Balanced noise reduction aluminum casting for belt pulley of sewing machine

Abstract

The utility model discloses a sewing machine belt pulley balance noise reduction aluminum casting which is formed by splicing a first shell and a second shell, sound absorption materials are arranged in a cavity jointly formed by the first shell and the second shell, and a plurality of through holes are evenly formed in the second shell. When the balance noise reduction aluminum casting is installed, the second shell is installed on the belt pulley through bolts, a first butt joint block is integrally arranged on the outer wall of the first shell, a second butt joint block is integrally arranged on the outer wall of the second shell, and the first butt joint block and the second butt joint block are fixed through bolts. Relates to the technical field of belt pulley balance noise reduction aluminum castings, by arranging the balance noise reduction aluminum casting formed by combining a first shell and a second shell, arranging a sound absorption material in a common cavity of the first shell and the second shell, when noise is generated between a belt pulley and a belt, the sound absorption material can absorb part of the noise, and therefore the noise can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum castings for balancing and reducing noise in belt pulleys, specifically a sewing machine belt pulley balancing and reducing noise in aluminum castings. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, weaving or sewing together one or more layers of fabric. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products made of leather, plastic, and paper. The stitches produced are neat, beautiful, flat, and strong. Sewing machines are fast and easy to use. However, sewing machines require a pulley assembly for transmission, and noise can easily be generated between the pulleys and the belt.

[0003] Currently, sewing machines have balancing castings installed on their pulleys to ensure the balance of the pulley rotation. However, these balancing castings do not have noise reduction capabilities, and friction between the pulley and the belt can easily generate noise. Therefore, it is necessary to improve the existing balancing castings installed on the sewing machine pulleys. Utility Model Content

[0004] In view of the problems existing in the existing aluminum casting for balancing and reducing noise of sewing machine pulleys, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a balancing and noise-reducing aluminum casting for sewing machine pulleys, which solves the problem that the balancing castings installed on the pulleys of current sewing machines are used to ensure the balance of the pulley rotation. However, the balancing castings do not have a noise reduction function, and the friction between the pulley and the belt easily generates noise. Therefore, it is necessary to improve the existing balancing castings installed on the sewing machine pulleys.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A sewing machine pulley balancing and noise reduction aluminum casting is composed of a first shell and a second shell. The cavity formed by the first shell and the second shell is filled with sound-absorbing material, and the second shell is evenly provided with multiple through holes.

[0008] When installing the balanced noise-reducing aluminum casting, bolts are used to mount the second housing onto the pulley.

[0009] As a preferred embodiment of the sewing machine pulley balancing and noise reduction aluminum casting of the present invention, wherein: a first mating block is integrally provided on the outer wall of the first housing, a second mating block is integrally provided on the outer wall of the second housing, and the first mating block and the second mating block are fixed together by bolts.

[0010] As a preferred embodiment of the sewing machine pulley balancing and noise reduction aluminum casting of the present invention, wherein: the first mating block is provided with a first internal thread hole, and the second mating block is provided with a second internal thread hole that matches the first internal thread hole.

[0011] In a preferred embodiment of the sewing machine pulley balancing and noise-reducing aluminum casting described in this utility model, the sound-absorbing material is set as sound-absorbing cotton.

[0012] As a preferred embodiment of the sewing machine pulley balancing and noise reduction aluminum casting of the present invention, wherein: the second housing is provided with a third internal thread hole, the pulley is provided with an internal thread groove, and the second housing is mounted on the pulley by bolts.

[0013] As a preferred embodiment of the sewing machine pulley balancing and noise reduction aluminum casting of the present invention, wherein: the second housing is provided with a third internal thread hole, the pulley is provided with a fourth internal thread hole, and the bolt connecting the second housing and the pulley passes through the second housing and the pulley.

[0014] Compared with existing technologies:

[0015] By setting up a balanced noise-reducing aluminum casting composed of a first housing and a second housing, and placing sound-absorbing material in the common cavity of the first housing and the second housing, the sound-absorbing material can absorb part of the noise when noise is generated between the pulley and the belt, thereby effectively reducing the noise. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure provided for Embodiment 1 of the present utility model;

[0017] Figure 2 Provided for Embodiment 1 of this utility model Figure 1 A sectional view;

[0018] Figure 3 Provided for Embodiment 1 of this utility model Figure 1 The right-side view;

[0019] Figure 4 A schematic diagram of the balanced noise-reducing aluminum casting provided in Embodiment 1 of this utility model after being installed on the pulley;

[0020] Figure 5 Provided for Embodiment 1 of this utility model Figure 4 A sectional view;

[0021] Figure 6 This is a schematic diagram of the balanced noise-reducing aluminum casting provided in Embodiment 2 of this utility model after being installed on the pulley.

[0022] In the figure: First housing 1, first docking block 11, second housing 2, second docking block 21, through hole 22, third internal threaded hole 23, sound-absorbing cotton 4, pulley 4. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Example 1:

[0025] This utility model provides a balancing and noise-reducing aluminum casting for sewing machine pulleys. Please refer to [link / reference]. Figure 1-5 It is composed of a first shell 1 and a second shell 2. The cavity formed by the first shell 1 and the second shell 2 is provided with sound-absorbing material, which can be sound-absorbing cotton. The second shell 2 is provided with a plurality of through holes 22 evenly.

[0026] When installing the balanced noise-reducing aluminum casting, the second housing 2 is mounted onto the pulley 4 using bolts.

[0027] The outer wall of the first housing 1 is integrally provided with a first docking block 11, and the outer wall of the second housing 2 is integrally provided with a second docking block 21. The first docking block 11 and the second docking block 21 are fixed together by bolts. Each first docking block 11 is equidistantly arranged around the outer wall of the first housing 1, and each second docking block 21 is equidistantly arranged around the outer wall of the second housing 2, so that the balanced noise-reducing aluminum casting composed of the first housing 1 and the second housing 2 can rotate stably.

[0028] The first mating block 11 has a first internal threaded hole, and the second mating block 21 has a second internal threaded hole that matches the first internal threaded hole. The first internal threaded hole and the second internal threaded hole are spatially identical and aligned.

[0029] The second housing 2 has a third internal threaded hole 23, and the pulley 4 has an internal threaded groove. The second housing 2 is mounted on the pulley 4 by bolts.

[0030] In practical use, the second housing 2 is fixed to the pulley 4 with bolts, the sound-absorbing cotton 3 is placed in the second housing 2, the first housing 1 and the second housing 2 are connected, the first mating block 11 and the second mating block 21 are aligned, and the first mating block 11 and the second mating block 21 are fixed together with bolts.

[0031] Some of the noise generated between the pulley 4 and the belt is absorbed by the sound-absorbing cotton 3 through the through hole 22, thereby reducing the noise.

[0032] Example 2:

[0033] See attached document Figure 6 Unlike Embodiment 1, the second housing 2 has a third internal threaded hole 23 and the pulley 4 has a fourth internal threaded hole. The bolts connecting the second housing 2 and the pulley 4 pass through the second housing 2 and the pulley 4. At this time, the connection between the second housing 2 and the pulley 4 is more secure.

[0034] In practical use, the second housing 2 is fixed to the pulley 4 with bolts, the sound-absorbing cotton 3 is placed in the second housing 2, the first housing 1 and the second housing 2 are connected, the first mating block 11 and the second mating block 21 are aligned, and the first mating block 11 and the second mating block 21 are fixed together with bolts.

[0035] Some of the noise generated between the pulley 4 and the belt is absorbed by the sound-absorbing cotton 3 through the through hole 22, thereby reducing the noise.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sewing machine pulley balance noise reduction aluminum casting, characterized by: The first shell (1) and the second shell (2) are spliced together, the first shell (1) and the second shell (2) together constitute a cavity, the cavity is provided with sound-absorbing material, and a plurality of through holes (22) are uniformly arranged on the second shell (2). When the balanced noise reduction aluminum casting is installed, the second shell (2) is installed on the belt pulley (4) by using a bolt.

2. The sewing machine pulley balance noise reduction aluminum casting of claim 1, wherein, The first shell (1) is integrally provided with a first butt block (11) on the outer wall, the second shell (2) is integrally provided with a second butt block (21) on the outer wall, and the first butt block (11) and the second butt block (21) are fixed by bolts.

3. The sewing machine pulley balance noise reduction aluminum casting of claim 2, wherein, The first butt block (11) is provided with a first internal thread hole, and the second butt block (21) is provided with a second internal thread hole matched with the first internal thread hole.

4. The sewing machine pulley balance noise reduction aluminum casting of claim 1, wherein, The sound-absorbing material is sound-absorbing cotton (3).

5. The sewing machine pulley balance noise reduction aluminum casting of claim 3 or 4, wherein, The second shell (2) is provided with a third internal thread hole (23), the belt pulley (4) is provided with an internal thread groove, and the second shell (2) is installed on the belt pulley (4) by a bolt.

6. The sewing machine pulley balance noise reduction aluminum casting of claim 3 or 4, wherein, The second shell (2) is provided with a third internal thread hole (23), the belt pulley (4) is provided with a fourth internal thread hole, and the bolt connecting the second shell (2) and the belt pulley (4) passes through the second shell (2) and the belt pulley (4).

Images