Pressurizing type material pressing mechanism of bag opening machine

Abstract

The utility model provides a pressurization type material pressing mechanism of a pocket opening machine, and belongs to the technical field of sewing machines. The problem that an existing material pressing mechanism is not high in working stability and sewing quality is solved. The pressurization type material pressing mechanism of the bag opening machine comprises a base, a pressurization air cylinder, a vertically-arranged tension spring, a supporting plate connected to the bottom of the base and a material pressing support with a material pressing toothed plate arranged at the front end, the rear end of the material pressing support is connected to the base in a sliding mode in the vertical direction, and a lifting air cylinder which is connected with the material pressing support and can drive the material pressing support to move up and down is arranged on the base. The upper end of the tension spring is connected to the base, the lower end of the tension spring is connected to the material pressing support, the pressurizing air cylinder is fixedly connected to the base, a piston rod of the pressurizing air cylinder is vertically arranged and connected with the material pressing support, and when the material pressing support moves downwards to enable the material pressing toothed plate to be located on the surface of the supporting plate, the pressurizing air cylinder can pull or push the material pressing support downwards. The cloth can be stably pressed in the sewing process, the cloth is prevented from moving, and the sewing quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing machine technical field relates to a kind of pressurized material pressing mechanism of bag opening machine. BACKGROUND

[0002] In the clothing processing process, bag opening machine is essential auxiliary processing machinery, it is mainly used to form pocket at the specific position of clothing, it is convenient to carry mobile phone, wallet and small articles.Laser slitting is carried out on the cloth first, then the cloth is moved to two sides by using bag folding structure, and the edge of the bag opening is folded, and then the two layers of lining of the pocket are sewn at the folding position.Press material mechanism is one of the important mechanisms of bag opening machine, because the two pressure teeth plates on the press material mechanism press the front and rear edges of the bag opening respectively when laser slitting and sewing lining, to ensure that the cloth is flat and does not move, so as to ensure the sewing effect and the beauty of the pocket.

[0003] The structure of the existing bag opening machine is disclosed in a kind of sewing equipment and its mold stripper plate quick replacement mechanism (application number: 202322670125.2), including rack, bag opening structure is arranged on the rack, bag opening structure includes bag opening mounting frame, upper clamping plate, main supporting plate fixed on the bottom of bag opening mounting frame and clamping power component for driving upper clamping plate to move to clamp patch, upper clamping plate is connected to the front end of pressure material support, the rear end of pressure material support is connected to the front side of bag opening mounting frame through vertical guide rail assembly, and clamping power component, i.e.gas cylinder, is fixedly connected on the bag opening mounting frame, the pressure material support is driven downward by the gas cylinder to move, so as to drive the upper clamping plate to move downward to the surface of main supporting plate to clamp and fix the cloth.However, due to the heavy weight of the pressure material support itself, plus the weight of the gas cylinder, guide rail and other parts on the pressure material support, the overall weight is heavy, and the front end of the pressure material support is in a suspended state, at this time, the overall weight of the pressure material support and its parts is borne by the gas cylinder, which will cause the gas cylinder to be in a high load state for a long time, causing wear of the internal parts of the gas cylinder, reducing the service life of the gas cylinder and the working stability, and thus reducing the stability of the pressure material support during lifting, ultimately affecting the working stability of the bag opening machine and the sewing quality.

[0004] In the bag opening structure, the rear end of the pressure material support for fixing the upper clamping plate is connected to the front side of the bag opening mounting frame through the vertical guide rail assembly, and the clamping power component, i.e.gas cylinder, is fixedly connected on the bag opening mounting frame, the pressure material support is driven downward by the gas cylinder to move, so as to drive the upper clamping plate to move downward to the surface of main supporting plate to clamp and fix the cloth.However, due to the heavy weight of the pressure material support itself, plus the weight of the gas cylinder, guide rail and other parts on the pressure material support, the overall weight is heavy, and the front end of the pressure material support is in a suspended state, at this time, the overall weight of the pressure material support and its parts is borne by the gas cylinder, which will cause the gas cylinder to be in a high load state for a long time, causing wear of the internal parts of the gas cylinder, reducing the service life of the gas cylinder and the working stability, and thus reducing the stability of the pressure material support during lifting, ultimately affecting the working stability of the bag opening machine and the sewing quality. SUMMARY

[0005] The utility model aims at the above problems existing in the prior art, and provides a kind of pressurized material pressing mechanism of bag opening machine, and the utility model solves the problem that the working stability and sewing quality of the existing press material mechanism are not high.

[0006] The utility model discloses a pressurization type material pressing mechanism of bag opening machine, including base, the supporting plate of connection in base bottom and the material pressing support with material pressing tooth plate in front end, the rear end of material pressing support is connected on base along vertical sliding, be equipped with with material pressing support connection and can drive material pressing support up and down movement's lifting cylinder on base, its characterized in that, this pressurization type material pressing mechanism still includes pressurization cylinder and vertical setting's tension spring, the upper end of tension spring is connected on base and lower end is connected on material pressing support, pressurization cylinder is fixedly connected on base, the piston rod of pressurization cylinder is vertical setting and is connected with material pressing support, when material pressing support moves down to make material pressing tooth plate be located at supporting plate surface, pressurization cylinder can pull down or push the material pressing support down.

[0007] The material pressing support is in the lifted suspended state in the initial state, thereby facilitating the laying of the cloth on the supporting plate. When sewing work needs to be performed, the material pressing support is moved downward by the lifting cylinder. When the material pressing tooth plate is located at the surface of the supporting plate, the pressurization cylinder is started to pull down or push the material pressing support, so that the material pressing tooth plate on the material pressing support presses the cloth, and the cloth is prevented from moving during sewing.

[0008] In the pressurization type material pressing mechanism, although the material pressing support also has a large weight, the vertically arranged tension spring has the function of pulling up the material pressing support, so that the weight of the material pressing support can be offset by the function of the tension spring after the material pressing support is lifted. Therefore, the weight of the material pressing support is not entirely borne by the lifting cylinder, and thus the lifting cylinder can be prevented from being in a high-load state for a long time, thereby protecting the lifting cylinder, ensuring that the lifting cylinder always has good working performance, prolonging the service life of the lifting cylinder, and further enabling the lifting cylinder to stably drive the material pressing support to move up and down, thereby improving the working stability of the material pressing mechanism. Since the tension spring is arranged, when the lifting cylinder drives the tension spring to move downward to make the material pressing tooth plate be located at the surface of the supporting plate, the tension spring is in a pulled-up state and exerts an upward pulling force on the material pressing support. At this time, the problem of how to ensure that the material pressing tooth plate stably presses the cloth needs to be considered. Therefore, the pressurization type material pressing mechanism further comprises a pressurization cylinder. When the material pressing support moves downward to make the material pressing tooth plate be located at the surface of the supporting plate, the pressurization cylinder is started to pull down or push the material pressing support, so that the material pressing support is in a pressed state during sewing, thereby ensuring that the material pressing tooth plate at the front end of the material pressing support can stably press the cloth, preventing the cloth from moving, and ensuring the sewing quality.

[0009] In the pressurization type material pressing mechanism of the bag opening machine, the material pressing support comprises a horizontal base plate and a main sliding plate fixedly connected to the rear end of the base plate, the main sliding plate is slidably connected to the base through a vertical guide rail assembly, a middle connecting plate is connected to the middle part of the main sliding plate in the left-right direction, and the piston rod of the pressurization cylinder is connected to the middle connecting plate.

[0010] The main slide plate is slidably connected to the base through the vertical guide rail assembly, so that the main slide plate and the pressing support connected thereto can stably move up and down, thereby improving the working stability of the pressing mechanism. The middle connecting plate is arranged to facilitate the connection between the pressing cylinder and the main slide plate. Meanwhile, the middle connecting plate is arranged centrally relative to the main slide plate, so that the force of the pressing cylinder acting on the main slide plate is also located at the middle portion of the main slide plate. In this way, the pressing cylinder can more stably drive the main slide plate to move downward and press the cloth downward by the pressing tooth plate, so as to better avoid the movement of the cloth during sewing, thereby improving the sewing effect.

[0011] In the pressing type pressing mechanism of the bag opening machine, the left and right side edges of the main slide plate are respectively connected with side connecting plates, and the number of the lifting cylinders is two. The piston rods of the two lifting cylinders are respectively connected with the side connecting plates at the left and right side edges of the main slide plate. This structure enables the main slide plate to be more balanced under the action of the lifting cylinders, so that the pressing support connected to the main slide plate is more stable during lifting and does not tilt or shake, thereby improving the working stability of the pressing mechanism. In addition, the arrangement of the two lifting cylinders can share the load, so that the load acting on each lifting cylinder is reduced, thereby further prolonging the service life of the lifting cylinder.

[0012] In the pressing type pressing mechanism of the bag opening machine, the number of the tension springs is two, and the lower ends of the two tension springs are respectively connected to the left and right side edges of the main slide plate. This design enables the left and right sides of the main slide plate to be subjected to the action of the tension springs, so that the force is more balanced, and the weight of the pressing support can be better offset by the tension springs, thereby reducing the load of the lifting cylinder. Meanwhile, the pressing support can also be more stable during lifting, avoiding tilting or shaking.

[0013] In the pressing type pressing mechanism of the bag opening machine, the left and right side edges of the base are respectively inserted with upper spring pins, the left and right side edges of the main slide plate are respectively provided with insertion holes, the lower spring pins are inserted in the insertion holes, the upper ends of the tension springs are connected with the upper spring pins at the same side, and the lower ends of the tension springs are connected with the lower spring pins at the same side. The two ends of the tension spring each have a hook, so that the hook can be connected with the upper spring pin and the lower spring pin. The arrangement of the upper spring pin and the lower spring pin not only facilitates manufacturing and reduces cost, but also has the advantage of easy installation while ensuring good installation effect of the tension spring.

[0014] In the pressing type material pressing mechanism of the bag opening machine, the number of the insertion holes on the left and right sides of the main slide plate is at least two, and the insertion holes on the same side are vertically arranged in sequence. Different models may have different sizes and shapes of the pressing support, and the weight of each component on the pressing support may also be different, so the required tension of the tension spring may also be different. At this time, since the insertion holes on the same side are vertically arranged in sequence, the tension of the tension spring can be changed by adjusting the insertion of the lower spring pin into the insertion hole at different height positions, thereby improving the flexibility and universality of the pressing mechanism.

[0015] In the pressing type material pressing mechanism of the bag opening machine, the vertical guide rail assembly includes two vertically spaced vertical guide rails fixedly connected to the front side of the base, and the rear side of the main slide plate is fixedly connected with a sliding block connected with the vertical guide rails, and two tension springs are arranged outside the two vertical guide rails. The two tension springs are arranged outside the two vertical guide rails, so that the installation of the tension springs is not easily blocked by the vertical guide rails, making the installation of the tension springs convenient, and the tension of the tension springs acting on the main slide plate is more stable, the balance of the main slide plate is good, and the tendency of tilting or shaking is not formed, thereby improving the working stability of the pressing type material pressing mechanism.

[0016] In the pressing type material pressing mechanism of the bag opening machine, the side connecting plate is vertically arranged in front of the tension spring on the same side, the cross section of the side connecting plate is L-shaped, and the upper end of the side connecting plate is protruded backward to form a protruding part connected with the piston rod of the lifting cylinder. The side connecting plate of this structure not only has the advantages of convenient manufacturing and low cost, but also can block the tension spring from directly flying out and causing the situation that the worker is injured even if the tension spring is accidentally loosened during installation, debugging or normal operation of the equipment, thereby improving the use safety of the equipment. Therefore, the side connecting plate plays a dual role of transmitting the power of the lifting cylinder and safety protection.

[0017] In the pressing mechanism of the bag opening machine, the pressing cylinder is located between the two vertical guide rails, the middle connecting plate is L-shaped, the lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, and the upper end of the middle connecting plate is bent to the rear side and fixedly connected to the piston rod of the pressing cylinder, so that the pressing cylinder can pull down the pressing support. The middle connecting plate is easy to manufacture and has low cost. The lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, so that the connection between the middle connecting plate and the main slide plate can be facilitated by bolts. The pressing cylinder is installed in the space between the two vertical guide rails, which has high space utilization and compact structure, and the force of the pressing cylinder acting on the main slide plate is located in the middle of the main slide plate, so that the pressing cylinder can more stably drive the main slide plate to move downward and then press the fabric downward by the pressing tooth plate, so as to better avoid the movement of the fabric during sewing, thereby improving the sewing effect.

[0018] In the pressing mechanism of the bag opening machine, the pressing cylinder is located between the two vertical guide rails, the middle connecting plate is L-shaped, the lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, and the upper end of the middle connecting plate is bent to the rear side and fixedly connected to the piston rod of the pressing cylinder, so that the pressing cylinder can pull down the pressing support. The middle connecting plate is easy to manufacture and has low cost. The lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, so that the connection between the middle connecting plate and the main slide plate can be facilitated by bolts. The pressing cylinder is installed in the space between the two vertical guide rails, which has high space utilization and compact structure, and the force of the pressing cylinder acting on the main slide plate is located in the middle of the main slide plate, so that the pressing cylinder can more stably drive the main slide plate to move downward and then press the fabric downward by the pressing tooth plate, so as to better avoid the movement of the fabric during sewing, thereby improving the sewing effect.

[0019] In the pressing mechanism of the bag opening machine, the pressing cylinder is located between the two vertical guide rails, the middle connecting plate is L-shaped, the lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, and the upper end of the middle connecting plate is bent to the rear side and fixedly connected to the piston rod of the pressing cylinder, so that the pressing cylinder can pull down the pressing support. The middle connecting plate is easy to manufacture and has low cost. The lower end of the middle connecting plate is fixedly connected to the front side of the main slide plate, so that the connection between the middle connecting plate and the main slide plate can be facilitated by bolts. The pressing cylinder is installed in the space between the two vertical guide rails, which has high space utilization and compact structure, and the force of the pressing cylinder acting on the main slide plate is located in the middle of the main slide plate, so that the pressing cylinder can more stably drive the main slide plate to move downward and then press the fabric downward by the pressing tooth plate, so as to better avoid the movement of the fabric during sewing, thereby improving the sewing effect.

[0020] Compared with the prior art, the pressing mechanism of the bag opening machine has the following advantages:

[0021] 1. When the bag opening machine is folding the edge, a limiting plate is needed to support the edge of the bag opening to ensure a neat edge. During the needle sewing process, the limiting plate needs to retract and move away from the edge of the bag opening, allowing the needle to pass through the fabric at the edge of the bag opening for sewing. In this pressing mechanism, although a pressure limiting mechanism is used to restrict the thrust when the lifting cylinder moves down before the needle sewing, the weight of components such as the front toothed plate, main slide plate, pressing support, guide rail, and rear toothed plate support still exerts excessive downward pressure on the front toothed plate. At this time, the tension spring can also provide upward tension, reducing the pressure of the front toothed plate on the fabric, allowing the limiting plate to retract stably and smoothly. This avoids the fabric being pulled when the limiting plate retracts due to excessive pressure, thus ensuring the flatness of the fabric and improving the sewing effect. After the limit plate retracts, the pressurizing cylinder can move the main slide downwards, which in turn drives the front tooth plate bracket and the front tooth plate to move downwards, so that the front tooth plate can stably press down on the fabric, preventing the fabric from moving during the sewing process, thereby improving the sewing effect.

[0022] 2. In this pressure-type pressing mechanism, the vertically arranged tension spring has the function of pulling the pressing bracket upward, so that after the pressing bracket is lifted, the tension spring can offset the weight of the pressing bracket. The weight of the pressing bracket will not be entirely borne by the lifting cylinder. Therefore, it can avoid the lifting cylinder being in a high-load state for a long time, thereby protecting the lifting cylinder, extending its service life, and improving the working stability of the pressing mechanism.

[0023] 3. This pressurized material pressing mechanism is also equipped with a pressurizing cylinder. When the material pressing bracket moves down to the position of the material pressing tooth plate on the surface of the support plate, the pressurizing cylinder is activated to pull down or push the material pressing bracket, so that the material pressing bracket is under pressure during the sewing process, thereby ensuring that the material pressing tooth plate at the front end of the material pressing bracket can stably press the fabric, prevent the fabric from moving, and ensure sewing quality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this utility model.

[0025] Figure 2 This is a partial structural diagram of Embodiment 1 of this utility model.

[0026] Figure 3 This is a schematic diagram of the tension spring's installation structure.

[0027] Figure 4 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0028] In the figure, 1, base; 2, supporting plate; 3, pressure tooth plate; 4, pressure support; 41, base plate; 42, main slide plate; 421, plug-in hole; 43, pressure frame; 5, lifting cylinder; 6, tension spring; 7, pressure cylinder; 8, middle connecting plate; 9, side connecting plate; 91, protruding part; 10, upper spring pin; 11, lower spring pin; 12, vertical guide rail; 13, sliding block; 14, mounting plate; 15, cylinder support; 16, pushing cylinder. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0030] Embodiment one

[0031] As shown in Figure 1 and Figure 2 , the pressure type pressure mechanism of the bag opening machine comprises a base 1, a supporting plate 2 connected to the bottom of the base 1 and a pressure support 4 provided with a pressure tooth plate 3 at the front end, the rear end of the pressure support 4 is connected to the base 1 in a vertical sliding manner, the base 1 is provided with a lifting cylinder 5 connected with the pressure support 4 and capable of driving the pressure support 4 to move up and down, characterized in that the pressure type pressure mechanism further comprises a tension spring 6 and a pressure cylinder 7 arranged vertically, the upper end of the tension spring 6 is connected to the base 1 and the lower end is connected to the pressure support 4, the pressure cylinder 7 is fixedly connected to the base 1, the piston rod of the pressure cylinder 7 is connected with the pressure support 4, and when the pressure support 4 moves downward to make the pressure tooth plate 3 located at the surface of the supporting plate 2, the pressure cylinder 7 can pull or push the pressure support 4 downward.

[0032] As shown in Figure 1 and Figure 2 , the pressure support 4 comprises a base plate 41 arranged horizontally, a main slide plate 42 fixedly connected to the rear end of the base plate 41 and a pressure frame 43 fixedly connected to the front end of the base plate 41, the upper part of the base plate 41 is provided with a mounting plate 14, the main slide plate 42 is connected to the base 1 in a sliding manner through a vertical guide rail assembly, the rear end of the mounting plate 14 is connected to the main slide plate 42 in a vertical sliding manner, one pressure tooth plate 3 is fixedly connected to the front end of the mounting plate 14 and the upper part of the pressure frame 43, the middle part of the main slide plate 42 in the left-right direction is connected with a middle connecting plate 8, and the piston rod of the pressure cylinder 7 is connected with the middle connecting plate 8. The main slide plate 42 is further connected with a pushing cylinder 16 capable of pushing the mounting plate 14 downward through a cylinder support 15.

[0033] As shown in Figure 1 , the left and right sides of the main slide plate 42 are respectively connected with side connecting plates 9, the number of the lifting cylinders 5 is two, and the piston rods of the two lifting cylinders 5 are respectively connected with the side connecting plates 9 at the left and right sides of the main slide plate 42. Figure 2As shown, the number of pull springs 6 is two, and the lower ends of the two pull springs 6 are respectively connected to the left and right sides of the main slide plate 42. Figure 2 and Figure 3 As shown, the left and right sides of the base 1 are respectively inserted with upper spring pins 10, the left and right sides of the main slide plate 42 are respectively provided with insertion holes 421, and the insertion holes 421 are respectively inserted with lower spring pins 11. The upper end of the pull spring 6 is connected to the upper spring pin 10 on the same side, and the lower end is connected to the lower spring pin 11 on the same side. Specifically, the number of insertion holes 421 on the left and right sides of the main slide plate 42 is at least two, and each insertion hole 421 on the same side is vertically spaced. Different models may have different sizes and shapes of the pressing support 4, and the weight of the pressing support 4 and other components added to the pressing support 4 may also be different, so the required pulling force of the pull spring 6 may also be different. At this time, since each insertion hole 421 on the same side is vertically spaced, the pulling force of the pull spring 6 can be changed by adjusting the insertion of the lower spring pin 11 into the insertion hole 421 at a different height position, thereby improving the flexibility and versatility of the pressing mechanism.

[0034] As shown, Figure 2 The vertical guide rail assembly includes two left and right spaced vertical guide rails 12 fixedly connected to the front side of the base 1, and the rear side of the main slide plate 42 is fixedly connected with a sliding block 13 slidingly connected with the vertical guide rail 12. Two pull springs 6 are respectively arranged outside the two vertical guide rails 12. As shown in Figure 1 The side connecting plate 9 is vertically arranged in front of the pull spring 6 on the same side, and the cross section of the side connecting plate 9 is L-shaped. The upper end of the side connecting plate 9 protrudes backward to form a protruding portion 91 connected with the piston rod of the lifting cylinder 5. The pressing cylinder 7 is located between the two vertical guide rails 12, and the middle connecting plate 8 is L-shaped. The lower end of the middle connecting plate 8 is fixedly connected to the front side of the main slide plate 42, and the upper end of the middle connecting plate 8 is bent to the rear side and fixedly connected with the piston rod of the pressing cylinder 7, so that the pressing cylinder 7 can pull the pressing support 4 downward.

[0035] In the initial state, the lifting cylinder 5 lifts the pressing support 4, so as to facilitate the laying of the cloth on the supporting plate 2. When sewing work is needed, the pressing support 4 and the mounting plate 14 are moved downward by the lifting cylinder 5, and when they are moved downward to the position where the two pressing tooth plates 3 are located on the surface of the supporting plate 2, the pressing cylinder 7 and the pushing cylinder 16 are started to pull or push the pressing support 4 and the mounting plate 14 downward, so that the two pressing tooth plates 3 press the cloth, ensuring that the cloth does not move during sewing, thereby improving the sewing quality.

[0036] Example Two

[0037] This embodiment is basically the same as the structure and principle of example one, and the difference is that, as shown in Figure 4As shown, the pressurizing cylinder 7 is located on the upper side of the middle connecting plate 8, and the piston rod of the pressurizing cylinder 7 extends downward and can push down the middle connecting plate 8, so as to push down the pressure support 4 by the pressurizing cylinder 7 when the pressure tooth plate 3 is located at the surface of the supporting plate 2. The structure can facilitate the installation and maintenance of the pressurizing cylinder 7 because the pressurizing cylinder 7 is located on the upper side of the middle connecting plate 8.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0039] Although the terms such as 1, base; 2, supporting plate; 3, pressure tooth plate; 4, pressure support; 41, base plate; 42, main slide plate; 421, plug-in hole; 43, pressure frame; 5, lifting cylinder; 6, tension spring; 7, pressurizing cylinder; 8, middle connecting plate; 9, side connecting plate; 91, protruding part; 10, upper spring pin; 11, lower spring pin; 12, vertical guide rail; 13, sliding block; 14, mounting plate; 15, cylinder support; 16, pushing cylinder, etc. are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A pressurized pressing mechanism of a bag opening machine, comprising a base (1), a supporting plate (2) connected to the bottom of the base (1), and a pressing support (4) provided with a pressing tooth plate (3) at the front end, the rear end of the pressing support (4) being connected to the base (1) in vertical sliding mode, and a lifting cylinder (5) being provided on the base (1) and connected to the pressing support (4) to drive the pressing support (4) to move up and down, characterized in that, The pressurizing type pressing mechanism further comprises a pressurizing cylinder (7) and a vertically arranged tension spring (6), the upper end of the tension spring (6) is connected to the base (1) and the lower end is connected to the pressing support (4), the pressurizing cylinder (7) is fixedly connected to the base (1), the piston rod of the pressurizing cylinder (7) is vertically arranged and connected to the pressing support (4), when the pressing support (4) moves downward to the position where the pressing tooth plate (3) is located on the surface of the supporting plate (2), the pressurizing cylinder (7) can pull or push the pressing support (4) downward.

2. The pressurized pressure mechanism of a bag opener according to claim 1, characterized in that, The pressing support (4) comprises a horizontally arranged base plate (41) and a main sliding plate (42) fixedly connected to the rear end of the base plate (41), the main sliding plate (42) is slidably connected to the base (1) through a vertical guide rail assembly, the middle part of the main sliding plate (42) in the left-right direction is connected with a middle connecting plate (8), and the piston rod of the pressurizing cylinder (7) is connected to the middle connecting plate (8).

3. The pressurized pressure mechanism of a bag opener according to claim 2, characterized in that, The left and right sides of the main sliding plate (42) are respectively connected with side connecting plates (9), and the number of the lifting cylinders (5) is two, the piston rods of the two lifting cylinders (5) are respectively connected to the side connecting plates (9) at the left and right sides of the main sliding plate (42).

4. A pressurized pressure mechanism of a bag opener according to claim 2 or 3, characterized in that The number of the tension springs (6) is two, and the lower ends of the two tension springs (6) are respectively connected to the left and right sides of the main sliding plate (42).

5. The pressurized pressure mechanism of a bag opener according to claim 4, characterized in that, The left and right sides of the base (1) are respectively inserted with upper spring pins (10), the left and right sides of the main sliding plate (42) are respectively provided with insertion holes (421), the insertion holes (421) are respectively inserted with lower spring pins (11), the upper end of the tension spring (6) is connected to the upper spring pin (10) at the same side, and the lower end is connected to the lower spring pin (11) at the same side.

6. The pressurized pressure mechanism of a bag opener according to claim 5, characterized in that, The number of the insertion holes (421) at the left and right sides of the main sliding plate (42) is at least two, and the insertion holes (421) at the same side are vertically and sequentially arranged.

7. The pressurized pressure mechanism of a bag opener according to claim 4, characterized in that, The vertical guide rail assembly comprises two vertically arranged vertical guide rails (12) which are fixedly connected to the front side of the base (1) and are spaced apart in the left-right direction, the rear side of the main sliding plate (42) is fixedly connected with sliding blocks (13) which are slidably connected to the vertical guide rails (12), and the two tension springs (6) are respectively arranged outside the two vertical guide rails (12).

8. The pressurized pressure mechanism of a bag opener according to claim 3, characterized in that, The side connecting plates (9) are vertically arranged and located in front of the tension springs (6) at the same side, the cross section of the side connecting plate (9) is L-shaped, the upper end of the side connecting plate (9) is protruded backward to form a protruding part (91) which is connected to the piston rod of the lifting cylinder (5).

9. The pressurized pressure mechanism of a bag opener according to claim 7, characterized in that, The pressurizing cylinder (7) is located between the two vertical guide rails (12), the middle connecting plate (8) is L-shaped, the lower end of the middle connecting plate (8) is fixedly connected to the front side of the main sliding plate (42), the upper end of the middle connecting plate (8) is bent to the rear side and fixedly connected to the piston rod of the pressurizing cylinder (7) so that the pressurizing cylinder (7) can pull the pressing support (4) downward.

10. The pressurized pressure mechanism of a bag opener according to claim 7, characterized in that, The pressurizing cylinder (7) is located above the middle connecting plate (8), the piston rod of the pressurizing cylinder (7) is downwardly protruded and can push the middle connecting plate (8) downward.

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