Embroidery machine cam with eccentric clamping ring

Abstract

The utility model relates to an embroidery machine cam with an eccentric clamping ring, and aims to solve the technical problems of poor balance and stability, high noise, high production cost and inconvenience in installation and use due to the fact that similar products rarely adopt an integrated structural design of the eccentric clamping ring and a cam. The embroidery machine cam is characterized in that an integrally-formed eccentric clamping ring is arranged at one end of a cam shaft hole of the embroidery machine cam, screw holes used for installing and fixing the two sides of an opening through screws are formed in the two sides of the opening in one side of the eccentric clamping ring, a cover plate is sleeved with the shaft hole of the cam and a bearing hole of a large connecting rod bearing, and the cover plate is fixed to the cam through another three screws; an inner ring at a bearing hole of the large connecting rod bearing is limited on the cover plate; the large connecting rod bearing is locked and fixed to the outer diameter of the driving main shaft in the machine head through a shaft hole of the cam and a screw at the opening of the eccentric clamping ring, the opening of the eccentric clamping ring of the cam eccentrically faces a bearing hole of the large connecting rod bearing and is symmetrical to the crank on the other side, and the installation disc is arranged in an installation hole of the eccentric clamping ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cam of the embroidery machine head, and it is an embroidery machine cam with eccentric clamping ring. BACKGROUND

[0002] The embroidery machine is a kind of machinery for embroidering, when embroidering just begins to separate from hand embroidery, needle and thread go in and out ceaselessly, and move back and forth to realize embroidering.The head of computer embroidery machine is one of its main components, needle bar, driving shaft, connecting rod, big connecting rod, cam and other components are arranged in the head;Among them, the big connecting rod and the internal structure of the head, such as the authorized announcement number CN103883608B disclosed in Chinese patent document, authorized announcement date 2016.08.24, invention name "computer multi-head embroidery machine big connecting rod bearing";The big connecting rod of the connecting rod bearing in the embroidery machine big connecting rod bearing is integrated with bearing, i.e. the assembly hole end of the big connecting rod is the outer ring of the bearing, the inner diameter of the outer ring is sequentially provided with steel ball, retainer and inner ring, the two side ring grooves between the outer ring and the inner ring are provided with dust cover, and the inner diameter of the inner ring is assembly hole;The crank of the other end of the big connecting rod is provided with pin hole, the outer ring and the pin hole are connected through the crank, and the crank is integrated with the outer ring;Two groups of symmetrical steel balls and retainers are arranged in the outer ring of the connecting rod bearing. But the cam of the above product and similar products is generally inserted into the driving shaft, the outer diameter is clamped with the cam by eccentric clamping ring, and the structure design of the eccentric clamping ring and the cam is less integrated, the balance and stability are poor, the noise is large, the production cost is high, and the installation and use are inconvenient. SUMMARY

[0003] To overcome the above shortcomings, the utility model aims at providing an embroidery machine cam with eccentric clamping ring to the field, so as to solve the technical problems that the structure design of the eccentric clamping ring and the cam is less integrated in the existing similar products, leading to poor balance and stability, large noise, high production cost and inconvenient installation and use. The purpose is realized through the following technical scheme.

[0004] An embroidery machine cam with eccentric clamping ring is arranged in the driving main shaft in the head, the embroidery machine cam includes cam and big connecting rod bearing, the outer diameter of one end of the shaft hole of the cam is sleeved into the inner ring of the bearing hole of one end of the big connecting rod bearing;The structure design points are that the other end of the shaft hole of the cam is provided with integrally formed eccentric clamping ring, the two sides of the opening of the eccentric clamping ring are provided with screw holes for mounting and fixing the two sides of the opening through screws, and the big connecting rod bearing is locked and fixed on the outer diameter of the driving main shaft in the head through the shaft hole of the cam and the opening of the eccentric clamping ring screw. Thus, the embroidery machine cam connects the eccentric clamping ring and the cam together, reduces the centrifugal force when the cam operates, is more balanced and stable, and saves cost.

[0005] The eccentric clamping ring opening of the cam is eccentric towards the crank arranged symmetrically on the other side of the bearing hole of the connecting rod bearing.

[0006] The shaft hole sleeve of the cam is arranged in the bearing hole of the connecting rod bearing, and the cover plate is sleeved into the shaft hole of the cam and the bearing hole of the connecting rod bearing, the cover plate is fixed to the cam through three other screws, and the inner ring of the bearing hole of the connecting rod bearing is limited to the cover plate.

[0007] A reserved hole is arranged on one side of the shaft hole of the cam below the cover plate, and the reserved hole is convenient for connecting the eccentric bearing in the bearing hole of the connecting rod bearing.

[0008] The outer ring of the bearing hole of the connecting rod bearing is integrally formed with the connecting rod bearing, and the steel balls are equidistantly arranged between the outer ring and the inner ring.

[0009] The eccentric clamping ring opening of the cam is eccentric towards the crank arranged symmetrically on the other side of the bearing hole of the connecting rod bearing.

[0010] The utility model discloses a reasonable structure design, stability, balance is good, and work noise is little, and production cost is low, and assembly is convenient, and service life is long, especially when the cam runs, centrifugal force reduces, and it is suitable as the embroidery machine cam of the computer embroidery machine and the further improvement of similar products. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the side view structure schematic diagram of the use state of the utility model, and A-A section is made in the drawing.

[0012] Figure 2 It is the top view structure schematic diagram of the utility model. Figure 1

[0013] It is the cam and the integral molding structure schematic diagram of the eccentric clamping ring of the utility model. Figure 3 Figure 1 It is the top view structure schematic diagram of the utility model.

[0014] Figure 4 Figure 3 It is the bottom view structure schematic diagram of the utility model.

[0015] Figure 5 It is the bottom view structure schematic diagram of the utility model. Figure 3

[0016] It is the A-A section structure schematic diagram of the utility model. Figure 6 Figure 1 It is the A-A section structure schematic diagram of the utility model.

[0017] ​​​Attached figures and their names: 1. Eccentric clamping ring, 101. Screw hole, 102. Mounting hole, 2. Cam, 201. Reserved hole, 3. Connecting rod bearing, 301. Outer ring, 4. Cover plate, 5. Shaft hole. Detailed Implementation

[0018] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-6 As shown, the cam of the embroidery machine is set in the drive spindle inside the machine head. The cam includes a cam 2 and a connecting rod bearing 3. The outer diameter of one end of the shaft hole 5 of the cam is fitted into the inner ring of the bearing hole at one end of the connecting rod bearing. The other end of the shaft hole of the cam is provided with an integrally formed eccentric clamping ring 1. The opening on one side of the eccentric clamping ring is provided with screw holes 101 on both sides for mounting and fixing the opening. The connecting rod bearing is locked and fixed to the outer diameter of the drive spindle inside the machine head through the shaft hole of the cam and the screw at the opening of the eccentric clamping ring. The opening of the eccentric clamping ring of the cam is eccentrically oriented towards the crank on the other side symmetrically opposite to the bearing hole of the connecting rod bearing.

[0019] The aforementioned cam's shaft hole is fitted into the bearing hole of the connecting rod bearing, and simultaneously, the cover plate 4 is fitted into both the cam's shaft hole and the connecting rod bearing's bearing hole. The cover plate is fixed to the cam by three additional screws, and the inner ring of the connecting rod bearing's bearing hole is limited to the cover plate. A pre-drilled hole 201 is provided on one side of the cam's shaft hole below the cover plate; the outer ring 301 of the connecting rod bearing's bearing hole is integrally formed with the connecting rod bearing, and steel balls are equidistantly arranged between the outer and inner rings.

[0020] The eccentric clamping ring of the cam has a symmetrical opening and a mounting hole 102 on the outer side of the shaft hole. The mounting plate is fixedly installed in the mounting hole of the eccentric clamping ring.

[0021] During assembly, the cam and the eccentric clamping ring, which are integrated into one piece, are fitted into the inner ring of the connecting rod bearing at one end. They are then fixed together by a cover plate and screws. Next, the connecting rod bearing is locked and fixed to the outer diameter of the drive spindle inside the machine head by screws through the shaft hole of the cam and the opening of the eccentric clamping ring. The aforementioned shaft hole is set through the outer diameter of the drive spindle, and the opening of the eccentric clamping ring on one side is locked by screws. Finally, the mounting plate and other components are installed, and the other end of the connecting rod bearing is connected to the rotating block of the guide rod inside the machine body through a connecting rod or a three-eye connecting rod.

[0022] In summary, existing products of the same type have the cam inserted into the drive shaft, and the outer diameter is clamped by an eccentric clamping ring; this embroidery machine connects the eccentric clamping ring to the cam, which reduces the centrifugal force when the cam is running, making it more balanced and stable, and also saving costs.

Claims

1. An embroidery machine cam with eccentric clamping ring, which is arranged on a driving spindle in a machine head, comprising a cam (2) and a big connecting rod bearing (3), and the outer diameter of the shaft hole (5) of the cam is sleeved into the inner ring of the bearing hole of the big connecting rod bearing at one end; characterized in that The shaft hole (5) of the cam (2) is provided with an integral eccentric clamping ring (1) at the other end, the two sides of the opening of the eccentric clamping ring are provided with screw holes (101) for mounting and fixing the two sides of the opening through screws, and the big-end connecting rod bearing (3) is fixed and locked in the outer diameter of the driving main shaft in the head through the shaft hole of the cam and the opening of the eccentric clamping ring.

2. The cam for embroidery machines with eccentric clamping ring according to claim 1, characterized in that The opening eccentric of the eccentric clamping ring (1) of the cam (2) is arranged towards the crank of the bearing hole of the big-end connecting rod bearing (3) on the other side.

3. The cam for embroidery machines with eccentric gripper, according to claim 1, characterized in that The shaft hole (5) of the cam (2) is sleeved into the bearing hole of the big-end connecting rod bearing (3) and at the same time, the cover plate (4) is sleeved into the shaft hole of the cam and the bearing hole of the big-end connecting rod bearing, and the cover plate is fixed to the cam through three other screws, and the inner ring of the bearing hole of the big-end connecting rod bearing is limited to the cover plate.

4. The cam for embroidery machines with eccentric gripper, according to claim 3, characterized in that The side plane of the shaft hole (5) of the cam (2) below the cover plate (4) is provided with a reserved hole (201).

5. The cam for embroidery machines with eccentric gripper, according to claim 3, characterized in that The outer ring (301) of the bearing hole of the big-end connecting rod bearing (3) is integrally formed with the big-end connecting rod bearing, and steel balls are equidistantly arranged between the outer ring and the inner ring.

6. The cam for embroidery machines with eccentric gripper, according to claim 1, characterized in that The outer side plane of the shaft hole of the other side of the opening of the eccentric clamping ring (1) of the cam (2) is provided with a mounting hole (102), and a mounting disc is fixedly arranged in the mounting hole of the eccentric clamping ring.

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