Soft bag making device and control method thereof

Abstract

The invention discloses a soft bag making device and a control method thereof, and relates to the technical field of soft bag making devices.The soft bag making device comprises a clamp used for clamping a soft bag; a first heating area is arranged on the bottom surface of the upper mold, and the upper mold can be driven to reciprocate in the first direction; the upper cooling plate is connected with the bottom surface of the upper mold through an elastic telescopic component, the upper cooling plate is located on the inner side of the first heating area, and a plurality of vacuum suction cups are arranged on the bottom surface of the upper cooling plate; a second heating area is arranged on the top surface of the lower mold, and the lower mold can be driven to reciprocate in the first direction; the lower cooling plate is embedded in the top surface of the lower mold, and the lower cooling plate is located on the inner side of the second heating area; and the welding working surface is arranged between the upper die and the lower die. According to the soft bag making device, the technical problem that the soft bag and the lower mold cannot be quickly and effectively separated due to the fact that the soft bag is still adhered to the lower mold after the soft bag making is completed by an existing soft bag making device is solved.

Description

Technical Field

[0001] This invention relates to the field of flexible bag making equipment, and particularly to a flexible bag making equipment and its control method. Background Technology

[0002] Non-PVC flexible bags are manufactured using matching upper and lower molds. The upper and lower molds contain embedded heating rods and thermocouples to control the temperature at the appropriate level for bag making. After bag making, a clamp pulls the non-PVC flexible bag away from between the upper and lower molds. However, in actual production, the temperature is very high during non-PVC film bag making. Some types of non-PVC film tend to stick to the lower mold. When the clamp pulls the flexible bag away from the mold, it may become stuck to the lower mold, causing the bag to roll up and become waste.

[0003] The prior art discloses a novel anti-sticking device for non-PVC soft bag molds, including an upper mold and a lower mold. A cooling plate is embedded in the upper surface of the lower mold, and the upper surface of the lower mold is flush with the upper surface of the cooling plate. The cooling plate has a U-shaped cooling water channel inside, and cooling water connectors are provided at the outlet and inlet of the cooling water channel. The cooling water connectors are connected to a chiller through cooling water pipes, and the cooling water pipes are located inside the lower mold.

[0004] However, after the soft bag making device described above completes the soft bag making process, the cooling plate's movement distance is very small due to the limitations of the mold structure, which cannot effectively lift the soft bag. The soft bag remains stuck to the lower mold, preventing rapid and efficient separation and thus reducing the overall soft bag production efficiency. Therefore, this paper proposes a soft bag making device and its control method to address these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a soft bag making device and its control method, which solves the technical problem that after the soft bag is made, the soft bag still sticks to the lower mold, resulting in the soft bag and the lower mold not being able to be separated quickly and effectively.

[0006] To achieve the above objectives, the present invention provides a soft bag making apparatus, comprising: a clamp for holding a soft bag;

[0007] The upper mold has a first heating area on its bottom surface and can be driven to reciprocate along a first direction.

[0008] The upper cooling plate is connected to the bottom surface of the upper mold through an elastic telescopic member. The upper cooling plate is located inside the first heating area, and the bottom surface of the upper cooling plate is provided with several vacuum suction cups.

[0009] The lower mold has a second heating area on its top surface. The projection surfaces of the second heating area and the first heating area in the first direction coincide. The lower mold can be driven to reciprocate along the first direction.

[0010] A lower cooling plate is embedded in the top surface of the lower mold, and the lower cooling plate is located inside the second heating area;

[0011] The welding working surface is located between the upper mold and the lower mold, and the welding working surface, the bottom surface of the upper mold, and the bottom surface of the lower mold are parallel.

[0012] Preferably, the bottom surface of the upper mold is provided with a first assembly groove for accommodating the upper cooling plate, and the height of the first assembly groove in the first direction is greater than or equal to the thickness of the upper cooling plate in the first direction.

[0013] Preferably, when the bottom surface of the upper mold is located on the welding working surface, the bottom surface of the upper cooling plate is flush with the bottom surface of the upper mold; when the bottom surface of the upper mold leaves the welding working surface, the bottom surface of the upper cooling plate protrudes from the bottom surface of the upper mold.

[0014] Preferably, the elastic telescopic component includes: a hydraulic telescopic column disposed on the top surface of the upper cooling plate, a support spring disposed inside the hydraulic telescopic column, the hydraulic telescopic column being connected to the upper mold, and the axial direction of a plurality of the hydraulic telescopic columns being parallel to the first direction.

[0015] Preferably, a first heat insulation gap is provided between the side of the first assembly groove and the side of the upper cooling plate, and the first heat insulation gap is between 2-4 mm.

[0016] Preferably, the top surface of the lower mold is provided with a second assembly groove for accommodating the lower cooling plate, and a second heat insulation gap is provided between the side of the second assembly groove and the side of the lower cooling plate, the second heat insulation gap being less than 1mm.

[0017] Preferably, the top surface of the lower cooling plate is flush with the top surface of the lower mold.

[0018] Preferably, the distance between the welding working surface and the top surface of the lower mold is between 8-12mm, and the distance between the welding working surface and the bottom surface of the upper mold is between 45-50mm.

[0019] Preferably, a plurality of the vacuum suction cups are embedded in the bottom surface of the cooling plate, and each of the vacuum suction cups is connected to a vacuum pumping device through a gas pipe.

[0020] Accordingly, the present invention also provides a control method for a flexible bag making apparatus, applied to any of the above-mentioned flexible bag making apparatuses, the control method comprising:

[0021] The clamp is controlled to move the soft bag to the welding working surface until the area of ​​the soft bag to be melted is directly below the first heating area. Then the upper mold is driven to descend and the lower mold is driven to rise until the upper mold and the lower mold cooperate to clamp the soft bag. At this time, the first heating area and the second heating area are respectively in contact with the area of ​​the soft bag to be melted.

[0022] After the soft bag is made, the vacuum suction cup is controlled to adsorb the top surface of the soft bag, and the upper mold is driven to rise and the lower mold is driven to fall. The soft bag rises synchronously with the upper mold. When the bottom surface of the upper mold leaves the welding working surface, the elastic telescopic component supports the upper cooling plate, causing the upper cooling plate to fall relative to the upper mold, so as to form a certain supporting effect on the soft bag.

[0023] After the soft bag rises to a certain height synchronously with the upper mold, the vacuum suction cup is controlled to stop adhering to the top surface of the soft bag or the vacuum suction cup is controlled to blow air onto the soft bag. Combined with the supporting effect of the upper cooling plate on the soft bag and the effect of the soft bag's own gravity, the soft bag leaves the bottom surface of the upper mold. The fixture is then controlled to move the completed soft bag to the designated position.

[0024] Compared to the aforementioned background technology, the flexible bag making apparatus provided by this invention has the following beneficial effects: After the flexible bag is made, several vacuum suction cups set on the bottom surface of the upper cooling plate form a certain adsorption effect on the finished flexible bag, allowing the flexible bag to rise synchronously with the upper mold and leave the lower mold. When the bottom surface of the upper mold leaves the welding working surface, the upper cooling plate is supported by an elastic telescopic member, causing the upper cooling plate to descend relative to the upper mold, thereby providing a certain supporting effect on the flexible bag and giving the flexible bag a tendency to move away from the bottom surface of the upper mold. After the flexible bag rises synchronously with the upper mold to a certain height, the vacuum suction cups are controlled to stop adsorbing the top surface of the flexible bag or to blow air onto the flexible bag. Combined with the supporting effect of the upper cooling plate on the flexible bag and the effect of the flexible bag's own gravity, the flexible bag can quickly leave the bottom surface of the upper mold, effectively realizing the separation of the flexible bag from the upper mold and improving the production efficiency of the flexible bag. The control method of the flexible bag making apparatus used in this invention also has the above-mentioned beneficial effects. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a cross-sectional schematic diagram of the soft bag making apparatus provided in an embodiment of the present invention;

[0027] Figure 2 This is a plan view of the clamp provided in an embodiment of the present invention when holding a soft bag.

[0028] Specifically, 1-Upper mold; 101-First heating zone; 102-First assembly slot; 2-Upper cooling plate; 3-Lower mold; 301-Second heating zone; 302-Second assembly slot; 4-Lower cooling plate; 5-Soft bag; 501-Opening tube; 502-Area to be heated and melted; 503-Bag cavity; 6-Elastic telescopic component; 7-Clamp; 8-Welding working surface; 9-Vacuum suction cup. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, in order to achieve the above objectives, the present invention provides a bag making device for a soft bag 5, comprising: a clamp 7, an upper mold 1 and a lower mold 3, wherein the clamp 7 is used to clamp the soft bag 5, and the end of the soft bag 5 is provided with an opening tube 501, and the clamp 7 drives the soft bag 5 to move by clamping the opening tube 501.

[0032] The bottom surface of the upper mold 1 is provided with a first heating area 101, which is used for the top surface of the heat-melting soft bag 5. The upper mold 1 can be driven to reciprocate along a first direction, specifically, the upper mold 1 can be driven to reciprocate along a vertical direction, wherein the first direction is... Figure 1In the X direction. The top surface of the lower mold 3 is provided with a second heating area 301. The projection surface of the second heating area 301 and the first heating area 101 in the first direction coincides. The second heating area 301 is used for the bottom surface of the hot melt soft bag 5. The lower mold 3 can be driven to reciprocate along the first direction.

[0033] An upper cooling plate 2 is provided on the bottom surface of the upper mold 1. Several vacuum suction cups 9 are provided on the bottom surface of the upper cooling plate 2. After the soft bag 5 is made, the vacuum suction cups 9 on the bottom surface of the upper cooling plate 2 form a certain adsorption effect on the made soft bag 5, allowing the soft bag 5 to rise synchronously with the upper mold 1 and leave the lower mold 3, ensuring that the soft bag 5 will not stick to the lower mold 3 due to its own gravity. In addition, the upper cooling plate 2 is connected to the upper mold 1 through an elastic telescopic member 6. The telescopic direction of the elastic telescopic member 6 is parallel to the first direction, ensuring that the upper cooling plate 2 can reciprocate relative to the upper mold 1 in the first direction. After the bottom surface of the upper mold 1 leaves the welding working surface 8, the elastic telescopic member 6 can support the upper cooling plate 2 and lower the upper cooling plate 2 relative to the upper mold 1 to form a certain supporting effect on the soft bag 5 adsorbed on the upper mold 1. When the soft bag 5 rises to a certain height synchronously with the upper mold 1, the vacuum suction cup 9 is controlled to stop adsorbing the top surface of the soft bag 5 or the vacuum suction cup 9 is controlled to blow air onto the soft bag 5. The soft bag 5 is quickly pushed away from the upper mold 1 by the upper cooling plate 2, effectively avoiding sticking to the upper mold 1.

[0034] like Figure 1 and Figure 2 As shown, it should be noted that the upper cooling plate 2 is located inside the first heating zone 101. When the first heating zone 101 contacts the soft bag 5, it ensures that the area where the top surface of the soft bag 5 is in contact with the bottom surface of the upper cooling plate 2 will not be melted by heat. This area is also the area where the bag cavity 503 is formed on the soft bag 5. The lower cooling plate 4 is embedded in the top surface of the lower mold 3. The lower cooling plate 4 is located inside the second heating zone 301 and has the same function as the upper cooling plate 2. When the second heating zone 301 contacts the soft bag 5, it ensures that the area where the bottom surface of the soft bag 5 is in contact with the top surface of the lower cooling plate 4 will not be melted by heat. It should be further noted that both the upper cooling plate 2 and the lower cooling plate 4 are provided with fluid channels inside. Low-temperature and constant-temperature heat exchange mediums pass through the fluid channels in fluid form, so that the upper cooling plate 2 and the lower cooling plate 4 are always kept within the set temperature range to achieve the purpose of cooling. The heat exchange medium is selected from one of coolant, pure water, and air.

[0035] A welding working surface 8 is provided between the upper mold 1 and the lower mold 3. The welding working surface 8 is a plane, and the bottom surfaces of the upper mold 1 and the lower mold 3 are parallel. During the production of the soft bag 5, the upper mold 1 is lowered and the lower mold 3 is raised by controlling the drive, so that the upper mold 1 and the lower mold 3 cooperate to clamp the soft bag 5. At this time, the first heating area 101 and the second heating area 301 respectively adhere to the heat-melting area 502 of the soft bag 5. After the soft bag 5 is produced, the upper mold 1 is raised and the lower mold 3 is lowered by controlling the drive, so that the soft bag 5 has the initial conditions to be separated from the upper mold 1 and the lower mold 3.

[0036] When manufacturing the soft bag 5, the control clamp 7 moves the soft bag 5 to the welding working surface 8 until the area 502 of the soft bag 5 to be heated is directly below the first heating area 101. Then, the control drives the upper mold 1 to descend and the lower mold 3 to rise until the upper mold 1 and the lower mold 3 cooperate to clamp the soft bag 5. At this time, the first heating area 101 and the second heating area 301 are respectively in contact with the area 502 of the soft bag 5 to be heated. After the soft bag 5 is manufactured, the control vacuum suction cup 9 is used to adsorb the top surface of the soft bag 5. At the same time, the control drives the upper mold 1 to rise and the lower mold 3 to descend, and the soft bag 5 rises synchronously with the upper mold 1. After the bottom surface of the upper mold 1 leaves the welding working surface 8, the elastic telescopic component 6 supports the upper cooling plate 2, causing the upper cooling plate 2 to descend relative to the upper mold 1, so as to form a certain supporting effect on the soft bag 5. After the soft bag 5 rises to a certain height synchronously with the upper mold 1, the vacuum suction cup 9 is controlled to stop adhering to the top surface of the soft bag 5 or the vacuum suction cup 9 is controlled to blow air onto the soft bag 5. Combined with the supporting effect of the upper cooling plate 2 on the soft bag 5 and the effect of the soft bag 5's own gravity, the soft bag 5 leaves the bottom surface of the upper mold 1. The clamp 7 is controlled to move the completed soft bag 5 to the designated position, completing the production process of a single soft bag 5.

[0037] In some embodiments of the present invention, a first assembly groove 102 is provided on the bottom surface of the upper mold 1. The first assembly groove 102 is used to accommodate the upper cooling plate 2. It should be noted that the height H1 of the first assembly groove 102 in the first direction is greater than or equal to the thickness H2 of the upper cooling plate 2 in the first direction, so as to ensure that the upper cooling plate 2 can be completely inserted into the first assembly groove 102. Specifically, when the bottom surface of the upper mold 1 is located on the welding working surface 8, the bottom surface of the upper cooling plate 2 is flush with the bottom surface of the upper mold 1, thereby avoiding the upper mold 1 and the lower mold 3 from pressing the soft bag 5 together, while ensuring that the first heating area 101 can be fully attached to the top surface of the soft bag 5, so as to further ensure that the area 502 of the soft bag 5 to be melted can be fully melted. When the bottom surface of the upper mold 1 leaves the welding working surface 8, the bottom surface of the upper cooling plate 2 protrudes from the bottom surface of the upper mold 1, which can ensure that the upper cooling plate 2 descends relative to the upper mold 1 under the supporting action of the elastic telescopic member 6, and forms a certain supporting action on the soft bag 5 adsorbed on the upper mold 1, so that the soft bag 5 can quickly detach from the upper mold 1.

[0038] In some embodiments of the present invention, the elastic telescopic member 6 includes: a hydraulic telescopic column disposed on the top surface of the upper cooling plate 2, a support spring (not shown in the figure) disposed inside the hydraulic telescopic column, the hydraulic telescopic column being connected to the upper mold 1, and the axial direction of several hydraulic telescopic columns being parallel to the first direction, that is, the telescopic direction of the hydraulic telescopic columns and the elastic telescopic member 6 being consistent. Simultaneously, the hydraulic telescopic column being connected to the upper mold 1 allows for limiting and correcting the path of the upper cooling plate 2 as it reciprocates along the first direction, ensuring that the upper cooling plate 2 can accurately enter and exit the first assembly slot 102, while improving the dimensional accuracy of the bag cavity 503 during molding and increasing the pass rate of the soft bag 5 during production. The support spring is used to elastically support the hydraulic telescopic column, allowing it to return to its initial telescopic stroke after the hydraulic telescopic column is no longer subjected to the supporting force, thus providing a supporting effect on the upper cooling plate 2.

[0039] In some embodiments of the present invention, a first heat insulation gap L1 is provided between the side of the first assembly groove 102 and the side of the upper cooling plate 2. The first heat insulation gap L1 is mainly used to isolate the upper mold 1 and the upper cooling plate 2, so as to avoid the heat generated by the first heating area 101 during operation from being transferred to the upper cooling plate 2 through the upper mold 1 by heat transfer, which would affect the cooling effect of the upper cooling plate 2 and increase the power consumption of the upper cooling plate 2. Optionally, the first heat insulation gap L1 is between 2-4 mm, and can be further specified as 3 mm, so as to minimize the heat transfer between the upper mold 1 and the upper cooling plate 2 without affecting the manufacturing accuracy of the soft bag 5.

[0040] In some embodiments of the present invention, a second mounting groove 302 is provided on the top surface of the lower mold 3. The second mounting groove 302 is used to accommodate the lower cooling plate 4. A first heat insulation gap L2 is provided between the side surface of the second mounting groove 302 and the side surface of the lower cooling plate 4. The first heat insulation gap L2 has the same function as the first heat insulation gap L1, mainly used to isolate the lower mold 3 and the lower cooling plate 4, so as to avoid the heat generated by the second heating area 301 during operation being transferred to the lower cooling plate 4 through the upper mold 1 by heat transfer, which would affect the cooling effect of the upper cooling plate 2 and increase the power consumption of the lower cooling plate 4. Optionally, the first heat insulation gap L2 is less than 1mm, so as not to affect the fixture 7 from accurately placing the soft bag 5 on the upper mold 1, while minimizing the heat transfer between the lower mold 3 and the lower cooling plate 4. In addition, the top surface of the lower cooling plate 4 is flush with the top surface of the lower mold 3, which can further ensure that the fixture 7 accurately places the soft bag 5 on the upper mold 1.

[0041] In some embodiments of the present invention, the distance between the welding working surface 8 and the top surface of the lower mold 3 is between 8-12mm, and the distance between the welding working surface 8 and the bottom surface of the upper mold 1 is between 45-50mm. Preferably, the welding working surface 8 is 10mm away from the top surface of the lower mold 3 and 47mm away from the top surface of the upper mold 1. After the soft bag 5 is made, the lower mold 3 can be driven to descend a certain distance by control. At the same time, under the adsorption of the vacuum suction cup 9, the soft bag 5 is first separated from the lower mold 3. The distance between the welding working surface 8 and the upper mold 1 is set to be large to ensure that the upper mold 1 can be driven to rise a sufficient distance so that the soft bag 5 can be pushed away from the upper mold 1 by the upper cooling plate 2. Sufficient operating space is reserved for the upper cooling plate 2 in the first direction, and the clamping operation of the clamp 7 on the soft bag 5 is also convenient.

[0042] It should be noted that several vacuum suction cups 9 are embedded in the bottom surface of the cooling plate, wherein the bottom surface of the vacuum suction cups 9 protrudes from the bottom surface of the upper mold 1 to ensure that the vacuum suction cups 9 can form a stable adsorption. In addition, several vacuum suction cups 9 are connected to a vacuum pumping device through gas pipes, and the vacuum pumping device provides a stable negative pressure to the vacuum suction cups 9. Of course, the vacuum pumping device can also provide positive pressure so that the vacuum suction cups 9 can play a certain back-blowing role, thereby quickly blowing the soft bag 5 on the upper mold 1 away.

[0043] In some embodiments of the present invention, a plurality of pressure sensors are embedded in the first heating area 101 of the upper mold 1 and the second heating area 301 of the lower mold 3, respectively. Each pressure sensor integrates a temperature detection module. When the first heating area 101 and the second heating area 301 are respectively attached to the heat-melting area 502 of the soft bag 5 to heat melt the soft bag 5, the clamping force of the first heating area 101 and the second heating area 301 on the soft bag 5 is obtained in a timely manner through the plurality of pressure sensors to ensure that the soft bag 5 can be heat melted under the action of a suitable clamping force, thereby ensuring the pass rate of the soft bag 5 after molding. Simultaneously, the temperature of the first heating area 101 and the second heating area 301 is obtained in a timely manner through the temperature detection module, and a temperature-pressure relationship model is established. When the temperature detection module detects that the temperature of the first heating area 101 and the second heating area 301 is lower than the set value (e.g., 160℃), the upper mold 1 is further controlled to descend a certain distance and the lower mold 3 is controlled to rise a certain distance, increasing the clamping force on the heat-melting area 502 of the soft bag 5 to compensate for the material flowability and ensure the heat-melting effect of the heat-melting area 502 of the soft bag 5. When the temperature detection module detects that the temperature of the first heating area 101 and the second heating area 301 is higher than the set value (e.g., 210℃), the upper mold 1 is controlled to rise a certain distance and the lower mold 3 is controlled to descend a certain distance, reducing the clamping force on the heat-melting area 502 of the soft bag 5 to avoid material decomposition and ensure the heat-melting effect of the heat-melting area 502 of the soft bag 5. It should be noted that the pressure sensor is directly embedded in the hot-melt area of ​​the lower mold 3 to avoid affecting the flatness of the mold. At the same time, several pressure sensors are evenly distributed to ensure the uniformity of pressure distribution at various positions where the upper mold 1 and the lower mold 3 are in contact with the soft bag 5, thereby further ensuring the pass rate of the soft bag 5 after molding.

[0044] The control method of the soft bag 5 bag-making device used in this invention specifically includes the following steps: In the initial state, the upper mold 1 is located above the welding working surface 8 and at a certain distance from the welding working surface 8. Under the weight of the upper cooling plate 2, the bottom surface of the upper cooling plate 2 protrudes from the bottom surface of the upper mold 1. The control clamp 7 moves the soft bag 5 to the position of the welding working surface 8 until the area 502 of the soft bag 5 to be heated is located directly below the first heating area 101. Then, the control drives the upper mold 1 to descend and the lower mold 3 to rise until the upper mold 1 and the lower mold 3 cooperate to clamp the soft bag 5. At this time, the first heating area 101 and the second heating area 301 respectively adhere to the area 502 of the soft bag 5 to be heated. At this time, the upper cooling plate 2 enters the first assembly groove 102 to avoid affecting the adhesion of the first heating area 101 to the area 502 of the soft bag 5 to be heated. The elastic telescopic component 6 is compressed and possesses a certain elastic potential energy. After the soft bag 5 is made, the vacuum suction cup 9 is controlled to adhere to the top surface of the soft bag 5. At the same time, the upper mold 1 is driven to rise and the lower mold 3 is driven to fall. The soft bag 5 rises synchronously with the upper mold 1. When the bottom surface of the upper mold 1 leaves the welding working surface 8, the elastic telescopic component 6 supports the upper cooling plate 2, causing the upper cooling plate 2 to fall relative to the upper mold 1, so as to form a certain supporting effect on the soft bag 5. After the soft bag 5 rises synchronously with the upper mold 1 to a certain height, the vacuum suction cup 9 is controlled to stop adhering to the top surface of the soft bag 5 or the vacuum suction cup 9 is controlled to blow air onto the soft bag 5. Combined with the supporting effect of the upper cooling plate 2 on the soft bag 5 and the effect of the soft bag 5's own gravity, the soft bag 5 leaves the bottom surface of the upper mold 1. The clamp 7 is controlled to move the made soft bag 5 to the designated position, completing the production process of a single soft bag 5.

[0045] In summary, after the soft bag 5 is manufactured, several vacuum suction cups 9 located on the bottom surface of the upper cooling plate 2 create a certain suction effect on the manufactured soft bag 5, allowing the soft bag 5 to rise synchronously with the upper mold 1 and leave the lower mold 3. When the soft bag 5 rises synchronously with the upper mold 1 to a certain height, the vacuum suction cups 9 are controlled to stop adhering to the top surface of the soft bag 5 or the vacuum suction cups 9 are controlled to blow air onto the soft bag 5. Combined with the supporting effect of the upper cooling plate 2 on the soft bag 5 and the effect of the soft bag 5's own gravity, the soft bag 5 quickly leaves the bottom surface of the upper mold 1, effectively achieving the separation of the soft bag 5 from the upper mold 1 and improving the production efficiency of the soft bag 5.

[0046] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0047] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A flexible bag making apparatus, characterized in that, include: Clamps are used to hold soft bags; The upper mold has a first heating area on its bottom surface and can be driven to reciprocate along a first direction. The upper cooling plate is connected to the bottom surface of the upper mold through an elastic telescopic member. The upper cooling plate is located inside the first heating area, and the bottom surface of the upper cooling plate is provided with several vacuum suction cups. The lower mold has a second heating area on its top surface. The projection surfaces of the second heating area and the first heating area in the first direction coincide. The lower mold can be driven to reciprocate along the first direction. A lower cooling plate is embedded in the top surface of the lower mold, and the lower cooling plate is located inside the second heating area; The welding working surface is located between the upper mold and the lower mold, and the welding working surface, the bottom surface of the upper mold, and the bottom surface of the lower mold are parallel.

2. The soft bag making apparatus according to claim 1, characterized in that, The bottom surface of the upper mold is provided with a first assembly groove for accommodating the upper cooling plate, and the height of the first assembly groove in the first direction is greater than or equal to the thickness of the upper cooling plate in the first direction.

3. A soft bag making apparatus according to claim 2, characterized in that, When the bottom surface of the upper mold is located on the welding working surface, the bottom surface of the upper cooling plate is flush with the bottom surface of the upper mold; when the bottom surface of the upper mold leaves the welding working surface, the bottom surface of the upper cooling plate protrudes from the bottom surface of the upper mold.

4. A soft bag making apparatus according to claim 1, characterized in that, The elastic telescopic component includes: a hydraulic telescopic column disposed on the top surface of the upper cooling plate, a support spring disposed inside the hydraulic telescopic column, the hydraulic telescopic column being connected to the upper mold, and the axial direction of a plurality of the hydraulic telescopic columns being parallel to the first direction.

5. A soft bag making apparatus according to claim 2, characterized in that, A first heat insulation gap is provided between the side of the first assembly slot and the side of the upper cooling plate, and the first heat insulation gap is between 2-4 mm.

6. A soft bag making apparatus according to claim 1, characterized in that, The top surface of the lower mold is provided with a second assembly groove for accommodating the lower cooling plate. A second heat insulation gap is provided between the side of the second assembly groove and the side of the lower cooling plate. The second heat insulation gap is less than 1 mm.

7. A flexible bag making apparatus according to claim 6, characterized in that, The top surface of the lower cooling plate is flush with the top surface of the lower mold.

8. A soft bag making apparatus according to claim 2, characterized in that, The distance between the welding working surface and the top surface of the lower mold is between 8-12mm, and the distance between the welding working surface and the bottom surface of the upper mold is between 45-50mm.

9. A flexible bag making apparatus according to any one of claims 1-8, characterized in that, Several vacuum suction cups are embedded in the bottom surface of the cooling plate, and each of the vacuum suction cups is connected to a vacuum pumping device through a gas pipe.

10. A control method for a flexible bag making apparatus, applied to the flexible bag making apparatus according to any one of claims 1-8, characterized in that, The control method includes: The clamp is controlled to move the soft bag to the welding working surface until the area of ​​the soft bag to be melted is directly below the first heating area. Then the upper mold is driven to descend and the lower mold is driven to rise until the upper mold and the lower mold cooperate to clamp the soft bag. At this time, the first heating area and the second heating area are respectively in contact with the area of ​​the soft bag to be melted. After the soft bag is made, the vacuum suction cup is controlled to adsorb the top surface of the soft bag, and the upper mold is driven to rise and the lower mold is driven to fall. The soft bag rises synchronously with the upper mold. When the bottom surface of the upper mold leaves the welding working surface, the elastic telescopic component supports the upper cooling plate, causing the upper cooling plate to fall relative to the upper mold, so as to form a certain supporting effect on the soft bag. After the soft bag rises to a certain height synchronously with the upper mold, the vacuum suction cup is controlled to stop adhering to the top surface of the soft bag or the vacuum suction cup is controlled to blow air onto the soft bag. Combined with the supporting effect of the upper cooling plate on the soft bag and the effect of the soft bag's own gravity, the soft bag leaves the bottom surface of the upper mold. The fixture is then controlled to move the completed soft bag to the designated position.

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