material trays on the appointed working position to the other material tray frame, a reciprocating driving mechanism for driving the carrying mechanism to reciprocate between the two material tray frames and a rack, wherein the two material tray frames and the reciprocating driving mechanism are both arranged on the rack, the two material tray frames are respectively positioned above two ends of the reciprocating driving mechanism, and the carrying mechanism is arranged on the reciprocating driving mechanism; each tray rack comprises a cabinet for positioning and accommodating the tray, a support for supporting the cabinet and a support assembly for supporting and releasing the tray in the cabinet, a channel for the tray to enter and exit is formed in the bottom of the cabinet, the support is mounted on the rack, and the support assembly is mounted on the support.

2. The tray transport apparatus of claim 1, wherein: and one side of the upper end of the machine cabinet is provided with a slot for the feeding disc to horizontally pass in and out.

3. The tray transport apparatus of claim 2, wherein: the cabinet comprises two side plates arranged oppositely, limit baffles arranged on the side plates respectively and connecting plates arranged at the bottoms of the side plates respectively, wherein the connecting plates are positioned on one side of the corresponding side plates, and the limit baffles are positioned on the other side of the corresponding side plates; the two connecting plates and the corresponding side edges of the two side plates form the slot.

4. The tray transport apparatus of claim 1, wherein: the supporting assembly comprises a supporting block and a first air cylinder driving the supporting block to move towards the machine cabinet; the first air cylinder is installed on the support, and the supporting components are arranged on two sides of the cabinet respectively.

5. The tray transport apparatus of claim 3, wherein: the top and the bottom of the connecting plate are respectively provided with two guide inclined planes for guiding the charging tray to enter and exit the channel.

6. Tray handling unit according to any of claims 1-5, characterized in that: the carrying mechanism comprises a lifting seat for supporting the material tray, a lifting driving assembly for driving the lifting seat to lift and a sliding seat for supporting the lifting seat, the lifting driving assembly is arranged on the sliding seat, and the sliding seat is slidably arranged on the reciprocating driving mechanism.

7. The tray transport apparatus of claim 6, wherein: the lifting seat comprises a movable plate and a sliding rod, the movable plate is used for bearing the charging tray, the sliding rod supports the movable plate, the sliding seat comprises a supporting plate and a sliding sleeve, the sliding sleeve is arranged on the sliding rod, the connecting frame supports the sliding sleeve, the movable plate is connected with the lifting driving assembly, the sliding sleeve is fixed on the supporting plate, and the connecting frame is connected with the reciprocating driving mechanism.

8. The tray transport apparatus of claim 7, wherein: two limiting plates for positioning the charging tray are respectively arranged on two adjacent sides of the supporting plate, and an ejector for ejecting the charging tray towards one corner adjacent to the two limiting plates is arranged on the supporting plate.

9. The tray transport apparatus of claim 8, wherein: the ejector comprises an ejector block and a second air cylinder for driving the ejector block to move.

10. A welding apparatus comprising a welding center, characterized in that: the tray conveying device as claimed in any one of claims 1-9.

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