Solder paste unfreezing machine

Abstract

The utility model relates to the technical field of welding auxiliary devices, and discloses a solder paste unfreezing machine which comprises an unfreezing box, a solder paste unfreezing device and a solder paste unfreezing device. The lifting device is arranged in the thawing box; the tray is driven by the lifting device; the number of the top clamping structures is two, the two top clamping structures are arranged on the two sides of the tray in a plane symmetry mode, each top clamping structure comprises a through hole formed in the bottom of the tray, a rotating shaft arranged below the tray and a clamping arm rotating around the rotating shaft, each clamping arm comprises a top rod, a connecting rod and a transverse clamping block which are sequentially connected, and the connecting rods are rotationally connected with the rotating shafts; and the clamping arms swing between a clamping state and a loosening state. When the solder paste thawing machine drives the thawing cup to ascend, the thawing cup can be kept stable and not prone to shaking, can be directly taken away, is convenient to take and place, and is simple and efficient in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary devices, in particular to a solder paste thawing machine. Background Art

[0002] Solder paste is needed in the process of PCB assembly. Solder paste is usually stored in a low temperature environment during transportation. Before it is put into use, the solder paste needs to be thawed and warmed up. The working process of the current solder paste thawing device is usually as follows: put the solder paste into the thawing cup, place the thawing cup on the tray, lower the tray, let the thawing cup enter the thawing box, close the box cover, start the heating device, and raise the thawing cup through the tray after thawing.

[0003] There is usually no fixed structure between the thawing cup and the tray, and the thawing cup is only placed directly on the tray. When the tray is raised after thawing, the thawing cup is easily placed unstable and shakes. It can be seen that the current solder paste thawing device still has room for improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the background technology.

[0005] The utility model provides a solder paste thawing machine, comprising:

[0006] A thawing box, wherein an unlocking block is provided on the inner wall of the thawing box;

[0007] A lifting device, wherein the lifting device is arranged in the thawing box;

[0008] a tray, wherein the tray is driven by the lifting device;

[0009] A top clamping structure, wherein there are two top clamping structures, and the two top clamping structures are arranged symmetrically on both sides of the pallet in a plane, and the top clamping structure includes a through hole arranged at the bottom of the pallet, a rotating shaft arranged below the pallet, and a clamping arm rotating around the rotating shaft, and the clamping arm includes a top rod, a connecting rod and a cross clamping block connected in sequence, and the connecting rod is rotatably connected to the rotating shaft, and the clamping arm swings between a clamping state and a loosened state, in the loosened state the top rod passes through the through hole from the bottom to the top, and in the clamping state the top rod is pushed down and the cross clamping block swings toward the middle of the pallet.

[0010] The beneficial effects of the utility model are as follows: before the thawing cup is placed on the tray, the clamping arm of the solder paste thawing machine is in a loosened state; when the thawing cup is placed, the clamping arm in the loosened state is pushed down, and the clamping arm swings inwards so that two symmetrical horizontal clamping blocks clamp the thawing cup; after the thawing is completed, the lifting device drives the thawing cup to rise so that the thawing cup can remain stable and not easily shaken; when it rises to the height where the unlocking block is located, the unlocking block pushes the clamping arm so that the clamping arm swings outwards to loosen the thawing cup, and the thawing cup can be directly taken away after it rises into place. The solder paste thawing machine keeps the thawing cup stable during the rising process and also has the advantage of being easy to take and place. In addition, no power device is required to realize the clamping and placing function of the thawing cup, and the structure is simple, efficient and low in cost.

[0011] As some sub-solutions of the above technical solution, the top surface of the push rod is a curved surface.

[0012] As some sub-solutions of the above technical solution, the connecting rod is in an "L" shape, and a counterweight block extending away from the top rod and the rotating shaft is provided on the upper part of the connecting rod.

[0013] As some sub-schemes of the above technical scheme, the solder paste thawing machine also includes a pressure sensor, which is arranged between the unlocking block and the counterweight block, the pressure sensor is fixedly connected to the counterweight block or the unlocking block, and the pressure sensor is communicatively connected to the lifting device.

[0014] As some sub-solutions of the above technical solution, the pressure sensor is a piezoelectric pressure sensor.

[0015] As some sub-solutions of the above technical solution, the top clamping structure also includes a bracket, and the rotating shaft is detachably connected to the tray through the bracket.

[0016] As some sub-solutions of the above technical solution, the lifting device is a cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of the solder paste thawing machine in a clamping state;

[0019] Figure 2 This is a structural diagram of the solder paste thawing machine in the released state.

[0020] In the attached figure:

[0021] 1-thaw box; 11-unlock block;

[0022] 2-Lifting device;

[0023] 3-tray; 31-through hole;

[0024] 41-rotating shaft; 42-clamping arm; 421-top rod; 422-connecting rod; 423-cross clamping block; 424-counterweight block;

[0025] 5- Pressure sensor;

[0026] 9-Thaw cups. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, the meaning of "several" is an indefinite quantity, the meaning of "multiple" is more than two, "greater than", "less than", "exceed" and the like are understood as not including the number itself, and "above", "below", "within" and the like are understood as including the number itself. If there is a description of the first and the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. The "and / or" that appears in the full text indicates three parallel solutions. For example, A and / or B indicates the solution satisfied by A, the solution satisfied by B, or the solution satisfied by both A and B.

[0030] In the description of the utility model, if there is a short sentence containing multiple parallel features, the attributive defines the closest feature, for example: B, C, and E connected to D are arranged on A, which means that B is arranged on A and E is connected to D, and does not constitute a limitation on C; but attributives that indicate the relationship between features, such as "set at intervals" and "arranged in a ring", do not belong to this category. If the word "all" is preceded by an attributive, it means that all the features in the short sentence are limited, such as B, C, and D are all arranged on A, which means that B, C, and D are all arranged on A. For a sentence with an omitted subject, the omitted subject is the subject of the previous sentence, that is, B is arranged on A, including C, which means that B is arranged on A and A includes C.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Combine the following Figure 1 to Figure 2 The embodiments of the utility model are described.

[0033] The present embodiment relates to a solder paste thawing machine, which can conveniently take out and put in a thawing cup 9, and the thawing cup 9 is not easy to shake.

[0034] Solder paste thawing machine, including:

[0035] A thawing box 1, wherein an unlocking block 11 is provided on the inner wall of the thawing box 1;

[0036] A lifting device 2, wherein the lifting device 2 is arranged in the thawing box 1;

[0037] A tray 3, wherein the tray 3 is driven by the lifting device 2;

[0038] A top clamping structure, wherein there are two top clamping structures, and the two top clamping structures are plane-symmetrically arranged on both sides of the tray 3. The top clamping structure includes a through hole 31 arranged at the bottom of the tray 3, a rotating shaft 41 arranged below the tray 3, and a clamping arm 42 rotating around the rotating shaft 41. The clamping arm 42 includes a top rod 421, a connecting rod 422 and a cross clamping block 423 connected in sequence. The connecting rod 422 is rotatably connected to the rotating shaft 41. The clamping arm 42 swings between a clamping state and a loosened state. In the loosened state, the top rod 421 passes through the through hole 31 from the bottom to the top, and in the clamping state, the top rod 421 is pushed down and the cross clamping block 423 swings toward the middle of the tray 3.

[0039] Before the thawing cup 9 is placed on the tray 3, the clamping arm 42 of the solder paste thawing machine is in a loosened state. When the thawing cup 9 is placed, the clamping arm 42 in the loosened state is pushed down, and the clamping arm 42 swings inward so that the two symmetrical horizontal clamping blocks 423 clamp the thawing cup 9. After the thawing is completed, the lifting device 2 drives the thawing cup 9 to rise, which can keep the thawing cup 9 stable and not prone to shaking. When it rises to the height where the unlocking block 11 is located, the unlocking block 11 pushes the clamping arm 42 so that the clamping arm 42 swings outward to release the thawing cup 9. The thawing cup 9 can be directly taken away after it rises to the right position. The solder paste thawing machine keeps the thawing cup 9 stable during the rising process, and also has the advantage of being easy to take and put. In addition, no power device is required to realize the clamping and placing function of the thawing cup 9, and the structure is simple, efficient and low in cost.

[0040] Specifically, before the thawing cup 9 is placed, the lifting device 2 places the tray 3 at a high position, at which time the clamp arm 42 is in a loosened state. In the loosened state, the clamp arm 42 can be in contact with the clamp arm 42 through the unlocking block 11 to keep the clamp arm 42 in an open state; after the thawing cup 9 is placed on the tray 3, as the thawing cup 9 pushes the top block down, the clamp arm 42 swings inward, and the horizontal clamping blocks 423 on both sides swing inward to clamp the thawing cup 9 from both sides. The thawing cup 9 is clamped by the horizontal clamping blocks 423 on both sides until the lifting device 2 drives the tray 3 to rise to the unlocking block 11, and the clamp arm 42 contacts the clamp arm 42 during the process of the clamp arm 42 rising, so that the clamp arm 42 swings outward relative to the tray 3 to release the two horizontal clamping blocks 423. At this time, the thawing cup 9 is released from the clamping state, and the thawing cup 9 can be taken out directly.

[0041] The top surface of the push rod 421 is an arc surface. The top surface of the push rod 421 is set as an arc surface, and the friction resistance with the bottom surface of the thawing cup 9 is small during the swinging process of the push rod 421, and it is not easy to leave marks on the bottom surface of the thawing cup 9.

[0042] The connecting rod 422 is in an "L" shape, and a counterweight 424 is provided on the upper part of the connecting rod 422, which extends away from the top rod 421 and the rotating shaft 41. The counterweight 424 is arranged on the side away from the top rod 421 and the rotating shaft 41, and the clamp arm 42 has a tendency to swing outward under the gravity of the counterweight 424, so that the top rod 421 is kept in a loosened state without external force, and keeps the state of passing through the through hole 31 upward, so as to open the two horizontal clamping blocks 423, so as to put the thawing cup 9.

[0043] In order to reduce the manual participation in thawing the solder paste, the solder paste thawing machine also includes a pressure sensor 5, which is arranged between the unlocking block 11 and the counterweight block 424, and the pressure sensor 5 is fixedly connected to the counterweight block 424 or the unlocking block 11, and the pressure sensor 5 is communicatively connected to the lifting device 2. Specifically, the solder paste thawing machine also includes a control system, and the pressure sensor 5 and the lifting device 2 are communicatively connected through the control system. After the solder paste thawing machine reaches the set thawing time, the control system sends a command to the lifting device 2, and the tray 3 is raised by the lifting device 2 until the tray 3 rises to the counterweight block 424 and the unlocking block 11 abut against each other through the pressure sensor 5, triggering the pressure sensor 5, and the pressure sensor 5 feedbacks a signal to the control system, and the control system stops the lifting device 2 from rising after continuing to rise for a certain distance. At this time, the thawing cup 9 automatically stops when it rises to a position where it can be taken away, and there is no need to manually control the lifting device 2 to raise the tray 3, reducing manual intervention and lowering the cost.

[0044] The pressure sensor 5 is a piezoelectric pressure sensor 5. The pressure sensor 5 adopts a piezoelectric sensor, which has the advantage of low cost.

[0045] The top clamp structure further includes a bracket, through which the shaft 41 is detachably connected to the tray 3. The shaft 41 is detachably connected to the tray 3 through the bracket, and when the shaft 41 needs to be replaced, the tray 3 does not need to be replaced as a whole, which is low in cost and more convenient to replace.

[0046] The lifting device 2 is a cylinder. The lifting device 2 adopts a cylinder, which has a low cost.

[0047] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. Solder paste thawing machine, characterized by: include: A thawing box (1), wherein an unlocking block (11) is provided on the inner wall of the thawing box (1); A lifting device (2), wherein the lifting device (2) is arranged in the thawing box (1); A tray (3), wherein the tray (3) is driven by the lifting device (2); A top clamping structure, wherein there are two top clamping structures, and the two top clamping structures are arranged symmetrically on both sides of the tray (3). The top clamping structure comprises a through hole (31) arranged at the bottom of the tray (3), a rotating shaft (41) arranged below the tray (3), and a clamping arm (42) rotating around the rotating shaft (41). The clamping arm (42) comprises a top rod (421), a connecting rod (422) and a cross clamping block (423) connected in sequence. The connecting rod (422) is rotationally connected to the rotating shaft (41). The clamping arm (42) swings between a clamping state and a loose state. In the loose state, the top rod (421) passes through the through hole (31) from the bottom to the top. In the clamping state, the top rod (421) is pushed down and the cross clamping block (423) swings toward the middle of the tray (3).

2. The solder paste thawing machine according to claim 1, characterized in that: The top surface of the push rod (421) is a curved surface.

3. The solder paste thawing machine according to claim 1, characterized in that: The connecting rod (422) is in an "L" shape, and a counterweight block (424) is provided on the upper portion of the connecting rod (422) and extends away from the top rod (421) and the rotating shaft (41).

4. The solder paste thawing machine according to claim 3, characterized in that: The solder paste thawing machine also includes a pressure sensor (5), which is arranged between the unlocking block (11) and the counterweight block (424), the pressure sensor (5) is fixedly connected to the counterweight block (424) or the unlocking block (11), and the pressure sensor (5) is communicatively connected to the lifting device (2).

5. The solder paste thawing machine according to claim 4, characterized in that: The pressure sensor (5) is a piezoelectric pressure sensor (5).

6. The solder paste thawing machine according to claim 1, characterized in that: The top clamping structure also includes a bracket, and the rotating shaft (41) is detachably connected to the tray (3) via the bracket.

7. The solder paste thawing machine according to claim 1, characterized in that: The lifting device (2) is a cylinder.

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