Middle frame machining jig

Abstract

The utility model discloses a middle frame machining jig, and belongs to the technical field of positioning tools. The first profiling jig is provided with a first working face, a first positioning protrusion and a negative pressure positioning assembly are arranged on the first working face, the first positioning protrusion is used for clamping a middle frame, and the negative pressure positioning assembly is used for adsorbing and fixing an injection molding water gap cutting structure of the middle frame; the second profiling jig is provided with a second working face, a second positioning protrusion is arranged on the second working face, and the second positioning protrusion is used for being connected with the middle frame in a clamping mode; the overturning assembly is used for switching the middle frame between the first profiling jig and the second profiling jig so as to switch the orientations of the two surfaces of the middle frame; according to the utility model, the positioning bulge is used for directly fixing the middle frame at one time, and the negative pressure positioning component is used for adsorbing and fixing the injection molding water gap cutting structure connected with the middle frame, so that the stability of the middle frame during processing is effectively ensured, the middle frame is prevented from being misplaced, the processing precision is ensured, and the number of defective products is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning tooling, in particular to a middle frame processing jig. Background Art

[0002] The middle frame is an important part of the production process of electronic devices such as mobile phones or computers. It refers to the frame of the mobile phone, connecting the front panel and the back cover of the mobile phone, and plays a role in supporting and protecting the internal structure of the mobile phone. The middle frame is usually made of metal or plastic materials. During the injection molding process of the middle frame, an injection cutout structure will be left, which is connected to the middle frame and can be separated later by ultrasonic vibration. The middle frame is mainly engraved with patterns or numbers using laser engraving equipment, and it often needs to be engraved on both the front and back.

[0003] In the prior art, for the engraving operation of the middle frame, the workers usually place it on a positioning jig and then directly perform the engraving operation. For the engraving on the front and back sides, the workers manually flip it over or a robot flips it over. However, when placing the middle frame on the positioning jig, it is usually clamped, and its fixing accuracy is low. In addition, during the operation of the laser engraving equipment, the middle frame is easily misaligned, resulting in a large number of defective products. For this reason, we propose a middle frame processing jig. Utility Model Content

[0004] The utility model aims to solve the problem of low positioning and fixing accuracy of a positioning fixture for a middle frame in the prior art, and proposes a middle frame processing fixture.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A middle frame processing jig, comprising: a first profiling jig, the first profiling jig having a first working surface, a first positioning protrusion and a negative pressure positioning component being arranged on the first working surface, the first positioning protrusion being used for clamping the middle frame, when the middle frame is placed on the first profiling jig, the first surface of the middle frame faces the first working surface, and the negative pressure positioning component is used for adsorbing and fixing the injection molding water cutout structure of the middle frame;

[0007] A second profiling jig, wherein the second profiling jig has a second working surface, a second positioning protrusion is provided on the second working surface, and the second positioning protrusion is used to clamp the middle frame; when the middle frame is placed on the second profiling jig, the second surface of the middle frame faces the second working surface; and a flip assembly, wherein the flip assembly is used to switch the middle frame between the first profiling jig and the second profiling jig.

[0008] Preferably, the flip assembly has a flip angle of 180°, and is used for flipping the middle frame between the first profiling jig and the second profiling jig.

[0009] In order to facilitate grabbing and switching the front and back sides of the middle frame, preferably, the flip assembly includes a flip plate and wing plates fixedly connected to both sides of the flip plate, and a negative pressure suction head is slidably connected to the wing plate, and the working end of the negative pressure suction head cooperates with the injection molding water cutting structure.

[0010] In order to improve the grasping accuracy of the water-cutting injection molding structure on the centering frame, the negative pressure suction head further includes: a locking piece slidably connected to the wing plate; a negative pressure guide tube that passes through the wing plate, and the negative pressure guide tube slidably cooperates with the locking piece, wherein one end of the negative pressure guide tube is fixedly connected to a telescopic suction head, and the working end of the telescopic suction head cooperates with the injection molding water-cutting structure, a spring is sleeved on the negative pressure guide tube, one end of the spring is connected to one end of the negative pressure guide tube, and the other end of the spring is connected to the locking piece; a second negative pressure connector threadedly connected to the locking piece, and a connecting head is provided on the second negative pressure connector, and the second negative pressure connector is communicated with the negative pressure guide tube.

[0011] In order to apply to more types of middle frame processing, further, the locking member includes an adjusting cylinder, a limiting nut is threadedly connected to the adjusting cylinder, and one end of the negative pressure guide cylinder is slidably connected in the adjusting cylinder.

[0012] Wherein, a long slot is provided on the wing plate, and the long slot runs through both sides of the wing plate, and the adjusting tube and the limiting nut are respectively located at the two end surfaces of the long slot.

[0013] Furthermore, a through slot is formed on the second profiling jig, and the through slot corresponds to the wing plate.

[0014] Furthermore, the wing plates are provided in multiple groups, and the multiple groups of wing plates are symmetrically arranged on both sides of the flip plate.

[0015] Furthermore, it also includes a connecting plate, which is fixedly connected to one end of the flip plate.

[0016] In order to improve the fixing accuracy of the centering frame, preferably, the negative pressure positioning assembly includes a negative pressure suction head, and the negative pressure suction head cooperates with the injection molding water cutting structure, wherein a negative pressure channel is opened inside the first profiling jig, and a positioning hole connected to the negative pressure channel is opened on the top surface of the first profiling jig, and the negative pressure suction head is installed in the positioning hole.

[0017] Furthermore, a first negative pressure connector is installed on the side of the first profiling jig, and a first negative pressure connector is installed on the side of the first profiling jig, and the first negative pressure connector is connected to the negative pressure channel.

[0018] Compared with the prior art, the utility model provides a middle frame processing jig, which has the following beneficial effects:

[0019] The middle frame processing jig cooperates with the injection molding water cut-out structure through the working end of the negative pressure suction head, and is used to suck the injection molding water cut-out structure for flipping. This method can ensure that the middle frame will not be scratched or broken when switching, and effectively ensure the processing yield rate; and the injection molding water cut-out structure can be adsorbed by the negative pressure suction head, thereby ensuring that the middle frame is prevented from being dislocated during the laser engraving process, making the processing accuracy of the middle frame more stable and precise.

[0020] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model uses the positioning protrusions on the first profiling jig and the second profiling jig to directly fix the middle frame once, and uses the negative pressure positioning component to perform secondary adsorption and fixation on the injection molding cutting nozzle structure connected to the middle frame, thereby effectively ensuring the stability of the middle frame during processing, preventing the middle frame from being dislocated, ensuring processing accuracy, greatly reducing the number of defective products, and can process two middle frames at the same time according to needs, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a plan view of a middle frame processing jig proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first profiling jig of the middle frame processing jig proposed by the utility model Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the structure of the first profiling jig of the middle frame processing jig proposed by the utility model Figure 2 ;

[0024] Figure 4 A middle frame processing jig proposed by the utility model Figure 3 Schematic diagram of the structure of part A;

[0025] Figure 5 This is a structural schematic diagram of a second profiling jig of a middle frame processing jig proposed by the utility model;

[0026] Figure 6 This is a structural schematic diagram of a middle frame processing jig flip assembly proposed by the utility model;

[0027] Figure 7 This is a structural schematic diagram of a negative pressure suction head of a middle frame processing fixture proposed by the utility model.

[0028] In the figure: 1. first profiling fixture; 2. negative pressure channel; 201. positioning hole; 202. negative pressure suction head; 203. first negative pressure joint; 3. positioning protrusion; 4. second profiling fixture; 401. through groove; 5. flip plate; 501. connecting plate; 502. wing plate; 503. long groove; 6. negative pressure guide tube; 601. spring; 7. telescopic suction head; 701. second negative pressure joint; 702. connecting head; 703. adjusting tube; 704. limiting nut; 8. middle frame; 9. injection molding water cutting structure. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] Example:

[0032] Reference Figure 1-Figure 7 A middle frame processing jig comprises: a first profiling jig 1, wherein the first profiling jig 1 has a first working surface, a first positioning protrusion and a negative pressure positioning component are arranged on the first working surface, the first positioning protrusion is used to clamp the middle frame, when the middle frame is placed on the first profiling jig, the first surface of the middle frame faces the first working surface, and the negative pressure positioning component is used to adsorb and fix the injection molding water cutout structure of the middle frame; a second profiling jig 4, wherein the second profiling jig 4 has a second working surface, a second positioning protrusion is arranged on the second working surface, and the second positioning protrusion is used to clamp the middle frame; when the middle frame is placed on the second profiling jig, the second surface of the middle frame faces the second working surface; a flipping component, wherein the flipping component is used to switch the middle frame between the first profiling jig and the second profiling jig.

[0033] The shape of the positioning protrusions 3 (the first positioning protrusion and the second positioning protrusion) is consistent with and fits with the inner shape of the middle frame 8, and is used to clamp the middle frame 8, and fix the middle frame 8 placed on the first profiling fixture 1 and the second profiling fixture 4, and preliminarily ensure the processing accuracy. The first profiling fixture 1 is provided with a negative pressure positioning component, which is used to adsorb and fix the injection molding water cut structure 9. Since the injection molding water cut structure 9 is fixedly connected to the middle frame 8, and the injection molding water cut structure 9 is a non-essential structural component, it can be ignored that it is damaged, so the negative pressure positioning component The component can firmly absorb the injection molding water cut structure 9 to further ensure the stability and processing accuracy of the entire middle frame 8 during the laser engraving process; in addition, the flip component can grab the injection molding water cut structure 9 to switch the middle frame 8 between the first profiling jig 1 and the second profiling jig 4, so that when the middle frame is placed on the first profiling jig 1, the first surface of the middle frame faces the first working surface, and when the middle frame is placed on the second profiling jig 4, the second surface of the middle frame faces the second working surface, thereby completing the front and back processing of the middle frame 8.

[0034] Through the above design, the middle frame 8 is directly fixed once by using the positioning protrusion 3, and the injection cutting nozzle structure 9 connected to the middle frame 8 is forced to be fixed for a second time by using the negative pressure positioning component, thereby effectively ensuring the stability of the middle frame 8 during processing, preventing the middle frame 8 from being misplaced, ensuring the processing accuracy, greatly reducing the number of defective products, and two middle frames 8 can be processed at the same time according to needs, thereby improving work efficiency.

[0035] The flip assembly has a flip angle of 180°, which is used to flip the middle frame 8 between the two sets of contoured jigs. The entire flip assembly includes a flip plate 5 and wing plates 502 fixedly connected to both sides of the flip plate 5. A negative pressure suction head is slidably connected to the wing plate 502. The working end of the negative pressure suction head cooperates with the injection molding water cutting structure 9 to suck the injection molding water cutting structure 9 for flipping. This method can ensure that the middle frame 8 will not be scratched, broken, etc. when switching, effectively ensuring the processing yield.

[0036] The negative pressure suction head includes: a locking piece slidably connected to the wing plate 502; a negative pressure guide tube 6 that passes through the wing plate 502, and the negative pressure guide tube 6 is slidably matched with the locking piece, wherein one end of the negative pressure guide tube 6 is fixedly connected to a telescopic suction head 7, and the working end of the telescopic suction head 7 cooperates with the injection molding water cutting structure 9, and a spring 601 is sleeved on the negative pressure guide tube 6, one end of the spring 601 is connected to one end of the negative pressure guide tube 6, and the other end of the spring 601 is connected to the locking piece; a second negative pressure connector 701 is threadedly connected to the locking piece, and a connector 702 is provided on the second negative pressure connector 701, and the second negative pressure connector 701 is connected to the negative pressure guide tube 6.

[0037] In addition, the locking part includes an adjusting cylinder 703, which is threadedly connected with a limiting nut 704, and one end of the negative pressure guide cylinder 6 is slidably connected in the adjusting cylinder 703, wherein a long groove 503 is opened on the wing plate 502, and the adjusting cylinder 703 and the limiting nut 704 are respectively located at the two end surfaces of the long groove 503. By rotating and loosening the adjusting cylinder 703 or the limiting nut 704, the position of the negative pressure guide cylinder 6 on the wing plate 502 can be adjusted, and then timely adjusted according to the size of the fixture and the middle frame 8, effectively improving the versatility of the entire work.

[0038] The second profiling jig 4 is provided with a through slot 401 , which corresponds to the wing plate 502 . After turning over, it can be ensured that the structure of the second profiling jig 4 will not affect the sinking of the wing plate 502 .

[0039] Here, the wing plates 502 are provided in multiple groups, preferably four groups, and the four groups of wing plates 502 are symmetrically arranged on both sides of the flip plate 5, so that multiple middle frames 8 can be processed at one time, which greatly improves the processing efficiency.

[0040] It also includes a connecting plate 501, which is fixedly connected to one end of the flip plate 5. The flip assembly can be fixed on the robot through the connecting plate 501 to achieve flipping of the center frame 8, thereby ensuring the precision processing of the front and back surfaces of the center frame 8.

[0041] The negative pressure positioning component includes a negative pressure suction head 202, which cooperates with the injection molding water cut-off structure 9, wherein a negative pressure channel 2 is provided inside the first profiling jig 1, and a positioning hole 201 connected to the negative pressure channel 2 is provided on the top surface of the first profiling jig 1, and the negative pressure suction head 202 is installed in the positioning hole 201. A first negative pressure connector 203 is installed on the side of the first profiling jig 1, and the first negative pressure connector 203 is connected to the negative pressure channel 2. The injection molding water cut-off structure 9 can be adsorbed by the negative pressure suction head 202, thereby ensuring that the middle frame 8 is prevented from being misaligned during the laser engraving process, so that the processing accuracy of the middle frame 8 is more stable and more precise.

[0042] In the utility model, the flip plate 5 driven by the robot arm grabs the middle frame 8 with four negative pressure suction heads through the wing plates 502 symmetrically arranged on both sides of the flip plate 5, and flips from the first profiling jig 1 to the second profiling jig 4, thereby completing the front and back processing of the middle frame 8, with accurate grabbing and high work efficiency.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A middle frame processing jig, characterized in that: include: A first profiling jig (1), the first profiling jig (1) having a first working surface, the first working surface being provided with a first positioning protrusion and a negative pressure positioning component, the first positioning protrusion being used for clamping a middle frame, when the middle frame is placed on the first profiling jig (1), the first surface of the middle frame faces the first working surface, and the negative pressure positioning component is used for adsorbing and fixing the injection molding water cutout structure of the middle frame; A second profiling jig (4), the second profiling jig (4) having a second working surface, a second positioning protrusion being provided on the second working surface, the second positioning protrusion being used for clamping the middle frame; when the middle frame is placed on the second profiling jig (4), the second surface of the middle frame faces the second working surface; A flipping assembly, wherein the flipping assembly is used to switch the middle frame between the first profiling jig (1) and the second profiling jig (4).

2. A middle frame processing jig according to claim 1, characterized in that: The flipping assembly has a flipping angle of 180° and is used for flipping the middle frame (8) between the first profiling jig (1) and the second profiling jig (4).

3. A middle frame processing jig according to claim 1 or 2, characterized in that: The flip assembly comprises a flip plate (5) and wing plates (502) fixedly connected to both sides of the flip plate (5); a negative pressure suction head is slidably connected to the wing plate (502); and a working end of the negative pressure suction head cooperates with the injection molding water cutting structure (9).

4. A middle frame processing jig according to claim 3, characterized in that: The negative pressure suction head comprises: A locking member slidably connected to the wing plate (502); A negative pressure guide tube (6) passes through the wing plate (502), and the negative pressure guide tube (6) is slidably matched with the locking member. One end of the negative pressure guide tube (6) is fixedly connected to a telescopic suction head (7), the working end of the telescopic suction head (7) cooperates with the injection molding water cut-off structure (9), a spring (601) is sleeved on the negative pressure guide tube (6), one end of the spring (601) is connected to one end of the negative pressure guide tube (6), and the other end of the spring (601) is connected to the locking member; A second negative pressure connector (701) is threadedly connected to the locking member, a connector (702) is provided on the second negative pressure connector (701), and the second negative pressure connector (701) is in communication with the negative pressure guide tube (6).

5. A middle frame processing jig according to claim 4, characterized in that: The locking member comprises an adjusting cylinder (703), a limiting nut (704) is threadedly connected to the adjusting cylinder (703), and one end of the negative pressure guide cylinder (6) is slidably connected in the adjusting cylinder (703). The wing plate (502) is provided with a long slot (503), the long slot (503) runs through both sides of the wing plate (502), and the adjustment tube (703) and the limiting nut (704) are respectively located at the two end surfaces of the long slot (503).

6. The middle frame processing jig according to claim 3, characterized in that: The second profiling jig (4) is provided with a through slot (401), and the through slot (401) corresponds to the wing plate (502).

7. The middle frame processing jig according to claim 3, characterized in that: The wing plates (502) are provided in multiple groups, and the multiple groups of wing plates (502) are symmetrically arranged on both sides of the flip plate (5).

8. The middle frame processing jig according to claim 3, characterized in that: It also comprises a connecting plate (501), wherein the connecting plate (501) is fixedly connected to one end of the flip plate (5).

9. The middle frame processing jig according to claim 1, characterized in that: The negative pressure positioning assembly comprises a negative pressure suction head (202), and the negative pressure suction head (202) cooperates with the injection molding water cut-off structure (9). The first profiling jig (1) has a negative pressure channel (2) formed inside, the top surface of the first profiling jig (1) has a positioning hole (201) connected to the negative pressure channel (2), and the negative pressure suction head (202) is installed in the positioning hole (201).

10. A middle frame processing jig according to claim 9, characterized in that: A first negative pressure connector (203) is installed on the side of the first profiling fixture (1), and the first negative pressure connector (203) is connected to the negative pressure channel (2).

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