A PETG polyester melt resistivity measuring device that is easy to wire

Abstract

This utility model relates to the technical field of resistivity measuring equipment, specifically to a PETG polyester melt resistivity measuring device that facilitates wiring. It includes a resistivity measuring device body connected to four connecting wires. One connecting wire is connected to a heating box, inside which is placed a storage tray, and inside the storage tray is placed a pressure plate. The pressure plate and storage tray are detachably connected to the connecting wires via a connecting mechanism. The connecting mechanism includes a connecting block and a connecting cylinder. A rotating block is rotatably connected to the inner wall of the connecting block, and the connecting wire passes through the rotating block and is fixedly connected to a flexible wire. A fixing post is fixedly connected to the inner bottom surface of the connecting cylinder. This utility model completely conceals the wiring points within the connecting cylinder, thus avoiding the problem of exposed wiring points being susceptible to external environmental influences, potentially causing short circuits and other significant safety hazards. Furthermore, the operator only needs to insert the cover into the connecting cylinder and slightly rotate the connecting block to complete the wiring operation.

Description

Technical Field

[0001] This utility model relates to the technical field of resistivity measuring equipment, specifically to a PETG polyester melt resistivity measuring device that is easy to wire. Background Technology

[0002] PETG polyester melt resistivity refers to the electrical resistance of PETG polyester when it is heated above its melting point and becomes molten. Currently, the melt resistivity of PETG polyester is usually measured using melt resistivity measuring equipment.

[0003] However, existing melt resistivity measuring devices typically connect the main body of the device to the storage tray by using a clamp at one end of the connecting wire to directly clamp the storage tray and pressure plate for power supply, or by using a bolt to press one end of the connecting wire and then screwing the bolt into the storage tray and pressure plate. Both methods expose the connection points to the external environment, making them susceptible to environmental influences and prone to short circuits, posing significant safety hazards. Therefore, a PETG polyester melt resistivity measuring device with simplified wiring is proposed. Utility Model Content

[0004] This invention provides a PETG polyester melt resistivity measuring device that is easy to wire, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a PETG polyester melt resistivity measuring device that is easy to connect, including a resistivity measuring device body, the resistivity measuring device body is connected to four connecting wires, one end of the connecting wire away from the resistivity measuring device body is connected to a heating box, a placing tray is placed inside the heating box, a pressure plate is placed inside the placing tray, the pressure plate is detachably connected to one connecting wire through a connecting mechanism, and the placing tray is detachably connected to the other two connecting wires through two connecting mechanisms.

[0006] The connecting mechanism includes a connecting block and a connecting cylinder. The connecting block is hollow, and a rotating block is rotatably connected to the inner wall of the connecting block. The end of the connecting line is fixedly connected to the eccentric part of the rotating block. The connecting line passes through the rotating block and is fixedly connected to a flexible wire. The end of the connecting block away from the connecting line is threadedly connected to the top of the connecting cylinder. A fixing post is fixedly connected to the inner bottom surface of the connecting cylinder.

[0007] Preferably, a cover is fixedly connected to the surface of the connecting block, the flexible wire is located inside the cover, and the lower end of the flexible wire extends to the outside of the cover. A movable block is sleeved on the fixed post, and wire inlet grooves are opened on both sides of the movable block. A first spring is provided between the movable block and the inner bottom surface of the connecting cylinder, and the first spring is sleeved on the fixed post.

[0008] Preferably, a pressure plate is slidably connected to the inner wall of the wire inlet groove, and a pressing rod is fixedly connected to the outer side of the pressure plate. The end of the pressing rod passes through both ends of the moving block and is slidably connected to the moving block.

[0009] Preferably, a second spring is sleeved on the extrusion rod, and the two ends of the second spring are fixedly connected to the moving block and the extrusion rod, respectively.

[0010] Preferably, the inner wall of the connecting cylinder is provided with a groove, the depth of which gradually decreases from top to bottom, and the end of the extrusion rod is slidably connected to the groove.

[0011] Preferably, the inner wall of the connecting cylinder is provided with a spiral groove located below the slide groove, the spiral groove and the slide groove are interconnected, and the end of the extrusion rod is slidably connected to the spiral groove.

[0012] The beneficial effects of this utility model are as follows: (1) This utility model can completely hide the connection point in the connecting tube, thereby avoiding the connection point being exposed to the outside world, which is easily affected by the external environment and causes short circuits and other major safety hazards. At the same time, the operator only needs to insert the cover into the connecting tube and rotate the connecting block slightly to complete the wiring operation, which is relatively convenient and makes the wiring operation highly efficient and safe; (2) By setting the spiral groove, moving block, wire inlet groove, extrusion rod and pressure plate, the flexible wire can be wound on the fixed column, thereby ensuring the smooth completion of the wiring operation and reducing the occurrence of loosening of the flexible wire, which leads to wiring failure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the storage tray of this utility model;

[0015] Figure 3 This is a schematic diagram of the connecting block of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the connecting cylinder of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal structure of the movable block of this utility model.

[0018] Reference numerals in the attached drawings: 1. Main body of resistivity measuring device; 2. Heating box; 3. Placement tray; 4. Connecting wire; 5. Connecting cylinder; 6. Rotating block; 7. Pressure plate; 8. First spring; 9. Fixed column; 10. Slide groove; 11. Spiral groove; 12. Moving block; 13. Extrusion rod; 14. Second spring; 15. Pressure plate; 16. Wire inlet groove; 17. Connecting block; 18. Flexible conductor; 19. Cover. Detailed Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings.

[0020] like Figure 1-5 As shown, this utility model provides a PETG polyester melt resistivity measuring device that is easy to connect. It includes a resistivity measuring device body 1, which is connected to four connecting wires 4. One end of one connecting wire 4 away from the resistivity measuring device body 1 is connected to a heating box 2. A tray 3 is placed inside the heating box 2 to hold the PETG polyester. A pressure plate 7 is placed inside the tray 3. The pressure plate 7 can be used in conjunction with the tray 3 to heat both the upper and lower sides of the PETG polyester, thereby improving the melting efficiency and melting uniformity of the PETG polyester. The pressure plate 7 is detachably connected to one connecting wire 4 through a connecting mechanism. The tray 3 is detachably connected to the other two connecting wires 4 through two connecting mechanisms.

[0021] Taking the connecting mechanism connected to the storage tray 3 as an example, the connecting mechanism includes a connecting block 17 and a connecting cylinder 5. The connecting block 17 is hollow, and a rotating block 6 is rotatably connected to the inner wall of the connecting block 17. The end of the connecting wire 4 is fixedly connected to the eccentric part of the rotating block 6. The connecting wire 4 passes through the rotating block 6 and is fixedly connected to a flexible wire 18. The end of the connecting block 17 away from the connecting wire 4 is threadedly connected to the top of the connecting cylinder 5. The connecting cylinder 5 is made of high-temperature resistant insulating ceramic and is fixedly connected to the storage tray 3. A fixing post 9 is fixedly connected to the inner bottom surface of the connecting cylinder 5 and is connected to the storage tray 3. When the connecting mechanism is connected to the pressure plate 7, the connecting cylinder 5 is fixedly connected to the pressure plate 7, and the fixing post 9 is connected to the pressure plate 7. Specifically, in use, the flexible wire 18 is inserted into the connecting cylinder 5 and connected to the fixing post 9. The connecting cylinder 5 can cover and protect the flexible wire 18, avoiding the situation where the flexible wire 18 is exposed to the outside and is prone to safety hazards.

[0022] In some embodiments, a cover 19 is fixedly connected to the surface of the connecting block 17, the flexible wire 18 is located inside the cover 19, and the lower end of the flexible wire 18 extends to the outside of the cover 19. A movable block 12 is sleeved on the fixed post 9, and inlet grooves 16 are provided on both sides of the movable block 12 to provide insertion space for the flexible wire 18, so as to facilitate the connection between the flexible wire 18 and the fixed post 9. A first spring 8 is provided between the movable block 12 and the inner bottom surface of the connecting cylinder 5. The first spring 8 is sleeved on the fixed post 9 and is used to reset the movable block 12.

[0023] In some embodiments, a pressure plate 15 is slidably connected to the inner wall of the wire inlet groove 16, and a pressing rod 13 is fixedly connected to the outer side of the pressure plate 15. The end of the pressing rod 13 passes through both ends of the moving block 12 and is slidably connected to the moving block 12. A second spring 14 is sleeved on the pressing rod 13, and the two ends of the second spring 14 are fixedly connected to the moving block 12 and the pressing rod 13, respectively. A groove 10 is opened on the inner wall of the connecting cylinder 5, and the depth of the groove 10 gradually decreases from top to bottom. The end of the pressing rod 13 is slidably connected to the groove 10. Specifically, when the moving block 12 drives the pressing rod 13 to slide downward in the groove 10, since the depth of the groove 10 gradually decreases from top to bottom, the inner wall of the groove 10 can press and push the pressing rod 13. The pressing tube pushes the pressure plate 15 to slide in the wire inlet groove 16, so that the pressure plate 15 gradually presses and fixes the flexible wire 18 inserted into the wire inlet groove 16.

[0024] In some embodiments, the inner wall of the connecting cylinder 5 is provided with a spiral groove 11 located below the slide groove 10. The spiral groove 11 is interconnected with the slide groove 10, and the end of the pressing rod 13 is slidably connected to the spiral groove 11. Specifically, when the pressing rod 13 slides into the spiral groove 11, during the continued descent of the moving block 12, the spiral groove 11 drives the pressing rod 13 to move downward along the trajectory of the spiral groove 11, thereby driving the moving block 12 to rotate in the connecting cylinder 5, which in turn drives the flexible wire 18 to rotate synchronously, so that the flexible wire 18 can be spirally wound around the surface of the fixed column 9, thereby ensuring the smooth completion of the wiring operation and reducing the occurrence of the flexible wire 18 loosening and causing wiring failure.

[0025] The specific usage process of this utility model is as follows: When it is necessary to connect the connecting wire 4 to the tray 3 and the pressure plate 7, firstly, the operator can align the connecting block 17 with the connecting cylinder 5 so that the flexible wire 18 is inserted into any one of the wire inlet slots 16, and at the same time, the cover 19 is inserted into the connecting cylinder 5. Then, as the connecting block 17 moves closer to the connecting cylinder 5, the cover 19 can squeeze and push the moving block 12, thereby driving the moving block 12 to descend in the connecting cylinder 5, so that the moving block 12 drives the squeezing rod 13 to slide downward in the slide groove 10. Since the depth of the slide groove 10 gradually becomes shallower from top to bottom, the inner wall of the slide groove 10 can squeeze and push the squeezing rod 13. The squeezing tube pushes the pressure plate 15 to slide in the wire inlet slot 16, so that the pressure plate 15 gradually squeezes and fixes the flexible wire 18 inserted into the wire inlet slot 16, thereby ensuring that the flexible wire 18 can smoothly adhere to the surface of the fixing post 9, ensuring the smooth transmission of current. At the same time, the squeezing rod The movement of 13 stretches the second spring 14, while the moving block 12 compresses the first spring 8 during its descent. Then, as the cover 19 continues to be inserted, the extrusion rod 13 slides into the spiral groove 11. As the moving block 12 continues to descend, the spiral groove 11 drives the extrusion rod 13 to move downward along the trajectory of the spiral groove 11, thereby driving the moving block 12 to rotate in the connecting cylinder 5. This causes the flexible wire 18 to rotate synchronously, allowing the flexible wire 18 to spirally wind around the surface of the fixed post 9. At the same time, the descending cover 19 can cover the wound flexible wire 18, thus preventing the flexible wire 18 from loosening and separating from the fixed post 9. This ensures the stability of the connection between the connecting line 4 and the fixed post 9. Finally, after the cover 19 can no longer be inserted, the connecting block 17 is slightly rotated, causing the connecting block 17 and the connecting cylinder 5 to lock due to the self-locking property of the threads, ensuring the stability of the connection mechanism.

[0026] The above embodiments can be combined with each other.

[0027] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A PETG polyester melt resistivity measuring device with easy wiring, comprising a resistivity measuring device body, four connecting wires connected to the resistivity measuring device body, one end of which, away from the resistivity measuring device body, is connected to a heating box, a placing tray is placed inside the heating box, and a pressure plate is placed inside the placing tray, characterized in that: The pressure plate is detachably connected to a connecting line via a connecting mechanism, and the storage tray is detachably connected to the other two connecting lines via two connecting mechanisms; The connecting mechanism includes a connecting block and a connecting cylinder. The connecting block is hollow, and a rotating block is rotatably connected to the inner wall of the connecting block. The end of the connecting line is fixedly connected to the eccentric part of the rotating block. The connecting line passes through the rotating block and is fixedly connected to a flexible wire. The end of the connecting block away from the connecting line is threadedly connected to the top of the connecting cylinder. A fixing post is fixedly connected to the inner bottom surface of the connecting cylinder.

2. A PETG polyester melt resistivity measuring apparatus for facilitating wiring as claimed in claim 1, wherein: A cover is fixedly connected to the surface of the connecting block. The flexible wire is located inside the cover, and the lower end of the flexible wire extends to the outside of the cover. A movable block is sleeved on the fixed post. Inlet grooves are opened on both sides of the movable block. A first spring is provided between the movable block and the inner bottom surface of the connecting cylinder. The first spring is sleeved on the fixed post.

3. A PETG polyester melt resistivity measuring apparatus for facilitating wiring as claimed in claim 2, wherein: A pressure plate is slidably connected to the inner wall of the wire inlet groove, and a pressing rod is fixedly connected to the outer side of the pressure plate. The end of the pressing rod passes through both ends of the moving block and is slidably connected to the moving block.

4. A PETG polyester melt resistivity measuring apparatus for facilitating wiring as claimed in claim 3, wherein: A second spring is fitted onto the extrusion rod, and the two ends of the second spring are fixedly connected to the moving block and the extrusion rod, respectively.

5. A PETG polyester melt resistivity measuring apparatus for facilitating wiring as claimed in claim 4, wherein: The inner wall of the connecting cylinder is provided with a sliding groove, the depth of which gradually decreases from top to bottom, and the end of the extrusion rod is slidably connected to the sliding groove.

6. A PETG polyester melt resistivity measuring apparatus for facilitating wiring as claimed in claim 5, wherein: The inner wall of the connecting cylinder is provided with a spiral groove located below the slide groove. The spiral groove and the slide groove are interconnected, and the end of the extrusion rod is slidably connected to the spiral groove.

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