A folding and sewing device for alkali packaging line production.

Abstract

This application relates to a folding and sewing device for alkali packaging line production, including a frame, a mounting frame on the frame, and a conveyor belt located below the mounting frame. The mounting frame contains a folding positioning part and a sewing part. A guide channel for the packaging bag to enter is provided on the mounting frame. The folding positioning part includes an abutment plate and a positioning plate arranged opposite each other. The abutment plate is installed on one side of the guide channel, and the positioning plate is movably connected to the other side of the guide channel and driven by a control cylinder. The positioning plate pushes the folded edge of the packaging bag against the abutment plate; and the abutment plate and the positioning plate slide synchronously. This application utilizes the cooperation of the positioning plate and the abutment plate to achieve abutment positioning of the folded edge of the packaging bag. Simultaneously, when the abutment plate and the positioning plate clamp the packaging bag, as the conveyor belt moves synchronously, the abutment plate and the positioning plate transport the packaging bag to the sewing part. This reduces the situation where the folded edge is difficult to fix, leading to displacement of the folded edge position during sewing and resulting in an uneven sewing line.

Description

Technical Field

[0001] This application relates to the field of material packaging machinery technology, and in particular to a folding and sewing device for alkali material packaging line production. Background Technology

[0002] Currently, packaging lines for granular (with 20% powder in the granules), powder, and flake materials such as soda ash (sodium carbonate), caustic soda flakes (sodium hydroxide), trisodium phosphate, and sodium metasilicate require folding and sewing the packaging bags after filling.

[0003] The existing Chinese patent with publication number CN209535619U discloses a bag folding mechanism in a fully automatic packaging machine; it includes a front bottom plate, a rear bottom plate, and a folding mechanism; the lower part of the folding machine fixed plate is connected to the rear bottom plate by a support column, and the upper surface of the folding machine fixed plate is respectively provided with a flip-plate cylinder bracket and an opening cylinder, the flip-plate cylinder bracket is connected to the flip-plate through the flip-plate cylinder, and the bottom of the folding machine fixed plate is fixed with a connecting rod upper shaft; two sets of parallel connecting rods are vertically arranged on the front bottom plate through a connecting rod fixing block, and the middle of the outer pair of connecting rods is connected by a connecting rod connecting plate, the connecting rod connecting plate is connected to the opening cylinder through a cylinder connecting frame, and a connecting rod lower shaft is fixed on the front bottom plate, the shaft ends of the connecting rod lower shaft and the connecting rod upper shaft form a rotating joint with the connecting rod through a connecting rod bushing.

[0004] Regarding the aforementioned technologies, the applicant believes that currently, after the packaging bag is folded, it enters the sewing section for sewing and sealing. However, the folded edge of the packaging bag lacks fixation, which easily leads to the folded edge shifting during sewing, resulting in uneven seam lines. Therefore, there is still room for improvement. Utility Model Content

[0005] In order to reduce the problem of uneven seam lines caused by the difficulty in fixing the folded edge of the packaging bag and the resulting offset of the folded edge, this application provides a folding and sewing device for alkali material packaging line production.

[0006] The folding and sewing device for alkali material packaging line production provided in this application adopts the following technical solution: A folding and sewing device for alkali packaging line production includes a frame, a mounting frame and a conveyor belt located below the mounting frame. The mounting frame has a folding positioning part and a sewing part. The mounting frame has a guide channel for the packaging bag to enter. The folding positioning part includes an abutment plate and a positioning plate arranged opposite to each other. The abutment plate is installed on one side of the guide channel, and the positioning plate is movably connected to the other side of the guide channel and driven by a control cylinder. The positioning plate pushes the folded edge of the packaging bag to abut against the abutment plate; and the abutment plate and the positioning plate slide synchronously.

[0007] By adopting the above technical solution, the positioning plate and the abutment plate are used to achieve the abutment positioning of the folded edge of the packaging bag. At the same time, when the abutment plate and the positioning plate clamp the packaging bag, the abutment plate and the positioning plate slide synchronously with the conveyor belt, and the packaging bag is transported to the sewing part. This reduces the situation where the folded edge position is offset when sewing due to the difficulty in fixing the folded edge of the packaging bag, resulting in an uneven sewing line of the packaging bag.

[0008] Preferably, the abutment plate and the positioning plate are respectively connected to the mounting frame via a sliding structure; the sliding structure includes a sliding base and a support base, the support base is fixed on both sides of the guide channel, the sliding base is fixed on the bottom of the abutment plate and the positioning plate, and the control cylinder is fixed on the sliding base; a pulley is fixed on the bottom of the sliding base, and a groove for the pulley to slide is opened on the support base; the sliding base is reset by a reset assembly.

[0009] By adopting the above technical solution, the groove on the support base provides guidance for the rolling of the pulley of the sliding base, and the abutment plate and positioning plate can move synchronously with the movement of the packaging bag, so as to keep the folded edge of the packaging bag fixed and transport the packaging bag to the sewing part; the reset component realizes the reset of the sliding base, namely the abutment plate and positioning plate, to facilitate the transport of the next packaging bag.

[0010] Preferably, the two ends of the sliding base extend downward to form bent plates, and the supporting base has connecting grooves for the bent plates to slide.

[0011] By adopting the above technical solution, the cooperation between the bending plate and the connecting groove maintains the connection between the sliding base and the supporting base, and guides the stable sliding of the sliding base.

[0012] Preferably, the reset assembly includes a fixing cylinder and a push plate. The fixing cylinder is fixed on the mounting frame at the misalignment point with the sewing part, and the push plate is fixed to the output shaft of the fixing cylinder and can abut against the sliding base at the bottom of the abutment plate and the positioning plate.

[0013] By adopting the above technical solution, the fixed cylinder pushes the push plate to push the sliding base of the abutment plate and the positioning plate back to its original position, thus achieving convenient reset.

[0014] Preferably, the folding and positioning part further includes a leveling structure, which includes a main leveling belt and a secondary leveling belt installed on the guide channel and arranged opposite to each other. The main leveling belt and the secondary leveling belt respectively abut against both sides of the packaging bag. The two ends of the main leveling belt are provided with first rotating pulleys that drive the main leveling belt to rotate, and the two ends of the secondary leveling belt are provided with second rotating pulleys that support the rotation of the secondary leveling belt. The bottom of the first rotating pulley is equipped with a first synchronous pulley that is rotatably connected to the mounting frame. The first synchronous pulley is driven to rotate by the drive structure.

[0015] By adopting the above technical solution, the first rotating pulley drives the main leveling belt to rotate. The main leveling belt and the secondary leveling belt abut against both sides of the packaging bag and play a role in leveling and pressing the folded edge of the packaging bag, which facilitates the smooth progress of the sewing operation.

[0016] Preferably, the drive structure includes a second synchronous pulley, a drive motor, and a synchronous belt. The drive motor is mounted on a mounting bracket, the second synchronous pulley is fixed to the output shaft of the drive motor and rotatably connected to the mounting bracket, and the second synchronous pulley is connected to the first synchronous pulley by a synchronous belt.

[0017] By adopting the above technical solution, the drive motor controls the rotation of the second synchronous pulley, which in turn causes the synchronous belt to rotate, thereby driving the first synchronous pulley to rotate.

[0018] Preferably, a guide block is fixed on the support base, and a guide rod is fixed on the side wall of the positioning plate. The guide block is provided with through holes for the output shaft of the control cylinder and the guide rod to pass through.

[0019] Preferably, guardrails are installed on both sides of the conveyor belt; a protective cover is fixed on the top of the mounting frame.

[0020] In summary, this application includes at least one of the following beneficial technical effects: The positioning plate and the abutment plate work together to abut and position the folded edge of the packaging bag. At the same time, when the abutment plate and the positioning plate clamp the packaging bag, the abutment plate and the positioning plate slide synchronously with the conveyor belt, and the packaging bag is transported to the sewing part. This reduces the situation where the folded edge is offset when sewing due to the difficulty in fixing the folded edge of the packaging bag, resulting in an uneven sewing line. The drive motor controls the second synchronous pulley to rotate, which in turn causes the synchronous belt to rotate, driving the first synchronous pulley to rotate, which in turn drives the first rotating pulley to drive the main leveling belt to rotate. The main leveling belt and the auxiliary leveling belt abut against both sides of the packaging bag and play a role in leveling and pressing the folded edge of the packaging bag, which facilitates the smooth operation of sewing. The groove on the support base guides the rollers of the sliding base. The abutment plate and positioning plate can move synchronously with the movement of the packaging bag to keep the folded edge of the packaging bag fixed and transport the packaging bag to the sewing section. The fixed cylinder pushes the push plate to push the sliding base of the abutment plate and positioning plate back to its original position, realizing convenient reset and facilitating the transport of the next packaging bag. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the internal structure of the mounting bracket in an embodiment of this application; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a partially exploded structural diagram highlighting the sliding base slidably connected to the support base in an embodiment of this application; Figure 5 This is a partial structural schematic diagram highlighting the fixed cylinder and push plate of an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Mounting frame; 21. Protective cover; 22. Guide channel; 3. Conveyor belt; 31. Guardrail; 4. Folding and positioning part; 5. Sewing part; 6. Leveling structure; 61. Main leveling belt; 611. First rotating pulley; 612. First synchronous pulley; 62. Secondary leveling belt; 621. Second rotating pulley; 7. Drive structure; 71. Second synchronous pulley; 72. Drive motor; 73. Synchronous belt; 8. Abutment plate; 9. Positioning plate; 91. Guide rod; 10. Control cylinder; 11. Sliding structure; 111. Sliding base; 112. Support base; 12. Pulley; 13. Slide groove; 14. Bending plate; 15. Connecting groove; 16. Guide block; 17. Reset assembly; 171. Fixing cylinder; 172. Push plate. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] This application discloses a folding and sewing device for an alkali material packaging line, referring to... Figure 1 It includes a frame 1, a mounting frame 2 and a conveyor belt 3 located below the mounting frame 2, guardrails 31 are installed on both sides of the conveyor belt 3, and a protective cover 21 is fixed on the top of the mounting frame 2.

[0025] Reference Figure 1 , 2 The bottom of the mounting frame 2 is provided with a guide channel 22 for the packaging bag to enter. The mounting frame 2 is provided with a folding edge positioning part 4 and a sewing part 5. The packaging bag is flattened and positioned at the folding edge positioning part 4, and then enters the sewing part 5 to sew the folded edge. The folding edge positioning part 4 includes a flattening structure 6, which includes a main flattening belt 61 and a secondary flattening belt 62 installed on the guide channel 22 and arranged opposite to each other. The main flattening belt 61 and the secondary flattening belt 62 respectively abut against the two sides of the packaging bag and play a role in flattening and pressing the folded edge of the packaging bag. After the packaging bag is clamped, the secondary flattening belt 62 is driven by the transmission of the main flattening belt 61.

[0026] Reference Figure 2 , 3The main leveling belt 61 has first rotating pulleys 611 at both ends to drive it to rotate, and the secondary leveling belt 62 has second rotating pulleys 621 at both ends to support it to rotate. The bottom of the first rotating pulley 611 is equipped with a first synchronous pulley 612 that is rotatably connected to the mounting frame 2. The first synchronous pulley 612 is driven to rotate by the drive structure 7. The first rotating pulley 611 drives the main leveling belt 61 to rotate. The main leveling belt 61 and the secondary leveling belt 62 abut against the two sides of the packaging bag and play a role in leveling and pressing the folded edge of the packaging bag, which facilitates the smooth operation of sewing.

[0027] Reference Figure 2 , 3 The drive structure 7 includes a second synchronous pulley 71, a drive motor 72, and a synchronous belt 73. The drive motor 72 is mounted on the mounting frame 2 near the inner wall of the mounting frame 2. The second synchronous pulley 71 is fixed to the output shaft below the drive motor 72 and rotatably connected to the mounting frame 2. The second synchronous pulley 71 and the first synchronous pulley 612 are connected by the synchronous belt 73. When the drive motor 72 starts, it controls the second synchronous pulley 71 to rotate, which in turn causes the synchronous belt 73 to rotate, driving the first synchronous pulley 612 to rotate. This realizes the conveying of the main leveling belt 61 and the auxiliary leveling belt 62. It should be noted that the frequency of the drive motor 72 and the conveyor belt 3 is synchronized, which makes the guidance of the packaging bag smooth.

[0028] Reference Figure 2 The folding and positioning part 4 also includes an abutment plate 8 and a positioning plate 9 arranged opposite to each other. The positioning plate 9 is movably connected to the side of the guide channel 22 near the drive motor and is driven by the control cylinder 10. The abutment plate 8 is installed on the other side of the guide channel 22. The positioning plate 9 pushes the folded edge of the packaging bag to abut against the abutment plate 8, that is, the folded edge of the packaging bag is clamped by the positioning plate 9 and the abutment plate 8.

[0029] Reference Figure 2 The opposing abutment plates 8 and positioning plates 9 are spaced apart within the mounting frame 2 along the transport direction of the packaging bag, thereby clamping the packaging bag at intervals along the extension direction at the folded edge, achieving a stable positioning effect. In the initial position, the opposing abutment plates 8 and positioning plates 9 are arranged adjacently on one side near the main leveling belt 61. During operation, the abutment plates 8 and positioning plates 9 located near the sewing section 5 first clamp the front end of the packaging bag and transport it to the sewing section 5, then release it, and the packaging bag is gradually sewn. At the same time, the abutment plates 8 and positioning plates 9 located away from the sewing section 5 clamp the rear end of the packaging bag and transport it to the sewing section 5, then release it, completing the overall sewing process of the packaging bag.

[0030] Reference Figure 2 , 4The abutment plate 8 and the positioning plate 9 are respectively connected to the mounting frame 2 via the sliding structure 11. The sliding structure 11 includes a support base 112 and a sliding base 111. The support base 112 is fixed on both sides of the guide channel 22 corresponding to the abutment plate 8 and the positioning plate 9. The sliding base 111 is slidably connected to the support base 112. A pulley 12 is fixed at the bottom of the sliding base 111. A groove 13 for the pulley 12 to slide is opened on the support base 112.

[0031] Reference Figure 2 , 4 The two ends of the sliding base 111 extend downward to form a bent plate 14. A connecting groove 15 is provided on the support base 112 for the bent plate 14 to slide. The cooperation between the bent plate 14 and the connecting groove 15 maintains the connection between the sliding base 111 and the support base 112, and guides the stable sliding of the sliding base 111.

[0032] Reference Figure 2 , 4 A guide block 16 is fixed on the sliding base 111, and a guide rod 91 is fixed on the side wall of the positioning plate 9. The guide block 16 is provided with through holes for the output shaft of the control cylinder 10 and the guide rod 91 to pass through.

[0033] Reference Figure 2 , 5 The sliding base 111 is reset by the reset assembly 17. The reset assembly 17 includes a fixed cylinder 171 and a push plate 172. The fixed cylinder 171 is fixed on the mounting frame 2 and located on the side of the sewing part 5 away from the support base 112. The push plate 172 is fixed to the output shaft of the fixed cylinder 171 and can abut against the sliding base 111 at the bottom of the abutment plate 8 and the positioning plate 9. The fixed cylinder 171 pushes the push plate 172 to push the sliding base 111 of the two adjacent opposing abutment plates 8 and the positioning plate 9 back to their original positions, thus achieving convenient reset. It should be noted that the setting height of the push plate 172 does not interfere with the transportation of the packaging bag.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A folding and sewing device for alkali packaging line production, comprising a frame (1), characterized in that: The frame (1) is provided with a mounting frame (2) and a conveyor belt (3) located below the mounting frame (2). The mounting frame (2) is provided with a folding and positioning part (4) and a sewing part (5). The mounting frame (2) is provided with a guide channel (22) for the packaging bag to enter. The folding and positioning part (4) includes an abutment plate (8) and a positioning plate (9) arranged opposite to each other. The abutment plate (8) is installed on one side of the guide channel (22). The positioning plate (9) is movably connected to the other side of the guide channel (22) and driven by a control cylinder (10). The positioning plate (9) pushes the folded edge of the packaging bag to abut against the abutment plate (8); and the abutment plate (8) and the positioning plate (9) slide synchronously.

2. The folding and sewing device for alkali material packaging line production according to claim 1, characterized in that: The abutment plate (8) and the positioning plate (9) are respectively connected to the mounting frame (2) through the sliding structure (11); the sliding structure (11) includes a sliding base (111) and a support base (112). The support base (112) is fixed on both sides of the guide channel (22), and the sliding base (111) is fixed on the bottom of the abutment plate (8) and the positioning plate (9). The control cylinder (10) is fixed on the sliding base (111); a pulley (12) is fixed on the bottom of the sliding base (111), and a groove (13) for the pulley (12) to slide is opened on the support base (112); the sliding base (111) is reset by the reset assembly (17).

3. The folding and sewing device for alkali material packaging line production according to claim 2, characterized in that: The sliding base (111) extends downward at both ends to form a bent plate (14), and a connecting groove (15) for the bent plate (14) to slide is provided on the support base (112).

4. The folding and sewing device for alkali material packaging line production according to claim 2, characterized in that: The reset assembly (17) includes a fixed cylinder (171) and a push plate (172). The fixed cylinder (171) is fixed on the mounting bracket (2) at the misalignment of the sewing part (5). The push plate (172) is fixed to the output shaft of the fixed cylinder (171) and can abut against the sliding base (111) at the bottom of the abutment plate (8) and the positioning plate (9).

5. The folding and sewing device for alkali material packaging line production according to claim 1, characterized in that: The folding positioning part (4) further includes a leveling structure (6). The leveling structure (6) includes a main leveling belt (61) and a secondary leveling belt (62) installed on the guide channel (22) and arranged opposite to each other. The main leveling belt (61) and the secondary leveling belt (62) respectively abut against the two sides of the packaging bag. The two ends of the main leveling belt (61) are provided with a first rotating pulley (611) to drive the main leveling belt (61) to rotate. The two ends of the secondary leveling belt (62) are provided with a second rotating pulley (621) to support the rotation of the secondary leveling belt (62). The bottom of the first rotating pulley (611) is equipped with a first synchronous pulley (612) rotatably connected to the mounting frame (2). The first synchronous pulley (612) is driven to rotate by the driving structure (7).

6. The folding and sewing device for alkali material packaging line production according to claim 5, characterized in that: The drive structure (7) includes a second synchronous pulley (71), a drive motor (72), and a synchronous belt (73). The drive motor (72) is mounted on the mounting bracket (2). The second synchronous pulley (71) is fixed to the output shaft of the drive motor (72) and rotatably connected to the mounting bracket (2). The second synchronous pulley (71) and the first synchronous pulley (612) are connected by the synchronous belt (73).

7. The folding and sewing device for alkali material packaging line production according to claim 2, characterized in that: A guide block (16) is fixed on the support base (112), and a guide rod (91) is fixed on the side wall of the positioning plate (9). The guide block (16) is provided with a through hole for the output shaft of the control cylinder (10) and the guide rod (91) to pass through.

8. The folding and sewing device for alkali material packaging line production according to claim 1, characterized in that: The conveyor belt (3) is equipped with guardrails (31) on both sides; a protective cover (21) is fixed on the top of the mounting frame (2).

Images