A fixture for an automatic soldering machine

Abstract

This utility model relates to a clamp for an automatic soldering machine, aiming to solve the technical problem that most current automatic soldering machine clamps use a bolt-based direct pressure fixing method, where the clamping force relies on manual experience for adjustment, and is prone to workpiece surface damage and deformation due to excessive force. The clamp includes a base frame, with sliding grooves on both the front and rear inner sidewalls. Two pads and two threaded sleeves are slidably connected between the front and rear sliding grooves, with the two pads located between the two threaded sleeves. A second spring is fixedly connected between the pads and the threaded sleeves. A clamping block is fixedly connected to the top of the pad, and a crossbar is fixedly connected to the sidewall of the clamp. The top surface of the crossbar has several helical teeth. This utility model, by setting pads and clamping blocks below the left and right clamping blocks, allows the clamping blocks to move to both sides under pressure. During this process, the helical teeth on the crossbar cooperate with the limiting teeth of the top frame to achieve unidirectional movement. It can automatically adapt the clamping spacing according to the workpiece size, avoiding workpiece damage caused by hard contact and improving clamping safety and adaptability.

Description

Technical Field

[0001] This utility model relates to the field of soldering machine technology, specifically to a fixture for an automatic soldering machine. Background Technology

[0002] In the electronics manufacturing industry, automatic soldering machines have become core equipment for the mass production of products such as circuit boards and electronic components due to their high efficiency and stable soldering performance. As a key component of automatic soldering machines, the fixture's main function is to accurately fix the workpiece to be soldered, ensuring the workpiece's stable position during the soldering process and preventing solder joint misalignment, incomplete soldering, or missed soldering caused by vibration or displacement, which directly affects product quality and production efficiency.

[0003] Currently, most automatic soldering machine fixtures use bolts for direct clamping, and the clamping force relies on manual experience for adjustment. Excessive force can easily cause surface damage and deformation of the workpiece, posing a higher risk of damage to precision electronic components, thus affecting production efficiency and product yield. Therefore, a new technical solution is proposed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a fixture for an automatic soldering machine. This solves the technical problem that most current automatic soldering machine fixtures use bolts for direct pressure fixing, and the clamping force depends on manual experience for adjustment, which can easily cause damage and deformation to the workpiece surface due to excessive force.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a fixture for an automatic soldering machine is designed, including a base frame. The front and rear inner sidewalls of the base frame are provided with sliding grooves. Two pads and two threaded sleeves are slidably connected between the front and rear sliding grooves, and the two pads are located between the two threaded sleeves. A second spring is fixedly connected between the pads and the threaded sleeves. A clamping block is fixedly connected to the top of the pad. A crossbar is fixedly connected to the sidewall of the clamping block. The top surface of the crossbar is provided with several helical teeth. The top frame sidewall above the helical teeth is provided with protrusions and limiting teeth.

[0006] In this design, pads are placed below the left and right clamping blocks. The pads are connected to the threaded sleeves via spring No. 2. When a workpiece is placed in, the clamping blocks are squeezed and move to both sides. During the process, the helical teeth on the crossbar cooperate with the limiting teeth of the top frame to achieve unidirectional movement. The clamping spacing can be automatically adapted according to the workpiece size to avoid workpiece damage caused by hard contact and improve clamping safety and adaptability.

[0007] Preferably, a top frame is fixedly connected to the top of the bottom frame, and the surface of the top frame is provided with two rectangular grooves. The clamping block passes through the rectangular grooves and contacts the inner wall of the rectangular grooves. Protrusions are fixedly connected to the outer walls of the left and right ends of the top frame.

[0008] In practical applications, the rectangular groove can limit the movement of the clamping block, restricting any wobbling that may occur during the movement of the clamping block and ensuring stable clamping of the workpiece; the protrusion provides a mounting fulcrum for the limiting teeth.

[0009] Preferably, the limiting tooth is rotatably connected to the bottom of the protrusion via a hinge seat, the bottom end of the limiting tooth contacts the inclined tooth below, and a No. 1 spring is fixedly connected between the limiting tooth and the bottom surface of the protrusion.

[0010] In practical applications, when the clamping block drives the crossbar to expand outward to accommodate the size of the workpiece, the inclined surface of the helical teeth will push the limiting teeth to rotate upward, while compressing the No. 1 spring. At this time, the clamping block can move smoothly. When the clamping block tends to retract inward, the limiting teeth will engage with the straight surface of the helical teeth under the elastic force of the No. 1 spring, thereby preventing the crossbar from moving in the opposite direction and avoiding loosening of the workpiece.

[0011] Preferably, the outer end of the crossbar is connected to a side bar, and a sliding rod is fixedly connected to the surface of the side bar facing the top frame. The sliding rod passes through the side wall of the top frame and is slidably connected to the top frame.

[0012] In practical applications, the crossbar and side bar are connected to form a whole, allowing them to move synchronously. When the clamping block moves, the sliding bar slides along the side wall of the top frame along with the side bar, further restricting the movement trajectory of the crossbar and preventing it from shifting up and down or back and forth due to force.

[0013] Preferably, the slide bar and the crossbar have the same length, and the surface of the slide bar is provided with an inwardly recessed thread and a nut is threadedly fitted onto it.

[0014] In practical applications, after the clamping block is adjusted to a suitable position for clamping the workpiece, tighten the nut to make it fit tightly against the side wall of the top frame. The position of the slide rod can be completely locked by friction, thereby fixing the clamping block.

[0015] Preferably, a bidirectional lead screw is rotatably connected between the left and right inner sidewalls of the bottom frame. The bidirectional lead screw passes through two threaded sleeves and is threadedly connected to the threaded sleeves. The bidirectional lead screw passes through a round hole in the sidewall of the pad and does not contact the pad.

[0016] In practical applications, rotating the double-acting lead screw drives the two threaded sleeves to move synchronously inward or outward along the slide groove. By changing the distance between the threaded sleeve and the pad, the initial compression of the second spring can be adjusted, thus changing the clamping force.

[0017] Preferably, a rotating rod is rotatably connected to the inner side of the groove at one end of the clamping block, an arc-shaped block is fixedly connected to the surface of the rotating rod, the arc-shaped block is fixedly connected to the abutment, the top end of the rotating rod penetrates the top surface of the clamping block, and the surface of the rotating rod is also provided with an inwardly recessed thread and a nut is threadedly fitted on it.

[0018] In practical applications, the rotating rod can rotate within the groove of the clamping block, thereby driving the arc-shaped block and the abutment to adjust their angles synchronously and contact the workpiece. After the angle adjustment is completed, the nut is rotated to lock the position of the rotating rod. In addition, the frictional damping of the rotating rod itself can effectively prevent the abutment from shifting its angle due to vibration during the soldering process.

[0019] Preferably, a support frame is fixedly connected to both the left and right edges of the bottom of the top frame, the crossbar passes through the support frame, and the width of the crossbar is the same as the inner width of the support frame, and a positioning baffle is fixedly connected to the top edge of the top frame.

[0020] In practical applications, the support frame provides lateral support to the crossbar, and its inner width matches the width of the crossbar, further limiting the swaying of the crossbar; the positioning baffle provides a clear reference for workpiece placement, and the operator can quickly align the edge of the workpiece with the positioning baffle to complete the placement.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model provides pads below the left and right clamping blocks. The pads are connected to the threaded sleeves via spring No. 2. When a workpiece is placed in, the clamping blocks are squeezed and move to both sides. During the process, the helical teeth on the crossbar cooperate with the limiting teeth of the top frame to achieve unidirectional movement. The clamping distance can be automatically adapted according to the workpiece size, avoiding workpiece damage caused by hard contact and improving clamping safety and adaptability.

[0023] 2. This utility model provides a side bar and a sliding bar at the outer end of the crossbar. When the crossbar moves with the clamping block, the sliding bar also moves. After the clamping block position is adjusted, the nut on the surface of the sliding bar is rotated to make it contact the side wall of the top frame, thereby completely restricting the movement of the clamping block. This effectively prevents the workpiece from loosening due to vibration and other factors during the welding process, ensuring clamping stability and guaranteeing welding accuracy. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom frame structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the top frame structure of this utility model;

[0027] Figure 4 This is a partial enlarged view of point A of this utility model;

[0028] In the diagram: 1. Base frame; 101. Slide groove; 2. Top frame; 201. Rectangular groove; 202. Limiting tooth; 203. Spring No. 1; 204. Support frame; 205. Positioning baffle; 3. Clamping block; 4. Rotating rod; 401. Arc block; 402. Support column; 5. Pad block; 6. Two-way lead screw; 601. Spring No. 2; 7. Threaded sleeve; 8. Crossbar; 801. Helical tooth; 9. Side rod; 10. Slide rod; 1001. Nut; 11. Protrusion. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Example 1: A fixture for an automatic soldering machine, see [link / reference] Figures 1 to 4 The device includes a base frame 1. The front and rear inner walls of the base frame 1 are provided with sliding grooves 101. Two pads 5 and two threaded sleeves 7 are slidably connected between the front and rear sliding grooves 101. The sliding grooves 101 provide sliding tracks for the pads 5 and the threaded sleeves 7, ensuring that they can only move in the horizontal direction. The two pads 5 are located between the two threaded sleeves 7. A second spring 601 is fixedly connected between the pads 5 and the threaded sleeves 7. A clamping block 3 is fixedly connected to the top of the pads 5. A crossbar 8 is fixedly connected to the side wall of the clamping block 3. Several helical teeth 801 are provided on the top surface of the crossbar 8. A protrusion 11 and a limiting tooth 202 are provided on the side wall of the top frame 2 above the helical teeth 801.

[0031] In the above technical solution, the second spring 601 between the pad 5 and the threaded sleeve 7 is in a pre-compressed state. Under normal conditions, the elastic force pushes the pad 5 and the clamping block 3 to move inward to form an initial clamping force. When the workpiece is placed, the workpiece squeezes the clamping blocks 3 on both sides, causing the pad 5 to slide outward and further compress the second spring 601. At the same time, the crossbar 8 moves synchronously with the clamping block 3, and its surface helical teeth 801 contact the limiting teeth 202 of the top frame 2 and generate relative sliding. The entire clamping process effectively avoids damage to the workpiece caused by rigid clamping through the elastic buffer of the second spring 601, and can adapt to the clamping requirements of workpieces of different sizes, improving clamping safety and adaptability.

[0032] Specifically, such as Figure 4As shown, protrusions 11 are fixedly connected to the outer walls of both the left and right ends of the top frame 2. The limiting teeth 202 are rotatably connected to the bottom of the protrusions 11 through the hinge seats. The bottom end of the limiting teeth 202 contacts the inclined teeth 801 below. A spring 203 is fixedly connected between the limiting teeth 202 and the bottom surface of the protrusions 11. Support frames 204 are fixedly connected to the left and right edges of the bottom of the top frame 2. The crossbar 8 passes through the support frame 204, and the width of the crossbar 8 is the same as the inner width of the support frame 204. The support frame 204 supports the crossbar 8 and restricts its left and right swaying.

[0033] In the above technical solution, the first spring 203 normally pushes the limiting tooth 202 downward, so that its bottom end is tightly engaged with the helical tooth 801 of the crossbar 8. When the crossbar 8 moves outward, the inclined surface of the helical tooth 801 pushes the limiting tooth 202 to rotate upward and compress the first spring 203, realizing unidirectional sliding, ensuring that the clamping block 3 can only expand outward and will not loosen inward, thus avoiding workpiece displacement during welding.

[0034] Furthermore, such as Figure 3 As shown, the outer end of the crossbar 8 is connected to a side bar 9. A slide bar 10 is fixedly connected to the surface of the side bar 9 facing the top frame 2. The slide bar 10 passes through the side wall of the top frame 2 and is slidably connected to the top frame 2. The slide bar 10 has the same length as the crossbar 8, and the surface of the slide bar 10 is provided with an inwardly recessed thread and a nut 1001 is threadedly fitted on it. The inwardly recessed thread will not hinder the normal sliding of the slide bar 10. When the crossbar 8 moves, the slide bar 10 is driven to slide synchronously along the through hole of the top frame 2 through the side bar 9. When the clamping block 3 is adjusted to the appropriate position, the nut 1001 on the surface of the slide bar 10 is tightened so that it abuts tightly against the side wall of the top frame 2. The position of the slide bar 10 is locked by friction, thereby fixing the crossbar 8 and the clamping block 3, avoiding the micro-displacement of the clamping block 3 caused by welding vibration. This is especially suitable for high-precision welding scenarios.

[0035] It is worth noting that, such as Figure 2 As shown, a bidirectional lead screw 6 is rotatably connected between the left and right inner sidewalls of the base frame 1. The bidirectional lead screw 6 passes through two threaded sleeves 7 and is threadedly connected to the threaded sleeves 7. The bidirectional lead screw 6 passes through the round hole in the sidewall of the pad 5 and does not contact the pad 5. By rotating the bidirectional lead screw 6, the position of the threaded sleeve 7 can be adjusted, thereby pre-adjusting the compression of the second spring 601 and changing the clamping force. The elastic force of the second spring 601 can be precisely controlled by the bidirectional lead screw 6 to achieve stepless adjustment of the clamping force and meet the clamping requirements of workpieces of different materials. The synchronous movement of the threaded sleeves 7 ensures that the elastic force of the springs on both sides is symmetrical, avoiding workpiece tilting caused by uneven force on the clamping block 3.

[0036] It is worth noting that, such as Figure 1As shown, a rotating rod 4 is rotatably connected to the inner side of the groove at one end of the clamping block 3. An arc-shaped block 401 is fixedly connected to the surface of the rotating rod 4. The arc-shaped block 401 is fixedly connected to the abutment 402. The top end of the rotating rod 4 penetrates the top surface of the clamping block 3. The surface of the rotating rod 4 is also provided with an inwardly recessed thread and a nut 1001 is threadedly fitted onto it. The rotation of the rotating rod 4 has a friction damping effect. After the workpiece is placed and clamped, the rotating rod 4 rotates, causing the arc-shaped block 401 and the abutment 402 to rotate synchronously, thereby adjusting the abutment 402 to contact the workpiece. At this time, tightening the nut 1001 can lock the position of the rotating rod 4 through friction. With its own friction damping, it prevents the abutment 402 from rotating on its own during the clamping process. Together with the positioning baffle 205 and the clamping block 3, it completes the constraint in four directions and ensures the stability of the soldering process.

[0037] It is worth describing that a top frame 2 is fixedly connected to the top of the bottom frame 1. The surface of the top frame 2 is provided with two rectangular grooves 201. A positioning baffle 205 is fixedly connected to the top edge of the top frame 2. The clamping block 3 passes through the rectangular groove 201 and contacts the inner wall of the rectangular groove 201. The guiding function of the rectangular groove 201 avoids the clamping block 3 from tilting due to force, ensuring clamping symmetry. The positioning baffle 205 shortens the alignment time of the workpiece and improves the operating efficiency.

[0038] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0039] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A jig for an automatic soldering machine comprising a base frame (1), characterized in that, The bottom frame (1) has sliding grooves (101) on both the front and rear inner sidewalls. Two pads (5) and two threaded sleeves (7) are slidably connected between the front and rear sliding grooves (101). The two pads (5) are located between the two threaded sleeves (7). A second spring (601) is fixedly connected between the pads (5) and the threaded sleeves (7). A clamping block (3) is fixedly connected to the top of the pads (5). A crossbar (8) is fixedly connected to the sidewall of the clamping block (3). The top surface of the crossbar (8) is provided with several helical teeth (801). The sidewall of the top frame (2) above the helical teeth (801) is provided with a protrusion (11) and a limiting tooth (202).

2. The fixture for an automatic soldering machine according to claim 1, wherein The top of the bottom frame (1) is fixedly connected to the top frame (2). The surface of the top frame (2) is provided with two rectangular grooves (201). The clamping block (3) passes through the rectangular groove (201) and contacts the inner wall of the rectangular groove (201). The outer walls of the left and right ends of the top frame (2) are fixedly connected with protrusions (11).

3. The fixture for an automatic soldering machine according to claim 1, wherein The limiting tooth (202) is rotatably connected to the bottom of the protrusion (11) via a hinge seat. The bottom end of the limiting tooth (202) contacts the helical tooth (801) below, and a No. 1 spring (203) is fixedly connected between the limiting tooth (202) and the bottom surface of the protrusion (11).

4. The fixture for an automatic soldering machine according to claim 1, wherein The outer end of the crossbar (8) is connected to a side bar (9), and a slide bar (10) is fixedly connected to the surface of the side bar (9) facing the top frame (2). The slide bar (10) passes through the side wall of the top frame (2) and is slidably connected to the top frame (2).

5. The fixture for an automatic soldering machine according to claim 4, wherein The slide bar (10) has the same length as the cross bar (8), and the surface of the slide bar (10) is provided with an inwardly recessed thread and a nut (1001) is threadedly fitted on it.

6. The fixture for an automatic soldering machine according to claim 1, wherein A bidirectional lead screw (6) is rotatably connected between the left and right inner sidewalls of the bottom frame (1). The bidirectional lead screw (6) passes through two threaded sleeves (7) and is threadedly connected to the threaded sleeves (7). The bidirectional lead screw (6) passes through the round hole in the sidewall of the pad (5) and does not contact the pad (5).

7. The fixture for an automatic soldering machine according to claim 1, wherein A rotating rod (4) is rotatably connected to the inner side of the groove at one end of the clamping block (3). An arc-shaped block (401) is fixedly connected to the surface of the rotating rod (4). The arc-shaped block (401) is fixedly connected to the abutment (402). The top end of the rotating rod (4) penetrates the top surface of the clamping block (3). The surface of the rotating rod (4) is also provided with an inwardly recessed thread and a nut (1001) is threadedly fitted onto it.

8. The fixture for an automatic soldering machine according to claim 1, wherein Support frames (204) are fixedly connected to the left and right edges of the bottom of the top frame (2). The crossbar (8) passes through the support frame (204), and the width of the crossbar (8) is the same as the inner width of the support frame (204). A positioning baffle (205) is fixedly connected to the top edge of the top frame (2).

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