A potato packaging net bag casing machine

Abstract

The present invention discloses a potato packaging net bag casing machine, comprising a first side plate and a second side plate, a movable weight detection component is provided between the first side plate and the second side plate, the gravity detection component comprises a weighing plate and a movable plate; the weighing plate is provided with a pull rod which can pull the hot melt block at the lower end of the net bag; the movable plate is provided with a fixed tube, and the fixed tube is provided with a plurality of hot melt components which can make the net bag hot-melt; the weighing plate is provided with a driving sleeve which cooperates with the hot melt component, and the driving sleeve can drive the hot melt component to move relative to the fixed tube so that the net bag passing through the hot melt component can be hot-melted. The present invention provides a net bag casing machine which can lengthen the length of the hot melt block at the bag opening when the weight of potatoes in the net bag increases, thereby improving the firmness and quality of the bag opening of the net bag, greatly improving the safety of the net bag, enabling the net bag to withstand different weights, and improving its scope of use.

Description

Technical Field

[0001] The invention relates to the technical field of potato packaging machines, in particular to a potato packaging net bag casing machine. Background Art

[0002] The potato packaging net bag sleeve machine is a machine used to package potatoes with net bags and then hot-melt the two ends of the net bags and cut them off. The existing potato packaging net bag sleeve machine usually has a constant hot-melt length during hot-melting. Therefore, after the potatoes are packaged in the net bag, the force borne by the hot-melt blocks at both ends of the net bag is constant. When the mass of the potatoes in the net bag is large, the hot-melt blocks at both ends of the net bag will detach, and there is a risk of the potatoes falling during transportation. Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the present invention provides a potato packaging net bag casing machine.

[0004] In order to solve the above technical problems, the present invention solves them through the following technical solutions: A potato packaging net bag casing machine includes a first side plate and a second side plate.

[0005] In the above solution, preferably, a movable gravity detection component is provided between the first side plate and the second side plate, and the gravity detection component includes a weighing plate and a movable plate;

[0006] The weighing plate is provided with a pull rod capable of pulling the hot melt block at the lower end of the mesh bag;

[0007] The movable plate is provided with a fixed tube, and the fixed tube is provided with a plurality of hot-melt components capable of hot-melting the mesh bag;

[0008] The weighing plate is provided with a driving sleeve matched with the hot melt component, and the driving sleeve can drive the hot melt component to move relative to the fixed tube so as to hot-melt the mesh bag passing through the hot melt component.

[0009] In the above solution, preferably, a driving cylinder is provided on the first side plate, the driving cylinder is connected to the movable plate, and a guide rail matching the movable plate is provided between the first side plate and the second side plate.

[0010] In the above solution, preferably, a plurality of guide pillars are provided on the movable plate, the weighing plate is slidably arranged on the guide pillars, and a first spring is provided between the weighing plate and the movable plate.

[0011] In the above scheme, preferably, connecting rods are symmetrically provided on the weighing plate, and a cylinder mounting plate is provided after the connecting rods pass through the movable plate. A lifting cylinder is provided on the cylinder mounting plate, and the lifting cylinder is connected to the pull rod. The lifting cylinder and the pull rod are both movably arranged in the fixed tube.

[0012] In the above scheme, preferably, one end of the pull rod is connected to the lifting cylinder, and the other end is provided with a positioning hole. Several positioning rods are evenly provided on the side wall of the positioning hole. A first electromagnet that can repel the positioning rod is provided in the pull rod, and a suction hole that penetrates the positioning hole is provided in the pull rod.

[0013] In the above scheme, preferably, the hot melt assembly includes symmetrically arranged heating blocks, one end of the heating block is provided with a hot melt surface that cooperates with the hot melt block at the lower end of the mesh bag, and the other end is provided with an extrusion block after passing through the wall of the fixed tube, and a second spring is provided between the extrusion block and the fixed tube.

[0014] In the above solution, preferably, the extrusion block is provided with a first inclined surface, and the driving sleeve is provided with a second inclined surface matching the first inclined surface.

[0015] In the above scheme, preferably, a first net bag guide plate is provided on the movable plate, a second net bag guide plate cooperating with the first net bag guide plate is provided on the second side plate, and a sealing component for sealing the upper end of the net bag is provided on the first net bag guide plate and the second net bag guide plate.

[0016] In the above scheme, preferably, the sealing assembly includes a sealing block and a movable block, the movable block is provided with a second electromagnet, a third spring is provided between the movable block and the first net bag guide plate and the second net bag guide plate, and a varistor is provided on the weighing plate, and the varistor is electrically connected to the second electromagnet.

[0017] In the above solution, preferably, a positioning cylinder is provided on the second mesh bag guide plate, and a positioning plate is provided on the positioning cylinder to enable the mesh bag to move after being cut.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a mesh bag casing machine which can lengthen the length of the hot melt block at the bag opening when the mass of potatoes in the mesh bag increases, thereby improving the firmness and quality of the bag opening, greatly improving the safety of the mesh bag, enabling the mesh bag to withstand different masses, and expanding its scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional result of the present invention is a schematic diagram.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the partially enlarged structure of point A of the present invention.

[0022] Figure 4 This is a schematic diagram of the partially enlarged structure of point B of the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of the combination of the hot melt component and the fixed tube of the present invention.

[0024] Figure 6 It is a schematic diagram of the weighing plate and the lifting cylinder of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the heating block of the present invention.

[0026] Figure 8 This is a diagram showing the coordination between the first mesh bag guide plate and the sealing assembly of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments: Figure 1-Figure 7 A potato packaging net bag casing machine includes a first side plate 1 and a second side plate 2. The first side plate 1 and the second side plate 2 are connected by a guide rail 12. The guide rails 12 are preferably in two groups and are symmetrically arranged on both sides of the above-mentioned side plates. The guide rails 12 are slidably arranged on a movable plate 4, and a sliding block that cooperates with the guide rails 12 is provided on the lower end surface of the movable plate 4.

[0028] A driving cylinder 11 is fixedly provided on the first side panel 1 . The cylinder body of the driving cylinder 11 is fixed to the first side panel 1 , and the movable end is connected to the movable plate 4 , that is, the driving cylinder 11 can drive the movable plate 4 to move on the guide rail 12 toward the second side panel 2 .

[0029] The first side plate 1 and the second side plate 2 are fixed plates on the frame of the potato packaging net bag casing machine. A plurality of guide columns 13 are fixed on the upper end surface of the movable plate 4, and the guide columns 13 are preferably 4 in number. The guide columns 13 are slidably arranged on the weighing plate 3. A first spring 14 is provided between the weighing plate 3 and the movable plate 4. The first spring 14 is sleeved on the guide column 13 and the two ends are respectively against the lower end surface of the weighing plate 3 and the upper end surface of the movable plate 4, that is, when there is an item of a certain mass on the weighing plate 3, the weighing plate 3 can slide downward to compress the first spring 14. Specifically, the item can be a potato. Placing potatoes on the weighing plate 3 can change the distance between the weighing plate 3 and the movable plate 4.

[0030] The structural cooperation between the weighing plate 3 and the movable plate 4 constitutes a gravity detection component, that is, the change in the distance between the weighing plate 3 and the movable plate 4 reflects the change in the gravity of the objects on the weighing plate 3.

[0031] A connecting rod 21 is symmetrically provided on the lower end surface of the weighing plate 3, one end of the connecting rod 21 is fixed on the weighing plate 3, and the other end slides through the movable plate 4 and is fixed with a cylinder mounting plate 22, that is, the cylinder mounting plate 22 can move synchronously with the up and down movement of the weighing plate 3, and a lifting cylinder 23 is fixed on the cylinder mounting plate 22, and the lifting cylinder 23 is arranged through the movable plate 4, that is, the lifting cylinder 23 can slide up and down relative to the movable plate 4.

[0032] The cylinder body of the lifting cylinder 23 is fixed on the cylinder mounting plate 22, and the movable rod end thereof is fixed with a pull rod 5 that can pull the hot melt block at the lower end of the mesh bag. Specifically, one end of the pull rod 5 is fixedly connected to the movable rod end of the lifting cylinder 23, and the other end (that is, the end upward close to the weighing plate 3) is provided with a positioning hole 24 that can accommodate the hot melt block at the lower end of the mesh bag. A number of positioning rods 25 are evenly arranged on the side wall of the positioning hole 24 around the center of the hole. The positioning rods 25 are laterally slidably arranged on the pull rod 5, that is, the positioning rod 25 can slide toward the center 24 of the positioning hole to clamp the hot melt block placed in the positioning hole 24.

[0033] A guide hole cooperating with the positioning rod 25 is provided in the pull rod 5, and a first electromagnet 26 cooperating with the positioning rod 25 is fixed at the bottom of the guide hole. The positioning rod 25 is preferably a magnetic block. After the first electromagnet 26 is energized, it is preferably the same magnetic pole as the positioning rod 25, that is, when the first electromagnet 26 is energized, it can drive the positioning rod 25 to slide toward the center of the positioning hole 24, clamping the hot melt block placed in the positioning hole 24. The surface of the positioning rod 25 close to the center of the positioning hole 24 is provided with a number of serrations or irregular scratches that can enhance surface friction.

[0034] The pull rod 5 is provided with a suction hole 27 which is connected to the positioning hole 24. The suction hole 27 can preferably be connected to a suction pump through an air pipe. When the hot melt block is located at the upper end surface of the pull rod 5, the suction hole 27 is provided with a negative pressure by the suction pump, and the hot melt block is quickly sucked into the positioning hole 24. That is, when the previous mesh bag is cut off, the pull rod 5 can be lifted upward by the lifting cylinder 23 so that the upper end surface of the pull rod 5 contacts the hot melt block at the lower end of the mesh bag at the cut position, and then the hot melt block at the lower end of the mesh bag is sucked in by the suction pump and the suction hole 27, and then the hot melt block is clamped by the positioning rod 25. Then the lifting cylinder 23 is reset to pull the mesh bag downward, and then the potatoes can be put into the mesh bag above the hot melt block.

[0035] The movable plate 4 is provided with a fixed tube 6, the lifting cylinder 23 and the pull rod 5 are both slidably arranged in the fixed tube 6 and do not interfere with the fixed tube 6, the upper end of the fixed tube 6 is located below the lower end surface of the weighing plate 3, and the upper end of the fixed tube 6 is sequentially provided with a plurality of hot melt components that can make the mesh bag hot melt, and the hot melt components are closely adjacent to each other, preferably 2-4 groups are provided. Figure 2 Shown is a cross-sectional view of arranging 4 sets of hot melt components.

[0036] The hot melt assembly includes a symmetrically arranged heating block 31, and the heating block 31 is provided with a hot melt surface 32 that cooperates with the hot melt block at the lower end of the mesh bag on one side near the center of the fixed tube 6. The hot melt surface 32 is preferably a semi-cylindrical surface, and the other end is provided with an extrusion block 33 after passing through the wall of the fixed tube 6 through a hexagonal rod. The wall of the fixed tube 6 is provided with a hexagonal hole that cooperates with the hexagonal rod, that is, when the symmetrically arranged heating blocks 31 slide synchronously toward the center of the fixed tube 6, when the heating blocks 31 press against each other, their hot melt surfaces 32 form the same cylindrical surface as the hot melt blocks, and a second spring 34 is provided between the extrusion block 33 and the outer wall of the fixed tube 6. The second spring 34 is sleeved on the hexagonal rod and its two ends respectively press against the extrusion block 33 and the outer wall of the fixed tube 6.

[0037] The extrusion block 33 is provided with a first inclined surface 35 on the side away from the fixed tube 6. The first inclined surface 35 is preferably inclined from top to bottom toward the side away from the center of the fixed tube 6. The weighing plate 3 is provided with a drive sleeve 7 which is concentric with the fixed tube 6 and can cooperate with the extrusion block 33 after sliding. Specifically, the drive sleeve 7 is fixed on the weighing plate 3, and the inner hole at the lower end of the drive sleeve 7 is provided with a second inclined surface 36 which cooperates with the first inclined surface 35. The second inclined surface 36 is preferably inclined from top to bottom toward the side away from the center of the drive sleeve 7.

[0038] When the weighing plate 3 slides down due to the increase in the mass of the items on the plate, the driving sleeve 7 slides down synchronously so that the second inclined surface 36 cooperates with the first inclined surface 35, so that the extrusion block 33 compresses the second spring 34. Further, the heating block 31 slides synchronously toward the center of the fixed tube 6 to form a cylindrical hole, so that the mesh bag passing through the heating block 31 can be hot-melted, thereby increasing the distance of the hot-melt block at the lower end of the mesh bag and improving the firmness of the lower end of the mesh bag, that is, the hot-melt distance of the lower end of the mesh bag is extended as the mass of the items on the weighing plate 3 increases.

[0039] In order to seal the upper part of the net bag, the movable plate 4 is provided with a first net bag guide plate 41, and the second side plate 2 is provided with a second net bag guide plate 42 that matches the first net bag guide plate 41. The first net bag guide plate 41 is preferably arranged below the second net bag guide plate 42. When the movable plate 4 slides, the upper end surface of the first net bag guide plate 41 can be fitted with the lower end surface of the second net bag guide plate 42. Figure 1 As shown, the first mesh bag guide plate 41 and the second mesh bag guide plate 42 are both arranged in a V shape toward the center of the weighing plate 3 , and the V shape is arranged to make the open mesh bag easier to fold.

[0040] The first net bag guide plate 41 and the second net bag guide plate 42 are provided with a sealing assembly for sealing the upper end of the net bag. The sealing assembly includes a sealing block 51 and a movable block 52. The sealing block 51 is preferably a semicircular block, and its semicircular radius is preferably the same as the radius of the heating block 31. That is, when the two sealing blocks 51 on the first net bag guide plate 41 and the second net bag guide plate 42 slide in the same direction and are combined into a circular hole, they can heat-melt the net bag to form a hot-melt block.

[0041] The movable block 52 is slidably arranged in the sealing block 51. The sealing block 51 is a thin-walled body. The movable block 52 is preferably a semicircular block that cooperates with the sealing block 51, and is formed with an equidistant distance of 0.2-0.8 mm from the sealing block 51. The movable block 52 and the sealing block 51 are both connected to the heating wire, and can heat-melt the plastic mesh bag when they come into contact with the plastic mesh bag.

[0042] The upper end of the movable block 52 is slidably connected to the sealing block 51, and the lower end is provided with a mounting plate, and the mounting plate extends away from the center of the sealing block 51 and is fixed with a second electromagnet 53. A third spring 54 is provided between the movable block 52 and the first net bag guide 41 or the second net bag guide 42. The weighing plate 3 is provided with a piezoresistor, and the piezoresistor is electrically connected to the second electromagnet 53. When the pressure on the weighing plate 3 is greater, the resistance of the piezoresistor is greater. At this time, the suction force of the second electromagnet 53 is smaller, so that the distance between the second electromagnet 53 and the first net bag guide 41 or the second net bag guide 42 is longer, that is, the movable block 52 is displaced relative to the sealing block 51. The longer the distance between the movable block 52 and the sealing block 51 increases, and further, when the pressure on the weighing plate 3 is greater, that is, the greater the mass of the article, the longer the distance between the hot melt blocks when the upper end of the net bag is sealed, thereby improving the firmness of the upper end of the net bag.

[0043] To make the solution complete, a positioning cylinder 61 is provided on the second mesh bag guide plate 42, and a positioning plate 62 is provided on the positioning cylinder 61 for moving the mesh bag after cutting. The positioning plate 62 is provided with a clamping hole for the mesh bag to be clamped. When the first mesh bag guide plate 41 slides toward the second mesh bag guide plate 42, the mesh bag can be guided by two guide plates and then clamped into the clamping hole of the positioning plate 62. Then, the center of the mesh bag can be pushed to a position concentric with the fixed tube 6 by the positioning cylinder 61. A cutting mechanism can be provided on the first mesh bag guide plate 41, and the hot-melt block of the mesh bag after hot melting is cut off by a cutter. This is an existing technology and will not be elaborated on here. After cutting, the lower part is packed away with the packaged potatoes, and the upper part is left under the positioning plate 62 for the pull rod 5 to adsorb.

[0044] In this embodiment, the electronically controlled components can all be controlled by a PLC controller, that is, the driving cylinder 11, the lifting cylinder 23, the positioning cylinder 61, the first electromagnet 26 and the second electromagnet 53 can all be controlled by a PLC controller.

[0045] Method for using a potato packaging net bag casing machine as described above:

[0046] S1: The mesh bag is hot-melted by the sealing assembly and then cut off by the cutting mechanism. After cutting, the upper hot-melt block is left on the positioning plate 62. Then, the positioning cylinder 61 is controlled to push the positioning plate 62 to a position concentric with the fixed tube 6.

[0047] S2: Drive the lifting cylinder 23 to lift the pull rod 5 upward, then suck the hot melt block through the suction hole 27 and suck it into the positioning hole 24, and then trigger the first electromagnet 26 to energize and clamp the hot melt block through the positioning rod 25;

[0048] S3: Retract the lifting cylinder 23, then the net bag above the hot melt block passes through the drive sleeve 7, and then potatoes and other items are added to the net bag. As the items are added, the weighing plate 3 slides downward, and at this time, the pull rod 5 slides downward synchronously with the weighing plate 3;

[0049] S4: The pull rod 5 pulls the mesh bag above the hot melt block so that the mesh bag passes through the hot melt assembly located at the top of the fixed tube 6. At the same time, the driving sleeve 7 cooperates with the first inclined surface 35 through the second inclined surface 36 to slide the heating block 31 toward the center of the fixed tube 6, so that the mesh bag passing through the hot melt assembly is melted by the heating block 31, thereby extending the length of the hot melt block;

[0050] S5: At the same time, the resistance of the piezoresistor on the weighing plate 3 increases, which reduces the suction force of the second electromagnet 53, thereby making the movable block 52 move farther relative to the sealing block 51;

[0051] S6: The driving cylinder 11 is triggered to move the movable plate 4 toward the second side plate 2. The upper mesh bag is gathered together by the cooperation of the first mesh bag guide 41 and the second mesh bag guide 42. Finally, the mesh bag is hot-melt sealed by the symmetrically arranged sealing components. At the same time, the mesh bag at the upper end of the hot-melt seal is clamped in the positioning plate 62.

[0052] S7: The air cylinder 11 is driven to retract, and the cutting mechanism is triggered to cut off the hot melt portion of the sealing assembly. The cut portion is preferably flush with the upper end surface of the second mesh bag guide plate 42. After cutting, the S1 action is repeated.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A potato packaging net bag casing machine, comprising a first side plate (1) and a second side plate (2), characterized in that: A movable gravity detection component is provided between the first side plate (1) and the second side plate (2), and the gravity detection component comprises a weighing plate (3) and a movable plate (4); The weighing plate (3) is provided with a pull rod (5) capable of pulling the hot melt block at the lower end of the mesh bag; The movable plate (4) is provided with a fixed tube (6), and the fixed tube (6) is provided with a plurality of hot-melt components capable of hot-melting the mesh bag; The weighing plate (3) is provided with a driving sleeve (7) that matches the hot melt component, and the driving sleeve (7) can drive the hot melt component to move relative to the fixed tube (6) so that the mesh bag passing through the hot melt component is hot-melted; The hot melt assembly comprises a symmetrically arranged heating block (31), one end of the heating block (31) is provided with a hot melt surface (32) that matches the hot melt block at the lower end of the mesh bag, and the other end is provided with an extrusion block (33) after passing through the wall of a fixed tube (6); The extrusion block (33) is provided with a first inclined surface (35), and the drive sleeve (7) is provided with a second inclined surface (36) that matches the first inclined surface (35); The movable plate (4) is provided with a first mesh bag guide plate (41), the second side plate (2) is provided with a second mesh bag guide plate (42) that matches the first mesh bag guide plate (41), and the first mesh bag guide plate (41) and the second mesh bag guide plate (42) are provided with sealing components for sealing the upper end of the mesh bag; The sealing assembly comprises a sealing block (51) and a movable block (52), the movable block (52) is provided with a second electromagnet (53), the weighing plate (3) is provided with a piezoresistor, and the piezoresistor is electrically connected to the second electromagnet (53).

2. The potato packaging mesh bag casing machine according to claim 1, characterized in that: A driving cylinder (11) is provided on the first side plate (1), and the driving cylinder (11) is connected to the movable plate (4). A guide rail (12) that matches the movable plate (4) is provided between the first side plate (1) and the second side plate (2).

3. The potato packaging mesh bag casing machine according to claim 2, characterized in that: A plurality of guide pillars (13) are provided on the movable plate (4), the weighing plate (3) is slidably arranged on the guide pillars (13), and a first spring (14) is provided between the weighing plate (3) and the movable plate (4).

4. The potato packaging net bag casing machine according to claim 3, characterized in that: The weighing plate (3) is symmetrically provided with a connecting rod (21), and the connecting rod (21) is provided with a cylinder mounting plate (22) after passing through the movable plate (4). The cylinder mounting plate (22) is provided with a lifting cylinder (23), and the lifting cylinder (23) is connected to the pull rod (5). The lifting cylinder (23) and the pull rod (5) are both movably arranged in the fixed tube (6).

5. The potato packaging net bag casing machine according to claim 4, characterized in that: One end of the pull rod (5) is connected to the lifting cylinder (23), and the other end is provided with a positioning hole (24). A plurality of positioning rods (25) are evenly provided on the side wall of the positioning hole (24). A first electromagnet (26) that can repel the positioning rod (25) is provided in the pull rod (5). A suction hole (27) that is connected to the positioning hole (24) is provided in the pull rod (5).

6. The potato packaging mesh bag casing machine according to claim 5, characterized in that: A second spring (34) is provided between the extrusion block (33) and the fixed tube (6).

7. The potato packaging mesh bag casing machine according to claim 6, characterized in that: A third spring (54) is provided between the movable block (52) and the first net bag guide plate (41) and the second net bag guide plate (42).

8. The potato packaging mesh bag casing machine according to claim 7, characterized in that: A positioning cylinder (61) is provided on the second mesh bag guide plate (42), and a positioning plate (62) is provided on the positioning cylinder (61) for moving the mesh bag after cutting.

Images