Flatness detection jig

Abstract

The utility model discloses a flatness detection jig which comprises an upper die assembly, a lower die assembly and a positioning assembly, and an upper die induction piece is arranged at the bottom end of an upper die positioning plate; the upper mold assembly is used for covering the lower mold assembly, the lower mold induction piece is arranged in the positioning area, the upper mold induction piece corresponds to the lower mold induction piece in position, a detection gap is formed between the upper mold induction piece and the lower mold induction piece, and the detection gap is used for containing part of a mobile phone middle frame. The upper die induction piece and the lower die induction piece are used for detecting whether the flatness of the mobile phone middle frame is qualified or not; the positioning assembly is arranged between the upper die assembly and the lower die assembly and used for achieving alignment positioning of the lower die positioning plate and the upper die positioning plate. The flatness detection jig is high in detection efficiency and high in detection precision, so that the product yield of the mobile phone middle frame can be improved, time and labor are saved, and the labor cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone middle frames, and in particular to a flatness detection jig. Background Art

[0002] The mobile phone middle frame products commonly used in life are usually injection molded by molds. During the processing and molding, the flatness of the product will change. In order to ensure the integrity and good appearance of the product, products with poor flatness need to be distinguished after molding. After the traditional mobile phone middle frame products are injection molded, they are manually inspected for flatness with a feeler gauge, which is time-consuming and labor-intensive and cannot achieve the required accuracy. The manual operation method of using a feeler gauge has low work efficiency, poor results, and high labor costs. Therefore, it is necessary to design an automatic flatness detection fixture that can easily and automatically detect the flatness of the mobile phone middle frame and has high work efficiency. Utility Model Content

[0003] Based on this, it is necessary to provide an automatic flatness detection fixture that can conveniently and automatically detect the flatness of the mobile phone middle frame and has high work efficiency.

[0004] A flatness detection jig, comprising:

[0005] An upper die assembly, the upper die assembly comprising an upper die positioning plate and an upper die sensing member, the upper die sensing member being arranged at the bottom end of the upper die positioning plate;

[0006] A lower mold assembly, wherein the upper mold assembly is used to cover the upper part of the lower mold assembly, the lower mold assembly includes a lower mold positioning plate and a lower mold sensor, the lower mold positioning plate has a positioning area, the lower mold sensor is arranged in the positioning area, the upper mold sensor corresponds to the position of the lower mold sensor, the positioning area is used to carry the mobile phone middle frame, and the upper mold sensor and the lower mold sensor have a detection gap, the detection gap is used to accommodate part of the mobile phone middle frame, the upper mold sensor is used to detect whether the mobile phone middle frame is convex to a first preset value, and the lower mold sensor is used to detect whether the mobile phone middle frame is concave to a second preset value, thereby judging whether the flatness of the mobile phone middle frame is qualified;

[0007] A positioning assembly is disposed between the upper mold assembly and the lower mold assembly, and the positioning assembly is used to achieve alignment and positioning of the lower mold positioning plate and the upper mold positioning plate.

[0008] Optionally, the height of the detection gap is greater than the thickness of the mobile phone middle frame by a third preset value, the mobile phone middle frame is located in the middle of the detection gap, the upper mold sensing component is used to detect whether the front side of the mobile phone middle frame is in contact with the upper mold sensing component, thereby determining whether the mobile phone middle frame is convex to a first preset value, and the lower mold sensing component is used to detect whether the back side of the mobile phone middle frame is in contact with the lower mold sensing component, thereby determining whether the mobile phone middle frame is concave to a second preset value.

[0009] Optionally, the upper mold assembly also includes a first alarm, which is arranged on the upper mold positioning plate, the upper mold sensor and the mobile phone middle frame are both made of metal, and the first alarm is electrically connected to one end of the upper mold sensor, and the other end of the upper mold sensor is used to be connected to one pole of a power supply, and the other pole of the power supply is used to be electrically connected to the mobile phone middle frame.

[0010] Optionally, the lower mold assembly also includes a second alarm, which is arranged on the lower mold positioning plate. The lower mold sensor is made of metal. The second alarm is electrically connected to one end of the lower mold sensor, and the other end of the lower mold sensor is used to be electrically connected to one pole of the power supply.

[0011] Optionally, the upper mold assembly also includes a first plug interface, which is arranged on the side of the upper mold positioning plate, and the first plug interface is electrically connected to the upper mold sensing component. The lower mold assembly also includes a second plug interface, which is arranged on the side of the lower mold positioning plate, and the second plug interface is electrically connected to the lower mold sensing component.

[0012] Optionally, the upper mold assembly further includes a top plate, which is disposed directly above the upper mold positioning plate, and the lower mold assembly further includes a bottom plate, which is disposed directly below the lower mold positioning plate.

[0013] Optionally, the lower mold assembly further includes a positioning protrusion, and the positioning protrusion is arranged on the lower mold sensing member, and the position of the positioning protrusion corresponds to the air avoidance position of the mobile phone middle frame.

[0014] Optionally, the positioning assembly includes a guide column, which is arranged at the bottom end of the upper mold positioning plate. The lower mold positioning plate is provided with a guide hole, and the guide column is used to be inserted into the guide hole to achieve alignment and positioning of the lower mold positioning plate and the upper mold positioning plate.

[0015] Optionally, there are multiple guide pillars, which are spaced apart at the bottom end of the upper mold positioning plate and circumferentially arranged around the upper mold positioning plate, and the lower mold positioning plate is spaced apart with multiple guide holes, and the multiple guide holes correspond one-to-one to the multiple guide pillars.

[0016] Optionally, the flatness detection jig further includes a fixing component, which is disposed at the bottom end of the upper mold sensing component and is used to fix the middle frame of the mobile phone relative to the upper mold sensing component.

[0017] Optionally, the fixing component includes a positioning column, the upper mold sensing component is provided with a positioning hole, the positioning column is inserted into the positioning hole, and the positioning column can be extended and retracted along the axial direction of the positioning hole, and the positioning column is used to press against the front side of the mobile phone middle frame to achieve fixation of the mobile phone middle frame relative to the upper mold sensing component.

[0018] Optionally, there are multiple positioning posts, and the upper mold sensing component is provided with multiple positioning holes at intervals, and the multiple positioning posts correspond to the positioning holes one by one.

[0019] Optionally, the lower mold assembly further includes a plurality of guide blocks, which are spaced apart at the top end of the lower mold positioning plate and are arranged around the four sides of the lower mold positioning plate.

[0020] Optionally, the upper mold assembly also includes a first support member, which is arranged at the bottom of the upper mold positioning plate, and the lower mold assembly also includes a second support member, which is arranged at the top of the lower mold positioning plate, and the position of the first support member corresponds to the position of the second support member to achieve support and alignment between the upper mold positioning plate and the lower mold positioning plate.

[0021] The flatness detection jig provided by the present application places the middle frame of the mobile phone in the detection gap, and can conveniently and quickly detect whether the flatness of the middle frame of the mobile phone is qualified through the upper mold sensing parts and the lower mold sensing parts. Compared with manual detection, the flatness detection jig of the present application has high detection efficiency and high detection accuracy, thereby improving the product yield of the middle frame of the mobile phone, saving time and effort, and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a flatness detection fixture in one embodiment;

[0024] Figure 2A schematic diagram of the structure of an upper mold assembly, a fixing assembly and a positioning assembly in one embodiment;

[0025] Figure 3 It is a schematic diagram of the structure of the lower mold assembly, the fixing assembly and the positioning assembly in one embodiment.

[0026] 1. Upper mold assembly; 11. Upper mold positioning plate; 12. Upper mold sensor; 13. Top plate; 14. First plug interface; 15. First support member; 2. Lower mold assembly; 21. Lower mold positioning plate; 22. Lower mold sensor; 23. Bottom plate; 24. Second plug interface; 25. Guide block; 26. Second support member; 27. Positioning protrusion; 28. Positioning area; 3. Positioning assembly; 31. Guide column; 32. Guide hole; 4. Detection gap; 5. Fixing assembly; 51. Positioning column; 52. Positioning hole.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] refer to Figures 1 to 3The present application provides a flatness detection jig, which includes an upper mold assembly 1, a lower mold assembly 2 and a positioning assembly 3. The upper mold assembly 1 includes an upper mold positioning plate 11 and an upper mold sensor 12. The upper mold sensor 12 is arranged in the middle of the bottom end of the upper mold positioning plate 11. The upper mold assembly 1 is used to cover the upper part of the lower mold assembly 2. The lower mold assembly 2 includes a lower mold positioning plate 21 and a lower mold sensor 22. The lower mold positioning plate 21 has a positioning area 28. The positioning area 28 is located in the middle of the top of the lower mold positioning plate 21. The lower mold sensor 22 is arranged in the positioning area 28. The upper mold sensor 12 and the lower mold sensor 22 The upper mold sensing member 12 and the lower mold sensing member 22 have a detection gap 4. The mobile phone middle frame includes a frame and an intermediate plate arranged in the frame. The positioning area 28 is used to support the frame of the mobile phone middle frame. The detection gap 4 is used to accommodate the intermediate plate. The upper mold sensing member 12 and the lower mold sensing member 22 are respectively used to detect whether the mobile phone middle frame is convex to a first preset value and whether it is concave to a second preset value, so as to determine whether the flatness of the mobile phone middle frame is qualified; the positioning component 3 is arranged between the upper mold component 1 and the lower mold component 2, and the positioning component 3 is used to realize the alignment and positioning of the lower mold positioning plate 21 and the upper mold positioning plate 11.

[0032] The flatness detection fixture provided by the present application can easily and quickly detect whether the flatness of the mobile phone middle frame is qualified by placing the mobile phone middle frame part in the detection gap 4 through the upper mold sensor 12 and the lower mold sensor 22. Compared with manual detection, the flatness detection fixture of the present application has high detection efficiency and high detection accuracy, thereby improving the product yield of the mobile phone middle frame, saving time and effort, and saving labor costs. Specifically, the flatness detection of the mobile phone frame refers to the flatness detection of the middle plate.

[0033] Specifically, the frame of the mobile phone middle frame is arranged at the periphery of the lower mold sensing component 22 and does not contact the lower mold sensing component 22 .

[0034] Specifically, the upper mold induction member 12 and the lower mold induction member 22 are both copper plates with good electrical conductivity.

[0035] Specifically, the upper mold assembly 1 further includes a top plate 13, which is installed just above the upper mold positioning plate 11. The lower mold assembly 2 further includes a bottom plate 23, which is installed just below the lower mold positioning plate 21.

[0036] The height of the detection gap is greater than the thickness of the mobile phone middle frame by a third preset value. The mobile phone middle frame is located in the middle of the detection gap. The upper mold sensing part is used to detect whether the front side of the mobile phone middle frame is in contact with the upper mold sensing part, thereby determining whether the mobile phone middle frame is convex to the first preset value. The lower mold sensing part is used to detect whether the back side of the mobile phone middle frame is in contact with the lower mold sensing part, thereby determining whether the mobile phone middle frame is concave to the second preset value.

[0037] Specifically, the third preset value has a value range of 0.05-0.25 mm. Furthermore, the first preset value is the same as the second preset value, and the sum of the first preset value and the second preset value is equal to the third preset value.

[0038] refer to Figures 2 to 3 The upper mold assembly 1 further includes a first alarm, which is disposed on the upper mold positioning plate 11 and is electrically connected to the upper mold sensor 12. The lower mold assembly 2 further includes a second alarm, which is disposed on the lower mold positioning plate 21 and is electrically connected to the lower mold sensor 22.

[0039] Specifically, the upper mold assembly 1 also includes a first plug interface 14, which is arranged on the side of the upper mold positioning plate 11, and the first plug interface 14 is electrically connected to the upper mold sensing component 12. The lower mold assembly 2 also includes a second plug interface 24, which is arranged on the side of the lower mold positioning plate 21, and the second plug interface 24 is electrically connected to the lower mold sensing component 22.

[0040] The middle frame of the mobile phone is made of metal. One pole of the external power supply is electrically connected to the middle frame of the mobile phone, and the other pole is electrically connected to the first plug interface 14 and the second plug interface 24 respectively. Among them, the first plug interface 14, the upper mold sensor 12 and the first alarm are connected in series in sequence to form a detection branch, and the second plug interface, the lower mold sensor 22 and the second alarm are connected in series in sequence to form another detection branch, and the two detection branches are connected in parallel with each other.

[0041] Specifically, when the middle frame of the mobile phone is placed in the detection gap 4, if a part of the middle frame of the mobile phone is convex and / or a part is concave, it will then contact the upper mold sensing part 12 and / or the lower mold sensing part 22. When the convex deformed part contacts the upper mold sensing part 12, the first alarm power is turned on and a sound is made. When the concave deformed part contacts the lower mold sensing part 22, the second alarm power is turned on and a sound is made, so as to achieve the purpose of alarm.

[0042] Furthermore, the first alarm and the second alarm may be buzzers.

[0043] refer to Figure 2 The positioning assembly 3 includes a guide column 31, which is arranged at the bottom end of the upper mold positioning plate 11. The lower mold positioning plate 21 is provided with a guide hole 32. The guide column 31 is used to be inserted into the guide hole 32 to achieve alignment and positioning of the lower mold positioning plate 21 and the upper mold positioning plate 11.

[0044] refer to Figure 2 There are multiple guide columns 31, which are spaced apart at the bottom end of the upper mold positioning plate 11 and circumferentially arranged around the upper mold positioning plate 11. The lower mold positioning plate 21 is spaced apart with multiple guide holes 32, and the multiple guide holes 32 correspond one-to-one to the multiple guide columns 31.

[0045] In this embodiment, the number of the guide posts 31 is four, and the four guide posts 31 are evenly spaced and arranged at both ends of the upper mold positioning plate 11 .

[0046] Specifically, a positioning protrusion 27 is further provided on the lower mold sensing member 22. The setting position of the positioning protrusion 27 corresponds to the avoidance position of the mobile phone middle frame. The positioning protrusion 27 can realize more effective and precise positioning of the mobile phone middle frame.

[0047] refer to Figure 2 The flatness detection fixture also includes a fixing component 5, which is arranged at the bottom end of the upper mold sensor 12, and the fixing component 5 is used to fix the mobile phone middle frame relative to the upper mold sensor 12.

[0048] The fixing assembly 5 includes a plurality of positioning posts 51, and positioning holes 52 are spaced apart on the edge of the upper mold sensing member 12. The plurality of positioning posts 51 are inserted into the plurality of positioning holes 52 in a one-to-one correspondence, and the positioning posts 51 can be extended and retracted along the axial direction of the positioning holes 52. The positioning posts 51 are used to press against the front side of the mobile phone middle frame to fix the mobile phone middle frame relative to the upper mold sensing member 12.

[0049] When the mobile phone middle frame is placed above the lower mold sensor 22 and the upper mold assembly 1 is pressed onto the lower mold assembly 2, the mobile phone middle frame is located in the detection gap 4 and the positioning column 51 can retract so that the end surface of the positioning column 51 close to the mobile phone middle frame is flush with the front surface of the mobile phone middle frame, thereby fixing the mobile phone middle frame to keep it balanced and not shake.

[0050] Specifically, the positioning column 51 is made of soft rubber material, which is elastic and flexible, and can avoid scratching the middle frame of the mobile phone.

[0051] In this embodiment, the upper mold positioning plate 11 and the upper mold sensor 12 are sequentially provided with a first positioning hole and a second positioning hole that are connected to each other. The positioning column 51 includes a first positioning column and a second positioning column. The first positioning column is arranged in the first positioning hole, and the second positioning column is arranged in the second positioning hole. The second positioning column is sleeved with the first positioning column. When the second positioning column is subjected to pressure, the second positioning column can move along the axial direction of the first positioning column until the end of the second positioning column away from the mobile phone middle frame hits the upper mold positioning plate 11, and the end close to the mobile phone middle frame hits the front of the mobile phone middle frame, thereby fixing the mobile phone middle frame relative to the upper mold sensor 12.

[0052] refer to Figure 3 The lower mold assembly 2 also includes a plurality of guide blocks 25, which are spaced apart at the top of the lower mold positioning plate 21 and are arranged around the contoured positioning plate 28 to limit the middle frame of the mobile phone. The guide blocks 25 are used to cooperate with the positioning columns 51 to keep the middle frame of the mobile phone balanced during detection.

[0053] In this embodiment, the number of guide blocks 25 is six.

[0054] refer to Figure 2 and Figure 3 The upper mold assembly 1 further includes a first support member 15, which is disposed at the bottom of the upper mold positioning plate 11. The lower mold assembly 2 further includes a second support member 26, which is disposed at the top of the lower mold positioning plate 21, and the position of the second support member 26 corresponds to the position of the first support member 15. The first support member 15 and the second support member 26 cooperate to further support and align the lower mold positioning plate 21 and the upper mold positioning plate 11.

[0055] Specifically, the number of the first support members 15 and the number of the second support members 26 are both four. The four first support members 15 are respectively arranged at the four corners of the bottom of the upper mold positioning plate 11 , and the four second support members 26 are respectively arranged at the four corners of the top of the lower mold positioning plate 21 .

[0056] In this embodiment, the detection gap 4 of the present application depends on the difference between the sum of the protruding height of the first support member 15 relative to the upper mold positioning plate 11 and the protruding height of the second support member 26 relative to the lower mold positioning plate 21, and the sum of the protruding height of the upper mold sensing member 12 relative to the upper mold positioning plate 11 and the protruding height of the lower mold sensing member 22 relative to the lower mold positioning plate 22.

[0057] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A flatness detection jig, characterized in that: include: An upper die assembly, the upper die assembly comprising an upper die positioning plate and an upper die sensing member, the upper die sensing member being arranged at the bottom end of the upper die positioning plate; A lower mold assembly, wherein the upper mold assembly is used to cover the upper part of the lower mold assembly, the lower mold assembly includes a lower mold positioning plate and a lower mold sensor, the lower mold positioning plate has a positioning area, the lower mold sensor is arranged in the positioning area, the upper mold sensor corresponds to the position of the lower mold sensor, the positioning area is used to carry the mobile phone middle frame, and the upper mold sensor and the lower mold sensor have a detection gap, the detection gap is used to accommodate part of the mobile phone middle frame, the upper mold sensor is used to detect whether the mobile phone middle frame is convex to a first preset value, and the lower mold sensor is used to detect whether the mobile phone middle frame is concave to a second preset value, thereby judging whether the flatness of the mobile phone middle frame is qualified; A positioning assembly is disposed between the upper mold assembly and the lower mold assembly, and the positioning assembly is used to achieve alignment and positioning of the lower mold positioning plate and the upper mold positioning plate.

2. The flatness detection jig according to claim 1, characterized in that: The height of the detection gap is greater than the thickness of the mobile phone middle frame by a third preset value. The mobile phone middle frame is located in the middle of the detection gap. The upper mold sensor is used to detect whether the front side of the mobile phone middle frame is in contact with the upper mold sensor, thereby determining whether the mobile phone middle frame is convex to the first preset value. The lower mold sensor is used to detect whether the back side of the mobile phone middle frame is in contact with the lower mold sensor, thereby determining whether the mobile phone middle frame is concave to the second preset value.

3. The flatness detection jig according to claim 1, characterized in that: The upper mold assembly also includes a first alarm, which is arranged on the upper mold positioning plate. The upper mold sensor and the mobile phone middle frame are both made of metal, and the first alarm is electrically connected to one end of the upper mold sensor, and the other end of the upper mold sensor is used to be connected to one pole of a power supply, and the other pole of the power supply is used to be electrically connected to the mobile phone middle frame.

4. The flatness detection jig according to claim 3, characterized in that: The lower mold assembly also includes a second alarm, which is arranged on the lower mold positioning plate. The lower mold sensor is made of metal. The second alarm is electrically connected to one end of the lower mold sensor, and the other end of the lower mold sensor is used to be electrically connected to one pole of the power supply.

5. The flatness detection jig according to claim 4, characterized in that: The upper mold assembly also includes a first plug interface, which is arranged on the side of the upper mold positioning plate and is electrically connected to the upper mold sensing component. The lower mold assembly also includes a second plug interface, which is arranged on the side of the lower mold positioning plate and is electrically connected to the lower mold sensing component.

6. The flatness detection jig according to claim 1, characterized in that: The upper mold assembly also includes a top plate, which is arranged directly above the upper mold positioning plate. The lower mold assembly also includes a bottom plate, which is arranged directly below the lower mold positioning plate.

7. The flatness detection jig according to claim 1, characterized in that: The lower mold assembly also includes a positioning protrusion, which is arranged on the lower mold sensing member, and the position of the positioning protrusion corresponds to the air avoidance position of the mobile phone middle frame.

8. The flatness detection jig according to claim 1, characterized in that: The positioning assembly includes a guide column, which is arranged at the bottom end of the upper mold positioning plate. The lower mold positioning plate is provided with a guide hole, and the guide column is used to be inserted into the guide hole to achieve alignment and positioning of the lower mold positioning plate and the upper mold positioning plate.

9. The flatness detection jig according to claim 8, characterized in that: There are multiple guide columns, which are spaced apart at the bottom end of the upper mold positioning plate and circumferentially arranged around the upper mold positioning plate. The lower mold positioning plate is spaced apart with multiple guide holes, and the multiple guide holes correspond one-to-one to the multiple guide columns.

10. The flatness detection jig according to claim 3, characterized in that: The flatness detection jig also includes a fixing component, which is arranged at the bottom end of the upper mold sensing component, and the fixing component is used to fix the mobile phone middle frame relative to the upper mold sensing component.

11. The flatness detection jig according to claim 10, characterized in that: The fixing assembly includes a positioning column, the upper mold sensing component is provided with a positioning hole, the positioning column is inserted into the positioning hole, and the positioning column can be extended and retracted along the axial direction of the positioning hole, and the positioning column is used to press against the front side of the mobile phone middle frame to achieve the fixation of the mobile phone middle frame relative to the upper mold sensing component.

12. The flatness detection jig according to claim 11, characterized in that: There are multiple positioning posts, and the upper mold sensing component is provided with multiple positioning holes at intervals, and the multiple positioning posts correspond to the positioning holes one by one.

13. The flatness detection jig according to claim 1, characterized in that: The lower die assembly further comprises a plurality of guide blocks, which are arranged at intervals on the top end of the lower die positioning plate and are arranged around the four sides of the lower die positioning plate.

14. The flatness detection jig according to claim 1, characterized in that: The upper mold assembly also includes a first support member, which is arranged at the bottom of the upper mold positioning plate. The lower mold assembly also includes a second support member, which is arranged at the top of the lower mold positioning plate, and the position of the first support member corresponds to the position of the second support member.

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