A double-end cold press device with air-knife assembly

Abstract

The application relates to the technical field of cold presses, in particular to a double-head cold press device with an air knife assembly, which comprises a device base, a cold pressing base, a cold pressing die seat and a double-head hydraulic cylinder are sequentially arranged on the top of the device base from bottom to top, the double-head hydraulic cylinder is used for driving the cold pressing die seat to ascend and descend, a positioning die frame with horizontal moving function is arranged on the top of the cold pressing base, a lower top pipe is inserted into the cold pressing base, an upper top pipe is coaxially arranged on the top of the lower top pipe, a plugging cornice is fixed to the upper end of the upper top pipe, and a state switching cylinder is arranged on the outer cover of the plugging cornice; the double-head cold press device can clean oil stains and dust on the surface of a workpiece through the cooperation of the positioning die frame, the lower top pipe and the upper top pipe and other structures before cold pressing processing of the workpiece, so that the processing quality is improved.

Description

Technical Field

[0001] This invention relates to the field of cold press technology, specifically to a double-head cold press device with an air knife assembly. Background Technology

[0002] A cold press is a device that applies pressure to a workpiece to flatten or cold-press it into shape. It is widely used in the processing of metals, wood, or other materials, and can shape, straighten, or flatten materials without using high temperatures. In the cold pressing process of small metal workpieces, a robotic arm is used to load the small metal workpieces, which involves using grippers to hold the workpieces. In reality, due to the storage and processing environment, the grippers and the workpiece may have oil, iron filings, dust, or other contaminants on the surface of the workpiece itself or on the surface of the grippers. During cold pressing, oil, iron filings, dust, and other foreign objects will affect the quality of the cold pressing process. Summary of the Invention

[0003] The purpose of this invention is to provide a double-head cold press device with an air knife assembly to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a double-head cold press device with an air knife assembly, comprising a device base, a cold press base, a cold press mold base, and a double-head hydraulic cylinder arranged sequentially from bottom to top on the device base, the double-head hydraulic cylinder being used to drive the cold press mold base to rise and fall, a positioning mold frame with horizontal movement function being arranged above the cold press base, a lower jacking tube being inserted in the cold press base, an upper jacking tube being coaxially arranged above the lower jacking tube, a sealing pressure lip being fixed to the upper end of the upper jacking tube, a state switching cylinder being provided outside the sealing pressure lip, and the upper end of the upper jacking tube being inserted into the state switching cylinder, an air knife assembly being arranged on the upper surface of the cold press base, and a support structure with short-range contraction function being arranged in the cold press base, the support structure cooperating with the lower end of the lower jacking tube and being able to drive the lower jacking tube to rotate.

[0005] The support structure includes a base cavity, a limiting step ring, a lifting action plate, a vent hole, and an annular electromagnet. The base cavity is located inside the cold-pressed base. A limiting step ring is provided on the inner wall surface of the base cavity near the upper part. A lifting action plate is provided in the base cavity. The lifting action plate is rotatably sleeved on the outside of the lower jacking pipe, and can drive the lower jacking pipe to move up and down when the lifting action plate moves up and down. A vent hole is provided through the surface of the lifting action plate. An annular electromagnet is provided below the lifting action plate. The limiting step ring limits and blocks the annular electromagnet. When the annular electromagnet is energized, it can magnetically engage with the lifting action plate.

[0006] A positioning guide shaft is fixed to the surface of the annular electromagnet, and the positioning guide shaft passes through the lifting action plate. An outer spring is provided below the annular electromagnet. A positioning bottom ring is fixed to the lower surface of the base cavity, and an inner spring is provided in the positioning bottom ring. The upper end of the inner spring rests against the lower surface of the lifting action plate.

[0007] The lower jacking pipe is airtightly inserted through the upper top wall of the base cavity. An air intake arch is fixed at the lower end of the lower jacking pipe, and a drive square shaft is fixed below the air intake arch. A square shaft sleeve is airtightly inserted through the lower bottom wall of the base cavity. The drive square shaft is inserted into the square shaft sleeve. When the square shaft sleeve rotates, it can drive the drive square shaft to rotate. A servo motor is fixed in the device base. The servo motor is used to drive the square shaft sleeve to rotate. A high-pressure air intake bottom pipe is connected to the outside of the base cavity.

[0008] An air inlet pipe is connected to the surface of the state switching cylinder. A holding spring is installed in the state switching cylinder, and the holding spring presses on the top of the sealing edge. An inner ring baffle is provided on the inner wall surface of the state switching cylinder, and the inner ring baffle is located above the sealing edge and limits the sealing edge.

[0009] The bottom of the state switching cylinder has a bottom hole. When the sealing pressure is pressed on the bottom hole, the bottom hole can be sealed with an airtight seal. The bottom of the state switching cylinder is provided with a shrink hood. The upper top pipe passes through the shrink hood. The shrink hood is connected to the bottom hole. The lower edge of the shrink hood is provided with an outward expansion. A beam matching ring is fixed on the surface of the upper top pipe. The beam matching ring can move upward to cooperate with the outward expansion to form a beam gap.

[0010] A mold frame track is provided above the cold pressing base, and a track slider is slidably arranged in the mold frame track. The positioning mold frame and the track slider are detachably and fixedly installed. The bottom height of the positioning mold frame is higher than the upper surface height of the cold pressing mold on the cold pressing base. A track cylinder is provided on one side of the positioning mold frame, and the track cylinder is used to drive the positioning mold frame to move.

[0011] The side wall surface of the positioning mold frame is provided with a mold frame through hole. An upper telescopic cylinder and a lower telescopic cylinder are fixed to the outside of the positioning mold frame. The upper telescopic cylinder is located above the lower telescopic cylinder. Telescopic shafts are respectively provided in the upper telescopic cylinder and the lower telescopic cylinder, and the telescopic shafts pass through the mold frame through hole.

[0012] The lower jacking pipe and the upper jacking pipe are respectively equipped with an internal electrically controlled air valve. The upper end of the lower jacking pipe and the lower end of the upper jacking pipe are respectively fixed with a contact plug. An air jet hole is opened through the contact plug. A vertical cylinder is provided above the state switching cylinder. The vertical cylinder is used to drive the state switching cylinder to move up and down.

[0013] The air knife assembly has an air knife groove on its upper side and an air supply groove on its lower side. The base cavity is connected to the air knife groove through the air supply groove, and an air knife electrically controlled air valve is installed in the air supply groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The double-head cold press device of the present invention, through the combination of a positioning mold frame, a lower top tube and an upper top tube, can perform high-pressure cleaning of oil and dust on the surface of the workpiece before cold pressing, thereby improving the processing quality; and the positioning mold frame makes loading safer, preventing hands or grippers from reaching under the cold press mold base during loading, thus reducing the probability of accidents.

[0016] By using the air jet holes in the contact pad, high-pressure air jets can be applied to the clamping and pressing area before the lower and upper jacking tubes clamp the workpiece, blowing oil and debris outwards and reducing cleaning dead zones. Subsequently, the lower and upper jacking tubes work together to clamp and move the workpiece downwards, causing it to rotate. The centrifugal force generated by the rotation, combined with the air jets from the air knife assembly and the outer flange, effectively cleans the oil and debris on the workpiece surface. Compared to the single cleaning method of direct airflow, this method has fewer dead zones, stronger cleaning power, and the centrifugal force makes it easier for oil to be removed.

[0017] By setting the structure in the state switching cylinder, the upper jacking pipe can achieve automatic conduction switching. Before clamping the workpiece, only air is sprayed through the upper jacking pipe, at which time the sealing pressure can automatically close the bottom hole. After clamping the workpiece, the clamping pressure drives the upper jacking pipe to move upward relative to the state switching cylinder, so that the sealing pressure separates from the bottom hole, thereby automatically switching to the shrink hood air spray state to perform diffused air cleaning on the upper surface of the workpiece, thereby reducing the cost of automation control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of region A in the middle.

[0020] Figure 3 This is a front view of the overall structure of the present invention.

[0021] Figure 4 This is another schematic diagram of the overall structure of the present invention.

[0022] Figure 5 This is a side view of the overall structure of the present invention.

[0023] Figure 6 This is a three-dimensional half-sectional schematic diagram of the present invention.

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of region B in the middle.

[0025] Figure 8 for Figure 6 Enlarged schematic diagram of region C in the middle.

[0026] Figure 9 This is a three-dimensional half-section front view of the present invention.

[0027] Figure 10 for Figure 9 Enlarged schematic diagram of region D in the middle.

[0028] In the diagram: 1. Device base; 2. Cold pressing base; 3. Cold pressing mold base; 4. Double-headed hydraulic cylinder; 5. Positioning mold frame; 6. Lower jacking pipe; 7. Upper jacking pipe; 8. State switching cylinder; 9. Air knife assembly; 10. Sealing pressure rim; 601. Base cavity; 602. Limiting step ring; 603. Lifting action plate; 604. Vent hole; 605. Ring electromagnet; 606. Positioning guide shaft; 607. Outer spring; 608. Positioning bottom ring; 609. Inner spring; 610. Air intake arch; 611. Transmission square shaft; 612. Square shaft sleeve; 613. Servo electric... Machine; 614, High-pressure air inlet bottom pipe; 801, Air inlet top pipe; 802, Holding spring; 803, Inner ring baffle; 804, Bottom hole; 805, Shrinking hood; 806, Outer bulge; 807, Beam fitting ring; 201, Mold frame track; 202, Track slider; 203, Track cylinder; 501, Mold frame through hole; 502, Upper telescopic cylinder; 503, Lower telescopic cylinder; 701, In-pipe electric control air valve; 702, Contact plug; 808, Vertical cylinder; 901, Air knife groove; 902, Air supply groove; 903, Air knife electric control air valve; 11, Workpiece. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1 to 10This invention provides a technical solution: a double-head cold press device with an air knife assembly, comprising a device base 1, a cold press base 2, a cold press mold base 3, and a double-head hydraulic cylinder 4 arranged sequentially from bottom to top on the device base 1. The double-head hydraulic cylinder 4 is used to drive the cold press mold base 3 to rise and fall. A positioning mold frame 5 with horizontal movement function is arranged above the cold press base 2. A lower jacking pipe 6 is inserted in the cold press base 2. An upper jacking pipe 7 is coaxially arranged above the lower jacking pipe 6. A sealing pressure rim 10 is fixed to the upper end of the upper jacking pipe 7. A state switching cylinder 8 is provided on the outside of the sealing pressure rim 10, and the upper end of the upper jacking pipe 7 is inserted in the state switching cylinder 8. An air knife assembly 9 is arranged on the upper surface of the cold press base 2. A support structure with short-range contraction function is arranged in the cold press base 2. The support structure cooperates with the lower end of the lower jacking pipe 6 and can drive the lower jacking pipe 6 to rotate.

[0031] The supporting structure includes a base cavity 601, a limiting step ring 602, a lifting plate 603, a vent hole 604, and a ring electromagnet 605. The base cavity 601 is located inside the cold-pressed base 2. The limiting step ring 602 is provided on the inner wall surface of the base cavity 601 near the upper part. The lifting plate 603 is provided in the base cavity 601. The lifting plate 603 is rotatably sleeved on the outside of the lower jacking pipe 6, and the lifting plate 603 can drive the lower jacking pipe 6 to move up and down when it moves up and down. A vent hole 604 is provided through the surface of the lifting plate 603. A ring electromagnet 605 is provided, and a limiting step ring 602 limits and blocks the ring electromagnet 605. When the ring electromagnet 605 is energized, it can magnetically engage with the lifting plate 603. A positioning guide shaft 606 is fixed on the surface of the ring electromagnet 605. The positioning guide shaft 606 passes through the lifting plate 603. An outer spring 607 is provided below the ring electromagnet 605. A positioning bottom ring 608 is fixed on the lower surface of the base cavity 601. An inner spring 609 is provided in the positioning bottom ring 608. The upper end of the inner spring 609 rests on the lower surface of the lifting plate 603.

[0032] The lower jacking pipe 6 is airtightly inserted through the upper top wall of the base cavity 601. An air intake arch 610 is fixed at the lower end of the lower jacking pipe 6. A drive square shaft 611 is fixed below the air intake arch 610. A square shaft sleeve 612 is airtightly inserted through the lower bottom wall of the base cavity 601. The drive square shaft 611 is inserted into the square shaft sleeve 612. When the square shaft sleeve 612 rotates, it can drive the drive square shaft 611 to rotate. A servo motor 613 is fixed in the device base 1. The servo motor 613 is used to drive the square shaft sleeve 612 to rotate. A high-pressure air intake bottom pipe 614 is connected to the outside of the base cavity 601.

[0033] An air inlet jack pipe 801 is connected to the surface of the state switching cylinder 8. A pressure spring 802 is installed in the state switching cylinder 8, pressing on the top of the sealing lip 10. An inner ring baffle 803 is provided on the inner wall surface of the state switching cylinder 8, located above the sealing lip 10 and limiting its position. A bottom hole 804 is provided through the bottom of the state switching cylinder 8. When the sealing lip 10 is pressed on the bottom hole 804, it can gas-tightly seal the bottom hole 804. A shrink hood 805 is provided at the bottom of the state switching cylinder 8. The upper jack pipe 7 passes through the shrink hood 805 and is connected to the bottom hole 804. An outer expansion lip 806 is provided on the lower edge of the shrink hood 805. A beam matching ring 807 is fixed on the surface of the upper jack pipe 7. The beam matching ring 807 can move upward to cooperate with the outer expansion lip 806 to form a beam gap.

[0034] A mold frame track 201 is provided above the cold pressing base 2, and a track slider 202 is slidably arranged in the mold frame track 201. The positioning mold frame 5 and the track slider 202 are detachably and fixedly installed. The bottom height of the positioning mold frame 5 is higher than the upper surface height of the cold pressing mold on the cold pressing base 2. A track cylinder 203 is provided on one side of the positioning mold frame 5, and the track cylinder 203 is used to drive the positioning mold frame 5 to move.

[0035] The side wall surface of the positioning mold frame 5 is provided with a mold frame through hole 501. An upper telescopic cylinder 502 and a lower telescopic cylinder 503 are fixed to the outside of the positioning mold frame 5. The upper telescopic cylinder 502 is located above the lower telescopic cylinder 503. Telescopic shafts are respectively provided in the upper telescopic cylinder 502 and the lower telescopic cylinder 503. Both the upper telescopic cylinder 502 and the lower telescopic cylinder 503 can control the telescopic shaft to extend and retract. The upper telescopic cylinder 502 and the lower telescopic cylinder 503 can be miniature cylinders or electromagnetically controlled. The aforementioned telescopic shafts pass through the mold frame through hole 501.

[0036] The lower jacking pipe 6 and the upper jacking pipe 7 are respectively equipped with an internal electrically controlled air valve 701. The upper end of the lower jacking pipe 6 and the lower end of the upper jacking pipe 7 are respectively fixed with a contact plug 702. An air jet hole is opened through the contact plug 702. A vertical cylinder 808 is installed above the state switching cylinder 8. The vertical cylinder 808 is used to drive the state switching cylinder 8 to move up and down.

[0037] An air knife slot 901 is provided on the upper side of the air knife assembly 9, and an air supply slot 902 is provided on the lower side of the air knife assembly 9. The base cavity 601 is connected to the air knife slot 901 through the air supply slot 902. An air knife electric control valve 903 is provided in the air supply slot 902. The pipe electric control valve 701 is the same as the air knife electric control valve 903. Both are electrically controlled valve structures that are embedded in the pipe cavity.

[0038] In use, both the high-pressure air inlet bottom pipe 614 and the air inlet top pipe 801 are connected to the high-pressure air source. The positioning mold frame 5 can be replaced according to different workpieces 11. The slot in the positioning mold frame 5 is adapted to the workpiece 11, thereby performing positioning.

[0039] First, the workpiece 11 is placed in the positioning mold frame 5 using mechanical grippers or other methods, such as... Figure 1 and 2 As shown in the figure; before the workpiece 11 is placed into the positioning mold frame 5, the telescopic shaft of the lower telescopic cylinder 503 first extends through the mold frame through hole 501 to limit the lower part of the workpiece 11. After the workpiece 11 is placed in place, the upper telescopic cylinder 502 extends.

[0040] At this time, as Figure 7 As shown, the annular electromagnet 605 is energized and attracted to the lifting plate 603. The lifting plate 603 then drives the lower jacking tube 6 to move downwards. Figure 10 As shown, a certain distance is maintained from the lower surface of the workpiece 11; the internal electric air valves 701 in the lower jacking pipe 6 and the upper jacking pipe 7 are opened, so that the upper end of the lower jacking pipe 6 and the lower end of the upper jacking pipe 7 spray high-pressure airflow through the air jet holes of the contact pad 702 to clean the part that the contact pad 702 is about to contact; the vertical cylinder 808 drives the state switching cylinder 8 to descend; when the lower end of the upper jacking pipe 7 is about to contact the workpiece 11, the internal electric air valve 701 closes and stops spraying air.

[0041] As the state switching cylinder 8 continues to descend, the annular electromagnet 605 is de-energized, releasing the lifting plate 603. The lifting plate 603 rises under the force of the inner spring 609 and contacts the workpiece 11. This controls the simultaneous retraction of the upper telescopic cylinder 502 and the lower telescopic cylinder 503. As the state switching cylinder 8 continues to descend, the upper jacking pipe 7 and the lower jacking pipe 6 work together to clamp the workpiece 11 and push it downwards. When the workpiece 11 approaches the air knife assembly 9, the vertical cylinder 808 stops extending. At this point, the upper... The jacking pipe 7 is subjected to a reaction force and rises relative to the state switching cylinder 8, causing the sealing pressure rim 10 to separate from the bottom hole 804. The airflow in the state switching cylinder 8 enters the shrinking hood 805 through the bottom hole 804 and is ejected through the gap between the flow-coating ring 807 and the outer expansion rim 806, which sprays high-pressure diffused air onto the upper surface of the workpiece 11. The air knife electronic control valve 903 is turned on, so that the high-pressure airflow in the base cavity 601 is ejected through the air knife groove 901, forming an air knife to clean the lower surface of the workpiece 11.

[0042] The servo motor 613 drives the transmission square shaft 611 to rotate through the square shaft sleeve 612, causing the lower top tube 6 to rotate. The lower top tube 6 drives the workpiece 11 to rotate through the extrusion action. The centrifugal force generated by the rotation, together with the air jet from the air knife assembly 9 and the outer expansion 806, efficiently cleans the oil and debris on the surface of the workpiece 11.

[0043] Since the servo motor 613 is a servo motor, it can precisely control the number of rotations of the workpiece 11, ensuring that the workpiece 11 remains vertically aligned with the positioning mold frame 5 after rotation. First, the upper telescopic cylinder 502 extends, then the vertical cylinder 808 gradually retracts, causing the upper top tube 7 to rise. The lower top tube 6, supported by elasticity, moves upwards while maintaining clamping on the workpiece 11. When the workpiece 11 contacts the telescopic shaft extended by the upper telescopic cylinder 502, the lower telescopic cylinder 503 extends to its limit. At this time, the vertical cylinder 808 continues to retract, and the annular electromagnet 605 is energized to control the lower top tube 6 to descend to its limit. Figure 10 The state shown is to avoid affecting the movement of the positioning module 5.

[0044] Under the push of the track cylinder 203, the positioning mold frame 5 moves to the top of the cold pressing mold on the cold pressing base 2, so that the workpiece 11 corresponds to the cold pressing mold groove. The lower telescopic cylinder 503 retracts, the workpiece 11 falls into the cold pressing mold groove, the positioning mold frame 5 resets, and the cold pressing mold base 3 moves down for cold pressing.

[0045] 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 double-head cold press device with an air knife assembly, comprising a device base (1), wherein a cold pressing platform (2), a cold pressing mold base (3), and a double-head hydraulic cylinder (4) are arranged sequentially from bottom to top on the device base (1), the double-head hydraulic cylinder (4) being used to drive the cold pressing mold base (3) to rise and fall, characterized in that: A positioning frame (5) with horizontal movement function is provided above the cold pressing base (2). A lower jacking pipe (6) is inserted in the cold pressing base (2). An upper jacking pipe (7) is coaxially arranged above the lower jacking pipe (6). A sealing lip (10) is fixed at the upper end of the upper jacking pipe (7). A state switching cylinder (8) is provided on the outside of the sealing lip (10). The upper end of the upper jacking pipe (7) is inserted in the state switching cylinder (8). An air knife assembly (9) is provided on the upper surface of the cold pressing base (2). A support structure with short-range shrinkage function is provided in the cold pressing base (2). The support structure cooperates with the lower end of the lower jacking pipe (6) and can drive the lower jacking pipe (6) to rotate. An air inlet pipe (801) is connected to the surface of the state switching cylinder (8). A pressure spring (802) is provided in the state switching cylinder (8). The pressure spring (802) presses on the top of the sealing edge (10). An inner ring baffle (803) is provided on the inner wall surface of the state switching cylinder (8). The inner ring baffle (803) is located above the sealing edge (10) and limits the sealing edge (10). A bottom hole (804) is provided through the bottom of the state switching cylinder (8). When the sealing edge (10) presses on the bottom... When the hole (804) is above the hole, the bottom hole (804) can be sealed with air. The bottom of the state switching cylinder (8) is provided with a shrink hood (805). The upper top tube (7) passes through the shrink hood (805). The shrink hood (805) is connected to the bottom hole (804). The lower edge of the shrink hood (805) is provided with an outer expansion (806). The surface of the upper top tube (7) is fixed with a beam matching ring (807). The beam matching ring (807) can move upward to cooperate with the outer expansion (806) to form a beam gap. The lower jacking pipe (6) and the upper jacking pipe (7) are used to eject high-pressure airflow.

2. The double-head cold press device with air knife assembly according to claim 1, characterized in that: The supporting structure includes a base cavity (601), a limiting step ring (602), a lifting action plate (603), a vent (604), and a ring electromagnet (605). The base cavity (601) is located inside the cold-pressed base (2). The limiting step ring (602) is provided on the inner wall surface of the base cavity (601) near the upper part. The lifting action plate (603) is provided in the base cavity (601). The lifting action plate (603) is rotatably sleeved on the base cavity (605). The lower jacking pipe (6) is located outside the lifting plate (603), and the lifting plate (603) can drive the lower jacking pipe (6) to move up and down when it moves up and down. The surface of the lifting plate (603) is provided with a ventilation hole (604). A ring electromagnet (605) is provided below the lifting plate (603). The limiting ring (602) limits and blocks the ring electromagnet (605). After the ring electromagnet (605) is energized, it can magnetically cooperate with the lifting plate (603).

3. A double-head cold press device with an air knife assembly according to claim 2, characterized in that: A positioning guide shaft (606) is fixed on the surface of the annular electromagnet (605). The positioning guide shaft (606) passes through the lifting action plate (603). An outer spring (607) is provided below the annular electromagnet (605). A positioning bottom ring (608) is fixed on the lower surface of the base cavity (601). An inner spring (609) is provided in the positioning bottom ring (608). The upper end of the inner spring (609) rests on the lower surface of the lifting action plate (603).

4. A double-head cold press device with an air knife assembly according to claim 3, characterized in that: The lower jacking pipe (6) is airtightly inserted through the upper top wall of the base cavity (601). An air intake arch (610) is fixed at the lower end of the lower jacking pipe (6). A transmission square shaft (611) is fixed below the air intake arch (610). A square shaft sleeve (612) is airtightly inserted into the lower bottom wall of the base cavity (601). The transmission square shaft (611) is inserted into the square shaft sleeve (612). When the square shaft sleeve (612) rotates, it can drive the transmission square shaft (611) to rotate. A servo motor (613) is fixed in the device base (1). The servo motor (613) is used to drive the square shaft sleeve (612) to rotate. A high-pressure air intake bottom pipe (614) is connected to the outside of the base cavity (601).

5. A double-head cold press device with an air knife assembly according to claim 1, characterized in that: A mold frame track (201) is provided above the cold pressing base (2), and a track slider (202) is slidably provided in the mold frame track (201). The positioning mold frame (5) and the track slider (202) are detachably and fixedly installed. The bottom height of the positioning mold frame (5) is higher than the upper surface height of the cold pressing mold on the cold pressing base (2). A track cylinder (203) is provided on one side of the positioning mold frame (5), and the track cylinder (203) is used to drive the positioning mold frame (5) to move.

6. A double-head cold press device with an air knife assembly according to claim 1, characterized in that: The side wall surface of the positioning mold frame (5) is provided with a mold frame through hole (501). An upper telescopic cylinder (502) and a lower telescopic cylinder (503) are fixed to the outside of the positioning mold frame (5). The upper telescopic cylinder (502) is located above the lower telescopic cylinder (503). The upper telescopic cylinder (502) and the lower telescopic cylinder (503) are respectively provided with telescopic shafts, which pass through the mold frame through hole (501).

7. A double-head cold press device with an air knife assembly according to claim 1, characterized in that: The lower jacking pipe (6) and the upper jacking pipe (7) are respectively provided with an internal electrically controlled air valve (701). The upper end of the lower jacking pipe (6) and the lower end of the upper jacking pipe (7) are respectively fixed with a contact plug (702). An air jet hole is opened through the contact plug (702). A vertical cylinder (808) is provided above the state switching cylinder (8). The vertical cylinder (808) is used to drive the state switching cylinder (8) to move up and down.

8. A double-head cold press device with an air knife assembly according to claim 2, characterized in that: The air knife assembly (9) has an air knife groove (901) on its upper side and an air supply groove (902) on its lower side. The base cavity (601) is connected to the air knife groove (901) through the air supply groove (902). An air knife electric control valve (903) is provided in the air supply groove (902).

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