CN116118272A - Carton production method - Google Patents

Abstract

The invention relates to a carton production method, which is suitable for the field of carton industry. In order to solve the problem of low production efficiency in the traditional carton production process, the present invention provides a carton production method, which is characterized in that it includes the following steps: the first step is to select the cardboard; the second step is to locate the glue on the cardboard The third step is to apply glue to the cardboard; the fourth step is to slot or die-cut the cardboard. Through the above method, the production efficiency can be greatly improved, the failure rate can be reduced, and the above-mentioned problems that it is difficult to apply glue to the collapsed part of the edge of the cardboard and the edge is easy to warp at the fracture of the tape are solved.

Description

A kind of carton production method

technical field

The invention relates to the field of carton industry, in particular to a carton production method.

Background technique

Cartons, or cartons and paper bags, are commonly used products in modern society, and their production methods have been gradually industrialized. All three are made of cardboard, the difference lies in the thickness and stiffness of the cardboard. For the convenience of expression, the cartons described below include cartons and paper bags, and the cartons described in all technical solutions of this patent include cartons and paper bags. In the existing carton production process, slotting is generally used first (for conventional cartons, cut a specific slot with a knife template at a specific part to obtain a carton expansion template) or die cutting (for special-shaped cartons, put a rectangular cardboard into the die-cutting Through the extrusion of the knife template in the machine, the carton unfolding template is pressed out on the rectangular cardboard, and one or more carton unfolding templates can be obtained by one press, depending on the size of the rectangular cardboard and the distribution of the blades in the die-cutting machine) The process of applying glue has the following disadvantages: first, the carton expansion templates after slotting or die-cutting need to be glued one by one through the glue applicator, so that the efficiency of pasting one by one is low; second, due to the slotting or die cutting first Squeeze the glue after cutting. The length of the tape must be the same as the length of the part that needs to be glued on the slotted or die-cut carton unfolding template. This requires debugging parameters such as sensors and motor speeds. The shape of the slotted or die-cut carton unfolding template is irregular, and it is easy to collide with the equipment, resulting in deviation of the carton unfolding template, wrong gluing position, increased failure rate, and delays in production efficiency; third, slotted or die-cut cardboard The edge will be collapsed and shriveled due to the pressure received during slotting or die-cutting, and it will be difficult to fully apply glue to this part during subsequent gluing, which will cause the tape on the edge of the carton to warp, whether using self-adhesive or scraping The same is true for glue and glue spraying. Because glue scraping and glue spraying are glued first and then cellophane, etc., the edge of the cellophane is more serious.

Contents of the invention

The purpose of the invention is to provide a carton production method to improve production efficiency.

Concrete technical scheme of the present invention is as follows:

A kind of carton production method, comprises the steps:

The first step is to select the cardboard;

The second step is to locate the part that needs to be glued on the cardboard;

The third step is to paste glue on the cardboard;

The fourth step is to slot or die cut the cardboard.

Note: Gluing in this plan includes but is not limited to: one-step method: directly stick self-adhesive, double-sided tape; two-step method: first apply solid or liquid glue, and then stick cellophane and other tape paper. Gluing first and then slotting or die-cutting reduces the accuracy of the length of the glue. Specifically, it can be the same or slightly longer than the required length, and can even be used from the beginning to the end of the cardboard that has not been slotted or die-cut. The tails are glued because the excess can be cut off during the notching or die-cutting step, and the cut edge of the tape remains exactly the same as the cut edge of the underlying cardboard in the final product. The reduction in requirements shortens the time for commissioning machines and equipment and increases production efficiency. In addition, in the case that multiple cartons can be cut out of a rectangular cardboard to expand the template, in the traditional solution, it is necessary to glue the cut cartons one by one. To make it work at the same time, it can also be glued from the beginning to the end on a cardboard that has not been grooved or die-cut) Applying glue to a multi-piece carton unfolded template part on a cardboard that has not yet been grooved or die-cut, the efficiency is further improved promote. And this kind of cardboard that has not been slotted or die-cut can use a uniform large rectangular board. Compared with the carton unfolding template with extremely irregular shapes, the probability of collision with the equipment is greatly reduced, the failure rate is reduced, and the production efficiency is improved. . At the same time, because the glue is applied on the rectangular cardboard first, and then the slotting or die-cutting is performed, when the blade falls and squeezes during slotting or die-cutting, the tape and the cardboard below it will be pressed down together, and the tape and the cardboard will always remain Paste together, thus eliminating the problem of tape curling.

Further, the positioning in step 2 is manual positioning.

Note: Even if it is manual positioning, if the third and fourth steps are implemented after positioning, it still falls within the scope of protection; manual positioning includes the use of film or other transparent materials for positioning.

Further, the second step and the third step are completed on the same assembly line, and the positioning in the second step is automatically positioned by presetting the parameters of each component in the assembly line.

Note: Compared with manual positioning, automatic positioning is more in line with the requirements of industrial automation production, and it is more common in factories. The so-called assembly line includes a conveying device that can move the cardboard forward, a sensing device that can sense the cardboard on the conveying device, a PLC that can receive information from the sensing device and make corresponding instructions, and a tape machine that can receive the PLC According to the instruction sent, the vertical height of the glue port in the tape machine and the distance perpendicular to the forward direction of the conveyor belt can be adjusted, and together with other components, it can realize the positioning of the glue sticking part for a specific size cardboard.

Further, the glue sticking in the step 3 is pasting self-adhesive, or the glue is first attached to the adhesive tape and then the adhesive tape is pasted on the cardboard.

Note: Tape paper is cellophane or release paper.

Further, the gluing in step 3 is pasting adhesive tape after gluing.

Preferably, the gluing is squeegee glue and/or spray glue.

Further, in the fourth step, the cardboard is grooved or die-cut to obtain a carton unfolding template.

Note: In this solution, although the technical advantage of being able to glue multiple carton expansion formwork parts on a piece of cardboard that has not been grooved or die-cut at one time and further improving efficiency cannot be realized, it can still prevent tape warping and The advantages of reducing machine adjustment time and improving work efficiency.

Further, in the fourth step, the cardboard is grooved or die-cut to obtain more than two carton expansion templates.

Note: In this solution, on the basis of the previous solution, the technical advantage of being able to glue the unfolded template parts of multiple cartons on a piece of cardboard that has not been slotted or die-cut at one time, and the efficiency is further improved.

Further, the positioning in step 2 needs to locate the position on the cardboard that needs to be glued by the position of the blade.

Note: The purpose of positioning is to stick the tape on the part of the cardboard that needs to be glued. The edges of these parts along the moving direction of the conveyor belt need to be cut off by the knife roller (during the slotting process) or the blade on the knife template (during the die-cutting process). Therefore, it is necessary to locate the position on the cardboard that needs to be glued by the position of the blade.

Further, the slotted cardboard in step 4 is then subjected to a die-cutting process to obtain a tear tape.

Note: Some cartons need to be equipped with tear tape (two parallel dotted-line holes are printed on the carton, and one end can be pinched and pulled to the other end to separate the two sides of the tear tape). The pull tape also needs to go through the die-cutting process to obtain the tear tape, including circular die-cutting (similar to the knife roller of the slotting machine, which is cylindrical as a whole, with blades on its surface, which rotate around its own axis and pass through it surface cardboard for cutting and engraving).

In the case of attaching the glue to the tape first and then sticking the tape on the cardboard, or in the case of pasting the tape after gluing, the length of the glue in some areas is less than the length of the tape, making the groove or No glue gets on the blade when die cutting.

Note: The inventor found in the actual operation process that when the adhesive tape is as long as the glue below it, in the process of slotting or die-cutting, pressing down the blade will inevitably cut the tape and the glue below it. In this way, the tape and the cardboard below it can be pressed down together, and the tape and the cardboard are always pasted together, thus eliminating the problem of tape curling, but this brings a new problem, that is, there will be left on the blade. There is residual glue, and the residual glue on it accumulates more and more, which affects the normal work of the blade, and the production has to be suspended, cleaned or replaced before the production can continue. This brings about a contradiction: if you want to eliminate the problem of tape curling, you need to clean or replace the blade, which will lead to a decrease in production efficiency; if you want to improve production efficiency, you need to avoid blade sticking. Under the current technical conditions, only This can be achieved by avoiding the blade from cutting into the glued part. Therefore, the inventor chose not to apply glue to a short portion of the tape that the blade will press down, that is, there is only tape paper, and there is no glue below the tape paper. Specifically, the length of the glue is slightly shorter than the length of the tape paper on it. , such as 3-5mm shorter, in this way, the blade will not cut the glue, and the edge of the tape will not be too serious, which is a compromise.

Beneficial effects: firstly, the time for debugging machine equipment is greatly shortened, and the production efficiency is greatly improved; secondly, in the case where a plurality of carton expansion templates can be cut out of one rectangular cardboard, one piece of ungrooved or Glue is applied to the unfolded formwork of multiple cartons on the die-cut cardboard, which further improves the efficiency; thirdly, it effectively solves the problems that it is difficult to glue the collapsed part of the edge of the cardboard and the edge of the tape is easy to warp in the traditional process.

Implementation

Embodiment 1: a kind of carton production method, comprises the steps:

The first step is to select the cardboard;

The second step is to locate the part that needs to be glued on the cardboard;

The third step is to paste glue on the cardboard;

The fourth step is to slot or die cut the cardboard.

Gluing in this solution includes but is not limited to: one-step method: directly paste self-adhesive, double-sided tape; two-step method: first apply solid or liquid glue, and then paste cellophane and other tape paper. Gluing first and then slotting or die-cutting reduces the accuracy of the length of the glue. Specifically, it can be the same or slightly longer than the required length, and can even be used from the beginning to the end of the cardboard that has not been slotted or die-cut. The tails are glued because the excess can be cut off during the notching or die-cutting step, and the cut edge of the tape remains exactly the same as the cut edge of the underlying cardboard in the final product. The reduction in requirements shortens the time for commissioning machines and equipment and increases production efficiency. In addition, in the case that multiple cartons can be cut out of a rectangular cardboard to expand the template, in the traditional solution, it is necessary to glue the cut cartons one by one. To make it work at the same time, it can also be glued from the beginning to the end on a cardboard that has not been grooved or die-cut) Applying glue to a multi-piece carton unfolded template part on a cardboard that has not yet been grooved or die-cut, the efficiency is further improved promote. And this kind of cardboard that has not been slotted or die-cut can use a uniform large rectangular board. Compared with the carton unfolding template with extremely irregular shapes, the probability of collision with the equipment is greatly reduced, the failure rate is reduced, and the production efficiency is improved. . At the same time, because the glue is applied on the rectangular cardboard first, and then the slotting or die-cutting is performed, when the blade falls and squeezes during slotting or die-cutting, the tape and the cardboard below it will be pressed down together, and the tape and the cardboard will always remain Paste together, thus eliminating the problem of tape curling.

Embodiment 2: On the basis of Embodiment 1, the positioning in step 2 is manual positioning.

In this scheme, even if it is manual positioning, if the third and fourth steps are implemented after positioning, it still falls within the scope of protection.

Embodiment 3: On the basis of Embodiment 1, the second step and the third step are completed on the same assembly line, and the positioning in step 2 is automatically positioned by presetting the parameters of each component in the assembly line.

In this solution, compared with manual positioning, automatic positioning is more in line with the requirements of industrial automation production, and it is more common in factories. The so-called assembly line includes a conveying device that can move the cardboard forward, a sensing device that can sense the cardboard on the conveying device, a PLC that can receive information from the sensing device and make corresponding instructions, and a tape machine that can receive the PLC According to the instruction sent, the vertical height of the glue port in the tape machine and the distance perpendicular to the forward direction of the conveyor belt can be adjusted, and together with other components, it can realize the positioning of the glue sticking part for a specific size cardboard.

Embodiment 4: On the basis of Embodiment 1, the glue sticking in step 3 is pasting self-adhesive, or the glue is first attached to the adhesive tape and then the adhesive tape is pasted on the cardboard.

In this scheme: tape paper is cellophane or release paper.

Embodiment 5: On the basis of Embodiment 1, the adhesive tape in Step 3 is pasted with adhesive tape after gluing.

Embodiment 6: On the basis of Embodiment 5, the gluing is squeegee glue and/or spray glue.

Embodiment 7: On the basis of Embodiment 1, a carton expansion template is obtained after the cardboard is notched or die-cut in the fourth step.

In this solution, although the technical advantage of being able to glue multiple carton expansion templates on a piece of cardboard that has not been slotted or die-cut at one time and further improve efficiency cannot be realized, it can still prevent the tape from warping and reduce adjustments. Machine time, the advantages of improving work efficiency.

Embodiment 8: On the basis of Embodiment 1, more than two carton expansion templates are obtained after the cardboard is notched or die-cut in the fourth step.

In this solution, on the basis of the previous solution, the technical advantage of being able to apply glue to the expanded template parts of multiple cartons on a piece of cardboard that has not been slotted or die-cut at one time, and the efficiency is further improved.

Embodiment 9: On the basis of Embodiment 1, the positioning in step 2 needs to locate the position on the cardboard to be glued by the position of the blade.

In this scheme, considering that the purpose of positioning is to stick the tape on the parts of the cardboard that need to be glued, the edges of these parts along the moving direction of the conveyor belt need knife rollers (in the slotting process) or knife templates (in the die-cutting process) The upper blade cuts off, so it is necessary to locate the position on the cardboard that needs to be glued by the position of the blade.

Embodiment 10: The cardboard that has been grooved in step 4 is then subjected to a die-cutting process to obtain a tear tape.

In this solution, some cartons need to be equipped with tear tape (two parallel dotted-line holes are printed on the carton, and one end can be pinched and pulled to the other end to separate the two sides of the tear tape). To get the tear tape, you also need to go through the die-cutting process to obtain the tear tape, including round die cutting (similar to the knife roller of the slotting machine, which is cylindrical as a whole, with blades on its surface, rotating around its own axis and Cutting, engraving through the cardboard on its surface).

Embodiment 11: In the case of first attaching the glue to the adhesive tape and then pasting the adhesive tape on the cardboard, or when the adhesive tape is attached after gluing, the length of the glue in some areas is less than the length of the adhesive tape. Keeps the blade free of glue when grooving or die-cutting.

In this solution, the inventor found in the actual operation process that when the adhesive tape is as long as the glue below it, in the process of slotting or die-cutting, pressing down the blade will inevitably make the tape paper and the glue below it together Cut it open, so that the tape and the cardboard below it can be pressed down together, and the tape and the cardboard are always stuck together, thus eliminating the problem of tape curling, but this brings a new problem, that is, on the blade There will be residual glue, and the residual glue on it will accumulate more and more, which will affect the subsequent normal work of the blade, and the production has to be suspended, cleaned or replaced before the production can continue. This brings about a contradiction: if you want to eliminate the problem of tape curling, you need to clean or replace the blade, which will lead to a decrease in production efficiency; if you want to improve production efficiency, you need to avoid blade sticking. Under the current technical conditions, only This can be achieved by avoiding the blade from cutting into the glued part. Therefore, the inventor chose not to apply glue to a short portion of the tape that the blade will press down, that is, there is only tape paper, and there is no glue below the tape paper. Specifically, the length of the glue is slightly shorter than the length of the tape paper on it. , such as 3-5mm shorter, in this way, the blade will not cut the glue, and the edge of the tape will not be too serious, which is a compromise.

The above disclosures are only preferred embodiments of the present invention, but are not intended to limit itself. Any changes and modifications made by those skilled in the art without violating the spirit of the present invention should fall within the scope of the present invention. within the scope of protection.

Claims (10)

1. a carton production method, is characterized in that, comprises the steps: The first step is to select the cardboard; The second step is to locate the part that needs to be glued on the cardboard; The third step is to paste glue on the cardboard; The fourth step is to slot or die cut the cardboard. 2. The carton production method according to claim 1, characterized in that the positioning in step 2 is manual positioning. 3. The carton production method according to claim 1, wherein the second step and the third step are completed on the same assembly line, and the positioning in step 2 is automatically positioned by presetting the parameters of each component in the assembly line. 4. The carton production method according to claim 1, characterized in that, the gluing in step 3 is pasting self-adhesive, or first attaching the glue to the adhesive tape and then pasting the adhesive tape on the cardboard. 5. The carton production method according to claim 1, characterized in that the gluing in step 3 is pasting adhesive tape after gluing. 6. The carton production method according to claim 5, characterized in that the gluing is scraping and/or spraying. 7. The method for producing a carton according to claim 1, characterized in that, the cardboard is slotted or die-cut to obtain a carton unfolding template. 8. The carton production method according to claim 1, characterized in that, the positioning in step 2 needs to locate the position on the cardboard to be glued by the position of the blade. 9. The carton production method according to claim 1, characterized in that, the cardboard that has been grooved in step 4 is then subjected to a die-cutting process to obtain a tear tape. 10. The carton production method according to claim 4 or 5, characterized in that, when the glue is first attached to the adhesive tape and then the adhesive tape is pasted on the cardboard, or the adhesive tape is pasted after gluing In some cases, the length of the glue in some areas is less than the length of the tape, so that the blade will not stick to the glue when slotting or die-cutting.