Single-face punching device for plastic packaging bag

Abstract

The utility model relates to the field of packaging bag punching, in particular to a plastic packaging bag single-face punching device which solves the problems that manual punching wastes time and labor, and punching accuracy and consistency are difficult to guarantee. The plastic packaging bag single-face punching device comprises a bottom plate, a shell is arranged on the left portion of the bottom plate, two U-shaped plates are arranged in the shell, cylinder bodies are arranged on the U-shaped plates, and pistons and pull rods are slidably connected into the cylinder bodies; a U-shaped plate is arranged at the left end of the shell, a pressing plate is vertically and slidably connected to the U-shaped plate, two connecting cylinders and a suction cup are arranged on the pressing plate, the bottom of the cylinder body is connected with the connecting cylinders through air pipes, a T-shaped plate is arranged at the left end of the shell, and a cylindrical blade is slidably connected to the U-shaped plate; the bottom plate and the right portion of the shell are rotationally connected with flat plates, a guide column is arranged between the two flat plates, a tray is slidably connected to the guide column, and a transverse rod is arranged at the right end of the bottom plate. The plastic packaging bag single-face punching device can replace workers to automatically complete single-face punching operation of plastic packaging bags, the single-face punching efficiency is improved, hole position deviation can be prevented, and the punching quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag punching, and in particular to a single-side punching device for a plastic packaging bag. Background Art

[0002] Punching holes on one side of plastic packaging bags is a common packaging method. Plastic packaging bags with holes on one side allow the items in the package to breathe, which helps to maintain the freshness of the items in the package and effectively extend the shelf life of the goods. This breathability is particularly important for fresh vegetables, fruits and other perishable items. Since only one side is perforated, it can effectively prevent the goods from getting damp due to humid weather and other reasons. This design allows the packaging bag to keep the internal items dry even in a humid environment. Compared with plastic packaging bags with holes on both sides, packaging bags with holes on one side are better in terms of freshness. This is because perforating on one side can better control the amount of air permeability and avoid drying or deterioration of goods caused by excessive air permeability.

[0003] Existing punching devices are generally manual or semi-automatic, and operators need to have certain skills and experience to ensure the accuracy and consistency of punching. In addition, operators need to control the depth of the holes when punching to avoid punching through the plastic packaging bag, which is time-consuming and labor-intensive, and the punching efficiency is low. In addition, improper operation may cause the position of the holes to shift, making it difficult to ensure the accuracy and consistency of the punching.

[0004] Therefore, the present invention provides a single-side perforating device for a plastic packaging bag to solve the above-mentioned problem. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a single-sided punching device for plastic packaging bags to solve the above-mentioned problem that manual punching is time-consuming and labor-intensive and it is difficult to ensure the accuracy and consistency of the punching.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A single-sided perforating device for a plastic packaging bag comprises a bottom plate, a shell penetrating from left to right is provided on the left portion of the bottom plate, U-shaped plates are provided at the upper and lower portions of the shell, the upper and lower openings of the two U-shaped plates are opposite to each other, a cylinder body with an upper and lower axial direction is provided at the center of the horizontal portion of the U-shaped plate, a piston is slidably connected to the cylinder body, a pull rod with an upper and lower axial direction and penetrating the U-shaped plate is provided on the piston, the moving directions of the two pull rods are opposite, two air pipes opposite to each other are provided at the bottom of the cylinder body, a pressing plate is vertically slidably connected to the vertical portion of the U-shaped plate, the moving directions of the two pressing plates are opposite, and the pressing plate The movement is offset with the pull rod, and the front and rear parts of the pressure plate are both provided with upper and lower axial connecting tubes, and the opposite ends of the two upper and lower connecting tubes are provided with suction cups, and the other end of the connecting tube is connected to the free end of the air pipe on the corresponding side. A T-type plate is horizontally arranged at the left end of the shell, and the T-type plate is driven by two left and right axial cylinders. The horizontal part of the T-type plate can move between the suction cups on the upper and lower sides, and the upper U-shaped plate is slidably connected with an upper and lower axial cylindrical rod, which can move with the movement of the T-shaped plate, and a cylindrical blade is coaxially arranged at the lower end of the cylindrical rod;

[0008] The bottom plate and the right part of the shell are both rotatably connected with the upper and lower axial rotating shafts, the upper rotating shaft is driven by an intermittent mechanism, flat plates are provided at the opposite ends of the two rotating shafts, two guide columns which are axially connected to the upper and lower axes and opposite to each other left and right are provided between the two flat plates, sleeves are slidably connected to the guide columns, the two sleeves are provided with horizontal plates in the left and right directions at the opposite ends, a tray is provided on the horizontal plate, the tray can be rotated between the suction cups on the upper and lower sides, two through grooves which are opposite to each other front to back and in the left and right directions are provided on the horizontal part of the tray, a fixing plate is vertically provided at the right end of the bottom plate, two cross bars which are opposite to each other front to back and in the left and right directions are provided on the fixing plate, and both the cross bars and the suction cups can pass through the through grooves.

[0009] Preferably, the front end of the U-shaped plate is vertically slidably connected to an L-shaped plate, the horizontal portion of the L-shaped plate is fixedly connected to the pull rod on the corresponding side, the vertical portion of the L-shaped plate is provided with a first plug post in the front-to-rear axial direction, and the upper and lower portions in the shell are both laterally slidably connected with vertical plates in the left and right directions, the two vertical plates are fixedly connected by a pull plate, the pull plate is driven by a driving mechanism, the opposite ends of the two vertical plates are provided with Z-grooves that pass through front and back, the two Z-grooves are symmetrical up and down, the first plug post is located in the Z-groove on the corresponding side, when the driving mechanism drives the pull plate to move to the right, the pull plate drives the two vertical plates to move to the right together, the Z-groove moves to the right with the vertical plate, the position of the first plug post in the Z-groove changes, when the first plug post moves to the inclined portion of the Z-groove, the first plug post starts to move up and down, and because the two Z-grooves are symmetrical up and down, the Z-groove drives the two first plug posts to move in opposite directions and gradually separate.

[0010] Preferably, the driving mechanism includes a first motor in the front-to-back axial direction, the first motor is fixedly connected to the shell, and the output end of the first motor is provided with a turntable located on the right side of the pull plate and in the front-to-back axial direction, a connecting rod is hinged at the left end of the turntable, and the free end of the connecting rod is hingedly connected to the pressure plate. When the first motor rotates, the first motor can drive the turntable to rotate, the turntable drives the pull rod to rotate, and the pull rod can drive the pull plate to reciprocate left and right.

[0011] Preferably, a connecting plate is provided at the front end of the pressure plate, and the front end of the connecting plate bypasses the U-shaped plate and is provided with a second plug column in the front-to-back axial direction. The opposite ends of the two vertical plates are provided with V-shaped grooves that pass through the front and back, and the middle part of the V-shaped groove is horizontal. The two V-shaped grooves are symmetrical up and down, and the second plug column is located in the V-shaped groove on the corresponding side. When the vertical plate moves, it can drive the V-shaped groove to move, and the position of the second plug column in the V-shaped groove changes. When the second plug column is located at the inclined part of the V-shaped groove, the V-shaped groove drives the two second plug columns to move in relative directions, and the two second plug columns gradually approach each other, and when the second plug column is located at the inclined part of the V-shaped groove, the first plug column is located at the horizontal part of the Z-shaped groove, and when the second plug column is located at the horizontal part of the V-shaped groove, the first plug column is located at the inclined part of the Z-shaped groove, so that the movement of the pressure plate and the pull rod is staggered.

[0012] Preferably, the vertical portion of the T-plate is provided with a first inclined block in the left and right directions, and a second inclined block is provided at the upper end of the cylindrical rod. The inclined surface on the first inclined block can contact the inclined surface on the second inclined block. The cylindrical rod is provided with a compression spring located between the second inclined block and the U-shaped plate. The compression spring always drives the cylindrical blade close to the upper U-shaped plate. When the two cylinders drive the T-plate to move to the right, the first inclined block moves to the right with the T-plate until the inclined surface on the first inclined block contacts the inclined surface on the second inclined block. The first inclined block starts to drive the second inclined block to move downward, and the second inclined block drives the cylindrical blade to move downward through the cylindrical rod. When the first inclined block is no longer in contact with the second inclined block, the compression spring can drive the second inclined block back to its initial position.

[0013] Preferably, the intermittent mechanism includes a second motor located on the left side of the rotating shaft and in an up-and-down axial direction, the second motor is fixedly connected to the upper side wall of the shell, a dial wheel is provided at the output end of the second motor, a notch is provided at the left end of the dial wheel, a lever in the left and right directions is provided at the lower end of the dial wheel, a cylindrical block in the up-and-down axial direction is provided at the free end of the lever, a groove wheel is provided in the middle part of the upper rotating shaft, four give-way grooves evenly distributed along its circumferential direction are opened on the groove wheel, the give-way grooves are distributed along the radial direction of the groove wheel, the cylindrical block can rotate into the give-way groove, when the second motor rotates, the second motor drives the dial wheel to rotate, the dial wheel drives the lever and the cylindrical block to rotate, when the cylindrical block rotates into the give-way groove, the protruding part of the groove wheel is located at the notch of the dial wheel, the cylindrical block starts to drive the groove wheel to rotate, and the cylindrical block rotates four times to drive the groove wheel to rotate one week.

[0014] Preferably, an outer cylinder coaxial with the rotating shaft is provided on the bottom plate, and the two guide columns are located inside the outer cylinder. A trapezoidal groove which is wider at the top and narrower at the bottom is provided on the right part of the outer cylinder. The lower end of the cross plate contacts the retaining frame on the upper surface of the outer cylinder. When the through groove on the tray is opposite to the cross bar up and down, the cross plate rotates into the trapezoidal groove, and the cross bar passes through the through groove on the corresponding side. When the through groove on the tray is opposite to the suction cup up and down, the suction cup on the lower side can pass through the through groove on the corresponding side upward.

[0015] Preferably, the guide column is sleeved with a return spring located between the sleeve and the upper plate, and the return spring always drives the sleeve close to the lower plate, so that the lower end of the cross plate contacts the retaining frame on the upper surface of the outer cylinder.

[0016] Preferably, the vertical portion of the U-shaped plate is provided with guide rails in the up and down directions, and sliders adapted to the guide rails are provided at the front and rear ends of the pressure plate. The sliders are slidably connected to the guide rails on the corresponding sides. When the pressure plate moves up and down, the pressure plate drives the sliders to slide up and down along the guide rails, and the guide rails and the sliders can limit the sliding direction of the pressure plate to the vertical direction.

[0017] Preferably, the outer surface of the guide column is provided with a plurality of guide grooves evenly distributed along its circumferential direction, and the inner surface of the sleeve is provided with a plurality of guide blocks corresponding to the guide grooves one by one, and the guide blocks are slidably connected to the guide grooves on the corresponding sides. When the sleeve slides up and down, the sleeve drives the guide blocks to slide up and down along the guide grooves, and the guide blocks are always located in the guide grooves, which can prevent relative rotation between the sleeve and the guide column.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention is provided with a plurality of suction cups facing each other up and down, which can open the opening of the plastic packaging bag to facilitate the entry of the horizontal part of the T-shaped plate. The T-shaped plate can drive the cylindrical blade to move downward while entering the bag body, thereby performing single-sided punching on the plastic packaging bag. The T-shaped plate can prevent the cylindrical blade from punching through the plastic packaging bag. The single-sided punching operation is performed automatically, replacing the staff for punching, reducing the overall workload of the staff, solving the problem of time-consuming and labor-intensive punching by the staff, and significantly improving the efficiency of single-sided punching, thereby being suitable for large-scale punching operations.

[0020] 2. The intermittent mechanism provided in the present invention can drive the tray to rotate intermittently, thereby driving the plastic packaging bag to move between the suction cups on the upper and lower sides through the tray. Automatic loading can be achieved through the cooperation of the conveying equipment, reducing the use of manpower. A barrier is provided on the upper end of the tray to prevent the plastic packaging bag from shifting during the punching process, thereby ensuring the accuracy and consistency of the punching, preventing the hole position from shifting, and improving the quality of the punching.

[0021] 3. The present invention is provided with an outer cylinder and a cross bar. When the tray moves to the top of the cross bar, it automatically moves downward, so that the cross bar passes through the through slot from bottom to top, thereby taking out the punched plastic packaging bags in the tray, which is convenient for the staff to carry out subsequent processing, brings convenience to the staff and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a main axonometric schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the main stepped section axonometric view of the present invention.

[0024] Figure 3 It is a left axonometric schematic diagram of the present invention.

[0025] Figure 4 It is a left-side cutaway axonometric schematic diagram of the present invention.

[0026] Figure 5 It is a front view cutaway axonometric schematic diagram of the present invention.

[0027] Figure 6 It is a top axonometric schematic diagram of the present invention.

[0028] Figure 7 It is a top view cutaway axonometric schematic diagram of the present invention.

[0029] Figure 8 It is a top axonometric schematic diagram of the outer cylinder and the guide column in the present invention.

[0030] Fig. 9 It is a left axonometric schematic diagram of the outer cylinder and the guide column in the present invention.

[0031] Fig.10 It is a bottom-up axonometric schematic diagram of the cylindrical blade in the present invention.

[0032] Fig.11 For the present invention Figure 2 Enlarged schematic diagram of part A.

[0033] Fig.12 For the present invention Figure 8 Schematic diagram of the enlarged portion B.

[0034] In the figure: 1, bottom plate; 2, shell; 3, U-shaped plate; 4, cylinder; 5, piston; 6, pull rod; 7, air pipe; 8, pressure plate; 9, connecting tube; 10, suction cup; 11, T-shaped plate; 12, cylinder; 13, cylindrical rod; 14, cylindrical blade; 15, rotating shaft; 16, flat plate; 17, guide column; 18, sleeve; 19, horizontal plate; 20, tray; 21, through groove; 22, fixed plate; 23, horizontal rod; 24, L-shaped plate; 25, first plug column; 26, vertical plate; 27, Z-shaped groove; 28, first electric machine; 29, turntable; 30, connecting rod; 31, connecting plate; 32, second plug column; 33, V-shaped groove; 34, first inclined block; 35, second inclined block; 36, compression spring; 37, second motor; 38, dial wheel; 39, dial rod; 40, cylindrical block; 41, groove wheel; 42, give way groove; 43, outer cylinder; 44, trapezoidal groove; 45, reset spring; 46, guide rail; 47, slider; 48, guide groove; 49, guide block; 50, pull plate. DETAILED DESCRIPTION

[0035] The following will refer to the attached Figures 1 to 12 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] A single-side punching device for plastic packaging bags, as shown in the attached Figures 1 to 11 As shown, it includes a bottom plate 1, a shell 2 that penetrates left and right is provided on the left part of the bottom plate 1, and U-shaped plates 3 are provided at the upper and lower parts of the shell 2. The upper and lower openings of the two U-shaped plates 3 are opposite to each other. A cylinder body 4 with an upper and lower axial direction is provided at the center of the horizontal part of the U-shaped plate 3. A piston 5 is slidably connected in the cylinder body 4. A pull rod 6 with an upper and lower axial direction and penetrating the U-shaped plate 3 is provided on the piston 5. The moving directions of the two pull rods 6 are opposite. Two front-to-back opposite air pipes 7 are provided at the bottom of the cylinder body 4. A pressure plate 8 is vertically slidably connected to the vertical part of the U-shaped plate 3. The moving directions of the two pressure plates 8 are opposite, and the movement of the pressure plate 8 and the pull rod 6 is offset. The front and rear parts of the pressing plate 8 are both provided with upper and lower axial connecting tubes 9, and the opposite ends of the two upper and lower connecting tubes 9 are both provided with suction cups 10, and the other end of the connecting tube 9 is connected to the free end of the air pipe 7 on the corresponding side, and a T-shaped plate 11 is transversely arranged at the left end of the shell 2, and the T-shaped plate 11 is driven by two left and right axial cylinders 12, and the horizontal part of the T-shaped plate 11 can move between the suction cups 10 on the upper and lower sides, and a cylindrical rod 13 with an upper and lower axial direction is slidably connected to the U-shaped plate 3 on the upper side, and the cylindrical rod 13 can move with the movement of the T-shaped plate 11, and a cylindrical blade 14 is coaxially arranged at the lower end of the cylindrical rod 13;

[0037] The bottom plate 1 and the right part of the shell 2 are both rotatably connected with an up-and-down axial rotating shaft 15, the upper rotating shaft 15 is driven by an intermittent mechanism, and the opposite ends of the two rotating shafts 15 are provided with flat plates 16, and two up-and-down axial and left-and-right opposite guide columns 17 are provided between the two flat plates 16, and a sleeve 18 is slidably connected to the guide column 17, and the opposite ends of the two sleeves 18 are provided with left-and-right horizontal plates 19, and a tray 20 is provided on the horizontal plate 19, and the tray 20 can be rotated between the suction cups 10 on the upper and lower sides, and two front-to-back and left-to-right through grooves 21 are provided in the horizontal part of the tray 20, and a fixing plate 22 is vertically provided at the right end of the bottom plate 1, and two left-and-right and front-to-back opposite cross bars 23 are provided on the fixing plate 22, and the cross bars 23 and the suction cups 10 can both pass through the through grooves 21.

[0038] As attached Figure 4 and Figure 5 As shown, the front end of the U-shaped plate 3 is vertically slidably connected with an L-shaped plate 24, the horizontal part of the L-shaped plate 24 is fixedly connected to the pull rod 6 on the corresponding side, and the vertical part of the L-shaped plate 24 is provided with a first plug column 25 in the front and rear axial direction. The upper and lower parts of the shell 2 are both horizontally slidably connected with vertical plates 26 in the left and right directions. The two vertical plates 26 are fixedly connected by a pull plate 50, and the pull plate 50 is driven by a driving mechanism. The opposite ends of the two vertical plates 26 are provided with a front-to-back through Z-shaped grooves 27, and the two Z-shaped grooves 27 are symmetrical up and down. The first plug column 25 is provided with a first plug column 25 in the front and rear axial direction. The column 25 is located in the Z-shaped groove 27 on the corresponding side. When the driving mechanism drives the pull plate 50 to move to the right, the pull plate 50 drives the two vertical plates 26 to move to the right together. The Z-shaped groove 27 moves to the right with the vertical plate 26, and the position of the first plug column 25 in the Z-shaped groove 27 changes. When the first plug column 25 moves to the inclined part of the Z-shaped groove 27, the first plug column 25 starts to move up and down. Since the two Z-shaped grooves 27 are symmetrical up and down, the Z-shaped groove 27 drives the two first plug columns 25 to move in opposite directions and gradually separate.

[0039] As attached Figure 5 and Figure 7 As shown, the driving mechanism includes a first motor 28 in the front-to-back axial direction, the first motor 28 is fixedly connected to the shell 2, and the output end of the first motor 28 is provided with a turntable 29 located on the right side of the pull plate 50 and in the front-to-back axial direction, a connecting rod 30 is hinged at the left end of the turntable 29, and the free end of the connecting rod 30 is hingedly connected to the pressure plate 8. When the first motor 28 rotates, the first motor 28 can drive the turntable 29 to rotate, the turntable 29 drives the pull rod 6 to rotate, and the pull rod 6 can drive the pull plate 50 to reciprocate left and right.

[0040] As attached Figure 4 and Figure 5As shown, the front end of the pressure plate 8 is provided with a connecting plate 31, the front end of the connecting plate 31 bypasses the U-shaped plate 3 and is provided with a second plug column 32 in the front and rear axial direction, the opposite ends of the two vertical plates 26 are provided with a front-to-back through V-shaped grooves 33, the middle part of the V-shaped groove 33 is horizontal, the two V-shaped grooves 33 are symmetrical up and down, the second plug column 32 is located in the V-shaped groove 33 on the corresponding side, and the vertical plate 26 can drive the V-shaped groove 33 to move when it moves, and the position of the second plug column 32 in the V-shaped groove 33 changes. When the second plug column 32 is located at the inclined part of the V-shaped groove 33, the V-shaped groove 33 drives the two second plug columns 32 to move in relative directions, and the two second plug columns 32 gradually approach each other, and when the second plug column 32 is located at the inclined part of the V-shaped groove 33, the first plug column 25 is located at the horizontal part of the Z-shaped groove 27, and when the second plug column 32 is located at the horizontal part of the V-shaped groove 33, the first plug column 25 is located at the inclined part of the Z-shaped groove 27, so that the movement of the pressure plate 8 and the pull rod 6 is staggered.

[0041] As attached Figure 2 , Figure 3 and Fig.11 As shown, the vertical part of the T-plate 11 is provided with a first inclined block 34 in the left and right directions, and a second inclined block 35 is provided at the upper end of the cylindrical rod 13. The inclined surface on the first inclined block 34 can contact the inclined surface on the second inclined block 35. The cylindrical rod 13 is provided with a compression spring 36 located between the second inclined block 35 and the U-shaped plate 3. The compression spring 36 always drives the cylindrical blade 14 close to the upper U-shaped plate 3. When the two cylinders 12 drive the T-plate 11 to move to the right, the first inclined block 34 moves to the right with the T-plate 11 until the inclined surface on the first inclined block 34 contacts the inclined surface on the second inclined block 35. The first inclined block 34 starts to drive the second inclined block 35 to move downward. The second inclined block 35 drives the cylindrical blade to move downward through the cylindrical rod 13. When the first inclined block 34 is not in contact with the second inclined block 35, the compression spring 36 can drive the second inclined block 35 back to the initial position.

[0042] As attached Figure 1 , Figure 2 and Figure 7As shown, the intermittent mechanism includes a second motor 37 located on the left side of the rotating shaft 15 and in the vertical axial direction. The second motor 37 is fixedly connected to the upper side wall of the housing 2. A dial wheel 38 is provided at the output end of the second motor 37. A notch is provided at the left end of the dial wheel 38. A lever 39 in the left and right directions is provided at the lower end of the dial wheel 38. A cylindrical block 40 in the vertical axial direction is provided at the free end of the lever 39. A groove wheel 41 is provided in the middle of the rotating shaft 15 on the upper side. Four make-way grooves 42 are evenly distributed along the circumferential direction of the groove wheel 41. The give-way grooves 42 are distributed along the radial direction of the groove wheel 41, and the cylindrical block 40 can rotate into the give-way grooves 42. When the second motor 37 rotates, the second motor 37 drives the dial wheel 38 to rotate, and the dial wheel 38 drives the lever 39 and the cylindrical block 40 to rotate. When the cylindrical block 40 rotates into the give-way grooves 42, the raised portion of the groove wheel 41 is located at the notch of the dial wheel 38, and the cylindrical block 40 begins to drive the groove wheel 41 to rotate, and the cylindrical block 40 rotates four times to drive the groove wheel 41 to rotate one circle.

[0043] As attached Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the bottom plate 1 is provided with an outer cylinder 43 coaxial with the rotating shaft 15, and the two guide columns 17 are both located in the outer cylinder 43. A trapezoidal groove 44 which is wider at the top and narrower at the bottom is opened on the right part of the outer cylinder 43. The lower end of the cross plate 19 is in contact with the retaining frame on the upper surface of the outer cylinder 43. When the through groove 21 on the tray 20 is opposite to the cross bar 23 up and down, the cross plate 19 rotates into the trapezoidal groove 44, and the cross bar 23 passes through the through groove 21 on the corresponding side. When the through groove 21 on the tray 20 is opposite to the suction cup 10 up and down, the suction cup 10 on the lower side can pass through the through groove 21 on the corresponding side upward.

[0044] As attached Figure 2 As shown, the guide column 17 is provided with a return spring 45 between the sleeve 18 and the upper plate 16. The return spring 45 always drives the sleeve 18 close to the lower plate 16, so that the lower end of the cross plate 19 contacts the upper surface retainer of the outer cylinder 43.

[0045] As attached Figure 3 and Figure 4 As shown, the vertical portion of the U-shaped plate 3 is provided with a guide rail 46 in the up and down directions, and sliders 47 adapted to the guide rail 46 are provided at both the front and rear ends of the pressure plate 8. The slider 47 is slidably connected to the guide rail 46 on the corresponding side. When the pressure plate 8 moves up and down, the pressure plate 8 drives the slider 47 to slide up and down along the guide rail 46. The guide rail 46 and the slider 47 can limit the sliding direction of the pressure plate 8 to the vertical direction.

[0046] As attached Figure 8 and Fig.12As shown, the outer surface of the guide column 17 is provided with a plurality of guide grooves 48 evenly distributed along its circumferential direction, and the inner surface of the sleeve 18 is provided with a plurality of guide blocks 49 corresponding to the guide grooves 48 one by one, and the guide blocks 49 are slidably connected with the guide grooves 48 on the corresponding side. When the sleeve 18 slides up and down, the sleeve 18 drives the guide blocks 49 to slide up and down along the guide grooves 48. The guide blocks 49 are always located in the guide grooves 48, which can prevent relative rotation between the sleeve 18 and the guide column 17.

[0047] When the present invention is in use, the two guide posts 17 are in a state of being opposite to each other, the suction cups 10 on the upper and lower sides are in an initial state of being separated, and the T-shaped plate 11 is in an initial state of being located to the left of the suction cup 10;

[0048] The staff first starts the second motor 37, and the output end of the second motor 37 drives the thumbwheel 38 to rotate clockwise, and the thumbwheel 38 drives the lever 39 and the cylindrical block 40 to rotate clockwise. When the cylindrical block 40 rotates to the rear side of the yield groove 42, the notch of the thumbwheel 38 rotates to the protrusion on the rear side of the groove wheel 41, and the cylindrical block 40 drives the groove wheel 41 to rotate counterclockwise, and the groove wheel 41 drives the upper side shaft 15 to rotate counterclockwise, and the upper side shaft 15 drives the plate 16 to rotate counterclockwise, and the plate 16 drives the two guide columns 17 to rotate counterclockwise around the shaft 15, and the guide column 17 drives the sleeve 18 and the cross plate 19 on the corresponding side to rotate counterclockwise around the shaft 15, and the cross plate 19 The tray 20 on the corresponding side is driven to rotate counterclockwise, the tray 20 on the right side rotates backward and leaves the two cross bars 23, the tray 20 on the left side rotates forward and leaves the suction cup 10, the lower end surfaces of the two cross plates 19 slide against the upper surface of the outer cylinder 43, the cross plate 19 on the right side starts to move upward along the inclined end of the trapezoidal groove 44, the cross plate 19 on the right side drives the sleeve 18 on the right side to slide upward along the guide column 17, the sleeve 18 on the right side presses the reset spring 45 upward, and at the same time, the sleeve 18 on the right side drives multiple guide blocks 49 to slide upward along the guide groove 48, and the guide blocks 49 and the guide groove 48 can prevent the sleeve 18 and the guide column 17 from rotating relative to each other;

[0049] When the notch on the dial wheel 38 is separated from the protrusion on the rear side of the groove wheel 41, the groove wheel 41 stops rotating. At this time, the two guide posts 17 change from being opposite to each other left and right to being opposite to each other front and back, and the two trays 20 also become opposite to each other front and back. The staff can use the conveying equipment to transport the plastic packaging bag to the tray 20 located at the rear side, and make the opening of the plastic packaging bag face away from the rotating shaft 15. The second motor 37 continues to rotate clockwise, and the second motor 37 drives the groove wheel 41 to rotate counterclockwise through the cylindrical block 40. The groove wheel 41 drives the rotating shaft 15 and the plate 16 to rotate counterclockwise. The plate 16 drives the two guide posts 17 to rotate counterclockwise around the rotating shaft 15, and the two guide posts 17 drive the two trays 20 to rotate counterclockwise.

[0050] When the notch on the dial wheel 38 separates from the protrusion on the rear side of the groove wheel 41 again, the tray 20 with the plastic packaging bag rotates to between the suction cups 10 on the upper and lower sides, and the through slots 21 on the tray 20 are opposite to the suction cups 10 up and down. At this time, the staff starts the second motor 37, and the output end of the second motor 37 drives the turntable 29 to rotate clockwise, and the turntable 29 drives the pull rod 6 to move right first and then to move left, and the pull rod 6 drives the pull plate 50 to move right first and then to move left;

[0051] When the pull plate 50 moves to the right, the pull plate 50 drives the two vertical plates 26 to move to the right, and the Z-shaped groove 27 and the V-shaped groove 33 move to the right with the vertical plate 26. In the initial state, the first plug post 25 is located at the horizontal part of the Z-shaped groove 27. At this time, when the Z-shaped groove 27 moves, the first plug post 25 does not move in the up and down direction. In the initial state, the second plug post 32 is located at the inclined part on the right side of the V-shaped groove 33. Since the two V-shaped grooves 33 are symmetrical up and down, the two V-shaped grooves 33 move to the right and drive the two second plug posts 32 to move in relative directions. The two second plug posts 32 drive the two pressing plates 8 to slide in relative directions through the connecting plate 31. The pressing plate 8 drives the slider 47 to slide along the guide rail 46. The guide rail 46 and the slider 47 can limit the movement of the pressing plate 8 in the up and down direction. The two pressing plates 8 drive the connecting tubes 9 and the suction cups 10 on the upper and lower sides to move in relative directions. The suction cups 10 on the upper and lower sides gradually approach the plastic packaging bag, and the suction cups 10 on the lower side move upward and pass through the through groove 21 on the tray 20.

[0052] When the second plug post 32 is located at the horizontal part of the V-shaped groove 33, the suction cups 10 on the upper and lower sides are in contact with the outer surface of the plastic packaging bag, and the first plug post 25 is located at the inclined part of the Z-shaped groove 27. The V-shaped groove 33 and the Z-shaped groove 27 continue to move rightward with the vertical plate 26. At this time, the second plug post 32 does not move in the up and down directions. The two Z-shaped grooves 27 drive the two first plug posts 25 to move in opposite directions. The two first plug posts 25 drive the two L-shaped plates 24 to move in opposite directions. The two L-shaped plates 24 drive the two pull rods 6 to move in opposite directions. The upper pull rod 6 drives the upper piston 5 to slide upward, and the lower pull rod 6 drives the lower piston 5 to slide downward. Negative pressure is formed in the two cylinder bodies 4. The negative pressure sucks out the gas between the suction cup 10 and the plastic packaging bag through the air pipe 7, so that the suction cup 10 is sucked on the surface of the plastic packaging bag.

[0053] When the second plug post 32 is located at the inclined portion on the left side of the V-shaped groove 33, the first plug post 25 is located at the horizontal portion on the left side of the Z-shaped groove 27, and the V-shaped groove 33 and the Z-shaped groove 27 continue to move rightward with the vertical plate 26, and the first plug post 25 does not move in the up-down direction, that is, the suction cups 10 on the upper and lower sides remain sucked on the plastic packaging bag, and the two V-shaped grooves 33 drive the two second plug posts 32 to move in opposite directions, and the two second plug posts 32 drive the two pressing plates 8 to move in opposite directions through the connecting plate 31, and the two pressing plates 8 drive the connecting tubes 9 and the suction cups 10 on the upper and lower sides to move in opposite directions, and the suction cups 10 on the upper and lower sides open the opening of the plastic packaging bag.

[0054] At this time, the cylinder 12 is started to contract, and the two cylinders 12 drive the T-plate 11 to move rightward. The horizontal part of the T-plate 11 is inserted into the plastic packaging bag from the opening, and the vertical part of the T-plate 11 drives the first inclined block 34 to move rightward. When the inclined surface on the first inclined block 34 contacts the inclined surface on the second inclined block 35, the first inclined block 34 drives the second inclined block 35 to move downward, and the second inclined block 35 presses the compression spring 36 downward. At the same time, the second inclined block 35 drives the cylindrical rod 13 to slide downward, and the cylindrical rod 13 drives the cylindrical blade 14 to move downward. The cylindrical blade 14 opens a hole in the upper part of the plastic packaging bag to open the bag. During the hole punching process, the enclosure at the upper end of the tray 20 can prevent the plastic packaging bag from deflecting, and the horizontal part of the T-plate 11 can prevent the plastic packaging bag from being punched through. Then the cylinder 12 is started to extend, and the two cylinders 12 drive the T-plate 11 to move to the left. The vertical part of the T-plate 11 drives the first inclined block 34 to move to the left. The first inclined block 34 is out of contact with the second inclined block 35. The second inclined block 35 moves upward under the action of the compression spring 36. The second inclined block 35 drives the cylindrical rod 13 and the cylindrical blade 14 to move upward to the initial position. When the T-plate 11 moves to the left to the initial position, the staff closes the cylinder 12;

[0055] After completing the single-sided punching of the plastic packaging bag, the turntable 29 starts to drive the pull rod 6 and the pull plate 50 to move leftward, the pull plate 50 drives the two vertical plates 26 to slide leftward, the Z-shaped groove 27 and the V-shaped groove 33 move leftward along with the vertical plate 26, the Z-shaped groove 27 and the V-shaped groove 33 drive the first plug column 25 and the second plug column 32 to return to the initial position, the piston 5 returns to the initial position, the gas in the cylinder body 4 enters between the suction cup 10 and the plastic packaging bag, the suction cup 10 is separated from the plastic packaging bag, the dial wheel 38 drives the groove wheel 41 to rotate counterclockwise again, the tray 20 with the plastic packaging bag rotates counterclockwise to the front of the rotating shaft 15, the transmission device transports the next plastic packaging bag to the tray 20 on the rear side, the dial wheel 38 drives the groove wheel 41 to rotate counterclockwise again through the cylindrical block 40, and the groove wheel 41 drives the cross plate 19 to rotate around the rotating shaft 15;

[0056] When the punched plastic packaging bag moves above the two cross bars 23, the cross plate 19 moves into the trapezoidal groove 44 on the outer cylinder 43, and the return spring 45 drives the sleeve 18 on the right to move downward, and the sleeve 18 on the right drives the cross plate 19 and the tray 20 on the right to move downward, and the two cross bars 23 pass through the through grooves 21 on the tray 20, and then drive the punched plastic packaging bag to move upward and leave the tray 20, so that the staff can carry out subsequent processing conveniently.

[0057] The first motor 28, the second motor 37 and the cylinder 12 in the present invention are all prior art, and all adopt currently commonly used circuit and pneumatic connection methods, and their specific structures will not be described in detail here.

[0058] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0059] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A single-side perforating device for a plastic packaging bag, comprising a bottom plate (1), characterized in that: The left part of the bottom plate (1) is provided with a shell (2) that penetrates the left and right sides, and the upper and lower parts of the shell (2) are both provided with U-shaped plates (3), the upper and lower openings of the two U-shaped plates (3) are opposite to each other, and a cylinder body (4) with an upper and lower axial direction is provided at the center of the horizontal part of the U-shaped plate (3), and a piston (5) is slidably connected in the cylinder body (4), and a pull rod (6) with an upper and lower axial direction and penetrating the U-shaped plate (3) is provided on the piston (5), and the two pull rods (6) move in opposite directions, and two air pipes (7) are opposite to each other at the bottom of the cylinder body (4), and a pressure plate (8) is vertically slidably connected to the vertical part of the U-shaped plate (3), and the two pressure plates (8) move in opposite directions, and the pressure plate (8) and the pull rod (6) move in an offset manner. Both the front and rear parts of the pressing plate (8) are provided with upper and lower axial connecting tubes (9), and the opposite ends of the two upper and lower connecting tubes (9) are provided with suction cups (10). The other end of the connecting tube (9) is connected to the free end of the air pipe (7) on the corresponding side. A T-shaped plate (11) is transversely arranged at the left end of the shell (2). The T-shaped plate (11) is driven by two left and right axial cylinders (12). The horizontal part of the T-shaped plate (11) can move between the suction cups (10) on the upper and lower sides. A cylindrical rod (13) is slidably connected to the upper U-shaped plate (3). The cylindrical rod (13) can move with the movement of the T-shaped plate (11). A cylindrical blade (14) is coaxially arranged at the lower end of the cylindrical rod (13). The bottom plate (1) and the right part of the shell (2) are both rotatably connected with a rotating shaft (15) in an up-and-down axial direction. The upper rotating shaft (15) is driven by an intermittent mechanism. The opposite ends of the two rotating shafts (15) are provided with flat plates (16). Two guide columns (17) in an up-and-down axial direction and opposite to each other are provided between the two flat plates (16). A sleeve (18) is slidably connected to the guide column (17). The opposite ends of the two sleeves (18) are provided with a horizontal plate (19) in the left-and-right direction. A tray (20) is provided on the horizontal plate (19). The tray (20) can be rotated between the suction cups (10) on the upper and lower sides. Two through grooves (21) in the front-and-back and left-and-right directions are provided on the horizontal part of the tray (20). A fixing plate (22) is vertically provided at the right end of the bottom plate (1). Two horizontal bars (23) in the left-and-right directions and opposite to each other are provided on the fixing plate (22). Both the horizontal bars (23) and the suction cups (10) can pass through the through grooves (21).

2. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The front end of the U-shaped plate (3) is vertically slidably connected to an L-shaped plate (24), the horizontal portion of the L-shaped plate (24) is fixedly connected to the pull rod (6) on the corresponding side, the vertical portion of the L-shaped plate (24) is provided with a first plug column (25) in the front-to-back axial direction, the upper and lower portions in the shell (2) are both horizontally slidably connected to a vertical plate (26) in the left-to-right direction, the two vertical plates (26) are fixedly connected via a pull plate (50), the pull plate (50) is driven by a driving mechanism, the opposite ends of the two vertical plates (26) are provided with a front-to-back through Z-shaped groove (27), the two Z-shaped grooves (27) are symmetrical up and down, and the first plug column (25) is located in the Z-shaped groove (27) on the corresponding side.

3. A single-side hole punching device for plastic packaging bags according to claim 2, characterized in that: The driving mechanism comprises a first motor (28) in the front-to-back axial direction, the first motor (28) being fixedly connected to the housing (2), the output end of the first motor (28) being provided with a rotating disk (29) located to the right of the pull plate (50) and in the front-to-back axial direction, the left end of the rotating disk (29) being hingedly connected to a connecting rod (30), the free end of the connecting rod (30) being hingedly connected to the pressing plate (8).

4. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The front end of the pressure plate (8) is provided with a connecting plate (31), the front end of the connecting plate (31) bypasses the U-shaped plate (3) and is provided with a second plug post (32) in the front-to-back axial direction, and the opposite ends of the two vertical plates (26) are provided with a front-to-back through-going V-shaped groove (33), the middle of the V-shaped groove (33) is horizontal, the two V-shaped grooves (33) are symmetrical up and down, and the second plug post (32) is located in the V-shaped groove (33) on the corresponding side.

5. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The vertical portion of the T-shaped plate (11) is provided with a first inclined block (34) in the left-right direction, and the upper end of the cylindrical rod (13) is provided with a second inclined block (35). The inclined surface on the first inclined block (34) can contact the inclined surface on the second inclined block (35). The cylindrical rod (13) is provided with a compression spring (36) located between the second inclined block (35) and the U-shaped plate (3). The compression spring (36) always drives the cylindrical blade (14) close to the upper U-shaped plate (3).

6. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The intermittent mechanism comprises a second motor (37) located on the left side of the rotating shaft (15) and in an up-and-down axial direction, the second motor (37) being fixedly connected to the upper side wall of the housing (2), a dial wheel (38) being provided at the output end of the second motor (37), a notch being provided at the left end of the dial wheel (38), a lever (39) being provided in the left-and-right direction at the lower end of the dial wheel (38), a cylindrical block (40) being provided in the up-and-down axial direction at the free end of the lever (39), a groove wheel (41) being provided at the middle of the rotating shaft (15) on the upper side, four paving grooves (42) being evenly distributed along the circumferential direction of the groove wheel (41), the paving grooves (42) being distributed along the radial direction of the groove wheel (41), and the cylindrical block (40) being able to rotate into the paving grooves (42).

7. A single-side hole punching device for a plastic packaging bag according to claim 1, characterized in that: The bottom plate (1) is provided with an outer cylinder (43) coaxial with the rotating shaft (15), the two guide pillars (17) are both located in the outer cylinder (43), the right part of the outer cylinder (43) is provided with a trapezoidal groove (44) which is wider at the top and narrower at the bottom, and the lower end of the horizontal plate (19) is in contact with a retaining frame on the upper surface of the outer cylinder (43).

8. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The guide column (17) is sleeved with a return spring (45) located between the sleeve (18) and the upper plate (16), and the return spring (45) always drives the sleeve (18) to approach the lower plate (16).

9. A single-side hole punching device for plastic packaging bags according to claim 1, characterized in that: The vertical portion of the U-shaped plate (3) is provided with a guide rail (46) in the up-and-down direction, and the front and rear ends of the pressing plate (8) are both provided with a sliding block (47) adapted to the guide rail (46), and the sliding block (47) is slidably connected to the guide rail (46) on the corresponding side.

10. A single-side hole punching device for a plastic packaging bag according to claim 1, characterized in that: The outer surface of the guide column (17) is provided with a plurality of guide grooves (48) evenly distributed along its circumferential direction, and the inner surface of the sleeve (18) is provided with a plurality of guide blocks (49) corresponding to the guide grooves (48) one by one, and the guide blocks (49) are slidably connected to the guide grooves (48) on the corresponding side.

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