Positioning module used for telescoping test of micro motor

Abstract

The invention relates to a positioning module for a telescoping test of a micro motor. The positioning module comprises a carrier base, a carrier module, a needle die module, a side pushing module and a front-back moving module, an X-axis limiting part and a Y-axis limiting part are arranged at the front end and the left end of the upper end face of the carrier module correspondingly. The front-back moving module comprises an air cylinder fixed to the carrier base, a needle die sliding base in sliding connection with the carrier base, a side pushing rod and a side pushing block, wherein the side pushing rod and the side pushing block are arranged on the needle die sliding base. The needle mold module is arranged on the needle mold sliding seat, the needle mold sliding seat is driven by the air cylinder to move forwards along the Y axis, the lateral pushing rod pushes a product to be detected leftwards in the X axis in advance through the lateral pushing module to be limited by the Y-axis limiting part, and positioning of the product in the X-axis direction is achieved. The side pushing block forwards pushes the product to be tested along the Y axis to be limited by the X-axis limiting part, so that the product is positioned in the Y-axis direction; the needle die module moves forwards and is inserted into the to-be-tested product motor so that the lens of the to-be-tested product is telescopic. According to the invention, the to-be-detected camera module can be automatically positioned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of micro-mechanical testing equipment, and particularly relates to a positioning module for micro motor extension testing. BACKGROUND

[0002] With the popularization of the demand for automatic focusing and optical zoom functions of micro cameras in smart phones, security monitoring equipment, etc., the production of camera modules with built-in micro motors has increased rapidly. In the production process, testing the performance of the micro motor-driven lens assembly in the micro camera, such as extension stroke accuracy, repeatability, response speed, service life, and noise, is a key link to ensure the quality of the module.

[0003] At present, the common testing method is to use a special fixture to fix the camera module to be tested, a high-precision displacement sensor (such as a laser displacement sensor) is aligned with the lens carrier or lens barrel, and the extension displacement is measured non-contactly. At the same time, a test interface board is used to apply a driving signal to the motor and receive the feedback signal of the internal Hall sensor. The existing technical solution has the following significant problems: The positioning accuracy of the fixture for fixing the camera module to be tested is extremely high, and the reliability is insufficient, especially in high-precision (micron-level) testing scenarios. A large amount of time is spent on fixture positioning before each replacement of the test module or batch testing, which seriously restricts the production line testing rhythm. The fixture positioning mechanism is often designed for a specific model of module, and the fixture needs to be replaced when switching models, which is not only poor in universality but also too high in cost. SUMMARY

[0004] Therefore, the present application provides a positioning module for micro motor extension testing, which automatically realizes the positioning of the camera module to be tested. The structure is compact, the accuracy is high, the stability is reliable, the universality is strong, and the strict requirements of modern large-scale automated production are met. The positioning module for the micro motor extension test comprises a carrier base, a carrier module, a needle mold module, a side pushing module and a front and back moving module; the carrier module and the side pushing module are installed on the carrier base, and the side pushing module is located on the right side of the carrier module; the front end and the left end of the upper end surface of the carrier module are respectively provided with an X-axis limiting part and a Y-axis limiting part, the left direction is represented as the -X direction, the back direction is represented as the +Y direction, and the front direction is represented as the -Y direction; the product to be tested is placed in the space surrounded by the X-axis limiting part and the Y-axis limiting part; the front and back moving module comprises a cylinder fixed on the carrier base, a needle mold sliding seat in sliding connection with the carrier base, a side pushing rod and a side pushing block provided on the needle mold sliding seat; the needle mold module is provided on the needle mold sliding seat, and the needle mold sliding seat moves forward along the Y-axis under the driving of the cylinder, thereby driving the side pushing rod, the side pushing block and the needle mold module to move forward; in the process, the side pushing rod pushes the product to be tested leftward along the X-axis by the side pushing module, and the product to be tested is limited by the Y-axis limiting part, so that the positioning of the product to be tested in the X-axis direction is realized; then, the side pushing block pushes the product to be tested forward along the Y-axis, and the product to be tested is limited by the X-axis limiting part, so that the positioning of the product to be tested in the Y-axis direction is realized; finally, the needle mold module moves forward and inserts into the motor of the product to be tested, so that the lens of the product to be tested extends and retracts.

[0005] Further, the side pushing module comprises a side pushing head, a fixed shaft, a bearing limiting block, a fixed sliding rod, a fixed part and a first bearing; the fixed part is fixed on the carrier base, the fixed shaft is arranged along the Z-axis direction and located in the guide groove provided along the X-axis direction of the fixed part, the lower end of the fixed shaft is connected with the first bearing, and the upper end of the fixed shaft is connected with the side pushing head; the fixed sliding rod is arranged along the Y-axis direction on the carrier base, and the left end is provided with a protruding bearing limiting block which can move along the fixed sliding rod; the side pushing rod drives the bearing limiting block to move forward, so that the protruding bearing limiting block drives the first bearing to move leftward along the X-axis, thereby driving the side pushing head to drive the product to be tested to move leftward.

[0006] Further, the positioning module is further provided with a downward pressing module, and the downward pressing module comprises a downward pressing base, a customized pressing head, a pressing head sliding block, a second bearing, a micro guide rail, a fixed block and a guide rod; the downward pressing base is in sliding connection with the carrier base, and the front and back moving module drives the downward pressing base to move forward and backward along the Y-axis; the micro guide rail is arranged on the downward pressing base along the Z-axis direction through the fixed block, the customized pressing head moves up and down along the micro guide rail through the pressing head sliding block; the guide rod passes through the pressing head sliding block and is provided with a positioning hole at the upper end, and the guide rod can move up and down in the positioning hole; the lower end of the guide rod is fixed on the downward pressing base, and the end of the guide rod passing out is provided with a first limiting part; a third spring sleeved on the guide rod is arranged between the pressing head sliding block and the downward pressing base sliding block, and the third spring is always in a compressed state; the second bearing is arranged on the top of the pressing head sliding block, the axis of the second bearing is parallel to the X-axis, and the second bearing is subjected to the force downward along the Z-axis of the front and back moving module, so that the pressing head sliding block drives the customized pressing head to move downward along the micro guide rail, and the product to be tested is pressed.

[0007] Further, the front and back moving module further comprises an inclined sliding block moving forward and backward along the Y axis under the driving of the air cylinder, and the inclined sliding block is provided with an inclined surface for abutting against the second bearing, and the inclined surface is inclined downward from front to back. Further, the rear end of the downward pressing base is connected with a pull rod, the needle die sliding base is fixed with a side pushing connecting block, the rear end of the pull rod passes through the side pushing connecting block and is provided with a through hole moving forward and backward along the Y axis, the pull rod is provided with a third limiting piece at the through end, a seventh spring is sleeved on the pull rod and is arranged between the side pushing connecting block and the downward pressing base, and the seventh spring is always in a compressed state.

[0008] Further, the front and back moving module further comprises a downward pressing base limiting block provided with a rotatable screw bolt along the Y axis, and the distance between the rotatable screw bolt and the downward pressing base is adjusted by rotating the rotatable screw bolt, so that the maximum displacement of the downward pressing base along the Y axis is adjusted.

[0009] Further, the side pushing block is slidingly connected with the needle die sliding base, the rear end of the side pushing block is connected with a limiting guide column, the needle die sliding base is fixed with a middle pulling block provided with a guide hole along the Y axis, the rear end of the limiting guide column passes through the guide hole and moves forward and backward in the guide hole, the limiting guide column is provided with a second limiting piece at the through end, a sixth spring is sleeved on the limiting guide column and is arranged between the middle pulling block and the side pushing block, and the sixth spring is always in a compressed state.

[0010] Further, the front and back moving module further comprises a needle die limiting block, and the front end of the needle die sliding base is provided with a needle die sliding base limiting block; the needle die sliding base limiting block is used for limiting the maximum displacement of the needle die sliding base moving forward; and the rear end of the needle die sliding base limiting block and the front end of the needle die limiting block are respectively provided with a fourth spring and a fifth spring.

[0011] Compared with the prior art, the present application has the following advantages: 1. The needle die sliding base moves forward along the Y axis under the driving of the air cylinder, drives the side pushing rod, the side pushing block and the needle die module to move forward, and sequentially realizes automatic positioning in the X axis and Y axis directions in the process, so that the overall structure is compact, the alignment precision is high, the space surrounded by the X axis limiting part and the Y axis limiting part is used for placing the product to be tested, and the applicability is strong and the universality is high.

[0012] 2. In the downward pressing module, the customized pressing head moves up and down along the micro guide rail through the pressing head sliding block, the pressing head sliding block and the downward pressing base sliding block are provided with a guide rod sleeved with a third spring, when the customized pressing head is pressed to press the product to be tested, the upper end of the guide rod extends from the pressing head sliding block and compresses the third spring, and after the force of the second bearing is removed, the pressing head sliding block moves upward under the elastic force of the third spring, and drives the customized pressing head to move upward, so that the limiting of the product to be tested is released.

[0013] 3. The lower pressing base of the present application is limited by the pressing base limiting block as the needle die module moves forward, the pull rod extends through the through hole, the seventh spring is compressed, the lower pressing base and the lower pressing module thereon are stationary, and the inclined slide block in contact with the second bearing in the lower pressing module still moves forward with the needle die module, so that the inclined surface presses downward on the second bearing, the custom pressure head moves downward along the micro guide rail driven by the pressure head slide block, and is used for pressing the product to be tested, i.e. Z-axis direction limiting.

[0014] 4. The fourth spring and the fifth spring are arranged at the corresponding positions of the rear end of the needle die slide block limiting block and the front end of the needle die limiting block, respectively, after the Y-axis direction positioning is completed, the cylinder is pushed forward, the fourth spring and the fifth spring are continuously compressed to offset the pushing force of the forward movement of the cylinder, at the same time, the middle tension block compresses the sixth spring sleeved on the limiting guide column as the needle die slide block moves forward, the rear end of the limiting guide column extends backward along the guide hole on the middle tension block, so that the side pushing block remains stationary, and it is ensured that it will not be squeezed to the product to be tested as the needle die slide block moves forward. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present application installed in a micro motor extension test equipment.

[0016] Figure 2 It is a schematic diagram of the overall structure of the present application.

[0017] Figure 3 It is a schematic diagram of the carrier module structure of the present application.

[0018] Figure 4 It is a schematic diagram of the needle die module structure of the present application.

[0019] Figure 5 It is a schematic diagram of the side pushing module structure of the present application.

[0020] Figure 6 It is a schematic diagram of the lower pressing module structure of the present application.

[0021] Figure 7 It is a schematic diagram of the forward and backward moving module structure of the present application.

[0022] Figure 8 It is a schematic diagram of the forward and backward moving module structure of the present application.

[0023] Figure 9 It is a schematic diagram of the connection between the forward and backward moving module and the lower pressing base of the present application (not including the inclined slide block).

[0024] Wherein, 100-positioning module, 101-carrier module, 102-needle module, 103-side push module, 104-down pressure module, 105-front and back movement module, 140-laser ranging module, 150-acquisition power supply module, 160-bottom carrier, 1-first clamp, 2-second clamp, 3-carrier, 4-probe, 5-connector, 6-circuit board, 7-insulating plate, 8-fixing part, 9-fixing pin, 10-side push head, 11-fixing shaft, 12-connection part, 13-bearing limiting block, 14-baffle, 15-fixing slide rod, 16-front fixing seat, 17-rear fixing seat, 18-fixing piece, 19-first bearing, 22-customized pressure head, 23-pressure head connecting block, 24-pressure head sliding block, 25-second bearing, 26-micro guide rail, 27-guide rail sliding block, 28-fixing block, 29-guide rod, 30-carrier base, 31-down pressure base limiting block, 32-needle module sliding seat limiting block, 33-first linear rail, 34-inclined sliding block fixing seat, 35-cylinder joint, 36-cylinder fixing seat, 37-cylinder, 38-external joint, 39-second linear rail, 40-cylinder limiting block, 41-intermediate limiting block, 42-needle module sliding seat, 43-down pressure base, 44-pull rod, 45-left side push connecting block, 46-needle module limiting block, 47-third linear rail, 48-intermediate tension block, 49-right side push connecting block, 50-side push rod, 51-side push block, 52-spring block, 53-inclined sliding block, 54-limiting guide column. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application. The present application provides a positioning module for micro motor extension test, as shown in the figure, the positioning module 100 is a mechanism for carrying and positioning the camera module to be tested in the micro motor extension test equipment, the positioning module 100 can automatically realize the positioning of the camera module to be tested in X axis, Y axis and Z axis. In addition to the positioning module 100, the micro motor extension test equipment also includes a bottom carrier 160, a laser ranging module 140, a laser ranging adjustment module and an acquisition power supply module 150, the bottom carrier 160 is used for installing the positioning module 100 and the laser ranging adjustment module, the laser ranging adjustment module is used for realizing the alignment of the lens assembly in the laser ranging module 140 and the camera module to be tested, and the laser ranging module 140 is used for measuring the extension distance of the lens assembly in the camera module to be tested. Figure 1

[0026] Figure 1 ​The three-dimensional coordinate system only indicates the direction and has no other meaning. For the convenience of explanation, the right refers to the +X direction, the left refers to the -X direction, the back refers to the +Y direction, the front refers to the -Y direction, the top refers to the +Z direction, and the bottom refers to the -Z direction.

[0027] like Figure 2 As shown, the positioning module 100 includes a carrier base 30, a carrier module 101, a pin module 102, a side push module 103, a downward pressure module 104, and a forward and backward movement module 105. The carrier base 30 serves as a support for the remaining modules. Each carrier module 101, pin module 102, side push module 103, and downward pressure module 104 constitutes a test assembly, corresponding to a camera module under test. Multiple sets of test assemblies can be configured as needed; in this embodiment, two sets are used.

[0028] like Figure 3 As shown, the carrier module 101 is used to carry the camera module to be tested, and the carrier module 101 includes a carrier 3, a first fixture 1, and a second fixture 2. The carrier 3 is fixed to the front portion of the upper end of the carrier base 30 by bolts, and the first fixture 1 and the second fixture 2 are both fixed to the top of the carrier 3.

[0029] The first fixture 1 is a semi-enclosed structure consisting of an X-axis limiter and a Y-axis limiter. It is located in front of the left side of the stage 3. The Y-axis limiter is located at the left end of the stage 3 along the Y-axis direction, and the X-axis limiter is located at the front end of the stage 3 along the X-axis direction. The second fixture 2 is a columnar structure and is located to the right rear of the stage 3. The first and second fixtures 1 and 2 form a chamber for the micromotor to be tested. The right and rear ends of this chamber are both open to expose the right and rear ends of the camera module to be tested, respectively.

[0030] The side pushing module 103 pushes the right end of the camera module to be tested, so that it moves to the right along the X-axis and is limited by the Y-axis limit part of the first fixture 1; the front and rear moving module 105 pushes the rear end of the camera module to be tested, so that it moves forward along the Y-axis and is limited by the X-axis limit part.

[0031] like Figure 4 As shown, the needle mold module 102 is located behind the carrier module 101, and its position corresponds to the rear end opening of the accommodating chamber. The needle mold module 102 is used to insert the motor in the camera module to be tested. When powered on, the lens in the camera module to be tested performs telescopic movement. The needle mold module 102 includes a probe 4, a connector 5, a circuit board 6, an insulating plate 7, and a fixing portion 8 connected together from front to back. The probe 4 is fixed to the circuit board 6 through the connector 5, and the circuit board 6 is fixed to the fixing portion 8 through the insulating plate 7. The fixing portion 8 is used to connect to the forward and backward moving module 105. The needle mold module 102 moves in the Y-axis direction through the forward and backward moving module 105 and inserts the motor of the camera module to be tested.

[0032] likeFigure 5 As shown, the side pushing module 103 is located on the right side of the carrier module 101, corresponding to the opening at the right end of the accommodating chamber, and is used for adjusting the position of the camera module to be tested in the X-axis direction. The side pushing module 103 comprises a fixed pin 9, a side pushing head 10, a fixed shaft 11, a connecting part 12, a bearing limiting block 13, a baffle 14, a fixed slide rod 15, a front fixed seat 16, a rear fixed seat 17, a fixed part 18 and a first bearing 19.

[0033] The fixed part 18 is located on the right side of the platform 3, is fixed on the carrier base 30, and is provided with a recess on the side away from the platform 3. The recess is provided with the first bearing 19, and the axis of the first bearing 19 is parallel to the Z-axis. The fixed shaft 11 is arranged along the Z-axis direction, is located in the guide groove along the X-axis direction provided on the top of the fixed part 18, and is connected with the first bearing 19 at the lower end. The upper end of the fixed shaft 11 is connected with the side pushing head 10 through the connecting part 12. The side pushing head 10 is fixed on the left end of the end of the connecting part 12 facing the camera module to be tested, corresponds to the position of the opening at the right end of the accommodating chamber, and is used for pushing the right end of the camera module to be tested to the left along the X-axis.

[0034] The fixed shaft 11 is provided with a through hole along the X-axis direction, and the fixed pin 9 passes through the through hole to limit the fixed shaft 11 on the fixed part. The fixed shaft 11 can move along the X-axis direction of the fixed pin 9 but cannot move in the Y and Z-axis directions. The first spring is sleeved on the fixed pin 9 and is arranged between the fixed shaft 11 and the left end of the fixed part 18. When the fixed shaft 11 moves from right to left along the X-axis and approaches the left end of the fixed part 18, the first spring is compressed. The through hole is connected with the fixed pin 9 of different heights to adjust the positioning of the side pushing head 10 in the Z-axis direction.

[0035] The fixed slide rod 15, the front fixed seat 16 and the rear fixed seat 17 are all located on the right side of the fixed part 18, and the connection relationship is that the two fixed slide rods 15 are arranged along the Y-axis direction, the two ends of the fixed slide rod 15 are fixed on the front fixed seat 16 and the rear fixed seat 17 respectively, and the baffle 14 is further arranged between the two fixed slide rods 15. The bearing limiting block 13 is arranged on the two fixed slide rods 15 and can move along the fixed slide rod 15 in the Y-axis direction. The left end of the bearing limiting block 13 is provided with a protrusion. The second spring is sleeved on the two fixed slide rods 15 and is arranged between the front fixed seat 16 and the bearing limiting block 13. The bearing limiting block 13 moves forward along the Y-axis and approaches the front fixed seat 16 to compress the second spring.

[0036] The front and back moving module 105 can push the bearing limiting block 13 to move along the fixed slide rod 15 in the Y-axis direction from back to front. The protruding initial position of the bearing limiting block 13 is behind the first bearing 19 and does not contact the first bearing 19. When the bearing limiting block 13 moves from back to front, the bearing limiting block 13 abuts against the first bearing 19, pushes the first bearing 19 to drive the connecting part 12 and the side pushing head 10 to move along the X-axis direction from right to left through the fixed shaft 11, thereby pushing the camera module to be tested to move along the X-axis direction from right to left, and realizing the positioning of the camera module to be tested in the X-axis direction. After the front and back moving module 105 removes the pushing of the bearing limiting block 13, the bearing limiting block 13 is reset under the elastic force of the second spring, and the bearing limiting block 13 removes the pushing force on the first bearing 19, so that the first bearing 19, the fixed shaft 11 and the side pushing head 10 are reset under the elastic force of the first spring.

[0037] As shown in Figure 6 The downward pressing module 104 moves along the Y and Z axes through the front and back moving module 105, and is used for pressing the camera module to be tested downward to realize the positioning of the camera module to be tested in the Z-axis direction. The downward pressing module 104 includes a downward pressing base 43, a customized pressing head 22, a pressing head connecting block 23, a pressing head sliding block 24, a second bearing 25, a micro guide rail 26, a guide rail sliding block 27, a fixed block 28 and a guide rod 29 with a third spring. The downward pressing base 43 is connected with the front and back moving module 105, and the front and back moving module 105 makes the downward pressing base 43 move along the Y axis.

[0038] The fixed block 28 is fixed on the downward pressing base 43, and the micro guide rail 26 is arranged on the fixed block 28 in the Z-axis direction. The customized pressing head 22 is fixed on the pressing head connecting block 23 through a screw, the pressing head connecting block 23 is fixed on the pressing head sliding block 24 through a bolt, the pressing head sliding block 24 is fixed on the guide rail sliding block 27 through a screw, and the guide rail sliding block 27 can move up and down along the micro guide rail 26.

[0039] Two guide rods 29 with third springs are arranged at the left and right ends of the pressing head sliding block 24 respectively. The upper end of the guide rod 29 penetrates out of the pressing head sliding block 24 and is provided with a positioning hole, and the guide rod 29 can move up and down along the Z axis in the positioning hole. The lower end of the guide rod 29 is fixed on the downward pressing base 43. The end of the guide rod 29 penetrating out of the pressing head sliding block 24 is provided with a first limiting piece for preventing the guide rod 29 from being separated downward from the pressing head sliding block 24. The third spring sleeved on the guide rod 29 is arranged between the pressing head sliding block 24 and the downward pressing base 43, and the third spring is always in a compressed state.

[0040] A second bearing 25 is mounted on top of the indenter slider 24, with its axis parallel to the X-axis. Under the force exerted downward along the Z-axis, the second bearing 25 causes the indenter slider 24 to move downward along the micro-guide rail 26, driving the customized indenter 22 downward via the indenter connecting block 23 to press the camera module under test. Simultaneously, the indenter slider 24 presses downward, causing the upper end of the guide rod 29 to extend out of the positioning hole, compressing the third spring. After the force on the second bearing 25 is removed, the indenter slider 24 moves upward under the force of the third spring, simultaneously driving the customized indenter 22 upward and releasing the position limit on the camera module under test.

[0041] like Figure 7 、 8 As shown, the forward and backward movement module 105 includes a downward pressure base limit block 31, a needle mold slide limit block 32, a first linear rail 33, an inclined slider fixing seat 34, a cylinder joint 35, a cylinder fixing seat 36, a cylinder 37, an external joint 38, a second linear rail 39, a cylinder limit block 40, an intermediate limit block 41, a needle mold slide 42, a pull rod 44, a left push connection block 45, a needle mold limit block 46, a third linear rail 47, a middle tensioning block 48, a right push connection block 49, a side push rod 50, a side push block 51, a spring 52, an inclined slider 53, and a limiting guide post 54. The first linear rail 33, the second linear rail 39, and the third linear rail 47 are all arranged along the Y-axis, and are respectively provided with a first slider, a second slider, and a third slider.

[0042] The cylinder 37 is fixed to the middle of the rear end of the carrier base 30 through the cylinder fixing seat 36. The external joint 38 is fixed to the cylinder 37. The external joint 38 is connected to an air pipe to control the forward and backward movement of the driving rod provided in the cylinder 37.

[0043] The rear end of the inclined slider holder 34 is connected to the drive rod of the cylinder 37 via a cylinder joint 35. The front end of the inclined slider holder 34 is bolted to the cylinder stopper 40. A sliding groove along the Y-axis is provided in the center of the carrier base 30. The cylinder stopper 40 is positioned within the groove, allowing the inclined slider holder 34 to slide forward and backward along the Y-axis driven by the drive rod of the cylinder 37. An intermediate stopper 41 is secured to the front end of the groove via bolts and a locating pin. Its function is to limit the maximum forward displacement of the inclined slider holder 34.

[0044] like Figure 7 As shown, the two inclined sliders 53 are connected to the inclined slider fixing seat 34. The inclined slider 53 is composed of a horizontal part and a vertical part connected vertically. The lower end of the vertical part is fixed to the upper end surface of the inclined slider fixing seat 34 by bolts. The horizontal part faces the front end of the carrier base 30. The front end of the horizontal part is an inclined surface, which is inclined downward from front to back. The inclined surface is used to abut against the second bearing 25 of the downward pressure module 104.

[0045] like Figure 8As shown, two second rails 39 are fixed on the carrier base 30 by bolts and located on the left and right sides of the sliding groove, and the inclined slide block fixing seat 34 is located above the second rails 39. The second slides on the left and right second rails 39 are connected with the left and right needle die sliding seats 42 respectively by bolts, the needle die sliding seat 42 is fixed on the lower end of the inclined slide block fixing seat 34 by bolts, and the inclined slide block fixing seat 34 moves back and forth along the Y-axis direction to drive the needle die sliding seat 42 to move back and forth.

[0046] The fixed part 8 of the needle die module 102 is connected to the position corresponding to the motor of the camera module to be tested at the front end of the needle die sliding seat 42. The needle die sliding seat 42 is provided with a side push rod 50 along the Y-axis direction, and the position of the side push rod 50 corresponds to the position of the bearing limiting block 13 of the side push module 103. The rear end of the side push rod 50 is connected with the needle die sliding seat 42 by its own thread, and the front end of the side push rod 50 is used to push the bearing limiting block 13 on the side push module 103 when the needle die sliding seat 42 moves forward, thereby providing a force for the forward movement of the bearing limiting block 13.

[0047] The needle die sliding seat limiting block 32 is fixed on the carrier base 30 by bolts and used to limit the maximum displacement of the forward movement of the needle die sliding seat 42. The needle die limiting block 46 is arranged at the position corresponding to the needle die sliding seat limiting block 32 at the front end of the needle die sliding seat 42. The fourth spring and the fifth spring are arranged at the positions corresponding to the rear end of the needle die sliding seat limiting block 32 and the front end of the needle die limiting block 46 respectively. When the needle die limiting block 46 abuts against the needle die sliding seat limiting block 32, the needle die sliding seat limiting block 32 limits the needle die sliding seat 42 from continuing to move forward, and the compression of the fourth spring and the fifth spring can offset the pushing force of the cylinder 37.

[0048] Two third rails 47 are arranged on the left and right needle die sliding seats 42 respectively, and the positions of the third rails 47 correspond to the positions of the rear end openings of the accommodation chambers of the carrier modules 101. The rear end of the side push block 51 is fixed on the third slide of the rail 47 through the elastic block 52, and the front end of the side push block 51 is used to abut against the rear end of the camera module to be tested to push the camera module to be tested to realize the positioning of the camera module to be tested along the Y-axis. Two middle tension blocks 48 are arranged at the rear ends of the two third rails 47 respectively and fixed on the upper surfaces of the two needle die sliding seats 42 by bolts. The middle tension block 48 is provided with a guide hole along the Y-axis direction.

[0049] The limiting guide column 54 with the sixth spring is arranged along the Y-axis. The front end of the limiting guide column 54 is fixed with the elastic block 52 through the thread. The rear end of the limiting guide column 54 penetrates through the guide hole of the middle tension block 48, and the limiting guide column 54 can move back and forth in the guide hole. The end of the limiting guide column 54 penetrating out of the middle tension block 48 is provided with a second limiting part, and the second limiting part limits the forward movement of the limiting guide column 54 out of the guide hole. The sixth spring is sleeved on the limiting guide column 54 and arranged between the middle tension block 48 and the elastic block 52, and the sixth spring is always in a compressed state.

[0050] The left and right first line rails 33 are fixedly installed on the carrier base 30 and are respectively located at the left side of the left end second line rail 39 and the right side of the right end second line rail 39. Figure 9 As shown in the figure, the lower pressing base 43 is composed of a left end support, a right end support and an upper end plate fixedly connected to the top of the left end support and the right end support. The left end support and the right end support of the lower pressing base 43 are respectively fixed on the first sliding blocks of the left and right first line rails 33. The upper end plate of the lower pressing base 43 is located above the side pushing block 51. The upper end plate of the lower pressing base 43 is used for being connected with the lower pressing module 104.

[0051] The rear ends of the left end support and the right end support of the lower pressing base 43 are respectively movably connected with the two needle mold sliding seats 42 through the pull rods 44 provided with the seventh springs. The specific connection mode is as follows: the left end and the right end of the two needle mold sliding seats 42 are respectively fixed with the left side pushing connecting block 45 and the right side pushing connecting block 49. The left side pushing connecting block 45 and the right side pushing connecting block 49 are both provided with through holes in the Y-axis direction. The pull rods 44 are arranged in the Y-axis direction. The front ends of the two pull rods 44 are respectively fixed on the rear ends of the left end support and the right end support of the lower pressing base 43 through the threads of the pull rods 44. The rear ends of the two pull rods 44 respectively pass through the through holes of the left side pushing connecting block 45 and the right side pushing connecting block 49. The pull rods 44 can move forward and backward in the guide holes. The end portions of the pull rods 44 passing out of the through holes are provided with third limiting pieces. The third limiting pieces are used for preventing the pull rods 44 from being separated from the through holes when moving forward. The seventh springs are sleeved on the pull rods 44. The two seventh springs are respectively arranged between the left side pushing connecting block 45 and the left end support and between the right side pushing connecting block 49 and the right end support. The seventh springs are always in a compressed state.

[0052] The front of the left and right first line rails 33 is respectively provided with a lower pressing base limiting block 31. The lower pressing base limiting block 31 is fixed on the carrier base 30 through bolts. The function of the lower pressing base limiting block 31 is to limit the maximum displacement of the forward movement of the lower pressing base 43. The lower pressing base limiting block 31 is provided with a rotatable bolt in the Y-axis direction. The distance between the rear end face of the rotatable bolt and the lower pressing base 43 can be adjusted by rotating the rotatable bolt. Thus, the distance of the forward movement of the lower pressing base 43 on the first line rail 33 in the Y-axis direction can be adjusted.

[0053] The working principle of the micro motor extension test positioning module provided by the application is as follows: During the test, the product to be tested is placed in the accommodating chamber of the carrier 3, and the test is started. The positioning module 100 first performs preliminary positioning and the forward and backward movement module 105 returns to the initial position. Then the cylinder 37 drives the rod to move forward, the inclined sliding block fixing seat 34 drives the needle mold sliding seat 42 to move forward, and the needle mold sliding seat 42 moves forward to make the side pushing rod 50, the side pushing block 51, the lower pressing base 43 and the inclined sliding block fixing seat 34 move forward synchronously.

[0054] The side pushing rod 50 pushes the bearing limiting block 13 on the side pushing module 103 forward, the protruding part of the bearing limiting block 13 abuts against the first bearing 19, the first bearing 19 is pushed to drive the side pushing head 10 to push the test product leftward along the X axis, the positioning of the test product in the X direction is realized, and the bearing limiting block 13 is compressed to move forward, and the first spring on the fixed slide rod 15 is compressed. At the same time, the lower pressing base 43 moves forward until abutting against the lower pressing base limiting block 31, and the lower pressing base limiting block 31 limits the lower pressing base 43 from continuing to move forward.

[0055] The cylinder 37 continues to push forward, drives the left and right needle mold sliding bases 42 and the side pushing blocks 51 thereon to continue to move forward, the lower pressing base 43 is stationary because it is blocked by the lower pressing base limiting blocks 31 on both sides, the left and right side pushing connecting blocks 45 and 49 are driven by the left and right needle mold sliding bases 42 to move forward respectively, thereby the seventh spring is compressed, and the pull rod 44 extends out of the guide holes of the left and right side pushing connecting blocks 45 and 49. Until the two needle mold limiting blocks 46 at the front ends of the two needle mold sliding bases 42 abut against the needle mold sliding base limiting blocks 32, and at the same time, the test product is moved along the Y axis from back to front by the two side pushing blocks 51 moving forward during the process, the positioning in the Y direction is realized, that is, the positioning in the X and Y directions is completed.

[0056] The cylinder 37 continues to push forward, because the two needle mold limiting blocks 46 at the front ends of the needle mold sliding bases 42 abut against the needle mold sliding base limiting blocks 32, the fourth spring and the fifth spring are continuously compressed, the elastic force of the fourth spring and the fifth spring offsets the pushing force of the cylinder 37 moving forward, so that the two side pushing blocks 51 remain stationary, and at the same time, the middle tension block 48 is compressed to move forward with the needle mold sliding bases 42, the sixth spring is sleeved on the limiting guide column 54, and the rear end of the limiting guide column 54 extends backward along the guide hole on the middle tension block 48.

[0057] During the movement of the needle mold sliding bases 42, the inclined sliding block fixing seat 34 and the inclined sliding block 53 thereon are driven to move forward, the lower pressing base 43 and the side pushing blocks 51 remain stationary, the positioning in the X and Y directions is completed, the inclined surface provided at the front end of the horizontal part of the inclined sliding block 53 is in contact with the second bearing 25 of the lower pressing module 104, the inclined surface presses downward the second bearing 25 as the inclined sliding block 53 moves forward, that is, the second bearing 25 slides downward under the action of the inclined surface of the inclined sliding block 53, drives the lower pressing module 104 to move downward, the compression head sliding block 24 presses the upper end of the guide rod 29 to extend out of the positioning hole, the third spring sleeved on the guide rod 29 is compressed, until the customized compression head 22 presses the product, thereby the positioning in the Z axis direction is completed.

[0058] When the three-direction positioning is completed, the cylinder 37 continues to push forward for a certain distance, the three-direction compression springs continue to be compressed and sleeved on the seventh spring on the pull rod 44, the third spring on the guide rod 29, and the sixth spring on the limiting guide column 54, and meanwhile drive the needle mold module 102 to continue to move forward for a certain distance, the fixed probe 4 on the needle mold module 102 is accurately inserted into the test product to perform the electrification test, and after all the above actions are completed, the distance measuring module 140 is started to test the extension distance of the product.

[0059] After the test is completed, the cylinder 37 retreats, the fixed probe 4 on the needle mold module 102 is separated from the product, the inclined sliding block 53 moves backward, the Z-axis direction downward pressing module 104 moves upward to reset under the action of the third spring, the two side pushing blocks 51 in the Y-axis direction move backward, the side pushing rod 50 in the X-axis direction moves backward to drive the bearing limiting block protrusion to move backward, the first bearing 19 drives the side pushing head 10 to move right to reset under the action of the first spring, and after all the components are reset, the product is taken out, and the whole test process is completed.

[0060] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A positioning module for micro motor extension and contraction testing, characterized in that: The positioning module includes a carrier base, a carrier module, a needle mold module, a side push module and a front and rear moving module; The carrier module and thruster module are installed on the carrier base, with the thruster module located on the right side of the carrier module. The front and left ends of the upper end of the carrier module are respectively provided with X-axis limiters and Y-axis limiters. The left side represents the -X direction, the back side represents the +Y direction, and the front side represents the -Y direction. The product to be tested is placed in the space enclosed by the X-axis limiter and the Y-axis limiter. The forward and backward moving module includes a cylinder fixed on the carrier base, a needle mold slide slidably connected to the carrier base, and a side push rod and a side push block provided on the needle mold slide. The needle mold module is provided on the needle mold slide. The needle mold slide moves forward along the Y axis under the drive of the cylinder, driving the side push rod, the side push block, and the needle mold module forward. During the process, the side push rod pushes the product to be tested to the left along the X-axis through the side push module in advance, and is limited by the Y-axis limit part to achieve its positioning in the X-axis direction; then, the side push block pushes the product to be tested forward along the Y-axis and is limited by the X-axis limit part to achieve its positioning in the Y-axis direction; then, the needle mold module moves forward and inserts the motor of the product to be tested to make the lens of the product to be tested extend and retract.

2. The positioning module for micro motor expansion and contraction testing according to claim 1, wherein: The side thrust module includes a side thrust head, a fixed shaft, a bearing limit block, a fixed slide bar, a fixing member and a first bearing; the fixing member is fixed to the carrier base, the fixed shaft is arranged along the Z-axis direction and is located in a guide groove provided along the X-axis direction of the fixing member, the lower end of the fixed shaft is connected to the first bearing, and the upper end of the fixed shaft is connected to the side thrust head; The fixed slide rod is set on the carrier base along the Y-axis direction, and a raised bearing limit block is provided at the left end, which can move along the fixed slide rod; the side push rod pushes the bearing limit block forward, so that the bearing limit block protrusion pushes the first bearing to move left along the X-axis, driving the side push head to push the product to be tested to move left.

3. The positioning module for micro motor expansion and contraction testing according to claim 1, wherein: The positioning module is further provided with a pressing module, which includes a pressing base, a customized pressing head, a pressing head slider, a second bearing, a micro guide rail, a fixing block and a guide rod; the pressing base is slidably connected to the carrier base, and the forward and backward movement module enables the pressing base to move forward and backward along the Y axis; The micro guide rail is arranged on the pressing base through a fixed block along the Z-axis direction, and the customized pressing head moves up and down along the micro guide rail through the pressing head slider; the upper end of the guide rod passes through the pressing head slider and is provided with a positioning hole, and the guide rod can move up and down in the positioning hole; the lower end of the guide rod is fixed to the pressing base, and the protruding end of the guide rod is provided with a first limiter; the third spring set on the guide rod is arranged between the pressing head slider and the pressing base slider, and the third spring is always in a compressed state; The second bearing is set on the top of the pressure head slider, and the axis of the second bearing is parallel to the X-axis. The second bearing is subjected to the downward force of the forward and backward moving module along the Z-axis, so that the pressure head slider drives the customized pressure head to move downward along the micro guide rail to press the product to be tested.

4. The positioning module for micro motor expansion and contraction testing according to claim 3, characterized in that: The forward and backward moving module also includes an inclined sliding block which moves forward and backward along the Y axis under the drive of the cylinder. The inclined sliding block is provided with an inclined surface for contacting with the second bearing, and the inclined surface is inclined downward from front to back.

5. The positioning module for micro motor expansion and contraction testing according to claim 3, characterized in that: The rear end of the pressure base is connected to a pull rod, and the needle mold slide is fixed with a side push connecting block. The rear end of the pull rod passes through the side push connecting block and is provided with a through hole along the Y-axis direction, and can move back and forth in the through hole. The protruding end of the pull rod is provided with a third limit piece, and the seventh spring mounted on the pull rod is set between the side push connecting block and the pressure base, and the seventh spring is always in a compressed state.

6. The positioning module for micro motor expansion and contraction testing according to claim 1, characterized in that: The forward and backward moving module also includes a downward pressure base limit block, which is provided with a rotatable bolt along the Y-axis direction. By rotating the rotatable bolt, the distance between the downward pressure base and the downward pressure base is adjusted, thereby adjusting the maximum forward displacement of the downward pressure base along the Y-axis.

7. The positioning module for micro motor expansion and contraction testing according to claim 1, characterized in that: The side push block is slidably connected to the needle mold slide, and the rear end of the side push block is connected to the limiting guide post. The needle mold slide is fixed with a middle tensioning block provided with a guide hole along the Y-axis direction. The rear end of the limiting guide post passes through the guide hole and can move back and forth in the guide hole. The protruding end of the limiting guide post is provided with a second limiting piece. The sixth spring fitted on the limiting guide post is set between the middle tensioning block and the side push block, and the sixth spring is always in a compressed state.

8. The positioning module for micro motor extension and contraction testing according to any one of claims 1 to 7, characterized in that: The forward and backward moving module also includes a needle mold limit block, and a needle mold slide limit block is provided at the front end of the needle mold slide; the needle mold slide limit block is used to limit the maximum displacement of the needle mold slide moving forward; the fourth spring and the fifth spring are respectively provided at the corresponding positions of the rear end of the needle mold slide limit block and the front end of the needle mold limit block.

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