Sewing machine presser foot rod allowing temperature adjusting medium to flow in and presser foot rod structure of sewing machine presser foot rod

Abstract

The utility model discloses a sewing machine presser foot rod capable of allowing temperature adjusting medium to flow in and a presser foot rod structure thereof, which comprises a rod body and a pressing rod arranged at the bottom of the rod body, the rod body and the pressing rod are detachably connected or integrally formed, and the pressing rod is arranged on the rod body. A first temperature adjusting medium flow channel is formed in the middle of the rod body, a second temperature adjusting medium flow channel is formed in the pressing rod, the first temperature adjusting medium flow channel is communicated with the second temperature adjusting medium flow channel, and an arc-shaped pressing foot or an annular pressing foot is arranged at the bottom of the pressing rod. An arc-shaped nest hole communicated with the second temperature adjusting medium flow channel is formed in the arc-shaped presser foot, and an annular nest hole communicated with the second temperature adjusting medium flow channel is formed in the annular presser foot; a presser foot rod structure comprises a sewing machine presser foot rod, a medium pipeline, a valve and a medium generator, wherein a temperature adjusting medium can flow into the sewing machine presser foot rod.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine presser foot rods, in particular to a sewing machine presser foot rod capable of being flowed into by a temperature regulating medium and a presser foot rod structure thereof. Background Art

[0002] The presser foot bar is a crucial component of a sewing machine. It's mounted on the machine head and, thanks to an up-and-down sliding assembly inside the head, allows the bar to slide up and down, compacting and loosening the sewing material. To use the bar, place the sewing material underneath it. Next, the up-and-down sliding assembly presses the bar against the top of the material. The bottom of the material has feed teeth, so the material is pressed between the bar and the feed teeth, allowing it to slide slowly between them. Next, the area to be sewn in the material is aligned with the inner cavity of the presser foot on the bar. Finally, the needle bar assembly is activated, allowing the needle to pass through the inner cavity of the presser foot, allowing the area to be sewn to begin sewing.

[0003] The existing sewing machine presser foot bar does not have the function of adjusting the temperature of the machine needle. There are many patents that have similar functions (for example, patent document number: CN211620830U, patent name: A Chinese utility model patent for a machine needle cooling device in a sewing machine, which uses a cooling device arranged outside the sewing machine to cool the machine needle), but most of these patents are to set a gas temperature control device outside the sewing machine, and then the gas temperature control device blows air to adjust the temperature of the machine needle. However, the disadvantages of these patents are: 1. The direction of the air blowing temperature control is tilted downward, and the single downward blowing force will blow the needle thread apart, causing sewing failure; 2. The blowing device is complicated and will block the sewing personnel's field of vision during sewing, making it inconvenient for the sewing personnel to observe and adjust the sewing situation. Utility Model Content

[0004] The purpose of the present utility model is to overcome the above-mentioned defects in the prior art and to provide a sewing machine presser foot rod and a presser foot rod structure into which a temperature regulating medium can flow. The sewing machine presser foot rod is redesigned into a structure into which a temperature regulating medium can flow, thereby effectively saving space for the sewing machine and making it convenient for the sewing personnel to observe and adjust the sewing situation. At the same time, its arc-shaped holes or annular holes can provide a uniform medium eddy current, so that the thread will not be blown away during the downward sewing process of the needle, thereby effectively regulating the temperature of the needle and the sewing material.

[0005] To achieve the above objectives, the present invention is implemented through the following two aspects:

[0006] First: A sewing machine presser foot rod for allowing a temperature-regulating medium to flow into, comprising a rod body and a pressure rod installed at the bottom of the rod body, the rod body and the pressure rod being detachably connected or integrally formed, a first temperature-regulating medium flow channel being provided in the middle of the rod body, a second temperature-regulating medium flow channel being provided on the pressure rod, the first temperature-regulating medium flow channel being connected to the second temperature-regulating medium flow channel, an arc-shaped presser foot or a ring-shaped presser foot being provided at the bottom of the pressure rod, an arc-shaped socket being provided on the arc-shaped presser foot being connected to the second temperature-regulating medium flow channel, and an annular socket being provided on the ring-shaped presser foot being connected to the second temperature-regulating medium flow channel.

[0007] Preferably, the first temperature control medium flow channel includes a medium inlet channel opened at the upper end of the middle part of the rod body, the bottom of the medium inlet channel is connected to the first medium delivery channel, one side of the first medium delivery channel is connected to the first medium matching channel, the first medium matching channel is opened on an outer wall of the rod body, the second temperature control medium flow channel includes a second medium matching channel opened on an inner wall of the pressure rod, one end of the first medium matching channel is fitted and connected with one end of the second medium matching channel, the bottom of the second medium matching channel is connected with the second medium delivery channel, the second medium delivery channel is connected to the arc-shaped socket, and the second medium delivery channel is connected to the annular socket.

[0008] Preferably, an inlet for medium inflow is provided at the top of the medium inflow channel.

[0009] Preferably, the diameter of the medium inflow channel is larger than that of the first medium delivery channel, and an inverted tapered portion is formed between the medium inflow channel and the first medium delivery channel.

[0010] Preferably, a transition curve is formed between the second medium delivery channel and the arc-shaped socket or between the second medium delivery channel and the annular socket.

[0011] Preferably, the arc-shaped presser foot has an arc-shaped needle threading hole cavity in the middle for the machine needle to pass through, and the arc-shaped socket is arranged on the arc-shaped needle threading hole cavity; the ring-shaped presser foot has an annular needle threading hole cavity in the middle for the machine needle to pass through, and the annular socket is arranged on the annular needle threading hole cavity.

[0012] Preferably, a clamping structure is provided at one end of the bottom of the rod body, a clamping groove is provided at one end of the top of the pressure rod, the clamping structure is clamped on the clamping groove, a threaded hole is provided in the clamping structure, and a shifting groove is provided at the other end of the top of the pressure rod. The rod body and the pressure rod are connected together by the threaded part of the bolt being threadedly connected to the threaded hole, and the head of the bolt is pressed against one end of the shifting groove.

[0013] Preferably, the first medium matching channel (14) is provided on an outer side wall of the clamping structure, and the second medium matching channel is provided on an inner side wall of the clamping groove.

[0014] The second aspect: A presser foot rod structure, comprising a sewing machine presser foot rod as described in the first aspect, into which a temperature regulating medium can flow, a medium pipeline, a valve, and a medium generator, wherein the pipeline at one end of the medium generator is connected to one end of the valve, one end of the valve is connected to the medium pipeline, and the medium pipeline is connected to a medium inflow channel of a sewing machine presser foot rod into which a temperature regulating medium can flow.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model provides a sewing machine presser foot rod for allowing a temperature regulating medium to flow in. The medium flows in through a first temperature regulating medium flow channel, and then the medium on the first temperature regulating medium flow channel flows to a second temperature regulating medium flow channel, and then flows to an arc-shaped hole or annular hole for circulation, thereby realizing the temperature regulation of the machine needle and the sewing material by the medium.

[0017] 2. The utility model provides a presser foot rod structure, which uses a medium generator, a valve and a medium pipeline to realize the introduction of a temperature-regulating medium into the above-mentioned sewing machine presser foot rod for the temperature-regulating medium to flow into, thereby realizing the uniform medium eddy flow out of the arc-shaped or annular holes to regulate the temperature of the machine needle and the sewing material. It has the advantages of fast temperature regulation speed, stable temperature regulation, ensuring that the thread on the machine needle is not blown messy, saving space, and being convenient for sewing personnel to observe and adjust sewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural schematic diagram of a sewing machine presser foot rod into which a temperature regulating medium can flow, provided in Example 1 of the present utility model;

[0020] Figure 2 This is a top view of a sewing machine presser foot rod into which a temperature regulating medium can flow, provided in Example 1 of the present utility model;

[0021] Figure 3 It is from Figure 2 A schematic diagram of a section cut along the section line AA in FIG.

[0022] Figure 4 This is a schematic structural diagram of a shaft provided in Example 1 of the present utility model;

[0023] Figure 5 It is a structural schematic diagram of the pressure rod provided in Example 1 of the present utility model.

[0024] Included in the diagram are:

[0025] 1. Rod body; 10. First temperature control medium flow channel; 11. Inlet; 12. Medium inflow channel; 120. Inverted tapered portion; 13. First medium delivery channel; 14. First medium matching channel; 15. Second medium matching channel; 17. Clamping structure; 18. Threaded hole; 2. Press rod; 20. Second temperature control medium flow channel; 21. Second medium delivery channel; 22. Transition bend; 23. Annular socket; 26. Ring-shaped presser foot; 260. Annular needle hole cavity; 27. Clamping groove; 28. Gear groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in this embodiment of the present invention to clearly and completely describe the technical solution in this embodiment of the present invention. Obviously, the embodiment described is only one embodiment of the present invention, not all embodiments of the present invention. Based on this embodiment of the present invention, all other embodiments of the present invention obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this utility model.

[0027] Example 1:

[0028] See also Figures 1 to 5 , an embodiment of the present invention provides a sewing machine presser foot rod for allowing a temperature-regulating medium to flow into, comprising a rod body 1 and a presser rod 2 mounted at the bottom of the rod body 1, the rod body 1 and the presser rod 2 being detachably connected or integrally formed, a first temperature-regulating medium flow channel 10 being opened in the middle of the rod body 1, a second temperature-regulating medium flow channel 20 being opened on the presser rod 2, the first temperature-regulating medium flow channel 10 being connected to the second temperature-regulating medium flow channel 20, an arc-shaped presser foot or a ring-shaped presser foot 26 being provided at the bottom of the presser rod 2, an arc-shaped socket being opened on the arc-shaped presser foot being connected to the second temperature-regulating medium flow channel 20 (not shown in the accompanying drawings, the arc-shaped presser foot also includes a hook-shaped arc-shaped presser foot like the back of a hammer), and an annular socket 23 being opened on the ring-shaped presser foot 26 being connected to the second temperature-regulating medium flow channel 20.

[0029] The first temperature control medium flow channel 10 includes a medium inlet channel 12 opened at the upper end of the middle part of the rod body 1, and the bottom of the medium inlet channel 12 is connected to the first medium delivery channel 13, and one side of the first medium delivery channel 13 is connected to the first medium matching channel 14, and the first medium matching channel 14 is opened on an outer wall of the rod body 1. The second temperature control medium flow channel 20 includes a second medium matching channel 15 opened on an inner wall of the pressure rod 2, one end of the first medium matching channel 14 is in contact with and connected to one end of the second medium matching channel 15, and the bottom of the second medium matching channel 15 is connected to the second medium delivery channel 21, and the second medium delivery channel 21 is connected to the arc-shaped socket, and the second medium delivery channel 21 is connected to the annular socket 23.

[0030] An inlet 11 for medium to flow in is provided at the top of the medium inflow channel 12 .

[0031] In this embodiment, the diameter of medium inflow channel 12 is larger than that of first medium delivery channel 13. This facilitates storage and provides a stable medium source. The smaller diameter of first medium delivery channel 13 facilitates the formation of a high-pressure medium source, thereby pushing the medium source from first medium delivery channel 13 into the following channel. An inverted tapered portion 120 is formed between medium inflow channel 12 and first medium delivery channel 13. This facilitates medium introduction and prevents pressure concentration and damage from the impact of the medium source. In other embodiments, the diameter of medium inflow channel 12 can be smaller than or equal to that of first medium delivery channel 13. The smaller diameter facilitates the injection of medium pressure.

[0032] A transition curve 22 is formed between the second medium delivery channel 21 and the arc-shaped socket or between the second medium delivery channel 21 and the annular socket 23 . The transition curve 22 is smoothly configured to ensure smooth outflow of the medium.

[0033] An arc-shaped needle hole cavity is opened in the middle of the arc-shaped presser foot for the machine needle to pass through, and the arc-shaped socket is arranged on the arc-shaped needle hole cavity. An annular needle hole cavity 260 is opened in the middle of the ring-shaped presser foot 26 for the machine needle to pass through, and the annular socket 23 is arranged on the annular needle hole cavity 260.

[0034] When the rod body 1 and the pressure rod 2 are detachably connected, a clamping structure 17 is provided at one end of the bottom of the rod body 1, and a clamping groove 27 is provided at one end of the top of the pressure rod 2. The clamping structure 17 is clamped on the clamping groove 27, and the clamping structure 17 is provided with a threaded hole 18. A gear groove 28 is provided at the other end of the top of the pressure rod 2. The rod body 1 and the pressure rod 2 are connected together by the threaded part of the bolt being threaded on the threaded hole 18 and the head of the bolt being pressed against one end of the gear groove 28.

[0035] The first medium matching channel 14 is formed on an outer side wall of the clamping structure 17 , and the second medium matching channel 15 is formed on an inner side wall of the clamping groove 27 .

[0036] The working principle of the sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into the utility model is as follows:

[0037] S1: A medium flows into the inlet 11 of the medium inflow channel 12. The medium can be a high-temperature gas for heating the sewing material and the needle, which are easily brittle when cooled. It can also be a cooling gas to prevent the needle and the sewing material from being damaged by high-temperature friction. It can also be a liquid such as liquid nitrogen or sewing cooling oil for temperature adjustment.

[0038] S2: The medium flows out from the first medium delivery channel 13, the first medium matching channel 14, the second medium matching channel 15, the second medium delivery channel 21, the arc-shaped socket or the annular socket 23 in sequence, thereby forming a uniform medium vortex to adjust the temperature of the needle and the sewing material, so as to achieve a stable and rapid temperature control effect.

[0039] The manufacturing principle of the sewing machine presser foot bar capable of allowing a temperature regulating medium to flow into the utility model is as follows: if the rod body 1 and the pressure rod 2 are detachably connected, the rod body 1 and the pressure rod 2 are respectively machined or die-cast and then spliced ​​together to form a shape; if the rod body 1 and the pressure rod 2 are integrally formed, the rod body 1 and the pressure rod 2 are first assembled and formed, and then integrally welded or bonded to form a shape.

[0040] The advantage of the sewing machine presser foot rod that can allow temperature-regulating medium to flow into the utility model is that: by using the presser foot rod, the temperature-regulating medium can be introduced into the presser foot rod, thereby stably and quickly adjusting the temperature, ensuring that the thread on the machine needle is not blown disorderly, saving space, and making it convenient for sewing personnel to observe and adjust sewing.

[0041] Example 2:

[0042] This embodiment provides a presser foot rod structure, including a sewing machine presser foot rod through which a temperature-regulating medium can flow, a medium pipeline, a valve, and a medium generator as described in Example 1. The pipeline at one end of the medium generator is connected to one end of the valve, one end of the valve is connected to the medium pipeline, and the medium pipeline is connected to a first temperature-regulating medium flow channel 10 of the sewing machine presser foot rod through which a temperature-regulating medium can flow.

[0043] The medium pipeline, valve and medium generator are prior art and are not shown in the drawings.

[0044] In addition, in the sewing machine, a sewing machine presser foot rod for allowing the temperature regulating medium to flow in is installed on the head of the sewing machine, and the valve and the medium generator are installed on one side of the sewing machine. The medium pipeline passes through the top of the sewing machine head and is connected to the inlet 11 of the medium inflow channel 12.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewing machine presser foot rod into which a temperature regulating medium can flow, characterized in that: The invention comprises a rod body (1) and a pressure rod (2) installed at the bottom of the rod body (1); the rod body (1) and the pressure rod (2) are detachably connected or integrally formed; a first temperature regulating medium flow channel (10) is provided in the middle of the rod body (1); a second temperature regulating medium flow channel (20) is provided on the pressure rod (2); the first temperature regulating medium flow channel (10) is communicated with the second temperature regulating medium flow channel (20); an arc-shaped pressure foot or an annular pressure foot (26) is provided at the bottom of the pressure rod (2); an arc-shaped socket connected to the second temperature regulating medium flow channel (20) is provided on the arc-shaped pressure foot; and an annular socket (23) connected to the second temperature regulating medium flow channel (20) is provided on the annular pressure foot (26).

2. A sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 1, characterized in that: The first temperature-regulating medium flow channel (10) includes a medium inflow channel (12) provided at the upper middle end of the rod body (1), the bottom of the medium inflow channel (12) is connected to a first medium delivery channel (13), one side of the first medium delivery channel (13) is connected to a first medium matching channel (14), the first medium matching channel (14) is provided on an outer side wall of the rod body (1), the second temperature-regulating medium flow channel (20) includes a second medium matching channel (15) provided on an inner side wall of the pressure rod (2), one end of the first medium matching channel (14) is fitted with and connected to one end of the second medium matching channel (15), the bottom of the second medium matching channel (15) is connected to a second medium delivery channel (21), the second medium delivery channel (21) is connected to the arc-shaped socket, and the second medium delivery channel (21) is connected to the annular socket (23).

3. A sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2, characterized in that: An inlet (11) for medium inflow is provided at the top of the medium inflow channel (12).

4. A sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2, characterized in that: The diameter of the medium inflow channel (12) is larger than that of the first medium delivery channel (13), and an inverted tapered portion (120) is formed between the medium inflow channel (12) and the first medium delivery channel (13).

5. The sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2, characterized in that: The second medium conveying channel (21) is arranged in an inclined shape.

6. A sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2 or 5, characterized in that: A transition curve (22) is formed between the second medium delivery channel (21) and the arc-shaped socket or between the second medium delivery channel (21) and the annular socket (23).

7. The sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2, characterized in that: The arc-shaped presser foot is provided with an arc-shaped needle-threading hole cavity in the middle for the machine needle to pass through, and the arc-shaped socket is arranged on the arc-shaped needle-threading hole cavity. The ring-shaped presser foot (26) is provided with an annular needle-threading hole cavity (260) in the middle for the machine needle to pass through, and the annular socket (23) is arranged on the annular needle-threading hole cavity (260).

8. The sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 2, characterized in that: A clamping structure (17) is provided at one end of the bottom of the rod body (1), and a clamping groove (27) is provided at one end of the top of the pressure rod (2). The clamping structure (17) is clamped on the clamping groove (27), and a threaded hole (18) is provided on the clamping structure (17). A shifting groove (28) is provided at the other end of the top of the pressure rod (2). The rod body (1) and the pressure rod (2) are connected together by a threaded portion of a bolt being threadedly connected to the threaded hole (18) and a head of the bolt being pressed against one end of the shifting groove (28).

9. The sewing machine presser foot rod capable of allowing a temperature regulating medium to flow into according to claim 8, characterized in that: The first medium matching channel (14) is provided on an outer side wall of the clamping structure (17), and the second medium matching channel (15) is provided on an inner side wall of the clamping groove (27).

10. A presser foot rod structure, characterized in that: The invention comprises a sewing machine presser foot rod through which a temperature regulating medium can flow, a medium pipeline, a valve and a medium generator as described in any one of claims 1 to 9, wherein a pipeline at one end of the medium generator is connected to one end of the valve, one end of the valve is connected to the medium pipeline, and the medium pipeline is connected to a first temperature regulating medium flow channel (10) of a sewing machine presser foot rod through which a temperature regulating medium can flow.

Images