A lifting device for mop wheel and presser foot

Abstract

The utility model discloses a lifting device for a mop wheel and a presser foot, and relates to the technical field of sewing machines. The utility model comprises a mop wheel and a mounting assembly, wherein a relative height adjustment assembly is arranged on the top of the mounting assembly, and the relative height adjustment assembly comprises a telescopic rod, wherein a sleeve is slidably sleeved on the peripheral side surface of the telescopic rod, and a clamping component is fixed on the peripheral side surface of the sleeve, and the clamping component comprises a fixed shell, wherein a button is slidably matched with one side of the fixed shell, and a first slide plate is fixed on one end of the button, and a connecting plate is rotatably matched with one side of the first slide plate, and a second slide plate is rotatably matched with one side of the connecting plate, and a plurality of clamping grooves are provided in a spiral array on the peripheral side surface of the telescopic rod. The utility model drives the first slide plate to slide by pressing the button, and the first slide plate drives the connecting plate to rotate, and the connecting plate drives the second slide plate to slide, so that one end of the second slide plate is separated from the clamping groove on the peripheral side surface of the telescopic rod, and then the telescopic rod is slid to adjust the height of the mop wheel, so that the device is suitable for mop wheels with different external sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines, in particular to a lifting device for a cloth-pulling wheel and a presser foot. Background Art

[0002] A sewing machine is a tool used to sew clothes and other textiles, in which the presser foot of the sewing machine is installed on the presser foot bar, located below the sewing machine needle. The main function of the presser foot is to fix the cloth to keep the cloth flat during sewing, and work with the cloth feed mechanism of the sewing machine to achieve uniform sewing. The drag wheel is usually installed at the rear of the sewing machine to assist in cloth feeding. It can help push the cloth to make it smoother during sewing, especially when sewing thicker or heavier cloth.

[0003] The existing lifting device for the mop wheel and the presser foot connects the presser foot rod and the mop wheel rod through a connecting rod, so that the lifting mechanism can synchronously lift the mop wheel and the presser foot, and the relative height between the mop wheel and the presser foot in the vertical direction is fixed. However, for different sewing tasks, it is necessary to replace mop wheels of different types or with different surface roughnesses. The operation of the existing lifting device when replacing the mop wheel is relatively complicated. Moreover, since the outer dimensions of different types of mop wheels may be different, the lifting device needs to adjust the height of the mop wheel relative to the presser foot in the vertical direction after replacing the mop wheel. Utility Model Content

[0004] The utility model aims to provide a lifting device for a mop wheel and a presser foot, which solves the problem that the relative height of the mop wheel and the presser foot in the vertical direction cannot be adjusted in the existing lifting device for the mop wheel and the presser foot through a relative height adjustment component.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a lifting device for a mop wheel and a presser foot, comprising a mop wheel. Two side surfaces of the mop wheel are rotatably matched with mounting components, and the top of the mounting component is provided with a relative height adjustment component.

[0007] The relative height adjustment assembly comprises a telescopic rod, a sleeve is slidably sleeved on the peripheral side of the telescopic rod, and a clamping component is fixed on the peripheral side of the sleeve.

[0008] The clamping component includes a fixed shell fixed on the peripheral side of the sleeve, a button is slidably engaged with the side of the fixed shell away from the sleeve, a first slide is fixed to one end of the button, a connecting plate is slidably engaged with one side of the first slide, a second slide is slidably engaged with one side of the connecting plate, and a spring is fixed to the end of the second slide away from the sleeve.

[0009] A plurality of slots are formed in a spiral array on the peripheral side of the telescopic rod, and the slots are engaged with the second sliding plate.

[0010] The utility model is further configured as follows: a sliding hole is provided on a side of the fixed shell away from the sleeve, the sliding hole is slidably matched with the button, a first sliding groove is provided on the bottom of the sliding hole, the first sliding groove is slidably matched with the first slide plate, a square groove is provided on one side of the first sliding groove inside the fixed shell, a second sliding groove is provided on one side of the square groove inside the fixed shell, the second sliding groove is slidably matched with the second slide plate, and one end of the second sliding groove is fixedly connected to a spring.

[0011] A supporting rod is fixed on one side of the square groove.

[0012] The utility model is further configured such that a third sliding groove is penetrated through one side surface of the first slide plate, a support hole is penetrated through one side surface of the connecting plate and rotatably engaged with the peripheral side surface of the support rod, two symmetrical connecting rods are fixed to one side of the connecting plate, a fourth sliding groove is penetrated through one side surface of the second slide plate, and the two connecting rods are respectively slidably engaged with the third sliding groove and the fourth sliding groove.

[0013] The utility model is further configured that the side surface of the telescopic rod is provided with an external thread.

[0014] The mounting assembly includes a first support plate rotatably engaged with the two side surfaces of the mop wheel, a mounting plate is fixed on the top of the two first support plates, a first threaded hole is opened on the top of the mounting plate, the mounting plate is threadedly connected to the telescopic rod, and the peripheral side surface of the telescopic rod is located at the top of the mounting plate and is threadedly connected to a limiting nut.

[0015] The utility model is further configured such that a rotating assembly is fixedly provided on the top of the sleeve, and the rotating assembly includes a rotating block fixedly connected to the top of the sleeve, a rotating shaft is rotatably fitted inside the rotating block, second support plates are fixed at both ends of the rotating shaft, and an adapter plate is commonly fixed on the top of the two second support plates.

[0016] The utility model is further configured that a side surface of the rotating block is provided with a plurality of fixing holes in a circular array.

[0017] A countersunk hole is formed through one side of the second support plate, and a second threaded hole is formed through another side of the second support plate. A bolt that passes through a fixing hole and the countersunk hole is threadedly connected inside the second threaded hole.

[0018] The utility model is further configured such that a synchronous drive assembly is provided on the top of the adapter plate, and the synchronous drive assembly includes a sleeve fixed on the top of the adapter plate, a connecting plate is fixedly sleeved on the outer peripheral side of the sleeve, a presser foot rod is fixed on the bottom of the connecting plate, and a presser foot is fixed on the bottom of the presser foot rod.

[0019] An electric push-pull rod is fixed on the inner peripheral side of the shaft sleeve.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model installs the mop wheel on the mounting assembly, and the mounting assembly is threadedly connected to the telescopic rod. The mounting assembly is removed from the telescopic rod in cooperation with the rotating assembly, and the mounting assembly with the mop wheel to be replaced is threadedly connected to the telescopic rod. The rotating assembly is then adjusted to achieve convenient and rapid replacement of the mop wheel.

[0022] 2. The utility model adjusts the height of the mop wheel relative to the presser foot by sliding the telescopic rod in the sleeve, and controls the second slide plate to be inserted into a slot on the side surface of the telescopic rod by pressing a button, so that the telescopic rod is fixed in the sleeve, so that the lifting device can be applied to mop wheels of different external sizes.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The utility model is a structural schematic diagram of a lifting device for a mop wheel and a presser foot.

[0026] Figure 2 A cross-sectional view of a relative height adjustment assembly.

[0027] Figure 3 It is a structural schematic diagram of the telescopic rod.

[0028] Figure 4 It is a cross-sectional view of the clamping component.

[0029] Figure 5 It is a cross-sectional view of the fixed shell.

[0030] Figure 6 It is a schematic diagram of the structure of the clamping parts after the fixed shell is removed.

[0031] Figure 7 A schematic diagram of the structure of the installation components.

[0032] Figure 8 An exploded view of a rotating component.

[0033] Fig. 9 It is a structural schematic diagram of the synchronous drive component.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. mop wheel; 2. mounting assembly; 201. first support plate; 202. mounting plate; 203. first threaded hole; 204. limit nut; 3. relative height adjustment assembly; 301. telescopic rod; 302. sleeve; 303. slot; 304. external thread; 4. snap-on component; 401. fixed housing; 402. button; 403. first slide plate; 404. connecting plate; 405. second slide plate; 406. spring; 407. slide hole; 408. first slide groove; 409. square groove; 41 0. Second slide groove; 411. Support rod; 412. Third slide groove; 413. Support hole; 414. Connecting rod; 415. Fourth slide groove; 5. Rotating assembly; 501. Rotating block; 502. Rotating shaft; 503. Second supporting plate; 504. Adapter plate; 505. Bolt; 506. Fixing hole; 507. Countersunk hole; 508. Second threaded hole; 6. Synchronous drive assembly; 601. Bushing; 602. Connecting plate; 603. Presser foot rod; 604. Presser foot; 605. Electric push-pull rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0038] See also Figure 1-9 The utility model is a lifting device for a mop wheel and a presser foot, comprising a mop wheel 1, two sides of the mop wheel 1 are rotatably matched with mounting components 2, a relative height adjustment component 3 is arranged on the top of the mounting component 2, the relative height adjustment component 3 comprises a telescopic rod 301, a sleeve 302 is slidably sleeved on the side of the telescopic rod 301, a clamping component 4 is fixed on the side of the sleeve 302, the clamping component 4 comprises a fixed shell 401 fixed on the side of the sleeve 302, a button 402 is slidably matched on the side of the fixed shell 401 away from the sleeve 302, a first slide plate 403 is fixed on one end of the button 402, a connecting plate 404 is slidably matched on one side of the first slide plate 403, a second slide plate 405 is slidably matched on one side of the connecting plate 404, a spring 406 is fixed on one end of the second slide plate 405 away from the sleeve 302, a plurality of card slots 303 are arranged in a spiral array on the side of the telescopic rod 301, and the card slots 303 are clamped and matched with the second slide plate 405.

[0039] The operation process of this embodiment is as follows: first select a suitable type of mop wheel 1, and then fix and install it through the installation component 2. If it is necessary to adjust the height of the mop wheel 1 relative to the presser foot 604 in the vertical direction, first hold the telescopic rod 301, and then press the button 402. The button 402 pushes the first slide plate 403 fixed at one end thereof to slide to one side in the fixed housing 401. The first slide plate 403 drives the connecting plate 404 to rotate, and the connecting plate 404 drives the second slide plate 405 to slide in the fixed housing 401 in the opposite direction of the first slide plate 403. The second slide plate 405 squeezes the first slide plate 403 fixed at one end thereof. The spring 406 is used, and the other end of the second slide plate 405 is disengaged from the slot 303, and the telescopic rod 301 can slide in the sleeve 302. When the telescopic rod 301 slides, it will drive the mop wheel 1 to move synchronously through the mounting assembly 2. When the telescopic rod 301 slides to a suitable position, the telescopic rod 301 is rotated and the button 402 is released at the same time. The rebound force of the spring 406 is used to align a slot 303 on the side of the telescopic rod 301 with one end of the second slide plate 405, and then one end of the second slide plate 405 is inserted into the slot 303 to fix the telescopic rod 301, so as to complete the height adjustment of the mop wheel 1. Specific embodiment 2

[0041] See also Figure 1-9 On the basis of the specific embodiment 1, specifically, a sliding hole 407 is provided on a side of the fixed housing 401 away from the sleeve 302, the sliding hole 407 is slidably matched with the button 402, a first sliding groove 408 is provided at the bottom of the sliding hole 407, the first sliding groove 408 is slidably matched with the first slide plate 403, a square groove 409 is provided on one side of the first sliding groove 408 inside the fixed housing 401, a second sliding groove 410 is provided on one side of the square groove 409 inside the fixed housing 401, and the second sliding groove 410 is slidably matched with the second slide plate 405 The second slide groove 410 is dynamically matched, one end of the second slide groove 410 is fixedly connected to the spring 406, a support rod 411 is fixed to one side of the square groove 409, a third slide groove 412 is penetrated on one side of the first slide plate 403, a support hole 413 is penetrated on one side of the connecting plate 404 and rotatably matched on the side of the support rod 411, two symmetrical connecting rods 414 are fixed on one side of the connecting plate 404, a fourth slide groove 415 is penetrated on one side of the second slide plate 405, and the two connecting rods 414 are respectively slidably matched with the third slide groove 412 and the fourth slide groove 415.

[0042] The operation process of this embodiment is as follows: when the button 402 is pressed, the button 402 slides in the sliding hole 407, and the button 402 drives the first slide plate 403 to slide in the first sliding groove 408. The two connecting rods 414 fixed on one side of the connecting plate 404 are respectively inserted into the third sliding groove 412 and the fourth sliding groove 415. At the same time, the connecting plate 404 is rotated and sleeved on the peripheral side surface of the support rod 411, so that the first slide plate 403 drives the connecting plate 404 to rotate in the square groove 409 through a connecting rod 414 in the third sliding groove 412, and the connecting plate 404 drives the second slide plate 405 to slide in the second sliding groove 410 through a connecting rod 414 in the fourth sliding groove 415. The setting of the third sliding groove 412 and the fourth sliding groove 415 ensures that the connecting plate 404 will not get stuck when rotating. Specific embodiment three

[0044] See also Figure 1-9 On the basis of the specific embodiment 1 and the specific embodiment 2, specifically, the side surface of the telescopic rod 301 is provided with an external thread 304, the mounting assembly 2 includes a first support plate 201 rotatably matched with the two side surfaces of the mop wheel 1, the top of the two first support plates 201 is fixed with a mounting plate 202, the top of the mounting plate 202 is provided with a first threaded hole 203, the mounting plate 202 is threadedly connected with the telescopic rod 301, the side surface of the telescopic rod 301 is located at the top of the mounting plate 202 and is threadedly connected with a limited position nut 204, the top of the sleeve 302 is fixedly provided with a rotating assembly 5, and the rotating assembly 5 includes a fixed connection to the sleeve The rotating block 501 at the top of the cylinder 302 has a rotating shaft 502 inside the rotating block 501, and second support plates 503 are fixed at both ends of the rotating shaft 502. An adapter plate 504 is fixed on the top of the two second support plates 503. A plurality of fixing holes 506 are formed in a circular array on one side of the rotating block 501, a countersunk hole 507 is formed on one side of a second support plate 503, and a second threaded hole 508 is formed on one side of another second support plate 503. A bolt 505 that penetrates a fixing hole 506 and a countersunk hole 507 is threadedly connected inside the second threaded hole 508.

[0045] The operation process of this embodiment is as follows: when disassembling and installing the mop wheel 1, first remove the bolt 505 so that the relative height adjustment component 3 and the mounting component 2 fixed at the bottom of the rotating block 501 can rotate with the rotating shaft 502 as support. After the rotating block 501 is rotated to a suitable angle, the bolt 505 can be inserted into the countersunk hole 507 and passed through a corresponding fixing hole 506 to fix the rotating block 501. Then, the mounting plate 202 is rotated so that the telescopic rod 301 is separated from the first threaded hole 203 at the top of the mounting plate 202 to complete the disassembly of the mop wheel 1. After taking out the mounting component 2 with the new mop wheel 1, and removing the first threaded hole 203 at the top of the mounting plate 202, the mounting component 2 with the new mop wheel 1 is removed. The holes 203 are aligned with the external threads 304 on the side of the telescopic rod 301, and the mounting plate 202 is rotated to be threadedly connected with the telescopic rod 301, and then the bolt 505 is pulled out, and the rotating block 501 is rotated to the working position, and the bolt 505 is threadedly connected with the second threaded hole 508. At the same time, the bolt 505 passes through the countersunk hole 507 and a corresponding fixing hole 506 to achieve fixation. After adjusting the height of the mop wheel 1, the mounting plate 202 is rotated to adjust the mop wheel 1 to a suitable working angle, and then the limiting nut 204 is rotated to make its bottom fit with the top of the mounting plate 202 to achieve the limiting effect of the mounting plate 202, and the replacement of the mop wheel 1 is completed. Specific embodiment 4

[0047] See also Figure 1-9 On the basis of the first, second and third embodiments, specifically, a synchronous drive assembly 6 is provided on the top of the adapter plate 504, and the synchronous drive assembly 6 includes a sleeve 601 fixed on the top of the adapter plate 504, a connecting plate 602 is fixedly sleeved on the outer peripheral side of the sleeve 601, a presser foot rod 603 is fixed on the bottom of the connecting plate 602, a presser foot 604 is fixed on the bottom of the presser foot rod 603, and an electric push-pull rod 605 is fixed on the inner peripheral side of the sleeve 601.

[0048] The operation process of this embodiment is as follows: using the electric push-pull rod 605 as the driving source, the driving rod of the electric push-pull rod 605 drives the mop wheel 1 to move up and down by driving the rotating component 5, the relative height adjustment component 3 and the installation component 2 fixed at the bottom of the sleeve 601, and is fixedly sleeved on the outer peripheral side of the sleeve 601 through the connecting plate 602, thereby realizing the synchronous movement of the mop wheel 1 and the presser foot 604.

[0049] The lifting device can be installed on the head of the sewing machine or on the workbench according to the specific structure of the sewing machine to which it is applied.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lifting device for a mop wheel and a presser foot, comprising a mop wheel (1); characterized in that: The two sides of the mop wheel (1) are rotatably matched with mounting components (2), and the top of the mounting component (2) is provided with a relative height adjustment component (3); The relative height adjustment assembly (3) comprises a telescopic rod (301), a sleeve (302) is slidably sleeved on the peripheral side of the telescopic rod (301), and a clamping component (4) is fixed on the peripheral side of the sleeve (302); The clamping component (4) comprises a fixed shell (401) fixed to the peripheral side of the sleeve (302); a button (402) is slidably engaged with the side of the fixed shell (401) away from the sleeve (302); a first slide plate (403) is fixed to one end of the button (402); a connecting plate (404) is slidably engaged with the side of the first slide plate (403); a second slide plate (405) is slidably engaged with the side of the connecting plate (404); a spring (406) is fixed to the end of the second slide plate (405) away from the sleeve (302); The telescopic rod (301) has a plurality of slots (303) arranged in a spiral array on its circumferential side surface, and the slots (303) are engaged with the second slide plate (405).

2. A lifting device for a mop wheel and a presser foot according to claim 1, characterized in that: A sliding hole (407) is provided on a side of the fixed shell (401) away from the sleeve (302), and the sliding hole (407) is slidably matched with the button (402). A first sliding groove (408) is provided at the bottom of the sliding hole (407), and the first sliding groove (408) is slidably matched with the first slide plate (403). A square groove (409) is provided on one side of the first sliding groove (408) inside the fixed shell (401), and a second sliding groove (410) is provided on one side of the square groove (409) inside the fixed shell (401), and the second sliding groove (410) is slidably matched with the second slide plate (405), and one end of the second sliding groove (410) is fixedly connected to the spring (406); A support rod (411) is fixed to one side of the square groove (409).

3. A lifting device for a mop wheel and a presser foot according to claim 1, characterized in that: A third slide groove (412) is formed through one side of the first slide plate (403), a support hole (413) is formed through one side of the connecting plate (404) and is rotatably engaged with the side surface of the support rod (411), two symmetrical connecting rods (414) are fixed to one side of the connecting plate (404), a fourth slide groove (415) is formed through one side of the second slide plate (405), and the two connecting rods (414) are slidably engaged with the third slide groove (412) and the fourth slide groove (415) respectively.

4. A lifting device for a mop wheel and a presser foot according to claim 1, characterized in that: The telescopic rod (301) is provided with an external thread (304) on its circumferential side surface; The mounting assembly (2) comprises a first support plate (201) rotatably engaged with two side surfaces of the mop wheel (1); a mounting plate (202) is fixed on the top of the two first support plates (201); a first threaded hole (203) is provided on the top of the mounting plate (202); the mounting plate (202) is threadedly connected to the telescopic rod (301); and a peripheral side surface of the telescopic rod (301) is threadedly connected to a limiting nut (204) located on the top of the mounting plate (202).

5. The lifting device for a mop wheel and a presser foot according to claim 1, characterized in that: A rotating assembly (5) is fixedly arranged on the top of the sleeve (302), and the rotating assembly (5) comprises a rotating block (501) fixedly connected to the top of the sleeve (302), a rotating shaft (502) is rotatably matched inside the rotating block (501), second support plates (503) are fixed at both ends of the rotating shaft (502), and an adapter plate (504) is commonly fixed on the top of the two second support plates (503).

6. A lifting device for a mop wheel and a presser foot according to claim 5, characterized in that: A plurality of fixing holes (506) are formed in a circular array on one side of the rotating block (501); A countersunk hole (507) is formed through one side of the second support plate (503), and a second threaded hole (508) is formed through another side of the second support plate (503). A bolt (505) that passes through a fixing hole (506) and the countersunk hole (507) is threadedly connected inside the second threaded hole (508).

7. A lifting device for a mop wheel and a presser foot according to claim 5, characterized in that: A synchronous drive assembly (6) is arranged on the top of the adapter plate (504), and the synchronous drive assembly (6) comprises a shaft sleeve (601) fixed on the top of the adapter plate (504), a connecting plate (602) is fixedly sleeved on the outer peripheral side of the shaft sleeve (601), a presser foot rod (603) is fixed on the bottom of the connecting plate (602), and a presser foot (604) is fixed on the bottom of the presser foot rod (603); An electric push-pull rod (605) is fixed to the inner peripheral side of the shaft sleeve (601).

Images