Efficient dispensing mechanism

Abstract

The utility model discloses an efficient glue dispensing mechanism which comprises a glue dispensing valve provided with a glue inlet and a glue outlet and a glue dispensing head communicated with the glue outlet of the glue dispensing valve, the glue dispensing valve comprises a glue inlet block, a piston rod extending vertically and a glue sealing head installed at the lower end of the piston rod, a sealing block is arranged above the glue inlet block, and the sealing block is arranged above the glue inlet block. An output shaft of a servo driving mechanism installed above the sealing block through a support is in transmission connection with the upper end of the piston rod, a glue guiding block is installed at the lower end of the glue feeding block, a base plate is horizontally arranged below the glue feeding block, and a driven gear is arranged on the outer side of the glue guiding block and located below the base plate in a sleeving mode. And a driving gear meshed with the driven gear is in transmission connection with an output shaft of the motor. According to the utility model, the glue sealing head is driven by the servo driving mechanism to move back and forth so as to realize glue opening and closing operation, and the glue opening and closing speed and sensitivity are improved, so that the precision of glue outlet quantity and the consistency of multiple glue outlet quantities are improved, and the glue dispensing direction can be quickly switched through the rotation of the glue dispensing head.

Description

Technical Field

[0001] This utility model relates to the field of dispensing technology, and in particular to a high-efficiency dispensing mechanism. Background Technology

[0002] A dispensing machine is an automated machine that controls the application of adhesive, dispensing or coating it onto the surface or grooves of a product. It typically uses a dedicated on / off valve to control the dispensing and stopping of the adhesive. Existing on / off valves use high-pressure gas to control the dispensing process; however, this method suffers from poor precision and sensitivity. When dispensing large volumes, the valve cannot quickly shut off, leading to adhesive overflow. Furthermore, the dispensing direction relies entirely on the machine's overall drive mechanism, impacting dispensing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-efficiency dispensing mechanism. This high-efficiency dispensing mechanism can improve the speed and sensitivity of dispensing, thereby improving the accuracy of dispensing volume and the consistency of dispensing volume in multiple applications. It can also realize the rapid switching of dispensing direction, thereby improving the continuity and efficiency of dispensing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-efficiency dispensing mechanism, comprising: a dispensing valve having an inlet and an outlet, and a dispensing head communicating with the outlet of the dispensing valve. The dispensing valve includes: an inlet block, a vertically extending piston rod, and a sealing head installed at the lower end of the piston rod. One end of an inlet channel opened on the inlet block is an inlet located on the side wall of the inlet block, and the other end of the horizontally extending inlet channel is connected to the upper end of an upper guide hole opened in the inlet block and extending vertically. A sealing block is provided above the inlet block. A sealing assembly is provided between the outer surface of the piston rod, whose upper end passes through the sealing block, and the inner wall of the mounting hole opened on the sealing block. The output shaft of a servo drive mechanism mounted above the sealing block via a bracket is connected to the upper end of the piston rod for driving the piston rod to move in the vertical direction.

[0005] A guide block is installed at the lower end of the glue inlet block. A lower guide hole is opened on the vertically extending guide block, the upper end of which communicates with the lower end of the upper guide hole. The lower end of the lower guide hole extends to the lower end face of the guide block to form a glue outlet. The sealing part of the sealing head is located below the glue outlet. The connecting rod part of the sealing head extends upward into the lower guide hole and connects with the piston rod. The outer surfaces of the piston rod and the connecting rod part of the sealing head, which pass through the upper guide hole and the lower guide hole in sequence, form a guide flow channel connecting the glue inlet and the glue outlet between the inner walls of the upper guide hole and the lower guide hole. When the sealing head moves to a high position with the piston rod, its sealing part seals with the glue outlet. When the sealing head moves to a low position with the piston rod, a glue outlet gap is formed between its sealing part and the glue outlet.

[0006] A base plate is horizontally arranged below the glue inlet block. The glue guide block, whose upper end is sealed to the glue inlet block, is rotatably mounted on the base plate through a bearing. A motor is mounted on the upper surface of the base plate and on one side of the glue inlet block. A driven gear is fitted on the outer side of the glue guide block and below the base plate. The driving gear meshing with the driven gear is connected to the output shaft of the motor.

[0007] The following are further improvements to the above technical solution:

[0008] 1. In the above scheme, a guide tube is provided inside the upper guide hole and the lower guide hole and on the outside of the connecting rod of the piston rod and the sealing head. The outer walls of the upper and lower ends of the guide tube are connected to the glue inlet block and the guide block respectively through sealing rings.

[0009] 2. In the above scheme, the adhesive channel is formed between the inner wall of the adhesive tube and the connecting rod of the piston rod and the sealing head, and the inner wall of the lower end of the adhesive tube has a radially inward flange, and the adhesive outlet is formed on the inner side of the flange.

[0010] 3. In the above scheme, the guide tube is a metal guide tube.

[0011] 4. In the above scheme, a mounting groove is formed on the lower surface of the glue inlet block and outside the upper glue guide hole. The upper end of the glue guide block is embedded in this mounting groove and is rotatably sealed to the inner wall of the mounting groove through a sealing ring.

[0012] 5. In the above scheme, the glue injection block is installed on the upper surface of the substrate, the motor is installed on the upper surface of the substrate through a support base, and the lower end of the motor output shaft is connected to a rotating shaft through a coupling. The lower end of the rotating shaft passes through the substrate and is equipped with the drive gear.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] This utility model relates to a high-efficiency dispensing mechanism. A sealing block is positioned above the dispensing block. A sealing assembly is installed between the outer surface of a piston rod, whose upper end passes through the sealing block, and the inner wall of a mounting hole on the sealing block. The output shaft of a servo drive mechanism, mounted above the sealing block via a bracket, is connected to the upper end of the piston rod, driving the piston rod to move vertically. A guide block is installed at the lower end of the dispensing block. A lower guide hole, whose upper end communicates with the lower end of an upper guide hole, is formed on the vertically extending guide block. The lower end of the lower guide hole extends to the lower end face of the guide block, forming a dispensing outlet. The sealing part of a sealing head is located below the dispensing outlet. The connecting rod of the sealing head extends upward into the lower guide hole and connects to the piston rod. The outer surfaces of the piston rod, which sequentially passes through the upper guide hole and the lower guide hole, and the connecting rod of the sealing head, respectively, are connected to the outer surfaces of the upper guide hole and the lower guide hole. A glue-guiding channel is formed between the inner walls of the lower glue guide hole, connecting the glue inlet and the glue outlet. A servo drive mechanism converts the rotational motion into linear motion, driving the sealing head to reciprocate and realize the glue switching operation, improving the speed and sensitivity of glue switching, thereby improving the accuracy of glue dispensing and the consistency of glue dispensing multiple times. In addition, a base plate is horizontally arranged below the glue inlet block. The glue guide block, which is sealed to the glue inlet block at its upper end, is rotatably mounted on the base plate through a bearing. A motor is installed on the upper surface of the base plate and on one side of the glue inlet block. A driven gear is fitted on the outer side of the glue guide block and below the base plate. The driving gear meshing with the driven gear is connected to the output shaft of the motor. While realizing the switching between continuous glue supply and stop glue supply to the dispensing head, the dispensing direction can be quickly switched by rotating the dispensing head, improving the continuity and efficiency of dispensing. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the overall structure of the high-efficiency dispensing mechanism of this utility model;

[0016] Appendix Figure 2 For the appendix Figure 1 Enlarged view of point A in the middle;

[0017] Appendix Figure 3 For the appendix Figure 1 A schematic cross-sectional view of the middle BB;

[0018] Appendix Figure 4 For the appendix Figure 3 Enlarged diagram of point C in the middle.

[0019] Appendix Figure 5 This is a partial structural diagram of the high-efficiency dispensing mechanism of this utility model.

[0020] In the attached diagrams: 1. Bracket; 2. Inlet block; 201. Upper guide hole; 202. Mounting groove; 3. Piston rod; 4. Sealing head; 41. Sealing part; 42. Connecting rod part; 51. Inlet; 52. Outlet; 61. Inlet channel; 62. Guide channel; 7. Sealing block; 71. Mounting hole; 72. Sealing assembly; 8. Servo drive mechanism; 9. Guide block; 91. Lower guide hole; 92. Sealing ring; 10. Guide tube; 11. Flange part; 12. Support base; 13. Coupling; 14. Rotating shaft; 15. Sensing plate; 16. Sensor; 17. Bearing; 18. Base plate; 191. Driven gear; 192. Driven gear; 20. Motor. Detailed Implementation

[0021] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0022] Example 1: A high-efficiency dispensing mechanism includes: a dispensing valve with an inlet 51 and an outlet 52, and a dispensing head communicating with the outlet 52 of the dispensing valve. The dispensing valve includes: an inlet block 2, a vertically extending piston rod 3, and a sealing head 4 installed at the lower end of the piston rod 3. An inlet channel 61 opened on the inlet block 2 has one end as an inlet 51 located on the side wall of the inlet block 2, and the other end of the horizontally extending inlet channel 61 communicates with the upper end of an upper guide hole 201 opened in the inlet block 2 and extending vertically. A sealing block 7 is provided above the inlet block 2. A sealing assembly 72 is provided between the outer surface of the piston rod 3, which passes through the sealing block 7, and the inner wall of the mounting hole 71 opened on the sealing block 7. The output shaft of a servo drive mechanism 8, which is mounted above the sealing block 7 via a bracket 1, is connected to the upper end of the piston rod 3 for driving the piston rod 3 to move in the vertical direction.

[0023] A guide block 9 is installed at the lower end of the glue inlet block 2. A lower guide hole 91 is formed on the vertically extending guide block 9, the upper end of which communicates with the lower end of the upper guide hole 201. The lower end of the lower guide hole 91 extends to the lower end face of the guide block 9 to form a glue outlet 52. The sealing part 41 of the sealing head 4 is located below the glue outlet 52. The connecting rod part 42 of the sealing head 4 extends upward into the lower guide hole 91 and connects with the piston rod 3, and then passes through the upper guide hole in sequence. 201. The outer surfaces of the piston rod 3 of the lower guide hole 91 and the connecting rod portion 42 of the sealing head 4 respectively form a guide flow channel 62 connecting the glue inlet 51 and the glue outlet 52 between the inner walls of the upper guide hole 201 and the lower guide hole 91. When the sealing head 4 moves to the high position with the piston rod 3, its sealing portion 41 seals with the glue outlet 52. When the sealing head 4 moves to the low position with the piston rod 3, a glue outlet gap is formed between its sealing portion 41 and the glue outlet 52.

[0024] A base plate 18 is horizontally arranged below the glue inlet block 2. The glue guide block 9, whose upper end is sealed to the glue inlet block 2, is rotatably mounted on the base plate 18 through a bearing 17. A motor 20 is mounted on the upper surface of the base plate 18 and on one side of the glue inlet block 2. A driven gear 191 is fitted on the outer side of the glue guide block 9 and below the base plate 18. The driving gear 192 that meshes with the driven gear 191 is connected to the output shaft of the motor 20.

[0025] A guide tube 10 is provided inside the upper guide hole 201 and the lower guide hole 91 and outside the connecting rod portion 42 of the piston rod 3 and the sealing head 4. The outer walls of the upper and lower ends of the guide tube 10 are connected to the glue inlet block 2 and the guide block 9 respectively through sealing rings.

[0026] The aforementioned adhesive channel 62 is formed between the inner wall of the adhesive tube 10 and the connecting rod portion 42 of the piston rod 3 and the sealing head 4. The inner wall of the lower end of the adhesive tube 10 has a radially inward flange portion 11, and the adhesive outlet 52 is formed on the inner side of the flange portion 11.

[0027] The aforementioned adhesive guide tube 10 is a metal adhesive guide tube; an installation groove 202 is provided on the lower surface of the aforementioned adhesive inlet block 2 and outside the upper adhesive guide hole 201. The upper end of the adhesive guide block 9 is embedded in this installation groove 202 and is rotatably and sealingly fitted with the inner wall of the installation groove 202 through a sealing ring 92.

[0028] Example 2: A high-efficiency dispensing mechanism, comprising: a dispensing valve having an inlet 51 and an outlet 52, and a dispensing head communicating with the outlet 52 of the dispensing valve. The dispensing valve includes: an inlet block 2, a vertically extending piston rod 3, and a sealing head 4 installed at the lower end of the piston rod 3. An inlet channel 61 opened on the inlet block 2 has one end being an inlet 51 located on the side wall of the inlet block 2, and the other end of the horizontally extending inlet channel 61 communicating with the upper end of an upper guide hole 201 opened in the inlet block 2 and extending vertically. A sealing block 7 is provided above the inlet block 2. A sealing assembly 72 is provided between the outer surface of the piston rod 3, which passes through the sealing block 7, and the inner wall of the mounting hole 71 opened on the sealing block 7. The output shaft of a servo drive mechanism 8, which is mounted above the sealing block 7 via a bracket 1, is connected to the upper end of the piston rod 3 for driving the piston rod 3 to move in the vertical direction.

[0029] A guide block 9 is installed at the lower end of the glue inlet block 2. A lower guide hole 91 is formed on the vertically extending guide block 9, the upper end of which communicates with the lower end of the upper guide hole 201. The lower end of the lower guide hole 91 extends to the lower end face of the guide block 9 to form a glue outlet 52. The sealing part 41 of the sealing head 4 is located below the glue outlet 52. The connecting rod part 42 of the sealing head 4 extends upward into the lower guide hole 91 and connects with the piston rod 3, and then passes through the upper guide hole in sequence. 201. The outer surfaces of the piston rod 3 of the lower guide hole 91 and the connecting rod portion 42 of the sealing head 4 respectively form a guide flow channel 62 connecting the glue inlet 51 and the glue outlet 52 between the inner walls of the upper guide hole 201 and the lower guide hole 91. When the sealing head 4 moves to the high position with the piston rod 3, its sealing portion 41 seals with the glue outlet 52. When the sealing head 4 moves to the low position with the piston rod 3, a glue outlet gap is formed between its sealing portion 41 and the glue outlet 52.

[0030] A base plate 18 is horizontally arranged below the glue inlet block 2. The glue guide block 9, whose upper end is sealed to the glue inlet block 2, is rotatably mounted on the base plate 18 through a bearing 17. A motor 20 is mounted on the upper surface of the base plate 18 and on one side of the glue inlet block 2. A driven gear 191 is fitted on the outer side of the glue guide block 9 and below the base plate 18. The driving gear 192 that meshes with the driven gear 191 is connected to the output shaft of the motor 20.

[0031] An installation groove 202 is provided on the lower surface of the aforementioned glue inlet block 2, located outside the upper glue guide hole 201. The upper end of the glue guide block 9 is embedded in this installation groove 202 and is rotatably sealed to the inner wall of the installation groove 202 through a sealing ring 92.

[0032] The aforementioned glue injection block 2 is mounted on the upper surface of the substrate 18. The motor 20 is mounted on the upper surface of the substrate 18 via a support base 12. The lower end of the output shaft of the motor 20 is connected to a rotating shaft 14 via a coupling 13. The lower end of the rotating shaft 14 passes through the substrate 18 and is equipped with the drive gear 192.

[0033] The aforementioned rotating shaft 14 is rotatably connected to the support base 12 or the base plate 18 via a bearing; a sensing plate 15 that can rotate with it is mounted on the aforementioned rotating shaft 14, and at least one sensor 16 that cooperates with the sensing plate 15 is mounted on the support base 12; the diameter ratio of the aforementioned driven gear 191 to the driving gear 192 is 2, and two sensors 16 are provided and spaced 180° apart in the circumferential direction.

[0034] The working principle of this utility model is as follows:

[0035] The dispensing mechanism is mounted on a three-axis drive mechanism and is used to dispense adhesive at the edges of rectangular photovoltaic glass. The adhesive is injected into the dispensing valve from the inlet through an external adhesive supply unit, such as a pressure plate pump.

[0036] The photovoltaic glass to be glued is placed horizontally under the glue dispensing head. Under the action of the three-axis drive mechanism, the glue dispensing head is first moved to a suitable height at a corner of the photovoltaic glass. Then, the three-axis drive mechanism drives the glue dispensing head to move along the length of one side of the photovoltaic glass. At the same time, the glue dispensing valve is opened to form a glue dispensing gap between the sealing part of the glue head and the glue outlet, thereby realizing the glue dispensing operation on one edge of the photovoltaic glass.

[0037] Next, the driven gear meshing with the driving gear is rotated by the rotation of the motor, causing the dispensing head to rotate 90°. During this process, the dispensing gap is closed.

[0038] Then, the dispensing head is driven by the three-axis drive mechanism to move along the length of the other side of the photovoltaic glass that is perpendicular to the side that has been dispensed, and at the same time the dispensing valve is opened to dispensing the glue, thereby realizing the dispensing operation on the other edge of the photovoltaic glass.

[0039] This process is repeated to achieve continuous dispensing of adhesive around the edges of the photovoltaic glass, improving the continuity and efficiency of dispensing. During the process, a servo drive mechanism converts the rotary motion into linear motion to drive the sealing head to move back and forth, thereby opening and closing the dispensing gap, improving the speed and sensitivity of dispensing, and thus improving the accuracy of dispensing amount and the consistency of dispensing amounts in multiple applications.

[0040] When using the above-mentioned high-efficiency dispensing mechanism, the rotary motion is converted into linear motion through the servo drive mechanism to drive the dispensing head to reciprocate and realize the dispensing operation, thereby improving the speed and sensitivity of dispensing, and thus improving the accuracy of dispensing volume and the consistency of dispensing volume in multiple applications; in addition, while realizing the switching between continuous dispensing and stopping dispensing to the dispensing head, the dispensing direction can be quickly switched by rotating the dispensing head, thereby improving the continuity and efficiency of dispensing.

[0041] 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-efficiency dispensing mechanism, comprising: A dispensing valve having an inlet (51) and an outlet (52) and a dispensing head communicating with the outlet (52) of the dispensing valve, the dispensing valve comprising: an inlet block (2), a vertically extending piston rod (3) and a sealing head (4) installed at the lower end of the piston rod (3), an inlet channel (61) opened on the inlet block (2) having one end as an inlet (51) located on the side wall of the inlet block (2), and the other end of the horizontally extending inlet channel (61) connecting to an upper guide tube opened inside the inlet block (2) and extending vertically. The upper end of the glue hole (201) is connected, characterized in that: a sealing block (7) is provided above the glue inlet block (2), a sealing assembly (72) is provided between the outer surface of the piston rod (3) that passes through the sealing block (7) and the inner wall of the mounting hole (71) opened on the sealing block (7), and the output shaft of a servo drive mechanism (8) installed above the sealing block (7) through a bracket (1) is connected to the upper end of the piston rod (3) for driving the piston rod (3) to move in the vertical direction; A guide block (9) is installed at the lower end of the glue inlet block (2). A lower guide hole (91) is opened on the vertically extending guide block (9), the upper end of which is connected to the lower end of the upper guide hole (201). The lower end of the lower guide hole (91) extends to the lower end face of the guide block (9) to form a glue outlet (52). The sealing part (41) of the sealing head (4) is located below the glue outlet (52). The connecting rod part (42) of the sealing head (4) extends upward into the lower guide hole (91) and connects with the piston rod (3), and sequentially passes through the upper guide hole (201). 1) The outer surfaces of the piston rod (3) of the lower guide hole (91) and the connecting rod (42) of the sealing head (4) respectively form a guide flow channel (62) connecting the glue inlet (51) and the glue outlet (52) between the upper guide hole (201) and the inner wall of the lower guide hole (91). When the sealing head (4) moves to the high position with the piston rod (3), its sealing part (41) seals with the glue outlet (52). When the sealing head (4) moves to the low position with the piston rod (3), a glue outlet gap is formed between its sealing part (41) and the glue outlet (52). A base plate (18) is horizontally arranged below the glue inlet block (2). The guide block (9), whose upper end is sealed to the glue inlet block (2), is rotatably mounted on the base plate (18) through a bearing (17). A motor (20) is mounted on the upper surface of the base plate (18) and on one side of the glue inlet block (2). A driven gear (191) is fitted on the outside of the guide block (9) and below the base plate (18). The driving gear (192) meshing with the driven gear (191) is connected to the output shaft of the motor (20).

2. The efficient dispensing mechanism of claim 1, wherein: A guide tube (10) is provided inside the upper guide hole (201) and the lower guide hole (91) and outside the connecting rod part (42) of the piston rod (3) and the sealing head (4). The outer walls of the upper and lower ends of the guide tube (10) are connected to the glue inlet block (2) and the guide block (9) respectively through sealing rings.

3. The high efficiency dispensing mechanism of claim 2, wherein: The glue guide flow channel (62) is formed between the inner wall of the glue guide pipe (10) and the connecting rod part (42) of the piston rod (3) and the glue sealing head (4), the inner wall of the lower end of the glue guide pipe (10) is provided with a flange part (11) radially inward, and the glue outlet (52) is formed on the inner side of the flange part (11).

4. The high efficiency dispensing mechanism of claim 2, wherein: The glue guide pipe (10) is a metal glue guide pipe.

5. The efficient dispensing mechanism of claim 1, wherein: A mounting groove (202) is formed on the lower surface of the glue feeding block (2) and outside the upper glue guide hole (201), the upper end of the glue guide block (9) is embedded in the mounting groove (202) and is rotatably sealed with the inner wall of the mounting groove (202) through a sealing ring (92).

6. The high efficiency dispensing mechanism of claim 1 or 5, wherein: The glue feeding block (2) is mounted on the upper surface of the base plate (18), the motor (20) is mounted on the upper surface of the base plate (18) through a support seat (12), the lower end of the output shaft of the motor (20) is connected with a rotating shaft (14) through a shaft coupling (13), and the lower end of the rotating shaft (14) is provided with the driving gear (192) penetrating through the base plate (18).

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