Hot plate and pressing equipment

Abstract

The utility model belongs to the technical field of hot pressing, and particularly relates to a hot plate and pressing equipment. The hot plate comprises a hot plate body, a protection plate and a tensioning mechanism, the protection plate is arranged on the hot plate body, the end, in the first direction, of the protection plate is connected to the end, in the first direction, of the hot plate body, the tensioning mechanism is connected between the other end, in the first direction, of the protection plate and the other end, in the first direction, of the hot plate body, and the tensioning mechanism is used for tensioning the protection plate. Therefore, the protection plate is fastened on the hot plate body. The tensioning mechanism provides and generates tensioning force, the other end of the protection plate can be subjected to hard limiting, the protection plate is fastened to the hot plate body, the protection plate is made to be tightly attached to the hot plate body all the time and is in the tensioning state, the shutdown adjustment time caused by looseness of the protection plate is shortened, and the protection effect of the protection plate on the hot plate body is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of hot pressing technology, and in particular relates to a hot plate and pressing equipment. Background Technology

[0002] In the PCB (Printed Circuit Board) manufacturing process, hot presses are used to perform operations such as lamination on PCB boards. The hot platen of the hot press is subject to wear during frequent feeding and feeding of materials, leading to a gradual decrease in the accuracy and flatness of the hot platen, which in turn affects the yield rate of the laminated materials. Therefore, protective plates are usually used to protect the hot platen.

[0003] While current protective plates can mitigate wear to some extent, the high-intensity friction between the pressed material and the protective plate surface during material feeding and unloading not only causes wear on the protective plate but also leads to its gradual loosening after prolonged exposure to frictional tension. This results in gaps between the protective plate and the hot plate, severely impacting the protective plate's effectiveness. Utility Model Content

[0004] The technical problem to be solved by this utility model is: to address the issue that the protective effect of existing protective plates is affected after long-term frictional pulling, and to provide a hot plate and pressing device.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a hot plate, including a hot plate body, a protective plate, and a tensioning mechanism. The protective plate covers the heating surface of the hot plate body, and one end of the protective plate along a first direction is connected to one end of the hot plate body along the first direction. The tensioning mechanism is connected between the other end of the protective plate along the first direction and the other end of the hot plate body along the first direction. The tensioning mechanism is used to tension the protective plate so that the protective plate is fastened to the hot plate body.

[0006] Optionally, the tensioning mechanism includes an adjusting member and an elastic member. The adjusting member is connected between the other end of the hot plate body along the first direction and the other end of the protective plate along the first direction. The elastic member is sleeved outside the adjusting member and abuts against the protective plate. The adjusting member can reciprocate along the first direction to adjust the elastic force of the elastic member.

[0007] Optionally, the adjusting member includes a first connecting segment, a second connecting segment, and a third connecting segment. The second connecting segment is connected between the first connecting segment and the third connecting segment. The first connecting segment is movably connected to the protective plate. The third connecting segment is movably connected to the hot plate body. The elastic element is sleeved on the outside of the second connecting segment.

[0008] Optionally, the first connecting segment is threadedly connected to the protective plate, and / or the third connecting segment is threadedly connected to the hot plate body.

[0009] Optionally, the adjusting member further includes a flange connected to the second connecting segment, the flange protruding circumferentially from the outer peripheral surface of the second connecting segment, and the elastic member located between the flange and the protective plate.

[0010] Optionally, at least three adjustment members are provided, which are not on the same straight line, and each adjustment member is connected to the elastic member.

[0011] Optionally, the tensioning mechanism further includes a baffle, one end of the adjusting member is connected to the hot plate body, the other end of the adjusting member passes through the baffle and is connected to the protective plate, and a plurality of elastic members are located between the baffle and the protective plate;

[0012] At least one of the adjusting members reciprocates along the first direction, which can drive the baffle to reciprocate along the first direction to adjust the elastic force of the elastic member.

[0013] Optionally, the adjusting member includes at least a first adjusting member and two second adjusting members, the first adjusting member being located between the two second adjusting members, and the angle between the first adjusting member and the line connecting the two second adjusting members being greater than zero.

[0014] Optionally, the tensioning mechanism further includes a locking member, at least one of the adjusting members is connected to the locking member, and the locking member is used to prevent the adjusting member from disengaging from the protective plate.

[0015] Optionally, the locking element is a locking wire, and the adjusting element is provided with a radial through hole, into which the locking wire is inserted;

[0016] Alternatively, the locking element may be a locking nut, which is threaded onto the end of the adjusting element away from the hot plate body.

[0017] Optionally, multiple tensioning mechanisms are provided and spaced apart along the second direction, where the first direction intersects the second direction.

[0018] Optionally, the protective plate includes a plate body, a first bent edge and a second bent edge, the plate body is connected between the first bent edge and the second bent edge, and the hot plate body is located between the first bent edge and the second bent edge;

[0019] The plate and the hot plate body are stacked together, the first bent edge is connected to one end of the hot plate body, and the tensioning mechanism is connected between the second bent edge and the other end of the hot plate body.

[0020] Optionally, the hot plate further includes a pressure plate, which is stacked with the first bent edge, and the first bent edge is connected between the pressure plate and one end of the hot plate body.

[0021] Optionally, the hot plate further includes two clamping plates, with the second bent edge stacked on top of the two clamping plates and connected between the two clamping plates.

[0022] Optionally, the hot plate further includes multiple support guides, which are installed on the hot plate body or protective plate. The support guides are used to support and guide the pressed material when it enters the hot plate.

[0023] On the other hand, this utility model embodiment provides a pressing device, including a frame and a plurality of hot plates as described above, the plurality of hot plates being spaced apart, a protective plate covering the upper heating surface of the hot plate body, and the protective plate being used to place the pressing material.

[0024] The hot plate provided in this embodiment of the utility model has one end of a protective plate fixedly connected to the hot plate body, and the other end connected to the hot plate body through a tensioning mechanism. The tensioning mechanism provides tension force, which can rigidly limit the other end of the protective plate, securing it to the hot plate body. This ensures the protective plate remains tightly attached to the hot plate body and is in a taut state, reducing downtime for adjustment due to loosening of the protective plate, improving production efficiency, and guaranteeing the protective effect of the protective plate on the hot plate body. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a hot plate provided in one embodiment of the present invention. Figure 1 ;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of a hot plate provided in one embodiment of the present invention. Figure 2 ;

[0028] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0029] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0030] Figure 6 This is a top view of a hot plate provided in an embodiment of the present invention;

[0031] Figure 7 yes Figure 6Enlarged diagram of point D in the middle.

[0032] The reference numerals in the accompanying drawings are as follows:

[0033] 1. Hot plate body;

[0034] 2. Protective plate; 21. Plate body; 22. First bending edge; 23. Second bending edge;

[0035] 3. Tensioning mechanism; 31. Adjusting component; 31a. First adjusting component; 31b. Second adjusting component; 311. First connecting section; 312. Second connecting section; 313. Third connecting section; 32. Flange; 33. Elastic component; 34. Baffle; 35. Locking component;

[0036] 4. Clamping plate; 5. Support guide; 51. Support base; 52. Guide wheel; 6. Pressure plate;

[0037] a) First direction; b) Second direction. Detailed Implementation

[0038] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] like Figures 1 to 7 As shown, an embodiment of the present invention provides a hot plate, including a hot plate body 1, a protective plate 2, and a tensioning mechanism 3. The protective plate 2 covers the heating surface of the hot plate body 1, and the hot plate body 1 is protected by the protective plate 2 to reduce the loss of precision and flatness caused by wear, thereby improving the yield of pressed materials.

[0040] One end of the protective plate 2 along the first direction a is connected to one end of the hot plate body 1 along the first direction a. The tensioning mechanism 3 is connected between the other end of the protective plate 2 along the first direction a and the other end of the hot plate body 1 along the first direction a. The tensioning mechanism 3 is used to tension the protective plate 2 so that the protective plate 2 is fastened to the hot plate body 1, which can effectively prevent the protective plate 2 from shaking or shifting during the use of the hot plate.

[0041] One end of the protective plate 2 is fixedly connected to the hot plate body 1, and the other end is connected to the hot plate body 1 through the tensioning mechanism 3. The tensioning mechanism 3 provides tension force, which can hard limit the other end of the protective plate 2, and fasten the protective plate 2 to the hot plate body 1. This ensures that the protective plate 2 is always in close contact with the hot plate body 1 and is in a tensioned state, reducing downtime for adjustment due to loosening of the protective plate 2, improving production efficiency, and ensuring the protective effect of the protective plate 2 on the hot plate body 1.

[0042] It is understandable that when the installation position of the protection plate 2 has errors or manufacturing errors, the tensioning mechanism 3 can compensate for the errors, so that the protection plate 2 is firmly installed on the hot plate body 1.

[0043] In the actual application of the pressing equipment, the first direction 'a' is the feeding and discharging direction of the pressing material. The two ends of the protective plate 2 along the first direction 'a' are defined as the front end and the rear end, respectively. The pressing material enters and exits the hot plate from the front end. When tightening the protective plate 2, the tensioning mechanism 3 is positioned between the rear end of the protective plate 2 and the rear end of the hot plate body 1, with the front end of the protective plate 2 connected to the front end of the hot plate body 1. Alternatively, the tensioning mechanism 3 is positioned between the front end of the protective plate 2 and the front end of the hot plate body 1, with the rear end of the protective plate 2 connected to the rear end of the hot plate body 1.

[0044] Preferably, the tensioning mechanism 3 is positioned between the rear end of the protective plate 2 and the rear end of the hot plate body 1, so as to avoid increasing the stroke of the pressing material loading and unloading when the tensioning mechanism 3 is positioned at the front end.

[0045] In one embodiment, the protective plate 2 is made of a metal material with a low coefficient of friction, which can reduce the friction between the pressed material and the protective plate 2 and reduce the wear rate when the pressed material is loaded and unloaded.

[0046] In one embodiment, such as Figure 4 , Figure 7 As shown, the tensioning mechanism 3 includes an adjusting member 31 and an elastic member 33. The adjusting member 31 is connected between the other end of the hot plate body 1 along the first direction a and the other end of the protective plate 2 along the first direction a. The adjusting member 31 is supported between the protective plate 2 and the hot plate body 1, serving as a rigid limit. The elastic member 33 is sleeved on the outside of the adjusting member 31 and abuts against the protective plate 2. The adjusting member 31 can reciprocate along the first direction a. When the adjusting member 31 moves, it will compress the elastic member 33 to varying degrees, thereby adjusting the elastic force of the elastic member 33. The elastic force of the elastic member 33 acts on the protective plate 2, causing the protective plate 2 to be subjected to a backward force, thereby ensuring that the protective plate 2 can be properly installed.

[0047] When adjusting the elastic force, when the adjusting member 31 moves along the first direction a towards the protective plate 2, the deformation degree of the elastic member 33 increases, thereby increasing the elastic force of the elastic member 33. Conversely, when the adjusting member 31 moves along the first direction a away from the protective plate 2, the deformation degree of the elastic member 33 gradually decreases, and the elastic force also decreases. In this embodiment, the position of the adjusting member 31 is adjusted to control the magnitude of the elastic force of the elastic member 33, thereby achieving the adjustment of the tension of the protective plate 2.

[0048] In one embodiment, the elastic element 33 may be a spring or a deformable rubber element.

[0049] In one embodiment, such as Figure 7 As shown, the adjusting member 31 includes a first connecting section 311, a second connecting section 312, and a third connecting section 313. The second connecting section 312 is connected between the first connecting section 311 and the third connecting section 313. The first connecting section 311 is movably connected to the protective plate 2 and can move relative to the protective plate 2. The third connecting section 313 is movably connected to the hot plate body 1 and can move relative to the hot plate body 1. An elastic member 33 is sleeved on the outside of the second connecting section 312 and is located between the other end of the hot plate body 1 along the first direction a and the other end of the protective plate 2 along the first direction a.

[0050] Furthermore, the protective plate 2 is provided with a first connecting hole, and the first connecting segment 311 passes through the first connecting hole. The hot plate body 1 is provided with a second connecting hole, and the third connecting segment 313 passes through the second connecting hole. When the adjusting member 31 moves along the first direction a, the first connecting segment 311 moves in the first connecting hole, and the third connecting segment 313 moves in the second connecting hole. The first connecting hole and the second connecting hole have a restrictive effect on both ends of the adjusting member 31, so that the adjusting member 31 is not easy to detach from the hot plate body 1 and the protective plate 2 during the movement.

[0051] In one embodiment, the width of the second connecting segment 312 is greater than the width of the first connecting segment 311, and a step is formed at the junction of the first connecting segment 311 and the second connecting segment 312. This step can limit the installation position and travel of the first connecting segment 311. Preferably, the first connecting segment 311, the second connecting segment 312, and the third connecting segment 313 are all cylindrical, and the diameter of the second connecting segment 312 is greater than the diameter of the first connecting segment 311.

[0052] In one embodiment, the first connecting segment 311 is threadedly connected to the protective plate 2, and / or the third connecting segment 313 is threadedly connected to the hot plate body 1. By rotating the adjusting member 31, the adjusting member 31 can be reciprocated in the first direction a.

[0053] Furthermore, the first connecting section 311 is provided with external threads, and the third connecting section 313 is in clearance fit with the second connecting hole; or, the first connecting section 311 is in clearance fit with the first connecting hole, and the third connecting section 313 is provided with external threads; or, both the first connecting section 311 and the third connecting section 313 are provided with external threads.

[0054] In one embodiment, such as Figure 4 , Figure 7As shown, the adjusting member 31 also includes a flange 32, which is connected to one end of the second connecting section 312 near the third connecting section 313. The flange 32 protrudes circumferentially from the outer peripheral surface of the second connecting section 312, and the elastic member 33 is located between the flange 32 and the protective plate 2. The flange 32 can limit the position of the elastic member 33. When the adjusting member 31 moves along the first direction a, the flange 32 moves, causing the elastic member 33 to be pressed between the flange 32 and the protective plate 2, thereby changing the degree of deformation of the elastic member 33.

[0055] In addition, the flange 32 can also serve as a limiting structure to help restrict the movement range of the adjusting member 31. When the adjusting member 31 moves toward the hot plate body 1 along the first direction a, when the flange 32 contacts the hot plate body 1, it can prevent the adjusting member 31 from continuing to move excessively and prevent the adjusting member 31 from detaching from the protective plate 2.

[0056] In this embodiment, the second connecting segment 312 has a flange 32 at one end near the third connecting segment 313, and the second connecting segment 312 has the aforementioned step at one end near the first connecting segment 311. The flange 32 and the step are used to limit the movement and prevent the adjusting member 31 from detaching from the protective plate 2 and the hot plate body 1.

[0057] In one embodiment, at least three adjustment members 31 are provided and are not on the same straight line, and each adjustment member 31 is connected to an elastic member 33.

[0058] When at least three adjusting members 31 are provided and are not on the same straight line, the three points that are not on the same straight line can define a plane, so that the entire tensioning mechanism 3 can maintain a stable shape and provide more stable support for the protective plate 2. The elastic members 33 connected to each adjusting member 31 can independently generate corresponding elastic forces. These elastic forces interact with each other, avoiding the problem of excessive or insufficient local tension caused by single-point or few-point support.

[0059] Taking three adjusting parts 31 as an example, the three adjusting parts 31 are arranged in a triangle. Each of the three adjusting parts 31 includes a first connecting section 311, a second connecting section 312, and a third connecting section 313.

[0060] In one embodiment, such as Figure 4 , Figure 7As shown, the tensioning mechanism 3 also includes a baffle 34. One end of an adjusting member 31 is connected to the hot plate body 1, and the other end of the adjusting member 31 passes through the baffle 34 and is connected to the protective plate 2. Multiple elastic members 33 are located between the baffle 34 and the protective plate 2. At least one adjusting member 31 reciprocates along the first direction a, which can drive the baffle 34 to reciprocate along the first direction a, thereby adjusting the elastic force of the elastic members 33. Multiple adjusting members 31 are all mounted on the baffle 34. The movement of any one adjusting member 31 can drive the baffle 34 to move along the first direction a. The baffle 34 can compress the multiple elastic members 33, so that the elastic force of the multiple elastic members 33 acts on the protective plate 2. During the reciprocating movement of the baffle 34 along the first direction a, the degree of deformation of the multiple elastic members 33 can be changed, thereby adjusting the elastic force.

[0061] When moving the baffle 34, it can be driven by moving one adjusting member 31 or by moving multiple adjusting members 31. "Multiple" means two or more, and the meaning of "multiple" is the same in all embodiments, and will not be repeated hereafter. Preferably, the baffle 34 is moved by at least three adjusting members 31. Three points that are not on the same straight line can define a plane, which provides more stable support for the protective plate 2.

[0062] In one embodiment, such as Figure 2 , Figure 4 As shown, the adjustment member 31 includes at least a first adjustment member 31a and two second adjustment members 31b. The first adjustment member 31a is located between the two second adjustment members 31b. The angle between the lines connecting the first adjustment member 31a and the two second adjustment members 31b is greater than zero, that is, the first adjustment member 31a and the two second adjustment members 31b are not on the same straight line. They can be connected to form a triangle through one first adjustment member 31a and two second adjustment members 31b.

[0063] During adjustment, rotating the first adjusting member 31a moves the baffle 34, causing it to press against the three elastic members 33. Alternatively, rotating at least one second adjusting member 31b moves the baffle 34, causing it to press against the three elastic members 33. Alternatively, both the first adjusting member 31a and both second adjusting members 31b can rotate. The first adjusting member 31a and both second adjusting members 31b can provide rigid positioning between the protective plate 2 and the hot plate body 1.

[0064] In one embodiment, such as Figure 2 As shown, the tensioning mechanism 3 also includes a locking element 35. At least one adjusting member 31 is connected to the locking element 35, which is used to prevent the adjusting member 31 from disengaging from the protective plate 2. When the adjusting member 31 moves towards the hot plate body 1 along the first direction a, the locking element 35 will abut against the protective plate 2 to form a mechanical stop, thereby limiting the movement range of the adjusting member 31.

[0065] Wherein, the end of the first connecting section 311 away from the second connecting section 312 protrudes from the side surface of the protective plate 2 away from the hot plate body 1, and the locking member 35 is connected at the position where the first connecting section 311 protrudes from the protective plate 2, and the locking member 35 can abut against the side surface of the protective plate 2 away from the hot plate body 1 to form a stop.

[0066] In one embodiment, the locking member 35 is a locking wire, and the adjusting member 31 is provided with a radial through hole, into which the locking wire is inserted. After the locking wire is inserted into the radial through hole, it effectively blocks the adjusting member 31 in the first direction a. When installing the locking wire, it is only necessary to insert it into the radial through hole of the adjusting member 31. The installation and removal process is simple and quick, and it does not occupy too much extra space in the limited space of the hot plate, which helps to maintain the compactness of the overall structure of the hot plate.

[0067] Alternatively, the locking element 35 can be a locking nut, which is threaded onto the end of the adjusting element 31 away from the hot plate body 1. After the nut is tightened, within a certain range of external force, the nut is not easy to loosen on its own and can continuously lock the adjusting element 31.

[0068] In one embodiment, such as Figure 1 As shown, multiple tensioning mechanisms 3 are provided and spaced apart along the second direction b, where the first direction a intersects the second direction b. By using multiple tensioning mechanisms 3, multiple positions of the protective plate 2 can be subjected to tension force, thus preventing situations where the protective plate 2 experiences excessive or insufficient localized force.

[0069] In one embodiment, such as Figure 3 , Figure 5 As shown, the protective plate 2 includes a plate body 21, a first bent edge 22 and a second bent edge 23. The plate body 21 is connected between the first bent edge 22 and the second bent edge 23, and the hot plate body 1 is located between the first bent edge 22 and the second bent edge 23.

[0070] The plate 21 and the hot plate body 1 are stacked together. The first bent edge 22 is connected to one end of the hot plate body 1, and the tensioning mechanism 3 is connected between the second bent edge 23 and the other end of the hot plate body 1. The plate 21 protects the upper surface of the hot plate body 1, the first bent edge 22 protects one end of the hot plate body 1 along the first direction a, and the second bent edge 23 protects the other end of the hot plate body 1 along the first direction a.

[0071] The first bending edge 22 and the second bending edge 23 extend in the same direction, making the protective plate 2 have a U-shaped structure as a whole. The hot plate body 1 is located inside the U-shaped structure, which gives the hot plate body 1 a better protective effect.

[0072] In one embodiment, such as Figure 3 , Figure 4 As shown, the hot plate also includes a pressure plate 6, which is stacked with a first bent edge 22. The first bent edge 22 is connected between the pressure plate 6 and one end of the hot plate body 1.

[0073] The pressure plate 6, the first bent edge 22, and the hot plate body 1 are connected in sequence, and the first bent edge 22 is pressed tightly between the pressure plate 6 and the hot plate body 1, making the connection between the hot plate body 1 and the protective plate 2 more stable and reducing the possibility of the connection loosening due to friction pulling on the protective plate 2 during operation.

[0074] Screw holes are provided at corresponding positions of the pressure plate 6, the first bent edge 22, and the hot plate body 1, and screws are used to fasten and fix the plate by passing through the screw holes.

[0075] In one embodiment, such as Figure 4 , Figure 7 As shown, the hot plate also includes two clamping plates 4. The second bent edge 23 is stacked with the two clamping plates 4. The second bent edge 23 is connected between the two clamping plates 4. The two clamping plates 4 reinforce the second bent edge 23 and reduce the deformation of the second bent edge 23 during the tensioning process of the tensioning mechanism 3.

[0076] Screw holes are provided at the corresponding positions of the second bending edge 23 and the two clamping plates 4, and screws are used to lock and fix the plates by passing through the screw holes.

[0077] In one embodiment, such as Figure 3 , Figure 5 As shown, the hot plate also includes multiple support guides 5, which are installed on the hot plate body 1 or the protective plate 2. The support guides 5 are used to support and guide the pressed material when it enters the hot plate. Preferably, the support guides 5 are located at the front end of the hot plate body 1 or the front end of the protective plate 2.

[0078] When the support guide 5 is installed at the front end of the hot plate body 1, a notch is provided on the first bending plate, the hot plate body 1 is exposed from the notch, and the support guide 5 is set at the notch and connected to the hot plate body 1.

[0079] When the support guide 5 is installed at the front end of the protective plate 2, the support guide 5, the first bent edge 22 and the front end of the hot plate body 1 are fixed by screws.

[0080] In one embodiment, such as Figure 5 As shown, the support guide 5 includes a support base 51 and a guide wheel 52. The support base 51 is installed on the hot plate body 1 or the protective plate 2, and the guide wheel 52 is installed on the support base 51. When the pressed material enters and exits the hot plate, the guide guide supports and guides the pressed material, reduces frictional resistance, and makes the pressed material move smoothly when entering and exiting the hot plate.

[0081] On the other hand, this utility model embodiment provides a pressing device, including a frame and a plurality of hot plates as described in the above embodiment. The plurality of hot plates are arranged at intervals in the vertical direction. A protective plate 2 covers the upper heating surface of the hot plate body 1, and the side of the protective plate 2 facing away from the hot plate body 1 is used to place the pressing material. In PCB production, the pressing material is a stacked PCB assembly, and the hot plates can perform hot pressing on the pressing material.

[0082] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A thermal disc, characterized by, The device includes a heating plate body, a protective plate, and a tensioning mechanism. The protective plate covers the heating surface of the heating plate body. One end of the protective plate along a first direction is connected to one end of the heating plate body along the first direction. The tensioning mechanism is connected between the other end of the protective plate along the first direction and the other end of the heating plate body along the first direction. The tensioning mechanism is used to tension the protective plate so that the protective plate is securely attached to the heating plate body.

2. The thermal disc of claim 1, wherein, The tensioning mechanism includes an adjusting member and an elastic member. The adjusting member is connected between the other end of the hot plate body along the first direction and the other end of the protective plate along the first direction. The elastic member is sleeved on the outside of the adjusting member and abuts against the protective plate. The adjusting member can reciprocate along the first direction to adjust the elastic force of the elastic member.

3. The thermal disc of claim 2, wherein, The adjusting component includes a first connecting segment, a second connecting segment, and a third connecting segment. The second connecting segment is connected between the first connecting segment and the third connecting segment. The first connecting segment is movably connected to the protective plate. The third connecting segment is movably connected to the hot plate body. The elastic element is sleeved on the outside of the second connecting segment.

4. The thermal disc of claim 3, wherein, The first connecting segment is threadedly connected to the protective plate, and / or the third connecting segment is threadedly connected to the hot plate body.

5. The thermal disc of claim 3, wherein, The adjusting member further includes a flange connected to the second connecting segment. The flange protrudes circumferentially from the outer peripheral surface of the second connecting segment, and the elastic element is located between the flange and the protective plate.

6. The thermal disc of claim 2, wherein, The adjustment members are provided in at least three and are not on the same straight line, and each adjustment member is connected to the elastic member.

7. The thermal disc of claim 6, wherein, The tensioning mechanism further includes a baffle, one end of the adjusting member is connected to the hot plate body, the other end of the adjusting member passes through the baffle and is connected to the protective plate, and a plurality of elastic members are located between the baffle and the protective plate; At least one of the adjusting members reciprocates along the first direction, which can drive the baffle to reciprocate along the first direction to adjust the elastic force of the elastic member.

8. The hot plate as described in claim 2, characterized in that, The adjustment component includes at least a first adjustment component and two second adjustment components, wherein the first adjustment component is located between the two second adjustment components, and the angle between the first adjustment component and the line connecting the two second adjustment components is greater than zero.

9. The thermal disc of claim 2, wherein, The tensioning mechanism further includes a locking element, and at least one of the adjusting members is connected to the locking element, which is used to prevent the adjusting member from disengaging from the protective plate.

10. The thermal disc of claim 9, wherein, The locking element is a locking steel wire, and the adjusting element is provided with a radial through hole, into which the locking steel wire is inserted; Alternatively, the locking element may be a locking nut, which is threaded onto the end of the adjusting element away from the hot plate body.

11. The thermal disc of any one of claims 1-10, wherein, The tensioning mechanism is provided in multiple ways and is spaced apart along the second direction, where the first direction intersects the second direction.

12. The thermal disc of any one of claims 1-10, wherein, The protective plate includes a plate body, a first bent edge and a second bent edge, the plate body is connected between the first bent edge and the second bent edge, and the hot plate body is located between the first bent edge and the second bent edge; The plate and the hot plate body are stacked together, the first bent edge is connected to one end of the hot plate body, and the tensioning mechanism is connected between the second bent edge and the other end of the hot plate body.

13. The thermal disc of claim 12, wherein, The hot plate also includes a pressure plate, which is stacked with the first bent edge, and the first bent edge is connected between the pressure plate and one end of the hot plate body.

14. The thermal disc of claim 12, wherein, The hot plate also includes two clamping plates, and the second bent edge is stacked with the two clamping plates, with the second bent edge connected between the two clamping plates.

15. The thermal disc of claim 1, wherein, The hot plate also includes multiple support guides, which are installed on the hot plate body or protective plate. The support guides are used to support and guide the pressed material when it enters the hot plate.

16. A press apparatus characterized by comprising: The device includes a frame and a plurality of hot plates as described in any one of claims 1-15, wherein the plurality of hot plates are spaced apart, and a protective plate covers the upper heating surface of the hot plate body, and the protective plate is used to place the pressing material.

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