Plasma cutting machine for steel plate blanking

Abstract

The invention provides a plasma cutting machine for steel plate blanking, which belongs to the technical field of plasma cutting machines and comprises a track, a portal frame, a cutting unit and a supporting plate. Wherein a discharge flue is arranged in the supporting plate, openings are formed in the two ends of the supporting plate, a plurality of evenly-distributed smoke suction holes are formed in the two sides of the supporting plate in the length direction, the two sliding flues are arranged on the inner sides of the two rails respectively, and air suction trolleys are connected to the two sliding flues. The smoke exhaust channel and the smoke suction holes are formed in the supporting plate, the sliding smoke channel and the air suction trolley are arranged on the two sides of the supporting plate, negative-pressure suction force is applied to the two ends of the supporting plate through the air suction trolley, the smoke suction holes in the supporting plate are all in a negative-pressure state under communication of the smoke exhaust channel, and the smoke suction holes are evenly distributed in the length direction of the supporting plate, so that the smoke suction effect is greatly improved. And the whole length area of the supporting plate is in a negative pressure state, smoke generated by cutting can be sucked, and the escape rate of the smoke is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of plasma cutting machines, and in particular relates to a plasma cutting machine for steel plate blanking. Background Technique

[0002] The gantry plasma cutting machine is a numerically controlled metal thermal cutting equipment with a gantry bridge structure and bilateral drive. Using a high-temperature and high-speed plasma arc as the heat source, it melts and blows away the metal of the plate to form a cut. It has the characteristics of stable operation, strong rigidity, high precision, and fast cutting speed. It can automatically blank various metal plates such as carbon steel, stainless steel, and aluminum alloy in any shape, and is widely used for the efficient and precise cutting of large-sized plates in industries such as engineering machinery, steel structures, and sheet metal processing.

[0003] During the cutting of metal by the plasma cutting machine, due to the high-temperature arc, the metal melts and evaporates, reacts with oxygen and nitrogen in the air, generating a large amount of black smoke and irritating fumes, mainly including metal oxide particles, ozone, nitrogen oxides, and harmful gases. Usually, a dust removal device and an exhaust purification system need to be equipped to reduce the harm of the fumes and improve the working conditions.

[0004] At present, the dust removal systems supporting gantry plasma cutting machines are mainly divided into two categories: side suction type and top suction type. The side suction type only sucks the cutting area from one side. Limited by the large-span structure of the equipment, it is difficult to fully capture the fumes, and the escape rate is relatively high; although the top suction type has a relatively better capture effect, a curtain-type smoke hood needs to be installed on the gantry, which has problems such as large occupied space and limited actual use scenarios. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a plasma cutting machine for steel plate blanking to at least partially solve the problems raised in the above background technique.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a plasma cutting machine for steel plate blanking, including: Tracks, with two parallel ones; Gantry, installed on the tracks; Cutting unit, installed on the gantry, and the gantry is configured to be able to drive the cutting unit to perform three-axis movement; Multiple pallets, arranged between the two tracks and evenly distributed along the length direction of the tracks.

[0007] Among them, the inside of the pallet has a smoke exhaust duct, and both ends are provided with openings. A plurality of evenly distributed smoking holes are provided on both sides of the pallet along the length direction, and the smoking holes are communicated with the smoke exhaust duct; Two sliding flues are respectively set inside the two tracks, and each of the two sliding flues is connected to a suction trolley. The input ends of the two suction trolleys are configured to be connected to both ends of the tray respectively, so that a negative pressure area is formed on both sides of the tray along the length direction, and the negative pressure area is configured to correspond to the cutting unit. The gantry is configured to drive the suction trolley to move along the length of the track, so that the negative pressure area and the cutting unit can move synchronously along the length of the track.

[0008] Furthermore, two support beams are provided on the inner side of the two sliding flues, and a connecting plate is fixed on each of the two support beams. The two ends of the support plate are respectively connected to the two connecting plates.

[0009] Furthermore, the connecting plate is provided with a sliding groove on the side facing the suction trolley, the exhaust duct is connected to the sliding groove, a sliding cover slides in the sliding groove, and a connecting hose is connected between the input end of the suction trolley and the sliding cover. The sliding cover is configured to move synchronously with the suction trolley, so that the sliding cover can always be connected to the end of the tray in the corresponding area of ​​the cutting unit.

[0010] Furthermore, the length of the sliding cover is sufficient to connect with at least one of the trays simultaneously.

[0011] Furthermore, a sealing ring is provided on the side of the sliding cover facing the tray.

[0012] Furthermore, a connecting frame is installed on the gantry frame, one end of which is connected to the suction trolley, so that the gantry frame can pull the suction trolley to move via the connecting frame.

[0013] Furthermore, a connecting rod is provided between the suction trolley and the sliding cover, so that the suction trolley can pull the sliding cover to move via the connecting rod.

[0014] Furthermore, the connecting rod includes a sliding tube and a sliding rod that are slidably connected to each other, the sliding tube being connected to the sliding cover and the sliding rod being connected to the suction cart; The connecting rod also includes a spring, with its two ends connected to the suction trolley and the sliding cover, respectively. The spring is configured to apply an elastic thrust to the sliding cover so that the sliding cover can fit tightly against the inner wall of the sliding groove.

[0015] Furthermore, the suction trolley has a suction chamber inside, which is connected to the interior of the sliding flue, and the connecting hose is connected to the suction chamber.

[0016] Furthermore, a sealing strip is provided at the top opening of the sliding flue for sealing, and multiple belt rollers are provided on the outer periphery of the suction trolley, with the sealing strip passing through the outer side of the suction trolley along the multiple belt rollers.

[0017] Beneficial effects: By setting exhaust ducts and smoke inlets on the pallet, and installing sliding exhaust ducts and suction trolleys on both sides of the pallet, the suction trolleys apply negative pressure to both ends of the pallet. With the exhaust ducts connected, the smoke inlets on the pallet are all in a negative pressure state. Since the smoke inlets are evenly distributed along the length of the pallet, the entire length of the pallet is in a negative pressure state, which can suck up the smoke generated during cutting and greatly reduce the escape rate of the smoke. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a plasma cutting machine for steel plate blanking according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a plasma cutting machine for steel plate blanking according to an embodiment of the present invention, in which the sliding cover is located inside the sliding groove; Figure 3 This is a schematic diagram of the structure of a pallet in a plasma cutting machine for steel plate blanking according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the suction trolley and the sliding cover in a plasma cutting machine for steel plate blanking according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the connection structure between the suction trolley and the sliding flue in a plasma cutting machine for steel plate blanking according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the connecting rod in a plasma cutting machine for steel plate cutting according to an embodiment of the present invention.

[0019] The components are as follows: 1. Track; 11. Gantry frame; 12. Cutting unit; 13. Support beam; 14. Connecting frame; 2. Pallet; 201. Exhaust duct; 202. Smoke inlet; 3. Sliding flue; 31. Sealing strip; 4. Suction trolley; 401. Suction chamber; 41. Belt roller; 5. Connecting plate; 501. Sliding groove; 6. Sliding cover; 7. Connecting hose; 8. Connecting rod; 81. Sliding tube; 82. Sliding rod; 83. Spring.

[0020] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0021] The technical solutions in 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, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0022] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0023] Combination Figure 1 As shown, an embodiment of the present invention provides a plasma cutting machine for steel plate blanking, including a track 1, a gantry frame 11, a cutting unit 12 and a pallet 2.

[0024] The track 1 has two parallel tracks, and the two ends of the gantry 11 are respectively connected to the two tracks 1. The cutting unit 12 is installed on the gantry 11, and the gantry 11 is configured to drive the cutting unit 12 to perform three-axis motion.

[0025] In a specific embodiment, a traveling mechanism is provided at both ends of the gantry frame 11 so that the gantry frame 11 can move along the length direction of the track 1 via the traveling mechanism; a translation mechanism is provided on the crossbeam of the gantry frame 11 so that the translation mechanism can move along the crossbeam of the gantry frame 11; a height adjustment mechanism is provided on the translation mechanism; and the cutting unit 12 is installed on the height adjustment mechanism so that the height adjustment mechanism can adjust the height of the cutting unit 12.

[0026] Furthermore, the walking mechanism, translation mechanism, and height adjustment mechanism are all controlled by an external controller. The external controller controls the movement path of the cutting unit 12 through a preset program, thereby cutting the workpiece.

[0027] It should be noted that the traveling mechanisms at both ends of the gantry 11 move synchronously to prevent the gantry 11 from tilting during movement.

[0028] Thus, during cutting, under the control of the external controller, the coordinated action of the walking mechanism, the translation mechanism and the height adjustment mechanism adjusts the position of the cutting unit 12 in three directions, enabling the cutting unit 12 to cut the workpiece according to the preset path.

[0029] Combination Figure 1 and Figure 2As shown, multiple pallets 2 are provided, all of which are set between two tracks 1 and are evenly distributed along the length of the tracks 1. The narrow side of the pallet 2 faces upward. Multiple pallets 2 form a grid that can support the workpiece. When cutting the workpiece, the molten metal particles can fall through the gap between the pallets 2, and the narrower side can reduce the area of ​​molten slag adhesion.

[0030] Combination Figure 3 As shown, the tray 2 has an exhaust duct 201 inside, and openings are provided at both ends. Multiple evenly distributed smoke holes 202 are provided on both sides of the tray 2 along the length direction, and the smoke holes 202 are connected to the exhaust duct 201. By applying negative pressure suction force at both ends of the tray 2, the smoke holes 202 on the tray 2 are all in a negative pressure state under the connection of the exhaust duct 201. Since the smoke holes 202 are evenly distributed along the length direction of the tray 2, the entire length area of ​​the tray 2 is in a negative pressure state.

[0031] Thus, during cutting, negative pressure suction is applied to both ends of the pallet 2. Under the action of the exhaust duct 201 and the smoke inlet 202, the entire length of the pallet 2 is under negative pressure, which can suck up the smoke generated during cutting and greatly reduce the escape rate of the smoke.

[0032] Combination Figure 1 , Figure 2 and Figure 4 As shown, two sliding flues 3 are provided on the inner side of the two tracks 1. The two sliding flues 3 are arranged parallel to the tracks 1, and each of the two sliding flues 3 is connected to a suction trolley 4. The input end of the two suction trolleys 4 is configured to be connected to both ends of the tray 2 respectively, and apply negative pressure suction force to both ends of the tray 2 so that negative pressure areas are formed on both sides of the tray 2 along the length direction, and the negative pressure areas are configured to correspond to the cutting unit 12.

[0033] It should be noted that the sliding flue 3 is connected to the external fan, and the suction trolley 4 can move along the sliding flue 3. When moving, the suction trolley 4 can maintain connection with the sliding flue 3 to maintain the negative pressure suction force on the tray 2.

[0034] In a specific embodiment, a connecting frame 14 is installed on the gantry frame 11, and one end of the connecting frame 14 is connected to the suction trolley 4 so that the gantry frame 11 can pull the suction trolley 4 to move through the connecting frame 14.

[0035] Furthermore, the gantry 11 is configured to drive the suction trolley 4 to move along the length of the track 1, so that the negative pressure area and the cutting unit 12 can move synchronously along the length of the track 1.

[0036] Thus, during cutting, the two suction trolleys 4 apply negative pressure suction to both ends of the tray 2, so that negative pressure areas are formed on both sides of the tray 2 along its length. At this time, the entire length of the tray 2 is under negative pressure, thereby sucking up the smoke generated during cutting and greatly reducing the escape rate of the smoke. At the same time, when the gantry 11 moves, it pulls the suction trolleys 4 to move synchronously, so that the suction trolleys 4 can always apply negative pressure suction to the tray 2 corresponding to the cutting unit 12. Accordingly, the tray 2 below the cutting unit 12 is always under negative pressure, maintaining the smoke extraction effect.

[0037] Combination Figure 1 , Figure 2 and Figure 4 As shown, two support beams 13 are provided on the inner side of the two sliding flues 3. A connecting plate 5 is fixed on each of the two support beams 13. The two ends of the support plate 2 are respectively connected to the two connecting plates 5, and the support beams 13 and the connecting plates 5 support the support plate 2.

[0038] Furthermore, a sliding groove 501 is provided on the side of the connecting plate 5 facing the suction trolley 4, the exhaust duct 201 is connected to the sliding groove 501, a sliding cover 6 slides in the sliding groove 501, and a connecting hose 7 is connected between the input end of the suction trolley 4 and the sliding cover 6.

[0039] It should be noted that the end of the pallet 2 does not extend into the sliding groove 501 to avoid affecting the sliding seal of the sliding cover 6. Under the action of the connecting plate 5, the gap between the ends of the pallet 2 is connected, and the sliding cover 6 can reduce pressure loss when it is suctioned.

[0040] At this time, the suction trolley 4 is connected to the end of the tray 2 through the sliding cover 6, and the sliding cover 6 is sealed and fitted with the sliding groove 501. When the sliding cover 6 slides, it can always maintain a seal and apply negative pressure suction to the end of the tray 2 in the area covered by the sliding cover 6.

[0041] The sliding cover 6 is configured to move synchronously with the suction trolley 4 so that the sliding cover 6 can always be connected to the end of the tray 2 in the corresponding area of ​​the cutting unit 12 and apply negative pressure suction force to it.

[0042] Thus, as the suction trolley 4 moves, the traction sliding cover 6 moves synchronously. The sliding cover 6 is always connected to the end of the tray 2 in the corresponding area of ​​the cutting unit 12. The suction trolley 4 applies negative pressure suction to the end of the tray 2 through the connecting hose 7 and the sliding cover 6.

[0043] In an optional embodiment, the length of the sliding cover 6 is sufficient to connect to at least 8-10 trays 2 simultaneously, so that the cutting unit 12 can form a sufficiently large negative pressure area to draw in the flue gas and reduce the escape rate of the flue gas.

[0044] Combination Figure 4 As shown, a sealing ring is provided on the side of the sliding cover 6 facing the support plate 2 to seal the gap between the sliding cover 6 and the sliding groove 501, thereby improving the sealing effect and preventing air leakage and pressure loss.

[0045] Combination Figure 4 and Figure 6 As shown, a connecting rod 8 is provided between the suction trolley 4 and the sliding cover 6 so that the suction trolley 4 can pull the sliding cover 6 to move via the connecting rod 8.

[0046] In a specific embodiment, the connecting rod 8 includes a sliding tube 81 and a sliding rod 82 that are slidably connected to each other. The sliding tube 81 is connected to the sliding cover 6, and the sliding rod 82 is connected to the suction cart 4. The sliding tube 81 and the sliding rod 82 can slide relative to each other to adapt to the change in the distance between the suction cart 4 and the sliding cover 6. The connecting rod 8 also includes a spring 83, the two ends of which are connected to the suction trolley 4 and the sliding cover 6 respectively. The spring 83 is configured to apply an elastic thrust to the sliding cover 6 so that the sliding cover 6 can be tightly attached to the inner wall of the sliding groove 501.

[0047] Thus, under the action of the connecting rod 8, the suction trolley 4 and the sliding cover 6 can slide synchronously. When the distance between the sliding cover 6 and the suction trolley 4 changes due to equipment vibration, the sliding tube 81 and the sliding rod 82 can slide relative to each other, avoiding damage to the equipment caused by hard connection. At the same time, under the action of the spring 83, the sliding cover 6 can stick tightly to the inner wall of the sliding groove 501 during the sliding process, maintain the seal, and avoid air leakage and pressure loss.

[0048] Combination Figure 5 As shown, the suction trolley 4 has a suction chamber 401 inside. The bottom of the suction chamber 401 has an opening, and the top of the sliding flue 3 has an opening. The suction chamber 401 and the sliding flue 3 are connected through the opening. The connecting hose 7 is connected to the suction chamber 401. The flue gas enters the exhaust duct 201 through the smoke inlet 202, and then enters the sliding flue 3 in sequence along the sliding cover 6, the connecting hose 7 and the suction chamber 401, and then is discharged.

[0049] In a specific embodiment, a sealing strip 31 for sealing is provided at the top opening of the sliding flue 3, and multiple belt rollers 41 are provided on the outer periphery of the suction trolley 4. The sealing strip 31 passes through the outer side of the suction trolley 4 along the multiple belt rollers 41.

[0050] At this time, the opening of the sliding flue 3 outside the suction trolley 4 is sealed by the sealing strip 31. When the suction trolley 4 moves, the sealing strip 31 passes through the outside of the suction trolley 4 along multiple belt rollers 41, maintaining the communication between the suction chamber 401 and the sliding flue 3 (e.g., Figure 5 (As shown).

[0051] The working principle of this invention is as follows: During cutting, two suction trolleys 4 apply negative pressure suction to both ends of the tray 2 through connecting hoses 7 and sliding covers 6. With the exhaust duct 201 connected, the smoke holes 202 on the tray 2 are all in a negative pressure state. Since the smoke holes 202 are evenly distributed along the length of the tray 2, the entire length of the tray 2 is in a negative pressure state, thereby sucking up the smoke generated during cutting and greatly reducing the escape rate of the smoke. At the same time, when the gantry 11 moves, the suction trolleys 4 are moved synchronously through the connecting frame 14. The suction trolleys 4 pull the sliding covers 6 through the connecting rod 8, so that the sliding covers 6 can always be connected to the end of the tray 2 in the corresponding area of ​​the cutting unit 12 and apply negative pressure suction. Correspondingly, the tray 2 below the cutting unit 12 is always in a negative pressure state, maintaining the smoke extraction effect.

[0052] In summary, by setting a flue 201 and a smoke inlet 202 on the pallet 2, and setting a sliding flue 3 and a suction trolley 4 on both sides of the pallet 2, the suction trolley 4 applies negative pressure suction to both ends of the pallet 2. With the flue 201 connected, the smoke inlets 202 on the pallet 2 are all in a negative pressure state. Since the smoke inlets 202 are evenly distributed along the length of the pallet 2, the entire length of the pallet 2 is in a negative pressure state, which can suck up the smoke generated by cutting and greatly reduce the escape rate of the smoke.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A plasma cutting machine for steel plate blanking, characterized in that, include: Track (1), which has two parallel tracks; A gantry frame (11) is installed on the track (1); A cutting unit (12) is mounted on the gantry (11), which is configured to drive the cutting unit (12) to perform three-axis motion. Multiple trays (2) are arranged between two tracks (1) and are evenly distributed along the length of the tracks (1). The tray (2) has a smoke exhaust duct (201) inside and openings at both ends. Multiple smoke holes (202) are evenly distributed along the length of both sides of the tray (2), and the smoke holes (202) are connected to the smoke exhaust duct (201). Two sliding flues (3) are respectively set inside the two tracks (1), and each of the two sliding flues (3) is connected to a suction trolley (4). The input ends of the two suction trolleys (4) are configured to be connected to the two ends of the tray (2) respectively, so that the tray (2) forms a negative pressure area on both sides along the length direction, and the negative pressure area is configured to correspond to the cutting unit (12). The gantry (11) is configured to drive the suction trolley (4) to move along the length of the track (1), so that the negative pressure area and the cutting unit (12) can move synchronously along the length of the track (1).

2. The plasma cutting machine for steel plate blanking according to claim 1, characterized in that: Two support beams (13) are provided on the inner side of the two sliding flues (3), and a connecting plate (5) is fixed on each of the two support beams (13). The two ends of the support plate (2) are respectively connected to the two connecting plates (5).

3. The plasma cutting machine for steel plate blanking according to claim 2, characterized in that: The connecting plate (5) is provided with a sliding groove (501) on the side facing the suction trolley (4). The exhaust duct (201) is connected to the sliding groove (501). A sliding cover (6) slides in the sliding groove (501). A connecting hose (7) is connected between the input end of the suction trolley (4) and the sliding cover (6). The sliding cover (6) is configured to move synchronously with the suction trolley (4) so ​​that the sliding cover (6) can always be connected to the end of the tray (2) in the corresponding area of ​​the cutting unit (12).

4. The plasma cutting machine for steel plate blanking according to claim 3, characterized in that: The length of the sliding cover (6) is sufficient to connect to at least 8-10 of the trays (2) simultaneously.

5. The plasma cutting machine for steel plate blanking according to claim 3, characterized in that: A sealing ring is provided on the side of the sliding cover (6) facing the tray (2).

6. The plasma cutting machine for steel plate blanking according to claim 1, characterized in that: A connecting frame (14) is installed on the gantry (11), one end of which is connected to the suction trolley (4) so ​​that the gantry (11) can pull the suction trolley (4) to move through the connecting frame (14).

7. The plasma cutting machine for steel plate blanking according to claim 3, characterized in that: A connecting rod (8) is provided between the suction trolley (4) and the sliding cover (6) so that the suction trolley (4) can pull the sliding cover (6) to move through the connecting rod (8).

8. The plasma cutting machine for steel plate blanking according to claim 7, characterized in that: The connecting rod (8) includes a sliding tube (81) and a sliding rod (82) that are slidably connected to each other. The sliding tube (81) is connected to the sliding cover (6), and the sliding rod (82) is connected to the suction trolley (4). The connecting rod (8) also includes a spring (83), the two ends of which are connected to the suction trolley (4) and the sliding cover (6) respectively. The spring (83) is configured to apply an elastic thrust to the sliding cover (6) so that the sliding cover (6) can be tightly attached to the inner wall of the sliding groove (501).

9. The plasma cutting machine for steel plate blanking according to claim 1, characterized in that: The suction trolley (4) is provided with a suction chamber (401) inside, which is connected to the inside of the sliding flue (3), and the connecting hose (7) is connected to the suction chamber (401).

10. The plasma cutting machine for steel plate blanking according to claim 9, characterized in that: The top opening of the sliding flue (3) is provided with a sealing strip (31) for sealing, and a plurality of belt rollers (41) are provided on the outer periphery of the suction trolley (4). The sealing strip (31) passes through the outer side of the suction trolley (4) along the plurality of belt rollers (41).

Images