Preheating carrier and transfer device

Abstract

The application relates to the technical field of manufacturing and processing, in particular to a preheating carrier and a material moving device. The preheating carrier comprises an air channel plate provided with an air supply groove, a temperature rising assembly comprising a temperature rising plate connected with the air channel plate, the temperature rising plate being provided with a plurality of first air supply holes communicated with the air supply groove, and a material suction plate connected to one side of the temperature rising plate away from the air channel plate, the material suction plate being provided with a material stripping groove, a plurality of first air suction holes for air suction to adsorb workpieces, and a plurality of second air supply holes all penetrating through the material suction plate and communicated with the material stripping groove, the plurality of second air supply holes being one-to-one communicated with the plurality of first air supply holes, and the plurality of second air supply holes being used for air supply to the material stripping groove; wherein the temperature rising plate is used for temperature rising of the material suction plate and air flowing into the air supply groove. The material moving device comprises the above preheating carrier and a driving piece. The above preheating carrier and the material moving device can carry and transfer workpieces, reduce the deformation amount of the workpieces after being heated, and improve the production yield of the workpieces.

Description

Technical Field

[0001] This application relates to the field of manufacturing and processing technology, specifically to a preheating carrier and a material transfer device. Background Technology

[0002] Glass covers are common components in electronic products. To meet design requirements, specific curvatures are often machined into specific locations on the glass cover during production. During machining, the glass cover is placed in a pressing fixture for heating and shaping. Due to the significant temperature difference between the glass cover and the pressing fixture, directly placing the glass cover in the fixture can easily damage it. Therefore, the glass cover needs to be preheated before being placed in the pressing fixture, and the carrier used to transfer the glass cover also needs to be heated. After the carrier supports the glass cover, due to its high temperature, the glass cover can easily stick to the carrier. Therefore, grooves need to be provided on the carrier to facilitate the separation of the glass cover from the carrier.

[0003] To improve the stability of the carrier supporting the glass sheet, an adsorption carrier is typically used to hold the glass sheet in place. However, in actual production, when the carrier holds the glass cover plate, the gas between the carrier and the glass cover plate is extracted, causing some gas to be drawn out of the tank. The glass cover plate softens upon heating, causing deformation at the location corresponding to the tank. After the pressing fixture presses the glass cover plate, wavy patterns appear at the location corresponding to the tank, severely impacting production yield. Utility Model Content

[0004] In view of the above, it is necessary to propose a preheating carrier and material transfer device that can carry and transfer workpieces, reduce the deformation of workpieces after heating, and improve the production yield of workpieces.

[0005] This application provides a preheating carrier, comprising: an air duct plate having an air supply groove; a heating assembly including a heating plate connected to the air duct plate, the heating plate having a plurality of first air supply holes all communicating with the air supply groove; and a suction plate connected to the side of the heating plate away from the air duct plate, the suction plate having a stripping groove, a plurality of first suction holes and a plurality of second air supply holes, the stripping groove and the plurality of first suction holes being disposed on the side of the suction plate away from the heating plate, the plurality of first suction holes being used to draw air to adsorb workpieces, the plurality of second air supply holes all penetrating the suction plate and communicating with the stripping groove, the plurality of second air supply holes corresponding one-to-one with the plurality of first air supply holes, and the plurality of second air supply holes being used to supply air to the stripping groove; wherein, the heating plate is used to heat the suction plate and the gas flowing into the air supply groove.

[0006] The aforementioned preheating carrier includes an air duct plate, a heating plate, and a suction plate. The heating plate heats the suction plate to improve its stability, thereby reducing the temperature difference between the suction plate and the workpiece and preventing damage to the workpiece due to a large temperature difference when the suction plate contacts the workpiece. The suction plate has a stripping groove to facilitate separation of the workpiece from the suction plate. The air duct plate has an air supply groove that connects to a first air supply hole on the heating plate, which in turn connects to a second air supply hole on the suction plate, thus forming an air supply channel to supply air to the stripping groove. When the suction plate adsorbs the workpiece, the air supply channel formed by the air supply groove, the first air supply hole, and the second air supply hole can continuously supply air to the stripping groove to stabilize the air pressure within the stripping groove, prevent deformation of the workpiece relative to the stripping groove, and improve the yield of subsequent pressing production. The air duct plate is connected to the heating plate. The heating plate can heat the gas entering the air supply tank to reduce the temperature difference between the gas temperature entering the first and second air supply holes and the workpiece temperature, thereby further preventing workpiece deformation.

[0007] In some embodiments, the air supply trough includes an air inlet section and an air outlet section that are connected to each other. The air inlet section is connected to an external air supply device and is configured with a wave-shaped structure. The air outlet section corresponds to the unloading trough and is connected to a plurality of first air supply holes.

[0008] In some embodiments, the heating plate has a plurality of first buffer slots connected to the gas supply slots on the side near the gas duct plate. The plurality of first buffer slots are connected to the plurality of first gas supply holes one by one, and the plurality of first buffer slots are used to buffer gas.

[0009] In some embodiments, the suction plate has a plurality of second buffer slots on the side near the heating plate, and the plurality of second buffer slots are connected to a plurality of second air supply holes in a one-to-one correspondence, and the plurality of second buffer slots are all used to buffer gas.

[0010] In some embodiments, the plurality of first suction holes are strip-shaped structures, and the plurality of first suction holes are respectively disposed in the middle part of the suction plate and the side near the suction plate.

[0011] In some embodiments, the stripping groove is an annular structure, and the suction plate is further provided with a plurality of second suction holes. The plurality of second suction holes are all strip-shaped structures and are all arranged close to the inner side of the stripping groove. The plurality of second suction holes are used to draw air to adsorb the workpiece.

[0012] In some embodiments, the heating plate is provided with a first suction channel and a second suction channel on the side near the suction plate. The first suction channel is connected to a plurality of first suction holes, and the second suction channel is connected to a plurality of second suction holes.

[0013] In some embodiments, the heating plate has a receiving groove on the side facing the suction plate, and the receiving groove is configured to receive the suction plate.

[0014] In some embodiments, the heating assembly further includes a plurality of heating elements, all of which are inserted into the heating plate and are configured to heat the heating plate.

[0015] This application embodiment also provides a material transfer device, including: the preheating carrier and the driving component described above, wherein the driving component is connected to the preheating carrier and is used to drive the preheating carrier to move.

[0016] The aforementioned material transfer device can transfer workpieces and effectively reduce workpiece deformation, thereby improving production yield. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the preheating vehicle provided in an embodiment of this application.

[0018] Figure 2 for Figure 1 The exploded structural diagram of the preheating vehicle is shown.

[0019] Figure 3 for Figure 2 The preheating vehicle shown is an exploded structural diagram from another angle.

[0020] Figure 4 for Figure 1 The preheating vehicle shown is a cross-sectional view along the IV-IV direction.

[0021] Figure 5 This is a schematic diagram of the material transfer device provided in the embodiments of this application.

[0022] Explanation of main component symbols: material transfer device 1000, preheating carrier 100, air duct plate 10, air supply groove 11, air inlet section 111, air outlet section 112, heating component 20, heating plate 21, first air supply hole 211, first buffer groove 212, first air extraction channel 213, second air extraction channel 214, receiving groove 215, heating component 22, suction plate 30, unloading groove 31, first suction hole 32, second air supply hole 33, second buffer groove 34, second suction hole 35, driving component 200, workpiece 2000. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0027] Please see Figure 1 , Figure 2 and Figure 3 This application provides a preheating carrier 100 for carrying and preheating a workpiece 2000. The workpiece 2000 can be a glass cover for an electronic product, such as a mobile phone, tablet, or smartwatch. The preheating carrier 100 includes an air duct plate 10, a heating component 20, and a suction plate 30.

[0028] Specifically, the air duct plate 10 has an air supply groove 11. The air supply groove 11 can be formed inside the air duct plate 10 or on its surface. In this embodiment, in order to facilitate the processing of the air supply groove 11 on the air duct plate 10, the air supply groove 11 is formed on the surface of the air duct plate 10. It can be understood that one end of the air supply groove 11 is used to communicate with an external air supply device (not shown).

[0029] The heating assembly 20 includes a heating plate 21 connected to the air duct plate 10. The heating plate 21 has multiple first air supply holes 211, each communicating with an air supply groove 11. It is understood that if the air supply groove 11 on the air duct plate 10 is located on its surface, then when the heating plate 21 is connected to the air duct plate 10, the side of the air duct plate 10 with the air supply groove 11 is connected to the heating plate 21 to seal the air supply groove 11. The number of first air supply holes 211 can be six, eight, ten, etc., and the specific number can be set according to actual needs, and is not limited here. In this embodiment, the first air supply holes 211 penetrate the heating plate 21 in a direction perpendicular to it.

[0030] The suction plate 30 is connected to the heating plate 21 on the side opposite to the air duct plate 10. The suction plate 30 has a stripping groove 31, multiple first suction holes 32, and multiple second air supply holes 33. The stripping groove 31 and the multiple first suction holes 32 are all located on the side of the suction plate 30 opposite to the heating plate 21. The multiple first suction holes 32 are used to draw air to adsorb the workpiece 2000. The multiple second air supply holes 33 all penetrate the suction plate 30 and communicate with the stripping groove 31. The multiple second air supply holes 33 are connected one-to-one with the multiple first air supply holes 211 and are used to supply air to the stripping groove 31. The heating plate 21 is used to heat the suction plate 30 and the gas flowing into the air supply groove 11. The number of first suction holes 32 can be set to ten, twelve, fourteen, etc., as long as it can stably adsorb the workpiece 2000. The number and position of the second air supply holes 33 are consistent with the number and position of the first air supply holes 211.

[0031] To facilitate understanding, the processing of workpiece 2000 will be described first. First, workpiece 2000 needs to be preheated. Then, it is held in place by the preheating carrier 100 and transferred to a pressing fixture (not shown). During the transfer process, the area of ​​workpiece 2000 to be processed needs to be further heated, for example, by heating it with a flame, to soften the area and facilitate pressing and shaping by the pressing fixture.

[0032] After preheating the workpiece 2000, its temperature rises. If a room-temperature suction plate 30 is used to hold the workpiece 2000, the large temperature difference between the workpiece 2000 and the suction plate 30 will cause the workpiece 2000 to easily break or undergo uncontrollable deformation. By heating the suction plate 30 with the heating plate 21, the temperature of the suction plate 30 and the workpiece 2000 is matched, effectively preventing the workpiece 2000 from breaking or deforming. During the transfer process, the workpiece 2000 is further heated, softening it. At this point, the workpiece 2000 easily sticks to the suction plate 30, making it difficult to unload. By providing a stripping groove 31 on the heating plate 21, the workpiece 2000 can be easily separated from the suction plate 30. Therefore, the position of the stripping groove 31 corresponds to the position where the workpiece 2000 is further heated. In other embodiments, multiple stripping grooves 31 can be provided, such as two or three, etc. The specific position and number can be set according to actual needs and are not limited here.

[0033] Since the suction plate 30 uses an adsorption method to grip the workpiece 2000, the first suction hole 32 removes the air between the suction plate 30 and the workpiece 2000, thereby generating a negative pressure to adsorb the workpiece 2000. This causes some air in the stripping groove 31 to be sucked away by the first suction hole 32 near the stripping groove 31. After further heating of the workpiece 2000, the part of the workpiece 2000 opposite to the stripping groove 31 is prone to sinking into the stripping groove 31. After subsequent pressing of the workpiece 2000, wavy patterns and other phenomena are likely to appear at the position opposite to the stripping groove 31, resulting in poor processing. Through the gas channel formed by the air supply groove 11, the first air supply hole 211 and the second air supply hole 33, gas can be continuously injected into the stripping groove 31 to keep the air pressure in the stripping groove 31 balanced with the outside, which can effectively prevent the workpiece 2000 from deforming into the stripping groove 31 and improve the production yield. The heating plate 21 can heat the gas in the gas supply tank 11, the first gas supply hole 211 and the second gas supply hole 33, thereby matching the temperature of the gas entering the stripping tank 31 with the temperature of the workpiece 2000, which can prevent the workpiece 2000 from deforming due to the temperature difference between the gas temperature entering the stripping tank 31 and the workpiece 2000.

[0034] The preheating carrier 100 provided in this embodiment includes an air duct plate 10, a heating plate 21, and a suction plate 30. The heating plate 21 can heat the suction plate 30 to improve its stability, thereby reducing the temperature difference between the suction plate 30 and the workpiece 2000 and preventing damage to the workpiece 2000 due to a large temperature difference when the suction plate 30 contacts the workpiece 2000. The suction plate 30 has a stripping groove 31 to facilitate the separation of the workpiece 2000 from the suction plate 30. The air duct plate 10 has an air supply groove 11, which is connected to a first air supply hole 211 on the heating plate 21. The first air supply hole 211 is also connected to a second air supply hole 33 on the suction plate 30, thus forming an air supply channel to supply air to the stripping groove 31. When the suction plate 30 adsorbs the workpiece 2000, the air supply channel formed by the air supply groove 11, the first air supply hole 211, and the second air supply hole 33 can continuously supply air to the stripping groove 31 to stabilize the air pressure in the stripping groove 31, prevent deformation of the relative position of the workpiece 2000 and the stripping groove 31, and improve the yield of subsequent pressing production. The air duct plate 10 is connected to the heating plate 21, which can heat the gas entering the air supply groove 11 to reduce the temperature difference between the gas temperature entering the first air supply hole 211 and the second air supply hole 33 and the workpiece 2000, further preventing deformation of the workpiece 2000.

[0035] In some embodiments, see Figure 1 and Figure 2 The air supply trough 11 includes an inlet section 111 and an outlet section 112 connected to each other. The inlet section 111 is connected to an external air supply device and is designed with a wave-shaped structure. The outlet section 112 corresponds to the unloading trough 31 and is connected to multiple first air supply holes 211. The wave-shaped (serpentine) structure of the inlet section 111 significantly increases the flow distance of the gas in the air duct plate 10 compared to a straight pipe, allowing the gas to fully contact the heating plate 21 and improving the preheating effect. The wave-shaped design avoids local overheating or uneven heating of the gas, ensuring a stable gas temperature entering the suction plate 30 and reducing the heating difference of the workpiece 2000. The connection between the outlet section 112 and the multiple first air supply holes 211 can disperse the airflow pressure and prevent the workpiece 2000 from shifting or being damaged due to excessive airflow at a single point.

[0036] In some embodiments, see Figure 1 , Figure 3 and Figure 4The heating plate 21 has multiple first buffer slots 212 connected to the air supply slots 11 on the side near the air duct plate 10. Each first buffer slot 212 corresponds to a first air supply hole 211, and all first buffer slots 212 are used to buffer gas. The number of first buffer slots 212 can be six, eight, ten, etc. In this embodiment, the first buffer slots 212 can be cylindrical, meaning the radius of the first buffer slot 212 is larger than the radius of the first air supply hole 211. By setting the first buffer slots 212, gas can be temporarily stored, making the airflow pressure more uniform and preventing the gas from directly rushing into the suction plate 30 at high speed, which could cause unstable adsorption or displacement of the workpiece 2000. The first buffer slots 212 can also reduce the turbulence effect of the gas flow, allowing the airflow to enter the second air supply hole 33 of the suction plate 30 more smoothly. By setting the first buffer slots 212, the residence time of the gas in the heating plate 21 can also be increased, allowing the gas to be heated more fully and ensuring a consistent gas temperature entering the suction plate 30, avoiding localized temperature unevenness.

[0037] In some embodiments, see Figure 1 , Figure 3 and Figure 4 The suction plate 30 has multiple second buffer grooves 34 on the side near the heating plate 21. These second buffer grooves 34 are connected to multiple second air supply holes 33 in a one-to-one correspondence, and each second buffer groove 34 is used to buffer gas. The number of second buffer grooves 34 can be six, eight, ten, etc., and the second buffer grooves 34 can be strip-shaped, etc. The cross-sectional area of ​​the second buffer grooves 34 is larger than the cross-sectional area of ​​the second air supply holes 33. The function of the second buffer grooves 34 is similar to that of the first buffer groove 212. As the final buffer layer before the gas enters the stripping groove 31, the second buffer grooves 34 can further equalize the gas pressure and prevent high-pressure gas from directly impacting the workpiece 2000. During the gas supply process, if there are instantaneous fluctuations in gas flow or pressure changes, the second buffer grooves 34 can act as a buffer, absorbing excess gas or supplementing insufficient gas, thereby ensuring the stability of the gas supply.

[0038] In some embodiments, see Figure 1 , Figure 2 and Figure 3The multiple first suction holes 32 are all strip-shaped structures, and are respectively located in the middle of the suction plate 30 and on the side near the suction plate 30. Compared with circular or other shaped suction holes, the strip-shaped structure can provide a larger adsorption area on the same area of ​​the suction plate 30. During the adsorption process, the workpiece 2000 can come into contact with more first suction holes 32, thereby obtaining a stronger adsorption force. The larger adsorption area ensures that the workpiece 2000 is more firmly adsorbed on the suction plate 30 during preheating and transfer, reducing the risk of the workpiece 2000 loosening or falling off, and improving the stability and reliability of workpiece 2000 processing. The strip-shaped first suction holes 32 can be evenly distributed along the surface of the workpiece 2000, so that the adsorption force acts more evenly on the workpiece 2000. This uniform distribution of adsorption force helps avoid deformation or damage to the workpiece 2000 caused by uneven local stress during adsorption. Especially for workpieces 2000 with complex shapes or thin surfaces, the strip-shaped first suction hole 32 can better adapt to the shape of the workpiece 2000, providing a more stable adsorption effect. By distributing multiple first suction holes 32 in the middle of the suction plate 30 and on its sides near the suction plate 30, the stability of the suction plate 30's adsorption of the workpiece 2000 can be effectively ensured. This comprehensive adsorption layout greatly improves the stability and reliability of the workpiece 2000's adsorption.

[0039] In some embodiments, see Figure 1 and Figure 2 The stripping groove 31 has an annular structure, and the suction plate 30 also has multiple second suction holes 35. These second suction holes 35 are strip-shaped and located close to the inner side of the stripping groove 31. They are used to draw air to adsorb the workpiece 2000. The annular shape of the stripping groove 31 ensures effective separation between the workpiece 2000 and the suction plate 30 while improving the stability of the suction plate 30 in adsorbing the workpiece 2000. The portion of the suction plate 30 located inside the stripping groove 31 provides support for the workpiece 2000, preventing deformation. The presence of the second suction holes 35 further enhances the stability of the workpiece 2000 during the adsorption process. When adsorbing the workpiece 2000, the first suction hole 32 and the second suction hole 35 work together to provide multi-layered adsorption force protection for the workpiece 2000.

[0040] In some embodiments, see Figure 1 , Figure 2 and Figure 3The heating plate 21 has a first suction channel 213 and a second suction channel 214 on the side near the suction plate 30. The first suction channel 213 is connected to multiple first suction holes 32, and the second suction channel 214 is connected to multiple second suction holes 35. It can be understood that the first suction channel 213 and the second suction channel 214 are respectively connected to an external suction device (not shown) to form two adsorption areas. This allows the preheating carrier 100 to precisely control the suction of the first suction holes 32 or the second suction holes 35. When adsorbing the workpiece 2000, the suction volume of the first suction channel 213 and the second suction channel 214 can be independently adjusted according to the shape, size, and adsorption requirements of the workpiece 2000, thereby achieving precise control of the adsorption force on different parts of the workpiece 2000. This ensures that the workpiece 2000 is more firmly attached during adsorption and avoids deformation or damage to the workpiece 2000 due to excessive adsorption force.

[0041] In some embodiments, see Figure 1 and Figure 2 The heating plate 21 has a receiving groove 215 on the side facing the suction plate 30, which is configured to accommodate the suction plate 30. By providing the receiving groove 215, the suction plate 30 can be tightly embedded in the receiving groove 215 of the heating plate 21, maximizing the contact area between the suction plate 30 and the heating plate 21. This not only improves structural stability but also reduces the risk of equipment failure due to component loosening or misalignment. The design of the receiving groove 215 provides a precise positioning and assembly position for the suction plate 30. During assembly, the suction plate 30 can be accurately placed within the receiving groove 215, avoiding component damage or functional failure due to assembly errors. Because the suction plate 30 is tightly embedded in the receiving groove 215, the increased contact area between the suction plate 30 and the heating plate 21 helps improve heat transfer efficiency. During heating, the heating plate 21 can more effectively transfer heat to the suction plate 30, ensuring that the suction plate 30 can be preheated quickly and uniformly.

[0042] In some embodiments, see Figure 1 The heating assembly 20 also includes multiple heating elements 22, all of which are inserted into the heating plate 21 and configured to heat the heating plate 21. The heating elements 22 can be electric heating rods, etc., and there can be two, three, four, etc. By having multiple heating elements 22 working simultaneously, heat can be quickly transferred to the heating plate 21, thereby achieving rapid heating of the suction plate 30 and the gas.

[0043] Please see Figure 5This application embodiment also provides a material transfer device 1000, including the preheating carrier 100 and a driving member 200. The driving member 200 is connected to the preheating carrier 100 and is used to drive the preheating carrier 100 to move. The driving member 200 can be a driving device such as a robotic arm, and is used to drive the preheating carrier 100 to move in order to transfer the workpiece 2000.

[0044] The material transfer device 1000 provided in this application embodiment can transfer workpiece 2000 and effectively reduce the deformation of workpiece 2000, thereby improving production yield.

[0045] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A preheating vehicle, characterized in that, include: An air duct plate, wherein the air duct plate is provided with an air supply groove; The heating assembly includes a heating plate connected to the air duct plate, and the heating plate has multiple first air supply holes, each communicating with the air supply slot; and A suction plate is connected to the heating plate on the side opposite to the air duct plate. The suction plate has a stripping groove, multiple first suction holes, and multiple second air supply holes. The stripping groove and the multiple first suction holes are all located on the side of the suction plate opposite to the heating plate. The multiple first suction holes are used to draw air to adsorb the workpiece. The multiple second air supply holes all penetrate the suction plate and communicate with the stripping groove. The multiple second air supply holes are connected to the multiple first air supply holes one by one. The multiple second air supply holes are used to supply air to the stripping groove. The heating plate is used to heat the suction plate and the gas flowing into the air supply groove.

2. The preheating vehicle as described in claim 1, characterized in that, The air supply trough includes an air inlet section and an air outlet section that are connected to each other. The air inlet section is connected to an external air supply device and is configured with a wave-shaped structure. The air outlet section corresponds to the material discharge trough and is connected to a plurality of first air supply holes.

3. The preheating vehicle as described in claim 1, characterized in that, The heating plate has multiple first buffer slots connected to the gas supply slots on the side near the gas duct plate. Each of the multiple first buffer slots is connected to a corresponding first gas supply hole, and each of the multiple first buffer slots is used to buffer gas.

4. The preheating vehicle as described in claim 1, characterized in that, The suction plate has multiple second buffer slots on the side near the heating plate. Each of the multiple second buffer slots is connected to a corresponding number of the multiple second air supply holes. All of the multiple second buffer slots are used to buffer gas.

5. The preheating vehicle as described in claim 1, characterized in that, Each of the first suction holes is a strip-shaped structure, and the first suction holes are respectively located in the middle of the suction plate and on the side near the suction plate.

6. The preheating vehicle as described in claim 1, characterized in that, The stripping groove is annular, and the suction plate is provided with a plurality of second suction holes. The plurality of second suction holes are strip-shaped and are located close to the inner side of the stripping groove. The plurality of second suction holes are used to draw air to adsorb the workpiece.

7. The preheating vehicle as described in claim 6, characterized in that, The heating plate is provided with a first air extraction channel and a second air extraction channel on the side near the suction plate. The first air extraction channel is connected to a plurality of first air extraction holes, and the second air extraction channel is connected to a plurality of second air extraction holes.

8. The preheating vehicle as described in claim 1, characterized in that, The heating plate has a receiving groove on the side facing the suction plate, and the receiving groove is configured to receive the suction plate.

9. The preheating vehicle as described in claim 1, characterized in that, The heating assembly further includes multiple heating elements, all of which are inserted into the heating plate and are configured to heat the heating plate.

10. A material transfer device, characterized in that, include: The preheating vehicle as described in any one of claims 1-9; and A drive unit connected to the preheating vehicle, the drive unit being used to drive the preheating vehicle to move.

Images