CN2848705Y - Three-dimensional packaging machine - Google Patents

Abstract

The utility model discloses a three-dimensional packaging machine, comprising a traction system 1, a blister forming system 2, an online printing system 3, a sealing system 4, a coding system 5, a cutting system 6, a waste edge material winding and collecting system 7, and a discharging system 8, which are connected in sequence and arranged on a frame 11; by organically combining the sealing system, the blister forming system, the coding system, the cutting system, etc., the processes of container forming, product packaging, and slitting are connected as one, which is suitable for continuous and automatic production, and the efficiency is greatly improved.

Description

Three-dimensional packaging machine

【Technical field】

The utility model relates to a packaging mechanism equipment, in particular to a packaging mechanical equipment capable of automatically packaging, coding and cutting various products.

【Background technique】

In the prior art, products in various industries such as pharmaceuticals, health care products, food, cosmetics, and agricultural products need to be packaged. The packaging machine can heat-seal, pack, and count. And the forming machine can form various plastic film materials, such as PE, PP, PS, ABS, etc., into various beverage cups, convenient bowls (boxes), trays, preserved fruit covers, industrial and agricultural product packaging, and various Class plastic packaging containers, providing packaging machines with the above-mentioned product packaging containers. In the packaging production of products, the above-mentioned processes are relatively independent, the production efficiency is low, and it is not suitable for continuous and automated production.

In the prior art blister forming machine or sealing packaging machine, since the heating plate and the sealing upper mold are heated by the built-in heating rod, due to the arrangement of the heating rod, the distance between each area of the working surface and the heating element is different, The temperature difference of each detection point on the working surface is relatively large, resulting in uneven preheating of the membrane material, resulting in poor molding and sealing. As shown in Figure 6, the heating plate in the prior art adopts the whole plate preheating method. After the heating plate is closed, the film material in the middle of the heating plate is heated, while the film material behind the heating plate is not heated, just in the previous step. There is a wrinkle between the heating film material of the first diameter and the heating film material of the next step. In fact, this wrinkle is caused by the edge of the whole heating plate. During the sealing process, it is not 100% guaranteed that this wrinkle will be included in the sealing area. When the wrinkle in this area is just on the sealing edge of the packaging container and the upper film, the upper film will be sealed during sealing. The seal is pressed on the wrinkle, resulting in poor sealing or leakage, which seriously affects the production quality. Since the edge of the film material is not sealed during sealing, the upper film material and the lower film material are not sealed and pressed together, and the waste edge material after the product is cut is very scattered, making it difficult to collect.

【Content of invention】

The purpose of this utility model is to overcome the above deficiencies in the prior art, and provide a three-dimensional packaging machine with integrated blister forming, sealing and packaging, high packaging quality and greatly reduced defective rate.

In order to achieve the above purpose, the utility model proposes a three-dimensional packaging machine, including a traction system 1, a plastic forming system 2, a sealing system 4, a coding system 5, a cutter system 6, a waste edge material winding collection system 7, a The material system 8 is sequentially connected and arranged on the frame 11; the plastic forming system includes a heating plate, an upper mold for forming, a lower mold for forming, and a punch; The end is connected with the output end of the heating plate, and the punch is set in the mold cavity of the forming upper mold; the sealing system includes a sealing lower mold, a sealing upper mold, and a silicone pad; the silicone pad is placed On the cavity of the sealing lower mold, the sealing upper mold has a built-in heating tube for heating and softening the sealed film material.

The above-mentioned three-dimensional packaging machine also includes an online printing system 3, which is arranged on the frame 11, and its input end is connected with the output end of the blister forming system 2, and the output end is connected with the input end of the sealing system 4. connect.

The above-mentioned heating tubes in the heating plate and the heating tubes in the sealing upper mold adopt a dislocation layout, that is, one long and one short, and one short and one long are arranged repeatedly. The center distance between the holes of the heating tube is preferably between 30mm-42mm. The distance between the center of the heating tube and the working surface is preferably 15-25mm.

In the above-mentioned three-dimensional packaging machine, the heating plate is provided with a plurality of heating bosses, and the area of the heating bosses is slightly larger than the cavity area of the lower molding die, so that the heating plate is changed from whole board heating to regional heating; If the cavity area is N×M, then the area of the heating boss is (N+X)×(M+Y), where X and Y are preferably 1mm-3mm.

In the three-dimensional packaging machine mentioned above, the cavity of the forming lower mold of the blister forming system is provided with reinforcing ribs and slopes. The reinforcing ribs are preferably trapezoidal and/or arc-shaped, depending on the depth of the forming lower mold cavity, the deeper the The bigger the slope, the smaller it is. The slope is preferably 5° to 15°. An aluminum alloy plate is arranged between the heating bosses, the surface of which is slightly lower than the heating bosses. The size of the punch used for the hard mold is 0.6-0.8 times that of the lower cavity, and the punch is in an inverted trapezoidal shape, that is, the upper part is smaller and the lower part is larger; the size of the punch used for the soft mold is the size of the lower cavity. 0.8-0.95 times, the shape of the punch is square. The surface of the silicone pad of the sealing system is provided with twill lines, and the hardness of the silicone pad is preferably Shore 55°-80°. The edge of the sealing upper mold is provided with a small boss.

Due to the adoption of the above scheme, the following beneficial effects are brought:

By organically combining the sealing system, plastic forming system, coding system, and cutter system, the container forming, product packaging, and cutting processes are integrated into one, which is suitable for continuous and automated production and greatly improves efficiency.

Through the following technical improvements, the three-dimensional packaging machine of the present invention greatly improves the quality of the packaging container formed by blistering, greatly reduces the defective rate of sealed packaging, greatly improves the product packaging quality, and improves the packaging qualification rate. At the same time, unnecessary waste of membrane materials in production is avoided, and production costs are saved.

1. Design a heating boss on the heating plate. The area of the heating boss is slightly larger than the cavity area of the forming lower mold. Change the heating of the whole plate of the heating plate to regional heating. Even after heating, the lower film will still have wrinkles However, compared with the whole heating process of the heating plate, the probability of the wrinkles that appear in the heating process of the heating boss area is greatly reduced on the sealing edge of the formed packaging container, and the wrinkles will not appear in the contact seal with the upper film. On the sealing edge of the seal, avoid sealing on the folds during sealing, resulting in poor seal or leak seal.

Moreover, the area of the heating boss is slightly larger than the area of the forming cavity, mainly for heating and softening of the lower film material in the blister forming area, and the film material in the non-forming area between the forming areas is kept slightly higher than the hardness and strength of the forming area to avoid The deformation of the non-forming area during forming will affect the quality of the packaging container and help to ensure the process quality of blister forming. The heating boss is 1-3mm larger than the molding cavity, and the sealing edge is about 5mm larger than the heating boss. It can be 100% guaranteed that all the wrinkles are sealed in the sealing area, which avoids weak or leaky sealing.

An aluminum alloy plate slightly lower than the heating boss is added between the heating bosses, so that the heating of each part will not be too disparate, and the film material between the formed packaging container and the packaging container will be prevented from being deformed and protruding due to excessive temperature difference, ensuring the product quality.

2. The heating plate and the built-in heating tube of the sealing upper mold are arranged in a dislocation manner, which effectively compensates for the uneven arrangement of the heating tube and the uneven heating of the plate surface, and the transmission between each point of the plate surface and the heating element The thermal distance is basically the same; the actual test proves that the temperature of each detection point on the working surface of the heating plate and the sealing upper mold is basically consistent; the heating plate and the sealing upper mold can evenly heat the film material, which improves the yield rate of forming and sealing . The center distance of the heating tube is close to the working surface, and the distance is generally between 15-25mm, which makes the heat transfer faster.

3. A small boss is designed on the edge of the sealing upper mold, and the edge of the membrane material can be sealed and pressed during sealing, so that the upper and lower membrane materials at the edge can be sealed and pressed together, effectively avoiding waste edges The phenomenon of scattered materials makes the collection of waste materials go smoothly.

4. By setting reinforcing ribs on the mold cavity of the forming lower mold, the strength of the forming packaging container is improved and it is not easy to deform; by optimizing the shape and volume of the punch, the drawing in the forming process is smoother and the forming effect is better.

5. The silicone pad set on the sealing lower mold acts as a buffer and seal, avoiding weak sealing, helping to reduce the phenomenon of unsatisfactory sealing and leaky sealing, and making the sealing edge more beautiful.

【Description of drawings】

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

Figure 1 is a structural diagram of the three-dimensional packaging machine, and Figure 2 is a structural diagram of the mold lifting structure of the three-dimensional packaging machine.

Fig. 3 is a schematic diagram of the winding collection system of the waste edge material of the three-dimensional packaging machine,

Figure 4 is a schematic diagram of the step distance of the three-dimensional packaging machine, Figure 5 is a diagram of the electric control system of the three-dimensional packaging machine,

Figure 6 is a diagram of the heating plate of the hard mold of the three-dimensional packaging machine for heating and forming

Figure 7 is a diagram of the heating plate for thermoforming in the hard mold area of the three-dimensional packaging machine.

Fig. 8 is a diagram of the cavity of the lower mold for hard mold forming of the three-dimensional packaging machine, and Fig. 9 is a layout diagram of the hard mold of the three-dimensional packaging machine.

Figure 10 is a diagram of the hard mold and metal plate of the three-dimensional packaging machine.

Fig. 11 and Fig. 12 are diagrams of the die cavity punch on the hard mold forming of the three-dimensional packaging machine.

Figure 13 is a layout diagram of the punches in the upper cavity of the hard mold forming of the three-dimensional packaging machine.

Figure 14 is a diagram of the upper mold cavity of the hard mold forming of the three-dimensional packaging machine,

Fig. 15 is a drawing of the lower mold of the three-dimensional packaging machine, and Figs. 16, 17, and 18 are drawings of the upper mold of the three-dimensional packaging machine.

Figure 19 is a diagram of the hard mold silicone pad of the three-dimensional packaging machine, and Figure 20 is the installation diagram of the hard mold cross-cutting knife of the three-dimensional packaging machine.

Figure 21 is a schematic diagram of the structure of the hard mold cross-cutting knife of the three-dimensional packaging machine, and Figure 22 is a schematic diagram of the reinforcing rib of the three-dimensional packaging machine.

Figure 23 is the second schematic diagram of the reinforcing rib of the three-dimensional packaging machine, and Figure 24 is the layout diagram of the heating tube of the three-dimensional packaging machine,

Fig. 25 is a schematic structural diagram of the online printing system.

【Detailed ways】

As shown in Figure 1, the three-dimensional packaging machine of the present utility model includes a traction system 1, a plastic forming system 2, an online printing system 3, a sealing system 4, a coding system 5, a cutter system 6, and a waste edge material winding collection system 7. Discharging system 8, PLC control system and frame 11.

The traction system is divided into two parts: the film traction system and the expandable winding system. The film traction system is a servo drive system, which mainly uses a servo motor as the driving actuator to drive the chain and the mushroom clip through gear meshing and sprocket transmission. sports. During the traction process, the two edges of the lower film material film 12 used for forming are clamped in the mushroom clip and move forward periodically; the expandable winding system is mainly composed of a paper shaft and an expansion mechanism, and the expansion mechanism consists of An elastic steel sheet supports the core of the paper roll and plays the role of tensioning the paper roll. The upper paper roll enters the sealing area through the paper passing shaft, and is sealed with the forming film, and is pulled forward by the film traction system.

Blister molding system 2 and sealing system 4 are the main parts of the present utility model, which are described in detail below in conjunction with the accompanying drawings:

The blister forming system of the packaging container includes a heating plate 21 for preheating and a forming die 22. The forming die includes a forming upper die 221 and a forming lower die 222, as shown in FIG. 8 is a cavity diagram of a hard die forming lower die. Fig. 9 is a layout drawing of a hard mold of a three-dimensional packaging machine, and Fig. 14 is a diagram of an upper mold cavity of a hard mold. The molding process is as follows: after the mold is closed, the membrane material is pressed and attached to the heating plate by compressed air for sandwich preheating, the upper mold on the heating plate is driven by the cylinder to move downward, and the lower mold of the heating plate moves upward to clamp the membrane material in the middle. After completing the preheating, the upper and lower molds on the heating plate are equipped with heating tubes with a certain power near the working surface, and the temperature is generally between 90° and 130°. After this process is completed, the membrane material moves forward a step, the cavity of the upper mold is blown, the cavity of the lower mold is sucked by the vacuum pump 24, and the punch in the cavity of the upper mold sinks and sinks. The depth of the film is shallower than that of the cavity of the lower forming die, and the membrane material is adsorbed on the inner surface of the cavity of the lower forming die. Fig. 11 and Fig. 12 are diagrams of upper die cavity punches for die forming, and Fig. 13 is a layout diagram of die cavity punches for die forming. There is a cooling circulation system on the inner wall of the cavity of the lower mold to cool the cavity of the lower mold, mainly to make the film material rapidly cool and form in the cavity of the lower mold. The sinking of the punch deforms the preheated film material, and the cavity of the forming lower mold is inhaled to facilitate the auxiliary forming (the punch is mainly for the hard film, if the forming cavity of the soft film is shallow, the punch can not be used). There is a positive pressure hole in the cavity of the upper forming mold for blowing air, a negative pressure hole in the cavity of the lower forming mold for air suction, and a cooling system is installed on the cavity support of the upper forming mold to reduce the surface temperature . As shown in Figure 2, during the whole molding process, the upper die 221 does not move, and the lower die 222 is reciprocated up and down by a cylinder lifting mechanism 23, and the punch in the upper die sinks after the lower die rises.

In the sealing process, the heat sealing is completed by the sealing upper mold and the sealing lower mold. Figure 15 is a diagram of the three-dimensional packaging machine hard mold sealing lower mold, and Figures 16, 17, and 18 are the three-dimensional packaging machine hard mold sealing. Mockup. The molded lower film material becomes a container, and after the product to be packaged is placed in it, it is drawn to the sealing mold. After the upper film material 40 is covered on it, the upper sealing mold 41 moves downward through the cylinder 42, and the lower sealing mold is sealed. The mold is sealed by moving upward through the cylinder lifting mechanism, and at the same time, the lower mold is vacuumed, mainly to make the packaging container to be sealed close to the lower mold. As shown in Figure 17, a heating tube 210 with a certain power is installed near the working surface of the sealing upper mold, and the temperature is generally between 100°-180°. There is a cooling system on the sealing upper mold support to reduce the surface temperature. The distance between the centerline of the heating plate and the centerline of the molding cavity should be guaranteed to be one step (twice the length of a packaged product), and the distance between the centerline of the sealing upper mold and the centerline of the molding cavity should be guaranteed to be N steps ( N is an integer), as shown in Figure 4, only in this way can it be ensured that the molded film is just in the cavity of the lower mold for sealing. During production, preheating, forming and sealing can be carried out at the same time, or preheating and forming can be performed first, and then sealing. These actions can be changed through PLC according to the actual situation.

Improvement 1: Design ribs and inclinations of the cavity of the forming lower mold

As shown in the figure, in the process of blister forming with hard film material, since the box formed by the hard film is a hard box, the four walls and the bottom of the box are relatively soft. After many times of improved design, the reinforcing rib 25 is designed in the molding lower cavity, as shown in Figure 8, Figure 22, and Figure 23. The shape is trapezoidal or arc-shaped, which increases the hardness of the box after molding.

The inner cavity wall of the lower molding cavity is designed with a certain inclination, so that the membrane material can be stretched evenly during the molding process, and the mold can be drawn more smoothly. The draft slope depends on the depth of the cavity of the lower forming mold, generally between 5° and 15°. If the depth of the forming cavity is shallow, the slope will be small; if the depth of the forming cavity is deep, the slope will be large.

Improvement 2: The whole board heating is changed to regional heating

The preheating of the entire heating plate of the blister forming system causes wrinkles between the heating area of each step and the heating area of the next step, and is often sealed on the wrinkles during sealing, resulting in poor sealing or leaking, which is serious affect production quality. Through experiments, as shown in Figure 7, the technicians changed the heating of the whole plate to regional heating, that is, designed a heating boss 26 on the heating plate. The area size and arrangement of the bosses are matched with the molding cavity. There will also be wrinkles, but the probability of the wrinkles on the heating boss being distributed on the sealing edge of the formed packaging container is greatly reduced, and the wrinkles basically appear in the sealing area that is not in contact with the upper film. It is completely surrounded in the sealing area during sealing, which avoids poor sealing or leakage caused by sealing on wrinkles during sealing. The area of the heating boss is slightly larger than the area of the molding cavity: the area of the molding cavity is N×M, then the area of the heating boss is (N+X)×(M+Y), and X and Y are generally between 1mm-3mm.

Improvement 3: The heating tubes in the heating plate and the sealing upper mold adopt a dislocation layout

Before the dislocation layout was adopted, after testing, the temperature difference between the heating plate and the detection points on the working surface of the sealing upper mold was too large, which caused uneven preheating of the film material, resulting in poor molding. After many tests, as shown in Figure 24, the heating tubes are in a dislocation layout, the long tubes 211 and the short tubes 212 are arranged in a repeated arrangement of one long and one short, and one short and one long. The center distance between the holes Generally, it is 30mm-42mm, which effectively compensates the phenomenon of uneven heating of the heating tube, and the temperature of each detection point on the working surface of the heating plate and the sealing upper mold is basically consistent.

In order to make the heat transfer faster, the heating pipes are installed closer to the heating plate and the working surface of the sealing upper mold. Generally, the distance between the center of the heating tube hole and the working surface is between 15mm-25mm.

Improvement 4: Seal the edge of the upper mold and design a small edge boss

Before the edge boss is designed, the edge of the film material is not sealed during sealing, and the upper film material and the lower film material are not sealed and pressed together. After the product is cut, the waste edge material is very scattered, making it difficult to collect. After improvement, as shown in Figure 23, the edge boss 43 is designed at the edge of the sealing upper mold, and the edge of the film material can be sealed and pressed when sealing, so that the upper film material and the lower film material are sealed and pressed together, effectively It avoids the phenomenon of scattered waste and scraps, and makes the collection of waste and scraps go smoothly.

Improvement 5: Add an aluminum alloy plate between the two heating bosses of the regional heating plate, or other metal plates with fast heat conduction. The aluminum alloy is preferred because it is relatively light and easy to process. Before this aluminum alloy plate was added, the temperature of the boss and the area around the boss was not uniform, and during preheating, only the boss part preheated the lower membrane material, while there was no gap between the boss and the boss. , The temperature difference between the heating blank area and the heating area is very large. After forming, there is a phenomenon that the film material protrudes upwards between the hard box and the hard box, which seriously affects the product quality. As shown in Figure 10, an aluminum alloy plate 27 is now added between the two heating bosses to make the heating of each part tend to be balanced, but in order to avoid the same problem as the whole plate heating after adding the plate, the plate should be slightly lower on the heating boss.

Improvement 6: Improve the pattern and hardness of the silicone pad in the lower cavity

Figure 19 is a schematic diagram of the structure of the hard-molded silicone pad. The surface of the cavity silicone pad in the prior art is flat, without interlaced twill lines. After sealing, the edge of the package is blank. The phenomenon. After designing the pattern, the blank space is more beautiful, and it is also a reasonable use of the limited space to make the product look fuller. In addition, the hardness of the cavity silicone is a key parameter. If the hardness is too high or too low, it will affect the sealing quality. After repeated pondering by the technicians, it is finally determined to be between 55°-80° Shore, which effectively solves the phenomenon of weak sealing. .

Improvement 7: Improvement of the size and shape of the upper mold cavity punch

Figure 11, Figure 12, and Figure 13 are schematic diagrams of the shape and arrangement of punches in the cavity of the upper die. After the improvement, the size of the hard mold punch is 0.6-0.8 times the volume of the lower forming cavity, and the punch is in the shape of an inverted trapezoid, that is, the upper part is smaller and the lower part is larger; the size of the soft die punch is 0.8-0.95 times the volume of the lower forming cavity , The shape of the punch is square.

As shown in FIG. 25 , the inline printing system 3 includes a printing roller 31 , an ink tank 32 , an anilox roller 33 , a blade 34 , a printing plate 35 , a drum 36 and the like. The blade is installed on the knife seat away from the surface of the anilox roller. The anilox roller rotates and sticks the ink in the ink tank. After the blade scrapes the ink evenly, the ink is printed on the printing plate, and the printing plate is fixed on the drum. The upper film cover material passes through the traction printing system, and the printing roller presses it on the drum for printing. The printing signal is to collect the distance traveled by the chain, and the signal is sent out by the control box. Online printing adopts flexographic printing, which is convenient for a small number of products to be revised, and is suitable for the production of multiple specifications for the same product (the packaging pattern of each specification is not used). This system can be used according to production needs.

The coding system 5 is mainly composed of a spray head, a control box and a support. The shower head is fixed on the support, and the support is fixed on the frame. The signal of spraying code is to collect the distance traveled by the chain, and the control box sends out the control signal to ensure that the writing is just sprayed on the product correctly.

The cutter system 6 is divided into a transverse cutter system 61 and a longitudinal cutter system 62 . The cross-cutting knife system is divided into dura mater cross-cutting knife and pia mater cross-cutting knife, as shown in Figure 20 and Figure 21, 611 at the center line of the dura mater cross-cutting knife is a full star, 612 at the two edges is a half star, and the pia mater cross-cutting knife is half a star. The cross cutting knife is a long serrated blade, they are all fixed on the frame through the knife seat, there is a sticking board directly below it, the sticking board is connected with the air cylinder or hydraulic cylinder through the connecting rod, when the product enters the horizontal During the cutter system, the air cylinder or hydraulic cylinder 64 is inflated or oiled, and the board is pushed up to collide with the cross-cutting knife blade to complete the cross-cutting. The dura mater and soft film of the slitting knife system are cut by the upper cutter and the lower cutter, and the timing belt is driven by the chain, and the timing belt drives the upper and lower cutter shafts to rotate synchronously for slitting. When producing dura mater, a vacuum cleaner 63 is housed at the slitting knife place, is used for absorbing waste edge.

As shown in Figure 3, the waste trim winding collection system is driven by two three-phase asynchronous motors, which drive the collection disc to rotate, and the waste trim is wound on the shaft in the collection disc through the rotation of the collection disc.

The discharge system consists of a three-phase asynchronous motor and a conveyor belt. The conveyor belt is driven by the motor, and the products are output in an orderly manner on it.

The control system is shown in Figure 5, using PLC as the main control circuit, using touch-type operation panel, Chinese-language operation interface, icon prompts, making the operation easier, and has guiding prompt text display and multi-text during the operation of the equipment. Mode failure information is displayed.

The frame is made of stainless steel and aluminum alloy materials, and the open structure design meets the hygienic requirements, which is convenient for servicing all parts in the body. The rack is supported horizontally on the ground by several support feet.

Claims (10)

1. A three-dimensional packaging machine, characterized in that it includes a traction system (1), a blister forming system (2), a sealing system (4), a coding system (5), a cutter system (6), and waste edges The material winding collection system (7) and the discharge system (8) are successively connected and arranged on the frame (11); the plastic forming system includes a heating plate, a forming upper mold, a forming lower mold, and a punch; The forming upper mold and the forming lower mold are set up and down oppositely, the input end is connected to the output end of the heating plate, the punch is arranged in the cavity of the forming upper mold; the sealing system includes a sealing lower mold, Sealing the upper mold and the silica gel pad; the silica gel pad is placed on the cavity of the sealing lower mold, and the sealing upper mold has a built-in heating tube for heating and softening the sealed membrane material. 2. The three-dimensional packaging machine according to claim 1, characterized in that: it also includes an online printing system (3), which is arranged on the frame (11), and its input end is connected to the output of the blister forming system (2) The output end is connected with the input end of the sealing system (4). 3. The three-dimensional packaging machine according to claim 1, characterized in that: the heating tubes in the heating plate and the heating tubes in the sealing upper mold adopt a dislocation layout, that is, one long and one short, and one short and one long are arranged repeatedly layout method. 4. The three-dimensional packaging machine according to claim 1, characterized in that: the heating plate is provided with a plurality of heating bosses, and the area of the heating bosses is slightly larger than the cavity area of the lower molding die, so that the heating plate is formed by Whole board heating is changed to zone heating. 5. The three-dimensional packaging machine according to claim 1, characterized in that: the mold cavity of the forming lower mold is provided with reinforcing ribs and slopes, the reinforcing ribs are trapezoidal and/or arc-shaped, and the slope is according to the shape of the forming lower mold. Depending on the depth of the cavity, the deeper the slope, the greater the slope, and vice versa. 6. The three-dimensional packaging machine according to claim 4, wherein a metal plate is arranged between the heating bosses, and the surface of the metal plate is slightly lower than the heating bosses. 7. The three-dimensional packaging machine according to claim 1, wherein a small boss is provided on the edge of the sealing upper mold. 8. The three-dimensional packaging machine according to claim 1, characterized in that: the punch is in the shape of an inverted trapezoid, that is, the upper part is smaller and the lower part is larger. 9. The three-dimensional packaging machine according to claim 1, characterized in that: the shape of the punch is square. 10. The three-dimensional packaging machine according to claim 1, characterized in that: the surface of the silicone pad is provided with textures.

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