High-precision photovoltaic adhesive application device
Patent Information
- Application Number
- CN202521814292.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-08-26
AI Technical Summary
但是，由于边框尺寸一般较长，如何在点胶过程中对边框进行定位，成为需要解决的问题；此外，如果打胶头单位时间的出胶量较少，极易导致打胶头的出胶量不均匀，致使边框的待涂胶区域各处密封胶的含量不一致，如果打胶头单位时间的出胶量增多，则容易出现胶水外溢的情况
本实用新型高精度光伏打胶装置，其可沿X向装载于第一基座与第二基座之间的条形工件上开设有一沿其长度方向延伸的条形凹槽，该条形凹槽一侧的侧壁高于另一侧，点胶嘴的另一端用于向条形凹槽内点胶，机架上安装有一X向驱动机构，可沿X向移动的X向驱动机构的活动部上安装有一Z轴驱动机构，该Z轴驱动机构的活动部上连接有一支撑座，一沿Z轴方向延伸的驱动轴可转动地安装于支撑座上，驱动轴的一端与安装于支撑座上的电机连接，点胶阀通过一连接架安装于驱动轴的另一端，点胶嘴包括沿Z轴方向延伸的本体部和与点胶阀的出胶口连接的套筒部，本体部内开设有一与套筒部连通的出胶流道，本体部远离套筒部一端的端面设置为斜面，当点胶嘴的本体部远离套筒部的一端嵌入条形工件上的条形凹槽内时，本体部远离套筒部一端的端面朝向条形凹槽较高一侧的侧壁，在实现对条形工件进行装载定位的基础上，通过可随电机旋转的点胶嘴上出胶斜面与条形工件条形凹槽较高一侧的侧壁之间的配合，既可以有效避免胶水溢出条形凹槽，又可以将自出胶流道的斜面处流出的胶液自然铺开并在条形凹槽内形成均匀连续分布的胶层，提高点胶的均匀性与一致性以及与外部构件之间的粘接稳定性；进一步的，其第一基座、第二基座各自的上表面可活动地安装有第一推板、第二推板，可沿X向移动的第一推板与一安装于第一基座上的第一气缸的活塞杆连接，与第一推板反方向移动的第二基座与一安装于第二推板上的第二气缸的活塞杆连接，第一气缸与第二气缸同步伸缩，第一推板靠近第二推板一端的端面延伸至第一基座的外侧并安装有至少一个第一推块，第二推板靠近第一推板一端的端面延伸至第二基座的外侧并安装有至少一个与第一推块对应的第二推块，当第一气缸、第二气缸从第一状态切换至第二状态时，第一推板与第二推板相向靠近直至对应设置的第一推块与第二推块各自均与位于其二者之间的条形工件的端面挤压接触，通过同步且相向靠近的第一与第二推块实现对条状工件在其宽度方向上的对中，从而实现对工件位置精度的校准，从而提高对条形工件进行点胶的精度与品质。
Smart Images
Figure CN224700456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic processing technology, and in particular to a high-precision photovoltaic glue applicator used for glue application in photovoltaic processing production lines. Background Technology
[0002] Photovoltaic modules typically consist of a laminate, a junction box, and a frame, and are commonly used in transportation, communications, petroleum, marine, and meteorological fields. In practical applications, the frame is installed around the laminate, and a sealant is used between the frame and the laminate to enhance sealing. In existing technology, a glue applicator's nozzle is typically inserted into a groove in the frame for glue application. However, since frames are generally quite long, proper positioning of the frame during the glue application process becomes a problem. Furthermore, if the glue dispensing rate is low, uneven glue distribution can easily occur, resulting in inconsistent sealant content across the frame's application area. Conversely, if the glue dispensing rate is high, glue overflow can easily occur. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a high-precision photovoltaic glue dispensing device. This high-precision photovoltaic glue dispensing device can effectively prevent glue from overflowing into the strip groove and improve the uniformity and consistency of glue dispensing, while realizing the loading and positioning of strip workpieces.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-precision photovoltaic glue dispensing device, comprising: a frame, a dispensing valve movably mounted on the frame, a dispensing nozzle connected at one end to the dispensing outlet of the dispensing valve, and a first base and a second base spaced apart below the dispensing nozzle along the X direction. A strip-shaped groove extending along its length direction is formed on the strip-shaped workpiece that can be loaded between the first base and the second base along the X direction. The side wall of one side of the strip-shaped groove is higher than the other side. The other end of the dispensing nozzle is used to dispense glue into the strip-shaped groove. An X-axis drive mechanism is mounted on the frame. A Z-axis drive mechanism is mounted on the movable part of the X-axis drive mechanism, which is movable along the X-axis. A support base is connected to the movable part of the Z-axis drive mechanism. A drive shaft extending along the Z-axis is rotatably mounted on the support base. One end of the drive shaft is connected to a motor mounted on the support base. The dispensing valve is mounted on the other end of the drive shaft via a connecting bracket. The dispensing nozzle includes a body extending along the Z-axis and a sleeve connected to the dispensing port of the dispensing valve. A dispensing channel communicating with the sleeve is formed in the body. The end face of the body away from the sleeve is set as an inclined surface. When the end of the body of the dispensing nozzle away from the sleeve is embedded in the strip groove on the strip workpiece, the end face of the body away from the sleeve faces the side wall of the higher side of the strip groove.
[0005] The following are further improvements to the above technical solution: 1. In the above scheme, the first base and the second base are respectively located below both ends of the X-direction drive mechanism and mounted on the frame.
[0006] 2. In the above scheme, a first push plate and a second push plate are movably mounted on the upper surfaces of the first base and the second base, respectively. The first push plate, which can move along the X direction, is connected to the piston rod of a first cylinder mounted on the first base. The second base, which moves in the opposite direction to the first push plate, is connected to the piston rod of a second cylinder mounted on the second push plate. The first cylinder and the second cylinder extend and retract synchronously. The end face of the first push plate near the second push plate extends to the outside of the first base and is equipped with at least one first push block. The end face of the second push plate near the first push plate extends to the outside of the second base and is equipped with at least one second push block corresponding to the first push block. When the first cylinder and the second cylinder switch from the first state to the second state, the first push plate and the second push plate approach each other until the corresponding first push block and second push block each make contact with the end face of the strip workpiece located between them.
[0007] 3. In the above scheme, the drive shaft passes through the support seat and rotates with the support seat through at least two spaced bearings.
[0008] 4. In the above scheme, a speed reducer is provided between the motor and the drive shaft, and the drive shaft is connected to the output shaft of the speed reducer.
[0009] 5. In the above scheme, the length of the strip-shaped workpiece is greater than 1 meter.
[0010] 6. In the above scheme, a first Y-axis drive mechanism and a second Y-axis drive mechanism are respectively installed on the bracket, and the two ends of the X-axis drive mechanism are respectively connected to the movable parts of the first Y-axis drive mechanism and the second Y-axis drive mechanism, which can move synchronously along the Y-axis.
[0011] 7. In the above scheme, the cross-section of the glue outlet channel is set to be strip-shaped.
[0012] 8. In the above scheme, the angle between the end face of the main body part away from the sleeve part and the Z-axis direction is 20°~60°.
[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a high-precision photovoltaic adhesive dispensing device. A strip-shaped workpiece, mounted along the X-axis between a first base and a second base, has a strip-shaped groove extending along its length. One side wall of the groove is higher than the other. The other end of a dispensing nozzle is used to dispense adhesive into the groove. An X-axis drive mechanism is mounted on the frame. A Z-axis drive mechanism is mounted on the movable part of the X-axis drive mechanism, which is movable along the X-axis. A support base is connected to the movable part of the Z-axis drive mechanism. A drive shaft extending along the Z-axis is rotatably mounted on the support base. One end of the drive shaft is connected to a motor mounted on the support base. The dispensing valve is mounted via a connecting bracket. At the other end of the drive shaft, the dispensing nozzle includes a body extending along the Z-axis and a sleeve connected to the dispensing valve's outlet. The body has a dispensing channel communicating with the sleeve. The end face of the body away from the sleeve is beveled. When the end of the dispensing nozzle away from the sleeve is embedded in the strip-shaped groove on the strip-shaped workpiece, the end face of the body away from the sleeve faces the higher side wall of the strip-shaped groove. This achieves loading and positioning of the strip-shaped workpiece. Furthermore, the cooperation between the beveled dispensing surface of the dispensing nozzle (which rotates with the motor) and the higher side wall of the strip-shaped groove effectively prevents glue from overflowing into the groove. Furthermore, the adhesive flowing from the inclined surface of the dispensing channel can be naturally spread out and form a uniformly and continuously distributed adhesive layer in the strip groove, improving the uniformity and consistency of dispensing and the bonding stability with external components; Additionally, a first push plate and a second push plate are movably mounted on the upper surfaces of the first base and the second base, respectively. The first push plate, which can move along the X direction, is connected to the piston rod of a first cylinder mounted on the first base. The second base, which moves in the opposite direction to the first push plate, is connected to the piston rod of a second cylinder mounted on the second push plate. The first cylinder and the second cylinder extend and retract synchronously. The end face of the first push plate near the second push plate extends to the first... At least one first push block is installed on the outer side of the base. The end face of the second push plate near one end of the first push plate extends to the outer side of the second base and at least one second push block corresponding to the first push block is installed. When the first cylinder and the second cylinder switch from the first state to the second state, the first push plate and the second push plate move closer to each other until the corresponding first push block and the second push block each make contact with the end face of the strip workpiece located between them. By the synchronous and moving closer first and second push blocks, the strip workpiece is centered in its width direction, thereby calibrating the positional accuracy of the workpiece and improving the accuracy and quality of dispensing glue to the strip workpiece. Attached Figure Description
[0014] Appendix Figure 1 This is a schematic diagram of the overall structure of the high-precision photovoltaic adhesive applicator of this utility model; Appendix Figure 2 For the appendix Figure 1 An enlarged view of point A in the structural schematic diagram shown; Appendix Figure 3 This is a partial structural diagram of the high-precision photovoltaic adhesive applicator of this utility model; Appendix Figure 4 For the appendix Figure 3 An enlarged view of point B in the structural schematic diagram shown; Appendix Figure 5 For the appendix Figure 3 An enlarged view of point C in the structural schematic diagram shown; Appendix Figure 6 This is a schematic diagram of the second part of the structure of the high-precision photovoltaic adhesive applicator of this utility model; Appendix Figure 7 This is a partial cross-sectional view of the high-precision photovoltaic adhesive applicator of this utility model.
[0015] In the attached figures above: 100, strip-shaped workpiece; 101, strip-shaped groove; 1, frame; 2, dispensing valve; 3, dispensing nozzle; 31, body; 32, sleeve; 33, dispensing channel; 4, X-axis drive mechanism; 51, first Y-axis drive mechanism; 52, second Y-axis drive mechanism; 6, Z-axis drive mechanism; 7, waste cup; 8, oil cup; 9, support base; 10, drive shaft; 11, motor; 12, connecting frame; 13, bearing; 14, reducer; 15, first base; 16, second base; 171, first push plate; 172, second push plate; 181, first push block; 182, second push block; 191, first cylinder; 192, second cylinder; 201, slide rail; 202, slider; 21, support base. Detailed Implementation
[0016] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.
[0017] Example 1: A high-precision photovoltaic glue application device includes: a frame 1, a glue dispensing valve 2 movably mounted on the frame 1, a glue dispensing nozzle 3 connected at one end to the glue outlet of the glue dispensing valve 2, and a first base 15 and a second base 16 spaced apart below the glue dispensing nozzle 3 along the X direction. The strip-shaped workpiece 100, which can be loaded between the first base 15 and the second base 16 along the X direction, has a strip-shaped groove 101 extending along its length direction. The side wall of the strip-shaped groove 101 is higher on one side than on the other side. The other end of the glue dispensing nozzle 3 is used to dispense glue into the strip-shaped groove 101. An X-axis drive mechanism 4 is mounted on the frame 1. A Z-axis drive mechanism 6 is mounted on the movable part of the X-axis drive mechanism 4, which is movable along the X-axis. A support base 9 is connected to the movable part of the Z-axis drive mechanism 6. A drive shaft 10 extending along the Z-axis is rotatably mounted on the support base 9. One end of the drive shaft 10 is connected to a motor 11 mounted on the support base 9. The dispensing valve 2 is mounted on the other end of the drive shaft 10 via a connecting bracket 12. The dispensing nozzle 3 includes... The body portion 31 extends along the Z-axis and the sleeve portion 32 is connected to the dispensing port of the dispensing valve 2. The body portion 31 has a dispensing channel 33 that communicates with the sleeve portion 32. The end face of the body portion 31 away from the sleeve portion 32 is set as an inclined surface. When the end of the body portion 31 of the dispensing nozzle 3 away from the sleeve portion 32 is embedded in the strip groove 101 on the strip workpiece 100, the end face of the body portion 31 away from the sleeve portion 32 faces the side wall of the higher side of the strip groove 101.
[0018] The first base 15 and the second base 16 are respectively located below both ends of the X-direction drive mechanism 4 and mounted on the frame 1.
[0019] A first push plate 171 and a second push plate 172 are movably mounted on the upper surfaces of the first base 15 and the second base 16, respectively. The first push plate 171, which is movable along the X-direction, is connected to the piston rod of a first cylinder 191 mounted on the first base 15. The second base 16, which moves in the opposite direction to the first push plate 171, is connected to the piston rod of a second cylinder 192 mounted on the second push plate 172. The first cylinder 191 and the second cylinder 192 extend and retract synchronously. The end face of the first push plate 171 near the second push plate 172 extends to the first base 15. At least one first push block 181 is installed on the outer side of the base 15. The end face of the second push plate 172 near one end of the first push plate 171 extends to the outer side of the second base 16 and at least one second push block 182 corresponding to the first push block 181 is installed. When the first cylinder 191 and the second cylinder 192 switch from the first state to the second state, the first push plate 171 and the second push plate 172 approach each other until the corresponding first push block 181 and the second push block 182 are each pressed into contact with the end face of the strip workpiece 100 located between them.
[0020] The first push plate 171 and the second push plate 172 are each mounted on the first base 15 and the second base 16 via at least one set of slide rails 201 and sliders 202; the first push block 181 and the second push block 182 are both flexible push blocks; there are two of each of the first push block 181 and the second push block 182; the first state of the first cylinder 191 and the second cylinder 192 is the piston rod retracted state, and the second state of the first cylinder 191 and the second cylinder 192 is the piston rod extended state.
[0021] The aforementioned drive shaft 10 passes through the support base 9 and is rotatably engaged with the support base 9 through at least two spaced bearings 13; a reducer 14 is provided between the aforementioned motor 11 and the drive shaft 10, and the drive shaft 10 is connected to the output shaft of the reducer 14; the angle between the end face of the aforementioned body part 31 away from the sleeve part 32 and the Z-axis direction is 30°.
[0022] Example 2: A high-precision photovoltaic glue application device includes: a frame 1, a glue dispensing valve 2 movably mounted on the frame 1, a glue dispensing nozzle 3 connected at one end to the glue outlet of the glue dispensing valve 2, and a first base 15 and a second base 16 spaced apart below the glue dispensing nozzle 3 along the X direction. The strip-shaped workpiece 100, which can be loaded along the X direction between the first base 15 and the second base 16, has a strip-shaped groove 101 extending along its length direction. The side wall of the strip-shaped groove 101 is higher on one side than on the other side. The other end of the glue dispensing nozzle 3 is used to dispense glue into the strip-shaped groove 101. An X-axis drive mechanism 4 is mounted on the frame 1. A Z-axis drive mechanism 6 is mounted on the movable part of the X-axis drive mechanism 4, which is movable along the X-axis. A support base 9 is connected to the movable part of the Z-axis drive mechanism 6. A drive shaft 10 extending along the Z-axis is rotatably mounted on the support base 9. One end of the drive shaft 10 is connected to a motor 11 mounted on the support base 9. The dispensing valve 2 is mounted on the other end of the drive shaft 10 via a connecting bracket 12. The dispensing nozzle 3 includes... The body portion 31 extends along the Z-axis and the sleeve portion 32 is connected to the dispensing port of the dispensing valve 2. The body portion 31 has a dispensing channel 33 that communicates with the sleeve portion 32. The end face of the body portion 31 away from the sleeve portion 32 is set as an inclined surface. When the end of the body portion 31 of the dispensing nozzle 3 away from the sleeve portion 32 is embedded in the strip groove 101 on the strip workpiece 100, the end face of the body portion 31 away from the sleeve portion 32 faces the side wall of the higher side of the strip groove 101. The length of the strip-shaped workpiece 100 is greater than 1 meter; the bracket 1 is respectively equipped with a first Y-axis drive mechanism 51 and a second Y-axis drive mechanism 52, and the two ends of the X-axis drive mechanism 4 are respectively connected to the movable parts of the first Y-axis drive mechanism 51 and the second Y-axis drive mechanism 52, which can move synchronously along the Y-axis.
[0023] The cross-section of the aforementioned glue outlet channel 33 is set to be strip-shaped; the angle between the end face of the aforementioned body part 31 away from the sleeve part 32 and the Z-axis direction is 50°.
[0024] In normal conditions, the first cylinder and the second cylinder are placed in the first state, at which time the distance between the symmetrically arranged first and second push blocks is the largest. At least one strip-shaped workpiece is transported between the first and second push blocks by an external transport platform. At this time, the first and second cylinders are synchronously driven to switch from the first state to the second state. The first and second push blocks move closer to each other until they are in contact with the end face of one end of the strip-shaped workpiece, thereby realizing the loading and centering calibration of the workpiece. The strip groove on the loaded strip workpiece to be glued extends along the X direction and is located below the glue dispensing nozzle; Next, the position of the dispensing nozzle in the horizontal direction is adjusted by the first Y-axis drive mechanism, the second Y-axis drive mechanism and the X-axis drive mechanism so that it is located above one end of the strip groove on the strip workpiece. Next, the motor drives the drive shaft to rotate the dispensing valve with the dispensing nozzle installed, so that the inclined surface of the dispensing nozzle away from the dispensing valve faces the side wall of the higher side of the strip groove. Then, the end of the dispensing nozzle furthest from the dispensing valve is embedded into the strip groove by the Z-axis drive mechanism, and the distance between the dispensing nozzle and the strip groove on the strip workpiece is optimal. Finally, the X-axis drive mechanism drives the dispensing nozzle to dispense adhesive along the length of the strip groove, dispensing the adhesive from the dispensing nozzle into the strip groove on the strip workpiece. During this process, the adhesive flowing out from the inclined surface of the adhesive channel naturally spreads out and forms a uniform and continuous adhesive layer in the strip groove, improving the uniformity and consistency of dispensing. Furthermore, when the external component to be bonded (such as photovoltaic glass) is subsequently embedded into the strip groove coated with adhesive, the bonding stability between it and the strip workpiece can be improved. After dispensing glue to one strip workpiece, the first Y-axis drive mechanism and the second Y-axis drive mechanism can simultaneously drive the X-axis drive mechanism to move the dispensing nozzle above one end of the groove on the next strip workpiece. Repeat the above steps to achieve the dispensing operation on another strip workpiece.
[0025] The aforementioned high-precision photovoltaic adhesive dispensing device, while achieving loading and positioning of the strip-shaped workpiece, effectively prevents adhesive overflow from the groove by cooperating with the inclined surface of the dispensing nozzle, which rotates with the motor, and the side wall of the higher side of the groove in the strip-shaped workpiece. This also allows the adhesive flowing from the inclined surface of the dispensing channel to spread naturally and form a uniformly and continuously distributed adhesive layer within the groove, improving the uniformity and consistency of dispensing and the bonding stability with external components. Furthermore, the synchronous and approaching first and second push blocks center the strip-shaped workpiece in its width direction, thereby calibrating the workpiece's positional accuracy and improving the precision and quality of dispensing adhesive onto the strip-shaped workpiece.
[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A high-precision photovoltaic adhesive application device, comprising: A frame (1), a dispensing valve (2) movably mounted on the frame (1), a dispensing nozzle (3) connected at one end to the dispensing port of the dispensing valve (2), and a first base (15) and a second base (16) spaced apart below the dispensing nozzle (3) along the X direction, characterized in that: a strip-shaped workpiece (100) that can be loaded between the first base (15) and the second base (16) along the X direction has a strip-shaped groove (101) extending along its length direction, one side wall of the strip-shaped groove (101) is higher than the other side, and the other end of the dispensing nozzle (3) is used to dispense glue into the strip-shaped groove (101); An X-axis drive mechanism (4) is mounted on the frame (1). A Z-axis drive mechanism (6) is mounted on the movable part of the X-axis drive mechanism (4), which is movable along the X-axis. A support base (9) is connected to the movable part of the Z-axis drive mechanism (6). A drive shaft (10) extending along the Z-axis is rotatably mounted on the support base (9). One end of the drive shaft (10) is connected to a motor (11) mounted on the support base (9). The dispensing valve (2) is mounted on the other end of the drive shaft (10) via a connecting bracket (12). The dispensing nozzle (3) includes a component extending along the Z-axis. The body part (31) extends in the Z-axis direction and the sleeve part (32) is connected to the dispensing port of the dispensing valve (2). The body part (31) has a dispensing channel (33) that communicates with the sleeve part (32). The end face of the body part (31) away from the sleeve part (32) is set as an inclined surface. When the end of the body part (31) of the dispensing nozzle (3) away from the sleeve part (32) is embedded in the strip groove (101) on the strip workpiece (100), the end face of the body part (31) away from the sleeve part (32) faces the side wall of the higher side of the strip groove (101).
2. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: The first base (15) and the second base (16) are respectively located below the two ends of the X-direction drive mechanism (4) and mounted on the frame (1).
3. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: A first push plate (171) and a second push plate (172) are movably mounted on the upper surfaces of the first base (15) and the second base (16), respectively. The first push plate (171), which is movable in the X direction, is connected to the piston rod of a first cylinder (191) mounted on the first base (15). The second base (16), which moves in the opposite direction to the first push plate (171), is connected to the piston rod of a second cylinder (192) mounted on the second push plate (172). The first cylinder (191) and the second cylinder (192) extend and retract synchronously. The end face of the first push plate (171) near the second push plate (172) extends to the first... At least one first push block (181) is installed on the outer side of the base (15). The end face of the second push plate (172) near the end of the first push plate (171) extends to the outer side of the second base (16) and at least one second push block (182) corresponding to the first push block (181) is installed. When the first cylinder (191) and the second cylinder (192) switch from the first state to the second state, the first push plate (171) and the second push plate (172) move closer to each other until the corresponding first push block (181) and second push block (182) are each pressed into contact with the end face of the strip workpiece (100) located between them.
4. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: The drive shaft (10) passes through the support base (9) and rotates with the support base (9) through at least two spaced bearings (13).
5. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: A speed reducer (14) is provided between the motor (11) and the drive shaft (10), and the drive shaft (10) is connected to the output shaft of the speed reducer (14).
6. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: The length of the strip-shaped workpiece (100) is greater than 1 meter.
7. The high-precision photovoltaic adhesive applicator according to claim 6, characterized in that: The frame (1) is equipped with a first Y-axis drive mechanism (51) and a second Y-axis drive mechanism (52). The two ends of the X-axis drive mechanism (4) are connected to the movable parts of the first Y-axis drive mechanism (51) and the second Y-axis drive mechanism (52) which can move synchronously along the Y-axis.
8. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: The cross-section of the dispensing channel (33) is set as strip.
9. The high-precision photovoltaic adhesive applicator according to claim 1, characterized in that: The angle between the end face of the main body (31) away from the sleeve (32) and the Z-axis direction is 20°~60°.