A drip prevention mechanism of a filling machine

Abstract

The utility model relates to a filling machine technical field, solved the filling after filling head has certain height, in the leakage prevention processing time, cannot make the collecting device and filling head completely adhere, lead to part liquid splash's problem. Specifically for a kind of anti-dripping mechanism of filling machine, including base, base top surface one side setting support rod, support rod top one side setting shell, shell bottom setting filling head;The bottom one side of support rod is fixedly connected with connecting plate, and the bottom of the connecting plate is provided with a driving motor, and the output end of the driving motor penetrates the connecting plate and is fixedly connected with a threaded screw rod;The surface of support rod is provided with a sliding groove coaxial with the connecting plate, the sliding groove is slidably connected with a sliding block, the surface of threaded screw rod is threadedly connected with a horizontal plate, one end of the horizontal plate is fixedly connected with the surface of sliding block, and the other end of the horizontal plate is provided with a sliding hole and is rotatably connected with a fixed ring;The top of the fixed ring is provided with a spring, the spring is sleeved with a fixed rod inside, and the fixed rod is slidably connected inside the sliding hole.

Description

Technical Field

[0001] This utility model relates to the field of filling machine technology, specifically to an anti-drip mechanism for a filling machine. Background Technology

[0002] The patent announcement number CN220745361U discloses an anti-drip mechanism for a filling machine, which includes a housing, a filling head disposed at the bottom of the housing, a sealing mechanism disposed between the filling head and the interior of the housing, a receiving cylinder welded to the right side wall of the filling head, and a collecting mechanism disposed between the interior of the receiving cylinder and the bottom of the filling head. The collecting mechanism includes a motor, a circular gear, a radius gear, a rotating rod, a connecting rod, a bracket, and a collecting tray. The motor is fixedly installed on the inner top wall of the receiving cylinder.

[0003] By setting up a collection mechanism, when the filling head is sealed, the internal liquid flows downward. Under the action of the motor, the meshing of the circular gear and the radius gear drives the collection tray to move in a semi-circular trajectory through the connecting rod and bracket. This allows the collection tray to be positioned below the filling head to collect the dripping liquid and avoid liquid waste.

[0004] However, after filling, the filling head has a certain height, and during the leak prevention process, the collection device cannot be completely fitted with the filling head, resulting in some liquid splashing. This solution is not very efficient for leak prevention of filling equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-drip mechanism for a filling machine, which solves the problem that after filling, the filling head has a certain height, making it impossible for the collection device to completely fit with the filling head during the anti-leakage process, resulting in some liquid splashing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-drip mechanism for a filling machine, comprising a base, a support rod provided on one side of the top surface of the base, a housing provided on one side of the top of the support rod, and a filling head provided at the bottom of the housing; a connecting plate is fixedly connected to one side of the bottom of the support rod, a drive motor is provided at the bottom of the connecting plate, and a threaded screw is fixedly connected to the output end of the drive motor through the connecting plate;

[0007] The support rod has a groove coaxial with the connecting plate on its surface. A slider is slidably connected inside the groove. A horizontal plate is threadedly connected to the surface of the threaded rod. One end of the horizontal plate is fixedly connected to the surface of the slider. A sliding hole is opened at the other end of the horizontal plate and a fixing ring is rotatably connected to it. A spring is set at the top of the fixing ring. A fixing rod is sleeved inside the spring. The fixing rod is slidably connected inside the sliding hole. An extension plate is fixedly connected to both sides of the top of the fixing rod in an axisymmetric manner. A sleeve that coincides with the axis of the filling head is fixedly connected to the end of the extension plate.

[0008] In a specific embodiment, the fixing rod forms an axial sliding pair with the cross plate through a sliding hole, and the two ends of the spring abut against the top of the fixing ring and the bottom flange of the fixing rod, respectively.

[0009] In one specific embodiment, the drive motor is rigidly connected to the connecting plate by bolts, and the axis of the threaded screw is parallel to the length direction of the support rod.

[0010] In one specific embodiment, the cross-section of the slide is a convex structure, and the slider is matched as a protrusion and forms a unidirectional degree of freedom constraint within the slide.

[0011] In one specific embodiment, the inner diameter of the sleeve is larger than the outer diameter of the filling head, and the inner wall of the sleeve is provided with a polytetrafluoroethylene sealing layer.

[0012] In one specific embodiment, the extension plate is an L-shaped bent plate, with a sleeve connecting its horizontal section and the top two sides of the fixing rod welded to its vertical section.

[0013] Compared with the prior art, this utility model provides an anti-drip mechanism for a filling machine, which has the following beneficial effects:

[0014] In the technical solution disclosed in this utility model, the axial precision alignment function between the sleeve and the filling head is achieved through the structural design of the drive motor linked to the threaded screw. The drive motor drives the threaded screw to rotate, which is converted into linear motion through the threaded pair, pushing the horizontal plate to rise and fall along the slide groove. The slider forms a unidirectional degree of freedom constraint in the convex slide groove, ensuring that the motion trajectory is stable and without deviation. This allows the sleeve to be accurately raised and lowered to the coaxial position with the filling head, solving the problems of poor fit and liquid splashing caused by height difference in the prior art. The polytetrafluoroethylene sealing layer on the inner wall of the sleeve forms a flexible sealing surface when in contact, further improving the fit, reducing the risk of dripping, and improving the leakage prevention efficiency. Through the linkage structure design of the spring and the fixed rod, the continuous elastic pressing function of the sleeve on the filling head is achieved. The spring is sleeved on the outside of the fixed rod, with its two ends abutting the top of the fixed ring and the bottom flange of the fixed rod, respectively. When the sleeve contacts the filling head, the spring is compressed to generate axial pressure, which is transmitted to the sleeve through the fixed rod, so that it automatically adapts to the slight deformation or vibration of the filling head. This solves the problem of insufficient sealing caused by the rigid contact of the existing collection tray. The elastic clamping mechanism ensures that the liquid does not splash, and the sealing reliability is improved, making it especially suitable for filling high-viscosity liquids. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the shell structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the fixing rod and spring structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the drive motor and threaded screw structure of this utility model.

[0020] In the diagram: 1. Base; 2. Support rod; 3. Housing; 4. Filling head; 6. Connecting plate; 7. Drive motor; 8. Threaded screw; 9. Slide groove; 10. Slider; 11. Horizontal plate; 12. Fixing ring; 13. Spring; 14. Fixing rod; 15. Extension plate; 16. Sleeve. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-4 In one embodiment of this utility model, a drip-proof mechanism for a filling machine includes a base 1, a support rod 2 is provided on one side of the top surface of the base 1, a housing 3 is provided on one side of the top of the support rod 2, and a filling head 4 is provided at the bottom of the housing 3; a connecting plate 6 is fixedly connected to one side of the bottom of the support rod 2, a drive motor 7 is provided at the bottom of the connecting plate 6, and a threaded screw 8 is fixedly connected to the output end of the drive motor 7 through the connecting plate 6.

[0023] The specific problem addressed in this embodiment is: after filling, the filling head has a certain height, making it impossible to completely fit the collection device with the filling head during leak prevention, resulting in some liquid splashing. This utility model achieves precise axial alignment between the sleeve 16 and the filling head 4 through a structural design that links the drive motor 7 with the threaded screw 8. The drive motor 7 drives the threaded screw 8 to rotate, which is converted into linear motion through the threaded joint, pushing the horizontal plate 11 up and down along the slide groove 9. The slider 10 forms a unidirectional degree of freedom constraint within the convex slide groove 9, ensuring a stable and unbiased motion trajectory. This allows the sleeve 16 to be precisely raised and lowered to a coaxial position with the filling head 4, solving the problems of poor fit and liquid splashing caused by height difference in existing technologies. The PTFE sealing layer on the inner wall of the sleeve 16 forms a flexible sealing surface upon contact, further improving the fit, reducing the risk of dripping, and enhancing leak prevention efficiency. Through the linkage structure design of the spring 13 and the fixing rod 14, the sleeve 16 achieves a continuous elastic pressing function on the filling head 4. The spring 13 is sleeved on the outside of the fixing rod 14, with its two ends abutting against the top of the fixing ring 12 and the bottom flange of the fixing rod 14, respectively. When the sleeve 16 contacts the filling head 4, the spring 13 compresses to generate lateral pressure, which is transmitted to the sleeve 16 through the fixing rod 14, allowing it to automatically adapt to the slight deformation or vibration of the filling head 4. This solves the problem of insufficient sealing caused by the rigid contact of the existing collection tray. The elastic pressing mechanism ensures no liquid splashing and improves sealing reliability, making it particularly suitable for high-viscosity liquid filling scenarios.

[0024] The support rod 2 has a groove 9 coaxial with the connecting plate 6 on its surface. A slider 10 is slidably connected inside the groove 9. A horizontal plate 11 is threadedly connected to the surface of the threaded screw 8. One end of the horizontal plate 11 is fixedly connected to the surface of the slider 10, and the other end of the horizontal plate 11 has a sliding hole and is rotatably connected to the fixing ring 12. A spring 13 is set on the top of the fixing ring 12. A fixing rod 14 is sleeved inside the spring 13. The fixing rod 14 is slidably connected inside the sliding hole. An extension plate 15 is fixedly connected to both sides of the top of the fixing rod 14 in an axially symmetrical manner. A sleeve 16 that coincides with the axis of the filling head 4 is fixedly connected to the end of the extension plate 15. In this specific embodiment, the base 1 is horizontally fixed to the filling production line base, and the support rod 2 is vertically fixed to the right side of the top surface of the base 1. The housing 3 is installed on the top left side of the support rod 2, and the filling head 4 at its bottom is used for liquid output. The connecting plate 6 is welded to the bottom right side of the support rod 2. The drive motor 7 is fixed to the bottom of the connecting plate 6 by bolts, and its output shaft passes through the connecting plate 6 and is coaxially connected to the vertical threaded screw 8. A vertical convex groove 9 is formed on the front side of the support rod 2, into which the slider 10 is embedded to form a one-way sliding constraint. The slider 10 is fixed to the left end of the horizontal plate 11, and a circular sliding hole is formed on the right end, which is rotatably connected to the fixing ring 12 through the bearing. The spring 13 is sleeved on the outside of the fixing rod 14, and the fixing rod 14 passes through the sliding hole of the horizontal plate 11 to form an axial sliding pair. Two L-shaped extension plates 15 are symmetrically welded to the top of the fixing rod 14, and the horizontal ends of the extension plates 15 are fixed to the sleeves 16, with the axis of the sleeves 16 coinciding with the axis of the filling head 4. The drive motor 7 drives the threaded screw 8 to rotate, which drives the horizontal plate 11 to rise and fall along the groove 9, so that the sleeves 16 are precisely fitted onto the outer wall of the filling head 4. The compression of the spring 13 generates continuous pressure to achieve a seal, solving the problem of dripping and splashing from the high-position filling head.

[0025] In this specific embodiment, the fixing rod 14 forms an axial sliding pair with the horizontal plate 11 through the sliding hole, and the two ends of the spring 13 abut against the top of the fixing ring 12 and the bottom flange of the fixing rod 14, respectively.

[0026] The bottom of the fixing rod 14 is machined with an annular flange, and the inner diameter of the sliding hole is slightly larger than the diameter of the fixing rod 14 to form a clearance fit. The lower end of the spring 13 abuts against the top surface of the fixing ring 12, and the upper end presses against the bottom of the flange of the fixing rod 14. When the sleeve 16 contacts the filling head 4, the fixing rod 14 moves upward along the sliding hole to compress the spring 13, forming an adaptive elastic sealing pressure. The spring 13 and the flange of the fixing rod 14 work together to provide dynamic clamping force, so that the sleeve 16 fits tightly against the outer wall of the filling head 4, adapting to different dimensional errors and preventing liquid leakage.

[0027] In this specific embodiment, the drive motor 7 and the connecting plate 6 are rigidly connected by bolts, and the axis of the threaded screw 8 is parallel to the length direction of the support rod 2;

[0028] The drive motor 7 is a stepper motor, which is rigidly locked to the bottom surface of the connecting plate 6 by four sets of bolts; the axis of the threaded screw 8 is parallel to the center line of the support rod 2 to ensure no skewing during the lifting process. When the motor starts, the rotational motion is converted into the linear displacement of the horizontal plate 11 through the threaded joint. The rigid bolt connection and the design of parallel axis ensure the stability of power transmission and avoid sealing failure caused by the offset of the sleeve 16.

[0029] In this specific embodiment, the cross-section of the slide groove 9 is a convex structure, and the slider 10 is matched as a protrusion and forms a unidirectional degree of freedom constraint within the slide groove 9;

[0030] The slide groove 9 has a convex cross-section, and the slider 10 is matched with a convex metal block. Its neck width is smaller than the groove opening and its head width is larger than the groove opening, so that the slider 10 can only slide vertically along the slide groove 9 and cannot be dislodged. The cooperation between the convex slide groove 9 and the slider 10 eliminates lateral swaying and improves the accuracy of the lifting trajectory of the sleeve 16.

[0031] In this specific embodiment, the inner diameter of the sleeve 16 is larger than the outer diameter of the filling head 4, and the inner wall of the sleeve 16 is provided with a polytetrafluoroethylene sealing layer.

[0032] The inner diameter of the sleeve 16 is larger than the outer diameter of the filling head 4. The inner wall is coated with a polytetrafluoroethylene coating to form a low-friction sealing surface. When the sleeve 16 is fitted into the filling head 4, the coating adheres to the metal surface and fills the micro gaps.

[0033] In this specific embodiment, the extension plate 15 is an L-shaped bent plate, with its horizontal section connected to the sleeve 16 and its vertical section welded to the top two sides of the fixing rod 14.

[0034] The extension plate 15 is made of stainless steel plate bent into an L shape. Its vertical section is welded to the top two sides of the fixed rod 14, and the horizontal section is connected to the sleeve 16 through a flange. The two sleeves 16 are symmetrically distributed with the axis of the fixed rod 14 as the center.

[0035] Working principle: When the drive motor 7 starts, it drives the threaded screw 8 to rotate. Through the threaded transmission, it pushes the horizontal plate 11 to rise and fall along the convex groove 9 of the support rod 2, which drives the slider 10 to move in a direction. This causes the spring 13 at the top of the fixed ring 12 to push the fixed rod 14 to slide in the sliding hole. This causes the sleeve 16 at the end of the axisymmetrically arranged L-shaped extension plate 15 to accurately fit into the outer wall of the filling head 4. At this time, the spring 13 is compressed and generates continuous axial pressure. Combined with the polytetrafluoroethylene sealing layer on the inner wall of the sleeve 16, it forms an adaptive sealing surface. When it is necessary to switch the work position, the fixed rod 14 is manually rotated to drive the symmetrical extension plate 15 and the spare sleeve 16 to replace the work position, realizing zero-drip protection and efficient maintenance.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drip-proof mechanism for a filling machine, comprising a base (1), characterized in that: A support rod (2) is provided on one side of the top surface of the base (1), a housing (3) is provided on one side of the top of the support rod (2), and a filling head (4) is provided at the bottom of the housing (3); a connecting plate (6) is fixedly connected to one side of the bottom of the support rod (2), a drive motor (7) is provided at the bottom of the connecting plate (6), and a threaded screw (8) is fixedly connected to the output end of the drive motor (7) through the connecting plate (6). The support rod (2) has a groove (9) coaxial with the connecting plate (6) on its surface. The groove (9) is connected to the slider (10) in a sliding manner. The threaded screw (8) is connected to the horizontal plate (11) in a threaded manner. One end of the horizontal plate (11) is fixedly connected to the surface of the slider (10). The other end of the horizontal plate (11) has a sliding hole and is rotatably connected to the fixing ring (12). The top of the fixing ring (12) is provided with a spring (13). The spring (13) is sleeved with a fixing rod (14). The fixing rod (14) is slidably connected to the inside of the sliding hole. The top two sides of the fixing rod (14) are fixedly connected to the extension plate (15) in an axisymmetric manner. The end of the extension plate (15) is fixedly connected to the sleeve (16) which coincides with the axis of the filling head (4).

2. The anti-drip mechanism of a filling machine according to claim 1, characterized in that: The fixed rod (14) forms an axial sliding pair with the horizontal plate (11) through the sliding hole, and the two ends of the spring (13) abut against the top of the fixed ring (12) and the bottom flange of the fixed rod (14) respectively.

3. The anti-drip mechanism of a filling machine according to claim 1, characterized in that: The drive motor (7) is rigidly connected to the connecting plate (6) by bolts, and the axis of the threaded screw (8) is parallel to the length direction of the support rod (2).

4. The anti-drip mechanism of a filling machine according to claim 1, characterized in that: The cross-section of the groove (9) is a convex structure, and the slider (10) is matched as a protrusion and forms a unidirectional degree of freedom constraint in the groove (9).

5. The anti-drip mechanism of a filling machine according to claim 1, characterized in that: The inner diameter of the sleeve (16) is larger than the outer diameter of the filling head (4), and the inner wall of the sleeve (16) is provided with a polytetrafluoroethylene sealing layer.

6. The anti-drip mechanism of a filling machine according to claim 1, characterized in that: The extension plate (15) is an L-shaped bent plate, with a horizontal section connected to a sleeve (16) and a vertical section welded to the top two sides of a fixing rod (14).

Images