Multifunctional presser foot head capable of achieving automatic lubrication

Abstract

The utility model discloses a multifunctional presser foot head capable of realizing automatic lubrication, which comprises a presser foot bottom plate and a presser foot handle, two sides of the presser foot bottom plate are respectively provided with a connecting arm, the presser foot bottom plate is provided with a connecting table, a positioning shaft is arranged between the two connecting arms, the presser foot handle is provided with a shaft hole which is assembled with the positioning shaft in a rotating mode, and the connecting table is connected with the shaft hole. An arc-shaped groove concentric with the circle center of the shaft hole is formed in the side wall of the presser foot handle, a guide block in sliding connection with the arc-shaped groove is arranged on the inner wall of the connecting arm, a lubricating liquid bag is arranged on the connecting table, a clamping plate used for clamping and extruding the lubricating liquid bag is arranged on the presser foot handle, and a plurality of lubricating liquid outlet holes are formed in the side wall of the positioning shaft. And a liquid outlet of the lubricating liquid bag is communicated with the lubricating liquid outlet hole through the connecting arm and a liquid path channel arranged in the positioning shaft. According to the automatic lubricating device, the lubricating liquid bag can be extruded to release the lubricating liquid to the positioning shaft through relative swinging of the presser foot bottom plate and the presser foot handle, and therefore the automatic lubricating effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technology field of presser feet, in particular to a multifunctional presser foot head capable of realizing automatic lubrication. BACKGROUND

[0002] As a core functional component in sewing equipment, the presser foot head is mainly used for applying pressure to cloth during sewing and realizing stable cloth feeding in cooperation with a feeding mechanism. Presser feet are classified into flat sewing machine presser feet, overlock machine presser feet and special machine presser feet according to the performance of sewing machines, and are classified into ordinary presser feet and special presser feet according to functions. There are many types of special presser feet, such as hemming presser feet, feeding presser feet and double-needle presser feet.

[0003] However, when facing uneven fabric processing, the fabric cannot move smoothly under the presser foot head, and the existing presser foot head still has some problems in terms of use durability. For example, components are prone to wear and tear during long-term use, or the components need to be lubricated regularly. If the user forgets to operate, the wear and tear will be more severe. Therefore, breakthroughs are needed in these problems. SUMMARY

[0004] To solve the above technical problems, the utility model provides a multifunctional presser foot head capable of realizing automatic lubrication.

[0005] The technical scheme of the utility model is: a multifunctional presser foot head capable of realizing automatic lubrication, comprising a presser foot bottom plate and a presser foot handle, one connecting arm is arranged on each side of the presser foot bottom plate, a connecting table is arranged on the presser foot bottom plate, a positioning shaft is arranged between the two connecting arms, an axle hole is arranged on the presser foot handle and rotationally assembled with the positioning shaft, an arc-shaped groove concentric with the center of the axle hole is arranged on the side wall of the presser foot handle, a guide block slidingly connected with the arc-shaped groove is arranged on the inner wall of the connecting arm, a lubricating liquid bag is arranged on the connecting table, a clamping plate for clamping and extruding the lubricating liquid bag is arranged on the presser foot handle, a plurality of lubricating liquid outlets are arranged on the side wall of the positioning shaft, and the outlet of the lubricating liquid bag is communicated with the lubricating liquid outlets through a liquid channel arranged in the connecting arm and the positioning shaft.

[0006] Further, the connecting table has a cavity, a storage body for storing lubricating liquid is arranged in the cavity, a liquid inlet is arranged on the side wall of the storage body and penetrates through the connecting table, and the liquid inlet of the lubricating liquid bag extends into the lower part of the storage body through a pipeline.

[0007] Explanation: The storage body arranged in the connecting table can store a larger capacity of lubricating liquid, so as to supplement the lubricating liquid bag at any time during use, thereby prolonging the use time of the automatic lubrication of the presser foot head.

[0008] Further, a plurality of springs are arranged in the lubricating liquid bag, and the guide block is connected with the side wall of the arc-shaped groove through the springs.

[0009] By the setting of the spring, the reset of the hinge state of the presser foot handle and the presser foot bottom plate to the lubricating liquid bag can be enhanced, so that the presser foot bottom plate can keep a better pressing effect on the contact surface.

[0010] Further, a strip-shaped sunken groove is arranged on the bottom surface of the presser foot bottom plate, and a transmission belt set is arranged in the strip-shaped sunken groove.

[0011] By the setting of the transmission belt set, the friction coefficient between the presser foot bottom plate and the contact surface can be further reduced, so that the moving fluency of the presser foot bottom plate is improved.

[0012] Further, a lubricating liquid groove is arranged on the end surface of the shaft rod, and the lubricating liquid groove is communicated with the liquid outlet of the lubricating liquid bag through the liquid channel of the connecting arm.

[0013] By the setting of the lubricating liquid groove on the shaft rod, the self-lubricating characteristic of the presser foot head can be further utilized, the lubricating liquid is guided into the rotating hinge of the shaft rod through the liquid channel, the rotating fluency of the shaft rod is improved, and the use effect of the transmission belt set is further enhanced.

[0014] The presser foot head has the following beneficial effects:

[0015] (1) The presser foot head can smoothly slide from the presser foot bottom plate when passing through uneven fabric, and during this period, the relative swing of the presser foot bottom plate and the presser foot handle can be utilized to extrude the lubricating liquid bag to release lubricating liquid to the positioning shaft, so that the connection between the presser foot bottom plate and the presser foot handle keeps smooth swing, and the effect of automatic lubrication is realized.

[0016] (2) The presser foot head can reduce the friction coefficient between the presser foot bottom plate and the fabric by arranging the transmission belt set on the bottom surface of the presser foot bottom plate, so that the fluency of the relative movement of the presser foot bottom plate and the fabric is improved, and the lubricating liquid release effect of the presser foot head is further utilized to realize the effect of automatic lubrication of the shaft rod, and the use effect of the transmission belt set is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure diagram of the presser foot head of the utility model Figure 1 ;

[0018] Figure 2 is a structure diagram of the presser foot head of the utility model Figure 2 ;

[0019] Figure 3 is a structure diagram of the presser foot head of the utility model

[0020] Figure 4This is a schematic diagram of the presser foot handle of this utility model;

[0021] Figure 5 This is a utility model Figure 3 Longitudinal cross-section;

[0022] Among them, 1-presser foot base plate, 11-strip groove, 12-shaft rod, 13-transmission belt, 2-presser foot handle, 21-shaft hole, 22-arc groove, 3-connecting arm, 31-guide block, 4-connecting platform, 5-positioning shaft, 6-lubricating fluid bladder, 7-clamping plate, 8-compartment. Detailed Implementation

[0023] The present invention will now be described in more detail with reference to specific embodiments, so as to better demonstrate the advantages of the present invention.

[0024] Example 1: As Figure 1 , Figure 3 , Figure 4 As shown, a multi-functional presser foot head capable of automatic lubrication includes a presser foot base plate 1 and a presser foot handle 2. Each side of the presser foot base plate 1 has a connecting arm 3, and a connecting platform 4 is provided on the presser foot base plate 1. A positioning shaft 5 is provided between the two connecting arms 3. The presser foot handle 2 has a shaft hole 21 for rotatable assembly with the positioning shaft 5. The side wall of the presser foot handle 2 has an arc-shaped groove 22 concentric with the center of the shaft hole 21. The inner wall of the connecting arm 3 has a guide block 31 slidably connected to the arc-shaped groove 22. A lubricating fluid bladder 6 is provided on the connecting platform 4. The presser foot handle 2 has a clamping plate 7 for clamping and squeezing the lubricating fluid bladder 6. Specifically… When the presser foot base plate 1 and presser foot handle 2 are in a state where no deflection or swing occurs, the protruding part of the clamping plate 7 is located in the middle recess of the lubricating fluid bladder 6. The side wall of the positioning shaft 5 has several lubricating fluid outlet holes. The outlet of the lubricating fluid bladder 6 is connected to the lubricating fluid outlet holes through the connecting arm 3 and the fluid passage provided in the positioning shaft 5. The outlet has a commercially available one-way valve that allows the lubricating fluid to be discharged unidirectionally from the lubricating fluid bladder 6. The lubricating fluid bladder 6 has several springs inside. The springs are arranged along the squeezing direction of the clamping plate 7 on the lubricating fluid bladder 6, and the guide block 31 is connected to one side wall of the arc groove 22 through the springs. The lubricating fluid bladder 6 is filled with commercially available lubricating fluid.

[0025] The working principle of the presser foot head is as follows: when the fabric is placed under the presser foot base plate 1, the presser foot base plate 1 will swing, thereby causing the lubricating fluid bladder 6 and the clamping plate 7 to move relative to each other. Or when the presser foot base plate 1 is on an uneven fabric, the presser foot base plate 1 will swing, and the lubricating fluid bladder 6 will be squeezed, causing the lubricating fluid to flow into the lubricating fluid outlet of the positioning shaft 5 through the outlet and the fluid passage. This allows the lubricating fluid to wet the shaft hole 21 of the positioning shaft 5 and the presser foot handle 2, maintaining the smooth rotation of the presser foot handle 2 and the positioning shaft 5, and realizing the automatic lubrication function of the connection between the presser foot handle 2 and the positioning shaft 5.

[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that, as shown in Figure 2 , Figure 5 the connecting table 4 has a cavity, and a storage body 8 for storing lubricating liquid is arranged in the cavity. The side wall of the storage body 8 is provided with a liquid filling port penetrating through the connecting table 4. It can be understood that the liquid filling port is in a closed state during use. The liquid inlet of the lubricating liquid bag 6 extends into the lower part of the storage body 8 through a pipeline, and a commercially available one-way valve is arranged at the liquid inlet to allow the lubricating liquid to flow into the lubricating liquid bag 6 in one direction.

[0027] The working principle of the above-mentioned presser foot is as follows: on the basis of the working principle of Embodiment 1, after the clamping plate 7 is reset, i.e. when the presser foot base plate 1 and the presser foot handle 2 are in a state where no deflection swing occurs, the lubricating liquid bag 6 returns to the initial state, and the lubricating liquid in the storage body 8 is sucked into the lubricating liquid bag 6 under the action of negative pressure to replenish it, so that the lubricating liquid bag 6 is always filled with lubricating liquid for the next triggering use.

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 is that, as shown in Figure 2 , a strip-shaped sunken groove 11 is arranged on the bottom surface of the presser foot base plate 1, and a transmission belt set is arranged in the strip-shaped sunken groove 11. The transmission belt set is composed of a plurality of shaft rods 12 rotatably connected with the side wall of the strip-shaped sunken groove 11 and a transmission belt 13 sleeved on the shaft rods 12.

[0029] The working principle of the above-mentioned presser foot is as follows: on the basis of the working principle of Embodiment 1, when the presser foot base plate 1 contacts with the fabric, the transmission belt 13 can roll to reduce the friction between the presser foot base plate 1 and the fabric, so that the relative sliding between the two is more smooth.

[0030] Embodiment 4: The difference between this embodiment and Embodiment 3 is that, as shown in Figure 5 , the end surface of the shaft rod 12 has a lubricating liquid groove, and the lubricating liquid groove is in communication with the liquid outlet of the lubricating liquid bag 6 through the liquid channel of the connecting arm 3.

[0031] The working principle of the above-mentioned presser foot is as follows: on the basis of the working principle of Embodiment 3, when the lubricating liquid bag 6 is squeezed to flow out lubricating liquid, the lubricating liquid flows into the lubricating liquid groove through the liquid channel, so that the rotating connection between the shaft rod 12 and the connecting arm 3 is infiltrated with lubricating liquid, thereby improving the rotating smoothness of the two.

Claims

1. A multi-functional presser foot head capable of automatic lubrication, characterized by, The utility model provides a presser foot, which comprises a presser foot base plate (1) and a presser foot handle (2), the presser foot base plate (1) is provided with a connecting arm (3) on each side, and a connecting table (4) is arranged on the presser foot base plate (1); a positioning shaft (5) is arranged between the two connecting arms (3); the presser foot handle (2) is provided with a shaft hole (21) rotatably connected with the positioning shaft (5); an arc-shaped groove (22) concentric with the center of the shaft hole (21) is arranged on the side wall of the presser foot handle (2); a guide block (31) is arranged on the inner wall of the connecting arm (3) and is in sliding connection with the arc-shaped groove (22); a lubricating liquid bag (6) is arranged on the connecting table (4); a clamping plate (7) is arranged on the presser foot handle (2) and is used for clamping and extruding the lubricating liquid bag (6); a plurality of lubricating liquid outlets are arranged on the side wall of the positioning shaft (5); the outlet of the lubricating liquid bag (6) is in communication with the lubricating liquid outlets through the liquid channel arranged in the connecting arm (3) and the positioning shaft (5).

2. The multi-functional presser foot head capable of automatic lubrication according to claim 1, wherein The connecting table (4) has a cavity, and a storage bin (8) for storing lubricating liquid is arranged in the cavity; the side wall of the storage bin (8) is provided with a liquid inlet opening through the connecting table (4); and the liquid inlet of the lubricating liquid bag (6) extends into the lower part of the storage bin (8) through a pipeline.

3. The multi-functional presser foot head capable of automatic lubrication according to claim 1, wherein A plurality of springs are arranged in the lubricating liquid bag (6), and the guide block (31) is connected with the side wall of the arc-shaped groove (22) through the springs.

4. The multi-functional presser foot head capable of automatic lubrication according to claim 1, wherein A strip-shaped groove (11) is arranged on the bottom surface of the presser foot base plate (1), and a transmission belt set is arranged in the strip-shaped groove (11); the transmission belt set comprises a plurality of shaft rods (12) rotatably connected with the side wall of the strip-shaped groove (11) and a transmission belt (13) sleeved on the shaft rods (12).

5. The multi-functional presser foot head capable of automatic lubrication according to claim 4, wherein A lubricating liquid groove is arranged on the end surface of the shaft rod (12), and the lubricating liquid groove is in communication with the outlet of the lubricating liquid bag (6) through the liquid channel of the connecting arm (3).

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