Continuous PP sheet distributing mechanism for organ bag inner container production

Abstract

The invention relates to the technical field of sheet distribution equipment, and discloses a PP sheet continuous distribution mechanism for organ bag liner production, comprising: a first conveying device for conveying groups of PP sheets; the second conveying device is used for conveying single PP sheets; the second taking and placing mechanism is configured to be capable of being switched between the first conveying device and the second conveying device; the PP sheets are sucked on the first conveying device in a single-sheet mode through the second taking and placing mechanism and placed on the second conveying device; the guide box is provided with an inlet and an outlet; the guide box can be switched between the horizontal state and the vertical state, in the horizontal state, an inlet of the guide box is in butt joint with a discharging opening of the second conveying device, and in the vertical state, an outlet of the guide box faces a sheet groove of the organ bag inner container forming equipment. And the PP sheet can be automatically inserted into the sheet groove, the production efficiency of the organ bag inner container is improved, the machining cost is reduced, and the personnel comfort degree during production operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sheet material distribution equipment, in particular to a PP sheet material continuous distribution mechanism for producing accordion bag inner liners. Background Art

[0002] The accordion bag liner comprises two side connecting sheets and a partition sheet group connected between the two side connecting sheets, wherein the partition sheet group consists of 12 to 24 sheets. In a single partition sheet group, the colors of the sheets can be the same or different.

[0003] During the production and molding process of the accordion bag liner, each sheet in the separation sheet group is mainly inserted one by one by the operators into a plurality of sheet slots distributed along the length direction of the accordion bag liner molding equipment, and when the sheets are inserted, the lines connecting the operators and the plurality of sheet slots are on the same straight line, so that as the number of sheets inserted increases, the distance from the operator to the nearest empty sheet slot also gradually increases, so that the operator needs to lean forward to put the sheet into the sheet slot far away from him, resulting in a decrease in the convenience of the operation as the number of sheets inserted into the sheet slot increases, and an increase in the labor intensity of the operation as the number of sheets inserted into the sheet slot increases, which in turn leads to low production efficiency and increased production costs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a PP sheet continuous dispensing mechanism for producing accordion bag liners, which can effectively solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PP sheet continuous dispensing mechanism for producing accordion bag liner, used to insert the PP sheet into the sheet slot in the accordion bag liner forming device, including a sheet sending mechanism; the sheet sending mechanism includes: A supply device, the supply device comprising at least one carrier, on which at least one PP sheet can be stacked; the sheets on the same carrier are arranged as a group; A first conveying device, used for conveying grouped PP sheets; A first pick-and-place mechanism, the first pick-and-place mechanism is configured to be able to switch between the supply device and the first conveying device to transfer the group of PP sheets to the first conveying device; The second conveying device is used to convey a single PP sheet; A second pick-and-place mechanism is configured to be able to switch between the first conveying device and the second conveying device; the second pick-and-place mechanism sucks the PP sheet on the first conveying device in a single piece and places the PP sheet on the second conveying device; The guide box has an inlet and an outlet, and the height of the inner cavity is set to gradually decrease from the inlet to the outlet; the guide box is configured to be able to switch between a horizontal state and a vertical state; in the horizontal state, the inlet of the guide box is connected to the unloading port of the second conveying device, so that the PP sheet can at least partially enter the guide box through the inlet under the conveyance of the second conveying device; in the vertical state, the outlet of the guide box faces the sheet groove.

[0006] Preferably, the sheet sending mechanism also includes a first drive device, a second drive device and a third drive device; the first drive device is used to drive the second pick-and-place mechanism to switch between the first conveying device and the second conveying device; during the movement of the second pick-and-place mechanism from the second conveying device to the first conveying device, the second drive device drives the second conveying device to move, so that the PP sheet enters the guide box entrance, and then the third drive device drives the guide box to switch from a horizontal state to a vertical state.

[0007] Preferably, the first driving device includes a driving shaft, a mounting mechanism and a track groove, the driving shaft is configured to be able to swing back and forth around its own central axis, the track groove is an inverted U-shaped groove, and the second pick-and-place mechanism is installed on the mounting mechanism; the driving shaft swings to drive the mounting mechanism to move along the track groove in a state parallel to the horizontal plane.

[0008] Preferably, the second driving device includes a guide plate, an arcuate rack, a gear shaft and a linear rack; the guide plate is fan-shaped and coaxially arranged with the driving shaft, and the arcuate rack is coaxially slidably sleeved on the end of the guide plate away from the driving shaft; the guide plate can swing with the driving shaft and can drive the arcuate rack to swing in the same direction; the gear shaft can engage with the arcuate rack and the linear rack; the linear rack is driven to move relative to the guide box by the rotation of the gear shaft.

[0009] Preferably, the center angle of the arc-shaped rack is smaller than the center angle of the guide plate; the second conveying device is a roller conveyor, and a driving gear is fixedly sleeved on a roller shaft of the roller conveyor, and the driving gear is meshed with the linear rack.

[0010] Preferably, the third driving device includes a rocking plate, a connecting rod, a driving column and a driving groove, one end of the connecting rod is rotatably connected to the rocking plate through an axis, and the other end of the connecting rod is fixedly connected to the driving column movably arranged in the driving groove, and the driving groove is opened on the linear rack and arranged along the moving direction of the linear rack.

[0011] Preferably, a shaft is provided below the entrance of the guide box, and a rocking plate is sleeved on the surface of the shaft and connected to the guide box; the rocking plate swings around the shaft to drive the guide box to switch between a horizontal state and a vertical state.

[0012] Preferably, it also includes a frame; the frame is used to support the sheet sending mechanism; the frame is configured to be able to slide relative to the accordion bag liner forming device in the length direction of the accordion bag liner forming device.

[0013] Compared with the prior art, the present invention provides a PP sheet continuous distribution mechanism for producing accordion bag liner, which has the following beneficial effects: 1. It can automatically and continuously insert PP sheets into the sheet slot, improve the production efficiency of the accordion bag liner, increase output, reduce processing costs, reduce manual operations, and reduce safety hazards of manual operations.

[0014] 2. The carrier for holding the PP sheets to be distributed is kept away from the accordion bag liner forming equipment when in use. The PP sheets to be distributed are placed on the carrier manually so that the operator can stay away from the accordion bag liner forming equipment, so that the heat from the accordion bag liner forming equipment can act less on the operator, thereby improving the comfort of personnel during production operations.

[0015] 3. The original manual insertion of PP sheets into the sheet slot is changed to manual placement of sheets on the carrier, which reduces the operator's operating difficulty, improves the operator's operating convenience, and can reduce the operator's training cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the present invention from another perspective; Figure 3 is a schematic structural diagram of a first driving device; Figure 4 is a structural schematic diagram of the installation mechanism; Figure 5 It is a schematic diagram of the relative position state of the auxiliary mounting frame and the main mounting frame; Figure 6 is a schematic diagram of another relative position state of the auxiliary mounting frame and the main mounting frame; Figure 7 A schematic diagram of the structure of a first driving device and a second driving device; Figure 8 is a schematic structural diagram of a third driving device and a second driving device; Fig. 9 It is a schematic diagram of the structure at the entrance of the guide box; Fig.10 It is a schematic diagram of the cooperation between the present invention and the accordion bag liner forming equipment.

[0017] Among them: 100, frame; 200, sheet sending mechanism; 300, accordion bag liner forming equipment; 400, sheet slot; 1, first conveying device; 2, second conveying device; 21, driving gear; 3, second pick-up and placement mechanism; 4, guide box; 41, first conveying roller; 42, second conveying roller; 421, shaft; 422, conveying wheel; 423, support plate; 424, support rod; 5, first driving device; 51, support plate; 511, track slot; 52, driving shaft; 53, swing arm; 54, slide; 55, installation mechanism; 551, main Mounting frame; 552, stud one; 553, stud two; 554, auxiliary mounting frame; 555, nut; 556, spring one; 557, spring two; 6, supply device; 61, carrier; 62, fourth drive device; 7, first pick-and-place mechanism; 8, second drive device; 81, guide plate; 82, arc-shaped rack; 83, gear shaft; 84, linear rack; 9, third drive device; 91, rocker plate; 92, connecting rod; 93, drive column; 94, drive slot; 10, connecting plate; 11, support; 12, limit block one; 13, limit block two. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 9 A PP sheet continuous distribution mechanism for producing accordion bag liner, used for inserting a specified number of PP sheets one by one into multiple sheet slots 400 of an accordion bag liner forming device 300, including a sheet sending mechanism 200 and a frame 100 for supporting the sheet sending mechanism 200, the frame 100 being configured to be able to slide relative to the accordion bag liner forming device 300 in the length direction of the accordion bag liner forming device 300, so that the distance between the frame 100 and the accordion bag liner forming device 300 can be adjusted, so that the sheet outlet of the sheet sending mechanism 200 can be moved toward sheet slots 400 at different positions, thereby achieving the effect of inserting PP sheets into sheet slots 400 at different positions.

[0020] The sheet sending mechanism 200 includes: A supply device 6 is used to supply PP sheets; the supply device 6 includes at least one carrier 61, on which at least one PP sheet can be stacked; the PP sheets on the same carrier 61 are arranged as a group; The first conveying device 1 is used to convey the grouped PP sheets; The second conveying device 2 is used to convey a single PP sheet; The first pick-and-place mechanism 7 is configured to be able to switch between the supply device 6 and the first conveying device 1 to transfer the grouped PP sheets to the first conveying device 1; The second pick-and-place mechanism 3 is configured to be able to switch between the first conveying device 1 and the second conveying device 2; the second pick-and-place mechanism 3 sucks the PP sheet on the first conveying device 1 in a single piece and places the PP sheet on the second conveying device 2; The guide box 4 has an inlet and an outlet, and the height of the inner cavity is set to be gradually reduced from the inlet to the outlet; the guide box 4 is configured to be able to switch between a horizontal state and a vertical state, and in the horizontal state, the inlet of the guide box 4 is docked with the unloading port of the second conveying device 2, so that the PP sheet can at least partially enter the guide box 4 through the inlet under the conveyance of the second conveying device 2; in the vertical state, the outlet of the guide box 4 faces the sheet slot 400; A first conveying roller 41 and a second conveying roller 42 are installed at the entrance of the guide box 4, and a gap is formed between the first conveying roller 41 and the second conveying roller 42; the first conveying roller 41 and the second conveying roller 42 are both configured to be able to rotate around their own central axis, and the rotation directions of the first conveying roller 41 and the second conveying roller 42 are opposite.

[0021] When in use, the carrier 61 carrying a group of PP sheets is moved to the upstream of the first conveying device 1, and then the group of PP sheets is moved to the first conveying device 1 through the first pick-and-place mechanism 7. The first conveying device 1 conveys the PP sheets to the picking station of the second pick-and-place mechanism 3. Then, the first conveying device 1 is stationary, and the second pick-and-place mechanism 3 moves to the picking station and absorbs a piece of PP sheet. After that, the second pick-and-place mechanism 3 moves to the unloading station and places the absorbed PP sheet flat on the second conveying device 2. Then, the first conveying roller 41 and the second conveying roller 42 rotate in opposite directions, and the second conveying device 2 conveys the PP sheet and allows at least part of the PP sheet to pass through the gap between the first conveying roller 41 and the second conveying roller 42 and enter the entrance of the guide box 4. The first conveying roller 41 and the second conveying roller 42 cooperate to convey the PP sheet to the exit of the guide box 4. Then, the guide box 4 swings downward so that the exit faces a sheet slot 400, and the PP sheet falls into the sheet slot 400 through the exit of the guide box 4.

[0022] The material picking station of the second picking and placing mechanism 3 is that the second picking and placing mechanism 3 is above the first conveying device 1 , and the material unloading station of the second picking and placing mechanism 3 is that the second picking and placing mechanism 3 is above the second conveying device 2 .

[0023] When the outlet of the guide box 4 faces the sheet slot 400, the cooperation between the guide box 4 and the accordion bag liner forming device 300 is as follows: Fig.10 shown.

[0024] The supply device 6 is located upstream of the first conveying device 1. The supply device 6 also includes a fourth driving device 62, which is used to drive the carrier 61 to move so that the carrier 61 can be switched between the upstream of the first conveying device 1 and the loading station of the carrier 61. At the loading station of the carrier 61, the grouped PP sheets are manually placed on the carrier 61.

[0025] In the specific implementation process, in order to improve the feeding efficiency of the grouped PP sheets, a plurality of carriers 61 are provided, and the plurality of carriers 61 can be evenly spaced vertically or evenly spaced horizontally. The fourth drive device 62 is a linear motor module, which is mounted on the frame 100. The moving end of the linear motor module is connected to and fixed to the plurality of carriers 61. The cooperation between the fourth drive device 62 and the plurality of carriers 61 evenly spaced vertically is as follows: Figure 1 As shown, the fourth driving device 62 drives the plurality of carriers 61 to move up and down, so that the plurality of carriers 61 move sequentially from the upper upstream of the first conveying device 1 to the upper upstream of the first conveying device 1. upstream.

[0026] It should be noted that, although the cooperation between the fourth driving device 62 and the plurality of carriers 61 evenly spaced horizontally is not shown in the figure, it can be derived based on common knowledge.

[0027] It should be noted that in order to further improve the loading efficiency of grouped PP sheets, in the specific implementation process, when multiple carriers 61 are evenly spaced up and down, two or more supply devices 6 can be provided, and the fourth driving devices 62 in the two or more supply devices 6 are horizontally slidably installed on the frame 100, and the two or more supply devices 6 slide successively to the upstream of the first conveying device 1.

[0028] The first conveying device 1 is a self-powered flat belt conveyor, the body of which is mounted on a frame 100 .

[0029] The second conveying device 2 is a non-powered roller conveyor. The body of the roller conveyor is installed on the frame 100. A driving gear 21 is fixedly sleeved on a roller shaft of the roller conveyor. The PP sheet is placed flat on the roller, and the rotation of the roller drives the PP sheet to move to the guide box 4.

[0030] The first pick-and-place mechanism 7 is a pneumatic gripper. The pneumatic gripper is installed on the frame 100 through a two-axis robot arm, and the two-axis robot arm drives the pneumatic gripper to move along the length direction of the first conveying device 1 (the conveying direction of the first conveying device 1) and along the width direction of the first conveying device 1. When the PP sheet on the carrier 61 is to be placed on the first conveying device 1, the pneumatic gripper first moves along the length direction of the first conveying device 1 to the carrier 61, clamps the PP sheet, and then moves along the length direction of the first conveying device 1 to the first conveying device 1, places the PP sheet on the first conveying device 1, and then moves along the width direction of the first conveying device 1 to the side of the PP sheet to provide a moving space for the PP sheet to be transported by the first conveying device 1.

[0031] There are multiple second pick-and-place mechanisms 3, and the multiple second pick-and-place mechanisms 3 are divided into two groups, the two groups of second pick-and-place mechanisms 3 are distributed along the width direction of the PP sheet (the conveying direction of the first conveying device 1), and the second pick-and-place mechanisms 3 in the same group are distributed along the length direction of the PP sheet (the direction perpendicular to the conveying direction of the first conveying device 1). The second pick-and-place mechanism 3 is a pneumatic suction pen.

[0032] In a specific implementation, at least two second pick-and-place mechanisms 3 are arranged as a group, and the plurality of second pick-and-place mechanisms 3 are distributed in a rectangular shape to absorb the PP sheet.

[0033] It also includes a first drive device 5, a second drive device 8 and a third drive device 9; the first drive device 5 is used to drive the second pick-and-place mechanism 3 to switch between the first conveying device 1 and the second conveying device 2; during the movement of the second pick-and-place mechanism 3 from the second conveying device 2 to the first conveying device 1, the second drive device 8 drives the roller on the roller conveyor to rotate through the driving gear 21, so that the PP sheet passes through the gap and enters the entrance of the guide box 4, and then the third drive device 9 drives the guide box 4 to switch from a horizontal state to a vertical state.

[0034] The first driving device 5 includes a support plate 51 fixedly mounted on one side of the frame 100, and an inverted U-shaped track groove 511 is opened on the support plate 51 located above the frame 100. A driving shaft 52 is rotatably mounted on the end of the support plate 51 away from the second conveying device 2, and the driving shaft 52 is configured to be able to swing back and forth around its own central axis. A swing arm 53 is fixed to the outer surface of the driving shaft 52, and a slide 54 is slidably mounted on the end of the support plate 51 toward the second conveying device 2. A portion of the slide 54 passes through the track groove 511 and is slidably set in the groove on the swing arm 53. A mounting mechanism 55 is fixedly mounted on the slide 54, and two sets of second pick-and-place mechanisms 3 are both mounted on the mounting mechanism 55.

[0035] The driving shaft 52 swings back and forth, driving the swing arm 53 to swing, causing the slide 54 to move back and forth along the track groove 511 , thereby realizing the switching of the second pick-and-place mechanism 3 between the first conveying device 1 and the second conveying device 2 .

[0036] The slide 54 is slidably mounted on the support plate 51 through the first slide rail, the first slider and the second slide rail. The first slide rail is horizontally fixed to one end of the support plate 51 facing the second conveying device 2, the first slide rail surface is slidably sleeved with the first slider, the first slider is slidably sleeved on the surface of the first slide rail, the second slide rail is vertically slidably mounted on the first slider, and the top end of the second slide rail is fixedly connected to the slide 54; through the structure set in this way, during the swinging process of the swing arm 53, the second slide rail moves in the horizontal direction and the vertical direction, the slide 54 moves along the track groove 511 in a vertical downward state, the installation mechanism 55 moves with the slide 54 in a state parallel to the horizontal plane, and the second pick-and-place mechanism 3 moves with the installation mechanism 55 in a state with the adsorption end facing vertically downward.

[0037] In order to prevent the PP sheet below the sucked PP sheet from being lifted when the second pick-and-place mechanism 3 sucks a single PP sheet, the mounting mechanism 55 includes a main mounting frame 551 and two auxiliary mounting frames 554. The main mounting frame 551 is connected and fixed to the slide 54. The upper end of the main mounting frame 551 is sunken and installed with a auxiliary mounting frame 554 on the side away from the guide box 4. Another auxiliary mounting frame 554 is installed on the other side of the upper end of the main mounting frame 551. Both auxiliary mounting frames 554 can move up and down relative to the main mounting frame 551, and the movement range of the auxiliary mounting frame 554 away from the guide box 4 is greater than the movement range of the other auxiliary mounting frame 554. A set of second pick-and-place mechanisms 3 is fixedly installed on the two auxiliary mounting frames 554.

[0038] Furthermore, two auxiliary mounting frames 554 are slidably mounted on stud one 552 and stud two 553 respectively; stud one 552 and stud two 553 are both fixed on the main mounting frame 551, and stud one 552 is close to the guide box 4; nuts 555 are screwed on the tops of stud one 552 and stud two 553; a spring one 556 is mounted on the surface of stud one 552 between the nut 555 and the auxiliary mounting frame 554, and a spring two 557 is mounted on the surface of stud two 553 between the nut 555 and the auxiliary mounting frame 554, and spring two 557 is more susceptible to elastic deformation than spring one 556.

[0039] By setting the mounting mechanism 55 as above, when there is no PP sheet on the second pick-and-place mechanism 3, the two auxiliary mounting frames 554 are both against the upper surface of the main mounting frame 551, and the plane where the lower surface of one group of second pick-and-place mechanisms 3 away from the guide box 4 is located is located below the plane where the lower surface of the other group of second pick-and-place mechanisms 3 is located. Figure 5 shown.

[0040] Therefore, when the two sets of second pick-and-place mechanisms 3 approach each other from top to bottom, the set of second pick-and-place mechanisms 3 away from the guide box 4 first contacts the upper surface of the PP sheet, and then the other set of second pick-and-place mechanisms 3 contacts the upper surface of the PP sheet. At this time, a gap is formed between the auxiliary mounting frame 554 away from the guide box 4 and the main mounting frame 551, as shown in FIG. Figure 6 In the process of sucking and moving the PP sheet, a group of second pick-and-place mechanisms 3 close to the guide box 4 absorbs the PP sheet, and then the main mounting frame 551 moves up to carry the PP sheet, and a group of second pick-and-place mechanisms 3 close to the guide box 4 moves up first, and a group of second pick-and-place mechanisms 3 far from the guide box 4 remain in basically unchanged position, so that the end of the PP sheet close to the guide box 4 is tilted to a certain extent, and then a group of second pick-and-place mechanisms 3 far from the guide box 4 absorbs the PP sheet, and the main mounting frame 551 continues to move, and the second pick-and-place mechanisms 3 and the PP sheet are moved to the top of the second conveying device 2.

[0041] It should be noted that, when the PP sheet on the first conveying device 1 is not placed in a single piece but is stacked up and down by multiple pieces, the distance from each PP sheet to the first conveying device 1 decreases from top to bottom; since the distance from each secondary main mounting frame 551 to the first conveying device 1 is the same during the continuous multiple adsorption of PP sheets, therefore, when a PP sheet is adsorbed from the multiple PP sheets stacked up and down, the two sets of second picking and placing mechanisms 3 will move up to compress spring 1 556 and spring 2 557, and the upward movement amount of the second picking and placing mechanism 3 decreases as the distance from the PP sheet to the first conveying device 1 decreases.

[0042] By means of the installation mechanism 55 arranged as above, the PP sheet conveyed on the first conveying device 1, whether conveyed in a single sheet form or in a stacked state of multiple sheets, can be effectively adsorbed in a single sheet form by the second picking and placing mechanism 3, thereby avoiding the problem of the PP sheet that is not adsorbed moving up with the adsorbed PP sheet in a stacked state of multiple sheets.

[0043] like Figure 7 and Figure 8 As shown, the second driving device 8 includes a guide plate 81, an arcuate rack 82, a gear shaft 83 and a linear rack 84; the guide plate 81 is fan-shaped, fixed on the swing arm 53 and coaxial with the driving shaft 52, the arcuate rack 82 is coaxially slidably sleeved on the guide plate 81 at one end away from the driving shaft 52, the center angle of the arcuate rack 82 is smaller than the center angle of the guide plate 81, and the guide plate 81 can drive the arcuate rack 82 to swing in the same direction during the swinging process with the driving shaft 52, the gear shaft 83 is rotatably installed on the frame 100, and the gear shaft 83 can engage with the arcuate rack 82 and the linear rack 84; when the arcuate rack 82 swings, it can drive the gear shaft 83 to rotate around its own central axis; the linear rack 84 is driven to move in the horizontal direction relative to the guide box 4 through the rotation of the gear shaft 83.

[0044] When the swing arm 53 swings toward the side of the first conveying device 1, the guide plate 81 swings toward the side of the guide box 4, and drives the gear shaft 83 to rotate through the arc-shaped rack 82, so that the linear rack 84 moves horizontally toward the guide box 4. Conversely, when the swing arm 53 swings toward the side of the second conveying device 2, the linear rack 84 moves horizontally away from the guide box 4.

[0045] The linear rack 84 is slidably mounted on the support plate 51 at one end facing the second conveying device 2, and the linear rack 84 is also engaged with the driving gear 21; by moving the linear rack 84 toward the guide box 4, the driving gear 21 rotates, causing the roller in the second conveying device 2 to rotate, and the PP sheet is fed into the guide box 4.

[0046] It should be noted that the linear rack 84 is formed by connecting two parallel racks, one rack is meshed with the gear shaft 83 , and the other rack is meshed with the driving gear 21 .

[0047] like Figure 8 and Fig. 9 As shown, the third driving device 9 includes a rocking plate 91, a connecting rod 92, a driving column 93 and a driving groove 94. One end of the connecting rod 92 is rotatably connected to the rocking plate 91 through a shaft, and the other end of the connecting rod 92 is connected and fixed to the driving column 93 movably arranged in the driving groove 94. The driving groove 94 is provided on the linear rack 84 and is arranged along the moving direction of the linear rack 84. When the linear rack 84 moves toward the guide box 4, the linear rack 84 first moves relative to the driving column 93 by means of the driving groove 94, until the linear rack 84 applies a thrust to the driving column 93, drives the driving column 93 to move, pushes the connecting rod 92 to move, and makes the rocking plate 91 swing toward the guide box 4; conversely, when the linear rack 84 moves toward the side away from the guide box 4, the linear rack 84 first moves relative to the driving column 93, and then drives the driving column 93 to move, so that the rocking plate 91 swings toward the side away from the guide box 4.

[0048] Furthermore, the first conveyor roller 41 is a cylindrical structure with small ends and large middle. The second conveyor roller 42 includes a shaft 421 and a conveyor wheel 422 fixedly sleeved on the outer circumference of the shaft 421. A connecting plate 10 is movably sleeved on both end surfaces of the shaft 421, the first conveyor roller 41 is arranged between the two connecting plates 10, and the two ends of the first conveyor roller 41 respectively penetrate and rotatably connect a connecting plate 10. The first conveyor roller 41 is driven to rotate by a driver (such as a motor) installed on a connecting plate 10, and the first conveyor roller 41 and the shaft 421 are connected together through a gear transmission mechanism. The outer circumference of the first conveyor roller 41 with a larger diameter is configured to be tangent to the plane where the upper surface of the PP sheet is located, and the outer circumference of the conveyor wheel 422 is configured to be tangent to the plane where the lower surface of the PP sheet is located, so that the PP sheet can be effectively conveyed when the first conveyor roller 41 and the conveyor wheel 422 rotate in opposite directions.

[0049] A support 11 is movably mounted on the surfaces of both ends of the shaft 421, and both supports 11 are fixed on the frame 100. A limit block 12 and a limit block 2 13 are fixed on the support 11 on the same side as the rocking plate 91; the rocking plate 91 is movably mounted on the first conveying roller 41 and the shaft 421, and is located between the limit block 12 and the limit block 2 13, and the rocking plate 91 can swing around the central axis of the shaft 421.

[0050] The limit block 12 is used to limit the rocking plate 91 after the guide box 4 rotates to a horizontal state, and the limit block 2 13 is used to limit the rocking plate 91 after the guide box 4 rotates to a vertical state.

[0051] The guide box 4 is fixed on two connecting plates 10 .

[0052] By swinging the rocker plate 91 around the central axis of the shaft 421, the shaft 421 and the first conveying roller 41 are driven to swing, and the two connecting plates 10 are swung, so that the guide box 4 swings around the central axis of the shaft 421, and the guide box 4 is switched between the horizontal state and the vertical state.

[0053] In order to keep the PP sheet outside the guide box 4 in a flat or relatively flat state during the switching of the guide box 4 from a horizontal state to a vertical state, a support plate 423 is movably sleeved on the surface of the shaft 421. The support plate 423 is used to lift the PP sheet. A support rod 424 is installed through the support plate 423. The support rod 424 is connected to the fixed connecting plate 10. Fig. 9 shown.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PP sheet continuous distribution mechanism for producing accordion bag liners, used for inserting PP sheets into a sheet slot (400) in an accordion bag liners forming device (300), comprising a sheet sending mechanism (200), characterized in that: The sheet material sending mechanism (200) comprises: A supply device (6), the supply device (6) comprising at least one carrier (61), on which at least one PP sheet can be stacked; the sheets on the same carrier (61) are arranged as a group; A first conveying device (1) is used to convey groups of PP sheets; A first pick-and-place mechanism (7), the first pick-and-place mechanism (7) being configured to be switchable between the supply device (6) and the first conveying device (1) so as to transfer the group of PP sheets to the first conveying device (1); A second conveying device (2) is used to convey a single PP sheet; A second pick-and-place mechanism (3) is configured to be able to switch between the first conveying device (1) and the second conveying device (2); the second pick-and-place mechanism (3) sucks the PP sheet in the form of a single piece on the first conveying device (1) and places the PP sheet on the second conveying device (2); The guide box (4) has an inlet and an outlet, and the height of the inner cavity is arranged to gradually decrease from the inlet to the outlet; the guide box (4) is configured to be switchable between a horizontal state and a vertical state; in the horizontal state, the inlet of the guide box (4) is docked with the unloading port of the second conveying device (2), so that the PP sheet can at least partially enter the guide box (4) through the inlet under the conveyance of the second conveying device (2); in the vertical state, the outlet of the guide box (4) faces the sheet slot (400).

2. The PP sheet continuous distribution mechanism for producing accordion bag liners according to claim 1, characterized in that: The sheet sending mechanism (200) further comprises a first driving device (5), a second driving device (8) and a third driving device (9); the first driving device (5) is used to drive the second pick-and-place mechanism (3) to switch between the first conveying device (1) and the second conveying device (2); during the movement of the second pick-and-place mechanism (3) from the second conveying device (2) to the first conveying device (1), the second driving device (8) drives the second conveying device (2) to move so that the PP sheet enters the entrance of the guide box (4), and then the third driving device (9) drives the guide box (4) to switch from a horizontal state to a vertical state.

3. The PP sheet continuous distribution mechanism for producing accordion bag liners according to claim 2, characterized in that: The first driving device (5) comprises a driving shaft (52), a mounting mechanism (55) and a track groove (511); the driving shaft (52) is configured to be able to swing back and forth around its own central axis; the track groove (511) is an inverted U-shaped groove; and the second pick-and-place mechanism (3) is mounted on the mounting mechanism (55); the driving shaft (52) swings to drive the mounting mechanism (55) to move along the track groove (511) in a state parallel to a horizontal plane.

4. The PP sheet continuous distribution mechanism for producing accordion bag liners according to claim 3, characterized in that: The second driving device (8) comprises a guide plate (81), an arcuate rack (82), a gear shaft (83) and a linear rack (84); the guide plate (81) is fan-shaped and is coaxially arranged with the driving shaft (52); the arcuate rack (82) is coaxially slidably sleeved on the end of the guide plate (81) away from the driving shaft (52); the guide plate (81) can swing with the driving shaft (52) and can drive the arcuate rack (82) to swing in the same direction; the gear shaft (83) can mesh with the arcuate rack (82) and the linear rack (84); and the linear rack (84) is driven to move relative to the guide box (4) by the rotation of the gear shaft (83).

5. The PP sheet continuous dispensing mechanism for producing accordion bag liners according to claim 4, characterized in that: The center angle of the arc-shaped rack (82) is smaller than the center angle of the guide plate (81); the second conveying device (2) is a roller conveyor, and a driving gear (21) is fixedly sleeved on a roller shaft of the roller conveyor, and the driving gear (21) is meshed with the linear rack (84).

6. The PP sheet continuous distribution mechanism for producing accordion bag liners according to claim 5, characterized in that: The third driving device (9) comprises a rocking plate (91), a connecting rod (92), a driving column (93) and a driving groove (94); one end of the connecting rod (92) is rotatably connected to the rocking plate (91) via a shaft; the other end of the connecting rod (92) is fixedly connected to a driving column (93) movably arranged in the driving groove (94); and the driving groove (94) is formed on the linear rack (84) and is arranged along the moving direction of the linear rack (84).

7. The PP sheet continuous dispensing mechanism for producing accordion bag liners according to claim 6, characterized in that: A shaft (421) is provided below the entrance of the guide box (4); a rocker plate (91) is sleeved on the surface of the shaft (421) and is connected to the guide box (4); the rocker plate (91) swings around the shaft (421) to drive the guide box (4) to switch between a horizontal state and a vertical state.

8. The PP sheet continuous dispensing mechanism for producing accordion bag liners according to claim 7, characterized in that: It also includes a frame (100); the frame (100) is used to support the sheet sending mechanism (200); the frame (100) is configured to be able to slide relative to the accordion bag liner forming device (300) in the length direction of the accordion bag liner forming device (300).

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