CN204565261U - A kind of tank mouth trimming device for metal can - Google Patents

Abstract

A can edge trimming device for metal cans, comprising a first knife (1) and a second knife (3), the first knife (1) is a circular knife; it is characterized in that: the second knife (3) is set On the top of the first knife (1), the axis of the second knife (3) is fixed relative to the axis of the first knife (1); the second knife (3) is a notch knife, and the notch knife There is a relief groove (32) on the outer edge of the knife; the cooperation between the second knife (3) and the first knife (1) has two working states: the cutting state and the loading and unloading state; the cutting state is the first The second knife (3) faces the first knife (1), that is, the blade (31) of the second knife (3) is in contact with the blade (11) of the first knife (1), and the loading and unloading state is the second Knife (3) leaves space between the first knife (1) and the second knife (3) and the first knife (1) with the groove (32). In the utility model, the axis centers of the two cutters can be fixed without moving, so the structure is simplified, the working reliability is improved, and the manufacturing and maintenance costs are greatly reduced.

Description

A can edge trimming device for metal cans

technical field

The utility model belongs to the field of metal can manufacturing equipment, in particular to a can edge trimming device for metal cans (two-piece cans made of iron, aluminum and other materials).

Background technique

Metal cans (two-piece cans made of iron, aluminum, etc.) are composed of a can lid and a can body. After the can body is stretched and formed, it must be cut in the height direction to make the height of the can body consistent and remove the can mouth. burrs, so the edge trimming device of the can mouth should be used.

For the more advanced and representative structures of the existing disclosed edge trimming devices for metal cans, reference can be made to US Patent No. 6,752,052. The trimming device disclosed in this patent includes a moving knife and a fixed knife, the moving knife and the fixed knife are disc-shaped knives, they are arranged tangentially; and the moving knife is connected with the rotating shaft of the moving knife, and the fixed knife is connected with The rotating shaft of the knife, the rotating shaft of the moving knife and the rotating shaft of the fixed knife are connected with the rotating power source; and a translation driving mechanism acts on the moving knife, so that the moving knife can perform radial translation relative to the fixed knife, so that the moving knife has two Working state: one is the cutting working state, the moving knife is in tangential contact with the fixed knife; the other is the loading and unloading working state, the moving knife is separated from the fixed knife. When working, first control the moving knife to the working state of loading and unloading, and place the can body on the moving knife or the fixed knife, and then control the moving knife to switch to the cutting working state. At this time, the blades of the moving knife and the fixed knife are all against the can body, and then start the rotating power source, so that the movable knife and the fixed knife rotate synchronously to complete the cutting of the can body, and finally control the movable knife to switch to the working state of loading and unloading, and remove the cut waste ring. The above-mentioned edge trimming device can complete the cutting of the can body well, but there are still the following deficiencies: the movable knife of the edge trimming device needs to move radially, and it is necessary to design a cam, a swing rod, a push rod, etc. Transmission components have many moving pairs and complex structures, resulting in high manufacturing and maintenance costs.

Contents of the invention

The purpose of the utility model is to provide a can edge trimming device for metal cans, so as to solve the problems in the prior art that there are too many kinematic pairs and complex structures, resulting in high manufacturing and maintenance costs.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a can edge trimming device for metal cans, including a first knife, a first knife shaft connected to the axis of the first knife, a second knife, and The second knife shaft connected to the second knife axis, the axes of the first knife and the second knife are parallel; the first knife is a circular knife, and its outer edge is a knife edge. Set the metal can body to be cut for sleeve; the first knife rotating shaft and the second knife rotating shaft are driven by a rotating power source; the second knife is arranged above the first knife, and the axis of the second knife The relative position of the axis center of the knife is fixed, and the line connecting the axis center of the second knife and the axis center of the first knife is perpendicular to the horizontal plane; the second knife is a notch knife, and the notch knife is on the outer edge of the circular knife A relief groove is provided so that the blade on the outer edge is cut off from head to tail, and the length of the blade of the second blade is equal to or greater than the circumference of the circumference of the metal can body to be cut; the first blade and the second blade The linear speed of rotation of the two knives is equal, and the cooperation between the second knife and the first knife has two working states: the cutting state and the loading and unloading state; the cutting state is that the second knife faces the blade with the blade The blade of the first knife, i.e. the second knife, is in contact with the blade of the first knife. The loading and unloading state is that the second knife’s step-off groove faces the first knife, that is, there is a space between the second knife and the first knife. .

In the above solution, the tank edge trimming device also includes a mounting seat and a cover plate, the first knife rotating shaft and the second knife rotating shaft are both rotatably supported on the mounting seat through bearings, and the head of the first knife rotating shaft Stretch outwards to connect the first knife, and a first gear is provided on its tail end; the head of the second knife shaft extends outwards to connect the second knife, and a second Gear, the second gear is meshed with the first gear for transmission; the cover plate is set on the side of the mounting seat corresponding to the tail end of the first knife shaft and the second knife shaft, so as to cover the first gear and the second gear ; The first knife shaft or the second knife shaft protrudes through the opening of the cover plate and is in transmission connection with the rotating power source.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

The utility model breakthroughly adopts a notch knife (that is, a knife with a gap) and a round knife to cooperate, and when the two knives rotate at the same linear speed, they naturally form two working states: cutting state and loading and unloading State, so that the axes of the two tools can be fixed without moving, thus saving the translation drive mechanism and transmission parts composed of cams, swing rods, push rods, etc., greatly reducing the number of motion pairs, thus simplifying the structure and improving work reliability. Production and maintenance costs are greatly reduced.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the cutaway of the utility model embodiment;

Fig. 2 is the schematic diagram of the front view of the utility model embodiment;

Fig. 3 is the right view diagram of Fig. 2;

Fig. 4 is the exploded schematic diagram of the utility model embodiment decomposition;

Fig. 5 is a schematic diagram of the first step of the working process of the utility model embodiment;

Fig. 6 is the second step state diagram of the working process of the utility model embodiment;

7 is a schematic diagram of the third step of the working process of the utility model embodiment;

Figure 8 is a schematic diagram of the fourth step of the working process of the utility model embodiment;

Fig. 9 is a schematic diagram of the fifth step of the working process of the embodiment of the present invention.

Among the above accompanying drawings: 1, the first knife; 11, blade; 2, the first knife rotating shaft; 21, spring; 3, the second knife; 31, blade; 32, give way groove; 4, the second knife rotating shaft; 5 , metal can body; 51, waste material ring; 6, mounting seat; 7, cover plate; 8, bearing; 9, first gear; 10, second gear.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: see Fig. 1-shown in Fig. 9:

A can edge trimming device for metal cans, as shown in Fig. The second knife rotating shaft 4 that the knife 3 axis is connected, the axis lines of the first knife 1 and the second knife 3 are parallel; the first knife 1 is a circular knife, and its outer edge is a knife edge 11. The metal can body 5 to be cut is set on the first knife 1.

1-4, the second knife 3 is arranged above the first knife 1, the axis of the second knife 3 is fixed relative to the axis of the first knife 1, and the axis of the second knife 3 The connection line with the axis of the first knife 1 is perpendicular to the horizontal plane, that is, the second knife 3 and the first knife 1 are arranged facing each other up and down.

Referring to Figures 1-4, the second knife 3 is a notch knife, and the notch knife is provided with a relief groove 32 on the outer edge of the circular knife, so that the blade 31 on the outer edge is cut off from head to tail. , and the length of the blade 31 of the second knife 3 must be equal to or greater than the circumference of the metal can body 5 to be cut, usually slightly greater than the circumference of the metal can body 5 to be cut.

Referring to Figures 1-4, the first knife shaft 2 and the second knife shaft 4 are driven by a rotating power source, so that the rotational speeds of the first knife 1 and the second knife 3 are equal, and the second knife 3 The cooperation with the first knife 1 has two working states: the cutting state and the loading and unloading state; the cutting state is that the second knife 3 faces the first knife 1, that is, the second knife 3 with the blade edge 31 is in contact with the blade 11 of the first knife 1, and the described loading and unloading state is that the second knife 3 leaves a space between the second knife 3 and the first knife 1 so that the groove 32 faces the first knife 1.

Specifically, as shown in Figures 1-4, the edge trimming device for metal cans also includes a mounting seat 6 and a cover plate 7, and the first knife shaft 2 and the second knife shaft 4 are both passed through bearings 8 Rotationally supported on the mounting base 6, the head of the first knife rotating shaft 2 protrudes outwards to connect the first knife 1, and a first gear 9 is provided on its tail end; the head of the second knife rotating shaft 4 The second knife 3 protrudes outwards to connect with it, and a second gear 10 is arranged on its tail end, and the second gear 10 is engaged with the first gear 9 for transmission. The cover plate 7 is set on the side of the mounting seat 6 corresponding to the tail end of the first knife shaft 2 and the second knife shaft 4, so as to cover the first gear 9 and the second gear 10; the first knife shaft 2 Or the second knife rotating shaft 4 protrudes through the opening of the cover plate 7 and is in transmission connection with the rotating power source. As shown in the figure, specifically, the first knife rotating shaft 2 protrudes through the opening of the cover plate 7 to connect to the rotating power source. The rotating power source here can be a motor, preferably a servo motor, which is omitted in the figure. Draw the rotating power source.

Refer to 1-4 for details, the first knife 1 is sleeved on the head of the first knife shaft 2, and a spring 21 acts on the first knife 1, and the force direction of the spring 21 is to push the first knife outward. Knife 1, so that the first knife 1 has the elastic force to retreat inward.

In the present embodiment, for example, the circumference of the circumference of the metal can body 5 to be cut is 66 mm, and the circumference of the second knife 3 is designed to be 100 mm at this time, and the length of the blade 31 on the second knife 3 accounts for its circumference. 2/3, namely 66.67mm, namely the length of the blade 31 of the second knife 3 is slightly larger than the circumference of the circumference of the metal can body 5 to be cut.

The working process of this embodiment is as follows, as shown in Figure 5-9:

During the whole process, the first knife 1 and the second knife 3 are driven by the rotating power source to perform continuous rotational motion.

The first step, as shown in Figure 5: the first knife 1 and the second knife 3 are in the state of loading and unloading, that is, the first knife 1 is facing the second knife 3 with the gap 32, and now it starts to move towards the second knife 3. One knife 1 is placed on the body 5 of the metal can to be cut, that is, the material is loaded.

The second step, as shown in Figure 6: during the period when the first knife 1 and the second knife 3 are in the feeding and unloading state, put the metal can body 5 to be cut on the first knife 1, and the metal can to be cut The body 5 is set in place, and the loading is completed.

The third step, as shown in Figure 7: the first knife 1 and the second knife 3 are transferred to the cutting state, the blade 11 of the first knife 1 and the blade 31 of the second knife 3 are in contact with each other and the can of the metal can body 5 The mouth is cut for a week.

The fourth step, as shown in Figure 8: the first knife 1 and the second knife 3 are transferred to the loading and unloading state, that is, when the first knife 1 is facing the second knife 3 with the relief groove 32, it is metal at this time. The can opening cutting of the can body 5 is completed, and the cut waste ring 51 is hung on the first knife 1.

The fifth step, as shown in FIG. 9 : while the first knife 1 and the second knife 3 are in the loading and unloading state, remove the waste ring 51 from the first knife 1 , that is, unloading.

In the sixth step, the first knife 1 and the second knife 3 continue to rotate, and after the first knife 1 idles for a circle, return to the first step to process the next metal can body 5 .

This embodiment is used for the edge trimming device of metal cans, which can be equipped with supporting devices such as can pushing equipment to position the metal can body 5 during cutting, and to complete the work of automatic feeding and unloading.

The utility model breakthroughly adopts a notch knife (that is, a knife with a gap) and a round knife to cooperate, and when the two knives rotate at the same linear speed, they naturally form two working states: cutting state and loading and unloading State, so that the axes of the two tools can be fixed without moving, thus saving the translation drive mechanism and transmission parts composed of cams, swing rods, push rods, etc., greatly reducing the number of motion pairs, thus simplifying the structure and improving work reliability. Production and maintenance costs are greatly reduced.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (2)

1. the tank mouth trimming device for metal can, the the second swivel axle (4) comprise the first cutter (1), the first swivel axle (2) be connected with the first cutter (1) axle center and the second cutter (3), being connected with the second cutter (3) axle center, the axis parallel of described first cutter (1) and the second cutter (3); Described first cutter (1) is circular knife, and its outer rim one week is blade (11), and described first cutter (1) is upper for being nested with metal can body (5) to be cut; Described first swivel axle (2) and the second swivel axle (4) are driven by a rotating power source; It is characterized in that:

Described second cutter (3) is located at the top of the first cutter (1), and the axle center of the second cutter (3) and the axle center relative position of the first cutter (1) are fixed, and the line in the axle center of the axle center of the second cutter (3) and the first cutter (1) is perpendicular to horizontal plane; Described second cutter (3) is breach cutter, this breach cutter is in the outer rim of circular knife, be provided with a slot to make way (32), to make the blade in its outer rim (31) disconnect end to end, and blade (31) length of this second cutter (3) is equal to or greater than the girth of the periphery of metal can body (5) to be cut; The linear velocity of described first cutter (1) and the second cutter (3) is equal, and described second cutter (3) has two duties with coordinating of the first cutter (1): cut state and material loading blanking state; The described state that cuts is that described second cutter (3) contacts with the blade (11) of the first cutter (1) facing to the first cutter (1) i.e. blade (31) of the second cutter (3) with blade, and described material loading blanking state is that the second cutter (3) namely leaves space between the second cutter (3) and the first cutter (1) with slot to make way (32) facing to the first cutter (1).

2. according to claim 1 for the tank mouth trimming device of metal can, it is characterized in that: also comprise a mount pad (6) and a cover plate (7), described first swivel axle (2) and the second swivel axle (4) all through bearing (8) rotating support on mount pad (6), described first cutter (1) of the protruding connection of described first swivel axle (2) head, and its tail end is provided with one first gear (9); Described second cutter (3) of the protruding connection of described second swivel axle (4) head, and its tail end is provided with one second gear (10), this second gear (10) is meshed with the first gear (9) transmission; Described cover plate (7) is covered on the side of the corresponding first swivel axle (2) of mount pad (6) and the second swivel axle (4) tail end, with this by the first gear (9) and the second gear (10) capping; Described first swivel axle (2) or the second swivel axle (4) stretch out through the perforate of described cover plate (7) and are in transmission connection with described rotating power source.