Positioning tool for replacing gear of packaging machine

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a positioning tool for replacing a gear of a packaging machine, which comprises an axial positioning block, a radial positioning block and a mounting component, a mounting groove is formed in the axial positioning block, and a kidney-shaped hole is formed in the mounting groove; a first semicircular groove is formed in the axial positioning block, a second semicircular groove is formed in the mounting part, and the first semicircular groove and the second semicircular groove are matched to form a positioning hole matched with the size of a transmission shaft of the packaging machine; the radial positioning block is provided with a connecting piece, the connecting piece penetrates through the kidney-shaped hole to install the radial positioning block on the axial positioning block, and the inner wall face of the radial positioning block is provided with positioning teeth. The radial positioning blocks are of various specifications so as to adapt to gears of different specifications; when the gear is replaced, the inner side of the axial positioning block is tightly attached to one side of the gear to be replaced, the radial positioning block is adjusted through the kidney-shaped hole to enable the positioning teeth to be meshed with gear teeth of the gear to be replaced, the radial positioning block is fixed through the connecting piece, and the gear to be replaced is replaced with a new gear.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a positioning tool used for replacing gears of a packaging machine. Background Art

[0002] The cigarette packaging machine is equipped with gears, which are prone to wear during operation, so worn gears need to be replaced regularly. When replacing gears, it is necessary to ensure the phase matching relationship with other gears, cams and shafts on the same transmission shaft. If a single gear is worn, only the worn gear needs to be replaced. Due to the compact design space of the equipment in the box, and the need to match the phase relationship with each transmission part in the box, and the phase relationship with each actuator, it takes a lot of time to repeatedly disassemble and install, and confirm the match before expanding the hole and assembling on the equipment. The labor intensity is high, and the assembly accuracy cannot be guaranteed. Therefore, it is urgent to design a special tooling to position and replace the gears to save time and ensure assembly accuracy.

[0003] The Chinese utility model patent with the patent number of 202420168765.5 discloses a positioning fixture for replacing gears of a packaging machine, including an axial positioning block and a radial positioning block arranged perpendicularly to the axial positioning block; when replacing the gear, the transmission shaft of the packaging machine passes through the positioning hole, the positioning teeth mesh with the gear teeth of the pre-replaced gear, and the bolts pass through the adjustment hole to fasten the positioning hole and the transmission shaft, and the pre-replaced gear is replaced with a new gear. The positioning fixture can only be put on the transmission shaft from one end of the transmission shaft, and cannot be disassembled and assembled at any position on the transmission shaft. The structure of the radial positioning block is also fixed, and can only replace gears of specific diameters and specific tooth shapes, and is not universal. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the inconvenience of disassembly and assembly and poor versatility of the positioning tooling in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a positioning tool for replacing gears of a packaging machine, comprising an axial positioning block, a radial positioning block and a mounting component;

[0006] The axial positioning block is provided with installation grooves extending through the left and right sides, and waist-shaped holes extending through the front and back sides of the installation groove;

[0007] A first semicircular groove is formed on the left and right sides of the lower part of the axial positioning block, and a second semicircular groove having a size suitable for the first semicircular groove is formed on the left and right sides of the mounting component. The mounting component is connected to the bottom end of the axial positioning block, and the first semicircular groove cooperates with the second semicircular groove to form a positioning hole that is adapted to the size of the transmission shaft of the packaging machine;

[0008] Connectors are respectively provided on the front and rear sides of the radial positioning block, and the connectors pass through the waist-shaped holes to install the radial positioning block on the axial positioning block. The radial positioning block is vertically arranged with the axial positioning block, and the inner wall surface of the radial positioning block is arranged as positioning teeth adapted to the gear teeth of the pre-replaced gear;

[0009] The radial positioning block is provided with various specifications to adapt to pre-replacement gears of different diameters and different tooth shapes;

[0010] When replacing the gear, the inner side of the axial positioning block is tightly attached to one side of the pre-replaced gear, and the axial positioning block is installed on the transmission shaft through the mounting component. The radial distance between the radial positioning block and the transmission shaft is adjusted through the waist-shaped hole so that the positioning tooth engages with the gear teeth of the pre-replaced gear. The radial positioning block is fixed by the connecting piece, and the pre-replaced gear is replaced with a new gear.

[0011] As an improvement of the above solution, the length of the radial positioning block is greater than the thickness of the gear to be replaced.

[0012] As an improvement of the above solution, a first connecting block is extended outward from the front and rear ends of the first semicircular groove, and a second connecting block adapted to the first connecting block is extended outward from the front and rear ends of the second semicircular groove, and the second connecting block is fitted and connected under the first connecting block.

[0013] As an improvement of the above solution, the second connecting block is fitted and connected below the first connecting block by bolts.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. Easy operation: The positioning tooling of the present application is cleverly designed. Through the cooperation of the first semicircular groove and the second semicircular groove, the axial positioning block can be directly installed at any position of the transmission shaft, rather than being inserted from one end of the transmission shaft, which greatly simplifies the operation steps and improves the efficiency of gear replacement.

[0016] 2. Strong versatility: The radial positioning block of the present application is provided with various specifications, which can not only adapt to gears of different diameters, but also adapt to gears of different tooth shapes, greatly improving its versatility and meeting the replacement needs of various types of gears.

[0017] 3. Accurate positioning: The positioning fixture of the present application can effectively avoid axial movement of the axial positioning block through the design of the first connecting block and the second connecting block, ensuring the accuracy of gear replacement, thereby ensuring the operating stability and service life of the equipment.

[0018] 4. Convenient observation: Through the design of the mounting groove, not only can the position of the radial positioning block be adjusted, but it is also convenient to observe whether the replaced gear or the new gear is fully engaged with the positioning tooth, further improving the accuracy and efficiency of gear replacement.

[0019] 5. Reduce damage: During use, the positioning tooling of the present application will not cause additional damage to the transmission shaft, thereby ensuring the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a front view of a positioning tool for replacing gears in a packaging machine provided in an embodiment of the utility model.

[0022] Figure 2 It is a left view of a positioning tool for replacing gears of a packaging machine provided in an embodiment of the utility model.

[0023] Description of reference numerals: 1, axial positioning block; 11, mounting groove; 12, waist-shaped hole; 13, first semicircular groove; 14, first connecting block; 2, radial positioning block; 21, positioning tooth; 22, connecting piece; 3, new gear; 4, transmission shaft; 5, locking hole; 6, pin hole; 7, mounting component; 71, second semicircular groove; 72, second connecting block; 8, bolt; 9, positioning hole. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] like Figure 1 -2 shows a specific implementation of the positioning tool for replacing gears of a packaging machine provided by the utility model, which includes an axial positioning block 1, a radial positioning block 2 and a mounting component 7.

[0029] The axial positioning block 1 is provided with mounting grooves 11 extending through the left and right sides thereof, and waist-shaped holes 12 are respectively provided through the front and rear sides of the mounting groove 11 .

[0030] Connectors 22 are provided on the front and rear sides of the left end of the radial positioning block 2, respectively. The connectors 22 pass through the waist-shaped hole 12 to install the radial positioning block 2 on the axial positioning block 1. The radial positioning block 2 is arranged vertically to the axial positioning block 1. The inner wall surface of the radial positioning block 2 is provided with positioning teeth 21 adapted to the gear teeth of the pre-replacement gear.

[0031] The length of the radial positioning block 2 is greater than the thickness of the pre-replaced gear, that is, the left and right length of the positioning tooth 21 is greater than the thickness of the pre-replaced gear, which ensures the meshing area between the gear and the radial positioning block 2, promotes full meshing between the two, and improves the positioning accuracy.

[0032] The radial positioning block 2 is provided with various specifications to adapt to the pre-replacement gears of different diameters and different tooth shapes. When replacing different gears, only the radial positioning block 2 needs to be replaced, and the entire positioning tooling does not need to be replaced, which improves the versatility of the positioning tooling.

[0033] By moving the connecting piece 22 up and down in the waist-shaped hole 12, the radial distance between the radial positioning block 2 and the transmission shaft 4 can be adjusted to adapt to the replacement of gears with different diameters.

[0034] The lower part of the axial positioning block 1 is provided with a first semicircular groove 13 extending therethrough on the left and right sides. The mounting component 7 is provided with a second semicircular groove 71 extending therethrough on the left and right sides, which is adapted to the size of the first semicircular groove 13. The mounting component 7 is connected to the bottom end of the axial positioning block 1 by means of a bolt 8. The first semicircular groove 13 and the second semicircular groove 71 cooperate to form a positioning hole 9 adapted to the size of the transmission shaft 4, and the axial positioning block 1 is mounted on the transmission shaft 4 through the positioning hole 9. Compared with the prior art, this design allows the axial positioning block 1 to be directly mounted at any position of the transmission shaft 4, rather than being inserted from one end of the transmission shaft 4, which is convenient to operate and improves the efficiency of gear replacement.

[0035] The first semicircular groove 13 has a first connecting block 14 extending outward from both ends thereof, and the second semicircular groove 71 has a second connecting block 72 extending outward from both ends thereof that is adapted to the first connecting block 14. The second connecting block 72 is connected to the bottom of the first connecting block 14 by bolts 8 to install the axial positioning block 1 on the transmission shaft 4, thereby avoiding axial movement of the axial positioning block 1.

[0036] When replacing the gear, the inner side of the axial positioning block 1 is pressed against one side of the pre-replaced gear, the second connecting block 72 is connected to the bottom of the first connecting block 14 by the bolt 8, the first semicircular groove 13 and the second semicircular groove 71 are pressed against the outer wall surface of the transmission shaft 4, so that the axial positioning block 1 is fixedly installed on the transmission shaft 4 for axial positioning; select a radial positioning block 2 adapted to the worn gear, adjust the radial distance between the radial positioning block 2 and the transmission shaft 4 up and down through the waist-shaped hole 12, so that the positioning tooth 21 is meshed with the gear teeth of the worn gear, fix the radial positioning block 2 on the axial positioning block 1 through the connecting piece 22, and take out the worn gear; set the gear sleeve of the new gear 3 on the transmission shaft 4, one side of the new gear 3 is pressed against the inner side of the axial positioning block 1, the gear teeth of the new gear 3 are meshed with the positioning tooth 21, the new gear 3 is fastened to the transmission shaft 4 through the locking hole 5 on the new gear 3, and then the pin hole 6 is punched on the new gear 3, the pin is installed, and finally the positioning tooling of this embodiment is removed.

[0037] Furthermore, it is possible to observe through the mounting groove 11 whether the replacement gear or the new gear 3 is fully meshed with the positioning tooth 21 .

[0038] It should be noted that the above directions (such as left, right, front, back, up and down) are based on Figure 1 Based on Figure 1 The side facing the reader is the front side, and the side facing away from the reader is the back side. Figure 1 The left side is the left side, Figure 1The right side of is the right side, Figure 1 The upper side in is the upper side, Figure 1 The lower side in is the lower side.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A positioning tool for replacing gears of a packaging machine, characterized in that: It comprises an axial positioning block (1), a radial positioning block (2) and a mounting component (7); The axial positioning block (1) is provided with installation grooves (11) extending through the left and right sides thereof, and waist-shaped holes (12) extending through the front and rear sides of the installation groove (11); A first semicircular groove (13) is formed through the lower part of the axial positioning block (1) on the left and right sides, and a second semicircular groove (71) having a size suitable for the first semicircular groove (13) is formed through the lower part of the mounting component (7) on the left and right sides. The mounting component (7) is connected to the bottom end of the axial positioning block (1), and the first semicircular groove (13) and the second semicircular groove (71) cooperate to form a positioning hole (9) having a size suitable for the transmission shaft (4) of the packaging machine; Connecting pieces (22) are respectively provided on the front and rear sides of the radial positioning block (2); the connecting pieces (22) pass through the waist-shaped hole (12) to mount the radial positioning block (2) on the axial positioning block (1); the radial positioning block (2) is arranged perpendicular to the axial positioning block (1); and the inner wall surface of the radial positioning block (2) is arranged to be a positioning tooth (21) adapted to the gear teeth of the pre-replacement gear; The radial positioning block (2) is provided with various specifications to adapt to pre-replacement gears with different diameters and different tooth shapes; When replacing a gear, the inner side of the axial positioning block (1) is tightly attached to one side of the gear to be replaced, and the axial positioning block (1) is installed on the transmission shaft (4) through the installation component (7). The radial distance between the radial positioning block (2) and the transmission shaft (4) is adjusted through the waist-shaped hole (12) so that the positioning teeth (21) mesh with the gear teeth of the gear to be replaced. The radial positioning block (2) is fixed through the connecting piece (22), and the gear to be replaced is replaced with a new gear (3).

2. The positioning tool for replacing gears of a packaging machine according to claim 1, characterized in that: The length of the radial positioning block (2) is greater than the thickness of the gear to be replaced.

3. The positioning tool for replacing gears of a packaging machine according to claim 1, characterized in that: A first connecting block (14) is provided at the front and rear ends of the first semicircular groove (13) to extend outwards, and a second connecting block (72) adapted to the first connecting block (14) is provided at the front and rear ends of the second semicircular groove (71) to extend outwards, and the second connecting block (72) is fitted and connected below the first connecting block (14).

4. The positioning tool for replacing gears of a packaging machine according to claim 3, characterized in that: The second connection block (72) is closely connected below the first connection block (14) by means of bolts (8).

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