Novel bedplate rack of sewing machine

Abstract

The utility model discloses a novel bedplate rack of a sewing machine, which comprises a bedplate and a rack main body, the rack main body comprises a plurality of upright post bodies and cross beam bodies, the upright post bodies and the cross beam bodies are of section bar structures, the upright post bodies and the cross beam bodies are connected in a staggered manner, inclined support bodies are connected between the upright post bodies and the cross beam bodies, and the inclined support bodies are connected with the bedplate main body. The inclined strut body is of a pipe structure. The stability of the whole supporting is guaranteed, meanwhile, a sectional material structure is adopted, the structural strength is guaranteed, the bending resistance and the torsion resistance are improved, machining is convenient, the production process is simpler, the stability of the connecting positions of the stand column bodies and the cross beam bodies is improved, the connecting strength is improved, and meanwhile the bending resistance and the torsion resistance are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing devices, in particular to a new type of table frame for a sewing machine. Background Art

[0002] The table is the working platform and carrier of the sewing machine. It is closely related to the user's operating experience and directly reflects the NVH performance of the sewing machine. A good table structure design can effectively attenuate or reduce the vibration and noise of the sewing machine, making the user more comfortable during operation.

[0003] For example, the publication number "CN205934372U" discloses "a mounting table structure for a wrist bending machine", including a bracket and a panel arranged on the bracket, characterized in that the panel is horizontally fixed on the bracket, a concave arc-shaped notch is opened on one side of the panel, and the connection points between the bracket and the panel are distributed on both sides of the arc-shaped notch. However, in actual applications, since the frame will be subjected to forces from various directions generated by the equipment and the user during use, the bending and torsion resistance of the table frame composed of a single structure is insufficient, and it is easy to bend and tilt during use. Summary of the invention

[0004] In view of the problem that the existing technology mentioned in the background technology has insufficient bending and torsional resistance of the table frame, the utility model provides a new table frame for a sewing machine, which can optimize the structure of the table frame, improve the stiffness and modal performance of the table frame, achieve improved NVH performance of the sewing machine, and make the frame have good bending resistance.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions.

[0006] A new type of table frame for a sewing machine includes a table and a frame body, the frame body includes a plurality of columns and beams, the columns and beams are both profile structures, the columns and beams are staggered, and each of the columns and beams is connected with a diagonal brace, which is a pipe structure. The frame body is mainly composed of columns and cross bodies, which ensures the stability of the overall support, and adopts a profile structure to ensure structural strength, improve bending and torsion resistance, and is easy to process, and the production process is simpler. In the present application, a diagonal brace is set between each column and beam, which can improve the stability of each column and beam at the connection, improve the connection strength, and further improve the bending and torsion resistance.

[0007] Preferably, the frame body includes side support assemblies arranged on both sides, and a transverse connection assembly is connected between the side support assemblies. The side support assemblies can effectively support the tabletop, and a transverse connection assembly is arranged between the side support assemblies on both sides to enhance the tightness of the connection of the entire frame as a whole, improve the connection strength, and at the same time enable the side support assemblies on both sides to ensure mutual limitation and reduce the amplitude of left and right shaking.

[0008] Preferably, the side support assembly includes a frame upper section cross support, the frame upper section cross support is connected to the table, the frame upper section cross support is connected to a support column on the side away from the table, and the support column is connected to a frame base on the side away from the frame upper section cross support. To improve the support stability of the table, the support columns are arranged vertically from top to bottom, which can ensure the overall height of the table frame, and each diagonal support body is connected to the support column to ensure the integrity of the entire table frame, and the connection reliability is enhanced by the diagonal support body. The frame base connected to the support column can provide effective base support.

[0009] Preferably, the upper cross bracket of the frame and the frame base are both connected with diagonal braces, and each diagonal brace is connected to a supporting column. The upper cross bracket of the frame and the frame base are both connected with diagonal braces, and each diagonal brace is connected to a supporting column, so as to improve the bending resistance and prevent the supporting column from bending with the frame base during the forward and backward shaking process.

[0010] Preferably, the side support assembly is composed of a plurality of column bodies and cross beam bodies of profile structure, and each column body has the same cross section as the cross beam body. Setting the cross sections of each column body and cross beam body on the side support assembly to be the same can facilitate processing and production, and can also facilitate management.

[0011] Preferably, the transverse connection assembly includes a frame cross arm connected to the middle of the side support assembly, and a frame pedal cross piece is connected to the bottom of the side support assembly. The frame cross arm is arranged in the middle of the side support assembly, which can ensure the support reliability and uniformity of the frame cross arm, and the frame pedal cross piece arranged at the bottom of the side support assembly increases the connection reliability of the frame bases on both sides.

[0012] Preferably, a diagonal brace is connected to the upper side of the frame cross arm, and one end of the diagonal brace away from the frame cross arm is connected to the side support assembly. The diagonal brace is arranged on the upper side of the frame cross arm, which improves the connection reliability between the frame cross arm and the side support assembly and can improve the resistance to vibration.

[0013] Preferably, the side support assembly is in an "I"-shaped structure. Arranging the side support assembly in an "I"-shaped structure makes the structure firmer and stronger, has higher strength, and on this basis can also save the amount of material used and has good stability.

[0014] Preferably, the frame body includes a plurality of adjustment seats arranged at the bottom. By arranging the adjustment seats at the bottom of the frame body, the adaptability of the frame body to different placement surfaces can be improved, friction can be reduced, the adaptability is higher, and the vibration transmission to the ground can be slowed down, thereby reducing noise.

[0015] Preferably, the diagonal brace body comprises a diagonal brace body and a flat connecting end located at the end of the diagonal brace body, and a connecting position is arranged on the flat connecting end. The flat connecting end has a larger contact area than the diagonal brace body, and can obtain a more stable connection relationship. At the same time, since the thickness of the flat connecting end is relatively thin, the quickness of connection can be improved.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) It has better bending resistance and improved static stiffness in the Z direction;

[0018] (2) The overall weight is lighter;

[0019] (3) It is mainly composed of profiles and pipes, with simpler production process and lower manufacturing cost;

[0020] (4) Multiple components use profiles with the same cross-section, making material management more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the first axonometric drawing of the utility model.

[0022] Figure 2 It is a side view of the utility model.

[0023] Figure 3 It is the second axonometric drawing of the present utility model.

[0024] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0025] Figure 5 It is an axonometric view of a table frame in the prior art.

[0026] In the figure:

[0027] 1 platen;

[0028] 2 rack body, 21 side support assembly, 211 rack upper cross support, 212 support column, 213 rack base, 22 transverse connection assembly, 221 rack cross arm;

[0029] 3 columns;

[0030] 4 cross beam body;

[0031] 5 diagonal brace body, 51 diagonal brace main body, 52 flat connecting end, 53 connecting position;

[0032] 6. Adjustable seat;

[0033] 7 rack pedal crosspieces. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Embodiment 1:

[0036] In the prior art, the table is the working platform and carrier of the sewing machine, which is closely related to the user's operating experience and directly reflects the NVH performance of the sewing machine. A good table structure design can effectively attenuate or reduce the vibration and noise of the sewing machine, making the user more comfortable during operation.

[0037] The existing table frame is composed of a frame and a table, and the structure is as follows Figure 5 As shown. The various components of the frame are formed by stamping and bending of plates, which has a complex process and high production cost. At the same time, since the components of the frame are open sections, their bending and torsion resistance is weaker than that of closed sections with the same cross-sectional area. Therefore, there is room for improvement in the bending and torsion resistance of the frame.

[0038] This embodiment optimizes the structure of the table bracket to improve the table stiffness and modal performance, thereby improving the NVH performance of the sewing machine.

[0039] like Figure 1 , 2 As shown in Figure 3, the frame body 2 includes a table 1 and a frame body 2. The frame body 2 includes a plurality of columns 3 and beams 4. The columns 3 and beams 4 are all profile structures. The columns 3 and beams 4 are staggered and connected. A diagonal brace 5 is connected between each column 3 and beam 4. The diagonal brace 5 is a pipe structure. The frame body 2 includes side support assemblies 21 arranged on both sides. A transverse connection assembly 22 is connected between the side support assemblies 21. The side support assembly 21 is composed of a plurality of columns 3 and beams 4 of profile structures. The cross sections of each column 3 and beam 4 are the same.

[0040] The frame body 2 is mainly composed of a column body 3 and a transverse body. The column body 3 and the cross beam body 4 are connected in a criss-cross manner to ensure the stability of the overall support. At the same time, the column body 3 and the cross beam body 4 adopt a profile structure, which can ensure structural strength, improve bending and torsion resistance, and facilitate processing. Compared with stamping and bending forming, the production process is simpler. In the present application, a diagonal brace body 5 is arranged between each column body 3 and the cross beam body 4, which can improve the stability of each column body 3 and the cross beam body 4 at the connection, improve the connection strength, and further improve the bending and torsion resistance.

[0041] The frame body 2 includes side support assemblies 21 arranged on both sides, wherein the side support assemblies 21 can effectively support the table 1, and the side support assemblies 21 are arranged on both sides, and a transverse connection assembly 22 is arranged between the side support assemblies 21 on both sides to enhance the overall connection tightness of the entire frame and improve the connection strength. At the same time, the side support assemblies 21 on both sides can ensure mutual limitation and reduce the left and right shaking amplitude, thereby improving the NVH performance of the table 1 frame.

[0042] Setting the cross sections of the pillar bodies 3 and the cross beam bodies 4 on the side support assembly 21 to be the same can facilitate processing and production, as well as management.

[0043] like Figure 3 As shown, the side support assembly 21 includes a frame upper section cross support 211, the frame upper section cross support 211 is connected to the table 1, the frame upper section cross support 211 is connected to a support column 212 on the side away from the table 1, and the support column 212 is connected to a frame base 213 on the side away from the frame upper section cross support 211. The frame upper section cross support 211 and the frame base 213 are both connected to diagonal bracing bodies 5, and each diagonal bracing body 5 is connected to the support column 212.

[0044] The support area of ​​the table 1 is ensured by the cross support 211 on the frame section to improve the support stability of the table 1. The support columns 212 are vertically arranged from top to bottom to ensure the overall height of the table 1 frame. The support columns 212 serve as the main connecting components of the diagonal braces 5. Each diagonal brace 5 is connected to the support columns 212, and each cross beam 4 is connected from top to bottom to ensure the integrity of the entire table 1 frame. The connection reliability is enhanced by the diagonal braces 5. The frame base 213 connected to the support columns 212 can provide effective base support.

[0045] The diagonal brace 5 is connected to the upper cross support 211 of the frame and the frame base 213, and each diagonal brace 5 is connected to the support column 212. The diagonal brace 5 arranged between the support column 212 and the upper cross support 211 of the frame can prevent the table plate 1 from bending relative to the support column 212 during the downward pressing process, thereby improving the bending resistance. The diagonal brace 5 is arranged between the support column 212 and the frame base 213 to prevent the support column 212 from bending relative to the frame base 213 during the forward and backward shaking process.

[0046] like Figure 3 As shown, the transverse connection assembly 22 includes a frame cross arm 221 connected to the middle of the side support assembly 21, and the bottom of the side support assembly 21 is connected to the frame pedal cross piece 7. The upper side of the frame cross arm 221 is connected to the diagonal support body 5, and the end of the diagonal support body 5 away from the frame cross arm 221 is connected to the side support assembly 21.

[0047] The frame cross arm 221 is arranged in the middle position of the side support assembly 21, which can ensure the support reliability and uniformity of the frame cross arm 221 and increase the influence range of the tight connection. The frame pedal cross piece 7 arranged at the bottom of the side support assembly 21 can correspond to the pedal setting and increase the connection reliability of the frame base 213 on both sides.

[0048] The diagonal brace 5 is arranged on the upper side of the frame cross arm 221, and the diagonal brace 5 connects the frame cross arm 221 and the side support assembly 21, which improves the connection reliability between the frame cross arm 221 and the side support assembly 21. During use, the source of vibration is mainly the table plate 1. The diagonal brace 5 is arranged on the side of the frame cross arm 221 closer to the table plate 1, which can improve the resistance to vibration.

[0049] like Figure 2 As shown, the side support assembly 21 is in an "I" shape. The side support assembly 21 is arranged in an "I" shape, so that the structure is relatively firm and strong, has high strength, and on this basis can also save the amount of material used, and has good stability.

[0050] like Figure 1 As shown, the rack body 2 includes four adjustment seats 6 arranged at the bottom. By arranging the adjustment seats 6 at the bottom of the rack body 2, the adaptability of the rack body 2 to different placement surfaces can be improved, while reducing friction, making the adaptability higher, and being able to slow down the transmission of vibration to the ground and reduce noise.

[0051] like Figure 4 As shown, the diagonal brace body 5 includes a diagonal brace body 51 and a flat connecting end 52 located at the end of the diagonal brace body 51, and a connecting position 53 is arranged on the flat connecting end 52. The two ends of the diagonal brace body 5 are arranged in a flat structure to form the flat connecting end 52. The flat connecting end 52 has a larger contact area than the diagonal brace body 51, and a more stable connection relationship can be obtained. At the same time, it is convenient to process the connecting position 53 on the flat connecting end 52. At the same time, since the thickness of the flat connecting end 52 is relatively thin, the quickness of the connection can be improved, and the length of the connecting piece at this point can be reduced.

[0052] The specific assembly of the new sewing machine table frame in this embodiment is as follows: In this embodiment, the table frame 1 mainly includes a table 1 and a frame body 2, wherein the frame body 2 is mainly composed of a column body 3 and a crossbeam body 4. In this embodiment, the column body 3 and the crossbeam body 4 are both profile structures, the table 1 is a wooden structure, and a hollow area for installing a sewing machine is provided on the table 1. The frame body 2 includes side support assemblies 21 arranged on both sides, wherein the side support assemblies 21 in this embodiment are in an "I"-shaped structure as a whole, and the side support assemblies 21 are located The upper frame cross support 211 is a cross beam 4, and the upper frame cross support 211 is connected and fixed to the table 1. A support column 212 is arranged below the upper frame cross support 211. The support column 212 is arranged vertically, and the support column 212 is connected to the frame base 213 on the side away from the upper frame cross support 211. In this embodiment, the support column 212 is welded to the upper frame cross support 211 and the frame base 213, and the upper frame cross support 211 and the support column 212 and the frame base 213 are connected. 13 all adopt profile structure, and the cross section of the profile structure is the same, so that the material management is more convenient, wherein an oblique support body 5 is arranged between the upper cross support 211 of the frame and the supporting column 212, and the oblique support body 5 adopts a pipe structure, and the oblique support body 5 is arranged on the side close to the user, and the two ends of the oblique support body 5 are arranged straight, which is convenient for connecting with the upper cross support 211 of the frame and the supporting column 212, and the oblique support body 5 is connected with the upper cross support 211 of the frame and the supporting column 212 by welding, and an oblique support body 5 is also arranged between the frame base 213 and the supporting column 212, In order to ensure good support and stability, the frame base 213 is set to a size larger than the frame upper section cross support 211. Therefore, the size of the diagonal brace body 5 connected between the frame base 213 and the frame upper section cross support 211 is larger than the size of the diagonal brace body 5 between the frame upper section cross support 211 and the supporting column 212. The diagonal brace body 5 set between the frame base 213 and the supporting column 212 is also set close to the user side, and the diagonal brace body 5 set between the frame base 213 and the supporting column 212 is connected by welding.

[0053] A rack base 213 is provided on the side support assemblies 21 on both sides, wherein an adjustment seat 6 is provided at the bottom of the rack base 213. There are four adjustment seats 6 in total, which can be adjusted in height by rotation to adapt to different placement positions of the user during use, reduce the shaking of the table 1 frame due to the vibration of the sewing machine, and ensure the stability of the frame body.

[0054] A transverse connection assembly 22 is provided between the side support assemblies 21 on both sides, and the transverse connection assembly 22 connects the side support assemblies 21 on both sides. In this embodiment, the transverse connection assembly 22 includes a frame cross arm 221, wherein the frame cross arm 221 is provided at the vertical middle position of the side support assembly 21, and is connected to the support column 212. The frame cross arm 221 and the support column 212 are connected in a bolted manner, wherein the frame cross arm 221 is a pipe structure to ensure the stability of the connection. In this embodiment, a frame pedal cross piece 7 is provided at the bottom of the side support assembly 21.

[0055] A diagonal brace body 5 is arranged between the frame cross arm 221 and the supporting column 212, and a diagonal brace body 5 is arranged at both ends of the frame cross arm 221, wherein the diagonal brace body 5 is arranged on the upper side of the frame cross arm 221, and flat connecting ends 52 are arranged at both ends of the diagonal brace body 5, the cross section of the flat connecting end 52 is flatter than the cross section of the diagonal brace body 51, and two screw holes are arranged on the flat connecting end 52 as connecting positions 53, and the connection method between the diagonal brace body 5 and the frame cross arm 221 and the supporting column 212 is bolt connection.

[0056] The finite element analysis model is conducted by setting the frame of the table 1 in the prior art to have the same size and material as the frame of the table 1 in this embodiment, and comparing the mass and stiffness performance of the table 1, wherein:

[0057] In this embodiment, the upper cross support 211 of the frame is made of profile material with a cross section of 58*30mm and a material thickness of 1.2mm;

[0058] In this embodiment, the support column 212 is made of profile material with a cross section of 58*30mm and a material thickness of 1.2mm;

[0059] In this embodiment, the frame base 213 has a closed cross section and a material thickness of 2.0 mm;

[0060] In this embodiment, the frame cross bar is made of profile, with a cross section of 58*30mm and a material thickness of 1.2mm;

[0061] In this embodiment, the support column 212 and the frame base 213 are added with diagonal braces, with a diameter of 24 mm and a material thickness of 1.5 mm;

[0062] In this embodiment, the support column 212 and the upper cross support are added with diagonal braces, with a diameter of 24 mm and a material thickness of 1.5 mm;

[0063] In this embodiment, the relative installation position of the table 1 and the frame body 2 is moved forward by 40 mm;

[0064] In this embodiment, the support column 212 and the frame cross bar are added with diagonal braces, with a diameter of 24 mm and a material thickness of 1.5 mm.

[0065] The analysis results are as follows:

[0066]

[0067] It can be seen from the above data that this embodiment can have better bending resistance and improve Z-direction static stiffness on the basis of reducing the overall weight. In actual applications, profiles and pipes can be made of different materials, including but not limited to steel, aluminum alloy, high-strength plastic, etc.; profiles and pipes can use different cross-sectional sizes; the relative positions of the upper cross support of the frame, the support columns, and the frame cross bars can be changed as needed; the diagonal brace body is composed of pipes, and different support angles can be adopted, and different methods of overlap with the support columns, frame cross bars, the upper cross support of the frame, and the frame base can be adopted.

Claims

1. A new type of sewing machine table frame, characterized in that: The invention comprises a table plate (1) and a frame body (2); the frame body (2) comprises a plurality of columns (3) and a cross beam (4); the columns (3) and the cross beam (4) are both profile structures; the columns (3) and the cross beam (4) are staggeredly connected; a diagonal brace (5) is connected between each of the columns (3) and the cross beam (4); and the diagonal brace (5) is a pipe structure.

2. According to the novel sewing machine table frame as described in claim 1, it is characterized in that: The frame body (2) comprises side support components (21) arranged on both sides, and a transverse connection component (22) is connected between the side support components (21).

3. According to the novel sewing machine table frame as described in claim 2, it is characterized in that: The side support assembly (21) comprises a frame upper section cross support (211), the frame upper section cross support (211) is connected to the table plate (1), the frame upper section cross support (211) is connected to a support column (212) on a side away from the table plate (1), and the support column (212) is connected to a frame base (213) on a side away from the frame upper section cross support (211).

4. According to the novel sewing machine table frame as described in claim 3, it is characterized in that: The upper cross support (211) of the frame and the frame base (213) are both connected with diagonal bracing bodies (5), and each of the diagonal bracing bodies (5) is connected to a supporting column (212).

5. A new sewing machine table frame according to claim 3 or 4, characterized in that: The side support assembly (21) is composed of a plurality of column bodies (3) and cross beam bodies (4) of profile structure, and each column body (3) has the same cross section as the cross beam body (4).

6. According to the novel sewing machine table frame as described in claim 2, it is characterized in that: The transverse connection assembly (22) comprises a frame cross arm (221) connected to the middle of the side support assembly (21), and the bottom of the side support assembly (21) is connected to a frame pedal cross piece (7).

7. A new sewing machine table frame according to claim 6, characterized in that: The upper side of the frame cross arm (221) is connected to a diagonal brace body (5), and one end of the diagonal brace body (5) away from the frame cross arm (221) is connected to a side support assembly (21).

8. A novel sewing machine table frame according to claim 2, 3, 4, 6 or 7, characterized in that: The side support assembly (21) is in an I-shaped structure.

9. A novel sewing machine table frame according to claim 1, 2, 3, 4, 6 or 7, characterized in that: The frame body (2) comprises a plurality of adjustment seats (6) arranged at the bottom.

10. A novel table frame for a sewing machine according to claim 1, 2, 3, 4, 6 or 7, characterized in that: The diagonal support body (5) comprises a diagonal support body (51) and a flat connecting end (52) located at the end of the diagonal support body (51), and a connecting position (53) is arranged on the flat connecting end (52).

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