A carrier belt conveyor

Abstract

This utility model discloses a carrier tape conveying device, belonging to the field of chip testing technology. The carrier tape conveying device includes a first conveying wheel, a second conveying wheel, and a positioning component. The positioning component is sleeved on the first and second conveying wheels. The positioning component has multiple protrusions, all of which can engage with positioning holes to achieve positioning of the carrier tape. Multi-point positioning of the carrier tape is achieved through multiple protrusions, which greatly improves the accuracy and stability of carrier tape conveying and reduces misalignment compared to the single-point positioning of existing technologies.

Description

Technical Field

[0001] This utility model belongs to the field of chip testing technology, and in particular relates to a carrier tape transmission device. Background Technology

[0002] The current semiconductor IC chip testing process is as follows: The tape-and-reel equipment places the IC chips, which have undergone baking and vision system inspection, into a carrier tape. The carrier tape containing the IC chips is then covered with a film and heat-sealed. After heat sealing, the vision system inspects the carrier tape (containing the IC chips) for quality. Carrier tapes (containing IC chips) that fail inspection are removed by the tape-and-reel equipment, then re-taped and inspected; carrier tapes (containing IC chips) that pass inspection can be stored. Therefore, the precise positioning capability of the carrier tape conveyor directly affects the reliability of the vision inspection system and is a key component in ensuring overall inspection accuracy.

[0003] Existing carrier belt conveyor devices achieve carrier belt positioning by setting positioning holes on the carrier belt and using carrier belt positioning protrusions on the conveyor wheel to position these holes. However, existing carrier belt positioning protrusions can only position one carrier belt positioning hole during operation, making the carrier belt prone to misalignment during conveying, leading to failure of vision system inspection after heat sealing. Utility Model Content

[0004] This invention provides a carrier belt conveying device, which aims to solve the problem of carrier belts being easily misaligned during the conveying process in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a carrier belt conveying device. The carrier belt is provided with multiple positioning holes. The conveying device includes a first conveying wheel, a second conveying wheel, and a positioning component. The positioning component is sleeved on the first conveying wheel and the second conveying wheel. The positioning component has multiple protrusions, all of which can engage with the positioning holes to achieve the positioning of the carrier belt.

[0007] This invention employs a positioning component with multiple protrusions between the carrier belt and two transmission wheels. These protrusions engage with positioning holes on the carrier belt, so that during the movement of the carrier belt driven by the transmission wheels, the carrier belt located between the two transmission wheels is also positioned due to the engagement of the positioning holes with the protrusions. This achieves multi-point positioning of the carrier belt, which greatly improves the accuracy and stability of the carrier belt transmission and reduces misalignment compared to the single-point positioning of the prior art.

[0008] As a further improvement of this utility model, the positioning component is a chain, which is sleeved on the first transmission wheel and the second transmission wheel, and the chain has the protrusion.

[0009] As a further improvement of this utility model, the chain includes multiple links, and each link is provided with at least one protrusion.

[0010] As a further improvement of this utility model, the carrier belt moves along a first direction, and in the first direction, the ratio of the number of protrusions to the number of positioning holes is 1:(3-5).

[0011] As a further improvement of this utility model, the chain link includes a pin, on which a first chain plate, a sleeve, and a second outer chain plate are sequentially sleeved. The protrusion is provided on the sleeve, and the other end of the first chain plate and the second outer chain plate is provided with the lower pin of the next chain link.

[0012] As a further improvement of this utility model, the sleeve includes an inner chain plate, a first roller, a second roller, and a third outer chain plate. The protrusion is disposed on the inner chain plate. The first roller and the second roller are located between the inner chain plate and the third outer chain plate and are respectively located at both ends. The second roller is sleeved on the pin, and the first roller is sleeved on the upper pin of the previous chain link.

[0013] As a further improvement of this utility model, the first transmission wheel and / or the second transmission wheel are sprockets, the sprockets having teeth that mesh with the chain links.

[0014] As a further improvement of this utility model, the carrier belt moves along a first direction, and a plurality of positioning holes are arranged on the carrier belt to form a first array. The first array is a one-dimensional array, and the array arrangement direction of the positioning holes is the same as the first direction.

[0015] As a further improvement of this utility model, it also includes a guide wheel, on which a carrier track is formed, and the carrier belt is located on the carrier track.

[0016] As a further improvement of this utility model, the protrusion is hemispherical.

[0017] The advantages of this utility model compared with the prior art are:

[0018] The carrier belt conveying device disclosed in this utility model includes a first conveyor wheel, a second conveyor wheel, and a positioning component. The positioning component is sleeved on the first conveyor wheel and the second conveyor wheel. The positioning component has multiple protrusions, all of which can engage with the positioning holes to achieve the positioning of the carrier belt. Multi-point positioning of the carrier belt is achieved through multiple protrusions. Compared with the single-point positioning of the prior art, this greatly improves the accuracy and stability of the carrier belt conveying and reduces misalignment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the semiconductor IC chip testing process provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the carrier belt conveyor structure provided in an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of the chain link structure provided for an embodiment of this utility model.

[0023] The labels for the attached figures are as follows:

[0024] 100. Carrier tape; 101. Positioning hole; 102. IC chip;

[0025] 10. Carrier belt conveyor;

[0026] 1. First transmission wheel; 11. First gear tooth;

[0027] 2. Second transmission wheel; 21. Second gear tooth;

[0028] 3. Positioning components; 30. Protrusions;

[0029] 31. Chain;

[0030] 32. Link; 321. Pin; 322. First chain plate; 323. Sleeve; 324. Second outer chain plate;

[0031] 3231, Inner link plate; 3232, First roller; 3233, Second roller; 3234, Third outer link plate. Detailed Implementation

[0032] 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.

[0033] like Figure 1As shown, the current semiconductor IC chip testing process is as follows: The tape-and-reel equipment places the IC chips, which have passed baking and vision system inspection, into a carrier tape. Then, the carrier tape containing the IC chips is covered with a film and heat-sealed. After heat sealing, the vision system inspects the carrier tape (containing the IC chips) for quality. Carrier tapes (containing IC chips) that fail inspection are removed by the tape-and-reel equipment, then re-taped and inspected; qualified carrier tapes (containing IC chips) can be stored. If the vision system malfunctions, the carrier tape needs to be repositioned. If repositioning fails, the completed carrier tape needs to be removed, the taped IC chips removed, and the tape re-taped. This removal and re-taping significantly impacts production efficiency and results in substantial waste of tape materials. Therefore, the precise positioning capability of the carrier tape conveyor directly affects the reliability of the vision inspection system and is a crucial component in ensuring overall inspection accuracy.

[0034] Existing carrier belt conveyor devices achieve carrier belt positioning by setting positioning holes on the carrier belt and using carrier belt positioning protrusions on the conveyor wheel to position these holes. However, existing carrier belt positioning protrusions can only fully align with one carrier belt positioning hole at a time, making the carrier belt prone to misalignment during conveying and causing the vision system to fail after heat sealing.

[0035] The present invention proposes a carrier tape conveying device 10, which can realize multi-point positioning of the carrier tape 100, thereby improving the accuracy and stability of the carrier tape 100 conveying in the packaging process of tape weaving and tape unwinding, reducing misalignment, thereby reducing the error rate of visual inspection in tape weaving and tape unwinding processes, reducing the heat sealing defect rate caused by misalignment of the carrier tape 100, and reducing the impact of failure on the process.

[0036] To achieve the above technical effects, such as Figure 2 and Figure 3 As shown, the carrier belt 100 is provided with positioning holes 101 and an IC chip 102. The carrier belt conveying device 10 includes a first conveying wheel 1, a second conveying wheel 2, and a positioning member 3. The positioning member 3 is sleeved on the first conveying wheel 1 and the second conveying wheel 2. The positioning member 3 has multiple protrusions 30, all of which can engage with the positioning holes 101 to achieve positioning of the carrier belt 100. During use, the two conveying wheels drive the positioning member 3 to move linearly and drive the carrier belt 100 to move. The multiple protrusions 30 on the positioning member 3 engage with the multiple positioning holes 101 on the carrier belt 100 to achieve multi-point positioning of the carrier belt 100.

[0037] It should be noted that the positioning component 3 described above can be selected from various options, such as a belt, chain 31, wedge belt, etc., as long as it meets the requirements of good motion when fitted onto the two drive wheels and has protrusions 30 on its surface to position the carrier belt 100. In another embodiment, the positioning component 3 can be a belt, made of a wear-resistant, corrosion-resistant material with sufficient flexibility and strength, preferably rubber. The surface of the belt is provided with multiple protrusions 30 that match the positioning holes 101 to achieve multi-point positioning of the carrier belt 100 and reduce misalignment. At the same time, it is also necessary to adjust the belt tension to ensure that it does not slip and remains stable during transmission, thereby improving the meshing accuracy and transmission efficiency between the belt and the carrier belt 100.

[0038] In this embodiment, the positioning component 3 is preferably a chain 31, which is sleeved on the first conveyor wheel 1 and the second conveyor wheel 2. The chain 31 has multiple protrusions 30. The chain 31 has a certain degree of flexibility, which can adapt to different conveying paths and angles. Moreover, the length of the chain 31 and the spacing of the protrusions 30 are adjustable, so that it can adapt to different specifications of carrier belts 100. This allows the conveying device to flexibly meet various production needs and improves the versatility and adaptability of the conveying device.

[0039] To facilitate adjustment of the spacing between adjacent protrusions 30, each link 32 of a chain 31 is provided with a protrusion 30. The protrusions 30 are positioned consistently on each link 32, allowing adjustment of the spacing between adjacent links 32 to achieve adaptive adjustment of the protrusion spacing according to the spacing of the positioning holes 101 of the carrier belt 100. Furthermore, since the links 32 are arranged continuously, the protrusions 30 on each link 32 can sequentially engage with the positioning holes 101 of the carrier belt 100, ensuring that the carrier belt 100 remains precisely positioned throughout the entire conveying process.

[0040] The positioning holes 101 on the carrier belt 100 can be arbitrarily set, while the spacing of the protrusions 30 on the chain 31 is determined when the spacing of the chain links 32 is determined. In order for the positioning holes 101 to adapt to various different positioning components 3 and the spacing of the protrusions 30, when the carrier belt 100 moves between the two drive wheels in the first direction, the number of positioning holes 101 is often much greater than the number of protrusions 30. The ratio of the number of protrusions 30 to the number of positioning holes 101 is 1:(3-5), preferably, the ratio of the number of protrusions 30 to the number of positioning holes 101 is 1:4. It is understood that in another embodiment, the positioning component 3 can be selected as a belt, and the spacing of the protrusions 30 on the belt can be adjusted during manufacturing. Preferably, the ratio of the number of protrusions 30 on the belt to the number of positioning holes 101 is set to 1:3.

[0041] The structure of link 32 includes a pin 321, on which a first chain plate 322, a sleeve 323, and a second outer chain plate 324 are sequentially sleeved. A protrusion 30 is disposed on the sleeve 323. The other end of the first chain plate 322 and the second outer chain plate 324 passes through the lower pin 321 of the next link 32. The pin 321 serves as a connector between adjacent links 32 and between the internal structures of the links 32, ensuring a tight connection between links 32 and a firm connection within the internal structures of the links 32. The sleeve 323 and the chain plate structure provide sufficient strength and stability for the links 32. In this embodiment, the protrusion 30 is disposed on the sleeve 323. By utilizing the structural stability of the sleeve 323 during the movement of the chain 31, vibration and shaking during long-term transmission of the chain 31 are avoided, which could cause the protrusion 30 to deviate from its original position and thus lead to misalignment of the carrier belt 100. The sleeve 323 includes an inner chain plate 3231, a first roller 3232, a second roller 3233, and a third outer chain plate 3234. A protrusion 30 is disposed on the inner chain plate 3231. The first roller 3232 and the second roller 3233 are located between the inner chain plate 3231 and the third outer chain plate 3234, respectively at both ends. The second roller 3233 is sleeved on the pin 321, and the first roller 3232 is sleeved on the upper pin 321 of the previous chain link 32. The first roller 3232, sleeved on the upper pin 321 of the previous chain link 32, not only serves a connecting and supporting function but also reduces wear caused by direct contact between the preceding and following chain links 32, ensuring smooth connection between the chain links 32. The second roller 3233 is fitted onto the pin 321 of this chain link 32, also serving a supporting and rolling function, while reducing friction between the inner chain plate 3231 and the pin 321, thus improving the transmission efficiency of the chain 31. As the core component of the sleeve 323, the inner chain plate 3231, with the help of the first roller 3232 and the second roller 3233, maintains a stable position during chain transmission, ensuring the protrusion 30 remains stable during device operation.

[0042] To adapt to chain 31 and achieve precise transmission control, the first transmission wheel 1 and / or the second transmission wheel 2 are selected as sprockets. The sprockets have teeth that mesh with chain links 32. This meshing transmission method ensures precise and stable movement of the chain 31. Compared to friction transmission, meshing transmission avoids slippage and ensures a constant position of the protrusion 30. In actual operation, the first transmission wheel 1 is the driving wheel, and the second transmission wheel 2 is the driven wheel. The tension of the chain 31 can be adjusted by adjusting the second transmission wheel 2. For smooth chain 31 movement, the first transmission wheel is a sprocket with first teeth 11, while the second transmission wheel can be a friction wheel or a timing belt pulley. Preferably, the second transmission wheel is a sprocket with second teeth 21.

[0043] In this embodiment, the carrier belt 100 moves along a first direction, and a plurality of positioning holes 101 on it are arranged to form a one-dimensional array, and the arrangement direction of the one-dimensional array is the same as the movement direction of the carrier belt 100. The positioning holes 101 are arranged along the movement direction of the carrier belt 100, and the protrusions 30 on the chain 31 can engage with the positioning holes 101 in sequence to achieve linear continuous positioning. It can be understood that the plurality of positioning holes 101 on the carrier belt 100 can also be arranged to form a two-dimensional array. The positioning holes 101 of the two-dimensional array make the positioning of the carrier belt 100 more accurate and reduce the offset in the horizontal and vertical directions. At this time, it is necessary to adjust the position distribution of the protrusions 30 on the positioning component 3 accordingly to adapt to the positioning requirements of the two-dimensional array.

[0044] The protrusion 30 can have various shapes, such as cylindrical, conical, polygonal, etc. In this embodiment, the protrusion 30 is hemispherical. The contact point between the hemispherical protrusion 30 and the carrier belt 100 is the top of the protrusion 30, which reduces wear caused by uneven contact.

[0045] In this embodiment, a guide wheel is provided in the conveying direction of the carrier belt 100, and a track for the carrier belt 100 is formed on the guide wheel. The carrier belt 100 is located on the track for the carrier belt 100, ensuring the position of the carrier belt 100 during movement and reducing the offset of the carrier belt 100. A carrier belt 100 pressure wheel is provided on the carrier belt 100. The carrier belt 100 pressure wheel is located above the first conveyor wheel 1 and presses on the carrier belt 100. The height of the carrier belt 100 pressure wheel is adjusted by controlling the elasticity of the spring, so that the fit between the carrier belt 100 and the chain 31 is high. The carrier belt conveying device 10 is also provided with a servo motor. The drive shaft of the servo motor is fixed to the first drive wheel by fixing screws. The servo motor drives the drive shaft to rotate, and the first conveyor wheel 1 connected to the drive shaft starts to rotate. The first conveyor wheel 1 and the second conveyor wheel 2 drive the chain 31 to move. As the positioning protrusions on the chain 31 gradually engage with the positioning holes 101 on the carrier belt 100, the carrier belt 100 is positioned at multiple points, realizing the precise conveying of the carrier belt 100. The first transmission wheel 1, chain 31, second transmission wheel 2, fixing screws, guide wheels, carrier belt 100 pressure roller, etc. are all precision machined and their surfaces are hardened to ensure their fitting accuracy, improve the wear resistance of the components, increase the service life of each component, and at the same time reduce the maintenance cost of the device.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A carrier belt conveying device, wherein the carrier belt is provided with a plurality of positioning holes, characterized in that, The conveying device includes a first conveying wheel, a second conveying wheel, and a positioning component. The positioning component is sleeved on the first conveying wheel and the second conveying wheel. The positioning component has multiple protrusions, all of which can engage with the positioning holes to achieve the positioning of the carrier belt.

2. The carrier tape transport of claim 1, wherein, The positioning component is a chain, which is sleeved on the first transmission wheel and the second transmission wheel, and the chain has the protrusion.

3. The carrier tape transport of claim 2, wherein, The chain includes multiple links, and each link has at least one protrusion.

4. The carrier tape transport of claim 3, wherein, The carrier belt moves along a first direction, and in the first direction, the ratio of the number of protrusions to the number of positioning holes is 1:(3-5).

5. The carrier tape transport of claim 3, wherein, The chain link includes a pin, on which a first chain plate, a sleeve, and a second outer chain plate are sequentially sleeved. The protrusion is provided on the sleeve, and the other end of the first chain plate and the second outer chain plate is through which the lower pin of the next chain link passes.

6. The carrier tape transport of claim 5, wherein, The sleeve includes an inner chain plate, a first roller, a second roller, and a third outer chain plate. The protrusion is disposed on the inner chain plate. The first roller and the second roller are located between the inner chain plate and the third outer chain plate and are respectively located at both ends. The second roller is sleeved on the pin, and the first roller is sleeved on the upper pin of the previous chain link.

7. The carrier tape transport of claim 3, wherein, The first transmission wheel and / or the second transmission wheel are sprockets, and the sprockets have teeth that mesh with the chain links.

8. The carrier tape transport of claim 1, wherein, The carrier tape moves along a first direction, and a plurality of positioning holes are arranged on the carrier tape to form a first array. The first array is a one-dimensional array, and the array arrangement direction of the positioning holes is the same as the first direction.

9. The carrier tape transport of claim 1, wherein, It also includes a guide wheel on which a carrier track is formed, and the carrier track is located on the carrier track.

10. The carrier tape transport of claim 1, wherein, The protrusion is hemispherical.

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