A flattening device for paper bag production

Abstract

The utility model discloses a kind of flattening devices for paper bag production, including bottom plate and stand, the stand is set in the top of bottom plate in transverse way, its both ends are respectively fixedly connected with the corresponding outer wall end portion of bottom plate, first cylinder group is fixed in the top of stand, sliding rod for being slidably connected with connecting piece is equipped between the inner wall of stand, the bottom of connecting piece is fixed with pressing plate, the surface of bottom plate is fixed with sliding rod, the both ends of translation bearing platform are slidably connected with the sliding rod by sliding block, the utility model forms three-way positioning structure by L type first positioning plate, adjustable comb tooth type second positioning plate and push plate with silica gel buffer, ensure that paper bag appearance is flat, avoid artificial to spend a lot of time to arrange to be flattened paper bag, adopt translation bearing platform, realize the automatic switching of "material receiving-flattening" station by second cylinder group, operator can be loaded in the safe area away from pressing plate, avoid the risk of accidental touch in flattening process.

Description

Technical Field

[0001] This utility model mainly relates to the field of paper bag production technology, specifically a flattening device for paper bag production. Background Technology

[0002] Paper bag production refers to the process of using paper as the main raw material and through a series of specific processing techniques and procedures to make paper into bag-shaped products with a certain shape, size, structure and function, which can be used to hold and package goods.

[0003] The flattening device for paper bag production is the last step in the paper bag production process. It is a specialized device that usually processes the bottom folds of paper bags. By flattening, the folded paper bags can be stacked more compactly, reducing space occupation and lowering warehousing and transportation costs. Existing paper bag flattening equipment has shortcomings in terms of positioning and workstation coordination. First, most flattening equipment lacks positioning devices and relies on simple baffles to stack paper bags. However, if the stacked paper bags are fixed only on one side, it is easy to cause the paper bags to be skewed or misaligned. Therefore, a multi-directional positioning structure is needed to assist in the straightening of paper bags. Some equipment simply relies on manual sorting, which increases processing efficiency. Second, in the traditional operation mode, operators put the products to be processed directly near the pressing plate and repeatedly operate them, which poses a high risk of pinching and crushing injuries. Utility Model Content

[0004] This utility model addresses the problem that existing technical solutions are too simplistic by providing a flattening device for paper bag production. This device solves the technical problem mentioned in the background that relies on manual handling and that the traditional single-station operation mode requires operators to repeatedly operate near the pressure plate, posing a high safety risk.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A flattening device for paper bag production includes a base plate and a vertical frame. The vertical frame is horizontally positioned above the base plate, with its two ends fixedly connected to the corresponding outer wall ends of the base plate. A first cylinder assembly is fixed to the top of the vertical frame. A sliding rod is provided between the inner walls of the vertical frame for sliding connection with a connecting member. A pressure plate is fixed to the bottom of the connecting member. The sliding rod is fixed to the surface of the base plate. Both ends of a translational support platform are slidably connected to the sliding rod via sliders. A first positioning plate is fixed to the surface of the translational support platform. The translational support platform is provided with a detachably connected second positioning plate. A horizontally positioned cylinder is fixed to the edge of the base plate on the same side as the second positioning plate. A push plate is fixed to the piston rod end of the cylinder for contacting the side of the stacked paper bags.

[0006] Furthermore, the upright frame is located in the middle area of ​​the base plate, and the outer wall of the sliding rod on the surface of the upright frame for sliding connection of the connecting member is sleeved with a spring for buffering the downward impact force of the pressure plate. The piston rod of the first cylinder group is fixedly connected to the top of the connecting member, driving the pressure plate to make vertical reciprocating motion along the sliding rod.

[0007] Furthermore, the first positioning plate is L-shaped, and a second cylinder assembly is provided at one end of the first positioning plate. The piston rod of the second cylinder assembly is fixedly connected to the translational support platform, and the translational support platform slides horizontally between the pressure plate and the bottom plate through the second cylinder assembly.

[0008] Furthermore, the short sides of the second positioning plate and the first positioning plate are located on the same side of the translation support platform and are spaced a certain distance apart. The second positioning plate includes a vertical main plate and several comb-shaped components distributed at equal intervals. The comb-shaped components are perpendicular to and fixedly connected to the vertical main plate. The bottom of the vertical main plate is provided with a protrusion for engaging with the translation support platform. The surface of the translation support platform is provided with multiple adjustment grooves for adapting to the protrusions.

[0009] Furthermore, the adjustment grooves are distributed at equal intervals along the surface of the translational support platform, with the central axis of the groove as the reference. A scale is engraved on the surface of the translational support platform within the distribution range of the adjustment grooves, and the vertical main board side of the second positioning plate is in contact with the scale.

[0010] Furthermore, the surface of the push plate is covered with silicone, and the end of the push plate connected to the cylinder is provided with two sets of telescopic sliding sleeves. The two sets of sleeves are symmetrically distributed about the vertical center line of the cylinder. The sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is fixedly connected to the push plate, and one end of the outer sleeve is fixed to the base plate. The inner sleeve can slide along the cylinder axis inside the outer sleeve. The bottom of the push plate is spaced a certain distance from the surface of the translation support platform.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This equipment forms a three-way positioning structure through an L-shaped first positioning plate, an adjustable comb-shaped second positioning plate, and a push plate with silicone cushioning. First, the L-shaped structure provides dual positioning references in the longitudinal and transverse directions to prevent paper bags from stacking crookedly. The gaps in the comb-shaped second positioning plate avoid protruding parts such as handles to prevent squeezing and deformation, while enhancing edge fit. The silicone cushioning layer and telescopic sliding sleeve of the push plate further reduce rigid impact, ensuring that the paper bags have a flat appearance and avoiding the need for manual labor to spend a lot of time sorting and flattening paper bags.

[0012] 2. A translational support platform is adopted, and the automatic switching between the "receiving-flattening" station is realized through the second cylinder group. The operator can load the material in a safe area away from the pressure plate, avoiding the risk of accidental contact during the flattening process. At the same time, the spring buffer system on the outer wall of the slide bar realizes the pressing cycle of "rapid pressing, flexible contact, and uniform pressure holding", which improves efficiency while ensuring the flattening effect. This dual-station design separates the loading and flattening operations. When the support platform completes the paper bag pressing at the flattening station, the operator can simultaneously carry out the pre-processing work of the next batch of paper bags in the front safe area, improving work efficiency.

[0013] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the frame structure of this utility model; Figure 3 This is a schematic diagram of the base plate structure of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0015] Numbering on the map: 1. Base plate; 2. Stand; 3. First cylinder assembly; 4. Connecting parts; 5. Horizontal support platform; 6. Second cylinder assembly; 7. Cylinder; 8. Push plate; 9. First positioning plate; 10. Second positioning plate; 11. Adjustment groove; 12. Pressure plate. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Please refer to the appendix carefully. Figure 1-4A paper bag flattening device includes a base plate 1 and a stand 2. The stand 2 is horizontally positioned above the base plate 1, with its two ends fixedly connected to the corresponding outer wall ends of the base plate 1. A first cylinder assembly 3 is fixed to the top of the stand 2. A sliding rod is provided between the inner walls of the stand 2 for sliding connection with a connecting member 4. A pressure plate 12 is fixed to the bottom of the connecting member 4. A sliding rod is fixed to the surface of the base plate 1. The two ends of a translational support platform 5 are slidably connected to the sliding rod via sliders. A first positioning plate 9 is fixed to the surface of the translational support platform 5. The translational support platform 5 is provided with a detachably connected second positioning plate 10. A horizontally positioned cylinder 7 is fixed to the edge of the base plate 1 on the same side as the second positioning plate 10. A push plate 8 for contacting the side of the stacked paper bags is fixed to the piston rod end of the cylinder 7.

[0019] In this embodiment, as Figure 1 and Figure 2 As shown, the upright frame 2 is located in the middle area of ​​the base plate 1. The outer wall of the sliding rod of the connecting piece 4 on the surface of the upright frame 2 is fitted with springs to buffer the downward impact of the pressure plate 12. The piston rod of the first cylinder group 3 is fixedly connected to the top of the connecting piece 4, driving the pressure plate 12 to make vertical reciprocating motion along the sliding rod.

[0020] With the above structure, the spring sleeved on the outer wall of the slide bar absorbs the impact force through elastic deformation when the pressure plate 12 is pressed down, ensuring that the pressing force is uniform and controllable. When the first cylinder group 3 drives the pressure plate 12 to move vertically, it can combine the buffering characteristics of the spring to form a pressing cycle process of rapid pressing, flexible contact, and uniform pressure holding.

[0021] In this embodiment, as Figure 3 As shown, the first positioning plate 9 is L-shaped, and a second cylinder group 6 is provided at one end of the first positioning plate 9. The piston rod of the second cylinder group 6 is fixedly connected to the translation support platform 5. The translation support platform 5 slides horizontally between the pressure plate 12 and the base plate 1 through the second cylinder group 6.

[0022] Through the above structure, the L-shaped structure provides a dual positioning reference for stacking paper bags in both the longitudinal and transverse directions. Its long side and short side form a vertical constraint surface to ensure the initial positional accuracy of the paper bags during stacking and avoid skewing. After the paper bags have completed three-way positioning and alignment on the surface of the translational support platform 5, the second cylinder group 6 drives the translational support platform 5 to slide in the horizontal direction, realizing the automatic switching of the "receiving-flattening" station. This allows the operator to load materials away from the safe area of ​​the pressure plate 12, avoiding the risk of accidental contact during the flattening process.

[0023] In this embodiment, as Figure 3As shown, the short sides of the second positioning plate 10 and the first positioning plate 9 are located on the same side of the translation support platform 5 and are spaced a certain distance apart. The second positioning plate 10 includes a vertical main plate and several comb-shaped components that are evenly spaced. The comb-shaped components are perpendicular to the vertical main plate and fixedly connected. The bottom of the vertical main plate is provided with a protrusion for engaging with the translation support platform 5. The surface of the translation support platform 5 is provided with multiple adjustment grooves 11 for adapting to the protrusion.

[0024] Through the above structure, the comb-shaped parts of the second positioning plate 10 are equidistantly connected to the vertical main plate. Its gap structure can be adapted to protruding parts such as paper bag handles, avoiding deformation caused by hard compression. At the same time, the interval contact enhances the fit to the edges of the stacked paper bags and improves the shaping regularity.

[0025] In this embodiment, as Figure 3 and Figure 4 As shown, the adjustment grooves 11 are distributed at equal intervals along the surface of the translational support platform 5 with the central axis of the groove opening as the reference, and the surface of the translational support platform 5 is engraved with a scale within the distribution range of the adjustment grooves 11. The vertical main board side of the second positioning plate 10 is in contact with the scale.

[0026] With the above structure, the equidistantly distributed adjustment grooves 11, with the central axis as the reference and in conjunction with the surface scale, can precisely adjust the lateral positioning accuracy of the second positioning plate 10 according to the paper bag specifications, thereby achieving regular shaping of the stacked paper bag material pile.

[0027] In this embodiment, as Figure 3 As shown, the surface of the push plate 8 is covered with silicone, and the end of the push plate 8 connected to the cylinder 7 is provided with two sets of telescopic sliding sleeves. The two sets of sleeves are symmetrically distributed on the left and right sides with the vertical center line of the cylinder 7 as the axis of symmetry. The sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is fixedly connected to the push plate 8, and one end of the outer sleeve is fixed to the base plate 1. The inner sleeve can slide along the axial direction of the cylinder 7 inside the outer sleeve. The bottom of the push plate 8 is spaced a certain distance from the surface of the translational support platform 5.

[0028] Through the above structure, firstly, the silicone layer covering the surface of the push plate 8 can reduce the rigid compression of the push plate 8 on the side of the paper bag through elastic deformation, avoiding paper wrinkles or damage to the handle, and ensuring the smooth appearance of the paper bag. Secondly, the two additional sets of symmetrically distributed telescopic sliding sleeves also provide axial guidance for the movement of the push plate 8, preventing the push plate 8 from shifting under the drive of the cylinder 7, and ensuring the accuracy of three-way positioning. Finally, the bottom of the push plate 8 is kept at a distance from the surface of the translational support platform 5, which can prevent the push plate 8 from scratching the platform surface when moving, causing motion interference.

[0029] The specific operating procedure of this utility model is as follows: It should be noted that in actual use, in order to ensure synchronization, the first cylinder group 3 and the second cylinder group 6 are connected end to end in series. In order to ensure synchronized action, a pressure compensation valve is added to the series circuit. This valve can automatically adjust the pressure distribution according to the load of each cylinder group. At the same time, a closed-loop control system is formed by combining a displacement sensor and a proportional valve. The displacement sensor monitors the position of the pressure plate 12 and the translational support platform 5 in real time and feeds the signal back to the control system. The control system adjusts the intake volume and intake pressure of the corresponding cylinder group precisely through the proportional valve according to the preset motion trajectory.

[0030] First, the base plate 1 is fixed to the paper bag processing outlet end (i.e., the last step of the bag making process) through the panel with mounting holes on the edge.

[0031] A proximity switch is installed at one end of the base plate 1 to detect the reset endpoint of the translation support platform 5, so as to link the action of the first cylinder group 3. According to the paper bag specifications, the second positioning plate 10 is fixed to the corresponding position of the scale on the surface of the translation support platform 5 through the insertion structure of the adjustment groove 11 and the second positioning plate 10.

[0032] Start the second cylinder group 6 to push the translation support platform 5 along the slide bar on the surface of the bottom plate 1 to the discharge end near the external bag making equipment. At this time, the translation support platform 5 is at the extreme position far away from the pressure plate 12.

[0033] The operator removes the paper bags with the bottom folded edges completed from the automatic rotating receiving part of the bag making equipment and stacks them on the surface of the translational support platform 5. It should be noted that the rear end of the paper bag abuts against the L-shaped long side of the first positioning plate 9 to ensure longitudinal positioning, and the other side of the paper bag abuts against the short side of the first positioning plate 9 and the comb-shaped part of the second positioning plate 10. Since most paper bags have a handle with a pull rope at the front end, the comb-shaped part on the vertical surface of the second positioning plate 10 can not only regulate the paper bag at the other end, but its spaced-out structure is more fitting than a closed surface.

[0034] Furthermore, the second positioning plate 10 can be adjusted on the translational support platform 5 according to the specifications of the paper bag by means of the adjustment groove 11, so as to ensure that its comb-shaped parts are located at the front end of the paper bag. Since the specifications of the paper bags processed in the same batch are consistent, the adjustment is only required on the first time.

[0035] After positioning is completed, cylinder 7 is activated, and its piston rod drives push plate 8. The silicone surface of push plate 8 contacts the side of the paper bag and moves closer to the paper bag, forming a three-way compression with the first positioning plate 9 and the second positioning plate 10, which straightens the stacked paper bags into a material pile. The telescopic sliding sleeve on one side of push plate 8 provides guidance and buffering during this process.

[0036] After the piston rod of cylinder 7 drives the push plate 8 to reset, the second cylinder group 6 is started. The piston rod slowly pulls the translational support platform 5 to move along the slide rod towards the pressure plate 12. When the support platform reaches the extreme position in the middle of the base plate 1, the proximity switch is triggered, and the signal is transmitted to the control system to drive the first cylinder group 3.

[0037] The piston rod of the first cylinder group 3 pushes the connecting piece 4, causing the pressure plate 12 to descend vertically along the slide bar of the upright frame 2. At this time, the spring on the outer wall of the slide bar buffers the downward impact force, ensuring that the flattening force is uniform.

[0038] During the flattening process, the pressure sensor inside the translational support platform 5 monitors the pressure in real time, and the pressure plate 12 stops for a set time after flattening the paper bag (the pressure holding time can be adjusted according to the thickness of a single paper bag). When the pressure reaches the preset value, the PLC controls the first cylinder group 3 to retract. At the same time, the translational support platform 5, driven by the second cylinder group 6, moves the flattened paper bag pile to the unloading position.

[0039] The operator removes the flattened paper bag pile and simultaneously places a new batch of paper bags to be flattened in the empty area of ​​the horizontal support platform 5.

[0040] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A flattening device for paper bag production, comprising a base plate (1) and a stand (2), characterized in that: The upright frame (2) is set horizontally above the base plate (1), and its two ends are fixedly connected to the corresponding outer wall ends of the base plate (1). The top of the upright frame (2) is fixed with a first cylinder group (3). The inner wall of the upright frame (2) is provided with a sliding rod for sliding connection with the connector (4). The bottom of the connector (4) is fixed with a pressure plate (12). The surface of the base plate (1) is fixed with a sliding rod and a translation support platform (5). The two ends of the translation support platform (5) are slidably connected to the sliding rod through a slider. The surface of the translation support platform (5) is fixed with a first positioning plate (9). The translation support platform (5) is provided with a detachably connected second positioning plate (10). The base plate (1) is fixed with a horizontally arranged cylinder (7) on the same side edge as the second positioning plate (10). The piston rod end of the cylinder (7) is fixed with a push plate (8) for contacting the side of the stacked paper bags.

2. The flattening device for paper bag production according to claim 1, characterized in that: The upright frame (2) is located in the middle area of ​​the base plate (1). The outer wall of the sliding rod of the connecting piece (4) on the surface of the upright frame (2) is fitted with a spring for buffering the downward impact of the pressure plate (12). The piston rod of the first cylinder group (3) is fixedly connected to the top of the connecting piece (4) to drive the pressure plate (12) to make vertical reciprocating motion along the sliding rod.

3. The flattening device for paper bag production according to claim 1, characterized in that: The first positioning plate (9) is L-shaped, and a second cylinder group (6) is provided at one end of the first positioning plate (9). The piston rod of the second cylinder group (6) is fixedly connected to the translation support platform (5). The translation support platform (5) slides horizontally between the pressure plate (12) and the bottom plate (1) through the second cylinder group (6).

4. The flattening device for paper bag production according to claim 1, characterized in that: The short sides of the second positioning plate (10) and the first positioning plate (9) are located on the same side of the translation support platform (5) and are spaced a certain distance apart. The second positioning plate (10) includes a vertical main plate and several comb-shaped parts that are evenly spaced. The comb-shaped parts are perpendicular to and fixedly connected to the vertical main plate. The bottom of the vertical main plate is provided with a protrusion for engaging with the translation support platform (5). The surface of the translation support platform (5) is provided with multiple adjustment grooves (11) for adapting to the protrusions.

5. A flattening device for paper bag production according to claim 4, characterized in that: The adjustment groove (11) is distributed at equal intervals along the surface of the translation support platform (5) with the central axis of the groove as the reference, and the surface of the translation support platform (5) is engraved with a scale within the distribution range of the adjustment groove (11), and the vertical main board side of the second positioning plate (10) is in contact with the scale.

6. A flattening device for paper bag production according to claim 1, characterized in that: The surface of the push plate (8) is covered with silicone, and the end of the push plate (8) connected to the cylinder (7) is provided with two sets of telescopic sliding sleeves. The two sets of sleeves are symmetrically distributed on the left and right with the vertical center line of the cylinder (7) as the axis of symmetry. The sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is fixedly connected to the push plate (8), and one end of the outer sleeve is fixed to the base plate (1). The inner sleeve can slide along the cylinder (7) axis inside the outer sleeve. The bottom of the push plate (8) is a certain distance away from the surface of the translation support platform (5).

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