A needle punching device for a needle punching machine used in filter bag production

Abstract

This utility model discloses a needle-punching device for a needle-punching machine used in filter bag production. The device relates to the field of filter bag production technology and includes a frame with a U-shaped structure. A reciprocating drive mechanism is mounted on the frame to drive the needle-punching mechanism to move up and down reciprocally. A mounting component is located inside the frame, and its top is connected to the output end of the reciprocating drive mechanism. Multiple needle-punching components are mounted on the mounting component and are limited by a limiting mechanism to perform needle-punching on the filter bags. This needle-punching device for filter bag production uses a bidirectional motor to drive a drive cam and an auxiliary cam, achieving high-frequency reciprocating motion of the needle-punching components. Combined with the lateral spacing adjustment of the slider within the limiting groove, the needle-punching density can be flexibly adjusted according to the filter bag type, significantly improving the equipment's adaptability and production flexibility for different filter bags.

Description

Technical Field

[0001] This utility model relates to the field of filter bag production technology, specifically to a needle punching device for a needle punching machine used in filter bag production. Background Technology

[0002] Filter bags possess excellent chemical stability and heat resistance, representing the highest performance in the filter media industry and the most advanced type of commonly used filter material, achieving high levels of filtration efficiency and precision. However, most existing filter bags are made of needle-punched material, which has relatively poor filtration strength. Furthermore, filter bags are often subjected to strong air impacts during operation, leading to severe deformation and further diminishing their dust removal effectiveness. Therefore, there is an urgent need to design a high-strength composite needle-punched filter bag.

[0003] The utility model patent with authorization announcement number CN212000136U discloses a needle punching device for producing dust collector filter bag materials, including a working machine box. The top surface of the working machine box is equipped with a boss and a conveyor belt. The conveyor belt is located on one side of the boss. The top surface of the boss is fixedly connected with a vertical rod and a support column. The support column is located on one side of the vertical rod. A drive motor is installed at the top of the vertical rod. The drive motor is coaxially connected to one end of an L-shaped guide rod. The other end of the guide rod is fixedly connected to a slider.

[0004] As shown in the above utility model, existing needle punching equipment uses a conveyor belt to facilitate the transfer of filter bag material. A cylinder drives a pneumatic rod, which in turn drives a pressure foot to repeatedly fix the material. A drive motor then drives a guide rod, which in turn drives a slider to slide left and right on the outer surface of the guide rod. The controller presses down the operating rod, causing it to move a certain distance along the slide rail to the working machine box. This ensures that the needles work at the same frequency on a horizontal line, thereby enhancing its working stability and improving both the needle punching effect and work efficiency. However, the needle position and density adjustment of existing needle punching equipment relies on manually pressing down the operating rod and fixing the slide rail. It can only achieve horizontal linear needle punching at the same frequency and cannot flexibly adjust the needle spacing and needle punching density according to different filter bag materials (such as coarse filter bags and fine filter bags). This limits its applicability and makes it difficult to meet diverse production needs. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a needle punching device for a needle punching machine used in filter bag production, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a needle-punching device for a needle-punching machine used in filter bag production, comprising:

[0007] The frame is configured as a U-shaped structure, and a reciprocating drive mechanism is provided on the frame to drive the needle-punching mechanism to move up and down reciprocally;

[0008] The mounting component is located inside the frame, and its top is connected to the output end of the reciprocating drive mechanism.

[0009] A needle-punching component is disposed on an mounting component. Multiple needle-punching components are disposed in a movable manner and are limited on the mounting component by a limiting mechanism thereon, for needle-punching the filter bag.

[0010] Preferably, the reciprocating drive mechanism includes a mounting frame fixed at the middle of the top of the frame, a bidirectional motor mounted on the mounting frame, a drive shaft fixed at the output end of the bidirectional motor, and two side-by-side fixed seats fixed on both sides of the top of the mounting frame. One of the fixed seats has an active cam on its inner side, which is connected to the drive shaft, and the other fixed seat has an auxiliary cam on its inner side.

[0011] Preferably, the protruding ends of the active cam and the auxiliary cam are connected by a connecting shaft, a connecting rod is movably connected to the connecting shaft, a guide post is movably connected to the bottom end of the connecting rod via a movable shaft, the lower end of the guide post passes through a through slot opened at the top of the frame and is connected to the mounting component, a guide sleeve is provided on the inner top wall of the frame, and the guide sleeve is connected through the guide post.

[0012] Preferably, the mounting component includes a placement plate, the placement plate having a limit groove, and damping grooves being formed on both sides of the upper surface of the placement plate.

[0013] Preferably, the needle-punching component includes a slider, which is disposed in a limiting groove, and the bottom end of the slider is connected to a needle via internal and external threads.

[0014] Preferably, a slide plate is fixed to the top of the slider, and grooves are provided at both ends of the slide plate. A handle is inserted into the inside of the groove. The lower surface of the handle is connected to the upper surface of the slide plate by two symmetrically arranged springs. Damping blocks are glued to the bottom of both ends of the handle, and the damping blocks correspond to the damping grooves.

[0015] Beneficial effects

[0016] This utility model provides a needle punching device for a needle punching machine used in filter bag production. Compared with the prior art, it has the following advantages:

[0017] 1. The needle punching device of the needle punching machine for filter bag production uses a bidirectional motor to drive the active cam and the auxiliary cam to achieve high-frequency reciprocating motion of the needle punching parts. With the adjustment of the lateral spacing of the slider in the limit groove, the needle punching density can be flexibly adjusted according to the type of filter bag, which significantly improves the adaptability of the equipment to different filter bags and the production flexibility.

[0018] 2. The needle punching device of the needle punching machine used in filter bag production adopts a spring-damping block limiting mechanism. The operator can release the limit and adjust the needle spacing by pulling the handle. After releasing, the damping block and the damping groove (the serrated pattern on the inner wall) are tightly engaged. The position is locked by the friction of the rubber material and the mechanical engagement, which effectively prevents the slider displacement caused by vibration during the needle punching process, ensures the stable operation of the needle, improves the needle punching accuracy and the quality of filter bag production, and reduces the defect rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the mounting component structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the needle-punching component structure of this utility model.

[0022] In the diagram: Frame 1, Mounting bracket 11, Bidirectional motor 12, Drive shaft 13, Fixed base 14, Active cam 15, Auxiliary cam 16, Connecting rod 17, Guide column 18, Guide sleeve 19, Mounting component 2, Placement plate 21, Slide groove 22, Damping groove 23, Needle component 3, Slider 31, Needle 32, Slide plate 33, Groove 34, Handle 35, Spring 36, Damping block 37. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 This utility model provides two technical solutions:

[0025] First embodiment: A needle-punching device for a needle-punching machine used in filter bag production includes a frame 1, a mounting component 2, and a needle-punching component 3. The frame 1 is configured with a U-shaped structure. A reciprocating drive mechanism is provided on the frame 1 to drive the needle-punching component to move up and down reciprocally. The reciprocating drive mechanism includes a mounting frame 11 fixed at the middle of the top of the frame 1. A bidirectional motor 12 is mounted on the mounting frame 11. A transmission shaft 13 is fixed to the output end of the bidirectional motor 12. Two side-by-side fixed seats 14 are fixed on both sides of the top of the mounting frame 11. An active cam 15 is provided on the inner side of one fixed seat 14 and is connected to the transmission shaft 13. An auxiliary cam 15 is provided on the inner side of the other fixed seat 14. The protruding ends of the auxiliary cam 16, the active cam 15, and the auxiliary cam 16 are connected by a connecting shaft. A connecting rod 17 is movably connected to the connecting shaft. The bottom end of the connecting rod 17 is movably connected to a guide post 18 via a movable shaft. The lower end of the guide post 18 passes through a slot opened at the top of the frame 1 and is connected to the mounting part 2. A guide sleeve 19 is provided on the inner top wall of the frame 1. The guide sleeve 19 is connected to the guide post 18. The bidirectional motor 12 drives the active cam 15 to rotate through the transmission shaft 13. The active cam 15 and the auxiliary cam 16 cooperate to drive the connecting rod 17 to rotate. When the connecting rod 17 rotates, it drives the guide post 18 to move up and down along the guide sleeve 19, thereby driving the mounting part 2 to move up and down.

[0026] Specifically, the mounting component 2 is located inside the frame 1, and the top of the mounting component 2 is connected to the output end of the reciprocating drive mechanism. The mounting component 2 includes a placement plate 21, on which a limit groove 22 is provided, and damping grooves 23 are provided on both sides of the upper surface of the placement plate 21.

[0027] The second embodiment differs from the first embodiment in that: the needle-punching element 3 is disposed on the mounting element 2, and multiple needle-punching elements 3 are provided. These multiple needle-punching elements 3 are movably disposed, and are limited on the mounting element 2 by a limiting mechanism. They are used to perform needle-punching work on the filter bag. Each needle-punching element 3 includes a slider 31, which is disposed within a limiting groove 22 and can move within the limiting groove 22. The bottom end of the slider 31 is connected to a needle 32 via internal and external threads, allowing the needle 32 to perform needle-punching work on the filter bag. A sliding plate 33 is fixed to the top of the slider 31. Both ends of the 3 are provided with grooves 34, and handles 35 are inserted into the inside of the grooves 34. The lower surface of the handles 35 is connected to the upper surface of the slide plate 33 through two symmetrically arranged springs 36. Damping blocks 37 are glued to the bottom of both ends of the handles 35. The damping blocks 37 correspond to the damping grooves 23. The damping strips in the damping blocks 37 and the damping grooves 23 are made of rubber material. When in contact, they generate a damping and limiting effect. The damping blocks 37 and the damping grooves 23 cooperate to limit the slide plate 33, thereby limiting the slider 31 in the limiting groove 22, so that the needle 32 can remain stable.

[0028] When the device is in operation, the bidirectional motor 12 is started. After the bidirectional motor 12 starts, it drives the active cam 15 to rotate synchronously through the transmission shaft 13. The active cam 15 and the auxiliary cam 16 are rigidly connected through the connecting shaft to form a double cam linkage structure. When the protruding end of the active cam 15 pushes the connecting rod 17, the protruding end of the auxiliary cam 16 applies force in the opposite direction, causing the connecting rod 17 to produce a reciprocating linear motion (rather than the unidirectional oscillation of a single cam). The connecting rod 17 drives the guide column 18 to make a vertical reciprocating motion within the guide sleeve 19 through the movable shaft (the stroke can be adjusted by the cam eccentricity), thereby driving the mounting part 2 to move up and down as a whole, realizing the high-frequency needle-punching action of the needle-punching part 3 on the filter bag (the needle-punching frequency is adjustable from 50 to 200 times / minute).

[0029] Needle adjustment: The operator pulls handle 35 upwards, compressing spring 36 and disengaging damping block 37 from damping groove 23. At this time, slider 31 can slide left and right within limiting groove 22 to adjust the lateral spacing of needles 32 (minimum adjustment accuracy 1mm) to adapt to the needle density requirements of different filter bags (e.g., coarse filter bags require sparse needles, fine filter bags require dense needles). After releasing handle 35, spring 36 returns to its original position, and damping block 37 (rubber material) adheres tightly to the inner wall of damping groove 23, using friction to lock the position of slide plate 33, preventing slider 31 from shifting due to vibration during needle insertion. The inner wall of damping groove 23 has serrated textures that engage with the raised structure of damping block 37, further enhancing the limiting effect.

[0030] In the embodiments of this application, a T-shaped groove can be provided at the bottom of the slider 31, and a T-shaped protrusion can be provided at the top of the needle 32, which can be locked with a spring buckle to replace the threaded connection.

[0031] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle-punching device for a needle-punching machine used in filter bag production, characterized in that, include: The frame is configured as a U-shaped structure, and a reciprocating drive mechanism is provided on the frame to drive the needle-punching mechanism to move up and down reciprocally; The mounting component is located inside the frame, and its top is connected to the output end of the reciprocating drive mechanism. A needle-punching component is disposed on an mounting component. Multiple needle-punching components are disposed in a movable manner and are limited on the mounting component by a limiting mechanism thereon, for needle-punching the filter bag.

2. The needle punching device for a needle punching machine used in filter bag production according to claim 1, characterized in that: The reciprocating drive mechanism includes a mounting frame fixed at the middle of the top of the frame. A bidirectional motor is mounted on the mounting frame. A transmission shaft is fixed to the output end of the bidirectional motor. Two side-by-side fixed seats are fixed on both sides of the top of the mounting frame. An active cam is provided on the inner side of one of the fixed seats and is connected to the transmission shaft. An auxiliary cam is provided on the inner side of the other fixed seat.

3. The needle punching device for a needle punching machine used in filter bag production according to claim 2, characterized in that: The protruding ends of the active cam and the auxiliary cam are connected by a connecting shaft. A connecting rod is movably connected to the connecting shaft. The bottom end of the connecting rod is movably connected to a guide post through a movable shaft. The lower end of the guide post passes through a slot opened at the top of the frame and is connected to the mounting component. A guide sleeve is provided on the inner top wall of the frame, and the guide sleeve is connected to the guide post through the slot.

4. The needle punching device for a needle punching machine used in filter bag production according to claim 3, characterized in that: The mounting component includes a placement plate with a limit groove and damping grooves on both sides of the upper surface of the placement plate.

5. The needle punching device for a needle punching machine used in filter bag production according to claim 1, characterized in that: The needle-punching component includes a slider, which is disposed in a limiting groove, and the bottom end of the slider is connected to a needle via internal and external threads.

6. The needle punching device for a needle punching machine in filter bag production according to claim 5, characterized in that: The top of the slider is fixed with a slide plate, and grooves are provided at both ends of the slide plate. A handle is inserted into the inside of the groove. The lower surface of the handle is connected to the upper surface of the slide plate by two symmetrically arranged springs. Damping blocks are glued to the bottom of both ends of the handle, and the damping blocks correspond to the damping grooves.

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