Hot-press head leveling mechanism and hot-press welding device applying same

Abstract

The present application relates to the field of hot pressing, in particular to a hot pressing head leveling mechanism and a hot pressing welding device using the same, the hot pressing head leveling mechanism comprising a mounting plate, a floating plate and two elastic piece groups, the floating plate being rotatably mounted on the mounting plate by a rotating shaft, for mounting a hot pressing head assembly, the hot pressing head assembly having a hot pressing head, the rotating shaft being perpendicular to the length direction of the hot pressing head; the two elastic piece groups being distributed on both sides of the rotating shaft, each elastic piece group having at least one elastic piece, the elastic piece being connected between the mounting plate and the floating plate. The present application can automatically adjust the hot pressing head to be parallel to the object to be pressed during hot pressing of the object to be pressed, and then completely adhere to the object to be pressed, so as to ensure the hot pressing effect.

Description

Technical Field

[0001] This invention relates to the field of hot pressing, and more specifically to a hot pressing head leveling mechanism and a hot pressing welding apparatus using the same. Background Technology

[0002] The principle of thermoforming soldering is to first print solder paste onto a circuit board, then use heat to melt the solder and connect the two electronic components that need to be connected. Typically, flexible printed circuit boards (PCBs) are soldered onto the PCB, achieving the goal of being lightweight, thin, short, and small. During soldering, the thermoforming head must be perfectly parallel to the object being pressed to ensure even heating and optimal soldering results. If the surface of the object being pressed is not parallel to the thermoforming head, the current procedure involves loosening the screws securing the thermoforming head to the thermoforming machine, switching to manual mode, lowering the thermoforming head to press against the object, confirming full contact, tightening the screws, and finally raising the thermoforming head. This adjustment process is complex and cumbersome. Furthermore, if the surfaces of the objects in a batch are uneven, the current mechanism cannot guarantee that the thermoforming head will perfectly fit each object, thus compromising the soldering effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a hot press head leveling mechanism that can automatically adjust the hot press head to a parallel state with the object to be pressed during the hot pressing process, so as to fully fit with the object and ensure the hot pressing effect.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a hot press head leveling mechanism, comprising a mounting plate, a floating plate, and two elastic element groups. The floating plate is rotatably mounted on the mounting plate via a rotating shaft for mounting a hot press head assembly. The hot press head assembly has a hot press head, and the rotating shaft is perpendicular to the length direction of the hot press head. The two elastic element groups are distributed on both sides of the rotating shaft, and each elastic element group has at least one elastic element. The elastic element is connected between the mounting plate and the floating plate.

[0005] To further reduce the leveling resistance of the leveling mechanism, enable the hot press head to tilt smoothly, and improve the response speed, the mounting plate includes a fixed plate and a sliding plate. The sliding plate is slidably mounted on the fixed plate, and its sliding direction relative to the fixed plate is parallel to the fixed plate and perpendicular to the axial direction of the rotation axis. The elastic element is connected between the sliding plate and the floating plate.

[0006] Furthermore, in order to enable the sliding plate to automatically return to its original position, the hot press head leveling mechanism also includes an automatic return component, which is disposed between the fixed plate and the sliding plate to enable the sliding plate to automatically return to its original position.

[0007] A simple and reliable automatic self-aligning component is further provided. The automatic self-aligning component includes a power component, a positioning pin, and a self-aligning hole disposed on the sliding plate. The self-aligning hole has a flared section and a positioning section. The inner diameter of the flared section gradually increases from the end near the positioning section to the end away from the positioning section. The power component is mounted on the fixed plate and connected to the positioning pin. When the power component drives the positioning pin to extend, the positioning pin moves from the flared section into the positioning section to return the sliding plate to its original position.

[0008] Furthermore, in order to position the locating pin and prevent it from shifting, a bushing that mates with the locating pin is provided inside the fixing plate. During its extension, the locating pin passes through the bushing and then extends into the return hole.

[0009] Furthermore, to facilitate the installation of the power component and its adaptation with the positioning pin, the power component is connected to the positioning pin via a floating joint.

[0010] A further specific structure of a floating joint that is convenient to be connected to a positioning pin is provided. The floating joint includes a connecting block, which is connected to the power component. The connecting block is provided with a floating groove. The width of the opening of the floating groove is smaller than its internal width. The positioning pin is provided with a mating part. The mating part enters the floating groove along the opening on the side of the floating groove, has floating space in the floating groove, and is not allowed to detach from the opening of the groove.

[0011] To further enable the sliding plate to slide smoothly relative to the fixed plate and improve compactness, the fixed plate has a thick portion and a thin portion. The thick portion protrudes from the thin portion toward the sliding plate. One of the thin portion and the sliding plate is fixed with a slide rail, and the other is fixed with a slide block. The slide block is provided with a slide groove. The sliding plate is slidably mounted on the fixed plate through the cooperation of the slide rail and the slide groove. The bushing is provided on the thick portion.

[0012] To further improve the compactness between the mounting plate and the floating plate, at least one protrusion is provided on the opposite side of the mounting plate and the floating plate, the protrusions on the mounting plate and the floating plate are staggered from each other, and each is provided with a through hole, through which the rotating shaft passes.

[0013] The present invention also provides a hot press welding device, including a hot press head assembly, a power mechanism and a hot press head leveling mechanism. The hot press head assembly is mounted on a floating plate of the hot press head leveling mechanism. The power mechanism is connected to the mounting plate of the hot press head leveling mechanism and is used to drive the hot press head leveling mechanism and the hot press head assembly to move toward or away from the object to be pressed.

[0014] After adopting the above technical solution, when the surface of the object to be pressed is tilted relative to the hot press head, after the hot press head contacts the object, the hot press welding device continuously applies pressure to the hot press leveling mechanism until the target pressure value is reached. During this process, the floating plate deflects around the rotation axis as the center, so that the hot press head is completely in contact with the surface of the object to be pressed, and the leveling operation is automatically completed, thereby ensuring the hot press welding effect. Furthermore, considering that the hot press end of the hot press head that contacts the object to be pressed is long and narrow, if the object to be pressed is tilted relative to the hot press head in the length direction of the hot press head, the impact on the hot press welding will be relatively large. Based on this, the present invention restricts the leveling dimension of the floating plate to the length direction of the hot press head by rotating the axis, and restricts the range of motion of the floating plate to only rotating around the rotation axis, making the entire leveling process more controllable and also preventing the floating plate from shifting its position after long-term use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the hot press head leveling mechanism of the present invention;

[0016] Figure 2 for Figure 1 A sectional view;

[0017] Figure 3 for Figure 1 Enlarged view of part A;

[0018] Figure 4 This is a schematic diagram of the hot press head of the present invention in a horizontal state;

[0019] Figure 5 This is a schematic diagram of the hot press head leveling mechanism of the present invention, which automatically adjusts the hot press head to an inclined state.

[0020] Figure 6 This is a schematic diagram of the hot-press welding apparatus of the present invention;

[0021] In the diagram: 1. Floating plate; 2. Hot press head assembly; 21. Hot press head; 3. Rotating shaft; 4. Elastic element; 5. Fixed plate; 51. Thick part; 52. Thin part; 53. Slide rail; 6. Sliding plate; 61. Sliding block; 7. Automatic return assembly; 71. Power component; 72. Positioning pin; 721. Mating part; 73. Return hole; 74. Bushing; 75. Floating joint; 751. Floating groove; 8. Power mechanism; 9. Bracket. Detailed Implementation

[0022] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Example 1: As Figures 1-6As shown, a hot press head leveling mechanism includes a mounting plate, a floating plate 1, and two elastic element groups. The floating plate 1 is rotatably mounted on the mounting plate via a rotating shaft 3 for mounting a hot press head assembly 2. The hot press head assembly 2 has a hot press head 21, and the rotating shaft 3 is perpendicular to the length direction of the hot press head 21. The two elastic element groups are distributed on both sides of the rotating shaft 3, and each elastic element group has at least one elastic element 4. The elastic element 4 is connected between the mounting plate and the floating plate 1.

[0024] Specifically, when the surface of the object to be pressed is tilted relative to the hot press head 21, after the hot press head 21 contacts the object to be pressed, the hot press welding device continuously applies pressure to the hot press leveling mechanism until the target pressure value is reached. During this process, the floating plate 1 deflects around the rotation axis 3, so that the hot press head 21 is completely in contact with the surface of the object to be pressed, and the leveling operation is automatically completed, thereby ensuring the hot press welding effect.

[0025] Furthermore, considering that the hot pressing end of the hot pressing head 21 that contacts the object to be pressed is long and narrow, if the object to be pressed is tilted relative to the hot pressing head 21 in the length direction of the hot pressing head 21, it will have a greater impact on the hot pressing welding. Based on this, this embodiment restricts the leveling dimension of the floating plate 1 to the length direction of the hot pressing head 21 by rotating the shaft 3, and restricts the range of motion of the floating plate 1 to only be able to rotate around the rotating shaft 3, making the entire leveling process more controllable and also preventing the floating plate 1 from shifting its position after long-term use.

[0026] In this embodiment, elastic elements 4 are also provided on both sides of the rotating shaft 3. The presence of elastic elements 4 allows the hot press head 21 to smoothly contact the object to be pressed and apply pressure to the object, thereby avoiding damage to the object to be pressed by the hot press head 21.

[0027] Among them, the elastic element 4 can be a spring, etc.; each elastic element group can have 1, 2, 3, or 4 elastic elements 4; in Figure 1 In the hot press head leveling mechanism shown, each elastic element group has two elastic elements 4, and the two elastic elements 4 in each elastic element group are arranged along the axial direction of the rotating shaft 3. In addition, in order to maintain the balance on both sides, the number of elastic elements 4 in the two elastic element groups is equal, and the two elastic element groups are symmetrical about the central axis of the rotating shaft 3. Retaining rings are provided at both ends of the rotating shaft 3 to prevent the floating plate 1 from being displaced relative to the mounting plate in the axial direction of the rotating shaft 3.

[0028] Example 2: Based on Example 1, as follows Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, the mounting plate includes a fixed plate 5 and a sliding plate 6. The sliding plate 6 is slidably mounted on the fixed plate 5, and the sliding direction relative to the fixed plate 5 is parallel to the fixed plate 5 and perpendicular to the axial direction of the rotation axis 3. The elastic element 4 is connected between the sliding plate 6 and the floating plate 1.

[0029] Figure 4 In the middle, the hot press head 21 is in a horizontal position. Figure 5 In the middle, the hot press head is in an inclined state, so that Figure 4 The orientation and angle shown are examples of the following: the axis of the rotating shaft 3 is located in the front-to-back direction, the length direction of the hot press head 21 is located in the left-to-right direction, and the sliding plate 6 can slide in the left-to-right direction.

[0030] exist Figure 5 In the process, the upper surface of the object to be pressed has a situation where the right side is higher than the left side. The angle between the upper surface of the object to be pressed and the horizontal plane is α. The entire leveling process is as follows: during the process of the hot press head 21 contacting the object to be pressed and applying pressure, the right side of the hot press head 21 and the floating plate 1 will rotate upward around the rotation axis 3, and the floating plate 1 will also push the sliding plate 6 to slide to the left through the elastic component group.

[0031] It should be noted that the axial direction of the rotating shaft 3 and the sliding direction of the sliding plate 6 are not limited to... Figure 4 , Figure 5 As shown, using Figure 4 , Figure 5 Examples are given only to illustrate relative spatial relationships.

[0032] Specifically, the sliding plate 6 can slide, which can reduce the leveling resistance, speed up the response speed, improve the leveling flexibility, and make the hot press head 21 tilt more smoothly, quickly and easily, thereby better ensuring the hot pressing effect of the hot press head. In addition, it can also increase the deflection amplitude and increase the leveling range.

[0033] Example 3: Based on Example 2, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the hot press head leveling mechanism also includes an automatic return component 7, which is disposed between the fixed plate 5 and the sliding plate 6 to automatically return the sliding plate 6 to its original position.

[0034] The automatic return assembly 7 may include, but is not limited to, a power component 71, a positioning pin 72, and a return hole 73 disposed on the sliding plate 6. The return hole 73 has a flared section and a positioning section. The inner diameter of the flared section gradually increases from the end near the positioning section to the end far from the positioning section. The power component 71 is mounted on the fixed plate 5 and connected to the positioning pin 72. During the process of the power component 71 driving the positioning pin 72 to extend, the positioning pin 72 moves from the flared section into the positioning section to return the sliding plate 6 to center.

[0035] Specifically, when the hot press head 21 is pressed down to almost contact the object being pressed, the power component 71 drives the positioning pin 72 to retract, allowing the sliding plate 6 to be in a free state and slide. After one hot press is completed and the hot press head 21 is away from the object being pressed, the power component 712 drives the positioning pin 72 to extend. As the positioning pin 72 enters the positioning section along the flared section, it drives the sliding plate 6 to return to its original position and brings it to the zero position. The automatic return component 7 in this embodiment ensures that the sliding plate 6 returns to its original position after each hot press, without the need for manual intervention, which is convenient and time-saving.

[0036] It should be noted that the power component 71 can be a cylinder, hydraulic cylinder, electric cylinder, etc., and is not limited here, as long as it can drive the locating pin 72 to extend and retract. The flared section can be trumpet-shaped or cone-shaped.

[0037] Example 4: Based on Example 3, such as Figure 2 As shown, a bushing 74 is provided inside the fixing plate 5 to cooperate with the positioning pin 72. During the extension process, the positioning pin 72 passes through the bushing 74 and extends into the return hole.

[0038] Specifically, the position of bushing 74 is always fixed, and the positioning pin 72 moves back and forth inside bushing 74. This setting is equivalent to using bushing 74 as a reference to straighten the sliding plate 6, thereby ensuring that the sliding plate 6 can be perfectly straightened to the zero position every time. This avoids the sliding plate 6 from being inconsistent in its straightening position each time due to the positioning pin 72 shifting after long-term use or the connection between the positioning pin 72 and the power component 71 becoming loose. It also ensures that the floating plate 1 is in a horizontal state after each straightening of the sliding plate 6, and that there is no position shift.

[0039] Among them, bushing 74 can be an oil-free bushing.

[0040] Example 5: Based on Example 4, as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the power component 71 is connected to the positioning pin 72 via a floating joint 75.

[0041] Specifically, the floating joint 75 can compensate for the eccentricity between the positioning pin 72 and the power component 71, so that the two can work normally even with a slight eccentricity, thereby reducing the positional accuracy of the power component 71 on the fixed plate 5.

[0042] Among them, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the floating joint 75 includes a connecting block connected to the power component 71. The connecting block is provided with a floating groove 751. The width of the opening of the floating groove 751 is smaller than its internal width. The positioning pin 72 is provided with a mating part 721. The mating part 721 enters the floating groove 751 through the opening on the side of the floating groove 751. It has floating space in the floating groove 751 and is not allowed to detach from the opening.

[0043] This floating structure 75 is simple and reliable, and can be easily floated to the positioning pin 72.

[0044] It should be noted that when the positioning pin 72 has floating space relative to the power component 71, in order to allow the positioning pin 72 to smoothly enter the bushing 74, the lower end of the positioning pin 72 can be made into a cone shape, which can also ensure that the positioning pin 72 does not detach from the bushing 74 during the extension and retraction process.

[0045] Example 6: Based on Example 4 or Example 5, such as Figure 1 , Figure 2 As shown, the fixed plate 5 has a thick part 51 and a thin part 52. The thick part 51 protrudes from the thin part 52 toward the sliding plate 6. One of the thin part 52 and the sliding plate 6 is fixed with a slide rail 53, and the other is fixed with a slide block 61. The slide block 61 is provided with a slide groove. The sliding plate 6 is slidably mounted on the fixed plate 5 through the cooperation of the slide rail 53 and the slide groove. The bushing 74 is provided on the thick part 51.

[0046] Specifically, the slide groove and slide rail 54 are provided to facilitate the smooth sliding of the sliding plate 6 relative to the fixed plate 5 and reduce resistance. The fixed plate is provided with a thick part 51 and a thin part 52. The thinned part 52 provides installation space for the slide groove block 61 and the slide rail 53, which is conducive to the compactness and aesthetics of the entire mechanism structure. The bushing 74 is set in the thick part 51, which allows the bushing 74 to be as long as possible without increasing the volume and weight of the fixed plate 5. This allows for better guidance and positioning of the positioning pin 72, minimizing the range of wobbling of the positioning pin 72 within the bushing 74, thereby more accurately returning the sliding plate 6 to its original position.

[0047] The slide groove has protrusions on both sides parallel to its extension direction, and the slide rail 54 has grooves on both sides parallel to its extension direction. The protrusions are embedded in the grooves on the corresponding sides, which can prevent the slide rail 54 from shaking in the slide groove and also prevent the slide rail 54 from leaving the slide groove from the groove opening directly opposite the bottom of the groove.

[0048] Example 7: Based on any one of Examples 1-6, such as Figure 2 As shown, at least one protrusion is provided on the opposite side of the mounting plate and the floating plate 1. The protrusions on the mounting plate and the floating plate 1 are staggered from each other and are provided with through holes. The rotating shaft 3 passes through each through hole simultaneously.

[0049] Example 8: Figure 6 As shown, a hot press welding device includes a hot press head assembly 2, a power mechanism 8, and a hot press head leveling mechanism as described in any of the embodiments 1-7. The hot press head assembly 2 is mounted on the floating plate 1 of the hot press head leveling mechanism. The power mechanism 8 is connected to the mounting plate of the hot press head leveling mechanism and is used to drive the hot press head leveling mechanism and the hot press head assembly 2 to move toward or away from the object to be pressed.

[0050] It should be noted that the power mechanism 8 can be a hydraulic cylinder, pneumatic cylinder, electric cylinder, etc. The hot press welding device also includes a bracket 9. The power mechanism 8 is connected to the mounting plate via a sliding block, which is slidably mounted on the bracket 9.

[0051] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hot press head leveling mechanism, characterized in that, The assembly includes a mounting plate, a floating plate (1), and two elastic element groups. The floating plate (1) is rotatably mounted on the mounting plate via a rotating shaft (3). The floating plate (1) is used to mount a hot press head assembly (2). The hot press head assembly (2) has a hot press head (21). The rotating shaft (3) is perpendicular to the length direction of the hot press head (21). The two elastic element groups are distributed on both sides of the rotating shaft (3). Each elastic element group has at least one elastic element (4). The elastic element (4) is connected between the mounting plate and the floating plate (1). The mounting plate includes a fixed plate (5) and a sliding plate (6). The sliding plate (6) is slidably mounted on the fixed plate (5), and the sliding direction relative to the fixed plate (5) is parallel to the fixed plate (5) and perpendicular to the axial direction of the rotating shaft (3). The elastic element (4) is connected between the sliding plate (6) and the floating plate (1). It also includes an automatic return component (7), which is mounted on the fixed plate (5) and acts on the sliding plate (6) to make the sliding plate (6) automatically return to center. The automatic return assembly (7) includes a power component (71), a positioning pin (72), and a return hole (73) provided on the sliding plate (6). The return hole (73) has a flared section and a positioning section. The inner diameter of the flared section gradually increases from the end near the positioning section to the end away from the positioning section. The power component (71) is mounted on the fixed plate (5) and connected to the positioning pin (72). During the process of the power component (71) driving the positioning pin (72) to extend, the positioning pin (72) moves from the flared section into the positioning section to return the sliding plate (6) to center.

2. The hot press head leveling mechanism according to claim 1, characterized in that, The fixing plate (5) is provided with a bushing (74) that cooperates with the positioning pin (72). The positioning pin (72) passes through the bushing (74) and extends into the return hole during the extension process.

3. The hot press head leveling mechanism according to claim 2, characterized in that, The power component (71) is connected to the positioning pin (72) via a floating joint (75).

4. The hot press head leveling mechanism according to claim 3, characterized in that, The floating joint (75) includes a connecting block connected to the power component (71). The connecting block is provided with a floating groove (751). The width of the opening of the floating groove (751) is smaller than its internal width. The positioning pin (72) is provided with a mating part (721). The mating part (721) enters the floating groove (751) through the opening on the side of the floating groove (751). There is floating space in the floating groove (751), and it is not allowed to detach from the opening.

5. The hot press head leveling mechanism according to claim 2, characterized in that, The fixing plate (5) has a thick part (51) and a thin part (52). The thick part (51) protrudes from the thin part (52) toward the sliding plate (6). One of the thin part (52) and the sliding plate (6) is fixed with a slide rail (53), and the other is fixed with a slide block (61). The slide block (61) is provided with a slide groove. The sliding plate (6) is slidably mounted on the fixing plate (5) through the cooperation of the slide rail (53) and the slide groove. The bushing (74) is provided on the thick part (51).

6. The hot press head leveling mechanism according to claim 1, characterized in that, The mounting plate and the floating plate (1) are provided with at least one protrusion on opposite sides. The protrusions on the mounting plate and the floating plate (1) are staggered from each other and are provided with through holes. The rotating shaft (3) passes through each through hole simultaneously.

7. A hot-press welding apparatus, characterized in that, The device includes a hot press head assembly (2), a power mechanism (8), and a hot press head leveling mechanism as described in any one of claims 1-6. The hot press head assembly (2) is mounted on the floating plate (1) of the hot press head leveling mechanism. The power mechanism (8) is connected to the mounting plate of the hot press head leveling mechanism and is used to drive the hot press head leveling mechanism and the hot press head assembly (2) to move toward or away from the object to be pressed.

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