Spring viscous damping composite shock absorber for needling machine

Abstract

The invention discloses a spring viscous damping composite shock absorber for a needling machine, and belongs to the technical field of shock absorption devices for non-woven equipment. Which comprises a lower end cover, an upper end cover arranged above the lower end cover and a group of supporting springs uniformly distributed between the lower end cover and the upper end cover, and is characterized in that the lower end cover upwards forms a circle of lower end cover flange, a damping liquid cavity with an upward opening is formed in the lower end cover flange, and the damping liquid cavity is filled with damping liquid; at least one damping sleeve with a downward opening is downwards formed in the position, corresponding to the damping liquid cavity, of the upper end cover, the lower end of the damping sleeve is immersed in the damping liquid in the using state, a supporting spring is arranged in the damping sleeve in a sleeved mode, the upper end of the supporting spring abuts against the lower plane of the upper end cover, and the lower end of the supporting spring abuts against the lower plane of the upper end cover. The lower end of the supporting spring stretches into the damping liquid and abuts against the upper plane of the lower end cover. The damping device has the advantages that the damping performance of various needling machines is improved, the damping effect is good, the application range is wide, and the quality of needled products can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of shock absorbing devices for nonwoven equipment, and in particular relates to a spring viscous damping composite shock absorber for a needle loom. Background Art

[0002] The needle loom is one of the most commonly used production equipment in the nonwoven industry. The needle loom is mainly divided into low-speed, medium-speed and high-speed types according to the different needle punching frequencies. With the advancement of technology and the increase in production capacity requirements, the requirements for the needle punching frequencies of these three types of needle looms are getting higher and higher. There are some needle looms with a needle punching frequency of more than 2,000 times per minute, which are called ultra-high-speed needle looms in the industry. With the increase in the needle punching frequency, the vibration frequency and amplitude of the needle loom will also increase accordingly. The greater the vibration frequency and amplitude, not only will the workers feel obvious vibration, but it will also affect the quality of the needle punched products. At present, rubber pads, spring seats or air bags are often used to reduce the vibration of the needle loom. According to the requirements of the textile machinery industry standard FZ / T93047-2023 of the People's Republic of China, the maximum amplitude of the needle loom under no-load condition is grade A and grade B respectively. However, it is difficult for the ultra-high-speed needle loom to reach the grade A standard when using rubber pads, spring seats and air bags for vibration reduction. Therefore, the industry usually uses viscous dampers to reduce the vibration of ultra-high-speed needle looms. Viscous dampers have unexpectedly good vibration reduction effects on high-frequency and high-amplitude vibrations, but ultra-high-speed needle looms are not It has been running at an ultra-high speed, and different relatively low medium speed, low speed and high speed are often used according to needs. At this time, the shock absorption effect of the viscous damper will be greatly reduced and it is difficult to maintain the A-level standard. It can be said that for ultra-high-speed acupuncture machines, the viscous damper on it cannot stably exert the shock absorption effect during most of the operation time. At the same time, the damping fluid in the viscous damper needs to be checked regularly, which not only has high maintenance costs, but also once the damping fluid is lost or fails, the acupuncture machine will immediately lose its shock absorption ability, thereby damaging the products being processed.

[0003] In the prior art, for example, a "shock-absorbing device for acupuncture machine" provided in the Chinese invention patent application publication number CN102182779A adopts an airbag shock-absorbing structure, which has a similar effect to a spring, but can adjust the gas pressure in the airbag to adapt to acupuncture machines with different acupuncture frequencies. However, the shock-absorbing effect for ultra-high-speed acupuncture machines at high frequencies and high amplitudes is poor; another example is a "shock-absorbing device for acupuncture machine" disclosed in the Chinese invention patent application publication number CN111636153A, which adopts a rubber damping pad and a buffer spring. The adjusting disk is arranged on the load-bearing body through the adjusting disk boss, and the rubber damping pad and the buffer spring ring are arranged between the load-bearing body and the cushion block. In actual use, it is found that the load-bearing capacity of the adjusting disk boss is very low, and the adjusting disk boss is very easy to break after long-term vibration, and although the rubber damping pad and the buffer spring ring act between the load-bearing body and the cushion block at the same time and seem to have different effects, the shock absorbing performance of the rubber damping pad and the buffer spring ring is similar, and the shock absorbing effect of the ultra-high-speed needling machine at high frequency and high amplitude is still unsatisfactory.

[0004] In view of the above situation, it is necessary to design a viscous damping shock absorber for a needle loom with a simple structure and low cost, which can reduce shock by springs at low, medium and high speeds and by damping fluid at ultra-high speeds. To this end, the applicant has made a useful design, and the technical solution to be introduced below is produced under this background. Summary of the invention

[0005] The task of the present invention is to provide a spring viscous damping composite shock absorber for a needling machine, which helps to improve the shock absorbing structure so that the spring can overcome the defect of insufficient damping performance of the damping fluid for low-frequency and low-amplitude vibration under low-speed, medium-speed and high-speed conditions of the needling machine. At the same time, the damping fluid cooperates with the damping sleeve and the spring so that the needling machine can effectively reduce the high-frequency and high-amplitude vibration under ultra-high-speed conditions, which is beneficial to improving the shock absorbing performance of various needling machines and ensuring the quality of the needling products.

[0006] The task of the present invention is accomplished in this way: a spring viscous damping composite shock absorber for a needle machine comprises a lower end cover, an upper end cover arranged above the lower end cover and a group of support springs evenly distributed between the lower end cover and the upper end cover, wherein the lower end cover is upwardly formed with a circle of lower end cover retaining edges and a damping liquid cavity opening upward is formed in the lower end cover retaining edges, and the damping liquid cavity is filled with damping liquid; the upper end cover is downwardly formed with at least one damping sleeve opening downward at a position corresponding to the damping liquid cavity, and the lower end of the damping sleeve is immersed in the damping liquid in the use state, and a support spring is respectively sleeved in the damping sleeve, the upper end of the support spring abuts against the lower plane of the upper end cover, and the lower end of the support spring penetrates into the damping liquid and abuts against the upper plane of the lower end cover.

[0007] In a specific embodiment of the present invention, a plurality of lower support spring seats are spaced apart on the upper plane of the lower end cover and at positions corresponding to the bottom of the damping liquid chamber, and the lower end of the support spring is sleeved on the corresponding lower support spring seat and abuts against the upper plane of the lower end cover.

[0008] In another specific embodiment of the present invention, a plurality of upper support spring seats are arranged on the lower plane of the upper end cover and at positions corresponding to the damping liquid chambers, respectively, and are spaced downward. The upper ends of the support springs are sleeved on the corresponding upper support spring seats located in the damping sleeve and abut against the lower plane of the upper end cover.

[0009] In yet another specific embodiment of the present invention, there is one damping sleeve, which is located at the center of the damping liquid chamber.

[0010] In yet another specific embodiment of the present invention, the number of the damping sleeves is two or more, and the plurality of damping sleeves are evenly spaced around the central position of the damping liquid chamber.

[0011] In another specific embodiment of the present invention, a plurality of spring sleeves with downward openings are provided on the lower plane of the upper end cover and at positions corresponding to the damping fluid chambers. In a state of use, the lower ends of the spring sleeves are located above the upper plane of the damping fluid, and a support spring is also respectively provided in the spring sleeves. The upper ends of the support springs are sleeved on the corresponding upper support spring seats located in the spring sleeves and abut against the lower plane of the upper end cover, while the lower ends of the support springs extend into the damping fluid and are sleeved on the corresponding lower support spring seats and abut against the upper plane of the lower end cover.

[0012] In a further specific embodiment of the present invention, a circle of lower end cover fixing holes is provided at intervals around the lower end cover, and a circle of upper end cover fixing holes is provided at intervals around the upper end cover.

[0013] In a more specific embodiment of the present invention, the damping liquid is a viscous liquid, and the material of the viscous liquid is one of silicone oil and bromofluoride oil.

[0014] In yet another specific embodiment of the present invention, a circle of upper end cover ribs is formed on the lower plane of the upper end cover at a position corresponding to the lower end cover rib, and a protective cover is arranged between the lower end cover ribs and the upper end cover ribs, and the protective cover is used to close the gap between the upper end cover and the lower end cover.

[0015] In yet another specific embodiment of the present invention, the protective sleeve is a rubber ring, and the upper edge of the rubber ring is sealed and fixed on the lower end cover rib, while the lower edge is sealed and fixed on the upper end cover rib.

[0016] The present invention has the beneficial effect of adopting the above structure: due to the structure that the lower end cover and the upper end cover are supported by the spring and the damping sleeve and the spring form viscous damping in the damping fluid, the low-frequency and low-amplitude vibration of the acupuncture machine can be eliminated by the spring at low speed, medium speed and high speed, and the high-frequency and high-amplitude vibration of the acupuncture machine at ultra-high speed can be eliminated by the coordination of the damping fluid, the damping sleeve and the spring, which effectively improves the shock absorption performance of various acupuncture machines and ensures the quality of acupuncture products. At the same time, the shock absorption effect is good and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 for Figure 1 A front cross-sectional view of an embodiment; Figure 3 This is a usage status diagram of an application example of the present invention.

[0018] In the figure: 1. lower end cover, 11. lower end cover retaining edge, 111. damping liquid chamber, 12. lower end cover fixing hole, 13. lower supporting spring seat; 2. upper end cover, 21. damping sleeve, 22. spring sleeve, 23. upper supporting spring seat, 24. upper end cover fixing hole, 25. upper end cover retaining edge; 3. supporting spring; 4. damping liquid; 5. protective cover; 6. acupuncture machine. DETAILED DESCRIPTION

[0019] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0020] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 The positions shown are for reference only and thus cannot be understood as a special limitation on the technical solution provided by the present invention. Example 1

[0021] See also Figure 1 and Figure 2The present invention relates to a spring viscous damping composite shock absorber for acupuncture machine, comprising a lower end cover 1, an upper end cover 2 arranged above the lower end cover 1, and a group of support springs 3 evenly distributed between the lower end cover 1 and the upper end cover 2. In this embodiment, the number of the aforementioned support springs 3 is shown as six. The innovation of the present invention is that the aforementioned lower end cover 1 is formed with a circle of lower end cover retaining edge 11 upwardly and a damping liquid cavity 111 with an opening upwardly is formed in the lower end cover retaining edge 11, and the aforementioned damping liquid cavity 111 is filled with damping liquid 4; the aforementioned upper end cover 2 is formed with at least one damping sleeve 21 with an opening downwardly at a position corresponding to the damping liquid cavity 111, and the lower end of the damping sleeve 21 is immersed in the damping liquid 4 in the use state, and a support spring 3 is respectively sleeved in the aforementioned damping sleeve 21, and the upper end of the support spring 3 abuts on the lower plane of the upper end cover 2, and the lower end of the support spring 3 penetrates into the damping liquid 4 and abuts on the upper plane of the lower end cover 1.

[0022] A plurality of lower support spring seats 13 are arranged at intervals on the upper plane of the lower end cover 1 and at positions corresponding to the bottom of the damping liquid chamber 111. The lower ends of the support springs 3 are sleeved on the corresponding lower support spring seats 13 and abut against the upper plane of the lower end cover 1. In this embodiment, the number of the lower support spring seats 13 is the same as the number of the support springs 3, both of which are six.

[0023] On the lower plane of the upper end cover 2 and at positions corresponding to the damping liquid chamber 111, a plurality of upper support spring seats 23 are arranged spaced downward, and the upper ends of the support springs 3 are sleeved on the corresponding upper support spring seats 23 located in the damping sleeve 21 and abut against the lower plane of the upper end cover 2. In this embodiment, the number of the upper support spring seats 23 is the same as the number of the support springs 3, both of which are six.

[0024] The number of the damping sleeves 21 is two or more, and the plurality of damping sleeves 21 are evenly spaced around the center of the damping fluid chamber 111. In this embodiment, the number of the damping sleeves 21 is preferably two and they are symmetrically spaced around the center of the damping fluid chamber 111.

[0025] Furthermore, a plurality of spring sleeves 22 with downward openings are provided on the lower plane of the upper end cover 2 and at positions corresponding to the damping fluid chamber 111. In the present embodiment, the number of the spring sleeves 22 is four. When in use, the lower ends of the spring sleeves 22 are located above the upper plane of the damping fluid 4, and a support spring 3 is also respectively provided in the four spring sleeves 22. The upper ends of the support springs 3 are provided on the corresponding upper support spring seats 23 located in the spring sleeves 22 and abut against the lower plane of the upper end cover 2, while the lower ends of the support springs 3 extend into the damping fluid 4 and are provided on the corresponding lower support spring seats 13 and abut against the upper plane of the lower end cover 1.

[0026] A circle of lower end cover fixing holes 12 are formed at intervals around the lower end cover 1 , and a circle of upper end cover fixing holes 24 are formed at intervals around the upper end cover 2 .

[0027] The damping fluid 4 is a viscous liquid. The material of the viscous liquid is not subject to any restrictions. In the present embodiment, the damping fluid 4 is preferably silicone oil or bromofluoride oil.

[0028] A circle of upper end cover rib 25 is formed on the lower plane of the upper end cover 2 at a position corresponding to the lower end cover rib 11, and a protective sleeve 5 is arranged between the lower end cover rib 11 and the upper end cover rib 25, and the protective sleeve 5 is used to close the gap between the upper end cover 2 and the lower end cover 1. The protective sleeve 5 is a rubber ring, and the upper edge of the rubber ring is sealed and fixed on the lower end cover rib 11, and the lower edge is sealed and fixed on the upper end cover rib 25.

[0029] See also Figure 1 , Figure 2 Combined with Figure 3 , Figure 3 This is a schematic diagram of an application example of the shock absorber, wherein a shock absorber is respectively arranged at the four corners of the acupuncture machine 6, wherein the lower end cover 1 is fixed to the horizontal ground screw through the lower end cover fixing hole 12, and the upper end cover 2 is fixed to the bottom screw of the acupuncture machine 6 through the upper end cover fixing hole 24. When the acupuncture machine 6 is operated at a low speed, medium speed or high speed with a needling frequency lower than 2000 times per minute, the low-frequency vibration generated by the acupuncture machine 6 acts on the upper end cover 2, and the upper end cover 2 compresses the support spring 3, and the support spring 3 directly plays a shock absorbing effect. In this process, the damping sleeve 21 and the support spring 3 are simultaneously supported by the damping fluid 4 to play an auxiliary shock absorbing role. When the needling machine 6 operates at an ultra-high speed with a needling frequency higher than 2000 times per minute, the high-frequency vibration generated by the needling machine 6 acts on the upper end cover 2. At this time, the resilience of the support spring 3 is not enough to eliminate the amplitude generated by the high-frequency vibration. The damping sleeve 21 and the support spring 3 are required to overcome the resistance of the damping fluid 4 and play a major role in eliminating the high-frequency vibration during the rising and falling processes. Example 2

[0030] The structure of this embodiment is basically the same as that of the first embodiment (not shown in the figure), except that: the number of the aforementioned damping sleeve 21 is one, and the damping sleeve 21 is located at the central position of the damping liquid chamber 111. The purpose is to keep the aforementioned upper end cover 2 stable when subjected to vibration, and to prevent the aforementioned upper end cover 2 from failing to achieve the desired shock absorption effect due to uneven force during the shock absorption process.

[0031] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

[0032] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A spring viscous damping composite shock absorber for a needle loom, comprising a lower end cover (1), an upper end cover (2) arranged above the lower end cover (1), and a group of support springs (3) evenly distributed between the lower end cover (1) and the upper end cover (2), characterized in that: The lower end cover (1) is formed with a circle of lower end cover retaining edge (11) upwards and a damping liquid chamber (111) with an opening facing upwards is formed inside the lower end cover retaining edge (11), and the damping liquid chamber (111) is filled with damping liquid (4); the upper end cover (2) is formed with at least one damping sleeve (21) with an opening facing downwards at a position corresponding to the damping liquid chamber (111), and the lower end of the damping sleeve (21) is immersed in the damping liquid (4) in a state of use, and a support spring (3) is respectively sleeved in the damping sleeve (21), and the upper end of the support spring (3) abuts against the lower plane of the upper end cover (2), and the lower end of the support spring (3) penetrates into the damping liquid (4) and abuts against the upper plane of the lower end cover (1).

2. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: A plurality of lower support spring seats (13) are arranged at intervals on the upper plane of the lower end cover (1) and at positions corresponding to the bottom of the damping liquid chamber (111); the lower ends of the support springs (3) are sleeved on the corresponding lower support spring seats (13) and abut against the upper plane of the lower end cover (1).

3. The spring viscous damping composite shock absorber for acupuncture machine according to claim 2, characterized in that: On the lower plane of the upper end cover (2) and at positions corresponding to the damping liquid chamber (111), a plurality of upper support spring seats (23) are arranged at intervals downward, and the upper ends of the support springs (3) are sleeved on the corresponding upper support spring seats (23) located in the damping sleeve (21) and abut against the lower plane of the upper end cover (2).

4. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: The number of the damping sleeve (21) is one, and the damping sleeve (21) is located at the central position of the damping liquid chamber (111).

5. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: The number of the damping sleeves (21) is two or more, and the plurality of damping sleeves (21) are evenly spaced around the central position of the damping liquid chamber (111).

6. The spring viscous damping composite shock absorber for acupuncture machine according to claim 3, characterized in that: A plurality of spring sleeves (22) with downward openings are arranged on the lower plane of the upper end cover (2) and at positions corresponding to the damping fluid chamber (111). In a state of use, the lower ends of the spring sleeves (22) are located above the upper plane of the damping fluid (4), and a support spring (3) is also sleeved in each of the spring sleeves (22). The upper ends of the support springs (3) are sleeved on corresponding upper support spring seats (23) located in the spring sleeves (22) and abut against the lower plane of the upper end cover (2), while the lower ends of the support springs (3) extend into the damping fluid (4) and are sleeved on corresponding lower support spring seats (13) and abut against the upper plane of the lower end cover (1).

7. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: A circle of lower end cover fixing holes (12) are arranged at intervals around the lower end cover (1), and a circle of upper end cover fixing holes (24) are arranged at intervals around the upper end cover (2).

8. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: The damping liquid (4) is a viscous liquid, and the material of the viscous liquid is one of silicone oil and bromofluoride oil.

9. The spring viscous damping composite shock absorber for acupuncture machine according to claim 1, characterized in that: A circle of upper end cover ribs (25) is formed on the lower plane of the upper end cover (2) at a position corresponding to the lower end cover ribs (11), and a protective sleeve (5) is provided between the lower end cover ribs (11) and the upper end cover ribs (25), and the protective sleeve (5) is used to close the gap between the upper end cover (2) and the lower end cover (1).

10. The spring viscous damping composite shock absorber for acupuncture machine according to claim 9, characterized in that: The protective sleeve (5) is a rubber ring, and the upper edge of the rubber ring is sealed and fixed on the lower end cover rib (11), while the lower edge is sealed and fixed on the upper end cover rib (25).

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