A material pressing device of a laser pipe cutting machine

Abstract

The utility model discloses a kind of pressing device of laser pipe cutting machine, comprising: base, its top two sides are evenly provided with support plate, the top of two support plates is fixedly connected with same top plate;Support roller, it is multiple groups, and array distribution is set, each group contains two support rollers, support roller is rotatably installed at the top of base, support roller is used to support stainless steel tube at bottom;Mounting plate, it is set above multiple support rollers, and slidingly installed between two support plates.The utility model is set through a series of structures, can control pressure pressing to stainless steel tube, can effectively reduce the condition that stainless steel tube is deformed due to the fact that pressure solid force is larger, and stainless steel tube can be directly limited to lock when subsequent polishing operation is needed, then when polishing operation, personnel need not be moved to specially locked device to carry out locking operation, improve use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of laser tube cutting machine technology, and in particular to a pressing device for a laser tube cutting machine. Background Technology

[0002] The function of a laser tube cutting machine is to cut long stainless steel tubes into shorter stainless steel tubes of different specifications. Existing laser tube cutting machines use a circular chuck to clamp the stainless steel tubes. The stainless steel tubes are placed along the central axis of the circular chuck and held and positioned at the center of the chuck by the jaws. The end of the stainless steel tube closest to the laser cutting head extends to the outside of the circular chuck. During cutting, the circular chuck rotates along its horizontal axis while the stainless steel tube rotates synchronously, and the laser cutting head cuts simultaneously. The stainless steel tube rotates 360° to complete one cut. However, due to the large size of the circular chuck, only one stainless steel tube can be clamped on a single chuck, making it difficult to set up multiple stations for simultaneous cutting during production. Furthermore, because only one end of the stainless steel tube is clamped, the laser cutting head can only cut that end, resulting in waste of raw materials as the clamped portion of the tube remains uncut. To solve these problems, after searching, [the following information is provided in the original text]. CN220407502U discloses a pressing device for a laser tube cutting machine, applied in the field of laser tube cutting machine technology. It addresses the problems of large equipment size, difficulty in setting up multiple workstations, and material waste during the cutting process. The key technical points are: it includes a pressure roller base, a roller assembly, and a rubber roller assembly. A pressure roller plate slides vertically along the side of the pressure roller base. The rubber roller assembly is located on the side of the pressure roller plate near the stainless steel tube. The roller assembly is located below the rubber roller assembly. The rubber roller assembly includes two sets of rubber rollers rotating along a horizontal axis, and the roller assembly includes two sets of rollers rotating along a horizontal axis. The two sets of rollers are arranged side-by-side along the radial direction of the stainless steel tube. The stainless steel tube is positioned between the rubber roller assembly and the roller assembly. The rotation of the rubber rollers simultaneously drives the stainless steel tube and the rollers to rotate passively. The vertical distance between the rubber roller assembly and the roller assembly is adjustable. The technical effects are reduced equipment size, elimination of material clamping, and reduced material waste.

[0003] The pressing device of the laser tube cutting machine disclosed in the above patent still has the following shortcomings in use: 1. There is no pressure control structure during the pressing process of the rubber roller moving down, which poses a risk of deformation of the stainless steel tube due to excessive downward pressure; 2. The pressing method of the rotatable rubber roller lacks a locking structure for the stainless steel tube after cutting. Therefore, when grinding after cutting, the cut stainless steel tube needs to be moved to a special locking device for grinding, which results in low flexibility. In view of the above, this application proposes a pressing device for a laser tube cutting machine. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressing device for a laser tube cutting machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressing device for a laser tube cutting machine includes:

[0007] The base has support plates installed on both sides of its top, and the top of the two support plates is fixedly connected to the same top plate.

[0008] The support rollers are in multiple sets and arranged in an array. Each set contains two support rollers. The support rollers are rotatably mounted on the top of the base and are used to support the stainless steel tube at the bottom.

[0009] The mounting plate is positioned above multiple support rollers and is slidably mounted between two support plates;

[0010] A pressure-controlled drive mechanism is installed on top of the mounting plate and between the top plate and the two support plates. The pressure-controlled drive mechanism is used to drive the mounting plate vertically.

[0011] The pressing mechanism consists of two sets, both installed at the bottom of the mounting plate. The pressing mechanism is used to press the stainless steel pipe.

[0012] The pressure-controlled locking mechanism consists of two sets, both mounted on the pressure-controlled drive mechanism, with the pressing mechanism sleeved on the corresponding pressure-controlled locking mechanism.

[0013] The PLC controller is fixedly connected to the top left side of the top plate. The PLC controller is electrically connected to the pressure control drive mechanism and the pressure control locking mechanism.

[0014] Preferably, the pressure control drive mechanism includes a movable plate, which is disposed above the mounting plate and slidably mounted between two support plates. A first pressure sensor is fixedly mounted on the bottom of the movable plate, and the bottom of the detection end of the first pressure sensor is fixedly connected to the top of the mounting plate. The first pressure sensor is used to detect the extrusion pressure during detection. Multi-stage electric telescopic rods are embedded and fixed on both sides of the bottom of the top plate. The bottom end of the output shaft of the multi-stage electric telescopic rod is fixedly connected to the top of the movable plate. The multi-stage electric telescopic rods are used to drive the movable plate to move vertically. The first pressure sensor and the two multi-stage electric telescopic rods are electrically connected to the PLC controller. The first pressure sensor receives the signal from the first pressure sensor to control the multi-stage electric telescopic rods. The control principle is existing technology and will not be described in detail here.

[0015] Preferably, the pressing mechanism includes two pressing rollers, which are used to press the stainless steel pipe. Two U-shaped rods are fixedly connected to both sides of the bottom of the mounting plate. The pressing rollers are rotatably installed between the inner walls of the front and rear sides of the corresponding U-shaped rods. A brake motor is fixedly connected to the rear side of the U-shaped rod. The front end of the output shaft of the brake motor is fixedly connected to the rear end of the corresponding pressing roller. The brake motor is used to drive the corresponding pressing roller.

[0016] Preferably, the pressure-controlled locking mechanism includes two pressing blocks. The bottom of the pressing blocks is designed with an arc shape and is bonded with anti-slip rubber. The pressing blocks are located above the corresponding pressing rollers. A positioning rod is fixedly connected to the top of the pressing blocks. Two moving rods are provided above the mounting plate. The bottom of the moving rods is fixedly connected to the top of the corresponding two positioning rods. The mounting plate is slidably sleeved on the four positioning rods. The positioning rods provide vertical guidance for the corresponding pressing blocks. A U-shaped rod is slidably sleeved on the corresponding positioning rod. Two first electric telescopic rods are embedded and fixedly fixed at the bottom of the moving plate. A second pressure sensor is fixedly connected to the bottom of the output shaft of the first electric telescopic rod. The bottom of the detection end of the second pressure sensor is fixedly connected to the top of the corresponding moving rod. The second pressure sensor is used to detect the extrusion pressure. The two second pressure sensors and the two first electric telescopic rods are electrically connected to the PLC controller. The PLC controller receives the signal from the second pressure sensor to control the first electric telescopic rods. The control principle is existing technology and will not be described in detail here. The top plate is sleeved on the two first electric telescopic rods.

[0017] Preferably, sliders are fixedly connected to both sides of the movable plate and both sides of the mounting plate. T-shaped slide rails are fixedly connected to the sides of the two support plates that are close to each other. T-shaped slide grooves are opened on the sides of the two sliders that are far apart from each other. The T-shaped slide grooves are slidably connected to the corresponding T-shaped slide rails. The sliders and the corresponding T-shaped slide rails cooperate to provide vertical guidance for the mounting plate and the movable plate. A second synchronous control switch is fixedly and electrically connected to the front side of the multi-stage electric telescopic rod on the left side. The second synchronous control switch is electrically connected to the two multi-stage electric telescopic rods and the PLC controller. The second synchronous control switch is used to control the two multi-stage electric telescopic rods to open synchronously.

[0018] Preferably, the top plate has clearance holes on both sides, the first electric telescopic rod is located in the corresponding clearance hole and does not contact the inner wall of the clearance hole, and the front side of the first electric telescopic rod is fixedly connected to a first synchronous control switch, which is electrically connected to the two first electric telescopic rods and the PLC controller.

[0019] Preferably, the support plate is welded and fixed to the top of the base, and an anti-slip pad is glued and fixed to the bottom of the base.

[0020] Preferably, the support plate is detachably fixed to the top of the base, and two positioning blocks are fixedly connected to the bottom of the support plate. The base is movably fitted onto the four positioning blocks. Threaded grooves are opened on the side of the two positioning blocks that are far apart from each other. T-shaped fixing bolts are threaded in the threaded grooves. The base is threaded onto the four T-shaped fixing bolts. Two lockable universal wheels are rotatably installed on both sides of the bottom of the base.

[0021] Compared with existing technologies, the beneficial effects of this utility model are:

[0022] 1. By cooperating with the pressure control drive mechanism, PLC controller and pressing mechanism, stainless steel pipes can be pressed under controlled pressure. By using the pressure control pressing method, the deformation of stainless steel pipes caused by large pressing force can be effectively reduced.

[0023] 2. By setting up a pressure-controlled locking mechanism, the pressure roller can be directly pressed and locked when grinding is required, thereby directly restricting and locking the stainless steel pipe. As a result, during the grinding operation, personnel do not need to move to a special locking device to perform the locking operation, improving the flexibility of use.

[0024] 3. Through another setting, the base can be disassembled and replaced as needed, so that a base structure with locking casters can be flexibly moved according to the on-site application scenario, improving the flexibility of use and making it applicable to different application scenarios;

[0025] This utility model, through a series of structural designs, can control the pressure of stainless steel pipes, effectively reducing the deformation of stainless steel pipes caused by excessive pressure. Furthermore, it can directly restrict and lock the stainless steel pipes during subsequent grinding operations, eliminating the need for personnel to move to a dedicated locking device for the locking operation, thus improving the flexibility of use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the material pressing device of a laser tube cutting machine according to Embodiment 1 of this utility model;

[0027] Figure 2 This is a schematic diagram of the front cross-sectional view of the pressing device of a laser tube cutting machine according to Embodiment 1 of this utility model;

[0028] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0029] Figure 4 This is a schematic diagram of the main cross-sectional view of the pressing device of a laser tube cutting machine according to Embodiment 2 of this utility model;

[0030] Figure 5This is a cross-sectional view of the base of the pressing device of a laser tube cutting machine according to Embodiment 2 of this utility model, in which a locking universal wheel is installed at the bottom of the base.

[0031] In the diagram: 1. Base; 2. Top plate; 3. Support plate; 4. Pressure control drive mechanism; 401. Moving plate; 402. Multi-stage electric telescopic rod; 403. First pressure sensor; 5. PLC controller; 6. Pressure control locking mechanism; 601. First electric telescopic rod; 602. Second pressure sensor; 603. Moving rod; 604. Pressing block; 605. Positioning rod; 7. Mounting plate; 8. Pressure roller; 9. U-shaped rod; 10. Support roller; 11. T-shaped slide rail; 12. Slider; 13. Positioning block; 14. T-shaped fixing bolt. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Example 1

[0034] Reference Figure 1-3 A pressing device for a laser tube cutting machine, comprising:

[0035] The base 1 has support plates 3 welded and fixed on both sides of its top. Anti-slip pads are glued and fixed to the bottom of the base 1. The top of the two support plates 3 is fixedly connected to the same top plate 2.

[0036] The support rollers 10 are in multiple groups and arranged in an array. Each group contains two support rollers 10. The support rollers 10 are rotatably mounted on the top of the base 1. Multiple U-shaped seats are fixedly connected to the top of the base 1. Pins are fixedly connected to the front and rear ends of the support rollers 10. Circular holes are opened on the front and rear inner walls of the U-shaped seats. A first bearing is fixedly fitted in the circular hole. The inner side of the inner ring of the first bearing is fixedly connected to the outer side of the corresponding pin. The first bearing and the pin cooperate to provide a rotatable mounting function for the support rollers 10. The first support rollers 10 are used to support the stainless steel pipe at the bottom.

[0037] Mounting plate 7 is positioned above multiple support rollers 10 and is slidably mounted between two support plates 3;

[0038] The PLC controller 5 is fixedly connected to the top left side of the top plate 2;

[0039] A pressure control drive mechanism 4 is installed on top of the mounting plate 7 and between the top plate 2 and the two support plates 3. The pressure control drive mechanism 4 includes a movable plate 401, which is positioned above the mounting plate 7 and slidably installed between the two support plates 3. Slider blocks 12 are fixedly connected to both sides of the movable plate 401 and both sides of the mounting plate 7. T-shaped slide rails 11 are fixedly connected to the sides of the two support plates 3 that are close to each other. T-shaped grooves are formed on the sides of the two opposing sliders 12 that are far apart from each other. The T-shaped grooves are slidably connected to the corresponding T-shaped slide rails 11. The sliders 12 and the corresponding T-shaped slide rails 11 cooperate to provide vertical guidance for the mounting plate 7 and the movable plate 401. A first pressure sensor 403 is fixedly installed at the bottom of the movable plate 401. A connecting block is fixedly connected to the bottom of the movable plate 401, and the bottom of the connecting block is fixedly connected to the top of the first pressure sensor 403. The connection between the movable plate 401 and the first pressure sensor 403 is achieved through the connecting block. The bottom of the detection end of the sensor 403 is fixedly connected to the top of the mounting plate 7. The first pressure sensor 403 is used to detect the extrusion pressure during detection. Multi-stage electric telescopic rods 402 are embedded and fixed on both sides of the bottom of the top plate 2. The front side of the multi-stage electric telescopic rod 402 on the left side is fixed and electrically connected to a second synchronous control switch. The second synchronous control switch is electrically connected to the two multi-stage electric telescopic rods 402 and the PLC controller 5. The second synchronous control switch is used to control the two multi-stage electric telescopic rods 402 to open synchronously. The bottom end of the output shaft of the multi-stage electric telescopic rod 402 is fixedly connected to the top of the moving plate 401. The multi-stage electric telescopic rod 402 is used to drive the moving plate 401 to move vertically. The first pressure sensor 403 and the two multi-stage electric telescopic rods 402 are all electrically connected to the PLC controller 5. The first pressure sensor 403 receives the signal from the first pressure sensor 403 to control the multi-stage electric telescopic rod 402. Its control principle is existing technology and will not be described in detail here.

[0040] The pressing mechanism consists of two sets, both installed at the bottom of the mounting plate 7. Each pressing mechanism includes two pressing rollers 8, which are used to press the stainless steel pipe. Two U-shaped rods 9 are fixedly connected to both sides of the bottom of the mounting plate 7. The pressing rollers 8 are rotatably mounted between the front and rear inner walls of the corresponding U-shaped rods 9. Bearing holes are provided on both the front and rear inner walls of the U-shaped rods 9, and second bearings are fixedly fitted into these holes. Connecting shafts are fixedly connected to the front and rear ends of the pressing rollers 8. The outer side of the connecting shaft is fixedly connected to the inner side of the inner ring of the corresponding second bearing. The second bearing and the connecting shaft cooperate to allow the pressing rollers 8 to rotate. A brake motor is fixedly connected to the rear side of the U-shaped rods 9. The front end of the output shaft of the brake motor is fixedly connected to the rear end of the corresponding pressing roller 8 via the connecting shaft. The brake motor drives the corresponding pressing roller 8.

[0041] In this implementation scheme: The stainless steel pipe to be cut is placed between the corresponding multiple support rollers 10. Then, the second synchronous control switch controls the simultaneous opening of two multi-stage electric telescopic rods 402. The two multi-stage electric telescopic rods 402 simultaneously drive the moving plate 401 downwards. The moving plate 401, via the first pressure sensor 403, drives the mounting plate 7 downwards. The mounting plate 7, via multiple U-shaped rods 9, drives multiple pressure rollers 8 downwards until it contacts the corresponding stainless steel pipe. At this point, the continuing downward movement of the moving plate 401, driven by the first pressure sensor 403, compresses the mounting plate 7. 7. Multiple U-shaped rods 9 drive multiple pressure rollers 8 to press down on the corresponding stainless steel pipe. At the same time, the first pressure sensor 403 detects the pressing force and converts the detected pressure value into an electrical signal through digital-to-analog conversion. The electrical signal is then transmitted to the PLC controller 5. The PLC controller 5 converts the received standard electrical signal into an actual pressure value through analog-to-digital conversion. When the pressing force is detected to reach the preset value, the PLC controller 5 controls the two multi-stage electric telescopic rods 402 to close synchronously through the second synchronous control switch. At this time, multiple pressure rollers 8 cooperate with multiple support rollers 10 to press and solidify the stainless steel pipe.

[0042] It should be noted that: the multi-stage electric telescopic rod 402 can preferably be an electric actuator produced by Hangzhou Jiepai Transmission Technology Co., Ltd., the first pressure sensor 403 can preferably be a pressure sensor from the Chenzhu series, and the PLC controller 5 can preferably be an S7-1200 series controller. The specific control principle is as follows: the first pressure sensor 403 detects the compressive force it receives in real time, converting this physical quantity (pressure) into an analog electrical signal. The PLC controller 5 continuously reads the electrical signal transmitted by the first pressure sensor 403 through its analog input module. The internal program of the PLC controller 5 compares this real-time detection value with the preset pressure value. When the real-time detection value < the preset value, the PLC controller 5 continues to control the multi-stage electric telescopic rod 402 to move downward. When the real-time detection value >= the preset value, the PLC controller 5 immediately cuts off the power supply to the multi-stage electric telescopic rod 402 through the second synchronous control switch, causing it to stop moving. The multi-stage electric telescopic rod 402 has a self-locking function, maintaining its current position after stopping, thereby maintaining the pressure at the preset value and completing the "pressure control and compaction" of the steel pipe. The specific control principle is existing technology and will not be elaborated on here.

[0043] Furthermore:

[0044] A pressing device for a laser tube cutting machine further includes a pressure-controlling and locking mechanism 6, which consists of two sets. The pressure-controlling and locking mechanism 6 includes two pressing blocks 604. The bottom of the pressing block 604 is designed with an arc-shaped structure and is bonded with anti-slip rubber. The pressing block 604 is located above the corresponding pressing roller 8. The top of the pressing block 604 is fixedly connected to a positioning rod 605. Two moving rods 603 are provided above the mounting plate 7. The bottom of the moving rods 603 is fixedly connected to the top of the corresponding two positioning rods 605. The mounting plate 7 is slidably sleeved on the four positioning rods 605. The positioning rods 605 provide a vertical guiding effect for the corresponding pressing blocks 604. U-shaped rods 9 are slidably sleeved on the corresponding positioning rods 605. The top of the mounting plate 7 has four first positioning holes, and the top of the U-shaped rod 9 has a second positioning hole. The inner walls of the first positioning holes and the inner walls of the second positioning holes are in sliding contact with the outer side of the corresponding positioning rods 605. Two first electric telescopic rods are embedded and fixed at the bottom of the moving plate 401. 601. A top plate 2 is fitted onto two first electric telescopic rods 601. Both sides of the top of the top plate 2 have clearance holes. The first electric telescopic rods 601 are located within the corresponding clearance holes and do not contact the inner walls of the clearance holes. A first synchronous control switch is fixedly connected to the front side of each first electric telescopic rod 601. The first synchronous control switch is electrically connected to the two first electric telescopic rods 601 and the PLC controller 5. A second pressure sensor 602 is fixedly connected to the bottom end of the output shaft of each first electric telescopic rod 601. The bottom of the detection end of the second pressure sensor 602 is fixedly connected to the top of the corresponding moving rod 603. The second pressure sensor 602 is used to detect the extrusion pressure. Both second pressure sensors 602 and the two first electric telescopic rods 601 are electrically connected to the PLC controller 5. The PLC controller 5 receives signals from the second pressure sensors 602 to control the first electric telescopic rods 601. The control principle is existing technology and will not be elaborated further here.

[0045] In this implementation scheme: when it is necessary to lock the stainless steel pipe, the two first electric telescopic rods 601 can be opened synchronously by controlling the first synchronous control switch. The output shaft of the first electric telescopic rod 601 is squeezed by the corresponding second pressure sensor 602 to drive the moving rod 603 to move downward. The moving rod 603 drives the two pressing blocks 604 to move downward through the corresponding two positioning rods 605. The pressing blocks 604 drive the corresponding anti-slip rubber to move downward to press the pressure roller 8. The pressing force can restrict the pressure roller 8 and prevent it from rotating, thereby preventing the stainless steel pipe in contact with the pressure roller 8 from rotating. At the same time, the second pressure sensor 602 detects the extrusion pressure and converts the detected pressure value into an electrical signal through digital-analog conversion, and transmits the electrical signal to the PLC controller 5. When the extrusion pressure is detected to reach the preset value, the PLC controller 5 controls the two first electric telescopic rods 601 to close through the first synchronous control switch.

[0046] It should be noted that the first electric telescopic rod 601 and the second pressure sensor 602 can both preferably be products of the same series as the multi-stage electric telescopic rod 402 and the first pressure sensor 403. Their control principle is the same as the control principle of the multi-stage electric telescopic rod 402, the first pressure sensor 403 and the PLC controller 5 mentioned above, and will not be described separately here.

[0047] In terms of power supply, the mains power is connected to the power input interface of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules (not marked in the figure) and flexible wires to form a complete power supply circuit. Since the first electric telescopic rod 601 and the second pressure sensor 602 are both moving parts, the flexible wires (not marked in the figure) they are connected to adopt a conventional wiring method with a suitable bending length to meet their displacement requirements. This power supply scheme is a conventional power distribution method for industrial equipment and a mature and well-known technical means, so it will not be described in detail here.

[0048] Working principle: In use, the pressure values ​​for closing the multi-stage electric telescopic rod 402 and the first electric telescopic rod 601 are preset via PLC controller 5. The stainless steel pipe to be cut is placed between the corresponding support rollers 10. Then, the two multi-stage electric telescopic rods 402 are opened synchronously via the second synchronous control switch. The two multi-stage electric telescopic rods 402 simultaneously drive the moving plate 401 to move downward. The moving plate 401 drives the mounting plate 7 to move downward via the first pressure sensor 403. The mounting plate 7 drives the multiple pressure rollers 8 to move downward via multiple U-shaped rods 9. When the pressure rollers 8 move downward to contact the corresponding stainless steel pipe, the moving plate 401, which continues to move downward, drives the first pressure sensor 403 to press against the mounting plate 7. The extrusion process involves the mounting plate 7 driving multiple pressure rollers 8 downwards via multiple U-shaped rods 9 to extrude the corresponding stainless steel tube. Simultaneously, the first pressure sensor 403 detects the extrusion force and converts the detected pressure value into an electrical signal via digital-to-analog conversion. This electrical signal is then transmitted to the PLC controller 5. The PLC controller 5 converts the received standard electrical signal into an actual pressure value via analog-to-digital conversion. When the extrusion force reaches a preset value, the PLC controller 5 controls the two multi-stage electric telescopic rods 402 to close synchronously via the second synchronous control switch. At this time, the multiple pressure rollers 8, in conjunction with multiple support rollers 10, press and solidify the stainless steel tube. By controlling the pressure and solidifying the tube, the deformation of the stainless steel tube due to excessive pressing force can be effectively reduced, thus improving the stability of the solidification process.

[0049] After pressing, the brake motor can be turned on during cutting. The output shaft of the brake motor drives the corresponding pressure roller 8 to rotate. While the pressure roller 8 rotates, it drives the corresponding stainless steel tube to rotate, and the cutting operation can be carried out.

[0050] After cutting, when grinding the cut surface is required, the stainless steel pipe needs to be locked. This can be achieved by controlling the two first electric telescopic rods 601 to open synchronously via the first synchronous control switch. The output shaft of the first electric telescopic rod 601, through the corresponding second pressure sensor 602, pushes and drives the moving rod 603 downward. The moving rod 603, through the corresponding two positioning rods 605, drives the two pressing blocks 604 downward. The pressing blocks 604 drive the corresponding anti-slip rubber to move downward, pressing and securing the pressure roller 8. The pressing force can restrict the pressure roller 8 and prevent it from rotating, thereby preventing the stainless steel pipe in contact with the pressure roller 8 from rotating. The second pressure sensor 602... During the downward movement of the corresponding moving rod 603, the second pressure sensor 602 detects the extrusion force and converts the detected pressure value into an electrical signal via digital-to-analog conversion. The electrical signal is then transmitted to the PLC controller 5. The PLC controller 5 converts the received standard electrical signal into an actual pressure value via analog-to-digital conversion. When the extrusion force reaches the preset value, the PLC controller 5 controls the two first electric telescopic rods 601 to close via the first synchronous control switch. By directly pressing and securing the pressure roller 8, the stainless steel pipe can be directly locked and secured. Therefore, during the grinding operation, it is not necessary for personnel to move to a special locking device for locking operations, thus improving the flexibility of use.

[0051] Example 2

[0052] Reference Figure 4-5 This embodiment is based on Embodiment 1, but differs from Embodiment 1 in that the support plate 3 is detachably fixed to the top of the base 1.

[0053] The bottom of the support plate 3 is fixedly connected to two positioning blocks 13. The base 1 is movably fitted onto the four positioning blocks 13. The top of the base 1 has four positioning grooves. The inner wall of the positioning groove is in movable contact with the outer side of the corresponding positioning block 13. The two opposite positioning blocks 13 on the left and right sides are provided with threaded grooves. T-shaped fixing bolts 14 are threaded into the threaded grooves. The base 1 is threaded onto the four T-shaped fixing bolts 14. The inner wall of the two opposite positioning grooves on the left and right sides is provided with bolt holes. The bolt holes are threadedly connected to the corresponding T-shaped fixing bolts 14. The T-shaped fixing bolts 14 and the positioning blocks 13 are connected by a threaded connection, which facilitates the disassembly of the base 1. Two locking casters are rotatably installed on both sides of the bottom of the base 1.

[0054] The usage method of this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: When the entire device needs to be moved frequently during use, the base 1 with locking casters at the bottom can be replaced. During replacement, the T-shaped fixing bolt 14 can be rotated in the reverse direction. As the T-shaped fixing bolt 14 rotates, it separates from the corresponding threaded groove, releasing the fixing of the positioning block 13. At this time, the two support plates 3 can be moved upwards, respectively driving the corresponding positioning blocks 13 upwards and separating them from the base 1, allowing the base 1 to be moved away. The base 1 with locking casters is then placed below the two support plates 3. Next, the two support plates 3 are moved downwards, driving the corresponding positioning blocks 13 downwards into the base 1. Then, the T-shaped fixing bolt 14 is rotated in the forward direction to move into the corresponding threaded groove, thus achieving a fixed connection between the positioning block 13 and the base 1, completing the replacement. When the entire device needs to be used stably without moving for a long time, the base 1 with anti-slip pads can be replaced. This replaceable method allows for flexible replacement of the base 1 structure with locking casters according to the application scenario, improving usage flexibility.

[0055] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A pressing device for a laser tube cutting machine, comprising a base (1), characterized in that, include: The base (1) has support plates (3) installed on both sides of its top, and the top of the two support plates (3) is fixedly connected to the same top plate (2). Support rollers (10) are in multiple groups and arranged in an array. Each group contains two support rollers (10). The support rollers (10) are rotatably mounted on the top of the base (1). Mounting plate (7) is positioned above multiple support rollers (10) and is slidably mounted between two support plates (3); The pressure control drive mechanism (4) is installed on the top of the mounting plate (7) and between the top plate (2) and the two support plates (3); The pressing mechanism consists of two sets, both installed at the bottom of the mounting plate (7); The pressure-controlled locking mechanism (6) consists of two sets, both of which are installed on the pressure-controlled drive mechanism (4), and the pressing mechanism is sleeved on the corresponding pressure-controlled locking mechanism (6); The PLC controller (5) is fixedly connected to the top left side of the top plate (2). The PLC controller (5) is electrically connected to the pressure control drive mechanism (4) and the pressure control locking mechanism (6).

2. The pressing device of a laser tube cutting machine according to claim 1, characterized in that, The pressure control drive mechanism (4) includes a movable plate (401), which is set above the mounting plate (7) and slidably installed between two support plates (3). A first pressure sensor (403) is fixedly installed at the bottom of the movable plate (401). The bottom of the detection end of the first pressure sensor (403) is fixedly connected to the top of the mounting plate (7). Multi-stage electric telescopic rods (402) are embedded and fixed on both sides of the bottom of the top plate (2). The bottom end of the output shaft of the multi-stage electric telescopic rod (402) is fixedly connected to the top of the movable plate (401). The first pressure sensor (403) and the two multi-stage electric telescopic rods (402) are electrically connected to the PLC controller (5).

3. The pressing device of a laser tube cutting machine according to claim 1, characterized in that, The pressing mechanism includes two pressing rollers (8). Two U-shaped rods (9) are fixedly connected to both sides of the bottom of the mounting plate (7). The pressing rollers (8) are rotatably installed between the inner walls of the front and rear sides of the corresponding U-shaped rods (9). A brake motor is fixedly connected to the rear side of the U-shaped rods (9). The front end of the output shaft of the brake motor is fixedly connected to the rear end of the corresponding pressing rollers (8).

4. The pressing device of a laser tube cutting machine according to claim 3, characterized in that, The pressure-controlled locking mechanism (6) includes two pressure blocks (604). The bottom of the pressure block (604) is set as an arc structure and is glued and fixed with anti-slip rubber. The pressure block (604) is located above the corresponding pressure roller (8). The top of the pressure block (604) is fixedly connected with a positioning rod (605). Two moving rods (603) are provided above the mounting plate (7). The bottom of the moving rod (603) is fixedly connected to the top of the corresponding two positioning rods (605). The mounting plate (7) is slidably sleeved on the four positioning rods (605). The U-shaped rod (9) is slidably sleeved on the four positioning rods (605). On the corresponding positioning rod (605), two first electric telescopic rods (601) are embedded and fixed at the bottom of the moving plate (401). The bottom end of the output shaft of the first electric telescopic rod (601) is fixedly connected to a second pressure sensor (602). The bottom of the detection end of the second pressure sensor (602) is fixedly connected to the top of the corresponding moving rod (603). The two second pressure sensors (602) and the two first electric telescopic rods (601) are electrically connected to the PLC controller (5). The top plate (2) is sleeved on the two first electric telescopic rods (601).

5. The pressing device of a laser tube cutting machine according to claim 2, characterized in that, Sliders (12) are fixedly connected to both sides of the movable plate (401) and both sides of the mounting plate (7). T-shaped slide rails (11) are fixedly connected to the side of the two support plates (3) that are close to each other. T-shaped slide grooves are opened on the side of the two sliders (12) that are far apart from each other. The T-shaped slide grooves are slidably connected to the corresponding T-shaped slide rails (11). A second synchronous control switch is fixedly and electrically connected to the front side of the multi-stage electric telescopic rod (402) located on the left. The second synchronous control switch is electrically connected to the two multi-stage electric telescopic rods (402) and the PLC controller (5).

6. The pressing device of a laser tube cutting machine according to claim 4, characterized in that, Both sides of the top plate (2) are provided with clearance holes. The first electric telescopic rod (601) is located in the corresponding clearance hole and does not contact the inner wall of the clearance hole. The front side of the first electric telescopic rod (601) is fixedly connected to the first synchronous control switch. The first synchronous control switch is electrically connected to the two first electric telescopic rods (601) and the PLC controller (5).

7. The pressing device of a laser tube cutting machine according to claim 1, characterized in that, The support plate (3) is welded and fixed to the top of the base (1), and the bottom of the base (1) is glued and fixed with an anti-slip pad.

8. The pressing device of a laser tube cutting machine according to claim 1, characterized in that, The support plate (3) is detachably fixed to the top of the base (1). Two positioning blocks (13) are fixedly connected to the bottom of the support plate (3). The base (1) is movably fitted on the four positioning blocks (13). The two positioning blocks (13) on the left and right are respectively provided with threaded grooves on the side away from each other. T-shaped fixing bolts (14) are threaded in the threaded grooves. The base (1) is threaded on the four T-shaped fixing bolts (14). Two lockable universal wheels are rotatably installed on both sides of the bottom of the base (1).

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