A bag making and ear positioning device

Abstract

The utility model discloses a kind of bag making ear positioning device, belong to bag making equipment technical field, including base, sliding assembly and limiting structure. Base is equipped with the connecting plate with anvil, two sides fixed U-shaped adjusting support, and sliding connection screw rod in the clamping groove of support two side plates. Screw rod upper end is connected with servo motor through synchronous belt to realize synchronous transmission. Sliding assembly includes sliding plate, and its two sides are connected with screw rod by connecting pipe with trapezoidal connecting block, to ensure stable vertical lifting. The lower end of sliding plate is installed cutter assembly, and the end of limiting structure articulated on two sides is compressed by compression roller with buffer structure to bag body. The present application controls cutter height accurately by servo motor, uses synchronous belt to ensure that double screw rod moves synchronously, so that cutting is stable and accurate;Compression roller and its buffer structure can self-adaptively compress different thickness bag body and prevent displacement;Overall structure effectively improves the positioning accuracy of ear cutting process, production efficiency and product consistency.

Description

Technical Field

[0001] This utility model belongs to the technical field of bag making equipment, specifically relating to a bag making ear cutting and positioning device. Background Technology

[0002] Packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. They are widely used in daily life and industrial production. Actual figures show that 80% of used plastic bags end up in landfills like regular waste, with only 7% being recycled.

[0003] In existing bag-making processes, the precision and efficiency of the ear-cutting step directly affect the quality of the finished bags. Traditional ear-cutting devices often use simple cylinders or screws to drive the cutter, which often fails to ensure absolute horizontality of the cutting component during pressure, easily leading to skewed cuts. Simultaneously, the clamping mechanisms used to fix the bag body often lack effective buffering and self-adaptive capabilities. When dealing with bags of different thicknesses or materials, either insufficient clamping force causes bag displacement, resulting in inaccurate ear-cutting positions; or excessive pressure damages or even breaks the bag surface. Furthermore, adjusting the cutting height is usually not convenient or precise enough to quickly adapt to the production needs of various product specifications. These factors collectively restrict the improvement of production efficiency and product qualification rate.

[0004] Therefore, there is a need for an automated ear-cutting device that can accurately position, flexibly compress, and is easy to adjust. Utility Model Content

[0005] The purpose of this invention is to provide a bag-making ear-cutting positioning device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bag-making ear-cutting positioning device, comprising a base, a sliding assembly, and a limiting structure. A connecting plate is fixedly connected to the upper center of the base, and an anvil is fixedly connected to the upper center of the connecting plate. The middle portions of both sides of the base are respectively fixedly connected to the lower ends of the two side plates of a U-shaped adjusting bracket. Each side plate of the adjusting bracket has a slot on its opposite side, and a screw is slidably connected within each slot. The upper ends of the screws penetrate the upper end of the adjusting bracket and are engaged with a synchronous belt. The other end of the synchronous belt is engaged with the lower end of the output shaft of a servo motor. The sliding assembly includes a sliding plate. Connecting blocks are fixedly connected to the middle of both sides of the sliding plate. Connecting pipes are fixedly connected to the lower ends of the connecting blocks. Fixed rods are fixedly connected to both sides of the connecting pipes. There are two sets of limiting structures, and each set of limiting structures includes two sets of connecting rods. The upper ends of the connecting rods are hinged to the left and right sides of the sliding plate, and the lower ends of the connecting rods on opposite sides are provided with grooves. First sliding blocks are slidably connected in the grooves. The upper ends of the first sliding blocks are connected to the upper ends of the grooves through symmetrical buffer structures. A pressure roller is installed on the opposite side of one of the first sliding blocks through a connecting shaft. A cutter assembly is installed in the middle of the lower end of the sliding plate.

[0007] It should be noted in the solution that the connecting plate is provided with limiting grooves on both sides, and both can be respectively fitted and slidably connected to the pressure roller.

[0008] It is worth noting that the outer surface of the pressure rollers is provided with anti-slip texture.

[0009] Furthermore, it should be noted that the cross-sections of the slot and the connecting block are both trapezoidal and can be slidably connected to each other. The connecting block is provided with a threaded hole in the middle and is threaded to the outer surface of the corresponding screw.

[0010] In a preferred embodiment, the other end of each fixing rod passes through the connecting grooves provided at the front and rear ends of the two side plates of the adjusting bracket, and is fixedly connected to the lower end of the connecting rod of the corresponding limiting structure.

[0011] In a preferred embodiment, the output shafts of the symmetrical screw and servo motor are provided with limit rings on both the upper and lower sides of the synchronous belt, and the output shafts of the symmetrical screw and servo motor are arranged in a triangular pattern.

[0012] In a preferred embodiment, the buffer structure includes a first fixed shaft and a second fixed shaft, and an auxiliary spring provided on the outer surface of the first fixed shaft and the second fixed shaft. The lower end of the first fixed shaft is fixedly connected to a second sliding block, and the second sliding block is respectively fitted and slidably connected to a sliding groove in the middle of the upper end of the second fixed shaft.

[0013] Compared with the prior art, the bag-making ear-cutting positioning device provided by this utility model has at least the following beneficial effects:

[0014] (1) This bag-making ear-cutting positioning device achieves precise adjustment of the height position of the sliding component through the coordinated control of a synchronous belt drive system and a servo motor. The servo motor drives the synchronous belt to rotate the two screws synchronously. Since the connecting block is threaded to the screws and fits into the trapezoidal slot, the skew or jamming problems that may occur with traditional single-sided drive are effectively avoided. This design ensures that the sliding plate is always in a horizontal and stable state, so that the cutting component can always maintain a vertical movement trajectory during the pressing process, which greatly improves the accuracy and consistency of the ear-cutting position. At the same time, the high responsiveness and programmability of the servo motor allow for rapid adjustment of the cutting height according to the process requirements of different bag types, which significantly improves the adaptability of the equipment and the flexibility of production.

[0015] (2) This device, through a combination of a hinged limiting structure and a buffer mechanism, simultaneously achieves effective compression and flexible adaptation of the bag body during the ear-cutting process. The anti-slip texture on the outer surface of the pressure roller enhances the friction with the bag body, preventing it from shifting during cutting. The buffer structure at the lower end of the connecting rod, through the cooperation of a spring and a sliding block, allows the pressure roller to adapt to bag materials of different thicknesses or softness. This design avoids material damage caused by excessive compression and ensures the stability of the bag body during cutting, thereby guaranteeing the flatness and quality of the cut. At the same time, the pressure roller can be raised and lowered as a whole with the sliding plate, and can be fully raised during non-working periods, facilitating the insertion and removal of the bag body, improving operational efficiency and human-machine interaction. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram illustrating the limiting position of this utility model;

[0018] Figure 3 This is a schematic diagram of the buffer structure of this utility model.

[0019] In the diagram: 1. Base; 2. Connecting plate; 201. Limiting groove; 3. Anvil; 4. Adjusting bracket; 401. Slot; 402. Connecting groove; 5. Screw; 501. Limiting ring; 6. Synchronous belt; 7. Servo motor; 701. Output shaft; 8. Sliding assembly; 801. Sliding plate; 802. Connecting block; 803. Threaded hole; 804. Connecting pipe; 805. Fixing rod; 9. Limiting structure; 901. Connecting rod; 902. Groove; 903. First sliding block; 904. Connecting shaft; 905. Pressure roller; 906. Anti-slip texture; 907. Buffer structure; 9071. Auxiliary spring; 9072. First fixed shaft; 9073. Second sliding block; 9074. Second fixed shaft; 9075. Sliding groove; 10. Cutting blade assembly. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Please see Figure 1-3 This utility model provides a bag-making ear-cutting positioning device, including: a base 1, a sliding component 8, and a limiting structure 9. A connecting plate 2 is fixedly connected to the middle of the upper end of the base 1, and an anvil 3 is fixedly connected to the middle of the upper end of the connecting plate 2. The middle of both sides of the base 1 are respectively fixedly connected to the lower ends of the two side plates of a U-shaped adjusting bracket 4. Each side plate of the adjusting bracket 4 has a slot 401 in the middle of its opposite side. A screw 5 is slidably connected in each slot 401. The upper end of each screw 5 passes through the upper end of the adjusting bracket 4 and is engaged with a synchronous belt 6. The other end of the synchronous belt 6 is engaged with the lower end of the output shaft 701 of a servo motor 7. The sliding component 8 includes a sliding plate 801, and connecting blocks 80 are fixedly connected to the middle of both sides of the sliding plate 801. 2. A connecting pipe 804 is fixedly connected to the lower end of the connecting block 802. A fixing rod 805 is fixedly connected to both sides of the connecting pipe 804. There are two sets of limiting structures 9, and each set of limiting structures 9 includes two sets of connecting rods 901. The upper ends of the connecting rods 901 are hinged to the left and right sides of the sliding plate 801. The lower ends of the connecting rods 901 are provided with grooves 902 on opposite sides. The first sliding block 903 is slidably connected in the grooves 902. The upper ends of the first sliding blocks 903 are connected to the upper ends of the grooves 902 through symmetrical buffer structures 907. A pressure roller 905 is installed on the opposite side of one side of the first sliding block 903 through a connecting shaft 904. A cutter assembly 10 is installed in the middle of the lower end of the sliding plate 801.

[0022] Further as Figure 1As shown, it is worth noting that both sides of the connecting plate 2 are provided with limiting grooves 201, and each groove can be slidably connected to the pressure roller 905. The limiting grooves 201 on both sides of the connecting plate 2 can form a precise sliding fit with the pressure roller 905. This design provides rigid guidance and a final positioning point for the downward movement of the pressure roller 905, ensuring that the pressure roller 905 can accurately and consistently press into the preset position each time. This effectively prevents problems such as uneven bag pressing or inaccurate ear cutting position caused by positional deviation of the pressure roller 905, greatly improving processing accuracy and product consistency.

[0023] Further as Figure 2 As shown, it is worth noting that the outer surface of the pressure roller 905 is provided with anti-slip textures 906. These textures significantly increase the friction between the pressure roller 905 and the bag surface. At the moment the cutting assembly 10 cuts, the rollers firmly grip the bag, effectively resisting the impact and displacement caused by the cutting force. This prevents the bag from sliding or wrinkling during the cutting process, ensuring a clean and precise cut and improving the quality of the finished bag.

[0024] Further as Figure 2 As shown, it is worth noting that both the slot 401 and the connecting block 802 have trapezoidal cross-sections and can slide together in a fitted manner. The connecting block 802 also has a threaded hole 803 in its center, which is threaded to the outer surface of the corresponding screw 5. By setting the cross-sections of the slot 401 and the connecting block 802 to fit together in a trapezoidal shape, this design ensures that the connecting block 802 can only slide vertically within the slot 401, preventing rotation or horizontal movement. This strong anti-torsion and limiting capability ensures that the sliding plate 801 maintains a stable horizontal state when raised and lowered under the drive of the screw 5, thereby guaranteeing the vertical movement trajectory of the cutter assembly 10 and ultimately achieving precise and straight cutting.

[0025] This solution has the following working process: The servo motor 7 starts, driving its output shaft 701 to rotate, which in turn drives the two screws 5 to rotate synchronously via the synchronous belt 6. Since the threaded hole 803 in the middle of the connecting block 802 is threadedly engaged with the screw 5, and the connecting block 802 is restricted to sliding up and down within the trapezoidal groove 401, the rotation of the screw 5 is converted into the vertical lifting and lowering motion of the sliding plate 801. When the sliding plate 801 descends, it drives the cutter assembly 10 at its lower end to move downward to complete the ear-cutting operation, and at the same time drives the connecting rods 901 hinged on both sides to swing downward, so that the pressure roller 905 at the lower end of the connecting rod 901 presses the bag body. The anti-slip texture 906 on the surface of the pressure roller 905 increases the friction and prevents the bag body from shifting. During the pressing process, if the thickness of the bag body is uneven, the buffer structure 907 can provide buffering through the compression of the auxiliary spring 9071 and the sliding of the first sliding block 903 in the groove 902 to avoid damaging the bag body. The cutter assembly 10 finally completes the cutting on the anvil 3.

[0026] As can be seen from the above working process, the limiting grooves 201 on both sides of the connecting plate 2 can form a precise sliding fit with the pressure roller 905. This design provides rigid guidance and a final positioning point for the downward movement of the pressure roller 905, ensuring that the pressure roller 905 can accurately and consistently press into the preset position each time. This effectively prevents problems such as uneven bag pressing or inaccurate ear position caused by the position deviation of the pressure roller 905, greatly improving processing accuracy and product consistency. Anti-slip textures 906 are provided on the outer surface of the pressure roller 905, significantly increasing the friction between the pressure roller 905 and the bag surface. At the moment the cutting assembly 10 cuts, it can firmly grasp the bag, effectively resisting the impact and displacement tendency brought by the cutting force, eliminating the phenomenon of the bag sliding or wrinkling during the cutting process, thus ensuring a clean and precise cut and improving the quality of the finished bag. The cross-sections of both the slot 401 and the connecting block 802 are designed to fit each other in a trapezoidal shape. This design ensures that the connecting block 802 can only slide vertically within the slot 401, and cannot rotate or move horizontally. This strong anti-torsion and limiting capability ensures that the sliding plate 801 remains stable and horizontal when it is raised and lowered by the screw 5, thereby guaranteeing the vertical movement trajectory of the cutter assembly 10 and ultimately achieving precise and straight cutting.

[0027] Further as Figure 2As shown, it is worth noting that the other end of the fixing rod 805 passes through the connecting grooves 402 provided at the front and rear ends of the two side plates of the adjusting bracket 4, and is fixedly connected to the lower end of the connecting rod 901 of the corresponding limiting structure 9. The other end of the fixing rod 805 passes through the connecting groove 402 and is fixedly connected to the lower end of the connecting rod 901. This design cleverly links the sliding assembly 8 and the limiting structure 9 together. When the sliding plate 801 rises and falls, the lower end of the connecting rod 901 can be forcibly driven to move along with it through the cooperation of the fixing rod 805 and the connecting groove 402, thereby controlling the opening and closing angle of the pressure roller 905. This realizes the coordinated action of the cutter assembly 10 and the pressure roller 905, with a high degree of automation and a smoother operation process.

[0028] Further as Figure 1 As shown, it is worth noting that the output shafts 701 of the symmetrical screw 5 and the servo motor 7 are equipped with limit rings 501 on both the upper and lower sides of the synchronous belt 6, and the output shafts 701 of the symmetrical screw 5 and the servo motor 7 are arranged in a triangular pattern. These two screws 5 and the output shafts 701 of the servo motor 7 are connected by the synchronous belt 6, and limit rings 501 are provided on both their upper and lower sides. This triangular layout ensures a sufficiently large meshing angle between the synchronous belt 6 and each rotating shaft, providing strong transmission capacity and stability. The limit rings 501 strictly prevent axial displacement or tooth skipping of the synchronous belt 6 during high-speed operation, ensuring the accuracy and reliability of power transmission, thereby ensuring the absolute synchronization of the movement of the twin screws 5.

[0029] Further as Figure 3 As shown, it is worth noting that each buffer structure 907 includes a first fixed shaft 9072 and a second fixed shaft 9074, and an auxiliary spring 9071 located on the outer surface of the first fixed shaft 9072 and the second fixed shaft 9074. A second sliding block 9073 is fixedly connected to the lower end of each of the first fixed shafts 9072, and each of these blocks slidably engages with a sliding groove 9075 located in the middle of the upper end of the second fixed shaft 9074. The buffer structure 907, through the cooperation of the first fixed shaft 9072, the second fixed shaft 9074, the auxiliary spring 9071, and the second sliding block 9073 and the sliding groove 9075, constitutes a highly efficient elastic buffer system. When the pressure roller 905 contacts and presses against bags of varying thicknesses, this structure provides flexible buffering through the compression of the auxiliary spring 9071 and the sliding of the first sliding block 903 within the groove 902, adaptively adjusting the pressure. This not only reliably presses the bag to prevent displacement but also effectively avoids damaging or crushing the delicate bag material due to excessive pressure.

[0030] In summary: The other end of the fixed rod 805 passes through the connecting groove 402 and is fixedly connected to the lower end of the connecting rod 901. This design cleverly links the sliding assembly 8 with the limiting structure 9. When the sliding plate 801 rises and falls, the lower end of the connecting rod 901 can be forcibly driven to move along with it through the cooperation of the fixed rod 805 and the connecting groove 402, thereby controlling the opening and closing angle of the pressure roller 905. This achieves coordinated action between the cutter assembly 10 and the pressure roller 905, resulting in a high degree of automation and a smoother operation process. The output shafts 701 of the two screws 5 and the servo motor 7 are arranged in a triangle and connected by the synchronous belt 6, with limiting rings 501 set on both the upper and lower sides. The triangular layout ensures a sufficiently large meshing wrap angle between the synchronous belt 6 and each rotating shaft, providing strong transmission capacity and stability. The limiting rings 501 can strictly prevent the synchronous belt 6 from axially shifting or skipping teeth during high-speed operation, ensuring the accuracy and reliability of power transmission, thereby ensuring the absolute synchronization of the movement of the twin screws 5. The buffer structure 907, through the cooperation of the first fixed shaft 9072, the second fixed shaft 9074, the auxiliary spring 9071, and the second sliding block 9073 with the sliding groove 9075, constitutes a highly efficient elastic buffer system. When the pressure roller 905 contacts and presses against bags of varying thicknesses, this structure provides flexible buffering through the compression of the auxiliary spring 9071 and the sliding of the first sliding block 903 within the groove 902, adaptively adjusting the pressure. This not only reliably presses the bag to prevent displacement but also effectively avoids crushing or damaging the delicate bag material due to excessive pressure.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bag-making ear-cutting positioning device, comprising a base (1), a sliding assembly (8), and a limiting structure (9), characterized in that: A connecting plate (2) is fixedly connected to the middle of the upper end of the base (1), and an anvil (3) is fixedly connected to the middle of the upper end of the connecting plate (2). The middle of both sides of the base (1) are respectively fixedly connected to the lower ends of the two side plates of the U-shaped adjustment bracket (4). The middle of the opposite sides of the two side plates of the adjustment bracket (4) are provided with slots (401). Screws (5) are slidably connected in the slots (401). The upper ends of the screws (5) pass through the upper end of the adjustment bracket (4) and are engaged with the synchronous belt (6). The other end of the synchronous belt (6) is engaged with the lower end of the output shaft (701) of the servo motor (7). The sliding assembly (8) includes a sliding plate (801). Connecting blocks (802) are fixedly connected to the middle of both sides of the sliding plate (801). Connecting blocks (802) are fixedly connected to the lower ends of the connecting blocks (802). The connecting pipe (804) has fixed rods (805) fixedly connected to both sides. The limiting structure (9) has two sets, and each set of the limiting structure (9) includes two sets of connecting rods (901). The upper ends of the connecting rods (901) are hinged to the left and right sides of the sliding plate (801), and the lower ends of the connecting rods (901) are provided with grooves (902) on opposite sides. The grooves (902) are fitted and slidably connected with first sliding blocks (903). The upper ends of the first sliding blocks (903) are connected to the upper ends of the grooves (902) through symmetrical buffer structures (907). The opposite side of one side of the first sliding block (903) is equipped with a pressure roller (905) through a connecting shaft (904), and a cutter assembly (10) is installed in the middle of the lower end of the sliding plate (801).

2. The bag-making ear-cutting positioning device according to claim 1, characterized in that: The connecting plate (2) has limiting grooves (201) on both sides, and each groove can be slidably connected to the pressure roller (905).

3. The bag-making ear-cutting positioning device according to claim 1, characterized in that: The outer surface of the pressure roller (905) is provided with anti-slip texture (906).

4. The bag-making ear-cutting positioning device according to claim 1, characterized in that: The cross-sections of the slot (401) and the connecting block (802) are both trapezoidal and can be fitted and slidably connected to each other. The connecting block (802) is provided with a threaded hole (803) in the middle and is threadedly connected to the outer surface of the corresponding screw (5).

5. The bag-making ear-cutting positioning device according to claim 1, characterized in that: The other end of each fixed rod (805) passes through the connecting grooves (402) provided at the front and rear ends of the two side plates of the adjusting bracket (4) and is fixedly connected to the lower end of the connecting rod (901) of the corresponding limiting structure (9).

6. The bag-making ear-cutting positioning device according to claim 1, characterized in that: The output shafts (701) of the symmetrical screw (5) and servo motor (7) are provided with limit rings (501) on both the upper and lower sides of the synchronous belt (6), and the output shafts (701) of the symmetrical screw (5) and servo motor (7) are distributed in a triangular shape.

7. The bag-making ear-cutting positioning device according to claim 1, characterized in that: Each buffer structure (907) includes a first fixed shaft (9072) and a second fixed shaft (9074), and an auxiliary spring (9071) provided on the outer surface of the first fixed shaft (9072) and the second fixed shaft (9074). The lower end of the first fixed shaft (9072) is fixedly connected to a second sliding block (9073), and each of them is respectively fitted and slidably connected to a sliding groove (9075) in the middle of the upper end of the second fixed shaft (9074).

Images