Quick dismounting device for SMT (Surface Mount Technology) red glue printing screen

Abstract

The utility model relates to the technical field of SMT (Surface Mount Technology), in particular to a quick release device for an SMT red glue printing screen. Comprising a frame, a supporting plate and a printing screen plate, an inserting groove is formed in the frame, the supporting plate is installed on the frame through the inserting groove, and the printing screen plate is detachably installed on the supporting plate; a push-out assembly is arranged in the frame, and the supporting plate is pushed out of the inserting groove through the push-out assembly so that the printing screen can be replaced conveniently. The device has the effect of improving the mounting or dismounting and replacing efficiency of the printing screen plate, and has the characteristics of simple structure and convenience in operation.

Description

Technical Field

[0001] This application relates to the field of SMT chip mounting technology, and particularly to a quick-release device for SMT red glue printing stencils. Background Art

[0002] SMT red glue printing technology has been widely used in the field of electronic manufacturing, especially playing an important role in the production process of circuit boards. Traditional SMT red glue printing technology mainly ensures printing accuracy by fixing the printing stencil, which is crucial for improving the production quality and efficiency of circuit boards. With the continuous growth of market demand and the continuous progress of technology, SMT red glue printing technology has also evolved continuously, and various improvement measures have been proposed to improve process efficiency, reduce costs, and enhance printing accuracy.

[0003] Existing SMT red glue printing usually uses the method of adhesively fixing the printing stencil to the frame to ensure the stability of the printing stencil during the printing process. Specifically, first, the printing stencil needs to be accurately installed on the frame, and then through a multi-step adhesive process, various glues are used to fix them together. Although this method can ensure the stability of the printing stencil to a certain extent, there are some obvious deficiencies in practical applications. First, the adhesive process is complex, and each step requires precise operation, otherwise it is easy to cause the printing stencil to shift. Second, the production cycle is long, and multiple processes are required, resulting in low production efficiency. In addition, since the printing stencil is adhesively fixed to the frame, storage and maintenance are relatively inconvenient. More importantly, after long-term use, the adhesive may age and debond due to the erosion of chemical agents during the cleaning process, resulting in the printing stencil being unable to be used normally, so the efficiency of installing or removing the printing stencil is low.

[0004] Therefore, based on the above problems, the existing technology needs to be improved. Content of the Utility Model

[0005] The purpose of this application is to overcome the above technical problems and provide a quick-release device for SMT red glue printing stencils.

[0006] The above technical purpose of this application is achieved through the following technical solutions: A quick-release device for SMT red glue printing stencils, including a frame, a support plate, and a printing stencil. The frame is provided with a slot, the support plate is installed on the frame through the slot, and the printing stencil is detachably installed on the support plate; a pushing component is arranged inside the frame, and the support plate is pushed out of the slot through the pushing component so as to replace the printing stencil.

[0007] By adopting the above technical solution, the slots on the frame facilitate the installation of the support plate, and the printing stencil is detachably installed on the support plate, which is convenient for replacement and maintenance. The pushing component inside the frame can quickly push the support plate out of the slot, greatly improving the replacement efficiency of the printing stencil. The pushing component reduces the operation time and labor intensity, making the production process more convenient and efficient. The reasonable structural design ensures the stability and reliability of the device, and improves the installation or removal efficiency of the SMT red glue printing stencil.

[0008] Optionally, the pushing component includes a driving member arranged inside the frame, a chute is arranged inside the frame, the chute is provided with an opening, and the chute communicates with the slot through the opening; a moving member is arranged in the chute, the moving member can move in the chute, and the moving member is fixed or moved by the driving member; a retaining piece is arranged on the moving member, and when the support plate is inserted into the slot, it abuts against the retaining piece.

[0009] By adopting the above technical solution, the chute inside the frame communicates with the slot through the opening, providing a reasonable spatial layout for the setting of the retaining piece. The moving member can move in the chute, and the driving member is used to fix or move the moving member, ensuring the accuracy and controllability of the pushing action. The retaining piece on the moving member abuts against the support plate when the support plate is inserted into the slot, playing a good transmission role. The overall design of the pushing component makes the process of pushing the support plate smoother and more efficient, which not only facilitates the replacement operation of the printing stencil, but also reduces the operation time and labor intensity. At the same time, its reasonable structural layout also enhances the stability and reliability of the device.

[0010] Optionally, the driving member includes a lock and a tension spring arranged inside the frame, the moving member includes a fixing rod and a hook arranged in the chute, one end of the fixing rod is connected with a tension spring, the end of the tension spring far away from the fixing rod is fixed on the frame, and the hook is arranged at the end of the fixing rod far away from the tension spring; when the support plate drives the retaining piece to slide towards the lock, the lock cooperates to lock the hook; when the lock cooperates to release the hook, the tension spring drives the retaining piece to slide away from the lock.

[0011] By adopting the above technical solution, when the support plate drives the retaining piece to slide towards the lock, the lock can cooperate to lock the hook, ensuring the stability of the device during use. When it is necessary to replace the printing stencil, by releasing the hook through the cooperation of the lock, the tension spring will drive the retaining piece to slide away from the lock, and the retaining piece will quickly push the support plate out of the slot. The cooperation between the lock and the hook and the setting of the tension spring make the operation of the device more convenient and efficient, reducing the time and labor intensity for replacing the printing stencil. It ensures the stability and reliability of the device in different states, improves the smoothness and safety of the entire production process, and improves the installation or removal efficiency of the SMT red glue printing stencil.

[0012] Optionally, it further includes a locking component. The locking component includes a cylinder provided on the frame. A push rod is provided on the cylinder, and a push block is provided on the push rod. A groove is provided on the support plate, and a locking tongue is provided in the groove. Driven by the cylinder, the locking tongue slides in the groove in the direction close to the printing stencil.

[0013] By adopting the above technical solution, driven by the cylinder, the locking tongue can slide in the groove in the direction close to or away from the printing stencil, so as to realize the locking and unlocking of the printing stencil. The printing stencil can be firmly fixed on the support plate after installation, ensuring the stability and accuracy during the printing process. When the printing stencil needs to be replaced, the locking tongue can be quickly unlocked through the operation of the cylinder, facilitating the replacement operation. The locking component not only improves the reliability and safety of the device, but also further improves the efficiency of replacing the printing stencil, reduces the operation time and labor intensity, and brings convenience to the SMT red glue printing production.

[0014] Optionally, an installation groove is concavely provided on one side surface of the locking tongue close to the printing stencil. An elastic member is passed through the installation groove. One end of the elastic member abuts against the bottom of the installation groove, and the other end abuts against one side wall of the installation groove close to the printing stencil.

[0015] By adopting the above technical solution, the setting of the elastic member provides a buffering effect for the locking tongue. When the locking tongue locks the printing stencil, the elastic member can avoid damage to the printing stencil caused by rigid contact, protecting the integrity of the printing stencil. Secondly, the elastic force of the elastic member makes the locking of the locking tongue more firm and reliable, and can effectively prevent the loosening of the printing stencil during the printing process, ensuring the stability of the printing quality. At the same time, during the unlocking process, the elastic member also helps the locking tongue to return smoothly, improving the operation convenience of the device.

[0016] Optionally, a limiting plate is provided on the support plate. The limiting plate and the groove cooperate to form a fitting groove for the locking tongue to be fitted and installed.

[0017] By adopting the above technical solution, the fitting groove provides a stable installation position for the locking tongue, ensuring that the locking tongue will not shift or shake during the working process, thus ensuring the accuracy and reliability of locking the printing stencil. The presence of the limiting plate limits the movement range of the locking tongue, enabling it to move within a specific track, improving the overall stability of the device. At the same time, it also makes the installation and disassembly of the locking tongue more convenient and fast, facilitating maintenance and replacement.

[0018] Optionally, a first step is provided at one end of the locking tongue close to the printing stencil, and a chamfer is provided on the first step.

[0019] By adopting the above technical solutions, the setting of the first step provides a clear positioning point for the contact between the locking tongue and the printing stencil, making the locking of the printing stencil by the locking tongue more accurate and stable. The existence of the chamfer plays a guiding role during the contact between the locking tongue and the printing stencil, enabling the locking tongue to slide into the locking position more smoothly, improving the convenience of operation. In addition, the chamfer can also reduce the friction between the locking tongue and the printing stencil, reduce wear, and extend the service life of the device.

[0020] Optionally, a second step is provided on the printing stencil, and a through hole is provided on the support plate. The printing stencil is fitted and installed on the support plate by fitting the second step into the through hole.

[0021] By adopting the above technical solutions, this fitting and installation method makes the installation of the printing stencil on the support plate more stable, not prone to shaking or displacement during the printing process, ensuring the stability and accuracy of the printing quality. On the other hand, through the specific fitting structure of the step and the through hole, the installation and disassembly processes are more simple and rapid, improving the efficiency of replacing the printing stencil, reducing the operation time and labor intensity.

[0022] In summary, the present application has at least the following beneficial effects:

[0023] 1. The printing stencil is fixed to the support plate and the frame by mechanical fixing, simplifying the production and processing process, eliminating the need for complex adhesive processes, reducing production costs, and being environmentally friendly.

[0024] 2. The printing stencil can be quickly disassembled and replaced through the support plate, reducing the impact on the service life of the stencil during cleaning, and extending the service cycle of the printing stencil.

[0025] 3. The support plate is reinforced by the locking tongue, effectively preventing the support plate from shaking during printing and improving printing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an SMT red glue printing stencil quick-release device;

[0027] Figure 2 is a cross-sectional view of an SMT red glue printing stencil quick-release device;

[0028] Figure 3 is a schematic structural diagram of the chute;

[0029] Figure 4 is a schematic structural diagram of the pushing component;

[0030] Figure 5 is a cross-sectional view of the locking component;

[0031] Figure 6 It is a schematic structural diagram of the support plate;

[0032] Figure 7 It is a schematic structural diagram of the lock tongue;

[0033] Figure 8 It is a schematic structural diagram of the printing stencil.

[0034] Reference numerals

[0035] 1. Frame; 2. Support plate; 3. Printing stencil; 4. Slot; 5. Pushing component; 51. Driving part; 511. Lock; 512. Tension spring; 52. Moving part; 521. Fixed rod; 522. Hook; 53. Flap; 6. Locking component; 61. Cylinder; 62. Push rod; 63. Push block; 64. Lock tongue; 65. Elastic part; 66. Limiting plate; 7. Chute; 8. Opening; 9. Groove; 10. Installation groove; 11. Fitting groove; 12. First step; 13. Chamfer; 14. Second step; 15. Through hole. Detailed implementation manners

[0036] The following further describes the present application in detail with reference to the accompanying drawings.

[0037] In this embodiment, referring to Figure 1-8 , a quick-disassembly device for an SMT red glue printing stencil includes a frame 1 and a support plate 2, and a printing stencil 3 detachably installed on the support plate 2. A slot 4 is provided on the frame 1, and the support plate 2 is installed on the frame 1 through the slot 4, solving the problem in the prior art that the gluing method is complex and not easy to replace. Specifically, the frame 1 includes four side edges, and slots 4 are provided on two opposite side edges. The slots 4 play a role in guiding and fixing the support plate 2, ensuring that the support plate 2 is accurately and firmly positioned when inserted into the frame 1. The design of the slots 4 enables the support plate 2 to slide and be positioned within the frame 1, and is also convenient for later adjustment and disassembly. A pushing component 5 is provided inside the frame 1. When the support plate 2 is completely installed in the slot 4 and the printing stencil 3 needs to be replaced, the support plate 2 is quickly pushed out of the slot 4 through the pushing component 5 to facilitate the replacement of the printing stencil 3.

[0038] In this embodiment, referring to Figure 2-4 , the pushing component 5 includes a driving part 51 provided inside the frame 1. A chute 7 is provided inside the frame 1, and the chute 7 is provided with an opening 8. The chute 7 communicates with the slot 4 through the opening 8. A moving part 52 is provided inside the chute 7, and the moving part 52 can move inside the chute 7. The moving part 52 is fixed or moved by the driving part 51. A flap 53 is provided on the moving part 52. When the support plate 2 is inserted into the slot 4, the flap 53 abuts against the support plate 2. The design of the flap 53 enables the support plate 2 to drive the moving key to slide inside the chute 7 during the process of inserting the support plate 2 into the frame 1, and at the same time provides a thrust for the support plate 2 when pushing out the support plate 2.

[0039] Specifically, the driving member 51 includes a latch 511 and a tension spring 512 disposed within the frame 1, and the moving member 52 includes a fixed rod 521 and a hook 522 disposed within the sliding groove 7. One end of the fixed rod 521 is connected to the tension spring 512, and the end of the tension spring 512 remote from the fixed rod 521 is fixed to the frame 1. The hook 522 is disposed at the end of the fixed rod 521 remote from the tension spring 512. By driving the support plate 2 to slide the shutter 53 towards the latch 511, the latch 511 cooperates to lock the hook 522; by the cooperation of the latch 511 to release the hook 522, the tension spring 512 drives the shutter 53 to slide away from the latch 511. This design realizes the rapid conversion between locking and unlocking, and simplifies the fixing and disassembling steps of the support plate 2.

[0040] Specifically, the latch 511 includes a lock head capable of resetting and a control mechanism for controlling the clamping or releasing of the lock head. When the support plate 2 is completed with plug-in installation, the shutter 53 drives the fixed rod 521 to slide within the sliding groove 7, and at this time the tension spring 512 is in a stretched state. When the hook 522 abuts against the lock head of the latch 511, the lock head gives way and locks the hook 522 when the hook 522 reaches a preset position. When it is necessary to replace the printing stencil and push out the support plate 2, the support plate 2 is further pushed towards the latch 511, and this action is transmitted to the hook 522 on the fixed rod 521. The hook 522 generates a specific acting force on the latch 511 to trigger the control mechanism of the latch 511, causing the lock head of the latch 511 to open. At this time, the tension spring 512 retracts rapidly to pull the hook 522 back and disengage from the latch 511. When the hook 522 disengages, the latch 511 loses the supporting force of the hook 522, and under the action of its own structure, such as the possible elastic restoring force or the reset mechanism, the bayonet closes again and returns to the initial state, waiting for the next locking operation.

[0041] In this embodiment, referring to Figure 5-7 , an SMT red glue printing stencil quick-release device further includes a locking assembly 6. The locking assembly 6 includes a cylinder 61 disposed on the frame 1. Preferably, the cylinder 61 is disposed within the frame 1. A push rod 62 is provided on the cylinder 61, and a push block 63 is provided on the push rod 62. A groove 9 is provided on the support plate 2, and a lock tongue 64 is provided within the groove 9. Driven by the cylinder 61, the lock tongue 64 slides within the groove 9 towards or away from the printing stencil 3. When the lock tongue 64 extends, it presses against the support plate 2 to prevent the support plate 2 from shaking, ensuring the stability of the support plate 2 during the working process.

[0042] On one side of the locking tongue 64 close to the printing stencil 3, an installation groove 10 is concavely provided. An elastic member 65 is inserted through the installation groove 10. Preferably, the elastic member 65 is a spring. One end of the elastic member 65 abuts against the bottom of the installation groove 10, and the other end abuts against one side wall of the installation groove 10 close to the printing stencil 3. After the air cylinder 61 cuts off the air supply, the air cylinder 61 drives the push rod 62 to retract, and the elastic member 65 releases and pushes back the locking tongue 64. At this time, the printing stencil 3 can be disassembled from the support plate 2. The setting of the elastic member 65 provides a buffering effect for the locking tongue 64. When the locking tongue 64 locks the printing stencil 3, the elastic member 65 can prevent damage to the printing stencil 3 caused by rigid contact, protecting the integrity of the printing stencil 3. Secondly, the elastic force of the elastic member 65 makes the locking of the locking tongue 64 more firm and reliable, and can effectively prevent the loosening of the printing stencil 3 during the printing process, ensuring the stability of the printing quality. At the same time, during the unlocking process, the elastic member 65 also helps the locking tongue 64 to return smoothly, improving the operation convenience of the device.

[0043] A limiting plate 66 is provided on the support plate 2. The limiting plate 66 and the groove 9 cooperate to form a fitting groove 11 for the locking tongue 64 to be fitted and installed. The fitting groove 11 provides a stable installation position for the locking tongue 64, ensuring that the locking tongue 64 will not shift or shake during the working process, thereby guaranteeing the accuracy and reliability of locking the printing stencil 3. The presence of the limiting plate 66 limits the movement range of the locking tongue 64, enabling it to move within a specific track, improving the overall stability of the device. At the same time, it also makes the installation and disassembly of the locking tongue 64 more convenient and fast, facilitating maintenance and replacement.

[0044] One end of the locking tongue 64 close to the printing stencil 3 is provided with a first step 12, and a chamfer 13 is provided on the first step 12. The setting of the first step 12 provides a clear positioning point for the contact between the locking tongue 64 and the printing stencil 3, making the locking tongue 64 more accurate and stable when locking the printing stencil 3. The presence of the chamfer 13 plays a guiding role during the contact between the locking tongue 64 and the printing stencil 3, enabling the locking tongue 64 to slide into the locking position more smoothly, improving the operation convenience. In addition, the chamfer 13 can also reduce the friction between the locking tongue 64 and the printing stencil 3, reduce wear, and extend the service life of the device.

[0045] In this embodiment, referring to Figure 6 and Figure 8 , the middle part of the printing stencil 3 is the printing part, and second steps 14 are provided around it. Through holes 15 are provided on the support plate 2. The size of the through holes 15 is the same as the size of the printing part. The printing part is just placed in the through holes 15, and the table surface of the second steps 14 is placed on the support plate 2. The step height is the same as the thickness of the hole wall of the through holes 15, so that the surface of the printing part is flush with the bottom surface of the support plate 2. This design ensures the flatness and stability of the printing stencil 3 during the printing process, improving the printing quality.

[0046] The implementation principle of this embodiment is as follows: Through the cooperation of the pushing component 5 and the locking device within the frame 1, the rapid disassembly and assembly of the printing stencil 3 are achieved, simplifying the production and maintenance processes, ensuring the stability and reliability of the entire device during operation, improving production efficiency, and reducing production costs.

[0047] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A quick-release device for SMT red glue printing stencils, characterized in that, It includes a frame (1), a support plate (2) and a printing screen plate (3). A slot (4) is provided on the frame (1), the support plate (2) is installed on the frame (1) through the slot (4), and the printing screen plate (3) is detachably installed on the support plate (2); a pushing component (5) is provided inside the frame (1), and the support plate (2) is pushed out of the slot (4) through the pushing component (5) so as to replace the printing screen plate (3).

2. The SMT red glue printing stencil quick-release device according to claim 1, wherein, The pushing component (5) includes a driving part (51) provided inside the frame (1). A sliding slot (7) is provided inside the frame (1), and the sliding slot (7) is provided with an opening (8). The sliding slot (7) communicates with the slot (4) through the opening (8); a moving part (52) is provided inside the sliding slot (7), the moving part (52) can move inside the sliding slot (7), and the moving part (52) is fixed or moved through the driving part (51); a blocking piece (53) is provided on the moving part (52), and when the support plate (2) is inserted into the slot (4), it abuts against the blocking piece (53).

3. The SMT red glue printing stencil quick-release device according to claim 2, characterized in that, The driving part (51) includes a lock catch (511) and a tension spring (512) provided inside the frame (1). The moving part (52) includes a fixing rod (521) and a hook (522) provided inside the sliding slot (7). One end of the fixing rod (521) is connected with a tension spring (512), and the end of the tension spring (512) away from the fixing rod (521) is fixed on the frame (1). The hook (522) is provided at the end of the fixing rod (521) away from the tension spring (512); the support plate (2) drives the blocking piece (53) to slide towards the direction close to the lock catch (511), and the lock catch (511) cooperates to lock the hook (522); by the lock catch (511) cooperating to release the hook (522), the tension spring (512) drives the blocking piece (53) to slide away from the lock catch (511).

4. A quick-release device for an SMT red glue printing stencil according to claim 1, characterized in that, It further includes a locking component (6). The locking component (6) includes a cylinder (61) provided on the frame (1), a push rod (62) is provided on the cylinder (61), and a push block (63) is provided on the push rod (62); a groove (9) is provided on the support plate (2), and a locking tongue (64) is provided inside the groove (9). Driven by the cylinder (61), the locking tongue (64) slides inside the groove (9) towards the direction close to the printing screen plate (3).

5. The quick-release device for SMT red glue printing stencil according to claim 4, characterized in that, An installation groove (10) is concavely provided on one side surface of the locking tongue (64) close to the printing screen plate (3). An elastic part (65) is penetrated inside the installation groove (10). One end of the elastic part (65) abuts against the bottom of the installation groove (10), and the other end abuts against the side wall of the installation groove (10) close to the printing screen plate (3).

6. The quick-release device for SMT red glue printing stencil according to claim 5, wherein, A limiting plate (66) is provided on the support plate (2), and the limiting plate (66) and the groove (9) cooperate to form a fitting groove (11) for the locking tongue (64) to be installed and embedded.

7. A quick-release device for an SMT red glue printing stencil according to claim 6, characterized in that, One end of the locking tongue (64) close to the printing stencil (3) is provided with a first step (12), and a chamfer (13) is provided on the first step (12).

8. A quick-release device for SMT red glue printing stencils according to claim 1, characterized in that, A second step (14) is provided on the printing stencil (3), and a through hole (15) is provided on the support plate (2). The printing stencil (3) is fitted and installed on the support plate (2) by fitting the second step (14) into the through hole (15).

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