A firing jig and a method for preparing a micro connector based on the firing jig

Abstract

The present invention discloses a firing jig and a method for preparing a micro connector based on the firing jig, and relates to the field of mechanical processing technology. The firing jig includes a carrier plate, and the carrier plate is made of a porcelain plate; a side surface of the carrier plate is provided with a plurality of strip grooves arranged parallel to each other, and the spacing between each two adjacent strip grooves is the same, and the spacing between two adjacent strip grooves is 4mm; the width of the strip groove is 1.35-1.65mm, and the depth of the strip groove is 5.20-5.40mm; the thickness of the carrier plate is greater than the depth of the strip groove. The present invention can solve the problem that the existing micro connector green body is deformed during the sintering process, resulting in the need for subsequent manual correction.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing technology, and in particular to a firing jig and a method for preparing a micro connector based on the firing jig. Background Art

[0002] In recent years, with the development of social economy and science and technology, the electronics industry has achieved unprecedented development and has become an important driving force for the development of the national economy. Electronic products have gradually become an indispensable part of people's daily lives and have had a profound impact on people's lives.

[0003] For the electronic products industry, in order to meet the needs of data exchange, electronic devices all provide USB interfaces, whether PCs, tablets, mobile phones or even display devices, almost without exception, have USB interfaces. However, due to the limitations of technical standards, USB plugs have "directionality". When the USB plug is inserted into the interface, if the direction is wrong, it will either not be inserted or the interface or connector will be damaged. In this case, the type-c interface appeared on the market. Since it can be inserted in both directions, users no longer have to worry about the problem of wrong insertion.

[0004] However, due to the micro and complex structure of the Type-C interface, coupled with high dimensional accuracy requirements, the production difficulty is relatively high, resulting in low production efficiency. At present, the traditional process can only be processed using CNC, which has low production capacity and high cost. The use of metal powder injection molding (MIM) technology for processing can achieve high production capacity and low cost, greatly improving production efficiency. However, metal powder molding is prone to cause product irregularities during the sintering process, resulting in difficulties in later correction, thus affecting product production efficiency. Summary of the invention

[0005] In order to solve the problems of the prior art, an embodiment of the present invention provides a firing jig and a method for preparing a micro connector based on the firing jig. The technical solution is as follows:

[0006] In a first aspect, a firing jig is provided, comprising a bearing plate, wherein the bearing plate is made of a porcelain plate;

[0007] A plurality of strip grooves are arranged parallel to each other on one side of the carrier plate, and the spacing between each two adjacent strip grooves is the same, and the spacing between two adjacent strip grooves is 4 mm;

[0008] The width of the strip groove is 1.35-1.65 mm, and the depth of the strip groove is 5.20-5.40 mm;

[0009] The thickness of the carrying plate is greater than the depth of the strip groove.

[0010] In one embodiment, the width of the strip-shaped groove is 1.50 mm, and the depth of the strip-shaped groove is 5.30 mm.

[0011] In one embodiment, the components of the ceramic plate, in terms of mass percentage, include: Al 2 O 3 ≥99%,SiO 2 ≤0.20%,NaO 2 :0.08-0.15%,Fe 2 O 3 : 0.05-0.10%, MgO≤0.10%.

[0012] In one embodiment, the thickness of the carrying plate is 8-9 mm, and the distance between the strip grooves close to the two side edges of the carrying plate and the edge of the carrying plate is 2.50-2.70 mm.

[0013] In one embodiment, the strip-shaped groove is rectangular.

[0014] In a second aspect, a method for preparing a micro connector based on a firing jig is provided, and the firing jig according to any one of the above embodiments comprises the following steps:

[0015] Place the carrier plate on the workbench and adjust the position of the carrier plate;

[0016] Take the green miniature connectors and place them into the strip grooves of the carrier plate in sequence;

[0017] Placing the carrier plate and the green compact of the micro connector disposed on the carrier plate into a sintering furnace for sintering;

[0018] After sintering is completed, the carrier plate is taken out, and the sintered micro connector green body is removed from the carrier plate.

[0019] In one embodiment, the workbench is provided with a positioning slot, and the carrying plate is arranged in the positioning slot;

[0020] After the carrying plate is disposed in the positioning slot, the edge of the carrying plate is attached to the edge of the positioning slot.

[0021] In one embodiment, the step of removing the carrier plate and removing the sintered micro connector green body from the carrier plate comprises:

[0022] Use a robot to take the carrier plate out of the sintering furnace and place it on the positioning slot of the workbench;

[0023] After the temperature of the micro connector sintered part is lowered, the micro connector sintered part is removed.

[0024] In one embodiment, the sintering temperature in the sintering furnace is 1200-1300°C.

[0025] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0026] In the embodiment of the present invention, the micro connector blank can be set into the strip groove on the carrier plate through the carrier plate and the strip groove set on the carrier plate, so that a plurality of micro connector blanks placed on the carrier plate can be sintered at the same time. After that, by limiting the width and depth of the strip groove, after the micro connector is inserted into the strip groove, the strip groove can form a certain restriction on the micro connector, thereby preventing the product from being deformed during the subsequent sintering process, so that after sintering, the micro connector can maintain its original shape, avoiding the need for manual correction of deformation in the later stage, effectively saving manpower, reducing production costs, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 1 is a schematic diagram of a top view of the structure of a support plate of a firing fixture provided by an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the side view structure of the bearing plate of the firing fixture provided by an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of a micro connector provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end" and the like used in this application to indicate spatial relative positions are used to describe the relationship of a unit or feature relative to another unit or feature as shown in the accompanying drawings for the purpose of convenience of explanation. Terms of spatial relative position may be intended to include different orientations of the device in use or work other than the orientation shown in the figure. For example, if the device in the figure is turned over, the unit described as being "below" or "below" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein are interpreted accordingly.

[0032] In addition, the terms "installed", "set", "provided with", "connected", "slidingly connected", "fixed", and "sleeved" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] An embodiment of the present invention provides a firing jig for carrying a micro connector green body, so that the firing jig and the micro connector green body set on the firing jig are placed together in a sintering furnace for sintering, thereby effectively preventing the micro connector green body from being deformed during the sintering process.

[0034] like Figure 1 and Figure 2 As shown, the firing jig includes a carrier plate 1, which is made of a porcelain plate. A plurality of strip grooves 2 arranged parallel to each other are arranged on one side surface of the carrier plate 1. The spacing between each two adjacent strip grooves 2 is the same, and the spacing between two adjacent strip grooves 2 is 4 mm. The width of the strip groove 2 is 1.35-1.65 mm, and the depth of the strip groove 2 is 5.20-5.40 mm. In addition, the thickness of the carrier plate 1 is greater than the depth of the strip groove 2, that is, the strip groove 2 does not penetrate the carrier plate 1.

[0035] Combination Figure 3As shown, the micro connector includes a positioning piece structure 31 and a plug-in piece structure 32, and the positioning piece and the plug-in piece structure 32 are vertically fixedly connected to each other. Through the setting of the above-mentioned firing jig, when the micro connector needs to be sintered, the micro connector can be inserted into the strip groove 2 of the carrier plate 1. At this time, the positioning piece structure 31 of the micro connector can be snapped into the upper end surface of the strip groove 2, and due to the setting of the spacing between adjacent strip grooves 2, interference between micro connectors placed in adjacent strip grooves 2 can be avoided. In addition, due to the setting of the width and depth of the strip groove 2, after the micro connector is plugged into the strip groove 2, the strip groove 2 can form a certain restriction on the plug-in piece structure 32 of the micro connector, thereby preventing the occurrence of product abnormalities during the subsequent sintering of the micro connector, so that the micro connector can maintain its original shape, good consistency, avoid manual correction of deformation in the later stage, and improve productivity. Moreover, by using this kind of firing jig, micro connector green billets can be placed at the same time for sintering, thereby increasing the number of green billets sintered at one time, further improving production efficiency.

[0036] The width of the strip groove 2 is 1.50 mm, the depth of the strip groove 2 is 5.30 mm, and the cross section of the strip groove 2 is rectangular. By setting the strip groove 2 to the above width and depth, the micro connector can be more accurately limited, further avoiding the occurrence of large irregular shapes during the sintering process of the micro connector green body. In addition, for the micro connector green body with larger production specifications, it cannot be inserted into the strip groove 2, so that some products that do not meet the specifications can be screened out and such products can be processed in time.

[0037] In addition, the components of the above-mentioned porcelain plate, in terms of mass percentage, include: Al2O3≥99%, SiO2≤0.20%, NaO2: 0.08-0.15%, Fe2O3: 0.05-0.10%, MgO≤0.10%.

[0038] The ceramic plate prepared by this chemical composition as the carrier plate 1 can have better high temperature resistance, so that the carrier plate 1 can maintain its original shape at a high temperature of 1300-1600°C, thereby further avoiding the carrier plate 1 from deforming during the sintering of the micro connector. At the same time, the ceramic plate can also have good bending strength and impact resistance, with the bending strength being not less than 200Mpa and the thermal shock resistance being not less than 50 times. In addition, by adding a small amount of MgO, the density of the prepared ceramic plate can be relatively increased, thereby making the overall performance of the carrier plate 1 more excellent.

[0039] In one embodiment, the thickness of the above-mentioned supporting plate 1 is 8-9 mm, and the distance between the strip grooves 2 near the two side edges of the supporting plate 1 and the edge of the supporting plate 1 is 2.50-2.70 mm. Specifically, the thickness of the supporting plate 1 is set to 8 mm, and the distance between the strip grooves 2 near the two side edges of the supporting plate 1 and the edge of the supporting plate 1 is 2.50 mm. For example, the distance between the strip groove 2 near the leftmost side of the supporting plate 1 and the left edge of the supporting plate 1 is 2.50 mm.

[0040] Through this arrangement, while ensuring that the carrier plate 1 can be effectively connected to the micro-connector for carrying, the material loss of the carrier plate 1 can be relatively reduced, a certain amount of material can be saved, and the corner position of the carrier plate 1 can be prevented from being too large to affect the subsequent placement of the carrier plate 1 in the sintering furnace for sintering. In addition, the thickness is set to 8mm, which prevents the strip groove 2 from penetrating the carrier plate 1, and also facilitates the temperature to be transmitted to the micro-connector green body through the carrier plate 1, so as to better sinter it.

[0041] Based on the same technical concept, the embodiment of the present disclosure also provides a method for preparing a micro connector based on a firing jig, which is applied to the firing jig involved in the above embodiment. The method includes the following steps:

[0042] In step S11 , a carrying plate is placed on a workbench and the position of the carrying plate is adjusted.

[0043] Among them, a positioning slot is provided on the workbench, and the carrier plate can be set in the positioning slot. After the carrier plate is set in the positioning slot, the edge of the carrier plate is attached to the edge of the positioning slot. Therefore, in the above steps, the carrier plate can be placed in the positioning slot of the workbench by a manipulator to locate the position of the carrier plate, so as to facilitate the subsequent placement of the micro connector blank on the carrier plate, while preventing the position of the carrier plate from changing.

[0044] In step S12, the green miniature connectors are taken and placed in the strip grooves of the carrier plate in sequence.

[0045] In this step, after the position of the carrier plate is fixed, the robot can be used to place the micro connector blanks into the strip grooves of the carrier plate one by one to realize automated robot placement, which can facilitate the placement of the micro connectors one by one and reduce labor costs.

[0046] In step S13, the carrier plate and the green miniature connector disposed on the carrier plate are placed in a sintering furnace for sintering.

[0047] After the micro connector green body is completely placed on the carrier plate by the robot, the robot can continue to pick up the carrier plate and place it in the sintering furnace to complete the subsequent steps of sintering the micro connector green body.

[0048] In step S14, after sintering is completed, the carrier plate is taken out, and the sintered micro connector green body is removed from the carrier plate.

[0049] Among them, in the above step S13, the sintering temperature in the sintering furnace is 1200-1300°C. At this temperature, the micro connector green body can be effectively sintered without causing certain damage or deformation to the sintering jig.

[0050] In a further embodiment, the step of removing the carrier plate and removing the sintered micro connector green body from the carrier plate comprises:

[0051] Step S141, taking the carrier plate out of the sintering furnace by using a robot and placing it on the positioning slot of the workbench;

[0052] Step S142, after the temperature of the micro connector sintered part is lowered, the sintered part of the micro connector is removed by a robot.

[0053] In this way, the firing jig is first positioned and fixed, and then the micro connector green sheets are neatly placed one by one into the strip groove 2 of the carrier plate 1 by a robot, so as to realize automatic placement of the products. After the placement is completed, the firing jig is again input into the sintering furnace by the robot for sintering. After the sintering is completed, the firing jig is taken out by the robot and the micro connector sintered parts are collected, which relatively reduces manpower output, reduces production costs, and greatly improves production efficiency.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A firing fixture, characterized in that: It includes a bearing plate, wherein the bearing plate is made of a porcelain plate; A plurality of strip grooves are arranged parallel to each other on one side of the carrier plate, and the spacing between each two adjacent strip grooves is the same, and the spacing between two adjacent strip grooves is 4 mm; The width of the strip groove is 1.35-1.65 mm, and the depth of the strip groove is 5.20-5.40 mm; The thickness of the bearing plate is 8-9 mm, and the distance between the strip grooves close to the two side edges of the bearing plate and the edge of the bearing plate is 2.50-2.70 mm; The thickness of the carrying plate is greater than the depth of the strip groove; The components of the porcelain plate, in terms of mass percentage, include: Al2O3≥99%, SiO2≤0.20%, NaO2: 0.08-0.15%, Fe2O3: 0.05-0.10%, MgO≤0.10%.

2. The firing jig according to claim 1, characterized in that: The width of the strip groove is 1.50 mm, and the depth of the strip groove is 5.30 mm.

3. The firing jig according to claim 1, characterized in that: The strip groove is rectangular.

4. A method for preparing a micro connector based on a firing jig, based on the firing jig according to any one of claims 1 to 3, characterized in that: The following steps are involved: Place the carrier plate on the workbench and adjust the position of the carrier plate; Take the green miniature connectors and place them into the strip grooves of the carrier plate in sequence; Placing the carrier plate and the green compact of the micro connector disposed on the carrier plate into a sintering furnace for sintering; After sintering is completed, the carrier plate is taken out, and the sintered micro connector green body is removed from the carrier plate.

5. The method according to claim 4, characterized in that The workbench is provided with a positioning slot hole, and the carrying plate is arranged in the positioning slot hole; After the carrying plate is disposed in the positioning slot, the edge of the carrying plate is attached to the edge of the positioning slot.

6. The method according to claim 5, characterized in that The step of taking out the carrier plate and removing the sintered micro connector green body from the carrier plate comprises: Use a robot to take the carrier plate out of the sintering furnace and place it on the positioning slot of the workbench; After the temperature of the micro connector sintered part is lowered, the micro connector sintered part is removed.

7. The method according to claim 4, characterized in that The sintering temperature in the sintering furnace is 1200-1300°C.

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