Solder paste warming machine

Abstract

This utility model relates to the field of solder paste warming technology, specifically to a solder paste warming machine, comprising: a main body of the warming machine, having a warming chamber; an annular drive component disposed within the warming chamber; and several fixing components for fixing containers loaded with solder paste. Driven by the annular drive component, each fixing component can move cyclically along a predetermined annular path. The main body of the warming machine has a feeding port and a dispensing port corresponding to the annular drive component, and the vertical projections of the feeding port and the dispensing port are both located on the annular drive component. This application achieves first-in-first-out control of each container loaded with solder paste, thereby ensuring the timeliness and consistency of solder paste warming, avoiding excessively long or short warming times for some solder paste due to disordered sorting, and reducing quality risks caused by improper warming from the source.

Description

Technical Field

[0001] This utility model relates to the field of solder paste warming technology, specifically to a solder paste warming machine. Background Technology

[0002] In the surface mount diode chip soldering process of the electronics manufacturing industry, solder paste is a core soldering material, and its performance stability directly determines the soldering quality and the reliability of subsequent products. Solder paste is usually made of solder powder and flux. The organic components in the flux are easily affected by temperature, resulting in volatilization, oxidation, or agglomeration. Therefore, the industry generally uses a low temperature environment of 2~10℃ to store solder paste to delay its performance degradation.

[0003] However, solder paste stored at low temperatures must undergo a warming process (also known as a restoring process) before use. This is because if low-temperature solder paste is used directly, the temperature difference between it and the ambient temperature will cause moisture in the air to condense on the surface of the solder paste. During soldering, the moisture evaporates when heated, which can easily lead to defects such as cold solder joints and bubbles. Based on the material properties of solder paste and extensive process verification, the industry typically specifies a warming time of 6 hours to ensure that the solder paste is within its optimal performance window when used. Currently, there are significant deficiencies in the industry's control over solder paste reheating: in most production scenarios, solder paste is directly stored on open material carts for reheating, without adhering to the first-in, first-out (FIFO) flow principle. This operation directly leads to the inability to effectively control the solder paste reheating time, with the actual reheating time often deviating from the standard 6-hour period. For example, when solder paste is placed in a container and placed in an open material cart, some containers that are placed in first may not be removed first, resulting in excessively long reheating times for the solder paste, exceeding the optimal reheating time and causing a decrease in activity; while some containers that are placed later may be removed prematurely, resulting in insufficient reheating of the solder paste, failing to reach the time required for performance stability.

[0004] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a solder paste warming machine.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Solder paste warming machine, including: The main body of the reheating unit is equipped with a reheating chamber; A reheating component (not shown in the figure) is disposed in the reheating chamber and is used to reheat the solder paste placed in the reheating chamber. An annular drive component is disposed within the rewarming chamber; A plurality of fixing members are provided for fixing a device loaded with solder paste; under the drive of the annular drive member, each of the fixing members can move cyclically along a predetermined annular path. The main body of the reheating machine is provided with a feeding port and a discharging port corresponding to the annular drive component. The projections of the feeding port and the discharging port along the vertical direction are both located on the annular drive component.

[0007] The reheating process is as follows: Each appliance enters the reheating chamber through the feeding port in sequence and is fixed by each fixing component in sequence. During the fixing process, the annular drive component drives each fixing component to move along a predetermined annular path, so that each fixing component can fix each appliance one by one. After the reheating component assists in reheating for a predetermined time, each appliance is removed from the reheating chamber through the feeding port in sequence. During this period, the annular drive component also drives each fixing component to move along a predetermined annular path (not limited to bidirectional cyclic movement).

[0008] The above settings enable first-in, first-out (FIFO) control of all containers containing solder paste, ensuring the timeliness and consistency of solder paste reheating. Solder paste that enters the reheating process first is processed and released from the warehouse first, avoiding situations where disordered sorting leads to excessively long or short reheating times for some solder paste. This ensures that each batch of solder paste reaches the usage standard within the optimal reheating time, reducing quality risks caused by improper reheating from the source.

[0009] The following supplementary information is provided regarding the structure in this application: The reheating component is not an innovation of this application. Existing devices for reheating solder paste can be used. For example, a precision temperature sensor and a microcomputer temperature controller can be set to maintain a stable room temperature of 23±2℃. A low-speed circulating fan can be used to ensure uniform temperature in the reheating chamber, allowing the solder paste to reheat naturally and slowly. The reheating temperature can be room temperature (e.g., 25℃). In this case, the reheating component can be eliminated, meaning that the reheating component is not an essential structure and can be set selectively. For ring-shaped drive components, existing ring-shaped drive devices, such as ring conveyors, can be used, or ring synchronous belt modules, ring guide rail sliders, and ring magnetic drive conveyor belts can be used to achieve cyclic drive through closed-loop motion. For instruments, syringes can be used; For fasteners, a mounting base with a mounting groove can be selected; The above description is for illustrative purposes only and is not intended to be restrictive. You may adjust and select according to your needs.

[0010] In a further technical solution, the ring drive members are provided in multiple groups, and each group of ring drive members includes at least two ring drive members that are spaced apart along a first direction, the first direction being perpendicular to the vertical direction. Each group of ring-shaped drive components is distributed at intervals along the vertical direction; The number of feeding ports and the number of discharging ports are the same as the number of annular drive components; Each of the aforementioned annular drive components is equipped with a plurality of the aforementioned fixing components.

[0011] Multiple annular drive units are configured and grouped together. This allows for the isolated reheating of different types of solder paste, preventing errors caused by mixing different types of solder paste. Furthermore, these annular drive units are distributed along the first direction and the vertical direction, making full use of the vertical and horizontal space of the solder paste reheating machine. In addition, any two annular drive units are spaced apart to avoid mutual interference, especially to prevent interference and obstruction of movement between solder paste-loaded devices driven by different annular drive units.

[0012] A further technical solution involves increasing the size of each group of annular drive components from top to bottom in the second direction, which is perpendicular to the first and vertical directions. This configuration facilitates material feeding through each feeding port and material retrieval through each discharging port.

[0013] To illustrate this point, consider the following example: If two vertically adjacent ring-shaped drive components have the same dimensions, then one of the feeding ports (hereinafter referred to as the discharge port) is located between these two ring-shaped drive components, making it difficult to achieve a balance between convenient feeding and controlling the distance between the two ring-shaped drive components. When the dimensions are inconsistent, the vertical projection of the discharge port is not on the upper ring-shaped drive component, which neither affects feeding through the discharge port nor affects the adjustment of the distance between the two vertically adjacent ring-shaped drive components to control the vertical dimensions of the solder paste reheating machine.

[0014] Further explanation is provided below to aid understanding, such as Figure 2 The surface of the solder paste reheating machine has a stepped surface, and each feeding port is at a different height.

[0015] This application also increases the capacity of the reheat chamber for appliances containing solder paste.

[0016] A further technical solution is that the projections of each of the feeding ports in the vertical direction are arranged side by side at intervals along the second direction; The projections of each of the material inlet in the vertical direction are arranged side by side at intervals along the second direction.

[0017] Taking the feeding port as an example: the projections of each feeding port in the vertical direction are arranged side by side along the second direction at intervals. Compared with the staggered arrangement, it has the advantages of facilitating feeding and processing, and can also improve the aesthetics of the solder paste reheating machine.

[0018] In a further technical solution, at least a portion of the main body of the reheating machine is a transparent area. These portions can be made of transparent materials such as acrylic sheets, which facilitates observation of the reheating status of the solder paste in the reheating chamber and also helps to determine the capacity of the reheating chamber.

[0019] In a further technical solution, both the feeding port and the dispensing port are provided with rotatable doors. The doors are used to block the openings of the corresponding feeding ports or dispensing ports to prevent external cold air and moisture from seeping in, thereby avoiding affecting the temperature recovery efficiency and preventing the solder paste from being contaminated.

[0020] In a further technical solution, the main body of the reheating machine is provided with an inspection port, which is connected to the reheating chamber; a cover plate is closed at the opening of the inspection port.

[0021] The inspection port is designed to facilitate the maintenance of the ring drive component. During non-maintenance periods, the inspection port is covered by a cover plate to seal the reheat chamber, preventing external cold air and moisture from seeping in, thus avoiding affecting the reheat efficiency and preventing the solder paste from being contaminated.

[0022] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0023] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0024] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0025] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0026] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0027] The working principle and advantages of this utility model are as follows: During the reheating process, each loading device enters the reheating chamber through the feeding port in sequence and is fixed by each fixing component in sequence. During the fixing process, the annular drive component drives each fixing component to move along a predetermined annular path, so that each fixing component can fix each device one by one. After reheating, each device is removed from the reheating chamber through the feeding port in sequence. During this period, the annular drive component also drives each fixing component to move along a predetermined annular path.

[0028] The above settings enable first-in, first-out (FIFO) control of all containers containing solder paste, ensuring the timeliness and consistency of solder paste reheating. Solder paste that enters the reheating process first is processed and released from the warehouse first, avoiding situations where disordered sorting leads to excessively long or short reheating times for some solder paste. This ensures that each batch of solder paste reaches the usage standard within the optimal reheating time, reducing quality risks caused by improper reheating from the source. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the solder paste warming machine according to an embodiment of this utility model; Figure 2 This is a partial structural schematic diagram of the solder paste warming machine according to an embodiment of the present invention; Figure 3 This is a schematic diagram showing the positions of the fixing component and the loading device in an embodiment of this utility model.

[0030] In the attached diagrams: 1. Main body of the reheating machine; 11. Reheating chamber; 12. Feeding port; 13. Discharge port; 2. Annular drive component; 3. Fixing component; 4. Chamber door; 5. Loading device. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0032] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0033] See Figures 1-3 Solder paste warming machine, including: The main body 1 of the reheating machine is provided with a reheating chamber 11; A reheating component (not shown in the figure) is disposed in the reheating chamber 11 and is used to reheat the solder paste placed in the reheating chamber 11. An annular drive component 2 is disposed within the rewarming chamber 11; The fixing element 3 is configured as a plurality of fixing elements and is used to fix the device loaded with solder paste; under the drive of the annular drive element 2, each of the fixing elements 3 can move cyclically along a predetermined annular path; The main body 1 of the reheating machine is provided with a feeding port 12 and a discharging port 13 corresponding to the annular drive component 2. The projections of the feeding port 12 and the discharging port 13 along the vertical direction are both on the annular drive component 2.

[0034] The container holding solder paste is referred to as the loading container 5.

[0035] The reheating process is as follows: Each loading device 5 enters the reheating chamber 11 through the feeding port 12 in sequence and is fixed by each fixing component 3 in sequence. During the fixing process, the annular drive component 2 drives each fixing component 3 to move along a predetermined annular path, so that each fixing component 3 can fix each loading device 5 one by one. After the reheating component assists in reheating for a predetermined time, each loading device 5 is removed from the reheating chamber through the feeding port 13 in sequence. During this period, the annular drive component 2 also drives each fixing component 3 to move along a predetermined annular path (not limited to bidirectional cyclic movement).

[0036] The above settings enable first-in, first-out (FIFO) control of each loading device 5, ensuring the timeliness and consistency of solder paste reheating. Solder paste that enters the reheating process first is processed and released from the warehouse first, avoiding excessively long or short reheating times for some solder paste due to disordered sorting. This ensures that each batch of solder paste reaches the usage standard within the optimal reheating time, reducing quality risks caused by improper reheating from the source.

[0037] The following is a supplementary explanation of the structure in this embodiment: For the reheating component, this is not an innovation of this application. Existing devices for reheating solder paste can be used. For example, a precision temperature sensor and a microcomputer temperature controller are set to maintain a stable room temperature of 23±2℃, and a low-speed circulating fan is used to ensure that the temperature in the reheating chamber 11 is uniform, so that the solder paste can reheat naturally and slowly. For the ring drive component 2, existing ring drive devices, such as ring conveyors, can be used, or ring synchronous belt modules, ring guide rail sliders, and ring magnetic drive conveyor belts can be used to achieve cyclic drive through closed-loop motion. For loading device 5, a syringe can be used; For fastener 3, a fixing seat with a fixing groove can be selected; The above description is for illustrative purposes only and is not intended to be restrictive. You may adjust and select according to your needs.

[0038] See Figure 2 In this embodiment, the ring drive member 2 is provided in multiple groups, and each group of ring drive members 2 includes at least two ring drive members 2 that are spaced apart along a first direction, the first direction being perpendicular to the vertical direction. Each group of annular drive components 2 is distributed at intervals along the vertical direction; The number of feeding ports 12 and the number of discharging ports 13 are the same as the number of annular drive components 2; Each of the aforementioned annular drive components 2 is equipped with a plurality of the aforementioned fixing components 3.

[0039] The first direction is parallel to the X direction in the diagram.

[0040] Multiple annular drive units 2 are configured and grouped together. This allows for the isolated reheating of different types of solder paste, preventing errors caused by mixing different types of solder paste. Furthermore, these annular drive units 2 are distributed along the first direction and the vertical direction, fully utilizing the vertical and horizontal space of the solder paste reheating machine. In addition, any two annular drive units 2 are spaced apart (potentially evenly) to avoid mutual interference, especially to prevent interference and obstruction of movement between appliances loaded with solder paste driven by different annular drive units 2.

[0041] Preferably, the number of ring drive components 2 in each group of ring drive components 2 is the same.

[0042] The reheating chamber 11 can be divided into several small chambers corresponding to each annular drive component 2, without limitation.

[0043] In this embodiment, from top to bottom, the dimensions of each group of annular drive members 2 gradually increase in the second direction, which is perpendicular to the first direction and the vertical direction. This arrangement facilitates material feeding through each feeding port 12 and material retrieval through each discharging port 13.

[0044] The second direction is parallel to the Y direction in the diagram.

[0045] To facilitate understanding, an example is given below: If two vertically adjacent annular drive components 2 have the same size, then one of the feeding ports 12 (hereinafter referred to as the discharge port) is located between these two annular drive components 2, making it difficult to achieve a balance between facilitating feeding and controlling the distance between these two annular drive components 2; when the sizes are inconsistent, the vertical projection of the discharge port is not on the upper annular drive component 2, which neither affects feeding through the discharge port nor affects adjusting the distance between the two vertically adjacent annular drive components 2 to control the vertical dimensions of the solder paste reheating machine.

[0046] Further explanation is provided below to aid understanding, such as Figure 2 The surface of the solder paste reheating machine has a stepped surface, and each feeding port 12 is at a different height.

[0047] This embodiment also increases the capacity of the reheat chamber 11 for containers containing solder paste.

[0048] See Figure 2 In this embodiment, the projections of each of the feeding ports 12 in the vertical direction are arranged side by side at intervals along the second direction; The projections of each of the material inlet 13 in the vertical direction are arranged side by side at intervals along the second direction.

[0049] Taking the feeding port 12 as an example: the projections of each feeding port 12 in the vertical direction are arranged side by side along the second direction at intervals. Compared with their staggered arrangement, this arrangement has the advantages of facilitating feeding and processing, and can also improve the aesthetics of the solder paste reheating machine.

[0050] In this embodiment, at least a portion of the main body 1 of the reheating machine is a transparent area. These portions can be made of transparent materials such as acrylic sheets, which facilitates observation of the reheating status of the solder paste in the reheating chamber 11 and also helps to determine the capacity of the reheating chamber 11. The top plate of the main body 1 of the reheating machine can be made of acrylic sheet.

[0051] See Figure 2 In this embodiment, both the feeding port 12 and the dispensing port 13 are rotatably equipped with a door 4. The door 4 is used to seal the opening of the corresponding feeding port 12 or the opening of the corresponding dispensing port 13 to prevent external cold air and moisture from seeping in, thus avoiding affecting the temperature recovery efficiency and preventing the solder paste from being contaminated. The door 4 can also be laterally installed, as long as it can achieve the sealing effect.

[0052] In this embodiment, the main body 1 of the reheating machine is provided with an inspection port (not shown in the figure), which is connected to the reheating chamber 11; the opening of the inspection port is covered with a cover plate (not shown in the figure).

[0053] The inspection port is mainly designed to facilitate the maintenance of the ring drive component 2. During non-maintenance periods, the inspection port is covered by a cover plate to seal the reheating chamber 11, preventing external cold air and moisture from seeping in, thus avoiding affecting the reheating efficiency and preventing the solder paste from being contaminated.

[0054] Several sensors can be installed on the main body 1 of the reheating machine. For example, a first sensor can be installed. When an operator places the loading device 5, the first sensor detects a human hand and, through the controller, prevents the ring drive component 2 from being driven unexpectedly, thus avoiding injury to the human hand. The type of the first sensor is not limited, as long as it meets the above purpose.

[0055] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tin paste reflow machine characterized by: include: The main body of the reheating machine (1) is provided with a reheating chamber (11); An annular drive element (2) is disposed within the reheat chamber (11); The fixing member (3) is provided in a plurality of units and is used to fix the appliance loaded with solder paste; under the drive of the annular drive member (2), each of the fixing members (3) can move cyclically along a predetermined annular path; The main body (1) of the reheating machine is provided with a feeding port (12) and a taking port (13) corresponding to the annular drive component (2). The projections of the feeding port (12) and the taking port (13) along the vertical direction are both on the annular drive component (2).

2. The solder paste warming machine according to claim 1, characterized in that: The ring drive (2) is provided in multiple groups, and each group of ring drive (2) includes at least two ring drive (2) distributed at intervals along a first direction, the first direction being perpendicular to the vertical direction; Each group of annular drive components (2) is distributed at intervals along the vertical direction; The number of feeding ports (12) and the number of taking ports (13) are the same as the number of annular drive components (2); Each of the aforementioned annular drive components (2) is equipped with a plurality of the aforementioned fasteners (3).

3. The solder paste warming machine according to claim 2, characterized in that: From top to bottom, the dimensions of each group of annular drive components (2) gradually increase in the second direction, which is perpendicular to the first direction and the vertical direction.

4. The solder paste warming machine according to claim 3, characterized in that: The projections of each of the feeding ports (12) in the vertical direction are arranged side by side at intervals along the second direction; The projections of each of the material inlet (13) in the vertical direction are arranged side by side at intervals along the second direction.

5. The solder paste warming machine according to any one of claims 1-4, characterized in that: At least a portion of the main body (1) of the reheating machine is a transparent area.

6. The tin-paste warming machine according to any one of claims 1 to 4, characterized by: Both the feeding port (12) and the taking port (13) are provided with rotatable gates (4), which are used to block the opening of the corresponding feeding port (12) or the opening of the corresponding taking port (13).

7. The tin-paste warming machine according to any one of claims 1 to 4, characterized by: The main body (1) of the reheating machine is provided with an inspection port, which is connected to the reheating chamber (11); the opening of the inspection port is covered with a cover plate.

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