Knob testing device

Abstract

The utility model discloses a knob testing device which comprises a torsion testing mechanism for testing a knob and a knob tool for installing the testing knob. The test knob is rotationally connected to the knob tool; the torsion testing mechanism comprises a movable support, a plurality of knob torsion structures matched with the testing knobs are installed on the movable support, each knob torsion structure comprises a motor, and a clamp for twisting the knobs is fixedly installed on an output shaft of each motor; and the pushing structure is used for pushing the movable bracket to move until the clamp locks and clamps the test knob. According to the structural design, the produced knobs are rapidly tested in a simple-to-operate and efficient-to-test mode, so that the production requirements are met. In the testing process, the knob can be automatically tested only by clamping the knob by an operator, so that the manual operation steps are greatly reduced, and the synchronization of knob production and knob testing is realized.

Description

Technical Field

[0001] This utility model belongs to the field of knob testing technology, and in particular relates to a knob testing device. Background Technology

[0002] A knob serves as a bridge for human-machine interaction; when an operator manipulates a knob on a device, they can control the equipment, such as turning it on or adjusting it. A knob operates by twisting, and its main structure includes a knob base, a knob handle integrally formed on the knob base and facing outwards (operated by hand), and a knob rod that engages with the equipment. The knob rod is usually inserted into the rotating structure on the equipment via a plug-in mechanism. By turning the knob handle, the operator rotates the knob, which in turn rotates the rotating structure on the equipment, thus adjusting parameters such as current, temperature, humidity, and voltage.

[0003] The knob is mainly made of plastic (high insulation). However, plastic is different from metal and has a short service life. If it is frequently turned, the plug structure on the knob's torsion bar is prone to wear or breakage, making it impossible to turn the corresponding structure on the equipment.

[0004] Therefore, in actual production, the knobs often need to be tested. The testing principle is as follows: the test knob is rotated at high speed, and a qualified knob is used as a reference. After testing, if the test knob is still undamaged after the specified test time (or number of test rotations), the knob product is qualified. Conversely, if the knob's torsion bar is broken, deformed, or the plug-in structure is broken, the knob is unqualified.

[0005] Therefore, in actual work, multiple batches of processed knobs are often tested simultaneously with qualified knobs to achieve knob testing in a reference manner. Currently, the number of sample knobs selected for testing from the production line is relatively large, thus there is an urgent need for a testing angle with high testing efficiency and simple operation to meet the production and testing needs of the production line. Ensuring that knobs produced in each batch of the production line can be tested quickly and efficiently is crucial for ensuring safe and efficient production in the workshop.

[0006] Otherwise, the inability to quickly test the produced products will lead to the failure to detect equipment malfunctions in a timely manner, resulting in a large number of defective products and significant economic losses.

[0007] However, due to the lack of a simple and efficient testing device in the current workshop testing environment, the production process often requires a lot of time to test several batches of knobs before mass production can continue. Utility Model Content

[0008] Based on the above background, the purpose of this utility model is to provide a knob testing device.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A knob testing device includes a torsion testing mechanism for testing knobs and a knob fixture for installing the test knobs;

[0011] The test knob is connected to the knob fixture.

[0012] The torsion testing mechanism includes a movable support, on which a plurality of knob torsion structures that cooperate with the test knob are mounted. Each knob torsion structure includes a motor, and the output shaft of the motor is fixedly mounted with a clamp for the torsion knob.

[0013] It also includes a push mechanism for moving the movable support to the clamp locking the test knob.

[0014] Preferably, the knob fixture includes a fixture bracket, on which a plurality of rotating connected knobs are fixedly mounted.

[0015] Preferably, the tooling structure includes a fixed support that is fixedly mounted on a tooling bracket;

[0016] The upper limit of the fixed support is rotatably connected to a clamp sleeve; the clamp sleeve and the torsion bar of the knob are connected by a plug-in structure.

[0017] Preferably, the insertion structure includes several protrusions integrally formed on the inner sidewall of the clamp sleeve, with slots formed between adjacent protrusions, and the torsion bar of the test knob is engaged between adjacent slots.

[0018] Preferably, the knob torsion structure includes a mounting base fixedly mounted on the motor output shaft, and the mounting base is detachably mounted with a turntable;

[0019] A pair of snap-fit ​​structures that engage with the torque handles of the test knob are fixedly connected to the turntable.

[0020] Preferably, the snap-fit ​​structure includes a pair of snap-fit ​​strips spaced apart vertically, with a snap-fit ​​groove formed between the snap-fit ​​strips;

[0021] During the test, the limit switch of the test knob is engaged between the slots.

[0022] Preferably, the knob testing device further includes rails spaced apart on both sides;

[0023] The movable support is limited and rolled on the track;

[0024] The tooling bracket is fixedly installed at the end of the track.

[0025] Preferably, the bottom ends of the tooling bracket are respectively fixedly connected to support pads, and the support pads are fixedly installed on the top of the track;

[0026] The bottom ends of the movable bracket are respectively fixedly connected to the mounting bracket, the bottom of the mounting bracket is fixedly connected to the double roller bracket, and the two ends of the double roller bracket are respectively rotatably connected to the push roller.

[0027] The pushing structure includes a cylinder, which pulls the moving bracket to slide until the handle of the test knob engages with the locking strip.

[0028] Preferably, cylinder brackets are fixedly installed on both sides of the top of the tooling bracket, and a cylinder is installed on the top of the cylinder bracket;

[0029] The piston rod of the cylinder is fixedly mounted with a pull rod;

[0030] Pull brackets for fixing drive rods are fixedly installed on both sides of the top of the mobile bracket.

[0031] This utility model has the following beneficial effects:

[0032] 1. A fixture structure with several rotating connecting knobs fixedly mounted on a fixture bracket. Specifically, the fixture structure includes a fixed support fixedly mounted on the fixture bracket; the fixed support is rotatably connected to a clamp sleeve at its upper limit, enabling a certain number of knobs to be simulated for installation and testing according to their usage state during the testing process, making installation more convenient and efficient.

[0033] 2. The torsion testing mechanism includes a movable support, on which several knob torsion structures are mounted to cooperate with the test knob. Each knob torsion structure includes a motor, and the motor's output shaft is fixedly fitted with a fixture for torsion knobs. This simulates the torsion knob process for rotation testing. Because the movable support, knob torsion structures, and fixtures cooperate, the testing efficiency is higher.

[0034] 3. A moving structure, including a cylinder, pulls the moving bracket to roll until the handle of the test knob engages with the locking strip. The advantages of the rolling method are: higher flexibility and less resistance, while traditional slider structures experience increased wear and reduced stability. This method automatically aligns the test motor, mold, and other structures with the test knob during testing, further improving efficiency. After the test knob is installed, most subsequent operations are fully automated, significantly reducing manual labor, increasing efficiency, and shortening testing time. This allows for simultaneous production and testing on-the-fly production lines. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0037] Figure 2 This is one of the structural schematic diagrams of the test knob's handle and clamp sleeve in an embodiment of this utility model;

[0038] Figure 3 This is the second schematic diagram of the structure of the test knob handle and the clamp sleeve in this embodiment of the present utility model;

[0039] Figure 4 This is a schematic diagram of the card strip structure in an embodiment of this utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the limiting rotary seat rotating connection fixed support in the embodiment of this utility model;

[0041] Figure 6 This is a schematic diagram of the structure of a test knob with another torsion handle shape in an embodiment of this utility model;

[0042] Figure 7 This is an embodiment of the present utility model. Figure 1 The right view in the image.

[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0047] Example 1

[0048] like Figure 1-7 As shown, a knob testing device includes a torsion testing mechanism for testing knobs and a knob fixture for mounting the test knobs. During the test, the test knob 4 to be tested is mounted on the knob fixture and rotated through the torsion testing mechanism.

[0049] Specifically, the knob fixture includes a fixture bracket 1, on which a plurality of rotating connected knobs are fixedly mounted. Specifically, the fixture structure 3 includes a fixed support 31 fixedly mounted on the fixture bracket 1.

[0050] The fixed support 31 is rotatably connected to the clamp sleeve 32 at its upper limit; such as Figure 5 As shown, similar to the existing limit rotation connection method, a rotating rod 321 is fixedly connected to the clamp sleeve 32, and a limit rotating seat that limits rotation on the fixed support 31 is fixedly connected to the rotating rod 321. A matching limit rotating groove is opened on the corresponding fixed support 31.

[0051] Meanwhile, the shape of the fixture sleeve 32 is designed to correspond to the torsion bar 42 of the test knob 4. Specifically, the torsion bar 42 of most knobs on the market is inserted into the knob slot on the device through a limiting plug-in structure. Therefore, the fixture sleeve 32 is designed to be inserted into the torsion bar 42 of the knob through a plug-in structure.

[0052] Specifically, the insertion structure includes several protrusions integrally formed on the inner side wall of the clamp sleeve 32 (most existing knobs have protrusion structures, which are inserted into slots on the equipment), and a slot is formed between adjacent protrusions. The torsion bar 42 of the test knob 4 is engaged between adjacent slots 322.

[0053] This method facilitates the installation of the test knob 4. During the test, the operator simply inserts the test knob 4 directly into the corresponding fixture sleeve 32 to complete the installation of the test knob 4.

[0054] This embodiment discloses that the insertion structure on the torsion bar 42 of the test knob 4 is a convex rib. However, in actual operation, the torsion bar 42 of the knob is not only inserted with a convex rib structure. For example, the torsion bar 42 of the test knob 4 can be a hexagon, a triangle, a rectangle, or other shapes in its longitudinal cross section. Correspondingly, the structure of the clamp sleeve 32 can be changed, such as by opening hexagonal grooves, triangular grooves, rectangular grooves, etc. on the clamp sleeve 32.

[0055] Example 2

[0056] like Figure 1-7 As shown, based on the structure of Embodiment 1, the torsion test mechanism includes a movable support 5, and a plurality of knob torsion structures 6 that cooperate with the test knob 4 are installed on the movable support 5. The knob torsion structure 6 includes a motor 61 (the motor 61 is a conventional motor 61 used in existing knob testing), and the output shaft of the motor 61 is fixedly mounted with a clamp for the torsion test knob 4.

[0057] Specifically, the knob torsion structure 6 includes a mounting base 611 fixedly mounted on the output shaft of the motor 61, and the mounting base 611 is detachably mounted with a turntable 62 (specifically fixed by bolts, which allows for replacement).

[0058] The aforementioned turntable 62 is fixedly connected with a pair of snap-fit ​​structures that engage with the handles 41 of the test knob 4. Specifically, most existing knobs have handles 41 that are easy for operators to turn, and the handles 41 are in various shapes such as straight, cross, etc.

[0059] This embodiment discloses a torsion handle 41 in the shape of a straight line.

[0060] Specifically, the snap-fit ​​structure includes a pair of snap-fit ​​strips 63 spaced apart vertically, with a snap-fit ​​groove formed between the snap-fit ​​strips 63;

[0061] During the test, the handle 41 of the test knob 4 is locked in place between the slots.

[0062] In actual operation, to increase the stability of the straight-line torsion handle 41 when it engages with the retaining strip 63, an elastic rib structure 631 is integrally formed on the sidewalls of the retaining strips 63 facing each other, as is the case with existing methods. The elastic rib structure 631 is formed in the following manner:

[0063] An elastic rubber strip is heat-welded onto a rubber clamping strip 63 to form a raised rib structure. The advantage of this method is that, since the test knobs 4 often vary in size, for smaller knobs, the slotted handle 41 often leaves a gap between itself and the clamping strip 63 after being engaged, leading to unstable engagement. Therefore, the raised rib structure effectively solves this problem. Specifically, the deformation of the elastic raised rib structure 631 of the elastic rubber material increases the engagement force (using an elastic raised rib structure to increase engagement stability is a common application of this structure in existing technology). During rotation testing, the test stability is higher.

[0064] In actual operation, since the turntable 62 can be disassembled, a more qualified model of turntable 62 can be replaced, and a corresponding more qualified model of clip 63 can be attached to the handle 41 of the test knob 4.

[0065] Example 3

[0066] like Figure 1-7 As shown, this embodiment is a variation of embodiment 2, and discloses two other types of turntables 62 and snap-fit ​​structures.

[0067] Specifically, when the knob handle 41 is cross-shaped, the corresponding locking strip 63 is designed to be cross-shaped, and the cross-shaped locking strip 63 has a cross-shaped locking groove.

[0068] Similarly, the handle 41 of the test knob 4 often includes not only straight and cross shapes, but also many other shapes such as X.

[0069] Example 4

[0070] like Figure 1-7 As shown, based on the structure of embodiment 3, this embodiment also includes a push structure for pushing the movable bracket 5 to move to the clamp and lock it onto the test knob 4 handle 41 in order to achieve quick snap-fit ​​testing.

[0071] Specifically, the knob testing device also includes rails 2 spaced apart on the left and right sides; more specifically, the movable bracket 5 is limited and rolled on the rails 2; the tooling bracket 1 is fixedly installed at the end of the rails 2.

[0072] Specifically, the bottom ends of the tooling bracket 1 are respectively fixedly connected to the support pads 71, and the support pads 71 ​​are fixedly installed on the top of the track 2; maintaining the height position corresponding to the movable bracket 5, so that when the movable bracket 5 moves close, the locking strip 63 can be smoothly locked into the knob handle 41.

[0073] Meanwhile, mounting brackets 51 are fixedly connected to both ends of the bottom of the movable bracket 5, and a double roller bracket 8 is fixedly connected to the bottom of the mounting bracket 51. Push rollers 81 are rotatably connected to both ends of the double roller bracket 8 (the double roller bracket is rotatably connected to the push rollers in a conventional manner disclosed in the prior art). The pushing structure includes a cylinder 7, which pulls the movable bracket 5 to roll until the handle 41 of the test knob 4 engages with the locking strip 63. The cylinder 7 is a conventional cylinder 7 disclosed in the existing testing process, and its push-pull movement principle is the same as that of existing cylinders 7. The rolling of the movable bracket 5 is achieved through the extension and retraction of the piston rod of the cylinder 7.

[0074] The advantages of using the rolling sliding method are: the rolling sliding method has higher sliding flexibility and less resistance, while the traditional slider sliding structure becomes less stable as wear increases.

[0075] Correspondingly, a guide groove 21 for limiting the rolling drive roller is opened at the top of track 2. The roller rolls in the guide groove.

[0076] The tooling bracket 1 is fixedly installed on both sides of the top, and a cylinder 7 is installed on the top of the cylinder bracket; a drive rod 72 is fixedly installed on the piston rod of the cylinder 7; and a pull seat 72 for fixing the drive rod 72 is fixedly installed on both sides of the top of the movable bracket 5.

[0077] During operation, when cylinder 7 pulls the moving bracket 5 forward until the locking strip 63 engages with the torsion handle 41, the test motor 61 starts working.

[0078] During the testing process, since all the tested motors 61 are of the same model, the operators often judge whether the tested products are qualified based on the test time.

[0079] The specific testing method is a conventional method disclosed in the prior art. The most intuitive method is a control test, where two test knobs 4 are selected from the conveyor belt during the production process, and a qualified knob is selected as a control group. These are then tested for a certain period of time in the manner described above (because the motor 61 model is the same, the number of rotations driven by the motor 61 during the test is approximately the same). For obviously unqualified test knobs 4, during the product testing process, the knobs are very prone to exhibiting problems such as deformation of the torsion handle 41, breakage of the torsion bar 42, and deformation or breakage of the insertion structure (a protruding rib in this invention) on the torsion bar 42.

[0080] This indicates that the knob produced is substandard and the machine needs to be stopped immediately to check for equipment malfunctions, such as whether the temperature sensor of the casting equipment is faulty (in actual operation, product performance may not meet standards due to malfunctions in the casting temperature equipment).

[0081] The above methods are simple to test and highly intuitive, thus they can be flexibly matched to production line testing in the workshop.

[0082] In actual operation, the number of test units can be increased on the movable bracket 5 and tooling bracket 1 as needed (i.e., the number of test stations and test knobs 4 can be increased).

[0083] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A knob testing device, characterized in that, Includes a torsion testing mechanism for testing the knob and a knob fixture for mounting the test knob; The test knob is connected to the knob fixture. The torsion testing mechanism includes a movable support, on which a plurality of knob torsion structures that cooperate with the test knob are mounted. Each knob torsion structure includes a motor, and the output shaft of the motor is fixedly mounted with a clamp for the torsion knob. It also includes a push mechanism for moving the movable support to the clamp locking the test knob.

2. The knob testing device according to claim 1, characterized in that, The knob fixture includes a fixture bracket, on which a plurality of rotating connected knobs are fixedly mounted.

3. The knob testing device according to claim 2, characterized in that, The tooling structure includes a fixed support that is fixedly installed on the tooling bracket; The upper limit of the fixed support is rotatably connected to a clamp sleeve; the clamp sleeve and the torsion bar of the knob are connected by a plug-in structure.

4. The knob testing device according to claim 3, characterized in that, The insertion structure includes several integrally formed protrusions on the inner sidewall of the clamp sleeve, with slots formed between adjacent protrusions, and the torsion bar of the test knob is engaged between adjacent slots.

5. The knob testing device according to claim 2, characterized in that, The knob torsion structure includes a mounting base fixedly installed on the motor output shaft, and a turntable is detachably mounted on the mounting base; A pair of snap-fit ​​structures that engage with the torque handles of the test knob are fixedly connected to the turntable.

6. The knob testing device according to claim 5, characterized in that, The snap-fit ​​structure includes a pair of snap strips spaced vertically apart, with a snap groove formed between the snap strips; During the test, the limit switch of the test knob is engaged between the slots.

7. The knob testing device according to claim 6, characterized in that, The knob testing device also includes rails spaced apart on both sides; The movable support is limited and rolled on the track; The tooling bracket is fixedly installed at the end of the track.

8. The knob testing device according to claim 7, characterized in that, The bottom ends of the tooling bracket are respectively fixedly connected to support pads, and the support pads are fixedly installed on the top of the track; The bottom ends of the movable bracket are respectively fixedly connected to the mounting bracket, the bottom of the mounting bracket is fixedly connected to the double roller bracket, and the two ends of the double roller bracket are respectively rotatably connected to the push roller. The pushing structure includes a cylinder, which pulls the moving bracket to slide until the handle of the test knob engages with the locking strip.

9. The knob testing device according to claim 8, characterized in that, The tooling bracket is fixedly installed on both sides of the top, and a cylinder is installed on the top of the cylinder bracket. The piston rod of the cylinder is fixedly mounted with a pull rod; Pull brackets for fixing drive rods are fixedly installed on both sides of the top of the mobile bracket.

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