External inspection equipment for solder joints of solder pad components

Abstract

This utility model relates to the field of mechatronics testing equipment technology, and discloses an external inspection device for solder joints of solder components. This external inspection device for solder joints of solder components includes a cardboard feeding device for fixing evenly distributed solder pin-shaped components, comprising a cardboard with a circular hole and a roller driving the cardboard. The roller surface has small cylinders matching the circular holes in the cardboard. A transmission device includes a synchronous belt, a drive shaft, and a drive motor. The synchronous belt is tensioned through an idler pulley, and the drive shaft connects the roller and the synchronous pulley. A cutting device includes a sheet metal box and pneumatic shears. The sheet metal box has a hopper and a discharge port. This device has advantages such as efficient and non-destructive feeding, precise positioning, high-precision synchronous transmission, low-cost and efficient marking, and reliable cutting. It solves the problems of non-destructive feeding and precise positioning of fragile components, poor transmission synchronization, low efficiency of marking defective products, the need for high-precision sensors for direct sensing of small materials, and the ease of missed detection during high-speed operation.

Description

Technical Field

[0001] This utility model relates to the field of mechatronics testing equipment technology, specifically to an external inspection device for solder joints of solder pad components. Background Technology

[0002] The needle-shaped components of the solder pads are delicate and easily broken. Traditional vibratory feeders or mechanical claws can easily cause material deformation. Existing technologies use bulk feeding or simple carriers, which make it difficult to achieve uniform arrangement and directional conveying, directly affecting the accuracy of visual inspection.

[0003] Furthermore, existing equipment often uses independent motors to drive the rollers, which causes the linear speeds of the rollers to be asynchronous during the operation of the cardboard, resulting in the cardboard jamming or deviating. At the same time, flexible cardboard is prone to bending and deviating during high-speed movement, and conventional guiding mechanisms, such as single-sided baffles, cannot achieve precise trajectory control.

[0004] Traditional equipment requires shutdown to remove defective products, or relies on high-cost laser marking systems. Existing marking methods, such as manual labeling, are inefficient and prone to omissions.

[0005] Because the materials are small in size and dense in quantity, if the sensor directly senses the materials, firstly, the requirements for the sensor will be high, which will increase the cost, and secondly, the sensor is prone to missing detection when the operating speed increases.

[0006] In summary, an external inspection device for solder joints of solder pad components is proposed to solve the above problems. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides an external inspection device for solder joints of solder components. It has the advantages of efficient and non-destructive feeding, precise positioning, high-precision synchronous transmission, low-cost and efficient marking, and reliable cutting. It solves the problems of non-destructive feeding and precise positioning of fragile components, poor transmission synchronization, low efficiency of marking NG products, the need for high-precision sensors for direct sensing of small materials, and easy to miss detection during high-speed operation.

[0009] (II) Technical Solution

[0010] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A solder joint external inspection device for solder pad components, comprising:

[0011] A cardboard feeding device for fixing evenly distributed welding needle-type elements includes a cardboard with a round hole and a roller for driving the cardboard. The roller surface is provided with small cylinders that match the round hole of the cardboard.

[0012] The transmission device includes a synchronous belt, a drive shaft, and a drive motor. The synchronous belt is tensioned by an idler pulley, and the drive shaft connects the rollers and the synchronous pulley.

[0013] The cutting device includes a sheet metal box and pneumatic shears. The sheet metal box is equipped with a material hopper and a material outlet.

[0014] The marking device includes a slide cylinder, a marker pen, and a spring buffer mechanism. The marker pen is slidably connected via a linear guide rail.

[0015] The beneficial effects of this utility model are:

[0016] 1) The external inspection equipment for solder joints of the solder components and the cardboard carrying and feeding device enable the materials to be neatly and orderly arranged and evenly distributed, laying the foundation for the smooth progress of subsequent visual inspection, cutting, and marking.

[0017] 2) The external inspection equipment for the solder joints of this soldering component, the synchronous belt and the drive shaft are all driven by a single drive motor. The function of the synchronous belt is to keep all synchronous pulleys rotating at the same linear velocity. To ensure that their angular velocities are the same, all synchronous pulleys are of the same size. Considering the tension of the synchronous belt and space avoidance, the synchronous belt is tensioned by two idler pulleys. The synchronous pulleys are connected to the rollers through the drive shaft, which ensures that the angular velocities of the synchronous pulleys and rollers are the same. All rollers are of the same size, thus ensuring that their linear velocities are the same. This achieves the purpose of the cardboard moving forward through multiple rollers. The synchronous belt runs from right to left. The drive motor is located in the upper left corner. Therefore, when the drive motor rotates counterclockwise, the side of the synchronous belt pulled by the drive motor is the tight side, and the side of the synchronous belt pushed by the drive motor is the slack side. The idler pulleys need to be tensioned on the slack side. Only when the entire synchronous belt is in a taut state can we ensure that there is no misalignment or friction between the synchronous belt and the synchronous pulleys, thus maximizing the transmission efficiency and possessing the advantages of high-precision synchronous transmission.

[0018] 3) The external inspection equipment for solder joints of this solder component has a cutting device that directly cuts out NG products during movement, and a spring buffer mechanism of the marking device that avoids rigid impact, thus extending the life of the marker pen and reducing the marking omission rate. It has the advantages of efficient sorting and reliable marking during movement.

[0019] Based on the above technical solution, the present invention can be further improved as follows.

[0020] Furthermore, the rollers cooperate with the rubber-coated bearings to press the cardboard, and limit strips are provided on both sides of the cardboard's running path.

[0021] The beneficial effect of adopting the above-mentioned further solution is that all the welding tabs and pin-type elements are fixed and evenly distributed on the cardboard. The cardboard carries the material forward. There is a row of round holes on the cardboard, and the rollers that drive the cardboard have small cylinders that are adapted to the size of the round holes. The distance between the round holes is equal to the distance between the small cylinders, so the cardboard can connect with the rollers. The cardboard is pressed by the rollers and the rubber-coated bearings to ensure that the small cylinders can pass through the round holes. While driving the cardboard, the rollers also play a role in supporting the cardboard and keeping it suspended, which facilitates the subsequent visual inspection. Since the cardboard is very flexible, it may bend during the movement, which will affect the normal operation of the cardboard. Therefore, limit strips are added in the running section, including the visual inspection section, to ensure that the cardboard does not deviate from its direction.

[0022] Furthermore, the drive shaft is fixed with a sensing disk, which has a small opening to generate a material trigger signal in conjunction with a fiber optic sensor.

[0023] The beneficial effect of adopting the above-mentioned further solution is that, since the drive shaft, rollers, and synchronous belt move synchronously, a sensing disk for sensing is fixedly installed on the drive shaft. The sensing disk rotates synchronously with the drive shaft. The sensing disk has a small opening, and a signal is emitted every time the small opening passes through the fiber optic sensor. This means that the drive shaft and rollers have rotated exactly one revolution. Since the material on the cardboard is uniform, the amount of material that the rollers advance in one revolution is the same. Therefore, after processing the signal emitted by the fiber optic sensor, a trigger signal for each material can be accurately given. On the basis of high-precision synchronous transmission, the effect of precise positioning is achieved.

[0024] Furthermore, the top of the sheet metal box of the cutting device is provided with a limiting sheet metal, and the material hopper and the discharge port are connected to the bottom of the platform.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the function of the cutting device is to cut off the defective parts of the detected NG products. Its structure consists of a sheet metal box and a pneumatic shear. There is a limiting sheet metal on the top of the sheet metal box to ensure that the cardboard does not deviate inside the sheet metal box, so that the pneumatic shear can operate normally. Below the sheet metal box is a material hopper, and below the material hopper is a discharge port that passes through the table. The defective parts of the NG products that are cut off are discharged from the discharge port. The use of cutting and unloading instead of pulling out the entire material is to improve the efficiency of the equipment, so that the solder pin-type components can be cut while in motion without stopping. In addition, cutting only the defective part can also keep the defect-free part of the product intact. If the entire component is unloaded, it may damage the entire component.

[0026] Furthermore, the spring buffer mechanism of the marking device is connected to the marker fixing device to buffer the contact force between the marker and the material.

[0027] The beneficial effect of adopting the above-mentioned further solution is that the marking device is used to mark the cut NG products with a marker. Since the product is very small and the cut part is even smaller, it is not easily distinguishable by the naked eye. Therefore, marking makes it easier for people to identify. When a trigger signal is received, the slide cylinder drives the entire marker pen and related components forward to make dots. The marker pen is connected to the linear guide rail by the marker pen fixing device and can slide along the linear guide rail. The marker pen fixing device is supported by a spring buffer mechanism. When the marker pen contacts the product, the spring buffer mechanism shortens and when the marker pen leaves the product, the spring buffer mechanism returns to its original position. Without the spring buffer mechanism, the entire marking device would be rigid, and direct impact with the material would cause damage to the marker pen or the slide cylinder. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the paperboard carrying and feeding device of this utility model;

[0030] Figure 3 This is a schematic diagram of the cardboard and roller structure of this utility model;

[0031] Figure 4 This is a schematic diagram of the transmission device structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the induction disk and fiber optic sensor structure of this utility model;

[0033] Figure 6 This is a schematic diagram of the cutting device of this utility model;

[0034] Figure 7 This is a schematic diagram of the pneumatic scissors structure of this utility model;

[0035] Figure 8 This is a schematic diagram of the marking device structure of this utility model;

[0036] Figure 9 This is the assembly drawing of this utility model.

[0037] In the diagram: 1. Cardboard feeding device; 101. Cardboard; 102. Roller; 103. Rubber-coated bearing; 104. Limiting strip; 2. Transmission device; 201. Synchronous belt; 202. Drive shaft; 203. Drive motor; 204. Idler wheel; 205. Synchronous pulley; 206. Induction disc; 207. Fiber optic sensor; 3. Cutting device; 301. Sheet metal box; 302. Pneumatic shears; 303. Hopper; 304. Discharge port; 305. Limiting sheet metal; 4. Marking device; 401. Slide cylinder; 402. Marker pen; 403. Spring buffer mechanism; 404. Linear guide rail; 405. Marker pen fixing device. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] In the embodiments, by Figure 1-9 This invention provides an external inspection device for solder joints of solder pad components, comprising:

[0040] The cardboard carrying and feeding device 1 is used to fix uniformly distributed welding needle-type elements. It includes a cardboard 101 with a round hole and a roller 102 for driving the cardboard. The surface of the roller 102 is provided with small cylinders that match the round hole of the cardboard.

[0041] Transmission device 2 includes a synchronous belt 201, a transmission shaft 202 and a drive motor 203. The synchronous belt 201 is tensioned by an idler pulley 204, and the transmission shaft 202 connects the roller 102 and the synchronous pulley 205.

[0042] The cutting device 3 includes a sheet metal box 301 and a pneumatic scissors 302. The sheet metal box 301 is provided with a material bin 303 and a material outlet 304.

[0043] The marking device 4 includes a slide cylinder 401, a marker pen 402 and a spring buffer mechanism 403. The marker pen 402 is slidably connected via a linear guide rail 404.

[0044] Roller 102 and rubber-coated bearing 103 cooperate to press paperboard 101, and limit strips 104 are provided on both sides of the running path of paperboard 101;

[0045] A sensing disk 206 is fixed to the drive shaft 202. The sensing disk 206 has a small opening, which works with the fiber optic sensor 207 to generate a material trigger signal.

[0046] The top of the sheet metal box 301 of the cutting device 3 is provided with a limiting sheet metal 305, and the material bin 303 and the discharge port 304 are connected to the bottom of the table.

[0047] The spring buffer mechanism 403 of the marking device 4 is connected to the marker fixing device 405 to buffer the contact force between the marker 402 and the material.

[0048] Working principle:

[0049] Step 1: Fix the soldering pin-type components evenly on the cardboard 101 with round holes. The cardboard 101 is placed on the surface of the roller 102. The small cylinder of the roller 102 is embedded in the round hole on the surface of the cardboard 101. The cardboard 101 is tightly connected under the rubber-coated bearing 103. The cardboard 101 runs along a fixed track under the constraint of the limit strip 104 to avoid bending and deviation.

[0050] Step 2: The drive motor 203 starts and drives all the synchronous pulleys 205 to rotate synchronously through the synchronous belt 201. The drive shaft 202 connects the roller 102 and the synchronous pulleys 205 to ensure that the linear speed of the roller 102 is consistent. The sensing disk 206 rotates with the drive shaft 202, and its small opening periodically triggers the fiber optic sensor 207 to generate a signal. The drive shaft 202 and the roller 102 rotate exactly one revolution. The material on the cardboard 101 is uniform. The amount of material that the roller 102 advances in one revolution is the same. Therefore, after processing, the signal emitted by the fiber optic sensor 207 can accurately give the trigger signal for each material.

[0051] Step 3: After the vision system identifies the defective product, the pneumatic scissors 302 cut the defective part in the sheet metal box 301. During the cutting, the cardboard 101 moves continuously. The hopper 303 collects the debris and discharges it from the outlet 304. The trigger signal synchronously starts the marking device 4. The slide cylinder 401 pushes the marker pen 402 to contact the defective product along the linear guide rail 404. The spring buffer mechanism 403 compresses and absorbs the impact force to avoid rigid damage. After marking is completed, the spring buffer mechanism 403 resets and drives the marker pen 402 to retract.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An external inspection device for solder joints of solder pad components, characterized in that, include: The cardboard carrying and feeding device (1) is used to fix uniformly distributed welding needle-type elements, including cardboard (101) with round holes and rollers (102) for driving the cardboard. The surface of the rollers (102) is provided with small cylinders that match the round holes of the cardboard. The transmission device (2) includes a synchronous belt (201), a transmission shaft (202) and a drive motor (203). The synchronous belt (201) is tensioned by an idler pulley (204), and the transmission shaft (202) connects the roller (102) and the synchronous pulley (205). The cutting device (3) includes a sheet metal box (301) and pneumatic scissors (302). The sheet metal box (301) is provided with a hopper (303) and a discharge port (304). The marking device (4) includes a slide cylinder (401), a marker (402) and a spring buffer mechanism (403), with the marker (402) slidably connected via a linear guide rail (404).

2. The external inspection equipment for solder joints of solder pad components according to claim 1, characterized in that: The roller (102) and the rubber-coated bearing (103) work together to press the cardboard (101), and limit strips (104) are provided on both sides of the running path of the cardboard (101).

3. The external inspection equipment for solder joints of solder pad components according to claim 1, characterized in that: The drive shaft (202) is fixed with a sensing disk (206), which has a small opening to generate a material trigger signal in conjunction with a fiber optic sensor (207).

4. The external inspection equipment for solder joints of solder pad components according to claim 1, characterized in that: The top of the sheet metal box (301) of the cutting device (3) is provided with a limiting sheet metal (305), and the hopper (303) and the discharge port (304) are connected to the bottom of the platform.

5. The external inspection equipment for solder joints of solder pad components according to claim 1, characterized in that: The spring buffer mechanism (403) of the marking device (4) is connected to the marker fixing device (405) to buffer the contact force between the marker (402) and the material.

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