Cam machine with multiple ejection positions

Abstract

The utility model relates to the technical field of cams, in particular to a multi-jacking-position cam machine which comprises a cam disc body, an axis hole and a plurality of pin holes are formed in the cam disc body, the axis hole is formed in the center of the cam disc body, and the pin holes are formed in the axis hole. The pin holes are formed in the cam disc body at equal intervals, the distances between the center points of the pin holes and the center points of the pin holes are equal, rectangular grooves corresponding to the pin holes are formed in the inner wall of the axis hole, the pin holes are communicated with the axis hole through cylindrical holes, the cylindrical holes are formed in the side walls of the rectangular grooves, and the pin holes are communicated with the axis hole through the cylindrical holes. A movable positioning structure is arranged at the position of the cylindrical hole; the cam machine is provided with a plurality of driving points by arranging a plurality of cambered surface convex parts, so that the working efficiency is improved; by arranging the movable positioning structure, the assembling stability of the cam disc body is enhanced, and the overall loading strength of the cam disc body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cams, in particular to a cam machine with multiple top positions. Background Art

[0002] The existing cam structure is relatively common, such as the cam with multiple top positions on the textile machine with patent number 201520981233.4. For details, please refer to Figure 1 ,like Figure 1 As shown, it includes a cam body 100, a fixing key hole 200 is opened at the center of the cam body 100, and two fixing through holes 300 with a circular cross section are also set on the cam body 100, characterized in that the side wall of the cam body 100 includes a limiting groove, a first arc-shaped protrusion 500, a second arc-shaped protrusion 400 and a third arc-shaped protrusion 700, respectively, and the first arc-shaped protrusion 500 and the second arc-shaped protrusion 400 have the same arc curvature, and the arc curvature of the third arc-shaped protrusion 700 is smaller than that of the first arc-shaped protrusion 500. The first arc-shaped protrusion 500 and the second arc-shaped protrusion 400, and the third arc-shaped protrusion 700, the first arc-shaped protrusion 500 and the second arc-shaped protrusion 400 are connected by an arc. The cam in the above-mentioned and related technologies is provided with a fixed through hole 300 structure for relatively fixing the positioning pin. The positioning pin is usually assembled into the positioning through hole 300 after cold rolling to prevent it from falling. However, after long-term use, as the temperature rises and the cam is constantly shaken, the positioning pin often falls off, resulting in an unstable cam state.

[0003] Therefore, it is necessary to provide a cam machine with multiple top positions that prevents the positioning pin from falling off. Utility Model Content

[0004] The utility model provides a cam machine with multiple top positions to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a multi-position cam machine, including: a cam disc body, an axial hole and a plurality of pin holes are opened on the cam disc body, the axial hole is opened at the center position of the cam disc body, the pin holes are opened on the cam disc body at equal intervals, and the distance between the center point of each pin hole and the center point of the pin hole is equal, the inner wall of the axial hole is opened with a rectangular groove corresponding to the pin hole, the pin hole is connected with the axial hole through a cylindrical hole, the cylindrical hole is arranged on the side wall of the rectangular groove, and a movable positioning structure is arranged at the position of the cylindrical hole.

[0006] Furthermore, the movable positioning structure includes a limit block, and the length and width of the limit block are consistent with the length and width of the rectangular groove.

[0007] Furthermore, a positioning column is fixed to one side of the limiting block, and the positioning column and the limiting block are an integrally formed structure.

[0008] Furthermore, part of the positioning column is arranged in the cylindrical hole.

[0009] Furthermore, a chamfered surface is provided at one end of the positioning column away from the limiting block.

[0010] Furthermore, the positioning column matches the positioning hole on the positioning pin.

[0011] Furthermore, a weight-reducing groove is provided on the cam disc body.

[0012] Furthermore, a weight-reducing hole is provided on the weight-reducing groove, and the area of ​​the weight-reducing hole is 1 / 8-1 / 2 of the area of ​​the cam disc body.

[0013] Furthermore, the edge of the weight-reducing groove forms a wide driving edge, and a plurality of arc-surface protrusions are arranged on the wide driving edge.

[0014] Furthermore, the thickness of the wide driving edge is 1.5 times the thickness of the weight-reducing groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting multiple arc-surface protrusions, the cam machine has multiple driving points to improve work efficiency;

[0017] By providing an active positioning structure, not only the assembly stability of the cam disc body is enhanced, but also the overall load-bearing strength of the cam disc body is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of a cam in the prior art;

[0020] Figure 2 A three-dimensional diagram of the optimal embodiment of the cam machine with multiple top positions of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of the mutual abutment state of the limit block and the rectangular groove of the utility model;

[0022] Figure 4 This is a structural diagram of the optimal embodiment of the movable positioning structure of the utility model.

[0023] Among them, 100, cam disc body; 101, weight reduction groove; 102, weight reduction hole; 103, axial hole; 104, rectangular groove; 105, movable positioning structure; 1051, limit block; 1052, positioning column; 1053, chamfered surface; 106, wide driving edge; 107, arc surface raised part; 108, pin hole. DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] See also Figure 2 , Figure 2 This is a stereogram of the optimal embodiment of the multi-position cam machine of the utility model. Figure 2 As shown, at least one embodiment provides a multi-position cam machine, including: a cam disc body 100, on which an axial hole 103 and a plurality of pin holes 108 are formed, wherein the axial hole 103 is used to connect the cam disc body 100 and the drive shaft, and the pin holes 108 are used to assemble positioning pins. It should be further explained that all the pin holes 108 are arranged in a circle and have the same center as the axial hole 103.

[0026] Cam disc body 100

[0027] Please continue reading Figure 2 Combined with Figure 3 , Figure 3 This is a three-dimensional diagram of the state where the limit block and the rectangular groove of the utility model are in contact with each other. Figures 2 to 3As shown, in order to make the cam machine lighter as a whole and achieve energy-saving effects, a weight-reducing groove 101 and a weight-reducing hole 102 are provided on the cam disc body 100. The weight-reducing groove 101 is annular, and a weight-reducing hole 102 is provided on the weight-reducing groove 101. The weight-reducing hole 102 is a polygon, a circle, or a polygon directly combined with an arc, wherein the area of ​​the weight-reducing hole 102 is 1 / 8-1 / 2 of the area of ​​the cam disc body 100. The edge of the weight-reducing groove 101 forms a wide-surface driving edge 106, and a plurality of arc-surface protrusions 107 are provided on the wide-surface driving edge 106. The arc-surface protrusions 107 form a plurality of driving points. When the depth of the weight-reducing groove 101 is small, a good weight-reducing effect cannot be achieved. When the depth is large, the disc body will be unstable as a whole. Therefore, the thickness of the wide-surface driving edge 106 is 1.5 times the thickness of the position of the weight-reducing groove 101. The axial hole 103 is opened at the center position of the cam disc body 100, and the pin holes 108 are opened on the cam disc body 100 at equal intervals, and the distance between the center points of each pin hole 108 is equal. The inner wall of the axial hole 103 is opened with a rectangular groove 104 corresponding to the pin hole 108, and the pin hole 108 is connected with the axial hole 103 through a cylindrical hole, and the cylindrical hole is set on the side wall of the rectangular groove 104.

[0028] Active positioning structure 105

[0029] Please continue reading Figure 2 Combined with Figure 3 to Figure 4 , Figure 4 This is a structural diagram of the optimal embodiment of the active positioning structure of the utility model. Figures 2 to 4As shown, a movable positioning structure 105 is provided at the position of the cylindrical hole. The movable positioning structure 105 can be moved at the position of the cylindrical hole so that one end thereof extends into or out of the pin hole 108. The composition structure of the movable positioning structure 105 is described in detail below. The movable positioning structure 105 includes a limit block 1051, and the length and width of the limit block 1051 are consistent with the length and width of the rectangular groove 104. A positioning column 1052 is fixed on one side of the limit block 1051, and the positioning column 1052 is consistent with the positioning hole on the positioning pin. After the positioning column 1052 extends into the positioning pin, it forms an axial reinforcement structure with the hollow position of the cam disc body 100, further enhancing the load-bearing strength of the cam disc body 100; the positioning column 1052 and the limit block 1051 are an integrally formed structure. Part of the positioning column 1052 is arranged in the cylindrical hole. A chamfered surface 1053 is provided at one end of the positioning column 1052 away from the limit block 1051. When in use, adjust the specific position of the movable positioning structure 105, first insert the positioning pin into the pin hole 108, then push the positioning column 1052 into the positioning hole of the positioning pin, and then assemble the drive shaft to the axial hole 103. The outer wall of the drive shaft will match the inner contour of the axial hole 103, and the outer wall of the drive shaft will squeeze one side of the limit block 1051 to maintain the stability of the positioning pin. The presence of the positioning pin also makes the drive shaft assembly more secure, thereby effectively enhancing the assembly stability of the cam disc body 100.

[0030] In summary, by providing multiple arc-surface protrusions 107, the cam machine has multiple driving points to improve work efficiency; by providing the movable positioning structure 105, not only the assembly stability of the cam disc body 100 is enhanced, but also the overall load-bearing strength of the cam disc body 100 is improved.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-position cam machine, characterized in that: include: A cam disc body (100), wherein the cam disc body (100) is provided with an axial hole (103) and a plurality of pin holes (108), wherein the axial hole (103) is provided at the center position of the cam disc body (100), the pin holes (108) are provided at equal intervals on the cam disc body (100), and the center points of each pin hole (108) are at equal distances from the center points of the pin holes (108), the inner wall of the axial hole (103) is provided with a rectangular groove (104) corresponding to the pin hole (108), the pin hole (108) is connected to the axial hole (103) through a cylindrical hole, the cylindrical hole is provided on the side wall of the rectangular groove (104), and a movable positioning structure (105) is provided at the position of the cylindrical hole.

2. The multi-position cam machine according to claim 1, characterized in that: The movable positioning structure (105) comprises a limiting block (1051), and the length and width of the limiting block (1051) are consistent with the length and width of the rectangular groove (104).

3. The multi-position cam machine according to claim 2, characterized in that: A positioning column (1052) is fixed to one side of the limiting block (1051), and the positioning column (1052) and the limiting block (1051) are an integrally formed structure.

4. The multi-position cam machine according to claim 3, characterized in that: Part of the positioning column (1052) is arranged in the cylindrical hole.

5. The multi-position cam machine according to claim 4, characterized in that: A chamfered surface (1053) is provided at one end of the positioning column (1052) away from the limiting block (1051).

6. The multi-position cam machine according to claim 5, characterized in that: The positioning column (1052) matches the positioning hole on the positioning pin.

7. The multi-position cam machine according to claim 1, characterized in that: The cam disc body (100) is provided with a weight-reducing groove (101).

8. The multi-position cam machine according to claim 7, characterized in that: A weight-reducing hole (102) is provided on the weight-reducing groove (101), and the area of ​​the weight-reducing hole (102) is 1 / 8 to 1 / 2 of the area of ​​the cam disc body (100).

9. The multi-position cam machine according to claim 8, characterized in that: The edge of the weight-reducing groove (101) forms a wide driving edge (106), and a plurality of arc-surface protrusions (107) are arranged on the wide driving edge (106).

10. The multi-position cam machine according to claim 9, characterized in that: The thickness of the wide driving edge (106) is 1.5 times the thickness of the weight-reducing groove (101).

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