Bag making assembly for material distribution equipment

Abstract

The utility model belongs to the technical field of material distribution equipment, and discloses a bag making assembly for material distribution equipment, which comprises a film placing frame, a forming unit, a film drawing unit and a transverse cutting unit, the film unwinding frame is used for winding and unwinding a film bag which is vertically sealed; the forming unit is used for receiving the film bags output from the film placing frame; the film pulling unit is used for pulling a film bag to move; and the transverse cutting unit is used for thermally and transversely sealing and cutting the film bag and is arranged on the upper side of the forming unit. According to the material distribution device, a vertical sealing mechanism can be prevented from being additionally arranged in the material distribution device, the bag making efficiency is effectively improved, the failure rate can be reduced, and appearance defects are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of material dispensing equipment, and in particular relates to a bag making component used for material dispensing equipment. Background Art

[0002] Among the current bag-type material dispensing equipment, one type of material dispensing equipment uses the traditional packaging machine bag-making mode to make bags on the roll film and wait for the medicine to be placed. For this type of packaging machine, a vertical sealing mechanism is generally provided, which makes the roll film vertically sealed on the spot, and then further transports, heat-seals and cuts the vertically sealed roll film to achieve loading. This results in the overall structure of the material dispensing equipment being bloated, prone to failure, and it is difficult to ensure that the vertical sealing edge is flat during the vertical sealing process, resulting in insufficient appearance. Utility Model Content

[0003] In order to solve the above technical problems, the utility model discloses a bag making component for material dispensing equipment, which can avoid the need for an additional vertical sealing mechanism in the material dispensing equipment, effectively improve the bag making efficiency, and reduce the failure rate and avoid appearance defects.

[0004] The specific technical solution of the utility model is as follows:

[0005] A bag making assembly for a material dispensing device, comprising:

[0006] A film placing rack, the film placing rack is used to roll up the film bags that have been vertically sealed;

[0007] A molding unit, the molding unit is used to receive the film bag output from the film placing rack;

[0008] A film pulling unit, used for pulling the film bag to move; and

[0009] The cross-cutting unit is used for heat-sealing and cutting the film bag, and the cross-cutting unit is arranged on the upper side of the forming unit.

[0010] The present application uses a film-pulling unit to enable the film bag that has completed vertical sealing to move continuously along the molding unit, so as to drive the film bag to be located in the cross-cutting unit and directly perform heat cross-sealing and cutting in the cross-cutting unit, thereby improving the bag-making efficiency of the entire bag-making assembly, thereby effectively improving the material distribution efficiency; and because the film bag has completed vertical sealing, the film bag finally obtained does not have the defect of asymmetric vertical sealing edges, thereby effectively improving the aesthetics of the film bag.

[0011] Preferably, the molding unit comprises:

[0012] A fixed or free-standing mandrel; and

[0013] A fixed former, wherein a forming space is provided between the former and the core rod, and is used for allowing the film bag to pass through the forming space in an open state;

[0014] When the mandrel is in a free state, the molding unit further comprises:

[0015] The limiting mechanism is used to limit the vertical movement of the core rod.

[0016] The core rod can guide the movement of the film bag and keep the film bag in an open state at the molding unit; when the core rod is set in a free state, the movement is limited by a limiting mechanism and it is not fixed on the bag making assembly. Therefore, compared with the prior art, it is easy to assemble into the bag making assembly and easy to remove for maintenance. That is to say, the staff can remove the core rod regularly or irregularly for cleaning and disinfection, so as to maintain the cleanliness of the material after bagging.

[0017] Preferably, the limiting mechanism comprises:

[0018] A supporting roller, the supporting roller being located at one end of the mandrel for bagging to limit the downward displacement of the mandrel; and

[0019] The limiting rollers are arranged on two opposite sides of the mandrel and are used to limit the lateral displacement of the mandrel.

[0020] In the prior art, the mandrel is fixed to the seat of the bag-making assembly by a fixing part, which means that the fixing part needs to be operated during the process of disassembling and assembling the mandrel. Since the bag-making assembly requires that each structural component be as compact as possible, the operation of the fixing part is relatively complicated. In the present application, the supporting roller can support the mandrel and limit the lateral displacement of the mandrel by a limiting roller, so that the mandrel can be stably assembled in the bag-making assembly without passing through a fixing part. It can be seen that this structure can also simplify the process of removing the mandrel, thereby greatly facilitating the disassembly and assembly of the mandrel.

[0021] Preferably, the core rod is provided with at least one bag stretching member along its axial direction for keeping the film bag open.

[0022] The film bag moves in the molding space through the action of the film pulling unit, so there is continuous friction between the inner side of the film bag and the outer side of the core rod in the molding space. At this time, the film pulling unit needs to use a relatively large power to drive the film bag to move. On the basis of setting a bag stretching part, the contact area between the film bag and the core rod is effectively reduced, so that the film bag can be better driven by the film pulling unit.

[0023] Preferably, the stretching bag piece is in short contact with the film bag.

[0024] The short contact can effectively reduce the contact area between the bag stretching member 1 and the film bag, thereby reducing the friction between the two, thereby better meeting the driving purpose of the film stretching unit.

[0025] Preferably, a central groove is provided at one end of the mandrel for bag entry, wherein one of the bag stretching parts is configured as a mandrel roller and is arranged in the central groove, and the outer circumference of the mandrel roller protrudes from the outside of the mandrel in a direction perpendicular to the axis of the mandrel.

[0026] One of the bag stretching parts is set at the end of the core rod used for bag entry to reduce the resistance between the film bag and the core rod as early as possible; because the core rod roller relatively enlarges the open cross-sectional area of ​​the rolled film, it can avoid the film bag from contacting the core rod after passing through the core rod roller, thereby reducing the contact area between the core rod and the rolled film, thereby better enabling the film stretching unit to drive the film bag.

[0027] Preferably, one end of the core rod used for bag entry is provided with a bag opening structure for opening the film bag.

[0028] When the film bag roll of the present application is placed on the film rack, the whole is in a curved closed state. Therefore, in the process of driving it to the molding space, it should be opened. The present application realizes the opening of the film bag through the bag opening structure to ensure that the film bag enters the molding space with a hollow structure, thereby preparing for material unloading.

[0029] Preferably, the cross-cutting unit comprises:

[0030] A sealing and cutting mechanism 1 and a sealing and cutting mechanism 2 which can move toward and away from each other, wherein at least one of the sealing and cutting mechanisms has a heating element;

[0031] A driving mechanism, used for driving at least one of the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 to move; and

[0032] A cutter component is connected to the sealing and cutting mechanism one or the sealing and cutting mechanism two and is used for cutting the film bag.

[0033] The cross-cutting unit can cut off the film bag driven to its position and perform heat cross-seal on the film bag above the cutter member to achieve the bottom sealing of the film bag.

[0034] Preferably, the end of the mandrel used for discharging the bag is provided with a second bag stretching member.

[0035] After the cross-cutting unit completes the hot cross-seal cutting, the film bag below the cutter component will be in a closed state due to the squeezing of the sealing and cutting mechanism one and the sealing and cutting mechanism two. Therefore, in order to keep this part of the film bag open while continuing to move upward, the present application drives the film bag below the cutter component to move in the opposite direction after cutting the film bag, reopens it through the bag stretching member two, and then drives the film bag to continue to move upward, thereby meeting the continuous bag making requirements through intermittent forward and reverse movements.

[0036] Preferably, the sealing and cutting mechanism 1 comprises:

[0037] Thermal insulation board 1; and

[0038] A sealing and cutting mold 1, wherein the sealing and cutting mold 1 and the heat insulation plate 1 are connected via an intermediate piece so as to move synchronously relative to the sealing and cutting mechanism 2;

[0039] Wherein, the heating element is arranged on the sealing and cutting mold 1, and in the axial direction of the core rod, the sealing and cutting mold 1 is located on the upper side of the heat insulation plate 1, and an isolation zone is provided between the two;

[0040] The cutter component is connected to the sealing and cutting mechanism, and the cutter of the cutter component is arranged in the isolation belt.

[0041] The heat insulation board can insulate the heating element and, on the basis of providing movement space for the cutter element with the isolation belt, further prevent the heat provided by the heating element from diffusing to the film bag below the cutter element, thereby preventing the film bag below the cutter element from being sealed by heat transverse sealing.

[0042] Preferably, a second heat insulation board is provided between the middle piece and the first sealing and cutting mold.

[0043] The provision of the second heat insulation board can prevent heat from being transferred from the sealing and cutting mold one to the heat insulation board one via the middle piece, thereby further preventing the film bag below the cutting knife component from being sealed during the hot transverse sealing process.

[0044] Preferably, the driving mechanism comprises a power member 1, the power member 1 is movably connected to the intermediate member and connected to the cutter member;

[0045] The sealing and cutting mechanism 1 further comprises an elastic component, and the elastic component is connected between the middle component and the power component 1;

[0046] Wherein, the power member 1 is slidably connected to the middle member; and the sealing and cutting mechanism 2 has a groove portion that docks with the isolation belt.

[0047] When the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 move toward each other, the two contact and clamp the film bag. During this process, the sealing and cutting mechanism 1 or the sealing and cutting mechanism 2 has an excess stroke, so that when the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 are relatively stationary, the cutter component continues to move to cut the film bag. At this time, the elastic component is deformed and compressed. After cutting the roll film, the elastic component is deformed and restored, causing the cutter component to move in the opposite direction. Therefore, when the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 move away from each other, the movement path of the film bag is cleared, thereby meeting the requirements of bag making continuity.

[0048] Compared with the prior art, the utility model can quickly realize the disassembly and assembly of the core rod, so that the staff can conveniently remove the core rod as needed for cleaning and disinfection, thereby avoiding contamination of the material after entering the bag; the utility model does not need to set up a vertical sealing mechanism, which effectively reduces the failure rate and avoids the appearance defects caused by the asymmetry of the vertical sealing edge. At the same time, since there is no vertical sealing mechanism, the bag making efficiency is also effectively improved; in addition, the bag making continuity of the utility model is high, which can effectively improve the distribution efficiency of the material distribution equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a front view of an embodiment of the utility model;

[0050] Figure 2 This is a schematic diagram of the arrangement of the mandrel in the embodiment of the utility model;

[0051] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0052] Figure 4 for Figure 2 A magnified image of point A;

[0053] Figure 5 for Figure 2 A magnified view of point B;

[0054] Figure 6 It is a schematic diagram of the arrangement of the driving mechanism in the embodiment of the utility model.

[0055] In the figure: 1-film placing rack; 2-film bag; 3-core rod; 4-former; 5-seat; 6-folding roller; 7-film pulling roller; 8-supporting roller; 9-limiting roller; 10-bag stretching component one; 11-bag opening structure; 12-cutter component; 13-bag stretching component two; 14-insulation board one; 15-sealing and cutting mold one; 16-middle component; 17-sealing and cutting mold two; 18-power component one; 19-elastic component; 20-gear; 21-power component two; 22-groove; 23-slide rod; 24-insulation board two. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0057] like Figure 1 to Figure 4 As shown, a bag making assembly for material distribution equipment includes a film placing frame 1, a molding unit, a film pulling unit and a cross-cutting unit; the film placing frame 1 is used for rolling up the film bags 2 that have been vertically sealed; the molding unit is used for receiving the film bags 2 output from the film placing frame 1; the film pulling unit is used for pulling the film bags 2 to move; the cross-cutting unit is used for heat-seal and cut the film bags 2, and the cross-cutting unit is arranged on the upper side of the molding unit.

[0058] In the present embodiment, the film bag 2 is a film bag 2 that has been vertically sealed. Therefore, the present embodiment does not need to additionally set up a vertical sealing mechanism, thereby simplifying the structure of the assembly, making the overall structure of the present embodiment simple and effectively reducing the failure rate. On this basis, the problem of low aesthetics caused by the asymmetry of the vertical sealing edges during the vertical sealing process of the existing bag making is avoided. In addition, since the present embodiment reduces the vertical sealing mechanism, the bag making efficiency is also effectively improved.

[0059] In some technical solutions of this embodiment, the molding unit includes a mandrel 3 fixedly arranged on a seat body 5. In some other technical solutions, the mandrel 3 is in a free state. Specifically, the molding unit includes a mandrel 3 in a free state, a fixed former 4, and a limiting mechanism; there is a molding space between the former 4 and the mandrel 3, which is used to allow the film bag 2 to pass through the molding space in an open state; the limiting mechanism is used to limit the mandrel 3 to move vertically. The mandrel 3 in a free state is described in detail below.

[0060] In this embodiment, the bag making assembly in the material distribution device has a seat body 5, the film placing frame 1 is located on one side of the seat body 5, the molding unit and the film drawing unit are both arranged on the seat body 5, specifically, the former 4 is fixedly arranged on the seat body 5 to form a channel for the film bag 2 to pass through, the film placing frame 1 conveys the film bag 2 to the above-mentioned channel through a plurality of folding rollers 6, and a core rod 3 is arranged in the channel, the core rod 3 is not fixedly connected to the seat body 5, but is limited by a limiting mechanism in a free state by its own gravity to form a molding space between the outer side of the core rod 3 and the inner side of the former 4, so that in the process of bag making, the film bag 2 passes through the molding space. The film drawing unit is composed of at least one group of film drawing rollers 7, each group of film drawing rollers 7 has two, the film drawing rollers 7 are rotatably arranged on the seat body 5, driven by a motor, and the two film drawing rollers 7 in any group are pressed by interference, and the surface is also covered with soft rubber to increase the force between the film bag 2 and the film drawing roller 7, so as to achieve the purpose of film drawing. In this embodiment, the bag making process is from bottom to top, that is, on the basis of the vertical arrangement of the core rod 3, the film bag 2 on the film rack 1 moves from the bottom of the core rod 3 to the top of the core rod 3. In other words, the bottom of the core rod 3 is the end of the core rod 3 for entering the bag, and the top of the core rod 3 is the end of the core rod 3 for exiting the bag. Based on this, there must be an opening at the upper end of the core rod 3 for the film bag 2 to move out of the forming space. Therefore, when it is necessary to remove the core rod 3 for cleaning and disinfection, the core rod 3 can be directly taken out from the above opening. Similarly, when installing the core rod 3, the core rod 3 can be placed from the opening. Even if the above operation process is difficult to take and put, only the limit mechanism needs to be disassembled. Therefore, compared with the prior art, under ideal conditions, the core rod 3 can be directly taken and put in the channel for the film bag 2 to pass through. Even if the conditions are difficult, only the limit mechanism needs to be disassembled. No matter what method is used, the core rod 3 fixedly set on the seat body 5 can be avoided, thereby greatly providing convenience for the staff.

[0061] like Figure 1 and Figure 2As shown, in this embodiment, the limiting mechanism includes a supporting roller 8 and a limiting roller 9; the supporting roller 8 is located at one end of the mandrel 3 for bagging to limit the downward displacement of the mandrel 3; the limiting roller 9 is arranged on the opposite sides of the mandrel 3 to limit the lateral displacement of the mandrel 3. When the mandrel 3 is installed in the bag making mechanism, the supporting roller 8 is located at the lower end of the mandrel 3, and the limiting roller 9 is located on the side of the mandrel 3. The supporting roller 8 provides support for the mandrel 3, so that the mandrel 3 maintains a relative position with the seat body 5 in a certain area under its own weight. During the conveying process of the film bag 2, due to the friction relationship between the film bag 2 and the mandrel 3, the mandrel 3 may have a relative displacement with the seat body 5 in the above-mentioned area, but under the condition of the mandrel 3's own gravity, it only moves in a small range, so the above-mentioned area is the small range of movement of the mandrel 3. At the same time, the limiting roller 9 limits the lateral displacement of the mandrel 3 to prevent the mandrel 3 from excessively moving in the lateral direction and causing obvious tilting, thereby avoiding affecting the conveying of the film bag 2. Furthermore, the mandrel 3 is provided with at least one bag stretching member 10 along its axial direction, which is used to keep the film bag 2 open. In the present embodiment, the film bag 2 is a film bag 2 that has been folded in half and sealed vertically. Therefore, the finished film bag that is finally formed by bag making only needs one opening. Since the present embodiment adopts a bag making process from bottom to top, it is necessary to keep the film bag 2 in a stretched open state in the forming space during the bag making process. Therefore, the bag stretching part 10 can enable the film bag 2 to be opened and always maintain the open state during the movement. When the film bag 2 moves in the forming space in this state, it can also reduce the contact area between the core rod 3. That is to say, the bag stretching part 10 and the film bag 2 are in short contact. The short contact includes one or more of a small area contact, a short straight line segment contact, a short arc segment contact and a point contact. Therefore, the bag stretching part 10 can also improve the driving efficiency of the film pulling unit.

[0062] In this embodiment, a middle groove is provided at one end of the mandrel 3 for bag entry, wherein a bag stretching member 10 is configured as a mandrel roller and is arranged in the middle groove. In the direction perpendicular to the axis of the mandrel 3, the outer circumference of the mandrel roller protrudes from the outer side of the mandrel 3. The mandrel roller can be one or two in parallel. After the film bag 2 enters the forming space, since the bag stretching member 10 can avoid a large friction between the film bag 2 and the mandrel 3, the mandrel roller can keep the film bag 2 open and make a gap between the inner wall of the film bag 2 and the outer wall of the mandrel 3, thereby achieving short contact through the film bag 2 and the mandrel roller, thereby improving the driving efficiency of the film drawing unit. In addition, in some special cases, the friction coefficients of various parts of the film bag 2 may be different, which may easily cause the film bag 2 to be stuck. On the basis of setting the mandrel roller, the ability of the mandrel roller to rotate relative to the mandrel 3 is utilized, so that the mandrel roller can adapt to the friction coefficient of the film bag 2 and avoid sticking through its own rotation. In another technical solution, two mandrel rollers are used, and at this time, any mandrel roller has a short contact with the film bag 2. When the friction between the film bag 2 and the mandrel roller is large, the mandrel roller can rotate, thereby achieving the purpose of avoiding jamming. Figure 4 As shown, further, one end of the mandrel 3 used for bag entry is provided with a bag opening structure 11 for opening the film bag 2. The bag opening structure 11 is located on the lower side of the mandrel roller, and is roughly an inverted triangle structure, and the top angle of the structure can be rounded. Therefore, in the early stage of process startup, the film bag 2 is manually pulled to the film pulling unit, and after the process starts and the film pulling unit is activated, the film bag 2 is driven to the bag opening structure 11 and can open the opening automatically. In this embodiment, the mandrel roller is located at one end close to the bag opening structure 11, so on the basis of using the mandrel roller to keep the film bag 2 in an open state, the bag opening structure 11 is prevented from tearing the film bag 2 during the opening process.

[0063] like Figure 5 and Figure 6As shown, in this embodiment, the cross-cutting unit includes a sealing and cutting mechanism 1 and a sealing and cutting mechanism 2 that can move toward and away from each other, as well as a driving mechanism and a cutter component 12; at least one of the sealing and cutting mechanisms has a heating element; the driving mechanism is used to drive at least one of the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 to move; the cutter component 12 is connected to the sealing and cutting mechanism 1 or the sealing and cutting mechanism 2, and is used to cut the film bag 2. When the film bag 2 is transported to the cross-cutting unit, the cross-cutting unit performs heat-transverse sealing and cutting on the film bag 2, and the film bag above the cutter component 12 is the film bag with heat-transverse sealing at the lower end, and the film bag 2 below the cutter component 12 is still not heat-transversely sealed. In this embodiment, the driving mechanism drives the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 to move synchronously, which can achieve the clamping of the finished film bag, so that the film bag 2 is cut by the cutter component 12 at a determined position. In this embodiment, when the film bag 2 is sealed and cut, the film bag 2 is squeezed by the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2, so that the opening of the film bag 2 below the cutting knife member 12 after cutting is closed. Therefore, in order to ensure that the film bag 2 remains open, the opening operation should be performed after cutting, so that the finished film bag formed after cutting can be loaded. Therefore, in this embodiment, a bag stretching part 2 13 is provided at the end of the core rod 3 for bag discharge. The bag stretching part 2 13 is two arc-shaped protrusions extending back to back. After the cutting is completed, the film bag 2 moves in the reverse direction, so that the sealed film bag 2 reopens under the action of the bag stretching part 2 13. It should be noted that in this embodiment, the film roll frame can be provided with a motor. When the film bag 2 moves in the reverse direction, the motor reverses, so that the film bag 2 is in a straightened state at any time of movement, and wrinkles of the film bag 2 can be avoided at this time.

[0064] like Figure 5As shown, in this embodiment, the sealing and cutting mechanism 1 includes a heat insulation plate 14 and a sealing and cutting mold 15; the heat insulation plate 14 and the sealing and cutting mold 15 are connected by an intermediate piece 16 to synchronously move relative to the sealing and cutting mechanism 2; the heating element is arranged on the sealing and cutting mold 15, and in the axial direction of the core rod 3, the sealing and cutting mold 15 is located on the upper side of the heat insulation plate 14, and there is an isolation zone between the two; the cutter component 12 is connected to the sealing and cutting mechanism 1, and the cutter of the cutter component 12 is arranged in the isolation zone. The sealing and cutting structure 2 includes a sealing and cutting mold 2 17. When the intermediate piece 16 is driven to move, the synchronous movement of the heat insulation plate 14 and the sealing and cutting mold 15 can be achieved. The side surfaces of the sealing and cutting mold 2 17 and the sealing and cutting mold 15 that are in relative contact have a serrated structure to better achieve the stopping of the film bag 2. The driving mechanism drives the middle piece 16 to move so that the sealing and cutting mold 15 and the cutter member 12 move. When the sealing and cutting mold 15 and the sealing and cutting mold 2 17 are in contact, the cutter member 12 acts on the film bag 2 to achieve cutting. During the cutting process, the isolation belt between the sealing and cutting mold 15 and the heat insulation board 14 can prevent heat from being transferred to the film bag 2 below the cutter member 12, thereby preventing the opening of the film bag 2 from being compressed and then heated and horizontally sealed. It is known that the heat insulation board 14 can also clamp the film bag 2 on the basis of heat insulation, that is, the end face of the heat insulation board 14 also has a serrated structure that matches the end face of the sealing and cutting mold 2 17. Furthermore, a heat insulation board 24 is provided between the middle piece 16 and the sealing and cutting mold 15. When the middle piece 16 is driven, the heat insulation board 2 24 moves synchronously. Thus, during the heat transverse sealing process, the film bag 2 below the cutter member 12 can be better prevented from being heat sealed by the arrangement of the heat insulation board 1 14 and the heat insulation board 2 24 .

[0065] like Figure 6As shown, further, the driving mechanism includes a power piece 18, which is movably connected to the middle piece 16 and connected to the cutter member 12; the sealing and cutting mechanism 1 also includes an elastic member 19, which is connected between the middle piece 16 and the power piece 18. The driving mechanism also includes a gear 20 and a power piece 21; the sealing and cutting mechanism 2 has a groove 22 that docks with the isolation belt. The power piece 18 and the power piece 21 have racks that mesh with the gear 20, and the racks of the two are arranged rotationally symmetrically with respect to the center of the gear 20. Therefore, when the gear 20 rotates, the power piece 18 and the power piece 21 can achieve synchronous movement toward or away from each other. The power piece 18 and the middle piece 16 are connected by a slide bar 23. Specifically, one end of the slide bar 23 is fixedly connected to the power piece 18, and the other end of the slide bar 23 is slidably connected to the middle piece 16. An elastic member 19 is sleeved on the outer side of the slide bar 23, and the elastic member 19 is located between the power piece 18 and the middle piece 16. Therefore, when the gear 20 rotates to make the sealing and cutting mold 15 and the sealing and cutting mold 2 17 collide with each other, the isolation belt and the groove 22 are connected to form a movement path of the cutter member 12. That is to say, the gear 20 can continue to rotate. When the one 15 and the sealing and cutting mold two 17 collide with each other, the cutter component 12 continues to move, transitioning from the isolation zone to the groove 22, thereby cutting the film bag 2 in the groove 22. At this time, it can be ensured that the cutter component 12 can cut the film bag 2. After the gear 20 stops rotating, the elastic component 19 that has been compressed and deformed recovers its deformation, so that the power member one 18 moves opposite to the power member two 21, thereby carrying the cutter component 12 backward. Therefore, on the basis of ensuring the cutting of the film bag 2, the cutter component 12 can return to its starting point, thereby avoiding the movement path of the film bag 2 and ensuring the continuity of bag making.

[0066] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A bag making assembly for a material dispensing device, characterized in that: include: A film placing rack, the film placing rack is used to roll up the film bags that have been vertically sealed; A molding unit, the molding unit is used to receive the film bag output from the film placing rack; Film pulling unit, used to pull the film bag to move; as well as The cross-cutting unit is used for heat-cross-sealing and cutting the film bag, and the cross-cutting unit is arranged on the upper side of the forming unit.

2. A bag making assembly for material dispensing equipment as claimed in claim 1, characterized in that: The molding unit comprises: A fixed or free-standing mandrel; and A fixed former, wherein a forming space is provided between the former and the core rod, and is used for allowing the film bag to pass through the forming space in an open state; When the mandrel is in a free state, the molding unit further comprises: The limiting mechanism is used to limit the vertical movement of the core rod.

3. A bag making assembly for material dispensing equipment as claimed in claim 2, characterized in that: The limiting mechanism comprises: A supporting roller, the supporting roller being located at one end of the mandrel for bagging to limit the downward displacement of the mandrel; and The limiting rollers are arranged on two opposite sides of the mandrel and are used to limit the lateral displacement of the mandrel.

4. A bag making assembly for material dispensing equipment as claimed in claim 2, characterized in that: The core rod is provided with at least one bag stretching member along its axial direction for keeping the film bag open.

5. A bag making assembly for material dispensing equipment as claimed in claim 4, characterized in that: The stretching bag part is in short contact with the film bag.

6. A bag making assembly for material dispensing equipment as claimed in claim 4, characterized in that: A central groove is arranged at one end of the mandrel for bag entry, wherein one of the bag stretching parts is configured as a mandrel roller and is arranged in the central groove. In the direction perpendicular to the axis of the mandrel, the outer circumference of the mandrel roller protrudes from the outside of the mandrel.

7. A bag making assembly for material dispensing equipment as claimed in claim 2, characterized in that: One end of the core rod used for bag entry is provided with a bag opening structure for opening the film bag.

8. A bag making assembly for material dispensing equipment as claimed in claim 2, characterized in that: The end of the core rod used for discharging the bag is provided with a second bag stretching member.

9. A bag making assembly for material dispensing equipment as claimed in claim 1, characterized in that: The cross-cutting unit comprises: A sealing and cutting mechanism 1 and a sealing and cutting mechanism 2 which can move toward and away from each other, wherein at least one of the sealing and cutting mechanisms has a heating element; A driving mechanism, used for driving at least one of the sealing and cutting mechanism 1 and the sealing and cutting mechanism 2 to move; and A cutter component is connected to the sealing and cutting mechanism one or the sealing and cutting mechanism two and is used for cutting the film bag.

10. A bag making assembly for material dispensing equipment as claimed in claim 9, characterized in that: The sealing and cutting mechanism 1 comprises: Thermal insulation board 1; and A sealing and cutting mold 1, wherein the sealing and cutting mold 1 and the heat insulation plate 1 are connected via an intermediate piece so as to move synchronously relative to the sealing and cutting mechanism 2; Wherein, the heating element is arranged on the sealing and cutting mold 1, and in the axial direction of the core rod, the sealing and cutting mold 1 is located on the upper side of the heat insulation plate 1, and an isolation zone is provided between the two; The cutter component is connected to the sealing and cutting mechanism, and the cutter of the cutter component is arranged in the isolation belt.

11. A bag making assembly for material dispensing equipment as claimed in claim 10, characterized in that: A heat insulation board 2 is arranged between the middle piece and the sealing and cutting mold 1.

12. A bag making assembly for material dispensing equipment as claimed in claim 10, characterized in that: The driving mechanism comprises a power member 1, the power member 1 is movably connected to the intermediate member and connected to the cutter member; The sealing and cutting mechanism 1 also includes an elastic component, which is connected between the middle piece and the power piece 1; wherein the power piece 1 and the middle piece are slidably connected; and the sealing and cutting mechanism 2 has a groove portion that docks with the isolation belt.

Images