A detection device of a 3D printer head mechanism

Abstract

The utility model discloses a kind of detection device of 3D printer head mechanism, it includes fixture, limiting component, line diameter detection sensor and extrusion force test mechanism;The fixture is used to install printer head mechanism, the limiting component is set to the side of the fixture to be used to the printer head mechanism compression tight location;The extrusion force test mechanism is set to the top of the fixture, to detect printer head mechanism consumable extrusion force;The line diameter detection sensor is set to the below of the fixture, and the line diameter detection sensor is used to detect the line diameter of the printer head mechanism output consumable.This application realizes the performance detection of printer head mechanism by the cooperation of sensor and mechanical structure, effectively improves detection efficiency and detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a detection device for a 3D printer head mechanism. Background Technology

[0002] 3D printing, short for three-dimensional printing, is a technology that uses computer-generated three-dimensional models as a basis and software-controlled layer-by-layer manufacturing to create a finished product. It is a type of additive manufacturing technology. 3D printing technology is typically achieved using digital printing techniques. 3D printers can be used in any industry, with wide applications in medical, construction, automotive, aerospace, and education.

[0003] The performance of the printer head mechanism in a 3D printer directly affects the quality of the 3D printed product. Testing its various performance parameters, especially the extrusion force, is crucial as it influences the selection of subsequent filament materials and tensile strength. Therefore, it is necessary to conduct relevant performance tests on the 3D printer head mechanism. Currently, the testing of extrusion force and other performance parameters of the 3D printer head mechanism relies on manual methods, resulting in low testing efficiency and accuracy.

[0004] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a detection device for the 3D printer head mechanism, which solves the problems of low efficiency and low accuracy of the extrusion force detection of the existing printer head mechanism, which relies on manual detection.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A detection device for a 3D printer head mechanism includes a fixture, a limiting component, a wire diameter detection sensor, and an extrusion force testing mechanism; The fixture is used to install the printer head mechanism, and the limiting component is disposed on one side of the fixture to press and limit the printer head mechanism. The extrusion force testing mechanism is located above the fixture and is used to test the extrusion force of the consumables in the printhead mechanism. The wire diameter detection sensor is located below the fixture and is used to detect the wire diameter of the consumables output by the printhead mechanism.

[0007] The above structure also includes a base plate. The extrusion force testing mechanism includes a force sensor and a first double-slide cylinder. A connecting plate is provided on the base plate. The force sensor is fixedly installed on the connecting plate and connected to the first double-slide cylinder. A guide rail extending vertically is provided on the base plate. The first double-slide cylinder is connected to the guide rail. A first clamping block is provided on each of the two slides of the first double-slide cylinder. The first double-slide cylinder is used to drive the two first clamping blocks to move closer to or further away from each other.

[0008] The above structure also includes an unwinding assembly for unwinding consumables. The unwinding assembly is disposed above the extrusion force testing mechanism, and the transmission path of the consumables passes between the two first clamping blocks, which can clamp the consumables.

[0009] The above structure also includes a first photoelectric sensing mechanism for detecting the ejection photoelectric switch of the printhead mechanism. The first photoelectric sensing mechanism includes a second double slide cylinder that can be lifted and lowered on the guide rail and a cut-off trigger component disposed on one side of the fixture. A second clamping block is fixedly connected to each of the two slides of the second double slide cylinder, and the transmission path of the consumable passes between the two second clamping blocks. The two second clamping blocks can clamp the consumable. The cut-off trigger component is used to trigger the printhead mechanism to cut off the consumable.

[0010] In the above structure, a lifting cylinder is fixedly installed on the base plate, and the piston rod of the lifting cylinder is connected to the second double slide cylinder to drive the second double slide cylinder to lift.

[0011] In the above structure, the cutting trigger component includes a first cylinder fixedly disposed on one side of the fixture. The output shaft of the first cylinder is fixedly disposed with a cutter pusher block. The first cylinder can drive the cutter pusher block to approach or move away from the cutting trigger position of the printer head mechanism. The first cylinder is electrically connected to the second double slide cylinder.

[0012] The above structure also includes a second photoelectric sensing component for detecting the position photoelectric switch of the printhead mechanism. The second photoelectric sensing component includes a second cylinder and a light shield. The second cylinder is fixedly mounted on the base plate, and the light shield is fixedly mounted on the output shaft of the second cylinder. The second cylinder is used to drive the light shield to move closer to or further away from the position photoelectric switch of the printhead mechanism. The light shield can extend into the sensing range of the position photoelectric switch.

[0013] In the above structure, the fixture has a mounting groove, the shape and size of which are adapted to the shape of the print head mechanism.

[0014] In the above structure, the limiting component includes a base, a wrench, a pressing head, and a mounting arm. The base is fixedly disposed on one side of the fixture. One end of the mounting arm is hinged to the base. The pressing head is disposed on the side of the mounting arm away from the base. One end of the wrench is hinged to the mounting arm, and a connecting block is hinged to the side of the wrench near the mounting arm. The connecting block is hinged to the base.

[0015] The above structure also includes a cabinet and a control unit. The base plate is fixedly installed on the side wall of the cabinet. The extrusion force testing mechanism, the first photoelectric sensing mechanism, the second photoelectric sensing mechanism, and the wire diameter detection sensor are electrically connected to the control unit. A push-button switch is provided on the cabinet, and the push-button switch is electrically connected to the control unit.

[0016] The beneficial effects of this utility model are as follows: The detection device of the 3D printer head mechanism of this utility model, by setting an extrusion force detection mechanism and a wire diameter detection sensor, and with a reasonable spatial layout, can automatically detect the extrusion force of the printer head mechanism and the wire diameter of the extruded consumable. Compared with manual detection, it effectively improves the detection speed and detection accuracy, and effectively reduces the influence of human factors on the detection results. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 Enlarged diagram of section A in the middle; Figure 3 This is a schematic diagram of the installation structure of the extrusion force testing mechanism of this utility model; Figure 4 This is a schematic diagram of the connection structure of the limiting component of this utility model.

[0019] Figure label: 1. Extrusion force testing mechanism; 11. Force sensor; 12. First double-slide cylinder; 121. First mounting block; 13. First clamping block; 14. Connecting plate; 2. First photoelectric sensing mechanism; 21. Second double-slide cylinder; 211. Second mounting block; 22. Second clamping block; 23. Cut-off trigger assembly; 231. First cylinder; 232. Cutter pusher block; 24. Lifting cylinder; 3. Second photoelectric sensing component; 31. Second cylinder; 32. Light shield; 4. Wire diameter detection sensor; 5. Fixture; 51. Mounting slot; 6. Limiting component; 61. Wrench; 611. Connecting block; 62. Base; 63. Pressing head; 64. Mounting arm; 7. Printer head mechanism; 71. Cut-off trigger position; 72. Position photoelectric switch; 8. Cabinet; 81. Base plate; 811. Guide rail; 82. Unwinding assembly; 821. Guide tube; 83. Consumables. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0022] Generally, the printhead mechanism 7 of an existing 3D printer includes a gear set for conveying filament 83 and a filament 83 heating mechanism. The gear set is connected to a drive motor. When the drive motor rotates, it drives the filament 83 to be wound into the extrusion mechanism and conveyed downward to the filament 83 heating mechanism. The filament 83 heating mechanism includes a nozzle and a heating component. The filament 83 is wound into the extrusion mechanism and conveyed to the heating component to heat and melt the filament 83. The nozzle serves as the discharge port to output the molten filament 83.

[0023] Reference Figures 1 to 4 This invention provides a detection device for a 3D printer head mechanism, which can be used to detect the extrusion force and wire diameter of the molten filament 83 extruded from the printer head mechanism 7 of a 3D printer. The detection device for the 3D printer head mechanism includes a fixture 5, a limiting component 6, a wire diameter detection sensor 4, and an extrusion force testing mechanism 1. The fixture 5 is used to mount the printer head mechanism 7; the limiting component 6 is disposed on one side of the fixture 5 to press the printer head mechanism 7 to be tested to facilitate the testing operation; the extrusion force testing mechanism 1 is disposed above the fixture 5 to detect the extrusion force of the filament 83 of the printer head mechanism 7; and the wire diameter detection sensor 4 is used to detect the wire diameter of the molten filament 83 output from the nozzle of the printer head mechanism 7.

[0024] The detection device of the 3D printer head mechanism also includes a control unit (not shown in the figure). The extrusion force testing mechanism 1 and the wire diameter detection sensor 4 are all electrically connected to the control unit. The control unit can control the operation of the extrusion force testing mechanism 1 and the wire diameter detection sensor 4, receive detection data, and provide feedback on the test status to the operator through a digital display screen.

[0025] Reference Figures 1 to 3 The detection device for the 3D printer head mechanism also includes a base plate 81. The extrusion force testing mechanism 1 includes a force sensor 11 and a first double-slide cylinder 12. The force sensor 11 is mounted on the base plate 81 and connected to the first double-slide cylinder 12. Specifically, a guide rail 811 extending vertically is fixedly mounted on the base plate 81, and the guide rail 811 is located above the fixture 5. A connecting plate 14 located above the guide rail 811 is fixedly mounted on the base plate 81. A first mounting block 121 is mounted on the guide rail 811, and the first double-slide cylinder 12 is fixedly mounted on the first mounting block 121. A first clamping block 13 is mounted on each of the two slides of the first double-slide cylinder 12. The first double-slide cylinder is used to drive the two first clamping blocks 13 to move towards or away from each other. One side of the force sensor 11 is fixedly connected to the connecting plate 14, and the other side is fixedly connected to the first mounting block 121. When the first dual-slide cylinder 12 is subjected to force, it can transmit the force to the force sensor 11, which then records the force in real time and feeds the data back to the control unit.

[0026] Reference Figure 3 An unwinding assembly 82 is fixedly mounted on the base plate 81, located above the extrusion force detection mechanism. The unwinding assembly 82 unwinds the consumable 83 onto the printhead mechanism 7 to be tested, so that the printhead mechanism 7 can simulate normal working conditions, thereby enabling the testing of its various performance characteristics. A guide tube 821 is provided between the unwinding assembly 82 and the extrusion force detection mechanism to guide the consumable 83. The transmission path of the consumable 83 passes between two first clamping blocks 13. When the first double-slide cylinder 12 drives the two first clamping blocks 13 to come close together, the consumable 83 can be clamped.

[0027] During testing, the consumable 83 is first introduced into the printhead mechanism 7, and the printhead mechanism 7 is started. During the rotation of the gears in the printhead mechanism 7, a downward pulling force is generated on the consumable 83. At this time, the extrusion force detection mechanism is activated, so that the two first clamping blocks 13 clamp the consumable 83. When the gears continue to rotate and pull the consumable 83 downward, a stable pulling resistance force is generated on the two first clamping blocks 13. The force sensor 11 detects, records and feeds back this force, thus completing the extrusion force test.

[0028] Reference Figure 1 and Figure 2The wire diameter detection sensor 4 is used to detect the wire diameter of the molten consumable 83 output from the nozzle of the print head mechanism 7. Specifically, the wire diameter detection sensor 4 is located below the fixture 5, and the transmission path of the consumable 83 extruded from the nozzle of the print head mechanism 7 passes through the sensing area of ​​the wire diameter detection sensor 4. When the extruded consumable 83 passes through the sensing area of ​​the wire diameter detection sensor 4, the wire diameter detection sensor 4 detects the wire diameter of the consumable 83 and feeds back the detection data to the control range for the operator to view.

[0029] Reference Figure 2 and Figure 3 Furthermore, it also includes a first photoelectric sensing mechanism 2 for detecting the ejection photoelectric switch of the printhead mechanism 7. The first photoelectric sensing mechanism 2 includes a second double-slide cylinder 21 that is vertically mounted on the guide rail 811 and a cut-off trigger component 23. The cut-off trigger component 23 is used to trigger the printhead mechanism 7 to cut off the consumable 83 for subsequent detection. The second double-slide cylinder 21 is vertically mounted on the guide rail 811. Each of the two slides of the second double-slide cylinder 21 is provided with a second clamping block 22, and the transmission path of the consumable 83 passes between the two second clamping blocks 22. The second double-slide cylinder 21 can drive the second clamping blocks 22 to clamp the consumable 83.

[0030] The printhead mechanism 7 typically includes a cutter for cutting the consumable 83, a cutting rod connected to the cutter, and a photoelectric switch for detecting whether the consumable 83 has exited the printhead mechanism 7. When replacing the consumable 83, it needs to be cut off from the printhead mechanism 7. When the cut-off trigger position 71 of the printhead mechanism 7 is impacted, it drives the cutting rod to rotate, which in turn drives the cutter to cut the consumable 83 in a direction perpendicular to the consumable 83 within the printhead mechanism 7. A cut-off trigger component 23 is provided to simulate an impact on the printhead mechanism 7, causing the cutter to cut the consumable 83, so that the performance of the photoelectric switch can be subsequently tested.

[0031] Reference Figure 2 and Figure 3 Furthermore, a lifting cylinder 24 is fixedly mounted on the base plate 81. The lifting cylinder 24 is electrically connected to the control unit, and the piston rod of the lifting cylinder 24 is connected to the second double-slide cylinder 21 to drive the second double-slide cylinder 21 to perform lifting and lowering actions. In this embodiment, a second mounting block 211 is slidably mounted on the guide rail 811. The second double-slide cylinder 21 is fixedly mounted on the second mounting block 211, and the output shaft of the lifting cylinder 24 is fixedly connected to the second mounting block 211. The lifting cylinder 24 pushes the second mounting block 211 to lift and lower, thereby driving the second double-slide cylinder 21 to lift and lower.

[0032] Furthermore, the cut-off trigger assembly 23 includes a first cylinder 231 fixedly mounted on one side of the fixture 5. The first cylinder 231 is electrically connected to the control unit, which can control the operation of the first cylinder 231. A cutter pusher 232 is fixedly mounted on the output shaft of the first cylinder 231. The first cylinder 231 can drive the cutter pusher 232 to approach or move away from the printhead mechanism 7. Specifically, the piston rod of the first cylinder 231 extends to drive the cutter pusher 232 to approach the printhead mechanism 7 until the cutter pusher 232 hits the cut-off trigger position 71, triggering the cutter to cut the consumable 83. Then, the piston rod of the first cylinder 231 retracts, driving the cutter pusher 232 away from the printhead mechanism 7.

[0033] In use, the second double slide cylinder 21 drives the second clamping block 22 to clamp the consumable 83; then the piston rod of the first cylinder 231 extends, causing the cutter push block 232 to trigger the printer head mechanism 7 to cut the consumable 83; at this time, the lifting cylinder 24 is activated, driving the second double slide cylinder 21 to rise and pull the consumable 83 out of the printer head mechanism 7. During this process, the on / off status of the ejection photoelectric switch can be observed to determine whether the ejection photoelectric switch is sensitive.

[0034] During operation, the print head mechanism 7 needs to be installed into the 3D printing equipment. Therefore, a positioning photoelectric switch 72 is typically installed on the print head mechanism 7, and the 3D printing equipment contains a sensor that works in conjunction with the positioning photoelectric switch 72. When the print head mechanism 7 is installed into the 3D printing equipment and the sensor is within the sensing range of the positioning photoelectric switch 72, the indicator light on the positioning photoelectric switch 72 illuminates, indicating that the print head mechanism 7 is properly installed. The sensor then sends a positioning signal to the 3D printing equipment, allowing subsequent operations to proceed. Therefore, the effectiveness of the positioning photoelectric switch 72 directly affects whether the 3D printing equipment can operate normally.

[0035] Reference Figure 2 and Figure 3Furthermore, it also includes a second photoelectric sensing component 3 for detecting the position photoelectric switch 72 of the printhead mechanism 7. The second photoelectric sensing component 3 can simulate the movement of the sensing element into and out of the position photoelectric switch 72. During this process, the operator can observe the indicator light of the position photoelectric switch 72. Specifically, the second photoelectric sensing component 3 includes a second cylinder 31 and a light shield 32. The second cylinder 31 is fixedly mounted on the base plate 81, and the light shield 32 is fixedly mounted on the output shaft of the second cylinder 31. The second cylinder 31 can drive the light shield 32 to approach or move away from the position photoelectric switch 72 of the printhead mechanism 7, and the light shield 32 can extend into the sensing range of the position photoelectric switch 72. The second cylinder 31 can drive the light shield 32 into / out of the sensing range of the position photoelectric switch 72. When the light shield 32 extends into the sensing range of the position photoelectric switch 72, it simulates the situation where the printhead mechanism 7 is installed in place. The operator can intuitively observe the effectiveness of the position photoelectric switch 72 by observing whether the indicator light of the position photoelectric switch 72 is on or off during this process.

[0036] Reference Figure 2 and Figure 4 The fixture 5 is used to mount the printhead mechanism 7, and the limiting component 6 is used to press and limit the printhead mechanism 7. Specifically, the fixture 5 has a mounting groove 51, the shape and size of which are adapted to the shape of the printhead mechanism 7. The cut-off trigger position 71 and the positioning photoelectric switch 72 of the printhead mechanism 7 are both located outside the mounting groove 51, that is, the cut-off trigger component 23 and the second photoelectric sensing component 3 will not interfere with the fixture 5 when they are in operation. The mounting groove 51 limits the printhead mechanism 7, and the limiting component 6 further presses the printhead mechanism 7 to prevent the printhead mechanism 7 from detaching from the fixture 5 during the testing process.

[0037] The limiting component 6 includes a base 62, a wrench 61, a pressing head 63, and a mounting arm 64. The base 62 is fixedly mounted on one side of the fixture 5. One end of the mounting arm 64 is hinged to the base 62. The pressing head 63 is located on the side of the mounting arm 64 away from the base 62. One end of the wrench 61 is hinged to the mounting arm 64, and a connecting block 611 is hinged to the side of the wrench 61 closest to the mounting arm 64. The end of the connecting block 61 away from the wrench 61 is hinged to the base 62. Pressing the wrench 61 can press the pressing head 63 against the print head, and lifting the wrench 61 can disengage the pressing head 63 from the print head. In actual installation, the pressing head 63 can be made of a soft material such as rubber to reduce the possibility of the pressing head 63 damaging the print head mechanism 7.

[0038] Reference Figure 1Furthermore, the detection device for the 3D printer head mechanism of this utility model also includes a cabinet 8, a base plate 81 fixedly installed on the side wall of the cabinet 8, and a push-button switch installed on the cabinet 8. The push-button switch is electrically connected to the control unit and can control the operation of the device through the push-button switch.

[0039] In this embodiment, three testing stations are arranged side by side on the cabinet 8. Each testing station is equipped with components such as the fixture 5, the limiting component 6, the extrusion force testing mechanism 1, the wire diameter detection sensor 4, the first photoelectric sensing mechanism 2, and the second photoelectric sensing component 3 as described above. This allows the three printing head mechanisms 7 to be tested separately using the three testing stations, which can effectively improve the testing efficiency.

[0040] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A detection device for a 3D printer head mechanism, characterized in that: This includes fixtures, limit components, wire diameter detection sensors, and extrusion force testing mechanisms; The fixture is used to install the printer head mechanism, and the limiting component is disposed on one side of the fixture to press and limit the printer head mechanism. The extrusion force testing mechanism is located above the fixture and is used to test the extrusion force of the consumables in the printhead mechanism. The wire diameter detection sensor is located below the fixture and is used to detect the wire diameter of the consumables output by the printhead mechanism.

2. The detection device for a 3D printer head mechanism according to claim 1, characterized in that: It also includes a base plate. The extrusion force testing mechanism includes a force sensor and a first double-slide cylinder. A connecting plate is provided on the base plate. The force sensor is fixedly installed on the connecting plate and connected to the first double-slide cylinder. A guide rail extending in a vertical direction is provided on the base plate. The first double-slide cylinder is connected to the guide rail. A first clamping block is provided on each of the two slides of the first double-slide cylinder. The first double-slide cylinder is used to drive the two first clamping blocks to move closer to each other or further away from each other.

3. The detection device for a 3D printer head mechanism according to claim 2, characterized in that: It also includes an unwinding assembly for unwinding consumables, the unwinding assembly being disposed above the extrusion force testing mechanism, and the consumables being transported between two first clamping blocks, the two first clamping blocks being able to clamp the consumables.

4. The detection device for a 3D printer head mechanism according to claim 2, characterized in that: It also includes a first photoelectric sensing mechanism for detecting the ejection photoelectric switch of the printhead mechanism. The first photoelectric sensing mechanism includes a second double slide cylinder that can be lifted and lowered on the guide rail and a cut-off trigger component disposed on one side of the fixture. A second clamping block is fixedly connected to each of the two slides of the second double slide cylinder, and the transmission path of the consumable passes between the two second clamping blocks. The two second clamping blocks can clamp the consumable. The cut-off trigger component is used to trigger the printhead mechanism to cut off the consumable.

5. The detection device for a 3D printer head mechanism according to claim 4, characterized in that: A lifting cylinder is fixedly installed on the base plate. The piston rod of the lifting cylinder is connected to the second double slide cylinder to drive the second double slide cylinder to lift.

6. The detection device for a 3D printer head mechanism according to claim 4, characterized in that: The cutting trigger assembly includes a first cylinder fixedly disposed on one side of the fixture. A cutter pusher block is fixedly disposed on the output shaft of the first cylinder. The first cylinder can drive the cutter pusher block to approach or move away from the cutting trigger position of the printer head mechanism. The first cylinder is electrically connected to the second double slide cylinder.

7. The detection device for a 3D printer head mechanism according to claim 1, characterized in that: It also includes a second photoelectric sensing component for detecting the position photoelectric switch of the printhead mechanism. The second photoelectric sensing component includes a second cylinder and a light shield. The second cylinder is fixedly mounted on the base plate, and the light shield is fixedly mounted on the output shaft of the second cylinder. The second cylinder is used to drive the light shield to move closer to or further away from the position photoelectric switch of the printhead mechanism. The light shield can extend into the sensing range of the position photoelectric switch.

8. The detection device for a 3D printer head mechanism according to claim 1, characterized in that: The fixture has a mounting groove, the shape and size of which are adapted to the shape of the print head mechanism.

9. The detection device for a 3D printer head mechanism according to claim 1, characterized in that: The limiting assembly includes a base, a wrench, a pressing head, and a mounting arm. The base is fixedly disposed on one side of the fixture. One end of the mounting arm is hinged to the base. The pressing head is disposed on the side of the mounting arm away from the base. One end of the wrench is hinged to the mounting arm, and a connecting block is hinged to the side of the wrench near the mounting arm. The connecting block is hinged to the base.

10. The detection device for a 3D printer head mechanism according to claim 2, characterized in that: It also includes a cabinet and a control unit. The base plate is fixedly installed on the side wall of the cabinet. The extrusion force testing mechanism, the first photoelectric sensing mechanism, the second photoelectric sensing mechanism, and the wire diameter detection sensor are electrically connected to the control unit. A push-button switch is provided on the cabinet, and the push-button switch is electrically connected to the control unit.

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