CN111707306A

CN111707306A - Encoder test machine

Info

Publication number: CN111707306A
Application number: CN202010710229.XA
Authority: CN
Inventors: 洪金镳; 蓝玉华; 贾圆圆; 晏灵军
Original assignee: GUANGDONG SHENGWEI ELECTRONIC PRODUCTS Ltd
Current assignee: GUANGDONG SHENGWEI ELECTRONIC PRODUCTS Ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-09-25

Abstract

The invention discloses an encoder testing machine, which comprises a conveying device, an upper testing die and a lower testing die, wherein the upper testing die is arranged on the conveying device; the encoder is arranged in the positioning die holder, when the encoder moves to the wave band detection position, the upper testing die on one side of the conveying device fixes the encoder in the positioning die holder and puts the second probe into contact with the terminal pin of the encoder, the shaft head sandwich device of the lower testing die clamps the button of the encoder, and the first rotating device drives the button to rotate to detect. The invention provides an encoder testing machine which can be used for detecting wave bands of an encoder provided with a button.

Description

Encoder test machine

Technical Field

The invention relates to the field of encoder testing, in particular to an encoder testing machine.

Background

An encoder is a device that compiles, converts, and/or formats signals or data into a form of signals that can be communicated, transmitted, and stored.

The existing encoder waveform detection device drives a disc to rotate through a motor, and the disc drives a code disc of an encoder to rotate, so that waveform analysis is carried out on the encoder. The encoder shown in fig. 10 has a terminal pin at one end and a button at the other end, and the encoder in fig. 10 can adjust the variation of the output waveform by rotating the button a. There is no apparatus for waveform detection of such an encoder provided with a button on the market today.

Disclosure of Invention

The invention aims to provide an encoder testing machine, which realizes the purpose of detecting the waveform of an encoder provided with a button.

In order to achieve the purpose, the invention adopts the following technical scheme:

an encoder test machine comprises a rack, wherein a waveform test device, a conveying device and a detection system are arranged on the rack:

the conveying device is provided with a plurality of positioning die holders loaded with encoders, the positioning die holders are fixedly connected with the conveying device and used for positioning the encoders, and the positioning die holders are provided with through holes for the buttons of the encoders to pass through;

the waveform testing device comprises an upper testing die and a lower testing die, and the upper testing die and the lower testing die are correspondingly arranged on two opposite sides of the conveying device;

the testing upper die comprises an electric clamp for clamping the encoder and a first lifting device for driving the electric clamp to lift; the electric clamp is provided with a first probe electrically connected with the detection system;

the test lower die comprises an axis chuck device for clamping the button, a first rotating device for driving the axis chuck device to rotate and a second lifting device for driving the first rotating device to lift;

after the encoder is in place, the first lifting device drives the electric clamp to move downwards, the electric clamp clamps the encoder, and the first probe is communicated with a terminal pin of the encoder; meanwhile, the second lifting device drives the axis chuck device to move upwards and the axis chuck device clamps the button, and the first rotating device drives the button to rotate around the axis of the button.

Optionally, the second lifting device includes a supporting frame fixedly connected to the frame, a sliding platform slidably disposed on a guide post of the supporting frame, and a second driving device for driving the sliding platform to lift along the guide post, the first rotating device is fixedly connected to the sliding platform, and the second driving device is fixedly connected to the supporting frame;

the axis chuck device comprises a third lifting device fixedly connected with the support frame, a push plate fixedly connected with a telescopic rod of the third lifting device, a clamping cylinder fixedly connected with the push plate, and elastic clamping claws arranged in through holes of the clamping cylinder in a sliding manner, wherein a plurality of separated clamping claws are arranged at one end, close to the upper test die, of the elastic clamping claws, and the separated clamping claws form an inverted cone-shaped hollow structure;

the elastic clamping claw is rotatably connected with the supporting frame, and one end, far away from the upper test die, of the elastic clamping claw is in transmission connection with a rotating shaft of the first rotating device; the aperture of one end of the clamping cylinder close to the test upper die is not larger than the maximum outer diameter of the inverted cone-shaped hollow structure of the elastic clamping claw.

Optionally, the upper die for testing further comprises a slide rail fixedly connected with the frame and a first driving device, the first lifting device is arranged on the slide rail in a sliding mode, the first driving device is used for driving the first lifting device to move back and forth along the slide rail, and a qualified bin and an unqualified bin are arranged below the slide rail.

Optionally, the pressing force detection device further comprises a pressing force detection device, the pressing force detection device comprises an upper pressing device, a lower pressing device and a lateral detection device, the upper pressing device comprises a first pressing block used for pressing the encoder on the positioning die holder and a fourth lifting device used for driving the first pressing block to lift, the lower pressing device comprises a pressure sensor used for pressing the button and a fifth lifting device used for driving the pressure sensor to lift, the lateral detection device comprises a transverse driving device and a second probe, the second probe is used for connecting the encoder and a detection system, the transverse driving device is used for driving the second probe to transversely move back and forth, and the upper pressing device, the lower pressing device and the lateral detection device are fixedly connected with the rack.

Optionally, the stroke testing device further comprises a stroke testing device, the stroke testing device comprises a mounting frame, a gear rotatably arranged on the mounting frame, a rack arranged on the mounting frame and meshed with the gear, a stroke testing cylinder and a ranging encoder connected with the gear and used for detecting the ascending stroke of a telescopic rod of the stroke testing cylinder, the telescopic rod of the stroke testing cylinder is fixedly connected with the rack, and the telescopic rod of the stroke testing cylinder is used for pressing a button of the encoder;

and a second compression block is further arranged on the fourth lifting device, and when the first compression block compresses the encoder to be subjected to the pressing force detection, the second compression block compresses the encoder to be subjected to the stroke test.

Optionally, the conveying device comprises a chain wheel, a conveying chain arranged on the chain wheel and a third driving device for driving the conveying chain to run;

the positioning die holder is fixedly connected with a chain link of the conveying chain;

the third driving device drives the conveying chain to move intermittently through a divider, and the distance of one-time movement of the conveying chain is equal to the center distance of two adjacent positioning die holders;

the testing upper die and the testing lower die are correspondingly arranged on two opposite sides of the conveying chain.

Optionally, the device further comprises an empty mold detection device, wherein the empty mold detection device comprises a detection bracket, a stop block rotatably arranged on the detection bracket, and a proximity switch arranged in a staggered manner with the stop block; when the stop block is pushed above the proximity switch by the encoder of the positioning die holder, the proximity switch outputs a signal to the detection system.

Optionally, still include defective products extracting device, defective products extracting device including be used for the centre gripping encoder clamping device, with clamping device fixed connection's slide, drive the ejection of compact drive arrangement that the slide goes up and down, ejection of compact drive arrangement rotates with the frame to be connected, the slide is equipped with the gyro wheel, set up the deflector in the frame, the deflector is equipped with the confession the rolling spout that deflects of gyro wheel.

Optionally, the test upper die is provided with at least two electric clamps in parallel, and the test lower die is provided with at least two axis chuck devices corresponding to the electric clamps.

Optionally, the conveyor is located between the conforming bin and the non-conforming bin.

Compared with the prior art, the invention has the following beneficial effects: the encoder testing machine provided by the embodiment of the invention comprises a conveying device, a testing upper die and a testing lower die; the encoder is arranged in the positioning die holder, when the encoder moves to the wave band detection position, the upper die for testing on one side of the conveying device fixes the encoder in the positioning die holder and connects the first probe with the terminal pin of the encoder, the shaft head sandwich device of the lower die for testing clamps the button of the encoder, and the first rotating device drives the button to rotate so as to carry out pulse waveform detection on the encoder. The invention provides an encoder testing machine which can detect pulse waveforms of an encoder provided with a button.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.

Fig. 1 is a schematic structural diagram of an encoder tester according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a test upper die according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of position C of FIG. 2;

fig. 4 is a schematic structural diagram of a testing lower die according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an encoder tester according to an embodiment of the present invention, with a portion of the frame removed;

FIG. 6 is an enlarged schematic view of position A of FIG. 5;

FIG. 7 is a schematic structural diagram of a conveying apparatus according to an embodiment of the present invention;

FIG. 8 is an enlarged schematic view of position B of FIG. 7;

fig. 9 is a schematic structural diagram of a defective product taking device according to an embodiment of the present invention;

FIG. 10 is a block diagram of an encoder according to one embodiment of the present invention.

Illustration of the drawings:

the test device comprises a rack 100, a deflection plate 101, a deflection chute 1011, a waveform test device 1, an upper test die 11, an electric clamp 111, a first lifting device 112, a first probe 113, a slide rail 114, a first driving device 115, a lower test die 12, an axial chuck device 121, a third lifting device 1211, a push plate 1212, a clamping cylinder 1213, an elastic clamping claw 1214, a first rotating device 122, a second lifting device 123, a support 1231, a second driving device 1232, a sliding platform 124, a conveying device 2, a positioning die holder 20, a conveying chain 21, a third driving device 22, a divider 23, an empty die detection device 24, a detection bracket 241, a stop block 242, a pressing force degree detection device 3, an upper pressing device 31, a pressing block 311, a fourth lifting device 312, a second pressing block 313, a lower pressing device 32, a pressure sensor 321, a fifth lifting device 322, a lateral detection device 33, a transverse driving device 331, a lateral driving device, a lateral lifting device 112, a first lifting, And the second probe 332, the mounting frame 41, the rack 43, the stroke testing cylinder 44, the ranging encoder 45, the defective product taking device 5, the clamping device 51, the sliding plate 52, the discharging driving device 53 and the roller 521.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 to 9, an embodiment of the present invention provides an encoder testing machine, which includes a rack 100, a waveform testing device disposed on the rack 100, a conveying device 2, and a detecting system, and is configured to perform waveform detection on an encoder having a button at one end and a terminal pin at the other end. Specifically, the shape of the encoder is as shown in fig. 10.

In the embodiment of the invention, the conveying device 2 is used for intermittently and linearly conveying the positioning die holder 20 to the waveform testing device, the positioning die holder 20 is fixedly connected with a certain chain link of a conveying chain 21 in the conveying device 2, the positioning die holder 20 is equidistantly arranged on the conveying chain 21, the positioning die holder 20 is used for positioning an encoder, and the positioning die holder 20 is provided with a through hole for a button of the encoder to pass through.

The waveform testing device comprises an upper testing die 11 and a lower testing die 12, wherein the upper testing die 11 is positioned on the upper side of a conveying chain 21 of the conveying device 2, and the lower testing die 12 is positioned on the lower side of the conveying chain 21.

The testing upper die 11 comprises an electric fixture 111 for fixing the encoder and a first lifting device 112 for driving the electric fixture 111 to lift, and the electric fixture 111 is provided with a first probe 113 for connecting a terminal pin of the encoder and a detection system;

the testing upper die 11 comprises an electric fixture 111 for fixing the encoder and a first lifting device 112 for driving the electric fixture 111 to lift, and the electric fixture 111 is provided with a terminal pin for connecting the encoder and a first probe 113 of the detection system. It should be understood that the terminal pins herein refer to the terminal pins associated with the emission of the pulses. The testing lower die 12 includes an axial chuck device 121 for clamping the button, a first rotating device 122 for driving the axial chuck device 121 to rotate, and a second lifting device 123 for driving the first rotating device 122 to lift.

It should be noted that the position of the lower testing mold 12 corresponds to the position of the upper testing mold 11, and the correspondence here means that the upper testing mold 11 can fix the encoder on the positioning mold base 20 and the first probe 113 can contact the terminal pin of the encoder when the lower testing mold clamps the button of the encoder.

The upper testing die 11 fixes the encoder and is connected with a testing circuit, the lower testing die 12 adjusts the pulse waveform sent by the encoder by driving the button to rotate, and the detecting system receives the waveform signal and judges whether the encoder detected at present is qualified.

Specifically, the second lifting device 123 includes a support 1231 fixedly connected to the frame 100, a sliding platform 124 slidably disposed on the guide post of the support 1231, and a second driving device 1232 for driving the sliding platform 124 to lift along the guide post, wherein the first rotating device 122 is fixedly connected to the sliding platform 124, and the second driving device 1232 is fixedly connected to the support 1231.

The axial chuck device 121 includes a third lifting device 1211 fixedly connected to the support 1231, a push plate 1212 fixedly connected to an expansion link of the third lifting device 1211, a clamping cylinder 1213 fixedly connected to the push plate 1212, and an elastic clamping jaw 1214 slidably disposed in a through hole of the clamping cylinder 1213, wherein a plurality of spaced jaws are disposed at one end of the elastic clamping jaw 1214 close to the upper test mold 11, and the jaws form an inverted cone-shaped hollow structure. The third lifting device 1211 drives the push plate 1212 to move upwards, the clamping cylinder 1213 moves upwards along with the push plate 1212, and the clamping cylinder 1213 contacts the inverted cone-shaped hollow structure of the clamping jaws and pushes the clamping jaws to close to the hollow parts of the clamping jaws, so that the clamping jaws clamp the button. When the button needs to be clamped, the third lifting device 1211 drives the push plate 1212 to be lifted to the clamping position; when the button needs to be released, the third lifting device 1211 drives the push plate 1212 to descend, i.e., the button is released.

The elastic clamping jaw 1214 is rotatably connected with the supporting frame 1231, a driven gear is arranged at one end of the elastic clamping jaw 1214 away from the upper die 11, a driving gear is arranged at one end of a rotating shaft of the first rotating device 122 close to the driven gear, the driving gear is meshed with the driven gear, and the rotating shaft of the first rotating device 122 rotates to drive the elastic clamping jaw 1214 to rotate.

It should be noted that the diameter of the end of the chucking cylinder 1213 near the test upper die 11 is not larger than the maximum outer diameter of the reverse-tapered hollow structure of the elastic clamping claws 1214 so that the chucking cylinder 1213 is pushed to approach the hollow thereof to clamp the push button when moving upward.

The upper test die 11 further comprises a slide rail 114 fixedly connected with the frame 100 and a first driving device 115, the first lifting device 112 is slidably disposed on the slide rail 114, the first driving device 115 is used for driving the first lifting device 112 to reciprocate along the slide rail 114, and a qualified bin and an unqualified bin are disposed below the slide rail 114. In this embodiment, the qualified bin is disposed on the left side of the conveying chain 21, and the unqualified bin is disposed on the right side of the conveying chain 21. In the embodiment, the plurality of electric clamps 111 are arranged in parallel, and when a part of unqualified products exist in the encoders clamped by the plurality of electric clamps 111 in the detection process, the first driving device 115 can drive the first lifting device 112 to move to the position above the qualified bin to place the qualified products into the qualified bin, and then drive the first lifting device 112 to move to the position above the unqualified bin to drop the unqualified products into the unqualified bin. The arrangement of the sliding rail 114 and the first driving device 115 can accelerate the discharging speed, avoid the situation that the manual blanking speed is slow, and improve the production efficiency.

The encoder testing machine further comprises a pressing strength detection device 3, the pressing strength detection device 3 comprises an upper pressing device 31, a lower pressing device 32 and a lateral detection device 33, the upper pressing device 31 comprises a first pressing block 311 used for pressing the encoder on the positioning die holder 20 and a fourth lifting device 312 used for driving the first pressing block 311 to lift, the lower pressing device 32 comprises a pressure sensor 321 used for pressing the button and a fifth lifting device 322 used for driving the pressure sensor 321 to lift, the lateral detection device 33 comprises a transverse driving device 331 and a second probe 332, the second probe 332 is used for connecting the encoder and the detection system, the transverse driving device 331 is used for driving the second probe 332 to transversely move back and forth, and the upper pressing device 31, the lower pressing device 32 and the lateral detection device 33 are all fixedly connected with the rack 100.

It should be appreciated that the second probe 332 is connected to a terminal pin that is not related to the band test.

The encoder testing machine further comprises a stroke testing device, wherein the stroke testing device comprises a mounting frame 41, a gear rotatably arranged on the mounting frame 41, a rack 43 arranged on the mounting frame 41 and meshed with the gear, a stroke testing cylinder 44 and a distance measuring encoder 45 connected with the gear and used for detecting the ascending stroke of a telescopic rod of the stroke testing cylinder 44, the telescopic rod of the stroke testing cylinder 44 is fixedly connected with the rack 43, and the telescopic rod of the stroke testing cylinder 44 is used for pressing a button of the encoder; the fourth lifting device 312 is further provided with a second pressing block 313, and when the first pressing block 311 presses the encoder to be subjected to the pressing force detection, the second pressing block 313 presses the encoder to be subjected to the stroke test.

The stroke testing device is mainly used for detecting whether the pressing stroke of the button meets the design requirement. The telescopic rod of the stroke test cylinder 44 can drive the gear meshed with the rack 43 to rotate in the stroke test process, so that the distance measuring encoder can detect the extension height of the cylinder extension rod. The distance measuring encoder 45 records the position of the pressing portion of the stroke test cylinder 44 when contacting the button and the position of the highest position of the pressing portion of the test cylinder 44, and sends a signal to the detection system, and the detection system judges whether the pressing stroke of the currently detected encoder is within a qualified pressing stroke range.

In the embodiment, the conveying device 2 includes a sprocket, a conveying chain 21 disposed on the sprocket, and a third driving device 22 for driving the conveying chain 21 to operate; the third driving device 22 drives the conveying chain 21 to move intermittently through the divider 23, and the distance of one movement of the conveying chain 21 is equal to the center distance between two adjacent positioning die holders 20.

The encoder testing machine further comprises an empty mold detection device 24, wherein the empty mold detection device 24 comprises a detection support 241, a stop block 242 rotatably arranged on the detection support 241 and a proximity switch arranged in a staggered mode with the stop block 242; when the stop block 242 is pushed to the upper side of the proximity switch by the encoder of the positioning die holder 20, the proximity switch outputs a signal to the detection system, the detection system drives the audible and visual alarm device to send out an alarm signal, and a worker receives the alarm signal and then takes out and processes the encoder tightly clamped to the positioning die holder 20.

The encoder testing machine further comprises a defective product taking device 5, the defective product taking device 5 comprises a clamping device 51 used for clamping the encoder, a sliding plate 52 fixedly connected with the clamping device 51 and a discharging driving device 53 driving the sliding plate 52 to ascend and descend, the discharging driving device 53 is rotatably connected with the rack 100 through a rotating shaft, the sliding plate 52 is provided with a roller 521, the rack 100 is provided with a deflection plate 101, the deflection plate 101 is provided with a deflection chute 1011 for the roller 521 to roll, and the defective product taking device 5 and the waveform testing device are sequentially arranged in the conveying direction of the encoder. When the discharge driving device 53 drives the sliding plate 52 to ascend, the roller 521 on the sliding plate 52 rolls along the deflection groove 1011, the sliding plate 52 gradually inclines outwards along with the movement of the roller, finally the clamping device 51 is conveyed to the upper part of the defective material box, and the defective encoder is thrown into the defective material box by the clamping device 51. The defective product taking device 5 in the embodiment can complete discharging only by one driving device, so that the cost of the defective product taking device 5 is greatly reduced.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An encoder tester comprises a rack (100), and is characterized in that a waveform testing device, a conveying device (2) and a detection system are arranged on the rack (100):

the conveying device (2) is provided with a plurality of positioning die holders (20) loaded with encoders, the positioning die holders (20) are fixedly connected with the conveying device (2), the positioning die holders (20) are used for positioning the encoders, and the positioning die holders (20) are provided with through holes for the buttons of the encoders to pass through;

the waveform testing device comprises an upper testing die (11) and a lower testing die (12), wherein the upper testing die (11) and the lower testing die (12) are correspondingly arranged on two opposite sides of the conveying device (2);

the testing upper die (11) comprises an electric clamp (111) for clamping the encoder and a first lifting device (112) for driving the electric clamp (111) to lift; a first probe (113) electrically connected with the detection system is arranged on the electric clamp (111);

the testing lower die (12) comprises an axis chuck device (121) for clamping the button, a first rotating device (122) for driving the axis chuck device (121) to rotate, and a second lifting device (123) for driving the first rotating device (122) to lift;

after the encoder is in place, the first lifting device (112) drives the electric clamp (111) to move downwards, the electric clamp (111) clamps the encoder, and the first probe (113) is communicated with a terminal pin of the encoder; meanwhile, the second lifting device (123) drives the axis chuck device (121) to move upwards and the axis chuck device (121) clamps the button, and the first rotating device (122) drives the button to rotate around the axis of the button.

2. The encoder testing machine according to claim 1, wherein the second lifting device (123) comprises a supporting frame (1231) fixedly connected to the frame (100), a sliding platform (124) slidably disposed on a guide post of the supporting frame (1231), and a second driving device (1232) for driving the sliding platform (124) to lift along the guide post, the first rotating device (122) is fixedly connected to the sliding platform (124), and the second driving device (1232) is fixedly connected to the supporting frame (1231);

the axial center chuck device (121) comprises a third lifting device (1211) fixedly connected with the support frame (1231), a push plate (1212) fixedly connected with a telescopic rod of the third lifting device (1211), a clamping cylinder (1213) fixedly connected with the push plate (1212), and an elastic clamping claw (1214) slidably arranged in a through hole of the clamping cylinder (1213), wherein one end, close to the upper test die (11), of the elastic clamping claw (1214) is provided with a plurality of separated clamping claws, and the plurality of separated clamping claws form an inverted cone-shaped hollow structure;

the elastic clamping claw (1214) is rotatably connected with the supporting frame (1231), and one end, away from the upper test die (11), of the elastic clamping claw (1214) is in transmission connection with a rotating shaft of the first rotating device (122); the hole diameter of one end, close to the test upper die (11), of the clamping cylinder (1213) is not larger than the maximum outer diameter of the inverted cone-shaped hollow structure of the elastic clamping claw (1214).

3. The encoder testing machine as claimed in claim 1, wherein the upper test die (11) further comprises a slide rail (114) fixedly connected with the frame (100) and a first driving device (115), the first lifting device (112) is slidably disposed on the slide rail (114), the first driving device (115) is configured to drive the first lifting device (112) to reciprocate along the slide rail (114), and a qualified bin and a unqualified bin are disposed below the slide rail (114).

4. The encoder testing machine as claimed in claim 1, further comprising a pressing force detection device (3), wherein the pressing force detection device (3) comprises an upper pressing device (31), a lower pressing device (32) and a lateral detection device (33), the upper pressing device (31) comprises a first pressing block (311) for pressing the encoder onto the positioning die holder (20) and a fourth lifting device (312) for driving the first pressing block (311) to lift, the lower pressing device (32) comprises a pressure sensor (321) for pressing a button and a fifth lifting device (322) for driving the pressure sensor (321) to lift, the lateral detection device (33) comprises a transverse driving device (331) and a second probe (332), and the second probe (332) is used for connecting the encoder and the detection system, the transverse driving device (331) is used for driving the second probe (332) to transversely move back and forth, and the upper pressing device (31), the lower pressing device (32) and the lateral detection device (33) are fixedly connected with the rack (100).

5. The encoder testing machine as claimed in claim 4, further comprising a stroke testing device, wherein the stroke testing device comprises a mounting frame (41), a gear rotatably arranged on the mounting frame (41), a rack (43) arranged on the mounting frame (41) and engaged with the gear, a stroke testing cylinder (44), and a distance measuring encoder (45) connected with the gear and used for detecting the ascending stroke of a telescopic rod of the stroke testing cylinder (44), the telescopic rod of the stroke testing cylinder (44) is fixedly connected with the rack (43), and the telescopic rod of the stroke testing cylinder (44) is used for pressing a button of the encoder;

the fourth lifting device (312) is further provided with a second pressing block (313), and when the first pressing block (311) presses the encoder to be subjected to pressing force detection, the second pressing block (313) presses the encoder to be subjected to stroke testing.

6. The encoder testing machine according to claim 1, wherein the conveying device (2) comprises a sprocket, a conveying chain (21) arranged on the sprocket, and a third driving device (22) for driving the conveying chain (21) to run;

the positioning die holder (20) is fixedly connected with a chain link of the conveying chain (21);

the third driving device (22) drives the conveying chain (21) to move intermittently through a divider (23), and the distance of one-time movement of the conveying chain (21) is equal to the center distance of two adjacent positioning die holders (20);

the test upper die (11) and the test lower die (12) are correspondingly arranged on two opposite sides of the conveying chain (2).

7. The encoder testing machine as recited in claim 6, further comprising an empty mold detection device (24), wherein the empty mold detection device (24) comprises a detection bracket (241), a stop block (242) rotatably disposed on the detection bracket (241), and a proximity switch disposed in a staggered manner with respect to the stop block (242); when the stop block (242) is pushed above the proximity switch by an encoder of the positioning die holder (20), the proximity switch outputs a signal to the detection system.

8. The encoder testing machine as claimed in claim 1, further comprising a defective product taking device (5), wherein the defective product taking device (5) comprises a clamping device (51) for clamping the encoder, a sliding plate (52) fixedly connected with the clamping device (51), and a discharging driving device (53) for driving the sliding plate (52) to ascend and descend, the discharging driving device (53) is rotatably connected with a machine frame (100), the sliding plate (52) is provided with a roller (521), the machine frame (100) is provided with a deflection plate (101), and the deflection plate (101) is provided with a deflection chute (1011) for the roller (521) to roll.

9. The encoder testing machine as claimed in claim 1, wherein the upper testing mold (11) is provided with at least two electric clamps (111) in parallel, and the lower testing mold (12) is provided with at least two axial chuck devices (121) corresponding to the electric clamps (111).

10. The encoder testing machine as claimed in claim 3, wherein the conveyor (2) is located between the conforming bin and the non-conforming bin.