Polishing device for inner wall of buffer cavity of lifting cylinder of filling machine

Abstract

The utility model relates to a filling machine lifting cylinder buffer cavity inner wall polishing device which comprises a rotating block, a rotating shaft is fixed on the rotating block, a cylinder grinding roller is connected outside the rotating block through a telescopic assembly, a first groove is formed in the side, close to a buffer cavity, of the cylinder grinding roller, and a cone grinding roller is arranged on the side, close to the buffer cavity, of the cylinder grinding roller. Second grooves are formed in the two ends of the cone grinding roller. The cone grinding roller can rotate by a certain angle relative to the cylinder grinding roller, when the cone grinding roller is attached to the inner wall of the buffering cavity, the cone grinding roller moves to the position tangent to the side end of the cylinder grinding roller under the pressure of the inner wall of the buffering cavity, and the state that the cone grinding roller is attached to the included angle of the cone and the cylinder of the buffering cavity is formed; therefore, polishing equipment can polish the inner wall of the cylinder and the inner wall of the cone at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing, in particular to a polishing device for the inner wall of a buffer cavity of a lifting cylinder of a filling machine. Background Art

[0002] When filling fluids (such as water, porridge, and other liquid foods), filling machines need to control the filling speed at the end to prevent splashing, bubbles, and other problems at the bottle or barrel mouth. To control the filling speed at the end, the end of the filling machine's lifting cylinder is often designed with a taper to form a terminal buffer chamber. When the filling piston moves to the taper, the cross-sectional area decreases, resulting in a slower flow rate and increased resistance, thus achieving a buffering effect.

[0003] During manufacturing, the roughness of the buffer cavity must be strictly controlled to prevent damage to the sealing ring when it contacts the piston. Unlike conventional cylindrical bodies, the buffer cavity exhibits a certain taper, making it impossible to directly polish the inner wall of the buffer cavity using the same method as a cylindrical body. The angle at the intersection of the taper and the cylinder prevents continuous polishing. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a polishing device for the inner wall of the buffer chamber of the lifting cylinder of a filling machine, which at least partially solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a device for polishing the inner wall of the buffer chamber of the lifting cylinder of a filling machine, comprising a rotating block, a rotating shaft fixed in the middle of the rotating block, a telescopic assembly provided in a circumferential array on the outer wall of the rotating block, a cylinder grinding roller fixed on the telescopic assembly, and the cylinder grinding roller can slide along the radial direction of the rotating block.

[0006] Furthermore, the telescopic assembly includes a telescopic bin, an active rod and a buffer rod. The telescopic bin circular array is arranged on the rotating block, the active rod is slidingly arranged in the inner cavity of the telescopic bin, the telescopic bin upper array is provided with a first positioning hole, the active rod side wall array is provided with a second positioning hole, the sizes of the first positioning hole and the second positioning hole are adapted, and a bolt connecting the first positioning hole and the second positioning hole is provided on the outside of the telescopic bin.

[0007] Furthermore, the bottom end of the buffer rod is slidably arranged in the inner cavity of the active rod, a first spring is connected between the buffer rod and the active rod, and the upper end of the buffer rod is arranged at the lower end of the cylindrical grinding roller.

[0008] Furthermore, in order to solve the problem of continuous polishing of the inner wall of the buffer chamber, a conical grinding roller is provided at one end of the cylindrical grinding roller close to the buffer chamber, a first bevel is provided on one side of the cylindrical grinding roller close to the buffer chamber, and second bevels are provided at both ends of the conical grinding roller.

[0009] Furthermore, in order to adjust the position and angle of the conical grinding roller, a horizontal rod is slidably provided on the telescopic assembly, a second spring is connected between the horizontal rod and the cylindrical grinding roller, and a first tightening rod is horizontally slidably provided inside the horizontal rod, and the first tightening rod is hinged to the middle part of the conical grinding roller.

[0010] Furthermore, the first tightening rod and the horizontal rod are connected via a third spring.

[0011] Furthermore, a second pushing rod is slidably provided at the lower end of the horizontal rod, the second pushing rod is hinged to the middle and lower part of the cone grinding roller, and a fourth spring is connected between the second pushing rod and the horizontal rod.

[0012] Furthermore, a lifting ring is provided at one end of the horizontal rod, and a lower bracket is provided at the end of the horizontal rod away from the lifting ring. The fourth spring is fixed on the lower bracket, a slot is opened in the middle of the lower bracket, and sliding grooves are symmetrically provided on the side walls of the slot of the lower bracket.

[0013] Furthermore, the lifting ring is slidably arranged on the telescopic assembly, and the second spring is connected between the lifting ring and the cylindrical grinding roller.

[0014] Furthermore, a sliding block is symmetrically slidably provided on the side wall of the second pressing rod, and the sliding block slides synchronously in the sliding groove in the lower bracket.

[0015] The beneficial effects achieved by the present invention are as follows: the conical grinding roller can rotate at a certain angle relative to the cylindrical grinding roller. When the conical grinding roller fits against the inner wall of the buffer chamber, the conical grinding roller is subjected to pressure from the inner wall of the buffer chamber and moves to a position tangent to the side end of the cylindrical grinding roller, forming a state in which the angle between the cone and the cylinder fits against the buffer chamber, so that the polishing equipment can polish the inner wall of the cylinder and the inner wall of the cone at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The state of the embodiment of the utility model Figure 1 ;

[0017] Figure 2 The state of the embodiment of the utility model Figure 2 ;

[0018] Figure 3 A partial cross-sectional view of an embodiment of the present utility model;

[0019] Figure 4 is a cross-sectional view of the horizontal rod;

[0020] Figure 5 It is a cross-sectional view showing the positional relationship between the horizontal rod and the second tightening rod.

[0021] Among them, 1. rotating shaft, 2. rotating block, 3. telescopic warehouse, 4. active rod, 5. buffer rod, 6. cylinder grinding roller, 7. cone grinding roller, 8. horizontal rod, 9. first tightening rod, 10. second tightening rod, 11. first positioning hole, 12. second positioning hole, 13. bolt, 14. first spring, 15. second spring, 16. third spring, 17. fourth spring, 18. first groove, 19. second groove, 20. lifting ring, 21. lower bracket, 22. slide groove, 23. slider.

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the utility model proposes a polishing device for the inner wall of the buffer chamber of the lifting cylinder of a filling machine, including a rotating block 2, a rotating shaft 1 is fixed in the middle of the rotating block 2, the rotating shaft 1 is driven by an external power mechanism, and the rotating shaft 1 drives the rotating block 2 to rotate, and a telescopic component is provided in a circular array on the outer wall of the rotating block 2, and a cylinder grinding roller 6 is fixed on the telescopic component. The telescopic component can automatically adjust the length along the radius of the rotating block 2, so that the cylinder grinding roller 6 can slide along the radius of the rotating block 2 to adapt to lifting cylinders with different inner diameters, so that the cylinder grinding roller 6 can fit the inner wall of the lifting cylinder.

[0026] Combine Figure 3As shown, the telescopic assembly includes a telescopic bin 3, an active rod 4 and a buffer rod 5. The telescopic bin 3 is arranged in a circular array on the rotary block 2, and the active rod 4 is slidingly arranged in the inner cavity of the telescopic bin 3. The telescopic bin 3 is arrayed with a first positioning hole 11, and the active rod 4 is arrayed with a second positioning hole 12 on the side wall. The sizes of the first positioning hole 11 and the second positioning hole 12 are adapted. A bolt 13 connecting the first positioning hole 11 and the second positioning hole 12 is provided on the outside of the telescopic bin 3. When the active rod 4 slides relative to the telescopic bin 3, it can actively adjust the telescopic length of the telescopic assembly, thereby adjusting the position of the cylinder grinding roller 6 inside the lifting cylinder. The length after telescopic adjustment remains fixed, and the adjusted length is adapted to the inner diameter of the lifting cylinder. The active rod 4 and the telescopic bin 3 are rigidly connected.

[0027] In order to avoid collision between the cylinder grinding roller 6 and the inner wall of the lifting cylinder, and to ensure sufficient contact between the cylinder grinding roller 6 and the inner wall of the lifting cylinder to achieve a better polishing effect, the bottom end of the buffer rod 5 is slidably arranged in the inner cavity of the active rod 4, and a first spring 14 is connected between the buffer rod 5 and the active rod 4. The upper end of the buffer rod 5 is arranged at the lower end of the cylinder grinding roller 6. After the active rod 4 adjusts the extension length of the telescopic assembly, the buffer rod 5 can make additional adjustments to the extension length, and under the action of the first spring 14, it has a buffering effect on the cylinder grinding roller 6 at the top of the buffer rod 5, preventing hard contact between the cylinder grinding roller 6 and the inner wall of the lifting cylinder, and can better adapt to the collision phenomenon caused by abnormal circular runout of the inner wall of the cylinder during the polishing process.

[0028] In order to solve the problem of continuous polishing of the inner wall of the buffer chamber, a cone grinding roller 7 is provided at one end of the cylindrical grinding roller 6 close to the buffer chamber. When the cone grinding roller 7 is not close to the inner wall of the buffer chamber, Figure 1 As shown, the cone grinding roller 7 and the cylinder grinding roller 6 are in a separated state. At this time, the cylinder grinding roller 6 is polishing the inner wall of the cylindrical part of the lifting cylinder. When the cone grinding roller 7 fits with the inner wall of the buffer chamber, as shown in FIG. Figure 3 As shown, at this time, the conical grinding roller 7 is in tangential contact with the top end of the cylindrical grinding roller 6, and the angle formed by the conical grinding roller 7 and the outer busbars of the cylindrical grinding roller 6 is adapted to the angle between the cone and the cylinder of the buffer cavity, forming a state in which the conical grinding roller 7 is in contact with the inner wall of the buffer cavity, and the cylindrical grinding roller 6 is in contact with the inner wall of the cylinder, completing the continuous polishing operation. In order to avoid interference when the conical grinding roller 7 forms an angle with the cylindrical grinding roller 6, a first groove 18 is provided on the side of the cylindrical grinding roller 6 close to the buffer cavity, and a second groove 19 is provided at both ends of the conical grinding roller 7.

[0029] In order to adjust the position and angle of the conical grinding roller 7, a horizontal rod 8 is provided on the telescopic assembly for sliding. A second spring 15 is connected between the horizontal rod 8 and the cylindrical grinding roller 6. A first tightening rod 9 is provided for horizontal sliding inside the horizontal rod 8. The first tightening rod 9 is hinged to the middle part of the conical grinding roller 7. The second spring 15 always pulls the horizontal rod 8 upward. The horizontal rod 8 drives the first tightening rod 9 and the conical grinding roller 7 on the first tightening rod 9 to move upward all the time, so that the conical grinding roller 7 always moves in the direction of fitting the inner wall of the buffer cavity, so that the conical grinding roller 7 fits with its inner wall when it moves to the buffer cavity.

[0030] The first tightening rod 9 is connected to the horizontal rod 8 by a third spring 16. Under the action of the third spring 16, the first tightening rod 9 always moves in the direction away from the cylindrical grinding roller 6. When it is not in contact with the buffer chamber, the third spring 16 can separate the conical grinding roller 7 from the cylindrical grinding roller 6, so that the conical grinding roller 7 contacts the buffer chamber first, and the buffer chamber presses the conical grinding roller 7 until the conical grinding roller 7 fits with the inner wall of the buffer chamber, thereby avoiding the conical grinding roller 7 being interfered with by the cylindrical grinding roller 6 and unable to fully fit with the inner wall of the buffer chamber.

[0031] A second tightening rod 10 is slidingly provided at the lower end of the horizontal rod 8. The second tightening rod 10 is hinged to the middle and lower part of the conical grinding roller 7. A fourth spring 17 is connected between the second tightening rod 10 and the horizontal rod 8. The fourth spring 17 can always push the bottom of the conical grinding roller 7 toward the inner wall of the buffer cavity, so that the conical grinding roller 7 can fully fit the inner wall of the buffer cavity.

[0032] like Figure 4 As shown, a lifting ring 20 is provided at one end of the horizontal rod 8, and a lower bracket 21 is provided at the end of the horizontal rod 8 away from the lifting ring 20. The fourth spring 17 is fixed on the lower bracket 21. A slot is opened in the middle of the lower bracket 21, and sliding grooves 22 are symmetrically provided on the side walls of the slot of the lower bracket 21.

[0033] The lifting ring 20 is slidably mounted on the telescopic assembly. In this embodiment, Figure 3 As shown, the lifting ring 20 is slidably arranged on the buffer rod 5, and the second spring 15 is connected between the lifting ring 20 and the cylindrical grinding roller 6. The second spring 15 always pulls the lifting ring 20 upward so that the conical grinding roller 7 always moves toward the inner wall of the buffer chamber.

[0034] like Figure 5 As shown, the side wall of the second tightening rod 10 is symmetrically slidably provided with a slider 23, and the slider 23 slides synchronously in the slide groove 22 in the lower bracket 21. Under the action of the slide groove 22 and the slider 23, the second tightening rod 10 can always remain horizontal. Regardless of whether the second tightening rod 10 slides vertically or horizontally, the second tightening rod 10 always remains in a horizontal state so as to be connected to the fourth spring 17.

[0035] The specific working principle is as follows:

[0036] Adjust the exposed length of the active rod 4 according to the inner diameter of the lifting cylinder, pull out the bolt 13, pull the active rod 4 out to the appropriate size, reinsert the bolt 13 into the corresponding first positioning hole 11 and the second positioning hole 12, and then compress the cylinder grinding roller 6 inward with force. The cylinder grinding roller 6 drives the buffer rod 5 to compress the first spring 14, so that the entire device shrinks to a certain extent, and then the device is placed in the lifting cylinder.

[0037] The cylinder grinding roller 6 is no longer subjected to external pressure and extends outward under the action of the first spring 14 until the cylinder grinding roller 6 fits against the inner wall of the cylindrical part of the lifting cylinder. The first spring 14 can not only make the cylinder grinding roller 6 contact with the inside of the lifting cylinder, but also play a certain buffering role. Then start the rotating shaft 1, and the rotating shaft 1 drives each cylinder grinding roller 6 to rotate through the rotating block 2, and polishes the inner wall of the cylindrical part of the lifting cylinder.

[0038] When the cylindrical grinding roller 6 continues to move to a position close to the inner wall of the buffer chamber, the conical grinding roller 7 will first contact the inner wall of the buffer chamber. The inner wall of the buffer chamber applies pressure to the conical grinding roller 7. The conical grinding roller 7 first overcomes the resistance of the second spring 15 and moves to a suitable height, and then overcomes the resistance of the fourth spring 17 and adjusts to a suitable angle. The second tightening rod 10 overcomes the resistance of the fourth spring 17 and moves up and down and left and right to adjust the conical grinding roller 7 to a suitable angle. At this time, the conical grinding roller 7 will be fully fitted with the buffer chamber in advance and undergo preliminary polishing.

[0039] However, the conical grinding roller 7 has not yet contacted the cylindrical grinding roller 6, and there is still a certain gap between the two. As the rotating shaft 1 drives the device to rotate, the conical grinding roller 7 is unable to move horizontally due to the resistance of the buffer cavity. The cylindrical grinding roller 6 continues to move toward the buffer cavity until the cylindrical grinding roller 6 moves to the position where the buffer cavity and the cylindrical cavity intersect. At this time, the edges of the cylindrical grinding roller 6 and the conical grinding roller 7 are in tangential contact, as shown in FIG. Figure 2 As shown, the third spring 16 is subjected to pressure, causing the first pressing rod 9 and the second pressing rod 10 to shrink toward the buffer rod 5.

[0040] At this time, the cylindrical grinding roller 6 and the conical grinding roller 7 form a state of fitting the angle between the buffer cavity and the cylinder. When the rotary block 2 rotates, the cylindrical grinding roller 6 polishes the inner wall of the cylinder, and the conical grinding roller 7 polishes the inner wall of the buffer cavity, realizing one-time and continuous polishing. After the polishing is completed, the rotating shaft 1 drives the device to be spirally moved out.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A device for polishing the inner wall of a buffer chamber of a lifting cylinder of a filling machine, comprising a rotary block (2), a rotating shaft (1) being fixed on the rotary block (2), characterized in that: Also includes: A cylindrical grinding roller (6) is connected to the outside of the rotary block (2) via a telescopic assembly and is capable of sliding along the radial direction of the rotary block (2). A first groove (18) is provided on a side of the cylindrical grinding roller (6) close to the buffer chamber; The conical grinding roller (7) is arranged close to the cylindrical grinding roller (6), and the two ends of the conical grinding roller (7) are provided with a second groove (19). A horizontal rod (8) is slidably provided on the telescopic assembly, and a second spring (15) is connected between the horizontal rod (8) and the cylindrical grinding roller (6). A first tightening rod (9) is horizontally slidably provided in the horizontal rod (8), and the first tightening rod (9) and the horizontal rod (8) are connected by a third spring (16). The first tightening rod (9) is hinged to the middle part of the conical grinding roller (7), and a second tightening rod (10) is slidably provided at the lower end of the horizontal rod (8). The second tightening rod (10) is hinged to the middle and lower part of the conical grinding roller (7), and a fourth spring (17) is connected between the second tightening rod (10) and the horizontal rod (8).

2. The device for polishing the inner wall of the buffer chamber of the lifting cylinder of a filling machine according to claim 1, characterized in that: A lifting ring (20) is provided at one end of the horizontal rod (8), and a lower bracket (21) is provided at one end of the horizontal rod (8) away from the lifting ring (20). The fourth spring (17) is fixed on the lower bracket (21), and a slot is provided in the middle of the lower bracket (21). Slide grooves (22) are symmetrically provided on the side walls of the slot of the lower bracket (21).

3. The inner wall polishing device of the buffer chamber of the lifting cylinder of the filling machine according to claim 2 is characterized in that: The lifting ring (20) is slidably arranged on the telescopic assembly, and the second spring (15) is connected between the lifting ring (20) and the barrel grinding roller (6).

4. The inner wall polishing device of the buffer chamber of the lifting cylinder of the filling machine according to claim 2 is characterized in that: The side wall of the second pressing rod (10) is symmetrically slidably provided with a slider (23), and the slider (23) slides synchronously in the slide groove (22) in the lower bracket (21).

5. The inner wall polishing device of the buffer chamber of the lifting cylinder of the filling machine according to claim 1 is characterized in that: The telescopic assembly comprises a telescopic bin (3), an active rod (4) and a buffer rod (5); the telescopic bin (3) is arranged in a circumferential array on the rotary block (2); the active rod (4) is slidably arranged in the inner cavity of the telescopic bin (3); the bottom end of the buffer rod (5) is slidably arranged in the inner cavity of the active rod (4); and the upper end of the buffer rod (5) is arranged at the lower end of the cylindrical grinding roller (6).

6. The device for polishing the inner wall of the buffer chamber of the lifting cylinder of a filling machine according to claim 5, characterized in that: A first spring (14) is connected between the buffer rod (5) and the active rod (4).

7. The device for polishing the inner wall of the buffer chamber of the lifting cylinder of a filling machine according to claim 5, characterized in that: The telescopic bin (3) is provided with a first positioning hole (11) in an array on the upper side, and the active rod (4) is provided with a second positioning hole (12) in an array on the side wall. The sizes of the first positioning hole (11) and the second positioning hole (12) are adapted to each other, and a bolt (13) is provided outside the telescopic bin (3) to connect the first positioning hole (11) and the second positioning hole (12).

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