Valve bag making machine

Abstract

The invention discloses a valve bag making machine. The valve bag making machine comprises a raw material placing frame, a conveying platform, a control table and an emergency stop controller arranged on the control table. And a mounting seat, a retaining piece and a pressing piece are arranged in the sudden stop controller. When the pressing piece is pushed, the pressing piece is kept to drive the limiting terminal to move downwards, the limiting terminal is disconnected from the conductive terminal, one end of the limiting terminal is kept to move in the sliding area, and the other end of the limiting terminal is kept to move downwards in the movable area and crosses the keeping block to reach the lower end of the keeping block to be limited. According to the valve bag making machine, pressure is applied to the pressing piece, so that the pressing piece drives the limiting terminal located at the lower end to move downwards to be separated from the conductive terminal, and a circuit is kept disconnected. And meanwhile, through the cooperation of the limiting body and the retaining block, the position of the limiting body is limited, so that the situation that the conductive terminal is electrically connected with the limiting terminal, and a circuit needs to be connected by pressing again is avoided. The structure is compact, design is ingenious, and operation is easy.

Description

Technical Field

[0001] The present invention relates to the technology of bag-making machines, and in particular, to a valve bag-making machine. Background Art

[0002] Bag-making machines are very common devices at present, used for making packaging bags and various bags. However, emergencies are likely to occur during the actual use of bag-making machines, such as foreign objects or the sleeves of workers being involved, resulting in emergency accidents. Therefore, an emergency stop controller needs to be set on the bag-making machine for emergencies.

[0003] In various factories, prominent red buttons can be seen on some large and medium-sized machinery and equipment or electrical appliances. Standard ones should be marked with red fonts having the same meaning as "Emergency Stop". Such buttons can be collectively referred to as emergency stop buttons. By simply pressing this button down directly, the entire device can be quickly stopped or some transmission parts can be released. To restart the device, this button must be released, that is, by rotating it clockwise by about 45° and then releasing it, the pressed part will pop up, which means "released". Explosion-proof emergency stop buttons are mainly used in explosive gas environments, combustible dust and other dangerous places. At present, during the use of explosion-proof emergency stop buttons, accidental pressing often causes the device to stop suddenly, easily resulting in unnecessary losses and troubles. Summary of the Invention

[0004] In order to solve the defects existing in the above-mentioned prior art, the present invention provides a valve bag-making machine.

[0005] The technical solution of the present invention is realized as follows:

[0006] A valve bag-making machine includes:

[0007] A raw material placement rack for placing raw materials for preparing valve bags;

[0008] A transfer platform cooperating with the raw material placement rack, on which a transfer mechanism and a cutting mechanism are provided;

[0009] A control console arranged on the side of the transfer platform, on which an emergency stop controller is provided. The inside of the emergency stop controller includes:

[0010] A mounting seat arranged inside the emergency stop controller. The mounting seat is provided with a mounting rod and symmetrically arranged positioning columns, and a sliding area is formed between the positioning columns;

[0011] A retaining member, the upper end of the retaining member is provided with a first hinge hole, a hinge rod is arranged in the first hinge hole, the upper end of the retaining member is hinged to the mounting rod through the hinge rod, a movable area is arranged in the middle of the retaining member, and a retaining block is arranged in the middle of the movable area;

[0012] A pressing member, a limiting terminal is arranged at the lower end of the pressing member, one end of the limiting terminal is arranged in the movable area, the other end is arranged in the sliding area, and conductive terminals in contact with the limiting terminal are arranged on the positioning posts;

[0013] Push the pressing member, keep the pressing member driving the limiting terminal to move downward, the limiting terminal is disconnected from the conductive terminal, keep one end of the limiting terminal moving in the sliding area, the other end moving downward in the movable area, and passing over the retaining block to reach the lower end of the retaining block and be limited.

[0014] In the present invention, a first positioning rod is arranged in the sliding area, a first spring is sleeved on the first positioning rod, the lower end of the first spring is in contact with the bottom surface of the sliding area, and the upper end is in contact with the limiting terminal.

[0015] In the present invention, the limiting terminal is composed of a mounting body, a contact body and a limiting body, the mounting body connects the contact body and the limiting body, an arc-shaped opening is arranged in the middle of the mounting body, and a conductive column is arranged in the arc-shaped opening.

[0016] In the present invention, a first through hole matching with the first positioning rod is arranged in the middle of the contact body, sliding blocks are symmetrically arranged on the contact body, and a sliding groove matching with the sliding blocks is arranged on the positioning post.

[0017] In the present invention, the limiting body is composed of a first vertical surface and a second vertical surface, a first inclined surface is arranged at the upper ends of the first vertical surface and the second vertical surface, a second inclined surface is arranged at the lower ends, and the width of the first vertical surface is smaller than the width of the second vertical surface.

[0018] In the present invention, a second through hole matching with the limiting terminal is arranged at the lower end of the pressing member, the mounting body is arranged in the second through hole, a fixing hole and a threaded hole communicating with the second through hole are further arranged at the lower end of the pressing member, a bolt is arranged in the threaded hole, the conductive column is arranged in the fixing hole, and the bolt pushes the conductive column into the arc-shaped opening on the mounting body to realize the electrical connection between the conductive column and the limiting terminal.

[0019] In the present invention, a second positioning rod is arranged at the lower end of the retaining member, a third positioning rod coaxially arranged with the second positioning rod is arranged on the mounting seat, and a second spring is sleeved on the second positioning rod and the third positioning rod.

[0020] In the present invention, an upper limit chamber, a lower limit chamber and a blocking chamber are provided in the active area. A first guiding inclined surface, a second guiding inclined surface and a third guiding inclined surface are provided on the inner wall between the upper limit chamber and the lower limit chamber. The lower limit chamber and the blocking chamber are connected through a fourth guiding inclined surface. A fifth guiding inclined surface, a sixth guiding inclined surface and a third vertical surface are provided between the upper limit chamber and the blocking chamber.

[0021] In the present invention, a first protrusion is provided at the upper end of the holding block, and a second protrusion and a third protrusion are provided at the lower end. A limiting chamber is formed between the second protrusion and the third protrusion. A first passing area is formed between the holding block and the second guiding inclined surface, and a second passing area is formed between the holding block and the sixth guiding inclined surface.

[0022] In the present invention, the conductive terminal is composed of a contact section, and symmetrically arranged first inclined sections, second inclined sections and mounting sections. An arc section is provided in the middle of the contact section. An arc area is formed in the middle of the arc section. A through hole is provided in the middle of the arc section. The first inclined section and the second inclined section are connected through an arc part. A first elastic area is formed between the first inclined section and the second inclined section, and a second elastic area is formed between the contact section and the first inclined section.

[0023] Implementing this valve bag making machine of the present invention has the following beneficial effects: To avoid emergencies during operation, an emergency stop controller is provided on the console. By applying pressure to the pressing member, the pressing member drives the limiting terminal at the lower end to move downward and separate from the conductive terminal, keeping the circuit disconnected. At the same time, through the cooperation of the limiting body and the holding block, the position of the limiting body is limited, thereby preventing the electrical connection between the conductive terminal and the limiting terminal, and it is necessary to press again to achieve the electrical connection of the circuit. Its structure is compact, the design is ingenious, and the operation is simple. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of the valve bag making machine of the present invention;

[0025] Figure 2 For Figure 1 Schematic structural diagram of the emergency stop controller in;

[0026] Figure 3 For Figure 2 Internal structural diagram of;

[0027] Figure 4 For Figure 3 Exploded view of;

[0028] Figure 5 For Figure 4 Schematic structural diagram of the mounting seat in;

[0029] Figure 6is Figure 4 Schematic diagram of the holding member structure in

[0030] Figure 7 is Figure 6 front view of

[0031] Figure 8 is Figure 4 perspective view of the pressing member structure in

[0032] Figure 9 is Figure 8 partial enlarged view at A in

[0033] Figure 10 is Figure 4 schematic diagram of the limiting terminal structure in

[0034] Figure 11 is Figure 10 schematic diagram of the structure in another direction of

[0035] Figure 12 is Figure 4 schematic diagram of the conductive terminal structure in

[0036] Figure 13 Schematic diagram of the installation state of the limiting terminal and the holding member structure in the present invention.

[0037] In the figure: raw material placement rack 1, conveying platform 2, control console 3, emergency stop controller 4, conveying mechanism 5, cutting mechanism 6, workbench 7, mounting seat 8, holding member 9, pressing member 10, limiting terminal 11, conductive terminal 12, sliding area 13, movable area 14, holding block 15, mounting rod 16, positioning post 17, bottom plate 18, vertical plate 19, horizontal plate 20, fourth positioning rod 21, third spring 22, first spring 23, first positioning rod 24, first hinge hole 25, hinge rod 26, second hinge hole 27, mounting body 28, contact body 29, limiting body 30, arc-shaped opening 31, conductive column 32, first through hole 33, sliding block 34, chute 35, contact section 36, first inclined section 37, second inclined section 38, mounting section 39, arc-shaped section 40, arc-shaped area 41, through hole 42, arc-shaped portion 43, first elastic area 44, second elastic area 45, first vertical surface 46, second vertical surface 47, first inclined surface 48, second inclined surface 49, second through hole 50, fixing hole 51, threaded hole 52, bolt 53, second positioning rod 54, third positioning rod 55, second spring 56, upper limit chamber 57, lower limit chamber 58, blocking chamber 59, first guiding inclined surface 60, second guiding inclined surface 61, third guiding inclined surface 62, fourth guiding inclined surface 63, fifth guiding inclined surface 64, sixth guiding inclined surface 65, third vertical surface 66, first protrusion 67, second protrusion 68, third protrusion 69, limiting chamber 70, first passing area 71, second passing area 72, first wall surface 73, seventh guiding inclined surface 74, fourth vertical surface 75, eighth guiding inclined surface 76, fifth vertical surface 77, ninth guiding inclined surface 78, sixth vertical surface 79. Detailed implementation

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] As Figures 1 to 13 shown, this valve bag making machine of the present invention includes a raw material placement rack 1, a conveying platform 2, a control console 3, and an emergency stop controller 4. The raw material placement rack 1 places the raw materials for manufacturing valve bags. The wound raw materials are erected on the raw material placement rack 1, and the wound raw materials continuously rotate on the raw material placement rack 1 to achieve the conveyance of the raw materials. The conveying platform 2 cooperates with the raw material placement rack 1 to convey the raw materials that need to be used, and tension stretching is also performed on them during the conveyance to make them flat. At the same time, a conveying mechanism 5 and a cutting mechanism 6 are provided on the conveying platform 2. The conveying mechanism 5 is used to traction the raw materials, and the cutting mechanism 6 cuts the tractioned raw materials to make them into a preset size, and then conveys them to the workbench 7 for the staff to take and use, perform manual operations on them, or transfer them to the next processing equipment for construction operations again.

[0040] The console 3 is arranged on the side of the transfer platform 2. An emergency stop controller 4 is provided on the console 3. The interior of the emergency stop controller 4 includes a mounting base 8, a retaining member 9, and a pressing member 10. The retaining member 9 is used to limit the position of the pressing member 10 so that it can control the contact and separation between the limit terminal 11 and the conductive terminal 12.

[0041] Push the pressing member 10. Keep the pressing member 10 driving the limit terminal 11 to move downward. The limit terminal 11 disconnects from the conductive terminal 12. Keep one end of the limit terminal 11 moving within the sliding area 13 and the other end moving downward within the moving area 14 and passing over the retaining block 15 to reach the lower end of the retaining block 15 and be limited.

[0042] The mounting base 8 is arranged inside the emergency stop controller 4. The mounting base 8 is provided with a mounting rod 16 and symmetrically arranged positioning columns 17. A sliding area 13 is formed between the positioning columns 17. At the same time, the mounting base 8 is also provided with a bottom plate 18. A vertical plate 19 is provided on the bottom plate 18. A horizontal plate 20 is provided on the vertical plate 19. The mounting rod 16 is arranged on the bottom plate 18, and the positioning columns 17 are arranged on the horizontal plate 20. There is a certain distance difference between the horizontal plate 20 and the bottom plate 18. The bottom plate 18 can be installed inside the emergency stop controller 4 by pins.

[0043] A fourth positioning rod 21 is also provided on the horizontal plate 20. A third spring 22 is arranged on the fourth positioning rod 21. The third spring 22 is used to cooperate with the first spring 23 to support the pressing member 10 so that the pressing member 10 receives an upward elastic force.

[0044] A first positioning rod 24 is arranged in the sliding area 13. A first spring 23 is sleeved on the first positioning rod 24. The lower end of the first spring 23 contacts the bottom surface of the sliding area 13, and the upper end contacts the limit terminal 11.

[0045] A first hinge hole 25 is provided at the upper end of the retaining member 9. A hinge rod 26 is arranged in the first hinge hole 25. The upper end of the retaining member 9 is hinged on the mounting rod 16 through the hinge rod 26. An activity area 14 is provided in the middle of the retaining member 9. A retaining block 15 is provided in the middle of the activity area 14. A second hinge hole 27 cooperating with the hinge rod 26 is provided on the mounting rod 16.

[0046] A limiting terminal 11 is provided at the lower end of the pressing member 10. One end of the limiting terminal 11 is arranged in the active area 14, and the other end is arranged in the sliding area 13. The limiting terminal 11 is composed of a mounting body 28, a contact body 29 and a limiting body 30. The mounting body 28 connects the contact body 29 and the limiting body 30. An arc-shaped opening 31 is provided in the middle of the mounting body 28, and a conductive column 32 is arranged in the arc-shaped opening 31. The conductive column 32 is an electric wire, and the conductive terminal 12 is connected to another electric wire. The electrical connection of the two electric wires is realized through the limiting terminal 11 and the conductive terminal 12. Both the limiting terminal 11 and the conductive terminal 12 are made of conductive materials.

[0047] A first through hole 33 matching with the first positioning rod 24 is provided in the middle of the contact body 29. Symmetrically arranged sliding blocks 34 are also provided on the contact body 29. A sliding groove 35 matching with the sliding blocks 34 is provided on the positioning column 17. Through the cooperation of the sliding groove 35 and the sliding blocks 34, the contact body 29 is prevented from offset sliding.

[0048] A conductive terminal 12 contacting the limiting terminal 11 is provided on the positioning column 17 and the positioning column 17. The conductive terminal 12 is composed of a contact section 36, symmetrically arranged first inclined sections 37, second inclined sections 38 and a mounting section 39. An arc section 40 is provided in the middle of the contact section 36. An arc area 41 is formed in the middle of the arc section 40. A through hole 42 is provided in the middle of the arc section 40. The first positioning column 17 is arranged in the through hole 42.

[0049] The first inclined section 37 and the second inclined section 38 are connected by an arc portion 43. A first elastic area 44 is formed between the first inclined section 37 and the second inclined section 38. A second elastic area 45 is formed between the contact section 36 and the first inclined section 37. When an external force pushing upward from the contact body 29 acts on the arc section 40, the conductive terminal 12 can be pushed by the contact body 29, causing it to deform, and the first elastic area 44 and the second elastic area 45 are compressed.

[0050] The limiting body 30 is composed of a first vertical surface 46 and a second vertical surface 47. A first inclined surface 48 is provided at the upper ends of the first vertical surface 46 and the second vertical surface 47, and a second inclined surface 49 is provided at the lower ends. The width of the first vertical surface 46 is smaller than the width of the second vertical surface 47.

[0051] The lower end of the pressing member 10 is provided with a second through hole 50 that cooperates with the limit terminal 11. The mounting body 28 is disposed within the second through hole 50. The lower end of the pressing member 10 is further provided with a fixing hole 51 and a threaded hole 52 that communicate with the second through hole 50. A bolt 53 is disposed within the threaded hole 52. The fourth positioning post 17 cooperates with the bolt 53. The upper end of the third spring 22 is sleeved outside the bolt 53, and the bolt 53 realizes the positioning of the third spring 22. The conductive post 32 is disposed within the fixing hole 51. The bolt 53 pushes the conductive post 32 into the arc-shaped opening 31 on the mounting body 28, realizing the electrical connection between the conductive post 32 and the limit terminal 11.

[0052] When the bolt 53 is tightened, the conductive post 32 is pushed and fixed within the fixing hole 51, and at the same time is restricted within the arc-shaped opening 31, maintaining the position of the limit terminal 11.

[0053] The lower end of the retaining member 9 is provided with a second positioning rod 54. The mounting base 8 is provided with a third positioning rod 55 that coincides with the axis of the second positioning rod 54. A second spring 56 is sleeved on the second positioning rod 54 and the third positioning rod 55. Due to the restriction of the second spring 56, after the retaining member 9 is pushed by the limiting body 30 to rotate, it can be reset under the elastic force of the second spring 56, so that the retaining member 9 is always vertically downward.

[0054] The active area 14 is provided with an upper limit chamber 57, a lower limit chamber 58, and a blocking chamber 59. The inner wall between the upper limit chamber 57 and the lower limit chamber 58 is provided with a first guiding inclined surface 60, a second guiding inclined surface 61, and a third guiding inclined surface 62. The lower limit chamber 58 and the blocking chamber 59 are connected by a fourth guiding inclined surface 63. A fifth guiding inclined surface 64, a sixth guiding inclined surface 65, and a third vertical surface 66 are provided between the upper limit chamber 57 and the blocking chamber 59.

[0055] The first guiding inclined surface 60, the second guiding inclined surface 61, the third guiding inclined surface 62, the fourth guiding inclined surface 63, the fifth guiding inclined surface 64, the sixth guiding inclined surface 65, and the third vertical surface 66 are all used to guide the limiting body 30 so that it can move to a specified position along.

[0056] The upper end of the holding block 15 is provided with a first protrusion 67, and the lower end is provided with a second protrusion 68 and a third protrusion 69. A limiting chamber 70 is formed between the second protrusion 68 and the third protrusion 69. A first passing area 71 is formed between the holding block 15 and the second guiding inclined surface 61, and a second passing area 72 is formed between the holding block 15 and the sixth guiding inclined surface 65.

[0057] The lower limit chamber 58 is provided with a first wall surface 73. The first wall surface 73 is arranged in parallel with the second vertical surface 47 on the limiting body 30. However, there is a gap between the first wall surface 73 and the second vertical surface 47 and they do not extend and coincide. Therefore, when the limiting body 30 enters the lower limit chamber 58, the first wall surface 73 will not come into contact with the second vertical surface 47.

[0058] The limiting chamber 70 is provided with a seventh guiding inclined surface 74 and a fourth vertical surface 75. The seventh guiding inclined surface 74 is arranged in parallel with the first inclined surface 48 of the limiting body 30. The first wall surface 73 and the second vertical surface 47 are located in the middle of the seventh guiding inclined surface 74. The limiting body 30 can be guided by the seventh guiding inclined surface 74 so that when it moves out of the lower limit chamber 58, it can enter the limiting chamber 70 under the guidance of the seventh guiding inclined surface 74.

[0059] An eighth guiding inclined surface 76 and a fifth vertical surface 77 are formed between the first protrusion 67 and the second protrusion 68. A ninth guiding inclined surface 78 and a sixth vertical surface 79 are formed between the first protrusion 67 and the third protrusion 69.

[0060] Since the upper end of the holding member 9 is hinged to the mounting rod 16, when the limiting body 30 moves downward, it can cooperate with the wall surface in the moving area 14 to push the holding member 9 to deflect in angle. The limiting body 30 does not rotate, so the limiting body 30 can only push the holding member 9 to rotate and it itself does not rotate.

[0061] When an emergency occurs, first press the pressing member 10, so that the pressing member 10 drives the limiting terminal 11 at the lower end to move downward, so that the limiting terminal 11 is separated from the conductive terminal 12, realizing the disconnection of the circuit and the stop of the device. The limiting body 30 on the limiting terminal 11 moves from the upper limit chamber 57 towards the holding block 15 and passes through the first passing area 71. At this time, the holding member 9 rotates around the upper hinge rod 26 and reaches the lower limit chamber 58. At this time, the holding member 9 is reset under the elastic force of the second spring 56, so that the limiting body 30 can reach the lower limit chamber 58. Then release the hand. The pressing member 10 moves upward under the elastic force of the first spring 23 and the third spring 22, so that the limiting body 30 enters the limiting chamber 70 for limiting. And in cooperation with the seventh guiding inclined surface 74 and the fourth vertical surface 75, the holding member 9 rotates towards the second protrusion 68 by a certain angle.

[0062] When power supply is needed, simply quickly press the pressing member 10. Before the second spring 56 under force drives the holding member 9 to rotate and reset, through the cooperation of the second inclined surface 49 and the fourth guiding inclined surface 63, the limiting body 30 diffracts along the fourth guiding inclined surface 63 and enters the blocking chamber 59. Since the pressing member 10 is under the force of the first spring 23 and the third spring 22, its moving speed is faster than that of the holding member 9 driven by only the second spring 56 to move and rotate. When the staff releases the hand, the pressing member 10 of the limiting body 30 in the blocking chamber 59 will be quickly pushed upward under the elastic force of the first spring 23 and the third spring 22, and enter the upper limiting chamber 57 through the second passing area 72 for limiting. At this time, the limiting terminal 11 and the conductive terminal 12 are already in contact to achieve electrical connection.

[0063] During use, since the position of the holding block 15 is lower than that of the upper limiting chamber 57, when the pressing member 10 extends to a relatively high position outside the emergency stop controller 4, it can be seen that the circuit is in a connected state, while when it is at a relatively low position, the circuit is in a disconnected state.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve bag making machine, characterized in that, Including: A raw material placement rack for placing raw materials for manufacturing valve bags; A transfer platform cooperating with the raw material placement rack, on which a transfer mechanism and a cutting mechanism are provided; A control console arranged on the side of the transfer platform, on which an emergency stop controller is provided, and the interior of the emergency stop controller includes: A mounting seat arranged inside the emergency stop controller, on which a mounting rod and symmetrically arranged positioning columns are provided, and a sliding area is formed between the positioning columns; A holding member, with a first hinge hole at the upper end, in which a hinge rod is provided, and the upper end of the holding member is hinged to the mounting rod through the hinge rod. There is a movable area in the middle of the holding member, and a holding block is provided in the middle of the movable area; A pressing member, with a limiting terminal at the lower end, one end of the limiting terminal is arranged in the movable area, and the other end is arranged in the sliding area. Conductive terminals in contact with the limiting terminal are provided on the positioning columns; Push the pressing member to keep the pressing member driving the limiting terminal to move downward, the limiting terminal is disconnected from the conductive terminal, keep one end of the limiting terminal moving in the sliding area, the other end moving downward in the movable area, and passing over the holding block to reach the lower end of the holding block to be limited.

2. The valve bag making machine according to claim 1, wherein A first positioning rod is arranged in the sliding area, a first spring is sleeved on the first positioning rod, the lower end of the first spring contacts the bottom surface of the sliding area, and the upper end contacts the limiting terminal.

3. The valve bag making machine according to claim 2, characterized in that, The limiting terminal is composed of a mounting body, a contact body and a limiting body. The mounting body connects the contact body and the limiting body. There is an arc-shaped opening in the middle of the mounting body, and a conductive column is arranged in the arc-shaped opening.

4. The valve bag making machine according to claim 3, characterized in that, A first through hole cooperating with the first positioning rod is provided in the middle of the contact body, and symmetrically arranged sliding blocks are also provided on the contact body. A sliding groove cooperating with the sliding block is provided on the positioning column.

5. The valve bag making machine according to claim 4, wherein, The limiting body is composed of a first vertical surface and a second vertical surface. The upper ends of the first vertical surface and the second vertical surface are provided with a first inclined surface, and the lower ends are provided with a second inclined surface. The width of the first vertical surface is smaller than the width of the second vertical surface.

6. The valve bag making machine according to claim 5, wherein A second through hole cooperating with the limiting terminal is provided at the lower end of the pressing member, the mounting body is arranged in the second through hole, and a fixing hole and a threaded hole communicating with the second through hole are also provided at the lower end of the pressing member. A bolt is arranged in the threaded hole, and the conductive column is arranged in the fixing hole. The bolt pushes the conductive column into the arc-shaped opening on the mounting body to realize the electrical connection between the conductive column and the limiting terminal.

7. The valve bag making machine according to claim 1, characterized in that, A second positioning rod is provided at the lower end of the holding member, and a third positioning rod coaxially arranged with the axis of the second positioning rod is provided on the mounting seat. A second spring is sleeved on the second positioning rod and the third positioning rod.

8. The valve bag making machine according to claim 1, characterized in that, An upper limiting chamber, a lower limiting chamber and a blocking chamber are provided in the movable area. First guiding inclined surfaces, second guiding inclined surfaces and third guiding inclined surfaces are provided on the inner wall between the upper limiting chamber and the lower limiting chamber. The lower limiting chamber and the blocking chamber are connected through a fourth guiding inclined surface. Fifth guiding inclined surfaces, sixth guiding inclined surfaces and a third vertical surface are provided between the upper limiting chamber and the blocking chamber.

9. The valve bag making machine according to claim 8, characterized in that, The upper end of the holding block is provided with a first protrusion, and the lower end is provided with a second protrusion and a third protrusion. A limiting chamber is formed between the second protrusion and the third protrusion. A first passing area is formed between the holding block and the second guiding inclined surface, and a second passing area is formed between the holding block and the sixth guiding inclined surface.

10. The valve bag making machine according to claim 1, characterized in that, The conductive terminal is composed of a contact section, and a first inclined section, a second inclined section and a mounting section which are symmetrically arranged. An arc section is arranged in the middle of the contact section. An arc area is formed in the middle of the arc section. A through hole is arranged in the middle of the arc section. The first inclined section and the second inclined section are connected by an arc portion. A first elastic area is formed between the first inclined section and the second inclined section. A second elastic area is formed between the contact section and the first inclined section.

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