Shaping device for crucible tray

Abstract

The utility model relates to a shaping device for a crucible tray, which comprises a heating plate and a shaping block, the upper surface of the heating plate is provided with a tray groove, and the tray groove is used for placing the tray to be subjected to hot-press shaping and uniformly heating the tray; the shaping block is used for performing hot-pressing shaping on a tray to be shaped in the tray groove, and the width of the shaping block is smaller than the transverse width of an inner cavity of the tray; a driving mechanism is further arranged between the shaping block and the heating plate and used for driving the shaping block to conduct hot-pressing shaping on the trays in the tray grooves. According to the utility model, the crucible tray used by the horizontal directional crystallization method can be shaped and recovered by only one person, so that the shaping efficiency is improved, and the manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crucible tray shaping, and particularly relates to a shaping device for a crucible tray. Background Art

[0002] During the crystal growth process by the horizontal directional crystallization method, a rectangular crucible tray is required. Please refer to the attached Figure 1 , this tray is used to carry the crucible and the crystal, preventing damage and pollution caused by the liquid flowing into the furnace chamber due to the cracking of the crucible during the crystal growth process. During the use of this crucible tray, it needs to bear the weight of the entire crucible and the crystal. Therefore, the crucible tray will be deformed after being used several times, which will have an adverse impact on the growth of the next crystal. In order to keep the crucible tray flat during each crystal growth process, it needs to be shaped and restored after being used a certain number of times.

[0003] Currently, for the shaping and restoration of this shaped crucible tray, two people are required to cooperate. One person heats the deformed crucible tray to make it soft, and the other person uses a wooden mallet or a square hammer with a flat surface to knock and shape the deformed part of the crucible tray to make the deformed part flat. The whole process has extremely low efficiency and wastes manpower. Content of the Utility Model

[0004] Aiming at the above deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a shaping device for a crucible tray, avoiding the problems of low efficiency and the need for two people to cooperate during the shaping and restoration of the crucible tray used in the horizontal directional crystallization method, and achieving the effects of improving the shaping efficiency and saving manpower.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A shaping device for a crucible tray includes a heating plate and a shaping block. A tray groove is formed on the upper surface of the heating plate, and the tray groove is used to place the tray to be shaped by hot pressing and make it evenly heated;

[0007] The shaping block is used to hot-press and shape the tray to be shaped in the tray groove, and the width of the shaping block is smaller than the transverse width of the inner cavity of the tray;

[0008] A driving mechanism is further provided between the shaping block and the heating plate, and the driving mechanism is used to drive the shaping block to hot-press and shape the tray in the tray groove.

[0009] To further improve the above technical solution, one end of the tray groove extends along the length direction of the tray groove to penetrate through the side surface of the heating plate and form an inlet of the tray groove;

[0010] The driving mechanism includes a mounting part and a handle. The mounting part is spaced from the inlet, and the shaping block is detachably connected to the mounting part and is opposite to the inlet; the lower surface of the shaping block is higher than the bottom wall of the tray groove.

[0011] The handle is used to pull the shaping block along the length direction of the tray groove so that the shaping block enters the tray groove to perform hot pressing and shaping on the tray; the handle is also used to drive the shaping block to rotate with the width direction of the tray groove as the axis direction so that the shaping block can press the tray.

[0012] Further, the driving mechanism is a square frame. The distance between the two frame sides of the square frame in the width direction of the tray groove is adapted to the length value of the heating plate in the width direction of the tray groove, and the heating plate can slide along the length direction of the tray groove within the square frame.

[0013] Chutes are vertically and inwardly formed on the end faces at both ends of the heating plate, and the length direction of the chutes is consistent with the length direction of the tray groove.

[0014] Connecting holes are formed through the side faces of the square frame corresponding to the chutes, and the connecting holes are provided with internal threads; the rod part of a screw passes through the internal threads on the square frame and then extends into the adjacent chute correspondingly and can slide along the length direction of the chute.

[0015] The frame side of the square frame opposite to the inlet forms the mounting part, and the frame side opposite to the mounting part forms the handle.

[0016] Further, a horizontal connecting rod is connected to the side of the shaping block away from the heating plate. The connecting rod movably passes through the mounting part along the length direction of the tray groove and positions the shaping block within the square frame.

[0017] A number of vertical gear holes are formed through the connecting rod at intervals along the length direction, and a mounting hole is vertically formed through the upper surface of the mounting part, and the mounting hole is provided with internal threads.

[0018] The connecting rod is located within the mounting part and aligns the gear holes on the connecting rod with the mounting hole. A fixing bolt vertically passes through the mounting part and the connecting rod and is threadedly connected to the mounting hole to realize the detachable connection of the shaping block to the square frame.

[0019] Further, the distance between the mounting part and the handle is twice the length value of the heating plate in the length direction of the tray groove, and the connecting hole is located in the middle of the square frame side where it is located.

[0020] Further, on the upper surface of the heating plate, nut chutes are vertically formed at positions close to the two end chutes respectively. The nut chutes communicate with the chutes, and the length direction and length of the nut chutes are the same as those of the chutes. A nut is located in the nut chute and is threadedly connected to the screw rod to prevent the screw rod from sliding out of the chute.

[0021] Further, three heating plates are arranged side by side along the width direction of the tray chute, and there are three corresponding shaping blocks, which are arranged in one-to-one correspondence with the respective tray chutes;

[0022] The three heating plates are integrally formed.

[0023] Further, a plurality of circular holes are evenly distributed on the lower surface of the heating plate, and the circular holes are used for placing heating tubes;

[0024] A part of the circular holes avoid the tray chute, the chute and the nut chute and extend upward through the upper surface of the heating plate to form through holes;

[0025] The shaping device further includes a workbench. The heating plate is placed on the workbench. A plurality of heating tubes are evenly distributed on the upper surface of the workbench. The positions and lengths of the heating tubes are correspondingly and adaptively installed with the respective circular holes on the heating plate; the heating tubes passing through the through holes extend out of the upper surface of the heating plate, thereby fixing the heating plate to the workbench;

[0026] The width of the workbench is adapted to the length value of the heating plate in the length direction of the tray chute.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] 1. For a shaping device for a crucible tray of the utility model, during use, the tray to be hot-pressed and shaped is placed in the tray chute, the heating plate and the tray are heated, so that the tray is softened in the tray chute; under the drive of the drive mechanism, the shaping block performs hot-pressing and shaping on the deformed part of the tray; the whole process only requires one person to operate, and the crucible tray used in the horizontal directional crystallization method can be shaped and restored, improving the shaping efficiency and saving manpower at the same time.

[0029] 2. For a shaping device for a crucible tray of the utility model, the screw rod can be used as both a slider and a rotating shaft. Pull the handle, so that the screw rod slides in the chute, thereby driving the shaping block into the tray chute; when pressing and shaping the deformed part, pull the handle upward, and the square frame can be rotated downward around the axis of the screw rod, thereby driving the shaping block to press the deformed part. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the tray described in the background art;

[0031] Figure 2Schematic structural diagram of a shaping device for a crucible tray in an embodiment;

[0032] Figure 3 Schematic structural diagram (front view) of a heating plate in an embodiment;

[0033] Figure 4 Schematic structural diagram (bottom view) of a heating plate in an embodiment;

[0034] Figure 5 Schematic structural diagram of a square frame in an embodiment;

[0035] Figure 6 Schematic structural diagram of a shaping block (including a connecting rod) in an embodiment;

[0036] Among them, there are tray 1, heating plate 2, tray groove 201, inlet 2011, chute 202, nut chute 203, round hole 204, screw rod 21, nut 22, shaping block 31, connecting rod 32, gear hole 321, square frame 4, connection hole 401, mounting part 402, mounting hole 4021, handle 403, and fixing bolt 5. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] The following further details the specific embodiments of the present utility model in conjunction with the drawings.

[0040] Please refer to Figure 2 , a shaping device for a crucible tray in a specific embodiment, includes a heating plate 2 and a shaping block 31. The shaping block is a rectangular block. A tray groove 201 is formed on the upper surface of the heating plate 2. The tray groove 201 is used to place the tray 1 to be hot-pressed and shaped and make it uniformly heated.

[0041] The shaping block 31 is used to hot-press and shape the tray 1 to be shaped in the tray groove 201; the width of the shaping block 31 is smaller than the transverse width of the inner cavity of the tray 1.

[0042] A driving mechanism is further provided between the shaping block 31 and the heating plate 2. The driving mechanism is used to drive the shaping block 31 to hot-press and shape the tray 1 in the tray groove 201. The width of the shaping block 31 is smaller than the transverse width of the inner cavity of the tray 1.

[0043] An apparatus for shaping a crucible tray according to an embodiment, when in use, places the tray 1 to be hot-pressed and shaped in the tray groove 201, heats the heating plate 2 and the tray 1, so that the tray 1 softens in the tray groove 201; under the drive of the drive mechanism, the shaping block 31 performs hot-pressing and shaping on the deformed part of the tray 1; the whole process only requires one person to operate, and can shape and restore the crucible tray 1 used in the horizontal directional crystallization method, improving the shaping efficiency and saving manpower at the same time.

[0044] Please refer to Figure 2 and Figure 3 , wherein, one end of the tray groove 201 extends along the length direction of the tray groove 201 to penetrate the side surface of the heating plate 2 and form an inlet 2011 of the tray groove 201;

[0045] The drive mechanism includes a mounting part 402 and a handle 403. The mounting part 402 is arranged at an interval from the inlet 2011. The shaping block 31 is detachably connected to the mounting part 402 and is opposite to the inlet 2011; the lower surface of the shaping block 31 is higher than the bottom wall of the tray groove 201;

[0046] The handle 403 is used to pull the shaping block 31 along the length direction of the tray groove 201 so that the shaping block 31 enters the tray groove 201 to perform hot-pressing and shaping on the tray 1; the handle 403 is also used to drive the shaping block 31 to rotate with the width direction of the tray groove 201 as the axis direction so that the shaping block 31 can press the tray 1.

[0047] In this way, when the tray 1 softens in the tray groove 201, pull the handle 403 to make the shaping block 31 move towards the tray groove 201. After reaching the position where the deformed part of the tray 1 is located, then drive the handle 403 to make the shaping block 31 press downwards to perform hot-pressing and shaping on the deformed part.

[0048] Please refer to Figures 2 - 6 , during implementation, the drive mechanism is a square frame 4. The distance between the two frame sides of the square frame 4 in the width direction of the tray groove 201 is adapted to the length value of the heating plate 2 in the width direction of the tray groove 201. The heating plate 2 can slide along the length direction of the tray groove 201 in the square frame 4;

[0049] Chute grooves 202 are vertically and inwardly opened on the end faces at both ends of the heating plate 2. The length direction of the chute grooves 202 is the same as the length direction of the tray groove 201;

[0050] A connection hole 401 is penetrated and opened on the side surface of the square frame 4 corresponding to the chute groove 202. The connection hole 401 is provided with internal threads; the rod part of a screw rod 21 passes through the internal threads on the square frame 4 and correspondingly extends into the adjacent chute groove 202 and can slide along the length direction of the chute groove 202;

[0051] On the square frame 4, the frame side opposite to the inlet 2011 forms the installation part 402, and the frame side opposite to the installation part 402 forms the handle 403.

[0052] In this way, the screw rod 21 can be used as both a slider and a rotating shaft, as Figure 2 and Figure 5 shown. Pull the handle 403, so that the screw rod 21 slides in the chute 202, thereby driving the shaping block 31 into the tray groove 201; when pressing is required, pull the handle 403 upward, and the square frame 4 can be rotated downward around the axis of the screw rod 21, thereby driving the shaping block 31 to press the deformed part.

[0053] Wherein, a horizontal connecting rod 32 is connected to the side of the shaping block 31 away from the heating plate 2. The connecting rod 32 movably passes through the installation part 402 along the length direction of the tray groove 201 and positions the shaping block 31 inside the square frame 4;

[0054] A plurality of vertical gear holes 321 are vertically penetrated at intervals along the length direction of the connecting rod 32. An installation hole 4021 is vertically penetrated through the upper surface of the installation part 402, and the installation hole 4021 is provided with internal threads;

[0055] The connecting rod 32 is located inside the installation part 402 and aligns the gear holes 321 on the connecting rod 32 with the installation hole 4021. A fixing bolt 5 vertically passes through the installation part 402 and the connecting rod 32 and is threadedly connected to the installation hole 4021 to realize the detachable connection of the shaping block 31 to the square frame 4.

[0056] In this way, the shaping block 31 is detachably connected to the square frame 4 through the connecting rod 32, and the length of the connecting rod 32 inside the square frame 4 can be adjusted according to actual needs; when the deformed part of the tray 1 is located at the inner end of the tray groove 201, align the gear hole 321 close to the free end of the connecting rod 32 with the installation hole 4021 and then connect. If the deformed part is mainly located in the area of the tray groove 201 close to the inlet 2011, the gear hole 321 close to the shaping block 31 can be selected.

[0057] Wherein, the distance between the installation part 402 and the handle 403 is twice the length value of the heating plate 2 in the length direction of the tray groove, and the connection hole 401 is located in the middle of the side of the square frame where it is located.

[0058] In this way, as Figure 2As shown, before starting, the screw rod 21 slides to the front end in the chute 202, and there is still a distance between the shaping block 31 and the inlet 2011 of the tray groove 201, which is convenient for placing the tray 1 into the tray groove 201; when hot pressing and shaping can be carried out, then slide the screw rod 21 backward along the chute 202 to ensure that the shaping block 31 can perform hot pressing and shaping on the part of the tray 1 away from the inlet 2011.

[0059] Wherein, on the upper surface of the heating plate 2, nut chutes 203 are vertically opened at positions close to the two ends of the chute 202 respectively. The nut chutes 203 are communicated with the chute 202. The length direction and length of the nut chutes 203 are the same as those of the chute 202. A nut 22 is located in the nut chute 203 and is threadedly connected with the screw rod 21 to prevent the screw rod 21 from sliding out of the chute 202.

[0060] In this way, in order to further ensure the connection stability between the square frame 4 and the heating plate 2, nut chutes 203 are further provided on the heating plate 2. The free end of the screw rod 21 extends into the chute 202, and the nut 22 and the screw rod 21 are threadedly connected through the nut chute 203. When using this shaping device, even if the square frame 4 is rotated, the screw rod 21 will not slide out of the chute 202.

[0061] During implementation, as Figure 2 shown, three heating plates 2 are arranged side by side along the width direction of the tray groove 201, and the corresponding shaping blocks 31 are three and are arranged in one-to-one correspondence with each tray groove 201;

[0062] The three heating plates 2 are integrally formed.

[0063] In this way, the entire shaping device can be used for hot pressing and shaping of three trays 1, further improving the shaping efficiency. It can be understood that the three heating plates 2 are integrally formed into an entire heating plate 2. The length direction of the heating plate 2 corresponds to the width direction of the tray groove 201, and the width direction of the heating plate 2 corresponds to the length direction of the tray groove 201.

[0064] Wherein, a plurality of round holes 204 are evenly distributed on the lower surface of the heating plate 2, and the round holes 204 are used for placing heating tubes;

[0065] A part of the round holes 204 avoid the positions of the tray groove 201, the chute 202 and the nut chute 203 and extend upward through the upper surface of the heating plate 2 to form through holes;

[0066] The shaping device further includes a workbench (not shown in the figure). The heating plate is placed on the workbench. A plurality of heating tubes (not shown in the figure) are evenly distributed on the upper surface of the workbench. The positions and lengths of the heating tubes are correspondingly adapted to each round hole 201; the heating tubes passing through the through holes extend out of the upper surface of the heating plate 2 so as to fix the heating plate 2 to the workbench;

[0067] The width of the workbench is adapted to the length value of the heating plate 2 in the length direction of the tray groove 201.

[0068] In this way, the heating tubes corresponding to the partial round holes 204 of the through holes will pass through these round holes 204, so as to relatively fix the heating plate 2 and the workbench, preventing the heating plate 2 from sliding horizontally on the workbench. The remaining heating tubes are shorter and are correspondingly located in the round holes 204 of the non-through holes to uniformly heat the heating plate 2; the width of the workbench is adapted to the width of the heating plate 2, that is to say, both sides of the square frame 4 along the length direction of the tray groove 201 are suspended, which is convenient for the staff to operate the rotating handle 403; understandably, the length of the fixing bolt 5 should not be too long to avoid its lower end being lower than the lower surface of the heating plate 2.

[0069] The usage method of a shaping device for a crucible tray of the present utility model is as follows:

[0070] S1. Install the heating plate 2 of the shaping device on the workbench, so that the heating tubes on the workbench correspond one by one to the round holes 204 at the bottom of the heating plate 2, and fix the heating plate 2 and the workbench through the heating tubes passing through the through holes;

[0071] S2. Put the trays 1 to be shaped into the tray grooves 201 one by one, and adjust the positions of the shaping blocks 31 on the installation part 402 corresponding to the deformed parts of each tray;

[0072] S3. Turn on the power supply to energize the heating tubes, and uniformly heat the heating plate 2 and each tray through the heating tubes. After the temperature rises to soften the trays, pull the handle 403 in the direction where the deformed parts of the trays are located, so that the shaping blocks 31 are above the deformed parts, and pull up the handle 403 to press and shape the deformed parts of the trays with the shaping blocks 31;

[0073] S4. After the trays are restored to be flat, turn off the power supply. After the trays are cooled, take them out to complete the shaping.

[0074] In this way, the heating plate and the trays to be shaped can be uniformly heated, and then by operating a handle 403, the hot pressing and shaping of each tray can be completed. The whole process only requires one person to operate, and the crucible trays used in the horizontal directional crystallization method can be shaped and restored, improving the shaping efficiency and saving manpower at the same time.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A shaping device for a crucible tray, characterized in that: It includes a heating plate and a shaping block, the shaping block is a rectangular block, the upper surface of the heating plate is provided with a tray groove, the tray groove is used to place the crucible tray to be hot-pressed and shaped and make it evenly heated; The shaping block is used for hot pressing and shaping the crucible tray to be shaped in the tray slot, and the width of the shaping block is smaller than the lateral width of the inner cavity of the crucible tray; A driving mechanism is also provided between the shaping block and the heating plate, and the driving mechanism is used to drive the shaping block to perform hot pressing shaping on the crucible tray in the tray groove.

2. A shaping device for a crucible tray according to claim 1, characterized in that: One end of the tray slot extends along the length direction of the tray slot to penetrate the side of the heating plate and form an inlet of the tray slot; The driving mechanism comprises a mounting portion and a handle, wherein the mounting portion is spaced apart from the inlet, and the shaping block is detachably connected to the mounting portion and is opposite to the inlet; the lower surface of the shaping block is higher than the bottom wall of the tray slot; The handle is used to pull the shaping block along the length direction of the tray slot so that the shaping block enters the tray slot to perform hot pressing shaping on the crucible tray; the handle is also used to drive the shaping block to rotate with the width direction of the tray slot as the axial direction so that the shaping block can press the crucible tray.

3. A shaping device for a crucible tray according to claim 2, characterized in that: The driving mechanism is a square frame, the distance between the two frame edges of the square frame in the width direction of the tray slot is adapted to the length value of the heating plate in the width direction of the tray slot, and the heating plate can slide in the square frame along the length direction of the tray slot; The two end surfaces of the heating plate are provided with slide grooves extending vertically inward, and the length direction of the slide grooves is consistent with the length direction of the tray slots; The square frame has a connecting hole on the side corresponding to the slide groove, and the connecting hole has an internal thread; a screw rod passes through the internal thread on the square frame and then extends into the slide groove on the adjacent side and can slide along the length direction of the slide groove; The frame edge on the square frame opposite to the inlet is formed as the mounting portion, and the frame edge opposite to the mounting portion is formed as the handle.

4. A shaping device for a crucible tray according to claim 3, characterized in that: A horizontal connecting rod is connected to one side of the shaping block away from the heating plate, and the connecting rod moves through the mounting portion along the length direction of the tray slot and enables the shaping block to be located in the square frame; The connecting rod is provided with a plurality of vertical shift holes at intervals along the length direction, and the upper surface of the mounting portion is provided with a mounting hole vertically extending therethrough, and the mounting hole is provided with an internal thread; The connecting rod is located in the mounting portion and the shift hole on the connecting rod is aligned with the mounting hole. A fixing bolt vertically passes through the mounting portion and the connecting rod and is threadedly connected with the mounting hole to realize the detachable connection of the shaping block to the square frame.

5. A shaping device for a crucible tray according to claim 4, characterized in that: The distance between the mounting portion and the handle is twice the length of the heating plate in the length direction of the tray slot, and the connecting hole is located in the middle of the side of the square frame where it is located.

6. A shaping device for a crucible tray according to claim 4, characterized in that: The upper surface of the heating plate is vertically provided with nut slide grooves near the two end slide grooves, the nut slide grooves are connected with the slide grooves, the length direction and length of the nut slide grooves are consistent with the slide grooves, a nut is located in the nut slide groove and is threadedly connected with the screw to prevent the screw from slipping out of the slide groove.

7. A shaping device for a crucible tray according to claim 5 or 6, characterized in that: There are three heating plates arranged side by side along the width direction of the tray slot, and there are three corresponding shaping blocks arranged one-to-one with each tray slot; The three heating plates are formed in one piece.

8. A shaping device for a crucible tray according to claim 7, characterized in that: A plurality of circular holes are evenly distributed on the lower surface of the heating plate, and the circular holes are used to place the heating tubes; A portion of the circular hole avoids the tray slot, the slide slot and the nut slide slot and extends upward through the upper surface of the heating plate to form a through hole; The shaping device also includes a workbench, the heating plate is placed on the workbench, a plurality of heating tubes are evenly distributed on the upper surface of the workbench, and the positions and lengths of the heating tubes are adapted and installed corresponding to the circular holes on the heating plate; the heating tubes passing through the through holes extend out of the upper surface of the heating plate to fix the heating plate and the workbench; The width of the workbench is adapted to the length of the heating plate in the length direction of the tray slot.

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