Automatic glue dispensing device for efficient glue wiping

Abstract

The utility model discloses an automatic glue dispensing device for efficient glue wiping, comprising: a glue dispensing valve, a nozzle installed at the lower end of the glue dispensing valve, a bottom base plate, an unwinding shaft and a rewinding shaft, a cloth roll forms a glue wiping cloth section between the unwinding shaft and the rewinding shaft, a rotating disk and a baffle located on the side of the rotating disk opposite to the first vertical plate are mounted on the outer side of the unwinding shaft, a nut is mounted on the other end of the unwinding shaft, a spring is mounted on the outer side of the unwinding shaft, a metal disk is mounted on the outer side of the rewinding shaft, a sensing protrusion is arranged at the edge of the metal disk, and a sensor matched with the sensing protrusion is mounted on the second vertical plate. The utility model can prevent the cloth roll from rotating itself, and can also prevent the rotating disk from being subjected to force during the process and generating unnecessary rotation, thereby improving the position accuracy and stability of the glue wiping cloth section, and can also ensure the consistency of the moving distance of the glue wiping cloth section each time, and avoid the waste of cloth sections while ensuring sufficient wiping.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing, in particular to an automatic glue dispensing device for efficient glue wiping. Background Art

[0002] Gluing is usually done by spraying or applying glue, solvents or other liquids onto products using a fully rubbed glue dispensing device to seal, fix, protect, etc. In the prior art, when using a fully rubbed glue dispensing device, it is usually necessary to wipe and clean the glue nozzle to avoid glue blockage, glue overflow, glue hanging, etc. However, the cloth roll is prone to self-rotation, and the rotating disk is prone to unnecessary rotation, which reduces the stability of the glue wiping, and cannot ensure that the residual glue is fully wiped, which easily causes waste of cloth segments and affects processing efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automatic glue dispensing device for efficient glue erasing, which can prevent the cloth roll from rotating itself and avoid unnecessary rotation of the rotating disk due to force during the process, thereby improving the position accuracy and stability of the glue erasing cloth segment, and can also ensure the consistency of the moving distance of the glue erasing cloth segment each time, thereby ensuring sufficient wiping and avoiding waste of cloth segments.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic glue dispensing device with high efficiency of wiping glue, comprising: an X-axis driving unit installed on a frame, a Z-axis driving unit installed on a movable part of the X-axis driving unit through a supporting plate, and a glue dispensing valve with a nozzle, the glue valve being installed on the movable part of the Z-axis driving unit through a connecting plate, a glue wiping assembly being arranged on the frame and below the glue dispensing valve, the glue wiping assembly further comprising: a bottom base plate, a unwinding shaft and a rewinding shaft, one end of each of the unwinding shaft and the rewinding shaft being respectively installed on the same side of the first vertical plate and the second vertical plate, the first vertical plate and the second vertical plate being both installed on the upper surface of the bottom base plate, a cloth roll being mounted on the unwinding shaft, the end of the cloth roll away from the unwinding shaft being wound around the rewinding shaft, thereby forming a glue wiping cloth section for frictionally contacting with the lower surface of the nozzle between the new cloth roll section on the unwinding shaft and the waste cloth roll section wound around the rewinding shaft;

[0005] One end of the unwinding shaft is fixedly mounted on the first vertical plate, a rotating disk and a baffle located on the side of the rotating disk opposite to the first vertical plate are mounted on the outside of the unwinding shaft, the cloth roll mounted on the unwinding shaft is located between the rotating disk and the baffle, a nut is mounted on the other end of the unwinding shaft, a spring in an extruded state is mounted on the outside of the unwinding shaft and is located between the nut and the baffle, a pad is mounted on the side of the first vertical plate facing the rotating disk, the surface of the pad opposite to the first vertical plate is in frictional contact with the side surface of the rotating disk opposite to the cloth roll;

[0006] A motor is installed on the side of the second vertical plate opposite to the winding shaft, and the output shaft of the motor passes through the second vertical plate and is connected to the winding shaft. The end of the winding shaft connected to the output shaft of the motor is rotatably installed on the second vertical plate through at least one bearing. A metal disk that can rotate with the winding shaft is mounted on the outside of the winding shaft, and a plurality of sensing protrusions that are equally spaced along the circumferential direction are provided at the edge of the metal disk. An inductor that cooperates with the sensing protrusion is installed on the second vertical plate, and the inductor is electrically connected to the motor.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above solution, a second baffle is mounted on the winding shaft and located on the side of the waste cloth roll section opposite to the second vertical plate.

[0009] 2. In the above solution, the nut is a butterfly nut.

[0010] 3. In the above solution, the center of the rotating disk has an annular protrusion extending axially toward the baffle disk, and the cloth roll is sleeved on the outside of the annular protrusion.

[0011] 4. In the above scheme, the Z-axis driving unit further includes: a Z-axis housing and a Z-axis screw arranged inside the Z-axis housing, one end of the Z-axis screw is connected to the output shaft of a Z-axis motor, and the Z-axis movable part of the Z-axis driving unit is sleeved on the Z-axis screw.

[0012] 5. In the above solution, one end of the Z-axis active part of the Z-axis driving unit is connected to one side surface of the connecting plate, and the side surface of the connecting plate opposite to the Z-axis active part is connected to the dispensing valve.

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

[0014] The utility model discloses an automatic glue dispensing device for efficient glue wiping, one end of which is fixedly mounted on the first vertical plate, and a rotating disk and a baffle plate are mounted on the outer side of the unwinding rotating shaft, and the cloth roll mounted on the unwinding rotating shaft is located between the rotating disk and the baffle plate, and a nut is mounted on the other end of the unwinding rotating shaft, and a spring in an extrusion state is mounted on the outer side of the unwinding rotating shaft and is located between the nut and the baffle plate, and a pad is mounted on the side of the first vertical plate facing the rotating disk. The surface of the pad is opposite to the first vertical plate and is in frictional contact with the side surface of the rotating disk opposite to the cloth roll. The spring can not only squeeze and clamp the cloth roll between the rotating disk and the baffle plate to prevent the cloth roll from rotating itself, but also increase the extrusion force between the rotating disk and the pad plate, thereby increasing the friction resistance of the rotating disk, and avoiding unnecessary rotation of the rotating disk caused by the force applied to the rotating disk during the up and down movement of the movable block. The cam is connected to the second plate by a toothed wheel and the toothed wheel is moved along the guide rail to move the cam, thereby improving the position accuracy and stability of the wiping cloth segment, thereby improving the stability of the wiping cloth; further, a motor is installed on the side of the second vertical plate opposite to the winding shaft, the output shaft of the motor passes through the second vertical plate and is connected to the winding shaft, and one end of the winding shaft connected to the output shaft of the motor is rotatably installed on the second vertical plate through at least one bearing, and a metal disk that can rotate with it is set on the outer side of the winding shaft, and a plurality of sensing protrusions that are arranged at equal intervals along the circumferential direction are arranged at the edge of the metal disk, and a sensor that cooperates with the sensing protrusion is installed on the second vertical plate, and the sensor is electrically connected to the motor, which can ensure the consistency of the waste cloth winding distance, that is, the moving distance of the wiping cloth segment after each wiping of the glue is completed, thereby ensuring that the new cloth segment fully wipes the residual glue on the nozzle, and avoiding the waste of unused new cloth segments being wound onto the winding shaft, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 This is a schematic diagram of the structure of the automatic glue dispensing device for efficient glue erasing of the utility model;

[0016] Attached Figure 2 For attachment Figure 1 The enlarged schematic diagram of point A in the middle;

[0017] Attached Figure 3 This is a schematic diagram of the partial structure of the automatic glue dispensing device for efficient glue erasing of the utility model;

[0018] Attached Figure 4 The local structure of the automatic glue dispensing device for efficient glue erasing of the utility model is shown in FIG. Figure 1 ;

[0019] Attached Figure 5 The local structure of the automatic glue dispensing device for efficient glue erasing of the utility model is shown in FIG. Figure 2 ;

[0020] Attached Figure 6 For attachment Figure 5 Schematic diagram of the cross section along BB;

[0021] Attached Figure 7 The utility model is a schematic diagram of the partial structure of the automatic glue dispensing device for high-efficiency glue erasing.

[0022] In the above drawings: 100, cloth roll; 101, new cloth roll section; 102, waste cloth roll section; 103, eraser cloth section; 200, dispensing valve; 201, nozzle; 300, Z-axis drive unit; 301, Z-axis housing; 302, Z-axis screw; 303, Z-axis motor; 304, Z-axis movable part; 400, connecting plate; 500, X-axis drive unit; 501, X-axis housing; 502, X-axis screw; 503, bearing seat; 504, X-axis movable part; 505, X-axis motor; 600, X-axis movable block; 700, mounting plate; 1, bottom base plate; 2, unwinding shaft; 3, winding shaft; 41, first vertical plate; 42, second vertical plate; 5, nut; 6. Spring; 7. Pad; 8. Motor; 9. Metal plate; 91. Inductive protrusion; 10. Sensor; 11. Second baffle plate; 13. Rotating plate; 131. Annular protrusion; 14. Baffle plate. DETAILED DESCRIPTION

[0023] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0024] Embodiment 1: An automatic glue dispensing device with high efficiency glue erasing includes: an X-axis driving unit 500 mounted on a frame, a Z-axis driving unit 300 mounted on a movable part of the X-axis driving unit 500 through a support plate 600, and a glue dispensing valve 200 having a nozzle 201, wherein the glue dispensing valve 200 is mounted on the movable part of the Z-axis driving unit 300 through a connecting plate 400, and a glue erasing assembly is arranged on the frame and below the glue dispensing valve 200, and the glue erasing assembly further includes: a bottom substrate 1, a reeling shaft 2, and a reeling shaft 3, one end of each of the unwinding shaft 2 and the winding shaft 3 is mounted on the same side of the first vertical plate 41 and the second vertical plate 42, the first vertical plate 41 and the second vertical plate 42 are mounted on the upper surface of the bottom base plate 1, a cloth roll 100 is mounted on the unwinding shaft 2, and one end of the cloth roll 100 away from the unwinding shaft 2 is wound around the winding shaft 3, so that a rubber cloth segment 103 for frictionally contacting with the lower surface of the nozzle 201 is formed between the new cloth roll segment 101 on the unwinding shaft 2 and the waste cloth roll segment 102 wound around the winding shaft 3;

[0025] One end of the unwinding shaft 2 is fixedly mounted on the first vertical plate 41, a rotating disk 13 and a baffle 14 located on the side of the rotating disk 13 opposite to the first vertical plate 41 are mounted on the outer side of the unwinding shaft 2, the cloth roll 100 mounted on the unwinding shaft 2 is located between the rotating disk 13 and the baffle 14, a nut 5 is mounted on the other end of the unwinding shaft 2, a spring 6 in a squeezed state is mounted on the outer side of the unwinding shaft 2 and is located between the nut 5 and the baffle 14, a pad 7 is mounted on the side of the first vertical plate 41 facing the rotating disk 13, the surface of the pad 7 opposite to the first vertical plate 41 is in frictional contact with the side surface of the rotating disk 13 opposite to the cloth roll 100;

[0026] A motor 8 is installed on the side of the second vertical plate 42 opposite to the winding shaft 3, and the output shaft of the motor 8 passes through the second vertical plate 42 and is connected to the winding shaft 3. The end of the winding shaft 3 connected to the output shaft of the motor 8 is rotatably installed on the second vertical plate 42 through at least one bearing. A metal disk 9 that can rotate with the winding shaft 3 is mounted on the outer side of the winding shaft 3. A plurality of sensing protrusions 91 are arranged at equal intervals along the circumferential direction at the edge of the metal disk 9. An inductor 10 that cooperates with the sensing protrusion 91 is installed on the second vertical plate 42, and the inductor 10 is electrically connected to the motor 8.

[0027] After one wiping is completed, the driving unit again drives the dispensing valve away from the wiping cloth segment, and then the motor drives the reel-up shaft to rotate to reel up the cloth segment that has been wiped with residual glue, thereby driving the cloth roll on the unwinding shaft to rotate to provide a new wiping cloth segment, and the start and stop of the motor are controlled by the cooperation between the sensor and the sensing protrusion on the metal disk, so as to ensure the consistency of the waste cloth reeling distance, that is, the moving distance of the wiping cloth segment after each wiping is completed, thereby ensuring that the new cloth segment fully wipes the residual glue, and avoiding the waste of unused new cloth segments being reeled onto the reel-up shaft, thereby improving the processing efficiency.

[0028] A second baffle 11 is mounted on the winding shaft 3 and located on the side of the waste cloth roll section 102 opposite to the second vertical plate 42 .

[0029] The nut 5 is a butterfly nut.

[0030] The rotating disk 13 has an annular protrusion 131 in the center thereof, which extends axially toward the baffle 14 . The cloth roll 100 is sleeved on the outer side of the annular protrusion 131 .

[0031] The Z-axis driving unit 300 further comprises: a Z-axis housing 301 and a Z-axis screw 302 arranged inside the Z-axis housing 301 , one end of the Z-axis screw 302 is connected to the output shaft of a Z-axis motor 303 , and the Z-axis movable part 304 of the Z-axis driving unit 300 is sleeved on the Z-axis screw 302 .

[0032] One end of the Z-direction movable portion 304 of the Z-axis driving unit 300 is connected to a side surface of the connecting plate 400 , and a side surface of the connecting plate 400 opposite to the Z-direction movable portion 304 is connected to the dispensing valve 200 .

[0033] One side of the pad 7 is embedded in the first vertical plate 41 and connected to the first vertical plate 41 via bolts, and the surface of the other side of the pad 7 protrudes from the side surface of the first vertical plate 41 .

[0034] Embodiment 2: An automatic glue dispensing device with high efficiency glue erasing, comprising: an X-axis drive unit 500 mounted on a frame, a Z-axis drive unit 300 mounted on a movable part of the X-axis drive unit 500 through a support plate 600, and a glue dispensing valve 200 having a nozzle 201, wherein the glue dispensing valve 200 is mounted on the movable part of the Z-axis drive unit 300 through a connecting plate 400, and a glue erasing assembly is arranged on the frame and below the glue dispensing valve 200, and the glue erasing assembly further comprises: a bottom substrate 1, a reeling shaft 2, and a reeling shaft 3, one end of each of the unwinding shaft 2 and the winding shaft 3 is mounted on the same side of the first vertical plate 41 and the second vertical plate 42, the first vertical plate 41 and the second vertical plate 42 are mounted on the upper surface of the bottom base plate 1, a cloth roll 100 is mounted on the unwinding shaft 2, and one end of the cloth roll 100 away from the unwinding shaft 2 is wound around the winding shaft 3, so that a rubber cloth segment 103 for frictionally contacting with the lower surface of the nozzle 201 is formed between the new cloth roll segment 101 on the unwinding shaft 2 and the waste cloth roll segment 102 wound around the winding shaft 3;

[0035] Each time it is used, a new cloth roll is first installed on the unwinding shaft, and one end of the cloth roll is wound and fixed on the rewinding shaft;

[0036] Next, the dispensing valve to be wiped is moved to the top of the eraser cloth segment by the X-axis driving unit of the driving unit, and then the dispensing valve is driven by the Z-axis driving unit to move down until the nozzle contacts the upper surface of the eraser cloth segment, so that the residual glue on the nozzle can be wiped;

[0037] One end of the unwinding shaft 2 is fixedly mounted on the first vertical plate 41, a rotating disk 13 and a baffle 14 located on the side of the rotating disk 13 opposite to the first vertical plate 41 are mounted on the outer side of the unwinding shaft 2, the cloth roll 100 mounted on the unwinding shaft 2 is located between the rotating disk 13 and the baffle 14, a nut 5 is mounted on the other end of the unwinding shaft 2, a spring 6 in a squeezed state is mounted on the outer side of the unwinding shaft 2 and is located between the nut 5 and the baffle 14, a pad 7 is mounted on the side of the first vertical plate 41 facing the rotating disk 13, the surface of the pad 7 opposite to the first vertical plate 41 is in frictional contact with the side surface of the rotating disk 13 opposite to the cloth roll 100;

[0038] A motor 8 is installed on the side of the second vertical plate 42 opposite to the winding shaft 3, and the output shaft of the motor 8 passes through the second vertical plate 42 and is connected to the winding shaft 3. The end of the winding shaft 3 connected to the output shaft of the motor 8 is rotatably installed on the second vertical plate 42 through at least one bearing. A metal disk 9 that can rotate with the winding shaft is mounted on the outer side of the winding shaft 3, and a plurality of sensing protrusions 91 are arranged at equal intervals along the circumferential direction at the edge of the metal disk 9. An inductor 10 that cooperates with the sensing protrusion 91 is installed on the second vertical plate 42, and the inductor 10 is electrically connected to the motor 8.

[0039] A second baffle 11 is mounted on the winding shaft 3 and located on the side of the waste cloth roll section 102 opposite to the second vertical plate 42 .

[0040] The nut 5 is a butterfly nut.

[0041] One side of the pad 7 is embedded in the first vertical plate 41 and connected to the first vertical plate 41 via bolts, and the surface of the other side of the pad 7 protrudes from the side surface of the first vertical plate 41 .

[0042] The bottoms of the first vertical plate 41 and the second vertical plate 42 are fixedly connected to the bottom plate 1 by bolts.

[0043] The above-mentioned X-axis driving unit 500 further includes: an X-axis shell 501 and an X-axis screw 502 arranged inside the X-axis shell 501, the X-axis shell 501 is installed on a mounting plate 700, and at least one bearing seat 503 is installed on the upper surface of the mounting plate 700. The other end of the X-axis screw 502, one end of which is rotatably connected to the bearing seat 503, is connected to an X-axis motor 505, and an X-axis movable part 504 is sleeved on the X-axis screw 502.

[0044] One end of the X-axis movable portion 504 of the X-axis driving unit 500 is connected to a side surface of the X-axis movable block 600 , and a side surface of the X-axis movable block 600 opposite to the X-axis movable portion 504 is connected to the Z-axis driving unit 300 .

[0045] The working principle of the utility model is as follows:

[0046] Each time it is used, a new cloth roll is first installed on the unwinding shaft, and one end of the cloth roll is wound and fixed on the rewinding shaft;

[0047] Next, the dispensing valve to be wiped is moved to the top of the eraser cloth segment by the X-axis driving unit of the driving unit, and then the dispensing valve is driven by the Z-axis driving unit to move down until the nozzle contacts the upper surface of the eraser cloth segment, so that the residual glue on the nozzle can be wiped;

[0048] After one wiping is completed, the drive unit again drives the glue dispensing valve away from the wiping cloth segment, and then the motor drives the reel-up shaft to rotate to reel up the cloth segment that has been wiped with residual glue, thereby driving the cloth roll on the unwinding shaft to rotate to provide a new wiping cloth segment, and the start and stop of the motor are controlled by the cooperation between the sensor and the sensing protrusion on the metal disk, so as to ensure the consistency of the waste cloth reeling distance, that is, the moving distance of the wiping cloth segment after each wiping is completed, thereby ensuring that the new cloth segment fully wipes the residual glue on the nozzle, and avoiding the waste of unused new cloth segments being reeled onto the reel-up shaft, thereby improving the processing efficiency.

[0049] When the above-mentioned automatic glue dispensing device for efficient glue wiping is adopted, the cloth roll can be squeezed and clamped between the rotating disk and the baffle plate through the spring to prevent the cloth roll from rotating itself, and the squeezing force between the rotating disk and the pad can be increased, thereby increasing the friction resistance of the rotating disk, avoiding unnecessary rotation of the rotating disk caused by the force applied to the rotating disk during the up and down movement of the movable block, thereby improving the position accuracy and stability of the glue wiping cloth segment, and thus improving the stability of the glue wiping; further, it can ensure the consistency of the waste cloth winding distance, that is, the moving distance of the glue wiping cloth segment after each glue wiping is completed, thereby ensuring that the new cloth segment fully wipes the residual glue on the nozzle, and avoiding the waste of unused new cloth segments being wound onto the winding shaft, thereby improving the processing efficiency.

[0050] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic glue dispensing device for efficient glue erasing, comprising: An X-axis drive unit (500) mounted on a frame, a Z-axis drive unit (300) mounted on a movable part of the X-axis drive unit (500) via a support plate (600), and a dispensing valve (200) having a nozzle (201), wherein the dispensing valve (200) is mounted on the movable part of the Z-axis drive unit (300) via a connecting plate (400), and a glue erasing assembly is provided on the frame and below the dispensing valve (200), wherein the glue erasing assembly further comprises: a bottom substrate (1), an unwinding shaft (2) and a rewinding shaft (3), wherein the unwinding shaft (2) and the rewinding shaft (3) are (3) one end of each is mounted on the same side of the first vertical plate (41) and the second vertical plate (42), the first vertical plate (41) and the second vertical plate (42) are both mounted on the upper surface of the bottom base plate (1), a cloth roll (100) is mounted on the unwinding shaft (2), and one end of the cloth roll (100) away from the unwinding shaft (2) is wound around the rewinding shaft (3), so that a rubber cloth section (103) for frictionally contacting the lower surface of the nozzle (201) is formed between the new cloth roll section (101) on the unwinding shaft (2) and the waste cloth roll section (102) wound around the rewinding shaft (3); The invention is characterized in that: one end of the unwinding shaft (2) is fixedly mounted on the first vertical plate (41); a rotating disk (13) and a baffle (14) are mounted on the outer side of the unwinding shaft (2) and are located on the side of the rotating disk (13) opposite to the first vertical plate (41); a cloth roll (100) mounted on the unwinding shaft (2) is located between the rotating disk (13) and the baffle (14); a nut (5) is mounted on the other end of the unwinding shaft (2); a spring (6) in a compression state is mounted on the outer side of the unwinding shaft (2) and is located between the nut (5) and the baffle (14); a pad (7) is mounted on the side of the first vertical plate (41) facing the rotating disk (13); a surface of the pad (7) opposite to the first vertical plate (41) is in frictional contact with a side surface of the rotating disk (13) opposite to the cloth roll (100); A motor (8) is installed on the side of the second vertical plate (42) opposite to the winding shaft (3); the output shaft of the motor (8) passes through the second vertical plate (42) and is connected to the winding shaft (3); one end of the winding shaft (3) connected to the output shaft of the motor (8) is rotatably installed on the second vertical plate (42) via at least one bearing; a metal disk (9) is mounted on the outer side of the winding shaft (3) and can rotate with the winding shaft; a plurality of sensing protrusions (91) are arranged at equal intervals along the circumferential direction at the edge of the metal disk (9); an inductor (10) cooperating with the sensing protrusion (91) is installed on the second vertical plate (42); and the inductor (10) is electrically connected to the motor (8).

2. The automatic glue dispensing device for high-efficiency glue erasing according to claim 1 is characterized in that: A second baffle (11) is mounted on the reeling shaft (3) and is located on the side of the waste cloth roll section (102) opposite to the second vertical plate (42).

3. The automatic glue dispensing device for high-efficiency glue erasing according to claim 1 is characterized in that: The nut (5) is a butterfly nut.

4. The automatic glue dispensing device for high-efficiency glue erasing according to claim 1 is characterized in that: The rotating disk (13) has an annular protrusion (131) at the center thereof, extending axially in the direction of the baffle disk (14), and the cloth roll (100) is sleeved on the outside of the annular protrusion (131).

5. The automatic glue dispensing device for high-efficiency glue erasing according to claim 1 is characterized by: The Z-axis driving unit (300) further comprises: a Z-axis housing (301) and a Z-axis screw (302) arranged inside the Z-axis housing (301), one end of the Z-axis screw (302) being connected to an output shaft of a Z-axis motor (303), and a Z-axis movable portion (304) of the Z-axis driving unit (300) being sleeved on the Z-axis screw (302).

6. The automatic glue dispensing device for high-efficiency glue erasing according to claim 5 is characterized by: One end of the Z-direction movable part (304) of the Z-axis driving unit (300) is connected to a side surface of the connecting plate (400), and a side surface of the connecting plate (400) opposite to the Z-direction movable part (304) is connected to the dispensing valve (200).

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