阅读说明：本技术 切断位置的确定方法、设备及系统 (Method, equipment and system for determining cutting-off position ) 是由 王山岗 张金璐 张显 郝尊崇 于 2019-08-29 设计创作，主要内容包括：本发明设计产品连续切断设备,特别提供了一种切断位置的确定方法、设备及系统,包括：获取待切断体上预设标识点的位置以及切断长度；基于所述预设标识点的位置以及所述切断长度,确定切断位置；获取相邻缺口之间的距离；其中,所述缺口形成在所述待切断体上；根据获取到的所述距离以及切断位置,在所述切断长度内确定所述待切断体上的最后一个预设缺口的位置；当最后一个预设缺口与所述切断位置之间的距离小于预设距离时,形成第一控制指令；其中,所述第一控制指令为停止在所述最后一个预设缺口的位置形成所述缺口；上述方法能够有效降低切断位置与待切断体上的缺口重合的可能性。(The invention relates to a product continuous cutting device, in particular to a method, a device and a system for determining a cutting position, which comprises the following steps: acquiring the position and the cutting length of a preset identification point on a body to be cut; determining a cutting-off position based on the position of the preset identification point and the cutting-off length; acquiring the distance between adjacent gaps; wherein the notch is formed on the body to be cut; determining the position of the last preset notch on the body to be cut within the cutting length according to the acquired distance and the cutting position; when the distance between the last preset notch and the cutting-off position is smaller than the preset distance, a first control instruction is formed; the first control instruction stops forming the notch at the position of the last preset notch; the method can effectively reduce the possibility of coincidence of the cutting position and the notch on the body to be cut.)

1. A method of determining a cut-off position, comprising:

acquiring the position and the cutting length of a preset identification point on a body to be cut;

determining a cutting-off position based on the position of the preset identification point and the cutting-off length;

acquiring the distance between adjacent gaps; wherein the notch is formed on the body to be cut;

determining the position of the last preset notch on the body to be cut within the cutting length according to the acquired distance and the cutting position;

when the distance between the last preset notch and the cutting-off position is smaller than the preset distance, a first control instruction is formed; and the first control instruction is to stop forming the notch at the position of the last preset notch.

2. The method of claim 1, further comprising:

and determining the position of the first notch on the next section of body to be cut based on the position of the last notch on the current section of body to be cut and the distance between the adjacent notches.

And cutting the current section of the body to be cut off from the body to be cut off along the cutting position.

3. The method according to claim 2, wherein the distance between the first gap on the next segment of the body to be cut and the last gap on the current segment of the body to be cut is a first preset multiple of the distance between the adjacent gaps; wherein the first preset multiple is greater than or equal to 2.

4. The method of claim 2, further comprising:

when the distance between the last preset notch and the cutting-off position is larger than or equal to the preset distance, a second control instruction is formed; and the second control instruction is to form the notch at the position of the last preset notch.

5. The method according to claim 4, wherein the distance between the first gap on the next segment of the body to be cut and the last gap on the current segment of the body to be cut is a second preset multiple of the distance between the adjacent gaps; wherein the first preset multiple is greater than or equal to 1.5.

6. The method of any one of claims 1-5, wherein the indentations are air holes.

7. A cut-off device, comprising:

a controller for performing the method of determining a cut-off position according to any one of claims 1 to 5;

and the cutting unit is connected with the controller and used for receiving the control instruction formed by the controller and executing corresponding operation.

8. The cutting apparatus according to claim 7, wherein the cutting unit includes: the cutter and the perforating device are respectively connected with the controller.

9. A severing system, characterized in that it comprises:

the first sensor is used for identifying a preset identification point on a body to be cut;

the second sensor is used for measuring the length of the body to be cut off;

the cut-off device of claim 7, connected to the first sensor and the second sensor.

Technical Field

The invention relates to the technical field of strip-shaped product cutting devices, in particular to a method, equipment and a system for determining a cutting position.

Background

Most of products extruded by the extruder are semi-finished products with longer length, and then the semi-finished products are cut. Various types of notches are usually arranged on the extruded semi-finished product; in the actual cutting process, if the cutting position is completely cut according to the actual length, the cutting position may fall at the notch, which affects the quality of the cross section of the product.

At present, chinese patent application publication No. CN103286817A discloses a method for manufacturing a fixed-length cutting punch for automobile sealing strips, which includes a pneumatic beam, end cutting tool holders manufactured at two ends of the pneumatic beam, and a punch arranged between the two end cutting tool holders, wherein the end cutting tool holders and the punch simultaneously cut and punch the automobile sealing strips along with the up-and-down movement of the pneumatic beam.

In the structure, the distance between the end cutting knife clamps at two ends of the pneumatic beam is the cutting distance of the to-be-cut body, 2-25 punching machines are arranged on the pneumatic beam, and in the processing process of the same batch of to-be-cut bodies, the quantity of the punching machines is fixed, the relative position relation between the punching machines and the pneumatic beam is kept unchanged, so that the structure is more suitable for controlling the to-be-cut bodies with single size models; if the size of the to-be-cut body changes, the number of the perforating machines and the position of the end cutting knife clamp need to be adjusted, the existing industry mostly adopts a manual adjustment mode according to scales, the adjustment process is complex and is easy to deviate, and particularly, under the condition that the length of the to-be-cut body is longer, the distance between the end cutting knife clamps on the corresponding equipment has a limit position, so that the to-be-cut body cutting process is difficult to adapt to various to-be-cut body cutting procedures with different specification requirements.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the phenomenon that the cutting position falls at the air vent and is difficult to be suitable for the bodies to be cut with a plurality of sizes in the prior art, thereby providing a hole-avoiding cutting method for the products with holes.

A method of determining a cut-off position, comprising:

acquiring the position and the cutting length of a preset identification point on a body to be cut;

determining a cutting-off position based on the position of the preset identification point and the cutting-off length;

acquiring the distance between adjacent gaps; wherein the notch is formed on the body to be cut;

determining the position of the last preset notch on the body to be cut within the cutting length according to the acquired distance and the cutting position;

when the distance between the last preset notch and the cutting-off position is smaller than the preset distance, a first control instruction is formed; and the first control instruction is to stop forming the notch at the position of the last preset notch.

The method further comprises the following steps:

and determining the position of the first notch on the next section of body to be cut based on the position of the last notch on the current section of body to be cut and the distance between the adjacent notches.

And cutting the current section of the body to be cut off from the body to be cut off along the cutting position.

The distance between the first gap on the next section of body to be cut and the last gap on the current section of body to be cut is a first preset multiple of the distance between the adjacent gaps; wherein the first preset multiple is greater than or equal to 2.

The method further comprises the following steps:

when the distance between the last preset notch and the initial cut-off position is larger than or equal to the preset distance, a second control instruction is formed; and the second control instruction is to form the notch at the position of the last preset notch.

The distance between the first gap on the next section of body to be cut and the last gap on the current section of body to be cut is a second preset multiple of the distance between the adjacent gaps; wherein the first preset multiple is greater than or equal to 1.5.

The gap is an air hole.

Another object of the present invention is to provide a cutting apparatus capable of avoiding the position of a notch on a body to be cut.

A cut-off device comprising:

a controller for performing the method of determining a cut-off position of any one of the preceding claims;

and the cutting unit is connected with the controller and used for receiving the control instruction formed by the controller and executing corresponding operation.

The cutting unit includes: the cutter and the perforating device are respectively connected with the controller.

Another object of the present invention is to provide a cutting system capable of avoiding the position of the notch on the body to be cut.

A severing system comprising:

the first sensor is used for identifying a preset identification point on a body to be cut;

the second sensor is used for measuring the length of the body to be cut off;

the cut-off device of the preceding claims, connected to said first sensor and to said second sensor.

The technical scheme of the invention has the following advantages:

1. the method for determining the cutting position comprises the steps of judging whether a notch is formed in the position of the lower cutter or not before the lower cutter is cut off, comparing the distance between the position of the lower cutter and the nearest notch with a preset distance, judging, and if the actually measured distance is smaller than the preset distance, temporarily enabling the cutter to be in a hovering state without cutting off the lower cutter so as to prevent the cutting position from falling at the notch or being too close to the notch to influence the strength of the cutting position. If the cutting position is too close to the notch, the notch is easier to deform under the action of the same force compared with other notches during later bonding, and the flatness of the bonding surface is influenced.

The method for determining the cutting position does not need to adjust the size of equipment according to the length of the actual body to be cut, can realize the cutting action only by a cutter capable of cutting, and is not easily influenced by the size of the body to be cut.

2. After the cutting method is applied, the cutting equipment provided by the invention can be suitable for processing the bodies to be cut with various sizes, and the possibility of overlapping or being too close to the notch during cutting is effectively reduced.

3. The cutting system comprises the sensors for identifying marks such as identification points, gaps and the like at each position on a body to be cut, and compared with the conventional manual punching, the cutting system is higher in precision; it is more convenient to clearly identify various marks on the body to be cut.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a flowchart of an operation method in embodiment 1 of the present invention;

FIG. 2 is a flowchart of an operating method in embodiment 2 of the present invention;

fig. 3 is a schematic diagram of a signal transmission direction in the apparatus according to embodiment 3 of the present invention;

fig. 4 is a schematic diagram of a signal transmission direction of a system in embodiment 4 of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

It should be noted that the body to be cut off in the embodiment of the present invention may be an automobile sealing strip, or may be a strip-shaped part such as a rubber hose, etc. extruded and molded by an extruder; the notch on the body to be cut off can be an air hole on the automobile sealing strip or a connecting hole. In the following description, a weather strip for a vehicle is taken as an example, wherein the notch is an air hole.