A solid stick pack bag slitting device capable of cutting out a tear seam

Abstract

This invention discloses a solid strip bag slitting device capable of cutting easy-tear seams, relating to the field of packaging equipment technology. It includes a mounting base, on which a strip bag cutting component and an easy-tear seam cutting component are mounted. The strip bag cutting component includes a concave mold groove and a convex mold blade arranged opposite each other. Below the strip bag cutting component is the easy-tear seam cutting component, which includes a cutter and a cutter groove arranged opposite each other, and a reciprocatingly movable seat. The cutter or cutter groove is mounted on the movable seat. During mold closing, the cutter or cutter groove contacts the convex mold blade before the concave mold groove. This solid strip bag slitting device capable of cutting easy-tear seams has the advantages of long service life and easy maintenance.

Description

Technical Field

[0001] This invention belongs to the field of packaging equipment technology, and in particular relates to a solid strip bag cutting device capable of cutting easy-tear seams. Background Technology

[0002] In packaging equipment that uses strip packaging bags, the strip packaging bags are usually formed from continuous roll film. After the strip bags are formed, they are longitudinally sealed, filled and transversely sealed to form continuous strip bag products. Then, they need to be cut one by one by a cutting mold to form independent strip bag products.

[0003] In existing technology, cutting an easy-tear opening on a strip bag involves pressing the area where the easy-tear opening is to be cut onto the opposite pressure plate. Since the strip bag is made of composite aluminum foil material, long-term use can easily cause wear on the sharp edge and damage to the pressure plate, making it impossible to guarantee stability and service life for a long time. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a solid strip bag cutting device with long service life, easy maintenance and capable of cutting easy-tear seams.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A solid strip bag slitting device capable of cutting easy-tear seams includes a mounting base, on which a strip bag cutting component and an easy-tear seam cutting component are provided. The strip bag cutting component includes a concave mold groove 3 and a convex mold blade 5 arranged opposite to each other. The easy-tear seam cutting component is provided below the strip bag cutting component. The easy-tear seam cutting component includes a cutter 4 and a cutter groove 9 arranged opposite to each other, as well as a reciprocating movable seat 7. The cutter 4 or the cutter groove 9 is disposed on the movable seat 7. When the mold is closed, the cutter 4 and the cutter groove 9 contact the convex mold blade 5 before the concave mold groove 3. It has a long service life and is easy to maintain.

[0007] As a further improvement to the above technical solution:

[0008] The mounting base includes a first mounting base 1 and a second mounting base 2 arranged opposite to each other. A movable base 7 is connected to the second mounting base 2 via a guide shaft 6. An elastic element 8 is sleeved on the guide shaft 6, which causes the movable base 7 to reciprocate on the guide shaft 6. The first mounting base 1 is provided with a die groove 3 and a cutter 4. The second mounting base 2 is provided with a punch 5 and the movable base 7. The second mounting base 2 is connected to the movable base 7 via the guide shaft 6. The elastic element 8 is disposed between the movable base 7 and the second mounting base 2. The movable base 7 is provided with a cutter groove 9 for matching the cutter 4. The elastic element 8 limits the distance the movable base 7 moves to ensure that the cutter 4 cuts into the cutter groove 9 to a consistent depth, thus avoiding damage to the strip bag 16.

[0009] The mounting base includes a first mounting base 1 and a second mounting base 2 arranged opposite to each other. A movable base 7 is connected to the second mounting base 2 via a guide shaft 6. An elastic element 8 is sleeved on the guide shaft 6, and the elastic element 8 causes the movable base 7 to reciprocate on the guide shaft 6. The mounting base includes a first mounting base 1 and a second mounting base 2 arranged opposite to each other. The first mounting base 1 is provided with a die groove 3 and a cutter groove 9. The second mounting base 2 is provided with a punch blade 5 and a movable base 7. The second mounting base 2 is connected to the movable base 7 via the guide shaft 6. The elastic element 8 is disposed between the movable base 7 and the second mounting base 2. The movable base 7 is provided with a cutter 4 for matching the cutter groove 9. The elastic element 8 limits the distance the movable base 7 moves to ensure that the cutter 4 cuts into the cutter groove 9 to a consistent depth, thus avoiding damage to the strip bag 16.

[0010] The cutter 4 is embedded in the cutter mounting groove 10 and fixed by a locking device, making it easy to install and remove the cutter 4.

[0011] The cutter 4 includes an inclined blade 11, which is fitted with a cutter groove 9 to facilitate cutting an easy-tear seam 15.

[0012] The second mounting base is provided with a punch 12, the punch blade 5 is provided on the punch 12, and guide seats 13 are provided on both sides of the punch 12. The first mounting base 1 is provided with a guide hole 14 for the guide seat 13 to pass through, so as to achieve stable cutting.

[0013] The movable seat 7 is provided with a limiting part 17 at one end near the first mounting seat 1. The limiting part 17 is located below the cutter groove 9. The limiting part 17 limits the depth of the cutter 4 cutting into the strip bag 16 to avoid damaging the strip bag 16.

[0014] The first mounting base 1, near the end of the second mounting base 2, has a convex surface in the middle that slopes to both sides to guide the strip bag 16 and ensure the bag cutting effect.

[0015] Before mold closing, the cutting edge 11 of the cutter 4 is higher than the punch edge 5 or the cutting edge 11 of the cutter 4 is higher than the entrance of the die groove 3 to ensure that the easy tear seam 15 is cut out first, and then the strip bag 16 is cut off.

[0016] Multiple second mounting seats 2 are connected to mounting plates 18, and multiple first mounting seats 1 corresponding to the second mounting seats 2 are connected to fixed seats 19. The mounting plates 2 are connected to guide shafts 20 at both ends. The guide shafts 20 are connected to drive shafts 22 through eccentric rocker arms 21. The drive shafts 22 are connected to first synchronous pulleys 23. The first synchronous belts 23 are connected to second synchronous pulleys 25 through synchronous belts 24. The second synchronous pulleys 25 are connected to drive motors 26, so that the first mounting seats 1 and the second mounting seats 2 can move relative to each other to cut the tear seam 15 of the strip bag 16 and cut the strip bag, which is convenient for spatial layout.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] This invention discloses a solid strip bag slitting device capable of cutting an easy-tear seam. The device cuts the strip bag 16 using a concave mold groove 3 and a convex mold blade 5, and cuts the strip bag 16 with an easy-tear seam 15 using a cutter 4 and a cutter groove 9. Since the easy-tear seam 15 is a single slit, and slitting the strip bag 16 involves cutting away the portion of the horizontally sealed roll film between two consecutive strip bags 16, the cutter 4 is thinner than the convex mold blade 5. The cutting edge of the cutter 4 that cuts into the strip bag 16 is typically 0.2 to 0.3 mm thick, while the portion of the convex mold blade 5 that extends into the concave mold groove 3 is typically 5 to 8 mm thick. Therefore, the cutter 4 is more prone to damage than the convex mold blade 5. By separating the strip bag cutting component and the easy-tear seam cutting component, it is convenient to continue using the original convex mold blade 5 after replacing the cutter 4, thus extending the service life of the strip bag cutting component.

[0019] When the cutter 4 and the cutter groove 9 work together to cut the easy-tear seam 15 of the strip bag 16, the easy-tear seam 15 is cut through the shearing action between the cutter 4 and the cutter groove 9. Compared with cutting the easy-tear seam through the punching action, the cutter 4 is less prone to damage and has a longer service life.

[0020] The easy-tear seam 15 is cut into the strip bag 16, which not only meets the user's need for easy tearing of the bag 16, but also reduces the damage to the shape and pattern of the strip bag 16 compared to the easy-tear opening, thus ensuring the aesthetics of the strip bag 16 while being practical.

[0021] For solid strip bags 16, the powder and granules filled into the strip bags 16 have insufficient flowability. To ensure filling volume and heat sealing effect, solid strip bags 16 adopt forward filling. By setting a reciprocating movable seat 7, when the mold is closed, the cutter 4 and the cutter groove 9 contact the die groove 3 and the punch 5 first. This ensures that the cutter cutting the easy tear slit 15 contacts the continuous strip bag 16 products first to cut the easy tear slit 15 before the punch cuts the strip bag 16. This is suitable for the filling direction requirements of solid strip bags 16. When the cutter 4 and the cutter groove 9 cooperate to cut the easy tear slit 15 of the strip bag 16, the movable seat 7 moves to the side closer to the strip bag 16 to ensure that the depth of the cutter is consistent and to prevent the cutter from not being able to cut into the packaging material. When the die groove 3 contacts the punch 5 to cut, the movable seat 7 moves to the side away from the strip bag 16 to avoid the cutter cutting into the strip bag 16 too deeply and damaging the strip bag 16. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of a solid strip bag cutting device capable of cutting easy-tear seams, as described in Embodiment 1.

[0023] Figure 2 This is a perspective view of a solid strip bag cutting device capable of cutting easy-tear seams, as described in Embodiment 1.

[0024] Figure 3 for Figure 1 A schematic diagram of a partial structure;

[0025] Figure 4 This is a cross-sectional view of a solid strip bag cutting device capable of cutting easy-tear seams, as described in Embodiment 2.

[0026] Figure 5 This is a top view of a solid strip bag cutting device capable of cutting easy-tear seams, as described in Example 2.

[0027] Figure 6 This is a schematic diagram of the structure of the cutter of the present invention;

[0028] Figure 7 This is a schematic diagram of the drive mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the solid strip bag cut out by the present invention.

[0030] The reference numerals in the accompanying drawings of this invention are explained as follows: 1. First mounting base; 2. Second mounting base; 3. Die groove; 4. Cutting blade; 5. Punch blade; 6. Guide shaft; 7. Movable seat; 8. Elastic element; 9. Cutting blade groove; 10. Cutting blade mounting groove; 11. Blade; 12. Punch; 13. Guide seat; 14. Guide hole; 15. Easy-tear seam; 16. Strip bag; 17. Limiting part; 18. Mounting plate; 19. Fixed seat; 20. Guide shaft; 21. Eccentric rocker arm; 22. Transmission shaft; 23. First synchronous pulley; 24. Synchronous belt; 25. Second synchronous pulley; 26. Drive motor. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] like Figures 1 to 3As shown, a solid strip bag slitting device capable of cutting easy-tear seams includes a mounting base. The mounting base is equipped with a strip bag cutting component and an easy-tear seam cutting component. The strip bag cutting component includes a concave mold groove 3 and a convex mold blade 5 arranged opposite to each other. Below the strip bag cutting component is the easy-tear seam cutting component, which includes a cutter 4 and a cutter groove 9 arranged opposite to each other, and a reciprocating movable seat 7. The mounting base includes a first mounting base 1 and a second mounting base 2 arranged opposite to each other. The movable seat 7 is connected to the second mounting base 2 via a guide shaft 6. An elastic element 8 is sleeved on the guide shaft 6, causing the movable seat 7 to reciprocate on the guide shaft 6. The first mounting base 1 is equipped with a concave mold groove 3 and a cutter 4. The second mounting base 2 is provided with a punch blade 5 and a movable seat 7. The second mounting base 2 is connected to the movable seat 7 through a guide shaft 6. An elastic element 8 is provided between the movable seat 7 and the second mounting base 2. The movable seat 7 is provided with a cutter groove 9 for matching the cutter 4. The cutter 4 is embedded in the cutter mounting groove 10 and fixed by a locking element. The locking element fixes the embedded cutter, making it easy to install and remove the cutter 4. The second mounting base is provided with a punch 12, and the punch blade 5 is provided on the punch 12. Guide seats 13 are provided on both sides of the punch 12. The first mounting base 1 is provided with a guide hole 14 for the guide seat 13 to pass through. The guide seat 13 and the guide hole 14 cooperate to guide the mold closing process and achieve stable mold closing.

[0034] like Figure 3 As shown, before mold closing, the axis where the cutting edge of the cutter 11 is located is L1, and the axis where the entrance of the cavity groove is located is L2. Relative to the first mounting base 1, the cutting edge 11 of the cutter 4 is higher than the entrance of the cavity groove 3. When the mold is closed, the first mounting base 1 and the second mounting base 2 move relative to each other. The cutter 4 and the cutting groove 9 contact the punch blade 5 before the cavity groove 3, ensuring that the easy tear seam 15 is cut out first, and then the strip bag 16 is cut.

[0035] like Figure 7 As shown, multiple second mounting seats 2 are connected to mounting plates 18, and multiple first mounting seats 1 corresponding to the second mounting seats 2 are connected to fixed seats 19. The mounting plates 2 are connected to guide shafts 20 at both ends. The guide shafts 20 are connected to drive shafts 22 through eccentric rocker arms 21. The drive shafts 22 are connected to first synchronous pulleys 23. The first synchronous belt 23 is connected to second synchronous pulleys 25 through synchronous belts 24. The second synchronous pulleys 25 are connected to drive motors 26. Drive motors 26 drive the first mounting seats 1 and the second mounting seats 2 to move relative to each other. By setting strip bag cutting components and easy-tear seam cutting components on the mounting seats, the strip bag cutting process and easy-tear seam cutting process can be completed by only one drive motor 26, reducing the cost of the drive mechanism. The structure is compact and convenient for space layout.

[0036] like Figure 6As shown, the cutter 4 includes an inclined blade 11. The inclined blade 11 gradually contacts the bag 16 from point to line to ensure the cutting effect. The blade 11 is fitted with the upper surface of the cutting groove 9 with a clearance, and cuts an easy-tear seam 15 through shearing action to reduce the wear on the blade 11.

[0037] The movable seat 7 is provided with a limiting part 17 at one end near the first mounting seat 1. The limiting part 17 is located below the cutter groove 9. The limiting part 17 limits the depth of the cutter 4 cutting into the strip bag 16 to avoid damaging the strip bag 16.

[0038] The first mounting base 1 has a convex middle section and an inclined surface that slopes to both sides to guide the strip bag 16. The punch blade 5 gradually contacts the strip bag 16, which is bent as it passes through the inclined surface, from point to line, to ensure the cutting effect and avoid damage to the strip bag 16.

[0039] This invention discloses a solid strip bag slitting device capable of cutting an easy-tear seam. The device cuts the strip bag 16 using a concave mold groove 3 and a convex mold blade 5, and cuts the strip bag 16 with an easy-tear seam 15 using a cutter 4 and a cutter groove 9. Since the easy-tear seam 15 is a single slit, and slitting the strip bag 16 involves cutting away the portion of the horizontally sealed roll film between two consecutive strip bags 16, the cutter 4 is thinner than the convex mold blade 5. The cutting edge of the cutter 4 that cuts into the strip bag 16 is typically 0.2 to 0.3 mm thick, while the portion of the convex mold blade 5 that extends into the concave mold groove 3 is typically 5 to 8 mm thick. Therefore, the cutter 4 is more prone to damage than the convex mold blade 5. By separating the strip bag cutting component and the easy-tear seam cutting component, it is convenient to continue using the original convex mold blade 5 after replacing the cutter 4, thus extending the service life of the strip bag cutting component.

[0040] When the cutter 4 and the cutter groove 9 work together to cut the easy-tear seam 15 of the strip bag 16, the easy-tear seam 15 is cut through the shearing action between the cutter 4 and the cutter groove 9. Compared with cutting the easy-tear seam through the punching action, the cutter 4 is less prone to damage and has a longer service life.

[0041] like Figure 8 The strip bag shown has an easy-tear slit 15 cut into it, which satisfies the user's need for easy tearing of the bag. At the same time, compared with the easy-tear opening, the easy-tear slit 15 reduces the damage to the shape and pattern of the bag 16, thus ensuring the aesthetics of the bag 16 while being practical.

[0042] For solid strip bags 16, the powder and granules filled into the strip bags 16 have insufficient flowability. To ensure filling volume and heat sealing effect, solid strip bags 16 adopt forward filling, that is, filling along... Figure 8The process proceeds from top to bottom, first sealing vertically, then horizontally sealing the bottom port, followed by filling, then horizontally sealing the top port. Next, the continuous strip bags are first cut with easy-tear seams 15, then the strip bags 16 are separated. By setting a reciprocating movable seat 7, during mold closing, the cutter 4 and cutter groove 9 contact the punch blade 5 before the die groove 3, ensuring that the cutter cutting the easy-tear seams 15 contacts the continuous strip bag 16 first, cutting the easy-tear seams 15 before the punch blade proceeds to cut the strip bag 16. The cutting mechanism is suitable for the filling direction requirements of solid strip bags 16. When the cutter 4 and the cutter groove 9 cooperate to cut the easy-tear seam 15 of the strip bag 16, the movable seat 7 moves to the side closer to the strip bag 16 to ensure that the depth of the cutter is consistent and to prevent the cutter from failing to cut into the packaging material. When the concave mold groove 3 contacts the convex mold blade 5 to cut, the movable seat 7 moves to the side away from the strip bag 16 to avoid the cutter cutting into the strip bag 16 too deeply and damaging the strip bag 16.

[0043] The process of cutting the easy-tear seam and slitting the solid strip bag 16: The second mounting seat 2 moves relative to the first mounting seat 1, and one end of the limiting part 17 abuts against one side of the first mounting seat 1, limiting the depth of the cutter 4 entering the cutter groove 9. The elastic element 8 is a compression spring. The compression spring is in a pre-compression state, so that the movable seat 7 is not pushed by the cutter 4 to the side where the elastic element 8 is located (i.e., the side away from the packaging bag), ensuring that the cutter 4 can cut into the packaging bag. As the second mounting seat 2 continues to move relative to the first mounting seat 1, the punch 5 enters the die groove 3 to cut the strip bag. At this time, the compression spring is pushed by the limiting part 17 to continue to compress, and the movable seat 7 moves to the side where the elastic element 8 is located (i.e., the side away from the packaging bag), ensuring that the depth of the cutter 4 cutting into the packaging bag remains unchanged, effectively preventing the cutter 4 from damaging the packaging bag, and realizing the cutting of the easy-tear seam 15 first and then slitting the strip bag 16.

[0044] Example 2:

[0045] like Figures 4 to 5 As shown, this embodiment is basically the same as embodiment 1, except that the first mounting base 1 is provided with a die groove 3 and a cutter groove 9, the second mounting base 2 is provided with a punch blade 5 and a movable base 7, and the movable base 7 is provided with a cutter 4 for matching the cutter groove 9. Before the mold is closed, the blade 11 of the cutter 4 is higher than the punch blade 5. This embodiment also has the advantages of embodiment 1.

[0046] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A solid strip bag cutting device capable of cutting easy-tear seams, characterized in that, The system includes a mounting base, on which a strip bag cutting assembly and an easy-tear seam cutting assembly are provided. The strip bag cutting assembly includes a concave mold groove (3) and a convex mold blade (5) arranged opposite to each other. Below the strip bag cutting assembly is an easy-tear seam cutting assembly, which includes a cutter (4) and a cutter groove (9) arranged opposite to each other, and a reciprocating movable seat (7). The cutter (4) is disposed on the movable seat (7). The mounting base includes a first mounting base (1) and a second mounting base (2) arranged opposite to each other. The first mounting base (1) is provided with a concave mold groove (3) and a cutter groove (9). The second mounting base (2) is provided with a convex mold blade (5) and a movable seat (7). The second mounting base (2) is connected to the movable seat (7) through a guide shaft (6). An elastic element (8) is disposed between the movable seat (7) and the second mounting base (2). The movable seat (7) is connected to the second mounting seat (2) via the guide shaft (6). An elastic element (8) is sleeved on the guide shaft (6). The elastic element (8) causes the movable seat (7) to reciprocate on the guide shaft (6). The movable seat (7) is provided with a cutter (4) for matching the cutter groove (9). When the mold is closed, the cutter (4) and the cutter groove (9) contact the punch blade (5) before the die groove (3). The movable seat (7) is provided with a limiting part (17) at one end near the first mounting seat (1). The limiting part (17) is located below the cutter groove (9). Multiple second mounting seats (2) are connected to the mounting plate (18). Multiple first mounting seats (1) corresponding to the second mounting seats (2) are connected to the fixed seat (19). The two ends of the mounting plate (18) are connected to the guide shaft (20). The guide shaft (20) is connected to the drive motor (26).

2. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, The cutter (4) is embedded in the cutter mounting groove (10) and fixed by a locking member.

3. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, The cutter (4) includes an inclined blade (11) that is in clearance fit with the cutter groove (9).

4. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, The second mounting base is provided with a punch (12), the punch blade (5) is provided on the punch (12), and guide seats (13) are provided on both sides of the punch (12). The first mounting base (1) is provided with a guide hole (14) for the guide seat (13) to pass through.

5. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, The first mounting base (1) has a central protrusion and an inclined surface that slopes to both sides at one end near the second mounting base (2).

6. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, Before mold closing, the cutting edge (11) of the cutter (4) is higher than the punch edge (5).

7. The solid strip bag cutting device capable of cutting easy-tear seams as described in claim 1, characterized in that, The guide shaft (20) is connected to the transmission shaft (22) via the eccentric rocker arm (21). The transmission shaft (22) is connected to the first synchronous pulley (23). The first synchronous pulley (23) is connected to the second synchronous pulley (25) via the synchronous belt (24). The second synchronous pulley (25) is connected to the drive motor (26).

Images