Hot press

Abstract

The utility model discloses a hot press, which is characterized in that an oil receiving disc is additionally arranged on an outer ring of a press plunger, an oil scraping sealing ring is additionally arranged below the outer ring of the press plunger of the hot press and the oil receiving disc, and hydraulic oil is added in the oil receiving disc. In each ascending process of the press plunger, a layer of oil film is coated on the surface of the upward-probing press plunger by hydraulic oil in the oil receiving disc, so that the surface of the upward-probing press plunger is kept wet, volatile matters generated in the hot pressing process are not easy to adhere to the surface of the upward-probing press plunger, and the abnormal quality of equipment or products caused by long-term accumulation of the volatile matters can be avoided; in each descending process of the press plunger, the oil scraping sealing ring can scrape attachments such as hydraulic oil on the surface of the press plunger, and an oil film on the surface of the press plunger can return to the oil receiving disc when the press plunger 4 descends, so that a press cavity cannot be polluted.

Description

Technical Field

[0001] The utility model relates to a copper clad plate manufacturing technology, in particular to a hot press. Background Art

[0002] Currently, in the electronic circuit copper-clad laminate manufacturing industry, the hot platen lifting and pressing plungers of vacuum hot presses are exposed, without the ability to add protective covers. This can lead to the formation of adhesive deposits on the surfaces over long periods of use. This is particularly true for IC substrates, vinyl substrates, and high-frequency, high-speed substrates that use kraft paper as a buffer and heat-slowing material during the pressing process. The kraft paper pulp and adhesive sheet materials, when exposed to high temperatures, produce volatiles. These volatiles adhere to the press plunger surface, causing long-term scaling, lifting and lowering vibration, and accelerated wear of the clamping flange. Foreign matter attached to the press plunger surface and debris from friction with the clamping flange can be carried into the hydraulic system by the press plunger, causing pressure anomalies, affecting equipment stability and product quality, and requiring frequent manual cleaning. When the hot press uses two or four cylinders, adhesive deposits on the press plunger surface can cause the plungers to rise and fall asynchronously, resulting in hot plate vibration or abnormal noise, seriously affecting the quality of the copper-clad laminate pressing and the stability of equipment operation. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a hot press, wherein the surface of the press plunger is not easy to form glue, and the press plunger surface can be kept clean and lubricated without frequent manual cleaning, and the press plunger can be lifted and lowered steadily and smoothly.

[0004] In order to solve the above technical problems, the utility model provides a hot press, which includes a press body, a press cavity, a press cylinder sleeve, a press plunger, a tightening flange, an oil receiving pan and an oil scraping sealing ring;

[0005] The press plunger is sleeved in the press cylinder and can move up and down relative to the press cylinder;

[0006] The press cylinder sleeve is fixed on the press body;

[0007] The press cavity is fixedly connected to the press cylinder sleeve and is located above the press cylinder sleeve;

[0008] The clamping flange, oil receiving pan and oil scraper sealing ring are installed and fixed in the press cavity;

[0009] The clamping flange is coaxially sleeved outside the press plunger and fixed on the press cylinder sleeve. After the lower side of the axial center side of the clamping flange is tightened, the contact surface between the press cylinder sleeve and the press plunger is sealed.

[0010] The bottom plate of the oil receiving pan is annular;

[0011] The inner diameter of the annular bottom plate of the oil receiving pan is larger than the inner diameter of the oil scraper seal and the outer diameter of the press plunger;

[0012] The outer diameter of the oil scraper seal is larger than the inner diameter of the upper side of the clamping flange;

[0013] The outer diameter of the oil scraper seal is smaller than the outer diameter of the upper side of the clamping flange and the outer diameter of the annular bottom plate of the oil receiving pan;

[0014] The bottom plate of the oil receiving pan is coaxially sleeved outside the plunger of the press and fixed to the clamping flange;

[0015] The inner wall of the oil scraper seal ring is in contact with the outer wall of the press plunger and is coaxially sleeved outside the press plunger;

[0016] The lower side of the oil scraper seal ring is sealed against the upper side of the clamping flange;

[0017] The upper side of the oil scraper seal ring is sealed against the lower side of the annular bottom plate of the oil receiving pan;

[0018] The adjacent parts of the oil scraping seal ring, the press plunger and the bottom plate of the oil receiving pan form an annular oil scraping groove around the press plunger;

[0019] The upper end of the press plunger protrudes into the press cavity and is used to place the hot plate of the hot press;

[0020] The oil receiving pan is used for containing hydraulic oil.

[0021] Preferably, the oil receiving pan is composed of an annular bottom plate and a cylindrical side wall plate;

[0022] The lower end of the cylindrical side wall plate is sealed and fixedly connected to the outer edge of the annular bottom plate.

[0023] Preferably, the hot press further comprises a tightening sealing ring;

[0024] The inner wall of the clamping flange is formed with an annular sealing ring groove;

[0025] The outer ring of the compression seal ring is fixed in the annular seal ring groove, and the inner ring is sealed and fitted to the press plunger.

[0026] Preferably, the oil scraping sealing ring is made of Teflon.

[0027] Preferably, the clamping flange is fixed to the press cylinder sleeve by bolts.

[0028] Preferably, the oil receiving pan is fixed to the clamping flange by bolts.

[0029] Preferably, the hot press is a vacuum hot press.

[0030] Preferably, the hot press is a double-cylinder or four-cylinder machine.

[0031] Preferably, the plate to be pressed is a plate used for pressing a copper-clad circuit substrate.

[0032] The hot press of the present invention adds an oil receiving pan to the outer ring of the press plunger of a conventional hot press, adds an oil scraper seal ring to the outer ring of the press plunger and below the oil receiving pan, and hydraulic oil is added to the oil receiving pan. Each time the press plunger rises, the hydraulic oil in the oil receiving pan will apply a layer of oil film to the surface of the upward-probing press plunger, keeping the surface of the upward-probing press plunger moist. Volatile substances generated during the hot pressing process are not easily adhered to the surface of the upward-probing press plunger, which can prevent abnormal equipment or product quality caused by long-term accumulation of volatile substances. Each time the press plunger descends, the oil scraper seal ring will scrape off hydraulic oil and other attachments on the surface of the press plunger. When the press plunger descends, the oil film on its surface will return to the oil receiving pan and will not contaminate the press cavity. The hot press has a plunger surface that is not prone to glue formation, and does not require frequent manual cleaning, thereby ensuring that the plunger surface is clean and lubricated. The plunger can be raised and lowered steadily and smoothly, preventing attachments on the plunger surface from rubbing against the clamping flange for a long time, thereby extending the service life of the clamping flange, preventing small foreign matter from being brought into the oil pressure system, preventing abnormal pressure in the hot press hydraulic control system due to failure to filter out small foreign matter, and preventing the service life of the hot press hydraulic oil from being reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 It is a schematic cross-sectional view of an embodiment of a hot press of the present invention.

[0035] Description of reference numerals:

[0036] 1. Press body; 2. Press cavity; 3. Press cylinder liner; 4. Press plunger; 5. Clamping flange; 6. Oil pan; 7. Oil scraper seal; 8. Hot plate; 9. Clamping seal. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The terms "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprises" and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "front", "back" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0040] Example 1

[0041] like Figure 1 As shown, the hot press includes a press body 1, a press cavity 2, a press cylinder liner 3, a press plunger 4, a clamping flange 5, an oil receiving pan 6 and an oil scraper seal 7;

[0042] The press plunger 4 is sleeved in the press cylinder liner 3 and can move up and down relative to the press cylinder liner 3;

[0043] The press cylinder sleeve 3 is fixed on the press body 1;

[0044] The press cavity 2 is fixedly connected to the press cylinder liner 3 and is located above the press cylinder liner 3;

[0045] The clamping flange 5, the oil receiving pan 6 and the oil scraper seal 7 are installed and fixed in the press cavity 2;

[0046] The clamping flange 5 is coaxially sleeved outside the press plunger 4 and fixed on the press cylinder liner 3. After the lower side of the axial side of the clamping flange 5 is tightened, the contact surface between the press cylinder liner 3 and the press plunger 4 is sealed;

[0047] The bottom plate of the oil receiving pan 6 is annular;

[0048] The inner diameter of the annular bottom plate of the oil receiving pan 6 is larger than the inner diameter of the oil scraper seal 7 and the outer diameter of the press plunger 4;

[0049] The outer diameter of the oil scraper seal 7 is larger than the inner diameter of the upper side of the clamping flange 5;

[0050] The outer diameter of the oil scraper seal 7 is smaller than the outer diameter of the upper side of the clamping flange 5 and the outer diameter of the annular bottom plate of the oil receiving pan 6;

[0051] The bottom plate of the oil receiving pan 6 is coaxially sleeved outside the press plunger 4 and fixed to the clamping flange 5;

[0052] The inner wall of the oil scraper seal ring 7 is in contact with the outer wall of the press plunger 4 and is coaxially sleeved outside the press plunger 4;

[0053] The lower side of the oil scraper seal ring 7 is sealed against the upper side of the clamping flange 5;

[0054] The upper side of the oil scraper seal ring 7 is sealed against the lower side of the annular bottom plate of the oil receiving pan 6;

[0055] The oil scraping seal ring 7, the press plunger 4 and the adjoining portion of the bottom plate of the oil receiving pan 6 form an annular oil scraping groove around the press plunger 4;

[0056] The upper end of the press plunger 4 protrudes into the press cavity 2 and is used to place the hot plate 8 of the hot press;

[0057] The oil receiving pan 6 is used to contain hydraulic oil.

[0058] In the hot press of the first embodiment, an oil receiving pan 6 is added to the outer ring of the press plunger 4 of a common hot press, and an oil scraper sealing ring 7 is added to the outer ring of the press plunger 4 of the hot press and below the oil receiving pan 6. Hydraulic oil is added to the oil receiving pan 6. During each ascent of the press plunger 4, the hydraulic oil in the oil receiving pan 6 will apply a layer of oil film to the surface of the press plunger 4 that is probing upward, so that the surface of the press plunger 4 that is probing upward remains moist. Volatile substances generated during the hot pressing process are not easily adhered to the surface of the press plunger 4 that is probing upward, thus avoiding abnormal equipment or product quality caused by long-term accumulation of volatile substances. During each descent of the press plunger 4, the oil scraper sealing ring 7 will scrape off hydraulic oil and other attachments on the surface of the press plunger 4. When the press plunger 4 descends, the oil film on its surface will return to the oil receiving pan 6 and will not contaminate the press cavity 2.

[0059] In the hot press of Example 1, the surface of the press plunger 4 is not easy to form glue, and there is no need for frequent manual cleaning to ensure that the surface of the press plunger 4 is clean and lubricated. The press plunger 4 can be raised and lowered steadily and smoothly, which can prevent the attachments on the surface of the press plunger 4 from rubbing against the clamping flange 5 for a long time, and can extend the service life of the clamping flange 5, and prevent small foreign matter from being brought into the oil pressure system, and avoid abnormal pressure of the hot press hydraulic control system due to the inability to filter small foreign matter, thereby avoiding reducing the service life of the hot press hydraulic oil.

[0060] Example 2

[0061] Based on the hot press of embodiment 1, the oil receiving pan 6 is composed of a circular bottom plate and a cylindrical side wall plate;

[0062] The lower end of the cylindrical side wall plate is sealed and fixedly connected to the outer edge of the annular bottom plate.

[0063] Preferably, the hot press further comprises a tightening sealing ring 9;

[0064] The inner wall of the clamping flange 5 is formed with an annular sealing ring groove;

[0065] The outer ring of the tightening seal ring 9 is fixed in the annular seal ring groove, and the inner ring is sealed against the press plunger 4 .

[0066] Preferably, the oil scraping seal ring 7 is made of Teflon.

[0067] Preferably, the clamping flange 5 is fixed to the press cylinder liner 3 by bolts.

[0068] Preferably, the oil receiving pan 6 is fixed to the clamping flange 5 by bolts.

[0069] Preferably, the hot press is a vacuum hot press.

[0070] Preferably, the hot press is a double-cylinder or quad-cylinder hot press. Double-cylinder or quad-cylinder hot presses will not cause the plungers 4 of each cylinder to rise and fall asynchronously due to glue on the plunger surface, causing the hot plate to shake or make abnormal noises, affecting the pressing quality of the sheets to be pressed and the stability of the equipment.

[0071] Preferably, the plate to be pressed is a plate used for pressing a copper-clad circuit substrate.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hot press, characterized in that: It comprises a press body (1), a press cavity (2), a press cylinder sleeve (3), a press plunger (4), a clamping flange (5), an oil receiving pan (6) and an oil scraping seal ring (7); The press plunger (4) is sleeved in the press cylinder sleeve (3) and can move up and down relative to the press cylinder sleeve (3); The press cylinder sleeve (3) is fixed on the press body (1); The press cavity (2) is fixedly connected to the press cylinder sleeve (3) and is located above the press cylinder sleeve (3); The clamping flange (5), the oil receiving pan (6) and the oil scraping seal ring (7) are installed and fixed in the press cavity (2); The clamping flange (5) is coaxially sleeved outside the press plunger (4) and fixed on the press cylinder sleeve (3). After the lower side of the axial center side of the clamping flange (5) is clamped, the contact surface between the press cylinder sleeve (3) and the press plunger (4) is sealed; The bottom plate of the oil receiving pan (6) is annular; The inner diameter of the annular bottom plate of the oil receiving pan (6) is larger than the inner diameter of the oil scraper seal ring (7) and the outer diameter of the press plunger (4); The outer diameter of the oil scraping seal ring (7) is larger than the inner diameter of the upper side of the clamping flange (5); The outer diameter of the oil scraper seal ring (7) is smaller than the outer diameter of the upper side of the clamping flange (5) and the outer diameter of the annular bottom plate of the oil receiving pan (6); The bottom plate of the oil receiving pan (6) is coaxially sleeved outside the press plunger (4) and fixed to the clamping flange (5); The inner wall of the oil scraping seal ring (7) is in contact with the outer wall of the press plunger (4) and is coaxially sleeved outside the press plunger (4); The lower side of the oil scraping seal ring (7) is in sealing contact with the upper side of the clamping flange (5); The upper side of the oil scraping seal ring (7) is sealed against the lower side of the annular bottom plate of the oil receiving pan (6); The oil scraping seal ring (7), the press plunger (4) and the adjacent portion of the bottom plate of the oil receiving pan (6) form an annular oil scraping groove around the press plunger (4); The upper end of the press plunger (4) protrudes into the press cavity (2) and is used to place the hot plate (8) of the hot press; The oil receiving pan (6) is used for containing hydraulic oil.

2. The hot press according to claim 1, characterized in that The oil receiving pan (6) is composed of a circular ring bottom plate and a cylindrical side wall plate; The lower end of the cylindrical side wall plate is sealed and fixedly connected to the outer edge of the annular bottom plate.

3. The hot press according to claim 1, characterized in that The hot press also includes a tightening sealing ring (9); The inner wall of the clamping flange (5) is formed with a circular sealing ring groove; The outer ring of the tightening seal ring (9) is fixed in the annular seal ring groove, and the inner ring is sealed and fitted to the press plunger (4).

4. The hot press according to claim 1, characterized in that The oil scraping sealing ring (7) is made of Teflon.

5. The hot press according to claim 1, characterized in that The clamping flange (5) is fixed to the press cylinder sleeve (3) by means of bolts.

6. The hot press according to claim 1, characterized in that The oil receiving pan (6) is fixed to the clamping flange (5) by means of bolts.

7. The hot press according to claim 1, characterized in that The hot press is a vacuum hot press.

8. The hot press according to claim 1, characterized in that The hot press is a double-cylinder or four-cylinder machine.

9. The hot press according to claim 1, characterized in that The sheet material to be pressed is a sheet material used for pressing a copper-clad circuit substrate.

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