Oil injection mechanism of transmission assembly, differential matching device of presser foot and embroidery machine

Abstract

The utility model discloses an oil injection mechanism of a transmission assembly. The oil injection mechanism comprises a fulcrum shaft, a shaft sleeve sleeved on the fulcrum shaft, a transmission piece sleeved on the shaft sleeve, a roller arranged on the transmission piece and an oil absorption piece, the fulcrum shaft is provided with an oil injection channel extending in the axial direction, and the fulcrum shaft is provided with a first oil injection hole penetrating through the outer wall and the inner wall of the fulcrum shaft. The shaft sleeve is provided with a second oil injection hole penetrating through the outer wall and the inner wall of the shaft sleeve. The oil absorption part is provided with an oil absorption part and a lubricating part, the oil absorption part is used for absorbing lubricating oil sequentially passing through the oil injection channel, the first oil injection hole and the second oil injection hole, and the lubricating part is used for smearing the lubricating oil on the outer rolling surface of the roller. The utility model further discloses a differential matching device of the presser foot and an embroidery machine. The roller bearing has the beneficial effects that a better lubricating effect is provided for the roller, the abrasion is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of oil injection mechanism of transmission assembly, the differential speed cooperation device of presser foot and embroidery machine, belong to the technical field of embroidery machine. BACKGROUND

[0002] The prior application of applicant CN202323501742.6 discloses a differential speed cooperation device of presser foot and embroidery machine, comprising a main shaft, a first cam and a second cam arranged on the main shaft, a needle bar, a presser foot slidably sleeved on the needle bar, a first transmission member having a first rotation fulcrum, and a second transmission member having a second rotation fulcrum. The first transmission member and the second transmission member are directly or indirectly movably connected. The first transmission member has a first roller and a second roller. The first roller and the outer cam surface of the first cam are in rolling contact, so that the second transmission member cooperates with the upward stroke of the presser foot. The second roller and the outer cam surface of the second cam are in rolling contact, so that the second transmission member cooperates with the downward stroke of the presser foot.

[0003] Since the first roller and the second roller are in rolling contact with the outer cam surfaces of the first cam and the second cam respectively, the wear of the first roller and the second roller is relatively large, which may affect the service life. SUMMARY

[0004] The utility model solves the technical problem of providing an oil injection mechanism of transmission assembly, a differential speed cooperation device of presser foot, and an embroidery machine, which provides better lubrication for the rollers, reduces wear, and prolongs the service life.

[0005] The utility model is implemented through the following technical solutions.

[0006] An oil injection mechanism of transmission assembly includes a fulcrum shaft, a shaft sleeve sleeved on the fulcrum shaft, a transmission member sleeved on the shaft sleeve, a roller arranged on the transmission member, and an oil suction member. The fulcrum shaft has an oil injection channel extending in the axial direction. The fulcrum shaft has a first oil injection hole penetrating the outer wall and the inner wall thereof. The shaft sleeve has a second oil injection hole penetrating the outer wall and the inner wall thereof. The outer rolling surface of the roller is in contact with the oil suction member, which is used to absorb lubricating oil passing through the oil injection channel, the first oil injection hole, and the second oil injection hole in sequence, and to apply lubricating oil to the outer rolling surface of the roller when the roller rolls.

[0007] As a further improvement of the utility model, the inner wall of the shaft sleeve has a first oil injection groove extending in the circumferential direction, and the inner port of the second oil injection hole is located on the first oil injection groove.

[0008] As a further improvement of the utility model, the outer wall of the shaft sleeve has a second oil injection groove extending in the circumferential direction, and the outer port of the second oil injection hole is located on the second oil injection groove.

[0009] As a further improvement of the utility model, the outer wall of the fulcrum shaft has an oil guide groove extending in a spiral line.

[0010] As a further improvement of the utility model, the covering length of the oil guide groove along the axial direction of the fulcrum shaft is less than the length of the shaft sleeve, and the oil guide groove is located within the length range of the shaft sleeve.

[0011] As a further improvement of the utility model, the transmission member has a sleeve joint portion sleeved on the outer wall of the fulcrum shaft, a connecting sleeve joint portion and a mounting portion for arranging the roller; the sleeve joint portion has a sleeve joint hole, the sleeve joint hole has a mounting hole penetrating through the outer wall and the inner wall thereof, and the oil suction member is inserted into the mounting hole.

[0012] As a further improvement of the utility model, the oil suction member is arranged as a felt member.

[0013] A differential cooperation device of a presser foot, comprising an oil injection mechanism of the transmission assembly, a main shaft, a first cam and a second cam arranged on the main shaft, a third transmission member and an elastic member; the power transmission assembly is provided with two transmission members, namely a first transmission member and a second transmission member, and a roller arranged on the first transmission member is a first roller and a roller arranged on the second transmission member is a second roller; the first transmission member and the second transmission member are connected with the elastic member; the first transmission member or the second transmission member is movably connected with the third transmission member; the first roller and the outer cam surface of the first cam are in rolling cooperation, so that the third transmission member cooperates with the lifting stroke of the presser foot, and the second roller and the outer cam surface of the second cam are in rolling cooperation, so that the third transmission member cooperates with the descending stroke of the presser foot.

[0014] An embroidery machine comprising the differential cooperation device of the presser foot.

[0015] A transmission assembly comprising an oil injection mechanism, a main shaft and a cam; the cam is arranged on the main shaft, and the roller and the cam are in rolling cooperation.

[0016] As a further improvement of the utility model, the roller and the outer cam surface of the cam are in rolling cooperation.

[0017] As a further improvement of the utility model, the cam is arranged as a groove cam and has a ring groove, and the roller and the ring groove of the cam are in rolling cooperation.

[0018] An embroidery machine comprising the transmission assembly.

[0019] The utility model has the advantages of:

[0020] The oil injection channel, the first oil injection hole and the second oil injection hole form an oil supply path in the transmission assembly, and the oil is applied to the roller by the oil absorbing member, so that an oil film is formed on the outer cam surface of the roller, which can significantly reduce the friction of the roller, thereby improving the smoothness of the roller and reducing the wear of the roller; in addition, since the lubricating oil passes through the first oil injection hole and the second oil injection hole in sequence, the fulcrum shaft, the shaft sleeve and the sleeve joint part of the transmission member can be lubricated, thereby improving the smoothness of the relative rotation of the three and reducing the wear. BRIEF DESCRIPTION OF DRAWINGS

[0021] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are intended to assist in understanding the purpose and advantages of the present application.

[0022] Figure 1 It is an exploded schematic view of the oil injection mechanism of the transmission assembly.

[0023] Figure 2 It is a schematic view of the fulcrum shaft.

[0024] Figure 3 It is a schematic view of the shaft sleeve.

[0025] Figure 4 It is a schematic view of the transmission member.

[0026] Figure 5 It is a schematic view of the transmission member, the oil absorbing member and the roller.

[0027] Figure 6 It is a schematic view of the roller and the oil absorbing member.

[0028] Figure 7 It is a schematic view of the differential matching device of the presser foot. DETAILED DESCRIPTION

[0029] The present application will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] In this specification, the orientation terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structure shown in the drawings, and the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component, which are relative concepts, so they can change accordingly according to their different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0031] Embodiment 1:

[0032] An oil injection mechanism of a transmission assembly, with reference to Figures 1-6, including fulcrum shaft 1, shaft sleeve 2, transmission member 3, roller 4 and oil absorption member 5. Wherein, the shaft sleeve 2 is sleeved on the fulcrum shaft 1, the transmission member 3 is sleeved on the shaft sleeve 2, and the roller 4 is arranged on the transmission member 3. The fulcrum shaft 1 has an oil injection channel a, which is arranged along the axial direction of the fulcrum shaft 1 and forms an opening at one end of the fulcrum shaft 1, and the fulcrum shaft 1 has a first oil injection hole b1 penetrating the outer wall and the inner wall, so that the first oil injection hole b1 and the oil injection channel a are communicated. The shaft sleeve 2 has a second oil injection hole b2 penetrating the outer wall and the inner wall.

[0033] In the embodiment, the oil injection channel a is injected with lubricating oil through the opening, and the lubricating oil is sequentially absorbed by the oil absorption member 5 through the first oil injection hole b1 and the second oil injection hole b2, and then penetrates the oil absorption member 5, and the outer rolling surface of the roller 4 contacts the oil absorption member 5 to smear the lubricating oil on the outer cam surface of the roller 4.

[0034] In the embodiment, the oil injection channel a, the first oil injection hole b1 and the second oil injection hole b2 form an oil supply passage in the transmission assembly, and the roller 4 is smeared with lubricating oil by the oil absorption member 5, so that an oil film is formed on the outer cam surface of the roller 4, which can significantly reduce the friction of the roller 4, thereby improving the smoothness of the roller 4 and reducing the wear of the roller 4; in addition, since the lubricating oil sequentially passes through the first oil injection hole b1 and the second oil injection hole b2, the sleeve part 31 of the fulcrum shaft 1, the shaft sleeve 2 and the transmission member 3 can be lubricated, thereby improving the smoothness and reducing the wear when the three rotate relative to each other.

[0035] In the embodiment, the inner wall of the shaft sleeve 2 has a first oil injection groove c1 extending in the circumferential direction, and the inner port of the second oil injection hole b2 is located on the first oil injection groove c1. The first oil injection groove c1 is arranged so that the lubricating oil injected from the oil injection channel a forms a storage and buffer for the lubricating oil between the shaft sleeve 2 and the fulcrum shaft 1.

[0036] In the embodiment, the outer wall of the shaft sleeve 2 has a second oil injection groove c2 extending in the circumferential direction, and the outer port of the second oil injection hole b2 is located on the second oil injection groove c2. The second oil injection groove c2 is arranged to store and buffer the lubricating oil, and the transmission member 3 rotates around the shaft sleeve 2, so that the oil absorption member 5 can absorb the lubricating oil from the second oil injection groove c2, thereby avoiding the problem of insufficient lubricating oil absorption caused by the fact that the oil absorption member 5 cannot always correspond to the outer port of the second oil injection hole b2 during rotation, so that the lubricating part 52 of the oil absorption member 5 can continuously smear the lubricating oil on the outer cam surface of the roller 4.

[0037] In the embodiment, the outer wall of the fulcrum shaft 1 has an oil guide groove c3 extending in a spiral line. The lubricating oil enters the second oil injection groove c2 through the oil injection channel a and the first oil injection hole b1, is stored in the second oil injection groove c2 and continuously flows into the oil guide groove c3. Since the oil guide groove c3 extends in a spiral line, the lubricating oil can cover the space between the outer wall of the fulcrum shaft 1 and the inner wall of the shaft sleeve 2, thereby achieving better lubrication.

[0038] In the embodiment, the covering length of the oil guide groove c3 along the axial direction of the fulcrum shaft 1 is less than the length of the shaft sleeve 2, and the oil guide groove c3 is located within the length range of the shaft sleeve 2. Therefore, the lubricating oil is locked in the range of the fulcrum shaft 1 located in the shaft sleeve 2, avoiding the leakage of the lubricating oil.

[0039] In the embodiment, the transmission member 3 has a sleeve joint part 31 sleeved on the outer wall of the fulcrum shaft 1 and a mounting part 32 connected to the sleeve joint part 31 and used for arranging the roller 4. The sleeve joint part 31 has a sleeve joint hole b3 with a mounting hole b3 penetrating through the outer wall and the inner wall thereof. The oil suction member 5 is inserted into the mounting hole b3. The arrangement of the mounting hole b3 in the sleeve joint part 31 can fix the position of the oil suction member 5, so that the oil suction state and the smearing state of the oil suction member 5 remain stable, thereby providing a stable lubrication state for the roller 4.

[0040] In the embodiment, the oil suction member 5 is arranged as a felt member, which can provide stable oil absorption and smearing functions.

[0041] Embodiment 2

[0042] A differential cooperation device of a presser foot, referring to Figure 7 , comprising an oil injection mechanism, a main shaft 101, a first cam 102 and a second cam 103 arranged on the main shaft 101, a third transmission member 104 and an elastic member 105. The power transmission assembly is provided with two transmission members 3, namely a first transmission member 3a and a second transmission member 3b. The roller 4 arranged on the first transmission member 3a is a first roller 4a, and the roller 4 arranged on the second transmission member 3b is a second roller 4b. The first transmission member 3a and the second transmission member 3b are connected with the elastic member 105. The first transmission member 3a or the second transmission member 3b is movably connected with the third transmission member 104. The rolling cooperation between the first roller 4a and the outer cam surface of the first cam 102 enables the third transmission member 104 to cooperate with the lifting stroke of the presser foot. The rolling cooperation between the second roller 4b and the outer cam surface of the second cam 103 enables the third transmission member 104 to cooperate with the descending stroke of the presser foot.

[0043] The oil injection mechanism is as shown in Embodiment 1.

[0044] Embodiment 3:

[0045] An embroidery machine comprising a differential engagement device of a presser foot, as shown in Embodiment 2.

[0046] Embodiment 4:

[0047] A transmission assembly comprising the oil injection mechanism, a main shaft, a cam, wherein the oil injection mechanism is as shown in Embodiment 1. The cam is arranged on the main shaft, and the roller and the cam are in rolling engagement.

[0048] In one embodiment, the roller and the outer cam surface of the cam are in rolling engagement, and the two are in rolling engagement in the same manner as Embodiment 2.

[0049] In another embodiment, the cam is arranged as a groove cam and has an annular groove, and the roller and the annular groove of the cam are in rolling engagement. The structure of the groove cam can refer to the prior application CN201720217296.1 of the applicant. In CN201720217296.1, the track groove of the cam is the annular groove in the present embodiment, and the rolling body is the roller in the present embodiment.

[0050] Embodiment 5:

[0051] An embroidery machine comprising a transmission assembly, as shown in Embodiment 4.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An oil injection mechanism of a transmission assembly, characterized by, The oil injection mechanism comprises a fulcrum shaft, a shaft sleeve sleeved on the fulcrum shaft, a transmission member sleeved on the shaft sleeve, a roller arranged on the transmission member, and an oil absorbing member; the fulcrum shaft has an oil injection channel extending in the axial direction, and the fulcrum shaft has a first oil injection hole penetrating the outer wall and the inner wall thereof; the shaft sleeve has a second oil injection hole penetrating the outer wall and the inner wall thereof; the outer rolling surface of the roller is in contact with the oil absorbing member, and the oil absorbing member is used for absorbing lubricating oil sequentially passing through the oil injection channel, the first oil injection hole and the second oil injection hole, and applying the lubricating oil on the outer rolling surface of the roller when the roller rolls.

2. The oiling mechanism of a transmission assembly according to claim 1, wherein The inner wall of the shaft sleeve has a first oil injection groove extending in the circumferential direction, and the inner port of the second oil injection hole is located on the first oil injection groove.

3. The oiling mechanism of a transmission assembly according to claim 1, wherein The outer wall of the shaft sleeve has a second oil injection groove extending in the circumferential direction, and the outer port of the second oil injection hole is located on the second oil injection groove.

4. The oiling mechanism of a transmission assembly according to claim 2, wherein The outer wall of the fulcrum shaft has a guide oil groove extending in the form of a spiral line.

5. The oiling mechanism of a transmission assembly according to claim 4, wherein, The covering length of the guide oil groove in the axial direction of the fulcrum shaft is less than the length of the shaft sleeve, and the guide oil groove is located within the length range of the shaft sleeve.

6. The oiling mechanism of a transmission assembly according to claim 1, wherein The transmission member has a sleeving portion sleeved on the outer wall of the fulcrum shaft, a mounting portion connected to the sleeving portion and used for arranging the roller, and the sleeving portion has a sleeving hole with a mounting hole penetrating the outer wall and the inner wall thereof, and the oil absorbing member is inserted into the mounting hole.

7. The oiling mechanism of a transmission assembly according to claim 1, wherein The oil absorbing member is arranged in the form of a felt member.

8. A differential engagement device for a presser foot, characterized by The differential speed matching device comprises the oil injection mechanism, the main shaft, the first cam and the second cam arranged on the main shaft, the third transmission member, and the elastic member, the transmission assembly is provided with two transmission members, i.e., the first transmission member and the second transmission member, the roller arranged on the first transmission member is the first roller, and the roller arranged on the second transmission member is the second roller, the first transmission member and the second transmission member are connected with the elastic member, the first transmission member or the second transmission member is movably connected with the third transmission member, the first roller and the outer cam surface of the first cam are in rolling cooperation, so that the third transmission member cooperates with the lifting stroke of the presser foot, and the second roller and the outer cam surface of the second cam are in rolling cooperation, so that the third transmission member cooperates with the descending stroke of the presser foot.

9. An embroidery machine, characterized in that, The differential speed matching device comprises the presser foot.

10. A transmission assembly characterized by, The differential speed matching device comprises the oil injection mechanism, the main shaft, and the cam, the cam is arranged on the main shaft, and the roller and the cam are in rolling cooperation.

11. The transmission assembly of claim 10, wherein, The roller and the outer cam surface of the cam are in rolling cooperation.

12. The transmission assembly of claim 10, wherein, The cam is arranged in the form of a groove cam and has a ring groove, and the roller and the ring groove of the cam are in rolling cooperation.

13. An embroidery machine, characterized in that The transmission assembly comprises any one of claims 10-12.

Images