A detachable longitudinal sealing base for a bag in a strip

Abstract

This utility model discloses a detachable longitudinal sealing base for strip packaging bags, including a fixed longitudinal sealing base and a movable longitudinal sealing base. The fixed longitudinal sealing base has an inwardly accommodating recess on its front side, with several locking parts protruding from the edge of the recess, arranged diagonally. The movable longitudinal sealing base has locking blocks on its side. The movable longitudinal sealing base is inserted into the recess, and then slid downwards to engage the locking blocks with the locking parts. Simultaneously, the side of the movable longitudinal sealing base fits against the inner side of the recess. Compared to existing technologies, this device divides the longitudinal sealer into two parts, using the upper and lower locking method of the locking parts and locking blocks to achieve quick-release functionality. Furthermore, it eliminates the need for repeated positioning after disassembly and assembly, significantly reducing downtime and production costs.

Description

Technical Field

[0001] This utility model relates to the technical field of multi-row packaging equipment, and in particular to a detachable longitudinal sealing base for strip packaging bags. Background Technology

[0002] The longitudinal sealing (or back sealing) device is the core unit of a multi-row packaging machine. Its function is to roll the flat packaging film into a cylindrical shape under the guidance of the forming device, and continuously heat-seal the longitudinal overlap of the film to form a sealed strip-shaped packaging bag, preparing for subsequent material filling and transverse sealing and cutting. The performance of this device directly determines the back seal strength and appearance quality of the packaging bag.

[0003] Currently, the longitudinal sealing devices commonly used in multi-row packaging machines typically employ an integrated or integrally welded frame structure for their longitudinal sealing base. This design aims to ensure the overall rigidity, stability, and centering accuracy of the device, meeting basic requirements in continuous packaging operations for conventional materials.

[0004] However, when this device is applied to packaging scenarios for powdered materials such as milk powder, flavoring powder, and additives, the existing structure, characterized by an integral, non-removable, or extremely difficult-to-remove base, exposes significant practical problems, specifically in the following two closely related aspects:

[0005] 1. Powdered materials easily generate dust during high-speed filling, with fine particles scattering and gradually accumulating inside and around the working area of ​​the longitudinal sealing device. This is especially true in the various mechanical gaps above the base, the guide film channels, and hidden corners near the sealing mechanism. This powder accumulation can not only contaminate packaging materials and affect sealing cleanliness, but long-term accumulation can also interfere with the flexibility of mechanical moving parts, and even pose hygiene or safety hazards due to the characteristics of the dust. Since the base is a non-removable unit, thoroughly cleaning these areas usually requires disassembling a large number of peripheral parts connected to the base, a cumbersome and time-consuming process. This often forces users to reduce the frequency of cleaning or only perform incomplete surface cleaning, making it difficult to meet the stringent hygiene requirements of industries such as food and pharmaceuticals. Frequent or prolonged downtime for cleaning also seriously affects production efficiency.

[0006] 2. The inefficiency in handling "powder trapped in the film side" faults is a significant issue. During the film forming and bonding process, loose powder particles can easily become trapped between the sides of the two layers of film to be sealed, causing a momentary inability to seal properly, resulting in incomplete sealing or defects. Immediate machine shutdown is necessary to resolve this. However, due to the structural limitations of the integrated base, operators cannot quickly and directly access and clean the precise location of the trapped powder. The usual approach still requires loosening or disassembling the components fixed to the base, a complex and slow process. This means that even handling a simple powder trapping fault requires a considerable downtime, and frequent disassembly operations may affect the original positioning accuracy of the components of the longitudinal sealing device, eventually compromising the stability of the sealing quality.

[0007] Existing longitudinal sealing devices, with their integrated, non-removable or difficult-to-remove bases, are no longer adequate for the high-frequency, convenient cleaning and maintenance requirements of powder packaging. Furthermore, they exhibit slow response and low efficiency when dealing with common powder-clamping issues on the film side. This has become a significant technical bottleneck in improving the efficiency of multi-row packaging machines in the powder industry and ensuring packaging quality and production hygiene. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a detachable vertical sealing base for strip packaging bags.

[0009] To achieve the above objectives, this utility model discloses a detachable longitudinal sealing base for strip packaging bags, including a longitudinal sealing fixed base and a longitudinal sealing movable base. The front side of the longitudinal sealing fixed base is provided with an inwardly accommodating recess, and the edge of the accommodating recess is provided with a plurality of snap-fit ​​parts, which are arranged diagonally. The side of the longitudinal sealing movable base is provided with a snap-fit ​​block. The longitudinal sealing movable base is inserted into the accommodating recess, and the longitudinal sealing movable base is slid downward so that the snap-fit ​​block and the snap-fit ​​part are engaged vertically. At the same time, the side of the longitudinal sealing movable base is in contact with the inner side of the accommodating recess.

[0010] Meanwhile, a receiving channel is formed between the surface of the receiving recess and the back of the longitudinal sealing seat, and the receiving channel is used to insert an unformed strip bag.

[0011] Furthermore, the longitudinal sealing fixing seat has several first connecting positions on both sides, which extend through to the receiving recess. The snap-fit ​​part protrudes from the first connecting position, and the bottom of the snap-fit ​​part forms a clearance position with the bottom of the first connecting position.

[0012] Furthermore, the longitudinal sealing movable seat has several second connecting positions on both sides facing inward. The second connecting positions are used to accommodate the snap-fit ​​part. The snap-fit ​​block is fixedly disposed at the top of the second connecting position. The longitudinal sealing movable seat is slid upward so that the bottom of the second connecting position contacts the bottom of the snap-fit ​​part, thereby separating the snap-fit ​​block from the snap-fit ​​part to remove the longitudinal sealing movable seat.

[0013] Furthermore, the number of the first connection bits is four, and the four first connection bits are arranged diagonally. The number of the second connection bits corresponds to the number of the first connection bits.

[0014] Furthermore, the length of the accommodating recess corresponds to the length of the longitudinal sealing seat.

[0015] Furthermore, a first recess is provided inwardly on the surface of the receiving recess, which communicates with the top and bottom of the longitudinal sealing fixing seat. A second recess is provided on the back of the longitudinal sealing movable seat, which communicates with the top and bottom of the longitudinal sealing movable seat. The receiving channel is formed by the movement between the first recess and the second recess.

[0016] The front side of the longitudinal sealing movable seat is provided with a membrane clamping groove, which communicates with the second recess and the top and bottom of the longitudinal sealing movable seat.

[0017] Furthermore, the outer contours of the first and second recesses are semi-circular, and their diameters correspond to each other.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This device divides the longitudinal sealer into two parts and adopts the upper and lower snap-fit ​​method of the snap-fit ​​position and the snap-fit ​​block to achieve the quick-release function. Moreover, there is no need to reposition after disassembly and assembly, which greatly shortens downtime and production costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this embodiment;

[0020] Figure 2 This is a three-dimensional schematic diagram of the longitudinal sealing fixing seat in this embodiment;

[0021] Figure 3 This is a schematic diagram of the longitudinal sealing movable seat not engaging with the longitudinal sealing fixed seat in this embodiment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will be combined with... Figures 1-3 The accompanying drawings provide a further detailed description of this utility model.

[0023] Reference Figure 1 As shown, a detachable longitudinal sealing base for strip-shaped packaging bags includes a longitudinal sealing fixed base 1 and a longitudinal sealing movable base 2. The longitudinal sealing fixed base 1 is fixedly connected to the frame (not shown) of a multi-row packaging machine by bolts (not shown in the figure). The longitudinal sealing movable base 2 is slidably engaged with the front side of the longitudinal sealing fixed base 1, and a receiving channel 3 is formed between the longitudinal sealing movable base 2 and the longitudinal sealing fixed base 1. In this embodiment, the receiving channel 3 is circular to accommodate unformed strip-shaped bags.

[0024] Combined Figure 2 As shown, the front side of the longitudinal sealing fixing seat 1 is provided with an inwardly accommodating recess 11, which communicates with the top and bottom of the longitudinal sealing fixing seat 1. Furthermore, the length of the accommodating recess 11 corresponds to the length of the longitudinal sealing movable seat 2. In use, the longitudinal sealing movable seat 2 slides up and down within the accommodating recess 11.

[0025] The longitudinal sealing fixing seat 1 has a plurality of first connecting positions 12 arranged inward on both sides. In this embodiment, the number of first connecting positions 12 is four. Specifically, the upper half and lower half of any side of the longitudinal sealing fixing seat 1 are respectively provided with first connecting positions 12. Furthermore, the first connecting positions 12 located on the left and right sides of the longitudinal sealing fixing seat 1 are respectively symmetrically arranged and penetrate into the surface of the receiving recess 11.

[0026] A latching part 13 protrudes from the first connecting position 12, and a latching position 131 is provided on the top of the latching part 13 facing downward, which communicates with the receiving recess 11. A clearance position 14 is formed between the bottom of the latching part 13 and the bottom of the first connecting position 12.

[0027] The longitudinal sealing movable seat 2 has a plurality of second connecting positions 21 on both sides. In this embodiment, the number of second connecting positions 21 corresponds to the number of first connecting positions 12. Specifically, the second connecting positions 21 are formed inwardly on the side of the longitudinal sealing movable seat 2.

[0028] A snap-fit ​​block 22 is provided at the top of the second connecting position 21, pointing downwards. Specifically, the length between the two second connecting positions 21 on the left and right sides of the longitudinal sealing movable seat 2 is equal to the distance between the two snap-fit ​​parts 13 on the left and right sides of the longitudinal sealing fixed seat 1.

[0029] When installing and using, the longitudinal sealing movable seat 2 is embedded into the receiving recess 11. At this time, the side wall inside the second connecting position 21 is in contact with the inner side of the snap-fit ​​part 13, and the two sides inside the receiving recess 11 are in contact with the left and right sides of the longitudinal sealing movable seat 2 to prevent it from moving horizontally left and right.

[0030] Subsequently, slide the longitudinal sealing movable seat 2 downward to make the snap-fit ​​block 22 snap into the snap-fit ​​position 131, so that the longitudinal sealing movable seat 2 and the longitudinal sealing fixed seat 1 are connected to each other. After the connection, the longitudinal sealing fixed seat 1 and the longitudinal sealing movable seat 2 are flush with each other. At this time, the top of the snap-fit ​​part 13 abuts against the top of the second connection position 21.

[0031] Combined Figure 3 As shown, when disassembling and assembling, pull the longitudinal sealing movable seat 2 upward so that the bottom of the second connecting position 21 contacts the top of the clearance position 14. At this time, the locking part 13 and the locking position 131 are disengaged vertically. Then, the longitudinal sealing movable seat 2 is taken out longitudinally.

[0032] Reference Figure 1 and Figure 2 As shown, a first recess 15 is provided inwardly on the surface of the accommodating recess 11, and the first recess 15 communicates with the top and bottom of the longitudinal sealing fixing seat 1. A second recess 23 is provided on the back of the longitudinal sealing movable seat 2, and the second recess 23 communicates with the top and bottom of the longitudinal sealing movable seat 2. The outer contours of the first recess 15 and the second recess 23 are semi-circular, and their diameters correspond to each other.

[0033] When the longitudinal sealing movable seat 2 is engaged with the front side of the longitudinal sealing fixed seat 1, the first recess 15 and the second recess 23 move to form the aforementioned receiving channel 3.

[0034] Furthermore, the top edges of the first recess 15 and the second recess 23 have arc-shaped chamfers to serve as a guide for the film and to prevent scratching the film.

[0035] Furthermore, the front side of the longitudinal sealing movable seat 2 is provided with a membrane clamping groove 24, which is connected to the second recess 23 and the top and bottom of the longitudinal sealing movable seat 2.

[0036] When in use, the body of the semi-formed strip bag is placed in the receiving channel 3, and its two sides are inserted into the film clamping groove 24.

[0037] This embodiment addresses the frequent cleaning requirements of powder material packaging by dividing the longitudinal sealer into two parts and using a snap-fit ​​method between the snap-fit ​​position and the snap-fit ​​block to achieve quick disassembly. Furthermore, it eliminates the need for repeated positioning after disassembly and assembly, greatly reducing downtime and production costs.

[0038] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They cannot be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A detachable longitudinal sealing base for strip-shaped packaging bags, characterized in that, The system includes a longitudinal sealing fixed seat (1) and a longitudinal sealing movable seat (2). The front side of the longitudinal sealing fixed seat (1) is provided with a receiving recess (11), and the edge of the receiving recess (11) is provided with a snap-fit ​​part (13). The side of the longitudinal sealing movable seat (2) is provided with a snap-fit ​​block (22). The longitudinal sealing movable seat (2) is embedded into the receiving recess (11), and the longitudinal sealing movable seat (2) is slid down so that the snap-fit ​​block (22) and the snap-fit ​​part (13) are snapped together. At the same time, the side of the longitudinal sealing movable seat (2) is in contact with the inner side of the receiving recess (11). Meanwhile, a receiving channel (3) is formed between the surface of the receiving recess (11) and the back of the longitudinal sealing seat (2), and the receiving channel (3) is used to insert an unformed strip bag.

2. The detachable longitudinal sealing base for strip packaging bags according to claim 1, characterized in that, The longitudinal sealing base (1) has several first connecting positions (12) on both sides, which extend into the receiving recess (11). The snap-fit ​​part (13) protrudes from the first connecting position (12).

3. The detachable longitudinal sealing base for strip packaging bags according to claim 2, characterized in that, The longitudinal sealing movable seat (2) has several second connecting positions (21) arranged inward on both sides. The second connecting positions (21) are used to accommodate the snap-fit ​​part (13). The snap-fit ​​block (22) is fixedly arranged at the top of the second connecting position (21). The bottom of the snap-fit ​​part (13) and the bottom of the first connecting position (12) form a clearance position (14). The longitudinal sealing movable seat (2) is slid upward so that the bottom of the second connecting position (21) contacts the top of the clearance position (14), thereby separating the snap-fit ​​block (22) from the snap-fit ​​part (13) to remove the longitudinal sealing movable seat (2).

4. The detachable longitudinal sealing base for strip packaging bags according to claim 3, characterized in that, The number of the first connection positions (12) is four, and the four first connection positions (12) are symmetrically arranged on the longitudinal sealing base (1). The number of the second connection positions (21) corresponds to the number of the first connection positions (12).

5. The detachable longitudinal sealing base for strip packaging bags according to claim 1, characterized in that, The length of the recess (11) corresponds to the length of the longitudinal sealing seat (2).

6. The detachable longitudinal sealing base for strip packaging bags according to claim 1, characterized in that, The inner surface of the receiving recess (11) is provided with a first recess (15), which is connected to the top and bottom of the longitudinal sealing fixed seat (1). The back of the longitudinal sealing movable seat (2) is provided with a second recess (23), which is connected to the top and bottom of the longitudinal sealing movable seat (2). The receiving channel (3) is formed by the movement between the first recess (15) and the second recess (23). The front side of the longitudinal sealing seat (2) is provided with a clamping groove (24), which is connected to the second recess (23) and the top and bottom of the longitudinal sealing seat (2).

7. The detachable longitudinal sealing base for strip packaging bags according to claim 6, characterized in that, The outer contours of the first recess (15) and the second recess (23) are semi-circular, and their diameters correspond to each other.

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