3D Printer Workbench Real-Time Horizontal Monitoring Device

Abstract

The present invention relates to the technical field of horizontal monitoring devices, and particularly to a real-time horizontal monitoring device for a 3D printer workbench. The horizontal monitoring device includes: a mounting plate for placing the workbench, an electric telescopic plate mounted on the workbench, a pressing ball mounted at the bottom of the output end of the electric telescopic plate, a balancing component mounted on the mounting plate, the balancing component always maintaining a horizontal state under no external force, a trigger sensing component mounted on the mounting plate, and a buzzer for warning the operator that the workbench is not horizontally placed. In the present invention, the electric telescopic plate connected to the workbench and the pressing ball affect the balancing component that always maintains a horizontal state. When the balancing component is unbalanced due to the influence of the electric telescopic plate and the pressing ball, the balancing component will affect the trigger sensing component, causing the buzzer to start, thereby warning the operator, so as to realize the real-time monitoring of the levelness of the workbench.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal monitoring devices, and particularly to a real-time horizontal monitoring device for the working platform of a 3D printer. Background Art

[0002] A 3D printer is a machine for rapid prototyping technology. Based on rapid prototyping technology, a 3D printer prints a digital model into a physical object. The levelness of the working platform of a 3D printer directly affects the quality of the printed model. Therefore, a corresponding horizontal monitoring device is usually provided for the existing working platform of a 3D printer.

[0003] In the prior art, the leveling operation of the working platform of a 3D printer is generally carried out by an operator adjusting the leveling nuts at the four top corners. However, due to manual operation, it is difficult to control the accuracy. Therefore, the operator needs to frequently use a level to detect the levelness of the working platform. Moreover, during the process of printing a model on the working platform of a 3D printer, the shape of the model on the upper surface of the working platform is different, resulting in the continuous change of the center of gravity position of the working platform, thereby affecting the levelness of the working platform. However, since the levelness of the existing working platform of a 3D printer is detected by a level, it is impossible to realize real-time monitoring of the 3D printer, resulting in the inability to timely adjust when the levelness of the working platform changes, and thus the quality of the model printed by the subsequent 3D printer cannot be guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the quality of the model printed by the subsequent 3D printer cannot be guaranteed due to the inability to timely adjust when the levelness of the working platform changes in the prior art, and a real-time horizontal monitoring device for the working platform of a 3D printer is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A real-time horizontal monitoring device for the working platform of a 3D printer, the horizontal monitoring device includes:

[0007] A mounting plate for placing the working platform;

[0008] An electric telescopic plate mounted on the working platform, and at least four electric telescopic plates are provided;

[0009] A pressing ball mounted at the bottom of the output end of the electric telescopic plate;

[0010] A balance assembly mounted on the mounting plate, the balance assembly always maintains a horizontal state without external force, and the balance assembly changes its state through the telescopic movement of the pressing ball;

[0011] A trigger sensing component installed on the mounting plate and a buzzer for warning the operator that the workbench is not placed horizontally. The trigger sensing component is triggered and started by the balance component. The trigger sensing component is electrically connected to the buzzer. The balance component consists of a balance beam, two counterweights with freely adjustable weights, and two limit rings. The top end of the balance beam is in movable contact with the extrusion ball. The two counterweights are located at both ends of the balance beam, and the counterweights are used to ensure that the torques at both ends of the balance beam are consistent. The two limit rings are rotatably connected to both sides of the middle end of the balance beam. One limit ring is a solid disk structure, and the other limit ring is a hollow disk structure. A U-shaped tube for filling water is provided at the corner position of the mounting plate. A first piston and a second piston are respectively slidably arranged at both ends of the U-shaped tube. An extrusion block corresponding to the first piston up and down is provided at the corner position of the workbench. A limit component controlled by the second piston to open and close and used to limit the height position of the counterweight is provided on the mounting plate. The limit component includes:

[0012] A driving rod installed at the top end position of the second piston;

[0013] A second bracket installed on the mounting plate;

[0014] A control switch installed on the second bracket, and the control switch is in movable contact with the driving rod;

[0015] A cylinder installed on the mounting plate, and the output end of the cylinder is used to penetrate the counterweight.

[0016] Preferably, the mounting plate is provided with movable openings for movably sleeving the counterweights at both ends of the balance component, and the mounting plate is provided with a mounting component for mounting the balance component.

[0017] Preferably, the mounting component includes:

[0018] A connecting plate installed on the mounting plate;

[0019] A mounting rod installed on the connecting plate, and the mounting rod is used to movably mount the balance component;

[0020] A limiting plate installed on the mounting rod, and the limiting plate is used to limit the position of the balance component on the mounting rod;

[0021] A fixing ring slidably installed on the mounting rod;

[0022] A return spring connected between the fixing ring and the connecting plate;

[0023] A driving gear ring installed on the fixing ring;

[0024] Rotate the fixing member mounted on the fixed ring. One end of the fixing member away from the driving gear ring penetrates through the limiting ring, and at least one fixing member is provided.

[0025] Preferably, one end of the fixing member close to the driving gear ring is a driven gear meshed with the driving gear ring, the end of the fixing member away from the driving gear ring is a triangular plate structure, and triangular holes corresponding to the number of the fixing members are formed on the limiting ring.

[0026] Preferably, the trigger sensing assembly includes;

[0027] A sliding rod slidably mounted on the mounting plate;

[0028] A force-bearing ball mounted on the top end of the sliding rod, and the force-bearing ball is movably abutted against the bottom end of the balance beam;

[0029] A contact plate mounted on the bottom end of the sliding rod;

[0030] A support spring fixedly connected between the contact plate and the mounting plate;

[0031] A first bracket mounted on the bottom end of the mounting plate;

[0032] A pressure sensor mounted on the first bracket, and the pressure sensor is movably abutted against the contact plate.

[0033] Preferably, the height value of one end of the U-shaped tube where the first piston is provided is 0.6 times the height value of one end of the U-shaped tube where the second piston is provided

[0034] Preferably, a movable through hole for movably sleeving the output end of the air cylinder is formed on the counterweight.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. In the present invention, the electric telescopic plate connected to the workbench and the extrusion ball affect the balance assembly that always maintains a horizontal state. When the balance assembly is unbalanced due to the influence of the electric telescopic plate and the extrusion ball, the balance assembly will affect the trigger sensing assembly, causing the buzzer to start, thereby warning the operator, so as to realize real-time monitoring of the level of the workbench.

[0037] 2. In the present invention, the balance assembly is installed by the installation assembly, so that the balance assembly can be disassembled and replaced, so that the balance assembly can be replaced in time when it is damaged or worn, which helps to ensure the use effect of the balance assembly.

[0038] 3. The present invention restricts the height position of the counterweight through the limiting component, thereby ensuring that the state of the balance component is not affected by the vibration generated during the installation of the workbench and preventing the balance component from frequently activating the buzzer. By observing the telescopic state of the output end of the cylinder in the limiting component, it can be determined whether the levelness of the workbench is qualified after placement and installation, enabling the operator to avoid using a level to detect the levelness of the workbench and improving the work efficiency of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the overall structure in the present invention;

[0040] Figure 2 is a schematic diagram of the workbench structure in the present invention;

[0041] Figure 3 in the present invention Figure 1 is a bottom view;

[0042] Figure 4 is a schematic diagram of the mounting plate structure in the present invention;

[0043] Figure 5 in the present invention Figure 1 is a cross-sectional view;

[0044] Figure 6 in the present invention Figure 5 is a schematic diagram of the enlarged partial structure A in the present invention;

[0045] Figure 7 is a schematic diagram of the connection structure between the balance component and the mounting component in the present invention;

[0046] Figure 8 is a schematic diagram of the trigger sensing component structure in the present invention;

[0047] Figure 9 is a schematic diagram of the mounting component structure in the present invention;

[0048] Figure 10 in the present invention Figure 9 is a schematic diagram of another angle structure in the present invention;

[0049] Figure 11 is a schematic diagram of the connection structure between the contact plate, the driving gear ring and the fixing member in the present invention;

[0050] Figure 12 in the present invention Figure 11 is a schematic diagram of another angle structure in the present invention.

[0051] In the figure:

[0052] 1. Workbench; 101. Extrusion block;

[0053] 2. Mounting plate; 201. U-shaped tube; 202. First piston; 203. Second piston;

[0054] 3. Electric telescopic plate;

[0055] 4. Extrusion ball;

[0056] 5. Balancing component; 501. Balancing beam; 502. Counterweight; 503. Limit ring;

[0057] 6. Trigger sensing component; 601. Sliding rod; 602. Force-receiving ball; 603. Contact plate; 604. Support spring; 605. First bracket; 606. Pressure sensor;

[0058] 7. Buzzer;

[0059] 8. Mounting component; 801. Connecting plate; 802. Mounting rod; 803. Limiting plate; 804. Fixed ring; 805. Return spring; 806. Driving gear ring; 807. Fixing piece;

[0060] 9. Limiting component; 901. Driving rod; 902. Second bracket; 903. Control switch; 904. Cylinder. Specific embodiments

[0061] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0062] The present invention provides the following preferred embodiments: Embodiment

[0063] This embodiment provides a real-time horizontal monitoring device for the 3D printer workbench. The horizontal monitoring device includes a workbench 1, a mounting plate 2, an electric telescopic plate 3, an extrusion ball 4, a balancing component 5, a trigger sensing component 6, and a buzzer 7. The components are arranged as follows:

[0064] The mounting plate 2 is used to place and mount the workbench 1. The electric telescopic plate 3 is mounted on the workbench 1. There are at least four electric telescopic plates 3. By mounting the extrusion ball 4 at the bottom of the output end of the electric telescopic plate 3, the extrusion ball 4 has telescopic performance. When the extrusion ball 4 is driven by the electric telescopic plate 3, it will perform horizontal telescopic movement accordingly.

[0065] The balancing component 5 is mounted on the mounting plate 2. The balancing component 5 always maintains a horizontal state without external force. The balancing component 5 changes its own state through the telescopic movement of the extrusion ball 4, so that the contact between the extrusion ball 4 and the balancing component 5 is a point contact, which helps to improve the sensitivity when the balancing component 5 is triggered.

[0066] A further implementation method is that the balancing component 5 consists of a balance beam 501, two counterweight blocks 502 with freely adjustable weights, and two limit rings 503. The top end of the balance beam 501 is in movable contact with the extrusion ball 4. It should be noted that the horizontal plane at the bottom end of the extrusion ball 4 is flush with the horizontal plane at the top end of the balance beam 501. The two counterweight blocks 502 are located at both ends of the balance beam 501. The counterweight blocks 502 are used to ensure that the torques at both ends of the balance beam 501 are consistent. The counterweight block 502 consists of a box body, an inclined baffle, and counterweight sheets. One side of the box body is open, and the end of the baffle close to the opening of the box body is the upper end, and the end of the baffle far from the opening of the box body is the lower end. The mounting plate 2 is provided with movable openings for movably sleeving the counterweight blocks 502 at both ends of the balancing component 5, providing a moving space for the counterweight blocks 502. The two limit rings 503 are rotatably connected to both sides of the middle end of the balance beam 501;

[0067] The trigger sensing component 6 installed on the mounting plate 2 and the buzzer 7 for warning the operator that the workbench 1 is not placed horizontally. The trigger sensing component 6 is triggered and started by the balancing component 5. The trigger sensing component 6 is electrically connected to the buzzer 7. The trigger sensing component 6 includes a sliding rod 601, a force-bearing ball 602, a contact plate 603, a support spring 604, a first bracket 605, and a pressure sensor 606. The components are arranged as follows;

[0068] The sliding rod 601 is slidably installed on the mounting plate 2. The force-bearing ball 602 is installed at the top end of the sliding rod 601. The force-bearing ball 602 is in movable contact with the bottom end of the balance beam 501, so that when the force-bearing ball 602 comes into contact with the balancing component 5, it is a point contact, which helps to improve the sensitivity of the sliding rod 601 when it is stressed. The contact plate 603 is installed at the bottom end of the sliding rod 601. The support spring 604 is fixedly connected between the contact plate 603 and the mounting plate 2. The sliding rod 601 is supported and limited by the support spring 604, so that the sliding rod 601 tends to move to its initial state and reset when not under external force, thereby keeping the height position of the sliding rod 601 unchanged. The first bracket 605 is installed at the bottom end of the mounting plate 2. The pressure sensor 606 is installed on the first bracket 605. The pressure sensor 606 is in movable contact with the contact plate 603. When the state of the balancing component 5 changes, the force-bearing ball 602 will be squeezed by the balancing component 5, causing the sliding rod 601 to be stressed and drive the contact plate 603 to squeeze the pressure sensor 606. This squeezing force can be detected by the pressure sensor 606. By monitoring the change in the output signal of the pressure sensor 606, when the output signal of the pressure sensor 606 changes, the buzzer 7 is started to warn and notify the operator to handle it. It should be noted that the pressure sensor 606 is equipped with a controller. The controller is responsible for monitoring the downward movement of the sliding rod 601. It is an electronic control unit for detecting and processing the precise movement of the sliding rod 601 and controlling the opening and closing of the buzzer 7.

[0069] When using the real-time horizontal monitoring device for the 3D printer workbench, operate according to the following steps:

[0070] Place the workbench 1 on the mounting plate 2 and install it. Start the electric telescopic plate 3. The electric telescopic plate 3 drives the extrusion ball 4 to move outwards. The extrusion ball 4 is in movable contact with the balance beam 501. If the workbench 1 is in an inclined state at this time, the horizontal plane at the lowest end of the extrusion ball 4 is not consistent with the top horizontal plane of the balance beam 501, causing the state of the balance beam 501 to change when the extrusion ball 4 contacts it. One end of the balance beam 501 moves downwards, and the other end of the balance beam 501 moves upwards. The balance beam 501 presses the force-bearing ball 602 to move downwards. The force-bearing ball 602 drives the sliding rod 601 to move downwards. The sliding rod 601 drives the contact plate 603 to move downwards. The contact plate 603 stretches the support spring 604, and the contact plate 603 presses the pressure sensor 606, causing the output signal of the pressure sensor 606 to change, and then starting the buzzer 7 to notify the operator to adjust the level of the workbench 1. Embodiment

[0071] Reference Figure 7 、 Figures 9 to 12 As shown in [references], on the basis of Embodiment 1, in this embodiment, by introducing the installation component 8, the free disassembly and assembly of the balance component 5 are realized. The implementation method is as follows:

[0072] The installation component 8 is arranged on the mounting plate 2. The installation component 8 includes a connecting plate 801, an installation rod 802, a limiting plate 803, a fixing ring 804, a return spring 805, a driving gear ring 806 and a fixing part 807. The settings of each component are as follows:

[0073] The connecting plate 801 is installed on the mounting plate 2. The installation rod 802 is installed on the connecting plate 801. The installation rod 802 is used for movably installing the balance component 5. The limiting plate 803 is installed on the installation rod 802. The limiting plate 803 is used to limit the position of the balance component 5 on the installation rod 802. The fixing ring 804 is slidably installed on the installation rod 802. The return spring 805 is connected between the fixing ring 804 and the connecting plate 801. Due to the elastic force of the return spring 805, the fixing ring 804 tends to move to the initial state and reset when not affected by external forces.

[0074] The driving gear ring 806 is installed on the fixing ring 804, and the fixing member 807 is rotatably installed on the fixing ring 804. The end of the fixing member 807 away from the driving gear ring 806 passes through the limiting ring 503. At least one fixing member 807 is provided. The end of the fixing member 807 close to the driving gear ring 806 is a driven gear meshing with the driving gear ring 806. The end of the fixing member 807 away from the driving gear ring 806 is a triangular plate structure. The limiting ring 503 is provided with triangular holes corresponding to the number of the fixing members 807. It should be noted that: one limiting ring 503 is a solid disc structure, and the other limiting ring 503 is a hollow disc structure, so as to provide an operating space for the fixing member 807. The end of the fixing member 807 is located away from the limiting ring 503. On one side of the limit plate 803, the end of the fixing part 807 is located in the limit ring 503 of the hollow disc structure, and the reset spring 805 is in a stretched state at this time. The fixing part 807 moves toward the mounting plate 2 under the influence of the reset spring 805. Since the limit plate 803 is fixedly mounted on the mounting rod 802, and the limit plate 803 and the limit ring 503 are movable against each other, the fixing part 807 cannot drive the limit ring 503 to move horizontally, and then the limit ring 503 is laterally fixed by the fixing part 807, and the limit ring 503 is longitudinally fixed by the sliding connection between the triangular hole and the fixing part 807, so that the balancing component 5 can be freely assembled, which helps to ensure the use effect of the balancing component 5.

[0075] When using the 3D printer worktable real-time level monitoring device in the second embodiment, follow the steps below:

[0076] When the balancing component 5 needs to be disassembled, the driving ring gear 806 is rotated, and the driving ring gear 806 drives the fixing part 807 to rotate. The triangular plate structure at the end of the fixing part 807 corresponds to the triangular hole. Under the elastic force of the reset spring 805, the fixing part 807 moves toward the initial state until it is reset. At this time, the fixing part 807 no longer interferes with and fixes the balancing component 5. Example

[0077] refer to Figures 5 to 6 As shown, on the basis of the second embodiment, this embodiment introduces a U-shaped tube 201, a first piston 202, a second piston 203, an extrusion block 101 and a limit assembly 9 to ensure that the trigger sensor assembly 6 will not be accidentally touched during the installation of the workbench 1 and to perform a horizontal detection on the installed workbench 1. The implementation method is as follows:

[0078] At the corner positions of the mounting plate 2, a U-shaped tube 201 for filling water is provided. First and second pistons 202 and 203 are slidably provided at both ends of the U-shaped tube 201 respectively. The height value of the end of the U-shaped tube 201 where the first piston 202 is provided is 0.6 times the height value of the end of the U-shaped tube 201 where the second piston 203 is provided. It should be noted that: when the workbench 1 is not installed, the first piston 202 and the second piston 203 are on the same horizontal plane, and a pressing block 101 corresponding to the first piston 202 up and down is provided at the corner position of the workbench 1;

[0079] On the mounting plate 2, a limiting component 9 controlled by the second piston 203 to open and close and used to limit the height position of the counterweight 502 is provided. The limiting component 9 includes a driving rod 901, a second bracket 902, a control switch 903 and a cylinder 904. The settings of each component are as follows:

[0080] The driving rod 901 is installed at the top end position of the second piston 203. The second bracket 902 is installed on the mounting plate 2. The control switch 903 is installed on the second bracket 902. The control switch 903 is in movable contact with the driving rod 901. The cylinder 904 is installed on the mounting plate 2. The output end of the cylinder 904 is used to penetrate the counterweight 502. An activity through hole for movably sleeving the output end of the cylinder 904 is provided on the counterweight 502. It should be noted that: when the workbench 1 is not placed and installed, the output end of the cylinder 904 is located in the activity through hole.

[0081] When using the 3D printer workbench real-time horizontal monitoring device in Embodiment 3, operate according to the following steps:

[0082] During the placement and installation of the workbench 1, the workbench 1 drives the pressing block 101 into the U-shaped tube 201. The first piston 202 moves downward in the U-shaped tube 201 and squeezes the water body. Under the action of the water pressure, the second piston 203 moves upward. The second piston 203 drives the driving rod 901 to move upward. If a corner of the workbench 1 is lower than other corners during the placement process, the driving rod 901 at this corner position will contact the control switch 903 prior to the driving rods 901 at other corner positions. The control switch 903 is squeezed, and the control switch 903 controls the contraction of the output end of the corresponding cylinder 904, so that the operator does not need to detect with a level after installation, which helps to save the working time of the operator and thus improve the working efficiency of the operator.

[0083] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A real-time horizontal monitoring device for a 3D printer workbench, characterized in that, The horizontal monitoring device includes: a mounting plate (2) for placing a workbench (1); electric telescopic plates (3) mounted on the workbench (1), with at least four of the electric telescopic plates (3); a pressing ball (4) mounted at the bottom of the output end of the electric telescopic plate (3); a balance assembly (5) mounted on the mounting plate (2), which always maintains a horizontal state without external force, and the balance assembly (5) changes its state through the telescopic movement of the pressing ball (4); a trigger sensing assembly (6) mounted on the mounting plate (2) and a buzzer (7) for warning the operator that the workbench (1) is not placed horizontally. The trigger sensing assembly (6) is triggered and started by the balance assembly (5), the trigger sensing assembly (6) is electrically connected to the buzzer (7), the balance assembly (5) is composed of a balance beam (501), two counterweights (502) with freely adjustable weights, and two limit rings (503). The top of the balance beam (501) is in movable contact with the pressing ball (4), the two counterweights (502) are located at both ends of the balance beam (501), the counterweights (502) are used to ensure that the torques at both ends of the balance beam (501) are consistent, the two limit rings (503) are rotatably connected to both sides of the middle end of the balance beam (501), one of the limit rings (503) is a solid disc structure, the other limit ring (503) is a hollow disc structure, a U-shaped tube (201) for filling water is provided at the corner position of the mounting plate (2), first and second pistons (202, 203) are slidably provided at both ends of the U-shaped tube (201), a pressing block (101) corresponding to the first piston (202) up and down is provided at the corner position of the workbench (1), and a limit assembly (9) controlled by the second piston (203) to open and close and used to limit the height position of the counterweight (502) is provided on the mounting plate (2). The limit assembly (9) includes: a driving rod (901) mounted on the top of the second piston (203); a second bracket (902) mounted on the mounting plate (2); a control switch (903) mounted on the second bracket (902), and the control switch (903) is in movable contact with the driving rod (901); a cylinder (904) mounted on the mounting plate (2), and the output end of the cylinder (904) is used to penetrate the counterweight (502).

2. The real-time horizontal monitoring device for the 3D printer workbench according to claim 1, wherein An activity opening for movably sleeving the counterweights (502) at both ends of the balance assembly (5) is formed on the mounting plate (2), and a mounting assembly (8) for mounting the balance assembly (5) is provided on the mounting plate (2).

3. The real-time horizontal monitoring device for the 3D printer workbench according to claim 2, characterized in that, The mounting assembly (8) includes: a connecting plate (801) mounted on the mounting plate (2); a mounting rod (802) mounted on the connecting plate (801), and the mounting rod (802) is used to movably mount the balance assembly (5); A limit plate (803) installed on the installation rod (802), and the limit plate (803) is used to limit the position of the balance assembly (5) on the installation rod (802); A fixing ring (804) slidably installed on the installation rod (802); A return spring (805) connected between the fixing ring (804) and the connecting plate (801); A driving gear ring (806) installed on the fixing ring (804); A fixing member (807) rotatably installed on the fixing ring (804), one end of the fixing member (807) away from the driving gear ring (806) penetrates through the limit ring (503), and at least one fixing member (807) is provided.

4. The real-time horizontal monitoring device for the 3D printer workbench according to claim 3, wherein, One end of the fixing member (807) close to the driving gear ring (806) is a driven gear meshed with the driving gear ring (806), the end of the fixing member (807) away from the driving gear ring (806) is a triangular plate structure, and triangular holes corresponding to the number of the fixing members (807) are formed on the limit ring (503).

5. The real-time horizontal monitoring device for the 3D printer workbench according to claim 1, wherein, The trigger sensing assembly (6) includes; A sliding rod (601) slidably installed on the installation plate (2); A force-bearing ball (602) installed at the top end of the sliding rod (601), and the force-bearing ball (602) is in movable contact with the bottom end of the balance beam (501); A contact plate (603) installed at the bottom end of the sliding rod (601); A support spring (604) fixedly connected between the contact plate (603) and the installation plate (2); A first bracket (605) installed at the bottom end of the installation plate (2); A pressure sensor (606) installed on the first bracket (605), and the pressure sensor (606) is in movable contact with the contact plate (603).

6. The real-time horizontal monitoring device for the 3D printer workbench according to claim 1, characterized in that, The height value of one end of the U-shaped tube (201) where the first piston (202) is provided is 0.6 times the height value of one end of the U-shaped tube (201) where the second piston (203) is provided.

7. The real-time horizontal monitoring device for the 3D printer workbench according to claim 1, characterized in that, A movable through hole for movably sleeving the output end of the air cylinder (904) is formed on the counterweight (502).

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