A disc automatic swinging device for a thermal protector assembly and a swinging process thereof

Abstract

The present invention relates to an automatic disk swinging device of a thermal protector assembly, comprising a first bracket and a second bracket, a first slide rail is mounted on the top of the first bracket, a swinging mechanism, a lifting mechanism and a disk transporting mechanism are mounted on the top of the first slide rail, the swinging mechanism comprises a tray clamping assembly, a material discharge assembly and a translation assembly, the lifting mechanism comprises a second frame, a second support plate, a second lifting assembly and a support block assembly, and the disk transporting mechanism comprises a first support plate, a first frame, a first lifting assembly and a tray separation assembly. The automatic disk swinging device of the thermal protector assembly has the advantages of improving discharge efficiency, facilitating positioning, improving conveying stability, facilitating tray collection and support, facilitating automatic unloading, and improving conveying accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of thermal protector assembly plate swinging, in particular to an automatic plate swinging device of a thermal protector assembly and a plate swinging process thereof. Background Art

[0002] In the mass production of small workpieces, manual operation is inefficient. Operators are prone to motion fatigue and it is difficult to ensure the consistency of the product direction after the plate is placed. At the same time, the labor cost is relatively high. When the plate is placed manually, the proficiency and fatigue of the operator have a significant impact on the effect of the plate placement, and it is difficult to achieve automated operation.

[0003] For this reason, we have developed a disc automatic swing device for a thermal protector assembly to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a disc automatic swinging device for a thermal protector assembly and a swinging process thereof, which has the advantages of improving discharge efficiency, facilitating positioning, improving conveying stability, facilitating pallet collection and support, facilitating automatic unloading, and improving conveying accuracy.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic disc swinging device of a thermal protector assembly, comprising a first bracket and a second bracket mounted at one end of the first bracket, a first slide rail is mounted at the top end of the first bracket, a first drive motor is mounted at one end of the first slide rail, a second slide rail is mounted at the top end of the second bracket, a second drive motor is mounted at one end of the second slide rail, the first slide rail is vertically arranged with the second slide rail, a swinging mechanism, a top plate mechanism and a plate transport mechanism are sequentially mounted at the top end of the first slide rail, and the swinging mechanism is arranged at the lower side of the second slide rail;

[0006] The plate swing mechanism includes a tray clamping assembly, a material discharging assembly and a translation assembly, wherein the tray clamping assembly includes a layer of trays, the tray clamping assembly is arranged at the top end of the first slide rail, the translation assembly is arranged at the top end of the second bracket, and the material discharging assembly is arranged at one side of the translation assembly, and the material discharging assembly transports the thermal protector assembly to the tray;

[0007] The tray transport mechanism comprises two first support plates arranged in parallel, a first quadrangular prism-shaped frame, two first lifting assemblies and a plurality of tray separation assemblies, wherein the first support plate is mounted in the first frame and arranged in parallel with the first slide rail, the first lifting assembly is arranged at the bottom end of the first frame and connected to the first bracket, the tray separation assembly is arranged on the inner wall of the first frame, and the tray separation assembly, the first support plate, the tray separation assembly and the first support plate are sequentially arranged on the inner wall of the first frame;

[0008] The lifting mechanism includes a quadrangular prism-shaped second frame, two second support plates arranged in parallel, two second lifting assemblies and a plurality of support block assemblies, wherein the support block assemblies are arranged on the inner wall of the second frame, the second lifting assembly is arranged at the bottom end of the second frame and connected to the first bracket, and the second support plate is arranged on the inner side of the second frame and connected to the first bracket;

[0009] A plurality of second U-shaped grooves are provided at the bottom end of the first slide rail, a W-shaped groove and a cross groove are provided on the side wall of the first slide rail, the W-shaped groove is arranged on the upper side of the cross groove, an arc-shaped cover plate is provided at the top end of the first slide rail, a corrugated groove is provided at the bottom end of the arc-shaped cover plate, a circular groove is provided on each side of the corrugated groove, and a bow-shaped slider is provided between the corrugated groove and the first slide rail.

[0010] Preferably, the tray clamping assembly also includes two U-shaped groove plates, a hollow bottom plate and a plurality of abutment blocks, a first U-shaped groove is provided at the bottom end of the bottom plate, a plurality of abutment holes are respectively provided at both ends of the bottom plate, a plurality of connecting holes are provided at the top end of the bottom plate, the U-shaped groove plate is arranged on both sides of the bottom plate, the U-shaped groove plate, the first support plate and the second support plate are arranged in parallel, the abutment blocks are connected to the abutment holes, and the tray abuts against the U-shaped groove plate and the abutment blocks respectively.

[0011] Preferably, the distance from the top of the first support plate to the bottom of the first bracket is A, the distance from the top of the second support plate to the bottom of the first bracket is B, the distance from the top of the U-shaped groove plate to the bottom of the first bracket is C, and the distance A=B, and the distance B <C。

[0012] Preferably, the discharge assembly includes a side plate, two vertical discharge cylinders are provided at one side of the side plate, and a suction joint is provided at the bottom end of the discharge cylinder.

[0013] Preferably, the translation assembly includes a convex slider, which is connected to the side plate, and is arranged on a side away from the discharge cylinder. The slider is slidingly connected to one side of the second slide rail, and a limit sensor is respectively provided at both ends of the second slide rail, and a drag chain is provided at the other side of the second slide rail.

[0014] Preferably, the plate dividing assembly comprises a plurality of L-shaped support plates, a shovel head is horizontally inserted into the side wall of the L-shaped support plate, a convex notch is provided at one end of the shovel head, and an arc opening is provided at the other end, a plurality of cylinder fixing holes are provided at the bottom end of the L-shaped support plate, and a plurality of support plate fixing holes are provided on the side wall, a horizontal cylinder is connected to the top end of the cylinder fixing hole, the horizontal cylinder is connected to the notch, and the support plate fixing hole is connected to the first frame.

[0015] Preferably, the first lifting assembly includes at least one first lifting cylinder, a first top plate is provided at the top of the first lifting cylinder, at least one first rectangular hole and at least one second rectangular hole are provided at the top of the first bracket, the first rectangular hole is arranged at the bottom end of the first frame, the second rectangular hole is arranged at the bottom end of the second frame, and the first lifting cylinder is connected to the first rectangular hole via a connecting plate.

[0016] Preferably, the support block assembly includes a wedge block and a groove-shaped wedge seat, the side wall of the wedge seat in the length direction is provided with a through hole, the side wall of the wedge seat in the width direction is provided with a bracket fixing hole, the wedge block is passed through the through hole through a pin shaft, and the bracket fixing hole is connected to the second frame.

[0017] Preferably, the second lifting assembly includes at least one second lifting cylinder, the second lifting cylinder is fixedly connected to the second rectangular hole, and a second top plate is provided at the top end of the second lifting cylinder.

[0018] Preferably, a disc swinging process of an automatic disc swinging device of a thermal protector assembly, using the automatic disc swinging device of the thermal protector assembly, comprises the following steps in sequence:

[0019] 1.1 The first lifting assembly pushes the pallet to the tray separation assembly, the tray separation assembly lifts the pallet through the shovel head and separates the pallets, the pallet clamping assembly moves to the bottom end of the first frame through the first slide rail, a pallet is placed in the pallet clamping assembly and transported to the lower side of the second slide rail through the first drive motor;

[0020] 1.2 The unloading assembly sucks the two thermal protector assemblies on the disc, and under the drive of the second driving motor, the translation assembly places the thermal protector assemblies into the tray at the lower side of one end of the second slide rail;

[0021] 1.3 After the tray is filled with thermal protector components, the first drive motor transports the tray to the bottom end of the second frame through the first slide rail;

[0022] 1.4 The second lifting assembly lifts the pallet, the support block assembly retracts into the second frame, the second lifting assembly descends, and the support block assembly falls under the action of gravity and supports the pallet;

[0023] 1.5 Repeat steps 1.1 to 1.4.

[0024] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0025] 1. The discharge component is equipped with two suction joints, each of which absorbs a thermal protection component, which improves the discharge efficiency of the thermal protection component and improves productivity;

[0026] 2. The U-shaped groove plate and the abutment block are respectively abutted against the tray, which facilitates the positioning of the tray and improves the stability of the thermal protection component during transportation;

[0027] 3. The tray rises to lift up the wedge-shaped block, which then falls down by its own weight to support the tray. The structure is simple and convenient for collecting trays.

[0028] 4. The two shovel heads are staggered up and down and controlled by a horizontal cylinder to facilitate unloading of one layer of pallets, realize automatic unloading and improve productivity;

[0029] 5. The first slide rail is slidably connected with the bow-shaped slide block, and the arc-shaped cover plate, W-shaped groove and cross groove are arranged to improve the accuracy of pallet transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Attached Figure 1 A three-dimensional diagram of the automatic disk swinging device of the thermal protector assembly of the present invention;

[0031] Attached Figure 2 It is a front view of the automatic disk swinging device of the thermal protector assembly of the present invention;

[0032] Attached Figure 3 It is a rear view of the automatic disk swinging device of the thermal protector assembly of the present invention;

[0033] Attached Figure 4 It is a structural schematic diagram of the bottom ends of the first lifting cylinder and the second lifting cylinder of the present invention;

[0034] Attached Figure 5 is a schematic diagram of the connection structure of the first slide rail of the present invention;

[0035] Attached Figure 6 It is a structural schematic diagram of the bottom plate of the present invention;

[0036] Attached Figure 7 It is a structural schematic diagram of the support block assembly of the present invention;

[0037] Attached Figure 8 It is a schematic structural diagram of the disc separation assembly of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Attached Figure 1 To Attachment Figure 4 In the invention, a disk automatic swinging device of a thermal protector assembly includes a first bracket 10 and a second bracket 30 mounted at one end of the first bracket 10. A first slide rail 11 is mounted at the top of the first bracket 10, and a first drive motor 12 is mounted at one end of the first slide rail 11. A second slide rail 31 is mounted at the top of the second bracket 30, and a second drive motor 32 is mounted at one end of the second slide rail 31. The first slide rail 11 and the second slide rail 31 are arranged vertically. A swinging mechanism 7, a top plate mechanism 6 and a plate transport mechanism 5 are mounted on the top of the first slide rail 11 in sequence, and the swinging mechanism 7 is arranged on the lower side of the second slide rail 31. A first limit sensor 115 and a second limit sensor 116 are respectively arranged on the side walls at both ends of the first slide rail 11, and the second limit sensor 116 is arranged close to the second bracket 30.

[0040] The tray swing mechanism 7 includes a tray clamping assembly, a material discharging assembly and a translation assembly. The tray clamping assembly includes a tray 100, a heat protector assembly placement slot is arranged in the tray 100, the tray clamping assembly is arranged at the top of the first slide rail 11, the translation assembly is arranged at the top of the second bracket 30, and a material discharging assembly is arranged at one side of the translation assembly, and the material discharging assembly transports the heat protector assembly to the tray 100.

[0041] The discharge assembly comprises a side plate 40. Two vertical discharge cylinders 41 are provided on one side of the side plate 40, and a suction joint 42 is provided at the bottom end of the discharge cylinder 41.

[0042] The translation assembly includes a convex slider 35. The slider 35 is connected to the side plate 40, and the slider 35 is arranged on a side away from the discharge cylinder 41. The slider 35 is slidably connected to one side of the second slide rail 31. A limit sensor 34 is respectively arranged at both ends of the second slide rail 31, and a drag chain 33 is arranged at the other side of the second slide rail 31.

[0043] The disk transporting mechanism 5 includes two first support plates 105 arranged in parallel, a first frame 15 in the shape of a quadrangular prism, two first lifting assemblies and multiple disk separating assemblies. The first support plate 105 is erected inside the first frame 15 and is arranged parallel to the first slide rail 11. The first lifting assemblies are arranged at the bottom end of the first frame 15 and are connected to the first support 10. The disk separating assemblies are arranged on the inner wall of the first frame 15. The disk separating assemblies, the first support plate 105, the disk separating assemblies and the first support plate 105 are sequentially arranged around the inner wall of the first frame 15.

[0044] The first lifting assembly includes at least one first lifting cylinder 19. At the top end of the first lifting cylinder 19, there is a first top plate 191. At the top end of the first support 10, there are at least one first rectangular hole 101 and at least one second rectangular hole 102. The first rectangular hole 101 is arranged at the bottom end of the first frame 15, and the second rectangular hole 102 is arranged at the bottom end of the second frame 25. The first lifting cylinder 19 and the first rectangular hole 101 are connected by a connecting plate.

[0045] The top disk mechanism 6 includes a second frame 25 in the shape of a quadrangular prism, two second support plates 205 arranged in parallel, two second lifting assemblies and multiple support block assemblies. The support block assemblies are arranged on the inner wall of the second frame 25. The second lifting assemblies are arranged at the bottom end of the second frame 25 and are connected to the first support 10. The second support plates 205 are arranged inside the second frame 25 and are connected to the first support 10.

[0046] The second lifting assembly includes at least one second lifting cylinder 29. The second lifting cylinder 29 is fixedly connected to the second rectangular hole 102, and at the top end of the second lifting cylinder 29, there is a second top plate 291.

[0047] The distance from the top end of the first support plate 105 to the bottom end of the first support 10 is A, the distance from the top end of the second support plate 205 to the bottom end of the first support 10 is B, and the distance from the top end of the U-shaped groove plate 505 to the bottom end of the first support 10 is C. The distance A = B, and the distance B < C. The distance from the bottom of the U-shaped groove of the U-shaped groove plate 505 to the bottom end of the first support 10 is equal to the distance A.

[0048] Appendix Figure 5 In the figure, at the bottom end of the first slide rail 11, there are multiple second U-shaped grooves 113. On the side wall of the first slide rail 11, there is a W-shaped groove 111 and a cross-shaped groove 112. The W-shaped groove 111 is arranged above the cross-shaped groove 112. At the top end of the first slide rail 11, there is an arc-shaped cover plate 14. At the bottom end of the arc-shaped cover plate 14, there is a corrugated groove 141. On both sides of the corrugated groove 141, there is a circular groove 142 each. Between the corrugated groove 141 and the first slide rail 11, there is a bow-shaped slider 13.

[0049] Appendix Figure 6In the embodiment, the tray clamping assembly further includes two U-shaped groove plates 505, a hollow bottom plate 51 and a plurality of abutment blocks 52. A first U-shaped groove 511 is provided at the bottom end of the bottom plate 51, a plurality of abutment holes 512 are provided at both ends of the bottom plate 51, a plurality of connection holes 513 are provided at the top end of the bottom plate 51, the U-shaped groove plates 505 are arranged on both sides of the bottom plate 51, the U-shaped groove plates 505, the first support plate 105 and the second support plate 205 are arranged in parallel, the abutment blocks 52 are connected to the abutment holes 512, and the tray 100 abuts against the U-shaped groove plates 505 and the abutment blocks 52 respectively.

[0050] Attached Figure 7 In the embodiment, the support block assembly includes a wedge block 27 and a groove-shaped wedge seat 26. A notch 265 is provided at the center of the wedge seat 26, a through hole 261 is provided on the side wall in the length direction of the wedge seat 26, and a bracket fixing hole 262 is provided on the side wall in the width direction of the wedge seat 26. The wedge block 27 is arranged in the notch 265 and penetrates the through hole 261 through a pin shaft, and the bracket fixing hole 262 is connected to the second frame 25.

[0051] Attached Figure 8 In the figure, the tray dividing assembly includes a plurality of L-shaped support plates 71, a shovel head 17 is horizontally inserted on the side wall of the L-shaped support plate 71, a strip-shaped opening 16 is provided on the side wall of the first frame 15, the shovel head 17 is inserted in the strip-shaped opening 16, two shovel heads 17 arranged at different heights are provided on the side wall of the first frame 15, the spacing between the two shovel heads 17 is the spacing between the stacked layers of the tray 100, the time for dividing the tray 100 is 0.5s, a convex notch 172 is provided at one end of the shovel head 17, and an arc opening 171 is provided at the other end, a plurality of cylinder fixing holes 711 are provided at the bottom end of the L-shaped support plate 71, and a plurality of support plate fixing holes 712 are provided on the side wall, a horizontal cylinder 18 is connected to the top end of the cylinder fixing hole 711, the horizontal cylinder 18 is connected to the notch 172, and the support plate fixing hole 712 is connected to the first frame 15.

[0052] A disc swinging process of an automatic disc swinging device of a thermal protector assembly, using the automatic disc swinging device of the thermal protector assembly, comprises the following steps in sequence:

[0053] 1.1 The first lifting cylinder 19 pushes a stack of empty pallets 100 to the shovel head 17, and the four horizontal cylinders 18 on the upper and lower layers extend the arc openings 171 of their shovel heads 17. The four arc openings 171 fork up a pallet 100 on the bottom layer. At the same time, the horizontal cylinder 18 on the lower layer retracts its shovel head 17, and the pallet 100 on the bottom layer falls down. Under the action of the first driving motor 12, the bottom plate 51 is driven by the bow-shaped slider 13 to move to the bottom end of the first frame 15, and a pallet 100 is placed between the abutment blocks 52 and transported to the U-shaped groove plate 505 by the first driving motor 12.

[0054] 1.2 The two discharge cylinders 41 drive the corresponding suction joints 42 to simultaneously suck the two thermal protector assemblies on the disc, and the slider 35, driven by the second drive motor 32, places the thermal protector assemblies into the tray 100 on the lower side of one end of the second slide rail 31.

[0055] 1.3 After each tray 100 is filled with thermal protector assemblies, the first drive motor 12 transports the tray 100 to the bottom end of the second frame 25 via the bow-shaped slider 13 .

[0056] 1.4 The second lifting cylinder 29 lifts up the pallet 100, and the movable wedge block 27 retracts into the wedge seat 26 under the action of the pallet 100. The wedge block 27 falls down under the action of gravity and exposes the wedge seat 26. The second lifting cylinder 29 falls down, and the wedge block 27 supports the pallet 100 filled with thermal protector components.

[0057] 1.5 Repeat steps 1.1 to 1.4.

[0058] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A disc automatic swinging device for a thermal protector assembly, characterized in that: The invention comprises a first bracket and a second bracket mounted at one end of the first bracket, a first slide rail is mounted at the top end of the first bracket, a first drive motor is mounted at one end of the first slide rail, a second slide rail is mounted at the top end of the second bracket, a second drive motor is mounted at one end of the second slide rail, the first slide rail and the second slide rail are vertically arranged, a swing plate mechanism, a top plate mechanism and a plate transport mechanism are sequentially mounted at the top end of the first slide rail, and the swing plate mechanism is arranged at the lower side of the second slide rail; The plate swing mechanism includes a tray clamping assembly, a material discharging assembly and a translation assembly, wherein the tray clamping assembly includes a layer of trays, the tray clamping assembly is arranged at the top end of the first slide rail, the translation assembly is arranged at the top end of the second bracket, and the material discharging assembly is arranged at one side of the translation assembly, and the material discharging assembly transports the thermal protector assembly to the tray; The tray transport mechanism comprises two first support plates arranged in parallel, a first quadrangular prism-shaped frame, two first lifting assemblies and a plurality of tray separation assemblies, wherein the first support plate is mounted in the first frame and arranged in parallel with the first slide rail, the first lifting assembly is arranged at the bottom end of the first frame and connected to the first bracket, the tray separation assembly is arranged on the inner wall of the first frame, and the tray separation assembly, the first support plate, the tray separation assembly and the first support plate are sequentially arranged on the inner wall of the first frame; The lifting mechanism includes a quadrangular prism-shaped second frame, two second support plates arranged in parallel, two second lifting assemblies and a plurality of support block assemblies, wherein the support block assemblies are arranged on the inner wall of the second frame, the second lifting assembly is arranged at the bottom end of the second frame and connected to the first bracket, and the second support plate is arranged on the inner side of the second frame and connected to the first bracket; A plurality of second U-shaped grooves are provided at the bottom end of the first slide rail, a W-shaped groove and a cross groove are provided on the side wall of the first slide rail, the W-shaped groove is arranged on the upper side of the cross groove, an arc-shaped cover plate is provided at the top end of the first slide rail, a corrugated groove is provided at the bottom end of the arc-shaped cover plate, a circular groove is provided at each side of the corrugated groove, and an arched slider is provided between the corrugated groove and the first slide rail; The plate dividing assembly comprises a plurality of L-shaped support plates, a shovel head is horizontally inserted on the side wall of the L-shaped support plate, a convex notch is provided at one end of the shovel head, and an arc opening is provided at the other end, a plurality of cylinder fixing holes are provided at the bottom end of the L-shaped support plate, and a plurality of support plate fixing holes are provided on the side wall, a horizontal cylinder is connected to the top end of the cylinder fixing hole, the horizontal cylinder is connected to the notch, and the support plate fixing hole is connected to the first frame; The support block assembly includes a wedge block and a groove-shaped wedge seat. The side wall of the wedge seat in the length direction is provided with a through hole, and the side wall of the wedge seat in the width direction is provided with a bracket fixing hole. The wedge block is inserted into the through hole through a pin shaft, and the bracket fixing hole is connected to the second frame.

2. The automatic disk swinging device of the thermal protector assembly according to claim 1, characterized in that: The tray clamping assembly also includes two U-shaped groove plates, a hollow bottom plate and a plurality of abutment blocks, a first U-shaped groove is provided at the bottom end of the bottom plate, a plurality of abutment holes are respectively provided at the two ends of the bottom plate, a plurality of connecting holes are provided at the top end of the bottom plate, the U-shaped groove plate is arranged on both sides of the bottom plate, the U-shaped groove plate, the first support plate and the second support plate are arranged in parallel, the abutment blocks are connected with the abutment holes, and the tray abuts against the U-shaped groove plate and the abutment blocks respectively.

3. The automatic disk swinging device of the thermal protector assembly according to claim 2, characterized in that: The distance from the top of the first support plate to the bottom of the first bracket is A, the distance from the top of the second support plate to the bottom of the first bracket is B, and the distance from the top of the U-shaped groove plate to the bottom of the first bracket is C. Distance A=B, distance B <C。 4. The automatic disk swinging device of the thermal protector assembly according to claim 1, characterized in that: The discharge assembly comprises a side plate, one side of which is provided with two vertical discharge cylinders, and the bottom end of the discharge cylinder is provided with a suction joint.

5. The automatic disk swinging device of the thermal protector assembly according to claim 4, characterized in that: The translation assembly includes a convex slider, which is connected to the side plate, and is arranged on a side away from the discharge cylinder. The slider is slidably connected to one side of the second slide rail, and a limit sensor is respectively provided at both ends of the second slide rail, and a drag chain is provided at the other side of the second slide rail.

6. The automatic disk swinging device of the thermal protector assembly according to claim 1, characterized in that: The first lifting assembly includes at least one first lifting cylinder, a first top plate is provided at the top end of the first lifting cylinder, at least one first rectangular hole and at least one second rectangular hole are provided at the top end of the first bracket, the first rectangular hole is arranged at the bottom end of the first frame, the second rectangular hole is arranged at the bottom end of the second frame, and the first lifting cylinder is connected to the first rectangular hole via a connecting plate.

7. The automatic disk swinging device of the thermal protector assembly according to claim 6, characterized in that: The second lifting assembly includes at least one second lifting cylinder, the second lifting cylinder is fixedly connected to the second rectangular hole, and a second top plate is provided at the top end of the second lifting cylinder.

8. A disc swinging process of an automatic disc swinging device of a thermal protector assembly, characterized in that: The automatic disk placing device using the thermal protector assembly according to any one of claims 1 to 7 comprises the following steps in sequence: 1.1 The first lifting assembly pushes the pallet to the tray separation assembly, the tray separation assembly lifts the pallet through the shovel head and separates the pallets, the pallet clamping assembly moves to the bottom end of the first frame through the first slide rail, a pallet is placed in the pallet clamping assembly and transported to the lower side of the second slide rail through the first drive motor; 1.2 The unloading assembly sucks the two thermal protector assemblies on the disc, and under the drive of the second driving motor, the translation assembly places the thermal protector assemblies into the tray at the lower side of one end of the second slide rail; 1.3 After the tray is filled with thermal protector components, the first drive motor transports the tray to the bottom end of the second frame through the first slide rail; 1.4 The second lifting assembly lifts the pallet, the support block assembly retracts into the second frame, the second lifting assembly descends, and the support block assembly falls under the action of gravity and supports the pallet; 1.5 Repeat steps 1.1 to 1.4.

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