Edge sealing mechanism of bag making machine

Abstract

The utility model provides an edge sealing mechanism of a bag making machine. The edge sealing mechanism of the bag making machine comprises a bottom plate, two moving beams, two hot pressing blocks, two pressing and sealing blocks and two side edge bearing plates, four L-shaped supporting blocks distributed in a rectangular shape are fixedly installed at the top of the bottom plate, and limiting sliding columns are fixedly installed at the tops of the four L-shaped supporting blocks; two lifting plates and two top plates are further arranged above the bottom plate, the two lifting plates are arranged on the two corresponding limiting sliding columns in a sliding and sleeving mode, the two top plates are fixedly installed at the top ends of the two corresponding limiting sliding columns, hydraulic cylinders are fixedly installed at the tops of the two top plates, and hydraulic cylinders are fixedly installed at the top ends of the hydraulic cylinders. The output ends of the two hydraulic cylinders extend to the positions below the corresponding top plates and are fixedly connected with the corresponding lifting plates. The edge sealing mechanism of the bag making machine has the advantages that the edge sealing mechanism can be suitable for sealing the edges of plastic films with different widths within a certain range, and the edge sealing mechanism is easy to operate and wide in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making, in particular to a sealing edge mechanism of a bag making machine. Background Technique

[0002] Bag making is a processing process mainly used to make non-rigid containers such as bags made of paper, plastic or aluminum foil. Plastic bags are the most common bags in current life. During the production of plastic bags, it is necessary to first seal the two sides of two layers of plastic film to form a bag body, and then perform a transverse seal on the bag body. Finally, after cutting, individual plastic bags can be formed.

[0003] In the prior art, when the mechanism for sealing the two sides of a plastic film is in use, it can usually only seal plastic bags of one width specification, with low applicability. Although a few sealing edge mechanisms can adjust the distance between the pressure sealing block and the hot pressing block, the adjustment operation is relatively complicated.

[0004] Therefore, it is necessary to provide a new sealing edge mechanism of a bag making machine to solve the above technical problems. Content of the Utility Model

[0005] The technical problem solved by the utility model is to provide a sealing edge mechanism of a bag making machine that can be suitable for sealing plastic films of different widths within a certain range, and has simple operation and wide applicability.

[0006] To solve the above technical problems, the edge-sealing mechanism of the bag-making machine provided by the utility model includes: a bottom plate, two moving beams, two hot pressing blocks, two pressing and sealing blocks, and two side supporting plates. The two moving beams are both arranged above the bottom plate. The two hot pressing blocks are respectively and fixedly installed on the two moving beams. The two pressing and sealing blocks are respectively and fixedly installed on the two moving beams. The two side supporting plates are both arranged on the top of the bottom plate. Four L-shaped supporting blocks distributed in a rectangle are fixedly installed on the top of the bottom plate. Limiting sliding columns are fixedly installed on the tops of the four L-shaped supporting blocks. Two lifting plates and two top plates are also arranged above the bottom plate. The two lifting plates are both slidably sleeved on the corresponding two limiting sliding columns. The two top plates are both fixedly installed at the tops of the corresponding two limiting sliding columns. Hydraulic cylinders are fixedly installed on the tops of the two top plates. The output ends of the two hydraulic cylinders both extend below the corresponding top plates and are fixedly connected to the corresponding lifting plates. The two ends of the two moving beams are respectively slidably connected to the two lifting plates. A bidirectional lead screw is rotatably installed on the two lifting plates. Two driven blocks are threadedly sleeved on the bidirectional lead screw. Rotatable push rods are rotatably installed on the outer walls on both sides of the two driven blocks. One ends of the four rotatable push rods far away from the corresponding driven blocks are rotatably connected to the corresponding moving beams. Two limiting sliding rails are fixedly installed on the top of the bottom plate. The two side supporting plates are both slidably sleeved on the two limiting sliding rails. A plurality of fixed sliding rods are fixedly installed on the two limiting sliding rails. The plurality of fixed sliding rods are all slidably connected to the corresponding moving beams. A rotating wheel is fixedly installed at one end of the bidirectional lead screw.

[0007] Preferably, lower fixing plates are fixedly installed on the outer walls on the sides where the two side supporting plates are away from each other. The plurality of fixed sliding rods are respectively fixedly installed on the two lower fixing plates. Upper fixing plates are fixedly installed on the outer walls on the sides where the two moving beams are away from each other. The plurality of fixed sliding rods all penetrate through the corresponding upper fixing plates and are slidably connected to the corresponding upper fixing plates.

[0008] Preferably, a plurality of hand rods are fixedly installed on the outer ring of the rotating wheel. Anti-slip balls are fixedly sleeved at one ends of the plurality of hand rods far away from the rotating wheel.

[0009] Preferably, a screw rod is penetrated and threadedly installed on the rotating wheel. A contact head is rotatably sleeved at one end of the screw rod close to the lifting plate.

[0010] Preferably, a friction ring is fixedly installed on the lifting plate close to the rotating wheel. The contact head is in contact with the friction ring.

[0011] Compared with the related art, the edge-sealing mechanism of the bag-making machine provided by the utility model has the following beneficial effects:

[0012] The utility model provides a sealing edge mechanism of a bag making machine. By arranging two slidable moving beams and side supporting plates, two hot pressing blocks and two sealing blocks are respectively fixedly installed on the two moving beams. In combination with the arrangements of a bidirectional lead screw, two driven blocks, two rotatable push rods, two lower fixing plates, two upper fixing plates, and a plurality of fixed sliding rods, when the bidirectional lead screw rotates forward or backward, the distances between the two hot pressing blocks, the two sealing blocks, and the two side supporting plates can be simultaneously increased or decreased. During bag making, within a certain range, it is suitable for sealing edges of plastic films with different widths, having the advantages of simple operation and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a schematic structural diagram of a preferred embodiment of the sealing edge mechanism of the bag making machine provided by the utility model;

[0014] Figure 2 is Figure 1 an enlarged schematic view of part A shown in;

[0015] Figure 3 FIG. is a front view of a preferred embodiment of the sealing edge mechanism of the bag making machine provided by the utility model;

[0016] Figure 4 is Figure 1 a schematic structural diagram of the driven block and the rotatable push rod shown in;

[0017] Figure 5 is Figure 1 an assembly schematic diagram of the side supporting plate and the limit sliding rail shown in;

[0018] Figure 6 is Figure 2 a schematic structural diagram of the screw rod shown in.

[0019] Reference numerals in the figures: 1, bottom plate; 2, L-shaped support block; 3, limit sliding column; 4, lifting plate; 5, top plate; 6, hydraulic cylinder; 7, moving beam; 8, hot pressing block; 9, sealing block; 10, side supporting plate; 11, limit sliding rail; 12, bidirectional lead screw; 13, driven block; 14, rotatable push rod; 15, lower fixing plate; 16, upper fixing plate; 17, fixed sliding rod; 18, rotating wheel; 19, friction ring; 20, screw rod; 21, abutting head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Please refer to Figures 1-6 , wherein, Figure 1 FIG. is a schematic structural diagram of a preferred embodiment of the sealing edge mechanism of the bag making machine provided by the utility model; Figure 2 is Figure 1Schematic enlarged view of part A shown Figure 3 Front view of a preferred embodiment of the edge sealing mechanism of the bag making machine provided by the present utility model Figure 4 For Figure 1 Schematic structural view of the driven block and the rotatable push rod shown

[0022] Figure 5 For Figure 1 Assembly schematic view of the side supporting plate and the limit sliding rail shown Figure 6 For Figure 2Schematic structural diagram of the shown screw. The edge-sealing mechanism of the bag-making machine includes: a bottom plate 1, two moving beams 7, two hot pressing blocks 8, two pressing and sealing blocks 9, and two side supporting plates 10. The specific structures of the two hot pressing blocks 8, the two pressing and sealing blocks 9, and the two side supporting plates 10 are all of the conventional designs in the prior art. The two moving beams 7 are both arranged above the bottom plate 1. The two hot pressing blocks 8 are respectively fixedly installed on the two moving beams 7. The two pressing and sealing blocks 9 are respectively fixedly installed on the two moving beams 7. The two side supporting plates 10 are both arranged on the top of the bottom plate 1. Four L-shaped supporting blocks 2 distributed in a rectangle are fixedly installed on the top of the bottom plate 1. Limiting sliding columns 3 are fixedly installed on the tops of the four L-shaped supporting blocks 2. Above the bottom plate 1, two lifting plates 4 and two top plates 5 are also arranged. Two sliding holes are formed in each of the two lifting plates 4, and the two sliding holes are slidably sleeved on the corresponding two limiting sliding columns 3. The two top plates 5 are fixedly installed at the tops of the corresponding two limiting sliding columns 3. Hydraulic cylinders 6 are fixedly installed on the tops of the two top plates 5. The output ends of the two hydraulic cylinders 6 extend below the corresponding top plates 5 and are fixedly connected to the corresponding lifting plates 4. The two ends of the two moving beams 7 are respectively slidably connected to the two lifting plates 4. Specifically, two limiting sliding grooves are formed on the outer walls of the two moving beams 7 close to each other. Limiting sliding blocks are fixedly installed at the two ends of the moving beam 7, and the limiting sliding blocks are slidably installed in the limiting sliding grooves. By pushing the lifting plate 4 downward through the hydraulic cylinder 6, the two moving beams 7 are lowered. Driven by the two moving beams 7, the hot pressing block 8 presses on the plastic film to preheat the plastic film. After the preheated plastic film advances below the pressing and sealing block 9, when the moving beam 7 descends, the pressing and sealing block 9 and the side supporting plate 10 cooperate to press the two sides of the plastic film. A same bidirectional lead screw 12 is rotatably installed on the two lifting plates 4. Two driven blocks 13 are threadedly sleeved on the bidirectional lead screw 12. The two driven blocks 13 are respectively threadedly sleeved on two external threads with opposite helix directions on the bidirectional lead screw 12. A lead screw nut sleeve is fixedly installed inside the driven block 13, and the lead screw nut sleeve is threadedly connected to the bidirectional lead screw 12. Rotatable push rods 14 are rotatably installed on the outer walls of the two sides of the two driven blocks 13. One ends of the four rotatable push rods 14 away from the corresponding driven blocks 13 are rotatably connected to the corresponding moving beams 7. The four rotatable push rods 14 are distributed in a diamond shape. Two limiting sliding rails 11 are fixedly installed on the top of the bottom plate 1. The two side supporting plates 10 are both slidably sleeved on the two limiting sliding rails 11. A plurality of fixed sliding rods 17 are fixedly installed on the two limiting sliding rails 11, and the plurality of fixed sliding rods 17 are all slidably connected to the corresponding moving beams 7. Specifically, lower fixing plates 15 are fixedly installed on the outer walls of the two side supporting plates 10 away from each other, and the plurality of fixed sliding rods 17 are respectively fixedly installed on the two lower fixing plates 15. Upper fixing plates 16 are fixedly installed on the outer walls of the two moving beams 7 away from each other, and the plurality of fixed sliding rods 17 all penetrate through the corresponding upper fixing plates 16 and are slidably connected to the corresponding upper fixing plates 16. A rotating wheel 18 is fixedly installed at one end of the bidirectional lead screw 12.During the process of rotating the rotating wheel 18 in the forward direction to drive the bidirectional lead screw 12 to rotate, the two driven blocks 13 will be driven to move towards each other. During this process, the included angle between the rotatable push rod 14 and the bidirectional lead screw 12 will gradually increase, pushing the two moving beams 7 away from the bidirectional lead screw 12, so that the distance between the two moving beams 7 increases. While rotating the bidirectional lead screw 12 in the reverse direction, the distance between the two moving beams 7 will decrease. During the movement of the moving beam 7, the side supporting plate 10 will be correspondingly driven to move through the fixed slide rod 17. In this way, the user can adjust the distances between the two hot pressing blocks 8, the two sealing blocks 9 and the two side supporting plates 10 according to the width of the plastic film (i.e., the width of the bag to be made).

[0023] In this embodiment, in order to facilitate the rotation of the rotating wheel 18, a plurality of hand rods are fixedly installed on the outer ring of the rotating wheel 18, and anti-slip balls are fixedly sleeved at one ends of the plurality of hand rods away from the rotating wheel 18.

[0024] In this embodiment, in order to prevent the bidirectional lead screw 12 from rotating randomly, a screw rod 20 is penetrated and threadedly installed on the rotating wheel 18. A contact head 21 is rotatably sleeved at one end of the screw rod 20 close to the lifting plate 4. A friction ring 19 is fixedly installed on the lifting plate 4 close to the rotating wheel 18. The friction ring 19 is made of ceramic material. The contact head 21 is in contact with the friction ring 19. By screwing the screw rod 20 in the forward direction, the contact head 21 is tightened against the friction ring 19, and the static friction between the two is used to prevent the rotating wheel 18 from rotating randomly, thereby preventing the bidirectional lead screw 12 from rotating randomly.

[0025] The working principle of the edge sealing mechanism of the bag making machine provided by the present utility model is as follows:

[0026] During use, adjust the distances between the two hot pressing blocks 8, the two sealing blocks 9, and the two side supporting plates 10 according to the width of the bag to be made. When adjusting the distance, first rotate the screw rod 20 counterclockwise to separate the abutting head 21 from the friction ring 19, and then rotate the rotating wheel 18 forward or backward. The rotating wheel 18 drives the bidirectional lead screw 12 to rotate correspondingly. During the forward rotation of the bidirectional lead screw 12, the two driven blocks 13 will move closer to each other. The two driven blocks 13 respectively drive the corresponding two rotatable push rods 14 to rotate. The four rotatable push rods 14 will push the two moving beams 7 to move away from each other, increasing the distance between the two moving beams 7. During the leftward movement of the two moving beams 7, they will drive the corresponding sealing blocks 9 and hot pressing blocks 8 to move, and will also drive the corresponding side supporting plates 10 to move through the fixed sliding rods 17, so that the distances between the two hot pressing blocks 8, the two sealing blocks 9, and the two side supporting plates 10 also increase correspondingly. It can be known from the reverse thrust of the above working principle that when the bidirectional lead screw 12 is rotated reversely, the distances between the two hot pressing blocks 8, the two sealing blocks 9, and the two side supporting plates 10 will decrease. When the distance is adjusted appropriately, stop rotating the rotating wheel 18. Finally, screw the screw rod 20 forward to make the abutting head 21 tightly abut against the friction ring 19;

[0027] When sealing the edge, the output end of the hydraulic cylinder 6 extends downward, driving the two lifting plates 4 to move downward, so that the two moving beams 7, the two hot pressing blocks 8, and the two sealing blocks 9 descend. The two hot pressing blocks 8 preheat the plastic film. After the preheated part moves to the lower part of the sealing blocks 9, the two sides of the plastic film are pressed together by the two sealing blocks 9.

[0028] Compared with the related technology, the edge sealing mechanism of the bag making machine provided by the present utility model has the following beneficial effects:

[0029] The present utility model provides an edge sealing mechanism of a bag making machine. By providing two slidable moving beams 7 and side supporting plates 10, two hot pressing blocks 8 and two sealing blocks 9 are respectively fixedly installed on the two moving beams 7. Combining the settings of components such as the bidirectional lead screw 12, the two driven blocks 13, the two rotatable push rods 14, the two lower fixing plates 15, the two upper fixing plates 16, and the multiple fixed sliding rods 17, during the forward or reverse rotation of the bidirectional lead screw 12, the distances between the two hot pressing blocks 8, the two sealing blocks 9, and the two side supporting plates 10 can be simultaneously increased or decreased. When making bags, within a certain range, it can be suitable for edge sealing plastic films of different widths, having the advantages of simple operation and wide applicability.

[0030] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A sealing mechanism for a bag-making machine, comprising a bottom plate, two moving beams, two hot pressing blocks, two pressing and sealing blocks, and two side supporting plates. The two moving beams are both arranged above the bottom plate. The two hot pressing blocks are respectively fixedly installed on the two moving beams. The two pressing and sealing blocks are respectively fixedly installed on the two moving beams. The two side supporting plates are both arranged on the top of the bottom plate, characterized in that, Four L-shaped support blocks distributed in a rectangle are fixedly installed at the top of the bottom plate. Limit sliding columns are fixedly installed at the tops of the four L-shaped support blocks. Above the bottom plate, two lifting plates and two top plates are further arranged. The two lifting plates are both slidably sleeved on the corresponding two limit sliding columns. The two top plates are both fixedly installed at the tops of the corresponding two limit sliding columns. Hydraulic cylinders are fixedly installed at the tops of the two top plates. The output ends of the two hydraulic cylinders both extend below the corresponding top plates and are fixedly connected to the corresponding lifting plates. Both ends of the two moving beams are respectively slidably connected to the two lifting plates. A same bidirectional lead screw is rotatably installed on the two lifting plates. Two driven blocks are sleeved on the bidirectional lead screw by threads. Rotatable push rods are rotatably installed on the outer walls on both sides of the two driven blocks. One ends of the four rotatable push rods far away from the corresponding driven blocks are respectively rotatably connected to the corresponding moving beams. Two limit sliding rails are fixedly installed at the top of the bottom plate. The two side supporting plates are both slidably sleeved on the two limit sliding rails. A plurality of fixed sliding rods are fixedly installed on the two limit sliding rails. The plurality of fixed sliding rods are all slidably connected to the corresponding moving beams. A rotatable wheel is fixedly installed at one end of the bidirectional lead screw.

2. The edge-sealing mechanism of the bag-making machine according to claim 1, characterized in that, Lower fixing plates are fixedly installed on the outer walls on the mutually remote sides of the two side supporting plates. The plurality of fixed sliding rods are respectively fixedly installed on the two lower fixing plates. Upper fixing plates are fixedly installed on the outer walls on the mutually remote sides of the two moving beams. The plurality of fixed sliding rods all penetrate through the corresponding upper fixing plates and are slidably connected to the corresponding fixing plates.

3. The edge-sealing mechanism of the bag-making machine according to claim 1, wherein, A plurality of hand rods are fixedly installed on the outer ring of the rotatable wheel. Anti-slip balls are fixedly sleeved at one ends of the plurality of hand rods far away from the rotatable wheel.

4. The edge sealing mechanism of the bag making machine according to claim 3, characterized in that, A screw rod penetrates through and is threadedly installed on the rotatable wheel. A contact head is rotatably sleeved at one end of the screw rod close to the lifting plate.

5. The edge-sealing mechanism of the bag-making machine according to claim 4, characterized in that, A friction ring is fixedly installed on the lifting plate close to the rotatable wheel. The contact head is in contact with the friction ring.

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