Press machine for producing slag stopping rod

Abstract

The invention relates to the technical field of press machines, in particular to a press machine for slag stopping rod production, which comprises a rack body and a pressure-bearing platen fixedly mounted on the rack body, a main mold is fixedly mounted on the pressure-bearing platen, a mold pressing column capable of ascending and descending is arranged above the main mold, powder is filled in the main mold, and the mold pressing column is arranged above the main mold. The die pressing column is pressed downwards to be matched with the main die to achieve blank production of the slag stopping rod. According to the press machine, the powder is input from the bottom of the main mold to the mold cavity cylindrical part of the main mold, the powder is input from the bottom of the mold cavity cylindrical part until the mold cavity of the main mold is filled with the powder, the risk that the mold cavity cylindrical part is lack of materials can be reduced, the bottom can be automatically closed during pressing, and the production efficiency is improved. And during demolding, the inner plug shaft is driven to move upwards for demolding in cooperation with the demolding ejection shaft, and function switching in multiple states is achieved.

Description

Technical Field

[0001] This invention relates to the field of press technology, specifically to a press for producing slag-blocking rods. Background Technology

[0002] Slag-blocking rods are refractory material products used to prevent slag from flowing into the ladle during steel tapping in a converter. The slag-blocking rod is an integrated structure of a truncated cone and a cylindrical guide rod. During production, it is integrally molded. It is made of refractory aggregates such as high-alumina bauxite, magnesia-carbon material, and corundum as the main body, and phenolic resin, phosphate and other high-temperature resistant binders are added in proportion to make powder. The powder is filled into the mold, and then high pressure is used to form a blank. Finally, it is baked at high temperature to cure. In the production process of filling powder into the mold, since the mold cavity is divided into a truncated conical part and a cylindrical part, and the cylindrical part is a slender cylindrical cavity, workers have found that when actually filling the powder, the powder is difficult to fall into the cylindrical part of the mold cavity, and the cylindrical part is prone to material shortage. This will result in the subsequent pressed blanks being defective products, affecting the yield rate. Since the mold is usually fixed on the base, it is difficult to knock and vibrate it. In the existing technology, workers can only fill the cylindrical part with powder by stirring it with a metal rod while filling the powder, which is not only slow but also inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a press for producing slag-blocking rods, so as to solve the problem mentioned in the background art that the cylindrical part of the mold cavity of the slag-blocking rod mold is prone to material shortage.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a press for producing slag-blocking rods, comprising a frame and a pressure plate fixedly mounted on the frame. A main mold is fixedly mounted on the pressure plate, and a mold pressure column capable of lifting and moving is provided above the main mold. Powder is filled inside the main mold, and the mold pressure column presses down to cooperate with the main mold to produce the billet of the slag-blocking rod. A plate groove is formed in the pressure plate, and a sliding controllable switching slider is provided in the plate groove. An arc-shaped flow is provided in the switching slider. The flow channel and inner plug shaft can be switched by sliding the slider to connect the curved flow channel or the inner plug shaft to the bottom of the cylindrical part of the main mold cavity. The bottom of the main mold is also provided with a demolding top shaft that is coaxial with the cylindrical part of the mold cavity. When the inner plug shaft is connected to the bottom of the cylindrical part of the main mold cavity, the demolding top shaft extends upward and pushes the inner plug shaft to move upward and enter the mold cavity of the main mold to achieve demolding. When the curved flow channel is connected to the bottom of the cylindrical part of the main mold cavity, powder can be input from the bottom into the mold cavity of the main mold through the curved flow channel.

[0005] The bottom of the inner plug shaft is fixedly provided with a bottom convex shaft, and the lower end of the bottom convex shaft is fixedly provided with an end plate; the upper end of the demolding top shaft is fixedly provided with a sliding engagement part. By switching the slider, the inner plug shaft is driven to slide horizontally to directly above the demolding top shaft, so that the sliding engagement part and the end plate part can be matched in a limiting engagement.

[0006] The end of the curved flow channel is connected to a telescopic tube, and a fixed sleeve is fitted on the outside of the telescopic tube. The fixed sleeve is fixedly installed with the pressure plate. When the switching slider slides in the slide groove of the plate, the telescopic tube moves axially relative to the fixed sleeve.

[0007] A powder hopper is connected to the upper part of the fixed sleeve, and a pusher screw is rotatably installed in the fixed sleeve. The powder is placed in the powder hopper and pushed and conveyed into the telescopic tube by the rotation of the pusher screw.

[0008] The switching slider has a vertical cylindrical cavity. When the curved flow channel is connected to the bottom of the cylindrical part of the main mold cavity, the vertical cylindrical cavity is coaxial with the main mold. The upper end of the vertical cylindrical cavity is connected to the curved flow channel, and the lower end extends outward.

[0009] An oscillating pusher is inserted into the vertical column cavity. A limiting wall groove is formed on the inner wall of the vertical column cavity. A limiting wall protrusion is fixedly provided on the surface of the oscillating pusher. The limiting wall protrusion is slidably disposed in the limiting wall groove. When the limiting wall protrusion moves to the bottom of the limiting wall groove, the upper end of the oscillating pusher is flush with the inner wall surface of the arc-shaped flow channel.

[0010] The oscillating push column is provided with a reset spring on its exterior. The reset spring applies a downward elastic force to the oscillating push column, causing the oscillating push column to have a downward movement tendency.

[0011] The demolding top shaft has an internal cavity, and a split inner shaft is inserted into the demolding top shaft. The split inner shaft is coaxial with the demolding top shaft. A pressure ring is fixedly provided on the surface of the split inner shaft. The pressure ring is located inside the shaft cavity. A downward pressure spring is provided on the upper part of the pressure ring. The downward pressure spring applies pressure to the pressure ring, causing the split inner shaft to tend to move downward.

[0012] A side through groove is provided through the demolding top shaft. The lower end of the split inner shaft extends into the side through groove. A beveled pusher is provided on one side of the side through groove. An electromagnetic telescopic controller is fixedly provided on the pressure plate. The electromagnetic telescopic controller controls the extension and retraction of the beveled pusher. When the beveled pusher extends, it will insert into the side through groove, squeezing and pushing the split inner shaft upward, so that the split inner shaft pushes the lower part of the oscillating pusher to move upward.

[0013] The switching slider is fixedly provided with a screw sleeve, and a screw shaft is screwed into the screw sleeve. By rotating the screw shaft, the switching slider can be driven to slide in the slide groove of the platform. A screw motor is fixedly provided on the pressure plate, and the screw shaft is controlled to rotate by the screw motor.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The press of this invention, through the combination of a switching slider, an arc-shaped flow channel, and an inner plug shaft, can input powder from the bottom of the main mold into the cylindrical part of the mold cavity. The powder is input from the bottom of the cylindrical part of the mold cavity until the mold cavity is full, which can reduce the risk of material shortage in the cylindrical part of the mold cavity. It can also automatically close the bottom during pressing and drive the inner plug shaft to move upward during demolding, realizing the function switching of multiple states, reducing the workload of workers, and only requiring the powder to be replenished to the powder hopper.

[0015] This invention, through the combination of a set of oscillating pusher, split internal shaft and inclined pusher, etc., can vibrate the powder upward when it is input from the bottom of the cylindrical part of the mold cavity. By applying vibration to the powder, the voids in the powder are reduced, and the risk of material shortage in the cylindrical part of the mold cavity is further reduced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is another schematic diagram of the overall structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the powder hopper of the present invention.

[0019] Figure 4 This is a partial three-dimensional half-section diagram of the present invention.

[0020] Figure 5 This is a three-dimensional half-sectional view of the pressure-bearing platform of the present invention.

[0021] Figure 6 for Figure 5 Enlarged schematic diagram of region A in the middle.

[0022] Figure 7 This is a partial three-dimensional half-section front view of the present invention.

[0023] Figure 8 This is a three-dimensional half-section front view of the switching slider of the present invention.

[0024] Figure 9 This is a schematic diagram of the demolding top shaft structure of the present invention.

[0025] Figure 10This is a schematic diagram of the switching slider structure of the present invention.

[0026] Figure 11 This is a schematic diagram of another angle structure of the slider switching device of the present invention.

[0027] In the diagram: 1. Frame body; 2. Pressure plate; 3. Mold pressure column; 4. Main mold; 5. Platen slide groove; 6. Switching slider; 7. Curved flow channel; 8. Inner plug shaft; 9. Demolding top shaft; 801. Bottom end convex shaft; 802. End plate; 803. Sliding fastening part; 701. Telescopic insert; 702. Fixed sleeve; 703. Powder hopper; 704. Propulsion screw; 901. Vertical column cavity; 902. Vibrating push column; 903. Limiting wall groove; 904. Limiting wall protrusion; 905. Reset spring; 906. Shaft inner cavity; 907. Split internal shaft; 908. Pressure ring part; 909. Downward pressure spring; 910. Side through groove; 911. Beveled push part; 912. Electromagnetic telescopic controller; 601. Screw sleeve part; 602. Screw shaft; 603. Screw motor; 101. Pressure spindle; 102. Positioning mold base; 103. Positioning slide rail; 913. Demolding hydraulic cylinder; 914. Connecting ring cover. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1 to 11 This invention provides a technical solution: a press for producing slag-blocking rods, comprising a frame body 1 and a pressure plate 2 fixedly mounted on the frame body 1. The pressure plate 2 is horizontally arranged and can be welded onto the frame body 1. A main mold 4 is fixedly mounted on the pressure plate 2, and a mold pressure column 3 capable of lifting and moving is arranged above the main mold 4. The internal cavity structure of the main mold 4 is as follows: Figure 5 As shown, the upper part is a truncated cone section, and the lower part is a cylindrical section, which are interconnected. The mold pressure column 3 is inserted into the truncated cone section for pressing and shaping. During the powder filling stage, the mold pressure column 3 is removed from the truncated cone section to avoid affecting the powder filling.

[0030] like Figure 1 and Figure 2As shown, a pressure spindle 101 is installed in the frame 1, and a positioning mold base 102 is fixedly installed at the lower end of the pressure spindle 101. Positioning slide rails 103 are also installed on the outside of the frame 1 by screws. Four sets of positioning slide rails 103 are located at the four corners of the positioning mold base 102. The positioning slide rails 103 are vertically arranged, and the positioning mold base 102 slides and limits the movement of the positioning slide rails 103, thereby improving the stability of the positioning mold base 102. This ensures that the positioning mold base 102 can only move up and down under the drive of the pressure spindle 101. The mold pressure column 3 is fixedly installed at the bottom of the positioning mold base 102 by screws, and can be replaced by removing the screws. Powder is filled into the interior of the main mold 4, and the mold pressure column 3 presses down and cooperates with the main mold 4 to produce the blank of the slag-blocking rod. The pressure plate 2 has a plate groove 5, in which a sliding controllable switching slider 6 is installed. The plate groove 5 limits the movement of the switching slider 6, ensuring contact accuracy between the upper surface of the switching slider 6 and the lower surface of the main mold 4, preventing powder leakage. The switching slider 6 contains an arc-shaped flow channel 7 and an inner plug shaft 8. The arc-shaped flow channel 7 is L-shaped, and the inner plug shaft 8 is cylindrical, with a diameter slightly smaller than the inner diameter of the cylindrical portion of the main mold 4. By sliding the switching slider 6, the arc-shaped flow channel 7 or the inner plug shaft 8 can be switched to connect with the bottom of the cylindrical portion of the mold cavity of the main mold 4. Below the main mold 4, there is also a demolding top shaft 9 coaxial with the cylindrical portion of its mold cavity. When the inner plug shaft 8 connects with the bottom of the cylindrical portion of the mold cavity of the main mold 4, the demolding top shaft 9 extends upward, pushing the inner plug shaft 8 upward into the mold cavity of the main mold 4 to achieve demolding. Figure 4 and Figure 5 As shown, a connecting ring cover 914 is welded and fixedly installed on the lower part of the pressure plate 2. A demolding hydraulic cylinder 913 is fixedly installed on the connecting ring cover 914 by screws. The demolding top shaft 9 is raised and lowered by the demolding hydraulic cylinder 913. When the demolding hydraulic cylinder 913 controls the demolding top shaft 9 to retract downward to the limit position, the upper end face of the demolding top shaft 9 is flush with the lower inner surface of the plate slide groove 5. When the curved flow channel 7 is connected to the bottom of the cylindrical part of the mold cavity of the main mold 4, powder can be input from the bottom into the mold cavity of the main mold 4 through the curved flow channel 7.

[0031] The bottom of the inner plug shaft 8 is fixedly provided with a bottom end convex shaft 801, and the lower end of the bottom end convex shaft 801 is fixedly provided with an end plate portion 802, the diameter of which is larger than the diameter of the bottom end convex shaft 801; the upper end of the demolding top shaft 9 is fixedly provided with a sliding engagement portion 803. For a clearer structural illustration, please refer to [reference needed]. Figure 9 As shown, by switching the slider 6, the inner plug shaft 8 is driven to slide horizontally to directly above the demolding top shaft 9, so that the sliding engagement part 803 and the end plate part 802 can be limited and engaged.

[0032] The end of the curved flow channel 7 is connected to a telescopic tube 701, and a fixed sleeve 702 is sleeved on the outside of the telescopic tube 701. The fixed sleeve 702 is fixedly installed with the pressure plate 2. When the switching slider 6 slides in the slide groove 5 of the plate, the telescopic tube 701 moves axially relative to the fixed sleeve 702.

[0033] A powder hopper 703 is connected to the upper part of the fixed sleeve 702. A push screw 704 is rotatably installed in the fixed sleeve 702. The powder is placed in the powder hopper 703 and pushed and conveyed into the telescopic tube 701 by the rotation of the push screw 704.

[0034] The switching slider 6 has a vertical cylindrical cavity 901. When the curved flow channel 7 is connected to the bottom of the cylindrical part of the mold cavity of the main mold 4, the vertical cylindrical cavity 901 is coaxial with the main mold 4. The upper end of the vertical cylindrical cavity 901 is connected to the curved flow channel 7, and the lower end is connected to the outside.

[0035] An oscillating pusher 902 is inserted into the vertical column cavity 901. A limiting wall groove 903 is opened on the inner wall of the vertical column cavity 901. A limiting wall protrusion 904 is fixedly provided on the surface of the oscillating pusher 902. The limiting wall protrusion 904 is slidably positioned in the limiting wall groove 903. When the limiting wall protrusion 904 moves to the bottom of the limiting wall groove 903, the upper end of the oscillating pusher 902 is flush with the inner wall surface of the arc-shaped flow channel 7.

[0036] The oscillating push column 902 is provided with a reset spring 905 on its exterior. The reset spring 905 applies a downward elastic force to the oscillating push column 902, so that the oscillating push column 902 has a downward movement tendency.

[0037] The demolding top shaft 9 has an inner shaft cavity 906 inside. A split inner shaft 907 is inserted into the demolding top shaft 9. The split inner shaft 907 is coaxial with the demolding top shaft 9. A pressure ring 908 is fixedly provided on the surface of the split inner shaft 907. The pressure ring 908 is located inside the inner shaft cavity 906. A downward pressure spring 909 is provided on the upper part of the pressure ring 908. The downward pressure spring 909 applies pressure to the pressure ring 908, so that the split inner shaft 907 has a downward tendency to move.

[0038] A side through groove 910 is provided through the demolding top shaft 9. The lower end of the split inner shaft 907 extends into the side through groove 910. A beveled pusher 911 is provided on one side of the side through groove 910. An electromagnetic telescopic controller 912 is fixedly provided on the pressure plate 2. The electromagnetic telescopic controller 912 controls the telescopic movement of the beveled pusher 911. The electromagnetic telescopic controller 912 can use electromagnetic technology principles, in conjunction with a spring reset structure, to control the telescopic movement of the beveled pusher 911 and has a sufficient telescopic frequency. The specific structure of the electromagnetic telescopic controller 912 will not be described in detail in this invention. When the beveled pusher 911 extends, it will insert into the side through groove 910, squeezing and pushing the split inner shaft 907 upward, so that the split inner shaft 907 pushes the lower part of the oscillating pusher 902 upward.

[0039] A screw sleeve 601 is fixedly installed in the switching slider 6, and a screw shaft 602 is screwed into the screw sleeve 601. By rotating the screw shaft 602, the switching slider 6 can be driven to slide in the slide groove 5 of the platform. A screw motor 603 is fixedly installed on the pressure plate 2, and the screw shaft 602 is controlled to rotate by the screw motor 603.

[0040] When using the press of this invention, the operator only needs to fill the powder hopper 703 with the slag-blocking rod powder. Initially, as... Figure 5 and Figure 6 As shown, the cylindrical part of the mold cavity of the main mold 4 is in communication with the curved flow channel 7. The push screw 704 can be driven to rotate by a motor. The push screw 704 can also be driven by other devices. The driving device of the push screw 704 is omitted in the figure of this invention.

[0041] When the screw 704 rotates, the powder in the powder hopper 703 is pushed by the helical blades to the fixed sleeve 702 and the telescopic tube 701. The powder is input from the bottom of the main mold 4 through the arc-shaped flow channel 7 until the mold cavity of the main mold 4 is filled. Since the powder enters directly from the bottom of the cylindrical part of the mold cavity of the main mold 4, there is a squeezing force during the upward conveying of the powder, which can reduce the risk of material shortage in the cylindrical part.

[0042] After the powder fills the cavity of the main mold 4, the push screw 704 is stopped from rotating, and the screw motor 603 is rotated, so that the screw motor 603 drives the screw shaft 602 to rotate, thereby driving the switching slider 6 to move to the right.

[0043] After the switching slider 6 moves to the right and is in place, the curved flow channel 7 will be misaligned with the cylindrical part of the main mold cavity 4, while the inner plug shaft 8 will be coaxially aligned with the cylindrical part of the main mold cavity 4; for example Figure 6 As shown, the bottom convex shaft 801 and the end plate portion 802 will also engage with the sliding fastening portion 803 after sliding.

[0044] The bottom of the main mold 4 is sealed by the inner plug shaft 8. At this time, the mold pressure column 3 can be controlled to move down and press. After pressing, the mold pressure column 3 is removed first, and then the demolding hydraulic cylinder 913 controls the demolding top shaft 9 to move up and extend. The demolding top shaft 9 pushes the inner plug shaft 8 into the cylindrical part of the mold cavity of the main mold 4, pushing the blank in the main mold 4 to demold. After demolding, the demolding top shaft 9 moves down and resets. During the downward movement of the demolding top shaft 9, since the sliding fastening part 803 is stuck on the upper part of the end plate part 802, the demolding top shaft 9 can pull and drag the inner plug shaft 8 to follow the demolding top shaft 9 downward and reset.

[0045] After the ejector pin 9 is reset, the switching slider 6 is moved to the left, causing the curved flow channel 7 to align with the bottom of the main mold 4 again. At this time, the bottom convex pin 801 and the end plate 802 are removed from the sliding engagement part 803, and the structure is reset to its initial state, ready for the next pressing production. By controlling the machining accuracy, the end surface of the inner plug pin 8 is ensured to be flush with the surface of the switching slider 6, ensuring smooth structural operation.

[0046] During the above process, when the powder is input into the bottom of the cavity of the main mold 4 through the curved flow channel 7, such as Figure 5 As shown, the electromagnetic telescopic controller 912 controls the telescopic movement of the inclined pusher 911. When the inclined pusher 911 extends, it inserts into the side through groove 910. The inclined surface on the inclined pusher 911 pushes the inner shaft 907 of the split body upward. When the inclined pusher 911 retracts, it moves out of the side through groove 910. At this time, the inner shaft 907 of the split body moves downward and resets under the elastic force of the compression spring 909. This makes the inner shaft 907 of the split body exhibit vertical telescopic movement.

[0047] When the inner shaft 907 moves upward, it presses against the bottom of the oscillating pusher 902, pushing it upward. When the inner shaft 907 moves downward, the oscillating pusher 902 moves downward and resets, thus enabling the oscillating pusher 902 to vibrate the powder along the axial direction of the cylindrical part of the inner cavity of the main mold 4. This reduces the probability of large-area powder voids between powder particles, further reducing the risk of material shortage in the cylindrical part of the mold cavity. Moreover, the above structure does not affect the movement of the switching slider 6 and is compatible with the action structure of the switching slider 6.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A press for producing slag-blocking bars, comprising a frame and a pressure plate fixedly mounted on the frame, characterized in that: The main mold is fixedly installed on the pressure plate. A mold pressure column that can be lifted and moved is set above the main mold. Powder is filled inside the main mold. The mold pressure column presses down and cooperates with the main mold to realize the production of the slag-blocking rod blank. The pressure plate has a plate groove, and a sliding control slider is provided in the plate groove. The sliding control slider is equipped with an arc-shaped flow channel and an inner plug shaft. By sliding the sliding control slider, the arc-shaped flow channel or the inner plug shaft can be switched to connect with the bottom of the cylindrical part of the main mold cavity. The main mold is also provided with a demolding top shaft coaxial with the cylindrical part of the mold cavity. When the inner plug shaft is connected with the bottom of the cylindrical part of the main mold cavity, the demolding top shaft extends upward and pushes the inner plug shaft to move upward and enter the mold cavity of the main mold to achieve demolding. When the arc-shaped flow channel is connected with the bottom of the cylindrical part of the main mold cavity, powder can be input from the bottom into the mold cavity of the main mold through the arc-shaped flow channel.

2. The press for producing slag-blocking rods according to claim 1, characterized in that: The bottom of the inner plug shaft is fixedly provided with a bottom end convex shaft, and the lower end of the bottom end convex shaft is fixedly provided with an end plate. The upper end of the demolding top shaft is fixedly provided with a sliding engagement part. By switching the slider, the inner plug shaft is driven to slide horizontally to directly above the demolding top shaft, so that the sliding engagement part can be matched with the end plate part for limiting engagement.

3. The press for producing slag-blocking rods according to claim 1, characterized in that: The end of the curved flow channel is connected to a telescopic tube, and a fixed sleeve is fitted on the outside of the telescopic tube. The fixed sleeve is fixedly installed with the pressure plate. When the switching slider slides in the slide groove of the plate, the telescopic tube moves axially relative to the fixed sleeve.

4. The press for producing slag-blocking rods according to claim 3, characterized in that: A powder hopper is connected to the upper part of the fixed sleeve, and a pusher screw is rotatably installed in the fixed sleeve. The powder is placed in the powder hopper and pushed and conveyed into the telescopic tube by the rotation of the pusher screw.

5. The press for producing slag-blocking rods according to claim 1, characterized in that: The switching slider has a vertical cylindrical cavity. When the curved flow channel is connected to the bottom of the cylindrical part of the main mold cavity, the vertical cylindrical cavity is coaxial with the main mold. The upper end of the vertical cylindrical cavity is connected to the curved flow channel, and the lower end extends outward.

6. The press for producing slag-blocking rods according to claim 5, characterized in that: An oscillating pusher is inserted into the vertical column cavity. A limiting wall groove is formed on the inner wall of the vertical column cavity. A limiting wall protrusion is fixedly provided on the surface of the oscillating pusher. The limiting wall protrusion is slidably disposed in the limiting wall groove. When the limiting wall protrusion moves to the bottom of the limiting wall groove, the upper end of the oscillating pusher is flush with the inner wall surface of the arc-shaped flow channel.

7. The press for producing slag-blocking rods according to claim 6, characterized in that: The oscillating push column is provided with a reset spring on its exterior. The reset spring applies a downward elastic force to the oscillating push column, causing the oscillating push column to have a downward movement tendency.

8. The press for producing slag-blocking rods according to claim 6, characterized in that: The demolding top shaft has an internal cavity, and a split inner shaft is inserted into the demolding top shaft. The split inner shaft is coaxial with the demolding top shaft. A pressure ring is fixedly provided on the surface of the split inner shaft. The pressure ring is located inside the shaft cavity. A downward pressure spring is provided on the upper part of the pressure ring. The downward pressure spring applies pressure to the pressure ring, causing the split inner shaft to tend to move downward.

9. The press for producing slag-blocking rods according to claim 8, characterized in that: A side through groove is provided through the demolding top shaft. The lower end of the split inner shaft extends into the side through groove. A beveled pusher is provided on one side of the side through groove. An electromagnetic telescopic controller is fixedly provided on the pressure plate. The electromagnetic telescopic controller controls the telescopic movement of the beveled pusher. When the beveled pusher extends, it will insert into the side through groove, squeezing and pushing the split inner shaft upward, so that the split inner shaft pushes the lower part of the oscillating pusher to move upward.

10. The press for producing slag-blocking rods according to claim 1, characterized in that: The switching slider is fixedly provided with a screw sleeve, and a screw shaft is screwed into the screw sleeve. By rotating the screw shaft, the switching slider can be driven to slide in the slide groove of the platform. A screw motor is fixedly installed on the pressure plate, and the screw shaft is rotated by the screw motor.

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