Workpiece conveying device for coating machine

Abstract

The utility model discloses a workpiece conveying device for a coating machine. The workpiece conveying device comprises a workpiece basket, a feeding and discharging mechanism, a translation mechanism and an overturning and dumping mechanism. According to the workpiece conveying device for the coating machine, when the conveying device is applied to a coating production line, the translation mechanism can receive a workpiece basket output by the coating machine and drive the workpiece basket to translate to the overturning and dumping mechanism, the workpiece basket is overturned by the overturning and dumping mechanism, and a workpiece in the workpiece basket is dumped to heating equipment; a coating machine and heating equipment on a coating production line can be well connected, and the automation degree of the coating production line is improved; by means of the feeding and discharging mechanism, the workpiece baskets can be fed on the overturning and dumping mechanism according to requirements, or the workpiece baskets on the overturning and dumping mechanism can be taken down for discharging.

Description

Technical Field

[0001] This utility model relates to a workpiece conveying device, and more particularly to a workpiece conveying device for a coating machine. Background Technology

[0002] Coating systems typically include coating machines and heating equipment. During the anti-corrosion treatment of workpieces, the coating machine is used to coat the anti-corrosion material onto the surface of the workpiece. Then, workers transfer the coated workpiece to the heating equipment for heating and curing, thereby achieving the anti-corrosion treatment of the workpiece. Throughout the entire process, workers transport baskets into the coating and drying equipment. After the material is coated and dried, workers manually remove the workpiece baskets and transport them to the heating equipment to be unloaded. The entire process has a low degree of automation. Utility Model Content

[0003] Purpose of the utility model: To provide a workpiece conveying device for a coating machine, which can automatically convey and tilt the workpiece basket, and is suitable for the transportation connection between the coating machine and the heating equipment in a coating system.

[0004] Technical solution: The workpiece conveying device for a coating machine provided by this utility model includes a workpiece basket, a loading and unloading mechanism, a translation mechanism, and a tilting and overturning mechanism; the translation mechanism drives the workpiece basket to translate; the tilting and overturning mechanism is installed on the translation mechanism and is used to tilt the workpiece basket; the loading and unloading mechanism is used to load the workpiece basket onto the tilting and overturning mechanism, or to remove the workpiece basket from the tilting and overturning mechanism for unloading.

[0005] Furthermore, the loading and unloading mechanism includes a loading and unloading base, a lifting unit, a rotating unit, and a locking unit; the lifting unit includes a lifting drive motor, a lifting drive tube, a lifting drive screw, and a lifting moving tube; the lifting drive tube is vertically fixed on the loading and unloading base; the lifting moving tube is vertically slidably mounted on the lifting drive tube; the lifting drive screw is used to drive the lifting moving tube to move vertically; the lifting drive motor is used to drive the lifting drive screw to rotate; the rotating unit is mounted on the lifting moving tube, and the locking unit is mounted on the far end of the rotating unit for releasing or grabbing the workpiece basket, and the rotating unit drives the locking unit to rotate.

[0006] Furthermore, the rotating unit includes a rotating drive motor, a rotating outer tube, and a cantilever; the rotating outer tube is coaxially and rotatably mounted on the lifting moving tube; the proximal end of the cantilever is fixed to the vertical side of the rotating outer tube; the rotating drive motor drives the rotating outer tube to rotate relative to the lifting moving tube through a gear ring transmission pair; and a locking unit is mounted on the distal end of the cantilever.

[0007] Furthermore, the locking unit includes a locking drive motor, a locking mounting plate, a double-ended locking screw, and two locking movable seats; the locking mounting plate is fixed to the far end of the rotating unit via a locking connecting tube; the double-ended locking screw is rotatably mounted on the locking mounting plate and is used to drive the two locking movable seats to move relative to each other; the locking drive motor drives the double-ended locking screw to rotate via a locking chain transmission pair; and locking rods for supporting the bucket opening positioning ring of the snap-fit ​​workpiece basket are fixed on the far sides of the two locking movable seats.

[0008] Furthermore, the translation mechanism includes a translation execution plate, a translation drive unit, a clamping unit, and two translation support plates; the translation drive unit includes a translation drive motor and a translation synchronous shaft; the two translation support plates are parallel to each other; the two ends of the translation execution plate are slidably mounted on the two translation support plates; translation guide rails are mounted on both translation support plates; the translation synchronous shaft is rotatably mounted on the translation execution plate, and its two ends are driven to move on the two translation guide rails respectively through translation gear rack pairs; the translation drive motor drives the translation synchronous shaft to rotate through translation gear transmission pairs; several translation support rollers for supporting the barrel opening positioning ring on the workpiece basket are rotatably mounted on the opposite edges of the two translation support plates through translation roller seats; the clamping unit is mounted on the translation execution plate and is used to lock onto the barrel opening positioning ring, so that the workpiece basket and the translation execution plate move synchronously.

[0009] Furthermore, the crimping unit includes a crimping drive motor, a crimping U-shaped seat, a crimping drive screw, a crimping internal threaded tube, and a crimping L-shaped plate; the crimping U-shaped seat is fixed to the translation execution plate via a cantilever plate; the crimping internal threaded tube slides vertically through the cantilever plate, and its lower end is fixed to the crimping L-shaped plate; the crimping drive screw is rotatably mounted on the crimping U-shaped seat and is used to drive the crimping internal threaded tube to move vertically; the crimping drive motor is used to drive the crimping drive screw to rotate; a crimping protrusion is provided on the crimping L-shaped plate; two crimping holes for inserting the crimping protrusion are provided on the positioning ring at the opening of the workpiece basket.

[0010] Furthermore, the tilting mechanism includes a tilting drive motor, a tilting drive shaft, a tilting U-shaped seat, an arc-shaped enclosure, and two tilting latching strips. The tilting U-shaped seat is rotatably mounted on two translational support plates via two tilting mounting seats. The tilting drive shaft is mounted on the tilting U-shaped seat. The tilting drive motor drives the tilting drive shaft to rotate via a tilting chain transmission pair. The two tilting latching strips are fixed parallel to each other on the tilting U-shaped seat. Parallel edges are provided on both sides of the outer circumferential edge of the positioning ring at the opening of the workpiece basket. The two parallel edges are used to insert latches onto the two tilting latching strips. The arc-shaped enclosure is fixed on the tilting U-shaped seat and is used to support the circumferential side of the workpiece basket during tilting, so that the opening of the workpiece basket is lower than the bottom of the basket.

[0011] Compared with the prior art, the advantages of this utility model are as follows: When the conveying device is applied to the coating production line, the translation mechanism can pick up the workpiece basket output by the coating machine and drive the workpiece basket to the tilting mechanism. The tilting mechanism then tilts the workpiece basket and pours the workpieces in the basket onto the heating equipment. This can better connect the coating machine and the heating equipment on the coating production line and improve the automation level of the coating production line. The loading and unloading mechanism can load the workpiece basket onto the tilting mechanism or remove the workpiece basket from the tilting mechanism for unloading as needed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the loading and unloading mechanism of this utility model;

[0014] Figure 3 This is a schematic diagram of the installation of the clamping unit of this utility model;

[0015] Figure 4 This is a top view of the flip-up U-shaped base of this utility model;

[0016] Figure 5 This is a top view of the locking unit of this utility model;

[0017] In the diagram: 201, translation support plate; 202, translation foot; 203, tilting drive shaft; 204, arc-shaped enclosure; 205, tilting U-shaped seat; 206, tilting buckle strip; 207, tilting drive motor; 208, translation roller seat; 209, translation support roller; 210, translation slide rail; 211, translation U-shaped seat; 212, translation traveling wheel; 213, translation synchronous shaft; 214, translation guide rail; 215, translation drive motor; 216, clamping drive motor; 217, clamping U-shaped seat; 218, clamping drive screw; 219, clamping internal thread tube; 221, translation actuator plate; 222, clamping L-shaped plate; 223, clamping protrusion;

[0018] 301. Loading / unloading base; 302. Lifting drive tube; 303. Lifting guide hole; 304. Lifting drive screw; 305. Lifting moving tube; 306. Lifting drive motor; 307. Rotating outer tube; 308. Rotating drive motor; 309. Cantilever; 310. Locking connecting tube; 311. Locking mounting plate; 312. Locking drive motor; 313. Double-headed locking screw; 314. Locking moving seat; 315. Locking mounting seat; 316. Locking rod;

[0019] 6. Workpiece basket; 601. Bucket opening positioning ring; 602. Crimping hole. Detailed Implementation

[0020] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of this utility model is not limited to the described embodiments.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] In the description of this utility model, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example 1:

[0024] like Figure 1-5 As shown, the present invention provides a workpiece conveying device for a coating machine, comprising: a workpiece basket 6, a loading and unloading mechanism, a translation mechanism, and a tilting mechanism; the translation mechanism drives the workpiece basket 6 to translate; the tilting mechanism is installed on the translation mechanism and is used to tilt the workpiece basket 6; the loading and unloading mechanism is used to load the workpiece basket 6 onto the tilting mechanism, or to remove the workpiece basket 6 from the tilting mechanism for unloading; a plurality of liquid outlet holes are provided on the vertical sidewalls and bottom of the workpiece basket 6.

[0025] When the conveying device is applied to the coating production line, the translation mechanism can pick up the workpiece basket 6 output by the coating machine and drive the workpiece basket 6 to the tilting mechanism. The tilting mechanism then tilts the workpiece basket 6 and pours the workpieces inside onto the heating equipment. This can better connect the coating machine and the heating equipment on the coating production line and improve the automation level of the coating production line. The loading and unloading mechanism can load the workpiece basket 6 onto the tilting mechanism or remove the workpiece basket 6 from the tilting mechanism for unloading as needed.

[0026] Furthermore, the loading and unloading mechanism includes a loading and unloading base 301, a lifting unit, a rotating unit, and a locking unit; the lifting unit includes a lifting drive motor 306, a lifting drive tube 302, a lifting drive screw 304, and a lifting moving tube 305; the lower end of the lifting drive tube 302 is fixed on the loading and unloading base 301; the lifting moving tube 305 is vertically slidably sleeved on the lifting drive tube 302; a lifting guide hole 303 is vertically provided on the lifting drive tube 302; a lifting moving block is vertically slidably installed on the lifting drive tube 302, with its end penetrating the lifting guide hole 303 and fixed to the inner wall of the lifting moving tube 305; the lifting drive screw 304 is rotatably vertically installed inside the lifting drive tube 302 and threadedly inserted through the lifting moving block; the lifting drive motor 306 is used to drive the lifting drive screw 304 to rotate; the rotating unit is installed on the lifting moving tube 305, and the locking unit is installed on the rotating unit, used to release or grab the workpiece basket 6, and the rotating unit drives the locking unit to rotate.

[0027] The lifting drive motor 306 drives the lifting drive screw 304 to rotate, which causes the lifting moving block to move the lifting moving tube 305 vertically, thereby realizing the height adjustment of the rotating unit and the locking unit.

[0028] Furthermore, the rotating unit includes a rotating drive motor 308, a rotating outer tube 307, and a cantilever 309; the rotating outer tube 307 is coaxially rotatably mounted on the lifting moving tube 305; the proximal end of the cantilever 309 is fixed to the vertical side of the rotating outer tube 307; the rotating drive motor 308 drives the rotating outer tube 307 to rotate relative to the lifting moving tube 305 through a gear ring transmission pair; and a locking unit is installed on the distal end of the cantilever 309.

[0029] The rotary drive motor 308 drives the rotating outer tube 307 to rotate relative to the lifting moving tube 305, thereby causing the cantilever 309 to swing, thus adjusting the horizontal position of the locking unit.

[0030] Furthermore, the locking unit includes a locking drive motor 312, a locking mounting plate 311, a double-ended locking screw 313, and two locking movable seats 314; the locking mounting plate 311 is fixed to the far end of the cantilever 309 via a locking connecting tube 310; both ends of the double-ended locking screw 313 are rotatably mounted on the upper side of the locking mounting plate 311 via locking mounting seats 315, and the two sides of the double-ended locking screw 313 are threadedly threaded through the two locking movable seats 314 respectively; the locking drive motor 312 drives the double-ended locking screw 313 to rotate via a locking chain transmission pair; a locking rod 316 is laterally fixed on each locking movable seat 314, slidingly penetrating the corresponding side locking mounting seat 315; a barrel opening positioning ring 601 is coaxially fixed at the upper barrel opening of the workpiece basket 6; the locking rods 316 on both sides are used to extend into the workpiece basket 6 and support the lower side of the barrel opening positioning ring 601.

[0031] The locking drive motor 312 drives the double-headed locking screw 313 to rotate, causing the two locking moving seats 314 to move closer or further apart. This causes the locking rods 316 on the two locking moving seats 314 to move closer or further apart. When the locking mounting plate 311 extends into the workpiece basket 6, the locking rods 316 on both sides move closer to each other. After the locking mounting plate 311 extends into the workpiece basket 6, the locking rods 316 on both sides move further apart, and their ends are supported on the lower side of the barrel opening positioning ring 601, thereby realizing the gripping or release of the workpiece basket 6.

[0032] Furthermore, the translation mechanism includes a translation execution plate 221, a translation drive unit, a clamping unit, and two translation support plates 201; the translation drive unit includes a translation drive motor 215 and a translation synchronous shaft 213; multiple translation feet 202 are provided on the lower side of each of the two translation support plates 201, and the two translation support plates 201 are parallel to each other; translation slide rails 210 are provided along the length direction on the upper side of each of the two translation support plates 201; translation U-shaped seats 211 are provided at both ends of the lower side of the translation execution plate 221; multiple translation wheels 212 are rotatably installed in the translation U-shaped seats 211; the translation wheels 212 of the two translation U-shaped seats 211 travel on the two translation slide rails 210 respectively;

[0033] Translation guide rails 214 are installed along the length direction on the upper side of the two translation support plates 201; the translation synchronous shaft 213 is rotatably installed on the translation execution plate 221, and its two ends are driven to move on the two translation guide rails 214 respectively through translation gear rack pairs; the translation drive motor 215 drives the translation synchronous shaft 213 to rotate through the translation gear transmission pair.

[0034] Translation roller seats 208 are fixed on the opposite edges of the upper sides of the two translation support plates 201; several translation support rollers 209 for supporting the barrel opening positioning ring 601 are rotatably installed at intervals on the opposite sides of the two translation roller seats 208; the clamping unit is installed on the translation execution plate 221 and is used to lock on the barrel opening positioning ring 601, so that the workpiece basket 6 moves synchronously with the translation execution plate 221.

[0035] By utilizing the cooperation between the translation slide rail 210, the translation U-shaped seat 211, and the translation traveling wheel 212, the friction of the translation execution plate 221 is reduced, and the movement stability of the translation execution plate 221 is improved. The translation drive motor 215 drives the translation synchronous shaft 213 to rotate, so that the translation synchronous shaft 213 moves along the two translation guide rails 214 through the translation gear rack pair, thereby driving the clamping unit and the workpiece basket 6 to move.

[0036] Furthermore, the clamping unit includes a clamping drive motor 216, a clamping U-shaped seat 217, a clamping drive screw 218, a clamping internal threaded tube 219, and a clamping L-shaped plate 222; a cantilever plate is suspended in the middle of the upper side of the translation execution plate 221; the clamping U-shaped seat 217 is fixed on the cantilever plate; the upper end of the clamping drive screw 218 is rotatably mounted on the clamping U-shaped seat 217, and the lower end is threaded onto the clamping internal threaded tube 219; the clamping drive motor 216 is used to drive the clamping drive screw 218 to rotate; the clamping internal threaded tube 219 slides vertically through the cantilever plate, and its lower end is fixed on the horizontal plate of the clamping L-shaped plate 222; a clamping protrusion 223 is provided on the lower side of the horizontal plate of the clamping L-shaped plate 222; two clamping holes 602 for inserting the clamping protrusion 223 are provided on the barrel mouth positioning ring 601.

[0037] The clamping drive motor 216 drives the clamping drive screw 218 to rotate, causing the clamping internal thread tube 219 to drive the clamping L-shaped plate 222 to move vertically, so that the clamping protrusion 223 is inserted into one of the clamping holes 602. The vertical plate of the clamping L-shaped plate 222 is supported on the barrel opening positioning ring 601, so that the translation drive unit can push and pull the workpiece basket 6 when moving, realizing translation drive.

[0038] Furthermore, the tilting mechanism includes a tilting drive motor 207, a tilting drive shaft 203, a tilting U-shaped seat 205, an arc-shaped enclosure 204, and two tilting latching strips 206; tilting mounting seats are fixedly mounted on the lower sides of the two translational support plates 201; the two parallel seat plates of the tilting U-shaped seat 205 are rotatably mounted on the two tilting mounting seats respectively via the tilting mounting shaft; the tilting drive shaft 203 is fixedly connected to one of the tilting mounting shafts; the tilting drive motor 207 drives the tilting drive shaft 203 to rotate via a tilting chain transmission pair; the two tilting latching strips 206 are respectively fixed on the upper edges of the two parallel seat plates of the tilting U-shaped seat 205; the two tilting latching strips 206 are ... The buckle strip 206 has flip-out buckle slots on its opposite sides, and the height of the buckle slots is the same as the height of the upper edge of the translation support roller 209. Parallel edges are provided on both sides of the outer circumference of the barrel opening positioning ring 601. The two parallel edges of the barrel opening positioning ring 601 are used to insert and buckle into the two flip-out buckle slots. When the parallel edges of the barrel opening positioning ring 601 are inserted into the flip-out buckle slots, the buckling protrusion 223 can be inserted into one of the buckling holes 602. The arc-shaped enclosure 204 is connected and fixed to the two parallel seat plates of the flip-out U-shaped seat 205, and is used to support the circumference of the workpiece basket 6 during flipping, so that the barrel opening of the workpiece basket 6 is lower than the barrel bottom.

[0039] The flip drive motor 207 drives the flip U-shaped seat 205 to rotate a certain range through the flip drive shaft 203. The arc-shaped enclosure 204 supports the workpiece basket 6, so that the opening of the workpiece basket 6 is lower than the bottom of the basket, and the workpieces in the workpiece basket 6 can fall to the next process flow. The height of the buckle slot is the same as the height of the upper edge of the translation support roller 209, so that the translation mechanism can smoothly drive the workpiece basket 6 in and out of the flip tilting mechanism.

[0040] In the workpiece conveying device for coating machine provided by this utility model, the flipping drive motor 207, the translation drive motor 215, the pressing drive motor 216, the lifting drive motor 306, the rotation drive motor 308, and the locking drive motor 312 all adopt existing stepper motors.

[0041] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A workpiece conveying device for a coating machine, characterized in that: It includes a workpiece basket (6), a loading and unloading mechanism, a translation mechanism, and a tilting mechanism; the translation mechanism drives the workpiece basket (6) to translate; the tilting mechanism is installed on the translation mechanism and is used to tilt the workpiece basket (6) to tilt; the loading and unloading mechanism is used to load the workpiece basket (6) onto the tilting mechanism, or to remove the workpiece basket (6) from the tilting mechanism for unloading.

2. The workpiece conveying device for a coating machine according to claim 1, characterized in that: The loading and unloading mechanism includes a loading and unloading base (301), a lifting unit, a rotating unit, and a locking unit; the lifting unit includes a lifting drive motor (306), a lifting drive tube (302), a lifting drive screw (304), and a lifting moving tube (305); the lifting drive tube (302) is vertically fixed on the loading and unloading base (301); the lifting moving tube (305) is vertically slidably mounted on the lifting drive tube (302); the lifting drive screw (304) is used to drive the lifting moving tube (305) to move vertically; the lifting drive motor (306) is used to drive the lifting drive screw (304) to rotate; the rotating unit is mounted on the lifting moving tube (305), and the locking unit is mounted on the far end of the rotating unit for releasing or grabbing the workpiece basket (6), and the rotating unit drives the locking unit to rotate.

3. The workpiece conveying device for a coating machine according to claim 2, characterized in that: The rotating unit includes a rotary drive motor (308), a rotating outer tube (307), and a cantilever (309); the rotating outer tube (307) is coaxially rotatably mounted on the lifting moving tube (305); the proximal end of the cantilever (309) is fixed on the vertical side of the rotating outer tube (307); the rotary drive motor (308) drives the rotating outer tube (307) to rotate relative to the lifting moving tube (305) through a gear ring transmission pair; the locking unit is mounted on the distal end of the cantilever (309).

4. The workpiece conveying device for a coating machine according to claim 2, characterized in that: The locking unit includes a locking drive motor (312), a locking mounting plate (311), a double-headed locking screw (313), and two locking moving seats (314); the locking mounting plate (311) is fixed to the far end of the rotating unit through a locking connecting tube (310); the double-headed locking screw (313) is rotatably mounted on the locking mounting plate (311) and is used to drive the two locking moving seats (314) to move relative to each other; the locking drive motor (312) drives the double-headed locking screw (313) to rotate through a locking chain transmission pair; a locking rod (316) for supporting the barrel mouth positioning ring (601) of the snap-fit ​​workpiece basket (6) is fixed on the far side of each of the two locking moving seats (314).

5. The workpiece conveying device for a coating machine according to claim 1, characterized in that: The translation mechanism includes a translation actuator plate (221), a translation drive unit, a clamping unit, and two translation support plates (201); the translation drive unit includes a translation drive motor (215) and a translation synchronous shaft (213); the two translation support plates (201) are parallel to each other; the two ends of the translation actuator plate (221) are slidably mounted on the two translation support plates (201); translation guide rails (214) are mounted on both translation support plates (201); the translation synchronous shaft (213) is rotatably mounted on the translation actuator plate (221), and its two ends are connected by translation teeth. The rack and pinion pairs move on two translation guide rails (214) respectively; the translation drive motor (215) drives the translation synchronous shaft (213) to rotate through the translation gear transmission pair; several translation support rollers (209) for supporting the barrel mouth positioning ring (601) on the opposite edges of the two translation support plates (201) are rotatably installed through translation roller seats (208); the clamping unit is installed on the translation execution plate (221) and is used to lock on the barrel mouth positioning ring (601) so that the workpiece basket (6) moves synchronously with the translation execution plate (221).

6. The workpiece conveying device for a coating machine according to claim 5, characterized in that: The crimping unit includes a crimping drive motor (216), a crimping U-shaped seat (217), a crimping drive screw (218), a crimping internal threaded tube (219), and a crimping L-shaped plate (222); the crimping U-shaped seat (217) is fixed to the translation execution plate (221) via a cantilever plate; the crimping internal threaded tube (219) slides vertically through the cantilever plate, and its lower end is fixed to the crimping L-shaped plate (222); the crimping drive screw ( 218) Rotatably mounted on the crimping U-shaped seat (217) for driving the crimping internal thread tube (219) to move vertically; crimping drive motor (216) for driving the crimping drive screw (218) to rotate; crimping protrusions (223) are provided on the crimping L-shaped plate (222); two crimping holes (602) for inserting the crimping protrusions (223) are provided on the barrel mouth positioning ring (601) of the workpiece basket (6).

7. The workpiece conveying device for a coating machine according to claim 6, characterized in that: The tilting mechanism includes a tilting drive motor (207), a tilting drive shaft (203), a tilting U-shaped seat (205), an arc-shaped enclosure (204), and two tilting buckle strips (206). The tilting U-shaped seat (205) is rotatably mounted on two translational support plates (201) via two tilting mounting seats. The tilting drive shaft (203) is mounted on the tilting U-shaped seat (205). The tilting drive motor (207) drives the tilting drive shaft (203) via a tilting chain transmission pair. Rotation; two flip-up buckle strips (206) are fixed in parallel on the flip-up U-shaped base (205); parallel edges are provided on both sides of the outer circumference of the positioning ring (601) at the mouth of the workpiece basket (6); the two parallel edges are respectively used to insert buckles on the two flip-up buckle strips (206); the arc-shaped enclosure (204) is fixed on the flip-up U-shaped base (205) and is used to support the circumferential side of the workpiece basket (6) when flipping, so that the mouth of the workpiece basket (6) is lower than the bottom of the bucket.

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