Machine head of filling machine

Abstract

The utility model belongs to the technical field of filling equipment, and particularly relates to a filling machine head which comprises a hollow machine head body, and a feeding pipe is arranged on the side wall of the machine head body in a communicated mode. The discharging pipe is arranged at the bottom of the machine head body and is used for filling materials; the flow control structure is movably arranged in the machine head body and used for controlling the flow speed of materials flowing into the machine head body from the feeding pipe; the wall scraping structure is arranged in the machine head body, and the wall scraping structure comprises a piston which is movably arranged in the machine head body and attached to the inner wall of the machine head body; the telescopic air cylinder is arranged above the machine head body, and an output shaft penetrates through the top of the machine head body to be connected with the top face of the piston. And the effects that the liquid dripping phenomenon is avoided, and waste of materials and pollution to equipment or the environment are avoided are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filling equipment, in particular to a filling machine head. Background Art

[0002] Filling machines are indispensable equipment in the modern packaging industry, used to accurately fill liquid, powder or granular substances into various containers. One of the core components of a filling machine is the head, which is responsible for directly contacting the material to be filled and accurately controlling the flow of the material into the container.

[0003] Chinese utility model patent CN217994945U discloses an automatic filling machine for fire retardant coatings, comprising: a filling head, and a sealing shell fixed in the filling head by a cross bar, a driving motor fixed in the sealing shell, an output shaft of the driving motor fixed with a rotating mounting sleeve forming a sealing structure with the sealing shell, a plurality of vibration rods directly in contact with the inner wall of the filling head fixed at the bottom of the rotating mounting sleeve, and the top ends of the plurality of vibration rods extend into the rotating mounting sleeve; a second driving cylinder is also fixed in the rotating mounting sleeve, and an impact plate located above the top end of the vibration rod is fixed to the end of the piston rod of the second driving cylinder.

[0004] Among them, the material is filtered through the mesh cover and then poured into the container. After the filling is completed, paint is likely to remain on the mesh cover. During the process of replacing the storage container, paint is likely to drip, causing the filling environment or the outer surface of the container to be contaminated. Utility Model Content

[0005] The purpose of the utility model is to provide a filling machine head in view of the above-mentioned technical problems, so as to avoid the phenomenon of liquid dripping, avoid the waste of materials and the pollution to equipment or the environment.

[0006] In view of this, the utility model provides a filling machine head, characterized in that it includes:

[0007] The die body is hollow and a feed pipe is connected to the side wall of the die body;

[0008] A discharge pipe, which is arranged at the bottom of the machine head body and is used for filling materials;

[0009] A flow control structure, the flow control structure is movably arranged inside the die body to control the flow rate of the material flowing from the feed pipe to the die body;

[0010] The wall scraping structure is arranged inside the head body, and the wall scraping structure includes:

[0011] A piston, the piston is movably disposed inside the handpiece body and is in contact with the inner wall of the handpiece body;

[0012] The telescopic cylinder is arranged above the machine head body, and the output shaft passes through the top of the machine head body and is connected with the top surface of the piston.

[0013] In the present technical scheme, the material is transported from the feed pipe to the inside of the machine head body, and then filled into the container through the discharge pipe. During the filling process, the flow control structure is set to control the flow of the material input into the machine head body through the feed pipe, and when the material filling in the container is about to reach the requirement, the flow control structure can block the feed pipe to prohibit the material in the feed pipe from flowing into the machine head body. The piston is pushed downward by the telescopic cylinder to squeeze the material remaining on the inner wall of the machine head body from the discharge pipe into the container, so that no material will remain on the inner wall of the machine head body, which is beneficial to avoid the phenomenon of material dripping from the bottom of the head body when changing the container, and is beneficial to improving the hygiene of the processing environment and the utilization rate of materials.

[0014] In the above technical solution, further, the flow control structure includes:

[0015] A sliding groove, wherein the sliding groove is arranged inside the handpiece body, and the inner diameter of the sliding groove is larger than the inner diameter of the handpiece body;

[0016] A sliding member, wherein the sliding member is disposed in the sliding groove, and an outer wall of the sliding member is in contact with a surface of the sliding groove;

[0017] An accommodating chamber, wherein the accommodating chamber is arranged on the bottom surface of the sliding member, and the piston is slidably arranged in the accommodating chamber;

[0018] a first spring, the first spring being disposed between a top surface of the sliding member and a top surface of the head body;

[0019] Among them, the output shaft of the telescopic cylinder passes through the sliding member and is connected to the piston, and the output shaft of the telescopic cylinder and the sliding member are slidably connected, and the connection point between the feed pipe and the head body is located in the sliding groove.

[0020] In the technical solution, when the telescopic cylinder drives the piston to move downward, the sliding member moves downward under the drive of the first spring. Through the cooperation between the sliding member and the sliding groove, the cross-sectional area of ​​the connection between the feed pipe and the head body can be reduced, thereby reducing the flow rate until it is closed. When the telescopic cylinder drives the piston to move upward, the top surface of the piston contacts the top surface of the accommodating chamber, driving the sliding member to move upward, increasing the cross-sectional area of ​​the connection between the feed pipe and the head body, thereby increasing the flow rate until it is fully opened.

[0021] In the above technical solution, further, sealing rings are symmetrically arranged on the outer wall of the sliding member.

[0022] In the present technical solution, the sealing ring is provided to improve the sealing performance when the sliding member closes the feed pipe and the head body.

[0023] In the above technical solution, further, the discharge pipe is detachably arranged below the head body, and a quick-release structure is arranged between the discharge pipe and the head body.

[0024] In the above technical solution, further, the quick-release structure includes:

[0025] A convex block, wherein the convex block is arranged below the machine head body, and a card slot is symmetrically arranged on the outer wall of the convex block;

[0026] A clamping ring, which is arranged on the top of the discharge pipe, and the inner wall of the clamping ring is in contact with the outer wall of the protrusion;

[0027] A clearance groove, which is arranged on the inner wall of the clamping ring and is connected to the clamping groove;

[0028] A slider, wherein the slider is slidably arranged in the clamping groove and the air-avoiding groove, and a connecting groove is penetrated between the air-avoiding groove and the outer wall of the discharge pipe;

[0029] A driving structure, which is arranged on the outer wall of the discharge pipe and is used to control the slider to be inserted into or slide out of the slot;

[0030] Wherein, the width of the sliding block is greater than the depth of the slot.

[0031] In the present technical solution, the discharge pipe can be clamped under the machine head body through the cooperation between the clamping ring and the protrusion. Through the cooperation between the set clamping slot, the air avoidance slot, the slider, the connecting slot and the driving structure, the slider can slide between the clamping slot and the air avoidance slot to fix the discharge pipe. The quick-release structure is symmetrically arranged, which is beneficial to improving the stability of the device. The detachable discharge pipe can facilitate the operator to clean the inside of the machine head body.

[0032] In the above technical solution, further, the driving structure includes:

[0033] Support frames, the support frames are symmetrically fixed on the outer wall of the discharge pipe, and a rotating shaft is arranged between the support frames;

[0034] A pressing plate, which is arranged between the two supporting frames and is rotatably connected to the rotating shaft;

[0035] A fixing groove, which is provided on the outer wall of the discharge pipe and is located below the support frame;

[0036] A telescopic rod, wherein the telescopic rod is arranged in the fixing groove, and the output shaft contacts the pressing plate;

[0037] A connecting rod, wherein the connecting rod is movably arranged in the connecting groove, one end of the connecting rod is fixedly connected to the front face of the slider, and the other end is hingedly arranged to the pressing plate;

[0038] Wherein, a second spring is sleeved on the outer side of the telescopic rod.

[0039] In the present technical solution, the lower part of the pressure plate is pressed, and the upper part of the pressure plate is tilted up through the cooperation between the support frame and the rotating shaft. The slider can be taken out of the slot through the provided connecting rod, and the lower part of the pressure plate can be kept in a tilted state through the cooperation between the telescopic rod and the second spring provided in the fixed slot, which is beneficial to avoid the phenomenon of the discharge pipe falling off during operation and to improve the stability of the device.

[0040] In the above technical solution, further, an anti-mistake groove is provided on the inner wall of the clamping ring, and an anti-mistake block is provided at a relative position of the outer wall of the protrusion.

[0041] In the present technical solution, the cooperation between the anti-mistake groove and the anti-mistake block facilitates the alignment of the card slot and the avoidance groove, so that the slider can slide smoothly into the card slot, making it easy for the operator to install the discharge pipe.

[0042] In the above technical solution, further, the bottom surface of the piston is provided with a conical surface, and the bottom of the discharge pipe is provided with a conical surface matching therewith.

[0043] In the present technical solution, the piston and the discharge pipe are provided with mutually matching conical surfaces, which can improve the discharge efficiency of the material in the head body, making it easier for the piston to push out all the materials in the head body.

[0044] The beneficial effects of the utility model are:

[0045] 1. The material is transported from the feed pipe to the inside of the machine head body, and then filled into the container through the discharge pipe. During the filling process, the flow control structure can control the flow of the material input into the machine head body through the feed pipe, and when the material filling in the container is about to reach the requirement, the flow control structure can block the feed pipe, prohibiting the material in the feed pipe from flowing into the machine head body, and the piston is pushed downward by the telescopic cylinder to squeeze the residual material on the inner wall of the machine head body from the discharge pipe into the container, so that no material will remain on the inner wall of the machine head body, which is conducive to avoiding the phenomenon of material dripping under the head body when changing the container, and is conducive to improving the hygiene of the processing environment and the utilization rate of materials.

[0046] 2. The discharge pipe can be clamped under the machine head body through the cooperation between the clamping ring and the protrusion. Through the cooperation between the set clamping slot, the air avoidance slot, the slider, the connecting slot and the driving structure, the slider can slide between the clamping slot and the air avoidance slot to fix the discharge pipe. The quick-release structure is symmetrically arranged, which is beneficial to improving the stability of the device. The detachable discharge pipe can facilitate the operator to clean the inside of the machine head body. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0048] Figure 2 It is a three-dimensional cross-sectional view of the utility model;

[0049] Figure 3 It is a three-dimensional schematic diagram of the discharge pipe of the utility model;

[0050] Figure 4 It is a structural schematic diagram of the driving structure and quick-release structure of the utility model;

[0051] Figure 5 This utility model Figure 2 A magnified image of area A;

[0052] The symbols in the figure are:

[0053] 1. Machine head body; 2. Feed pipe; 3. Discharge pipe; 4. Flow control structure; 401. Sliding groove; 402. Sliding part; 403. First spring; 404. Accommodating chamber; 5. Wall scraping structure; 501. Piston; 502. Telescopic cylinder; 6. Quick release structure; 601. Bump; 602. Slot; 603. Snap ring; 604. Avoiding groove; 605. Sliding block; 606. Connecting groove; 7. Driving structure; 701. Support frame; 702. Rotating shaft; 703. Pressing plate; 704. Fixed groove; 705. Telescopic rod; 706. Connecting rod; 707. Second spring; 8. Anti-fool groove. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0055] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0057] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0058] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0059] Embodiment 1:

[0060] Depend on Figure 1-Figure 5As shown, this embodiment provides a filling machine head, including: a head body 1, which is hollow and has a feed pipe 2 connected to the side wall of the head body 1; a discharge pipe 3, which is arranged at the bottom of the head body 1 for filling materials; a flow control structure 4, which is movably arranged inside the head body 1 to control the flow rate of the material from the feed pipe 2 to the head body 1; a wall scraping structure 5, which is arranged inside the head body 1, and includes: a piston 501, which is movably arranged inside the head body 1 and fits with the inner wall of the head body 1; a telescopic cylinder 502, which is arranged above the head body 1, and the output shaft passes through the top of the head body 1 and is connected to the top surface of the piston 501.

[0061] The material is transported from the feed pipe 2 to the inside of the head body 1, and then filled into the container through the discharge pipe 3. During the filling process, the flow control structure 4 is set to control the flow of the material input into the head body 1 through the feed pipe 2, and when the material filling in the container is about to reach the requirement, the flow control structure 4 can block the feed pipe 2, prohibiting the material in the feed pipe 2 from flowing into the head body 1, and the piston 501 is pushed downward by the telescopic cylinder 502 to squeeze the material remaining on the inner wall of the head body 1 from the discharge pipe 3 into the container, so that no material will remain on the inner wall of the head body 1, which is beneficial to avoid the phenomenon of material dripping from the bottom of the head body 1 when changing the container, and is beneficial to improving the hygiene of the processing environment and the utilization rate of materials.

[0062] Furthermore, the flow control structure 4 includes: a sliding groove 401, which is arranged inside the head body 1, and the inner diameter of the sliding groove 401 is larger than the inner diameter of the head body 1; a sliding member 402, which is arranged in the sliding groove 401, and the outer wall of the sliding member 402 is in contact with the surface of the sliding groove 401; an accommodating chamber 404, which is arranged on the bottom surface of the sliding member 402, and the piston 501 is slidably arranged in the accommodating chamber 404; a first spring 403, which is arranged between the top surface of the sliding member 402 and the top surface of the head body 1; wherein, the output shaft of the telescopic cylinder 502 passes through the sliding member 402 and is connected to the piston 501, and the output shaft of the telescopic cylinder 502 is slidably connected to the sliding member 402, and the connection between the feed pipe 2 and the head body 1 is located in the sliding groove 401.

[0063] When the telescopic cylinder 502 drives the piston 501 to move downward, the sliding member 402 moves downward under the drive of the first spring 403. Through the cooperation between the sliding member 402 and the sliding groove 401, the cross-sectional area of ​​the connection between the feed pipe 2 and the head body 1 can be reduced, thereby reducing the flow rate until it is closed. When the telescopic cylinder 502 drives the piston 501 to move upward, the top surface of the piston 501 contacts the top surface of the accommodating chamber 404, driving the sliding member 402 to move upward, increasing the cross-sectional area of ​​the connection between the feed pipe 2 and the head body 1, thereby increasing the flow rate until it is fully opened.

[0064] Furthermore, sealing rings are symmetrically arranged on the outer wall of the sliding member 402 .

[0065] The sealing ring provided can improve the sealing performance when the sliding member 402 closes the feed pipe 2 and the head body 1.

[0066] Embodiment 2:

[0067] Depend on Figure 1-Figure 4 As shown, this embodiment provides a filling machine head, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] Further, the discharge pipe 3 is detachably arranged below the head body 1, and a quick-release structure 6 is arranged between the head body 1, and the quick-release structure 6 includes: a protrusion 601, the protrusion 601 is arranged below the head body 1, and a card slot 602 is symmetrically arranged on the outer wall of the protrusion 601; a snap ring 603, the snap ring 603 is arranged on the top of the discharge pipe 3, and the inner wall of the snap ring 603 is in contact with the outer wall of the protrusion 601; an air avoidance groove 604, the air avoidance groove 604 is provided on the bottom of the discharge pipe 3, and the inner wall of the snap ring 603 is in contact with the outer wall of the protrusion 601; 04 is arranged on the inner wall of the clamping ring 603 and is connected to the clamping slot 602; the slider 605 is slidably arranged in the clamping slot 602 and the air avoidance slot 604, and a connecting groove 606 is penetrated between the air avoidance slot 604 and the outer wall of the discharge pipe 3; the driving structure 7 is arranged on the outer wall of the discharge pipe 3, and is used to control the slider 605 to be clamped in or slide out of the clamping slot 602; wherein, the width of the slider 605 is greater than the depth of the clamping slot 602.

[0069] The discharge pipe 3 can be clamped under the machine head body 1 through the cooperation between the clamping ring 603 and the protrusion 601. Through the cooperation between the set clamping groove 602, the air avoidance groove 604, the slider 605, the connecting groove 606 and the driving structure 7, the slider 605 can slide between the clamping groove 602 and the air avoidance groove 604 to fix the discharge pipe 3. The quick-release structure 6 is symmetrically arranged, which is beneficial to improving the stability of the device. The detachable discharge pipe 3 can facilitate the operator to clean the inside of the machine head body 1.

[0070] Furthermore, the driving structure 7 includes: a support frame 701, which is symmetrically fixed on the outer wall of the discharge pipe 3, and a rotating shaft 702 is arranged between the support frames 701; a pressure plate 703, which is arranged between the two support frames 701 and is rotatably connected to the rotating shaft 702; a fixed groove 704, which is opened on the outer wall of the discharge pipe 3 and is located below the support frame 701; a telescopic rod 705, which is arranged in the fixed groove 704, and the output shaft is in contact with the pressure plate 703; a connecting rod 706, which is movably arranged in the connecting groove 606, and one end is fixedly connected to the front of the slider 605, and the other end is hinged to the pressure plate 703; wherein a second spring 707 is sleeved on the outer side of the telescopic rod 705.

[0071] By pressing the lower part of the pressing plate 703, the upper part of the pressing plate 703 is tilted up through the cooperation between the support frame 701 and the rotating shaft 702, and the slider 605 can be taken out of the card slot 602 through the provided connecting rod 706, and the lower part of the pressing plate 703 can be kept in a tilted state through the cooperation between the telescopic rod 705 provided in the fixed slot 704 and the second spring 707, which is beneficial to avoid the phenomenon of the discharge pipe 3 falling off during operation and to improve the stability of the device.

[0072] Furthermore, an anti-mistake groove 8 is provided on the inner wall of the clamping ring 603 , and an anti-mistake block (not marked) is provided at a relative position of the outer wall of the protrusion 601 .

[0073] By cooperating with the fool-proof groove 8 and the fool-proof block, it is easy to align the slot 602 and the avoidance slot 604, so that the slider 605 can slide smoothly into the slot 602, making it easy for the operator to install the discharge pipe 3.

[0074] Furthermore, the bottom surface of the piston 501 is provided with a conical surface, and the bottom of the discharge pipe 3 is provided with a conical surface matching therewith.

[0075] The piston 501 and the discharge pipe 3 are provided with mutually matching conical surfaces, which can improve the discharge efficiency of the material in the die body 1 and facilitate the piston 501 to push out all the materials in the die body 1.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A filling machine head, characterized in that ,include: A die body (1), wherein the die body (1) is hollow, and a feed pipe (2) is connected to a side wall of the die body (1); A discharge pipe (3), the discharge pipe (3) being arranged at the bottom of the machine head body (1) and used for filling materials; A flow control structure (4), wherein the flow control structure (4) is movably arranged inside the die body (1) and is used to control the flow rate of the material flowing from the feed pipe (2) to the die body (1); A wall scraping structure (5), wherein the wall scraping structure (5) is arranged inside the head body (1), and the wall scraping structure (5) comprises: A piston (501), wherein the piston (501) is movably disposed inside the handpiece body (1) and is in contact with the inner wall of the handpiece body (1); The telescopic cylinder (502) is arranged above the machine head body (1), and the output shaft passes through the top of the machine head body (1) and is connected to the top surface of the piston (501).

2. A filling machine head according to claim 1, characterized in that: The flow control structure (4) comprises: A sliding groove (401), wherein the sliding groove (401) is arranged inside the machine head body (1), and the inner diameter of the sliding groove (401) is larger than the inner diameter of the machine head body (1); A sliding member (402), wherein the sliding member (402) is disposed in the sliding groove (401), and an outer wall of the sliding member (402) is in contact with a surface of the sliding groove (401); An accommodating chamber (404), wherein the accommodating chamber (404) is disposed on the bottom surface of the sliding member (402), and the piston (501) is slidably disposed in the accommodating chamber (404); A first spring (403), the first spring (403) being arranged between the top surface of the sliding member (402) and the top surface of the head body (1); The output shaft of the telescopic cylinder (502) passes through the sliding member (402) and is connected to the piston (501), and the output shaft of the telescopic cylinder (502) and the sliding member (402) are slidably connected, and the connection point between the feed pipe (2) and the machine head body (1) is located in the sliding groove (401).

3. A filling machine head according to claim 2, characterized in that: Sealing rings are symmetrically arranged on the outer wall of the sliding member (402).

4. A filling machine head according to claim 1, characterized in that: The discharge pipe (3) is detachably arranged below the machine head body (1), and a quick-release structure (6) is arranged between the discharge pipe and the machine head body (1).

5. A filling machine head according to claim 4, characterized in that: The quick-release structure (6) comprises: A convex block (601), wherein the convex block (601) is arranged below the head body (1), and a clamping groove (602) is symmetrically arranged on the outer wall of the convex block (601); A clamping ring (603), wherein the clamping ring (603) is arranged at the top of the discharge pipe (3), and the inner wall of the clamping ring (603) is in contact with the outer wall of the protrusion (601); An air avoidance groove (604), wherein the air avoidance groove (604) is arranged on the inner wall of the clamping ring (603) and is connected to the clamping groove (602); A slider (605), wherein the slider (605) is slidably disposed in the clamping groove (602) and the air avoidance groove (604), and a connecting groove (606) is provided between the air avoidance groove (604) and the outer wall of the discharge pipe (3); A driving structure (7), wherein the driving structure (7) is arranged on the outer wall of the discharge pipe (3) and is used to control the sliding block (605) to be inserted into or slid out of the slot (602); Wherein, the width of the sliding block (605) is greater than the depth of the card slot (602).

6. A filling machine head according to claim 5, characterized in that: The driving structure (7) comprises: Support frames (701), the support frames (701) are symmetrically fixedly arranged on the outer wall of the discharge pipe (3), and a rotating shaft (702) is arranged between the support frames (701); A pressing plate (703), wherein the pressing plate (703) is disposed between the two supporting frames (701) and is rotatably connected to the rotating shaft (702); A fixing groove (704), wherein the fixing groove (704) is formed on the outer wall of the discharge pipe (3) and is located below the support frame (701); A telescopic rod (705), wherein the telescopic rod (705) is arranged in the fixing groove (704), and the output shaft is in contact with the pressing plate (703); A connecting rod (706), wherein the connecting rod (706) is movably arranged in the connecting groove (606), one end of which is fixedly connected to the front face of the slider (605), and the other end of which is hingedly arranged to the pressing plate (703); Wherein, a second spring (707) is sleeved on the outer side of the telescopic rod (705).

7. A filling machine head according to claim 5, characterized in that: An anti-mistake groove (8) is provided on the inner wall of the clamping ring (603), and an anti-mistake block is provided at a position opposite to the outer wall of the protrusion (601).

8. A filling machine head according to claim 1, characterized in that: The bottom surface of the piston (501) is provided with a conical surface, and the bottom of the discharge pipe (3) is provided with a conical surface matching the conical surface.

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