Timer test fixture

Abstract

The utility model belongs to the technical field of test fixtures, and particularly relates to a timer test fixture which comprises a test frame. The timers are limited through the placement frame attached to the timers, batch timers can be continuously and automatically tested through cooperation of the ejection mechanism and the rotating transmission rod, the timers can be conveniently taken out, frequent clamping and clamping releasing of the timers are not needed, the batch detection efficiency is improved, and the labor intensity of workers is reduced. A timer corresponding to the placement rack in size is placed in the placement rack, the air cylinder is started to drive the tester to descend to be close to the timer in the placement rack through the driving plate, the transmission rod stops driving the placement rack to rotate, the placement rack moves to the position below the corresponding tester, and the pressing block on the tester makes contact with the timer button; the camera synchronously observes the result on the timer so as to determine the accuracy of the timer, the transmission plate drives the ejection plate to ascend, and the ejection plate penetrates through the ejection groove and ejects the timer in the placement frame located over the ejection groove at the moment.

Description

Technical Field

[0001] This utility model belongs to the field of test fixture technology, specifically a timer test fixture. Background Technology

[0002] A timer is a device that uses specific principles to measure time. Timers are classified in many ways depending on their usage scenarios, such as vehicle timers installed in cars or trains. Before leaving the factory, timers need to be sampled in batches and tested for accuracy using a tester and test fixture.

[0003] Current timer test fixtures typically consist of a test base, an adjustment slot on the top of the test base, a lead screw rotatably connected to the inner wall of the adjustment slot, a limit block threaded to the outer wall of the lead screw, a fixed frame fixedly connected to the top of the test base, an electric telescopic rod fixedly connected to the top of the fixed frame, and a pressing block fixedly connected to the output end of the electric telescopic rod. The test base is connected to the tester via a data cable. The tester is activated to control the electric telescopic rod to move the pressing block up and down within a set time. The time set on the tester is compared with the time set on the timer to confirm the timer's accuracy.

[0004] However, when testing timers in batches, it is necessary to continuously operate the lead screw on the test fixture to control the limit block to clamp and release the timers, which is cumbersome and affects the testing efficiency. Therefore, a timer test fixture is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve the problem that when testing timers in batches, it is necessary to continuously operate the lead screw on the test fixture to control the limit block to clamp and release the timers, which is cumbersome and affects the testing efficiency, a timer test fixture is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The timer test fixture of this utility model includes a test frame, a transmission rod rotatably connected to the inner bottom wall of the test frame, a positioning block fixedly connected to the top end of the transmission rod through the test frame, a placement frame fixedly connected to one side of the positioning block through a positioning plate, a mounting frame fixedly connected to the top of the test frame, a cylinder fixedly connected to the inner top wall of the mounting frame, a tester fixedly connected to the output end of the cylinder through a drive plate, a first gear fixedly connected to the outer wall of the transmission rod, a positioning groove opened on the inner side wall of the mounting frame, a second gear rotatably connected to the inner side wall of the positioning groove through a rotating shaft, and a second rack fixedly connected to the side of the drive plate near the second gear.

[0007] The test frame is equipped with an ejection mechanism, which includes a transmission plate slidably connected within the test frame. The transmission plate has a positioning hole at its top, and an internal gear is fixedly connected to the inner wall of the positioning hole. The internal gear meshes with a first gear. An ejection plate is fixedly connected to the top of the transmission plate. The test frame has an ejection groove adapted to the ejection plate at its top. A first rack is fixedly connected to the top of the transmission plate. The top of a connecting plate penetrates the test frame and is fixedly connected to the bottom of a drive plate. The first rack meshes with a second gear. A placement frame that fits against the timer limits its movement. The ejection mechanism, in conjunction with a rotating transmission rod, continuously and automatically tests batches of timers and facilitates their removal, eliminating the need for frequent clamping and unclamping, thus improving the efficiency of batch testing.

[0008] Preferably, a threaded hole on one side of the placement frame is provided, and a lead screw is threadedly connected to the threaded hole. One end of the lead screw extends into the placement frame and is rotatably connected to an adjusting block. The other end of the lead screw extends out of the threaded hole and communicates with the outside. By setting the adjusting block, it is easy to adapt to the limit requirements of various timers of different sizes and specifications, improve adaptability and reduce testing costs.

[0009] Preferably, a guide rod is fixedly connected to the inner bottom wall of the test frame. The top end of the guide rod passes through the transmission plate and is fixedly connected to the inner top wall of the test frame. The guide rod facilitates the movement and limiting of the transmission plate, preventing the transmission plate from shifting when moving up and down.

[0010] Preferably, the top of the test frame has a discharge port, the inner wall of the discharge port has an installation groove, the inner wall of the installation groove is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod extends into the discharge port and is fixedly connected to a support block. Through the setting of the electric telescopic rod, the support block and the discharge port, it is convenient to cooperate with the tester and the sensor to automatically discharge the timers that do not meet the requirements, without the need to manually remove the timers that do not meet the requirements.

[0011] Preferably, the inner wall of the discharge port is provided with a guide groove, and a guide block is slidably connected in the guide groove. One end of the guide block extends out of the guide groove and is fixedly connected to the support block. The guide block and the guide groove facilitate the support of the support block.

[0012] Preferably, the bottom of the placement rack is provided with an auxiliary groove, and the inner side wall of the auxiliary groove is rotatably connected to a pulley via a rotating shaft. The auxiliary groove and the pulley facilitate the movement of the placement rack and reduce wear caused by the movement of the placement rack.

[0013] Preferably, mounting blocks are fixedly connected to both sides of the test frame, and mounting holes are provided on the top of the mounting blocks. The mounting holes are threaded holes that can be matched with bolts, so that the test frame can be installed and fixed in a designated position by the mounting blocks.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model provides a timer testing fixture. The timer is limited by a placement rack that fits against the timer. The ejection mechanism, in conjunction with a rotating transmission rod, can continuously and automatically test a batch of timers and facilitate the removal of the timers. This eliminates the need for frequent clamping and unclamping of the timers, improving the efficiency of batch testing. The timer of the corresponding size to the placement rack is placed in the placement rack. The start cylinder drives the tester to descend and approach the timer in the placement rack via the drive plate. The transmission rod stops driving the placement rack to rotate. The placement rack moves to below the corresponding tester. The pressing block on the tester contacts the timer button. The camera simultaneously observes the result on the timer to determine its accuracy. The transmission plate drives the ejection plate to rise. The ejection plate passes through the ejection slot and ejects the timer in the placement rack that is now directly above the ejection slot.

[0016] 2. This utility model provides a timer test fixture. By setting the adjustment block, it can easily adapt to the limiting requirements of timers of various sizes and specifications, improve adaptability and reduce testing costs. Timers smaller than the inner diameter of the placement rack can be placed in the placement rack, and the screw can be rotated to move the adjustment block closer to the timer. The limiting components are set in four sets and distributed on the four sides of the placement rack to ensure the limiting and clamping effect on the timer. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is one of the cross-sectional structural diagrams of the test fixture in this utility model;

[0020] Figure 3 This is the second cross-sectional structural diagram of the test fixture of this utility model;

[0021] Figure 4 This is a perspective view of the shelf in this utility model.

[0022] Legend:

[0023] 1. Test frame; 2. Transmission rod; 3. Positioning plate; 4. Placement frame; 5. Mounting frame; 6. Cylinder; 7. Tester; 8. First gear; 9. Ejection mechanism; 91. Transmission plate; 92. Internal gear; 93. First rack; 94. Ejection plate; 95. Second gear; 96. Second rack; 10. Lead screw; 11. Adjusting block; 12. Guide rod; 13. Discharge port; 14. Electric telescopic rod; 15. Guide groove; 16. Pulley; 17. Mounting block. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1-4 This utility model provides a timer test fixture, including a test frame 1. A transmission rod 2 is rotatably connected to the inner bottom wall of the test frame 1. The top end of the transmission rod 2 passes through the test frame 1 and is fixedly connected to a positioning block. A placement frame 4 is fixedly connected to one side of the positioning block through a positioning plate 3. A mounting frame 5 is fixedly connected to the top of the test frame 1. A cylinder 6 is fixedly connected to the inner top wall of the mounting frame 5. A tester 7 is fixedly connected to the output end of the cylinder 6 through a drive plate. A first gear 8 is fixedly connected to the outer wall of the transmission rod 2. A positioning groove is opened on the inner side wall of the mounting frame 5. A second gear 95 is rotatably connected to the inner side wall of the positioning groove through a rotating shaft. A second rack 96 is fixedly connected to the side of the drive plate near the second gear 95.

[0027] The test frame 1 is provided with an ejection mechanism 9, which includes a transmission plate 91 slidably connected in the test frame 1. The top of the transmission plate 91 is provided with a positioning hole, and an internal gear 92 is fixedly connected to the inner side wall of the positioning hole. The internal gear 92 meshes with the first gear 8. The top of the transmission plate 91 is fixedly connected with an ejection plate 94. The top of the test frame 1 is provided with an ejection groove that matches the ejection plate 94. The top of the transmission plate 91 is fixedly connected with a first rack 93. The top end of the connecting plate passes through the test frame 1 and is fixedly connected to the bottom of the drive plate. The first rack 93 meshes with the second gear 95.During operation, a drive frame is fixedly connected to one side of the test rack 1, and a motor is fixedly connected to the inner top wall of the drive frame. The output end of the motor is fixedly connected to the positioning block. The tester 7 is the sum of the tester 7 and camera used in the prior art for testing timers. A controller for receiving signals from the tester 7 is installed on the cylinder 6. The controller controls the start of the cylinder 6. The timer is limited by the placement rack 4 that is in contact with the timer. The ejection mechanism 9, in conjunction with the rotating transmission rod 2, can continuously and automatically test a batch of timers and facilitate the removal of the timers. There is no need to frequently clamp and unclamp the timers, which improves the efficiency of batch testing. That is, the timer corresponding to the size of the placement rack 4 is placed in the placement rack 4. The motor is started, driving the positioning block and transmission rod 2 to rotate. The transmission rod 2, through the positioning plate 3, drives the four equally spaced annular placement racks 4 to rotate at a constant speed. The timing cylinder 6 is activated, driving the tester 7 to descend and approach the timer inside the placement rack 4 via the drive plate. This causes the pressing block on the tester 7, controlled by a hydraulic telescopic rod, to contact the timer's timing button. During this process, the drive plate drives the second rack 96 to descend, and the transmission plate 91 drives the internal gear 92 to descend, causing the internal gear 92 to contact the first gear 8 and, in conjunction with the transmission plate 91, to limit the rotation of the first gear 8. At this point, the transmission rod 2 stops driving the multiple equally spaced annular placement racks 4 to rotate via the positioning plate 3. One of these racks now contains the timer to be tested. The placement rack 4 moves to the bottom of the corresponding tester 7. The pressing block on the tester 7 contacts the timer button, and the camera on the tester 7 simultaneously and automatically observes the result on the timer to determine its accuracy. During this process, the cylinder 6 drives the second rack 96 to descend a certain distance via the drive plate, and then the second rack 96 contacts the first gear 8. At this time, the first gear 8 and the second rack 96 mesh and connect. Then, the second rack 96 drives the first gear 8 to rotate, and the first gear 8 simultaneously drives the first rack 93 to move. The first and second teeth are symmetrically distributed with respect to the second gear 95, so that the first rack 93 drives the transmission plate 91 to rise. When the tester 7 tests the timer to be tested... The transmission plate 91 drives the ejector plate 94 to rise. The ejector plate 94 passes through the ejector slot and ejects the timer in the placement rack 4, which is located directly above the ejector slot, to prevent the timer from being too embedded in the placement rack 4 and difficult to remove. After the timer below the tester 7 is tested, the cylinder 6 is activated, which drives the second rack 96 and the tester 7 to rise and reset via the drive plate. Then, the second gear 95 reverses, and the first rack 93 and the transmission plate 91 descend synchronously, causing the ejector plate 94 to descend synchronously, so that the top of the ejector plate is flush with the top of the test rack 1. The rotation limit on the transmission rod 2 and the placement rack 4 is released, and multiple placement racks 4 continue to rotate. By repeating the above steps, the timer can be tested automatically and continuously.

[0028] Furthermore, such as Figure 1 and Figure 4As shown, a threaded hole is located on one side of the placement frame 4, through which a lead screw 10 is threadedly connected. One end of the lead screw 10 extends into the placement frame 4 and is rotatably connected to an adjusting block 11. The other end of the lead screw 10 extends out of the threaded hole and communicates with the outside. During operation, the adjusting block 11 facilitates the adaptation to the limiting requirements of various timers of different sizes, improving adaptability and reducing testing costs. A timer smaller than the inner diameter of the placement frame 4 can be placed inside the placement frame 4, and the lead screw 10 can be rotated to move the adjusting block 11 closer to the timer. Four sets of limiting components are provided and distributed on the four sides of the placement frame 4 to ensure the limiting and clamping effect on the timer.

[0029] Furthermore, such as Figure 2 As shown, a guide rod 12 is fixedly connected to the inner bottom wall of the test frame 1. The top end of the guide rod 12 passes through the transmission plate 91 and is fixedly connected to the inner top wall of the test frame 1. During operation, the guide rod 12 facilitates the movement and limiting of the transmission plate 91, preventing the transmission plate 91 from shifting when moving up and down.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the top of the test frame 1 has a discharge port 13, and the inner wall of the discharge port 13 has an installation groove. An electric telescopic rod 14 is fixedly connected to the inner wall of the installation groove. The output end of the electric telescopic rod 14 extends into the discharge port 13 and is fixedly connected to a support block. During operation, a controller for receiving signals from the tester 7 is installed in the installation groove. The controller controls the start of the electric telescopic rod 14. The arrangement of the electric telescopic rod 14, the support block, and the discharge port 13 facilitates the automatic discharge of non-compliant timers in conjunction with the tester 7 and the sensor, eliminating the need for manual removal of non-compliant timers. When the detector detects that a timer is non-compliant, it transmits the data to the controller that can receive the data. The controller then controls the start of the electric telescopic rod 14, which moves the support block into the installation groove, removes the support for the timer, and opens the discharge port 13. The timer then falls into the test frame 1 under the action of gravity. A conveyor belt can be passed through the test frame 1 to directly transport the non-compliant timers that have fallen into the test frame 1 away.

[0031] Furthermore, such as Figure 2 and Figure 3 As shown, a guide groove 15 is provided on the inner side wall of the discharge port 13. A guide block is slidably connected in the guide groove 15, and one end of the guide block extends out of the guide groove 15 and is fixedly connected to the support block. During operation, the guide block and the guide groove 15 facilitate support for the support block.

[0032] Furthermore, such as Figure 1 and Figure 4As shown, an auxiliary groove is provided at the bottom of the placement rack 4, and a pulley 16 is rotatably connected to the inner side wall of the auxiliary groove via a pivot. During operation, the auxiliary groove and pulley 16 facilitate the movement of the placement rack 4 and reduce wear caused by the movement of the placement rack 4.

[0033] Furthermore, such as Figure 1 As shown, mounting blocks 17 are fixedly connected to both sides of the test frame 1, and mounting holes are provided on the top of the mounting blocks 17. During operation, the mounting blocks 17 and the mounting holes are designed such that the mounting holes are threaded holes that can be used with bolts, so that the test frame 1 can be installed and fixed in the designated position by means of the mounting blocks 17.

[0034] Working principle: A timer corresponding to the size of the placement rack 4 is placed inside the placement rack 4, and the motor is started to drive the positioning block and transmission rod 2 to rotate. The transmission rod 2 drives the four ring-shaped placement racks 4, which are evenly distributed, to rotate at a uniform speed through the positioning plate 3. At the same time, the cylinder 6 is activated to drive the tester 7 to descend and approach the timer inside the placement rack 4 through the drive plate. This causes the pressing block on the tester 7, controlled by the hydraulic telescopic rod, to abut against the timing button of the timer. During this process, the cylinder 6 drives the second rack 96 to descend a certain distance through the drive plate. After the second rack 96 contacts the first gear 8, the first gear 8 and the second rack 96 mesh and connect. Then the second rack 96 drives... The first gear 8 rotates, synchronously driving the first rack 93 to move. The first and second teeth are symmetrically offset relative to the second gear 95, causing the first rack 93 to lift the transmission plate 91. The transmission plate 91 then lifts the internal gear 92, bringing it into contact with the first gear 8 and cooperating with the transmission plate 91 to limit the rotation of the first gear 8. At this point, the transmission rod 2 stops, driving multiple annularly spaced placement racks 4 to rotate via the positioning plate 3. One of the placement racks 4, containing the timer to be tested, moves to below the corresponding tester 7. The pressing block on the tester 7 contacts the timer button, and the test is completed. The camera on device 7 automatically observes the result on the timer to determine its accuracy. During this process, after cylinder 6 drives the second rack 96 to descend a certain distance via the drive plate, the second rack 96 contacts the first gear 8. At this time, the first gear 8 and the second rack 96 mesh, and then the second rack 96 drives the first gear 8 to rotate. The first gear 8 synchronously drives the first rack 93 to move. The first and second teeth are symmetrically distributed relative to the second gear 95, causing the first rack 93 to drive the transmission plate 91 to rise. When the tester 7 tests the timer to be tested, the transmission plate 91 drives the ejector plate 94 to rise. The timer is pushed out of the placement rack 4, which is located directly above the ejection slot, to prevent it from being too embedded in the placement rack 4 and difficult to remove. After the timer below the tester 7 is tested, the cylinder 6 is activated and the second rack 96 and the tester 7 are driven to rise and reset via the drive plate. Then the second gear 95 reverses, the first rack 93 and the transmission plate 91 descend synchronously, and the ejection plate 94 descends synchronously, so that the top of the ejection plate is flush with the top of the test rack 1. The rotation limit on the transmission rod 2 and the placement rack 4 is released, and multiple placement racks 4 continue to rotate. By repeating the above steps, the timer can be tested automatically and continuously.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A timer test fixture, characterized by: Including test frame (1), the inner bottom wall of test frame (1) is rotatably connected with transmission rod (2), the top end of transmission rod (2) penetrates test frame (1) and is fixedly connected with positioning block, the side surface of positioning block is fixedly connected with placing rack (4) through locating plate (3), the top of test frame (1) is fixedly connected with mounting frame (5), the inner top wall of mounting frame (5) is fixedly connected with air cylinder (6), the output end of air cylinder (6) is fixedly connected with tester (7) through drive plate, the outer wall of transmission rod (2) is fixedly connected with first gear (8); The test frame (1) is provided with an ejection mechanism (9), the ejection mechanism (9) includes a transmission plate (91) slidably connected in the test frame (1), a positioning hole is formed in the top of the transmission plate (91), an internal gear (92) is fixedly connected to the inner side wall of the positioning hole, the internal gear (92) is meshingly connected with the first gear (8), a positioning groove is formed in the inner side wall of the mounting frame (5), a second gear (95) is rotatably connected to the inner side wall of the positioning groove through a rotating shaft, a second rack (96) is fixedly connected to the side surface of the drive plate close to the second gear (95), an ejection plate (94) is fixedly connected to the top of the transmission plate (91), an ejection slot is formed in the top of the test frame (1) and matches the ejection plate (94), a first rack (93) is fixedly connected to the top of the transmission plate (91), the top end of the first rack (93) penetrates the through groove formed in the top of the test frame (1), and the first rack (93) is meshingly connected with the second gear (95).

2. A timer test fixture according to claim 1, wherein: A threaded hole is formed in the side surface of the placing rack (4), and a lead screw (10) is threadedly connected in the threaded hole, one end of the lead screw (10) extends into the placing rack (4) and is rotatably connected with an adjusting block (11), and the other end of the lead screw (10) extends out of the threaded hole and communicates with the outside.

3. A timer test fixture according to claim 2, wherein: The inner bottom wall of the test frame (1) is fixedly connected with a guide rod (12), the top end of the guide rod (12) penetrates the transmission plate (91) and is fixedly connected to the inner top wall of the test frame (1).

4. A timer test fixture according to claim 3, wherein: A discharge port (13) is formed in the top of the test frame (1), an installation groove is formed in the inner side wall of the discharge port (13), an electric telescopic rod (14) is fixedly connected to the inner side wall of the installation groove, and the output end of the electric telescopic rod (14) extends into the discharge port (13) and is fixedly connected with a supporting block.

5. A timer test fixture according to claim 4, wherein: A guide groove (15) is formed in the inner side wall of the discharge port (13), a guide block is slidably connected in the guide groove (15), and one end of the guide block extends out of the guide groove (15) and is fixedly connected with the supporting block.

6. A timer test fixture according to claim 5, wherein: An auxiliary groove is formed in the bottom of the placing rack (4), and a pulley (16) is rotatably connected to the inner side wall of the auxiliary groove through a rotating shaft.

7. A timer test fixture according to claim 6, wherein: Both sides of the test frame (1) are fixedly connected with mounting blocks (17), and mounting holes are formed in the top of the mounting blocks (17).

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