CN204605003U - Be provided with the carton die-cutting machine of jack unit - Google Patents

Abstract

The utility model relates to a carton die-cutting machine provided with a top-pressing device, comprising main frames located on both sides, die-cutting rollers, knife mold sticks arranged in parallel between the main frames on both sides, and shaft extension ends at both ends of the die-cutting rollers It is installed on the main frame through the rotation of the bearing mechanism; the die-cutting roller can rotate radially and float and is installed on the side of the die-cutting roller; it also includes pressing devices respectively arranged on the main frame on both sides, and the pressing device is provided with A pulley capable of rolling is pressed against the shaft end of the die-cutting roller, and the die-cutting roller is located between the pressing device and the die-cutting roller. In this way, the two shaft extension ends of the die-cutting roller can be pressed by means of the pulley rolling top, which can limit the floating amount of the die-cutting roller, thereby stabilizing the production running gap between the blade of the knife and the die-cutting roller, so that the knife can cut the cardboard more easily , not only improves the cutting efficiency of the roll-type die-cutting machine itself, but also greatly improves the stability of the work.

Description

Carton die-cutting machine with top pressing device

technical field

The utility model relates to a carton die-cutting machine, in particular to a machine which adopts die-cutting technology on an automatic production line and can continuously cut cardboard to form cartons. This kind of carton machine can use a flat knife to cut cardboard, so that not only can a straight carton knife edge (cutting edge) be obtained, but also the production efficiency of the flat knife carton can be greatly improved.

Background technique

The existing automatic carton production is divided according to the type of cutter or the type of cutting edge of the carton, mainly including serrated knives and flat knives. The serrated knife refers to a knife with a serrated edge, and the flat knife is a knife with a straight edge without serrations. The edge (cutting edge) of the existing flat knife carton is flat but the cost is high so it can only be applied to high-end gift box products, while the knife edge (cutting edge) of the serrated knife carton is relatively rough so it is mainly applied to low-grade packaging boxes such as beer boxes, Fruit boxes, cargo transfer boxes, etc. The cost of carton production of the two types of knives is obviously high and low, mainly because they need to adopt different processes and carton machines.

Existing carton production machines are mainly divided into two types. The first one adopts the roll-pressing die-cutting technology, that is, the carton die-cutting technology, and the second one adopts the die-pressing technology.

The rolling die-cutting technology mainly uses two rollers distributed up and down, that is, the upper roller and the lower roller to rotate relative to each other to realize die-cutting. The die-cutting speed can reach about 250 m/min at present. For this reason, the production efficiency is relatively High cost and low cost. A serrated knife is installed on the lower roller through a knife template, and a high-strength rubber cushion is installed on the upper roller. The cushion is equivalent to a chopping board but is not easy to be cut. When the cardboard passes through When between the upper roller and the lower roller, the serrated knife cuts the cardboard to form the cutting edge of the carton, and at the same time, the blade part of the serrated knife is also partially inserted into the cushion to completely cut off the cardboard cutting edge. Although the existing rolling die-cutting machines have high production speed and high efficiency, they all adopt serrated knives instead of flat knives, and need to frequently replace expensive cushion parts; The reason is that if a flat knife is used, the upholstery components are more easily damaged by leaving a continuous slit on the upholstery and the flat knife itself cannot cut the cardboard on the upholstery, to say the least Very tough. For this reason, if the serrated knife is replaced with a flat knife, it is not only necessary to cancel the cushion to allow the flat knife to directly press the metal stick part of the upper roller, but it will also affect the blade of the flat knife and the upper roller. The spacing requirements between them are very strict, and the best mode is that the spacing between them is zero or substantially close to zero, so that neither the blade of the flat knife will be damaged nor the upper roller will be scratched, and the cardboard can be easily cut off. However, although this cutting principle is easy to think of, the specific implementation plan has not yet been found a suitable simple method to realize it, resulting in no one in the industry using a flat knife to produce cartons on a die-cutting machine.

In order to solve the problem of utilizing the flat knife to produce cartons, the prior art mainly adopts the molding technology. The mold pressing technology mainly uses the upper and lower molds to move up and down to realize the top pressure cutting of the cardboard, that is, the flat knife is installed on the upper mold, and the lower mold is a relatively soft metal plate such as an aluminum plate or a lead plate. After laying the cardboard on the lower die manually or by machine, the flat knife is driven by the upper die to move down to press the cardboard and the lower die to cut the cardboard to form a carton. The biggest problem of this process is that it cannot realize uninterrupted conveying of cardboard, and the molding speed can only reach about 120 m/min at present. Therefore, the production efficiency is significantly lower than that of the rolling production process, resulting in very high production costs, and it is also prone to In case of a safety accident, the cutter is also very easy to become blunt and damaged because it needs to directly hit the lower die every time.

Utility model content

Now the applicant has successfully developed the technique of how to reliably adjust the gap between the cutter and the die-cutting roller so as to design a carton die-cutting machine capable of cutting cardboard with a flat knife. However, after repeated observations and experiments, it was found that due to the rigid top pressure cutting mode between the flat knife and the die-cutting roller, in the process of cutting the cardboard by the flat knife, it is inevitable that the cardboard will be cut against the die-cutting. The roller forms a reverse top pressure so that there is a gap drift phenomenon in the die-cutting roller. And because the gap that should be set between the flat knife and the die-cutting roller is not only very small and close to zero, but also needs this basically zero gap state to have good working stability, otherwise the cardboard is not easy to be cut and then Prone to waste. For this reason, it is necessary to further improve the cutting efficiency and working stability of the roll-type die-cutting machine.

In order to achieve the above-mentioned technical purpose, the utility model proposes a carton die-cutting machine provided with a pressing device, which includes main frames located on both sides, die-cutting rollers and die cutters arranged between the main frames on both sides in parallel. The shaft extension ends at both ends of the die-cutting roller are rotatably arranged on the main frame through a bearing mechanism; it is characterized in that the die-cutting roller can rotate radially and float and is arranged on the side of the die-cutting roller; It also includes pressing devices respectively provided on the main frames on both sides, and the rolling pulleys are arranged on the pressing devices, and the pulleys are pressed against the shaft extension ends of the die-cutting rollers. The die-cutting roller is located between the pressing device and the die-cutting roller.

Wherein, the die-cutting roller can also be called a hard stick, which mainly plays a role similar to an anvil; the bearing mechanism provided on the shaft extension ends at both ends of the die-cutting roller can be the shaft extension and the frame. The sliding bearing structure formed directly between them can also be a rolling bearing mechanism specially set between them.

Wherein, the knife mold stick mainly installs knives through the knife template, wherein the knife template is generally a semicircular plank, on which a knife is installed and positioned, and a pair of semicircular knife templates are buckled to the On the metal stick of the knife mold stick described above. The die-cutting roller and the die-cutting roller are arranged parallel to each other, but there is a space between them for setting the cutter and allowing the cardboard to pass through. The parallel mentioned here mainly refers to their rotation centers Axes are parallel. The cutter for cutting cardboard can be installed and positioned on the die roll through the die plate, so that when the die roll and the die-cutting roller rotate relative to each other, the cardboard located therein can be cut to form a usable carton. In a specific embodiment, the die rollers may be located below, above or left to right between the die-cutting rollers. However, as a relatively easy control mode, it is preferable to arrange the die-cutting roller directly below the die-cutting roller. A flat knife is installed on the cutting work area of the die-cutting roller. In order to improve the service life of the die-cutting roller, the cutting work area of the die-cutting roller is set as a metal bachelor, and The outer surface is plated with a hard metal layer such as metal chromium Cr. Of course, the sawtooth knife can still be installed on the said die stick of the utility model solution, but the sawtooth height of the sawtooth knife should be as small as possible.

Wherein, the die-cutting roller can rotate radially and float and is arranged on the side of the die-cutting roller, which means that the die-cutting roller can not only rotate but also float radially relative to the die-cutting roller, That is, the radial distance between the die-cutting roller and the die-cutting roller is adjustable, and the radial position of the die-cutting roller is adjustable through an adjusting mechanism.

According to above-mentioned technical scheme, for this reason, its beneficial technical effect is:

1. In the process of the cutter cutting the cardboard and pressing the die-cutting roller in reverse, the thickness of the cardboard, the material, the impurities in the cardboard, the sharpness of the blade and other changing factors exist, so that the reverse pressing force is Unbalanced and then cause the die-cutting roller to drift, but by means of the pulley rolling to press the two shaft extension ends of the die-cutting roller, the floating amount of the die-cutting roller can be limited, greatly reducing the The unbalanced reverse pressure or the uncertain and irregular radial floating drift of the die-cutting roller due to the gap and uneven gap of the bearing mechanism itself can further control the debugging gap and production operation before production The gap during production is basically the same, and it can also be further adjusted during production operation to stabilize the production operation gap between the blade of the knife and the die-cutting roller, so that the knife can cut the cardboard more easily (that is, the so-called easy meat), not only improves the cutting efficiency of the roller-type die-cutting machine, but also greatly improves the stability of the work.

2. It can eliminate the gap error change caused by the wear and aging of the bearing mechanism, so that not only the accuracy requirements of the bearing mechanism can be reduced, but also a relatively cheap bearing mechanism can be used.

3. On the frame on both sides, one of the pressing devices can press the two shaft extension ends of the die-cutting roller respectively, so that the two pressing devices can be used to press the die-cutting roller on the die The two ends of the cutting roller respectively adjust the gap between the blade of the cutter and the die-cutting roller, which can not only overcome the error of the bearing mechanism on both sides, but also overcome the different wear states on both sides, so that the working gap is in the The die-cutting rolls are axially consistent.

4. Since the pulley and the shaft extension end of the die-cutting roller roll against each other, the wear of the pulley on the shaft extension end of the die-cutting roller can be greatly reduced.

A further technical solution may also be that a bush corresponding to the pulley is provided on the shaft extension end of the die-cutting roller, and the pulley presses against the bush, and the bush is tightly held on the On the shaft end of the die-cutting stick.

Wherein, the bushing is a component that is independent from the axial extension end of the die-cutting roller and tightly hugged on the axial extension end of the die-cutting roller. The bushing is made of materials with relatively high wear resistance, such as red copper and synthetic steel. In fact, the bushing can be said to be a protective sleeve for the axial extension end of the die-cutting roller, which prevents the pulley from directly contacting the axial extension end of the die-cutting roller to cause wear on the die-cutting roller. When the bushing is worn out, the bushing can be disassembled for replacement, which not only saves maintenance costs but also facilitates maintenance.

A further technical solution may also be that the bushing is a split ring, and the two ends of the opening are connected by screws or fastened by tie hoops. Wherein, when the two ends of the opening are connected by screws or fastened by a tie, it is necessary not to form an obstacle to the cooperation between the pulley and the bush.

A further technical solution may also be that the pressing device includes an outer casing capable of being connected to the main frame, a movable frame arranged in the outer casing for moving, and a driver capable of driving the movable frame to move down, so The pulley is connected to the lower end of the mobile frame.

A further technical solution may also be that the driver is directly screwed on the outer casing, and the driver abuts against the top of the moving frame. In this way, the up and down movement of the pulley can be adjusted by means of the driver, thereby adjusting the pressing force of the pulley on the shaft extension end of the die-cutting roller.

A further technical solution may also include a pulley bracket arranged at the lower end of the moving frame, and the pulley is arranged on the pulley bracket.

A further technical solution may also be that the lower end of the mobile frame is fork-shaped so as to have two fork arms, and one pulley is arranged on each of the fork arms. In this way, a balanced force can be formed on the axial extension end of the die-cutting roller by means of the two pulleys.

A further technical solution may also include a pulley bracket, one pulley bracket is arranged on each of the fork arms, and the pulley is arranged on the pulley bracket.

A further technical solution may also be that the outer shell is a closed shell, an opening is provided at the lower part of the outer shell, and the moving frame can move telescopically in the opening. In this way, the inner cavity of the outer casing can form a guide body of the moving frame, so that the moving frame can move up and down stably. Moreover, when the cutter cuts the cardboard and presses against the die-cutting roller in the opposite direction, the outer casing can also clamp the moving frame to prevent the moving frame from swinging.

Because the utility model has the above-mentioned characteristics and advantages, it can be applied to a carton die-cutting machine.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of the carton die-cutting machine applying the utility model;

Fig. 2 is the sectional structure diagram of A-A direction in Fig. 1;

Fig. 3 is the sectional structure schematic diagram of B-B direction in Fig. 2;

Fig. 4 is the sectional structure diagram of D-D direction in Fig. 1;

Fig. 5 is a schematic diagram of an enlarged structure of area C in Fig. 3;

Fig. 6 is a schematic diagram of an exploded structure of the pressing device.

Detailed ways

The structure of the carton die-cutting machine to which the utility model is applied will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a schematic diagram of the front structure of the carton die-cutting machine of the application of the present utility model. Frame 12, the die-cutting roller 2, die-cutting roller 3 that are arranged in parallel between the main frame (11,12) on both sides, the shaft extension ends (21,22) and die-cutting rollers at two ends of the die-cutting roller 2 The shaft extension ends (31, 32) at both ends of the stick 3 are respectively rotatably arranged on the main frame (11, 12) through the bearing mechanism. In a specific embodiment, the die-cutting roller 3 may be located below, above the die-cutting roller 2 or arranged left and right between them. However, as a relatively easy control method, in this embodiment, the die-cutting roller 3 is arranged directly below the die-cutting roller 2 . The die-cutting roller 2 and the die-cutting roller 3 are arranged parallel to each other, but there is a space between them where the cutter can be arranged and the cardboard can pass through. The mutual parallel mentioned here mainly refers to their The rotation center axes are parallel.

Wherein, the die-cutting roller 2 can also be called a hard stick or an upper roller, which mainly acts as a chopping board; the shaft extension ends (21, 22) at both ends of the die-cutting roller 2 can be rotatably positioned On the frame (11, 12), a gear 41 capable of driving the die-cutting roller 2 to rotate is set on the shaft end 22 of the die-cutting roller 2. The cutting working area 2a of the die-cutting roller 2 is set as a metal stick, and in order to improve the service life of the die-cutting roller 2, a hard metal layer such as metal chrome is plated on the outer surface of the metal stick.

Wherein, the die-cutting roller 3 can radially float on the side of the die-cutting roller 2, that is to say, the die-cutting roller 3 can float radially relative to the die-cutting roller 2, that is, The radial distance between the die-cutting roller 3 and the die-cutting roller 2 is adjustable, and the radial position of the die-cutting roller 3 is adjustable through an adjusting mechanism. The knife mold stick 3 mainly includes a metal stick 34 and a pair of semicircular wooden knife templates 35 . A pair of semicircular knife templates 35 are buckled onto the metal stick 34 of the knife mold stick 3 . Cutter 33 is installed on the cutting working area of described knife mold stick 3 by means of a pair of semicircular described knife plate 35, can cut like this when described knife mold stick 3 and described die-cutting roller 2 rotate relatively The cardboard located therein then forms a usable carton. The cutter 33 in this embodiment is a flat cutter. Of course, the serrated knife can still be installed on the die mold stick 3, but the sawtooth height of the serrated knife should be as small as possible. In addition, a main drive gear 42 is provided on the shaft extension end 32 of the die roll 3 for transmission connection with an external main drive (not shown in the figure).

Since the knife 33 and the die-cutting roller 2 belong to a rigid pressure cutting mode, when the knife 33 cuts the cardboard, it will inevitably form a reverse pressure on the die-cutting roller 2 . And because the gap required between the cutter 33 and the die-cutting roller 2 is very small or even zero, as long as the die-cutting roller 2 moves slightly in the radial direction during the cutting process, the cardboard is not easily cut Then it is easy to produce waste products. For this reason, in order to further improve the cutting efficiency and cutting stability of the die-cutting machine of the roll press type, the top pressing devices (5a, 5b) are also respectively set on the main frame (11, 12), and the top pressing devices (5a, 5b) are respectively set up. Devices (5a, 5b) respectively press the shaft extension ends (21, 22) at both ends of the die-cutting roller 2, and the pressing devices (5a, 5b) are provided with The shaft extension ends (21, 22) and the pulley 50 that can roll on it, the die-cutting roller 2 is located between the pressing device (5a, 5b) and the die-cutting roller 3. In this way, the reverse pressing force exerted by the die-cutting roller 3 on the die-cutting roller 2 and the pressing force applied to the die-cutting roller 2 by the pressing device (5a, 5b) can cancel each other out.

According to the above-mentioned technical scheme, since the strength of pressing the die-cutting roller 2 in reverse is not balanced when the cutter 33 cuts the cardboard, the pressing device (5a, 5b) can press against the die-cutting roller 2 On the shaft extension ends (21, 22), for this reason, the shaft extension ends (21, 22) of the die-cutting roller 2 can be pressed against by means of the pulley 50, which can prevent the die-cutting roller 2 from being damaged by the bearing mechanism. The uncertain and irregular radial floating in the gap that exists in itself can accurately position the die-cutting roller 2, and can place the required distance between the blade of the knife 33 and the die-cutting roller 2. The gap can be stably controlled, thereby greatly improving the cutting efficiency and stability of the roller press die-cutting machine; secondly, it can also eliminate the gap error change caused by the wear and aging of the bearing mechanism, so that not only the accuracy requirements of the bearing mechanism can be satisfied Reduce and can adopt relatively cheap bearing mechanism. And two described pressing devices (5a, 5b) respectively press the shaft extension ends (21, 22) at the two ends of the die-cutting roller 2, and can adjust the pressing force respectively and then adjust the blade and the blade of the cutter 33 respectively. The gap between the die-cutting rollers 2 improves the consistency of the gap in the axial direction. Since the pulley 50 and the shaft extension end 22 of the die-cutting roller 2 roll against each other, the wear of the pulley 50 on the shaft extension end 22 of the die-cutting roller 2 can be greatly reduced.

A further technical solution is, as shown in Figure 5, a bushing 23 corresponding to the pulley 50 is provided on the shaft extension end (21, 22) of the die-cutting roller 2, and the bushing 23 is tightly held on the On the axial extension ends (21, 22) of the die-cutting roller 2, the pulley 50 presses against the bushing 23.

Wherein, the bushing 23 is a component that is independent from the axial extension ends (21, 22) of the die-cutting roller 2 and tightly hugged on the axial extension ends (21, 22) of the die-cutting roller 2. The bushing 23 is made of a material with relatively high wear resistance, such as red copper, synthetic steel, and the like. In fact, the bushing 23 can be said to be a protective sleeve for the shaft extension ends (21, 22) of the die-cutting roller 2, preventing the pulley 50 from contacting the shaft extension ends (21, 22) of the die-cutting roller 2. Direct contact causes abrasion to the die-cutting roller 2 . When the bushing 23 is worn out, the bushing 23 can be disassembled separately for replacement. In order to facilitate the installation or replacement of the bushing 23, the bushing 23 is a split ring, and the two ends of the opening are connected by screws or fastened by tie hoops. Wherein, when the two ends of the opening are connected by screws or fastened by ties, it is necessary not to form an obstacle to the cooperation between the pulley 50 and the bushing 23 .

In fact, the pressing devices (5a, 5b) can be implemented in a variety of ways, and one of them will be described below. Since the structures of the pressing devices (5a, 5b) are basically the same, the pressing device 5b will be used as an example below. For a detailed introduction:

As shown in Figures 5 and 6, the pressing device 5b includes an outer casing 51 capable of being connected to the right frame 12, a moving frame 53 arranged in the outer casing 51, and a moving frame capable of driving the moving frame. The drive 52 that 53 moves down is fork-shaped so as to have two fork arms 55 at the lower end of the moving frame 53, and a pulley bracket 56 is arranged on each of the fork arms 55, and the pulley 50 is arranged on the pulley bracket 56 superior. In this way, the two pulleys 50 can be used to form a balanced force on the axial extension end of the die-cutting roller 2 .

Wherein, the outer shell 51 is a closed shell with an inner cavity composed of a flat wall 51a, a frame wall 51b and a top wall 51c, and an opening 510 is provided at the lower part of the outer shell 51 . A threaded through hole 510c threadedly connected with the driver 52 is provided on the top wall body 51c. The driver 52 is a bolt, which is screwed on the threaded through hole 510c of the top wall body 51c and can abut against the top of the moving frame 53 .

In addition, in order to simplify the structure of the pressing device 5b, the moving frame 53 can adopt another structure, that is, the lower end of the moving frame 53 is not set into a fork shape but a straight rod shape and the The pulley bracket 56, the pulley 50 is arranged on the pulley bracket 56.

According to the above technical solution, when the driver 52 is driven, the moving frame 53 can be pushed to move telescopically in the opening 510 . In this way, the inner chamber of the outer casing 51 can form a guide body of the moving frame 53, so that the moving frame 53 can move up and down stably. Moreover, when the cutter 55 cuts the cardboard and presses against the die-cutting roller 2 in reverse, the outer shell 51 can also clamp the moving frame 53 to prevent the moving frame 53 from swaying. In this way, the up and down movement of the pulley 50 can be adjusted by means of the driver 52 , thereby adjusting the pressing force of the pulley 50 on the shaft extension end 22 of the die-cutting roller 2 .

Claims (10)

1. A carton die-cutting machine provided with a top pressing device, comprising a main frame located on both sides, a die-cutting roller and a knife die stick arranged between the main frames on both sides in parallel, shafts at both ends of the die-cutting roller The extension end is rotatably set on the main frame through a bearing mechanism; it is characterized in that the die-cutting roller can rotate radially and float and is set on the side of the die-cutting roller; it also includes the main frame on both sides The pressing device is respectively arranged on the pressing device, and the rolling pulley is arranged on the pressing device, and the pulley is pressed on the shaft end of the die-cutting roller. The die-cutting roller is located between the pressing device and between the knife mold sticks. 2. The carton die-cutting machine according to claim 1, wherein a bushing corresponding to the pulley is arranged on the shaft end of the die-cutting roller, and the pulley presses against the bushing On, the bush is hugged tightly on the shaft extension end of the die-cutting roller. 3 . The carton die-cutting machine according to claim 2 , wherein the bushing is a split ring, and the two ends of the split are connected by screws or fastened by ties. 4 . 4. The carton die-cutting machine according to claim 1, wherein the bearing mechanism is a sliding bearing or a rolling bearing. 5. The carton die-cutting machine according to any one of claims 1 to 4, characterized in that, the pressing device comprises an outer casing capable of being connected to the main frame, and a moving movement set in the outer casing. frame and a driver capable of driving the moving frame down, and the pulley is connected to the lower end of the moving frame. 6 . The carton die-cutting machine according to claim 5 , wherein the driver is directly screwed to the outer casing, and the driver abuts against the top of the moving frame. 7 . 7. The carton die-cutting machine according to claim 5, further comprising a pulley bracket arranged at the lower end of the moving frame, and the pulley is arranged on the pulley bracket. 8 . The carton die-cutting machine according to claim 5 , wherein the lower end of the moving frame is fork-shaped so as to have two fork arms, and one pulley is arranged on each of the fork arms. 9 . The carton die-cutting machine according to claim 8 , further comprising a pulley bracket, one pulley bracket is arranged on each of the fork arms, and the pulley is arranged on the pulley bracket. 10. The carton die-cutting machine according to claim 5, characterized in that, the outer casing is a closed casing, an opening is provided at the bottom of the outer casing, and the moving frame can be positioned at the opening Telescopic movement.