A hot press for steel plate production

Abstract

The present invention belongs to the technical field of steel plate production, and discloses a hot press for steel plate production, including a hot press body; a hydraulic cylinder, which is arranged at the top of the hot press body, and the top of the hot press body is provided with an oil delivery mechanism located on one side of the hydraulic cylinder; a second oil pipe, which is fixedly connected to the bottom between the hydraulic cylinder and the oil delivery mechanism; and a filter assembly including a disc box, which is fixedly installed on one side of the surface of the second oil pipe. The above technical solution is provided with a shielding mechanism and a driving assembly. When the trigger assembly as a whole is subjected to the pressure generated by the accumulated oil blocked by the filter screen in the second oil pipe, a signal can be sent to drive the shielding mechanism to operate. At this time, the shielding mechanism will drive the driving assembly to drive the rotating disk and the filter screen to rotate as a whole. At this time, the filter screen at the top can be switched to the inside of the second oil pipe for continued filtering, thereby realizing rapid replacement of the filter screen and ensuring that subsequent hot pressing work can proceed smoothly.

Description

Technical Field

[0001] The invention belongs to the technical field of steel plate production, in particular to a hot press for steel plate production. Background Art

[0002] Steel plate hot press is a kind of equipment specially used for hot pressing steel plates. Its working principle is mainly based on the principle of plastic deformation of metal. Under high temperature and high pressure conditions, the atomic distance of the metal plate decreases and the crystal structure changes, thereby producing plastic deformation, so that the two metal plates are tightly combined together under the action of high temperature and high pressure.

[0003] The existing steel plate hot press uses a hydraulic cylinder set on the top to push the upper pressure plate to press down the two steel plates on the top of the lower pressure plate, heating and pressing them together. Since the output end at the bottom of the hydraulic cylinder is exposed to the outside world and some metal debris and dust particles will enter the cylinder body, a filter is needed to block the impurities to avoid clogging the connecting pipe between the bottom of the hydraulic cylinder and the oil tank. However, since the filter will also cause blockage due to the long-term absorption of impurities and dust, it needs to be disassembled for cleaning, but it is often impossible to clean it in the first time, which will cause blockage during the working process and affect the processing. Therefore, it needs to be improved. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a hot press for steel plate production, which has the advantage of being easy to replace a clogged filter in time.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a hot press for steel plate production, comprising a hot press body; a hydraulic cylinder, arranged on the top of the hot press body, and an oil delivery mechanism located on one side of the hydraulic cylinder is provided on the top of the hot press body; a second oil pipe, fixedly connected to the bottom between the hydraulic cylinder and the oil delivery mechanism; a filter assembly comprising a disc box, the disc box being fixedly mounted on one side of the surface of the second oil pipe, a rotating disc movably sleeved inside the disc box, a filter screen plate being provided inside the rotating disc, a ball bearing being provided at the outer end of the rotating disc, the ball bearing being in rolling connection with the inner wall of the disc box, a shielding mechanism located on the other side of the second oil pipe being provided on the top of the hot press body, and a drive assembly being provided on one side of the disc box;

[0006] The shielding mechanism includes an electric telescopic rod, a top frame, a spring cylinder and a shielding plate;

[0007] The electric telescopic rod is fixedly mounted on the top of the hot press body and is located on the other side of the surface of the second oil pipe. The top frame is fixedly mounted on the output end of the electric telescopic rod. The spring cylinder is fixedly mounted on one side of the top frame. The shielding plate is fixedly mounted on one side of the spring cylinder, and one end extends into the interior of the disc box. The shielding plate is provided with a notch having the same size as the inner side of the second oil pipe.

[0008] The driving assembly includes a driving cylinder, a first ventilation pipe, a first pushing cylinder, a pushing block and a protruding block;

[0009] The driving cylinder is arranged on the top of one side of the disc box, the first pushing cylinder is fixedly installed on one side of the disc box and is located below the back of the driving cylinder, one side of the inner cavity of the driving cylinder is fixedly connected to the inner cavity of one end of the first pushing cylinder through the first ventilation pipe, the pushing block is fixedly installed on the output end of the first pushing cylinder, and the protrusion is fixedly installed on the surface of one end of the rotating disk;

[0010] An oil passing assembly is provided inside the rotating disk and is located between the filter screen plates. The oil passing assembly includes an oil passing groove, a first stopper, a second stopper, and a second spring.

[0011] The filter plates are connected through an oil groove, the first stopper and the second stopper are movably mounted inside the two ends of the oil groove, and one side of the first stopper is elastically connected to the inner wall of the oil groove through the second stopper;

[0012] A pushing assembly is provided on one end of the surface of the second oil pipe, and the pushing assembly includes a second pushing cylinder, a pushing frame and a second ventilation pipe;

[0013] The second pushing cylinder is fixedly mounted on one end of the surface of the second oil pipe and is located on one side of the disc box. The pushing frame is fixedly mounted on the output end of the second pushing cylinder, and its two ends are respectively opposite to the other side of the first block and the second block. The second pushing cylinder is fixedly connected to the other end of the inner cavity of the driving cylinder through the second ventilation pipe.

[0014] Preferably, an upper hot pressing plate is provided at the bottom of the hydraulic cylinder, and a lower hot pressing plate is provided in the inner cavity of the hot press body below the upper hot pressing plate. The top of one side of the hydraulic cylinder is fixedly connected to the top of the oil delivery mechanism through a first oil pipe.

[0015] Preferably, the spring barrel has telescopic capability.

[0016] Preferably, the top end of the other side of the disc box is fixedly connected to the impurity extraction pipe on one side of the filter screen plate.

[0017] Preferably, a trigger assembly is provided inside the second oil pipe and is located below one side of the filter plate. The trigger assembly includes a pressure sensor, a pressure transmission top block and a first spring.

[0018] The pressure sensor is fixedly installed inside the second oil pipe and is located below one side of the filter screen. The pressure transmission top block is movably installed on the outer end of the filter screen and is located on one side of the pressure sensor. The pressure transmission top block is elastically connected to the inside of the filter screen through a first spring.

[0019] Preferably, the dimensions of both ends of one side of the pushing frame are smaller than the dimensions of the first stopper and the second stopper.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The above technical solution sets up a shielding mechanism and a driving component. When the trigger component as a whole is subjected to the pressure generated by the accumulated oil in the filter plate in the second oil pipe, a signal can be sent to drive the shielding mechanism to operate. At this time, the shielding mechanism will drive the driving component to drive the rotating disk and the filter plate as a whole to rotate. At this time, the filter plate at the top can be switched to the inside of the second oil pipe to continue filtering, thereby realizing rapid replacement of the filter plate and ensuring that subsequent hot pressing work can be carried out smoothly.

[0022] The present invention is provided with an electric telescopic rod and a shielding plate. When the shielding mechanism is operated as a whole, that is, the electric telescopic rod is driven to operate by a signal sent by a trigger component, the top frame can be pushed to drive the spring cylinder and the shielding plate to move to one side as a whole, until the notch on the inner side of the shielding plate is misaligned with the inner cavity of the second oil pipe, so that the two sides of the filter screen can be blocked and sealed to prevent the hydraulic oil from continuing to pass through and affecting the subsequent rotation. When the shielding plate is moved and fixed, the electric telescopic rod will continue to push the shielding plate, so that the spring cylinder is squeezed, and the driving assembly is smoothly pushed through the top frame.

[0023] The present invention provides an oil passing component and a pushing component. When the driving component is driven, the pushing component is driven so that one end of the pushing component is driven to one side until the filter screen is successfully switched. At this time, one end of the pushing component will be inserted into the two ends of the oil passing component, fixing the filter screen as a whole while pushing the oil passing component to release the connection effect between the two filter screens. Finally, the hydraulic oil inside the filter screen containing impurities can be opened through the oil passing component to enter the switching filter screen and the second oil passing pipe, thereby realizing rapid reflux of the hydraulic oil and avoiding loss and waste of hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a partial cross-sectional structural schematic diagram of the hydraulic cylinder of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the disc box of the present invention;

[0027] Figure 4 It is a schematic diagram of the partial structure of the shielding mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the partial structure of the filter assembly of the present invention;

[0029] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at A in the middle;

[0030] Figure 7 for Figure 5 Schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 8 It is a structural schematic diagram of the drive assembly of the present invention;

[0032] Figure 9 for Figure 8 Schematic diagram of the local enlarged structure at C in the middle;

[0033] Figure 10 for Figure 8 Schematic diagram of the local enlarged structure at point D in the middle.

[0034] Figure: 1, hot press body; 2, hydraulic cylinder; 3, upper hot press plate; 4, lower hot press plate; 5, oil delivery mechanism; 6, first oil pipe; 7, second oil pipe; 8, filter assembly; 801, disc box; 802, rotating disc; 803, filter screen; 804, ball bearing; 9, shielding mechanism; 901, electric telescopic rod; 902, top frame; 903, spring cylinder; 904, shielding plate; 10, extraction pipe; 11, trigger assembly; 1101, pressure sensor; 11 02. Pressure-transmitting top block; 1103. First spring; 12. Oil-passing assembly; 1201. Oil-passing groove; 1202. First stopper; 1203. Second stopper; 1204. Second spring; 13. Driving assembly; 1301. Driving cylinder; 1302. First ventilation pipe; 1303. First pushing cylinder; 1304. Pushing block; 1305. Bump; 14. Pushing assembly; 1401. Second pushing cylinder; 1402. Pushing frame; 1403. Second ventilation pipe. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0036] like Figures 1 to 10As shown, the present invention provides a hot press for steel plate production, comprising a hot press body 1; a hydraulic cylinder 2, which is arranged on the top of the hot press body 1, and an oil delivery mechanism 5 located on one side of the hydraulic cylinder 2 is provided on the top of the hot press body 1; a second oil pipe 7, which is fixedly connected to the bottom between the hydraulic cylinder 2 and the oil delivery mechanism 5; a filter assembly 8 comprises a disc box 801, which is fixedly installed on one side of the surface of the second oil pipe 7, a rotating disc 802 is movably sleeved inside the disc box 801, a filter screen 803 is provided inside the rotating disc 802, a ball 804 is provided on the outer end of the rotating disc 802, and the ball 804 is rollingly connected to the inner wall of the disc box 801, a shielding mechanism 9 located on the other side of the second oil pipe 7 is provided on the top of the hot press body 1, and a driving assembly 13 is provided on one side of the disc box 801;

[0037] When the shielding mechanism 9 drives the driving assembly 13 to drive the rotating disk 802 to rotate, the filter plate 803 blocked by impurities in the second oil pipe 7 can be smoothly rotated to the top filter plate 803 to switch, so that the subsequent hot pressing operation can proceed smoothly.

[0038] The shielding mechanism 9 includes an electric telescopic rod 901, a top frame 902, a spring cylinder 903 and a shielding plate 904;

[0039] An electric telescopic rod 901 is fixedly mounted on the top of the hot press body 1 and is located on the other side of the surface of the second oil pipe 7. A top frame 902 is fixedly mounted on the output end of the electric telescopic rod 901. A spring cylinder 903 is fixedly mounted on one side of the top frame 902. A shielding plate 904 is fixedly mounted on one side of the spring cylinder 903, with one end extending into the interior of the disc box 801. The shielding plate 904 has a slot with the same size as the inner side of the second oil pipe 7.

[0040] With the above solution, by providing the shielding plate 904, when the shielding plate 904 is moved back and forth as a whole, the misalignment of the inner notch and the inner cavity of the second oil pipe 7 can be aligned, thereby achieving the purpose of shielding and opening the filter plate 803 twice;

[0041] The driving assembly 13 includes a driving cylinder 1301, a first ventilation pipe 1302, a first pushing cylinder 1303, a pushing block 1304 and a protrusion 1305;

[0042] The driving cylinder 1301 is mounted on the top of one side of the disc box 801. The first pushing cylinder 1303 is fixedly mounted on one side of the disc box 801 and is located below the back of the driving cylinder 1301. The inner cavity of the driving cylinder 1301 is fixedly connected to the inner cavity of one end of the first pushing cylinder 1303 via the first ventilation pipe 1302. The pushing block 1304 is fixedly mounted on the output end of the first pushing cylinder 1303. The protrusion 1305 is fixedly mounted on the surface of one end of the rotating disk 802.

[0043] With the above solution, by providing the push block 1304, when the output end of the driving cylinder 1301 is pushed and retracted into the driving cylinder 1301 by the top frame 902, negative pressure is generated on one side of the inner cavity of the driving cylinder 1301, and the gas in the inner cavity of the first pushing cylinder 1303 is extracted through the first ventilation pipe 1302, so that the push block 1304 smoothly pushes the protrusion 1305, and the rotating disk 802 as a whole rotates under the action of the rolling of the balls 804 and the disc box 801;

[0044] An oil passing assembly 12 is provided inside the rotating disk 802 and is located between the filter screen plates 803. The oil passing assembly 12 includes an oil passing groove 1201, a first stopper 1202, a second stopper 1203 and a second spring 1204.

[0045] The filter plates 803 are connected to each other through the oil groove 1201. The first stopper 1202 and the second stopper 1203 are movably installed inside the two ends of the oil groove 1201. One side of the first stopper 1202 is elastically connected to the inner wall of the oil groove 1201 through the second stopper 1203.

[0046] With the above solution, the second spring 1204 is provided, and the elastic force of the second spring 1204 can push the first stopper 1202 and the second stopper 1203 to move to the other side, thereby pushing both ends of the first stopper 1202 to block and seal.

[0047] A pushing assembly 14 is provided at one end of the surface of the second oil pipe 7. The pushing assembly 14 includes a second pushing cylinder 1401, a pushing frame 1402 and a second ventilation pipe 1403.

[0048] The second push cylinder 1401 is fixedly mounted on one end of the surface of the second oil pipe 7 and is located on one side of the disc box 801. The push frame 1402 is fixedly mounted on the output end of the second push cylinder 1401, with both ends facing the other side of the first stopper 1202 and the second stopper 1203 respectively. The second push cylinder 1401 is fixedly connected to the other end of the inner cavity of the driving cylinder 1301 through the second ventilation pipe 1403.

[0049] The above solution is adopted: by providing a second ventilation pipe 1403, when the output end of the driving cylinder 1301 moves to one side, the gas in the inner cavity at the other end of the driving cylinder 1301 can smoothly enter the interior of the second pushing cylinder 1401 through the second ventilation pipe 1403, thereby pushing the pushing frame 1402 to drive the first stop block 1202 and the second stop block 1203 to move to one side as a whole.

[0050] like Figure 1As shown, an upper hot pressing plate 3 is provided at the bottom of the hydraulic cylinder 2, and a lower hot pressing plate 4 located below the upper hot pressing plate 3 is provided in the inner cavity of the hot press body 1. The top of one side of the hydraulic cylinder 2 is fixedly connected to the top of the oil delivery mechanism 5 through the first oil pipe 6.

[0051] The above scheme is adopted: by setting up an upper hot pressing plate 3 and a lower hot pressing plate 4, the operator can first place the two steel plates that need to be hot pressed on the top of the lower hot pressing plate 4, and then start the oil delivery mechanism 5 to deliver oil through the first oil pipe 6 into the top inner cavity of the hydraulic cylinder 2, and push the output end of the hydraulic cylinder 2 to drive the upper hot pressing plate 3 as a whole downward, and the hydraulic oil at the bottom of the inner cavity of the hydraulic cylinder 2 will be filtered by the filter plate 803 through the second oil pipe 7 and guided back to the oil delivery mechanism 5, and finally press the top of the steel plate through the upper hot pressing plate 3, and start the upper hot pressing plate 3 and the lower hot pressing plate 4 to enter heating, thereby achieving the purpose of hot pressing.

[0052] like Figures 2 to 4 As shown, the spring barrel 903 has a telescopic capability.

[0053] The above solution is adopted: by providing a spring cylinder 903, when the electric telescopic rod 901 is operated, the top frame 902, the spring cylinder 903 and the baffle 904 are pushed to one side as a whole, so that the baffle 904 is moved and fixed. When the electric telescopic rod 901 is operated, the spring cylinder 903 can be compressed, so that the top frame 902 moves to one side, thereby smoothly driving the drive assembly 13 as a whole.

[0054] like Figure 2 and Figure 3 As shown, the top end of the other side of the disc box 801 is fixedly connected to the impurity extraction pipe 10 on one side of the filter plate 803.

[0055] The above solution is adopted: by providing a suction pipe 10, the operator can connect a dust suction device to the suction pipe 10, and start the dust suction device to suck away impurities on the inner end of the filter plate 803 through the suction pipe 10 to achieve the purpose of cleaning.

[0056] like Figure 7 As shown, the interior of the second oil pipe 7 is provided with a trigger assembly 11 located below one side of the filter plate 803. The trigger assembly 11 includes a pressure sensor 1101, a pressure transmission top block 1102 and a first spring 1103.

[0057] The pressure sensor 1101 is fixedly installed inside the second oil pipe 7 and is located below one side of the filter plate 803. The pressure transmission top block 1102 is movably installed on the outer end of the filter plate 803 and is located on one side of the pressure sensor 1101. The pressure transmission top block 1102 is elastically connected to the inside of the filter plate 803 through the first spring 1103.

[0058] The above solution is adopted: by providing a first spring 1103, at this time, since the first spring 1103 is in a stretched state, the pressure transmitting top block 1102 can be pulled to move obliquely upward as a whole, thereby creating a gap with one side of the pressure sensor 1101, which can avoid contact with the pressure sensor 1101 to generate pressure, affecting the subsequent driving of the electric telescopic rod 901.

[0059] like Figure 9 and Figure 10 As shown, the dimensions of both ends of one side of the pushing frame 1402 are smaller than the dimensions of the first stopper 1202 and the second stopper 1203 .

[0060] The above-mentioned solution is adopted: by designing that the dimensions of the two ends of the pushing frame 1402 are smaller than the first stop block 1202 and the second stop block 1203, when the pushing frame 1402 pushes the first stop block 1202 and the second stop block 1203 to open to one side, the hydraulic oil in the filter plate 803 with impurities can flow back smoothly to the switched filter plate 803 and the inside of the second oil pipe 7 through the gap between the first stop block 1202 and the two ends of the pushing frame 1402.

[0061] The working principle and use process of the present invention:

[0062] First, when the filter screen 803 in the second oil pipe 7 is clogged with impurities, the hydraulic oil on one side of the filter screen 803 will accumulate and generate pressure, pushing the pressure transmission top block 1102 to move outward and transmitting the pressure to the pressure sensor 1101, so that the pressure sensor 1101 sends a signal to the control end, thereby driving the electric telescopic rod 901 to drive the top frame 902, the spring cylinder 903 and the baffle 904 to move to one side as a whole, until the inner groove of the spring cylinder 903 is misaligned with the inner cavity of the second oil pipe 7, and both sides of the filter screen 803 can be blocked and sealed.

[0063] Afterwards, the electric telescopic rod 901 can be pushed further to compress the spring tube 903. At this time, the top frame 902 will continue to move and push the output end of the driving cylinder 1301 to retract, so that negative pressure is generated on one side of the inner cavity and the gas on one side of the inner cavity of the first pushing cylinder 1303 is extracted through the first ventilation pipe 1302, so that the output end of the first pushing cylinder 1303 drives the pushing block 1304 to push the protrusion 1305 and the rotating disk 802, so that the rotating disk 802 rotates under the action of the sliding of the ball 804 and the inside of the disc box 801.

[0064] At the same time, when the output end of the driving cylinder 1301 is retracted, the gas at the other end of the inner cavity will be pushed into the interior of the second pushing cylinder 1401 through the second ventilation pipe 1403, thereby pushing the pushing frame 1402 as a whole to one side until the filter plate 803 is fully rotated and switched, and can be smoothly inserted into the rear end of the first stopper 1202 and the second stopper 1203. While fixing the filter plate 803 as a whole, the first stopper 1202 and the second stopper 1203 are continued to be pushed to one side to open, so that the oil in the filter plate 803 containing impurities can smoothly enter the switched filter plate 803 and the inner cavity of the second oil pipe 7 to achieve smooth reflux. At this time, the thrust generated by the reflux of the hydraulic oil in the inner cavity of the filter plate 803 will push the pressure transmission top block 1102 to transmit it to the pressure sensor 1101, so that the pressure sensor 1101 obtains data again and sends a signal to the control end to control the overall reset of the shielding mechanism 9, so that the two sides of the filter plate 803 can be opened and the hydraulic oil can continue to pass through for filtering.

[0065] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hot press for steel plate production, characterized in that: It includes a hot press body (1); A hydraulic cylinder (2) is provided on the top of the hot press body (1), and an oil delivery mechanism (5) is provided on the top of the hot press body (1) and is located on one side of the hydraulic cylinder (2); A second oil pipe (7) is fixedly connected to the bottom between the hydraulic cylinder (2) and the oil delivery mechanism (5); The filter assembly (8) includes a disc box (801), which is fixedly mounted on one side of the surface of the second oil pipe (7), a rotating disc (802) being movably sleeved inside the disc box (801), a filter screen (803) being provided inside the rotating disc (802), a ball bearing (804) being provided at the outer end of the rotating disc (802), and the ball bearing (804) being rollingly connected to the inner wall of the disc box (801), a shielding mechanism (9) being provided on the other side of the second oil pipe (7) at the top of the hot press body (1), and a driving assembly (13) being provided on one side of the disc box (801); The shielding mechanism (9) comprises an electric telescopic rod (901), a top frame (902), a spring cylinder (903) and a shielding plate (904); The electric telescopic rod (901) is fixedly mounted on the top of the hot press body (1) and is located on the other side of the surface of the second oil pipe (7); the top frame (902) is fixedly mounted on the output end of the electric telescopic rod (901); the spring cylinder (903) is fixedly mounted on one side of the top frame (902); the shielding plate (904) is fixedly mounted on one side of the spring cylinder (903) and one end of the shielding plate extends into the inside of the disc box (801); the inside of the shielding plate (904) is provided with a notch of the same size as the inside of the second oil pipe (7); The driving assembly (13) comprises a driving cylinder (1301), a first ventilation pipe (1302), a first pushing cylinder (1303), a pushing block (1304) and a protrusion (1305); The driving cylinder (1301) is arranged at the top of one side of the disc box (801), the first pushing cylinder (1303) is fixedly installed on one side of the disc box (801) and is located below the back of the driving cylinder (1301), one side of the inner cavity of the driving cylinder (1301) is fixedly connected to the inner cavity of one end of the first pushing cylinder (1303) through the first ventilation pipe (1302), the pushing block (1304) is fixedly installed at the output end of the first pushing cylinder (1303), and the protrusion (1305) is fixedly installed on the surface of one end of the rotating disk (802); An oil-passing assembly (12) located between the filter screens (803) is provided inside the rotating disk (802), and the oil-passing assembly (12) comprises an oil-passing groove (1201), a first stopper (1202), a second stopper (1203), and a second spring (1204); The filter screen plates (803) are connected to each other via the oil groove (1201); the first stopper (1202) and the second stopper (1203) are movably mounted inside the two ends of the oil groove (1201), respectively; one side of the first stopper (1202) is elastically connected to the inner wall of the oil groove (1201) via the second stopper (1203); A pushing assembly (14) is provided at one end of the surface of the second oil pipe (7), and the pushing assembly (14) comprises a second pushing cylinder (1401), a pushing frame (1402) and a second ventilation pipe (1403); The second pushing cylinder (1401) is fixedly mounted on one end of the surface of the second oil pipe (7) and is located on one side of the disc box (801). The pushing frame (1402) is fixedly mounted on the output end of the second pushing cylinder (1401), and its two ends are respectively opposite to the other side of the first block (1202) and the second block (1203). The second pushing cylinder (1401) is fixedly connected to the other end of the inner cavity of the driving cylinder (1301) through the second ventilation pipe (1403).

2. The hot press for steel plate production according to claim 1, characterized in that: An upper hot pressing plate (3) is provided at the bottom of the hydraulic cylinder (2), and a lower hot pressing plate (4) located below the upper hot pressing plate (3) is provided in the inner cavity of the hot pressing machine body (1). The top end of one side of the hydraulic cylinder (2) is fixedly connected to the top of the oil delivery mechanism (5) through a first oil pipe (6).

3. The hot press for steel plate production according to claim 1, characterized in that: The spring cylinder (903) has a telescopic capability.

4. The hot press for steel plate production according to claim 1, characterized in that: The top end of the other side of the disc box (801) is fixedly connected to the impurity extraction pipe (10) on one side of the filter screen plate (803).

5. The hot press for steel plate production according to claim 1, characterized in that: A trigger assembly (11) is provided inside the second oil pipe (7) and is located below one side of the filter screen plate (803). The trigger assembly (11) includes a pressure sensor (1101), a pressure transmission top block (1102), and a first spring (1103). The pressure sensor (1101) is fixedly installed inside the second oil pipe (7) and is located below one side of the filter screen (803). The pressure transmission top block (1102) is movably installed on the outer end of the filter screen (803) and is located on one side of the pressure sensor (1101). The pressure transmission top block (1102) is elastically connected to the inside of the filter screen (803) via a first spring (1103).

6. The hot press for steel plate production according to claim 1, characterized in that: The dimensions of both ends of one side of the pushing frame (1402) are smaller than the dimensions of the first stopper (1202) and the second stopper (1203).

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