Hot press oil cylinder assembly and hot press
By designing a protective cover on the outside of the cylinder plunger of the hot press, the corrosion problem of the cylinder caused by the adhesion of PCB resin halides was solved, thus achieving stable operation of the equipment and a long service life of the hydraulic system.
Patent Information
- Application Number
- CN202520286509.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-21
AI Technical Summary
In existing hot presses, PCB resin halides easily adhere to the plunger surface, causing corrosion of the cylinder seals and guide rings, thus affecting equipment stability.
Design a hot press cylinder assembly, including a hot press cylinder and a cylinder plunger protective cover. The protective cover can be installed on the outside of the plunger and extends and retracts with the plunger. It is made of heat-insulating or flexible material to isolate heat radiation and reduce the adhesion of halides.
It reduces the amount of halogens adhering to the plunger surface, extends the hydraulic oil life, improves the operational stability of the hydraulic system, reduces corrosion of seals and guide rings, and enhances equipment stability.
Smart Images
Figure CN223578374U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to hot press technical field especially relates to a hot press oil cylinder assembly and hot press. BACKGROUND
[0002] Hot press is the key equipment indispensable for manufacturing multilayer PCB, and no matter multilayer PCB used in computer, communication equipment, consumer electronics, industrial control and other fields, it needs to be laminated and formed through hot press. The working principle of hot press is that before hot pressing, the materials such as pre-prepared inner layer core plate, semi-solid sheet (PP sheet) and outer layer copper foil are stacked in a certain order to form a laminated structure to be laminated, then the laminated structure is heated by a heating plate under a specific temperature rising curve and vacuum environment, so that the resin in the semi-solid sheet melts. At the same time, hot press applies a certain pressure to tightly press the materials of each layer together. Under the combined action of heating and pressing, the resin flows and fills into the gap between each layer, so that the copper foil and the insulating medium layer and the insulating medium layer are firmly bonded, and after a period of time, the resin solidifies under high temperature and high pressure, thereby permanently bonding the multilayer materials together to form a whole multilayer printed circuit board.
[0003] As the power core component of hot press, the plunger oil cylinder needs to be frequently maintained and periodically replaced due to frequent extension and contraction operation, and the PCB resin halide is often attached to the surface of the plunger due to different volatile content of PCB resin materials of different manufacturers, and the resin halide is brought into the cylinder body by the extension and contraction operation of the plunger to pollute the hydraulic oil and corrode the sealing ring and guide ring of the oil cylinder. UTILITY MODEL CONTENTS
[0004] The technical problem to be solved by the utility model is that the PCB resin halide is easily attached to the surface of the plunger, which causes corrosion of the sealing ring and guide ring of the oil cylinder, and a hot press oil cylinder assembly and hot press are provided.
[0005] To solve the above problems, on the one hand, the utility model embodiment provides a hot press oil cylinder assembly, which comprises a hot press oil cylinder and a hot press oil cylinder plunger protection cover, the hot press oil cylinder plunger protection cover can be covered on the outside of the plunger of the extended cylinder body of the hot press oil cylinder, the upper end of the hot press oil cylinder plunger protection cover is connected with a movable platform arranged at the top end of the plunger of the hot press oil cylinder, the lower end of the hot press oil cylinder plunger protection cover is connected with the end surface of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate of the press shell of the hot press, and the hot press oil cylinder plunger protection cover can stretch and contract with the plunger of the hot press oil cylinder.
[0006] As a further improvement of the above technical solution:
[0007] Optionally, the hot press oil cylinder plunger protection cover has wave creases that can stretch and contract with the plunger of the hot press oil cylinder.
[0008] Optionally, the hot press oil cylinder plunger protection cover is a thermal protection cover.
[0009] Optionally, the thermal protection cover is a ternary ethylene-propylene rubber protection cover or a butyronitrile rubber protection cover.
[0010] Optionally, the radial dimension of the hot press oil cylinder plunger protection cover is greater than the radial dimension of the plunger of the hot press oil cylinder.
[0011] Optionally, the hot press oil cylinder plunger protection cover is an inflatable protection cover, and the hot press oil cylinder plunger protection cover is in sealing connection with the movable platform at the top end of the plunger of the hot press oil cylinder and the end face of the cylinder body of the hot press oil cylinder respectively.
[0012] In another aspect, the utility model provides a kind of hot press, including press shell and the hot press oil cylinder assembly as above, the cylinder body of the hot press oil cylinder is installed on the press shell, and the plunger of the hot press oil cylinder can be stretched into the press shell.
[0013] As further improvement of the above technical solution:
[0014] Optionally, the press shell includes upper support plate, lower support plate, first side plate, second side plate, front warehouse door, vacuum warehouse and rear warehouse door, the first side plate and the second side plate are opposite along the first direction, the front warehouse door and the rear warehouse door are opposite along the second direction, the upper support plate and the lower support plate are opposite along the up-down direction, the upper support plate is fixed on the top of the first side plate and the second side plate, the lower support plate is fixed on the bottom of the first side plate and the second side plate, the front warehouse door is connected on one side of the first side plate and the second side plate along the second direction, the vacuum warehouse is fixed on the other side of the first side plate and the second side plate along the second direction, the rear warehouse door is fixed on the side of the vacuum warehouse away from the front warehouse door, and the cylinder body of the hot press oil cylinder is installed on the lower support plate.
[0015] Optionally, the upper end of the hot press oil cylinder plunger protection cover is connected with the movable platform arranged at the top end of the plunger of the hot press oil cylinder, and the lower end of the hot press oil cylinder plunger protection cover is connected with the end face of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate.
[0016] Optionally, the hot press oil cylinder plunger protection cover is an inflatable protection cover, and the hot press oil cylinder plunger protection cover is in sealing connection with the movable platform at the top end of the plunger of the hot press oil cylinder and the end face of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate respectively.
[0017] Compared with the prior art, the hot press oil cylinder assembly and the hot press have at least the following beneficial effects: during use, the hot press oil cylinder plunger protection cover is arranged on the outer side of the plunger of the extended cylinder body of the hot press oil cylinder, the upper end of the hot press oil cylinder plunger protection cover is connected with the movable platform arranged at the top end of the plunger of the hot press oil cylinder, and the lower end of the hot press oil cylinder plunger protection cover is connected with the upper surface of the lower support plate of the press shell body of the hot press or the end surface of the cylinder body of the hot press oil cylinder; during operation of the hot press, the hot press oil cylinder plunger protection cover is retracted and extended with the plunger of the hot press oil cylinder, and the PCB resin material will generate halides under the high-temperature and high-pressure environment of the hot press; since the outer side of the plunger of the extended cylinder body of the hot press oil cylinder is covered with the hot press oil cylinder plunger protection cover, the hot press oil cylinder plunger protection cover can reduce the amount of halides attached to the surface of the plunger, thereby reducing the amount of halides brought into the cylinder body by the retraction and extension operation of the plunger to pollute the hydraulic oil, prolonging the service life of the hydraulic oil, improving the stability of the operation of the hydraulic system, reducing the corrosion degree of the sealing ring and the guide ring of the oil cylinder, and improving the stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.
[0019] Figure 1 is a side cross-sectional structure schematic diagram of the hot press provided in an embodiment of the present application;
[0020] Figure 2 is a front cross-sectional structure schematic diagram of the hot press provided in an embodiment of the present application Figure 1 ;
[0021] Figure 3 is a front cross-sectional structure schematic diagram of the hot press provided in an embodiment of the present application Figure 2 ;
[0022] Figure 4 is a schematic diagram of heat radiation in the press shell body of the hot press provided in an embodiment of the present application.
[0023] The reference signs in the description are as follows:
[0024] 1-hot press oil cylinder plunger protection cover, 2-hot press oil cylinder, 21-cylinder body, 22-plunger, 23-movable platform, 3-press shell body, 31-upper support plate, 32-lower support plate, 33-first side plate, 34-second side plate, 35-front warehouse door, 36-vacuum warehouse, 37-rear warehouse door, 38-hot pressing plate. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0026] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0027] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] As shown in Figures 1 to 4 An embodiment of the utility model provides a hot press oil cylinder plunger protection cover 1, which can be covered on the outside of the plunger 22 of the cylinder body 21 of the hot press oil cylinder 2, the upper end of the hot press oil cylinder plunger protection cover 1 can be connected with the movable platform 23 arranged at the top end of the plunger 22 of the hot press oil cylinder 2, the lower end of the hot press oil cylinder plunger protection cover 1 can be connected with the end surface of the cylinder body 21 of the hot press oil cylinder 2 or the upper surface of the lower support plate 32 of the press shell 3 of the hot press, and the hot press oil cylinder plunger protection cover 1 can be telescoped with the plunger 22 of the hot press oil cylinder 2.
[0029] In an embodiment, the hot press oil cylinder plunger protection cover 1 is a cylindrical structure, and the cylindrical hot press oil cylinder plunger protection cover 1 is covered on the outside of the plunger 22 of the cylinder body 21 of the hot press oil cylinder 2. Of course, it can be understood that the hot press oil cylinder plunger protection cover 1 can also have other structures, for example, a cuboid structure with a square cross section.
[0030] In use, the plunger protection cover 1 of the hot press cylinder is placed over the outside of the plunger 22 extending from the cylinder body 21 of the hot press cylinder 2. The upper end of the plunger protection cover 1 can be connected to the movable platform 23 located at the top of the plunger 22 of the hot press cylinder 2, and the lower end of the plunger protection cover 1 can be connected to the end face of the cylinder body 21 of the hot press cylinder 2 or the upper surface of the lower support plate 32 of the press housing 3 of the hot press. When the hot press is working, the plunger protection cover 1 extends and retracts with the plunger 22 of the hot press cylinder 2. Resin B will produce halides under the high temperature and high pressure environment of the hot press. Since the plunger 22 extending out of the cylinder body 21 of the hot press cylinder 2 is covered with a hot press cylinder plunger protection cover 1, the hot press cylinder plunger protection cover 1 can reduce the amount of halides adhering to the surface of the plunger 22, thereby reducing the amount of halides that are brought into the cylinder body 21 to contaminate the hydraulic oil during the extension and retraction of the plunger 22, extending the life of the hydraulic oil, improving the stability of the hydraulic system, and reducing the corrosion of the cylinder seals and guide rings, thus improving the stability of the equipment.
[0031] Since the plunger protection cover 1 of the hot press cylinder needs to be able to extend and retract with the plunger 22 of the hot press cylinder 2, in one embodiment, the plunger protection cover 1 has corrugated pleats that can extend and retract with the plunger 22 of the hot press cylinder 2. When the plunger 22 of the hot press cylinder 2 extends, the plunger protection cover 1 extends accordingly, and the corrugated pleats of the plunger protection cover 1 extend and unfold; when the plunger 22 of the hot press cylinder 2 retracts, the plunger protection cover 1 retracts accordingly, and the corrugated pleats of the plunger protection cover 1 retract and fold.
[0032] Of course, it is understandable that the plunger protection cover 1 of the hot press cylinder can also be other structures that can extend and retract with the plunger 22 of the hot press cylinder 2. For example, the plunger protection cover 1 of the hot press cylinder can be made of flexible material. When the plunger 22 of the hot press cylinder 2 extends, the plunger protection cover 1 of the hot press cylinder is stretched and extended accordingly; when the plunger 22 of the hot press cylinder 2 retracts, the plunger protection cover 1 of the hot press cylinder retracts accordingly.
[0033] like Figure 4 As shown, when the hot press is working, the cylinder plunger 22 is subjected to heat radiation from other heated components within the press cavity, causing the plunger 22's temperature to rise and thus accelerating the wear of the cylinder seal ring. Therefore, in one embodiment, the hot press cylinder plunger protective cover 1 is selected as a heat insulation protective cover. The heat insulation protective cover can isolate the cylinder plunger 22 from heat radiation generated by other heated components within the press cavity, thereby preventing the plunger 22's temperature from rising and extending the service life of the cylinder seal ring.
[0034] In the embodiment, the thermal press oil cylinder plunger protection cover 1 is made of a heat-insulating flexible material such as ethylene-propylene-diene rubber and nitrile rubber, which can insulate the thermal radiation of other heated components in the cavity of the press from the oil cylinder plunger 22 and can stretch and contract with the plunger 22 of the thermal press oil cylinder 2.
[0035] In an embodiment, the radial dimension of the thermal press oil cylinder plunger protection cover 1 is greater than the radial dimension of the plunger 22 of the thermal press oil cylinder 2, so that a gap is formed between the thermal press oil cylinder plunger protection cover 1 and the plunger 22 of the thermal press oil cylinder 2, thereby avoiding the friction between the thermal press oil cylinder plunger protection cover 1 and the plunger 22 of the thermal press oil cylinder 2 when the plunger 22 of the thermal press oil cylinder 2 stretches and contracts, and affecting the stretching and contraction of the plunger 22 of the thermal press oil cylinder 2.
[0036] In addition, the utility model discloses an embodiment provides a kind of thermal press oil cylinder assembly, as shown in Figures 1 to 4 The thermal press oil cylinder assembly includes a thermal press oil cylinder 2 and a thermal press oil cylinder plunger protection cover 1 provided by any of the above embodiments. The specific structure of the thermal press oil cylinder plunger protection cover 1 is referred to the above embodiments. Since the thermal press oil cylinder assembly adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0037] In an embodiment, as shown in Figures 2 to 3 The plunger 22 of the thermal press oil cylinder 2 is provided with a movable platform 23 at the top end, the upper end of the thermal press oil cylinder plunger protection cover 1 is non-sealingly connected with the lower surface of the movable platform 23, and the lower end of the thermal press oil cylinder plunger protection cover 1 is non-sealingly connected with the end surface of the cylinder body 21 of the thermal press oil cylinder 2. When the plunger 22 of the thermal press oil cylinder 2 is stretched to press the hot press plate 38, the thermal press oil cylinder plunger protection cover 1 is stretched accordingly. Correspondingly, the gas outside the thermal press oil cylinder plunger protection cover 1 flows with the gas inside the thermal press oil cylinder plunger protection cover 1 through the connection gap between the upper end of the thermal press oil cylinder plunger protection cover 1 and the lower surface of the movable platform 23, or the connection gap between the lower end of the thermal press oil cylinder plunger protection cover 1 and the end surface of the cylinder body 21 of the thermal press oil cylinder 2, so that the gas pressure outside the thermal press oil cylinder plunger protection cover 1 and the gas pressure inside the thermal press oil cylinder plunger protection cover 1 reach balance. When the plunger 22 of the thermal press oil cylinder 2 is contracted, the thermal press oil cylinder plunger protection cover 1 is contracted accordingly. Correspondingly, the gas outside the thermal press oil cylinder plunger protection cover 1 flows with the gas inside the thermal press oil cylinder plunger protection cover 1 through the connection gap between the upper end of the thermal press oil cylinder plunger protection cover 1 and the lower surface of the movable platform 23, or the connection gap between the lower end of the thermal press oil cylinder plunger protection cover 1 and the end surface of the cylinder body 21 of the thermal press oil cylinder 2, so that the gas pressure outside the thermal press oil cylinder plunger protection cover 1 and the gas pressure inside the thermal press oil cylinder plunger protection cover 1 reach balance.
[0038] The hot press oil cylinder assembly in the embodiment can reduce the amount of halide attached to the surface of the plunger 22, because the upper end of the hot press oil cylinder plunger protection cover 1 is non-sealingly connected with the lower surface of the movable platform 23, and the lower end of the hot press oil cylinder plunger protection cover 1 is non-sealingly connected with the end surface of the cylinder body 21 of the hot press oil cylinder 2.
[0039] In another embodiment, as shown in Figures 2 to 3 The hot press oil cylinder plunger protection cover 1 is sealingly connected with the lower surface of the movable platform 23 at the top end of the plunger 22 of the hot press oil cylinder 2 and the end surface of the cylinder body 21 of the hot press oil cylinder 2. When the plunger 22 of the hot press oil cylinder 2 is elongated to press the hot press plate 38, the hot press oil cylinder plunger protection cover 1 is elongated accordingly, and the hot press oil cylinder plunger protection cover 1 collapses and shrinks towards the side close to the plunger 22 of the hot press oil cylinder 2. When the plunger 22 of the hot press oil cylinder 2 is retracted, the hot press oil cylinder plunger protection cover 1 is retracted accordingly, and the hot press oil cylinder plunger protection cover 1 expands radially towards the side away from the plunger 22 of the hot press oil cylinder 2.
[0040] The hot press oil cylinder assembly in the embodiment can reduce the amount of halide attached to the surface of the plunger 22, because the hot press oil cylinder plunger protection cover 1 is sealingly connected with the lower surface of the movable platform 23 at the top end of the plunger 22 of the hot press oil cylinder 2 and the end surface of the cylinder body 21 of the hot press oil cylinder 2.
[0041] In addition, an embodiment of the utility model provides a kind of hot press, as shown in Figures 1 to 4 The hot press includes press shell 3 and the hot press oil cylinder assembly provided by any of the above embodiments, and the cylinder body 21 of the hot press oil cylinder 2 is installed on the press shell 3, and the plunger 22 of the hot press oil cylinder 2 can be extended into the press shell 3. The specific structure of the hot press oil cylinder assembly is referred to the above embodiments, because the hot press adopts all the technical solutions of the above embodiments, so it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0042] In an embodiment, as shown in Figures 1 to 3As shown, the press housing 3 comprises an upper support plate 31, a lower support plate 32, a first side plate 33, a second side plate 34, a front door 35, a vacuum chamber 36 and a rear door 37, the first side plate 33 and the second side plate 34 are opposite along a first direction, the front door 35 and the rear door 37 are opposite along a second direction, the upper support plate 31 and the lower support plate 32 are opposite along an up-down direction, the upper support plate 31 is fixed on the top of the first side plate 33 and the second side plate 34, the lower support plate 32 is fixed on the bottom of the first side plate 33 and the second side plate 34, the front door 35 is connected on one side of the first side plate 33 and the second side plate 34 along the second direction, the vacuum chamber 36 is fixed on the other side of the first side plate 33 and the second side plate 34 along the second direction, the rear door 37 is fixed on the side of the vacuum chamber 36 away from the front door 35, and the cylinder body 21 of the hot press oil cylinder 2 is installed on the lower support plate 32. The first direction is the left-right direction, and the second direction is the front-rear direction.
[0043] In an embodiment, the upper end of the hot press oil cylinder plunger protection cover 1 is connected with the movable platform 23 arranged on the top end of the plunger 22 of the hot press oil cylinder 2, and the lower end of the hot press oil cylinder plunger protection cover 1 is connected with the end face of the cylinder body 21 of the hot press oil cylinder 2 or the upper surface of the lower support plate 32. The hot press oil cylinder plunger protection cover 1 is selected as a heat insulation protection cover, when the lower end of the hot press oil cylinder plunger protection cover 1 is connected with the upper surface of the lower support plate 32, the heat insulation protection cover can provide heat insulation protection for the cylinder body 21 of the hot press oil cylinder 2 located in the heat insulation protection cover, so as to isolate the cylinder body 21 from the heat radiation generated by other heated components in the press cavity, thereby avoiding the temperature rise of the cylinder body 21, and further prolonging the service life of the oil cylinder sealing ring.
[0044] In another embodiment, the hot press oil cylinder plunger protection cover 1 is an inflatable protection cover, and the hot press oil cylinder plunger protection cover 1 is sealingly connected with the movable platform 23 arranged on the top end of the plunger 22 of the hot press oil cylinder 2 and the end face of the cylinder body 21 of the hot press oil cylinder 2 or the upper surface of the lower support plate 32. The hot press oil cylinder plunger protection cover 1 is selected as a heat insulation protection cover, when the lower end of the hot press oil cylinder plunger protection cover 1 is connected with the upper surface of the lower support plate 32, the heat insulation protection cover can provide heat insulation protection for the cylinder body 21 of the hot press oil cylinder 2 located in the heat insulation protection cover, so as to isolate the cylinder body 21 from the heat radiation generated by other heated components in the press cavity, thereby avoiding the temperature rise of the cylinder body 21, and further prolonging the service life of the oil cylinder sealing ring.
[0045] The above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A hot press ram cylinder assembly characterized by, The hot press oil cylinder and the hot press oil cylinder plunger protection cover, the hot press oil cylinder plunger protection cover can cover the outside of the plunger of the hot press oil cylinder, the upper end of the hot press oil cylinder plunger protection cover is connected with the movable platform arranged at the top end of the plunger of the hot press oil cylinder, the lower end of the hot press oil cylinder plunger protection cover is connected with the end surface of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate of the press shell of the hot press, and the hot press oil cylinder plunger protection cover can be expanded and contracted with the plunger of the hot press oil cylinder.
2. The hot press ram cylinder assembly of claim 1, wherein, The hot press oil cylinder plunger protection cover has a wave wrinkle that can be expanded and contracted with the plunger of the hot press oil cylinder.
3. The hot press ram cylinder assembly of claim 1, wherein, The hot press oil cylinder plunger protection cover is a heat insulation protection cover.
4. The hot press ram cylinder assembly of claim 3, wherein, The heat insulation protection cover is a EPDM protection cover or a nitrile rubber protection cover.
5. The hot press ram cylinder assembly of claim 1, wherein, The radial dimension of the hot press oil cylinder plunger protection cover is greater than the radial dimension of the plunger of the hot press oil cylinder.
6. The hot press ram cylinder assembly of claim 1, wherein, The hot press oil cylinder plunger protection cover is an inflatable protection cover, and the hot press oil cylinder plunger protection cover is respectively and sealingly connected with the movable platform at the top end of the plunger of the hot press oil cylinder and the end surface of the cylinder body of the hot press oil cylinder.
7. A hot press, characterized in that The press shell and the hot press oil cylinder assembly according to any one of claims 1 to 5, the cylinder body of the hot press oil cylinder is installed on the press shell, and the plunger of the hot press oil cylinder can be extended into the press shell.
8. Hot press according to claim 7, characterized in that The press shell includes an upper support plate, a lower support plate, a first side plate, a second side plate, a front door, a vacuum chamber and a rear door, the first side plate and the second side plate are opposite along a first direction, the front door and the rear door are opposite along a second direction, the upper support plate and the lower support plate are opposite along an up-down direction, the upper support plate is fixed on the top of the first side plate and the second side plate, the lower support plate is fixed on the bottom of the first side plate and the second side plate, the front door is connected on one side of the first side plate and the second side plate along the second direction, the vacuum chamber is fixed on the other side of the first side plate and the second side plate along the second direction, the rear door is fixed on the side of the vacuum chamber away from the front door, and the cylinder body of the hot press oil cylinder is installed on the lower support plate.
9. The hot press of claim 8, wherein, The upper end of the hot press oil cylinder plunger protection cover is connected with the movable platform arranged at the top end of the plunger of the hot press oil cylinder, and the lower end of the hot press oil cylinder plunger protection cover is connected with the end surface of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate.
10. The hot press of claim 9, wherein, The hot press oil cylinder plunger protection cover is an inflatable protection cover, and the hot press oil cylinder plunger protection cover is respectively and sealingly connected with the movable platform at the top end of the plunger of the hot press oil cylinder and the end surface of the cylinder body of the hot press oil cylinder or the upper surface of the lower support plate.