Display screen sealing and dispensing machine

Abstract

The invention relates to the technical field of dispensing machines, in particular to a display screen sealing and dispensing machine. Comprising a dispensing table and a dispensing plate which slides back and forth on the dispensing table; the upper surface of the dispensing table is connected with a dispensing head through left and right arms and upper and lower arms; a driving groove is formed in the upper surface of the dispensing table; the driving groove is formed by communicating, transitioning and combining a deep groove at the front position and a shallow groove at the rear position; an L-shaped angle bead is arranged at the position, close to the front corner, of the upper surface of the dispensing plate; the inner screen is preliminarily positioned through the L-shaped angle strips, and the inner screen on the upper surface of the dispensing plate is adsorbed and fixed by matching with the first air holes, so that the dispensing machine can be suitable for dispensing screens of different specifications, the application range is wide, and the inner screen can be automatically fixed and unlocked before and after dispensing, so that the use and the operation are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of dispensing machines, and more specifically to a dispensing machine for sealing display screens. Background Art

[0002] The operation of sealing display screens is mainly completed by a dispensing machine, which is a precision device widely used in fields such as electronic manufacturing. It is specifically designed to precisely control the dispensing of materials such as glue to achieve functions such as bonding and sealing between components.

[0003] During the dispensing process of the display screen, the inner screen is first placed in a concave-frame type tooling. This concave type tooling has a clever design, and its internal cross-section is adapted to the specifications of the inner screen, playing an important role. On the one hand, it can accurately position the inner screen before dispensing, ensuring that the inner screen is in the best dispensing position, laying the foundation for the accuracy of subsequent dispensing; on the other hand, it provides a reliable limiting function to prevent unnecessary displacement of the inner screen during the dispensing process. During dispensing, the tooling moves back and forth on the workbench along with the dispensing machine, while the dispensing head on the dispensing machine moves flexibly in the left-right direction and the vertical direction through the left and right arms and the up and down arms. Since the dispensing head can move on the x-axis - y-axis - z-axis, it can accurately complete the dispensing operation along the edge of the inner screen. After dispensing, the outer screen covers the inner screen, and the two are sealed and bonded through a sealing glue to form a complete display screen.

[0004] However, the existing technology has certain limitations. The production of display screens covers a variety of specifications. For some small-sized or different-sized inner screens, this concave-frame type tooling is not very applicable. When the inner screen is smaller than the internal cross-section specification of the concave-frame type tooling, even if it is placed in the tooling, the inner screen is still prone to displacement within the tooling during the forward and backward movement of the tooling. This will cause deviation in the dispensing position, affecting the quality and performance of the display screen. Therefore, when the existing dispensing machine is used for dispensing display screens of various specifications, its versatility is poor and it cannot well meet the diverse production requirements. Summary of the Invention

[0005] In order to make up for the deficiencies of the existing technology, the present invention proposes a dispensing machine for sealing display screens. The present invention preliminarily positions the inner screen through an L-shaped angle bar and cooperates with the first air holes to adsorb and fix the inner screen on the upper surface of the dispensing plate, so that the dispensing machine can be applicable to the dispensing of display screens of different specifications, with a wide range of applications. Moreover, since the inner screen can be self-fixed and unlocked before and after dispensing, the use and operation are convenient.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A display screen sealing and dispensing machine described in the present invention includes a dispensing table and a dispensing plate that slides back and forth on the dispensing table; a driving groove is provided on the upper surface of the dispensing table; the driving groove is composed of a deep groove at the front position and a shallow groove at the rear position that are connected and transitioned; an L-shaped corner strip is provided at the front corner position on the upper surface of the dispensing plate; an air cavity is provided inside the dispensing plate; an air plate is elastically slidably and sealingly connected up and down inside the air cavity; the air plate divides the air cavity into an upper cavity at the upper position and a lower cavity at the lower position; a driving strip is fixedly connected to the lower surface of the air plate; the lower end of the driving strip passes through the dispensing plate and extends into the driving groove; the driving strip is slidably and sealingly connected to the dispensing plate. The L-shaped corner strip is provided on the left side and the front side close to the dispensing plate; adjustment shells are fixedly connected to the right side and the rear side edges of the dispensing plate; an adjustment groove is provided in the adjustment shell facing the center of the dispensing plate; a plurality of adjustment sleeves are slidably and sealingly connected in the adjustment groove; the innermost adjustment sleeve is fixedly connected to an adjustment plate outward; the bottom of the adjustment groove communicates with the upper cavity through a third air hole. A first insertion hole runs through the adjustment groove up and down; a first insertion rod is movably and sealingly connected to the first insertion hole up and down; a first square hole corresponding to the first insertion hole is provided on the inner wall of the adjustment groove; a first square block is inserted into the first square hole; the lower end of the first insertion rod passes through the first insertion hole and extends into the adjustment groove, and is fixedly connected to the first square block; a limiting rope is connected between the first insertion rod and the adjustment plate.

[0007] Preferably, the upper surface of the dispensing table is connected to a dispensing head through left and right arms and upper and lower arms; a convex block protrudes from the upper surface of the dispensing plate; the upper surface of the dispensing plate communicates with the lower cavity through a first air hole; the orifice of the first air hole is provided on the upper surface of the convex block; the number of the first air holes is two.

[0008] Preferably, an L-shaped corner groove is provided on the upper surface of the dispensing plate; the L-shaped corner strip is slidably and sealingly connected in the L-shaped corner groove; the bottom of the L-shaped corner groove communicates with the lower cavity through a second air hole.

[0009] Preferably, a second spring is connected between the lower end of the L-shaped corner strip and the bottom of the L-shaped corner groove.

[0010] Preferably, air holes run through the inside and outside of the adjustment plate.

[0011] Preferably, an avoidance hole is provided on the surface of the adjustment shell in contact with the adjustment plate; an elastic rope is connected between the bottom of the avoidance hole and the adjustment plate.

[0012] Preferably, a delay groove is provided on the lower inner wall of the lower cavity; the first air hole communicates with the bottom of the delay groove; a delay block is sealingly engaged in the delay groove; the upper surface of the delay block is connected to the lower surface of the air plate through a third spring.

[0013] Preferably, a gas one-way valve is vertically penetrated through the delay block; the gas in the gas one-way valve can flow downward unidirectionally.

[0014] The beneficial effects of the present invention are as follows: 1. In the present invention, the inner screen is initially positioned by the L-shaped angle bar, and the inner screen on the upper surface of the dispensing plate is adsorbed and fixed in cooperation with the first air holes, so that the dispensing machine can be applicable to dispensing of screens with different specifications, with a wide application range. Moreover, since the inner screen can be self-fixed and unlocked before and after dispensing, the use and operation are convenient.

[0015] 2. Before the inner screen is adsorbed and locked, the present invention shields and limits the inner screen, so that the inner screen will not be displaced as the dispensing plate moves before being tightly sucked by negative pressure. After the inner screen is tightly sucked, the L-shaped angle bar moves away around the inner screen. After the L-shaped angle bar moves away around the inner screen, it disengages from the contact with the inner screen, so that the surrounding space around the edge of the inner screen is vacated, and thus it will not interfere with the dispensing and subsequent outer screen pasting operations, which is more convenient for personnel to operate and makes the dispensing and pasting processes smoother.

[0016] 3. The gas in the upper cavity of the present invention will enter the adjustment groove along the third air hole. When the air pressure in the adjustment groove increases, it will push the adjustment plate to move away from the adjustment shell against the elastic cord. The adjustment plate will move closer to the center of the dispensing plate. During the forward movement of the adjustment plate located at the rear side of the dispensing plate, it will push the inner screen forward. During the leftward movement of the adjustment plate located at the right side of the dispensing plate, it will push the inner screen leftward. In this way, the inner screen is close to the inner corner position of the L-shaped angle bar, realizing the self-position adjustment of the inner screen, saving the labor for placing and adjusting the position of the inner screen, and improving the convenience of screen dispensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a perspective view of the present invention; Figure 2 is Figure 1 the enlarged view of A in Figure 3 is a cross-sectional view of the present invention; Figure 4 is Figure 3 the enlarged view of B in Figure 5 is a schematic cross-sectional structure view of the adjustment shell in the present invention.

[0019] In the figure: dispensing platform 1, left and right arms 11, upper and lower arms 12, dispensing head 13, driving groove 14, deep groove 141, shallow groove 142, dispensing plate 2, air cavity 21, upper cavity 211, lower cavity 212, first air hole 22, protrusion 23, L-shaped angle groove 24, second air hole 25, delay groove 26, L-shaped angle strip 3, second spring 31, air plate 4, first spring 41, driving strip 42, adjustment shell 5, adjustment groove 51, adjustment sleeve 52, third air hole 53, avoidance hole 54, elastic rope 55, first plug hole 56, first square hole 57, adjustment plate 6, air vent 61, first plug rod 7, first square block 71, limit rope 72, delay block 8, third spring 81, gas one-way valve 82. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figures 1 to 5 As shown, the present invention includes the following embodiments: Embodiment 1: A display screen sealing glue dispensing machine, comprising a glue dispensing platform 1 and a glue dispensing plate 2 that slides forward and backward on the glue dispensing platform 1; the upper surface of the glue dispensing platform 1 is connected to a glue dispensing head 13 through left and right arms 11 and upper and lower arms 12; a driving groove 14 is provided on the upper surface of the glue dispensing platform 1; the driving groove 14 is connected and transitioned by a deep groove 141 at the front position and a shallow groove 142 at the rear position; an L-shaped corner strip 3 is provided at the front corner position of the upper surface of the glue dispensing plate 2; an air cavity 21 is provided inside the glue dispensing plate 2; the air cavity The air plate 4 is connected to the air cavity 21 in an upward and downward sliding and sealing manner; the air plate 4 divides the air cavity 21 into an upper cavity 211 at an upper position and a lower cavity 212 at a lower position; the upper surface of the dispensing plate 2 is connected to the inner bottom wall of the lower cavity 212 through the first air hole 22; the upper surface of the air plate 4 is connected to the upper inner wall of the upper cavity 211 through the first spring 41; the lower surface of the air plate 4 is fixedly connected to the driving strip 42; the lower end of the driving strip 42 passes through the dispensing plate 2 and extends into the driving groove 14; the driving strip 42 is connected to the dispensing plate 2 in a sliding and sealing manner.

[0022] In this embodiment, a bump 23 is protruding from the upper surface of the dispensing plate 2; the openings of the first air holes 22 are arranged on the upper surface of the bump 23; and the number of the first air holes 22 is two.

[0023] Above the dispensing table 1, the front position is the loading and unloading position (not labeled in the figure), and the rear position is the dispensing position (not labeled in the figure). The deep groove 141 is located within the loading and unloading position, and the shallow groove 142 is located within the dispensing position. The dispensing plate 2 is controlled to slide back and forth by a screw-slider pair (not labeled in the figure), specifically controlled by a motor (not labeled in the figure). On the upper surface of the dispensing plate 2, support blocks (not labeled in the figure) are fixedly connected at the front and rear. Between the two front and rear support blocks, a screw (not labeled in the figure) and a sliding rod (not labeled in the figure) are rotatably connected; at the rear end of the screw, a motor is fixedly connected, and the motor is fixedly connected to the dispensing table 1. The dispensing plate 2 is connected to the screw through one of the ear blocks (not labeled in the figure) by screw transmission, and the dispensing plate 2 is slidably connected to the sliding rod through the other ear block. The motor drives the screw to rotate, and the rotating screw will drive the dispensing plate 2 to move forward along the sliding rod to the loading and unloading position. The lower end of the driving strip 42 abuts against the bottom of the deep groove 141, and the lower cavity 212 is at the minimum volume. Subsequently, the inner screen in the screen is placed on the upper surface of the dispensing plate 2, and one of the front corners of the inner screen abuts against the inner side of the L-shaped angle bar 3, completing the placement and positioning of the inner screen. Subsequently, the reverse rotation of the motor will drive the screw to reverse. During the reverse rotation of the screw, it will drive the dispensing plate 2 to move backward along the sliding rod. During the backward movement of the dispensing plate 2, it will drive the inner screen and the L-shaped angle bar 3 on the upper surface to move backward. During the backward movement of the dispensing plate 2, it will drive the driving strip 42 to slide along the driving groove 14. The driving strip 42 will transition from the deep groove 141 of the driving groove 14 to the position of the shallow groove 142. The driving strip 42 will overcome the first spring 41 to squeeze the air plate 4 to move upward. During the upward movement of the air plate 4, it will move upward within the air cavity 21. In this way, the space of the upper cavity 211 becomes smaller, and the space within the lower cavity 212 becomes larger. The increase in the space within the lower cavity 212 will form a negative pressure. The upper surface of the dispensing plate 2 is connected to the lower cavity 212 through the first air hole 22. The orifice of the first air hole 22 on the upper surface of the dispensing plate 2 is blocked and covered by the inner screen. In this way, during the formation of negative pressure in the first air hole 22, the lower surface of the inner screen will be adsorbed on the upper surface of the dispensing plate 2, realizing the limit locking of the inner screen. After the inner screen moves with the dispensing plate 2 to the range of the dispensing position, the dispensing plate 2 will move back and forth in the range of the dispensing position according to the dispensing requirements. The left and right arms 11 can control the up and down arms 12 to move left and right, and the up and down arms 12 can control the dispensing head 13 to move up and down. In this way, the dispensing head 13 can move to any position in the front, back, left, right, and up and down directions relative to the inner screen, meeting the moving requirements of any position. In this way, the dispensing head 13 can perform dispensing along the upper edge of the inner screen. During the dispensing process of the dispensing plate 2, the inner screen will move with the movement of the dispensing plate 2. Since the inner screen is adsorbed and fixed on the upper surface of the dispensing plate 2, inner screens of different specifications can be stably locked on the upper surface of the dispensing plate 2. After the inner screen is locked, during the dispensing process, the inner screen will not shift with the dispensing plate 2, improving the stability of the inner screen dispensing process; after the dispensing is completed, within the range of the dispensing position, lift the dispensing head 13, tear off the film of the inner screen, and after tearing off the film of the outer screen, stick the outer screen on the upper surface of the inner screen to achieve the sealing and bonding of the inner screen and the outer screen;Next, control the motor to rotate forward to drive the screw to rotate forward. The screw will drive the dispensing plate 2 to move forward along the slide bar. The dispensing plate 2 will drive the bonded inner screen and outer screen to move from the dispensing position to the loading and unloading position. The dispensing plate 2 will drive the drive bar 42 to slide along the drive groove 14. The drive bar 42 will move from the shallow groove 142 to the deep groove 141 position. The first spring 41 will push the air plate 4 to move downward and slide in the air chamber 21. When the air plate 4 moves downward, the space in the lower chamber 212 will become smaller. In this way, the negative pressure in the lower chamber 212 and the orifice of the first air hole 22 gradually returns to normal pressure, and the first air hole 22 releases the adsorption and fixation of the inner screen. After the inner screen is unlocked, the inner screen and the outer screen can be removed from the upper surface position of the dispensing plate 2, and then a new round of screen dispensing can be carried out. In this embodiment, by providing a convex block 23 on the upper surface of the dispensing plate 2, the inner screen will be placed on the upper surface of the convex block 23 and block the orifice of the first air hole 22 on the upper surface of the convex block 23. The wire harness connected to the inner screen is avoided from the convex block 23 to ensure the contact effect between the inner screen and the upper surface of the convex block 23. In addition, since the number of the first air holes 22 is two, the two adsorption points will make the adsorption effect of the inner screen more stable and not easy to shift. In the present invention, the inner screen is initially positioned by the L-shaped angle bar 3, and the inner screen on the upper surface of the dispensing plate 2 is adsorbed and fixed in cooperation with the first air hole 22, so that the dispenser can be applied to screen dispensing of different specifications, with a wide range of applications. Moreover, since the inner screen can be self-fixed and unlocked before and after dispensing, the use and operation are convenient.

[0024] Embodiment 2: An L-shaped angle groove 24 is provided on the upper surface of the dispensing plate 2; the L-shaped angle bar 3 is slidably and sealingly connected in the L-shaped angle groove 24; the bottom of the L-shaped angle groove 24 communicates with the lower inner wall of the lower chamber 212 through a second air hole 25.

[0025] In this embodiment, a second spring 31 is connected between the lower end of the L-shaped angle bar 3 and the bottom of the L-shaped angle groove 24.

[0026] When the dispensing plate 2 is in the loading and unloading position, the L-shaped corner strip 3 on the upper surface of the dispensing plate 2 protrudes from the L-shaped corner groove 24. In this way, after the inner screen is placed on the upper surface of the dispensing plate 2, the inner angle of the L-shaped corner strip 3 can position the placement of the inner screen. In this way, the corners of inner screens of different specifications can be based on the inner angle of the L-shaped corner strip 3. The dispenser will preset the dispensing movement path and start dispensing from a position close to the L-shaped corner strip 3 to ensure the accuracy of the dispensing position; after the placement of the inner screen is completed, the dispensing plate 2 will move backward. During the backward movement of the dispensing plate 2, the driving strip 42 will be driven to slide along the driving groove 14. The driving strip 42 will move from the deep groove 141 of the driving groove 14 to the shallow groove 142 position, causing the air plate 4 to move upward, increasing the space of the lower cavity 212 to form a negative pressure. The gas inside the first air hole 22 and the second air hole 25 is sucked into the lower cavity 212 under the action of the negative pressure. Since the second spring 31 is arranged in the L-shaped corner groove 24, when negative pressures are formed in both the first air hole 22 and the second air hole 25, the L-shaped corner strip 3 will not immediately retract into the L-shaped corner groove 24. In this way, before the inner screen is adsorbed and locked, the inner screen is blocked and limited, so that the inner screen will not shift with the movement of the dispensing plate 2 before being tightly adsorbed by the negative pressure. Then, during the formation of the negative pressure at the orifice of the first air hole 22, the inner screen is negatively adsorbed, so that the inner screen is fixed after being negatively adsorbed. After the inner screen is locked, as the air plate 4 continues to move upward, further negative pressures are formed in the first air hole 22 and the second air hole 25. In this way, the L-shaped corner strip 3 overcomes the second spring 31 and retracts into the L-shaped corner groove 24 under the action of the negative pressure. In this way, the L-shaped corner strip 3 moves away around the inner screen. After the L-shaped corner strip 3 moves away around the inner screen, it disengages from the contact with the inner screen, thus making the surrounding space around the edge of the inner screen empty, and further not interfering with the dispensing and subsequent outer screen pasting operations, making it more convenient for personnel to operate and making the dispensing and pasting processes smoother; after the dispensing and pasting and sealing of the inner screen are completed, the dispensing plate 2 will move forward. During the forward movement of the dispensing plate 2, the L-shaped corner strip 3 will protrude from the L-shaped corner groove 24, and the first air hole 22 will also release the negative pressure adsorption on the inner screen, and the inner screen is unlocked and can be directly removed.

[0027] Embodiment 3: The L-shaped corner strip 3 is arranged near the left side and the front side of the dispensing plate 2; adjustment shells 5 are fixedly connected to the right side and the rear side edges of the dispensing plate 2; an adjustment groove 51 is arranged in the adjustment shell 5 facing the center of the dispensing plate 2; a plurality of adjustment sleeves 52 are slidably and sealingly connected in the adjustment groove 51; the innermost adjustment sleeve 52 is fixedly connected to an adjustment plate 6 outward; through holes 61 are arranged through the outer side and the inner side of the adjustment plate 6; the bottom of the adjustment groove 51 is communicated with the upper inner wall of the upper cavity 211 through a third air hole 53.

[0028] In this embodiment, an avoidance hole 54 is arranged on the surface of the adjustment shell 5 in contact with the adjustment plate 6; the bottom of the avoidance hole 54 is connected to the adjustment plate 6 through an elastic cord 55.

[0029] In this embodiment, a first jack 56 runs through the adjustment slot 51 vertically; the first jack 56 is hermetically connected to a first plug rod 7 in a vertically movable manner; a first square hole 57 is provided on the inner wall of the adjustment slot 51 corresponding to the first jack 56; a first square block 71 is inserted into the first square hole 57; the lower end of the first plug rod 7 extends into the adjustment slot 51 through the first jack 56 and is fixedly connected to the first square block 71; the first plug rod 7 is connected to the adjustment plate 6 through a limiting rope 72.

[0030] Before starting the dispensing machine, first move the first insertion rod 7 upward along the first insertion hole 56. During the upward movement of the first insertion rod 7, the first square block 71 will be driven upward, so that the first square block 71 is removed from the first square hole 57, realizing the rotational unlocking of the first insertion rod 7. Subsequently, rotate the first insertion rod 7. During the forward rotation of the first insertion rod 7, the limiting rope 72 will be wound up, and during the reverse rotation of the first insertion rod 7, the limiting rope 72 will be unwound to meet the requirement of the unfolded length of the limiting rope 72. When the unfolded length of the limiting rope 72 is shorter, the limit distance of the adjusting plate 6 from the corresponding adjusting shell 5 is shorter. When the unfolded length of the limiting rope 72 is longer, the limit distance of the adjusting plate 6 from the corresponding adjusting shell 5 is longer. After completing the adjustment of the unfolded length of the limiting rope 72, control the first insertion rod 7 to move downward. During the downward movement of the first insertion rod 7, the first square block 71 will be driven downward, so that the first square block 71 is inserted into the first square hole 57 again, so that the first insertion rod 7 completes the rotational locking. In order to improve the insertion effect of the first square block 71 in the first square hole 57, magnets (not shown in the figure) can be embedded in the first square block 71 and the inner wall of the first square hole 57, and the two magnets attract each other to achieve further locking; Subsequently, put the dispensing machine into use. After placing the inner screen on the upper surface of the dispensing plate 2, the dispensing plate 2 will move backward and drive the air plate 4 to move upward. During the upward movement of the air plate 4, the gas in the upper cavity 211 will be squeezed. The gas in the upper cavity 211 will enter the adjustment groove 51 along the third air hole 53. When the air pressure in the adjustment groove 51 increases, it will push the adjusting plate 6 to move away from the adjusting shell 5 against the elastic rope 55. The adjusting plate 6 will move closer to the center of the dispensing plate 2. During the forward movement of the adjusting plate 6 at the rear side of the dispensing plate 2, it will push the inner screen forward. During the leftward movement of the adjusting plate 6 at the right side of the dispensing plate 2, it will push the inner screen leftward, so that the inner screen is close to the inner corner position of the L-shaped angle bar 3, realizing the self-position adjustment of the inner screen, saving the manual placement and adjustment of the position of the inner screen, and improving the convenience of screen dispensing; After the adjusting plate 6 pushes the inner screen to move in place, the unfolded limiting rope 72 inside the adjustment groove 51 is also completely tightened. After the adjusting plate 6 moves away from the limit position of the adjusting shell 5, it cannot continue to push the inner screen to avoid damaging the inner screen by the adjusting plate 6, achieving the protection of the inner screen while adjusting the position of the inner screen; The adjustment of the unfolded length of the limiting rope 72 meets the position adjustment of inner screens of different specifications, and has a wide application range; The multiple adjusting sleeves 52 increase the movement range of the adjusting plate 6; The multiple adjusting sleeves 52 are slidably and sealingly connected to each other, and can ensure that they do not separate from each other while sliding; After the adjusting plate 6 pushes the inner screen to the limit position, the excess gas in the adjustment groove 51 will be discharged along the air vent 61; In addition, in order to ensure the force of the adjusting plate 6 to push the inner screen to move, an elastic diaphragm (not shown in the figure) can be arranged inside the orifice of the air vent 61, and the elastic diaphragm opens when the air pressure is greater than its own elasticity;After the dispensing plate 2 moves to the range of the dispensing position, the inner screen will also be tightly fixed by the negative pressure of the first air holes 22, and the air plate 4 will also stop moving up in the air cavity 21. In this way, the adjustment groove 51 will also stop discharging, and the air holes 61 will gradually discharge the gas in the adjustment groove 51. The elastic cord 55 will pull the adjustment plate 6 close to the corresponding adjustment housing 5, and a plurality of adjustment sleeves 52 will also retract into the corresponding adjustment grooves 51. The adjustment plate 6 will move away from the edge of the inner screen to form an avoidance so as not to affect subsequent dispensing and screen pasting; after dispensing and screen pasting are completed, the dispensing plate 2 will move forward into the loading and unloading position, and the air plate 4 will move down. External gas will enter the upper cavity 211 through the air holes 61, the adjustment grooves 51, and the third air holes 53 for gas replenishment.

[0031] Embodiment 4: A delay groove 26 is provided on the lower inner wall of the lower cavity 212; the first air holes 22 communicate with the bottom of the delay groove 26; a delay block 8 is hermetically engaged in the delay groove 26; the upper surface of the delay block 8 is connected to the lower surface of the air plate 4 through a third spring 81.

[0032] In this embodiment, a gas one-way valve 82 is provided through the delay block 8 up and down; the gas inside the gas one-way valve 82 can flow unidirectionally downward.

[0033] After the inner screen is placed on the upper surface of the dispensing plate 2, control the dispensing plate 2 to move backward. During the backward movement of the dispensing plate 2, the driving strip 42 will gradually transition from the position of the deep groove 141 to the position of the shallow groove 142. During the upward movement of the driving strip 42, the air plate 4 will move upward in the air chamber 21. During the upward movement of the air plate 4, the adjustment plate 6 will be triggered to push the inner screen for position adjustment. During the upward movement of the air plate 4, a negative pressure will be formed in the lower chamber 212. However, since the delay block 8 is pressed against the delay groove 26 under the elastic force of the third spring 81, and the elastic force of the third spring 81 is greater than the negative pressure in the lower chamber 212, the first air hole 22 and the lower chamber 212 are temporarily in a disconnected state. Thus, a negative pressure will not be formed in the first air hole 22 temporarily. In this way, the inner screen will not be sucked tightly by the negative pressure of the first air hole 22 during the process of being pushed by the adjustment plate 6 to adjust the position, enabling the inner screen to complete the position adjustment more smoothly. As the air plate 4 continues to move upward, the air plate 4 will drive the third spring 81 and the delay block 8 to move upward. Since the length of the third spring 81 is limited, the third spring 81 can be used as the air plate 4 to pull the delay block 8 upward. During the upward movement of the delay block 8, the delay groove 26 will be opened. Thus, the lower chamber 212 will communicate with the first air hole 22, and a negative pressure will be formed in the first air hole 22 to suck the inner screen tightly by negative pressure. In this way, the position of the inner screen is locked after the adjustment position; after the dispensing is completed, the dispensing plate 2 will drive the driving strip 42 to change from the shallow groove 142 to the position of the deep groove 141, and the air plate 4 will move downward. The air plate 4 will drive the third spring 81 and the delay block 8 to move downward. After the delay block 8 moves downward, it will be inserted into the delay groove 26. As the air plate 4 continues to move downward, the gas in the lower chamber 212 will be discharged along the gas one-way valve 82 and the first air hole 22, enabling the first air hole 22 to return to normal pressure and release the fixation of the inner screen.

Claims

1. A display sealing and dispensing machine, comprising a dispensing table and a dispensing plate that slides back and forth on the dispensing table; characterized in that: The upper surface of the dispensing table is provided with a driving groove; the driving groove is composed of a deep groove at the front position and a shallow groove at the rear position, which are connected and transitioned to form a combination; at the front corner position of the upper surface of the dispensing plate, there is an L-shaped corner strip; inside the dispensing plate, there is an air cavity; inside the air cavity, an air plate is elastically and slidably sealed and connected up and down; the air plate divides the air cavity into an upper cavity at the upper position and a lower cavity at the lower position; The lower surface of the air plate is fixedly connected with a driving strip; the lower end of the driving strip passes through the dispensing plate and extends into the driving groove; the driving strip is slidably and sealedly connected with the dispensing plate; The L-shaped corner strip is arranged near the left side and the front side of the dispensing plate; adjustment shells are fixedly connected to the right side and the rear side edges of the dispensing plate; the adjustment shells are provided with adjustment grooves facing the center of the dispensing plate; a plurality of adjustment sleeves are slidably and sealedly connected in the adjustment grooves; the innermost adjustment sleeve is fixedly connected with an adjustment plate outward; the bottom of the adjustment groove is communicated with the upper cavity through a third air hole; The adjustment groove is vertically penetrated with a first insertion hole; the first insertion hole is movably and sealedly connected with a first insertion rod up and down; a first square hole is arranged on the inner wall of the adjustment groove corresponding to the first insertion hole; a first square block is inserted in the first square hole; the lower end of the first insertion rod passes through the first insertion hole and extends into the adjustment groove, and is fixedly connected with the first square block; a limiting rope is connected between the first insertion rod and the adjustment plate.

2. The dispensing machine for sealing the display screen according to claim 1, wherein: The upper surface of the dispensing table is connected with a dispensing head through left and right arms and upper and lower arms; a convex block protrudes from the upper surface of the dispensing plate; the upper surface of the dispensing plate is communicated with the lower cavity through a first air hole; the orifice of the first air hole is arranged on the upper surface of the convex block; the number of the first air holes is two.

3. The dispensing machine for sealing the display screen according to claim 1, characterized in that: The upper surface of the dispensing plate is provided with an L-shaped corner groove; the L-shaped corner strip is slidably and sealedly connected in the L-shaped corner groove; the bottom of the L-shaped corner groove is communicated with the lower cavity through a second air hole.

4. The dispenser for sealing the display screen according to claim 3, characterized in that: A second spring is connected between the lower end of the L-shaped corner strip and the bottom of the L-shaped corner groove.

5. The dispenser for sealing the display screen according to claim 1, wherein: The adjustment plate is penetrated with air holes inside and outside.

6. The dispenser for sealing the display screen according to claim 1, wherein: An avoidance hole is arranged on the surface of the adjustment shell in contact with the adjustment plate; an elastic rope is connected between the bottom of the avoidance hole and the adjustment plate.

7. A display screen sealing and dispensing machine according to claim 2, wherein: A delay groove is arranged on the lower inner wall of the lower cavity; the first air hole is communicated with the bottom of the delay groove; a delay block is hermetically clamped in the delay groove; the upper surface of the delay block is connected with the lower surface of the air plate through a third spring.

8. The dispenser for sealing the display screen according to claim 7, wherein: A gas one-way valve is vertically penetrated through the delay block; the gas in the gas one-way valve can flow unidirectionally downward.

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