In-mold labeling and alternating conveyor for white cup products

Abstract

The present invention provides an alternately stacking and conveying device for in-mold labeling and white cup products, comprising a support frame and two stacking units that can be replaced with dedicated white cups or in-mold labeling by switching control modes, a frame-along translation mechanism for driving one stacking unit to move back and forth along the support frame to a material receiving station is laid on the support frame, and a lifting and translation mechanism for driving another stacking unit to translate and lift is set up at the lower part of the support frame, and the two stacking units are respectively installed on the frame-along translation mechanism and the lifting and translation mechanism, and when the frame-along translation mechanism drives one stacking unit to the material receiving station to complete the material receiving, the lifting and translation mechanism drives the other stacking unit to the unloading station. The present invention can be used for multiple purposes, and can meet the special stacking and unloading units for in-mold labeling or white cup products. When in use, the stacking and unloading units can be directly replaced, which reduces the cost.

Description

Technical Field

[0001] The invention relates to the technical field of equipment for preparing plastic cup and bowl covers, and in particular to a device for alternately conveying in-mold labeling and white cup products. Background Art

[0002] Among the existing thermoforming equipment at home and abroad, except for the conveying and packing production line with six actions per mold invented by myself, which is characterized by being able to produce both thermoformed in-mold labeled products and white cup products and simultaneously share the conveying and packing unit for horizontal in-mold labeled products, it is a one-machine multi-purpose equipment. However, the only drawback is that when replacing the overlapping and alternating conveying of white cup products, or replacing the overlapping and alternating conveying of white cup products with thermoformed in-mold labeled products, an entire device must be replaced, including the installation of a special in-mold material picking and conveying robot for white cups, and the disassembly, replacement, transportation and installation are troublesome and slow, and the overall device is costly and inconvenient to install.

[0003] The name of the invention patent in China is: AB unit telescopic alternating telescopic stacking and unloading device, and the patent number is 202010764048.5. On the basis of the patented technology, the original frame structure, translation component, in-mold labeling stacking unit of the device are utilized to innovate the shared power supply line, air pipeline and solenoid valve and the shared lower translation lifting structure, and then the same installation fixing point of the in-mold labeling stacking unit is used. After the in-mold labeling stacking unit can be removed, the same fixed installation position of the in-mold labeling is used to replace it with a dedicated white cup stacking unit and remove the in-mold labeling dedicated unloading palm plate, and replace it with a dedicated unloading palm plate for unloading white cups, and then complete the alternating stacking and transmission to the rear robot suitable for connecting and transmitting until it is transmitted for packaging. If the white cup machine is switched to the in-mold labeling control mode, just unload the white cup machine, replace and install the in-mold labeling unloading palm tray, turn off the white cup control mode, start the in-mold labeling mode, and all related devices will slide to the standby state to complete the preparation work before starting. Summary of the invention

[0004] The present invention provides an alternately stacking and conveying device for in-mold labeling and white cup products, which can be used for multiple purposes and can meet the needs of a dedicated stacking and unloading unit for in-mold labeling or white cup products. When in use, the stacking and unloading unit can be directly replaced, thereby reducing the manufacturing cost.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for alternately conveying in-mold labeling and white cup products by stacking is characterized in that it comprises a support frame and two stacking units which can be replaced with one dedicated to white cups or one dedicated to in-mold labeling by switching control modes, a frame-along translation mechanism for driving one stacking unit to move back and forth along the support frame to a material receiving station is laid on the support frame, and a lifting and translation mechanism for driving another stacking unit to translate and lift is set up at the lower part of the support frame, the two stacking units are respectively installed on the frame-along translation mechanism and the lifting and translation mechanism, when the frame-along translation mechanism drives one stacking unit to the material receiving station to complete the material receiving, the lifting and translation mechanism drives the other stacking unit to the unloading station,

[0007] The lifting and translation mechanism includes a translation frame erected in the middle of the lower end of the supporting frame and provided with a translation driving source and a sliding pair, and a lifting frame installed on the translation frame and capable of being lifted and lowered in two stages and moved along the translation frame. The lifting frame has a multi-layer structure, wherein the bottom layer is connected to the translation frame, the middle and upper layers can be lifted and lowered, and the upper layer is connected to the stacking unit. A lifting driving source with a transmission wheel is installed on the bottom layer and the middle layer, and two sections of independent lifting racks are provided on both sides of the lifting frame for maintaining lifting balance. The lifting racks are meshed with the transmission wheels of the lifting driving source, and the lifting driving sources on the bottom layer and the middle layer are operated simultaneously to drive the middle layer and the upper layer to lift and lower, thereby driving the stacking unit to lift and lower smoothly.

[0008] Preferably, the two stacking units are respectively a white cup stacking unit and a white cup loading and unloading unit, the white cup stacking unit is connected to the frame translation mechanism and can move on the frame translation mechanism, so that the white cup stacking unit completes material receiving at the material receiving station and moves to a designated position after completing material receiving, the white cup loading and unloading unit is connected to the lifting and translation mechanism and completes lifting and translation through the drive of the lifting and translation mechanism, so that the white cup loading and unloading unit can operate alternately with the white cup stacking unit without hindrance.

[0009] Preferably, the white cup stacking unit comprises a stacking translation support frame located along the frame translation mechanism and provided with a translation drive source and a sliding pair, a stacking telescopic frame which can move along the stacking translation support frame and has a telescopic drive source and a sliding pair is installed on the stacking translation support frame, and a stacking material assembly which can be replaceably installed and used for stacking white cup products is provided on the stacking telescopic frame. During the stacking operation, the movement of the stacking telescopic frame on the stacking translation support frame and the telescopic movement of the stacking telescopic frame to drive the stacking material assembly can be carried out simultaneously, thereby shortening the time required for the stacking operation.

[0010] Preferably, an extension support frame is installed on one end of the stacking translation support frame close to the material splicing station, and when the stacking telescopic frame drives the stacking material assembly to translate to the material splicing station, one end of the stacking telescopic frame can translate to the extension support frame to maintain balance.

[0011] Preferably, the white cup loading and unloading unit comprises a loading and unloading translational support frame located on the lifting and translational mechanism and provided with a translational drive source and a sliding pair, a loading and unloading telescopic frame which can translate along the loading and unloading translational support frame and has a telescopic drive source and a sliding pair is installed on the loading and unloading translational support frame, and a loading and unloading material receiving component which can be replaceably installed and used for loading and unloading white cup products is provided on the loading and unloading telescopic frame. During the loading and unloading operation, the loading and unloading telescopic frame can move on the loading and unloading translational support frame and the loading and unloading telescopic frame can telescope and drive the loading and unloading material receiving component simultaneously, thereby shortening the time required for the loading and unloading operation.

[0012] Preferably, the two stacking units are respectively an in-mold labeling stacking unit and an in-mold labeling loading and unloading unit. The in-mold labeling stacking unit is connected to the frame translation mechanism and can move on the frame translation mechanism, so that the in-mold labeling stacking unit completes material connection at the material connection station and moves to the designated position after completing the material connection. The in-mold labeling loading and unloading unit is connected to the lifting and translation mechanism and is driven by the lifting and translation mechanism to complete the lifting and translation to the unloading station, so that the in-mold labeling loading and unloading unit can operate alternately with the in-mold labeling stacking unit without hindrance.

[0013] Preferably, the in-mold labeling stacking unit comprises a plurality of rows of stacking telescopic support frames connected to a lifting and translation telescopic driving source and a sliding pair, and the stacking telescopic support frames are provided with stacking material brackets which can be installed interchangeably and can translate along the stacking telescopic support frames.

[0014] Preferably, the in-mold labeling loading and unloading unit comprises a plurality of rows of loading and unloading telescopic support frames connected to a lifting and translation telescopic driving source and a sliding pair, and the loading and unloading telescopic support frames are provided with loading and unloading brackets which can be installed interchangeably and can translate along the loading and unloading telescopic support frames.

[0015] Preferably, a plurality of material receiving and unloading brackets on the telescopic support frame are arranged side by side and can be closed or separated, and two adjacent material receiving and unloading brackets can be connected by a snap-fit ​​assembly.

[0016] Preferably, the frame translation mechanism includes a slide rail group provided on a support frame and having a sliding pair, a drive motor provided at the lower end of the support frame, a drive transmission wheel provided below the slide rail group and connected to the support frame by a belt, and a drive transmission rod having two ends respectively connected to the drive wheel and the drive motor. The slide rail group is also provided with a sliding mounting seat connected to the stacking unit. The slide rail group is connected to the stacking unit through the sliding mounting seat, and its sliding mounting seat is also connected to the belt on the drive transmission wheel. The drive motor drives the drive transmission rod to drive the drive transmission wheel, thereby driving the stacking unit to move along the slide rail group.

[0017] Compared with the prior art, the beneficial effect of the present invention is that it has two operating modes, namely, a special loading and unloading mode for white cup products and a special mode for in-mold labeling, and the two modes can be freely switched in conjunction with other devices on the production line, solving the problem in the prior art that the two modes cannot be freely switched on the same device, and the supporting frame, the frame translation mechanism, the lifting and translation mechanism and the electric valves and air valves required for these mechanisms are all shared, no matter whether it is switched to the special mode for white cups or the special mode for in-mold labeling, they are all interconnected and shared, achieving the purpose of one machine for multiple uses; in addition, the lifting frame of the lifting and translation mechanism adopts a multi-layer structure design, and independent lifting racks are arranged on both sides thereof, which not only can achieve the purpose of lifting, but also can serve as a support point to maintain the stability of the movement of the stacking unit during operation, to avoid the stacking unit being light on one side and heavy on the other side when moving, resulting in unstable situations such as tilting or tipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the stacking unit of the present invention;

[0019] Figure 2 This is a schematic diagram of a white cup product model of the present invention;

[0020] Figure 3 It is a schematic diagram of the in-mold labeling mode of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection between the stacking unit and the lifting frame of the present invention;

[0022] Figure 5 It is a schematic diagram of the lifting frame structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the replacement splicing unit of the production line of the present invention. Implementation

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] It should be noted that when a component / part is referred to as being "set on" another component / part, it may be directly set on the other component / part or there may also be an intermediate component / part. When a component / part is referred to as being "connected / coupled" to another component / part, it may be directly connected / coupled to the other component / part or there may be an intermediate component / part at the same time. The term "connection / coupling" as used herein may include electrical and / or mechanical physical connections / couplings. The term "includes / comprising" as used herein refers to the presence of a feature, step or component / part, but does not exclude the presence or addition of one or more other features, steps or components / parts. The term "and / or" as used herein includes any and all combinations of one or more relevant listed items.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. Example

[0027] See also Figure 1-5 As shown, a device for alternately conveying in-mold labeling and white cup products by overlapping includes a support frame 1 and two overlapping units 2 which can be interchanged with each other for white cups or in-mold labeling by switching control modes. When a mode dedicated to white cups is required, the operating system is directly changed to the white cup mode. At this time, the overlapping unit 2 dedicated to in-mold labeling will be replaced by the overlapping unit 2 dedicated to white cups. If a mode dedicated to in-mold labeling is required, the overlapping unit 2 dedicated to white cups will be replaced by the overlapping unit 2 for in-mold labeling.

[0028] A frame-along translation mechanism 3 is laid on the support frame 1 for driving one stacking unit 2 to move back and forth along the support frame 1 to the material receiving station. A lifting and translation mechanism 4 is set up at the lower part of the support frame 1 for driving the other stacking unit 2 to translate and rise and fall. The two stacking units 2 are respectively installed on the frame-along translation mechanism 3 and the lifting and translation mechanism 4. When the frame-along translation mechanism 3 drives one stacking unit 2 to the material receiving station to complete the material receiving, the lifting and translation mechanism 4 drives the other stacking unit 2 to the unloading station.

[0029] The lifting and translation mechanism 4 includes a translation frame 41 which is erected in the middle of the lower end of the supporting frame 1 and is provided with a translation driving source and a sliding pair, and a lifting frame 42 which is installed on the translation frame 41 and can be lifted and lowered in two stages and can move along the translation frame. The lifting frame 42 has a multi-layer structure, preferably a three-layer structure, wherein the bottom layer 421 is connected to the translation frame, the middle layer 422 and the upper layer 423 can be lifted and lowered, and the upper layer 423 is connected to the stacking unit 2, a lifting driving source 43 with a transmission wheel is installed on the bottom layer 421 and the middle layer 422, and two sections of independent lifting racks 44 are provided on both sides of the lifting frame 42 to maintain lifting balance, the lifting racks 44 are meshed with the transmission wheels of the lifting driving source 43, and the lifting driving sources 43 on the bottom layer 421 and the middle layer 422 are operated simultaneously to drive the middle layer and the upper layer 423 to lift and lower, thereby driving the stacking unit 2 to lift and lower smoothly.

[0030] The specific action of the lifting and translation mechanism 4 is that after the stacking unit 2 located on the frame translation mechanism 3 completes the material connection at the material connection station, the lifting and translation mechanism 4 translates and drives another stacking unit 2 to the central axis of the unloading station, and the two-stage lifting and lowering simultaneously complete the descending action. When the stacking unit 2 located on the frame translation mechanism 3 receives a signal and translates to the material connection standby station, the lifting and translation mechanism 4 drives another stacking unit 2 to translate to the bottom of the unloading station at the same time, and then rises to the unloading station to unload. After the unloading station completes the unloading, it descends and translates to the bottom of the stacking unit 2 located on the frame translation mechanism 3 to wait.

[0031] The above-mentioned support frame 1, frame translation mechanism 3, lifting and translation mechanism 4 and the electric valves and gas valves required by these mechanisms are all shared, whether switched to the white cup special mode or the in-mold labeling special mode.

[0032] The two stacking units 2 are respectively a white cup stacking unit 21a and a white cup loading and unloading unit 22a. The white cup stacking unit 21a is connected to the frame translation mechanism 3 and can move on the frame translation mechanism 3, so that the white cup stacking unit 21a completes the material receiving at the material receiving station and moves to the designated position after completing the material receiving. The white cup loading and unloading unit 22a is connected to the lifting and translation mechanism 4 and completes the lifting and translation through the drive of the lifting and translation mechanism 4, so that the white cup loading and unloading unit 22a can operate unimpeded with the white cup stacking unit 21a, and also meet the work efficiency of four to five actions per film.

[0033] The white cup stacking unit 21a includes a stacking translation support frame 211a located on the frame translation mechanism 3 and provided with a translation drive source (preferably a motor) and a sliding pair, a stacking telescopic frame 212a which can move along the stacking translation support frame 211a and is provided with a telescopic drive source (preferably a cylinder) and a sliding pair is installed on the stacking translation support frame 211a, and a stacking material assembly 213a which can be interchangeably installed and used for stacking white cup products is provided on the stacking telescopic frame 212a. During the stacking operation, the movement of the stacking telescopic frame 212a on the stacking translation support frame 211a and the telescopic movement of the stacking telescopic frame 212a to drive the stacking material assembly 213a can be performed simultaneously, thereby shortening the time required for the stacking operation. An extension support frame 214a is also installed on one end of the stacking translation support frame 211a close to the material receiving station. When the stacking telescopic frame 212a drives the stacking material assembly 213a to translate to the material receiving station, one end of the stacking telescopic frame 212a can translate to the extension support frame 214a to maintain balance.

[0034] The white cup loading and unloading unit 22a includes a loading and unloading translation support frame 221a located on the lifting and translation mechanism 4 and provided with a translation driving source (preferably a motor) and a sliding pair; a loading and unloading telescopic frame 222a which can translate along the loading and unloading translation support frame 221a and is provided with a telescopic driving source (preferably a cylinder) and a sliding pair is installed on the loading and unloading translation support frame 221a; a loading and unloading material receiving component 223a which can be replaceably installed and used for loading and unloading white cup products is provided on the loading and unloading telescopic frame 222a; during the loading and unloading operation, the loading and unloading telescopic frame 222a moves on the loading and unloading translation support frame 221a and the loading and unloading telescopic frame 222a telescopes to drive the loading and unloading material receiving component 223a, which can be performed simultaneously, thereby shortening the time required for the loading and unloading operation.

[0035] The frame translation mechanism 3 includes a slide rail group 31 provided on the support frame 1 and having a sliding pair, a drive motor 32 provided at the lower end of the support frame, a drive transmission wheel 33 provided below the slide rail group 31 and connected to the support frame 1 through a belt, and a drive transmission rod 34 with two ends respectively connected to the drive transmission wheel 33 and the drive motor 32. The slide rail group 31 is also provided with a sliding mounting seat 35 connected to the stacking unit 2. The slide rail group 31 is connected to the stacking unit 2 through the sliding mounting seat 35, and its sliding mounting seat 35 is also connected to the belt on the drive transmission wheel 33. The drive motor 32 drives the drive transmission rod 34 to drive the drive transmission wheel 33, thereby driving the stacking unit 2 to move along the slide rail group 31. Example

[0036] See also Figure 1-5As shown, the remaining features of this embodiment are the same as those of Embodiment 1, and will not be elaborated on here. The difference is that the two stacking units 2 are respectively an in-mold labeling stacking unit 21b and an in-mold labeling loading and unloading unit 22b. The in-mold labeling stacking unit 21b is connected to the frame translation mechanism 3 and can move on the frame translation mechanism 3, so that the in-mold labeling stacking unit 21b completes the material connection at the material connection station and moves to the designated position after completing the material connection. The in-mold labeling loading and unloading unit 22b is connected to the lifting and translation mechanism 4 and is driven by the lifting and translation mechanism 4 to complete the lifting and translation to the unloading station, so that the in-mold labeling loading and unloading unit 22b can operate unimpeded with the in-mold labeling stacking unit 21b, and also meet the work efficiency of four to five actions per film.

[0037] The in-mold labeling stacking unit 21b includes a plurality of rows of stacking and telescopic support frames 211b connected with lifting and translational telescopic driving sources (the driving source for lifting is preferably a lifting cylinder, and the driving source for translational telescopic driving source can be a motor or a cylinder) and a sliding pair, and the stacking and telescopic support frame 211b is provided with a stacking material bracket 212b that can be installed interchangeably and can be translated along the stacking and telescopic support frame 211b; the in-mold labeling loading and unloading unit 22b includes a plurality of rows of loading and unloading telescopic support frames 221b connected with lifting and translational telescopic driving sources (the driving source for lifting is preferably a lifting cylinder, and the driving source for translational telescopic driving source can be a motor or a cylinder) and a sliding pair, and the loading and unloading telescopic support frame 221b is provided with a loading and unloading material bracket 222b that can be installed interchangeably and can be translated along the loading and unloading telescopic support frame 221b. Multiple stacking material brackets 212b located on the stacking telescopic support frame 211b or multiple receiving and unloading material brackets 222b located on the receiving and unloading telescopic support frame 221b are arranged side by side and can be closed or separated. Two adjacent stacking material brackets 212b or receiving and unloading material brackets 222b can be connected by a snap assembly 23b.

[0038] See also Figure 6As shown, the most significant effect of the present invention is that the support frame, the frame translation mechanism 3 and the lifting and translation mechanism 4 can simultaneously match the splicing unit 2 dedicated to in-mold labeling and the splicing unit 2 dedicated to white cups. When replacement is needed, it can be directly replaced, saving time, labor, labor and production costs. The following is the order of replacement of the splicing unit 2 dedicated to in-mold labeling and the splicing unit 2 dedicated to white cups and the coordination of other equipment on the production line: ① The small crane 5 lifts and installs the replacement conveying structure 6 placed on the outside of the label conveying device 9 and then changes the mold. ② Install the splicing placement seat 7 on the replacement conveying structure 6. ③ Fix the lifting force support rod to the lateral splicing conveying manipulator 8 and then install the small crane 5. ④ After lifting the two in-mold labeling stacking units, move the lateral stacking conveying robot 8 to transport the in-mold labeling stacking units to the stacking placement seat 7, push the in-mold labeling stacking units out of the machine frame along the track of the conveying structure, and then transport them to the designated position. ⑤ After completing the transportation of the replacement mold and unloading of the in-mold labeling stacking units. Then put the two sets of white cup product stacking units on the stacking placement seat 7 in sequence, push them to the lifting position of the small crane 5, and lift them off for stacking. ⑥ Move the lateral stacking conveying robot 8 to transport the white cup product stacking units to the installation position, then lower them to complete the lifting, and lock the fixed rose to complete the fixation of the white cup product stacking units. ⑦ Use the small crane 5 to lift the replacement conveying structure 6 and the stacking placement seat 7 and place them on the outside under the label conveying device 9. ⑧ Then use the lifting crane to lift the white cup product mold material taking and stacking conveying robot 8 stored under the inner side of the label conveying device 9 and lift it to the translation support frame of the label conveying device 9 installed under the front of the mold to complete the fixed installation. ⑨ Remove the lifting crane and the reinforcement support rod, and install the side stacking conveying robot 8, and complete all the work before starting the replacement control mode.

[0039] The present invention has two operation modes, namely, a loading and unloading mode for white cup products and a special mode for in-mold labeling, and the two modes can be freely switched in coordination with other devices on the production line, thereby solving the problem in the prior art that the two modes cannot be freely switched on the same device. The supporting frame 1, the frame translation mechanism 3, the lifting and translation mechanism 4 and the electric valves and air valves required for these mechanisms are all shared, and no matter whether it is switched to the white cup special mode or the in-mold labeling special mode, they are all interconnected and shared, thus achieving the purpose of one machine with multiple uses. In addition, the lifting frame 42 of the lifting and translation mechanism 4 adopts a multi-layer structure design, and independent lifting racks 44 are arranged on both sides thereof, which can not only achieve the purpose of lifting, but also serve as a support point to maintain the stability of the movement of the stacking unit 2 during operation, thereby avoiding unstable situations such as tilting or tipping due to one side being light and the other side being heavy when the stacking unit 2 moves.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The device for alternately conveying in-mold labeling and white cup products is characterized by: It comprises a support frame and two stacking units which can be replaced with those dedicated to white cups or in-mold labeling by switching control modes. A frame-along translation mechanism for driving one stacking unit to move back and forth along the support frame to a material receiving station is laid on the support frame. A lifting and translation mechanism for driving another stacking unit to move horizontally and vertically is set up at the lower part of the support frame. The two stacking units are respectively installed on the frame-along translation mechanism and the lifting and translation mechanism. When the frame-along translation mechanism drives one stacking unit to the material receiving station to complete the material receiving, the lifting and translation mechanism drives the other stacking unit to the unloading station. The lifting and translation mechanism includes a translation frame erected in the middle of the lower end of the supporting frame and provided with a translation driving source and a sliding pair, and a lifting frame installed on the translation frame and capable of being lifted and lowered in two stages and moved along the translation frame. The lifting frame has a multi-layer structure, wherein the bottom layer is connected to the translation frame, the middle and upper layers can be lifted and lowered, and the upper layer is connected to the stacking unit. A lifting driving source with a transmission wheel is installed on the bottom layer and the middle layer, and two sections of independent lifting racks are provided on both sides of the lifting frame for maintaining lifting balance. The lifting racks are meshed with the transmission wheels of the lifting driving source, and the lifting driving sources on the bottom layer and the middle layer are operated simultaneously to drive the middle layer and the upper layer to lift and lower, thereby driving the stacking unit to lift and lower smoothly.

2. The device for alternately conveying in-mold labeling and white cup products according to claim 1, characterized in that: The two stacking units are respectively a white cup stacking unit and a white cup loading and unloading unit. The white cup stacking unit is connected to the frame translation mechanism and can move on the frame translation mechanism, so that the white cup stacking unit completes material receiving at the material receiving station and moves to a designated position after completing material receiving. The white cup loading and unloading unit is connected to the lifting and translation mechanism and completes lifting and translation through the drive of the lifting and translation mechanism, so that the white cup loading and unloading unit can operate alternately with the white cup stacking unit without hindrance.

3. The device for alternately conveying in-mold labeling and white cup products according to claim 2, characterized in that: The white cup stacking unit includes a stacking translation support frame located on a frame translation mechanism and provided with a translation drive source and a sliding pair, a stacking telescopic frame that can move along the stacking translation support frame and provided with a telescopic drive source and a sliding pair is installed on the stacking translation support frame, and a stacking material assembly that can be replaceably installed and used for stacking white cup products is provided on the stacking telescopic frame. During the stacking operation, the movement of the stacking telescopic frame on the stacking translation support frame and the telescopic movement of the stacking telescopic frame to drive the stacking material assembly can be carried out simultaneously, thereby shortening the time required for the stacking operation.

4. The device for alternately conveying in-mold labeling and white cup products according to claim 3, characterized in that: An extension support frame is also installed on one end of the stacking translation support frame close to the material receiving station. When the stacking telescopic frame drives the stacking material assembly to translate to the material receiving station, one end of the stacking telescopic frame can translate to the extension support frame to maintain balance.

5. The device for alternately conveying in-mold labeling and white cup products according to claim 2, characterized in that: The white cup loading and unloading unit comprises a loading and unloading translation support frame which is located on the lifting and translation mechanism and is provided with a translation driving source and a sliding pair; a loading and unloading telescopic frame which can translate along the loading and unloading translation support frame and is provided with a telescopic driving source and a sliding pair is installed on the loading and unloading translation support frame; a loading and unloading assembly which can be replaceably installed and is used for loading and unloading white cup products is provided on the loading and unloading telescopic frame; during the loading and unloading operation, the loading and unloading telescopic frame can move on the loading and unloading translation support frame and the loading and unloading telescopic frame can telescope and drive the loading and unloading assembly to proceed simultaneously, thereby shortening the time required for the loading and unloading operation.

6. The device for alternately conveying in-mold labeling and white cup products according to claim 1, characterized in that: The two stacking units are respectively an in-mold labeling stacking unit and an in-mold labeling loading and unloading unit. The in-mold labeling stacking unit is connected to the frame translation mechanism and can move on the frame translation mechanism, so that the in-mold labeling stacking unit completes material connection at the material connection station and moves to the designated position after completing the material connection. The in-mold labeling loading and unloading unit is connected to the lifting and translation mechanism and is driven by the lifting and translation mechanism to complete the lifting and translation to the unloading station, so that the in-mold labeling loading and unloading unit can operate alternately with the in-mold labeling stacking unit without hindrance.

7. The device for alternately conveying in-mold labeling and white cup products according to claim 6, characterized in that: The in-mold labeling stacking unit comprises a plurality of rows of stacking telescopic support frames connected to lifting and translation telescopic driving sources and sliding pairs, and the stacking telescopic support frames are provided with stacking material brackets which can be installed interchangeably and can translate along the stacking telescopic support frames.

8. The device for alternately conveying in-mold labeling and white cup products according to claim 6, characterized in that: The in-mold labeling loading and unloading unit comprises a plurality of rows of loading and unloading telescopic support frames connected to a lifting and translation telescopic driving source and a sliding pair, and the loading and unloading telescopic support frames are provided with loading and unloading brackets which can be installed interchangeably and can translate along the loading and unloading telescopic support frames.

9. The device for alternately conveying in-mold labeling and white cup products according to claim 7 or 8, characterized in that: A plurality of stacking material brackets on the stacking telescopic support frame or a plurality of receiving and unloading material brackets on the receiving and unloading telescopic support frame are arranged side by side and can be closed or separated, and two adjacent stacking material brackets or receiving and unloading material brackets can be connected by a buckle assembly.

10. The device for alternately conveying in-mold labeling and white cup products according to claim 1, 2 or 6, characterized in that: The frame-translation mechanism includes a slide rail group provided on a supporting frame and having a sliding pair, a driving motor provided at the lower end of the supporting frame, a driving transmission wheel provided below the slide rail group and connected to the supporting frame through a belt, and a driving transmission rod with the driving transmission wheel and the driving motor connected at both ends respectively. The slide rail group is also provided with a sliding mounting seat connected to the stacking unit. The slide rail group is connected to the stacking unit through the sliding mounting seat, and its sliding mounting seat is also connected to the belt on the driving transmission wheel. The driving motor drives the driving transmission rod to drive the driving transmission wheel, thereby driving the stacking unit to move along the slide rail group.

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