CN210429753U - Preheating device of matrix rectification electronic product - Google Patents
Preheating device of matrix rectification electronic product Download PDFInfo
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- CN210429753U CN210429753U CN201921560418.2U CN201921560418U CN210429753U CN 210429753 U CN210429753 U CN 210429753U CN 201921560418 U CN201921560418 U CN 201921560418U CN 210429753 U CN210429753 U CN 210429753U
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Abstract
The utility model discloses a matrix rectification electronic product's preheating device, including bottom support, lower heating platform and last heating platform, lower heating platform passes through the bolt and installs on the support of bottom, and is provided with the heating rod down on the heating platform, and the equal fixed mounting in four corners of lower heating platform has the guide post, goes up heating platform slidable mounting on the guide post, and the vertical lift cylinder of installing in bottom support below, the piston rod of lift cylinder pass down behind the heating platform with last heating platform's bottom be connected, the utility model provides a preheating mode can influence the technical problem of electron product performance among the prior art.
Description
Technical Field
The utility model relates to an electronic product packaging technology field especially relates to a matrix rectification electronic product's pre-heating device.
Background
In the field of electronic product packaging, a matrix rectifier bridge product is divided into preheating and non-preheating before packaging, and most of the preheating methods in the industry set the temperature of a preheating table according to the temperature of a plastic packaging mold, then directly place a material carrying frame on the preheating table, and then place the product to be packaged on the material carrying frame one by one for preheating, so that a frame piece and a crystal grain carried by the frame piece can be heated to a high temperature of more than 150 ℃ from room temperature in a short time, the crystal grain is instantaneously subjected to thermal stress impact caused by self and frame thermal expansion, the frame can generate different degrees of oxidation due to inconsistent preheating time, and the preheating mode is long and difficult to control, so that the frame is generally seriously oxidized, the bonding force with the plastic packaging material is poor, and hidden dangers such as poor air tightness, poor reliability and the like are caused. If not preheated, the frame sheet is pressed due to thermal expansion factors, namely, a die is pressed on the surface of a lead wire during plastic package, and meanwhile, the crystal grains are subjected to thermal stress impact caused by self and frame thermal expansion instantly, so that hidden dangers such as poor air tightness, reliability and the like can be generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a matrix rectification electronic product's preheating device has solved the technical problem that preheating mode among the prior art can influence the electronic product performance.
The utility model provides a matrix rectification electronic product's preheating device, includes bottom support, lower heating platform and goes up heating platform, down the heating platform passes through the bolt and installs on the support of bottom, and is provided with the heating rod down on the heating platform, the equal fixed mounting in four corners of lower heating platform has the guide post, it installs on the guide post to go up heating platform slidable mounting, the vertical lift cylinder of installing in bottom support below, the piston rod of lift cylinder passes be connected with the bottom of last heating platform behind the lower heating platform.
The utility model discloses a preheating device falls into two parts, and wherein go up heating platform and reciprocate along the guide post under the drive of lift cylinder, can adjust heating platform and the interval between the lower heating platform like this, can guarantee that the temperature of heating platform can not be too high, is convenient for realize two sections heats yet to can improve and preheat the effect.
On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:
further, the lift cylinder is two, and the lift cylinder sets up along X axle direction interval, and the beneficial effect who adopts this step is that can make heating platform both sides atress on through the lift cylinder, guarantees the stability that heating platform removed on.
Further, the baffle is installed around the bottom support, the bottom surface of baffle, last heating platform and the upper surface of lower heating platform form the zone of heating around the combination, and the beneficial effect who adopts this step is used for heating around forming an area through the baffle.
Furthermore, the inner wall of the baffle is in contact with the side face of the upper heating platform, and the beneficial effect of the step is that a relatively closed space is conveniently formed for heating.
Furthermore, every two openings have been seted up at the equal interval of baffle, and the beneficial effect of adopting this step is that can be convenient for carry on spacingly to heating frame through the opening to when can realizing the motion of last heating platform, heating frame can not rock by a wide margin.
Further, go up heating platform top installation temperature controller, the heating rod is connected with the temperature controller electricity, the temperature controller electricity is connected with the timer, adopts the beneficial effect of this step to be can carry out the control of time and temperature through temperature controller and timer.
A production method of a matrix type rectifying electronic product comprises the following steps:
s1: preheating the electronic product to be processed twice by the matrix type rectifying electronic product preheating device;
s2: and after preheating is finished, plastic packaging and baking are carried out to obtain a finished product.
Wherein, the two preheating steps of step S1 are as follows:
s101: placing an electronic product to be processed on a heating frame, and then placing the heating frame on an upper heating platform;
s102: switching on a timer to set the working time to be T1, setting the conduction temperature of a temperature controller to be T1 and the disconnection temperature to be T2, and preheating an electronic product to be processed for the first time;
s103: after the first preheating is completed, the lifting cylinder is started, the height of the upper heating platform is reduced, then the working time of the timer is changed to T2, the conduction temperature of the temperature controller is set to be T3, the disconnection temperature is set to be T4, the electronic product to be processed is preheated for the second time, and the twice preheating of the electronic product to be processed is completed.
Wherein T1 in the step S102 is 20-80S, T1 is 50 degrees, and T2 is 100 degrees; t2 in the step S103 is 5-20S, T3 is 120 degrees, and T4 is 200 degrees.
The plastic package process parameters of step S2 are as follows: the temperature is 150-200 ℃, the time is 60-200 seconds, and the mold clamping pressure is 30-150Kg/cm2Injection pressure of 20-100Kg/cm2；
The baking process parameters of the step S2 are as follows: temperature: 120-220 ℃ for 2-24 hours.
The existing heating frame generates oxidation in different degrees due to inconsistent preheating time, and generally leads to serious oxidation of the frame, so that the bonding force with a plastic packaging material is poor, namely hidden troubles such as poor air tightness, reliability and the like are caused. If not preheated, the frame sheet is pressed due to thermal expansion factors, namely, a mold is pressed to the surface of the lead during plastic package. Meanwhile, the crystal grains are subjected to high temperature instantly, so that the crystal grains and the frame thermally swell to bring thermal stress impact. The sectional preheating method (low temperature and high temperature) is adopted, and the high-temperature preheating time can be effectively controlled, so that the oxidation degree of the frame piece and the crystal grains are controlled to slowly rise to high temperature, and the damage of stress to the frame piece is reduced.
The utility model has the advantages that:
the utility model discloses a sectional type preheating method (low temperature earlier afterwards high temperature) to can effectively manage high temperature preheating time, thereby come the oxidation degree of control frame piece, improve the quality of production product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a preheating device for a matrix rectifier electronic product according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a preheating device for a matrix rectifier electronic product according to embodiment 1 of the present invention;
reference numerals:
1-a bottom support; 2-lower heating platform; 3-upper heating platform; 4-heating rod; 5-a guide post; 6, a lifting cylinder; 7-a baffle plate; 8-a gap; 9-temperature controller; 10-timer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
As shown in fig. 1-2, the utility model provides a matrix rectification electronic product preheating device, including bottom support 1, lower heating platform 2 and upper heating platform 3, lower heating platform 2 is installed on bottom support 1 through the bolt, and is provided with heating rod 4 on lower heating platform 2, the four corners of lower heating platform 2 is all fixed with guide post 5, upper heating platform 3 is installed on guide post 5 in a sliding manner, a lift cylinder 6 is vertically installed below bottom support 1, the piston rod of lift cylinder 6 passes through lower heating platform 2 and then is connected with the bottom of upper heating platform 3, namely lift cylinder 6 bottom and bottom support 1 are connected through the bolt, the piston rod of top is connected with upper heating platform 3 bottom surface; the embodiment discloses a preheating device, divide into two parts, wherein go up heating platform 3 and reciprocate along guide post 5 under the drive of lift cylinder 6, can adjust the interval between heating platform 3 and the lower heating platform 2 like this, this embodiment mainly realizes preheating through last heating platform 3, and lower heating platform 2 is as the heat source, can guarantee like this that the temperature of going up heating platform 3 can not be too high to can improve the effect of preheating.
As shown in fig. 1, there are two lifting cylinders 6, and the lifting cylinders 6 are disposed at intervals along the X-axis direction, so that the lifting cylinders 6 push both sides of the upper heating platform 3, and the upper heating platform 3 can be stable when moving.
As shown in fig. 1, in order to ensure the concentration of heat as much as possible, in this embodiment, baffles 7 are installed around the bottom bracket 1, the baffles 7, the bottom surface of the upper heating platform 3 and the upper surface of the lower heating platform 2 form a heating zone around the combination, the baffles 7 in this embodiment form a square area around the combination, for the upper heating platform 3 to move up and down in the square area, the heat generated by the lower heating platform 2 as a heat source can be located in the heating zone, and then the heat is transferred to the upper heating platform 3, so as to realize preheating.
As shown in fig. 1, the inner wall of the baffle 7 contacts with the side of the upper heating stage 3, so that waste of heat can be avoided as much as possible.
In order to facilitate wiring and placing of the heating frame, two openings 8 are formed in each baffle 7 at intervals, the openings 8 correspond to the handles of the heating frame, and therefore the preheating effect is guaranteed without shaking during preheating.
As shown in fig. 1, a temperature controller 9 is installed above the upper heating platform 3, the heating rod 4 is electrically connected with the temperature controller 9, and the temperature controller 9 is electrically connected with a timer 10; the timer 10 in this embodiment can realize timing operation, i.e. the heating rod 4 can be controlled to work within a period of time, and the temperature controller 9 can ensure the heating temperature range.
Example 2:
the embodiment 2 discloses a matrix type rectifying electronic product processing technology, which comprises the following steps:
s1: preheating an electronic product to be processed twice by using the matrix type rectifying electronic product preheating device in the embodiment 1;
s2: and after preheating is finished, plastic packaging and baking are carried out to obtain a finished product.
Wherein, the two preheating steps of step S1 are as follows:
s101: placing an electronic product to be processed on a heating frame, and then placing the heating frame on an upper heating platform;
s102: switching on a timer to set the working time to be T1, setting the conduction temperature of a temperature controller to be T1 and the disconnection temperature to be T2, and preheating an electronic product to be processed for the first time;
s103: after the first preheating is completed, the lifting cylinder is started, the height of the upper heating platform is reduced, then the working time of the timer is changed to T2, the conduction temperature of the temperature controller is set to be T3, the disconnection temperature is set to be T4, the electronic product to be processed is preheated for the second time, and the twice preheating of the electronic product to be processed is completed.
Wherein T1 in the step S102 is 20-80S, T1 is 50 degrees, and T2 is 100 degrees; t2 in the step S103 is 5-20S, T3 is 120 degrees, and T4 is 200 degrees.
The plastic package process parameters of step S2 are as follows: the temperature is 150-200 ℃, the time is 60-200 seconds, and the mold clamping pressure is 30-150Kg/cm2Injection pressure of 20-100Kg/cm2；
The baking process parameters of the step S2 are as follows: temperature: 120-220 ℃ for 2-24 hours.
In the embodiment, two preheating processes are mainly performed, and the original heating frame is oxidized in different degrees due to inconsistent preheating time, so that the heating frame is generally oxidized seriously, and the bonding force with the plastic packaging material is poor, namely hidden troubles such as poor air tightness and reliability occur. If not preheated, the frame sheet is pressed due to thermal expansion factors, namely, a mold is pressed to the surface of the lead during plastic package. Meanwhile, the crystal grains are subjected to high temperature instantly, so that the crystal grains and the frame thermally swell to bring thermal stress impact; in this embodiment 2, a sectional preheating method (low temperature first and high temperature second) is adopted, and the high-temperature preheating time can be effectively controlled, so as to control the oxidation degree of the frame piece and relatively slowly raise the crystal grain to a high temperature, reduce the damage of the stress to the crystal grain, and finally improve the appearance and the electrical quality of the product, especially improve the air tightness and the reliability of the product.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. The utility model provides a matrix rectification electronic product's preheating device, its characterized in that includes bottom support, lower heating platform and goes up heating platform, lower heating platform passes through the bolt and installs on the support of bottom, and is provided with the heating rod down on the heating platform, the equal fixed mounting in four corners of lower heating platform has the guide post, go up heating platform slidable mounting on the guide post, the vertical lift cylinder that installs in bottom support below, the piston rod of lift cylinder passes be connected with the bottom of last heating platform behind the lower heating platform.
2. The preheating device for matrix rectifier electronic products of claim 1, wherein there are two lifting cylinders, and the lifting cylinders are disposed at intervals along the X-axis direction.
3. The pre-heating device for matrix rectifier electronic product as claimed in claim 2, wherein said bottom bracket is mounted with a baffle plate around the periphery thereof, and said baffle plate, the bottom surface of the upper heating platform and the upper surface of the lower heating platform form a heating zone around the combination.
4. The pre-heating device for matrix rectifier electronic product of claim 3, wherein the inner wall of said baffle plate contacts with the side of the upper heating platform.
5. The pre-heating device of matrix rectifier electronic product of claim 4, wherein each of said baffles has two gaps at intervals.
6. The pre-heating device of matrix rectifier electronic product of claim 5, wherein a temperature controller is installed above said upper heating platform, said heating rod is electrically connected to said temperature controller, and said temperature controller is electrically connected to a timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921560418.2U CN210429753U (en) | 2019-09-18 | 2019-09-18 | Preheating device of matrix rectification electronic product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921560418.2U CN210429753U (en) | 2019-09-18 | 2019-09-18 | Preheating device of matrix rectification electronic product |
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| CN210429753U true CN210429753U (en) | 2020-04-28 |
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| CN201921560418.2U Active CN210429753U (en) | 2019-09-18 | 2019-09-18 | Preheating device of matrix rectification electronic product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517979A (en) * | 2019-09-18 | 2019-11-29 | 扬州虹扬科技发展有限公司 | A kind of preheating apparatus and production method of matrix form switching electronic product |
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2019
- 2019-09-18 CN CN201921560418.2U patent/CN210429753U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517979A (en) * | 2019-09-18 | 2019-11-29 | 扬州虹扬科技发展有限公司 | A kind of preheating apparatus and production method of matrix form switching electronic product |
| CN110517979B (en) * | 2019-09-18 | 2024-03-19 | 扬州虹扬科技发展有限公司 | Preheating device and production method of matrix rectifying electronic product |
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