Rotary mounting structure of template sewing machine head

Abstract

The utility model provides a rotary installation structure of a template sewing machine head, and belongs to the technical field of sewing machines. The problem that an existing installation structure is complex in structure is solved. The sewing machine comprises a machine head arm and a belt wheel arranged in the front end of the machine head arm, a through hole right opposite to the belt wheel is formed in the bottom wall of the front end of the machine head arm, a machine head is vertically arranged below the through hole, and the rotary installation structure comprises a bearing arranged between the through hole and the machine head and an annular flange formed on the top of the machine head. The bearing comprises an inner ring and an outer ring, the outer ring abuts against the edge of the through hole, and the outer ring is directly and fixedly connected with the machine head arm through a circle of vertically-arranged first screws. An annular limiting base is formed on the inner wall of the belt wheel, and the limiting base and the annular flange are both fixedly connected with the inner ring. The rotary mounting structure of the template sewing machine head has the advantage of simple structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines, and relates to a template sewing machine head, in particular to a rotary mounting structure of a template sewing machine head. Background Art

[0002] A template sewing machine is a sewing device that combines garment template CAD software, garment template sewing CAD software, and advanced numerical control technology for fully automatic application template production. It mainly uses a computer-controlled machine with a higher degree of automation to replace the original manually operated sewing machine, thereby improving production efficiency and product quality and reducing the dependence on highly skilled personnel.

[0003] An existing template sewing machine, such as a 360° rotary independently driven automatic sewing equipment template sewing machine (application number: 201921231364.5) disclosed in the Chinese patent database, includes a machine frame and a head assembly. The head assembly includes a base and a connecting arm. The base is fixedly connected to the machine frame. One end of the connecting arm is fixedly connected to the base, and the other end is provided with an upper head. A lower head is provided on the machine frame corresponding to the upper head. The characteristics are as follows: the upper head is connected to the connecting arm through an upper rotating shaft, an upper rotating bearing group, and an upper connecting member. The upper rotating shaft is connected to an upper motor by belt drive, and the upper motor is fixedly arranged at the end of the connecting arm close to the upper head; the lower head is connected to the machine frame through a lower rotating shaft, a lower rotating bearing group, and a lower connecting member. The lower rotating shaft is connected to a lower motor by belt drive, and the lower motor is fixedly arranged on the machine frame.

[0004] In the above template sewing machine, the rotating bearing is fixedly connected to the connecting arm by a connecting member, which not only makes the structure complex, but also increases the assembly error and cost. Summary of the Utility Model

[0005] The purpose of the present utility model is to address the above problems existing in the prior art and propose a rotary mounting structure for a template sewing machine head with a simple structure.

[0006] The rotary mounting structure of the template sewing machine head, the sewing machine includes a head arm and a pulley arranged inside the front end of the head arm, and a through hole is formed on the bottom wall of the front end of the head arm opposite to the pulley. The head is vertically arranged below the through hole. The present rotary mounting structure includes a bearing arranged between the through hole and the head and an annular flange formed on the top of the head. The bearing includes an inner ring and an outer ring. The characteristics are that the outer ring is pressed against the edge of the through hole, and the outer ring is directly fixedly connected to the head arm by a circle of vertically arranged first screws; a ring-shaped limit seat is formed on the inner wall of the pulley. The limit seat and the pulley are coaxially arranged, and both the limit seat and the annular flange are fixedly connected to the inner ring.

[0007] The head arm, the pulley and the head are only connected together through bearings, so that the connecting parts for positioning the bearings in the prior art can be omitted. While simplifying the structure, it can also reduce the assembly error of parts, lower the cost and facilitate assembly.

[0008] In the rotating installation structure of the head of the above-mentioned template sewing machine, the inner ring is clamped between the limit seat and the annular flange, and the inner ring, the limit seat and the annular flange are fixed together by a circle of second screws arranged vertically. The inner ring, the limit seat and the annular flange are fixedly connected by a circle of second screws, which not only further simplifies the connection of the above three parts, but also makes the whole assembly more convenient.

[0009] In the rotating installation structure of the head of the above-mentioned template sewing machine, the annular flange has a circle of vertically arranged threaded holes, and the inner ring and the limit seat are respectively vertically penetrated with lower connection holes and upper connection holes. The upper connection holes, the lower connection holes and the threaded holes are the same in number and in one-to-one correspondence in position. Each upper connection hole is provided with the above-mentioned second screw. The rod part of the second screw passes through the corresponding lower connection hole and is screwed into the corresponding threaded hole, and the head of the second screw presses against the limit seat. With the above design, it has the advantages of simple structure and reliable connection.

[0010] In the rotating installation structure of the head of the above-mentioned template sewing machine, the bottom of the limit seat extends downward to form a guide ring matching the inner hole of the inner ring, and the guide ring is inserted into the inner hole of the inner ring. The setting of the guide ring forms a pre-connection between the pulley and the bearing, which is convenient for subsequent assembly.

[0011] In the rotating installation structure of the head of the above-mentioned template sewing machine, the bottom wall of the front end of the head arm extends downward to form a positioning cylinder. The inner hole of the positioning cylinder is the above-mentioned through hole, and the top surface of the outer ring abuts against the bottom surface of the positioning cylinder. The setting of the positioning cylinder can increase the thickness of the head arm at the through hole, making its connection with the bearing more stable.

[0012] In the rotating installation structure of the head of the above-mentioned template sewing machine, the diameter of the through hole is larger than that of the pulley, and the lower end of the pulley extends into the through hole to make the structure more compact.

[0013] Compared with the prior art, the rotating installation structure of the head of this template sewing machine has the following advantages:

[0014] 1. The head arm, the pulley and the head are only connected together through bearings, so that the connecting parts for positioning the bearings in the prior art can be omitted. While simplifying the structure, it can also reduce the assembly error of parts, lower the cost and facilitate assembly.

[0015] 2. The inner ring, the limit seat and the annular flange are fixedly connected by a circle of second screws, which not only further simplifies the connection of the above three parts, but also makes the whole assembly more convenient. Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of the rotary mounting structure of the template sewing machine head.

[0017] Figure 2 It is a sectional schematic diagram of the rotary mounting structure of the template sewing machine head.

[0018] Figure 3 It is Figure 2 an enlarged schematic diagram of part A in

[0019] Figure 4 It is an exploded schematic diagram of the rotary mounting structure of the template sewing machine head.

[0020] In the figure, 1 is the head arm; 1a is the positioning cylinder; 2 is the pulley; 2a is the limit seat; 2b is the guide ring; 3 is the bearing; 3a is the inner ring; 3b is the outer ring; 4 is the head; 4a is the annular flange; 5 is the first screw; 6 is the second screw. Specific embodiments

[0021] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0022] As Figure 1 and Figure 2 shown, in the rotary mounting structure of the template sewing machine head, the sewing machine includes a head arm 1 and a pulley 2 arranged inside the front end of the head arm 1, and a through hole is provided on the bottom wall of the front end of the head arm 1 opposite to the pulley 2; the head 4 is vertically arranged below the through hole.

[0023] As Figures 2 to 4 shown, the rotary mounting structure of the template sewing machine head of the present invention includes a bearing 3 arranged between the through hole and the head 4 and an annular flange 4a formed on the top of the head 4, and the bearing 3, the annular flange 4a, the through hole and the pulley 2 are coaxially arranged. Among them, the type of the bearing 3 is a ball bearing 3, and the bearing 3 includes an inner ring 3a and an outer ring 3b. The outer ring 3b is pressed against the edge of the through hole, and the outer ring 3b is directly fixed to the head arm 1 through a circle of vertically arranged first screws 5; an annular limit seat 2a is integrally formed on the inner wall of the pulley 2, the limit seat 2a and the pulley 2 are coaxially arranged, and both the limit seat 2a and the annular flange 4a are fixed to the inner ring 3a. Preferably, the head of the first screw 5 is arranged downward, which is convenient for assembly.

[0024] The head arm 1, the pulley 2 and the head 4 are only connected together through the bearing 3, so that the connecting parts for positioning the bearing 3 in the prior art can be omitted, while simplifying the structure, reducing the assembly error of parts, lowering the cost and facilitating assembly.

[0025] In this embodiment,

[0026] The bottom wall at the front end of the machine head arm 1 extends downward to form a positioning cylinder 1a. The inner hole of the positioning cylinder 1a is the above-mentioned through hole, and the top surface of the outer ring 3b abuts against the bottom surface of the positioning cylinder 1a. By setting the positioning cylinder 1a, the thickness of the machine head arm 1 at the through hole can be increased, making its connection with the bearing 3 more stable.

[0027] As Figure 2 and Figure 3 shown, the connection method of the inner ring 3a, the limit seat 2a and the annular flange 4a is as follows: the inner ring 3a is clamped between the limit seat 2a and the annular flange 4a. At this time, the two end faces of the inner ring 3a are respectively pressed tightly against the limit seat 2a and the annular flange 4a, and the inner ring 3a, the limit seat 2a and the annular flange 4a are fixed together by a circle of vertically arranged second screws 6. The inner ring 3a, the limit seat 2a and the annular flange 4a are fixedly connected by a circle of second screws 6, which not only further simplifies the connection of the above three components, but also makes the whole assembly more convenient. Specifically, the annular flange 4a has a circle of vertically arranged threaded holes. The inner ring 3a and the limit seat 2a are respectively vertically penetrated with lower connection holes and upper connection holes. The upper connection holes, the lower connection holes and the threaded holes are the same in number and are in one-to-one correspondence in position. Each upper connection hole is provided with the above-mentioned second screw 6. The rod part of the second screw 6 passes through the corresponding lower connection hole and is screwed into the corresponding threaded hole, and the head of the second screw 6 is pressed tightly against the limit seat 2a. Adopting the above design has the advantages of simple structure and reliable connection.

[0028] Furthermore, a guide ring 2b matching the inner hole of the inner ring 3a extends downward from the bottom of the limit seat 2a, and the guide ring 2b is inserted into the inner hole of the inner ring 3a. By setting the guide ring 2b, a pre-connection is formed between the pulley 2 and the bearing 3, which is convenient for subsequent assembly.

[0029] As Figure 2 and Figure 3 shown, in the actual product, the aperture of the through hole is larger than the pulley 2, and the lower end of the pulley 2 extends into the through hole to make the structure more compact.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rotary mounting structure for a template sewing machine head, the sewing machine comprising a head arm (1) and a pulley (2) arranged in the front end of the head arm (1), and a through hole (1a1) arranged opposite to the pulley (2) is provided on the bottom wall of the front end of the head arm (1), and a head (4) is vertically arranged below the through hole (1a1). The rotary mounting structure comprises a bearing (3) arranged between the through hole (1a1) and the head (4) and an annular flange (4a) formed on the top of the head (4), the bearing (3) comprising an inner ring (3a) and an outer ring (3b), characterized in that: The outer ring (3b) is pressed against the edge of the through hole (1a1), and the outer ring (3b) is directly fixedly connected to the machine head arm (1) via a circle of vertically arranged first screws (5); an annular limit seat (2a) is formed on the inner wall of the pulley (2), the limit seat (2a) and the pulley (2) are coaxially arranged, and the limit seat (2a) and the annular flange (4a) are both fixedly connected to the inner ring (3a).

2. The rotating installation structure of the template sewing machine head according to claim 1 is characterized in that: The inner ring (3a) is clamped between the limit seat (2a) and the annular flange (4a), and the inner ring (3a), the limit seat (2a) and the annular flange (4a) are fixed together by a circle of second screws (6) arranged vertically.

3. The rotating installation structure of the template sewing machine head according to claim 2 is characterized in that: The annular flange (4a) has a circle of vertically arranged threaded holes, and the inner ring (3a) and the limiting seat (2a) are respectively vertically penetrated by lower connecting holes and upper connecting holes, the upper connecting holes, the lower connecting holes and the threaded holes are the same in number and have corresponding positions, and each upper connecting hole is provided with the above-mentioned second screw (6), the rod of the second screw (6) passes through the corresponding lower connecting hole and is screwed into the corresponding threaded hole, and the head of the second screw (6) is tightly pressed on the limiting seat (2a).

4. The rotating installation structure of the template sewing machine head according to claim 2 or 3, characterized in that: The bottom of the limit seat (2a) extends downward to form a guide ring (2b) matching the inner hole of the inner ring (3a), and the guide ring (2b) is inserted into the inner hole of the inner ring (3a).

5. The rotating installation structure of the template sewing machine head according to claim 1, characterized in that: The bottom wall at the front end of the machine head arm (1) extends downward to form a positioning cylinder (1a), the inner hole of the positioning cylinder (1a) is the through hole (1a1), and the top surface of the outer ring (3b) is pressed against the bottom surface of the positioning cylinder (1a).

6. The rotating installation structure of the template sewing machine head according to claim 1, characterized in that: The diameter of the through hole (1a1) is larger than that of the pulley (2), and the lower end of the pulley (2) extends into the through hole (1a1).

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