Automatic degumming device for integrated circuit board processing

Abstract

The invention relates to the technical field of automatic degumming devices, in particular to an automatic degumming device for integrated circuit board processing, which comprises a base body, a mounting cavity is formed in the base body, a driving motor is fixedly mounted at the top end of the base body, and the output end of the driving motor extends into the mounting cavity. A cam is fixedly installed at the output end of the driving motor, and a plurality of bristles are arranged at the bottom end of the base body. A liquid conveying device is arranged on the base body, the liquid conveying device is used for intermittently outputting a glue removing agent to the bristles, the liquid conveying device comprises a containing cavity formed in the base body, a plurality of liquid holes I are uniformly formed in the bottom end of the containing cavity in an array mode, and the liquid holes I are communicated with the exterior of the bottom end of the base body; a limiting table is fixedly installed on the outer side wall face of the lower end of the base body, and the base body is sleeved with a limiting ring. The invention aims to reduce the risk of additional damage to the circuit board in the manual maintenance process in a small-size and low-cost automatic photoresist removing mode.

Description

Technical Field

[0001] This invention relates to the field of automatic adhesive removal equipment, specifically an automatic adhesive removal equipment for integrated circuit board processing. Background Technology

[0002] Integrated circuit boards are a common type of integrated product in the electronics industry and are widely used in various electronic products. To protect the circuit boards from moisture, corrosion, and other harmful substances, a conformal coating (also known as a three-proof varnish) is typically applied to the surface of the integrated circuit board.

[0003] During the repair of integrated circuit boards, technicians first apply a remover to the conformal coating to soften it, and then use hard tools to scrape the coating off the circuit board. However, this scraping operation with hard tools can easily cause excessive pressure on the circuit board, potentially resulting in additional damage. While there are existing automated adhesive removal devices, such as those with patent number CN111229665B entitled "An Integrated Circuit Board Fixing Adhesive Removal Device and Method of Use," these devices are large and expensive, making them unsuitable for small-batch repair work.

[0004] To address this, an automated adhesive removal device for integrated circuit board processing is proposed, which reduces the risk of additional damage to circuit boards during repair by using a small-volume, low-cost automated adhesive removal method. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic adhesive removal device for integrated circuit board processing, which reduces the risk of additional damage to circuit boards during manual repair by using a small-volume, low-cost automated adhesive removal method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic adhesive removal device for integrated circuit board processing includes a substrate with an installation cavity inside. A drive motor is fixedly installed at the top of the substrate, and the output end of the drive motor extends into the installation cavity. A cam is fixedly installed on the output end of the drive motor. Multiple brush bristles are provided at the bottom of the substrate. An infusion device is provided on the substrate for intermittently dispensing adhesive remover to the brush bristles.

[0008] Based on this setup, when using this invention, the operator first needs to hold the drive motor, then press the brush bristles downwards onto the surface of the integrated circuit board where the conformal coating needs to be removed, and then start the drive motor. The drive motor then drives the cam to rotate. As the cam rotates, it performs circular motion, generating centrifugal force. The direction of this centrifugal force changes continuously with the rotation of the cam, causing the entire substrate to vibrate. At this time, the brush bristles pressed against the integrated circuit board repeatedly brush the conformal coating at a high frequency.

[0009] Simultaneously, the infusion device intermittently leaks small amounts of its stored adhesive remover onto the circuit board surface containing the conformal coating, softening it, due to the vibration of the substrate. Once the surface conformal coating is softened, the brush bristles immediately peel it off, exposing the unsoftened coating underneath, allowing it to react rapidly with the adhesive remover without waiting for diffusion. Therefore, the conformal coating can be automatically removed layer by layer quickly.

[0010] The brush bristles are made of a material with a lower hardness than the components on the circuit board, such as plastic bristles. Therefore, the bristles can remove conformal adhesive without damaging the circuit board, reducing the risk of additional damage during manual adhesive removal. Furthermore, the invention has a simple structure, and all components, including the drive motor, have existing miniaturization solutions. For example, the drive motor can be a micro-motor, and the cam and base can be easily sized to achieve the required volume. Therefore, this invention can easily achieve equipment miniaturization, reduce equipment size, and lower production costs, making it widely applicable to various scenarios requiring adhesive removal.

[0011] Preferably, the infusion device includes a receiving cavity formed within a substrate, with a plurality of liquid holes (I) evenly arranged in an array at the bottom end of the receiving cavity, the liquid holes (I) communicating with the outside of the bottom end of the substrate; a limiting platform is fixedly installed on the outer wall of the lower end of the substrate, a limiting ring is fitted on the substrate, the bottom end of the limiting ring abuts against the limiting platform, and the limiting ring and the substrate are fitted with a clearance fit; a connecting ring is fixedly installed at the bottom end of the limiting ring, and the connecting ring is fitted on the substrate, a floating plate is fixedly installed at the bottom end of the connecting ring, and a plurality of liquid holes (II) are evenly arranged in an array on the floating plate; the plurality of liquid holes (II) are staggered with the plurality of liquid holes (I).

[0012] With this setup, the adhesive remover can be pre-stored in the receiving cavity. When the drive motor is turned off, liquid holes one and two are staggered, meaning they are not aligned. As a result, the adhesive remover in the receiving cavity is blocked when it tries to leak out towards the bristles, thus preventing it from leaking out of the receiving cavity.

[0013] When the drive motor starts, the vibration of the substrate is transmitted to the floating plate through its collision with the connecting ring. However, since the substrate is the driving component and the floating plate is the driven component, there is a sequential order between the vibrations of the substrate and the floating plate. This means that the substrate and the floating plate will frequently and repeatedly undergo relative translational motion. Therefore, when the substrate and the floating plate undergo relative displacement, liquid holes one and two will intermittently align and misalign. When liquid hole one aligns with liquid hole two, the adhesive remover in the receiving cavity can leak from the bottom of the floating plate onto the circuit board after passing through liquid holes one and two in sequence, thus contacting the conformal coating on the circuit board to soften it. The softened conformal coating is then brushed away and peeled off by the brush bristles.

[0014] In this way, when the invention is not activated, leakage of the adhesive remover in the receiving cavity can be prevented. After activation, the vibration caused by the rotation of the cam allows the adhesive remover to leak out of the receiving cavity in small amounts multiple times. Thus, each time the adhesive remover is leaked out, it has enough time to be applied to the conformal adhesive by the movement of the brush bristles, which helps to save the amount of adhesive remover used.

[0015] Preferably, a piston is movably mounted on one end of the liquid hole one that connects to the receiving cavity. The bottom end face of the piston is a conical surface. A push-pull rod is fixedly mounted on the bottom end of the piston. The other end of the push-pull rod is disposed on the hole wall of the liquid hole two.

[0016] With this design, when liquid hole one and liquid hole two are misaligned, the push-pull rod on the wall of liquid hole two will pull the piston, causing the bottom conical surface of the piston to block the upper opening of liquid hole one, thus preventing the adhesive remover in the receiving tank from leaking out. During the relative translational movement of the substrate and the floating plate, when liquid hole one and liquid hole two are aligned, the push-pull rod can push the piston into the receiving cavity. At this time, the conical surface of the piston no longer blocks liquid hole one, allowing the adhesive remover to leak outwards.

[0017] During the above process, when the piston is pushed out and then pulled back to the top of the liquid hole one by the push rod due to the vibration of the substrate, the piston will squeeze a part of the adhesive remover in the receiving cavity into the liquid hole one during the movement. This avoids the problem that the adhesive remover cannot leak out smoothly due to its own viscosity, and ensures that the adhesive remover can leak out smoothly onto the conformal adhesive, which is beneficial to ensuring the removal effect of the conformal adhesive of the present invention.

[0018] It is worth adding that, based on these, a flared end can be provided at the end where the liquid hole connects to the receiving cavity. This flared end is used to abut against the conical surface of the piston bottom. Furthermore, when the conical surface of the piston bottom abuts against the flared end, the piston top surface is flush with the bottom wall of the receiving cavity.

[0019] With this configuration, when the piston is pulled by the push rod to block the liquid hole one, the hydraulic pressure of the adhesive remover in the receiving cavity will only act on the top of the piston, allowing the piston to block the liquid hole one more tightly with the help of the hydraulic pressure. This further ensures that the adhesive remover in the receiving cavity will not leak unnecessarily, thereby improving the effective utilization rate of the adhesive remover in this invention and helping to avoid leakage of the adhesive remover when the invention is not activated.

[0020] Preferably, an elastic buffer ring is fixedly installed on the inner wall of the limiting ring, and a serrated portion is provided on the inner wall of the buffer ring, with the tip of the serrated portion abutting against the outer wall of the base.

[0021] With this configuration, as the substrate transmits vibration to the floating plate, it simultaneously compresses against the serrated portion of the buffer ring, causing the serrated portion to deform. This deformation allows the serrated portion to accumulate elastic potential energy, thus pushing the substrate back to its original position relative to the floating plate when the invention stops. Therefore, after the invention stops, the substrate, under the elastic force of the serrated portion, returns to its original position relative to the floating plate. This allows liquid holes one and two to return to their staggered arrangement after stopping, preventing them from aligning. Consequently, the adhesive remover in the receiving cavity is blocked when attempting to leak towards the brush bristles, ensuring no leakage. Furthermore, for a piston and push-pull rod design, this configuration ensures that the push-pull rod exerts a pulling force on the piston after the invention stops, ensuring the piston blocks liquid hole one and improving sealing.

[0022] Preferably, a connecting part is fixedly installed on the inner wall of the second liquid hole. The connecting part is cross-shaped, and all four ends of the cross shape are fixedly installed on the inner wall of the second liquid hole. The push-pull rod is fixedly connected to the center of the cross shape of the connecting part.

[0023] This design allows the push-pull rod to maintain a stable, vertical posture when liquid orifice one and liquid orifice two are aligned, pushing the piston into the receiving cavity. In this position, the push-pull rod can be considered a two-force rod, meaning the force acting on it is necessarily along its axis, preventing unnecessary bending. Therefore, when the push-pull rod pushes the piston into the receiving cavity with liquid orifice one and liquid orifice two aligned, its own bending will not affect the pushing effect, ensuring a stable discharge of the adhesive remover and thus contributing to the reliability of the invention.

[0024] Preferably, the push-pull rod includes a rigid part and two flexible parts, the two flexible parts are fixedly installed at both ends of the rigid part, and the two flexible parts are respectively fixedly connected to the piston and the connecting part.

[0025] By incorporating both rigid and flexible sections, on the one hand, the high structural strength of the rigid section ensures that the push-pull rod does not bend when pushing the piston. Therefore, when the push-pull rod pushes the piston into the receiving cavity with the liquid holes aligned, its own bending will not affect the pushing effect, thus ensuring the effective pushing and guaranteeing the stable discharge of the adhesive remover, which is beneficial to ensuring the reliability of the invention. On the other hand, the flexibility and deformability of the flexible section can be utilized by placing it at both ends of the push-pull rod for connection with other components. Thus, when the floating plate and the base move out of alignment, the connection point between the push-pull rod and its connected components can better resist fatigue damage, thereby extending the service life of the push-pull rod.

[0026] Preferably, the four ends of the cross-shaped connecting part are all fixedly installed on the end that communicates with the receiving cavity of the liquid hole two, and the central part of the connecting part arches into the liquid hole two.

[0027] This design allows the connecting part to have an overall arched shape, resulting in a superior mechanical structure. It can repeatedly withstand the liquid pressure of the adhesive remover within the receiving cavity without easily deforming, thus extending the service life of the invention and ensuring that the push-pull rod can effectively push the piston towards the receiving cavity, improving the reliability of the invention. Furthermore, the arching of the connecting part into the second liquid hole avoids occupying space in the gap between the substrate and the floating plate, allowing for a smaller gap in the design and reducing the risk of adhesive remover seeping out from this gap.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. In use, this invention utilizes the vibration generated by the rotation of the cam to induce overall vibration of the substrate. This vibration causes the brush bristles to repeatedly brush against the conformal coating on the circuit board, while simultaneously causing the infusion device to leak adhesive remover onto the conformal coating to soften it. The softened conformal coating is then brushed away and peeled off layer by layer by the vibrating brush bristles, thus automatically removing the conformal coating from the circuit board. Furthermore, the hardness of the brush bristles is less than the hardness of the components on the circuit board, preventing damage to the circuit board and reducing the risk of additional damage during manual adhesive removal. Simultaneously, the invention has a simple structure, thus reducing equipment size and production costs.

[0030] 2. By setting up a piston and push-pull rod, when liquid hole one and liquid hole two are not aligned, the push-pull rod pulls the piston, causing the piston to block liquid hole one, thus ensuring that the adhesive remover in the receiving tank does not leak out. When liquid hole one and liquid hole two are aligned, the push-pull rod pushes the piston into the receiving cavity. At this time, the piston does not block liquid hole one, so the adhesive remover can leak out onto the circuit board. When the piston re-blocks liquid hole one from the pushed-out state, the piston will squeeze a portion of the adhesive remover in the receiving cavity into liquid hole one during its movement, thereby ensuring that the adhesive remover can smoothly leak onto the conformal adhesive, which is beneficial to ensuring the removal effect of the conformal adhesive of this invention.

[0031] 3. By setting up rigid and flexible parts, on the one hand, the high structural strength of the rigid part can ensure the effective ejection of the piston by the push-pull rod, thus ensuring the stable discharge of the adhesive remover and contributing to the reliability of the invention; on the other hand, the softness and deformability of the flexible part can be used to set at both ends of the push-pull rod for connection with other components. Thus, when the floating plate and the base move out of alignment, the connection point between the push-pull rod and its connected components can better resist fatigue damage, thereby extending the service life of the push-pull rod. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0034] Figure 3 This is a schematic diagram of the front view section of the structure of the present invention;

[0035] Figure 4 for Figure 1 A magnified view of part A in the middle;

[0036] Figure 5 for Figure 2 A magnified view of part B in the middle section;

[0037] Figure 6 for Figure 3 A magnified view of part C in the middle;

[0038] Figure 7 for Figure 6 A magnified view of part D in the middle;

[0039] Figure 8 for Figure 6 A schematic diagram showing the state of the piston when it is pushed up by the push rod after the liquid hole one and liquid hole two are aligned;

[0040] Figure 9This is a schematic diagram of the connecting part.

[0041] In the diagram: 1. Base; 2. Limiting ring; 3. Connecting ring; 4. Floating plate; 5. Brush bristles; 6. Drive motor; 11. Receiving cavity; 12. Mounting cavity; 13. Cam; 14. Liquid hole one; 15. Piston; 16. Limiting platform; 21. Buffer ring; 22. Serrated part; 41. Liquid hole two; 141. Trumpet mouth part; 151. Push-pull rod; 152. Conical surface; 153. Flexible part; 154. Rigid part; 411. Connecting part. Detailed Implementation

[0042] The following description, with the aid of the accompanying drawings listed in the foregoing "Description of Drawings", will clearly illustrate the specific embodiments of the present invention, in order to enable readers to have a more complete and objective understanding of the working principle and corresponding technical effects of the present invention.

[0043] like Figures 1 to 9 The image shows a specific embodiment of the present invention.

[0044] When the present invention is installed, firstly, the base 1 is taken out, and an installation cavity 12 is opened in the base 1. A drive motor 6 is fixedly installed at the top of the base 1, and the output end of the drive motor 6 extends into the installation cavity 12. A cam 13 is fixedly installed on the output end of the drive motor 6. Multiple brush bristles 5 are provided at the bottom of the base 1. An infusion device is provided on the base 1, which is used to intermittently output adhesive remover to the brush bristles 5.

[0045] The infusion device includes a receiving cavity 11 formed within a base 1. Multiple liquid holes 14 are evenly arrayed at the bottom of the receiving cavity 11, and these liquid holes 14 communicate with the outside of the bottom of the base 1. A limiting platform 16 is fixedly installed on the outer wall of the lower end of the base 1. A limiting ring 2 is fitted onto the base 1, with its bottom end abutting against the limiting platform 16. The limiting ring 2 and the base 1 are fitted with a clearance fit. A connecting ring 3 is fixedly installed at the bottom of the limiting ring 2, and the connecting ring 3 is fitted onto the base 1. A floating plate 4 is fixedly installed at the bottom of the connecting ring 3, and multiple liquid holes 41 are evenly arrayed on the floating plate 4. The multiple liquid holes 41 are staggered with the multiple liquid holes 14.

[0046] Additionally, a piston 15 is movably mounted on the end of liquid hole 14 that connects to the receiving cavity 11. The bottom end face of the piston 15 is a conical surface 152, and a push-pull rod 151 is fixedly mounted on the bottom end of the piston 15. The other end of the push-pull rod 151 is set on the wall of liquid hole 41. A flared mouth 141 is provided at the end of liquid hole 14 that connects to the receiving cavity 11. The flared mouth 141 is used to abut against the conical surface 152 at the bottom end of the piston 15. When the conical surface 152 at the bottom end of the piston 15 abuts against the flared mouth 141, the top surface of the piston 15 is flush with the bottom wall of the receiving cavity 11. An elastic buffer ring 21 is fixedly mounted on the inner wall of the limiting ring 2. A serrated portion 22 is provided on the inner wall of the buffer ring 21, and the tips of the serrated portions 22 abut against the outer wall of the base 1. A connecting part 411 is fixedly installed on the inner wall of the second liquid hole 41. The connecting part 411 is cross-shaped, and all four ends of the cross shape are fixedly installed on the inner wall of the second liquid hole 41. The push-pull rod 151 is fixedly connected to the center of the cross shape of the connecting part 411. The push-pull rod 151 includes a rigid part 154 and two flexible parts 153. The two flexible parts 153 are fixedly installed at both ends of the rigid part 154, and the two flexible parts 153 are fixedly connected to the piston 15 and the connecting part 411, respectively. All four ends of the cross shape of the connecting part 411 are fixedly installed on the end of the second liquid hole 41 that communicates with the receiving cavity 11, and the central part of the connecting part 411 arches into the second liquid hole 41.

[0047] When this invention is in operation, the operator first holds the drive motor 6, then presses the brush bristles 5 downwards onto the surface of the integrated circuit board where the conformal coating needs to be removed, and then starts the drive motor 6. At this time, the drive motor 6 drives the cam 13 to rotate. As the cam 13 rotates, it makes a circular motion, generating centrifugal force. The direction of the centrifugal force changes continuously with the rotation of the cam 13, thereby causing the entire substrate 1 to vibrate. At this time, the brush bristles 5 pressed against the integrated circuit board are repeatedly brushed on the conformal coating at a high frequency.

[0048] Simultaneously, the infusion device intermittently leaks small amounts of its stored adhesive remover onto the circuit board surface containing the conformal coating, softening it, due to the vibration of the substrate 1. Once the surface conformal coating is softened, the brush bristles 5 immediately peel it off, exposing the unsoftened coating underneath, allowing it to react rapidly with the adhesive remover without waiting for diffusion. Therefore, the conformal coating can be automatically removed layer by layer quickly.

[0049] The brush bristles 5 are made of a material with a lower hardness than the components on the circuit board, such as plastic bristles 5. Therefore, the brush bristles 5 can remove the conformal adhesive without damaging the circuit board, reducing the risk of additional damage to the circuit board during manual adhesive removal. Furthermore, the invention has a simple structure, and all components, including the drive motor 6, have existing miniaturization solutions. For example, the drive motor 6 can be a micro motor, and the cam 13, base 1, etc., can be easily sized to achieve the required volume. Therefore, the invention can easily achieve equipment miniaturization, reduce equipment size, and lower production costs, thus enabling its widespread application in various scenarios requiring adhesive removal.

[0050] In the infusion device, the adhesive remover is pre-stored in the receiving cavity 11. When the drive motor 6 is off, the first liquid hole 14 and the second liquid hole 41 are staggered, meaning they are not aligned. Therefore, the adhesive remover in the receiving cavity 11 is blocked when it attempts to leak towards the bristles 5, preventing leakage from the receiving cavity 11. When the drive motor 6 starts, the vibration of the base 1 is transmitted to the floating plate 4 through its collision with the connecting ring 3. However, since the base 1 is the driving member and the floating plate 4 is the driven member, there is a sequential order between the vibrations of the base 1 and the floating plate 4. This means that the base 1 and the floating plate 4 will frequently and repeatedly undergo relative translational motion. Therefore, when the base 1 and the floating plate 4 undergo relative displacement, the first liquid hole 14 and the second liquid hole 41 will intermittently align and misalign. When liquid hole 14 aligns with liquid hole 41, the adhesive remover in the receiving cavity 11 can leak out from the bottom of the floating plate 4 onto the circuit board after passing through liquid hole 14 and liquid hole 41 in sequence, thereby contacting the conformal coating on the circuit board to soften it. The softened conformal coating is then brushed away and peeled off by the brush bristles 5. In this way, when the invention is not activated, leakage of the adhesive remover in the receiving cavity 11 can be prevented. When activated, the vibration caused by the rotation of the cam 13 allows the adhesive remover to leak out of the receiving cavity 11 in small amounts multiple times. Thus, each leaked adhesive remover has sufficient time to be applied to the conformal coating by the movement of the brush bristles 5, which helps to save on the amount of adhesive remover used.

[0051] It is worth noting that when liquid hole 14 is not aligned with liquid hole 2 41, the push-pull rod 151 on the wall of liquid hole 2 41 will pull the piston 15, causing the bottom conical surface 152 of the piston 15 to block the upper opening of liquid hole 14, thus ensuring that the adhesive remover in the receiving tank does not leak out. During the relative translational movement of the substrate 1 and the floating plate 4, when liquid hole 14 is aligned with liquid hole 2 41, the push-pull rod 151 can push the piston 15 into the receiving cavity 11. At this time, the conical surface 152 of the piston 15 no longer blocks liquid hole 14, and the adhesive remover can leak outwards.

[0052] When the piston 15 is pushed out, it is pulled back to the top of the liquid hole 14 by the push rod 151 due to the vibration of the substrate 1. During the movement, the piston 15 will squeeze a part of the adhesive remover in the receiving cavity 11 into the liquid hole 14, thereby avoiding the problem that the adhesive remover cannot leak out smoothly due to its own viscosity. This ensures that the adhesive remover can leak out smoothly onto the conformal adhesive, which is beneficial to ensuring the removal effect of the conformal adhesive of the present invention.

[0053] It should be emphasized that, based on the content described above, although the beneficial effects of the present invention have been explained in detail and corresponding specific embodiments have been provided, those skilled in the art can still achieve the same technical effects by making conventional substitutions, modifications, or other alterations to the given technical solutions without creative effort, provided they fully understand the working principle of the present invention. However, such modifications should not be considered as exceeding the scope of the present invention. Specifically, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic glue removal device for integrated circuit board processing, characterized in that, The device includes a base (1), which has an installation cavity (12) inside. A drive motor (6) is fixedly installed at the top of the base (1), and the output end of the drive motor (6) extends into the installation cavity (12). A cam (13) is fixedly installed on the output end of the drive motor (6). Multiple bristles (5) are provided at the bottom of the base (1). An infusion device is provided on the base (1) for intermittently dispensing adhesive to the bristles (5).

2. The automatic glue removal device for integrated circuit board processing according to claim 1, characterized in that, The infusion device includes a receiving cavity (11) opened in the base (1), and a plurality of liquid holes (14) are uniformly arrayed at the bottom end of the receiving cavity (11). The liquid holes (14) are connected to the outside of the bottom end of the base (1). A limiting platform (16) is fixedly installed on the outer wall of the lower end of the base (1). A limiting ring (2) is sleeved on the base (1). The bottom end of the limiting ring (2) abuts against the limiting platform (16). The limiting ring (2) and the base (1) are fitted with a clearance fit. A connecting ring (3) is fixedly installed at the bottom end of the limiting ring (2). The connecting ring (3) is sleeved on the base (1). A floating plate (4) is fixedly installed at the bottom end of the connecting ring (3). A plurality of liquid holes (41) are uniformly arrayed on the floating plate (4). The plurality of liquid holes (41) are staggered with the plurality of liquid holes (14).

3. The automatic glue removal device for integrated circuit board processing according to claim 2, characterized in that, A piston (15) is movably mounted on one end of the liquid hole (14) that is connected to the receiving cavity (11). The bottom end face of the piston (15) is a conical surface (152). A push-pull rod (151) is fixedly mounted on the bottom end of the piston (15). The other end of the push-pull rod (151) is set on the hole wall of the liquid hole (41).

4. An automatic glue removal device for integrated circuit board processing according to claim 3, characterized in that, A flared mouth (141) is provided at one end of the liquid hole (14) that connects to the receiving cavity (11). The flared mouth (141) is used to abut against the conical surface (152) at the bottom end of the piston (15). When the conical surface (152) at the bottom end of the piston (15) abuts against the flared mouth (141), the top surface of the piston (15) is flush with the bottom wall of the receiving cavity (11).

5. An automatic glue removal device for integrated circuit board processing according to claim 2, characterized in that, An elastic buffer ring (21) is fixedly installed on the inner wall of the limiting ring (2). A serrated part (22) is provided on the inner wall of the buffer ring (21), and the tip of the serrated part (22) abuts against the outer wall of the base (1).

6. An automatic glue removal device for integrated circuit board processing according to claim 4, characterized in that, A connecting part (411) is fixedly installed on the inner wall of the second liquid hole (41). The connecting part (411) is cross-shaped, and the four ends of the cross shape are fixedly installed on the inner wall of the second liquid hole (41). The push-pull rod (151) is fixedly connected to the center of the cross shape of the connecting part (411).

7. An automatic glue removal device for integrated circuit board processing according to claim 3, characterized in that, The push-pull rod (151) includes a rigid part (154) and two flexible parts (153). The two flexible parts (153) are fixedly installed at both ends of the rigid part (154) and are respectively fixedly connected to the piston (15) and the connecting part (411).

8. An automatic glue removal device for integrated circuit board processing according to claim 6, characterized in that, The four ends of the cross-shaped connecting part (411) are fixedly installed on the end of the liquid hole two (41) that communicates with the receiving cavity (11), and the central part of the connecting part (411) arches out into the liquid hole two (41).

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