Device for testing tensile strength of injection molded part of printer
By setting up an electric gripper and adjustment mechanism on the printer injection molding tensile strength testing device, the error problem caused by manual tightening is solved, achieving more accurate and efficient test results and ensuring safety.
Patent Information
- Application Number
- CN202511789047.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-02-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing tensile strength testing of injection molded parts, errors and fatigue caused by manually tightening the clamps affect the accuracy and efficiency of test data.
The clamping mechanism, which employs electric grippers and adjustment components, eliminates clamping deviations, reduces human error, and provides safety through a protective mechanism.
It improves the accuracy and consistency of test data, enhances testing efficiency and security, and reduces human error and operator fatigue.
Smart Images
Figure CN121453533A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of printers, and more particularly to a device for testing the tensile strength of injection molded parts from printers. Background Technology
[0002] A printer is a computer output device that converts digital information into physical text or images. Its core lies in the coordinated operation of a sophisticated mechanical structure and electronic control. These mechanical structures, such as the printhead carriage, gears, latches, and housing, are mostly injection-molded parts—polymer components formed through an injection molding process. Their dimensional stability, durability, and tensile strength directly determine the printer's operating accuracy, noise level, and overall lifespan. To ensure that injection-molded parts do not break or deform under long-term stress, tensile strength testing devices for printer injection-molded parts are often used to quantitatively test the parts.
[0003] Currently, when conducting tensile strength tests on printer injection molded parts using testing equipment, operators must manually tighten a flat-push clamp to secure the workpiece. Because batch testing requires frequent and repeated tightening operations, operators are prone to hand fatigue and decreased concentration after prolonged work, making it difficult to accurately control the tightening degree of the clamp. If the tightening force is insufficient, the injection molded part will shift or slip during testing due to inadequate fixation, directly affecting the accuracy of the test data. If the tightening is excessive, it may cause indentations, deformation, or even hidden damage to the contact surface of the injection molded part, not only compromising the integrity of the workpiece but also wasting test samples and increasing production costs. Summary of the Invention
[0004] The present invention aims to at least partially solve one of the technical problems in the above-mentioned technologies.
[0005] Therefore, one objective of this invention is to provide a tensile strength testing device for printer injection molded parts. By setting a clamping mechanism on the testing device, the reliance on the operator's clamping accuracy is reduced, human error is reduced, and the measured tensile strength data is more accurate and reliable. This not only improves the repeatability and consistency of the test results but also improves the testing efficiency.
[0006] To achieve the above objectives, the first aspect of the present invention provides a tensile strength testing device for printer injection molded parts, comprising: a testing device and a clamping mechanism, wherein the clamping mechanism is disposed on the testing device, and the clamping mechanism includes a first electric gripper, a fixing plate, a second electric gripper and an adjusting component, wherein the first electric gripper is mounted on the outer wall of the testing device, a ball rod is fixed on the outer wall of the testing device, the second electric gripper is mounted on the testing device, and the adjusting component is mounted on the testing device.
[0007] In addition, the tensile strength testing device for injection molded parts according to the present invention may also have the following additional technical features:
[0008] Specifically, buffer plates are installed on the grippers of the first and second electric grippers.
[0009] Specifically, the clamping mechanism is connected to an adjustment assembly, which includes a ball rod and a connecting column. The ball rod is installed on the outer wall of the testing device, and one end of the connecting column is rotatably connected to the ball rod.
[0010] Specifically, the outer wall of the second electric gripper is threaded with a bolt, which passes through the outer wall of the second electric gripper and is connected to the fixing block. The fixing block is connected to the other end of the connecting column.
[0011] Specifically, the test device is equipped with a protective mechanism on its exterior. The protective mechanism includes a protective cover, a rotating rod, a protective door, and a locking assembly. The protective cover is installed on the exterior of the test device, the rotating rod is installed on the protective cover, the protective door is fitted onto the outer wall of the rotating rod, and the locking assembly is installed on the outer wall of the protective door.
[0012] Specifically, the protective door has an installation groove, and an observation window is installed in the installation groove.
[0013] Specifically, the testing device is equipped with a handle on the outside, which is installed on the outer wall of the protective door.
[0014] Specifically, the test device has friction patterns on its exterior, which are installed on the outer wall of the handle.
[0015] Specifically, the protective mechanism is connected to a locking assembly, which includes a mounting plate, a first fixing ring, a second fixing ring, a locking pin, a first locking block, and a second locking block. The mounting plate is installed on the outer wall of the protective door, the first fixing ring is installed on the outer wall of the mounting plate, the second fixing ring is installed on the outer wall of the protective cover, the locking pin is slidably connected to the first fixing ring and the second fixing ring, the first locking block is installed on the outer wall of the mounting plate, and the second locking block is installed on the outer wall of the mounting plate.
[0016] Specifically, indicator lights are installed on the outer wall of the testing device.
[0017] Compared with existing technologies, the present invention has the following beneficial effects: The tensile strength testing device for injection molded parts of the present invention, by setting a clamping mechanism on the testing device, eliminates bending stress caused by clamping deviation in the initial stage of testing. This not only reduces the dependence on the operator's clamping accuracy and reduces human error, but also makes the final measured tensile strength data more accurate and reliable, improving the repeatability and consistency of the test results. Simultaneously, the protective mechanism can effectively cope with situations where brittle fracture of the plastic part may occur during testing, or where the plastic part may accidentally slip or even pop out due to insecure clamping, providing reliable safety for the operator. The above design effectively improves testing efficiency and safety.
[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0020] Figure 1 This is a schematic diagram of a printer injection molding part tensile strength testing device according to an embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the clamping mechanism of a printer injection molding part tensile strength testing device according to an embodiment of the present invention;
[0022] Figure 3 A tensile strength testing device for injection molded parts according to an embodiment of the present invention. Figure 2 Enlarged structural diagram at point A in the middle;
[0023] Figure 4 This is a schematic diagram of the structure of a printer injection molding part tensile strength testing device according to an embodiment of the present invention, showing the cooperation between the handle and the friction texture.
[0024] Figure 5 An adjustment assembly for a printer injection molding part tensile strength testing device according to an embodiment of the present invention. Figure 4 Enlarged structural diagram at point B;
[0025] Figure 6 This is a schematic diagram of the protective mechanism structure of a printer injection molding part tensile strength testing device according to an embodiment of the present invention;
[0026] Reference numerals: 1. Testing device; 2. Clamping mechanism; 21. First electric gripper; 22. Fixing plate; 23. Second electric gripper; 24. Buffer plate; 25. Fixing block; 26. Bolt; 3. Adjustment assembly; 31. Ball rod; 32. Connecting column; 4. Protective mechanism; 41. Protective cover; 42. Rotating rod; 43. Protective door; 44. Mounting slot; 5. Handle; 6. Friction texture; 7. Observation window; 8. Indicator light; 9. Engaging assembly; 91. Mounting plate; 92. First fixing ring; 93. Second fixing ring; 94. Locking pin; 95. First locking block; 96. Second locking block. Detailed Implementation
[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0028] A printer injection molding part tensile strength testing device according to an embodiment of the present invention is described below with reference to the accompanying drawings.
[0029] like Figures 1-6 As shown, an embodiment of the present invention provides a tensile strength testing device for printer injection molded parts, comprising: a testing device 1 and a clamping mechanism 2.
[0030] The clamping mechanism 2 is mounted on the testing device 1. The clamping mechanism 2 includes a first electric gripper 21, a fixing plate 22, a second electric gripper 23, and an adjustment assembly 3.
[0031] The first electric gripper 21 is installed on the outer wall of the testing device 1, the fixing plate 22 is fixed on the outer wall of the testing device 1, the second electric gripper 23 is installed on the testing device 1, and the adjustment component 3 is installed on the testing device 1.
[0032] In one embodiment of this application, such as Figure 3 As shown, the clamping mechanism 2 is connected to the adjustment component 3. The adjustment component 3 includes a ball rod 31 and a connecting column 32. The ball rod 31 is installed on the outer wall of the testing device 1, and one end of the connecting column 32 is rotatably connected to the ball rod 31.
[0033] Understandably, the fixing plate 22 is used to fix the ball rod 31.
[0034] Specifically, after the injection molded part is placed into the testing device 1, the operator first activates the second electric gripper 23 via external control. The second electric gripper 23 clamps one side of the injection molded part to be tested. Then, the testing device 1 is activated, and the first electric gripper 21 clamps the other side of the injection molded part to be tested. At this time, the test begins. Under the action of the testing device 1, the first electric gripper 21 continuously pulls the injection molded part. At this time, the connecting column 32 is driven and pulled to a vertical position on the ball rod 31, so that the axis of the injection molded part to be tested is naturally aligned with the direction of the pulling force, eliminating bending stress. After the test is completed, the operator stops the gripper's clamping via external control and removes the injection molded part.
[0035] In one embodiment of this application, such as Figure 3 As shown, the outer wall of the second electric gripper 23 is threaded with a bolt 26. The bolt 26 passes through the outer wall of the second electric gripper 23 and is connected to the fixing block 25. The fixing block 25 is connected to the other end of the connecting column 32.
[0036] Understandably, by rigidly connecting the second electric gripper 23 to the fixing block 25 with bolt 26, the overall structural stability and connection accuracy are improved. This avoids test data deviations caused by structural loosening, ensuring the accuracy and reliability of test results.
[0037] In one embodiment of this application, such as Figure 3 As shown, buffer plates 24 are installed on the grippers of the first electric gripper 21 and the second electric gripper 23.
[0038] Understandably, by setting the buffer plate 24, during the process of the first electric gripper 21 and the second electric gripper 23 closing and clamping the object to be tested, the buffer plate 24 can play a good buffering and protection role, avoid scratches or indentations on the object due to rigid contact or uneven clamping force, make the clamping force distribution more uniform, and reduce the risk of the object slipping or deflecting during the test.
[0039] In one embodiment of this application, such as Figure 6 As shown, the test device 1 is equipped with a protective mechanism 4 on its exterior.
[0040] The protective mechanism 4 includes a protective cover 41, a rotating rod 42, a protective door 43, and a locking assembly 9.
[0041] The protective cover 41 is installed on the outside of the test device 1, the rotating rod 42 is installed on the protective cover 41, the protective door 43 is sleeved on the outer wall of the rotating rod 42, and the locking assembly 9 is installed on the outer wall of the protective door 43.
[0042] In one embodiment of this application, such as Figure 5 As shown, the protective mechanism 4 is connected to the locking component 9.
[0043] The locking assembly 9 includes a mounting plate 91, a first fixing ring 92, a second fixing ring 93, a locking pin 94, a first locking block 95, and a second locking block 96.
[0044] Mounting plate 91 is installed on the outer wall of protective door 43, first fixing ring 92 is installed on the outer wall of mounting plate 91, second fixing ring 93 is installed on the outer wall of protective cover 41, locking pin 94 is slidably connected with first fixing ring 92 and second fixing ring 93, first locking block 95 is installed on the outer wall of mounting plate 91, and second locking block 96 is installed on the outer wall of mounting plate 91.
[0045] It should be noted that the protective cover 41 protects the area around the test device 1.
[0046] Specifically, after the injection molded part is placed into the testing device 1, the operator first pulls the handle 5 to rotate the protective door 43 along the rotating rod 42 to the closed position. Then, the operator pulls the locking pin 94 to disengage it from the second locking block 96. As the operator pulls, the locking pin 94 slides along the inner hole of the first fixing ring 92 and the second fixing ring 93. After the locking pin 94 reaches the second fixing ring 93, the operator places the locking pin 94 on the first locking block 95, at which point the protective door 43 is locked.
[0047] When the test is completed and the protective door 43 needs to be opened, simply pull the locking pin 94 away from the first locking block 95, and then pull the locking pin 94 in the opposite direction to remove it from the second fixing ring 93. After the locking pin 94 is removed from the second fixing ring 93, place the locking pin 94 on the second locking block 96. Then, the staff can pull the handle 5 to make the protective door 43 rotate freely around the rotating rod 42, open the protective door 43, take out the tested injection molded part, and put in the next injection molded part.
[0048] In one embodiment of this application, such as Figure 4 As shown, the protective door 43 has an installation groove 44, and an observation window 7 is installed on the installation groove 44.
[0049] Understandably, by setting up the observation window 7, without opening the protective door 43, staff can visually monitor the entire testing process of the injection molded part from stress and deformation without interfering with the test.
[0050] In one embodiment of this application, such as Figure 4 As shown, the test device 1 is provided with a handle 5 on the outside, and the handle 5 is installed on the outer wall of the protective door 43.
[0051] Understandably, by setting up handle 5, staff can hold handle 5 to pull the protective door 43. When pulling the protective door 43, holding handle 5 makes it easier for staff to exert force with their palms, making it more labor-saving and convenient, and improving the safety and efficiency of the operation.
[0052] In one embodiment of this application, such as Figure 4 As shown, the test device 1 has friction patterns 6 on its exterior, and the friction patterns 6 are installed on the outer wall of the handle 5.
[0053] Understandably, by setting the friction texture 6, the friction between the handle 5 and the worker's hand is increased when the worker pulls the handle 5, making it less likely to fall off and making it easier for the worker to pull the handle 5.
[0054] In one embodiment of this application, such as Figure 1 As shown, indicator lights 8 are installed on the outer wall of the testing device 1.
[0055] Understandably, by setting up indicator light 8, when the testing device 1 completes the test, indicator light 8 will light up, prompting the staff to take out the injection molded part. This effectively connects the testing and loading / unloading process, avoids the waste of waiting time caused by continuous manual inspection, and prevents the safety risks caused by accidentally opening the protective door 43 before the test is completed.
[0056] Working principle: When the injection molded part is placed into the testing device 1, the operator first pulls the handle 5 to rotate the protective door 43 along the rotating rod 42 to the closed position. Then, the operator pulls the locking pin 94 to disengage it from the second locking block 96. As the operator pulls, the locking pin 94 slides along the inner hole of the first fixing ring 92 and the second fixing ring 93. After the locking pin 94 reaches the second fixing ring 93, the operator places the locking pin 94 on the first locking block 95. At this time, the protective door 43 is locked.
[0057] After the protective door 43 is closed, the operator first activates the second electric gripper 23 via external control. The second electric gripper 23 clamps one side of the injection molded part to be tested. Then, the testing device 1 is activated, and the first electric gripper 21 clamps the other side of the injection molded part to be tested. The test then begins. Under the action of the testing device 1, the first electric gripper 21 continuously pulls the injection molded part. At this time, the connecting column 32 is driven and pulled to a vertical position on the ball rod 31, so that the axis of the injection molded part to be tested is naturally aligned with the direction of the pulling force, eliminating bending stress. After the test is completed, the operator stops the gripper's clamping via external control and removes the injection molded part.
[0058] When the test is completed and the protective door 43 needs to be opened, simply pull the locking pin 94 away from the first locking block 95, and then pull the locking pin 94 in the opposite direction to remove it from the second fixing ring 93. After the locking pin 94 is removed from the second fixing ring 93, place the locking pin 94 on the second locking block 96. Then, the staff can pull the handle 5 to make the protective door 43 rotate freely around the rotating rod 42, open the protective door 43, take out the tested injection molded part, and put in the next injection molded part.
[0059] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A device for testing the tensile strength of injection molded parts, characterized in that, include: The test device (1) and the clamping mechanism (2) are disposed on the test device (1). The clamping mechanism (2) includes a first electric gripper (21), a fixing plate (22), a second electric gripper (23), and an adjustment component (3). The first electric gripper (21) is installed on the outer wall of the test device (1), the fixing plate (22) is fixed on the outer wall of the test device (1), the second electric gripper (23) is installed on the test device (1), and the adjustment component (3) is installed on the test device (1).
2. The tensile strength testing device for printer injection molded parts according to claim 1, characterized in that, The first electric gripper (21) and the second electric gripper (23) are equipped with buffer plates (24).
3. The tensile strength testing device for printer injection molded parts according to claim 1, characterized in that, The clamping mechanism (2) is connected to an adjustment component (3), which includes a ball rod (31) and a connecting column (32). The ball rod (31) is installed on the outer wall of the test device (1), and one end of the connecting column (32) is rotatably connected to the ball rod (31).
4. The tensile strength testing device for printer injection molded parts according to claim 1, characterized in that, The outer wall of the second electric gripper (23) is threaded with a bolt (26). The bolt (26) passes through the outer wall of the second electric gripper (23) and is connected to the fixing block (25). The fixing block (25) is connected to the other end of the connecting column (32).
5. The tensile strength testing device for printer injection molded parts according to claim 1, characterized in that, The test device (1) is provided with a protective mechanism (4) on its exterior. The protective mechanism (4) includes a protective cover (41), a rotating rod (42), a protective door (43), and a locking assembly (9). The protective cover (41) is installed on the exterior of the test device (1), the rotating rod (42) is installed on the protective cover (41), the protective door (43) is sleeved on the outer wall of the rotating rod (42), and the locking assembly (9) is installed on the outer wall of the protective door (43).
6. The tensile strength testing device for printer injection molded parts according to claim 5, characterized in that, The protective door (43) is provided with an installation groove (44), and an observation window (7) is installed on the installation groove (44).
7. The tensile strength testing device for printer injection molded parts according to claim 5, characterized in that, The test device (1) is provided with a handle (5) on the outside, and the handle (5) is installed on the outer wall of the protective door (43).
8. The tensile strength testing device for printer injection molded parts according to claim 7, characterized in that, The test device (1) is provided with friction texture (6) on the outside, and the friction texture (6) is installed on the outer wall of the handle (5).
9. The tensile strength testing device for printer injection molded parts according to claim 5, characterized in that, The protective mechanism (4) is connected to a locking assembly (9), which includes a mounting plate (91), a first fixing ring (92), a second fixing ring (93), a locking pin (94), a first locking block (95), and a second locking block (96). The mounting plate (91) is installed on the outer wall of the protective door (43), the first fixing ring (92) is installed on the outer wall of the mounting plate (91), the second fixing ring (93) is installed on the outer wall of the protective cover (41), the locking pin (94) is slidably connected to the first fixing ring (92) and the second fixing ring (93), the first locking block (95) is installed on the outer wall of the mounting plate (91), and the second locking block (96) is installed on the outer wall of the mounting plate (91).
10. The tensile strength testing device for printer injection molded parts according to claim 1, characterized in that, The outer wall of the test device (1) is equipped with indicator lights (8).